* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+/** @file
+ * @brief Channel management and maintenance
+ * @version $Id$
+ */
+#include "config.h"
-#include "sys.h"
-#include <stdlib.h>
-#include "h.h"
-#include "struct.h"
#include "channel.h"
-#include "parse.h"
-#include "whowas.h"
-#include "send.h"
-#include "s_err.h"
-#include "numeric.h"
+#include "client.h"
+#include "destruct_event.h"
+#include "hash.h"
#include "ircd.h"
-#include "common.h"
-#include "match.h"
+#include "ircd_alloc.h"
+#include "ircd_chattr.h"
+#include "ircd_defs.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
+#include "ircd_reply.h"
+#include "ircd_snprintf.h"
+#include "ircd_string.h"
#include "list.h"
-#include "hash.h"
-#include "s_misc.h"
-#include "s_user.h"
-#include "s_conf.h"
-#include "s_bsd.h"
+#include "match.h"
#include "msg.h"
-#include "common.h"
-#include "s_serv.h"
-#include "channel.h"
-#include "support.h"
+#include "msgq.h"
+#include "numeric.h"
#include "numnicks.h"
-#include "sprintf_irc.h"
#include "querycmds.h"
+#include "s_bsd.h"
+#include "s_conf.h"
+#include "s_debug.h"
+#include "s_misc.h"
+#include "s_user.h"
+#include "send.h"
+#include "struct.h"
+#include "sys.h"
+#include "whowas.h"
-RCSTAG_CC("$Id$");
-
-aChannel *channel = NullChn;
-
-static void sendmodeto_one(aClient *cptr, char *from, char *name,
- char *mode, char *param, time_t creationtime);
-static void add_invite(aClient *, aChannel *);
-static int add_banid(aClient *, aChannel *, char *, int, int);
-static Link *next_overlapped_ban(void);
-static Link *next_removed_overlapped_ban(void);
-static int can_join(aClient *, aChannel *, char *);
-static void channel_modes(aClient *, char *, char *, aChannel *);
-static int del_banid(aChannel *, char *, int);
-static int is_banned(aClient *, aChannel *, Link *);
-static int number_of_zombies(aChannel *);
-static int is_deopped(aClient *, aChannel *);
-static int set_mode(aClient *, aClient *, aChannel *, int,
- char **, char *, char *, char *, int *);
-static void sub1_from_channel(aChannel *);
-static void send_hack_notice(aClient *, aClient *, int, char *[], int, int);
-static void clean_channelname(char *);
-
-void del_invite(aClient *, aChannel *);
-
-static char *PartFmt1 = ":%s PART %s";
-static char *PartFmt2 = ":%s PART %s :%s";
-/*
- * some buffers for rebuilding channel/nick lists with ,'s
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/** Linked list containing the full list of all channels */
+struct Channel* GlobalChannelList = 0;
+
+/** Number of struct Membership*'s allocated */
+static unsigned int membershipAllocCount;
+/** Freelist for struct Membership*'s */
+static struct Membership* membershipFreeList;
+/** Freelist for struct Ban*'s */
+static struct Ban* free_bans;
+/** Number of ban structures allocated. */
+static size_t bans_alloc;
+/** Number of ban structures in use. */
+static size_t bans_inuse;
+
+#if !defined(NDEBUG)
+/** return the length (>=0) of a chain of links.
+ * @param lp pointer to the start of the linked list
+ * @return the number of items in the list
*/
-static char nickbuf[BUFSIZE], buf[BUFSIZE];
-static char modebuf[MODEBUFLEN], parabuf[MODEBUFLEN];
-static char nparabuf[MODEBUFLEN];
+static int list_length(struct SLink *lp)
+{
+ int count = 0;
-/*
- * Maximum acceptable lag time in seconds: A channel younger than
- * this is not protected against hacking admins.
- * Mainly here to check if the TS clocks really sync (otherwise this
- * will start causing HACK notices.
- * This value must be the same on all servers.
- *
- * This value has been increased to 1 day in order to distinguish this
- * "normal" type of HACK wallops / desyncs, from possiblity still
- * existing bugs.
+ for (; lp; lp = lp->next)
+ ++count;
+ return count;
+}
+#endif
+
+/** Set the mask for a ban, checking for IP masks.
+ * @param[in,out] ban Ban structure to modify.
+ * @param[in] banstr Mask to ban.
*/
-#define TS_LAG_TIME ((time_t)86400)
+static void
+set_ban_mask(struct Ban *ban, const char *banstr)
+{
+ char *sep;
+ assert(banstr != NULL);
+ ircd_strncpy(ban->banstr, banstr, sizeof(ban->banstr) - 1);
+ sep = strrchr(banstr, '@');
+ if (sep) {
+ ban->nu_len = sep - banstr;
+ if (ipmask_parse(sep + 1, &ban->address, &ban->addrbits))
+ ban->flags |= BAN_IPMASK;
+ }
+}
-/*
- * A Magic TS that is used for channels that are created by JOIN,
- * a channel with this TS accepts all TS without complaining that
- * it might receive later via MODE or CREATE.
+/** Allocate a new Ban structure.
+ * @param[in] banstr Ban mask to use.
+ * @return Newly allocated ban.
*/
-#define MAGIC_REMOTE_JOIN_TS 1270080000
+struct Ban *
+make_ban(const char *banstr)
+{
+ struct Ban *ban;
+ if (free_bans) {
+ ban = free_bans;
+ free_bans = free_bans->next;
+ }
+ else if (!(ban = MyMalloc(sizeof(*ban))))
+ return NULL;
+ else
+ bans_alloc++;
+ bans_inuse++;
+ memset(ban, 0, sizeof(*ban));
+ set_ban_mask(ban, banstr);
+ return ban;
+}
-/*
- * return the length (>=0) of a chain of links.
+/** Deallocate a ban structure.
+ * @param[in] ban Ban to deallocate.
*/
-static int list_length(Link *lp)
+void
+free_ban(struct Ban *ban)
{
- Reg2 int count = 0;
+ ban->next = free_bans;
+ free_bans = ban;
+ bans_inuse--;
+}
- for (; lp; lp = lp->next)
- count++;
- return count;
+/** Report ban usage to \a cptr.
+ * @param[in] cptr Client requesting information.
+ */
+void bans_send_meminfo(struct Client *cptr)
+{
+ struct Ban *ban;
+ size_t num_free;
+ for (num_free = 0, ban = free_bans; ban; ban = ban->next)
+ num_free++;
+ send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Bans: inuse %zu(%zu) free %zu alloc %zu",
+ bans_inuse, bans_inuse * sizeof(*ban), num_free, bans_alloc);
}
-/*
- * find_chasing
+/** return the struct Membership* that represents a client on a channel
+ * This function finds a struct Membership* which holds the state about
+ * a client on a specific channel. The code is smart enough to iterate
+ * over the channels a user is in, or the users in a channel to find the
+ * user depending on which is likely to be more efficient.
*
- * Find the client structure for a nick name (user) using history
- * mechanism if necessary. If the client is not found, an error
+ * @param chptr pointer to the channel struct
+ * @param cptr pointer to the client struct
+ *
+ * @returns pointer to the struct Membership representing this client on
+ * this channel. Returns NULL if the client is not on the channel.
+ * Returns NULL if the client is actually a server.
+ * @see find_channel_member()
+ */
+struct Membership* find_member_link(struct Channel* chptr, const struct Client* cptr)
+{
+ struct Membership *m;
+ assert(0 != cptr);
+ assert(0 != chptr);
+
+ /* Servers don't have member links */
+ if (IsServer(cptr)||IsMe(cptr))
+ return 0;
+
+ /* +k users are typically on a LOT of channels. So we iterate over who
+ * is in the channel. X/W are +k and are in about 5800 channels each.
+ * however there are typically no more than 1000 people in a channel
+ * at a time.
+ */
+ if (IsChannelService(cptr)) {
+ m = chptr->members;
+ while (m) {
+ assert(m->channel == chptr);
+ if (m->user == cptr)
+ return m;
+ m = m->next_member;
+ }
+ }
+ /* Users on the other hand aren't allowed on more than 15 channels. 50%
+ * of users that are on channels are on 2 or less, 95% are on 7 or less,
+ * and 99% are on 10 or less.
+ */
+ else {
+ m = (cli_user(cptr))->channel;
+ while (m) {
+ assert(m->user == cptr);
+ if (m->channel == chptr)
+ return m;
+ m = m->next_channel;
+ }
+ }
+ return 0;
+}
+
+/** Find the client structure for a nick name (user)
+ * Find the client structure for a nick name (user)
+ * using history mechanism if necessary. If the client is not found, an error
* message (NO SUCH NICK) is generated. If the client was found
* through the history, chasing will be 1 and otherwise 0.
+ *
+ * This function was used extensively in the P09 days, and since we now have
+ * numeric nicks is no longer quite as important.
+ *
+ * @param sptr Pointer to the client that has requested the search
+ * @param user a string representing the client to be found
+ * @param chasing a variable set to 0 if the user was found directly,
+ * 1 otherwise
+ * @returns a pointer the client, or NULL if the client wasn't found.
*/
-static aClient *find_chasing(aClient *sptr, char *user, int *chasing)
+struct Client* find_chasing(struct Client* sptr, const char* user, int* chasing)
{
- Reg2 aClient *who = FindClient(user);
+ struct Client* who = FindClient(user);
if (chasing)
*chasing = 0;
if (who)
return who;
- if (!(who = get_history(user, (long)KILLCHASETIMELIMIT)))
- {
- sendto_one(sptr, err_str(ERR_NOSUCHNICK), me.name, sptr->name, user);
- return NULL;
+
+ if (!(who = get_history(user, feature_int(FEAT_KILLCHASETIMELIMIT)))) {
+ send_reply(sptr, ERR_NOSUCHNICK, user);
+ return 0;
}
if (chasing)
*chasing = 1;
return who;
}
-/*
- * Create a string of form "foo!bar@fubar" given foo, bar and fubar
- * as the parameters. If NULL, they become "*".
- */
-static char *make_nick_user_host(char *nick, char *name, char *host)
-{
- static char namebuf[NICKLEN + USERLEN + HOSTLEN + 3];
- sprintf_irc(namebuf, "%s!%s@%s", nick, name, host);
- return namebuf;
-}
-
-/*
- * Create a string of form "foo!bar@123.456.789.123" given foo, bar and the
- * IP-number as the parameters. If NULL, they become "*".
- */
-static char *make_nick_user_ip(char *nick, char *name, struct in_addr ip)
-{
- static char ipbuf[NICKLEN + USERLEN + 16 + 3];
- sprintf_irc(ipbuf, "%s!%s@%s", nick, name, inetntoa(ip));
- return ipbuf;
-}
-
-/*
- * add_banid
- *
- * `cptr' must be the client adding the ban.
- *
- * If `change' is true then add `banid' to channel `chptr'.
- * Returns 0 if the ban was added.
- * Returns -2 if the ban already existed and was marked CHFL_BURST_BAN_WIPEOUT.
- * Return -1 otherwise.
+/** Decrement the count of users, and free if empty.
+ * Subtract one user from channel i (and free channel * block, if channel
+ * became empty).
*
- * Those bans that overlapped with `banid' are flagged with CHFL_BAN_OVERLAPPED
- * when `change' is false, otherwise they will be removed from the banlist.
- * Subsequently calls to next_overlapped_ban() or next_removed_overlapped_ban()
- * respectively will return these bans until NULL is returned.
+ * @param chptr The channel to subtract one from.
*
- * If `firsttime' is true, the ban list as returned by next_overlapped_ban()
- * is reset (unless a non-zero value is returned, in which case the
- * CHFL_BAN_OVERLAPPED flag might not have been reset!).
- *
- * --Run
+ * @returns true (1) if channel still has members.
+ * false (0) if the channel is now empty.
*/
-static Link *next_ban, *prev_ban, *removed_bans_list;
-
-static int add_banid(aClient *cptr, aChannel *chptr, char *banid,
- int change, int firsttime)
+int sub1_from_channel(struct Channel* chptr)
{
- Reg1 Link *ban, **banp;
- Reg2 int cnt = 0, removed_bans = 0, len = strlen(banid);
-
- if (firsttime)
+ if (chptr->users > 1) /* Can be 0, called for an empty channel too */
{
- next_ban = NULL;
- if (prev_ban || removed_bans_list)
- MyCoreDump; /* Memory leak */
+ assert(0 != chptr->members);
+ --chptr->users;
+ return 1;
}
- if (MyUser(cptr))
- collapse(banid);
- for (banp = &chptr->banlist; *banp;)
+
+ chptr->users = 0;
+
+ /*
+ * Also channels without Apass set need to be kept alive,
+ * otherwise Bad Guys(tm) would be able to takeover
+ * existing channels too easily, and then set an Apass!
+ * However, if a channel without Apass becomes empty
+ * then we try to be kind to them and remove possible
+ * limiting modes.
+ */
+ chptr->mode.mode &= ~MODE_INVITEONLY;
+ chptr->mode.limit = 0;
+ /*
+ * We do NOT reset a possible key or bans because when
+ * the 'channel owners' can't get in because of a key
+ * or ban then apparently there was a fight/takeover
+ * on the channel and we want them to contact IRC opers
+ * who then will educate them on the use of Apass/Upass.
+ */
+ if (!chptr->mode.apass[0]) /* If no Apass, reset all modes. */
{
- len += strlen((*banp)->value.ban.banstr);
- ++cnt;
- if (((*banp)->flags & CHFL_BURST_BAN_WIPEOUT))
- {
- if (!strcmp((*banp)->value.ban.banstr, banid))
- {
- (*banp)->flags &= ~CHFL_BURST_BAN_WIPEOUT;
- return -2;
- }
- }
- else if (!mmatch((*banp)->value.ban.banstr, banid))
- return -1;
- if (!mmatch(banid, (*banp)->value.ban.banstr))
- {
- Link *tmp = *banp;
- if (change)
- {
- if (MyUser(cptr))
- {
- cnt--;
- len -= strlen(tmp->value.ban.banstr);
- }
- *banp = tmp->next;
-#if 0
- /* Silently remove overlapping bans */
- RunFree(tmp->value.ban.banstr);
- RunFree(tmp->value.ban.who);
- free_link(tmp);
-#else
- /* These will be sent to the user later as -b */
- tmp->next = removed_bans_list;
- removed_bans_list = tmp;
- removed_bans = 1;
-#endif
- }
- else if (!(tmp->flags & CHFL_BURST_BAN_WIPEOUT))
- {
- tmp->flags |= CHFL_BAN_OVERLAPPED;
- if (!next_ban)
- next_ban = tmp;
- banp = &tmp->next;
- }
- else
- banp = &tmp->next;
+ struct Ban *link, *next;
+ chptr->mode.mode = 0;
+ *chptr->mode.key = '\0';
+ while (chptr->invites)
+ del_invite(chptr->invites->value.cptr, chptr);
+ for (link = chptr->banlist; link; link = next) {
+ next = link->next;
+ free_ban(link);
}
- else
+ chptr->banlist = NULL;
+
+ /* Immediately destruct empty -A channels if not using apass. */
+ if (!feature_bool(FEAT_OPLEVELS))
{
- if (firsttime)
- (*banp)->flags &= ~CHFL_BAN_OVERLAPPED;
- banp = &(*banp)->next;
+ destruct_channel(chptr);
+ return 0;
}
}
- if (MyUser(cptr) && !removed_bans && (len > MAXBANLENGTH || (cnt >= MAXBANS)))
- {
- sendto_one(cptr, err_str(ERR_BANLISTFULL), me.name, cptr->name,
- chptr->chname, banid);
- return -1;
- }
- if (change)
- {
- char *ip_start;
- ban = make_link();
- ban->next = chptr->banlist;
- ban->value.ban.banstr = (char *)RunMalloc(strlen(banid) + 1);
- strcpy(ban->value.ban.banstr, banid);
- ban->value.ban.who = (char *)RunMalloc(strlen(cptr->name) + 1);
- strcpy(ban->value.ban.who, cptr->name);
- ban->value.ban.when = now;
- ban->flags = CHFL_BAN; /* This bit is never used I think... */
- if ((ip_start = strrchr(banid, '@')) && check_if_ipmask(ip_start + 1))
- ban->flags |= CHFL_BAN_IPMASK;
- chptr->banlist = ban;
- /* Erase ban-valid-bit */
- for (ban = chptr->members; ban; ban = ban->next)
- ban->flags &= ~CHFL_BANVALID; /* `ban' == channel member ! */
- }
+ if (TStime() - chptr->creationtime < 172800) /* Channel younger than 48 hours? */
+ schedule_destruct_event_1m(chptr); /* Get rid of it in approximately 4-5 minutes */
+ else
+ schedule_destruct_event_48h(chptr); /* Get rid of it in approximately 48 hours */
+
return 0;
}
-static Link *next_overlapped_ban(void)
+/** Destroy an empty channel
+ * This function destroys an empty channel, removing it from hashtables,
+ * and removing any resources it may have consumed.
+ *
+ * @param chptr The channel to destroy
+ *
+ * @returns 0 (success)
+ *
+ * FIXME: Change to return void, this function never fails.
+ */
+int destruct_channel(struct Channel* chptr)
{
- Reg1 Link *tmp = next_ban;
- if (tmp)
+ struct Ban *ban, *next;
+
+ assert(0 == chptr->members);
+
+ /*
+ * Now, find all invite links from channel structure
+ */
+ while (chptr->invites)
+ del_invite(chptr->invites->value.cptr, chptr);
+
+ for (ban = chptr->banlist; ban; ban = next)
{
- Reg2 Link *ban;
- for (ban = tmp->next; ban; ban = ban->next)
- if ((ban->flags & CHFL_BAN_OVERLAPPED))
- break;
- next_ban = ban;
+ next = ban->next;
+ free_ban(ban);
}
- return tmp;
+ if (chptr->prev)
+ chptr->prev->next = chptr->next;
+ else
+ GlobalChannelList = chptr->next;
+ if (chptr->next)
+ chptr->next->prev = chptr->prev;
+ hRemChannel(chptr);
+ --UserStats.channels;
+ /*
+ * make sure that channel actually got removed from hash table
+ */
+ assert(chptr->hnext == chptr);
+ MyFree(chptr);
+ return 0;
+}
+
+/** returns Membership * if a person is joined and not a zombie
+ * @param cptr Client
+ * @param chptr Channel
+ * @returns pointer to the client's struct Membership * on the channel if that
+ * user is a full member of the channel, or NULL otherwise.
+ *
+ * @see find_member_link()
+ */
+struct Membership* find_channel_member(struct Client* cptr, struct Channel* chptr)
+{
+ struct Membership* member;
+ assert(0 != chptr);
+
+ member = find_member_link(chptr, cptr);
+ return (member && !IsZombie(member)) ? member : 0;
}
-static Link *next_removed_overlapped_ban(void)
+/** Searches for a ban from a ban list that matches a user.
+ * @param[in] cptr The client to test.
+ * @param[in] banlist The list of bans to test.
+ * @return Pointer to a matching ban, or NULL if none exit.
+ */
+struct Ban *find_ban(struct Client *cptr, struct Ban *banlist)
{
- Reg1 Link *tmp = removed_bans_list;
- if (prev_ban)
+ char nu[NICKLEN + USERLEN + 2];
+ char tmphost[HOSTLEN + 1];
+ char iphost[SOCKIPLEN + 1];
+ char *hostmask;
+ char *sr;
+ struct Ban *found;
+
+ /* Build nick!user and alternate host names. */
+ ircd_snprintf(0, nu, sizeof(nu), "%s!%s",
+ cli_name(cptr), cli_user(cptr)->username);
+ ircd_ntoa_r(iphost, &cli_ip(cptr));
+ if (!IsAccount(cptr))
+ sr = NULL;
+ else if (HasHiddenHost(cptr))
+ sr = cli_user(cptr)->realhost;
+ else
{
- if (prev_ban->value.ban.banstr) /* Can be set to NULL in set_mode() */
- RunFree(prev_ban->value.ban.banstr);
- RunFree(prev_ban->value.ban.who);
- free_link(prev_ban);
+ ircd_snprintf(0, tmphost, HOSTLEN, "%s.%s",
+ cli_user(cptr)->account, feature_str(FEAT_HIDDEN_HOST));
+ sr = tmphost;
}
- if (tmp)
- removed_bans_list = removed_bans_list->next;
- prev_ban = tmp;
- return tmp;
+
+ /* Walk through ban list. */
+ for (found = NULL; banlist; banlist = banlist->next) {
+ int res;
+ /* If we have found a positive ban already, only consider exceptions. */
+ if (found && !(banlist->flags & BAN_EXCEPTION))
+ continue;
+ /* Compare nick!user portion of ban. */
+ banlist->banstr[banlist->nu_len] = '\0';
+ res = match(banlist->banstr, nu);
+ banlist->banstr[banlist->nu_len] = '@';
+ if (res)
+ continue;
+ /* Compare host portion of ban. */
+ hostmask = banlist->banstr + banlist->nu_len + 1;
+ if (!((banlist->flags & BAN_IPMASK)
+ && ipmask_check(&cli_ip(cptr), &banlist->address, banlist->addrbits))
+ && match(hostmask, cli_user(cptr)->host)
+ && !(sr && !match(hostmask, sr)))
+ continue;
+ /* If an exception matches, no ban can match. */
+ if (banlist->flags & BAN_EXCEPTION)
+ return NULL;
+ /* Otherwise, remember this ban but keep searching for an exception. */
+ found = banlist;
+ }
+ return found;
}
-/*
- * del_banid
+/**
+ * This function returns true if the user is banned on the said channel.
+ * This function will check the ban cache if applicable, otherwise will
+ * do the comparisons and cache the result.
*
- * If `change' is true, delete `banid' from channel `chptr'.
- * Returns `false' if removal was (or would have been) successful.
+ * @param[in] member The Membership to test for banned-ness.
+ * @return Non-zero if the member is banned, zero if not.
*/
-static int del_banid(aChannel *chptr, char *banid, int change)
+static int is_banned(struct Membership* member)
{
- Reg1 Link **ban;
- Reg2 Link *tmp;
+ if (IsBanValid(member))
+ return IsBanned(member);
- if (!banid)
- return -1;
- for (ban = &(chptr->banlist); *ban; ban = &((*ban)->next))
- if (strCasediff(banid, (*ban)->value.ban.banstr) == 0)
- {
- tmp = *ban;
- if (change)
- {
- *ban = tmp->next;
- RunFree(tmp->value.ban.banstr);
- RunFree(tmp->value.ban.who);
- free_link(tmp);
- /* Erase ban-valid-bit, for channel members that are banned */
- for (tmp = chptr->members; tmp; tmp = tmp->next)
- if ((tmp->flags & (CHFL_BANNED | CHFL_BANVALID)) ==
- (CHFL_BANNED | CHFL_BANVALID))
- tmp->flags &= ~CHFL_BANVALID; /* `tmp' == channel member */
- }
- return 0;
- }
- return -1;
+ SetBanValid(member);
+ if (find_ban(member->user, member->channel->banlist)) {
+ SetBanned(member);
+ return 1;
+ } else {
+ ClearBanned(member);
+ return 0;
+ }
}
-/*
- * IsMember - returns Link * if a person is joined and not a zombie
+/** add a user to a channel.
+ * adds a user to a channel by adding another link to the channels member
+ * chain.
+ *
+ * @param chptr The channel to add to.
+ * @param who The user to add.
+ * @param flags The flags the user gets initially.
+ * @param oplevel The oplevel the user starts with.
*/
-Link *IsMember(aClient *cptr, aChannel *chptr)
+void add_user_to_channel(struct Channel* chptr, struct Client* who,
+ unsigned int flags, int oplevel)
{
- Link *lp;
- return (((lp = find_user_link(chptr->members, cptr)) &&
- !(lp->flags & CHFL_ZOMBIE)) ? lp : NULL);
+ assert(0 != chptr);
+ assert(0 != who);
+
+ if (cli_user(who)) {
+
+ struct Membership* member = membershipFreeList;
+ if (member)
+ membershipFreeList = member->next_member;
+ else {
+ member = (struct Membership*) MyMalloc(sizeof(struct Membership));
+ ++membershipAllocCount;
+ }
+
+ assert(0 != member);
+ member->user = who;
+ member->channel = chptr;
+ member->status = flags;
+ SetOpLevel(member, oplevel);
+
+ member->next_member = chptr->members;
+ if (member->next_member)
+ member->next_member->prev_member = member;
+ member->prev_member = 0;
+ chptr->members = member;
+
+ member->next_channel = (cli_user(who))->channel;
+ if (member->next_channel)
+ member->next_channel->prev_channel = member;
+ member->prev_channel = 0;
+ (cli_user(who))->channel = member;
+
+ if (chptr->destruct_event)
+ remove_destruct_event(chptr);
+ ++chptr->users;
+ ++((cli_user(who))->joined);
+ }
}
-/*
- * is_banned - a non-zero value if banned else 0.
+/** Remove a person from a channel, given their Membership*
+ *
+ * @param member A member of a channel.
+ *
+ * @returns true if there are more people in the channel.
*/
-static int is_banned(aClient *cptr, aChannel *chptr, Link *member)
+static int remove_member_from_channel(struct Membership* member)
{
- Reg1 Link *tmp;
- char *s, *ip_s = NULL;
-
- if (!IsUser(cptr))
- return 0;
+ struct Channel* chptr;
+ assert(0 != member);
+ chptr = member->channel;
+ /*
+ * unlink channel member list
+ */
+ if (member->next_member)
+ member->next_member->prev_member = member->prev_member;
+ if (member->prev_member)
+ member->prev_member->next_member = member->next_member;
+ else
+ member->channel->members = member->next_member;
- if (member)
- {
- if ((member->flags & CHFL_BANVALID))
- return (member->flags & CHFL_BANNED);
- }
+ /*
+ * If this is the last delayed-join user, may have to clear WASDELJOINS.
+ */
+ if (IsDelayedJoin(member))
+ CheckDelayedJoins(chptr);
- s = make_nick_user_host(cptr->name, cptr->user->username, cptr->user->host);
+ /*
+ * unlink client channel list
+ */
+ if (member->next_channel)
+ member->next_channel->prev_channel = member->prev_channel;
+ if (member->prev_channel)
+ member->prev_channel->next_channel = member->next_channel;
+ else
+ (cli_user(member->user))->channel = member->next_channel;
- for (tmp = chptr->banlist; tmp; tmp = tmp->next)
- {
- if ((tmp->flags & CHFL_BAN_IPMASK))
- {
- if (!ip_s)
- ip_s = make_nick_user_ip(cptr->name, cptr->user->username, cptr->ip);
- if (match(tmp->value.ban.banstr, ip_s) == 0)
- break;
- }
- else if (match(tmp->value.ban.banstr, s) == 0)
- break;
- }
+ --(cli_user(member->user))->joined;
- if (member)
- {
- member->flags |= CHFL_BANVALID;
- if (tmp)
- {
- member->flags |= CHFL_BANNED;
- return 1;
- }
- else
- {
- member->flags &= ~CHFL_BANNED;
- return 0;
- }
- }
+ member->next_member = membershipFreeList;
+ membershipFreeList = member;
- return (tmp != NULL);
+ return sub1_from_channel(chptr);
}
-/*
- * adds a user to a channel by adding another link to the channels member
- * chain.
+/** Check if all the remaining members on the channel are zombies
+ *
+ * @returns False if the channel has any non zombie members, True otherwise.
+ * @see \ref zombie
*/
-static void add_user_to_channel(aChannel *chptr, aClient *who, int flags)
+static int channel_all_zombies(struct Channel* chptr)
{
- Reg1 Link *ptr;
+ struct Membership* member;
- if (who->user)
- {
- ptr = make_link();
- ptr->value.cptr = who;
- ptr->flags = flags;
- ptr->next = chptr->members;
- chptr->members = ptr;
- chptr->users++;
-
- ptr = make_link();
- ptr->value.chptr = chptr;
- ptr->next = who->user->channel;
- who->user->channel = ptr;
- who->user->joined++;
+ for (member = chptr->members; member; member = member->next_member) {
+ if (!IsZombie(member))
+ return 0;
}
+ return 1;
}
+
-void remove_user_from_channel(aClient *sptr, aChannel *chptr)
+/** Remove a user from a channel
+ * This is the generic entry point for removing a user from a channel, this
+ * function will remove the client from the channel, and destroy the channel
+ * if there are no more normal users left.
+ *
+ * @param cptr The client
+ * @param chptr The channel
+ */
+void remove_user_from_channel(struct Client* cptr, struct Channel* chptr)
{
- Reg1 Link **curr;
- Reg2 Link *tmp;
- Reg3 Link *lp = chptr->members;
+
+ struct Membership* member;
+ assert(0 != chptr);
- for (; lp && (lp->flags & CHFL_ZOMBIE || lp->value.cptr == sptr);
- lp = lp->next);
- for (;;)
- {
- for (curr = &chptr->members; (tmp = *curr); curr = &tmp->next)
- if (tmp->value.cptr == sptr)
- {
- *curr = tmp->next;
- free_link(tmp);
- break;
+ if ((member = find_member_link(chptr, cptr))) {
+ if (remove_member_from_channel(member)) {
+ if (channel_all_zombies(chptr)) {
+ /*
+ * XXX - this looks dangerous but isn't if we got the referential
+ * integrity right for channels
+ */
+ while (remove_member_from_channel(chptr->members))
+ ;
}
- for (curr = &sptr->user->channel; (tmp = *curr); curr = &tmp->next)
- if (tmp->value.chptr == chptr)
- {
- *curr = tmp->next;
- free_link(tmp);
- break;
- }
- sptr->user->joined--;
- if (lp)
- break;
- if (chptr->members)
- sptr = chptr->members->value.cptr;
- else
- break;
- sub1_from_channel(chptr);
+ }
}
- sub1_from_channel(chptr);
}
-int is_chan_op(aClient *cptr, aChannel *chptr)
+/** Remove a user from all channels they are on.
+ *
+ * This function removes a user from all channels they are on.
+ *
+ * @param cptr The client to remove.
+ */
+void remove_user_from_all_channels(struct Client* cptr)
{
- Reg1 Link *lp;
+ struct Membership* chan;
+ assert(0 != cptr);
+ assert(0 != cli_user(cptr));
- if (chptr)
- if ((lp = find_user_link(chptr->members, cptr)) &&
- !(lp->flags & CHFL_ZOMBIE))
- return (lp->flags & CHFL_CHANOP);
-
- return 0;
+ while ((chan = (cli_user(cptr))->channel))
+ remove_user_from_channel(cptr, chan->channel);
}
-static int is_deopped(aClient *cptr, aChannel *chptr)
+/** Check if this user is a legitimate chanop
+ *
+ * @param cptr Client to check
+ * @param chptr Channel to check
+ *
+ * @returns True if the user is a chanop (And not a zombie), False otherwise.
+ * @see \ref zombie
+ */
+int is_chan_op(struct Client *cptr, struct Channel *chptr)
{
- Reg1 Link *lp;
-
- if (chptr)
- if ((lp = find_user_link(chptr->members, cptr)))
- return (lp->flags & CHFL_DEOPPED);
+ struct Membership* member;
+ assert(chptr);
+ if ((member = find_member_link(chptr, cptr)))
+ return (!IsZombie(member) && IsChanOp(member));
- return (IsUser(cptr) ? 1 : 0);
+ return 0;
}
-int is_zombie(aClient *cptr, aChannel *chptr)
+/** Check if a user is a Zombie on a specific channel.
+ *
+ * @param cptr The client to check.
+ * @param chptr The channel to check.
+ *
+ * @returns True if the client (cptr) is a zombie on the channel (chptr),
+ * False otherwise.
+ *
+ * @see \ref zombie
+ */
+int is_zombie(struct Client *cptr, struct Channel *chptr)
{
- Reg1 Link *lp;
+ struct Membership* member;
- if (chptr)
- if ((lp = find_user_link(chptr->members, cptr)))
- return (lp->flags & CHFL_ZOMBIE);
+ assert(0 != chptr);
+ if ((member = find_member_link(chptr, cptr)))
+ return IsZombie(member);
return 0;
}
-int has_voice(aClient *cptr, aChannel *chptr)
+/** Returns if a user has voice on a channel.
+ *
+ * @param cptr The client
+ * @param chptr The channel
+ *
+ * @returns True if the client (cptr) is voiced on (chptr) and is not a zombie.
+ * @see \ref zombie
+ */
+int has_voice(struct Client* cptr, struct Channel* chptr)
{
- Reg1 Link *lp;
+ struct Membership* member;
- if (chptr)
- if ((lp = find_user_link(chptr->members, cptr)) &&
- !(lp->flags & CHFL_ZOMBIE))
- return (lp->flags & CHFL_VOICE);
+ assert(0 != chptr);
+ if ((member = find_member_link(chptr, cptr)))
+ return (!IsZombie(member) && HasVoice(member));
return 0;
}
-int can_send(aClient *cptr, aChannel *chptr)
+/** Can this member send to a channel
+ *
+ * A user can speak on a channel iff:
+ * <ol>
+ * <li> They didn't use the Apass to gain ops.
+ * <li> They are op'd or voice'd.
+ * <li> You aren't banned.
+ * <li> The channel isn't +m
+ * <li> The channel isn't +n or you are on the channel.
+ * </ol>
+ *
+ * This function will optionally reveal a user on a delayed join channel if
+ * they are allowed to send to the channel.
