/* 
 * ctcp.c -- part of ctcp.mod
 *   all the ctcp handling (except DCC, it's special ;)
 * 
 * $Id: ctcp.c,v 1.8 2000/03/23 23:17:57 fabian Exp $
 */
/* 
 * Copyright (C) 1997  Robey Pointer
 * Copyright (C) 1999, 2000  Eggheads
 * 
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#define MODULE_NAME "ctcp"
#define MAKING_CTCP
#include "ctcp.h"
#include "src/mod/module.h"
#include "server.mod/server.h"
#include <netinet/in.h>
#include <arpa/inet.h>

static Function *global = NULL, *server_funcs = NULL;

static char ctcp_version[256];
static char ctcp_finger[256];
static char ctcp_userinfo[256];
static int ctcp_mode = 0;


static int ctcp_FINGER(char *nick, char *uhost, char *handle,
		       char *object, char *keyword, char *text)
{
  Context;
  if ((ctcp_finger[0]) && (ctcp_mode != 1))
    simple_sprintf(ctcp_reply, "%s\001FINGER %s\001", ctcp_reply, ctcp_finger);
  return 1;
}

static int ctcp_ECHOERR(char *nick, char *uhost, char *handle,
			char *object, char *keyword, char *text)
{
  Context;
  if ((strlen(text) <= 80) && (ctcp_mode != 1))
    simple_sprintf(ctcp_reply, "%s\001%s %s\001", ctcp_reply, keyword, text);
  return 1;
}

static int ctcp_PING(char *nick, char *uhost, char *handle,
		     char *object, char *keyword, char *text)
{
  struct userrec *u = get_user_by_handle(userlist, handle);
  int atr = u ? u->flags : 0;

  Context;
  if ((ctcp_mode != 1) || ((atr & (USER_OP)))) {
    if (strlen(text) <= 80)	/* bitch ignores > 80 */
      simple_sprintf(ctcp_reply, "%s\001%s %s\001", ctcp_reply, keyword, text);
  }
  return 1;
}

static int ctcp_VERSION(char *nick, char *uhost, char *handle,
			char *object, char *keyword, char *text)
{
  Context;
  if ((ctcp_version[0]) && (ctcp_mode != 1))
    simple_sprintf(ctcp_reply, "%s\001VERSION %s\001", ctcp_reply,
		   ctcp_version);
  return 1;
}

static int ctcp_USERINFO(char *nick, char *uhost, char *handle,
			 char *object, char *keyword, char *text)
{
  Context;
  if ((ctcp_userinfo[0]) && (ctcp_mode != 1))
    simple_sprintf(ctcp_reply, "%s\001USERINFO %s\001", ctcp_reply,
		   ctcp_userinfo);
  return 1;
}

static int ctcp_CLIENTINFO(char *nick, char *uhosr, char *handle,
			   char *object, char *keyword, char *msg)
{
  char *p = NULL;

  Context;
  if ((ctcp_mode == 1))
    return 1;
  if (!msg[0])
    p = CLIENTINFO;
  else if (!egg_strcasecmp(msg, "sed"))
    p = CLIENTINFO_SED;
  else if (!egg_strcasecmp(msg, "version"))
    p = CLIENTINFO_VERSION;
  else if (!egg_strcasecmp(msg, "clientinfo"))
    p = CLIENTINFO_CLIENTINFO;
  else if (!egg_strcasecmp(msg, "userinfo"))
    p = CLIENTINFO_USERINFO;
  else if (!egg_strcasecmp(msg, "errmsg"))
    p = CLIENTINFO_ERRMSG;
  else if (!egg_strcasecmp(msg, "finger"))
    p = CLIENTINFO_FINGER;
  else if (!egg_strcasecmp(msg, "time"))
    p = CLIENTINFO_TIME;
  else if (!egg_strcasecmp(msg, "action"))
    p = CLIENTINFO_ACTION;
  else if (!egg_strcasecmp(msg, "dcc"))
    p = CLIENTINFO_DCC;
  else if (!egg_strcasecmp(msg, "utc"))
    p = CLIENTINFO_UTC;
  else if (!egg_strcasecmp(msg, "ping"))
    p = CLIENTINFO_PING;
  else if (!egg_strcasecmp(msg, "echo"))
    p = CLIENTINFO_ECHO;
  if (p == NULL) {
    simple_sprintf(ctcp_reply,
	       "%s\001ERRMSG CLIENTINFO: %s is not a valid function\001",
		   ctcp_reply, msg);
  } else
    simple_sprintf(ctcp_reply, "%s\001CLIENTINFO %s\001", ctcp_reply, p);
  return 1;
}

static int ctcp_TIME(char *nick, char *uhost, char *handle, char *object,
		     char *keyword, char *text)
{
  char tms[81];

