1 files changed, 50 insertions, 0 deletions
diff --git a/includes/lib/general.php b/includes/lib/general.php
new file mode 100644
index 0000000..25d2561
--- /dev/null
+++ b/includes/lib/general.php
@@ -0,0 +1,50 @@
+<? /*
+    LibreSSL - CAcert web application
+    Copyright (C) 2004-2011  CAcert Inc.
+
+    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; version 2 of the License.
+
+    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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+/**
+ * Checks if the user may log in and retrieve the user id
+ * 
+ * Usually called with $_SERVER['SSL_CLIENT_M_SERIAL'] and
+ * 	$_SERVER['SSL_CLIENT_I_DN_CN']
+ * 
+ * @param $serial string
+ * 	usually $_SERVER['SSL_CLIENT_M_SERIAL']
+ * @param $issuer_cn string
+ * 	usually $_SERVER['SSL_CLIENT_I_DN_CN']
+ * @return int
+ * 	the user id, -1 in case of error
+ */
+function get_user_id_from_cert($serial, $issuer_cn)
+{
+	$query = "select `memid` from `emailcerts` where
+			`serial`='".mysql_escape_string($serial)."' and
+			`rootcert`= (select `id` from `root_certs` where
+				`Cert_Text`='".mysql_escape_string($issuer_cn)."') and
+			`revoked`=0 and disablelogin=0 and
+			UNIX_TIMESTAMP(`expire`) - UNIX_TIMESTAMP() > 0";
+	$res = mysql_query($query);
+	if(mysql_num_rows($res) > 0)
+	{
+		$row = mysql_fetch_assoc($res);
+		return intval($row['memid']);
+	}
+	
+	return -1;
+}
+
+?>