*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 1, or (at your option)
+ * the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
+ */
+/** @file
+ * @brief Implementation of Gline manipulation functions.
+ * @version $Id$
*/
#include "config.h"
#include "s_stats.h"
#include "send.h"
#include "struct.h"
-#include "support.h"
#include "msg.h"
#include "numnicks.h"
#include "numeric.h"
-#include "sys.h" /* FALSE bleah */
#include "whocmds.h"
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
-#include <arpa/inet.h> /* for inet_ntoa */
-#define CHECK_APPROVED 0 /* Mask is acceptable */
-#define CHECK_OVERRIDABLE 1 /* Mask is acceptable, but not by default */
-#define CHECK_REJECTED 2 /* Mask is totally unacceptable */
+#define CHECK_APPROVED 0 /**< Mask is acceptable */
+#define CHECK_OVERRIDABLE 1 /**< Mask is acceptable, but not by default */
+#define CHECK_REJECTED 2 /**< Mask is totally unacceptable */
-#define MASK_WILD_0 0x01 /* Wildcards in the last position */
-#define MASK_WILD_1 0x02 /* Wildcards in the next-to-last position */
+#define MASK_WILD_0 0x01 /**< Wildcards in the last position */
+#define MASK_WILD_1 0x02 /**< Wildcards in the next-to-last position */
-#define MASK_WILD_MASK 0x03 /* Mask out the positional wildcards */
+#define MASK_WILD_MASK 0x03 /**< Mask out the positional wildcards */
-#define MASK_WILDS 0x10 /* Mask contains wildcards */
-#define MASK_IP 0x20 /* Mask is an IP address */
-#define MASK_HALT 0x40 /* Finished processing mask */
+#define MASK_WILDS 0x10 /**< Mask contains wildcards */
+#define MASK_IP 0x20 /**< Mask is an IP address */
+#define MASK_HALT 0x40 /**< Finished processing mask */
+/** List of user G-lines. */
struct Gline* GlobalGlineList = 0;
+/** List of BadChan G-lines. */
struct Gline* BadChanGlineList = 0;
+/** Find canonical user and host for a string.
+ * If \a userhost starts with '$', assign \a userhost to *user_p and NULL to *host_p.
+ * Otherwise, if \a userhost contains '@', assign the earlier part of it to *user_p and the rest to *host_p.
+ * Otherwise, assign \a def_user to *user_p and \a userhost to *host_p.
+ *
+ * @param[in] userhost Input string from user.
+ * @param[out] user_p Gets pointer to user (or channel/realname) part of hostmask.
+ * @param[out] host_p Gets point to host part of hostmask (may be assigned NULL).
+ * @param[in] def_user Default value for user part.
+ */
static void
canon_userhost(char *userhost, char **user_p, char **host_p, char *def_user)
{
}
}
+/** Create a Gline structure.
+ * @param[in] user User part of mask.
+ * @param[in] host Host part of mask (NULL if not applicable).
+ * @param[in] reason Reason for G-line.
+ * @param[in] expire Expiration timestamp.
+ * @param[in] lastmod Last modification timestamp.
+ * @param[in] flags Bitwise combination of GLINE_* bits.
+ * @return Newly allocated G-line.
+ */
static struct Gline *
make_gline(char *user, char *host, char *reason, time_t expire, time_t lastmod,
unsigned int flags)
else
gline->gl_host = NULL;
- if (*user != '$' && check_if_ipmask(host)) { /* mark if it's an IP mask */
- int c_class;
- char ipname[16];
- int ad[4] = { 0 };
- int bits2 = 0;
- char *ch;
- int seenwild;
- int badmask=0;
-
- /* Sanity check for dodgy IP masks
- * Any mask featuring a digit after a wildcard will
- * not behave as expected. */
- for (seenwild=0,ch=host;*ch;ch++) {
- if (*ch=='*' || *ch=='?')
