/* AMX Mod X script.
*   Admin Base Plugin
*
* by the AMX Mod X Development Team
*  originally developed by OLO
*
* This file is part of AMX Mod X.
*
*
*  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
*
*  In addition, as a special exception, the author gives permission to
*  link the code of this program with the Half-Life Game Engine ("HL
*  Engine") and Modified Game Libraries ("MODs") developed by Valve,
*  L.L.C ("Valve"). You must obey the GNU General Public License in all
*  respects for all of the code used other than the HL Engine and MODs
*  from Valve. If you modify this file, you may extend this exception
*  to your version of the file, but you are not obligated to do so. If
*  you do not wish to do so, delete this exception statement from your
*  version.
*/

// Uncomment for SQL version
//#define USING_SQL

#include <amxmodx>
#include <amxmisc>
#if defined USING_SQL
#include <dbi>
#endif

#define MAX_ADMINS 64

new g_aPassword[MAX_ADMINS][32]
new g_aName[MAX_ADMINS][32]
new g_aFlags[MAX_ADMINS]
new g_aAccess[MAX_ADMINS]
new g_aNum = 0
new g_cmdLoopback[16]

public plugin_init()
{
#if defined USING_SQL
  register_plugin("Admin Base (SQL)",AMXX_VERSION_STR,"AMXX Dev Team")
#else
  register_plugin("Admin Base",AMXX_VERSION_STR,"AMXX Dev Team")
#endif
  register_cvar("amx_mode","1")
  register_cvar("amx_password_field","_pw")
  register_cvar("amx_default_access","")

  register_cvar("amx_vote_ratio","0.02")
  register_cvar("amx_vote_time","10")
  register_cvar("amx_vote_answers","1")
  register_cvar("amx_vote_delay","60")
  register_cvar("amx_last_voting","0")
  register_cvar("amx_show_activity","2")
  register_cvar("amx_votekick_ratio","0.40")
  register_cvar("amx_voteban_ratio","0.40")
  register_cvar("amx_votemap_ratio","0.40")

  set_cvar_float("amx_last_voting",0.0)
  
#if defined USING_SQL
  register_srvcmd("amx_sqladmins","adminSql")
  register_cvar("amx_sql_host","127.0.0.1")
  register_cvar("amx_sql_user","root")
  register_cvar("amx_sql_pass","")
  register_cvar("amx_sql_db","amx")
#endif

  register_concmd("amx_reloadadmins","cmdReload",ADMIN_ADMIN)

  format( g_cmdLoopback, 15, "amxauth%c%c%c%c" , 
  	random_num('A','Z') , random_num('A','Z') ,random_num('A','Z'),random_num('A','Z')  )
  	
  register_clcmd( g_cmdLoopback, "ackSignal" )

  remove_user_flags(0,read_flags("z")) // Remove 'user' flag from server rights
  
  new configsDir[64]
  get_configsdir(configsDir, 63)
  server_cmd("exec %s/amxx.cfg", configsDir) // Execute main configuration file
#if defined USING_SQL
  server_cmd("exec %s/sql.cfg;amx_sqladmins", configsDir)
#else
  format(configsDir, 63, "%s/users.ini", configsDir)
  loadSettings(configsDir) // Load admins accounts
#endif
}

public plugin_cfg()
{
  new configFile[64],curMap[32]
  get_configsdir(configFile,31)
  get_mapname(curMap,31)
  format(configFile,63,"%s/maps/%s.cfg",configFile,curMap)
  if ( file_exists(configFile) )
    server_cmd("exec %s",configFile)
}

#if !defined USING_SQL
loadSettings(szFilename[])
{
  if (!file_exists(szFilename)) return 0
    
  new szText[256], szFlags[32], szAccess[32]
  new a, pos = 0
  
  while ( g_aNum < MAX_ADMINS && read_file(szFilename,pos++,szText,255,a) ) 
  {         
    if ( szText[0] == ';' ) continue
    
    if ( parse(szText, g_aName[ g_aNum ] ,31, g_aPassword[ g_aNum ], 31, szAccess,31,szFlags,31 ) < 2 )
        continue
	
    g_aAccess[ g_aNum ] = read_flags(szAccess)
    if (!(g_aAccess[g_aNum] & ADMIN_USER) && !(g_aAccess[g_aNum] & ADMIN_ADMIN))
        g_aAccess[g_aNum] |= ADMIN_ADMIN

    g_aFlags[ g_aNum ] = read_flags( szFlags )  
    ++g_aNum
  }
  server_print("[AMXX] Loaded %d admin%s from file",g_aNum, (g_aNum == 1) ? "" : "s" )
  return 1
}
#endif

#if defined USING_SQL
public adminSql() {
  new host[64],user[32],pass[32],db[32],error[128]
  get_cvar_string("amx_sql_host",host,63)
  get_cvar_string("amx_sql_user",user,31)
  get_cvar_string("amx_sql_pass",pass,31)
  get_cvar_string("amx_sql_db",db,31)
  
  new Sql:sql = dbi_connect(host,user,pass,db,error,127)
  if (sql <= SQL_FAILED) {
    server_print("[AMXX] SQL error: can't connect: '%s'",error)
    return PLUGIN_HANDLED 
  }

  dbi_query(sql,"CREATE TABLE IF NOT EXISTS admins ( auth varchar(32) NOT NULL default '', password varchar(32) NOT NULL default '', access varchar(32) NOT NULL default '', flags varchar(32) NOT NULL default '' )")
  
  new Result:Res = dbi_query(sql,"SELECT auth,password,access,flags FROM admins")

