ircd/m_account.c

   1 /*
   2  * IRC - Internet Relay Chat, ircd/m_account.c
   3  * Copyright (C) 2002 Kevin L. Mitchell <klmitch@mit.edu>
   4  *
   5  * See file AUTHORS in IRC package for additional names of
   6  * the programmers.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 1, or (at your option)
  11  * any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  * $Id: m_account.c,v 1.6 2004/12/11 05:13:46 klmitch Exp $
  23  */
  24
  25 /*
  26  * m_functions execute protocol messages on this server:
  27  *
  28  *    cptr    is always NON-NULL, pointing to a *LOCAL* client
  29  *            structure (with an open socket connected!). This
  30  *            identifies the physical socket where the message
  31  *            originated (or which caused the m_function to be
  32  *            executed--some m_functions may call others...).
  33  *
  34  *    sptr    is the source of the message, defined by the
  35  *            prefix part of the message if present. If not
  36  *            or prefix not found, then sptr==cptr.
  37  *
  38  *            (!IsServer(cptr)) => (cptr == sptr), because
  39  *            prefixes are taken *only* from servers...
  40  *
  41  *            (IsServer(cptr))
  42  *                    (sptr == cptr) => the message didn't
  43  *                    have the prefix.
  44  *
  45  *                    (sptr != cptr && IsServer(sptr) means
  46  *                    the prefix specified servername. (?)
  47  *
  48  *                    (sptr != cptr && !IsServer(sptr) means
  49  *                    that message originated from a remote
  50  *                    user (not local).
  51  *
  52  *            combining
  53  *
  54  *            (!IsServer(sptr)) means that, sptr can safely
  55  *            taken as defining the target structure of the
  56  *            message in this server.
  57  *
  58  *    *Always* true (if 'parse' and others are working correct):
  59  *
  60  *    1)      sptr->from == cptr  (note: cptr->from == cptr)
  61  *
  62  *    2)      MyConnect(sptr) <=> sptr == cptr (e.g. sptr
  63  *            *cannot* be a local connection, unless it's
  64  *            actually cptr!). [MyConnect(x) should probably
  65  *            be defined as (x == x->from) --msa ]
  66  *
  67  *    parc    number of variable parameter strings (if zero,
  68  *            parv is allowed to be NULL)
  69  *
  70  *    parv    a NULL terminated list of parameter pointers,
  71  *
  72  *                    parv[0], sender (prefix string), if not present
  73  *                            this points to an empty string.
  74  *                    parv[1]...parv[parc-1]
  75  *                            pointers to additional parameters
  76  *                    parv[parc] == NULL, *always*
  77  *
  78  *            note:   it is guaranteed that parv[0]..parv[parc-1] are all
  79  *                    non-NULL pointers.
  80  */
  81 #include "config.h"
  82
  83 #include "client.h"
  84 #include "ircd.h"
  85 #include "ircd_log.h"
  86 #include "ircd_reply.h"
  87 #include "ircd_string.h"
  88 #include "msg.h"
  89 #include "numnicks.h"
  90 #include "s_debug.h"
  91 #include "s_user.h"
  92 #include "send.h"
  93
  94 /* #include <assert.h> -- Now using assert in ircd_log.h */
  95 #include <stdlib.h>
  96 #include <string.h>
  97
  98 /*
  99  * ms_account - server message handler
 100  *
 101  * parv[0] = sender prefix
 102  * parv[1] = numeric of client to act on
 103  * parv[2] = account name (12 characters or less)
 104  */
 105 int ms_account(struct Client* cptr, struct Client* sptr, int parc,
 106                char* parv[])
 107 {
 108   struct Client *acptr;
 109
 110   if (parc < 3)
 111     return need_more_params(sptr, "ACCOUNT");
 112
 113   if (!IsServer(sptr))
 114     return protocol_violation(cptr, "ACCOUNT from non-server %s",
 115                               cli_name(sptr));
 116
 117   if (!(acptr = findNUser(parv[1])))
 118     return 0; /* Ignore ACCOUNT for a user that QUIT; probably crossed */
 119
 120   if (IsAccount(acptr))
 121     return protocol_violation(cptr, "ACCOUNT for already registered user %s "
 122                               "(%s -> %s)", cli_name(acptr),
 123                               cli_user(acptr)->account, parv[2]);
 124
 125   assert(0 == cli_user(acptr)->account[0]);
 126
 127   if (strlen(parv[2]) > ACCOUNTLEN)
 128     return protocol_violation(cptr,
 129                               "Received account (%s) longer than %d for %s; "
 130                               "ignoring.",
 131                               parv[2], ACCOUNTLEN, cli_name(acptr));
 132
 133   if (parc > 3) {
 134     cli_user(acptr)->acc_create = atoi(parv[3]);
 135     Debug((DEBUG_DEBUG, "Received timestamped account: account \"%s\", "
 136            "timestamp %Tu", parv[2], cli_user(acptr)->acc_create));
 137   }
 138
 139   ircd_strncpy(cli_user(acptr)->account, parv[2], ACCOUNTLEN);
 140   hide_hostmask(acptr, FLAG_ACCOUNT);
 141
 142   sendcmdto_serv_butone(sptr, CMD_ACCOUNT, cptr,
 143                         cli_user(acptr)->acc_create ? "%C %s %Tu" : "%C %s",
 144                         acptr, cli_user(acptr)->account,
 145                         cli_user(acptr)->acc_create);
 146
 147   return 0;
 148 }