- seenwild=1;
- if (IsDigit(*ch) && seenwild) {
- badmask=1;
- break;
- }
- }
-
- if (badmask) {
- /* It's bad - let's make it match 0.0.0.0/32 */
- gline->bits=32;
- gline->ipnum.s_addr=0;
- } else {
- c_class = sscanf(host,"%d.%d.%d.%d/%d",
- &ad[0],&ad[1],&ad[2],&ad[3], &bits2);
- if (c_class!=5)
- gline->bits=c_class*8;
- else
- gline->bits=bits2;
- ircd_snprintf(0, ipname, sizeof(ipname), "%d.%d.%d.%d", ad[0], ad[1],
- ad[2], ad[3]);
- gline->ipnum.s_addr = inet_addr(ipname);
- }
- Debug((DEBUG_DEBUG,"IP gline: %08x/%i",gline->ipnum.s_addr,gline->bits));
+ if (*user != '$' && ipmask_parse(host, &gline->gl_addr, &gline->gl_bits))
gline->gl_flags |= GLINE_IPMASK;
- }
if (after) {
gline->gl_next = after->gl_next;
return gline;
}
+/** Check local clients against a new G-line.
+ * If the G-line is inactive or a badchan, return immediately.
+ * Otherwise, if any users match it, disconnect them.
+ * @param[in] cptr Peer connect that sent the G-line.
+ * @param[in] sptr Client that originated the G-line.
+ * @param[in] gline New G-line to check.
+ * @return Zero, unless \a sptr G-lined himself, in which case CPTR_KILLED.
+ */
static int
do_gline(struct Client *cptr, struct Client *sptr, struct Gline *gline)
{
struct Client *acptr;
int fd, retval = 0, tval;
+ if (GlineIsBadChan(gline)) /* no action taken on badchan glines */
+ return 0;
if (!GlineIsActive(gline)) /* no action taken on inactive glines */
return 0;
if ((acptr = LocalClientArray[fd])) {
if (!cli_user(acptr))
continue;
-
+
if (GlineIsRealName(gline)) { /* Realname Gline */
Debug((DEBUG_DEBUG,"Realname Gline: %s %s",(cli_info(acptr)),
gline->gl_user+2));
continue;
Debug((DEBUG_DEBUG,"Matched!"));
} else { /* Host/IP gline */
- if (cli_user(acptr)->username &&
+ if (cli_user(acptr)->username &&
match(gline->gl_user, (cli_user(acptr))->username) != 0)
- continue;
-
+ continue;
+
if (GlineIsIpMask(gline)) {
- Debug((DEBUG_DEBUG,"IP gline: %08x %08x/%i",(cli_ip(cptr)).s_addr,gline->ipnum.s_addr,gline->bits));
- if (((cli_ip(acptr)).s_addr & NETMASK(gline->bits)) != gline->ipnum.s_addr)
+ if (!ipmask_check(&cli_ip(acptr), &gline->gl_addr, gline->gl_bits))
continue;
}
else {
/* let the ops know about it */
sendto_opmask_butone(0, SNO_GLINE, "G-line active for %s",
- get_client_name(acptr, TRUE));
+ get_client_name(acptr, SHOW_IP));
/* and get rid of him */
if ((tval = exit_client_msg(cptr, acptr, &me, "G-lined (%s)",
return retval;
}
-/*
- * This routine implements the mask checking applied to local
- * G-lines. Basically, host masks must have a minimum of two non-wild
- * domain fields, and IP masks must have a minimum of 16 bits. If the
- * mask has even one wild-card, OVERRIDABLE is returned, assuming the
- * other check doesn't fail.
+/**
+ * Implements the mask checking applied to local G-lines.
+ * Basically, host masks must have a minimum of two non-wild domain
+ * fields, and IP masks must have a minimum of 16 bits. If the mask
+ * has even one wild-card, OVERRIDABLE is returned, assuming the other
+ * check doesn't fail.
+ * @param[in] mask G-line mask to check.
+ * @return One of CHECK_REJECTED, CHECK_OVERRIDABLE, or CHECK_APPROVED.