  if (Res == RESULT_FAILED) {
    dbi_error(sql,error,127)
    server_print("[AMXX] SQL error: can't load admins: '%s'",error)
    dbi_free_result(Res)
    dbi_close(Sql)
    return PLUGIN_HANDLED
  }
  else if (Res == RESULT_NONE) {
    server_print("[AMXX] No admins found.")
    dbi_free_result(Res)
    dbi_close(Sql)
    return PLUGIN_HANDLED
  }

  new szFlags[32],szAccess[32]
  g_aNum = 0
  while( dbi_nextrow(Res) > 0 )
  {
    dbi_result(Res, "auth", g_aName[g_aNum], 31)
    dbi_result(Res, "password", g_aPassword[g_aNum], 31)
    dbi_result(Res, "access", szAccess, 31)
    dbi_result(Res, "flags", szFlags, 31)

    g_aAccess[ g_aNum ] = read_flags( szAccess )

    g_aFlags[ g_aNum ] = read_flags( szFlags )
    ++g_aNum
  }

  server_print("[AMXX] Loaded %d admin%s from database",g_aNum, (g_aNum == 1) ? "" : "s" )
  dbi_free_result(Res)
  dbi_close(sql)
  return PLUGIN_HANDLED
}
#endif

public cmdReload(id,level,cid)
{
  if (!cmd_access(id,level,cid,1))
    return PLUGIN_HANDLED

#if !defined USING_SQL
  new filename[128]
  get_configsdir(filename,127)
  format(filename,63,"%s/users.ini", filename)

  g_aNum = 0
  loadSettings(filename) // Re-Load admins accounts
#else
  adminSql()
#endif

  return PLUGIN_HANDLED
}

getAccess(id,name[],authid[],ip[], password[])
{
  new index = -1
  new result = 0
  for(new i = 0; i < g_aNum; ++i) {
    if (g_aFlags[i] & FLAG_AUTHID) {
      if (equal(authid,g_aName[i])) {
        index = i
        break
      }
    }
    else if (g_aFlags[i] & FLAG_IP) {
      new c = strlen( g_aName[i] )
      if ( g_aName[i][ c - 1 ] == '.' ) { /* check if this is not a xxx.xxx. format */
        if (  equal( g_aName[i] , ip , c ) ) {
          index = i
          break
        }
      } /* in other case an IP must just match */
      else  if ( equal(ip,g_aName[i]) ){
        index = i
        break
      }
    }
    else {
      if (g_aFlags[i] & FLAG_TAG) {
        if (contain(name,g_aName[i])!=-1){
          index = i
          break
        }
      }
      else if (equal(name,g_aName[i])) {
        index = i
        break
      }
    }
  }
  if (index != -1) {
    if (g_aFlags[index] & FLAG_NOPASS){
      result |= 8
      new sflags[32]
      get_flags(g_aAccess[index],sflags,31)
      set_user_flags(id,g_aAccess[index])
      log_amx("Login: ^"%s<%d><%s><>^" became an admin (account ^"%s^") (access ^"%s^") (address ^"%s^")",
        name,get_user_userid(id),authid,g_aName[index] ,sflags,ip)
    }
    else if (equal(password,g_aPassword[index])) {
      result |= 12
      set_user_flags(id,g_aAccess[index])
      new sflags[32]
      get_flags(g_aAccess[index],sflags,31)
      log_amx("Login: ^"%s<%d><%s><>^" became an admin (account ^"%s^") (access ^"%s^") (address ^"%s^")",
        name,get_user_userid(id),authid,g_aName[index] ,sflags,ip)
    }
    else {
      result |= 1
      if (g_aFlags[index] & FLAG_KICK){
        result |= 2
        log_amx("Login: ^"%s<%d><%s><>^" kicked due to invalid password (account ^"%s^") (address ^"%s^")",
          name,get_user_userid(id),authid,g_aName[index],ip)
      }
    }
  }
  else if (get_cvar_float("amx_mode")==2.0) {
    result |= 2
  }
  else {
    new defaccess[32]
    get_cvar_string("amx_default_access",defaccess,31)
    if (!strlen(defaccess))
      copy(defaccess, 32, "z")
    new idefaccess = read_flags(defaccess)
    if (idefaccess){
      result |= 8
      set_user_flags(id,idefaccess)
    }
  }   
  
  return result
}

accessUser( id, name[] = "" )
{
  remove_user_flags(id)
  new userip[32],userauthid[32],password[32],passfield[32],username[32] 
  get_user_ip(id,userip,31,1) 
  get_user_authid(id,userauthid,31)
  if ( name[0] ) copy( username , 31, name)
  else get_user_name(id,username,31 )
  get_cvar_string("amx_password_field",passfield,31) 
  get_user_info(id,passfield,password,31) 
  new result = getAccess(id,username,userauthid,userip,password) 
  if (result & 1) client_cmd(id,"echo ^"* Invalid Password!^"")
  if (result & 2) {
    client_cmd(id,g_cmdLoopback)
    return PLUGIN_HANDLED
  }
  if (result & 4) client_cmd(id,"echo ^"* Password accepted^"")
  if (result & 8) client_cmd(id,"echo ^"* Privileges set^"")
  return PLUGIN_CONTINUE
}

public client_infochanged(id)
{ 
  if ( !is_user_connected(id) || !get_cvar_num("amx_mode") ) 
    return PLUGIN_CONTINUE
  
  new newname[32], oldname[32]
  get_user_name(id,oldname,31) 
  get_user_info(id,"name",newname,31) 
  
  if ( !equal(newname,oldname) )
    accessUser( id, newname )
  
  return PLUGIN_CONTINUE
}

public ackSignal(id)
	server_cmd("kick #%d ^"You have no entry to the server...^"", get_user_userid(id)  )

public client_authorized(id)
  return get_cvar_num( "amx_mode" ) ? accessUser( id ) : PLUGIN_CONTINUE