From 490867ebf7ca6451bf2304fd15dc8796716f6911 Mon Sep 17 00:00:00 2001
From: friendica <info@friendica.com>
Date: Fri, 4 Jan 2013 21:34:36 -0800
Subject: port "remember me" from Friendica

---
 include/auth.php     | 98 ++++++++++++++++++++++++++++++----------------------
 include/security.php |  4 +--
 2 files changed, 59 insertions(+), 43 deletions(-)

(limited to 'include')

diff --git a/include/auth.php b/include/auth.php
index 3f877cd1d..c12432449 100644
--- a/include/auth.php
+++ b/include/auth.php
@@ -4,6 +4,9 @@
 require_once('include/security.php');
 
 function nuke_session() {
+
+	new_cookie(0);
+
 	unset($_SESSION['authenticated']);
 	unset($_SESSION['account_id']);
 	unset($_SESSION['uid']);
@@ -61,14 +64,14 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
 		goaway(z_root());
 	}
 
-	if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
-		$r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
-			intval($_SESSION['visitor_id'])
-		);
-		if(count($r)) {
-			$a->contact = $r[0];
-		}
-	}
+//	if(x($_SESSION,'visitor_id') && (! x($_SESSION,'uid'))) {
+//		$r = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
+//			intval($_SESSION['visitor_id'])
+//		);
+//		if(count($r)) {
+//			$a->contact = $r[0];
+//		}
+//	}
 
 	if(x($_SESSION,'uid') || x($_SESSION,'account_id')) {
 
@@ -83,35 +86,30 @@ if((isset($_SESSION)) && (x($_SESSION,'authenticated')) && ((! (x($_POST,'auth-p
 			goaway(z_root());
 		}
 
-		if(x($_SESSION,'account_id')) {
-			$r = q("select * from account where account_id = %d limit 1",
-				intval($_SESSION['account_id'])
-			);
-			if(count($r) && (($r[0]['account_flags'] == ACCOUNT_OK) || ($r[0]['account_flags'] == ACCOUNT_UNVERIFIED))) {
-				get_app()->account = $r[0];
-				authenticate_success($r[0]);
-			}
-			else {
-				$_SESSION['account_id'] = 0;
-				nuke_session();
-				goaway(z_root());
+		$r = q("select * from account where account_id = %d limit 1",
+			intval($_SESSION['account_id'])
+		);
+
+		if(($r) && (($r[0]['account_flags'] == ACCOUNT_OK) || ($r[0]['account_flags'] == ACCOUNT_UNVERIFIED))) {
+			get_app()->account = $r[0];
+			$login_refresh = false;
+			if(! x($_SESSION,'last_login_date')) {
+				$_SESSION['last_login_date'] = datetime_convert('UTC','UTC');
 			}
+			if(strcmp(datetime_convert('UTC','UTC','now - 12 hours'), $_SESSION['last_login_date']) > 0 ) {
+				$_SESSION['last_login_date'] = datetime_convert();
+				$login_refresh = true;
+        	}
+        	authenticate_success($r[0], false, false, false, $login_refresh);
 		}
 		else {
-				$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey` 
-					FROM `user` WHERE `uid` = %d AND `blocked` = 0 
-					AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
-					intval($_SESSION['uid'])
-				);
-		}
-
-		if(! count($r)) {
+			$_SESSION['account_id'] = 0;
 			nuke_session();
 			goaway(z_root());
 		}
 
-		authenticate_success($r[0]);
 	}
+
 }
 else {
 
@@ -159,18 +157,6 @@ else {
 
 			logger('authenticate: ' . print_r(get_app()->account,true));
 
-
-			// process normal login request
-
-//			$r = q("SELECT `user`.*, `user`.`pubkey` as `upubkey`, `user`.`prvkey` as `uprvkey`  
-//				FROM `user` WHERE ( `email` = '%s' OR `nickname` = '%s' ) 
-//				AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
-//				dbesc(trim($_POST['username'])),
-//				dbesc(trim($_POST['username'])),
-//				dbesc($encrypted)
-//			);
-//			if(count($r))
-//				$record = $r[0];
 		}
 
 		if((! $record) || (! count($record))) {
@@ -179,9 +165,39 @@ else {
 			goaway(z_root());
   		}
 
+		// If the user specified to remember the authentication, then change the cookie
+		// to expire after one year (the default is when the browser is closed).
+		// If the user did not specify to remember, change the cookie to expire when the
+		// browser is closed. The reason this is necessary is because if the user
+		// specifies to remember, then logs out and logs back in without specifying to
+		// remember, the old "remember" cookie may remain and prevent the session from
+		// expiring when the browser is closed.
+		//
+		// It seems like I should be able to test for the old cookie, but for some reason when
+		// I read the lifetime value from session_get_cookie_params(), I always get '0'
+		// (i.e. expire when the browser is closed), even when there's a time expiration
+		// on the cookie
+
+		if($_POST['remember']) {
+			new_cookie(31449600); // one year
+		}
+		else {
+			new_cookie(0); // 0 means delete on browser exit
+		}
+
 		// if we haven't failed up this point, log them in.
 
+		$_SESSION['last_login_date'] = datetime_convert();
 		authenticate_success($record, true, true);
 	}
 }
 
+
+function new_cookie($time) {
+    $old_sid = session_id();
+    session_set_cookie_params("$time");
+    session_regenerate_id(false);
+
+    q("UPDATE session SET sid = '%s' WHERE sid = '%s'", dbesc(session_id()), dbesc($old_sid));
+}
+
diff --git a/include/security.php b/include/security.php
index ddfb8201d..276c8f97c 100644
--- a/include/security.php
+++ b/include/security.php
@@ -1,6 +1,6 @@
 <?php
 
-function authenticate_success($user_record, $login_initial = false, $interactive = false,$return = false) {
+function authenticate_success($user_record, $login_initial = false, $interactive = false,$return = false,$update_lastlog = false) {
 
 	$a = get_app();
 
@@ -15,7 +15,7 @@ function authenticate_success($user_record, $login_initial = false, $interactive
 		$_SESSION['account_id'] = $user_record['account_id'];
 		$_SESSION['authenticated'] = 1;
 		
-		if($login_initial) {
+		if($login_initial || $update_lastlog) {
 			q("update account set account_lastlog = '%s' where account_id = %d limit 1",
 				dbesc(datetime_convert()),
 				intval($_SESSION['account_id'])
-- 
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