1 files changed, 269 insertions, 0 deletions
diff --git a/modules/m_watch.c b/modules/m_watch.c
new file mode 100644
index 0000000..8e952f1
--- /dev/null
+++ b/modules/m_watch.c
@@ -0,0 +1,269 @@
+/*
+ *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
+ *  m_watch.c: Maintains notify list
+ *
+ *  Copyright (C) 1997 Jukka Santala (Donwulff)
+ *  Copyright (C) 2005 by the Hybrid Development Team.
+ *
+ *  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 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ *  USA
+ *
+ *  $Id$
+ */
+
+#include "stdinc.h"
+#include "client.h"
+#include "irc_string.h"
+#include "sprintf_irc.h"
+#include "ircd.h"
+#include "numeric.h"
+#include "conf.h"
+#include "send.h"
+#include "parse.h"
+#include "modules.h"
+#include "s_user.h"
+#include "watch.h"
+
+
+/*
+ * RPL_NOWON        - Online at the moment (Succesfully added to WATCH-list)
+ * RPL_NOWOFF       - Offline at the moment (Succesfully added to WATCH-list)
+ * RPL_WATCHOFF     - Succesfully removed from WATCH-list.
+ * ERR_TOOMANYWATCH - Take a guess :>  Too many WATCH entries.
+ */
+static void
+show_watch(struct Client *client_p, const char *name,
+           unsigned int rpl1, unsigned int rpl2)
+{
+  const struct Client *target_p = NULL;
+
+  if ((target_p = find_person(client_p, name)))
+    sendto_one(client_p, form_str(rpl1), me.name, client_p->name,
+               target_p->name, target_p->username,
+               target_p->host, target_p->tsinfo);
+  else
+    sendto_one(client_p, form_str(rpl2), me.name, client_p->name,
+               name, "*", "*", 0);
+}
+
+/*
+ * m_watch()
+ *
+ * parv[0] = sender prefix
+ * parv[1] = watch options
+ */
+static void
+m_watch(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
+{
+  dlink_node *ptr = NULL;
+  char *s = NULL;
+  char *p = NULL;
+  char *user;
+  char def[2] = "l";
+  unsigned int list_requested = 0;
+
+  /*
+   * Default to 'l' - list who's currently online
+   */
+  if (parc < 2)
+    parv[1] = def;
+
+  for (s = strtoken(&p, parv[1], ", "); s;
+       s = strtoken(&p,    NULL, ", "))
+  {
+    if ((user = strchr(s, '!')))
+      *user++ = '\0'; /* Not used */
+
+    /*
+     * Prefix of "+", they want to add a name to their WATCH
+     * list.
+     */
+    if (*s == '+')
+    {
+      if (*(s + 1) != '\0')
+      {
+        if (dlink_list_length(&source_p->localClient->watches) >=
+            ConfigFileEntry.max_watch)
+        {
+          sendto_one(source_p, form_str(ERR_TOOMANYWATCH), me.name,
+                     source_p->name, s + 1, ConfigFileEntry.max_watch);
+          continue;
+        }
+
+        watch_add_to_hash_table(s + 1, source_p);
+      }
+
+      show_watch(source_p, s + 1, RPL_NOWON, RPL_NOWOFF);
+      continue;
+    }
+
+    /*
+     * Prefix of "-", coward wants to remove somebody from their
+     * WATCH list.  So do it. :-)
+     */
+    if (*s == '-')
+    {
+      watch_del_from_hash_table(s + 1, source_p);
+      show_watch(source_p, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);
+      continue;
+    }
+
+    /*
+     * Fancy "C" or "c", they want to nuke their WATCH list and start
+     * over, so be it.
+     */
+    if (*s == 'C' || *s == 'c')
+    {
+      watch_del_watch_list(source_p);
+      continue;
+    }
+
+    /*
+     * Now comes the fun stuff, "S" or "s" returns a status report of
+     * their WATCH list.  I imagine this could be CPU intensive if
+     * it's done alot, perhaps an auto-lag on this?