+ *
+ * @param member The membership of the user
+ * @param reveal If true, the user will be "revealed" on a delayed
+ * joined channel.
+ *
+ * @returns True if the client can speak on the channel.
+ */
+int member_can_send_to_channel(struct Membership* member, int reveal)
{
- Reg1 Link *lp;
+ assert(0 != member);
+
+ /* Do not check for users on other servers: This should be a
+ * temporary desynch, or maybe they are on an older server, but
+ * we do not want to send ERR_CANNOTSENDTOCHAN more than once.
+ */
+ if (!MyUser(member->user))
+ {
+ if (IsDelayedJoin(member) && reveal)
+ RevealDelayedJoin(member);
+ return 1;
+ }
+
+ /* Discourage using the Apass to get op. They should use the Upass. */
+ if (IsChannelManager(member) && member->channel->mode.apass[0])
+ return 0;
- lp = IsMember(cptr, chptr);
+ /* If you have voice or ops, you can speak. */
+ if (IsVoicedOrOpped(member))
+ return 1;
+
+ /*
+ * If it's moderated, and you aren't a privileged user, you can't
+ * speak.
+ */
+ if (member->channel->mode.mode & MODE_MODERATED)
+ return 0;
- if ((!lp || !(lp->flags & (CHFL_CHANOP | CHFL_VOICE)) ||
- (lp->flags & CHFL_ZOMBIE)) && MyUser(cptr) && is_banned(cptr, chptr, lp))
- return (MODE_BAN);
+ /* If only logged in users may join and you're not one, you can't speak. */
+ if (member->channel->mode.mode & MODE_REGONLY && !IsAccount(member->user))
+ return 0;
- if (chptr->mode.mode & MODE_MODERATED &&
- (!lp || !(lp->flags & (CHFL_CHANOP | CHFL_VOICE)) ||
- (lp->flags & CHFL_ZOMBIE)))
- return (MODE_MODERATED);
+ /* If you're banned then you can't speak either. */
+ if (is_banned(member))
+ return 0;
- if (!lp && ((chptr->mode.mode & MODE_NOPRIVMSGS) ||
- IsModelessChannel(chptr->chname)))
- return (MODE_NOPRIVMSGS);
+ if (IsDelayedJoin(member) && reveal)
+ RevealDelayedJoin(member);
- return 0;
+ return 1;
}
-/*
- * write the "simple" list of channel modes for channel chptr onto buffer mbuf
- * with the parameters in pbuf.
+/** Check if a client can send to a channel.
+ *
+ * Has the added check over member_can_send_to_channel() of servers can
+ * always speak.
+ *
+ * @param cptr The client to check
+ * @param chptr The channel to check
+ * @param reveal If the user should be revealed (see
+ * member_can_send_to_channel())
+ *
+ * @returns true if the client is allowed to speak on the channel, false
+ * otherwise
+ *
+ * @see member_can_send_to_channel()
*/
-static void channel_modes(aClient *cptr, char *mbuf, char *pbuf,
- aChannel *chptr)
+int client_can_send_to_channel(struct Client *cptr, struct Channel *chptr, int reveal)
{
- *mbuf++ = '+';
- if (chptr->mode.mode & MODE_SECRET)
- *mbuf++ = 's';
- else if (chptr->mode.mode & MODE_PRIVATE)
- *mbuf++ = 'p';
- if (chptr->mode.mode & MODE_MODERATED)
- *mbuf++ = 'm';
- if (chptr->mode.mode & MODE_TOPICLIMIT)
- *mbuf++ = 't';
- if (chptr->mode.mode & MODE_INVITEONLY)
+ struct Membership *member;
+ assert(0 != cptr);
+ /*
+ * Servers can always speak on channels.
+ */
+ if (IsServer(cptr))
+ return 1;
+
+ member = find_channel_member(cptr, chptr);
+
+ /*
+ * You can't speak if you're off channel, and it is +n (no external messages)
+ * or +m (moderated).
+ */
+ if (!member) {
+ if ((chptr->mode.mode & (MODE_NOPRIVMSGS|MODE_MODERATED)) ||
+ ((chptr->mode.mode & MODE_REGONLY) && !IsAccount(cptr)))
+ return 0;
+ else
+ return !find_ban(cptr, chptr->banlist);
+ }
+ return member_can_send_to_channel(member, reveal);
+}
+
+/** Returns the name of a channel that prevents the user from changing nick.
+ * if a member and not (opped or voiced) and (banned or moderated), return
+ * the name of the first channel banned on.
+ *
+ * @param cptr The client
+ *
+ * @returns the name of the first channel banned on, or NULL if the user
+ * can change nicks.
+ */
+const char* find_no_nickchange_channel(struct Client* cptr)
+{
+ if (MyUser(cptr)) {
+ struct Membership* member;
+ for (member = (cli_user(cptr))->channel; member;
+ member = member->next_channel) {
+ if (IsVoicedOrOpped(member))
+ continue;
+ if ((member->channel->mode.mode & MODE_MODERATED)
+ || (member->channel->mode.mode & MODE_REGONLY && !IsAccount(cptr))
+ || is_banned(member))
+ return member->channel->chname;
+ }
+ }
+ return 0;
+}
+
+
+/** Fill mbuf/pbuf with modes from chptr
+ * write the "simple" list of channel modes for channel chptr onto buffer mbuf
+ * with the parameters in pbuf as visible by cptr.
+ *
+ * This function will hide keys from non-op'd, non-server clients.
+ *
+ * @param cptr The client to generate the mode for.
+ * @param mbuf The buffer to write the modes into.
+ * @param pbuf The buffer to write the mode parameters into.
+ * @param buflen The length of the buffers.
+ * @param chptr The channel to get the modes from.
+ * @param member The membership of this client on this channel (or NULL
+ * if this client isn't on this channel)
+ *
+ */
+void channel_modes(struct Client *cptr, char *mbuf, char *pbuf, int buflen,
+ struct Channel *chptr, struct Membership *member)
+{
+ int previous_parameter = 0;
+
+ assert(0 != mbuf);
+ assert(0 != pbuf);
+ assert(0 != chptr);
+
+ *mbuf++ = '+';
+ if (chptr->mode.mode & MODE_SECRET)
+ *mbuf++ = 's';
+ else if (chptr->mode.mode & MODE_PRIVATE)
+ *mbuf++ = 'p';
+ if (chptr->mode.mode & MODE_MODERATED)
+ *mbuf++ = 'm';
+ if (chptr->mode.mode & MODE_TOPICLIMIT)
+ *mbuf++ = 't';
+ if (chptr->mode.mode & MODE_INVITEONLY)
*mbuf++ = 'i';
if (chptr->mode.mode & MODE_NOPRIVMSGS)
*mbuf++ = 'n';
- if (chptr->mode.limit)
- {
+ if (chptr->mode.mode & MODE_REGONLY)
+ *mbuf++ = 'r';
+ if (chptr->mode.mode & MODE_DELJOINS)
+ *mbuf++ = 'D';
+ else if (MyUser(cptr) && (chptr->mode.mode & MODE_WASDELJOINS))
+ *mbuf++ = 'd';
+ if (chptr->mode.mode & MODE_REGISTERED)
+ *mbuf++ = 'R';
+ if (chptr->mode.limit) {
*mbuf++ = 'l';
- sprintf_irc(pbuf, "%d", chptr->mode.limit);
+ ircd_snprintf(0, pbuf, buflen, "%u", chptr->mode.limit);
+ previous_parameter = 1;
}
- if (*chptr->mode.key)
- {
+
+ if (*chptr->mode.key) {
*mbuf++ = 'k';
- if (is_chan_op(cptr, chptr) || IsServer(cptr))
- {
- if (chptr->mode.limit)
- strcat(pbuf, " ");
+ if (previous_parameter)
+ strcat(pbuf, " ");
+ if (is_chan_op(cptr, chptr) || IsServer(cptr)) {
strcat(pbuf, chptr->mode.key);
- }
+ } else
+ strcat(pbuf, "*");
+ previous_parameter = 1;
+ }
+ if (*chptr->mode.apass) {
+ *mbuf++ = 'A';
+ if (previous_parameter)
+ strcat(pbuf, " ");
+ if (IsServer(cptr)) {
+ strcat(pbuf, chptr->mode.apass);
+ } else
+ strcat(pbuf, "*");
+ previous_parameter = 1;
+ }
+ if (*chptr->mode.upass) {
+ *mbuf++ = 'U';
+ if (previous_parameter)
+ strcat(pbuf, " ");
+ if (IsServer(cptr) || (member && IsChanOp(member) && OpLevel(member) == 0)) {
+ strcat(pbuf, chptr->mode.upass);
+ } else
+ strcat(pbuf, "*");
}
*mbuf = '\0';
- return;
}
-static int send_mode_list(aClient *cptr, char *chname, time_t creationtime,
- Link *top, int mask, char flag)
+/** Compare two members oplevel
+ *
+ * @param mp1 Pointer to a pointer to a membership
+ * @param mp2 Pointer to a pointer to a membership
+ *
+ * @returns 0 if equal, -1 if mp1 is lower, +1 otherwise.
+ *
+ * Used for qsort(3).
+ */
+int compare_member_oplevel(const void *mp1, const void *mp2)
{
- Reg1 Link *lp;
- Reg2 char *cp, *name;
- int count = 0, send = 0, sent = 0;
-
- cp = modebuf + strlen(modebuf);
- if (*parabuf) /* mode +l or +k xx */
- count = 1;
- for (lp = top; lp; lp = lp->next)
- {
- if (!(lp->flags & mask))
- continue;
- if (mask == CHFL_BAN)
- name = lp->value.ban.banstr;
- else
- name = lp->value.cptr->name;
- if (strlen(parabuf) + strlen(name) + 11 < (size_t)MODEBUFLEN)
- {
- strcat(parabuf, " ");
- strcat(parabuf, name);
- count++;
- *cp++ = flag;
- *cp = '\0';
- }
- else if (*parabuf)
- send = 1;
- if (count == 6)
- send = 1;
- if (send)
- {
- /* cptr is always a server! So we send creationtimes */
- sendmodeto_one(cptr, me.name, chname, modebuf, parabuf, creationtime);
- sent = 1;
- send = 0;
- *parabuf = '\0';
- cp = modebuf;
- *cp++ = '+';
- if (count != 6)
- {
- strcpy(parabuf, name);
- *cp++ = flag;
- }
- count = 0;
- *cp = '\0';
- }
- }
- return sent;
+ struct Membership const* member1 = *(struct Membership const**)mp1;
+ struct Membership const* member2 = *(struct Membership const**)mp2;
+ if (member1->oplevel == member2->oplevel)
+ return 0;
+ return (member1->oplevel < member2->oplevel) ? -1 : 1;
}
-/*
- * send "cptr" a full list of the modes for channel chptr.
+/* send "cptr" a full list of the modes for channel chptr.
+ *
+ * Sends a BURST line to cptr, bursting all the modes for the channel.
+ *
+ * @param cptr Client pointer
+ * @param chptr Channel pointer
*/
-void send_channel_modes(aClient *cptr, aChannel *chptr)
+void send_channel_modes(struct Client *cptr, struct Channel *chptr)
{
- int sent;
+ /* The order in which modes are generated is now mandatory */
+ static unsigned int current_flags[4] =
+ { 0, CHFL_VOICE, CHFL_CHANOP, CHFL_CHANOP | CHFL_VOICE };
+ int first = 1;
+ int full = 1;
+ int flag_cnt = 0;
+ int new_mode = 0;
+ size_t len;
+ struct Membership* member;
+ struct Ban* lp2;
+ char modebuf[MODEBUFLEN];
+ char parabuf[MODEBUFLEN];
+ struct MsgBuf *mb;
+ int number_of_ops = 0;
+ int opped_members_index = 0;
+ struct Membership** opped_members = NULL;
+ int last_oplevel = 0;
+ int send_oplevels = 0;
+
+ assert(0 != cptr);
+ assert(0 != chptr);
+
if (IsLocalChannel(chptr->chname))
return;
+ member = chptr->members;
+ lp2 = chptr->banlist;
+
*modebuf = *parabuf = '\0';
- channel_modes(cptr, modebuf, parabuf, chptr);
+ channel_modes(cptr, modebuf, parabuf, sizeof(parabuf), chptr, 0);
- if (Protocol(cptr) < 10)
- {
- sent = send_mode_list(cptr, chptr->chname, chptr->creationtime,
- chptr->members, CHFL_CHANOP, 'o');
- if (!sent && chptr->creationtime)
- sendto_one(cptr, ":%s MODE %s %s %s " TIME_T_FMT, me.name,
- chptr->chname, modebuf, parabuf, chptr->creationtime);
- else if (modebuf[1] || *parabuf)
- sendmodeto_one(cptr, me.name,
- chptr->chname, modebuf, parabuf, chptr->creationtime);
-
- *parabuf = '\0';
- *modebuf = '+';
- modebuf[1] = '\0';
- send_mode_list(cptr, chptr->chname, chptr->creationtime,
- chptr->banlist, CHFL_BAN, 'b');
- if (modebuf[1] || *parabuf)
- sendmodeto_one(cptr, me.name, chptr->chname, modebuf,
- parabuf, chptr->creationtime);
-
- *parabuf = '\0';
- *modebuf = '+';
- modebuf[1] = '\0';
- send_mode_list(cptr, chptr->chname, chptr->creationtime,
- chptr->members, CHFL_VOICE, 'v');
- if (modebuf[1] || *parabuf)
- sendmodeto_one(cptr, me.name, chptr->chname, modebuf,
- parabuf, chptr->creationtime);
- }
- else
+ for (first = 1; full; first = 0) /* Loop for multiple messages */
{
- static unsigned int current_flags[4] =
- { 0, CHFL_CHANOP | CHFL_VOICE, CHFL_VOICE, CHFL_CHANOP };
- int first = 1, full = 1, flag_cnt = 0, new_mode = 0;
- size_t len, sblen;
- Link *lp1 = chptr->members;
- Link *lp2 = chptr->banlist;
- for (first = 1; full; first = 0) /* Loop for multiple messages */
+ full = 0; /* Assume by default we get it
+ all in one message */
+
+ /* (Continued) prefix: "<Y> B <channel> <TS>" */
+ /* is there any better way we can do this? */
+ mb = msgq_make(&me, "%C " TOK_BURST " %H %Tu", &me, chptr,
+ chptr->creationtime);
+
+ if (first && modebuf[1]) /* Add simple modes (Aiklmnpstu)
+ if first message */
{
- full = 0; /* Assume by default we get it
- all in one message */
+ /* prefix: "<Y> B <channel> <TS>[ <modes>[ <params>]]" */
+ msgq_append(&me, mb, " %s", modebuf);
- /* (Continued) prefix: "<Y> BURST <channel> <TS>" */
- sprintf_irc(sendbuf, "%s BURST %s " TIME_T_FMT, NumServ(&me),
- chptr->chname, chptr->creationtime);
- sblen = strlen(sendbuf);
+ if (*parabuf)
+ msgq_append(&me, mb, " %s", parabuf);
+ }
- if (first && modebuf[1]) /* Add simple modes (iklmnpst)
- if first message */
+ /*
+ * Attach nicks, comma separated " nick[:modes],nick[:modes],..."
+ *
+ * First find all opless members.
+ * Run 2 times over all members, to group the members with
+ * and without voice together.
+ * Then run 2 times over all opped members (which are ordered
+ * by op-level) to also group voice and non-voice together.
+ */
+ for (first = 1; flag_cnt < 4; new_mode = 1, ++flag_cnt)
+ {
+ while (member)
{
- /* prefix: "<Y> BURST <channel> <TS>[ <modes>[ <params>]]" */
- sendbuf[sblen++] = ' ';
- strcpy(sendbuf + sblen, modebuf);
- sblen += strlen(modebuf);
- if (*parabuf)
+ if (flag_cnt < 2 && IsChanOp(member))
{
- sendbuf[sblen++] = ' ';
- strcpy(sendbuf + sblen, parabuf);
- sblen += strlen(parabuf);
+ /*
+ * The first loop (to find all non-voice/op), we count the ops.
+ * The second loop (to find all voiced non-ops), store the ops
+ * in a dynamic array.
+ */
+ if (flag_cnt == 0)
+ ++number_of_ops;
+ else
+ opped_members[opped_members_index++] = member;
+ /* We also send oplevels if anyone is below the weakest level. */
+ if (OpLevel(member) < MAXOPLEVEL)
+ send_oplevels = 1;
}
- }
-
- /* Attach nicks, comma seperated " nick[:modes],nick[:modes],..." */
- /* Run 4 times over all members, to group the members with the
- * same mode together */
- for (first = 1; flag_cnt < 4;
- lp1 = chptr->members, new_mode = 1, flag_cnt++)
- {
- for (; lp1; lp1 = lp1->next)
+ /* Only handle the members with the flags that we are interested in. */
+ if ((member->status & CHFL_VOICED_OR_OPPED) == current_flags[flag_cnt])
{
- if ((lp1->flags & (CHFL_CHANOP | CHFL_VOICE)) !=
- current_flags[flag_cnt])
- continue; /* Skip members with different flags */
- if (sblen + NUMNICKLEN + 4 > BUFSIZE - 3)
- /* The 4 is a possible ",:ov"
- The -3 is for the "\r\n\0" that is added in send.c */
+ if (msgq_bufleft(mb) < NUMNICKLEN + 3 + MAXOPLEVELDIGITS)
+ /* The 3 + MAXOPLEVELDIGITS is a possible ",:v999". */
{
- full = 1; /* Make sure we continue after
+ full = 1; /* Make sure we continue after
sending it so far */
- break; /* Do not add this member to this message */
+ /* Ensure the new BURST line contains the current
+ * ":mode", except when there is no mode yet. */
+ new_mode = (flag_cnt > 0) ? 1 : 0;
+ break; /* Do not add this member to this message */
}
- sendbuf[sblen++] = first ? ' ' : ',';
- first = 0; /* From now on, us comma's to add new nicks */
+ msgq_append(&me, mb, "%c%C", first ? ' ' : ',', member->user);
+ first = 0; /* From now on, use commas to add new nicks */
- sprintf_irc(sendbuf + sblen, "%s%s", NumNick(lp1->value.cptr));
- sblen += strlen(sendbuf + sblen);
-
- if (new_mode) /* Do we have a nick with a new mode ? */
+ /*
+ * Do we have a nick with a new mode ?
+ * Or are we starting a new BURST line?
+ */
+ if (new_mode)
{
- new_mode = 0;
- sendbuf[sblen++] = ':';
- if (lp1->flags & CHFL_CHANOP)
- sendbuf[sblen++] = 'o';
- if (lp1->flags & CHFL_VOICE)
- sendbuf[sblen++] = 'v';
- }
- }
- if (full)
- break;
- }
-
- if (!full)
- {
- /* Attach all bans, space seperated " :%ban ban ..." */
- for (first = 2; lp2; lp2 = lp2->next)
- {
- len = strlen(lp2->value.ban.banstr);
- if (sblen + len + 1 + first > BUFSIZE - 3)
- /* The +1 stands for the added ' '.
- * The +first stands for the added ":%".
- * The -3 is for the "\r\n\0" that is added in send.c
+ /*
+ * This means we are at the _first_ member that has only
+ * voice, or the first member that has only ops, or the
+ * first member that has voice and ops (so we get here
+ * at most three times, plus once for every start of
+ * a continued BURST line where only these modes is current.
+ * In the two cases where the current mode includes ops,
+ * we need to add the _absolute_ value of the oplevel to the mode.
*/
- {
- full = 1;
- break;
+ char tbuf[3 + MAXOPLEVELDIGITS] = ":";
+ int loc = 1;
+
+ if (HasVoice(member)) /* flag_cnt == 1 or 3 */
+ tbuf[loc++] = 'v';
+ if (IsChanOp(member)) /* flag_cnt == 2 or 3 */
+ {
+ /* append the absolute value of the oplevel */
+ if (send_oplevels)
+ loc += ircd_snprintf(0, tbuf + loc, sizeof(tbuf) - loc, "%u", last_oplevel = member->oplevel);
+ else
+ tbuf[loc++] = 'o';
+ }
+ tbuf[loc] = '\0';
+ msgq_append(&me, mb, tbuf);
+ new_mode = 0;
}
- if (first)
+ else if (send_oplevels && flag_cnt > 1 && last_oplevel != member->oplevel)
{
- first = 0;
- sendbuf[sblen++] = ' ';
- sendbuf[sblen++] = ':'; /* Will be last parameter */
- sendbuf[sblen++] = '%'; /* To tell bans apart */
+ /*
+ * This can't be the first member of a (continued) BURST
+ * message because then either flag_cnt == 0 or new_mode == 1
+ * Now we need to append the incremental value of the oplevel.
+ */
+ char tbuf[2 + MAXOPLEVELDIGITS];
+ ircd_snprintf(0, tbuf, sizeof(tbuf), ":%u", member->oplevel - last_oplevel);
+ last_oplevel = member->oplevel;
+ msgq_append(&me, mb, tbuf);
}
- else
- sendbuf[sblen++] = ' ';
- strcpy(sendbuf + sblen, lp2->value.ban.banstr);
- sblen += len;
}
+ /* Go to the next `member'. */
+ if (flag_cnt < 2)
+ member = member->next_member;
+ else
+ member = opped_members[++opped_members_index];
}
+ if (full)
+ break;
- sendbuf[sblen] = '\0';
- sendbufto_one(cptr); /* Send this message */
- } /* Continue when there was something
- that didn't fit (full==1) */
- }
-}
-
-/*
- * m_mode
- * parv[0] - sender
- * parv[1] - channel
- */
-
-int m_mode(aClient *cptr, aClient *sptr, int parc, char *parv[])
-{
- int badop, sendts;
- aChannel *chptr;
-
- /* Now, try to find the channel in question */
- if (parc > 1)
- {
- chptr = FindChannel(parv[1]);
- if (chptr == NullChn)
- return m_umode(cptr, sptr, parc, parv);
- }
- else
- {
- sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS), me.name, parv[0], "MODE");
- return 0;
- }
-
- sptr->flags &= ~FLAGS_TS8;
-
- if (MyUser(sptr))
- clean_channelname(parv[1]);
- else if (IsLocalChannel(parv[1]))
- return 0;
-
- /* sending an error wasnt good, lets just send an empty mode reply.. poptix */
- if (IsModelessChannel(chptr->chname))
- {
- if (IsUser(sptr))
- sendto_one(sptr, rpl_str(RPL_CHANNELMODEIS), me.name, parv[0],
- chptr->chname, "+nt", "");
- return 0;
- }
-
- if (parc < 3)
- {
- *modebuf = *parabuf = '\0';
- modebuf[1] = '\0';
- channel_modes(sptr, modebuf, parabuf, chptr);
- sendto_one(sptr, rpl_str(RPL_CHANNELMODEIS), me.name, parv[0],
- chptr->chname, modebuf, parabuf);
- sendto_one(sptr, rpl_str(RPL_CREATIONTIME), me.name, parv[0],
- chptr->chname, chptr->creationtime);
- return 0;
- }
-
- if (!(sendts = set_mode(cptr, sptr, chptr, parc - 2, parv + 2,
- modebuf, parabuf, nparabuf, &badop)))
- {
- sendto_one(sptr, err_str(IsMember(sptr, chptr) ? ERR_CHANOPRIVSNEEDED :
- ERR_NOTONCHANNEL), me.name, parv[0], chptr->chname);
- return 0;
- }
+ /* Point `member' at the start of the list again. */
+ if (flag_cnt == 0)
+ {
+ member = chptr->members;
+ /* Now, after one loop, we know the number of ops and can
+ * allocate the dynamic array with pointer to the ops. */
+ opped_members = (struct Membership**)
+ MyMalloc((number_of_ops + 1) * sizeof(struct Membership*));
+ opped_members[number_of_ops] = NULL; /* Needed for loop termination */
+ }
+ else
+ {
+ /* At the end of the second loop, sort the opped members with
+ * increasing op-level, so that we will output them in the
+ * correct order (and all op-level increments stay positive) */
+ if (flag_cnt == 1)
+ qsort(opped_members, number_of_ops,
+ sizeof(struct Membership*), compare_member_oplevel);
+ /* The third and fourth loop run only over the opped members. */
+ member = opped_members[(opped_members_index = 0)];
+ }
- if (badop >= 2)
- send_hack_notice(cptr, sptr, parc, parv, badop, 1);
+ } /* loop over 0,+v,+o,+ov */
- if (strlen(modebuf) > (size_t)1 || sendts > 0)
- {
- if (badop != 2 && strlen(modebuf) > (size_t)1)
- sendto_channel_butserv(chptr, sptr, ":%s MODE %s %s %s",
- parv[0], chptr->chname, modebuf, parabuf);
- if (IsLocalChannel(chptr->chname))
- return 0;
- /* We send a creationtime of 0, to mark it as a hack --Run */
- if (IsServer(sptr) && (badop == 2 || sendts > 0))
+ if (!full)
{
- if (*modebuf == '\0')
- strcpy(modebuf, "+");
- if (badop != 2)
+ /* Attach all bans, space separated " :%ban ban ..." */
+ for (first = 2; lp2; lp2 = lp2->next)
{
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s %s %s " TIME_T_FMT,
- parv[0], chptr->chname, modebuf, parabuf,
- (badop == 4) ? (time_t) 0 : chptr->creationtime);
- sendto_highprot_butone(cptr, 10, ":%s MODE %s %s %s " TIME_T_FMT,
- parv[0], chptr->chname, modebuf, nparabuf,
- (badop == 4) ? (time_t) 0 : chptr->creationtime);
+ len = strlen(lp2->banstr);
+ if (msgq_bufleft(mb) < len + 1 + first)
+ /* The +1 stands for the added ' '.
+ * The +first stands for the added ":%".
+ */
+ {
+ full = 1;
+ break;
+ }
+ msgq_append(&me, mb, " %s%s", first ? ":%" : "",
+ lp2->banstr);
+ first = 0;
}
}
- else
- {
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s %s %s",
- parv[0], chptr->chname, modebuf, parabuf);
- sendto_highprot_butone(cptr, 10, ":%s MODE %s %s %s",
- parv[0], chptr->chname, modebuf, nparabuf);
- }
- }
- return 0;
-}
-
-static int DoesOp(char *modebuf)
-{
- modebuf--; /* Is it possible that a mode
- starts with o and not +o ? */
- while (*++modebuf)
- if (*modebuf == 'o' || *modebuf == 'v')
- return (1);
- return 0;
-}
-/* This function should be removed when all servers are 2.10 */
-static void sendmodeto_one(aClient *cptr, char *from, char *name,
- char *mode, char *param, time_t creationtime)
-{
- if (IsServer(cptr) && DoesOp(mode) && creationtime)
- sendto_one(cptr, ":%s MODE %s %s %s " TIME_T_FMT,
- from, name, mode, param, creationtime);
- else
- sendto_one(cptr, ":%s MODE %s %s %s", from, name, mode, param);
+ send_buffer(cptr, mb, 0); /* Send this message */
+ msgq_clean(mb);
+ } /* Continue when there was something
+ that didn't fit (full==1) */
+ if (opped_members)
+ MyFree(opped_members);
+ if (feature_bool(FEAT_TOPIC_BURST) && (chptr->topic[0] != '\0'))
+ sendcmdto_one(&me, CMD_TOPIC, cptr, "%H %Tu %Tu :%s", chptr,
+ chptr->creationtime, chptr->topic_time, chptr->topic);
}
-/*
+/** Canonify a mask.
* pretty_mask
*
- * by Carlo Wood (Run), 05 Oct 1998.
- *
- * Canonify a mask.
+ * @author Carlo Wood (Run),
+ * 05 Oct 1998.
*
* When the nick is longer then NICKLEN, it is cut off (its an error of course).
* When the user name or host name are too long (USERLEN and HOSTLEN
* The following transformations are made:
*
* 1) xxx -> nick!*@*
- * 2) xxx.xxx -> *!*@host
- * 3) xxx!yyy -> nick!user@*
- * 4) xxx@yyy -> *!user@host
- * 5) xxx!yyy@zzz -> nick!user@host
+ * 2) xxx.xxx -> *!*\@host
+ * 3) xxx\!yyy -> nick!user\@*
+ * 4) xxx\@yyy -> *!user\@host
+ * 5) xxx!yyy\@zzz -> nick!user\@host
+ *
+ * @param mask The uncanonified mask.
+ * @returns The updated mask in a static buffer.
*/
char *pretty_mask(char *mask)
{
static char star[2] = { '*', 0 };
+ static char retmask[NICKLEN + USERLEN + HOSTLEN + 3];
char *last_dot = NULL;
char *ptr;
user = mask;
host = ++ptr;
}
- else if (*ptr == '.')
+ else if (*ptr == '.' || *ptr == ':')
{
- /* Case 2: Found last '.' (without finding a '!' or '@' yet) */
+ /* Case 2: Found character specific to IP or hostname (without
+ * finding a '!' or '@' yet) */
last_dot = ptr;
continue;
}
{
if (*ptr == '@')
{
- /* Case 4 or 5: Found last '@' */
- host = ptr + 1;
+ /* Case 4 or 5: Found last '@' */
+ host = ptr + 1;
}
}
break;
host = ptr - HOSTLEN;
*host = '*';
}
- return make_nick_user_host(nick, user, host);
+ ircd_snprintf(0, retmask, sizeof(retmask), "%s!%s@%s", nick, user, host);
+ return retmask;
}
-static char bmodebuf[MODEBUFLEN], bparambuf[MODEBUFLEN];
-static char nbparambuf[MODEBUFLEN]; /* "Numeric" Bounce Parameter Buffer */
+/** send a banlist to a client for a channel
+ *
+ * @param cptr Client to send the banlist to.
+ * @param chptr Channel whose banlist to send.
+ */
+static void send_ban_list(struct Client* cptr, struct Channel* chptr)
+{
+ struct Ban* lp;
+
+ assert(0 != cptr);
+ assert(0 != chptr);
-/*
- * Check and try to apply the channel modes passed in the parv array for
- * the client ccptr to channel chptr. The resultant changes are printed
- * into mbuf and pbuf (if any) and applied to the channel.
+ for (lp = chptr->banlist; lp; lp = lp->next)
+ send_reply(cptr, RPL_BANLIST, chptr->chname, lp->banstr,
+ lp->who, lp->when);
+
+ send_reply(cptr, RPL_ENDOFBANLIST, chptr->chname);
+}
+
+/** Get a channel block, creating if necessary.
+ * Get Channel block for chname (and allocate a new channel
+ * block, if it didn't exists before).
+ *
+ * @param cptr Client joining the channel.
+ * @param chname The name of the channel to join.
+ * @param flag set to CGT_CREATE to create the channel if it doesn't
+ * exist
+ *
+ * @returns NULL if the channel is invalid, doesn't exist and CGT_CREATE
+ * wasn't specified or a pointer to the channel structure
*/
-static int set_mode(aClient *cptr, aClient *sptr, aChannel *chptr, int parc,
- char *parv[], char *mbuf, char *pbuf, char *npbuf, int *badop)
+struct Channel *get_channel(struct Client *cptr, char *chname, ChannelGetType flag)
{
- static Link chops[MAXPARA - 2]; /* This size is only needed when a broken
- server sends more then MAXMODEPARAMS
- parameters */
- static int flags[] = {
- MODE_PRIVATE, 'p', MODE_SECRET, 's',
- MODE_MODERATED, 'm', MODE_NOPRIVMSGS, 'n',
- MODE_TOPICLIMIT, 't', MODE_INVITEONLY, 'i',
- MODE_VOICE, 'v', MODE_KEY, 'k',
- 0x0, 0x0
- };
+ struct Channel *chptr;
+ int len;
- Reg1 Link *lp;
- Reg2 char *curr = parv[0], *cp = NULL;
- Reg3 int *ip;
- Link *member, *tmp = NULL;
- unsigned int whatt = MODE_ADD, bwhatt = 0;
- int limitset = 0, bounce, add_banid_called = 0;
- size_t len, nlen, blen, nblen;
- int keychange = 0;
- unsigned int nusers = 0, newmode;
- int opcnt = 0, banlsent = 0;
- int doesdeop = 0, doesop = 0, hacknotice = 0, change, gotts = 0;
- aClient *who;
- Mode *mode, oldm;
- static char numeric[16];
- char *bmbuf = bmodebuf, *bpbuf = bparambuf, *nbpbuf = nbparambuf;
- time_t newtime = (time_t) 0;
- aConfItem *aconf;
-
- *mbuf = *pbuf = *npbuf = *bmbuf = *bpbuf = *nbpbuf = '\0';
- *badop = 0;
- if (parc < 1)
- return 0;
+ if (EmptyString(chname))
+ return NULL;
+
+ len = strlen(chname);
+ if (MyUser(cptr) && len > CHANNELLEN)
+ {
+ len = CHANNELLEN;
+ *(chname + CHANNELLEN) = '\0';
+ }
+ if ((chptr = FindChannel(chname)))
+ return (chptr);
+ if (flag == CGT_CREATE)
+ {
+ chptr = (struct Channel*) MyMalloc(sizeof(struct Channel) + len);
+ assert(0 != chptr);
+ ++UserStats.channels;
+ memset(chptr, 0, sizeof(struct Channel));
+ strcpy(chptr->chname, chname);
+ if (GlobalChannelList)
+ GlobalChannelList->prev = chptr;
+ chptr->prev = NULL;
+ chptr->next = GlobalChannelList;
+ chptr->creationtime = MyUser(cptr) ? TStime() : (time_t) 0;
+ GlobalChannelList = chptr;
+ hAddChannel(chptr);
+ }
+ return chptr;
+}
+
+/** invite a user to a channel.
