ircd/ircd_reply.c

   1 /*
   2  * IRC - Internet Relay Chat, ircd/m_proto.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 /** @file
  24  * @brief Implementation of functions to send common replies to users.
  25  * @version $Id: ircd_reply.c,v 1.22.2.1 2007/02/04 04:16:16 entrope Exp $
  26  */
  27 #include "config.h"
  28
  29 #include "ircd_reply.h"
  30 #include "client.h"
  31 #include "ircd.h"
  32 #include "ircd_log.h"
  33 #include "ircd_snprintf.h"
  34 #include "msg.h"
  35 #include "msgq.h"
  36 #include "numeric.h"
  37 #include "s_conf.h"
  38 #include "s_debug.h"
  39 #include "send.h"
  40
  41 /* #include <assert.h> -- Now using assert in ircd_log.h */
  42 #include <string.h>
  43
  44 /** Report a protocol violation warning to anyone listening.  This can
  45  * be easily used to clean up the last couple of parts of the code.
  46  * @param[in] cptr Client that violated the protocol.
  47  * @param[in] pattern Description of how the protocol was violated.
  48  * @return Zero.
  49  */
  50 int protocol_violation(struct Client* cptr, const char* pattern, ...)
  51 {
  52   struct VarData vd;
  53   char message[BUFSIZE];
  54
  55   assert(pattern);
  56   assert(cptr);
  57
  58   vd.vd_format = pattern;
  59   va_start(vd.vd_args, pattern);
  60   ircd_snprintf(NULL, message, sizeof(message),
  61                 "Protocol Violation from %s: %v", cli_name(cptr), &vd);
  62   va_end(vd.vd_args);
  63
  64   sendwallto_group_butone(&me, WALL_DESYNCH, NULL, "%s", message);
  65   return 0;
  66 }
  67
  68 /** Inform a client that they need to provide more parameters.
  69  * @param[in] cptr Taciturn client.
  70  * @param[in] cmd Command name.
  71  * @return Zero.
  72  */
  73 int need_more_params(struct Client* cptr, const char* cmd)
  74 {
  75   send_reply(cptr, ERR_NEEDMOREPARAMS, cmd);
  76   return 0;
  77 }
  78
  79 /** Send a generic reply to a user.
  80  * @param[in] to Client that wants a reply.
  81  * @param[in] reply Numeric of message to send.
  82  * @return Zero.
  83  */
  84 int send_reply(struct Client *to, int reply, ...)
  85 {
  86   struct VarData vd;
  87   struct MsgBuf *mb;
  88   const struct Numeric *num;
  89
  90   assert(0 != to);
  91   assert(0 != reply);
  92
  93   num = get_error_numeric(reply & ~SND_EXPLICIT); /* get reply... */
  94
  95   va_start(vd.vd_args, reply);
  96
  97   if (reply & SND_EXPLICIT) /* get right pattern */
  98     vd.vd_format = (const char *) va_arg(vd.vd_args, char *);
  99   else
 100     vd.vd_format = num->format;
 101
 102   assert(0 != vd.vd_format);
 103
 104   /* build buffer */
 105   mb = msgq_make(cli_from(to), "%:#C %s %C %v", &me, num->str, to, &vd);
 106
 107   va_end(vd.vd_args);
 108
 109   /* send it to the user */
 110   send_buffer(to, mb, 0);
 111
 112   msgq_clean(mb);
 113
 114   return 0; /* convenience return */
 115 }
 116
 117
 118