*/
static int
gline_checkmask(char *mask)
++mask;
ipmask = strtoul(mask, &mask, 10);
- if (*mask || dots != 3 || ipmask > 32 || /* sanity-check to date */
- (flags & (MASK_WILDS | MASK_IP)) != MASK_IP)
- return CHECK_REJECTED; /* how strange... */
-
- if (ipmask < 32) /* it's a masked address; mark wilds */
- flags |= MASK_WILDS;
+ /* sanity-check to date */
+ if (*mask || (flags & (MASK_WILDS | MASK_IP)) != MASK_IP)
+ return CHECK_REJECTED;
+ if (!dots) {
+ if (ipmask > 128)
+ return CHECK_REJECTED;
+ if (ipmask < 128)
+ flags |= MASK_WILDS;
+ } else {
+ if (dots != 3 || ipmask > 32)
+ return CHECK_REJECTED;
+ if (ipmask < 32)
+ flags |= MASK_WILDS;
+ }
flags |= MASK_HALT; /* Halt the ipmask calculation */
-
break; /* get out of the loop */
- } else if (!IsDigit(*mask)) {
+ } else if (!IsIP6Char(*mask)) {
flags &= ~MASK_IP; /* not an IP anymore! */
ipmask = 0;
}
return flags & MASK_WILDS ? CHECK_OVERRIDABLE : CHECK_APPROVED;
}
+/** Forward a G-line to other servers.
+ * @param[in] cptr Client that sent us the G-line.
+ * @param[in] sptr Client that originated the G-line.
+ * @param[in] gline G-line to forward.
+ * @return Zero.
+ */
int
gline_propagate(struct Client *cptr, struct Client *sptr, struct Gline *gline)
{
return 0;
}
-int
+/** Create a new G-line and add it to global lists.
+ * \a userhost may be in one of four forms:
+ * \li A channel name, to add a BadChan.
+ * \li A string starting with $R and followed by a mask to match against their realname.
+ * \li A user\@IP mask (user\@ part optional) to create an IP-based ban.
+ * \li A user\@host mask (user\@ part optional) to create a hostname ban.
+ *
+ * @param[in] cptr Client that sent us the G-line.
+ * @param[in] sptr Client that originated the G-line.
+ * @param[in] userhost Text mask for the G-line.
+ * @param[in] reason Reason for G-line.
+ * @param[in] expire Duration of G-line in seconds.
+ * @param[in] lastmod Last modification time of G-line.
+ * @param[in] flags Bitwise combination of GLINE_* flags.
+ * @return Zero or CPTR_KILLED, depending on whether \a sptr is suicidal.
+ */
+int
gline_add(struct Client *cptr, struct Client *sptr, char *userhost,
char *reason, time_t expire, time_t lastmod, unsigned int flags)
{
assert(0 != userhost);
assert(0 != reason);
- /* NO_OLD_GLINE allows *@#channel to work correctly */
- if (*userhost == '#' || *userhost == '&'
-# ifndef NO_OLD_GLINE
- || ((userhost[2] == '#' || userhost[2] == '&') && (userhost[1] == '@'))
-# endif /* OLD_GLINE */
- ) {
+ if (*userhost == '#' || *userhost == '&') {
if ((flags & GLINE_LOCAL) && !HasPriv(sptr, PRIV_LOCAL_BADCHAN))
return send_reply(sptr, ERR_NOPRIVILEGES);
flags |= GLINE_BADCHAN;
-# ifndef NO_OLD_GLINE
- if ((userhost[2] == '#' || userhost[2] == '&') && (userhost[1] == '@'))
- user = userhost + 2;
- else
-# endif /* OLD_GLINE */
- user = userhost;
+ user = userhost;
host = 0;
- } else if (*userhost == '$'
-# ifndef NO_OLD_GLINE
- || userhost[2] == '$'
-# endif /* OLD_GLINE */
- ) {
+ } else if (*userhost == '$') {
switch (*userhost == '$' ? userhost[1] : userhost[3]) {
case 'R': flags |= GLINE_REALNAME; break;
default:
/* uh, what to do here? */
/* The answer, my dear Watson, is we throw a protocol_violation()
-- hikari */
- return protocol_violation(sptr,"%s has been smoking the sweet leaf and sent me a whacky gline",cli_name(sptr));
+ if (IsServer(cptr))
+ return protocol_violation(sptr,"%s has been smoking the sweet leaf and sent me a whacky gline",cli_name(sptr));
+ else {
+ sendto_opmask_butone(NULL, SNO_GLINE, "%s has been smoking the sweet leaf and sent me a whacky gline", cli_name(sptr));
+ return 0;
+ }
break;
}
user = (*userhost =='$' ? userhost : userhost+2);
/* and log it */
log_write(LS_GLINE, L_INFO, LOG_NOSNOTICE,
- "%#C adding %s %s for %s, expiring at %Tu: %s", sptr,
+ "%#C adding %s %s for %s%s%s, expiring at %Tu: %s", sptr,
flags & GLINE_LOCAL ? "local" : "global",
- flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", userhost,
+ flags & GLINE_BADCHAN ? "BADCHAN" : "GLINE", user,
+ flags & (GLINE_BADCHAN|GLINE_REALNAME) ? "" : "@",
+ flags & (GLINE_BADCHAN|GLINE_REALNAME) ? "" : host,
expire + TSoffset, reason);
/* make the gline */
gline_propagate(cptr, sptr, agline);
- if (GlineIsBadChan(agline))
- return 0;
-
return do_gline(cptr, sptr, agline); /* knock off users if necessary */
}
+/** Activate a currently inactive G-line.