+ *
+ * Adds an invite for a user to a channel. Limits the number of invites
+ * to FEAT_MAXCHANNELSPERUSER. Does not sent notification to the user.
+ *
+ * @param cptr The client to be invited.
+ * @param chptr The channel to be invited to.
+ */
+void add_invite(struct Client *cptr, struct Channel *chptr)
+{
+ struct SLink *inv, **tmp;
- mode = &(chptr->mode);
- memcpy(&oldm, mode, sizeof(Mode));
+ del_invite(cptr, chptr);
/*
- * Mode is accepted when sptr is a channel operator
- * but also when the mode is received from a server.
- * At this point, let any member pass, so they are allowed
- * to see the bans.
+ * Delete last link in chain if the list is max length
*/
- if (!(IsServer(cptr) || (tmp = IsMember(sptr, chptr))))
- return 0;
+ assert(list_length((cli_user(cptr))->invited) == (cli_user(cptr))->invites);
+ if ((cli_user(cptr))->invites >= feature_int(FEAT_MAXCHANNELSPERUSER))
+ del_invite(cptr, (cli_user(cptr))->invited->value.chptr);
+ /*
+ * Add client to channel invite list
+ */
+ inv = make_link();
+ inv->value.cptr = cptr;
+ inv->next = chptr->invites;
+ chptr->invites = inv;
+ /*
+ * Add channel to the end of the client invite list
+ */
+ for (tmp = &((cli_user(cptr))->invited); *tmp; tmp = &((*tmp)->next));
+ inv = make_link();
+ inv->value.chptr = chptr;
+ inv->next = NULL;
+ (*tmp) = inv;
+ (cli_user(cptr))->invites++;
+}
- newmode = mode->mode;
+/** Delete an invite
+ * Delete Invite block from channel invite list and client invite list
+ *
+ * @param cptr Client pointer
+ * @param chptr Channel pointer
+ */
+void del_invite(struct Client *cptr, struct Channel *chptr)
+{
+ struct SLink **inv, *tmp;
- while (curr && *curr)
- {
- switch (*curr)
+ for (inv = &(chptr->invites); (tmp = *inv); inv = &tmp->next)
+ if (tmp->value.cptr == cptr)
{
- case '+':
- whatt = MODE_ADD;
- break;
- case '-':
- whatt = MODE_DEL;
- break;
- case 'o':
- case 'v':
- if (--parc <= 0)
- break;
- parv++;
- if (MyUser(sptr) && opcnt >= MAXMODEPARAMS)
- break;
- /*
- * Check for nickname changes and try to follow these
- * to make sure the right client is affected by the
- * mode change.
- * Even if we find a nick with find_chasing() there
- * is still a reason to ignore in a special case.
- * We need to ignore the mode when:
- * - It is part of a net.burst (from a server and
- * a MODE_ADD). Ofcourse we don't ignore mode
- * changes from Uworld.
- * - The found nick is not on the right side off
- * the net.junction.
- * This fixes the bug that when someone (tries to)
- * ride a net.break and does so with the nick of
- * someone on the otherside, that he is nick collided
- * (killed) but his +o still ops the other person.
- */
- if (MyUser(sptr) || Protocol(cptr) < 10)
- {
- if (!(who = find_chasing(sptr, parv[0], NULL)))
- break;
- }
- else
- {
- if (!(who = findNUser(parv[0])))
- break;
- }
- if (whatt == MODE_ADD && IsServer(sptr) && who->from != sptr->from &&
- !find_conf_host(cptr->confs, sptr->name, CONF_UWORLD))
- break;
- if (!(member = find_user_link(chptr->members, who)) ||
- (MyUser(sptr) && (member->flags & CHFL_ZOMBIE)))
- {
- sendto_one(cptr, err_str(ERR_USERNOTINCHANNEL),
- me.name, cptr->name, who->name, chptr->chname);
- break;
- }
- /* if the user is +k, prevent a deop from local user */
- if (whatt == MODE_DEL && IsChannelService(who) &&
- MyUser(cptr) && *curr == 'o')
- {
- sendto_one(cptr, err_str(ERR_ISCHANSERVICE), me.name,
- cptr->name, parv[0], chptr->chname);
- break;
- }
- if (whatt == MODE_ADD)
- {
- lp = &chops[opcnt++];
- lp->value.cptr = who;
- if (IsServer(sptr) && (!(who->flags & FLAGS_TS8) || ((*curr == 'o') &&
- !(member->flags & (CHFL_SERVOPOK | CHFL_CHANOP)))))
- *badop = ((member->flags & CHFL_DEOPPED) && (*curr == 'o')) ? 2 : 3;
- lp->flags = (*curr == 'o') ? MODE_CHANOP : MODE_VOICE;
- lp->flags |= MODE_ADD;
- }
- else if (whatt == MODE_DEL)
- {
- lp = &chops[opcnt++];
- lp->value.cptr = who;
- doesdeop = 1; /* Also when -v */
- lp->flags = (*curr == 'o') ? MODE_CHANOP : MODE_VOICE;
- lp->flags |= MODE_DEL;
- }
- if (*curr == 'o')
- doesop = 1;
- break;
- case 'k':
- if (--parc <= 0)
- break;
- parv++;
- /* check now so we eat the parameter if present */
- if (keychange)
- break;
- else
- {
- char *s = &(*parv)[-1];
- unsigned short count = KEYLEN + 1;
+ *inv = tmp->next;
+ free_link(tmp);
+ tmp = 0;
+ (cli_user(cptr))->invites--;
+ break;
+ }
- while (*++s > ' ' && *s != ':' && --count);
- *s = '\0';
- if (!**parv) /* nothing left in key */
- break;
- }
- if (MyUser(sptr) && opcnt >= MAXMODEPARAMS)
- break;
- if (whatt == MODE_ADD)
- {
- if (*mode->key && !IsServer(cptr))
- sendto_one(cptr, err_str(ERR_KEYSET),
- me.name, cptr->name, chptr->chname);
- else if (!*mode->key || IsServer(cptr))
- {
- lp = &chops[opcnt++];
- lp->value.cp = *parv;
- if (strlen(lp->value.cp) > (size_t)KEYLEN)
- lp->value.cp[KEYLEN] = '\0';
- lp->flags = MODE_KEY | MODE_ADD;
- keychange = 1;
- }
- }
- else if (whatt == MODE_DEL)
- {
- if (strCasediff(mode->key, *parv) == 0 || IsServer(cptr))
- {
- lp = &chops[opcnt++];
- lp->value.cp = mode->key;
- lp->flags = MODE_KEY | MODE_DEL;
- keychange = 1;
- }
- }
- break;
- case 'b':
- if (--parc <= 0)
- {
- if (banlsent) /* Only send it once */
- break;
- for (lp = chptr->banlist; lp; lp = lp->next)
- sendto_one(cptr, rpl_str(RPL_BANLIST), me.name, cptr->name,
- chptr->chname, lp->value.ban.banstr, lp->value.ban.who,
- lp->value.ban.when);
- sendto_one(cptr, rpl_str(RPL_ENDOFBANLIST), me.name, cptr->name,
- chptr->chname);
- banlsent = 1;
- break;
- }
- parv++;
- if (BadPtr(*parv))
- break;
- if (MyUser(sptr))
- {
- if ((cp = strchr(*parv, ' ')))
- *cp = 0;
- if (opcnt >= MAXMODEPARAMS || **parv == ':' || **parv == '\0')
- break;
- }
- if (whatt == MODE_ADD)
- {
- lp = &chops[opcnt++];
- lp->value.cp = *parv;
- lp->flags = MODE_ADD | MODE_BAN;
- }
- else if (whatt == MODE_DEL)
- {
- lp = &chops[opcnt++];
- lp->value.cp = *parv;
- lp->flags = MODE_DEL | MODE_BAN;
- }
- break;
- case 'l':
- /*
- * limit 'l' to only *1* change per mode command but
- * eat up others.
- */
- if (limitset)
- {
- if (whatt == MODE_ADD && --parc > 0)
- parv++;
- break;
- }
- if (whatt == MODE_DEL)
- {
- limitset = 1;
- nusers = 0;
- break;
- }
- if (--parc > 0)
- {
- if (BadPtr(*parv))
- break;
- if (MyUser(sptr) && opcnt >= MAXMODEPARAMS)
- break;
- if (!(nusers = atoi(*++parv)))
- continue;
- lp = &chops[opcnt++];
- lp->flags = MODE_ADD | MODE_LIMIT;
- limitset = 1;
- break;
- }
- sendto_one(cptr, err_str(ERR_NEEDMOREPARAMS),
- me.name, cptr->name, "MODE +l");
- break;
- case 'i': /* falls through for default case */
- if (whatt == MODE_DEL)
- while ((lp = chptr->invites))
- del_invite(lp->value.cptr, chptr);
- default:
- for (ip = flags; *ip; ip += 2)
- if (*(ip + 1) == *curr)
- break;
-
- if (*ip)
- {
- if (whatt == MODE_ADD)
- {
- if (*ip == MODE_PRIVATE)
- newmode &= ~MODE_SECRET;
- else if (*ip == MODE_SECRET)
- newmode &= ~MODE_PRIVATE;
- newmode |= *ip;
- }
- else
- newmode &= ~*ip;
- }
- else if (!IsServer(cptr))
- sendto_one(cptr, err_str(ERR_UNKNOWNMODE),
- me.name, cptr->name, *curr);
- break;
- }
- curr++;
- /*
- * Make sure mode strings such as "+m +t +p +i" are parsed
- * fully.
- */
- if (!*curr && parc > 0)
- {
- curr = *++parv;
- parc--;
- /* If this was from a server, and it is the last
- * parameter and it starts with a digit, it must
- * be the creationtime. --Run
- */
- if (IsServer(sptr))
- {
- if (parc == 1 && isDigit(*curr))
- {
- newtime = atoi(curr);
- if (newtime && chptr->creationtime == MAGIC_REMOTE_JOIN_TS)
- {
- chptr->creationtime = newtime;
- *badop = 0;
- }
- gotts = 1;
- if (newtime == 0)
- {
- *badop = 2;
- hacknotice = 1;
- }
- else if (newtime > chptr->creationtime)
- { /* It is a net-break ride if we have ops.
- bounce modes if we have ops. --Run */
- if (doesdeop)
- *badop = 2;
- else if (chptr->creationtime == 0)
- {
- if (chptr->creationtime == 0 || doesop)
- chptr->creationtime = newtime;
- *badop = 0;
- }
- /* Bounce: */
- else
- *badop = 1;
- }
- /*
- * A legal *badop can occur when two
- * people join simultaneously a channel,
- * Allow for 10 min of lag (and thus hacking
- * on channels younger then 10 min) --Run
- */
- else if (*badop == 0 ||
- chptr->creationtime > (TStime() - TS_LAG_TIME))
- {
- if (newtime < chptr->creationtime)
- chptr->creationtime = newtime;
- *badop = 0;
- }
- break;
- }
- }
- else
- *badop = 0;
- }
- } /* end of while loop for MODE processing */
-
- /* Now reject non chan ops */
- if (!IsServer(cptr) && (!tmp || !(tmp->flags & CHFL_CHANOP)))
- {
- *badop = 0;
- return (opcnt || newmode != mode->mode || limitset || keychange) ? 0 : -1;
- }
-
- if (doesop && newtime == 0 && IsServer(sptr))
- *badop = 2;
-
- if (*badop >= 2 &&
- (aconf = find_conf_host(cptr->confs, sptr->name, CONF_UWORLD)))
- *badop = 4;
-
- bounce = (*badop == 1 || *badop == 2 || is_deopped(sptr, chptr)) ? 1 : 0;
-
- whatt = 0;
- for (ip = flags; *ip; ip += 2)
- if ((*ip & newmode) && !(*ip & oldm.mode))
- {
- if (bounce)
- {
- if (bwhatt != MODE_DEL)
- {
- *bmbuf++ = '-';
- bwhatt = MODE_DEL;
- }
- *bmbuf++ = *(ip + 1);
- }
- else
- {
- if (whatt != MODE_ADD)
- {
- *mbuf++ = '+';
- whatt = MODE_ADD;
- }
- mode->mode |= *ip;
- *mbuf++ = *(ip + 1);
- }
- }
-
- for (ip = flags; *ip; ip += 2)
- if ((*ip & oldm.mode) && !(*ip & newmode))
- {
- if (bounce)
- {
- if (bwhatt != MODE_ADD)
- {
- *bmbuf++ = '+';
- bwhatt = MODE_ADD;
- }
- *bmbuf++ = *(ip + 1);
- }
- else
- {
- if (whatt != MODE_DEL)
- {
- *mbuf++ = '-';
- whatt = MODE_DEL;
- }
- mode->mode &= ~*ip;
- *mbuf++ = *(ip + 1);
- }
- }
-
- blen = nblen = 0;
- if (limitset && !nusers && mode->limit)
- {
- if (bounce)
- {
- if (bwhatt != MODE_ADD)
- {
- *bmbuf++ = '+';
- bwhatt = MODE_ADD;
- }
- *bmbuf++ = 'l';
- sprintf(numeric, "%-15d", mode->limit);
- if ((cp = strchr(numeric, ' ')))
- *cp = '\0';
- strcat(bpbuf, numeric);
- blen += strlen(numeric);
- strcat(bpbuf, " ");
- strcat(nbpbuf, numeric);
- nblen += strlen(numeric);
- strcat(nbpbuf, " ");
- }
- else
+ for (inv = &((cli_user(cptr))->invited); (tmp = *inv); inv = &tmp->next)
+ if (tmp->value.chptr == chptr)
{
- if (whatt != MODE_DEL)
- {
- *mbuf++ = '-';
- whatt = MODE_DEL;
- }
- mode->mode &= ~MODE_LIMIT;
- mode->limit = 0;
- *mbuf++ = 'l';
+ *inv = tmp->next;
+ free_link(tmp);
+ tmp = 0;
+ break;
}
- }
- /*
- * Reconstruct "+bkov" chain.
- */
- if (opcnt)
- {
- Reg1 int i = 0;
- Reg2 char c = 0;
- unsigned int prev_whatt = 0;
-
- for (; i < opcnt; i++)
- {
- lp = &chops[i];
- /*
- * make sure we have correct mode change sign
- */
- if (whatt != (lp->flags & (MODE_ADD | MODE_DEL)))
- {
- if (lp->flags & MODE_ADD)
- {
- *mbuf++ = '+';
- prev_whatt = whatt;
- whatt = MODE_ADD;
- }
- else
- {
- *mbuf++ = '-';
- prev_whatt = whatt;
- whatt = MODE_DEL;
- }
- }
- len = strlen(pbuf);
- nlen = strlen(npbuf);
- /*
- * get c as the mode char and tmp as a pointer to
- * the parameter for this mode change.
- */
- switch (lp->flags & MODE_WPARAS)
- {
- case MODE_CHANOP:
- c = 'o';
- cp = lp->value.cptr->name;
- break;
- case MODE_VOICE:
- c = 'v';
- cp = lp->value.cptr->name;
- break;
- case MODE_BAN:
- /*
- * I made this a bit more user-friendly (tm):
- * nick = nick!*@*
- * nick!user = nick!user@*
- * user@host = *!user@host
- * host.name = *!*@host.name --Run
- */
- c = 'b';
- cp = pretty_mask(lp->value.cp);
- break;
- case MODE_KEY:
- c = 'k';
- cp = lp->value.cp;
- break;
- case MODE_LIMIT:
- c = 'l';
- sprintf(numeric, "%-15d", nusers);
- if ((cp = strchr(numeric, ' ')))
- *cp = '\0';
- cp = numeric;
- break;
- }
-
- /* What could be added: cp+' '+' '+<TS>+'\0' */
- if (len + strlen(cp) + 13 > (size_t)MODEBUFLEN ||
- nlen + strlen(cp) + NUMNICKLEN + 12 > (size_t)MODEBUFLEN)
- break;
+}
- switch (lp->flags & MODE_WPARAS)
- {
- case MODE_KEY:
- if (strlen(cp) > (size_t)KEYLEN)
- *(cp + KEYLEN) = '\0';
- if ((whatt == MODE_ADD && (*mode->key == '\0' ||
- strCasediff(mode->key, cp) != 0)) ||
- (whatt == MODE_DEL && (*mode->key != '\0')))
- {
- if (bounce)
- {
- if (*mode->key == '\0')
- {
- if (bwhatt != MODE_DEL)
- {
- *bmbuf++ = '-';
- bwhatt = MODE_DEL;
- }
- strcat(bpbuf, cp);
- blen += strlen(cp);
- strcat(bpbuf, " ");
- blen++;
- strcat(nbpbuf, cp);
- nblen += strlen(cp);
- strcat(nbpbuf, " ");
- nblen++;
- }
- else
- {
- if (bwhatt != MODE_ADD)
- {
- *bmbuf++ = '+';
- bwhatt = MODE_ADD;
- }
- strcat(bpbuf, mode->key);
- blen += strlen(mode->key);
- strcat(bpbuf, " ");
- blen++;
- strcat(nbpbuf, mode->key);
- nblen += strlen(mode->key);
- strcat(nbpbuf, " ");
- nblen++;
- }
- *bmbuf++ = c;
- mbuf--;
- if (*mbuf != '+' && *mbuf != '-')
- mbuf++;
- else
- whatt = prev_whatt;
- }
- else
- {
- *mbuf++ = c;
- strcat(pbuf, cp);
- len += strlen(cp);
- strcat(pbuf, " ");
- len++;
- strcat(npbuf, cp);
- nlen += strlen(cp);
- strcat(npbuf, " ");
- nlen++;
- if (whatt == MODE_ADD)
- strncpy(mode->key, cp, KEYLEN);
- else
- *mode->key = '\0';
- }
- }
- break;
- case MODE_LIMIT:
- if (nusers && nusers != mode->limit)
- {
- if (bounce)
- {
- if (mode->limit == 0)
- {
- if (bwhatt != MODE_DEL)
- {
- *bmbuf++ = '-';
- bwhatt = MODE_DEL;
- }
- }
- else
- {
- if (bwhatt != MODE_ADD)
- {
- *bmbuf++ = '+';
- bwhatt = MODE_ADD;
- }
- sprintf(numeric, "%-15d", mode->limit);
- if ((cp = strchr(numeric, ' ')))
- *cp = '\0';
- strcat(bpbuf, numeric);
- blen += strlen(numeric);
- strcat(bpbuf, " ");
- blen++;
- strcat(nbpbuf, numeric);
- nblen += strlen(numeric);
- strcat(nbpbuf, " ");
- nblen++;
- }
- *bmbuf++ = c;
- mbuf--;
- if (*mbuf != '+' && *mbuf != '-')
- mbuf++;
- else
- whatt = prev_whatt;
- }
- else
- {
- *mbuf++ = c;
- strcat(pbuf, cp);
- len += strlen(cp);
- strcat(pbuf, " ");
- len++;
- strcat(npbuf, cp);
- nlen += strlen(cp);
- strcat(npbuf, " ");
- nlen++;
- mode->limit = nusers;
- }
- }
- break;
- case MODE_CHANOP:
- case MODE_VOICE:
- tmp = find_user_link(chptr->members, lp->value.cptr);
- if (lp->flags & MODE_ADD)
- {
- change = (~tmp->flags) & CHFL_OVERLAP & lp->flags;
- if (change && bounce)
- {
- if (lp->flags & MODE_CHANOP)
- tmp->flags |= CHFL_DEOPPED;
- if (bwhatt != MODE_DEL)
- {
- *bmbuf++ = '-';
- bwhatt = MODE_DEL;
- }
- *bmbuf++ = c;
- strcat(bpbuf, lp->value.cptr->name);
- blen += strlen(lp->value.cptr->name);
- strcat(bpbuf, " ");
- blen++;
- sprintf_irc(nbpbuf + nblen, "%s%s ", NumNick(lp->value.cptr));
- nblen += strlen(nbpbuf + nblen);
- change = 0;
- }
- else if (change)
- {
- tmp->flags |= lp->flags & CHFL_OVERLAP;
- if (lp->flags & MODE_CHANOP)
- {
- tmp->flags &= ~CHFL_DEOPPED;
- if (IsServer(sptr))
- tmp->flags &= ~CHFL_SERVOPOK;
- }
- }
- }
- else
- {
- change = tmp->flags & CHFL_OVERLAP & lp->flags;
- if (change && bounce)
- {
- if (lp->flags & MODE_CHANOP)
- tmp->flags &= ~CHFL_DEOPPED;
- if (bwhatt != MODE_ADD)
- {
- *bmbuf++ = '+';
- bwhatt = MODE_ADD;
- }
- *bmbuf++ = c;
- strcat(bpbuf, lp->value.cptr->name);
- blen += strlen(lp->value.cptr->name);
- strcat(bpbuf, " ");
- blen++;
- sprintf_irc(nbpbuf + nblen, "%s%s ", NumNick(lp->value.cptr));
- blen += strlen(bpbuf + blen);
- change = 0;
- }
- else
- {
- tmp->flags &= ~change;
- if ((change & MODE_CHANOP) && IsServer(sptr))
- tmp->flags |= CHFL_DEOPPED;
- }
- }
- if (change || *badop == 2 || *badop == 4)
- {
- *mbuf++ = c;
- strcat(pbuf, cp);
- len += strlen(cp);
- strcat(pbuf, " ");
- len++;
- sprintf_irc(npbuf + nlen, "%s%s ", NumNick(lp->value.cptr));
- nlen += strlen(npbuf + nlen);
- npbuf[nlen++] = ' ';
- npbuf[nlen] = 0;
- }
- else
- {
- mbuf--;
- if (*mbuf != '+' && *mbuf != '-')
- mbuf++;
- else
- whatt = prev_whatt;
- }
- break;
- case MODE_BAN:
-/*
- * Only bans aren't bounced, it makes no sense to bounce last second
- * bans while propagating bans done before the net.rejoin. The reason
- * why I don't bounce net.rejoin bans is because it is too much
- * work to take care of too long strings adding the necessary TS to
- * net.burst bans -- RunLazy
- * We do have to check for *badop==2 now, we don't want HACKs to take
- * effect.
+/** @page zombie Explanation of Zombies
+ *
+ * Synopsis:
+ *
+ * A channel member is turned into a zombie when he is kicked from a
+ * channel but his server has not acknowledged the kick. Servers that
+ * see the member as a zombie can accept actions he performed before
+ * being kicked, without allowing chanop operations from outsiders or
+ * desyncing the network.
+ *
+ * Consider:
+ * <pre>
+ * client
+ * |
+ * c
+ * |
+ * X --a--> A --b--> B --d--> D
+ * |
+ * who
+ * </pre>
*
- * Since BURST - I *did* implement net.rejoin ban bouncing. So now it
- * certainly makes sense to also bounce 'last second' bans (bans done
- * after the net.junction). -- RunHardWorker
+ * Where `who' is being KICK-ed by a "KICK" message received by server 'A'
+ * via 'a', or on server 'B' via either 'b' or 'c', or on server D via 'd'.
+ *
+ * a) On server A : set CHFL_ZOMBIE for `who' (lp) and pass on the KICK.
+ * Remove the user immediately when no users are left on the channel.
+ * b) On server B : remove the user (who/lp) from the channel, send a
+ * PART upstream (to A) and pass on the KICK.
+ * c) KICKed by `client'; On server B : remove the user (who/lp) from the
+ * channel, and pass on the KICK.
+ * d) On server D : remove the user (who/lp) from the channel, and pass on
+ * the KICK.
+ *
+ * Note:
+ * - Setting the ZOMBIE flag never hurts, we either remove the
+ * client after that or we don't.
+ * - The KICK message was already passed on, as should be in all cases.
+ * - `who' is removed in all cases except case a) when users are left.
+ * - A PART is only sent upstream in case b).
+ *
+ * 2 aug 97:
+ * <pre>
+ * 6
+ * |
+ * 1 --- 2 --- 3 --- 4 --- 5
+ * | |
+ * kicker who
+ * </pre>
+ *
+ * We also need to turn 'who' into a zombie on servers 1 and 6,
+ * because a KICK from 'who' (kicking someone else in that direction)
+ * can arrive there afterward - which should not be bounced itself.
+ * Therefore case a) also applies for servers 1 and 6.
+ *
+ * --Run
*/
- if ((change = (whatt & MODE_ADD) &&
- !add_banid(sptr, chptr, cp, !bounce, !add_banid_called)))
- add_banid_called = 1;
- else
- change = (whatt & MODE_DEL) && !del_banid(chptr, cp, !bounce);
- if (bounce && change)
- {
- change = 0;
- if ((whatt & MODE_ADD))
- {
- if (bwhatt != MODE_DEL)
- {
- *bmbuf++ = '-';
- bwhatt = MODE_DEL;
- }
- }
- else if ((whatt & MODE_DEL))
- {
- if (bwhatt != MODE_ADD)
- {
- *bmbuf++ = '+';
- bwhatt = MODE_ADD;
- }
- }
- *bmbuf++ = c;
- strcat(bpbuf, cp);
- blen += strlen(cp);
- strcat(bpbuf, " ");
- blen++;
- strcat(nbpbuf, cp);
- nblen += strlen(cp);
- strcat(nbpbuf, " ");
- nblen++;
- }
- if (change)
- {
- *mbuf++ = c;
- strcat(pbuf, cp);
- len += strlen(cp);
- strcat(pbuf, " ");
- len++;
- strcat(npbuf, cp);
- nlen += strlen(cp);
- strcat(npbuf, " ");
- nlen++;
- }
- else
- {
- mbuf--;
- if (*mbuf != '+' && *mbuf != '-')
- mbuf++;
- else
- whatt = prev_whatt;
- }
- break;
- }
- } /* for (; i < opcnt; i++) */
- } /* if (opcnt) */
+/** Turn a user on a channel into a zombie
+ * This function turns a user into a zombie (see \ref zombie)
+ *
+ * @param member The structure representing this user on this channel.
+ * @param who The client that is being kicked.
+ * @param cptr The connection the kick came from.
+ * @param sptr The client that is doing the kicking.
+ * @param chptr The channel the user is being kicked from.
+ */
+void make_zombie(struct Membership* member, struct Client* who,
+ struct Client* cptr, struct Client* sptr, struct Channel* chptr)
+{
+ assert(0 != member);
+ assert(0 != who);
+ assert(0 != cptr);
+ assert(0 != chptr);
- *mbuf++ = '\0';
- *bmbuf++ = '\0';
+ /* Default for case a): */
+ SetZombie(member);
- /* Bounce here */
- if (!hacknotice && *bmodebuf && chptr->creationtime)
+ /* Case b) or c) ?: */
+ if (MyUser(who)) /* server 4 */
{
- if (Protocol(cptr) < 10)
- sendto_one(cptr, ":%s MODE %s %s %s " TIME_T_FMT,
- me.name, chptr->chname, bmodebuf, bparambuf,
- *badop == 2 ? (time_t) 0 : chptr->creationtime);
- else
- sendto_one(cptr, "%s MODE %s %s %s " TIME_T_FMT,
- NumServ(&me), chptr->chname, bmodebuf, nbparambuf,
- *badop == 2 ? (time_t) 0 : chptr->creationtime);
+ if (IsServer(cptr)) /* Case b) ? */
+ sendcmdto_one(who, CMD_PART, cptr, "%H", chptr);
+ remove_user_from_channel(who, chptr);
+ return;
}
- /* If there are possibly bans to re-add, bounce them now */
- if (add_banid_called && bounce)
+ if (cli_from(who) == cptr) /* True on servers 1, 5 and 6 */
{
- Link *ban[6]; /* Max 6 bans at a time */
- size_t len[6], sblen, total_len;
- int cnt, delayed = 0;
- while (delayed || (ban[0] = next_overlapped_ban()))
- {
- len[0] = strlen(ban[0]->value.ban.banstr);
- cnt = 1; /* We already got one ban :) */
- sblen = sprintf_irc(sendbuf, ":%s MODE %s +b",
- me.name, chptr->chname) - sendbuf;
- total_len = sblen + 1 + len[0]; /* 1 = ' ' */
- /* Find more bans: */
- delayed = 0;
- while (cnt < 6 && (ban[cnt] = next_overlapped_ban()))
+ struct Client *acptr = IsServer(sptr) ? sptr : (cli_user(sptr))->server;
+ for (; acptr != &me; acptr = (cli_serv(acptr))->up)
+ if (acptr == (cli_user(who))->server) /* Case d) (server 5) */
{
- len[cnt] = strlen(ban[cnt]->value.ban.banstr);
- if (total_len + 5 + len[cnt] > BUFSIZE) /* 5 = "b \r\n\0" */
- {
- delayed = cnt + 1; /* != 0 */
- break; /* Flush */
- }
- sendbuf[sblen++] = 'b';
- total_len += 2 + len[cnt++]; /* 2 = "b " */
+ remove_user_from_channel(who, chptr);
+ return;
}
- while (cnt--)
- {
- sendbuf[sblen++] = ' ';
- strcpy(sendbuf + sblen, ban[cnt]->value.ban.banstr);
- sblen += len[cnt];
- }
- sendbufto_one(cptr); /* Send bounce to uplink */
- if (delayed)
- ban[0] = ban[delayed - 1];
- }
- }
- /* Send -b's of overlapped bans to clients to keep them synchronized */
- if (add_banid_called && !bounce)
- {
- Link *ban;
- char *banstr[6]; /* Max 6 bans at a time */
- size_t len[6], sblen, psblen, total_len;
- int cnt, delayed = 0;
- Link *lp;
- aClient *acptr;
- if (IsServer(sptr))
- psblen = sprintf_irc(sendbuf, ":%s MODE %s -b",
- sptr->name, chptr->chname) - sendbuf;
- else /* We rely on IsRegistered(sptr) being true for MODE */
- psblen = sprintf_irc(sendbuf, ":%s!%s@%s MODE %s -b", sptr->name,
- sptr->user->username, sptr->user->host, chptr->chname) - sendbuf;
- while (delayed || (ban = next_removed_overlapped_ban()))
- {
- if (!delayed)
- {
- len[0] = strlen((banstr[0] = ban->value.ban.banstr));
- ban->value.ban.banstr = NULL;
- }
- cnt = 1; /* We already got one ban :) */
- sblen = psblen;
- total_len = sblen + 1 + len[0]; /* 1 = ' ' */
- /* Find more bans: */
- delayed = 0;
- while (cnt < 6 && (ban = next_removed_overlapped_ban()))
- {
- len[cnt] = strlen((banstr[cnt] = ban->value.ban.banstr));
- ban->value.ban.banstr = NULL;
- if (total_len + 5 + len[cnt] > BUFSIZE) /* 5 = "b \r\n\0" */
- {
- delayed = cnt + 1; /* != 0 */
- break; /* Flush */
- }
- sendbuf[sblen++] = 'b';
- total_len += 2 + len[cnt++]; /* 2 = "b " */
- }
- while (cnt--)
- {
- sendbuf[sblen++] = ' ';
- strcpy(sendbuf + sblen, banstr[cnt]);
- RunFree(banstr[cnt]);
- sblen += len[cnt];
- }
- for (lp = chptr->members; lp; lp = lp->next)
- if (MyConnect(acptr = lp->value.cptr) && !(lp->flags & CHFL_ZOMBIE))
- sendbufto_one(acptr);
- if (delayed)
- {
- banstr[0] = banstr[delayed - 1];
- len[0] = len[delayed - 1];
- }
- }
}
- return gotts ? 1 : -1;
+ /* Case a) (servers 1, 2, 3 and 6) */
+ if (channel_all_zombies(chptr))
+ remove_user_from_channel(who, chptr);
+
+ /* XXX Can't actually call Debug here; if the channel is all zombies,
+ * chptr will no longer exist when we get here.
+ Debug((DEBUG_INFO, "%s is now a zombie on %s", who->name, chptr->chname));
+ */
}
-/* We are now treating the <key> part of /join <channel list> <key> as a key
- * ring; that is, we try one key against the actual channel key, and if that
- * doesn't work, we try the next one, and so on. -Kev -Texaco
- * Returns: 0 on match, 1 otherwise
- * This version contributed by SeKs <intru@info.polymtl.ca>
+/** returns the number of zombies on a channel
+ * @param chptr Channel to count zombies in.
+ *
+ * @returns The number of zombies on the channel.
*/
-static int compall(char *key, char *keyring)
+int number_of_zombies(struct Channel *chptr)
{
- register char *p1;
-
-top:
- p1 = key; /* point to the key... */
- while (*p1 && *p1 == *keyring)
- { /* step through the key and ring until they
- don't match... */
- p1++;
- keyring++;
+ struct Membership* member;
+ int count = 0;
+
+ assert(0 != chptr);
+ for (member = chptr->members; member; member = member->next_member) {
+ if (IsZombie(member))
+ ++count;
}
+ return count;
+}
- if (!*p1 && (!*keyring || *keyring == ','))
- /* ok, if we're at the end of the and also at the end of one of the keys
- in the keyring, we have a match */
- return 0;
+/** Concatenate some strings together.
+ * This helper function builds an argument string in strptr, consisting
+ * of the original string, a space, and str1 and str2 concatenated (if,
+ * of course, str2 is not NULL)
+ *
+ * @param strptr The buffer to concatenate into
+ * @param strptr_i modified offset to the position to modify
+ * @param str1 The string to concatenate from.
