X-Git-Url: http://git.pk910.de/?p=ircu2.10.12-pk.git;a=blobdiff_plain;f=ircd%2Fm_whois.c;fp=ircd%2Fm_whois.c;h=01c9db55db3d1d8311a6b89f76bc40ffa79a9930;hp=0000000000000000000000000000000000000000;hb=0400a5a6479398d82526785c18c0df8bc8b92dce;hpb=d17e10da972ce5776c60b4c317267c6abe0e1ead

diff --git a/ircd/m_whois.c b/ircd/m_whois.c
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+++ b/ircd/m_whois.c
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+/*
+ * IRC - Internet Relay Chat, ircd/m_whois.c
+ * Copyright (C) 1990 Jarkko Oikarinen and
+ *                    University of Oulu, Computing Center
+ *
+ * See file AUTHORS in IRC package for additional names of
+ * the programmers.
+ *
+ * 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)
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ */
+
+/*
+ * 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.
+ */
+#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 "match.h"
+#include "msg.h"
+#include "numeric.h"
+#include "numnicks.h"
+#include "s_user.h"
+#include "send.h"
+#include "whocmds.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <string.h>
+
+/*
+ * 2000-07-01: Isomer
+ *  * Rewritten to make this understandable
+ *  * You can no longer /whois unregistered clients.
+ *  
+ *
+ * General rules:
+ *  /whois nick always shows the nick.
+ *  /whois wild* shows the nick if:
+ *   * they aren't +i and aren't on any channels.
+ *   * they are on a common channel.
+ *   * they aren't +i and are on a public channel. (not +p and not +s)
+ *   * they aren't +i and are on a private channel. (+p but not +s)
+ *  Or to look at it another way (I think):
+ *   * +i users are only shown if your on a common channel.
+ *   * users on +s channels only aren't shown.
+ *
+ *  whois doesn't show what channels a +k client is on, for the reason that
+ *  /whois X or /whois W floods a user off the server. :)
+ *
+ * nb: if the code and this comment disagree, the codes right and I screwed
+ *     up.
+ */
+
+/*
+ * Send whois information for acptr to sptr
+ */
+static void do_whois(struct Client* sptr, struct Client *acptr, int parc)
+{
+  struct Client *a2cptr=0;
+  struct Channel *chptr=0;
+  int mlen;
+  int len;
+  static char buf[512];
+  
+  const struct User* user = cli_user(acptr);
+  const char* name = (!*(cli_name(acptr))) ? "?" : cli_name(acptr);  
+  a2cptr = feature_bool(FEAT_HIS_WHOIS_SERVERNAME) && !IsAnOper(sptr)
+      && sptr != acptr ? &his : user->server;
+  assert(user);
+  send_reply(sptr, RPL_WHOISUSER, name, user->username, user->host,
+		   cli_info(acptr));
+
+  /* Display the channels this user is on. */
+  if (!IsChannelService(acptr))
+  {
+    struct Membership* chan;
+    mlen = strlen(cli_name(&me)) + strlen(cli_name(sptr)) + 12 + strlen(name);
+    len = 0;
+    *buf = '\0';
+    for (chan = user->channel; chan; chan = chan->next_channel)
+    {
+       chptr = chan->channel;
+       
+       if (!ShowChannel(sptr, chptr)
+           && !(IsOper(sptr) && IsLocalChannel(chptr->chname)))
+          continue;
+
+       if (acptr != sptr && IsZombie(chan))
+          continue;
+
+       /* Don't show local channels when HIS is defined, unless it's a
+	* remote WHOIS --ULtimaTe_
+	*/
+       if (IsLocalChannel(chptr->chname) && (acptr != sptr) && (parc == 2)
+           && feature_bool(FEAT_HIS_WHOIS_LOCALCHAN) && !IsAnOper(sptr))
+	  continue;
+
+       if (len+strlen(chptr->chname) + mlen > BUFSIZE - 5)
+       {
+          send_reply(sptr, SND_EXPLICIT | RPL_WHOISCHANNELS, "%s :%s", name, buf);
+          *buf = '\0';
+          len = 0;
+       }
+       if (IsDeaf(acptr))
+         *(buf + len++) = '-';
+       if (!ShowChannel(sptr, chptr))
+         *(buf + len++) = '*';
+       if (IsDelayedJoin(chan) && (sptr != acptr))
+         *(buf + len++) = '<';
+       else if (IsChanOp(chan))
+         *(buf + len++) = '@';
+       else if (HasVoice(chan))
+         *(buf + len++) = '+';
+       else if (IsZombie(chan))
+         *(buf + len++) = '!';
+       if (len)
+          *(buf + len) = '\0';
+       strcpy(buf + len, chptr->chname);
+       len += strlen(chptr->chname);
+       strcat(buf + len, " ");
+       len++;
+     }
+     if (buf[0] != '\0')
