/* Access list and level modification handling for ChanServ.
 *
 * IRC Services is copyright (c) 1996-2005 Andrew Church.
 *     E-mail: <achurch@[Üye Olmadan Linkleri Göremezsiniz. Üye Olmak için TIKLAYIN...]urch.org>
 * Parts written by Andrew Kempe and others.
 * This program is free but copyrighted software; see the file COPYING for
 * details.
 */
#include "services.h"
#include "modules.h"
#include "conffile.h"
#include "language.h"
#include "commands.h"
#include "modules/nickserv/nickserv.h"
#include "modules/operserv/operserv.h"
#include "chanserv.h"
#include "access.h"
#include "cs-local.h"
/*************************************************************************/
static Module *module;
static Module *module_chanserv;
static int levelinfo_maxwidth = 0;
/*************************************************************************/
/* Local functions. */
static void do_levels(User *u);
static void do_access(User *u);
static int access_del(ChannelInfo *ci, int num, int uacc);
static int access_del_callback(User *u, int num, va_list args);
static int access_list(User *u, int index, ChannelInfo *ci, int *sent_header);
static int access_list_callback(User *u, int num, va_list args);
/*************************************************************************/
static Command cmds[] = {
    { "ACCESS",   do_access,   NULL,  -1,                       -1,-1 },
    { "LEVELS",   do_levels,   NULL,  -1,                       -1,-1 },
    { NULL }
};
/*************************************************************************/
/***************************** Help display ******************************/
/*************************************************************************/
/* Callback to display help text for ACCESS, ACCESS LEVELS, LEVELS, and
 * LEVELS DESC.
 */
static int do_help(User *u, const char *param)
{
    int i;
    const char *s;
    if (stricmp(param, "ACCESS") == 0) {
 notice_help(s_ChanServ, u, CHAN_HELP_ACCESS);
 if (find_module("chanserv/access-xop")) {
     if (protocol_features & PF_HALFOP) {
  notice_help(s_ChanServ, u, CHAN_HELP_ACCESS_XOP_HALFOP,
       ACCLEV_SOP, ACCLEV_AOP, ACCLEV_HOP, ACCLEV_VOP);
     } else {
  notice_help(s_ChanServ, u, CHAN_HELP_ACCESS_XOP,
       ACCLEV_SOP, ACCLEV_AOP, ACCLEV_VOP);
     }
 }
 return 1;
    } else if (strnicmp(param, "ACCESS", 6) == 0
     && isspace(param[6])
     && stricmp(param+7+strspn(param+7," \t"), "LEVELS") == 0
    ) {
 notice_help(s_ChanServ, u, CHAN_HELP_ACCESS_LEVELS,
      ACCLEV_SOP, ACCLEV_AOP);
 if (protocol_features & PF_HALFOP) {
     notice_help(s_ChanServ, u, CHAN_HELP_ACCESS_LEVELS_HALFOP,
   ACCLEV_HOP);
 }
 notice_help(s_ChanServ, u, CHAN_HELP_ACCESS_LEVELS_END,
      ACCLEV_VOP);
 return 1;
    } else if (strnicmp(param, "LEVELS", 6) == 0) {
 s = (param+6) + strspn(param+6," \t");
 if (!*s) {
     notice_help(s_ChanServ, u, CHAN_HELP_LEVELS);
     if (find_module("chanserv/access-xop")) {
  if (protocol_features & PF_HALFOP)
      notice_help(s_ChanServ, u, CHAN_HELP_LEVELS_XOP_HOP);
  else
      notice_help(s_ChanServ, u, CHAN_HELP_LEVELS_XOP);
     }
     notice_help(s_ChanServ, u, CHAN_HELP_LEVELS_END);
     return 1;
 } else if (stricmp(s, "DESC") == 0) {
     notice_help(s_ChanServ, u, CHAN_HELP_LEVELS_DESC);
     if (!levelinfo_maxwidth) {
  for (i = 0; levelinfo[i].what >= 0; i++) {
      int len = strlen(levelinfo[i].name);
      if (len > levelinfo_maxwidth)
   levelinfo_maxwidth = len;
  }
     }
     for (i = 0; levelinfo[i].what >= 0; i++) {
  if (!*levelinfo[i].name)
      continue;
  notice(s_ChanServ, u->nick, "    %-*s  %s",
         levelinfo_maxwidth, levelinfo[i].name,
         getstring(u->ngi, levelinfo[i].desc));
     }
     return 1;
 }
    }
    return 0;
}
/*************************************************************************/
/************************** The ACCESS command ***************************/
/*************************************************************************/
static void do_access(User *u)
{
    char *chan = strtok(NULL, " ");
    char *cmd  = strtok(NULL, " ");
    char *nick = strtok(NULL, " ");
    char *s    = strtok(NULL, " ");
    ChannelInfo *ci;
    NickInfo *ni;
    NickGroupInfo *ngi;
    int16 level = 0;
    int i;
    int is_list;  /* Is true when command is either LIST or COUNT */
    int is_servadmin = is_services_admin(u);
    is_list = (cmd && (stricmp(cmd, "LIST")==0 || stricmp(cmd, "COUNT")==0));
    /* If LIST/COUNT, we don't *require* any parameters, but we can take any.