+ * @param str2 The second string to contatenate from.
+ * @param c Charactor to separate the string from str1 and str2.
+ */
+static void
+build_string(char *strptr, int *strptr_i, const char *str1,
+ const char *str2, char c)
+{
+ if (c)
+ strptr[(*strptr_i)++] = c;
- if (!*keyring) /* if we're at the end of the key ring, there
- weren't any matches, so we return 1 */
- return 1;
+ while (*str1)
+ strptr[(*strptr_i)++] = *(str1++);
- /* Not at the end of the key ring, so step
- through to the next key in the ring: */
- while (*keyring && *(keyring++) != ',');
+ if (str2)
+ while (*str2)
+ strptr[(*strptr_i)++] = *(str2++);
- goto top; /* and check it against the key */
+ strptr[(*strptr_i)] = '\0';
}
-static int can_join(aClient *sptr, aChannel *chptr, char *key)
+/** Flush out the modes
+ * This is the workhorse of our ModeBuf suite; this actually generates the
+ * output MODE commands, HACK notices, or whatever. It's pretty complicated.
+ *
+ * @param mbuf The mode buffer to flush
+ * @param all If true, flush all modes, otherwise leave partial modes in the
+ * buffer.
+ *
+ * @returns 0
+ */
+static int
+modebuf_flush_int(struct ModeBuf *mbuf, int all)
{
- Reg1 Link *lp;
+ /* we only need the flags that don't take args right now */
+ static int flags[] = {
+/* MODE_CHANOP, 'o', */
+/* MODE_VOICE, 'v', */
+ MODE_PRIVATE, 'p',
+ MODE_SECRET, 's',
+ MODE_MODERATED, 'm',
+ MODE_TOPICLIMIT, 't',
+ MODE_INVITEONLY, 'i',
+ MODE_NOPRIVMSGS, 'n',
+ MODE_REGONLY, 'r',
+ MODE_DELJOINS, 'D',
+ MODE_REGISTERED, 'R',
+/* MODE_KEY, 'k', */
+/* MODE_BAN, 'b', */
+ MODE_LIMIT, 'l',
+/* MODE_APASS, 'A', */
+/* MODE_UPASS, 'U', */
+ 0x0, 0x0
+ };
+ static int local_flags[] = {
+ MODE_WASDELJOINS, 'd',
+ 0x0, 0x0
+ };
+ int i;
+ int *flag_p;
- /* Now a banned user CAN join if invited -- Nemesi */
- /* Now a user CAN escape channel limit if invited -- bfriendly */
- if ((chptr->mode.mode & MODE_INVITEONLY) || (is_banned(sptr, chptr, NULL)
- || (chptr->mode.limit && chptr->users >= chptr->mode.limit)))
- {
- for (lp = sptr->user->invited; lp; lp = lp->next)
- if (lp->value.chptr == chptr)
- break;
- if (!lp)
- {
- if (chptr->mode.limit && chptr->users >= chptr->mode.limit)
- return (ERR_CHANNELISFULL);
- /* This can return an "Invite only" msg instead of the "You are banned"
- if _both_ conditions are true, but who can say what is more
- appropriate ? checking again IsBanned would be _SO_ cpu-xpensive ! */
- return ((chptr->mode.mode & MODE_INVITEONLY) ?
- ERR_INVITEONLYCHAN : ERR_BANNEDFROMCHAN);
- }
- }
+ struct Client *app_source; /* where the MODE appears to come from */
- /* now using compall (above) to test against a whole key ring -Kev */
- if (*chptr->mode.key && (BadPtr(key) || compall(chptr->mode.key, key)))
- return (ERR_BADCHANNELKEY);
+ char addbuf[20], addbuf_local[20]; /* accumulates +psmtin, etc. */
+ int addbuf_i = 0, addbuf_local_i = 0;
+ char rembuf[20], rembuf_local[20]; /* accumulates -psmtin, etc. */
+ int rembuf_i = 0, rembuf_local_i = 0;
+ char *bufptr; /* we make use of indirection to simplify the code */
+ int *bufptr_i;
- return 0;
-}
+ char addstr[BUFSIZE]; /* accumulates MODE parameters to add */
+ int addstr_i;
+ char remstr[BUFSIZE]; /* accumulates MODE parameters to remove */
+ int remstr_i;
+ char *strptr; /* more indirection to simplify the code */
+ int *strptr_i;
-/*
- * Remove bells and commas from channel name
- */
+ int totalbuflen = BUFSIZE - 200; /* fuzz factor -- don't overrun buffer! */
+ int tmp;
-static void clean_channelname(char *cn)
-{
- for (; *cn; cn++)
- {
- if (!isIrcCh(*cn))
- {
- *cn = '\0';
- return;
- }
- if (isIrcCl(*cn))
-#ifndef FIXME
- {
-#endif
- *cn = toLower(*cn);
-#ifndef FIXME
- /* Missed the Icelandic letter ETH last time: */
- if ((unsigned char)(*cn) == 0xd0)
- *cn = (char)0xf0;
- }
-#endif
- }
-}
+ char limitbuf[20]; /* convert limits to strings */
-/*
- * Get Channel block for i (and allocate a new channel
- * block, if it didn't exists before).
- */
-static aChannel *get_channel(aClient *cptr, char *chname, int flag)
-{
- Reg1 aChannel *chptr;
- int len;
+ unsigned int limitdel = MODE_LIMIT;
- if (BadPtr(chname))
- return NULL;
+ assert(0 != mbuf);
- len = strlen(chname);
- if (MyUser(cptr) && len > CHANNELLEN)
- {
- len = CHANNELLEN;
- *(chname + CHANNELLEN) = '\0';
- }
- if ((chptr = FindChannel(chname)))
- return (chptr);
- if (flag == CREATE)
- {
- chptr = (aChannel *)RunMalloc(sizeof(aChannel) + len);
- ++nrof.channels;
- memset(chptr, 0, sizeof(aChannel));
- strcpy(chptr->chname, chname);
- if (channel)
- channel->prevch = chptr;
- chptr->prevch = NULL;
- chptr->nextch = channel;
- chptr->creationtime = MyUser(cptr) ? TStime() : (time_t) 0;
- channel = chptr;
- hAddChannel(chptr);
- }
- return chptr;
-}
-
-static void add_invite(aClient *cptr, aChannel *chptr)
-{
- Reg1 Link *inv, **tmp;
+ /* If the ModeBuf is empty, we have nothing to do */
+ if (mbuf->mb_add == 0 && mbuf->mb_rem == 0 && mbuf->mb_count == 0)
+ return 0;
- del_invite(cptr, chptr);
- /*
- * Delete last link in chain if the list is max length
- */
- if (list_length(cptr->user->invited) >= MAXCHANNELSPERUSER)
- del_invite(cptr, cptr->user->invited->value.chptr);
- /*
- * Add client to channel invite list
+ /* Ok, if we were given the OPMODE flag, or its a server, hide the source.
*/
- inv = make_link();
- inv->value.cptr = cptr;
- inv->next = chptr->invites;
- chptr->invites = inv;
+ if (feature_bool(FEAT_HIS_MODEWHO) &&
+ (mbuf->mb_dest & MODEBUF_DEST_OPMODE ||
+ IsServer(mbuf->mb_source) ||
+ IsMe(mbuf->mb_source)))
+ app_source = &his;
+ else
+ app_source = mbuf->mb_source;
+
/*
- * Add channel to the end of the client invite list
+ * Account for user we're bouncing; we have to get it in on the first
+ * bounced MODE, or we could have problems
*/
- for (tmp = &(cptr->user->invited); *tmp; tmp = &((*tmp)->next));
- inv = make_link();
- inv->value.chptr = chptr;
- inv->next = NULL;
- (*tmp) = inv;
-}
-
-/*
- * Delete Invite block from channel invite list and client invite list
- */
-void del_invite(aClient *cptr, aChannel *chptr)
-{
- Reg1 Link **inv, *tmp;
+ if (mbuf->mb_dest & MODEBUF_DEST_DEOP)
+ totalbuflen -= 6; /* numeric nick == 5, plus one space */
+
+ /* Calculate the simple flags */
+ for (flag_p = flags; flag_p[0]; flag_p += 2) {
+ if (*flag_p & mbuf->mb_add)
+ addbuf[addbuf_i++] = flag_p[1];
+ else if (*flag_p & mbuf->mb_rem)
+ rembuf[rembuf_i++] = flag_p[1];
+ }
+
+ /* Some flags may be for local display only. */
+ for (flag_p = local_flags; flag_p[0]; flag_p += 2) {
+ if (*flag_p & mbuf->mb_add)
+ addbuf_local[addbuf_local_i++] = flag_p[1];
+ else if (*flag_p & mbuf->mb_rem)
+ rembuf_local[rembuf_local_i++] = flag_p[1];
+ }
+
+ /* Now go through the modes with arguments... */
+ for (i = 0; i < mbuf->mb_count; i++) {
+ if (MB_TYPE(mbuf, i) & MODE_ADD) { /* adding or removing? */
+ bufptr = addbuf;
+ bufptr_i = &addbuf_i;
+ } else {
+ bufptr = rembuf;
+ bufptr_i = &rembuf_i;
+ }
+
+ if (MB_TYPE(mbuf, i) & (MODE_CHANOP | MODE_VOICE)) {
+ tmp = strlen(cli_name(MB_CLIENT(mbuf, i)));
+
+ if ((totalbuflen - IRCD_MAX(9, tmp)) <= 0) /* don't overflow buffer */
+ MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
+ else {
+ bufptr[(*bufptr_i)++] = MB_TYPE(mbuf, i) & MODE_CHANOP ? 'o' : 'v';
+ totalbuflen -= IRCD_MAX(9, tmp) + 1;
+ }
+ } else if (MB_TYPE(mbuf, i) & (MODE_BAN | MODE_APASS | MODE_UPASS)) {
+ tmp = strlen(MB_STRING(mbuf, i));
+
+ if ((totalbuflen - tmp) <= 0) /* don't overflow buffer */
+ MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
+ else {
+ char mode_char;
+ switch(MB_TYPE(mbuf, i) & (MODE_BAN | MODE_APASS | MODE_UPASS))
+ {
+ case MODE_APASS:
+ mode_char = 'A';
+ break;
+ case MODE_UPASS:
+ mode_char = 'U';
+ break;
+ default:
+ mode_char = 'b';
+ break;
+ }
+ bufptr[(*bufptr_i)++] = mode_char;
+ totalbuflen -= tmp + 1;
+ }
+ } else if (MB_TYPE(mbuf, i) & MODE_KEY) {
+ tmp = (mbuf->mb_dest & MODEBUF_DEST_NOKEY ? 1 :
+ strlen(MB_STRING(mbuf, i)));
- for (inv = &(chptr->invites); (tmp = *inv); inv = &tmp->next)
- if (tmp->value.cptr == cptr)
- {
- *inv = tmp->next;
- free_link(tmp);
- break;
- }
+ if ((totalbuflen - tmp) <= 0) /* don't overflow buffer */
+ MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
+ else {
+ bufptr[(*bufptr_i)++] = 'k';
+ totalbuflen -= tmp + 1;
+ }
+ } else if (MB_TYPE(mbuf, i) & MODE_LIMIT) {
+ /* if it's a limit, we also format the number */
+ ircd_snprintf(0, limitbuf, sizeof(limitbuf), "%u", MB_UINT(mbuf, i));
- for (inv = &(cptr->user->invited); (tmp = *inv); inv = &tmp->next)
- if (tmp->value.chptr == chptr)
- {
- *inv = tmp->next;
- free_link(tmp);
- break;
- }
-}
+ tmp = strlen(limitbuf);
-/* List and skip all channels that are listen */
-void list_next_channels(aClient *cptr, int nr)
-{
- aListingArgs *args = cptr->listing;
- aChannel *chptr = args->chptr;
- chptr->mode.mode &= ~MODE_LISTED;
- while (is_listed(chptr) || --nr >= 0)
- {
- for (; chptr; chptr = chptr->nextch)
- {
- if (!cptr->user || (SecretChannel(chptr) && !IsMember(cptr, chptr)))
- continue;
- if (chptr->users > args->min_users && chptr->users < args->max_users &&
- chptr->creationtime > args->min_time &&
- chptr->creationtime < args->max_time &&
- (!args->topic_limits || (*chptr->topic &&
- chptr->topic_time > args->min_topic_time &&
- chptr->topic_time < args->max_topic_time)))
- {
- sendto_one(cptr, rpl_str(RPL_LIST), me.name, cptr->name,
- ShowChannel(cptr, chptr) ? chptr->chname : "*",
- chptr->users, ShowChannel(cptr, chptr) ? chptr->topic : "");
- chptr = chptr->nextch;
- break;
+ if ((totalbuflen - tmp) <= 0) /* don't overflow buffer */
+ MB_TYPE(mbuf, i) |= MODE_SAVE; /* save for later */
+ else {
+ bufptr[(*bufptr_i)++] = 'l';
+ totalbuflen -= tmp + 1;
}
}
- if (!chptr)
- {
- RunFree(cptr->listing);
- cptr->listing = NULL;
- sendto_one(cptr, rpl_str(RPL_LISTEND), me.name, cptr->name);
- break;
- }
- }
- if (chptr)
- {
- cptr->listing->chptr = chptr;
- chptr->mode.mode |= MODE_LISTED;
}
-}
-/*
- * Subtract one user from channel i (and free channel
- * block, if channel became empty).
- */
-static void sub1_from_channel(aChannel *chptr)
-{
- Reg2 Link *tmp;
- Link *obtmp;
+ /* terminate the mode strings */
+ addbuf[addbuf_i] = '\0';
+ rembuf[rembuf_i] = '\0';
+ addbuf_local[addbuf_local_i] = '\0';
+ rembuf_local[rembuf_local_i] = '\0';
- if (chptr->users > 1) /* Can be 0, called for an empty channel too */
- {
- --chptr->users;
- return;
- }
+ /* If we're building a user visible MODE or HACK... */
+ if (mbuf->mb_dest & (MODEBUF_DEST_CHANNEL | MODEBUF_DEST_HACK2 |
+ MODEBUF_DEST_HACK3 | MODEBUF_DEST_HACK4 |
+ MODEBUF_DEST_LOG)) {
+ /* Set up the parameter strings */
+ addstr[0] = '\0';
+ addstr_i = 0;
+ remstr[0] = '\0';
+ remstr_i = 0;
- /* Channel became (or was) empty: Remove channel */
- if (is_listed(chptr))
- {
- int i;
- for (i = 0; i <= highest_fd; i++)
- {
- aClient *acptr;
- if ((acptr = loc_clients[i]) && acptr->listing &&
- acptr->listing->chptr == chptr)
- {
- list_next_channels(acptr, 1);
- break; /* Only one client can list a channel */
+ for (i = 0; i < mbuf->mb_count; i++) {
+ if (MB_TYPE(mbuf, i) & MODE_SAVE)
+ continue;
+
+ if (MB_TYPE(mbuf, i) & MODE_ADD) { /* adding or removing? */
+ strptr = addstr;
+ strptr_i = &addstr_i;
+ } else {
+ strptr = remstr;
+ strptr_i = &remstr_i;
}
- }
- }
- /*
- * Now, find all invite links from channel structure
- */
- while ((tmp = chptr->invites))
- del_invite(tmp->value.cptr, chptr);
- tmp = chptr->banlist;
- while (tmp)
- {
- obtmp = tmp;
- tmp = tmp->next;
- RunFree(obtmp->value.ban.banstr);
- RunFree(obtmp->value.ban.who);
- free_link(obtmp);
- }
- if (chptr->prevch)
- chptr->prevch->nextch = chptr->nextch;
- else
- channel = chptr->nextch;
- if (chptr->nextch)
- chptr->nextch->prevch = chptr->prevch;
- hRemChannel(chptr);
- --nrof.channels;
- RunFree((char *)chptr);
-}
+ /* deal with clients... */
+ if (MB_TYPE(mbuf, i) & (MODE_CHANOP | MODE_VOICE))
+ build_string(strptr, strptr_i, cli_name(MB_CLIENT(mbuf, i)), 0, ' ');
-/*
- * m_join
- *
- * parv[0] = sender prefix
- * parv[1] = channel
- * parv[2] = channel keys (client), or channel TS (server)
- */
-int m_join(aClient *cptr, aClient *sptr, int parc, char *parv[])
-{
- static char jbuf[BUFSIZE], mbuf[BUFSIZE];
- Reg1 Link *lp;
- Reg3 aChannel *chptr;
- Reg4 char *name, *keysOrTS = NULL;
- int i = 0, zombie = 0, sendcreate = 0;
- unsigned int flags = 0;
- size_t jlen = 0, mlen = 0;
- size_t *buflen;
- char *p = NULL, *bufptr;
-
- if (parc < 2 || *parv[1] == '\0')
- {
- sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS), me.name, parv[0], "JOIN");
- return 0;
- }
+ /* deal with bans... */
+ else if (MB_TYPE(mbuf, i) & MODE_BAN)
+ build_string(strptr, strptr_i, MB_STRING(mbuf, i), 0, ' ');
- for (p = parv[1]; *p; p++) /* find the last "JOIN 0" in the line -Kev */
- if (*p == '0'
- && (*(p + 1) == ',' || *(p + 1) == '\0' || !isIrcCh(*(p + 1))))
- {
- /* If it's a single "0", remember the place; we will start parsing
- the channels after the last 0 in the line -Kev */
- parv[1] = p;
- if (!*(p + 1))
- break;
- p++;
- }
- else
- { /* Step through to the next comma or until the
- end of the line, in an attempt to save CPU
- -Kev */
- while (*p != ',' && *p != '\0')
- p++;
- if (!*p)
- break;
- }
+ /* deal with keys... */
+ else if (MB_TYPE(mbuf, i) & MODE_KEY)
+ build_string(strptr, strptr_i, mbuf->mb_dest & MODEBUF_DEST_NOKEY ?
+ "*" : MB_STRING(mbuf, i), 0, ' ');
- keysOrTS = parv[2]; /* Remember where our keys are or the TS is;
- parv[2] needs to be NULL for the call to
- m_names below -Kev */
- parv[2] = p = NULL;
+ /* deal with invisible passwords */
+ else if (MB_TYPE(mbuf, i) & (MODE_APASS | MODE_UPASS))
+ build_string(strptr, strptr_i, "*", 0, ' ');
- *jbuf = *mbuf = '\0'; /* clear both join and mode buffers -Kev */
- /*
- * Rebuild list of channels joined to be the actual result of the
- * JOIN. Note that "JOIN 0" is the destructive problem.
- */
- for (name = strtoken(&p, parv[1], ","); name; name = strtoken(&p, NULL, ","))
- {
- size_t len;
- if (MyConnect(sptr))
- clean_channelname(name);
- else if (IsLocalChannel(name))
- continue;
- if (*name == '0' && *(name + 1) == '\0')
- {
- /* Remove the user from all his channels -Kev */
- while ((lp = sptr->user->channel))
- {
- chptr = lp->value.chptr;
- if (!is_zombie(sptr, chptr))
- sendto_channel_butserv(chptr, sptr, PartFmt2,
- parv[0], chptr->chname, "Left all channels");
- remove_user_from_channel(sptr, chptr);
- }
- /* Just in case */
- *mbuf = *jbuf = '\0';
- mlen = jlen = 0;
- }
- else
- { /* not a /join 0, so treat it as
- a /join #channel -Kev */
- if (!IsChannelName(name))
- {
- if (MyUser(sptr))
- sendto_one(sptr, err_str(ERR_NOSUCHCHANNEL), me.name, parv[0], name);
+ /*
+ * deal with limit; note we cannot include the limit parameter if we're
+ * removing it
+ */
+ else if ((MB_TYPE(mbuf, i) & (MODE_ADD | MODE_LIMIT)) ==
+ (MODE_ADD | MODE_LIMIT))
+ build_string(strptr, strptr_i, limitbuf, 0, ' ');
+ }
+
+ /* send the messages off to their destination */
+ if (mbuf->mb_dest & MODEBUF_DEST_HACK2)
+ sendto_opmask_butone(0, SNO_HACK2, "HACK(2): %s MODE %s %s%s%s%s%s%s "
+ "[%Tu]",
+ cli_name(feature_bool(FEAT_HIS_SNOTICES) ?
+ mbuf->mb_source : app_source),
+ mbuf->mb_channel->chname,
+ rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
+ addbuf, remstr, addstr,
+ mbuf->mb_channel->creationtime);
+
+ if (mbuf->mb_dest & MODEBUF_DEST_HACK3)
+ sendto_opmask_butone(0, SNO_HACK3, "BOUNCE or HACK(3): %s MODE %s "
+ "%s%s%s%s%s%s [%Tu]",
+ cli_name(feature_bool(FEAT_HIS_SNOTICES) ?
+ mbuf->mb_source : app_source),
+ mbuf->mb_channel->chname, rembuf_i ? "-" : "",
+ rembuf, addbuf_i ? "+" : "", addbuf, remstr, addstr,
+ mbuf->mb_channel->creationtime);
+
+ if (mbuf->mb_dest & MODEBUF_DEST_HACK4)
+ sendto_opmask_butone(0, SNO_HACK4, "HACK(4): %s MODE %s %s%s%s%s%s%s "
+ "[%Tu]",
+ cli_name(feature_bool(FEAT_HIS_SNOTICES) ?
+ mbuf->mb_source : app_source),
+ mbuf->mb_channel->chname,
+ rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
+ addbuf, remstr, addstr,
+ mbuf->mb_channel->creationtime);
+
+ if (mbuf->mb_dest & MODEBUF_DEST_LOG)
+ log_write(LS_OPERMODE, L_INFO, LOG_NOSNOTICE,
+ "%#C OPMODE %H %s%s%s%s%s%s", mbuf->mb_source,
+ mbuf->mb_channel, rembuf_i ? "-" : "", rembuf,
+ addbuf_i ? "+" : "", addbuf, remstr, addstr);
+
+ if (mbuf->mb_dest & MODEBUF_DEST_CHANNEL)
+ sendcmdto_channel_butserv_butone(app_source, CMD_MODE, mbuf->mb_channel, NULL, 0,
+ "%H %s%s%s%s%s%s%s%s", mbuf->mb_channel,
+ rembuf_i || rembuf_local_i ? "-" : "",
+ rembuf, rembuf_local,
+ addbuf_i || addbuf_local_i ? "+" : "",
+ addbuf, addbuf_local,
+ remstr, addstr);
+ }
+
+ /* Now are we supposed to propagate to other servers? */
+ if (mbuf->mb_dest & MODEBUF_DEST_SERVER) {
+ /* set up parameter string */
+ addstr[0] = '\0';
+ addstr_i = 0;
+ remstr[0] = '\0';
+ remstr_i = 0;
+
+ /*
+ * limit is supressed if we're removing it; we have to figure out which
+ * direction is the direction for it to be removed, though...
+ */
+ limitdel |= (mbuf->mb_dest & MODEBUF_DEST_BOUNCE) ? MODE_DEL : MODE_ADD;
+
+ for (i = 0; i < mbuf->mb_count; i++) {
+ if (MB_TYPE(mbuf, i) & MODE_SAVE)
continue;
+
+ if (MB_TYPE(mbuf, i) & MODE_ADD) { /* adding or removing? */
+ strptr = addstr;
+ strptr_i = &addstr_i;
+ } else {
+ strptr = remstr;
+ strptr_i = &remstr_i;
}
- if (MyConnect(sptr))
- {
-#ifdef BADCHAN
- if(bad_channel(name) && !IsAnOper(sptr))
- {
- sendto_one(sptr, err_str(ERR_BADCHANNAME), me.name, parv[0],name);
- continue;
- }
-#endif
+ /* if we're changing oplevels and we know the oplevel, pass it on */
+ if ((MB_TYPE(mbuf, i) & MODE_CHANOP)
+ && MB_OPLEVEL(mbuf, i) < MAXOPLEVEL)
+ *strptr_i += ircd_snprintf(0, strptr + *strptr_i, BUFSIZE - *strptr_i,
+ " %s%s:%d",
+ NumNick(MB_CLIENT(mbuf, i)),
+ MB_OPLEVEL(mbuf, i));
- /*
- * Local client is first to enter previously nonexistant
- * channel so make them (rightfully) the Channel Operator.
- * This looks kind of ugly because we try to avoid calling the strlen()
- */
- if (ChannelExists(name))
- {
- flags = CHFL_DEOPPED;
- sendcreate = 0;
- }
- else if (strlen(name) > CHANNELLEN)
- {
- *(name + CHANNELLEN) = '\0';
- if (ChannelExists(name))
- {
- flags = CHFL_DEOPPED;
- sendcreate = 0;
- }
- else
- {
- flags = IsModelessChannel(name) ? CHFL_DEOPPED : CHFL_CHANOP;
- sendcreate = 1;
- }
- }
- else
- {
- flags = IsModelessChannel(name) ? CHFL_DEOPPED : CHFL_CHANOP;
- sendcreate = 1;
- }
+ /* deal with other modes that take clients */
+ else if (MB_TYPE(mbuf, i) & (MODE_CHANOP | MODE_VOICE))
+ build_string(strptr, strptr_i, NumNick(MB_CLIENT(mbuf, i)), ' ');
+
+ /* deal with modes that take strings */
+ else if (MB_TYPE(mbuf, i) & (MODE_KEY | MODE_BAN | MODE_APASS | MODE_UPASS))
+ build_string(strptr, strptr_i, MB_STRING(mbuf, i), 0, ' ');
- if (sptr->user->joined >= MAXCHANNELSPERUSER)
- {
- chptr = get_channel(sptr, name, !CREATE);
- sendto_one(sptr, err_str(ERR_TOOMANYCHANNELS),
- me.name, parv[0], chptr ? chptr->chname : name);
- break; /* Can't return, else he won't get on ANY
- channels! Break out of the for loop instead.
- -Kev */
- }
- }
- chptr = get_channel(sptr, name, CREATE);
- if (chptr && (lp = find_user_link(chptr->members, sptr)))
- {
- if (lp->flags & CHFL_ZOMBIE)
- {
- zombie = 1;
- flags = lp->flags & (CHFL_DEOPPED | CHFL_SERVOPOK);
- remove_user_from_channel(sptr, chptr);
- chptr = get_channel(sptr, name, CREATE);
- }
- else
- continue;
- }
- name = chptr->chname;
- if (!chptr->creationtime) /* A remote JOIN created this channel ? */
- chptr->creationtime = MAGIC_REMOTE_JOIN_TS;
- if (parc > 2)
- {
- if (chptr->creationtime == MAGIC_REMOTE_JOIN_TS)
- chptr->creationtime = atoi(keysOrTS);
- else
- parc = 2; /* Don't pass it on */
- }
- if (!zombie)
- {
- if (!MyConnect(sptr))
- flags = CHFL_DEOPPED;
- if (sptr->flags & FLAGS_TS8)
- flags |= CHFL_SERVOPOK;
- }
- if (MyConnect(sptr))
- {
- int created = chptr->users == 0;
- if (check_target_limit(sptr, chptr, chptr->chname, created))
- {
- if (created) /* Did we create the channel? */
- sub1_from_channel(chptr); /* Remove it again! */
- continue;
- }
- if ((i = can_join(sptr, chptr, keysOrTS)))
- {
- sendto_one(sptr, err_str(i), me.name, parv[0], chptr->chname);
- continue;
- }
- }
/*
- * Complete user entry to the new channel (if any)
+ * deal with the limit. Logic here is complicated; if HACK2 is set,
+ * we're bouncing the mode, so sense is reversed, and we have to
+ * include the original limit if it looks like it's being removed
*/
- add_user_to_channel(chptr, sptr, flags);
+ else if ((MB_TYPE(mbuf, i) & limitdel) == limitdel)
+ build_string(strptr, strptr_i, limitbuf, 0, ' ');
+ }
+
+ /* we were told to deop the source */
+ if (mbuf->mb_dest & MODEBUF_DEST_DEOP) {
+ addbuf[addbuf_i++] = 'o'; /* remember, sense is reversed */
+ addbuf[addbuf_i] = '\0'; /* terminate the string... */
+ build_string(addstr, &addstr_i, NumNick(mbuf->mb_source), ' ');
+ /* mark that we've done this, so we don't do it again */
+ mbuf->mb_dest &= ~MODEBUF_DEST_DEOP;
+ }
+
+ if (mbuf->mb_dest & MODEBUF_DEST_OPMODE) {
+ /* If OPMODE was set, we're propagating the mode as an OPMODE message */
+ sendcmdto_serv_butone(mbuf->mb_source, CMD_OPMODE, mbuf->mb_connect,
+ "%H %s%s%s%s%s%s", mbuf->mb_channel,
+ rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
+ addbuf, remstr, addstr);
+ } else if (mbuf->mb_dest & MODEBUF_DEST_BOUNCE) {
/*
- * Notify all other users on the new channel
+ * If HACK2 was set, we're bouncing; we send the MODE back to
+ * the connection we got it from with the senses reversed and
+ * the proper TS; origin is us
*/
- sendto_channel_butserv(chptr, sptr, ":%s JOIN :%s", parv[0], name);
-
- if (MyUser(sptr))
- {
- del_invite(sptr, chptr);
- if (chptr->topic[0] != '\0')
- {
- sendto_one(sptr, rpl_str(RPL_TOPIC), me.name,
- parv[0], name, chptr->topic);
- sendto_one(sptr, rpl_str(RPL_TOPICWHOTIME), me.name, parv[0], name,
- chptr->topic_nick, chptr->topic_time);
- }
- parv[1] = name;
- m_names(cptr, sptr, 2, parv);
- }
+ sendcmdto_one(&me, CMD_MODE, mbuf->mb_connect, "%H %s%s%s%s%s%s %Tu",
+ mbuf->mb_channel, addbuf_i ? "-" : "", addbuf,
+ rembuf_i ? "+" : "", rembuf, addstr, remstr,
+ mbuf->mb_channel->creationtime);
+ } else {
+ /*
+ * We're propagating a normal (or HACK3 or HACK4) MODE command
+ * to the rest of the network. We send the actual channel TS.
+ */
+ sendcmdto_serv_butone(mbuf->mb_source, CMD_MODE, mbuf->mb_connect,
+ "%H %s%s%s%s%s%s %Tu", mbuf->mb_channel,
+ rembuf_i ? "-" : "", rembuf, addbuf_i ? "+" : "",
+ addbuf, remstr, addstr,
+ mbuf->mb_channel->creationtime);
}
+ }
+
+ /* We've drained the ModeBuf... */
+ mbuf->mb_add = 0;
+ mbuf->mb_rem = 0;
+ mbuf->mb_count = 0;
+
+ /* reinitialize the mode-with-arg slots */
+ for (i = 0; i < MAXMODEPARAMS; i++) {
+ /* If we saved any, pack them down */
+ if (MB_TYPE(mbuf, i) & MODE_SAVE) {
+ mbuf->mb_modeargs[mbuf->mb_count] = mbuf->mb_modeargs[i];
+ MB_TYPE(mbuf, mbuf->mb_count) &= ~MODE_SAVE; /* don't save anymore */
+
+ if (mbuf->mb_count++ == i) /* don't overwrite our hard work */
+ continue;
+ } else if (MB_TYPE(mbuf, i) & MODE_FREE)
+ MyFree(MB_STRING(mbuf, i)); /* free string if needed */
+
+ MB_TYPE(mbuf, i) = 0;
+ MB_UINT(mbuf, i) = 0;
+ }
+
+ /* If we're supposed to flush it all, do so--all hail tail recursion */
+ if (all && mbuf->mb_count)
+ return modebuf_flush_int(mbuf, 1);
+
+ return 0;
+}
+
+/** Initialise a modebuf
+ * This routine just initializes a ModeBuf structure with the information
+ * needed and the options given.
+ *
+ * @param mbuf The mode buffer to initialise.
+ * @param source The client that is performing the mode.
+ * @param connect ?
+ * @param chan The channel that the mode is being performed upon.
+ * @param dest ?
+ */
+void
+modebuf_init(struct ModeBuf *mbuf, struct Client *source,
+ struct Client *connect, struct Channel *chan, unsigned int dest)
+{
+ int i;
- /* Select proper buffer; mbuf for creation, jbuf otherwise */
+ assert(0 != mbuf);
+ assert(0 != source);
+ assert(0 != chan);
+ assert(0 != dest);
- if (*name == '&')
- continue; /* Head off local channels at the pass */
+ if (IsLocalChannel(chan->chname)) dest &= ~MODEBUF_DEST_SERVER;
- bufptr = (sendcreate == 0) ? jbuf : mbuf;
- buflen = (sendcreate == 0) ? &jlen : &mlen;
- len = strlen(name);
- if (*buflen < BUFSIZE - len - 2)
- {
- if (*bufptr)
- {
- strcat(bufptr, ","); /* Add to join buf */
- *buflen += 1;
- }
- strncat(bufptr, name, BUFSIZE - *buflen - 1);
- *buflen += len;
- }
- sendcreate = 0; /* Reset sendcreate */
+ mbuf->mb_add = 0;
+ mbuf->mb_rem = 0;
+ mbuf->mb_source = source;
+ mbuf->mb_connect = connect;
+ mbuf->mb_channel = chan;
+ mbuf->mb_dest = dest;
+ mbuf->mb_count = 0;
+
+ /* clear each mode-with-parameter slot */
+ for (i = 0; i < MAXMODEPARAMS; i++) {
+ MB_TYPE(mbuf, i) = 0;
+ MB_UINT(mbuf, i) = 0;
}
+}
-#ifndef NO_PROTOCOL9
- if (*jbuf || *mbuf) /* Propagate joins to P09 servers */
- sendto_lowprot_butone(cptr, 9, (*jbuf && *mbuf) ? ":%s JOIN %s,%s" :
- ":%s JOIN %s%s", parv[0], jbuf, mbuf);
-#endif
+/** Append a new mode to a modebuf
+ * This routine simply adds modes to be added or deleted; do a binary OR
+ * with either MODE_ADD or MODE_DEL
+ *
+ * @param mbuf Mode buffer
+ * @param mode MODE_ADD or MODE_DEL OR'd with MODE_PRIVATE etc.