+        send_reply(sptr, RPL_WHOISCHANNELS, name, buf);
+  }
+
+  send_reply(sptr, RPL_WHOISSERVER, name, cli_name(a2cptr),
+             cli_info(a2cptr));
+
+  if (user)
+  {
+    if (user->away)
+       send_reply(sptr, RPL_AWAY, name, user->away);
+
+    if (SeeOper(sptr,acptr))
+       send_reply(sptr, RPL_WHOISOPERATOR, name);
+
+    if (IsAccount(acptr))
+      send_reply(sptr, RPL_WHOISACCOUNT, name, user->account);
+
+    if (HasHiddenHost(acptr) && (IsAnOper(sptr) || acptr == sptr))
+      send_reply(sptr, RPL_WHOISACTUALLY, name, user->username,
+                 user->realhost, ircd_ntoa(&cli_ip(acptr)));
+
+    /* Hint: if your looking to add more flags to a user, eg +h, here's
+     *       probably a good place to add them :)
+     */
+
+    if (MyConnect(acptr) && (!feature_bool(FEAT_HIS_WHOIS_IDLETIME) ||
+                             (sptr == acptr || IsAnOper(sptr) || parc >= 3)))
+       send_reply(sptr, RPL_WHOISIDLE, name, CurrentTime - user->last,
+                  cli_firsttime(acptr));
+  }
+}
+
+/*
+ * Search and return as many people as matched by the wild 'nick'.
+ * returns the number of people found (or, obviously, 0, if none where
+ * found).
+ */
+static int do_wilds(struct Client* sptr, char *nick, int count, int parc)
+{
+  struct Client *acptr; /* Current client we're considering */
+  struct User *user; 	/* the user portion of the client */
+  struct Membership* chan; 
+  int invis; 		/* does +i apply? */
+  int member;		/* Is this user on any channels? */
+  int showperson;       /* Should we show this person? */
+  int found = 0 ;	/* How many were found? */
+  
+  /* Ech! This is hideous! */
+  for (acptr = GlobalClientList; (acptr = next_client(acptr, nick));
+      acptr = cli_next(acptr))
+  {
+    if (!IsRegistered(acptr)) 
+      continue;
+      
+    if (IsServer(acptr))
+      continue;
+    /*
+     * I'm always last :-) and acptr->next == 0!!
+     *
+     * Isomer: Does this strike anyone else as being a horrible hideous
+     *         hack?
+     */
+    if (IsMe(acptr)) {
+      assert(!cli_next(acptr));
+      break;
+    }
+    
+    /*
+     * 'Rules' established for sending a WHOIS reply:
+     *
+     * - if wildcards are being used don't send a reply if
+     *   the querier isn't any common channels and the
+     *   client in question is invisible.
+     *
+     * - only send replies about common or public channels
+     *   the target user(s) are on;
+     */
+    user = cli_user(acptr);
+    assert(user);
+
+    invis = (acptr != sptr) && IsInvisible(acptr);
+    member = (user && user->channel) ? 1 : 0;
+    showperson = !invis && !member;
+    
+    /* Should we show this person now? */
+    if (showperson) {
+    	found++;
+    	do_whois(sptr, acptr, parc);
+    	if (count+found>MAX_WHOIS_LINES)
+    	  return found;
+    	continue;
+    }
+    
+    /* Step through the channels this user is on */
+    for (chan = user->channel; chan; chan = chan->next_channel)
+    {
+      struct Channel *chptr = chan->channel;
+
+      /* If this is a public channel, show the person */
+      if (!invis && PubChannel(chptr)) {
+        showperson = 1;
+        break;
+      }
+      
+      /* if this channel is +p and not +s, show them */
+      if (!invis && HiddenChannel(chptr) && !SecretChannel(chptr)) {
+          showperson = 1;
+          break;
+      }
+      
+      member = find_channel_member(sptr, chptr) ? 1 : 0;
+      if (invis && !member)
+        continue;
+
+      /* If sptr isn't really on this channel, skip it */
+      if (IsZombie(chan))
+        continue;
+       
+      /* Is this a common channel? */ 
+      if (member) {
+        showperson = 1;
+        break;
+      }
+    } /* of for (chan in channels) */
+    
+    /* Don't show this person */
+    if (!showperson)
+      continue;
+      
+    do_whois(sptr, acptr, parc);
+    found++;
+    if (count+found>MAX_WHOIS_LINES)
+       return found;  
+  } /* of global client list */
+  
+  return found;
+}
+
+/*
+ * m_whois - generic message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = nickname masklist
+ *
+ * or
+ *
+ * parv[1] = target server, or a nickname representing a server to target.