     * If DEL, we require a nick and no level.
     * Else (ADD), we require a level (which implies a nick). */
    if (!cmd || (is_list ? 0 :
   (stricmp(cmd,"DEL")==0) ? (!nick || s) : !s)) {
 syntax_error(s_ChanServ, u, "ACCESS", CHAN_ACCESS_SYNTAX);
    } else if (!(ci = get_channelinfo(chan))) {
 notice_lang(s_ChanServ, u, CHAN_X_NOT_REGISTERED, chan);
    } else if (ci->flags & CI_VERBOTEN) {
 notice_lang(s_ChanServ, u, CHAN_X_FORBIDDEN, chan);
    } else if (!is_servadmin
        && !check_access_cmd(u, ci, "ACCESS", is_list ? "LIST" : cmd)) {
 notice_lang(s_ChanServ, u, ACCESS_DENIED);
    } else if (stricmp(cmd, "ADD") == 0) {
 if (readonly) {
     notice_lang(s_ChanServ, u, CHAN_ACCESS_DISABLED);
     return;
 }
 level = atoi(s);
 if (level == 0) {
     notice_lang(s_ChanServ, u, CHAN_ACCESS_LEVEL_NONZERO);
     return;
 } else if (level <= ACCLEV_INVALID || level >= ACCLEV_FOUNDER) {
     notice_lang(s_ChanServ, u, CHAN_ACCESS_LEVEL_RANGE,
   ACCLEV_INVALID+1, ACCLEV_FOUNDER-1);
     return;
 }
 switch (access_add(ci, nick, level,
      is_servadmin ? ACCLEV_FOUNDER : get_access(u,ci), u->nick)) {
   case RET_ADDED:
     notice_lang(s_ChanServ, u, CHAN_ACCESS_ADDED, nick, chan, level);
send_cmd(s_ChanServ, "PRIVMSG #svslog %s , %s Nickine (%s) Kanalında  (%d) olarak Yetki ekledi.",
 u->nick, nick, chan, level);
send_cmd(s_ChanServ, "NOTICE %s %s size, %s kanalinda %d ayarinda access ekledi.", u->nick, nick, chan, level);           
     break;
   case RET_CHANGED:
     notice_lang(s_ChanServ, u, CHAN_ACCESS_LEVEL_CHANGED,
   nick, chan, level);
send_cmd(s_ChanServ, "NOTICE %s %s Nicki %s Kanalında Yetkinizi  değiştirdi.", u->nick, nick, chan);
 send_cmd(s_ChanServ, "PRIVMSG #svslog  %s Nicki %s Kanalında  (%s) nin Yetkisini (%d)  olarak değiştirdi.", u->nick,  chan, nick);
     break;
   case RET_UNCHANGED:
     notice_lang(s_ChanServ, u, CHAN_ACCESS_LEVEL_UNCHANGED,
   nick, chan, level);
     break;
   case RET_LISTFULL:
     notice_lang(s_ChanServ, u, CHAN_ACCESS_REACHED_LIMIT, CSAccessMax);
     break;
   case RET_NOSUCHNICK:
     notice_lang(s_ChanServ, u, CHAN_ACCESS_NICKS_ONLY);
     break;
   case RET_NICKFORBID:
     notice_lang(s_ChanServ, u, NICK_X_FORBIDDEN, nick);
     break;
   case RET_PERMISSION:
     notice_lang(s_ChanServ, u, PERMISSION_DENIED);
     break;
 }
    } else if (stricmp(cmd, "DEL") == 0) {
 if (readonly) {
     notice_lang(s_ChanServ, u, CHAN_ACCESS_DISABLED);
     return;
 }
 /* Special case: is it a number/list? */
 if (isdigit(*nick) && strspn(nick, "1234567890,-") == strlen(nick)) {
     int count, deleted, last = -1, perm = 0;
     deleted = process_numlist(nick, &count, access_del_callback, u,
          ci, &last, &perm, is_servadmin
          ? ACCLEV_FOUNDER : get_access(u,ci));
     if (!deleted) {
  if (perm) {
      notice_lang(s_ChanServ, u, PERMISSION_DENIED);
  } else if (count == 1) {
      notice_lang(s_ChanServ, u, CHAN_ACCESS_NO_SUCH_ENTRY,
    last, ci->name);
  } else {
      notice_lang(s_ChanServ, u, CHAN_ACCESS_NO_MATCH, ci->name);
  }
