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tt-rss/include/sessions.php

192 lines
4.3 KiB
PHP

<?php
// Original from http://www.daniweb.com/code/snippet43.html
require_once "config.php";
require_once "db.php";
require_once "errorhandler.php";
require_once "lib/accept-to-gettext.php";
require_once "lib/gettext/gettext.inc";
require_once "version.php";
$session_expire = max(SESSION_COOKIE_LIFETIME, 86400);
$session_name = (!defined('TTRSS_SESSION_NAME')) ? "ttrss_sid" : TTRSS_SESSION_NAME;
if (@$_SERVER['HTTPS'] == "on") {
$session_name .= "_ssl";
ini_set("session.cookie_secure", true);
}
ini_set("session.gc_probability", 75);
ini_set("session.name", $session_name);
ini_set("session.use_only_cookies", true);
ini_set("session.gc_maxlifetime", $session_expire);
ini_set("session.cookie_lifetime", min(0, SESSION_COOKIE_LIFETIME));
global $session_connection;
function session_get_schema_version($link, $nocache = false) {
global $schema_version;
if (!$schema_version) {
$result = db_query($link, "SELECT schema_version FROM ttrss_version");
$version = db_fetch_result($result, 0, "schema_version");
$schema_version = $version;
return $version;
} else {
return $schema_version;
}
}
function validate_session($link) {
if (SINGLE_USER_MODE) return true;
if (!$link) return false;
if (VERSION != $_SESSION["version"]) return false;
$check_ip = $_SESSION['ip_address'];
switch (SESSION_CHECK_ADDRESS) {
case 0:
$check_ip = '';
break;
case 1:
$check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
break;
case 2:
$check_ip = substr($check_ip, 0, strrpos($check_ip, '.'));
$check_ip = substr($check_ip, 0, strrpos($check_ip, '.')+1);
break;
};
if ($check_ip && strpos($_SERVER['REMOTE_ADDR'], $check_ip) !== 0) {
$_SESSION["login_error_msg"] =
__("Session failed to validate (incorrect IP)");
return false;
}
if ($_SESSION["ref_schema_version"] != session_get_schema_version($link, true))
return false;
if (sha1($_SERVER['HTTP_USER_AGENT']) != $_SESSION["user_agent"])
return false;
if ($_SESSION["uid"]) {
$result = db_query($link,
"SELECT pwd_hash FROM ttrss_users WHERE id = '".$_SESSION["uid"]."'");
// user not found
if (db_num_rows($result) == 0) {
return false;
} else {
$pwd_hash = db_fetch_result($result, 0, "pwd_hash");
if ($pwd_hash != $_SESSION["pwd_hash"]) {
return false;
}
}
}
/* if ($_SESSION["cookie_lifetime"] && $_SESSION["uid"]) {
//print_r($_SESSION);
if (time() > $_SESSION["cookie_lifetime"]) {
return false;
}
} */
return true;
}
function ttrss_open ($s, $n) {
global $session_connection;
$session_connection = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
return true;
}
function ttrss_read ($id){
global $session_connection,$session_read;
$query = "SELECT data FROM ttrss_sessions WHERE id='$id'";
$res = db_query($session_connection, $query);
if (db_num_rows($res) != 1) {
return "";
} else {
$session_read = db_fetch_assoc($res);
$session_read["data"] = base64_decode($session_read["data"]);
return $session_read["data"];
}
}
function ttrss_write ($id, $data) {
if (! $data) {
return false;
}
global $session_connection, $session_read, $session_expire;
$expire = time() + $session_expire;
$data = db_escape_string($session_connection, base64_encode($data), false);
if ($session_read) {
$query = "UPDATE ttrss_sessions SET data='$data',
expire='$expire' WHERE id='$id'";
} else {
$query = "INSERT INTO ttrss_sessions (id, data, expire)
VALUES ('$id', '$data', '$expire')";
}
db_query($session_connection, $query);
return true;
}
function ttrss_close () {
global $session_connection;
//db_close($session_connection);
return true;
}
function ttrss_destroy ($id) {
global $session_connection;
$query = "DELETE FROM ttrss_sessions WHERE id = '$id'";
db_query($session_connection, $query);
return true;
}
function ttrss_gc ($expire) {
global $session_connection;
$query = "DELETE FROM ttrss_sessions WHERE expire < " . time();
db_query($session_connection, $query);
}
if (!SINGLE_USER_MODE /* && DB_TYPE == "pgsql" */) {
session_set_save_handler("ttrss_open",
"ttrss_close", "ttrss_read", "ttrss_write",
"ttrss_destroy", "ttrss_gc");
}
if (!defined('NO_SESSION_AUTOSTART')) {
if (isset($_COOKIE[session_name()])) {
@session_start();
}
}
?>