src/ngircd/irc-metadata.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2012 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 "imp.h"
  22 #include <assert.h>
  23 #include <string.h>
  24 #include <stdio.h>
  25
  26 #include "conn-func.h"
  27 #include "channel.h"
  28 #include "conn-encoding.h"
  29 #include "irc-write.h"
  30 #include "log.h"
  31 #include "messages.h"
  32 #include "parse.h"
  33 #include "tool.h"
  34
  35 #include "exp.h"
  36 #include "irc-metadata.h"
  37
  38 /**
  39  * Handler for the IRC+ "METADATA" command.
  40  *
  41  * @param Client The client from which this command has been received.
  42  * @param Req Request structure with prefix and all parameters.
  43  * @returns CONNECTED or DISCONNECTED.
  44  */
  45 GLOBAL bool
  46 IRC_METADATA(CLIENT *Client, REQUEST *Req)
  47 {
  48         CLIENT *prefix, *target;
  49         char new_flags[COMMAND_LEN];
  50
  51         assert(Client != NULL);
  52         assert(Req != NULL);
  53
  54         if (Req->argc != 3)
  55                 return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
  56                                           Client_ID(Client), Req->command);
  57
  58         prefix = Client_Search(Req->prefix);
  59         if (!prefix)
  60                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
  61                                           Client_ID(Client), Req->prefix);
  62
  63         target = Client_Search(Req->argv[0]);
  64         if (!target)
  65                 return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
  66                                           Client_ID(Client), Req->argv[0]);
  67
  68         LogDebug("Got \"METADATA\" command from \"%s\" for client \"%s\": \"%s=%s\".",
  69                  Client_ID(prefix), Client_ID(target),
  70                  Req->argv[1], Req->argv[2]);
  71
  72         /* Mark client: it has receiveda a METADATA command */
  73         if (!strchr(Client_Flags(target), 'M')) {
  74                 snprintf(new_flags, sizeof new_flags, "%sM",
  75                          Client_Flags(target));
  76                 Client_SetFlags(target, new_flags);
  77         }
  78
  79         if (strcasecmp(Req->argv[1], "cloakhost") == 0) {
  80                 Client_UpdateCloakedHostname(target, prefix, 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                 /* The Client_UpdateCloakedHostname() function already
  86                  * forwarded the METADATA command, don't do it twice: */
  87                 return CONNECTED;
  88         }
  89         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "host") == 0) {
  90                 Client_SetHostname(target, Req->argv[2]);
  91                 if (Client_Conn(target) > NONE && !Client_HasMode(target, 'x'))
  92                         IRC_WriteStrClientPrefix(target, prefix,
  93                                                  RPL_HOSTHIDDEN_MSG, Client_ID(target),
  94                                                  Client_HostnameDisplayed(target));
  95         } else if (strcasecmp(Req->argv[1], "info") == 0)
  96                 Client_SetInfo(target, Req->argv[2]);
  97         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "user") == 0)
  98                 Client_SetUser(target, Req->argv[2], true);
  99         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "certfp") == 0)
 100                 Conn_SetFingerprint(Client_Conn(target), Req->argv[2]);
 101         else
 102                 Log(LOG_WARNING,
 103                     "Ignored metadata update from \"%s\" for client \"%s\": \"%s=%s\" - unknown key!",
 104                     Client_ID(Client), Client_ID(target),
 105                     Req->argv[1], Req->argv[2]);
 106
 107         /* Forward the METADATA command to peers that support it: */
 108         IRC_WriteStrServersPrefixFlag(Client, prefix, 'M', "METADATA %s %s :%s",
 109                                 Client_ID(target), Req->argv[1], Req->argv[2]);
 110         return CONNECTED;
 111 }