+ */
+void
+modebuf_mode(struct ModeBuf *mbuf, unsigned int mode)
+{
+ assert(0 != mbuf);
+ assert(0 != (mode & (MODE_ADD | MODE_DEL)));
- if (*jbuf) /* Propgate joins to P10 servers */
-#ifdef NO_PROTOCOL9
- sendto_serv_butone(cptr,
- parc > 2 ? ":%s JOIN %s %s" : ":%s JOIN %s", parv[0], jbuf, keysOrTS);
-#else
- sendto_highprot_butone(cptr, 10,
- parc > 2 ? ":%s JOIN %s %s" : ":%s JOIN %s", parv[0], jbuf, keysOrTS);
-#endif
- if (*mbuf) /* and now creation events */
-#ifdef NO_PROTOCOL9
- sendto_serv_butone(cptr, "%s%s CREATE %s " TIME_T_FMT,
- NumNick(sptr), mbuf, TStime());
-#else
- sendto_highprot_butone(cptr, 10, "%s%s CREATE %s " TIME_T_FMT,
- NumNick(sptr), mbuf, TStime());
-#endif
+ mode &= (MODE_ADD | MODE_DEL | MODE_PRIVATE | MODE_SECRET | MODE_MODERATED |
+ MODE_TOPICLIMIT | MODE_INVITEONLY | MODE_NOPRIVMSGS | MODE_REGONLY |
+ MODE_DELJOINS | MODE_WASDELJOINS | MODE_REGISTERED);
- if (MyUser(sptr))
- { /* shouldn't ever set TS for remote JOIN's */
- if (*jbuf)
- { /* check for channels that need TS's */
- p = NULL;
- for (name = strtoken(&p, jbuf, ","); name; name = strtoken(&p, NULL, ","))
- {
- chptr = get_channel(sptr, name, !CREATE);
- if (chptr && chptr->mode.mode & MODE_SENDTS)
- { /* send a TS? */
- sendto_serv_butone(cptr, ":%s MODE %s + " TIME_T_FMT, me.name,
- chptr->chname, chptr->creationtime); /* ok, send TS */
- chptr->mode.mode &= ~MODE_SENDTS; /* reset flag */
- }
- }
- }
+ if (!(mode & ~(MODE_ADD | MODE_DEL))) /* don't add empty modes... */
+ return;
- if (*mbuf)
- { /* ok, send along modes for creation events to P9 */
- p = NULL;
- for (name = strtoken(&p, mbuf, ","); name; name = strtoken(&p, NULL, ","))
- {
- chptr = get_channel(sptr, name, !CREATE);
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s +o %s " TIME_T_FMT,
- me.name, chptr->chname, parv[0], chptr->creationtime);
- }
- }
+ if (mode & MODE_ADD) {
+ mbuf->mb_rem &= ~mode;
+ mbuf->mb_add |= mode;
+ } else {
+ mbuf->mb_add &= ~mode;
+ mbuf->mb_rem |= mode;
}
- return 0;
}
-/*
- * m_destruct
+/** Append a mode that takes an int argument to the modebuf
*
- * parv[0] = sender prefix
- * parv[1] = channel channelname
- * parv[2] = channel time stamp
- *
- * This function does nothing, it does passes DESTRUCT to the other servers.
- * In the future we will start to use this message.
+ * This routine adds a mode to be added or deleted that takes a unsigned
+ * int parameter; mode may *only* be the relevant mode flag ORed with one
+ * of MODE_ADD or MODE_DEL
*
+ * @param mbuf The mode buffer to append to.
+ * @param mode The mode to append.
+ * @param uint The argument to the mode.
*/
-int m_destruct(aClient *cptr, aClient *sptr, int parc, char *parv[])
+void
+modebuf_mode_uint(struct ModeBuf *mbuf, unsigned int mode, unsigned int uint)
{
- time_t chanTS; /* Creation time of the channel */
+ assert(0 != mbuf);
+ assert(0 != (mode & (MODE_ADD | MODE_DEL)));
- if (parc < 3 || *parv[2] == '\0')
- return 0;
+ if (mode == (MODE_LIMIT | MODE_DEL)) {
+ mbuf->mb_rem |= mode;
+ return;
+ }
+ MB_TYPE(mbuf, mbuf->mb_count) = mode;
+ MB_UINT(mbuf, mbuf->mb_count) = uint;
-#ifdef GODMODE
- /* Allow DESTRUCT from user */
- if (MyUser(sptr))
- sptr = &me;
- else
-#endif
+ /* when we've reached the maximal count, flush the buffer */
+ if (++mbuf->mb_count >=
+ (MAXMODEPARAMS - (mbuf->mb_dest & MODEBUF_DEST_DEOP ? 1 : 0)))
+ modebuf_flush_int(mbuf, 0);
+}
- /* sanity checks: Only accept DESTRUCT messages from servers */
- if (!IsServer(sptr))
- return 0;
+/** append a string mode
+ * This routine adds a mode to be added or deleted that takes a string
+ * parameter; mode may *only* be the relevant mode flag ORed with one of
+ * MODE_ADD or MODE_DEL
+ *
+ * @param mbuf The mode buffer to append to.
+ * @param mode The mode to append.
+ * @param string The string parameter to append.
+ * @param free If the string should be free'd later.
+ */
+void
+modebuf_mode_string(struct ModeBuf *mbuf, unsigned int mode, char *string,
+ int free)
+{
+ assert(0 != mbuf);
+ assert(0 != (mode & (MODE_ADD | MODE_DEL)));
- /* Don't pass on DESTRUCT messages for channels that exist */
- if (FindChannel(parv[1]))
- return 0;
+ MB_TYPE(mbuf, mbuf->mb_count) = mode | (free ? MODE_FREE : 0);
+ MB_STRING(mbuf, mbuf->mb_count) = string;
+
+ /* when we've reached the maximal count, flush the buffer */
+ if (++mbuf->mb_count >=
+ (MAXMODEPARAMS - (mbuf->mb_dest & MODEBUF_DEST_DEOP ? 1 : 0)))
+ modebuf_flush_int(mbuf, 0);
+}
+
+/** Append a mode on a client to a modebuf.
+ * This routine adds a mode to be added or deleted that takes a client
+ * parameter; mode may *only* be the relevant mode flag ORed with one of
+ * MODE_ADD or MODE_DEL
+ *
+ * @param mbuf The modebuf to append the mode to.
+ * @param mode The mode to append.
+ * @param client The client argument to append.
+ * @param oplevel The oplevel the user had or will have
+ */
+void
+modebuf_mode_client(struct ModeBuf *mbuf, unsigned int mode,
+ struct Client *client, int oplevel)
+{
+ assert(0 != mbuf);
+ assert(0 != (mode & (MODE_ADD | MODE_DEL)));
- chanTS = atoi(parv[2]);
+ MB_TYPE(mbuf, mbuf->mb_count) = mode;
+ MB_CLIENT(mbuf, mbuf->mb_count) = client;
+ MB_OPLEVEL(mbuf, mbuf->mb_count) = oplevel;
- /* Pass on DESTRUCT message */
- sendto_highprot_butone(cptr, 10, "%s DESTRUCT %s " TIME_T_FMT,
- NumServ(sptr), parv[1], chanTS);
+ /* when we've reached the maximal count, flush the buffer */
+ if (++mbuf->mb_count >=
+ (MAXMODEPARAMS - (mbuf->mb_dest & MODEBUF_DEST_DEOP ? 1 : 0)))
+ modebuf_flush_int(mbuf, 0);
+}
+/** Check a channel for join-delayed members.
+ * @param[in] chan Channel to search.
+ * @return Non-zero if any members are join-delayed; false if none are.
+ */
+static int
+find_delayed_joins(const struct Channel *chan)
+{
+ const struct Membership *memb;
+ for (memb = chan->members; memb; memb = memb->next_member)
+ if (IsDelayedJoin(memb))
+ return 1;
return 0;
}
-/*
- * m_create
+/** The exported binding for modebuf_flush()
*
- * parv[0] = sender prefix
- * parv[1] = channel names
- * parv[2] = channel time stamp
+ * @param mbuf The mode buffer to flush.
+ *
+ * @see modebuf_flush_int()
*/
-int m_create(aClient *cptr, aClient *sptr, int parc, char *parv[])
+int
+modebuf_flush(struct ModeBuf *mbuf)
{
- char cbuf[BUFSIZE]; /* Buffer for list with channels
- that `sptr' really creates */
- time_t chanTS; /* Creation time for all channels
- in the comma seperated list */
- char *p, *name;
- Reg5 aChannel *chptr;
- int badop;
-
- /* sanity checks: Only accept CREATE messages from servers */
- if (!IsServer(cptr) || parc < 3 || *parv[2] == '\0')
- return 0;
+ /* Check if MODE_WASDELJOINS should be set: */
+ /* Must be set if going -D and some clients are hidden */
+ if ((mbuf->mb_rem & MODE_DELJOINS)
+ && !(mbuf->mb_channel->mode.mode & (MODE_DELJOINS | MODE_WASDELJOINS))
+ && find_delayed_joins(mbuf->mb_channel)) {
+ mbuf->mb_channel->mode.mode |= MODE_WASDELJOINS;
+ mbuf->mb_add |= MODE_WASDELJOINS;
+ mbuf->mb_rem &= ~MODE_WASDELJOINS;
+ }
+ /* Must be cleared if +D is set */
+ if ((mbuf->mb_add & MODE_DELJOINS)
+ && ((mbuf->mb_channel->mode.mode & (MODE_WASDELJOINS | MODE_WASDELJOINS))
+ == (MODE_WASDELJOINS | MODE_WASDELJOINS))) {
+ mbuf->mb_channel->mode.mode &= ~MODE_WASDELJOINS;
+ mbuf->mb_add &= ~MODE_WASDELJOINS;
+ mbuf->mb_rem |= MODE_WASDELJOINS;
+ }
+
+ return modebuf_flush_int(mbuf, 1);
+}
- chanTS = atoi(parv[2]);
+/* This extracts the simple modes contained in mbuf
+ *
+ * @param mbuf The mode buffer to extract the modes from.
+ * @param buf The string buffer to write the modes into.
+ */
+void
+modebuf_extract(struct ModeBuf *mbuf, char *buf)
+{
+ static int flags[] = {
+/* MODE_CHANOP, 'o', */
+/* MODE_VOICE, 'v', */
+ MODE_PRIVATE, 'p',
+ MODE_SECRET, 's',
+ MODE_MODERATED, 'm',
+ MODE_TOPICLIMIT, 't',
+ MODE_INVITEONLY, 'i',
+ MODE_NOPRIVMSGS, 'n',
+ MODE_KEY, 'k',
+ MODE_APASS, 'A',
+ MODE_UPASS, 'U',
+ MODE_REGISTERED, 'R',
+/* MODE_BAN, 'b', */
+ MODE_LIMIT, 'l',
+ MODE_REGONLY, 'r',
+ MODE_DELJOINS, 'D',
+ 0x0, 0x0
+ };
+ unsigned int add;
+ int i, bufpos = 0, len;
+ int *flag_p;
+ char *key = 0, limitbuf[20];
+ char *apass = 0, *upass = 0;
- *cbuf = '\0'; /* Start with empty buffer */
+ assert(0 != mbuf);
+ assert(0 != buf);
- /* For each channel in the comma seperated list: */
- for (name = strtoken(&p, parv[1], ","); name; name = strtoken(&p, NULL, ","))
- {
- badop = 0; /* Default is to accept the op */
- if ((chptr = FindChannel(name)))
- {
- name = chptr->chname;
- if (TStime() - chanTS > TS_LAG_TIME)
- {
- /* A bounce would not be accepted anyway - if we get here something
- is wrong with the TS clock syncing (or we have more then
- TS_LAG_TIME lag, or an admin is hacking */
- badop = 2;
- /* This causes a HACK notice on all upstream servers: */
- if (Protocol(cptr) < 10)
- sendto_one(cptr, ":%s MODE %s -o %s 0", me.name, name, sptr->name);
- else
- sendto_one(cptr, ":%s MODE %s -o %s%s 0",
- me.name, name, NumNick(sptr));
- /* This causes a WALLOPS on all downstream servers and a notice to our
- own opers: */
- parv[1] = name; /* Corrupt parv[1], it is not used anymore anyway */
- send_hack_notice(cptr, sptr, parc, parv, badop, 2);
- }
- else if (chptr->creationtime && chanTS > chptr->creationtime &&
- chptr->creationtime != MAGIC_REMOTE_JOIN_TS)
- {
- /* We (try) to bounce the mode, because the CREATE is used on an older
- channel, probably a net.ride */
- badop = 1;
- /* Send a deop upstream: */
- if (Protocol(cptr) < 10)
- sendto_one(cptr, ":%s MODE %s -o %s " TIME_T_FMT, me.name,
- name, sptr->name, chptr->creationtime);
- else
- sendto_one(cptr, ":%s MODE %s -o %s%s " TIME_T_FMT, me.name,
- name, NumNick(sptr), chptr->creationtime);
- }
- }
- else /* Channel doesn't exist: create it */
- chptr = get_channel(sptr, name, CREATE);
+ buf[0] = '\0';
- /* Add and mark ops */
- add_user_to_channel(chptr, sptr,
- (badop || IsModelessChannel(name)) ? CHFL_DEOPPED : CHFL_CHANOP);
+ add = mbuf->mb_add;
- /* Send user join to the local clients (if any) */
- sendto_channel_butserv(chptr, sptr, ":%s JOIN :%s", parv[0], name);
+ for (i = 0; i < mbuf->mb_count; i++) { /* find keys and limits */
+ if (MB_TYPE(mbuf, i) & MODE_ADD) {
+ add |= MB_TYPE(mbuf, i) & (MODE_KEY | MODE_LIMIT | MODE_APASS | MODE_UPASS);
- if (badop) /* handle badop: convert CREATE into JOIN */
- sendto_serv_butone(cptr, ":%s JOIN %s " TIME_T_FMT,
- sptr->name, name, chptr->creationtime);
- else
- {
- /* Send the op to local clients:
- (if any; extremely unlikely, but it CAN happen) */
- if (!IsModelessChannel(name))
- sendto_channel_butserv(chptr, sptr, ":%s MODE %s +o %s",
- sptr->user->server->name, name, parv[0]);
-
- /* Set/correct TS and add the channel to the
- buffer for accepted channels: */
- chptr->creationtime = chanTS;
- if (*cbuf)
- strcat(cbuf, ",");
- strcat(cbuf, name);
+ if (MB_TYPE(mbuf, i) & MODE_KEY) /* keep strings */
+ key = MB_STRING(mbuf, i);
+ else if (MB_TYPE(mbuf, i) & MODE_LIMIT)
+ ircd_snprintf(0, limitbuf, sizeof(limitbuf), "%u", MB_UINT(mbuf, i));
+ else if (MB_TYPE(mbuf, i) & MODE_UPASS)
+ upass = MB_STRING(mbuf, i);
+ else if (MB_TYPE(mbuf, i) & MODE_APASS)
+ apass = MB_STRING(mbuf, i);
}
}
- if (*cbuf) /* Any channel accepted with ops ? */
- {
-#ifdef NO_PROTOCOL9
- sendto_serv_butone(cptr, "%s%s CREATE %s " TIME_T_FMT,
- NumNick(sptr), cbuf, chanTS);
-#else
- /* send CREATEs to 2.10 servers */
- sendto_highprot_butone(cptr, 10, "%s%s CREATE %s " TIME_T_FMT,
- NumNick(sptr), cbuf, chanTS);
-
- /* And JOIN + MODE to 2.9 servers; following
- is not needed after all are 2.10 */
- sendto_lowprot_butone(cptr, 9, ":%s JOIN %s", parv[0], cbuf);
- p = NULL;
- for (name = strtoken(&p, cbuf, ","); name; name = strtoken(&p, NULL, ","))
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s +o %s " TIME_T_FMT,
- sptr->user->server->name, name, parv[0], chanTS);
-#endif
+ if (!add)
+ return;
+
+ buf[bufpos++] = '+'; /* start building buffer */
+
+ for (flag_p = flags; flag_p[0]; flag_p += 2)
+ if (*flag_p & add)
+ buf[bufpos++] = flag_p[1];
+
+ for (i = 0, len = bufpos; i < len; i++) {
+ if (buf[i] == 'k')
+ build_string(buf, &bufpos, key, 0, ' ');
+ else if (buf[i] == 'l')
+ build_string(buf, &bufpos, limitbuf, 0, ' ');
+ else if (buf[i] == 'U')
+ build_string(buf, &bufpos, upass, 0, ' ');
+ else if (buf[i] == 'A')
+ build_string(buf, &bufpos, apass, 0, ' ');
}
- return 0;
+ buf[bufpos] = '\0';
+
+ return;
+}
+
+/** Simple function to invalidate a channel's ban cache.
+ *
+ * This function marks all members of the channel as being neither
+ * banned nor banned.
+ *
+ * @param chan The channel to operate on.
+ */
+void
+mode_ban_invalidate(struct Channel *chan)
+{
+ struct Membership *member;
+
+ for (member = chan->members; member; member = member->next_member)
+ ClearBanValid(member);
}
-static size_t prefix_len;
+/** Simple function to drop invite structures
+ *
+ * Remove all the invites on the channel.
+ *
+ * @param chan Channel to remove invites from.
+ *
+ */
+void
+mode_invite_clear(struct Channel *chan)
+{
+ while (chan->invites)
+ del_invite(chan->invites->value.cptr, chan);
+}
-static void add_token_to_sendbuf(char *token, size_t *sblenp, int *firstp,
- int *send_itp, char is_a_ban, int mode)
+/* What we've done for mode_parse so far... */
+#define DONE_LIMIT 0x01 /**< We've set the limit */
+#define DONE_KEY_ADD 0x02 /**< We've set the key */
+#define DONE_BANLIST 0x04 /**< We've sent the ban list */
+#define DONE_NOTOPER 0x08 /**< We've sent a "Not oper" error */
+#define DONE_BANCLEAN 0x10 /**< We've cleaned bans... */
+#define DONE_UPASS_ADD 0x20 /**< We've set user pass */
+#define DONE_APASS_ADD 0x40 /**< We've set admin pass */
+#define DONE_KEY_DEL 0x80 /**< We've removed the key */
+#define DONE_UPASS_DEL 0x100 /**< We've removed the user pass */
+#define DONE_APASS_DEL 0x200 /**< We've removed the admin pass */
+
+struct ParseState {
+ struct ModeBuf *mbuf;
+ struct Client *cptr;
+ struct Client *sptr;
+ struct Channel *chptr;
+ struct Membership *member;
+ int parc;
+ char **parv;
+ unsigned int flags;
+ unsigned int dir;
+ unsigned int done;
+ unsigned int add;
+ unsigned int del;
+ int args_used;
+ int max_args;
+ int numbans;
+ struct Ban banlist[MAXPARA];
+ struct {
+ unsigned int flag;
+ unsigned short oplevel;
+ struct Client *client;
+ } cli_change[MAXPARA];
+};
+
+/** Helper function to send "Not oper" or "Not member" messages
+ * Here's a helper function to deal with sending along "Not oper" or
+ * "Not member" messages
+ *
+ * @param state Parsing State object
+ */
+static void
+send_notoper(struct ParseState *state)
{
- int first = *firstp;
+ if (state->done & DONE_NOTOPER)
+ return;
- /*
- * Heh - we do not need to test if it still fits in the buffer, because
- * this BURST message is reconstructed from another BURST message, and
- * it only can become smaller. --Run
- */
+ send_reply(state->sptr, (state->flags & MODE_PARSE_NOTOPER) ?
+ ERR_CHANOPRIVSNEEDED : ERR_NOTONCHANNEL, state->chptr->chname);
- if (*firstp) /* First token in this parameter ? */
- {
- *firstp = 0;
- if (*send_itp == 0)
- *send_itp = 1; /* Buffer contains data to be sent */
- sendbuf[(*sblenp)++] = ' ';
- if (is_a_ban)
- {
- sendbuf[(*sblenp)++] = ':'; /* Bans are always the last "parv" */
- sendbuf[(*sblenp)++] = is_a_ban;
+ state->done |= DONE_NOTOPER;
+}
+
+/** Parse a limit
+ * Helper function to convert limits
+ *
+ * @param state Parsing state object.
+ * @param flag_p ?
+ */
+static void
+mode_parse_limit(struct ParseState *state, int *flag_p)
+{
+ unsigned int t_limit;
+
+ if (state->dir == MODE_ADD) { /* convert arg only if adding limit */
+ if (MyUser(state->sptr) && state->max_args <= 0) /* too many args? */
+ return;
+
+ if (state->parc <= 0) { /* warn if not enough args */
+ if (MyUser(state->sptr))
+ need_more_params(state->sptr, "MODE +l");
+ return;
}
+
+ t_limit = strtoul(state->parv[state->args_used++], 0, 10); /* grab arg */
+ state->parc--;
+ state->max_args--;
+
+ if ((int)t_limit<0) /* don't permit a negative limit */
+ return;
+
+ if (!(state->flags & MODE_PARSE_WIPEOUT) &&
+ (!t_limit || t_limit == state->chptr->mode.limit))
+ return;
+ } else
+ t_limit = state->chptr->mode.limit;
+
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
+ return;
}
- else /* Of course, 'send_it' is already set here */
- /* Seperate banmasks with a space because
- they can contain commas themselfs: */
- sendbuf[(*sblenp)++] = is_a_ban ? ' ' : ',';
- strcpy(sendbuf + *sblenp, token);
- *sblenp += strlen(token);
- if (!is_a_ban) /* nick list ? Need to take care
- of modes for nicks: */
- {
- static int last_mode = 0;
- mode &= CHFL_CHANOP | CHFL_VOICE;
- if (first)
- last_mode = 0;
- if (last_mode != mode) /* Append mode like ':ov' if changed */
- {
- last_mode = mode;
- sendbuf[(*sblenp)++] = ':';
- if (mode & CHFL_CHANOP)
- sendbuf[(*sblenp)++] = 'o';
- if (mode & CHFL_VOICE)
- sendbuf[(*sblenp)++] = 'v';
+
+ /* Can't remove a limit that's not there */
+ if (state->dir == MODE_DEL && !state->chptr->mode.limit)
+ return;
+
+ /* Skip if this is a burst and a lower limit than this is set already */
+ if ((state->flags & MODE_PARSE_BURST) &&
+ (state->chptr->mode.mode & flag_p[0]) &&
+ (state->chptr->mode.limit < t_limit))
+ return;
+
+ if (state->done & DONE_LIMIT) /* allow limit to be set only once */
+ return;
+ state->done |= DONE_LIMIT;
+
+ if (!state->mbuf)
+ return;
+
+ modebuf_mode_uint(state->mbuf, state->dir | flag_p[0], t_limit);
+
+ if (state->flags & MODE_PARSE_SET) { /* set the limit */
+ if (state->dir & MODE_ADD) {
+ state->chptr->mode.mode |= flag_p[0];
+ state->chptr->mode.limit = t_limit;
+ } else {
+ state->chptr->mode.mode &= ~flag_p[0];
+ state->chptr->mode.limit = 0;
}
- sendbuf[*sblenp] = '\0';
}
}
-static void cancel_mode(aClient *sptr, aChannel *chptr, char m,
- const char *param, int *count)
+/** Helper function to validate key-like parameters.
+ *
+ * @param[in] state Parse state for feedback to user.
+ * @param[in] s Key to validate.
+ * @param[in] command String to pass for need_more_params() command.
+ * @return Zero on an invalid key, non-zero if the key was okay.
+ */
+static int
+is_clean_key(struct ParseState *state, char *s, char *command)
{
- static char *pb, *sbp, *sbpi;
- int paramdoesntfit = 0;
- if (*count == -1) /* initialize ? */
- {
- sbp = sbpi =
- sprintf_irc(sendbuf, ":%s MODE %s -", sptr->name, chptr->chname);
- pb = parabuf;
- *count = 0;
+ int ii;
+
+ if (s[0] == '\0') {
+ if (MyUser(state->sptr))
+ need_more_params(state->sptr, command);
+ return 0;
}
- /* m == 0 means flush */
- if (m)
- {
- if (param)
- {
- size_t nplen = strlen(param);
- if (pb - parabuf + nplen + 23 > MODEBUFLEN)
- paramdoesntfit = 1;
- else
- {
- *sbp++ = m;
- *pb++ = ' ';
- strcpy(pb, param);
- pb += nplen;
- ++*count;
- }
+ else if (s[0] == ':') {
+ if (MyUser(state->sptr))
+ send_reply(state->sptr, ERR_INVALIDKEY, state->chptr->chname);
+ return 0;
+ }
+ for (ii = 0; (ii <= KEYLEN) && (s[ii] != '\0'); ++ii) {
+ if ((unsigned char)s[ii] <= ' ' || s[ii] == ',') {
+ if (MyUser(state->sptr))
+ send_reply(state->sptr, ERR_INVALIDKEY, state->chptr->chname);
+ return 0;
}
- else
- *sbp++ = m;
}
- else if (*count == 0)
+ if (ii > KEYLEN) {
+ if (MyUser(state->sptr))
+ send_reply(state->sptr, ERR_INVALIDKEY, state->chptr->chname);
+ return 0;
+ }
+ return 1;
+}
+
+/*
+ * Helper function to convert keys
+ */
+static void
+mode_parse_key(struct ParseState *state, int *flag_p)
+{
+ char *t_str;
+
+ if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
+ return;
+
+ if (state->parc <= 0) { /* warn if not enough args */
+ if (MyUser(state->sptr))
+ need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +k" :
+ "MODE -k");
+ return;
+ }
+
+ t_str = state->parv[state->args_used++]; /* grab arg */
+ state->parc--;
+ state->max_args--;
+
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
return;
- if (*count == 6 || !m || paramdoesntfit)
+ }
+
+ /* allow removing and then adding key, but not adding and then removing */
+ if (state->dir == MODE_ADD)
{
-#ifndef NO_PROTOCOL9
- Dlink *lp;
- char *sbe;
-#endif
- Link *member;
- strcpy(sbp, parabuf);
-#ifndef NO_PROTOCOL9
- sbe = sbp + strlen(parabuf);
-#endif
- for (member = chptr->members; member; member = member->next)
- if (MyUser(member->value.cptr))
- sendbufto_one(member->value.cptr);
-#ifndef NO_PROTOCOL9
- sprintf_irc(sbe, " " TIME_T_FMT, chptr->creationtime);
- /* Send 'sendbuf' to all 2.9 downlinks: */
- for (lp = me.serv->down; lp; lp = lp->next)
- if (Protocol(lp->value.cptr) < 10)
- sendbufto_one(lp->value.cptr);
-#endif
- sbp = sbpi;
- pb = parabuf;
- *count = 0;
+ if (state->done & DONE_KEY_ADD)
+ return;
+ state->done |= DONE_KEY_ADD;
}
- if (paramdoesntfit)
+ else
{
- *sbp++ = m;
- *pb++ = ' ';
- strcpy(pb, param);
- pb += strlen(param);
- ++*count;
+ if (state->done & (DONE_KEY_ADD | DONE_KEY_DEL))
+ return;
+ state->done |= DONE_KEY_DEL;
+ }
+
+ /* If the key is invalid, tell the user and bail. */
+ if (!is_clean_key(state, t_str, state->dir == MODE_ADD ? "MODE +k" :
+ "MODE -k"))
+ return;
+
+ if (!state->mbuf)
+ return;
+
+ /* Skip if this is a burst, we have a key already and the new key is
+ * after the old one alphabetically */
+ if ((state->flags & MODE_PARSE_BURST) &&
+ *(state->chptr->mode.key) &&
+ ircd_strcmp(state->chptr->mode.key, t_str) <= 0)
+ return;
+
+ /* can't add a key if one is set, nor can one remove the wrong key */
+ if (!(state->flags & MODE_PARSE_FORCE))
+ if ((state->dir == MODE_ADD && *state->chptr->mode.key) ||
+ (state->dir == MODE_DEL &&
+ ircd_strcmp(state->chptr->mode.key, t_str))) {
+ send_reply(state->sptr, ERR_KEYSET, state->chptr->chname);
+ return;
+ }
+
+ if (!(state->flags & MODE_PARSE_WIPEOUT) && state->dir == MODE_ADD &&
+ !ircd_strcmp(state->chptr->mode.key, t_str))
+ return; /* no key change */
+
+ if (state->flags & MODE_PARSE_BOUNCE) {
+ if (*state->chptr->mode.key) /* reset old key */
+ modebuf_mode_string(state->mbuf, MODE_DEL | flag_p[0],
+ state->chptr->mode.key, 0);
+ else /* remove new bogus key */
+ modebuf_mode_string(state->mbuf, MODE_ADD | flag_p[0], t_str, 0);
+ } else /* send new key */
+ modebuf_mode_string(state->mbuf, state->dir | flag_p[0], t_str, 0);
+
+ if (state->flags & MODE_PARSE_SET) {
+ if (state->dir == MODE_DEL) /* remove the old key */
+ *state->chptr->mode.key = '\0';
+ else
+ ircd_strncpy(state->chptr->mode.key, t_str, KEYLEN);
}
}
/*
- * m_burst -- by Run carlo@runaway.xs4all.nl december 1995 till march 1997
- *
- * parv[0] = sender prefix
- * parv[1] = channel name
- * parv[2] = channel timestamp
- * The meaning of the following parv[]'s depend on their first character:
- * If parv[n] starts with a '+':
- * Net burst, additive modes
- * parv[n] = <mode>
- * parv[n+1] = <param> (optional)
- * parv[n+2] = <param> (optional)
- * If parv[n] starts with a '%', then n will be parc-1:
- * parv[n] = %<ban> <ban> <ban> ...
- * If parv[n] starts with another character:
- * parv[n] = <nick>[:<mode>],<nick>[:<mode>],...
- * where <mode> is the channel mode (ov) of nick and all following nicks.
- *
- * Example:
- * "S BURST #channel 87654321 +ntkl key 123 AAA,AAB:o,BAA,BAB:ov :%ban1 ban2"
- *
- * Anti net.ride code.
- *
- * When the channel already exist, and its TS is larger then
- * the TS in the BURST message, then we cancel all existing modes.
- * If its is smaller then the received BURST message is ignored.
- * If it's equal, then the received modes are just added.
+ * Helper function to convert user passes
*/
-int m_burst(aClient *cptr, aClient *sptr, int parc, char *parv[])
+static void
+mode_parse_upass(struct ParseState *state, int *flag_p)
{
- Reg1 aChannel *chptr;
- time_t timestamp;
- int netride = 0, wipeout = 0, n;
- int send_it = 0, add_banid_not_called = 1;
- Mode *current_mode;
- size_t sblen, mblen = 0;
- int mblen2, pblen2, cnt;
- int prev_mode;
- char prev_key[KEYLEN + 1];
- Link *lp;
-#ifndef NO_PROTOCOL9
- int ts_sent = 0;
-#endif
+ char *t_str;
- /* BURST is only for servers and has at least 4 parameters */
- if (!IsServer(cptr) || parc < 4)
- return 0;
+ if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
+ return;
- if (!IsBurst(sptr))
- {
- int i;
- char *p;
- if (find_conf_host(cptr->confs, sptr->name, CONF_UWORLD))
- {
- p =
- sprintf_irc(sendbuf,
- ":%s NOTICE * :*** Notice -- HACK(4): %s BURST %s %s", me.name,
- sptr->name, parv[1], parv[2]);
- for (i = 3; i < parc - 1; ++i)
- p = sprintf_irc(p, " %s", parv[i]);
- sprintf_irc(p, " :%s", parv[parc - 1]);
- sendbufto_op_mask(SNO_HACK4);
- }
- else
- {
-#if 1 /* FIXME: This should be removed after all HUBs upgraded to ircu2.10.05 */
- SetBurst(sptr);
- if (MyConnect(sptr))
-#endif
- return exit_client_msg(cptr, cptr, &me,
- "HACK: BURST message outside net.burst from %s", sptr->name);
- }
+ if (state->parc <= 0) { /* warn if not enough args */
+ if (MyUser(state->sptr))
+ need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +U" :
+ "MODE -U");
+ return;
}
- /* Find the channel, or create it - note that the creation time
- * will be 0 if it has to be created */
- chptr = get_channel(sptr, parv[1], CREATE);
- current_mode = &chptr->mode;
- prev_mode = chptr->mode.mode;
- if (*chptr->mode.key)
- {
- prev_mode |= MODE_KEY;
- strcpy(prev_key, chptr->mode.key);
+ t_str = state->parv[state->args_used++]; /* grab arg */
+ state->parc--;
+ state->max_args--;
+
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
+ return;
+ }
+
+ /* If a non-service user is trying to force it, refuse. */
+ if (state->flags & MODE_PARSE_FORCE && MyUser(state->sptr)
+ && !HasPriv(state->sptr, PRIV_APASS_OPMODE)) {
+ send_reply(state->sptr, ERR_NOTMANAGER, state->chptr->chname,
+ state->chptr->chname);
+ return;
}
- if (chptr->mode.limit)
- prev_mode |= MODE_LIMIT;
- timestamp = atoi(parv[2]);
+ /* If they are not the channel manager, they are not allowed to change it */
+ if (MyUser(state->sptr) && !(state->flags & MODE_PARSE_FORCE || IsChannelManager(state->member))) {
+ if (*state->chptr->mode.apass) {
+ send_reply(state->sptr, ERR_NOTMANAGER, state->chptr->chname,
+ state->chptr->chname);
+ } else {
+ send_reply(state->sptr, ERR_NOMANAGER, state->chptr->chname,
+ (TStime() - state->chptr->creationtime < 172800) ?