  return;
     } else if (deleted == 1) {
  notice_lang(s_ChanServ, u, CHAN_ACCESS_DELETED_ONE, ci->name);
     } else {
  notice_lang(s_ChanServ, u, CHAN_ACCESS_DELETED_SEVERAL,
    deleted, ci->name);
     }
 } else { /* Not a number/list; search for it as a nickname. */
     ni = get_nickinfo(nick);
     if (!ni) {
  notice_lang(s_ChanServ, u, NICK_X_NOT_REGISTERED, nick);
  return;
     }
     ngi = get_ngi(ni);
     if (!ngi) {
  notice_lang(s_ChanServ, u, INTERNAL_ERROR);
  return;
     }
     ARRAY_SEARCH_SCALAR(ci->access, nickgroup, ngi->id, i);
     if (i == ci->access_count) {
  notice_lang(s_ChanServ, u, CHAN_ACCESS_NOT_FOUND, nick, chan);
  return;
     }
     switch (access_del(ci, i, is_servadmin
          ? ACCLEV_FOUNDER : get_access(u,ci))) {
       case RET_DELETED:
  notice_lang(s_ChanServ, u, CHAN_ACCESS_DELETED,
       ni->nick, ci->name);
send_cmd(s_ChanServ, "PRIVMSG #svslog %s Nicki %s Kanalında (%s) Nickinin Yetkisini sildi.", u->nick, chan, nick);
send_cmd(s_ChanServ, "NOTICE %s %s Kullanıcısı %s Kanalında Sizi sildi.", u->nick, u->nick, chan);
  break;
       case RET_PERMISSION:
  notice_lang(s_ChanServ, u, PERMISSION_DENIED);
  return;
     }
 }
 put_channelinfo(ci);
    } else if (stricmp(cmd, "LIST") == 0) {
 int sent_header = 0;
 if (ci->access_count == 0) {
     notice_lang(s_ChanServ, u, CHAN_ACCESS_LIST_EMPTY, chan);
     return;
 }
 if (nick && strspn(nick, "1234567890,-") == strlen(nick)) {
     process_numlist(nick,NULL,access_list_callback,u,ci,&sent_header);
 } else {
     ARRAY_FOREACH (i, ci->access) {
  if (nick && ci->access[i].nickgroup) {
      if (!(ngi = get_ngi_id(ci->access[i].nickgroup))
       || !match_wild_nocase(nick, ngi_mainnick(ngi))
      ) {
   continue;
      }
  }
  access_list(u, i, ci, &sent_header);
     }
 }
 if (!sent_header)
     notice_lang(s_ChanServ, u, CHAN_ACCESS_NO_MATCH, chan);
    } else if (stricmp(cmd, "COUNT") == 0) {
 int count = 0;
 ARRAY_FOREACH (i, ci->access) {
     if (ci->access[i].nickgroup)
  count++;
 }
 notice_lang(s_ChanServ, u, CHAN_ACCESS_COUNT, ci->name, count);
    } else { /* Unknown command */
 syntax_error(s_ChanServ, u, "ACCESS", CHAN_ACCESS_SYNTAX);
    }
}
/*************************************************************************/
static int access_del(ChannelInfo *ci, int num, int uacc)
{
    ChanAccess *access = &ci->access[num];
    if (!access->nickgroup)
 return RET_NOENTRY;
    if (uacc <= access->level)
 return RET_PERMISSION;
    access->nickgroup = 0;
    return RET_DELETED;
}
/* `last' is set to the last valid index seen
 * `perm' is incremented whenever a permission-denied error occurs
 */
static int access_del_callback(User *u, int num, va_list args)
{
    ChannelInfo *ci = va_arg(args, ChannelInfo *);
    int *last = va_arg(args, int *);
    int *perm = va_arg(args, int *);
    int uacc = va_arg(args, int);
    if (num < 1 || num > ci->access_count)
 return 0;
    *last = num;
    switch (access_del(ci, num-1, uacc)) {
      case RET_DELETED:
 return 1;
      case RET_PERMISSION:
