X-Git-Url: http://git.pk910.de/?a=blobdiff_plain;f=ircd%2Fm_topic.c;h=4fb1a8f0d0384ecff1da3e9a2b6fc461f84e3738;hb=refs%2Fheads%2Fupstream-ssl;hp=300536eaa875c616571d7bd9bfc1cdd2e46b6316;hpb=80881d85337d93d70b67a505ae5178199b1b3155;p=ircu2.10.12-pk.git

diff --git a/ircd/m_topic.c b/ircd/m_topic.c
index 300536e..4fb1a8f 100644
--- a/ircd/m_topic.c
+++ b/ircd/m_topic.c
@@ -23,74 +23,14 @@
  * $Id$
  */
 
-/*
- * m_functions execute protocol messages on this server:
- *
- *    cptr    is always NON-NULL, pointing to a *LOCAL* client
- *            structure (with an open socket connected!). This
- *            identifies the physical socket where the message
- *            originated (or which caused the m_function to be
- *            executed--some m_functions may call others...).
- *
- *    sptr    is the source of the message, defined by the
- *            prefix part of the message if present. If not
- *            or prefix not found, then sptr==cptr.
- *
- *            (!IsServer(cptr)) => (cptr == sptr), because
- *            prefixes are taken *only* from servers...
- *
- *            (IsServer(cptr))
- *                    (sptr == cptr) => the message didn't
- *                    have the prefix.
- *
- *                    (sptr != cptr && IsServer(sptr) means
- *                    the prefix specified servername. (?)
- *
- *                    (sptr != cptr && !IsServer(sptr) means
- *                    that message originated from a remote
- *                    user (not local).
- *
- *            combining
- *
- *            (!IsServer(sptr)) means that, sptr can safely
- *            taken as defining the target structure of the
- *            message in this server.
- *
- *    *Always* true (if 'parse' and others are working correct):
- *
- *    1)      sptr->from == cptr  (note: cptr->from == cptr)
- *
- *    2)      MyConnect(sptr) <=> sptr == cptr (e.g. sptr
- *            *cannot* be a local connection, unless it's
- *            actually cptr!). [MyConnect(x) should probably
- *            be defined as (x == x->from) --msa ]
- *
- *    parc    number of variable parameter strings (if zero,
- *            parv is allowed to be NULL)
- *
- *    parv    a NULL terminated list of parameter pointers,
- *
- *                    parv[0], sender (prefix string), if not present
- *                            this points to an empty string.
- *                    parv[1]...parv[parc-1]
- *                            pointers to additional parameters
- *                    parv[parc] == NULL, *always*
- *
- *            note:   it is guaranteed that parv[0]..parv[parc-1] are all
- *                    non-NULL pointers.
- */
-#if 0
-/*
- * No need to include handlers.h here the signatures must match
- * and we don't need to force a rebuild of all the handlers everytime
- * we add a new one to the list. --Bleep
- */
-#include "handlers.h"
-#endif /* 0 */
+#include "config.h"
+
 #include "channel.h"
 #include "client.h"
 #include "hash.h"
 #include "ircd.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
 #include "ircd_reply.h"
 #include "ircd_string.h"
 #include "msg.h"
@@ -98,18 +38,26 @@
 #include "numnicks.h"
 #include "send.h"
 
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <stdlib.h> /* for atoi() */
 
-static void do_settopic(struct Client *sptr, struct Client *cptr, 
-		        struct Channel *chptr,char *topic)
+/** Set a channel topic or report an error.
+ * @param[in] sptr Original topic setter.
+ * @param[in] cptr Neighbor that sent the topic message.
+ * @param[in] chptr Channel to set topic on.
+ * @param[in] topic New topic.
+ * @param[in] ts Timestamp that topic was set (0 for current time).
+ */
+static void do_settopic(struct Client *sptr, struct Client *cptr,
+		        struct Channel *chptr, char *topic, time_t ts)
 {
+   struct Client *from;
    int newtopic;
-   /* if +n and not @'d, return an error and ignore the topic */
-   if ((chptr->mode.mode & MODE_TOPICLIMIT) != 0 && !is_chan_op(sptr, chptr)) 
-   {
-      send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
-      return;
-   }
+
+   if (feature_bool(FEAT_HIS_BANWHO) && IsServer(sptr))
+       from = &his;
+   else
+       from = sptr;
    /* Note if this is just a refresh of an old topic, and don't
     * send it to all the clients to save bandwidth.  We still send
     * it to other servers as they may have split and lost the topic.
@@ -117,29 +65,43 @@ static void do_settopic(struct Client *sptr, struct Client *cptr,
    newtopic=ircd_strncmp(chptr->topic,topic,TOPICLEN)!=0;
    /* setting a topic */
    ircd_strncpy(chptr->topic, topic, TOPICLEN);
-   ircd_strncpy(chptr->topic_nick, sptr->name, NICKLEN);
-   chptr->topic_time = CurrentTime;
-   /* Fixed in 2.10.11: Don't propergate local topics */
+   ircd_strncpy(chptr->topic_nick, cli_name(from), NICKLEN);
+   chptr->topic_time = ts ? ts : TStime();
+   /* Fixed in 2.10.11: Don't propagate local topics */
    if (!IsLocalChannel(chptr->chname))
-     sendcmdto_serv_butone(sptr, CMD_TOPIC, cptr, "%H :%s", chptr,
-		           chptr->topic);
+     sendcmdto_serv_butone(sptr, CMD_TOPIC, cptr, "%H %Tu %Tu :%s", chptr,
+		           chptr->creationtime, chptr->topic_time, chptr->topic);
    if (newtopic)
-      sendcmdto_channel_butserv(sptr, CMD_TOPIC, chptr, "%H :%s", chptr,
-				  chptr->topic);
+   {
+     struct Membership *member;
+
+     /* If the member is delayed-join, show them. */
+     member = find_channel_member(sptr, chptr);
+     if (member && IsDelayedJoin(member))
+       RevealDelayedJoin(member);
+
+     sendcmdto_channel_butserv_butone(from, CMD_TOPIC, chptr, NULL, 0,
+      				       "%H :%s", chptr, chptr->topic);
+   }
       /* if this is the same topic as before we send it to the person that
        * set it (so they knew it went through ok), but don't bother sending
        * it to everyone else on the channel to save bandwidth
        */
     else if (MyUser(sptr))
-      sendcmdto_one(sptr, CMD_TOPIC, sptr, "%H :%s", chptr, chptr->topic);   	
+      sendcmdto_one(sptr, CMD_TOPIC, sptr, "%H :%s", chptr, chptr->topic);
 }
 