+ * parv[2] = nickname masklist
+ */
+int m_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+  char*           nick;
+  char*           tmp;
+  char*           p = 0;
+  int             found = 0;
+  int		  total = 0;
+  int             wildscount = 0;
+
+  if (parc < 2)
+  {
+    send_reply(sptr, ERR_NONICKNAMEGIVEN);
+    return 0;
+  }
+
+  if (parc > 2)
+  {
+    /* For convenience: Accept a nickname as first parameter, by replacing
+     * it with the correct servername - as is needed by hunt_server().
+     * This is the secret behind the /whois nick nick trick.
+     */
+    if (feature_int(FEAT_HIS_REMOTE))
+    {
+      /* If remote queries are disabled, then use the *second* parameter of
+       * of whois, so /whois nick nick still works.
+       */
+      if (!IsAnOper(sptr))
+      {
+        if (!FindUser(parv[2]))
+        {
+          send_reply(sptr, ERR_NOSUCHNICK, parv[2]);
+          send_reply(sptr, RPL_ENDOFWHOIS, parv[2]);
+          return 0;
+        }
+        parv[1] = parv[2];
+      }
+    }
+
+    if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
+       HUNTED_ISME)
+    return 0;
+    
+    parv[1] = parv[2];
+  }
+
+  for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
+  {
+    int wilds;
+
+    found = 0;
+    
+    collapse(nick);
+    
+    wilds = (strchr(nick, '?') || strchr(nick, '*'));
+    if (!wilds) {
+      struct Client *acptr = 0;
+      /* No wildcards */
+      acptr = FindUser(nick);
+      if (acptr && !IsServer(acptr)) {
+        do_whois(sptr, acptr, parc);
+        found = 1;
+      }
+    }
+    else /* wilds */
+    {
+      if (++wildscount > 3) {
+        send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
+        break;
+      }
+      found=do_wilds(sptr, nick, total, parc);
+    }
+
+    if (!found)
+      send_reply(sptr, ERR_NOSUCHNICK, nick);
+    total+=found;
+    if (total >= MAX_WHOIS_LINES) {
+      send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
+      break;
+    }
+    if (p)
+      p[-1] = ',';
+  } /* of tokenised parm[1] */
+  send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
+
+  return 0;
+}
+
+/*
+ * ms_whois - server message handler
+ *
+ * parv[0] = sender prefix
+ * parv[1] = nickname masklist
+ *
+ * or
+ *
+ * parv[1] = target server, or a nickname representing a server to target.
+ * parv[2] = nickname masklist
+ */
+int ms_whois(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
+{
+  char*           nick;
+  char*           tmp;
+  char*           p = 0;
+  int             found = 0;
+  int		  total = 0;
+
+  if (parc < 2)
+  {
+    send_reply(sptr, ERR_NONICKNAMEGIVEN);
+    return 0;
+  }
+
+  if (parc > 2)
+  {
+    if (hunt_server_cmd(sptr, CMD_WHOIS, cptr, 0, "%C :%s", 1, parc, parv) !=
+        HUNTED_ISME)
+      return 0;
+    parv[1] = parv[2];
+  }
+
+  total = 0;
+  
+  for (tmp = parv[1]; (nick = ircd_strtok(&p, tmp, ",")); tmp = 0)
+  {
+    struct Client *acptr = 0;
+
+    found = 0;
+    
+    collapse(nick);
+    
+
+    acptr = FindUser(nick);
+    if (acptr && !IsServer(acptr)) {
+      found++;
+      do_whois(sptr, acptr, parc);
+    }
+
+    if (!found)
+      send_reply(sptr, ERR_NOSUCHNICK, nick);
+      
+    total+=found;
+      
+    if (total >= MAX_WHOIS_LINES) {
+      send_reply(sptr, ERR_QUERYTOOLONG, parv[1]);
+      break;
+    }
+      
+    if (p)
+      p[-1] = ',';
+  } /* of tokenised parm[1] */
+  send_reply(sptr, RPL_ENDOFWHOIS, parv[1]);
+
+  return 0;
+}
+