ircd/m_notice.c

   1 /*
   2  * IRC - Internet Relay Chat, ircd/m_notice.c
   3  * Copyright (C) 1990 Jarkko Oikarinen and
   4  *                    University of Oulu, Computing Center
   5  *
   6  * See file AUTHORS in IRC package for additional names of
   7  * the programmers.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 1, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  * $Id: m_notice.c,v 1.10 2004/12/11 05:13:48 klmitch Exp $
  24  */
  25
  26 /*
  27  * m_functions execute protocol messages on this server:
  28  *
  29  *    cptr    is always NON-NULL, pointing to a *LOCAL* client
  30  *            structure (with an open socket connected!). This
  31  *            identifies the physical socket where the message
  32  *            originated (or which caused the m_function to be
  33  *            executed--some m_functions may call others...).
  34  *
  35  *    sptr    is the source of the message, defined by the
  36  *            prefix part of the message if present. If not
  37  *            or prefix not found, then sptr==cptr.
  38  *
  39  *            (!IsServer(cptr)) => (cptr == sptr), because
  40  *            prefixes are taken *only* from servers...
  41  *
  42  *            (IsServer(cptr))
  43  *                    (sptr == cptr) => the message didn't
  44  *                    have the prefix.
  45  *
  46  *                    (sptr != cptr && IsServer(sptr) means
  47  *                    the prefix specified servername. (?)
  48  *
  49  *                    (sptr != cptr && !IsServer(sptr) means
  50  *                    that message originated from a remote
  51  *                    user (not local).
  52  *
  53  *            combining
  54  *
  55  *            (!IsServer(sptr)) means that, sptr can safely
  56  *            taken as defining the target structure of the
  57  *            message in this server.
  58  *
  59  *    *Always* true (if 'parse' and others are working correct):
  60  *
  61  *    1)      sptr->from == cptr  (note: cptr->from == cptr)
  62  *
  63  *    2)      MyConnect(sptr) <=> sptr == cptr (e.g. sptr
  64  *            *cannot* be a local connection, unless it's
  65  *            actually cptr!). [MyConnect(x) should probably
  66  *            be defined as (x == x->from) --msa ]
  67  *
  68  *    parc    number of variable parameter strings (if zero,
  69  *            parv is allowed to be NULL)
  70  *
  71  *    parv    a NULL terminated list of parameter pointers,
  72  *
  73  *                    parv[0], sender (prefix string), if not present
  74  *                            this points to an empty string.
  75  *                    parv[1]...parv[parc-1]
  76  *                            pointers to additional parameters
  77  *                    parv[parc] == NULL, *always*
  78  *
  79  *            note:   it is guaranteed that parv[0]..parv[parc-1] are all
  80  *                    non-NULL pointers.
  81  */
  82 #include "config.h"
  83
  84 #include "client.h"
  85 #include "ircd_chattr.h"
  86 #include "ircd_log.h"
  87 #include "ircd_relay.h"
  88 #include "ircd_reply.h"
  89 #include "ircd_string.h"
  90 #include "match.h"
  91 #include "msg.h"
  92 #include "numeric.h"
  93 #include "send.h"
  94
  95 /* #include <assert.h> -- Now using assert in ircd_log.h */
  96 #include <string.h>
  97
  98 #if !defined(XXX_BOGUS_TEMP_HACK)
  99 #include "handlers.h"
 100 #endif
 101
 102 /*
 103  * m_notice - generic message handler
 104  */
 105 int m_notice(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 106 {
 107   char*           name;
 108   char*           server;
 109   int             i;
 110   int             count;
 111   char*           vector[MAXTARGETS];
 112
 113   assert(0 != cptr);
 114   assert(cptr == sptr);
 115
 116   ClrFlag(sptr, FLAG_TS8);
 117
 118   if (parc < 2 || EmptyString(parv[1]))
 119     return send_reply(sptr, ERR_NORECIPIENT, MSG_NOTICE);
 120
 121   if (parc < 3 || EmptyString(parv[parc - 1]))
 122     return send_reply(sptr, ERR_NOTEXTTOSEND);
 123
 124   if (parv[1][0] == '@' && IsChannelPrefix(parv[1][1])) {
 125     parv[1]++;                        /* Get rid of '@' */
 126     return m_wallchops(cptr, sptr, parc, parv);
 127   }
 128
 129   count = unique_name_vector(parv[1], ',', vector, MAXTARGETS);
 130
 131   for (i = 0; i < count; ++i) {
 132     name = vector[i];
 133     /*
 134      * channel msg?