  Context;
  if ((ctcp_mode == 1))
    return 1;
  strcpy(tms, ctime(&now));
  tms[strlen(tms) - 1] = 0;
  simple_sprintf(ctcp_reply, "%s\001TIME %s\001", ctcp_reply, tms);
  return 1;
}

static int ctcp_CHAT(char *nick, char *uhost, char *handle, char *object,
		     char *keyword, char *text)
{
  struct userrec *u = get_user_by_handle(userlist, handle);
  int atr = u ? u->flags : 0, i, ix = (-1);

  Context;
  if ((atr & (USER_PARTY | USER_XFER)) ||
      ((atr & USER_OP) && !require_p)) {
    for (i = 0; i < dcc_total; i++) {
      if ((dcc[i].type->flags & DCT_LISTEN) &&
	  ((!strcmp(dcc[i].nick, "(telnet)")) ||
	   (!strcmp(dcc[i].nick, "(users)")))) {
	ix = i;
	/* Do me a favour and don't change this back to a CTCP reply,
	 * CTCP replies are NOTICE's this has to be a PRIVMSG
	 * -poptix 5/1/1997 */
	dprintf(DP_SERVER, "PRIVMSG %s :\001DCC CHAT chat %lu %u\001\n",
		nick,
		iptolong(natip[0] ? (IP) inet_addr(natip) : getmyip()),
		dcc[ix].port);
      }
    }
    if (ix < 0)
      simple_sprintf(ctcp_reply,
		     "%s\001ERROR no telnet port\001", ctcp_reply);
  }
  return 1;
}

static cmd_t myctcp[] =
{
  {"FINGER",		"",	ctcp_FINGER,		NULL},
  {"ECHO",		"",	ctcp_ECHOERR,		NULL},
  {"PING",		"",	ctcp_PING,		NULL},
  {"ERRMSG",		"",	ctcp_ECHOERR,		NULL},
  {"VERSION",		"",	ctcp_VERSION,		NULL},
  {"USERINFO",		"",	ctcp_USERINFO,		NULL},
  {"CLIENTINFO",	"",	ctcp_CLIENTINFO,	NULL},
  {"TIME",		"",	ctcp_TIME,		NULL},
  {"CHAT",		"",	ctcp_CHAT,		NULL},
  {NULL,		NULL,	NULL,			NULL}
};

static tcl_strings mystrings[] =
{
  {"ctcp-version",	ctcp_version,	120,	0},
  {"ctcp-finger",	ctcp_finger,	120,	0},
  {"ctcp-userinfo",	ctcp_userinfo,	120,	0},
  {NULL,		NULL,		0,	0}
};

static tcl_ints myints[] =
{
  {"ctcp-mode",		&ctcp_mode},
  {NULL,		NULL}
};

static char *ctcp_close()
{
  rem_tcl_strings(mystrings);
  rem_tcl_ints(myints);
  rem_builtins(H_ctcp, myctcp);
  rem_help_reference("ctcp.help");
  module_undepend(MODULE_NAME);
  return NULL;
}

char *ctcp_start();

static Function ctcp_table[] =
{
  (Function) ctcp_start,
  (Function) ctcp_close,
  (Function) NULL,
  (Function) NULL,
};

char *ctcp_start(Function * global_funcs)
{
  global = global_funcs;

  Context;
  module_register(MODULE_NAME, ctcp_table, 1, 0);
  if (!module_depend(MODULE_NAME, "eggdrop", 105, 0)) {
    module_undepend(MODULE_NAME);
    return "You need an eggdrop of at least v1.5.0 to use this ctcp module.";
  }
  if (!(server_funcs = module_depend(MODULE_NAME, "server", 1, 0))) {
    module_undepend(MODULE_NAME);
    return "You need the server module to use the ctcp module.";
  }
  add_tcl_strings(mystrings);
  add_tcl_ints(myints);
  add_builtins(H_ctcp, myctcp);
  add_help_reference("ctcp.help");
  if (!ctcp_version[0]) {
    strncpy(ctcp_version, ver, 160);
    ctcp_version[160] = 0;
  }
  if (!ctcp_finger[0]) {
    strncpy(ctcp_finger, ver, 160);
    ctcp_finger[160] = 0;
  }
  if (!ctcp_userinfo[0]) {
    strncpy(ctcp_userinfo, ver, 160);
    ctcp_userinfo[160] = 0;
  }
  return NULL;
}