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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* m_capab.c: Negotiates capabilities with a remote server. |
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* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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* |
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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
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#include "handlers.h" |
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#include "client.h" |
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#include "irc_string.h" |
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#include "s_serv.h" |
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#include "s_conf.h" |
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#include "msg.h" |
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#include "parse.h" |
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#include "modules.h" |
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|
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static void mr_capab(struct Client *, struct Client *, int, char *[]); |
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|
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struct Message capab_msgtab = { |
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"CAPAB", 0, 0, 0, 0, MFLG_SLOW | MFLG_UNREG, 0, |
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{ mr_capab, m_ignore, m_ignore, m_ignore, m_ignore, m_ignore } |
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}; |
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|
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void |
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_modinit(void) |
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{ |
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mod_add_cmd(&capab_msgtab); |
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} |
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|
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void |
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_moddeinit(void) |
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{ |
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mod_del_cmd(&capab_msgtab); |
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} |
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|
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const char *_version = "$Revision$"; |
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|
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/* |
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* mr_capab - CAPAB message handler |
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* parv[0] = sender prefix |
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* parv[1] = space-separated list of capabilities |
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* |
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*/ |
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static void |
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mr_capab(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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int i; |
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int cap; |
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char *p = NULL; |
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char *s = NULL; |
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#ifdef HAVE_LIBCRYPTO |
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const struct EncCapability *ecap; |
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unsigned int cipher = 0; |
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#endif |
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|
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if (client_p->localClient->caps && !(IsCapable(client_p, CAP_TS6))) |
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{ |
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exit_client(client_p, client_p, "CAPAB received twice"); |
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return; |
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} |
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|
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SetCapable(client_p, CAP_CAP); |
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|
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for (i = 1; i < parc; ++i) |
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{ |
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for (s = strtoken(&p, parv[i], " "); s; |
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s = strtoken(&p, NULL, " ")) |
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{ |
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#ifdef HAVE_LIBCRYPTO |
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if (!strncmp(s, "ENC:", 4)) |
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{ |
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/* Skip the "ENC:" portion */ |
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s += 4; |
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|
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/* Check the remaining portion against the list of ciphers we |
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* have available (CipherTable). |
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*/ |
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for (ecap = CipherTable; ecap->name; ++ecap) |
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{ |
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if (!irccmp(ecap->name, s) && (ecap->cap & CAP_ENC_MASK)) |
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{ |
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cipher = ecap->cap; |
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break; |
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} |
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} |
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|
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/* Since the name and capabilities matched, use it. */ |
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if (cipher != 0) |
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{ |
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SetCapable(client_p, CAP_ENC); |
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client_p->localClient->enc_caps |= cipher; |
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} |
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else |
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{ |
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/* cipher is still zero; we didn't find a matching entry. */ |
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exit_client(client_p, client_p, |
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"Cipher selected is not available here."); |
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return; |
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} |
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} |
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else /* normal capab */ |
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#endif |
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if ((cap = find_capability(s)) != 0) |
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SetCapable(client_p, cap); |
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} |
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} |
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} |
