-/** add a ban to a channel
- *
- * `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.
- *
- * 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.
- *
- * 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!).
- *
- * @author Run
- * @param cptr Client adding the ban
- * @param chptr Channel to add the ban to
- * @param change True if adding a ban, false if old bans should just be flagged
- * @param firsttime Reset the next_overlapped_ban() iteration.
- * @returns
- * 0 if the ban was added
- * -2 if the ban already existed and was marked CHFL_BURST_BAN_WIPEOUT
- * -1 otherwise
- */
-int add_banid(struct Client *cptr, struct Channel *chptr, char *banid,
- int change, int firsttime)
-{
- struct SLink* ban;
- struct SLink** banp;
- int cnt = 0;
- int removed_bans = 0;
- int len = strlen(banid);
-
- if (firsttime)
- {
- next_ban = NULL;
- assert(0 == prev_ban);
- assert(0 == removed_bans_list);
- }
- if (MyUser(cptr))
- collapse(banid);
- for (banp = &chptr->banlist; *banp;)
- {
- 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))
- {
- struct SLink *tmp = *banp;
- if (change)
- {
- if (MyUser(cptr))
- {
- cnt--;
- len -= strlen(tmp->value.ban.banstr);
- }
- *banp = tmp->next;
- /* These will be sent to the user later as -b */
- tmp->next = removed_bans_list;
- removed_bans_list = tmp;
- removed_bans = 1;
- }
- 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;
- }
- else
- {
- if (firsttime)
- (*banp)->flags &= ~CHFL_BAN_OVERLAPPED;
- banp = &(*banp)->next;
- }
- }
- if (MyUser(cptr) && !removed_bans &&
- (len > (feature_int(FEAT_AVBANLEN) * feature_int(FEAT_MAXBANS)) ||
- (cnt >= feature_int(FEAT_MAXBANS))))
- {
- send_reply(cptr, ERR_BANLISTFULL, chptr->chname, banid);
- return -1;
- }
- if (change)
- {
- char* ip_start;
- struct Membership* member;
- ban = make_link();
- ban->next = chptr->banlist;
-
- ban->value.ban.banstr = (char*) MyMalloc(strlen(banid) + 1);
- assert(0 != ban->value.ban.banstr);
- strcpy(ban->value.ban.banstr, banid);
-
- if (IsServer(cptr) && feature_bool(FEAT_HIS_BANWHO))
- DupString(ban->value.ban.who, cli_name(&me));
- else
- DupString(ban->value.ban.who, cli_name(cptr));
- assert(0 != ban->value.ban.who);
-
- ban->value.ban.when = TStime();
- 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 (member = chptr->members; member; member = member->next_member)
- ClearBanValid(member); /* `ban' == channel member ! */
- }
- return 0;
-}
-
-/** return the next ban that is removed
- * @returns the next ban that is removed because of overlapping
- */
-struct SLink *next_removed_overlapped_ban(void)
-{
- struct SLink *tmp = removed_bans_list;
- if (prev_ban)
- {
- if (prev_ban->value.ban.banstr) /* Can be set to NULL in set_mode() */
- MyFree(prev_ban->value.ban.banstr);
- MyFree(prev_ban->value.ban.who);
- free_link(prev_ban);
- prev_ban = 0;
- }
- if (tmp)
- removed_bans_list = removed_bans_list->next;
- prev_ban = tmp;
- return tmp;
-}
-