addvote.php: Pull out DB code

* Verifying a username exists should use already present valid_user function
* Create new functions in acctfuncs.inc.php with SQL queries from addvote.php
* Centralization of DB code important in a future transition to PDO interface

Signed-off-by: canyonknight <canyonknight@gmail.com>
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

web/html/addvote.php

@@ -12,40 +12,22 @@ html_header($title);
 
 if (isset($_COOKIE["AURSID"])) {
   $atype = account_from_sid($_COOKIE["AURSID"]);
+  $uid = uid_from_sid($_COOKIE["AURSID"]);
 } else {
   $atype = "";
 }
 
 if ($atype == "Trusted User" || $atype == "Developer") {
-	$dbh = db_connect();
 
 	if (!empty($_POST['addVote'])) {
 		$error = "";
 
 		if (!empty($_POST['user'])) {
-			$qcheck = "SELECT * FROM Users WHERE Username = '" . db_escape_string($_POST['user']) . "'";
-			$result = db_query($qcheck, $dbh);
-			if ($result) {
-				$check = mysql_num_rows($result);
-			}
-			else {
-				$check = 0;
-			}
-
-			if ($check == 0) {
+			if (!valid_user($_POST['user'])) {
 				$error.= __("Username does not exist.");
 			} else {
-				$qcheck = "SELECT * FROM TU_VoteInfo WHERE User = '" . db_escape_string($_POST['user']) . "'";
-				$qcheck.= " AND End > UNIX_TIMESTAMP()";
-				$result = db_query($qcheck, $dbh);
-				if ($result) {
-					$check = mysql_num_rows($result);
-				}
-				else {
-					$check = 0;
-				}
 
-				if ($check != 0) {
+				if (open_user_proposals($_POST['user'])) {
 					$error.= __("%s already has proposal running for them.", htmlentities($_POST['user']));
 				}
 			}
@@ -69,13 +51,8 @@ if ($atype == "Trusted User" || $atype == "Developer") {
 	}
 
 	if (!empty($_POST['addVote']) && empty($error)) {
-		$q = "INSERT INTO TU_VoteInfo (Agenda, User, Submitted, End, SubmitterID) VALUES ";
-		$q.= "('" . db_escape_string($_POST['agenda']) . "', ";
-		$q.= "'" . db_escape_string($_POST['user']) . "', ";
-		$q.= "UNIX_TIMESTAMP(), UNIX_TIMESTAMP() + " . db_escape_string($len);
-		$q.= ", " . uid_from_sid($_COOKIE["AURSID"]) . ")";
+		add_tu_proposal($_POST['agenda'], $_POST['user'], $len, $uid);
 
-		db_query($q, $dbh);
 		print "<p class=\"pkgoutput\">" . __("New proposal submitted.") . "</p>\n";
 	} else {
 ?>

web/lib/acctfuncs.inc.php

@@ -522,8 +522,13 @@ function valid_username($user) {
  * Checks if the username is valid and if it exists in the database
  * Returns the username ID or nothing
  */
-function valid_user($user, $dbh) {
+function valid_user($user, $dbh=NULL) {
 	/*	if ( $user = valid_username($user) ) { */
+
+	if(!$dbh) {
+		$dbh = db_connect();
+	}
+
 	if ( $user ) {
 		$q = "SELECT ID FROM Users WHERE Username = '"
 			. db_escape_string($user). "'";
@@ -538,6 +543,37 @@ function valid_user($user, $dbh) {
 	return;
 }
 
+# Check for any open proposals about a user. Used to prevent multiple proposals.
+function open_user_proposals($user, $dbh=NULL) {
+	if(!$dbh) {
+		$dbh = db_connect();
+	}
+	$q = "SELECT * FROM TU_VoteInfo WHERE User = '" . db_escape_string($user) . "'";
+	$q.= " AND End > UNIX_TIMESTAMP()";
+	$result = db_query($q, $dbh);
+	if (mysql_num_rows($result)) {
+		return true;
+	}
+	else {
+		return false;
+	}
+}
+
+# Creates a new trusted user proposal from entered agenda.
+# Optionally takes proposal about specific user. Length of vote set by submitter.
+function add_tu_proposal($agenda, $user, $votelength, $submitteruid, $dbh=NULL) {
+	if(!$dbh) {
+		$dbh = db_connect();
+	}
+	$q = "INSERT INTO TU_VoteInfo (Agenda, User, Submitted, End, SubmitterID) VALUES ";
+	$q.= "('" . db_escape_string($agenda) . "', ";
+	$q.= "'" . db_escape_string($user) . "', ";
+	$q.= "UNIX_TIMESTAMP(), UNIX_TIMESTAMP() + " . db_escape_string($votelength);
+	$q.= ", " . $submitteruid . ")";
+	db_query($q, $dbh);
+
+}
+
 function good_passwd($passwd) {
 	if ( strlen($passwd) >= PASSWD_MIN_LEN ) {
 		return true;