+ * @param[in] cptr Peer that told us to activate the G-line.
+ * @param[in] sptr Client that originally thought it was a good idea.
+ * @param[in] gline G-line to activate.
+ * @param[in] lastmod New value for last modification timestamp.
+ * @param[in] flags 0 if the activation should be propagated, GLINE_LOCAL if not.
+ * @return Zero, unless \a sptr had a death wish (in which case CPTR_KILLED).
+ */
int
gline_activate(struct Client *cptr, struct Client *sptr, struct Gline *gline,
time_t lastmod, unsigned int flags)
if (!(flags & GLINE_LOCAL)) /* don't propagate local changes */
gline_propagate(cptr, sptr, gline);
- return GlineIsBadChan(gline) ? 0 : do_gline(cptr, sptr, gline);
+ return do_gline(cptr, sptr, gline);
}
+/** Deactivate a G-line.
+ * @param[in] cptr Peer that gave us the message.
+ * @param[in] sptr Client that initiated the deactivation.
+ * @param[in] gline G-line to deactivate.
+ * @param[in] lastmod New value for G-line last modification timestamp.
+ * @param[in] flags GLINE_LOCAL to only deactivate locally, 0 to propagate.
+ * @return Zero.
+ */
int
gline_deactivate(struct Client *cptr, struct Client *sptr, struct Gline *gline,
time_t lastmod, unsigned int flags)
return 0;
}
+/** Find a G-line for a particular mask, guided by certain flags.
+ * Certain bits in \a flags are interpreted specially:
+ * <dl>
+ * <dt>GLINE_ANY</dt><dd>Search both BadChans and user G-lines.</dd>
+ * <dt>GLINE_BADCHAN</dt><dd>Search BadChans.</dd>
+ * <dt>GLINE_GLOBAL</dt><dd>Only match global G-lines.</dd>
+ * <dt>GLINE_LASTMOD</dt><dd>Only match G-lines with a last modification time.</dd>
+ * <dt>GLINE_EXACT</dt><dd>Require an exact match of G-line mask.</dd>
+ * <dt>anything else</dt><dd>Search user G-lines.</dd>
+ * </dl>
+ * @param[in] userhost Mask to search for.
+ * @param[in] flags Bitwise combination of GLINE_* flags.
+ * @return First matching G-line, or NULL if none are found.
+ */
struct Gline *
gline_find(char *userhost, unsigned int flags)
{
}
if ((flags & (GLINE_BADCHAN | GLINE_ANY)) == GLINE_BADCHAN ||
- *userhost == '#' || *userhost == '&'
-#ifndef NO_OLD_GLINE
- || userhost[2] == '#' || userhost[2] == '&'
-#endif /* NO_OLD_GLINE */
- )
+ *userhost == '#' || *userhost == '&')
return 0;
DupString(t_uh, userhost);
- canon_userhost(t_uh, &user, &host, 0);
-
- if (BadPtr(user))
- return 0;
+ canon_userhost(t_uh, &user, &host, "*");
for (gline = GlobalGlineList; gline; gline = sgline) {
sgline = gline->gl_next;
else if (flags & GLINE_EXACT) {
if (((gline->gl_host && host && ircd_strcmp(gline->gl_host, host) == 0)
|| (!gline->gl_host && !host)) &&
- ((!user && ircd_strcmp(gline->gl_user, "*") == 0) ||
- ircd_strcmp(gline->gl_user, user) == 0))
+ (ircd_strcmp(gline->gl_user, user) == 0))
break;
} else {
- if (((gline->gl_host && host && ircd_strcmp(gline->gl_host, host) == 0)
+ if (((gline->gl_host && host && match(gline->gl_host, host) == 0)
|| (!gline->gl_host && !host)) &&
- ((!user && ircd_strcmp(gline->gl_user, "*") == 0) ||
- match(gline->gl_user, user) == 0))
+ (match(gline->gl_user, user) == 0))
break;
}
}
return gline;
}
+/** Find a matching G-line for a user.
