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Copyright (c) 2010-2011 Samuel Lidén Borell <samuel@kodafritt.se>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
olor: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/* X-Chat
 * Copyright (C) 1998 Peter Zelezny.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#ifndef WIN32
#include <unistd.h>
#endif

#include "hexchat.h"
#include "cfgfiles.h"
#include "util.h"
#include "modes.h"
#include "outbound.h"
#include "ignore.h"
#include "inbound.h"
#include "dcc.h"
#include "text.h"
#include "ctcp.h"
#include "server.h"
#include "hexchatc.h"


static void
ctcp_reply (session *sess, char *nick, char *word[], char *word_eol[],
				char *conf)
{
	char tbuf[4096];	/* can receive 2048 from IRC, so this is enough */

	conf = g_strdup (conf);
	/* process %C %B etc */
	check_special_chars (conf, TRUE);
	auto_insert (tbuf, sizeof (tbuf), conf, word, word_eol, "", "", word_eol[5],
					 server_get_network (sess->server, TRUE), "", "", nick, "");
	g_free (conf);
	handle_command (sess, tbuf, FALSE);
}

static int
ctcp_check (session *sess, char *nick, char *word[], char *word_eol[],
				char *ctcp)
{
	int ret = 0;
	char *po;
	struct popup *pop;
	GSList *list = ctcp_list;

	po = strchr (ctcp, '\001');
	if (po)
		*po = 0;

	po = strchr (word_eol[5], '\001');
	if (po)
		*po = 0;

	while (list)
	{
		pop = (struct popup *) list->data;
		if (!g_ascii_strcasecmp (ctcp, pop->name))
		{
			ctcp_reply (sess, nick, word, word_eol, pop->cmd);
			ret = 1;
		}
		list = list->next;
	}
	return ret;
}

void
ctcp_handle (session *sess, char *to, char *nick, char *ip,
				 char *msg, char *word[], char *word_eol[], int id,
				 const message_tags_data *tags_data)
{
	char *po;
	session *chansess;
	server *serv = sess->server;
	char outbuf[1024];
	int ctcp_offset = 2;

	if (serv->have_idmsg && (word[4][1] == '+' || word[4][1] == '-') )
			ctcp_offset = 3;

	/* consider DCC to be different from other CTCPs */
	if (!g_ascii_strncasecmp (msg, "DCC", 3))
	{
		/* but still let CTCP replies override it */
		if (!ctcp_check (sess, nick, word, word_eol, word[4] + ctcp_offset))
		{
			if (!ignore_check (word[1], IG_DCC))
				handle_dcc (sess, nick, word, word_eol, tags_data);
		}
		return;
	}

	/* consider ACTION to be different from other CTCPs. Check
      ignore as if it was a PRIV/CHAN. */
	if (!g_ascii_strncasecmp (msg, "ACTION ", 7))
	{
		if (is_channel (serv, to))
		{
			/* treat a channel action as a CHAN */
			if (ignore_check (word[1], IG_CHAN))
				return;
		} else
		{
			/* treat a private action as a PRIV */
			if (ignore_check (word[1], IG_PRIV))
				return;
		}

		/* but still let CTCP replies override it */
		if (ctcp_check (sess, nick, word, word_eol, word[4] + ctcp_offset))
			goto generic;

		inbound_action (sess, to, nick, ip, msg + 7, FALSE, id, tags_data);
		return;
	}

	if (ignore_check (word[1], IG_CTCP))
		return;

	if (!g_ascii_strcasecmp (msg, "VERSION") && !prefs.hex_irc_hide_version)
	{
#ifdef WIN32
		g_snprintf (outbuf, sizeof (outbuf), "VERSION HexChat "PACKAGE_VERSION" [x%d] / %s",
					 get_cpu_arch (), get_sys_str (1));
#else
		g_snprintf (outbuf, sizeof (outbuf), "VERSION HexChat "PACKAGE_VERSION" / %s",
					 get_sys_str (1));
#endif
		serv->p_nctcp (serv, nick, outbuf);
	}

	if (!ctcp_check (sess, nick, word, word_eol, word[4] + ctcp_offset))
	{
		if (!g_ascii_strncasecmp (msg, "SOUND", 5))
		{
			po = strchr (word[5], '\001');
			if (po)
				po[0] = 0;

			if (is_channel (sess->server, to))
			{
				chansess = find_channel (sess->server, to);
				if (!chansess)
					chansess = sess;

				EMIT_SIGNAL_TIMESTAMP (XP_TE_CTCPSNDC, chansess, word[5],
											  nick, to, NULL, 0, tags_data->timestamp);
			} else
			{
				EMIT_SIGNAL_TIMESTAMP (XP_TE_CTCPSND, sess->server->front_session,
											  word[5], nick, NULL, NULL, 0,
											  tags_data->timestamp);
			}

			/* don't let IRCers specify path */
#ifdef WIN32
			if (strchr (word[5], '/') == NULL && strchr (word[5], '\\') == NULL)
#else
			if (strchr (word[5], '/') == NULL)
#endif
				sound_play (word[5], TRUE);
			return;
		}
	}

generic:
	po = strchr (msg, '\001');
	if (po)
		po[0] = 0;

	if (!is_channel (sess->server, to))
	{
		EMIT_SIGNAL_TIMESTAMP (XP_TE_CTCPGEN, sess->server->front_session, msg,
									  nick, NULL, NULL, 0, tags_data->timestamp);
	} else
	{
		chansess = find_channel (sess->server, to);
		if (!chansess)
			chansess = sess;
		EMIT_SIGNAL_TIMESTAMP (XP_TE_CTCPGENC, chansess, msg, nick, to, NULL, 0,
									  tags_data->timestamp);
	}
}