src/ngircd/irc-metadata.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2014 Alexander Barton (alex@barton.de) and Contributors.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  * Please read the file COPYING, README and AUTHORS for more information.
  10  */
  11
  12 #define __irc_metadata_c__
  13
  14 #include "portab.h"
  15
  16 /**
  17  * @file
  18  * IRC metadata commands
  19  */
  20
  21 #include <assert.h>
  22 #include <strings.h>
  23 #include <stdio.h>
  24
  25 #include "conn-func.h"
  26 #include "channel.h"
  27 #include "irc-write.h"
  28 #include "log.h"
  29 #include "messages.h"
  30 #include "parse.h"
  31
  32 /**
  33  * Handler for the IRC+ "METADATA" command.
  34  *
  35  * @param Client The client from which this command has been received.
  36  * @param Req Request structure with prefix and all parameters.
  37  * @returns CONNECTED or DISCONNECTED.
  38  */
  39 GLOBAL bool
  40 IRC_METADATA(CLIENT *Client, REQUEST *Req)
  41 {
  42         CLIENT *prefix, *target;
  43         char new_flags[COMMAND_LEN];
  44
  45         assert(Client != NULL);
  46         assert(Req != NULL);
  47
  48         prefix = Client_Search(Req->prefix);
  49         if (!prefix)
  50                 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
  51                                           Client_ID(Client), Req->prefix);
  52
  53         target = Client_Search(Req->argv[0]);
  54         if (!target)
  55                 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
  56                                           Client_ID(Client), Req->argv[0]);
  57
  58         LogDebug("Got \"METADATA\" command from \"%s\" for client \"%s\": \"%s=%s\".",
  59                  Client_ID(prefix), Client_ID(target),
  60                  Req->argv[1], Req->argv[2]);
  61
  62         /* Mark client: it has received a METADATA command */
  63         if (!Client_HasFlag(target, 'M')) {
  64                 snprintf(new_flags, sizeof new_flags, "%sM",
  65                          Client_Flags(target));
  66                 Client_SetFlags(target, new_flags);
  67         }
  68
  69         if (strcasecmp(Req->argv[1], "cloakhost") == 0) {
  70                 Client_UpdateCloakedHostname(target, prefix, Req->argv[2]);
  71                 if (Client_Conn(target) > NONE && Client_HasMode(target, 'x'))
  72                         IRC_WriteStrClientPrefix(target, prefix,
  73                                         RPL_HOSTHIDDEN_MSG, Client_ID(target),
  74                                         Client_HostnameDisplayed(target));
  75                 /* The Client_UpdateCloakedHostname() function already
  76                  * forwarded the METADATA command, don't do it twice: */
  77                 return CONNECTED;
  78         }
  79         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "host") == 0) {
  80                 Client_SetHostname(target, Req->argv[2]);
  81                 if (Client_Conn(target) > NONE && !Client_HasMode(target, 'x'))
  82                         IRC_WriteStrClientPrefix(target, prefix,
  83                                                  RPL_HOSTHIDDEN_MSG, Client_ID(target),
  84                                                  Client_HostnameDisplayed(target));
  85         } else if (strcasecmp(Req->argv[1], "info") == 0)
  86                 Client_SetInfo(target, Req->argv[2]);
  87         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "user") == 0)
  88                 Client_SetUser(target, Req->argv[2], true);
  89         else if (strcasecmp(Req->argv[1], "accountname") == 0)
  90                 Client_SetAccountName(target, Req->argv[2]);
  91         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "certfp") == 0)
  92                 Conn_SetCertFp(Client_Conn(target), Req->argv[2]);
  93         else
  94                 Log(LOG_WARNING,
  95                     "Ignored metadata update from \"%s\" for client \"%s\": \"%s=%s\" - unknown key!",
  96                     Client_ID(Client), Client_ID(target),
  97                     Req->argv[1], Req->argv[2]);
  98
  99         /* Forward the METADATA command to peers that support it: */
 100         IRC_WriteStrServersPrefixFlag(Client, prefix, 'M', "METADATA %s %s :%s",
 101                                 Client_ID(target), Req->argv[1], Req->argv[2]);
 102         return CONNECTED;
 103 }