 (*perm)++;
 /* fall through */
      default:
 return 0;
    }
}
/*************************************************************************/
static int access_list(User *u, int index, ChannelInfo *ci, int *sent_header)
{
    ChanAccess *access = &ci->access[index];
    NickGroupInfo *ngi;
    if (!access->nickgroup)
 return RET_NOENTRY;
    if (!(ngi = get_ngi_id(access->nickgroup)))
 return RET_INTERR;
    if (!*sent_header) {
 notice_lang(s_ChanServ, u, CHAN_ACCESS_LIST_HEADER, ci->name);
 *sent_header = 1;
    }
    notice_lang(s_ChanServ, u, CHAN_ACCESS_LIST_FORMAT,
  index+1, access->level, ngi_mainnick(ngi), access->ekleyen);
    return RET_LISTED;
}
static int access_list_callback(User *u, int num, va_list args)
{
    ChannelInfo *ci = va_arg(args, ChannelInfo *);
    int *sent_header = va_arg(args, int *);
    if (num < 1 || num > ci->access_count)
 return 0;
    return access_list(u, num-1, ci, sent_header) > 0;
}
/*************************************************************************/
/************************** The LEVELS command ***************************/
/*************************************************************************/
static void do_levels(User *u)
{
    char *chan = strtok(NULL, " ");
    char *cmd  = strtok(NULL, " ");
    char *what = strtok(NULL, " ");
    char *s    = strtok(NULL, " ");
    ChannelInfo *ci;
    int16 level;
    int i;
    /* If SET, we want two extra parameters; if DIS[ABLE], we want only
     * one; else, we want none.
     */
    if (!cmd || ((stricmp(cmd,"SET")==0) ? !s :
   (strnicmp(cmd,"DIS",3)==0) ? (!what || s) : !!what)) {
 syntax_error(s_ChanServ, u, "LEVELS", CHAN_LEVELS_SYNTAX);
    } else if (!(ci = get_channelinfo(chan))) {
 notice_lang(s_ChanServ, u, CHAN_X_NOT_REGISTERED, chan);
    } else if (ci->flags & CI_VERBOTEN) {
 notice_lang(s_ChanServ, u, CHAN_X_FORBIDDEN, chan);
    } else if (!is_founder(u, ci) && !is_services_admin(u)) {
 notice_lang(s_ChanServ, u, ACCESS_DENIED);
    } else if (stricmp(cmd, "SET") == 0) {
 if (readonly) {
     notice_lang(s_ChanServ, u, CHAN_LEVELS_READONLY);
     return;
 }
 level = atoi(s);
 if (level <= ACCLEV_INVALID || level >= ACCLEV_FOUNDER) {
     notice_lang(s_ChanServ, u, CHAN_LEVELS_RANGE,
   ACCLEV_INVALID+1, ACCLEV_FOUNDER-1);
     return;
 }
 for (i = 0; levelinfo[i].what >= 0; i++) {
     if (stricmp(levelinfo[i].name, what) == 0) {
  if (!ci->levels)
      reset_levels(ci, 1);
  ci->levels[levelinfo[i].what] = level;
  /* Special case: autoprotect ON -> autoowner ON */
  if (levelinfo[i].what == CA_AUTOPROTECT)
      ci->levels[CA_AUTOOWNER] = ACCLEV_FOUNDER;
  notice_lang(s_ChanServ, u, CHAN_LEVELS_CHANGED,
       levelinfo[i].name, chan, level);
  put_channelinfo(ci);
  return;
     }
 }
 notice_lang(s_ChanServ, u, CHAN_LEVELS_UNKNOWN, what, s_ChanServ);
    } else if (stricmp(cmd, "DIS") == 0 || stricmp(cmd, "DISABLE") == 0) {
 if (readonly) {
     notice_lang(s_ChanServ, u, CHAN_LEVELS_READONLY);
     return;
 }
 for (i = 0; levelinfo[i].what >= 0; i++) {
     if (stricmp(levelinfo[i].name, what) == 0) {