+     */
+    if (*s == 'S' || *s == 's')
+    {
+      char buf[IRCD_BUFSIZE] = { '\0' };
+      const struct Watch *anptr = NULL;
+      unsigned int count = 0;
+
+      if (list_requested & 0x1)
+        continue;
+
+      list_requested |= 0x1;
+
+      /*
+       * Send a list of how many users they have on their WATCH list
+       * and how many WATCH lists they are on.
+       */
+      if ((anptr = watch_find_hash(source_p->name)))
+        count = dlink_list_length(&anptr->watched_by);
+
+      sendto_one(source_p, form_str(RPL_WATCHSTAT),
+                 me.name, source_p->name,
+                 dlink_list_length(&source_p->localClient->watches), count);
+
+      /*
+       * Send a list of everybody in their WATCH list.  Be careful
+       * not to buffer overflow.
+       */
+      if ((ptr = source_p->localClient->watches.head) == NULL)
+      {
+        sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
+                   me.name, source_p->name, *s);
+        continue;
+      }
+
+      anptr = ptr->data;
+      strlcpy(buf, anptr->nick, sizeof(buf));
+
+      count = strlen(source_p->name) + strlen(me.name) + 10 +
+              strlen(buf);
+
+      while ((ptr = ptr->next))
+      {
+        anptr = ptr->data;
+
+        if (count + strlen(anptr->nick) + 1 > IRCD_BUFSIZE - 2)
+        {
+          sendto_one(source_p, form_str(RPL_WATCHLIST),
+                     me.name, source_p->name, buf);
+          buf[0] = '\0';
+          count = strlen(source_p->name) + strlen(me.name) + 10;
+        }
+
+        strcat(buf, " ");
+        strcat(buf, anptr->nick);
+        count += (strlen(anptr->nick) + 1);
+      }
+
+      sendto_one(source_p, form_str(RPL_WATCHLIST),
+                 me.name, source_p->name, buf);
+      sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
+                 me.name, source_p->name, *s);
+      continue;
+    }
+
+    /*
+     * Well that was fun, NOT.  Now they want a list of everybody in
+     * their WATCH list AND if they are online or offline? Sheesh,
+     * greedy aren't we?
+     */
+    if (*s == 'L' || *s == 'l')
+    {
+      const struct Client *target_p = NULL;
+
+      if (list_requested & 0x2)
+        continue;
+
+      list_requested |= 0x2;
+
+      DLINK_FOREACH(ptr, source_p->localClient->watches.head)
+      {
+        const struct Watch *anptr = ptr->data;
+
+        if ((target_p = find_person(source_p, anptr->nick)))
+          sendto_one(source_p, form_str(RPL_NOWON), me.name, source_p->name,
+                     target_p->name, target_p->username,
+                     target_p->host, target_p->tsinfo);
+        /*
+         * But actually, only show them offline if it's a capital
+         * 'L' (full list wanted).
+         */
+        else if (*s == 'L')
+          sendto_one(source_p, form_str(RPL_NOWOFF), me.name,
+                     source_p->name, anptr->nick,
+                     "*", "*", anptr->lasttime);
+      }
+
+      sendto_one(source_p, form_str(RPL_ENDOFWATCHLIST),
+                 me.name, source_p->name, *s);
+      continue;
+    }
+
+    /* Hmm.. unknown prefix character.. Ignore it. :-) */
+  }
+}
+
+static struct Message watch_msgtab = {
+  "WATCH", 0, 0, 0, 1, MFLG_SLOW, 0,
+  { m_unregistered, m_watch, m_ignore, m_ignore, m_watch, m_ignore }
+};
+
+static void
+module_init(void)
+{
+  mod_add_cmd(&watch_msgtab);
+  add_isupport("WATCH", NULL, ConfigFileEntry.max_watch);
+}
+
+static void
+module_exit(void)
+{
+  mod_del_cmd(&watch_msgtab);
+  delete_isupport("WATCH");
+}
+
+struct module module_entry = {
+  .node    = { NULL, NULL, NULL },
+  .name    = NULL,
+  .version = "$Revision$",
+  .handle  = NULL,
+  .modinit = module_init,
+  .modexit = module_exit,
+  .flags   = 0
+};