 135      */
 136     if (IsChannelPrefix(*name)) {
 137       relay_channel_notice(sptr, name, parv[parc - 1]);
 138     }
 139     /*
 140      * we have to check for the '@' at least once no matter what we do
 141      * handle it first so we don't have to do it twice
 142      */
 143     else if ((server = strchr(name, '@')))
 144       relay_directed_notice(sptr, name, server, parv[parc - 1]);
 145     else
 146       relay_private_notice(sptr, name, parv[parc - 1]);
 147   }
 148   return 0;
 149 }
 150
 151 /*
 152  * ms_notice - server message handler
 153  */
 154 int ms_notice(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 155 {
 156   char* name;
 157   char* server;
 158
 159   ClrFlag(sptr, FLAG_TS8);
 160
 161   if (parc < 3) {
 162     /*
 163      * we can't deliver it, sending an error back is pointless
 164      */
 165     return protocol_violation(sptr,"Not enough params for NOTICE");
 166   }
 167   name = parv[1];
 168   /*
 169    * channel msg?
 170    */
 171   if (IsChannelPrefix(*name)) {
 172     server_relay_channel_notice(sptr, name, parv[parc - 1]);
 173   }
 174   /*
 175    * coming from another server, we have to check this here
 176    */
 177   else if ('$' == *name && IsOper(sptr)) {
 178     server_relay_masked_notice(sptr, name, parv[parc - 1]);
 179   }
 180   else if ((server = strchr(name, '@'))) {
 181     /*
 182      * XXX - can't get away with not doing everything
 183      * relay_directed_notice has to do
 184      */
 185     relay_directed_notice(sptr, name, server, parv[parc - 1]);
 186   }
 187   else {
 188     server_relay_private_notice(sptr, name, parv[parc - 1]);
 189   }
 190   return 0;
 191 }
 192
 193 /*
 194  * mo_notice - oper message handler
 195  */
 196 int mo_notice(struct Client* cptr, struct Client* sptr, int parc, char* parv[])
 197 {
 198   char*           name;
 199   char*           server;
 200   int             i;
 201   int             count;
 202   char*           vector[MAXTARGETS];
 203   assert(0 != cptr);
 204   assert(cptr == sptr);
 205
 206   ClrFlag(sptr, FLAG_TS8);
 207
 208   if (parc < 2 || EmptyString(parv[1]))
 209     return send_reply(sptr, ERR_NORECIPIENT, MSG_NOTICE);
 210
 211   if (parc < 3 || EmptyString(parv[parc - 1]))
 212     return send_reply(sptr, ERR_NOTEXTTOSEND);
 213
 214   if (parv[1][0] == '@' && IsChannelPrefix(parv[1][1])) {
 215     parv[1]++;                        /* Get rid of '@' */
 216     return m_wallchops(cptr, sptr, parc, parv);
 217   }
 218
 219   count = unique_name_vector(parv[1], ',', vector, MAXTARGETS);
 220
 221   for (i = 0; i < count; ++i) {
 222     name = vector[i];
 223     /*
 224      * channel msg?
 225      */
 226     if (IsChannelPrefix(*name))
 227       relay_channel_notice(sptr, name, parv[parc - 1]);
 228
 229     else if (*name == '$')
 230       relay_masked_notice(sptr, name, parv[parc - 1]);
 231
 232     else if ((server = strchr(name, '@')))
 233       relay_directed_notice(sptr, name, server, parv[parc - 1]);
 234
 235     else
 236       relay_private_notice(sptr, name, parv[parc - 1]);
 237   }
 238   return 0;
 239 }