  if (!ci->levels)
      reset_levels(ci, 1);
  ci->levels[levelinfo[i].what] = ACCLEV_INVALID;
  /* Special case: autoprotect OFF -> autoowner OFF */
  if (levelinfo[i].what == CA_AUTOPROTECT)
      ci->levels[CA_AUTOOWNER] = ACCLEV_INVALID;
  notice_lang(s_ChanServ, u, CHAN_LEVELS_DISABLED,
       levelinfo[i].name, chan);
  put_channelinfo(ci);
  return;
     }
 }
 notice_lang(s_ChanServ, u, CHAN_LEVELS_UNKNOWN, what, s_ChanServ);
    } else if (stricmp(cmd, "LIST") == 0) {
 int i;
 notice_lang(s_ChanServ, u, CHAN_LEVELS_LIST_HEADER, chan);
 if (!levelinfo_maxwidth) {
     for (i = 0; levelinfo[i].what >= 0; i++) {
  int len = strlen(levelinfo[i].name);
  if (len > levelinfo_maxwidth)
      levelinfo_maxwidth = len;
     }
 }
 for (i = 0; levelinfo[i].what >= 0; i++) {
     int lev;
     if (!*levelinfo[i].name)
  continue;
     if (ci->levels)
  lev = ci->levels[levelinfo[i].what];
     else
  lev = def_levels[levelinfo[i].what];
     if (lev == ACCLEV_INVALID)
  notice_lang(s_ChanServ, u, CHAN_LEVELS_LIST_DISABLED,
       levelinfo_maxwidth, levelinfo[i].name);
     else if (lev == ACCLEV_FOUNDER)
  notice_lang(s_ChanServ, u, CHAN_LEVELS_LIST_FOUNDER,
       levelinfo_maxwidth, levelinfo[i].name);
     else
  notice_lang(s_ChanServ, u, CHAN_LEVELS_LIST_NORMAL,
       levelinfo_maxwidth, levelinfo[i].name, lev);
 }
    } else if (stricmp(cmd, "RESET") == 0) {
 if (readonly) {
     notice_lang(s_ChanServ, u, CHAN_LEVELS_DISABLED);
     return;
 }
 reset_levels(ci, 0);
 put_channelinfo(ci);
 notice_lang(s_ChanServ, u, CHAN_LEVELS_RESET, chan);
    } else {
 syntax_error(s_ChanServ, u, "LEVELS", CHAN_LEVELS_SYNTAX);
    }
}
/*************************************************************************/
/***************************** Module stuff ******************************/
/*************************************************************************/
const int32 module_version = MODULE_VERSION_CODE;
ConfigDirective module_config[] = {
    { NULL }
};
/*************************************************************************/
int init_module(Module *module_)
{
    module = module_;
    module_chanserv = find_module("chanserv/main");
    if (!module_chanserv) {
 module_log("Main ChanServ module not loaded");
 return 0;
    }
    use_module(module_chanserv);
    if (!register_commands(module_chanserv, cmds)) {
 module_log("Unable to register commands");
 exit_module(0);
 return 0;
    }
    if (!add_callback(module_chanserv, "HELP", do_help)) {
 module_log("Unable to add callbacks");
 exit_module(0);
 return 0;
    }
    return 1;
}
/*************************************************************************/
int exit_module(int shutdown_unused)
{
#ifdef CLEAN_COMPILE
    shutdown_unused = shutdown_unused;
#endif
    if (module_chanserv) {
 remove_callback(module_chanserv, "HELP", do_help);
 unregister_commands(module_chanserv, cmds);
 unuse_module(module_chanserv);
 module_chanserv = NULL;
    }
    return 1;
}
/*************************************************************************/