+ * @param[in] cptr Client to compare against.
+ * @param[in] flags Bitwise combination of GLINE_GLOBAL and/or
+ * GLINE_LASTMOD to limit matches.
+ * @return Matching G-line, or NULL if none are found.
+ */
struct Gline *
gline_lookup(struct Client *cptr, unsigned int flags)
{
gline_free(gline);
continue;
}
-
+
if ((flags & GLINE_GLOBAL && gline->gl_flags & GLINE_LOCAL) ||
(flags & GLINE_LASTMOD && !gline->gl_lastmod))
continue;
Debug((DEBUG_DEBUG,"realname gline: '%s' '%s'",gline->gl_user,cli_info(cptr)));
if (match(gline->gl_user+2, cli_info(cptr)) != 0)
continue;
- if (!GlineIsActive(gline))
- continue;
- return gline;
}
else {
if (match(gline->gl_user, (cli_user(cptr))->username) != 0)
continue;
-
+
if (GlineIsIpMask(gline)) {
- Debug((DEBUG_DEBUG,"IP gline: %08x %08x/%i",(cli_ip(cptr)).s_addr,gline->ipnum.s_addr,gline->bits));
- if (((cli_ip(cptr)).s_addr & NETMASK(gline->bits)) != gline->ipnum.s_addr)
+ if (!ipmask_check(&cli_ip(cptr), &gline->gl_addr, gline->gl_bits))
continue;
}
else {
- if (match(gline->gl_host, (cli_user(cptr))->realhost) != 0)
+ if (match(gline->gl_host, (cli_user(cptr))->realhost) != 0)
continue;
}
}
return 0;
}
+/** Delink and free a G-line.
+ * @param[in] gline G-line to free.
+ */
void
gline_free(struct Gline *gline)
{
MyFree(gline);
}
+/** Burst all known global G-lines to another server.
+ * @param[in] cptr Destination of burst.
+ */
void
gline_burst(struct Client *cptr)
{
}
}
+/** Send a G-line to another server.
+ * @param[in] cptr Who to inform of the G-line.
+ * @param[in] gline G-line to send.
+ * @return Zero.
+ */
int
gline_resend(struct Client *cptr, struct Gline *gline)
{
return 0;
}
+/** Display one or all G-lines to a user.
+ * If \a userhost is not NULL, only send the first matching G-line.
+ * Otherwise send the whole list.
+ * @param[in] sptr User asking for G-line list.
+ * @param[in] userhost G-line mask to search for (or NULL).
+ * @return Zero.
+ */
int
gline_list(struct Client *sptr, char *userhost)
{
return send_reply(sptr, RPL_ENDOFGLIST);
}
+/** Statistics callback to list G-lines.
+ * @param[in] sptr Client requesting statistics.
+ * @param[in] sd Stats descriptor for request (ignored).
+ * @param[in] param Extra parameter from user (ignored).
+ */
void
-gline_stats(struct Client *sptr, struct StatDesc *sd, int stat,
+gline_stats(struct Client *sptr, const struct StatDesc *sd,
char *param)
{
struct Gline *gline;
send_reply(sptr, RPL_STATSGLINE, 'G', gline->gl_user,
gline->gl_host ? "@" : "",
gline->gl_host ? gline->gl_host : "",
- gline->gl_expire + TSoffset, gline->gl_reason);
+ gline->gl_expire + TSoffset,
+ GlineIsActive(gline) ? '+' : '-',
+ gline->gl_reason);
}
}
+/** Calculate memory used by G-lines.
+ * @param[out] gl_size Number of bytes used by G-lines.
+ * @return Number of G-lines in use.
+ */
int
gline_memory_count(size_t *gl_size)
{
struct Gline *gline;
unsigned int gl = 0;
-
+
for (gline = GlobalGlineList; gline; gline = gline->gl_next)
{
gl++;
}
return gl;
}
-
projects / ircu2.10.12-pk.git / blobdiff