+ "approximately 4-5 minutes" : "approximately 48 hours");
+ }
+ return;
+ }
- /* Copy the new TS when the received creationtime appears to be older */
- if (!chptr->creationtime || chptr->creationtime > timestamp)
+ /* allow removing and then adding upass, but not adding and then removing */
+ if (state->dir == MODE_ADD)
{
- /* Set the new timestamp */
- chptr->creationtime = timestamp;
- send_it = 1; /* Make sure we pass on the different timestamp ! */
- /* Mark all bans as needed to be wiped out */
- for (lp = chptr->banlist; lp; lp = lp->next)
- lp->flags |= CHFL_BURST_BAN_WIPEOUT;
- /*
- * Only the first BURST for this channel can have creationtime > timestamp,
- * so at this moment ALL members are on OUR side, and thus all net.riders:
- */
- wipeout = 1;
+ if (state->done & DONE_UPASS_ADD)
+ return;
+ state->done |= DONE_UPASS_ADD;
}
- for (lp = chptr->members; lp; lp = lp->next)
- lp->flags &= ~CHFL_BURST_JOINED; /* Set later for nicks in the BURST msg */
- /* If `wipeout' is set then these will be deopped later. */
-
- /* If the entering creationtime is younger, ignore the modes */
- if (chptr->creationtime < timestamp)
- netride = 1; /* Only pass on the nicks (so they JOIN) */
-
- /* Prepare buffers to pass the message */
- *bparambuf = *bmodebuf = *parabuf = '\0';
- pblen2 = 0;
- *modebuf = '+';
- mblen2 = 1;
- cnt = 0;
- prefix_len = sblen = sprintf_irc(sendbuf, "%s BURST %s " TIME_T_FMT,
- NumServ(sptr), chptr->chname, chptr->creationtime) - sendbuf;
-
- /* Run over all remaining parameters */
- for (n = 3; n < parc; n++)
- switch (*parv[n]) /* What type is it ? mode, nicks or bans ? */
- {
- case '+': /* modes */
- {
- char *p = parv[n];
- while (*(++p)) /* Run over all mode characters */
- {
- switch (*p) /* which mode ? */
- {
- /*
- * The following cases all do the following:
- * - In case wipeout needed, reset 'prev_mode' to indicate this
- * mode should not be cancelled.
- * - If wipeout or (not netride and the new mode is a change),
- * add it to bmodebuf and bparabuf for propagation.
- * - Else ignore it.
- * - Add it to modebuf and parabuf for propagation to the
- * clients when not netride and the new mode is a change.
- * Special cases:
- * - If a +s is received, cancel a +p and sent a -p to the
- * clients too (if +p was set).
- * - If a +p is received and +s is set, ignore the +p.
- */
- case 'i':
- {
- register int tmp;
- prev_mode &= ~MODE_INVITEONLY;
- if (!(tmp = netride ||
- (current_mode->mode & MODE_INVITEONLY)) || wipeout)
- {
- bmodebuf[mblen++] = 'i';
- current_mode->mode |= MODE_INVITEONLY;
- }
- if (!tmp)
- modebuf[mblen2++] = 'i';
- break;
- }
- case 'k':
- {
- register int tmp;
- char *param = parv[++n];
- prev_mode &= ~MODE_KEY;
- if (!(tmp = netride || (*current_mode->key &&
- (!strcmp(current_mode->key, param) ||
- (!wipeout && strcmp(current_mode->key, param) < 0)))) ||
- wipeout)
- {
- bmodebuf[mblen++] = 'k';
- strcat(bparambuf, " ");
- strcat(bparambuf, param);
- strncpy(current_mode->key, param, KEYLEN);
- }
- if (!tmp && !wipeout)
- {
- modebuf[mblen2++] = 'k';
- parabuf[pblen2++] = ' ';
- strcpy(parabuf + pblen2, param);
- pblen2 += strlen(param);
- cnt++;
- }
- break;
- }
- case 'l':
- {
- register int tmp;
- unsigned int param = atoi(parv[++n]);
- prev_mode &= ~MODE_LIMIT;
- if (!(tmp = netride || (current_mode->limit &&
- (current_mode->limit == param ||
- (!wipeout && current_mode->limit < param)))) || wipeout)
- {
- bmodebuf[mblen++] = 'l';
- sprintf_irc(bparambuf + strlen(bparambuf), " %d", param);
- current_mode->limit = param;
- }
- if (!tmp)
- {
- modebuf[mblen2++] = 'l';
- pblen2 = sprintf_irc(parabuf + pblen2, " %d", param) - parabuf;
- cnt++;
- }
- break;
- }
- case 'm':
- {
- register int tmp;
- prev_mode &= ~MODE_MODERATED;
- if (!(tmp = netride ||
- (current_mode->mode & MODE_MODERATED)) || wipeout)
- {
- bmodebuf[mblen++] = 'm';
- current_mode->mode |= MODE_MODERATED;
- }
- if (!tmp)
- modebuf[mblen2++] = 'm';
- break;
- }
- case 'n':
- {
- register int tmp;
- prev_mode &= ~MODE_NOPRIVMSGS;
- if (!(tmp = netride ||
- (current_mode->mode & MODE_NOPRIVMSGS)) || wipeout)
- {
- bmodebuf[mblen++] = 'n';
- current_mode->mode |= MODE_NOPRIVMSGS;
- }
- if (!tmp)
- modebuf[mblen2++] = 'n';
- break;
- }
- case 'p':
- {
- register int tmp;
-
- /* Special case: */
- if (!netride && !wipeout && (current_mode->mode & MODE_SECRET))
- break;
-
- prev_mode &= ~MODE_PRIVATE;
- if (!(tmp = netride ||
- (current_mode->mode & MODE_PRIVATE)) || wipeout)
- {
- bmodebuf[mblen++] = 'p';
- current_mode->mode |= MODE_PRIVATE;
- }
- if (!tmp)
- modebuf[mblen2++] = 'p';
- break;
- }
- case 's':
- {
- register int tmp;
- prev_mode &= ~MODE_SECRET;
- if (!(tmp = netride ||
- (current_mode->mode & MODE_SECRET)) || wipeout)
- {
- bmodebuf[mblen++] = 's';
- current_mode->mode |= MODE_SECRET;
- }
- if (!tmp)
- modebuf[mblen2++] = 's';
-
- /* Special case: */
- if (!netride && !wipeout && (current_mode->mode & MODE_PRIVATE))
- {
- int i;
- for (i = mblen2 - 1; i >= 0; --i)
- modebuf[i + 2] = modebuf[i];
- modebuf[0] = '-';
- modebuf[1] = 'p';
- mblen2 += 2;
- current_mode->mode &= ~MODE_PRIVATE;
- }
-
- break;
- }
- case 't':
- {
- register int tmp;
- prev_mode &= ~MODE_TOPICLIMIT;
- if (!(tmp = netride ||
- (current_mode->mode & MODE_TOPICLIMIT)) || wipeout)
- {
- bmodebuf[mblen++] = 't';
- current_mode->mode |= MODE_TOPICLIMIT;
- }
- if (!tmp)
- modebuf[mblen2++] = 't';
- break;
- }
- }
- } /* <-- while over all modes */
-
- bmodebuf[mblen] = '\0';
- sendbuf[sblen] = '\0';
- if (mblen) /* Anything to send at all ? */
- {
- send_it = 1;
- strcpy(sendbuf + sblen, " +");
- sblen += 2;
- strcpy(sendbuf + sblen, bmodebuf);
- sblen += mblen;
- strcpy(sendbuf + sblen, bparambuf);
- sblen += strlen(bparambuf);
- }
- break; /* Done mode part */
- }
- case '%': /* bans */
- {
- char *pv, *p = NULL, *ban;
- int first = 1;
- if (netride)
- break; /* Ignore bans */
- /* Run over all bans */
- for (pv = parv[n] + 1; (ban = strtoken(&p, pv, " ")); pv = NULL)
- {
- int ret;
- /*
- * The following part should do the following:
- * - If the new (un)ban is not a _change_ it is ignored.
- * - Else, add it to sendbuf for later use.
- * - If sendbuf is full, send it, and prepare a new
- * message in sendbuf.
- */
- ret = add_banid(sptr, chptr, ban, 1, add_banid_not_called);
- if (ret == 0)
- {
- add_banid_not_called = 0;
- /* Mark this new ban so we can send it to the clients later */
- chptr->banlist->flags |= CHFL_BURST_BAN;
- }
- if (ret != -1)
- /* A new ban was added or an existing one needs to be passed on.
- * Also add it to sendbuf: */
- add_token_to_sendbuf(ban, &sblen, &first, &send_it, '%', 0);
- }
- break; /* Done bans part */
- }
- default: /* nicks */
- {
- char *pv, *p = NULL, *nick, *ptr;
- int first = 1;
- /* Default mode: */
- int default_mode = CHFL_DEOPPED;
- /* Run over all nicks */
- for (pv = parv[n]; (nick = strtoken(&p, pv, ",")); pv = NULL)
- {
- aClient *acptr;
- if ((ptr = strchr(nick, ':'))) /* New default mode ? */
- {
- *ptr = '\0'; /* Fix 'nick' */
- acptr = findNUser(nick);
- if (!netride)
- {
- /* Calculate new mode change: */
- default_mode = CHFL_DEOPPED;
- while (*(++ptr))
- if (*ptr == 'o')
- {
- default_mode |= CHFL_CHANOP;
- default_mode &= ~CHFL_DEOPPED;
- }
- else if (*ptr == 'v')
- default_mode |= CHFL_VOICE;
- else
- break;
- }
- }
- else
- acptr = findNUser(nick);
- /*
- * Note that at this point we already received a 'NICK' for any
- * <nick> numeric that is joining (and possibly opped) here.
- * Therefore we consider the following situations:
- * - The <nick> numeric exists and is from the direction of cptr: ok
- * - The <nick> numeric does not exist:
- * Apparently this previous <nick> numeric was killed (upstream)
- * or it collided with an existing <nick> name.
- * - The <nick> numeric exists but is from another direction:
- * Apparently this previous <nick> numeric was killed,
- * and due to a reroute it signed on via another link (probably
- * a nick [numeric] collision).
- * Note that it can't be a QUIT or SQUIT, because a QUIT would
- * come from the same direction as the BURST (cptr) while an
- * upstream SQUIT removes the source (server) and we would thus
- * have this BURST ignored already.
- * This means that if we find the nick and it is from the correct
- * direction, it joins. If it doesn't exist or is from another
- * direction, we have to ignore it. If all nicks are ignored, we
- * remove the channel again when it is empty and don't propagate
- * the BURST message.
- */
- if (acptr && acptr->from == cptr)
- {
- /*
- * The following should do the following:
- * - Add it to sendbuf for later use.
- * - If sendbuf is full, send it, and prepare a new
- * message in sendbuf.
- */
- add_token_to_sendbuf(nick, &sblen, &first, &send_it, 0,
- default_mode);
- /* Let is take effect: (Note that in the case of a netride
- * 'default_mode' is always CHFL_DEOPPED here). */
- add_user_to_channel(chptr, acptr, default_mode);
- chptr->members->flags |= CHFL_BURST_JOINED;
- }
- } /* <-- Next nick */
- if (!chptr->members) /* All nicks collided and channel is empty ? */
- {
- sub1_from_channel(chptr);
- return 0; /* Forget about the (rest of the) message... */
- }
- break; /* Done nicks part */
- }
- } /* <-- Next parameter if any */
- if (!chptr->members) /* This message only contained bans (then the previous
- message only contained collided nicks, see above) */
+ else
{
- sub1_from_channel(chptr);
- if (!add_banid_not_called)
- while (next_removed_overlapped_ban());
- return 0; /* Forget about the (rest of the) message... */
+ if (state->done & (DONE_UPASS_ADD | DONE_UPASS_DEL))
+ return;
+ state->done |= DONE_UPASS_DEL;
+ }
+
+ /* If the Upass is invalid, tell the user and bail. */
+ if (!is_clean_key(state, t_str, state->dir == MODE_ADD ? "MODE +U" :
+ "MODE -U"))
+ return;
+
+ if (!state->mbuf)
+ return;
+
+ if (!(state->flags & MODE_PARSE_FORCE)) {
+ /* can't add the upass while apass is not set */
+ if (state->dir == MODE_ADD && !*state->chptr->mode.apass) {
+ send_reply(state->sptr, ERR_UPASSNOTSET, state->chptr->chname, state->chptr->chname);
+ return;
+ }
+ /* cannot set a +U password that is the same as +A */
+ if (state->dir == MODE_ADD && !ircd_strcmp(state->chptr->mode.apass, t_str)) {
+ send_reply(state->sptr, ERR_UPASS_SAME_APASS, state->chptr->chname);
+ return;
+ }
+ /* can't add a upass if one is set, nor can one remove the wrong upass */
+ if ((state->dir == MODE_ADD && *state->chptr->mode.upass) ||
+ (state->dir == MODE_DEL &&
+ ircd_strcmp(state->chptr->mode.upass, t_str))) {
+ send_reply(state->sptr, ERR_KEYSET, state->chptr->chname);
+ return;
+ }
}
- /* The last (possibly only) message is always send here */
- if (send_it) /* Anything (left) to send ? */
- {
- Dlink *lp;
- Link *member;
+ if (!(state->flags & MODE_PARSE_WIPEOUT) && state->dir == MODE_ADD &&
+ !ircd_strcmp(state->chptr->mode.upass, t_str))
+ return; /* no upass change */
- /* send 'sendbuf' to all downlinks */
- for (lp = me.serv->down; lp; lp = lp->next)
- {
- if (lp->value.cptr == cptr)
- continue;
- if (Protocol(lp->value.cptr) > 9)
- sendbufto_one(lp->value.cptr);
- }
+ /* Skip if this is a burst, we have a Upass already and the new Upass is
+ * after the old one alphabetically */
+ if ((state->flags & MODE_PARSE_BURST) &&
+ *(state->chptr->mode.upass) &&
+ ircd_strcmp(state->chptr->mode.upass, t_str) <= 0)
+ return;
- /*
- * Now we finally can screw sendbuf again...
- * Send all changes to the local clients:
- *
- * First send all joins and op them, because 2.9 servers
- * would protest with a HACK if we first de-opped people.
- * However, we don't send the +b bans yes, because we
- * DO first want to -b the old bans (otherwise it's confusing).
- */
+ if (state->flags & MODE_PARSE_BOUNCE) {
+ if (*state->chptr->mode.upass) /* reset old upass */
+ modebuf_mode_string(state->mbuf, MODE_DEL | flag_p[0],
+ state->chptr->mode.upass, 0);
+ else /* remove new bogus upass */
+ modebuf_mode_string(state->mbuf, MODE_ADD | flag_p[0], t_str, 0);
+ } else /* send new upass */
+ modebuf_mode_string(state->mbuf, state->dir | flag_p[0], t_str, 0);
+
+ if (state->flags & MODE_PARSE_SET) {
+ if (state->dir == MODE_DEL) /* remove the old upass */
+ *state->chptr->mode.upass = '\0';
+ else
+ ircd_strncpy(state->chptr->mode.upass, t_str, KEYLEN);
+ }
+}
- /* Send all joins: */
- for (member = chptr->members; member; member = member->next)
- if (member->flags & CHFL_BURST_JOINED)
- {
- sendto_channel_butserv(chptr, member->value.cptr, ":%s JOIN :%s",
- member->value.cptr->name, chptr->chname);
-#ifndef NO_PROTOCOL9
- /* And to 2.9 servers: */
- sendto_lowprot_butone(cptr, 9, ":%s JOIN %s",
- member->value.cptr->name, chptr->chname);
-#endif
- }
+/*
+ * Helper function to convert admin passes
+ */
+static void
+mode_parse_apass(struct ParseState *state, int *flag_p)
+{
+ struct Membership *memb;
+ char *t_str;
- if (!netride)
- {
- /* Send all +o and +v modes: */
- for (member = chptr->members; member; member = member->next)
- {
- if ((member->flags & CHFL_BURST_JOINED))
- {
- int mode = CHFL_CHANOP;
- for (;;)
- {
- if ((member->flags & mode))
- {
- modebuf[mblen2++] = (mode == CHFL_CHANOP) ? 'o' : 'v';
- parabuf[pblen2++] = ' ';
- strcpy(parabuf + pblen2, member->value.cptr->name);
- pblen2 += strlen(member->value.cptr->name);
- if (6 == ++cnt)
- {
- modebuf[mblen2] = 0;
- sendto_channel_butserv(chptr, sptr, ":%s MODE %s %s%s",
- parv[0], chptr->chname, modebuf, parabuf);
-#ifndef NO_PROTOCOL9
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s %s%s " TIME_T_FMT,
- parv[0], chptr->chname, modebuf, parabuf,
- chptr->creationtime);
- ts_sent = 1;
-#endif
- *parabuf = 0;
- pblen2 = 0;
- mblen2 = 1;
- cnt = 0;
- }
- }
- if (mode == CHFL_CHANOP)
- mode = CHFL_VOICE;
- else
- break;
- }
- }
+ if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
+ return;
+
+ if (state->parc <= 0) { /* warn if not enough args */
+ if (MyUser(state->sptr))
+ need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +A" :
+ "MODE -A");
+ return;
+ }
+
+ t_str = state->parv[state->args_used++]; /* grab arg */
+ state->parc--;
+ state->max_args--;
+
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
+ return;
+ }
+
+ if (MyUser(state->sptr)) {
+ if (state->flags & MODE_PARSE_FORCE) {
+ /* If an unprivileged oper is trying to force it, refuse. */
+ if (!HasPriv(state->sptr, PRIV_APASS_OPMODE)) {
+ send_reply(state->sptr, ERR_NOTMANAGER, state->chptr->chname,
+ state->chptr->chname);
+ return;
+ }
+ } else {
+ /* If they are not the channel manager, they are not allowed to change it. */
+ if (!IsChannelManager(state->member)) {
+ if (*state->chptr->mode.apass) {
+ send_reply(state->sptr, ERR_NOTMANAGER, state->chptr->chname,
+ state->chptr->chname);
+ } else {
+ send_reply(state->sptr, ERR_NOMANAGER, state->chptr->chname,
+ (TStime() - state->chptr->creationtime < 172800) ?
+ "approximately 4-5 minutes" : "approximately 48 hours");
+ }
+ return;
}
- /* Flush MODEs: */
- if (cnt > 0 || mblen2 > 1)
- {
- modebuf[mblen2] = 0;
- sendto_channel_butserv(chptr, sptr, ":%s MODE %s %s%s",
- parv[0], chptr->chname, modebuf, parabuf);
-#ifndef NO_PROTOCOL9
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s %s%s " TIME_T_FMT,
- parv[0], chptr->chname, modebuf, parabuf, chptr->creationtime);
- ts_sent = 1;
-#endif
+ /* Can't remove the Apass while Upass is still set. */
+ if (state->dir == MODE_DEL && *state->chptr->mode.upass) {
+ send_reply(state->sptr, ERR_UPASSSET, state->chptr->chname, state->chptr->chname);
+ return;
}
-#ifndef NO_PROTOCOL9
- else if (send_it && !ts_sent)
- {
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s + " TIME_T_FMT,
- parv[0], chptr->chname, chptr->creationtime);
- ts_sent = 1;
+ /* Can't add an Apass if one is set, nor can one remove the wrong Apass. */
+ if ((state->dir == MODE_ADD && *state->chptr->mode.apass) ||
+ (state->dir == MODE_DEL && ircd_strcmp(state->chptr->mode.apass, t_str))) {
+ send_reply(state->sptr, ERR_KEYSET, state->chptr->chname);
+ return;
}
-#endif
+ }
+
+ /* Forbid removing the Apass if the channel is older than 48 hours
+ * unless an oper is doing it. */
+ if (TStime() - state->chptr->creationtime >= 172800
+ && state->dir == MODE_DEL
+ && !IsAnOper(state->sptr)) {
+ send_reply(state->sptr, ERR_CHANSECURED, state->chptr->chname);
+ return;
}
}
- if (wipeout)
+ /* allow removing and then adding apass, but not adding and then removing */
+ if (state->dir == MODE_ADD)
{
- Link *lp;
- Link **ban;
- int mode;
- char m;
- int count = -1;
-
- /* Now cancel all previous simple modes */
- if ((prev_mode & MODE_SECRET))
- cancel_mode(sptr, chptr, 's', NULL, &count);
- if ((prev_mode & MODE_PRIVATE))
- cancel_mode(sptr, chptr, 'p', NULL, &count);
- if ((prev_mode & MODE_MODERATED))
- cancel_mode(sptr, chptr, 'm', NULL, &count);
- if ((prev_mode & MODE_TOPICLIMIT))
- cancel_mode(sptr, chptr, 't', NULL, &count);
- if ((prev_mode & MODE_INVITEONLY))
- cancel_mode(sptr, chptr, 'i', NULL, &count);
- if ((prev_mode & MODE_NOPRIVMSGS))
- cancel_mode(sptr, chptr, 'n', NULL, &count);
- if ((prev_mode & MODE_LIMIT))
- {
- current_mode->limit = 0;
- cancel_mode(sptr, chptr, 'l', NULL, &count);
- }
- if ((prev_mode & MODE_KEY))
- {
- *current_mode->key = 0;
- cancel_mode(sptr, chptr, 'k', prev_key, &count);
- }
- current_mode->mode &= ~prev_mode;
+ if (state->done & DONE_APASS_ADD)
+ return;
+ state->done |= DONE_APASS_ADD;
+ }
+ else
+ {
+ if (state->done & (DONE_APASS_ADD | DONE_APASS_DEL))
+ return;
+ state->done |= DONE_APASS_DEL;
+ }
- /* And deop and devoice all net.riders on my side */
- mode = CHFL_CHANOP;
- m = 'o';
- for (;;)
- {
- for (lp = chptr->members; lp; lp = lp->next)
- {
- if ((lp->flags & CHFL_BURST_JOINED))
- continue; /* This is not a net.rider from
- this side of the net.junction */
- if ((lp->flags & mode))
- {
- lp->flags &= ~mode;
- if (mode == CHFL_CHANOP)
- lp->flags |= CHFL_DEOPPED;
- cancel_mode(sptr, chptr, m, lp->value.cptr->name, &count);
- }
- }
- if (mode == CHFL_VOICE)
- break;
- mode = CHFL_VOICE;
- m = 'v';
- }
+ /* If the Apass is invalid, tell the user and bail. */
+ if (!is_clean_key(state, t_str, state->dir == MODE_ADD ? "MODE +A" :
+ "MODE -A"))
+ return;
- /* And finally wipeout all bans that are left */
- for (ban = &chptr->banlist; *ban;)
- {
- Link *tmp = *ban;
- if ((tmp->flags & CHFL_BURST_BAN_WIPEOUT))
- {
- cancel_mode(sptr, chptr, 'b', tmp->value.ban.banstr, &count);
- /* Copied from del_banid(): */
- *ban = tmp->next;
- RunFree(tmp->value.ban.banstr);
- RunFree(tmp->value.ban.who);
- free_link(tmp);
- /* Erase ban-valid-bit, for channel members that are banned */
- for (tmp = chptr->members; tmp; tmp = tmp->next)
- if ((tmp->flags & (CHFL_BANNED | CHFL_BANVALID)) ==
- (CHFL_BANNED | CHFL_BANVALID))
- tmp->flags &= ~CHFL_BANVALID; /* `tmp' == channel member */
+ if (!state->mbuf)
+ return;
+
+ if (!(state->flags & MODE_PARSE_WIPEOUT) && state->dir == MODE_ADD &&
+ !ircd_strcmp(state->chptr->mode.apass, t_str))
+ return; /* no apass change */
+
+ /* Skip if this is a burst, we have an Apass already and the new Apass is
+ * after the old one alphabetically */
+ if ((state->flags & MODE_PARSE_BURST) &&
+ *(state->chptr->mode.apass) &&
+ ircd_strcmp(state->chptr->mode.apass, t_str) <= 0)
+ return;
+
+ if (state->flags & MODE_PARSE_BOUNCE) {
+ if (*state->chptr->mode.apass) /* reset old apass */
+ modebuf_mode_string(state->mbuf, MODE_DEL | flag_p[0],
+ state->chptr->mode.apass, 0);
+ else /* remove new bogus apass */
+ modebuf_mode_string(state->mbuf, MODE_ADD | flag_p[0], t_str, 0);
+ } else /* send new apass */
+ modebuf_mode_string(state->mbuf, state->dir | flag_p[0], t_str, 0);
+
+ if (state->flags & MODE_PARSE_SET) {
+ if (state->dir == MODE_ADD) { /* set the new apass */
+ /* Only accept the new apass if there is no current apass or
+ * this is a BURST. */
+ if (state->chptr->mode.apass[0] == '\0' ||
+ (state->flags & MODE_PARSE_BURST))
+ ircd_strncpy(state->chptr->mode.apass, t_str, KEYLEN);
+ /* Make it VERY clear to the user that this is a one-time password */
+ if (MyUser(state->sptr)) {
+ send_reply(state->sptr, RPL_APASSWARN_SET, state->chptr->mode.apass);
+ send_reply(state->sptr, RPL_APASSWARN_SECRET, state->chptr->chname,
+ state->chptr->mode.apass);
+ }
+ /* Give the channel manager level 0 ops.
+ There should not be tested for IsChannelManager here because
+ on the local server it is impossible to set the apass if one
+ isn't a channel manager and remote servers might need to sync
+ the oplevel here: when someone creates a channel (and becomes
+ channel manager) during a net.break, and only sets the Apass
+ after the net rejoined, they will have oplevel MAXOPLEVEL on
+ all remote servers. */
+ if (state->member)
+ SetOpLevel(state->member, 0);
+ } else { /* remove the old apass */
+ *state->chptr->mode.apass = '\0';
+ /* Clear Upass so that there is never a Upass set when a zannel is burst. */
+ *state->chptr->mode.upass = '\0';
+ if (MyUser(state->sptr))
+ send_reply(state->sptr, RPL_APASSWARN_CLEAR);
+ /* Revert everyone to MAXOPLEVEL. */
+ for (memb = state->chptr->members; memb; memb = memb->next_member) {
+ if (memb->status & MODE_CHANOP)
+ SetOpLevel(memb, MAXOPLEVEL);
}
- else
- ban = &tmp->next;
- }
- /* Also wipeout overlapped bans */
- if (!add_banid_not_called)
- {
- Link *ban;
- while ((ban = next_removed_overlapped_ban()))
- cancel_mode(sptr, chptr, 'b', ban->value.ban.banstr, &count);
}
- cancel_mode(sptr, chptr, 0, NULL, &count); /* flush */
}
+}
- if (send_it && !netride)
- {
- Link *bl;
- int deban;
+/** Compare one ban's extent to another.
+ * This works very similarly to mmatch() but it knows about CIDR masks
+ * and ban exceptions. If both bans are CIDR-based, compare their
+ * address bits; otherwise, use mmatch().
+ * @param[in] old_ban One ban.
+ * @param[in] new_ban Another ban.
+ * @return Zero if \a old_ban is a superset of \a new_ban, non-zero otherwise.
+ */
+static int
+bmatch(struct Ban *old_ban, struct Ban *new_ban)
+{
+ int res;
+ assert(old_ban != NULL);
+ assert(new_ban != NULL);
+ /* A ban is never treated as a superset of an exception. */
+ if (!(old_ban->flags & BAN_EXCEPTION)
+ && (new_ban->flags & BAN_EXCEPTION))
+ return 1;
+ /* If either is not an address mask, match the text masks. */
+ if ((old_ban->flags & new_ban->flags & BAN_IPMASK) == 0)
+ return mmatch(old_ban->banstr, new_ban->banstr);
+ /* If the old ban has a longer prefix than new, it cannot be a superset. */
+ if (old_ban->addrbits > new_ban->addrbits)
+ return 1;
+ /* Compare the masks before the hostname part. */
+ old_ban->banstr[old_ban->nu_len] = new_ban->banstr[new_ban->nu_len] = '\0';
+ res = mmatch(old_ban->banstr, new_ban->banstr);
+ old_ban->banstr[old_ban->nu_len] = new_ban->banstr[new_ban->nu_len] = '@';
+ if (res)
+ return res;
+ /* If the old ban's mask mismatches, cannot be a superset. */
+ if (!ipmask_check(&new_ban->address, &old_ban->address, old_ban->addrbits))
+ return 1;
+ /* Otherwise it depends on whether the old ban's text is a superset
+ * of the new. */
+ return mmatch(old_ban->banstr, new_ban->banstr);
+}
- if (add_banid_not_called || !(bl = next_removed_overlapped_ban()))
- {
- deban = 0;
- bl = chptr->banlist;
- *modebuf = '+';
- }
- else
- {
- deban = 1;
- *modebuf = '-';
- }
+/** Add a ban from a ban list and mark bans that should be removed
+ * because they overlap.
+ *
+ * There are three invariants for a ban list. First, no ban may be
+ * more specific than another ban. Second, no exception may be more
+ * specific than another exception. Finally, no ban may be more
+ * specific than any exception.
+ *
+ * @param[in,out] banlist Pointer to head of list.
+ * @param[in] newban Ban (or exception) to add (or remove).
+ * @param[in] do_free If non-zero, free \a newban on failure.
+ * @return Zero if \a newban could be applied, non-zero if not.