-/*
- * m_topic - generic message handler
+/** Handle a local user's attempt to get or set a channel topic.
+ *
+ * \a parv has the following elements:
+ * \li \a parv[1] is the channel name
+ * \li \a parv[\a parc - 1] is the topic (if \a parc > 2)
  *
- * parv[0]        = sender prefix
- * parv[1]        = channel
- * parv[parc - 1] = topic (if parc > 2)
+ * See @ref m_functions for discussion of the arguments.
+ * @param[in] cptr Client that sent us the message.
+ * @param[in] sptr Original source of message.
+ * @param[in] parc Number of arguments.
+ * @param[in] parv Argument vector.
  */
 int m_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 {
@@ -167,14 +129,9 @@ int m_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
       send_reply(sptr, ERR_NOTONCHANNEL, chptr->chname);
       continue;
     }
-    /* Modeless Channels don't have topics */
-    if (IsModelessChannel(name))
-    {
-      send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
-      continue;
-    }
 
-    if (!topic)                 /* only asking for topic */
+    /* only asking for topic */
+    if (!topic)
     {
       if (chptr->topic[0] == '\0')
 	send_reply(sptr, RPL_NOTOPIC, chptr->chname);
@@ -185,23 +142,34 @@ int m_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 		   chptr->topic_time);
       }
     }
-    else 
-     do_settopic(sptr,cptr,chptr,topic);
+    else if ((chptr->mode.mode & MODE_TOPICLIMIT) && !is_chan_op(sptr, chptr))
+      send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
+    else if (!client_can_send_to_channel(sptr, chptr, 1))
+      send_reply(sptr, ERR_CANNOTSENDTOCHAN, chptr->chname);
+    else
+      do_settopic(sptr,cptr,chptr,topic,0);
   }
   return 0;
 }
 
-/*
- * ms_topic - generic message handler
- *
- * parv[0]        = sender prefix
- * parv[1]        = channel
- * parv[parc - 1] = topic
+/** Handle a remote user's attempt to set a channel topic.
+ * \a parv has the following elements:
+ * \li \a parv[1] is the channel name
+ * \li \a parv[2] is the channel creation timestamp (optional)
+ * \li \a parv[2] is the topic's timestamp (optional)
+ * \li \a parv[\a parc - 1] is the topic
+ *
+ * See @ref m_functions for discussion of the arguments.
+ * @param[in] cptr Client that sent us the message.
+ * @param[in] sptr Original source of message.
+ * @param[in] parc Number of arguments.
+ * @param[in] parv Argument vector.
  */
 int ms_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 {
   struct Channel *chptr;
   char *topic = 0, *name, *p = 0;
+  time_t ts = 0;
 
   if (parc < 3)
     return need_more_params(sptr, "TOPIC");
@@ -217,19 +185,23 @@ int ms_topic(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
     	send_reply(sptr,ERR_NOSUCHCHANNEL,name);
     	continue;
     }
-    /* Modeless Channels don't have topics */
-    if (IsModelessChannel(name))
-    {
-      protocol_violation(sptr,"Attempted to topic modeless channel");
-      send_reply(sptr, ERR_CHANOPRIVSNEEDED, chptr->chname);
-      continue;
-    }
+
     /* Ignore requests for topics from remote servers */
     if (IsLocalChannel(name) && !MyUser(sptr))
+    {
       protocol_violation(sptr,"Topic request");
       continue;
+    }
+
+    /* If existing channel is older or has newer topic, ignore */
+    if (parc > 3 && (ts = atoi(parv[2])) && chptr->creationtime < ts)
+      continue;
+
+    ts = 0; /* Default to the current time if no topic_time is passed. */
+    if (parc > 4 && (ts = atoi(parv[3])) && chptr->topic_time > ts)
+      continue;
 
-    do_settopic(sptr,cptr,chptr,topic);
+    do_settopic(sptr,cptr,chptr,topic, ts);
   }
   return 0;
 }