src/ngircd/irc-metadata.c

   1 /*
   2  * ngIRCd -- The Next Generation IRC Daemon
   3  * Copyright (c)2001-2015 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-macros.h"
  28 #include "irc-write.h"
  29 #include "log.h"
  30 #include "messages.h"
  31 #include "parse.h"
  32
  33 #include "irc-metadata.h"
  34
  35 /**
  36  * Handler for the IRC+ "METADATA" command.
  37  *
  38  * @param Client The client from which this command has been received.
  39  * @param Req Request structure with prefix and all parameters.
  40  * @returns CONNECTED or DISCONNECTED.
  41  */
  42 GLOBAL bool
  43 IRC_METADATA(CLIENT *Client, REQUEST *Req)
  44 {
  45         CLIENT *prefix, *target;
  46         char new_flags[COMMAND_LEN];
  47
  48         assert(Client != NULL);
  49         assert(Req != NULL);
  50
  51         _IRC_REQUIRE_PREFIX_OR_RETURN_(Client, Req)
  52
  53         prefix = Client_Search(Req->prefix);
  54         if (!prefix)
  55                 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
  56                                           Client_ID(Client), Req->prefix);
  57
  58         target = Client_Search(Req->argv[0]);
  59         if (!target)
  60                 return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
  61                                           Client_ID(Client), Req->argv[0]);
  62
  63         LogDebug("Got \"METADATA\" command from \"%s\" for client \"%s\": \"%s=%s\".",
  64                  Client_ID(prefix), Client_ID(target),
  65                  Req->argv[1], Req->argv[2]);
  66
  67         /* Mark client: it has received a METADATA command */
  68         if (!Client_HasFlag(target, 'M')) {
  69                 snprintf(new_flags, sizeof new_flags, "%sM",
  70                          Client_Flags(target));
  71                 Client_SetFlags(target, new_flags);
  72         }
  73
  74         if (strcasecmp(Req->argv[1], "cloakhost") == 0) {
  75                 Client_UpdateCloakedHostname(target, prefix, Req->argv[2]);
  76                 if (Client_Conn(target) > NONE && Client_HasMode(target, 'x'))
  77                         IRC_WriteStrClientPrefix(target, prefix,
  78                                         RPL_HOSTHIDDEN_MSG, Client_ID(target),
  79                                         Client_HostnameDisplayed(target));
  80                 /* The Client_UpdateCloakedHostname() function already
  81                  * forwarded the METADATA command, don't do it twice: */
  82                 return CONNECTED;
  83         }
  84         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "host") == 0) {
  85                 Client_SetHostname(target, Req->argv[2]);
  86                 if (Client_Conn(target) > NONE && !Client_HasMode(target, 'x'))
  87                         IRC_WriteStrClientPrefix(target, prefix,
  88                                                  RPL_HOSTHIDDEN_MSG, Client_ID(target),
  89                                                  Client_HostnameDisplayed(target));
  90         } else if (strcasecmp(Req->argv[1], "info") == 0)
  91                 Client_SetInfo(target, Req->argv[2]);
  92         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "user") == 0)
  93                 Client_SetUser(target, Req->argv[2], true);
  94         else if (strcasecmp(Req->argv[1], "accountname") == 0)
  95                 Client_SetAccountName(target, Req->argv[2]);
  96         else if (*Req->argv[2] && strcasecmp(Req->argv[1], "certfp") == 0)
  97                 Conn_SetCertFp(Client_Conn(target), Req->argv[2]);
  98         else
  99                 Log(LOG_WARNING,
 100                     "Ignored metadata update from \"%s\" for client \"%s\": \"%s=%s\" - unknown key!",
 101                     Client_ID(Client), Client_ID(target),
 102                     Req->argv[1], Req->argv[2]);
 103
 104         /* Forward the METADATA command to peers that support it: */
 105         IRC_WriteStrServersPrefixFlag(Client, prefix, 'M', "METADATA %s %s :%s",
 106                                 Client_ID(target), Req->argv[1], Req->argv[2]);
 107         return CONNECTED;
 108 }