+ */
+int apply_ban(struct Ban **banlist, struct Ban *newban, int do_free)
+{
+ struct Ban *ban;
+ size_t count = 0;
- mblen2 = 1;
- pblen2 = 0;
- cnt = 0;
- for (;;)
- {
- size_t nblen = 0;
- if (bl)
- nblen = strlen(bl->value.ban.banstr);
- if (cnt == 6 || (!bl && cnt) || pblen2 + nblen + 12 > MODEBUFLEN) /* The last check is to make sure
- that the receiving 2.9 will
- still process this */
- {
- /* Time to send buffer */
- modebuf[mblen2] = 0;
- sendto_channel_butserv(chptr, sptr, ":%s MODE %s %s%s",
- parv[0], chptr->chname, modebuf, parabuf);
-#ifndef NO_PROTOCOL9
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s %s%s",
- parv[0], chptr->chname, modebuf, parabuf);
-#endif
- *modebuf = deban ? '-' : '+';
- mblen2 = 1;
- pblen2 = 0;
- cnt = 0;
- }
- if (!bl) /* Done ? */
- break;
- if (deban || (bl->flags & CHFL_BURST_BAN))
- {
- /* Add ban to buffers and remove it */
- modebuf[mblen2++] = 'b';
- parabuf[pblen2++] = ' ';
- strcpy(parabuf + pblen2, bl->value.ban.banstr);
- pblen2 += nblen;
- cnt++;
- bl->flags &= ~CHFL_BURST_BAN;
+ assert(newban->flags & (BAN_ADD|BAN_DEL));
+ if (newban->flags & BAN_ADD) {
+ size_t totlen = 0;
+ /* If a less specific *active* entry is found, fail. */
+ for (ban = *banlist; ban; ban = ban->next) {
+ if (!bmatch(ban, newban) && !(ban->flags & BAN_DEL)) {
+ if (do_free)
+ free_ban(newban);
+ return 1;
}
- if (deban)
- {
- if (!(bl = next_removed_overlapped_ban()))
- {
- deban = 0;
- modebuf[mblen2++] = '+';
- bl = chptr->banlist;
- }
+ if (!(ban->flags & (BAN_OVERLAPPED|BAN_DEL))) {
+ count++;
+ totlen += strlen(ban->banstr);
}
- else
- bl = bl->next;
}
- /* Flush MODE [-b]+b ...: */
- if (cnt > 0 || mblen2 > 1)
- {
- modebuf[mblen2] = 0;
- sendto_channel_butserv(chptr, sptr, ":%s MODE %s %s%s",
- parv[0], chptr->chname, modebuf, parabuf);
-#ifndef NO_PROTOCOL9
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s %s%s " TIME_T_FMT,
- parv[0], chptr->chname, modebuf, parabuf, chptr->creationtime);
-#endif
+ /* Mark more specific entries and add this one to the end of the list. */
+ while ((ban = *banlist) != NULL) {
+ if (!bmatch(newban, ban)) {
+ ban->flags |= BAN_OVERLAPPED | BAN_DEL;
+ }
+ banlist = &ban->next;
}
-#ifndef NO_PROTOCOL9
- else if (send_it && !ts_sent)
- sendto_lowprot_butone(cptr, 9, ":%s MODE %s + " TIME_T_FMT,
- parv[0], chptr->chname, chptr->creationtime);
-#endif
- }
-
- return 0;
+ *banlist = newban;
+ return 0;
+ } else if (newban->flags & BAN_DEL) {
+ size_t remove_count = 0;
+ /* Mark more specific entries. */
+ for (ban = *banlist; ban; ban = ban->next) {
+ if (!bmatch(newban, ban)) {
+ ban->flags |= BAN_OVERLAPPED | BAN_DEL;
+ remove_count++;
+ }
+ }
+ if (remove_count)
+ return 0;
+ /* If no matches were found, fail. */
+ if (do_free)
+ free_ban(newban);
+ return 3;
+ }
+ if (do_free)
+ free_ban(newban);
+ return 4;
}
/*
- * m_part
- *
- * parv[0] = sender prefix
- * parv[1] = channel
- * parv[parc - 1] = comment
+ * Helper function to convert bans
*/
-int m_part(aClient *cptr, aClient *sptr, int parc, char *parv[])
+static void
+mode_parse_ban(struct ParseState *state, int *flag_p)
{
- Reg1 aChannel *chptr;
- Reg2 Link *lp;
- char *p = NULL, *name, pbuf[BUFSIZE];
- char *comment = (parc > 2 && !BadPtr(parv[parc - 1])) ? parv[parc - 1] : NULL;
+ char *t_str, *s;
+ struct Ban *ban, *newban;
+
+ if (state->parc <= 0) { /* Not enough args, send ban list */
+ if (MyUser(state->sptr) && !(state->done & DONE_BANLIST)) {
+ send_ban_list(state->sptr, state->chptr);
+ state->done |= DONE_BANLIST;
+ }
- *pbuf = '\0'; /* Initialize the part buffer... -Kev */
+ return;
+ }
- sptr->flags &= ~FLAGS_TS8;
+ if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
+ return;
- if (parc < 2 || parv[1][0] == '\0')
- {
- sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS), me.name, parv[0], "PART");
- return 0;
+ t_str = state->parv[state->args_used++]; /* grab arg */
+ state->parc--;
+ state->max_args--;
+
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
+ return;
}
- for (; (name = strtoken(&p, parv[1], ",")); parv[1] = NULL)
- {
- chptr = get_channel(sptr, name, !CREATE);
- if (!chptr)
- {
- sendto_one(sptr, err_str(ERR_NOSUCHCHANNEL), me.name, parv[0], name);
- continue;
- }
- if (*name == '&' && !MyUser(sptr))
- continue;
- /* Do not use IsMember here: zombies must be able to part too */
- if (!(lp = find_user_link(chptr->members, sptr)))
- {
- /* Normal to get when our client did a kick
- for a remote client (who sends back a PART),
- so check for remote client or not --Run */
- if (MyUser(sptr))
- sendto_one(sptr, err_str(ERR_NOTONCHANNEL), me.name, parv[0],
- chptr->chname);
- continue;
- }
- /* Recreate the /part list for sending to servers */
- if (*name != '&')
- {
- if (*pbuf)
- strcat(pbuf, ",");
- strcat(pbuf, name);
- }
- if (can_send(sptr, chptr) != 0) /* Returns 0 if we CAN send */
- comment = NULL;
- /* Send part to all clients */
- if (!(lp->flags & CHFL_ZOMBIE))
- {
- if (comment)
- sendto_channel_butserv(chptr, sptr, PartFmt2, parv[0], chptr->chname,
- comment);
- else
- sendto_channel_butserv(chptr, sptr, PartFmt1, parv[0], chptr->chname);
- }
- else if (MyUser(sptr))
- {
- if (comment)
- sendto_one(sptr, PartFmt2, parv[0], chptr->chname, comment);
- else
- sendto_one(sptr, PartFmt1, parv[0], chptr->chname);
- }
- remove_user_from_channel(sptr, chptr);
+ if ((s = strchr(t_str, ' ')))
+ *s = '\0';
+
+ if (!*t_str || *t_str == ':') { /* warn if empty */
+ if (MyUser(state->sptr))
+ need_more_params(state->sptr, state->dir == MODE_ADD ? "MODE +b" :
+ "MODE -b");
+ return;
}
- /* Send out the parts to all servers... -Kev */
- if (*pbuf)
- {
- if (comment)
- sendto_serv_butone(cptr, PartFmt2, parv[0], pbuf, comment);
- else
- sendto_serv_butone(cptr, PartFmt1, parv[0], pbuf);
+
+ /* Clear all ADD/DEL/OVERLAPPED flags from ban list. */
+ if (!(state->done & DONE_BANCLEAN)) {
+ for (ban = state->chptr->banlist; ban; ban = ban->next)
+ ban->flags &= ~(BAN_ADD | BAN_DEL | BAN_OVERLAPPED);
+ state->done |= DONE_BANCLEAN;
}
- return 0;
+
+ /* remember the ban for the moment... */
+ newban = state->banlist + (state->numbans++);
+ newban->next = 0;
+ newban->flags = ((state->dir == MODE_ADD) ? BAN_ADD : BAN_DEL)
+ | (*flag_p == MODE_BAN ? 0 : BAN_EXCEPTION);
+ set_ban_mask(newban, collapse(pretty_mask(t_str)));
+ ircd_strncpy(newban->who, IsUser(state->sptr) ? cli_name(state->sptr) : "*", NICKLEN);
+ newban->when = TStime();
+ apply_ban(&state->chptr->banlist, newban, 0);
}
/*
- * m_kick
- *
- * parv[0] = sender prefix
- * parv[1] = channel
- * parv[2] = client to kick
- * parv[parc-1] = kick comment
+ * This is the bottom half of the ban processor
*/
-int m_kick(aClient *cptr, aClient *sptr, int parc, char *parv[])
+static void
+mode_process_bans(struct ParseState *state)
{
- aClient *who;
- aChannel *chptr;
- char *comment;
- Link *lp, *lp2;
+ struct Ban *ban, *newban, *prevban, *nextban;
+ int count = 0;
+ int len = 0;
+ int banlen;
+ int changed = 0;
- sptr->flags &= ~FLAGS_TS8;
+ for (prevban = 0, ban = state->chptr->banlist; ban; ban = nextban) {
+ count++;
+ banlen = strlen(ban->banstr);
+ len += banlen;
+ nextban = ban->next;
- if (parc < 3 || *parv[1] == '\0')
- {
- sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS), me.name, parv[0], "KICK");
- return 0;
- }
+ if ((ban->flags & (BAN_DEL | BAN_ADD)) == (BAN_DEL | BAN_ADD)) {
+ if (prevban)
+ prevban->next = 0; /* Break the list; ban isn't a real ban */
+ else
+ state->chptr->banlist = 0;
- if (IsServer(sptr))
- send_hack_notice(cptr, sptr, parc, parv, 1, 3);
+ count--;
+ len -= banlen;
- comment = (BadPtr(parv[parc - 1])) ? parv[0] : parv[parc - 1];
- if (strlen(comment) > (size_t)TOPICLEN)
- comment[TOPICLEN] = '\0';
+ continue;
+ } else if (ban->flags & BAN_DEL) { /* Deleted a ban? */
+ char *bandup;
+ DupString(bandup, ban->banstr);
+ modebuf_mode_string(state->mbuf, MODE_DEL | MODE_BAN,
+ bandup, 1);
+
+ if (state->flags & MODE_PARSE_SET) { /* Ok, make it take effect */
+ if (prevban) /* clip it out of the list... */
+ prevban->next = ban->next;
+ else
+ state->chptr->banlist = ban->next;
+
+ count--;
+ len -= banlen;
+ free_ban(ban);
+
+ changed++;
+ continue; /* next ban; keep prevban like it is */
+ } else
+ ban->flags &= BAN_IPMASK; /* unset other flags */
+ } else if (ban->flags & BAN_ADD) { /* adding a ban? */
+ if (prevban)
+ prevban->next = 0; /* Break the list; ban isn't a real ban */
+ else
+ state->chptr->banlist = 0;
+
+ /* If we're supposed to ignore it, do so. */
+ if (ban->flags & BAN_OVERLAPPED &&
+ !(state->flags & MODE_PARSE_BOUNCE)) {
+ count--;
+ len -= banlen;
+ } else {
+ if (state->flags & MODE_PARSE_SET && MyUser(state->sptr) &&
+ !(state->mbuf->mb_dest & MODEBUF_DEST_OPMODE) &&
+ (len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXBANS)) ||
+ count > feature_int(FEAT_MAXBANS))) {
+ send_reply(state->sptr, ERR_BANLISTFULL, state->chptr->chname,
+ ban->banstr);
+ count--;
+ len -= banlen;
+ } else {
+ char *bandup;
+ /* add the ban to the buffer */
+ DupString(bandup, ban->banstr);
+ modebuf_mode_string(state->mbuf, MODE_ADD | MODE_BAN,
+ bandup, 1);
+
+ if (state->flags & MODE_PARSE_SET) { /* create a new ban */
+ newban = make_ban(ban->banstr);
+ strcpy(newban->who, ban->who);
+ newban->when = ban->when;
+ newban->flags = ban->flags & BAN_IPMASK;
+
+ newban->next = state->chptr->banlist; /* and link it in */
+ state->chptr->banlist = newban;
+
+ changed++;
+ }
+ }
+ }
+ }
- *nickbuf = *buf = '\0';
+ prevban = ban;
+ } /* for (prevban = 0, ban = state->chptr->banlist; ban; ban = nextban) { */
- chptr = get_channel(sptr, parv[1], !CREATE);
- if (!chptr)
- {
- sendto_one(sptr, err_str(ERR_NOSUCHCHANNEL), me.name, parv[0], parv[1]);
- return 0;
- }
- if (IsLocalChannel(parv[1]) && !MyUser(sptr))
- return 0;
- if (IsModelessChannel(parv[1]))
- {
- sendto_one(sptr, err_str(ERR_CHANOPRIVSNEEDED), me.name, parv[0],
- chptr->chname);
- return 0;
- }
- if (!IsServer(cptr) && !is_chan_op(sptr, chptr))
- {
- sendto_one(sptr, err_str(ERR_CHANOPRIVSNEEDED),
- me.name, parv[0], chptr->chname);
- return 0;
- }
+ if (changed) /* if we changed the ban list, we must invalidate the bans */
+ mode_ban_invalidate(state->chptr);
+}
- lp2 = find_user_link(chptr->members, sptr);
- if (MyUser(sptr) || Protocol(cptr) < 10)
- {
- if (!(who = find_chasing(sptr, parv[2], NULL)))
- return 0; /* No such user left! */
- }
- else if (!(who = findNUser(parv[2])))
- return 0; /* No such user left! */
- /* if the user is +k, prevent a kick from local user */
- if (IsChannelService(who) && MyUser(sptr))
- {
- sendto_one(sptr, err_str(ERR_ISCHANSERVICE), me.name,
- parv[0], who->name, chptr->chname);
- return 0;
+/*
+ * Helper function to process client changes
+ */
+static void
+mode_parse_client(struct ParseState *state, int *flag_p)
+{
+ char *t_str;
+ char *colon;
+ struct Client *acptr;
+ struct Membership *member;
+ int oplevel = MAXOPLEVEL + 1;
+ int req_oplevel;
+ int i;
+
+ if (MyUser(state->sptr) && state->max_args <= 0) /* drop if too many args */
+ return;
+
+ if (state->parc <= 0) /* return if not enough args */
+ return;
+
+ t_str = state->parv[state->args_used++]; /* grab arg */
+ state->parc--;
+ state->max_args--;
+
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
+ return;
}
- if (((lp = find_user_link(chptr->members, who)) &&
- !(lp->flags & CHFL_ZOMBIE)) || IsServer(sptr))
- {
- if (who->from != cptr &&
- ((lp2 && (lp2->flags & CHFL_DEOPPED)) || (!lp2 && IsUser(sptr))))
- {
- /*
- * Bounce here:
- * cptr must be a server (or cptr == sptr and
- * sptr->flags can't have DEOPPED set
- * when CHANOP is set).
- */
- sendto_one(cptr, ":%s JOIN %s", who->name, parv[1]);
- if (lp->flags & CHFL_CHANOP)
- {
- if (Protocol(cptr) < 10)
- sendto_one(cptr, ":%s MODE %s +o %s " TIME_T_FMT,
- me.name, parv[1], who->name, chptr->creationtime);
- else
- sendto_one(cptr, "%s MODE %s +o %s%s " TIME_T_FMT,
- NumServ(&me), parv[1], NumNick(who), chptr->creationtime);
- }
- if (lp->flags & CHFL_VOICE)
- {
- if (Protocol(cptr) < 10)
- sendto_one(cptr, ":%s MODE %s +v %s " TIME_T_FMT,
- me.name, chptr->chname, who->name, chptr->creationtime);
- else
- sendto_one(cptr, "%s MODE %s +v %s%s " TIME_T_FMT,
- NumServ(&me), parv[1], NumNick(who), chptr->creationtime);
- }
- }
- else
- {
- if (lp)
- sendto_channel_butserv(chptr, sptr,
- ":%s KICK %s %s :%s", parv[0], chptr->chname, who->name, comment);
- if (!IsLocalChannel(parv[1]))
- {
- sendto_lowprot_butone(cptr, 9, ":%s KICK %s %s :%s",
- parv[0], chptr->chname, who->name, comment);
- sendto_highprot_butone(cptr, 10, ":%s KICK %s %s%s :%s",
- parv[0], parv[1], NumNick(who), comment);
- }
- if (lp)
- {
+
+ if (MyUser(state->sptr)) {
+ colon = strchr(t_str, ':');
+ if (colon != NULL) {
+ *colon++ = '\0';
+ req_oplevel = atoi(colon);
+ if (*flag_p == CHFL_VOICE || state->dir == MODE_DEL) {
+ /* Ignore the colon and its argument. */
+ } else if (!(state->flags & MODE_PARSE_FORCE)
+ && state->member
+ && (req_oplevel < OpLevel(state->member)
+ || (req_oplevel == OpLevel(state->member)
+ && OpLevel(state->member) < MAXOPLEVEL)
+ || req_oplevel > MAXOPLEVEL)) {
+ send_reply(state->sptr, ERR_NOTLOWEROPLEVEL,
+ t_str, state->chptr->chname,
+ OpLevel(state->member), req_oplevel, "op",
+ OpLevel(state->member) == req_oplevel ? "the same" : "a higher");
+ } else if (req_oplevel <= MAXOPLEVEL)
+ oplevel = req_oplevel;
+ }
+ /* find client we're manipulating */
+ acptr = find_chasing(state->sptr, t_str, NULL);
+ } else {
+ if (t_str[5] == ':') {
+ t_str[5] = '\0';
+ oplevel = atoi(t_str + 6);
+ }
+ acptr = findNUser(t_str);
+ }
+
+ if (!acptr)
+ return; /* find_chasing() already reported an error to the user */
+
+ for (i = 0; i < MAXPARA; i++) /* find an element to stick them in */
+ if (!state->cli_change[i].flag || (state->cli_change[i].client == acptr &&
+ state->cli_change[i].flag & flag_p[0]))
+ break; /* found a slot */
+
+ /* If we are going to bounce this deop, mark the correct oplevel. */
+ if (state->flags & MODE_PARSE_BOUNCE
+ && state->dir == MODE_DEL
+ && flag_p[0] == MODE_CHANOP
+ && (member = find_member_link(state->chptr, acptr)))
+ oplevel = OpLevel(member);
+
+ /* Store what we're doing to them */
+ state->cli_change[i].flag = state->dir | flag_p[0];
+ state->cli_change[i].oplevel = oplevel;
+ state->cli_change[i].client = acptr;
+}
+
/*
- * Consider:
- *
- * client
- * |
- * c
- * |
- * X --a--> A --b--> B --d--> D
- * |
- * who
- *
- * Where `who' is being KICK-ed by a "KICK" message received by server 'A'
- * via 'a', or on server 'B' via either 'b' or 'c', or on server D via 'd'.
- *
- * a) On server A : set CHFL_ZOMBIE for `who' (lp) and pass on the KICK.
- * Remove the user immedeately when no users are left on the channel.
- * b) On server B : remove the user (who/lp) from the channel, send a
- * PART upstream (to A) and pass on the KICK.
- * c) KICKed by `client'; On server B : remove the user (who/lp) from the
- * channel, and pass on the KICK.
- * d) On server D : remove the user (who/lp) from the channel, and pass on
- * the KICK.
- *
- * Note:
- * - Setting the ZOMBIE flag never hurts, we either remove the
- * client after that or we don't.
- * - The KICK message was already passed on, as should be in all cases.
- * - `who' is removed in all cases except case a) when users are left.
- * - A PART is only sent upstream in case b).
- *
- * 2 aug 97:
- *
- * 6
- * |
- * 1 --- 2 --- 3 --- 4 --- 5
- * | |
- * kicker who
- *
- * We also need to turn 'who' into a zombie on servers 1 and 6,
- * because a KICK from 'who' (kicking someone else in that direction)
- * can arrive there afterwards - which should not be bounced itself.
- * Therefore case a) also applies for servers 1 and 6.
- *
- * --Run
+ * Helper function to process the changed client list
*/
- /* Default for case a): */
- lp->flags |= CHFL_ZOMBIE;
- /* Case b) or c) ?: */
- if (MyUser(who)) /* server 4 */
- {
- if (IsServer(cptr)) /* Case b) ? */
- sendto_one(cptr, PartFmt1, who->name, parv[1]);
- remove_user_from_channel(who, chptr);
- return 0;
+static void
+mode_process_clients(struct ParseState *state)
+{
+ int i;
+ struct Membership *member;
+
+ for (i = 0; state->cli_change[i].flag; i++) {
+ assert(0 != state->cli_change[i].client);
+
+ /* look up member link */
+ if (!(member = find_member_link(state->chptr,
+ state->cli_change[i].client)) ||
+ (MyUser(state->sptr) && IsZombie(member))) {
+ if (MyUser(state->sptr))
+ send_reply(state->sptr, ERR_USERNOTINCHANNEL,
+ cli_name(state->cli_change[i].client),
+ state->chptr->chname);
+ continue;
+ }
+
+ if ((state->cli_change[i].flag & MODE_ADD &&
+ (state->cli_change[i].flag & member->status)) ||
+ (state->cli_change[i].flag & MODE_DEL &&
+ !(state->cli_change[i].flag & member->status)))
+ continue; /* no change made, don't do anything */
+
+ /* see if the deop is allowed */
+ if ((state->cli_change[i].flag & (MODE_DEL | MODE_CHANOP)) ==
+ (MODE_DEL | MODE_CHANOP)) {
+ /* prevent +k users from being deopped */
+ if (IsChannelService(state->cli_change[i].client)) {
+ if (state->flags & MODE_PARSE_FORCE) /* it was forced */
+ sendto_opmask_butone(0, SNO_HACK4, "Deop of +k user on %H by %s",
+ state->chptr,
+ (IsServer(state->sptr) ? cli_name(state->sptr) :
+ cli_name((cli_user(state->sptr))->server)));
+
+ else if (MyUser(state->sptr) && state->flags & MODE_PARSE_SET) {
+ send_reply(state->sptr, ERR_ISCHANSERVICE,
+ cli_name(state->cli_change[i].client),
+ state->chptr->chname);
+ continue;
}
- if (who->from == cptr) /* True on servers 1, 5 and 6 */
- {
- aClient *acptr = IsServer(sptr) ? sptr : sptr->user->server;
- for (; acptr != &me; acptr = acptr->serv->up)
- if (acptr == who->user->server) /* Case d) (server 5) */
- {
- remove_user_from_channel(who, chptr);
- return 0;
- }
+ }
+
+ /* check deop for local user */
+ if (MyUser(state->sptr)) {
+
+ /* don't allow local opers to be deopped on local channels */
+ if (state->cli_change[i].client != state->sptr &&
+ IsLocalChannel(state->chptr->chname) &&
+ HasPriv(state->cli_change[i].client, PRIV_DEOP_LCHAN)) {
+ send_reply(state->sptr, ERR_ISOPERLCHAN,
+ cli_name(state->cli_change[i].client),
+ state->chptr->chname);
+ continue;
+ }
+
+ /* Forbid deopping other members with an oplevel less than
+ * one's own level, and other members with an oplevel the same
+ * as one's own unless both are at MAXOPLEVEL. */
+ if (state->sptr != state->cli_change[i].client
+ && state->member
+ && ((OpLevel(member) < OpLevel(state->member))
+ || (OpLevel(member) == OpLevel(state->member)
+ && OpLevel(member) < MAXOPLEVEL))) {
+ int equal = (OpLevel(member) == OpLevel(state->member));
+ send_reply(state->sptr, ERR_NOTLOWEROPLEVEL,
+ cli_name(state->cli_change[i].client),
+ state->chptr->chname,
+ OpLevel(state->member), OpLevel(member),
+ "deop", equal ? "the same" : "a higher");
+ continue;
}
- /* Case a) (servers 1, 2, 3 and 6) */
- for (lp = chptr->members; lp; lp = lp->next)
- if (!(lp->flags & CHFL_ZOMBIE))
- break;
- if (!lp)
- remove_user_from_channel(who, chptr);
-#ifdef GODMODE
- else
- sendto_op_mask(SNO_HACK2, "%s is now a zombie on %s",
- who->name, chptr->chname);
-#endif
}
}
- }
- else if (MyUser(sptr))
- sendto_one(sptr, err_str(ERR_USERNOTINCHANNEL),
- me.name, parv[0], who->name, chptr->chname);
- return 0;
+ /* set op-level of member being opped */
+ if ((state->cli_change[i].flag & (MODE_ADD | MODE_CHANOP)) ==
+ (MODE_ADD | MODE_CHANOP)) {
+ /* If a valid oplevel was specified, use it.
+ * Otherwise, if being opped by an outsider, get MAXOPLEVEL.
+ * Otherwise, if not an apass channel, or state->member has
+ * MAXOPLEVEL, get oplevel MAXOPLEVEL.
+ * Otherwise, get state->member's oplevel+1.
+ */
+ if (state->cli_change[i].oplevel <= MAXOPLEVEL)
+ SetOpLevel(member, state->cli_change[i].oplevel);
+ else if (!state->member)
+ SetOpLevel(member, MAXOPLEVEL);
+ else if (OpLevel(state->member) >= MAXOPLEVEL)
+ SetOpLevel(member, OpLevel(state->member));
+ else
+ SetOpLevel(member, OpLevel(state->member) + 1);
+ }
+
+ /* actually effect the change */
+ if (state->flags & MODE_PARSE_SET) {
+ if (state->cli_change[i].flag & MODE_ADD) {
+ if (IsDelayedJoin(member) && !IsZombie(member))
+ RevealDelayedJoin(member);
+ member->status |= (state->cli_change[i].flag &
+ (MODE_CHANOP | MODE_VOICE));
+ if (state->cli_change[i].flag & MODE_CHANOP)
+ ClearDeopped(member);
+ } else
+ member->status &= ~(state->cli_change[i].flag &
+ (MODE_CHANOP | MODE_VOICE));
+ }
+
+ /* accumulate the change */
+ modebuf_mode_client(state->mbuf, state->cli_change[i].flag,
+ state->cli_change[i].client,
+ state->cli_change[i].oplevel);
+ } /* for (i = 0; state->cli_change[i].flags; i++) */
}
/*
- * m_topic
- *
- * parv[0] = sender prefix
- * parv[1] = channel
- * parv[parc - 1] = topic (if parc > 2)
+ * Helper function to process the simple modes
*/
-int m_topic(aClient *cptr, aClient *sptr, int parc, char *parv[])
+static void
+mode_parse_mode(struct ParseState *state, int *flag_p)
{
- aChannel *chptr;
- char *topic = NULL, *name, *p = NULL;
-
- if (parc < 2)
- {
- sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS), me.name, parv[0], "TOPIC");
- return 0;
+ /* If they're not an oper, they can't change modes */
+ if (state->flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER)) {
+ send_notoper(state);
+ return;
}
- if (parc > 2)
- topic = parv[parc - 1];
+ if (!state->mbuf)
+ return;
- for (; (name = strtoken(&p, parv[1], ",")); parv[1] = NULL)
- {
- chptr = NULL;
- if (!IsChannelName(name) || !(chptr = FindChannel(name)) ||
- ((topic || SecretChannel(chptr)) && !IsMember(sptr, chptr)))
- {
- sendto_one(sptr, err_str(chptr ? ERR_NOTONCHANNEL : ERR_NOSUCHCHANNEL),
- me.name, parv[0], chptr ? chptr->chname : name);
- continue;
- }
- if (IsModelessChannel(name))
- {
- sendto_one(sptr, err_str(ERR_CHANOPRIVSNEEDED), me.name, parv[0],
- chptr->chname);
- continue;
- }
- if (IsLocalChannel(name) && !MyUser(sptr))
- continue;
+ /* Local users are not permitted to change registration status */
+ if (flag_p[0] == MODE_REGISTERED && !(state->flags & MODE_PARSE_FORCE) &&
+ MyUser(state->sptr))
+ return;
- if (!topic) /* only asking for topic */
- {
- if (chptr->topic[0] == '\0')
- sendto_one(sptr, rpl_str(RPL_NOTOPIC), me.name, parv[0], chptr->chname);
- else
- {
- sendto_one(sptr, rpl_str(RPL_TOPIC),
- me.name, parv[0], chptr->chname, chptr->topic);
- sendto_one(sptr, rpl_str(RPL_TOPICWHOTIME),
- me.name, parv[0], chptr->chname,
- chptr->topic_nick, chptr->topic_time);
- }
- }
- else if (((chptr->mode.mode & MODE_TOPICLIMIT) == 0 ||
- is_chan_op(sptr, chptr)) && topic)
- {
- /* setting a topic */
- strncpy(chptr->topic, topic, TOPICLEN);
- strncpy(chptr->topic_nick, sptr->name, NICKLEN);
- chptr->topic_time = now;
- sendto_serv_butone(cptr, ":%s TOPIC %s :%s",
- parv[0], chptr->chname, chptr->topic);
- sendto_channel_butserv(chptr, sptr, ":%s TOPIC %s :%s",
- parv[0], chptr->chname, chptr->topic);
+ if (state->dir == MODE_ADD) {
+ state->add |= flag_p[0];
+ state->del &= ~flag_p[0];
+
+ if (flag_p[0] & MODE_SECRET) {
+ state->add &= ~MODE_PRIVATE;
+ state->del |= MODE_PRIVATE;
+ } else if (flag_p[0] & MODE_PRIVATE) {
+ state->add &= ~MODE_SECRET;
+ state->del |= MODE_SECRET;
}
- else
- sendto_one(sptr, err_str(ERR_CHANOPRIVSNEEDED),
- me.name, parv[0], chptr->chname);
+ } else {
+ state->add &= ~flag_p[0];
+ state->del |= flag_p[0];
}
- return 0;
+
+ assert(0 == (state->add & state->del));
+ assert((MODE_SECRET | MODE_PRIVATE) !=
+ (state->add & (MODE_SECRET | MODE_PRIVATE)));
}
-/*
- * m_invite
- * parv[0] - sender prefix
- * parv[1] - user to invite
- * parv[2] - channel name
- *
- * - INVITE now is accepted only if who does it is chanop (this of course
- * implies that channel must exist and he must be on it).
- *
- * - On the other side it IS processed even if channel is NOT invite only
- * leaving room for other enhancements like inviting banned ppl. -- Nemesi
+/**
+ * This routine is intended to parse MODE or OPMODE commands and effect the
+ * changes (or just build the bounce buffer).
*
+ * \param[out] mbuf Receives parsed representation of mode change.
+ * \param[in] cptr Connection that sent the message to this server.
+ * \param[in] sptr Original source of the message.
+ * \param[in] chptr Channel whose modes are being changed.
+ * \param[in] parc Number of valid strings in \a parv.
+ * \param[in] parv Text arguments representing mode change, with the
+ * zero'th element containing a string like "+m" or "-o".
+ * \param[in] flags Set of bitwise MODE_PARSE_* flags.
+ * \param[in] member If non-null, the channel member attempting to change the modes.
*/
-int m_invite(aClient *UNUSED(cptr), aClient *sptr, int parc, char *parv[])
+int
+mode_parse(struct ModeBuf *mbuf, struct Client *cptr, struct Client *sptr,
+ struct Channel *chptr, int parc, char *parv[], unsigned int flags,
+ struct Membership* member)
{
- aClient *acptr;
- aChannel *chptr;
+ static int chan_flags[] = {
+ MODE_CHANOP, 'o',
+ MODE_VOICE, 'v',
+ MODE_PRIVATE, 'p',
+ MODE_SECRET, 's',
+ MODE_MODERATED, 'm',
+ MODE_TOPICLIMIT, 't',
+ MODE_INVITEONLY, 'i',
+ MODE_NOPRIVMSGS, 'n',
+ MODE_KEY, 'k',
+ MODE_APASS, 'A',
+ MODE_UPASS, 'U',
+ MODE_REGISTERED, 'R',
+ MODE_BAN, 'b',
+ MODE_LIMIT, 'l',
+ MODE_REGONLY, 'r',
+ MODE_DELJOINS, 'D',
+ MODE_ADD, '+',
+ MODE_DEL, '-',
+ 0x0, 0x0
+ };
+ int i;
+ int *flag_p;
+ unsigned int t_mode;
+ char *modestr;
+ struct ParseState state;
+
+ assert(0 != cptr);
+ assert(0 != sptr);
+ assert(0 != chptr);
+ assert(0 != parc);
+ assert(0 != parv);
+
+ state.mbuf = mbuf;
+ state.cptr = cptr;
+ state.sptr = sptr;
+ state.chptr = chptr;
+ state.member = member;
+ state.parc = parc;
+ state.parv = parv;
+ state.flags = flags;
+ state.dir = MODE_ADD;
+ state.done = 0;
+ state.add = 0;
+ state.del = 0;
+ state.args_used = 0;
+ state.max_args = MAXMODEPARAMS;
+ state.numbans = 0;
+
+ for (i = 0; i < MAXPARA; i++) { /* initialize ops/voices arrays */
+ state.banlist[i].next = 0;
+ state.banlist[i].who[0] = '\0';
+ state.banlist[i].when = 0;
+ state.banlist[i].flags = 0;
+ state.cli_change[i].flag = 0;
+ state.cli_change[i].client = 0;
+ }
+
+ modestr = state.parv[state.args_used++];
+ state.parc--;
+
+ while (*modestr) {
+ for (; *modestr; modestr++) {
+ for (flag_p = chan_flags; flag_p[0]; flag_p += 2) /* look up flag */
+ if (flag_p[1] == *modestr)
+ break;
- if (parc < 3 || *parv[2] == '\0')
- {
- sendto_one(sptr, err_str(ERR_NEEDMOREPARAMS), me.name, parv[0], "INVITE");
- return 0;
- }
+ if (!flag_p[0]) { /* didn't find it? complain and continue */
+ if (MyUser(state.sptr))
+ send_reply(state.sptr, ERR_UNKNOWNMODE, *modestr);
+ continue;
+ }
- if (!(acptr = FindUser(parv[1])))
- {
- sendto_one(sptr, err_str(ERR_NOSUCHNICK), me.name, parv[0], parv[1]);
- return 0;
- }
+ switch (*modestr) {
+ case '+': /* switch direction to MODE_ADD */
+ case '-': /* switch direction to MODE_DEL */
+ state.dir = flag_p[0];
+ break;
- if (is_silenced(sptr, acptr))
- return 0;
+ case 'l': /* deal with limits */
+ mode_parse_limit(&state, flag_p);
+ break;
- if (MyUser(sptr))
- clean_channelname(parv[2]);
- else if (IsLocalChannel(parv[2]))
- return 0;
+ case 'k': /* deal with keys */
+ mode_parse_key(&state, flag_p);
+ break;
- if (*parv[2] == '0' || !IsChannelName(parv[2]))
- return 0;
+ case 'A': /* deal with Admin passes */
+ if (IsServer(cptr) || feature_bool(FEAT_OPLEVELS))
+ mode_parse_apass(&state, flag_p);
+ break;
- if (!(chptr = FindChannel(parv[2])))
- {
- if (IsModelessChannel(parv[2]) || IsLocalChannel(parv[2]))
- {
- sendto_one(sptr, err_str(ERR_NOTONCHANNEL), me.name, parv[0], parv[2]);
- return 0;
- }
+ case 'U': /* deal with user passes */
+ if (IsServer(cptr) || feature_bool(FEAT_OPLEVELS))
+ mode_parse_upass(&state, flag_p);
+ break;
- /* Do not disallow to invite to non-existant #channels, otherwise they
- would simply first be created, causing only MORE bandwidth usage. */
- if (MyConnect(sptr))
- {
- if (check_target_limit(sptr, acptr, acptr->name, 0))
- return 0;
+ case 'b': /* deal with bans */
+ mode_parse_ban(&state, flag_p);
+ break;
+
+ case 'o': /* deal with ops/voice */
+ case 'v':
+ mode_parse_client(&state, flag_p);
+ break;
- sendto_one(sptr, rpl_str(RPL_INVITING), me.name, parv[0],
- acptr->name, parv[2]);
+ default: /* deal with other modes */
+ mode_parse_mode(&state, flag_p);
+ break;
+ } /* switch (*modestr) */
+ } /* for (; *modestr; modestr++) */
+
+ if (state.flags & MODE_PARSE_BURST)
+ break; /* don't interpret any more arguments */
+
+ if (state.parc > 0) { /* process next argument in string */
+ modestr = state.parv[state.args_used++];
+ state.parc--;
+
+ /* is it a TS? */
+ if (IsServer(state.cptr) && !state.parc && IsDigit(*modestr)) {
+ time_t recv_ts;
+
+ if (!(state.flags & MODE_PARSE_SET)) /* don't set earlier TS if */
+ break; /* we're then going to bounce the mode! */
+
+ recv_ts = atoi(modestr);
+
+ if (recv_ts && recv_ts < state.chptr->creationtime)
+ state.chptr->creationtime = recv_ts; /* respect earlier TS */
+ else if (recv_ts > state.chptr->creationtime) {
+ struct Client *sserv;
+
+ /* Check whether the originating server has fully processed
+ * the burst to it. */
+ sserv = state.cptr;
+ if (!IsServer(sserv))
+ sserv = cli_user(sserv)->server;
+ if (IsBurstOrBurstAck(sserv)) {
+ /* This is a legal but unusual case; the source server
+ * probably just has not processed the BURST for this
+ * channel. It SHOULD wipe out all its modes soon, so
+ * silently ignore the mode change rather than send a
+ * bounce that could desync modes from our side (that
+ * have already been sent).
+ */
+ state.mbuf->mb_add = 0;
+ state.mbuf->mb_rem = 0;
+ state.mbuf->mb_count = 0;
+ return state.args_used;
+ } else {
+ /* Server is desynced; bounce the mode and deop the source
+ * to fix it. */
+ state.flags &= ~MODE_PARSE_SET;
+ state.flags |= MODE_PARSE_BOUNCE;
+ state.mbuf->mb_dest &= ~(MODEBUF_DEST_CHANNEL | MODEBUF_DEST_HACK4);
+ state.mbuf->mb_dest |= MODEBUF_DEST_BOUNCE | MODEBUF_DEST_HACK2;
+ if (!IsServer(state.cptr))
+ state.mbuf->mb_dest |= MODEBUF_DEST_DEOP;
+ }
+ }
- if (acptr->user->away)
- sendto_one(sptr, rpl_str(RPL_AWAY), me.name, parv[0],
- acptr->name, acptr->user->away);
+ break; /* break out of while loop */
+ } else if (state.flags & MODE_PARSE_STRICT ||
+ (MyUser(state.sptr) && state.max_args <= 0)) {
+ state.parc++; /* we didn't actually gobble the argument */
+ state.args_used--;
+ break; /* break out of while loop */
+ }
}
+ } /* while (*modestr) */
- sendto_prefix_one(acptr, sptr, ":%s INVITE %s :%s", parv[0],
- acptr->name, parv[2]);
+ /*
+ * the rest of the function finishes building resultant MODEs; if the
+ * origin isn't a member or an oper, skip it.
+ */
+ if (!state.mbuf || state.flags & (MODE_PARSE_NOTOPER | MODE_PARSE_NOTMEMBER))
+ return state.args_used; /* tell our parent how many args we gobbled */
- return 0;
- }
+ t_mode = state.chptr->mode.mode;
- if (!IsMember(sptr, chptr))
- {
- sendto_one(sptr, err_str(ERR_NOTONCHANNEL), me.name, parv[0],
- chptr->chname);
- return 0;
- }
+ if (state.del & t_mode) { /* delete any modes to be deleted... */
+ modebuf_mode(state.mbuf, MODE_DEL | (state.del & t_mode));
- if (IsMember(acptr, chptr))
- {
- sendto_one(sptr, err_str(ERR_USERONCHANNEL),
- me.name, parv[0], acptr->name, chptr->chname);
- return 0;
+ t_mode &= ~state.del;
}
+ if (state.add & ~t_mode) { /* add any modes to be added... */
+ modebuf_mode(state.mbuf, MODE_ADD | (state.add & ~t_mode));
- if (MyConnect(sptr))
- {
- if (!is_chan_op(sptr, chptr))
- {
- sendto_one(sptr, err_str(ERR_CHANOPRIVSNEEDED),
- me.name, parv[0], chptr->chname);
- return 0;
- }
-
- /* If we get here, it was a VALID and meaningful INVITE */
+ t_mode |= state.add;
+ }
- if (check_target_limit(sptr, acptr, acptr->name, 0))
- return 0;
+ if (state.flags & MODE_PARSE_SET) { /* set the channel modes */
+ if ((state.chptr->mode.mode & MODE_INVITEONLY) &&
+ !(t_mode & MODE_INVITEONLY))
+ mode_invite_clear(state.chptr);
- sendto_one(sptr, rpl_str(RPL_INVITING), me.name, parv[0],
- acptr->name, chptr->chname);
+ state.chptr->mode.mode = t_mode;
+ }
- if (acptr->user->away)
- sendto_one(sptr, rpl_str(RPL_AWAY), me.name, parv[0],
- acptr->name, acptr->user->away);
+ if (state.flags & MODE_PARSE_WIPEOUT) {
+ if (state.chptr->mode.limit && !(state.done & DONE_LIMIT))
+ modebuf_mode_uint(state.mbuf, MODE_DEL | MODE_LIMIT,
+ state.chptr->mode.limit);
+ if (*state.chptr->mode.key && !(state.done & DONE_KEY_DEL))
+ modebuf_mode_string(state.mbuf, MODE_DEL | MODE_KEY,
+ state.chptr->mode.key, 0);
+ if (*state.chptr->mode.upass && !(state.done & DONE_UPASS_DEL))
+ modebuf_mode_string(state.mbuf, MODE_DEL | MODE_UPASS,
+ state.chptr->mode.upass, 0);
+ if (*state.chptr->mode.apass && !(state.done & DONE_APASS_DEL))
+ modebuf_mode_string(state.mbuf, MODE_DEL | MODE_APASS,
+ state.chptr->mode.apass, 0);
}
- if (MyConnect(acptr))
- add_invite(acptr, chptr);
+ if (state.done & DONE_BANCLEAN) /* process bans */
+ mode_process_bans(&state);
- sendto_prefix_one(acptr, sptr, ":%s INVITE %s :%s", parv[0],
- acptr->name, chptr->chname);
+ /* process client changes */
+ if (state.cli_change[0].flag)
+ mode_process_clients(&state);
- return 0;
+ return state.args_used; /* tell our parent how many args we gobbled */
}
-static int number_of_zombies(aChannel *chptr)
+/*
+ * Initialize a join buffer
+ */
+void
+joinbuf_init(struct JoinBuf *jbuf, struct Client *source,
+ struct Client *connect, unsigned int type, char *comment,
+ time_t create)
{
- Reg1 Link *lp;
- Reg2 int count = 0;
- for (lp = chptr->members; lp; lp = lp->next)
- if (lp->flags & CHFL_ZOMBIE)
- count++;
- return count;
+ int i;
+
+ assert(0 != jbuf);
+ assert(0 != source);
+ assert(0 != connect);
+
+ jbuf->jb_source = source; /* just initialize struct JoinBuf */
+ jbuf->jb_connect = connect;
+ jbuf->jb_type = type;
+ jbuf->jb_comment = comment;
+ jbuf->jb_create = create;
+ jbuf->jb_count = 0;
+ jbuf->jb_strlen = (((type == JOINBUF_TYPE_JOIN ||
+ type == JOINBUF_TYPE_PART ||
+ type == JOINBUF_TYPE_PARTALL) ?
+ STARTJOINLEN : STARTCREATELEN) +
+ (comment ? strlen(comment) + 2 : 0));
+
+ for (i = 0; i < MAXJOINARGS; i++)
+ jbuf->jb_channels[i] = 0;
}
/*
- * m_list
- *
- * parv[0] = sender prefix
- * parv[1] = channel list or user/time limit
- * parv[2...] = more user/time limits
+ * Add a channel to the join buffer
*/
-int m_list(aClient *UNUSED(cptr), aClient *sptr, int parc, char *parv[])
+void
+joinbuf_join(struct JoinBuf *jbuf, struct Channel *chan, unsigned int flags)
{
- aChannel *chptr;
- char *name, *p = NULL;
- int show_usage = 0, show_channels = 0, param;
- aListingArgs args = {
- 2147483647, /* max_time */
- 0, /* min_time */
- 4294967295U, /* max_users */
- 0, /* min_users */
- 0, /* topic_limits */
- 2147483647, /* max_topic_time */
- 0, /* min_topic_time */
- NULL /* chptr */
- };
-
- if (sptr->listing) /* Already listing ? */
- {
- sptr->listing->chptr->mode.mode &= ~MODE_LISTED;
- RunFree(sptr->listing);
- sptr->listing = NULL;
- sendto_one(sptr, rpl_str(RPL_LISTEND), me.name, sptr->name);
- if (parc < 2)
- return 0; /* Let LIST abort a listing. */
- }
-
- if (parc < 2) /* No arguments given to /LIST ? */
- {
-#ifdef DEFAULT_LIST_PARAM
- static char *defparv[MAXPARA + 1];
- static int defparc = 0;
- static char lp[] = DEFAULT_LIST_PARAM;
- int i;
-
- if (!defparc)
- {
- char *s = lp, *t;
-
- defparc = 1;
- defparv[defparc++] = t = strtok(s, " ");
- while (t && defparc < MAXPARA)
- {
- if ((t = strtok(NULL, " ")))
- defparv[defparc++] = t;
- }
- }
- for (i = 1; i < defparc; i++)
- parv[i] = defparv[i];
- parv[i] = NULL;
- parc = defparc;
-#endif /* DEFAULT_LIST_PARAM */
- }
-
- /* Decode command */
- for (param = 1; !show_usage && parv[param]; param++)
- {
- char *p = parv[param];
- do
- {
- int is_time = 0;
- switch (*p)
- {
- case 'T':
- case 't':
- is_time++;
- args.topic_limits = 1;
- /* Fall through */
- case 'C':
- case 'c':
- is_time++;
- p++;
- if (*p != '<' && *p != '>')
- {
- show_usage = 1;
- break;
- }
- /* Fall through */
- case '<':
- case '>':
- {
- p++;
- if (!isDigit(*p))
- show_usage = 1;
- else
- {
- if (is_time)
- {
- time_t val = atoi(p);
- if (p[-1] == '<')
- {
- if (val < 80000000) /* Toggle UTC/offset */
- {
- /*
- * Demands that
- * 'TStime() - chptr->creationtime < val * 60'
- * Which equals
- * 'chptr->creationtime > TStime() - val * 60'
- */
- if (is_time == 1)
- args.min_time = TStime() - val * 60;
- else
- args.min_topic_time = TStime() - val * 60;
- }
- else if (is_time == 1) /* Creation time in UTC was entered */
- args.max_time = val;
- else /* Topic time in UTC was entered */
- args.max_topic_time = val;
- }
- else if (val < 80000000)
- {
- if (is_time == 1)
- args.max_time = TStime() - val * 60;
- else
- args.max_topic_time = TStime() - val * 60;
- }
- else if (is_time == 1)
- args.min_time = val;
- else
- args.min_topic_time = val;
- }
- else if (p[-1] == '<')
- args.max_users = atoi(p);
- else
- args.min_users = atoi(p);
- if ((p = strchr(p, ',')))
- p++;
- }
- break;
- }
- default:
- if (!IsChannelName(p))
- {
- show_usage = 1;
- break;
- }
- if (parc != 2) /* Don't allow a mixture of channels with <,> */
- show_usage = 1;
- show_channels = 1;
- p = NULL;
- break;
- }
- }
- while (!show_usage && p); /* p points after comma, or is NULL */
- }
-
- if (show_usage)
- {
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- "Usage: \002/QUOTE LIST\002 \037parameters\037");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- "Where \037parameters\037 is a space or comma seperated "
- "list of one or more of:");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- " \002<\002\037max_users\037 ; Show all channels with less "
- "than \037max_users\037.");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- " \002>\002\037min_users\037 ; Show all channels with more "
- "than \037min_users\037.");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- " \002C<\002\037max_minutes\037 ; Channels that exist less "
- "than \037max_minutes\037.");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- " \002C>\002\037min_minutes\037 ; Channels that exist more "
- "than \037min_minutes\037.");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- " \002T<\002\037max_minutes\037 ; Channels with a topic last "
- "set less than \037max_minutes\037 ago.");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- " \002T>\002\037min_minutes\037 ; Channels with a topic last "
- "set more than \037min_minutes\037 ago.");
- sendto_one(sptr, rpl_str(RPL_LISTUSAGE), me.name, parv[0],
- "Example: LIST <3,>1,C<10,T>0 ; 2 users, younger than 10 min., "
- "topic set.");
- return 0;
- }
+ unsigned int len;
+ int is_local;
- sendto_one(sptr, rpl_str(RPL_LISTSTART), me.name, parv[0]);
+ assert(0 != jbuf);
- if (!show_channels)
- {
- if (args.max_users > args.min_users + 1 && args.max_time > args.min_time &&
- args.max_topic_time > args.min_topic_time) /* Sanity check */
- {
- if ((sptr->listing = (aListingArgs *)RunMalloc(sizeof(aListingArgs))))
- {
- memcpy(sptr->listing, &args, sizeof(aListingArgs));
- if ((sptr->listing->chptr = channel))
- {
- int m = channel->mode.mode & MODE_LISTED;
- list_next_channels(sptr, 64);
- channel->mode.mode |= m;
- return 0;
- }
- RunFree(sptr->listing);
- sptr->listing = NULL;
- }
- }
- sendto_one(sptr, rpl_str(RPL_LISTEND), me.name, parv[0]);
- return 0;
+ if (!chan) {
+ sendcmdto_serv_butone(jbuf->jb_source, CMD_JOIN, jbuf->jb_connect, "0");
+ return;
}
- for (; (name = strtoken(&p, parv[1], ",")); parv[1] = NULL)
- {
- chptr = FindChannel(name);
- if (chptr && ShowChannel(sptr, chptr) && sptr->user)
- sendto_one(sptr, rpl_str(RPL_LIST), me.name, parv[0],
- ShowChannel(sptr, chptr) ? chptr->chname : "*",
- chptr->users - number_of_zombies(chptr), chptr->topic);
- }
+ is_local = IsLocalChannel(chan->chname);
- sendto_one(sptr, rpl_str(RPL_LISTEND), me.name, parv[0]);
- return 0;
+ if (jbuf->jb_type == JOINBUF_TYPE_PART ||
+ jbuf->jb_type == JOINBUF_TYPE_PARTALL) {
+ struct Membership *member = find_member_link(chan, jbuf->jb_source);
+ if (IsUserParting(member))
+ return;
+ SetUserParting(member);
+
+ /* Send notification to channel */
+ if (!(flags & (CHFL_ZOMBIE | CHFL_DELAYED)))
+ sendcmdto_channel_butserv_butone(jbuf->jb_source, CMD_PART, chan, NULL, 0,
+ (flags & CHFL_BANNED || !jbuf->jb_comment) ?
+ ":%H" : "%H :%s", chan, jbuf->jb_comment);
+ else if (MyUser(jbuf->jb_source))
+ sendcmdto_one(jbuf->jb_source, CMD_PART, jbuf->jb_source,
+ (flags & CHFL_BANNED || !jbuf->jb_comment) ?
+ ":%H" : "%H :%s", chan, jbuf->jb_comment);
+ /* XXX: Shouldn't we send a PART here anyway? */
+ /* to users on the channel? Why? From their POV, the user isn't on
+ * the channel anymore anyway. We don't send to servers until below,
+ * when we gang all the channel parts together. Note that this is
+ * exactly the same logic, albeit somewhat more concise, as was in
+ * the original m_part.c */
+
+ if (jbuf->jb_type == JOINBUF_TYPE_PARTALL ||
+ is_local) /* got to remove user here */
+ remove_user_from_channel(jbuf->jb_source, chan);
+ } else {
+ int oplevel = !chan->mode.apass[0] ? MAXOPLEVEL
+ : (flags & CHFL_CHANNEL_MANAGER) ? 0
+ : 1;
+ /* Add user to channel */
+ if ((chan->mode.mode & MODE_DELJOINS) && !(flags & CHFL_VOICED_OR_OPPED))
+ add_user_to_channel(chan, jbuf->jb_source, flags | CHFL_DELAYED, oplevel);
+ else
+ add_user_to_channel(chan, jbuf->jb_source, flags, oplevel);
+
+ /* send JOIN notification to all servers (CREATE is sent later). */
+ if (jbuf->jb_type != JOINBUF_TYPE_CREATE && !is_local)
+ sendcmdto_serv_butone(jbuf->jb_source, CMD_JOIN, jbuf->jb_connect,
+ "%H %Tu", chan, chan->creationtime);
+
+ if (!((chan->mode.mode & MODE_DELJOINS) && !(flags & CHFL_VOICED_OR_OPPED))) {
+ /* Send the notification to the channel */
+ sendcmdto_channel_butserv_butone(jbuf->jb_source, CMD_JOIN, chan, NULL, 0, "%H", chan);
+
+ /* send an op, too, if needed */
+ if (flags & CHFL_CHANOP && (oplevel < MAXOPLEVEL || !MyUser(jbuf->jb_source)))
+ sendcmdto_channel_butserv_butone((chan->mode.apass[0] ? &his : jbuf->jb_source),
+ CMD_MODE, chan, NULL, 0, "%H +o %C",
+ chan, jbuf->jb_source);
+ } else if (MyUser(jbuf->jb_source))
+ sendcmdto_one(jbuf->jb_source, CMD_JOIN, jbuf->jb_source, ":%H", chan);
+ }
+
+ if (jbuf->jb_type == JOINBUF_TYPE_PARTALL ||
+ jbuf->jb_type == JOINBUF_TYPE_JOIN || is_local)
+ return; /* don't send to remote */
+
+ /* figure out if channel name will cause buffer to be overflowed */
+ len = chan ? strlen(chan->chname) + 1 : 2;
+ if (jbuf->jb_strlen + len > BUFSIZE)
+ joinbuf_flush(jbuf);
+
+ /* add channel to list of channels to send and update counts */
+ jbuf->jb_channels[jbuf->jb_count++] = chan;
+ jbuf->jb_strlen += len;
+
+ /* if we've used up all slots, flush */
+ if (jbuf->jb_count >= MAXJOINARGS)
+ joinbuf_flush(jbuf);
}
/*
- * m_names - Added by Jto 27 Apr 1989
- *
- * parv[0] = sender prefix
- * parv[1] = channel
+ * Flush the channel list to remote servers
*/
-int m_names(aClient *cptr, aClient *sptr, int parc, char *parv[])
+int
+joinbuf_flush(struct JoinBuf *jbuf)
{
- Reg1 aChannel *chptr;
- Reg2 aClient *c2ptr;
- Reg3 Link *lp;
- aChannel *ch2ptr = NULL;
- int idx, flag, len, mlen;
- char *s, *para = parc > 1 ? parv[1] : NULL;
-
- if (parc > 2 && hunt_server(1, cptr, sptr, ":%s NAMES %s %s", 2, parc, parv))
- return 0;
-
- mlen = strlen(me.name) + 10 + strlen(sptr->name);
-
- if (!BadPtr(para))
- {
- s = strchr(para, ',');
- if (s)
- {
- parv[1] = ++s;
- m_names(cptr, sptr, parc, parv);
- }
- clean_channelname(para);
- ch2ptr = FindChannel(para);
- }
-
- /*
- * First, do all visible channels (public and the one user self is)
- */
-
- for (chptr = channel; chptr; chptr = chptr->nextch)
- {
- if ((chptr != ch2ptr) && !BadPtr(para))
- continue; /* -- wanted a specific channel */
- if (!MyConnect(sptr) && BadPtr(para))
- continue;
-#ifndef GODMODE
- if (!ShowChannel(sptr, chptr))
- continue; /* -- users on this are not listed */
-#endif
-
- /* Find users on same channel (defined by chptr) */
-
- strcpy(buf, "* ");
- len = strlen(chptr->chname);
- strcpy(buf + 2, chptr->chname);
- strcpy(buf + 2 + len, " :");
+ char chanlist[BUFSIZE];
+ int chanlist_i = 0;
+ int i;
+
+ if (!jbuf->jb_count || jbuf->jb_type == JOINBUF_TYPE_PARTALL ||
+ jbuf->jb_type == JOINBUF_TYPE_JOIN)
+ return 0; /* no joins to process */
+
+ for (i = 0; i < jbuf->jb_count; i++) { /* build channel list */
+ build_string(chanlist, &chanlist_i,
+ jbuf->jb_channels[i] ? jbuf->jb_channels[i]->chname : "0", 0,
+ i == 0 ? '\0' : ',');
+ if (JOINBUF_TYPE_PART == jbuf->jb_type)
+ /* Remove user from channel */
+ remove_user_from_channel(jbuf->jb_source, jbuf->jb_channels[i]);
+
+ jbuf->jb_channels[i] = 0; /* mark slot empty */
+ }
+
+ jbuf->jb_count = 0; /* reset base counters */
+ jbuf->jb_strlen = ((jbuf->jb_type == JOINBUF_TYPE_PART ?
+ STARTJOINLEN : STARTCREATELEN) +
+ (jbuf->jb_comment ? strlen(jbuf->jb_comment) + 2 : 0));
+
+ /* and send the appropriate command */
+ switch (jbuf->jb_type) {
+ case JOINBUF_TYPE_CREATE:
+ sendcmdto_serv_butone(jbuf->jb_source, CMD_CREATE, jbuf->jb_connect,
+ "%s %Tu", chanlist, jbuf->jb_create);
+ break;
- if (PubChannel(chptr))
- *buf = '=';
- else if (SecretChannel(chptr))
- *buf = '@';
- idx = len + 4;
- flag = 1;
- for (lp = chptr->members; lp; lp = lp->next)
- {
- c2ptr = lp->value.cptr;
-#ifndef GODMODE
- if (sptr != c2ptr && IsInvisible(c2ptr) && !IsMember(sptr, chptr))
- continue;
-#endif
- if (lp->flags & CHFL_ZOMBIE)
- {
- if (lp->value.cptr != sptr)
- continue;
- else
- {
- strcat(buf, "!");
- idx++;
- }
- }
- else if (lp->flags & CHFL_CHANOP)
- {
- strcat(buf, "@");
- idx++;
- }
- else if (lp->flags & CHFL_VOICE)
- {
- strcat(buf, "+");
- idx++;
- }
- strcat(buf, c2ptr->name);
- strcat(buf, " ");
- idx += strlen(c2ptr->name) + 1;
- flag = 1;
-#ifdef GODMODE
- {
- char yxx[6];
- sprintf_irc(yxx, "%s%s", NumNick(c2ptr));
- if (c2ptr != findNUser(yxx))
- MyCoreDump;
- sprintf_irc(buf + strlen(buf), "(%s) ", yxx);
- idx += 6;
- }
- if (mlen + idx + NICKLEN + 11 > BUFSIZE)
-#else
- if (mlen + idx + NICKLEN + 5 > BUFSIZE)
-#endif
- /* space, modifier, nick, \r \n \0 */
- {
- sendto_one(sptr, rpl_str(RPL_NAMREPLY), me.name, parv[0], buf);
- strcpy(buf, "* ");
- strncpy(buf + 2, chptr->chname, len + 1);
- buf[len + 2] = 0;
- strcat(buf, " :");
- if (PubChannel(chptr))
- *buf = '=';
- else if (SecretChannel(chptr))
- *buf = '@';
- idx = len + 4;
- flag = 0;
- }
- }
- if (flag)
- sendto_one(sptr, rpl_str(RPL_NAMREPLY), me.name, parv[0], buf);
- }
- if (!BadPtr(para))
- {
- sendto_one(sptr, rpl_str(RPL_ENDOFNAMES), me.name, parv[0],
- ch2ptr ? ch2ptr->chname : para);
- return (1);
+ case JOINBUF_TYPE_PART:
+ sendcmdto_serv_butone(jbuf->jb_source, CMD_PART, jbuf->jb_connect,
+ jbuf->jb_comment ? "%s :%s" : "%s", chanlist,
+ jbuf->jb_comment);
+ break;
}
- /* Second, do all non-public, non-secret channels in one big sweep */
+ return 0;
+}
- strcpy(buf, "* * :");
- idx = 5;
- flag = 0;
- for (c2ptr = client; c2ptr; c2ptr = c2ptr->next)
- {
- aChannel *ch3ptr;
- int showflag = 0, secret = 0;
+/* Returns TRUE (1) if client is invited, FALSE (0) if not */
+int IsInvited(struct Client* cptr, const void* chptr)
+{
+ struct SLink *lp;
-#ifndef GODMODE
- if (!IsUser(c2ptr) || (sptr != c2ptr && IsInvisible(c2ptr)))
-#else
- if (!IsUser(c2ptr))
-#endif
- continue;
- lp = c2ptr->user->channel;
- /*
- * Don't show a client if they are on a secret channel or when
- * they are on a channel sptr is on since they have already
- * been show earlier. -avalon
- */
- while (lp)
- {
- ch3ptr = lp->value.chptr;
-#ifndef GODMODE
- if (PubChannel(ch3ptr) || IsMember(sptr, ch3ptr))
-#endif
- showflag = 1;
- if (SecretChannel(ch3ptr))
- secret = 1;
- lp = lp->next;
- }
- if (showflag) /* Have we already shown them ? */
- continue;
-#ifndef GODMODE
- if (secret) /* On any secret channels ? */
- continue;
-#endif
- strcat(buf, c2ptr->name);
- strcat(buf, " ");
- idx += strlen(c2ptr->name) + 1;
- flag = 1;
-#ifdef GODMODE
- {
- char yxx[6];
- sprintf_irc(yxx, "%s%s", NumNick(c2ptr));
- if (c2ptr != findNUser(yxx))
- MyCoreDump;
- sprintf_irc(buf + strlen(buf), "(%s) ", yxx);
- idx += 6;
- }
-#endif
-#ifdef GODMODE
- if (mlen + idx + NICKLEN + 9 > BUFSIZE)
-#else
- if (mlen + idx + NICKLEN + 3 > BUFSIZE) /* space, \r\n\0 */
-#endif
- {
- sendto_one(sptr, rpl_str(RPL_NAMREPLY), me.name, parv[0], buf);
- strcpy(buf, "* * :");
- idx = 5;
- flag = 0;
- }
- }
- if (flag)
- sendto_one(sptr, rpl_str(RPL_NAMREPLY), me.name, parv[0], buf);
- sendto_one(sptr, rpl_str(RPL_ENDOFNAMES), me.name, parv[0], "*");
- return (1);
+ for (lp = (cli_user(cptr))->invited; lp; lp = lp->next)
+ if (lp->value.chptr == chptr)
+ return 1;
+ return 0;
}
-void send_user_joins(aClient *cptr, aClient *user)
+/* RevealDelayedJoin: sends a join for a hidden user */
+
+void RevealDelayedJoin(struct Membership *member)
{
- Reg1 Link *lp;
- Reg2 aChannel *chptr;
- Reg3 int cnt = 0, len = 0, clen;
- char *mask;
+ ClearDelayedJoin(member);
+ sendcmdto_channel_butserv_butone(member->user, CMD_JOIN, member->channel, member->user, 0, ":%H",
+ member->channel);
+ CheckDelayedJoins(member->channel);
+}
- *buf = ':';
- strcpy(buf + 1, user->name);
- strcat(buf, " JOIN ");
- len = strlen(user->name) + 7;
+/* CheckDelayedJoins: checks and clear +d if necessary */
- for (lp = user->user->channel; lp; lp = lp->next)
- {
- chptr = lp->value.chptr;
- if ((mask = strchr(chptr->chname, ':')))
- if (match(++mask, cptr->name))
- continue;
- if (*chptr->chname == '&')
- continue;
- if (is_zombie(user, chptr))
- continue;
- clen = strlen(chptr->chname);
- if (clen + 1 + len > BUFSIZE - 3)
- {
- if (cnt)
- {
- buf[len - 1] = '\0';
- sendto_one(cptr, "%s", buf);
- }
- *buf = ':';
- strcpy(buf + 1, user->name);
- strcat(buf, " JOIN ");
- len = strlen(user->name) + 7;
- cnt = 0;
- }
- strcpy(buf + len, chptr->chname);
- cnt++;
- len += clen;
- if (lp->next)
- {
- len++;
- strcat(buf, ",");
- }
+void CheckDelayedJoins(struct Channel *chan)
+{
+ if ((chan->mode.mode & MODE_WASDELJOINS) && !find_delayed_joins(chan)) {
+ chan->mode.mode &= ~MODE_WASDELJOINS;
+ sendcmdto_channel_butserv_butone(&his, CMD_MODE, chan, NULL, 0,
+ "%H -d", chan);
}
- if (*buf && cnt)
- sendto_one(cptr, "%s", buf);
-
- return;
}
-/*
- * send_hack_notice()
- *
- * parc & parv[] are the same as that of the calling function:
- * mtype == 1 is from m_mode, 2 is from m_create, 3 is from m_kick.
- *
- * This function prepares sendbuf with the server notices and wallops
- * to be sent for all hacks. -Ghostwolf 18-May-97
+/** Send a join for the user if (s)he is a hidden member of the channel.
*/
-
-static void send_hack_notice(aClient *cptr, aClient *sptr, int parc,
- char *parv[], int badop, int mtype)
+void RevealDelayedJoinIfNeeded(struct Client *sptr, struct Channel *chptr)
{
- aChannel *chptr;
- static char params[MODEBUFLEN];
- int i = 3;
- chptr = FindChannel(parv[1]);
- *params = '\0';
-
- if (Protocol(cptr) < 10) /* We don't get numeric nicks from P09 */
- { /* servers, so this can be sent "As Is" */
- if (mtype == 1)
- {
- while (i < parc)
- {
- strcat(params, " ");
- strcat(params, parv[i++]);
- }
- sprintf_irc(sendbuf,
- ":%s NOTICE * :*** Notice -- %sHACK(%d): %s MODE %s %s%s [" TIME_T_FMT
- "]", me.name, (badop == 3) ? "BOUNCE or " : "", badop, parv[0],
- parv[1], parv[2], params, chptr->creationtime);
- sendbufto_op_mask((badop == 3) ? SNO_HACK3 : (badop ==
- 4) ? SNO_HACK4 : SNO_HACK2);
-
- if ((IsServer(sptr)) && (badop == 2))
- {
- sprintf_irc(sendbuf, ":%s DESYNCH :HACK: %s MODE %s %s%s",
- me.name, parv[0], parv[1], parv[2], params);
- sendbufto_serv_butone(cptr);
- }
- }
- else if (mtype == 3)
- {
- sprintf_irc(sendbuf,
- ":%s NOTICE * :*** Notice -- HACK: %s KICK %s %s :%s",
- me.name, sptr->name, parv[1], parv[2], parv[3]);
- sendbufto_op_mask(SNO_HACK4);
- }
- }
- else
- {
- /* P10 servers require numeric nick conversion before sending. */
- switch (mtype)
- {
- case 1: /* Convert nicks for MODE HACKs here */
- {
- char *mode = parv[2];
- while (i < parc)
- {
- while (*mode && *mode != 'o' && *mode != 'v')
- ++mode;
- strcat(params, " ");
- if (*mode == 'o' || *mode == 'v')
- {
- register aClient *acptr;
- if ((acptr = findNUser(parv[i])) != NULL) /* Convert nicks here */
- strcat(params, acptr->name);
- else
- {
- strcat(params, "<");
- strcat(params, parv[i]);
- strcat(params, ">");
- }
- }
- else /* If it isn't a numnick, send it 'as is' */
- strcat(params, parv[i]);
- i++;
- }
- sprintf_irc(sendbuf,
- ":%s NOTICE * :*** Notice -- %sHACK(%d): %s MODE %s %s%s ["
- TIME_T_FMT "]", me.name, (badop == 3) ? "BOUNCE or " : "", badop,
- parv[0], parv[1], parv[2], params, chptr->creationtime);
- sendbufto_op_mask((badop == 3) ? SNO_HACK3 : (badop ==
- 4) ? SNO_HACK4 : SNO_HACK2);
-
- if ((IsServer(sptr)) && (badop == 2))
- {
- sprintf_irc(sendbuf, ":%s DESYNCH :HACK: %s MODE %s %s%s",
- me.name, parv[0], parv[1], parv[2], params);
- sendbufto_serv_butone(cptr);
- }
- break;
- }
- case 2: /* No conversion is needed for CREATE; the only numnick is sptr */
- {
- sendto_serv_butone(cptr, ":%s DESYNCH :HACK: %s CREATE %s %s",
- me.name, sptr->name, chptr->chname, parv[2]);
- sendto_op_mask(SNO_HACK2, "HACK(2): %s CREATE %s %s",
- sptr->name, chptr->chname, parv[2]);
- break;
- }
- case 3: /* Convert nick in KICK message */
- {
- aClient *acptr;
- if ((acptr = findNUser(parv[2])) != NULL) /* attempt to convert nick */
- sprintf_irc(sendbuf,
- ":%s NOTICE * :*** Notice -- HACK: %s KICK %s %s :%s",
- me.name, sptr->name, parv[1], acptr->name, parv[3]);
- else /* if conversion fails, send it 'as is' in <>'s */
- sprintf_irc(sendbuf,
- ":%s NOTICE * :*** Notice -- HACK: %s KICK %s <%s> :%s",
- me.name, sptr->name, parv[1], parv[2], parv[3]);
- sendbufto_op_mask(SNO_HACK4);
- break;
- }
- }
- }
+ struct Membership *member = find_member_link(chptr, sptr);
+ if (member && IsDelayedJoin(member))
+ RevealDelayedJoin(member);
}
projects / ircu2.10.12-pk.git / blobdiff