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+<?php
+
+# Helper function- retrieve request param if available, "" otherwise
+function in_request($name) {
+ if (isset($_REQUEST[$name])) {
+ return $_REQUEST[$name];
+ }
+ return "";
+}
+
+# Display the standard Account form, pass in default values if any
+
+function display_account_form($UTYPE,$A,$U="",$T="",$S="",
+ $E="",$P="",$C="",$R="",$L="",$I="",$UID=0) {
+ # UTYPE: what user type the form is being displayed for
+ # A: what "form" name to use
+ # U: value to display for username
+ # T: value to display for account type
+ # S: value to display for account suspended
+ # E: value to display for email address
+ # P: password value
+ # C: confirm password value
+ # R: value to display for RealName
+ # L: value to display for Language preference
+ # I: value to display for IRC nick
+ # N: new package notify value
+ # UID: Users.ID value in case form is used for editing
+
+ global $SUPPORTED_LANGS;
+
+ print "<form action='account.php' method='post'>\n";
+ print "<fieldset>";
+ print "<input type='hidden' name='Action' value='".$A."' />\n";
+ if ($UID) {
+ print "<input type='hidden' name='ID' value='".$UID."' />\n";
+ }
+ print "</fieldset>";
+ print "<table border='0' cellpadding='0' cellspacing='0' width='80%' style=\"margin:0 auto;\">\n";
+ print "<tr><td colspan='2'>&nbsp;</td></tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("Username").":</td>";
+ print "<td align='left'><input type='text' size='30' maxlength='64'";
+ print " name='U' value='".htmlspecialchars($U,ENT_QUOTES)."' /> (".__("required").")</td>";
+ print "</tr>\n";
+
+ # Only TUs or Devs can promote/demote/suspend a user
+ if ($UTYPE == "Trusted User" || $UTYPE == "Developer") {
+ print "<tr>";
+ print "<td align='left'>".__("Account Type").":</td>";
+ print "<td align='left'><select name=T>\n";
+ print "<option value='1'";
+ $T == "User" ? print " selected>" : print ">";
+ print __("Normal user")."\n";
+ print "<option value='2'";
+ $T == "Trusted User" ? print " selected>" : print ">";
+ print __("Trusted user")."\n";
+
+ # Only developers can make another account a developer
+ if ($UTYPE == "Developer") {
+ print "<option value='3'";
+ $T == "Developer" ? print " selected>" : print ">";
+ print __("Developer")."\n";
+ }
+ print "</select></td>";
+ print "</tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("Account Suspended").":</td>";
+ print "<td align='left'><input type='checkbox' name='S'";
+ if ($S) {
+ print " checked=\"checked\" />";
+ } else {
+ print " />";
+ }
+ print "</tr>\n";
+ }
+
+ print "<tr>";
+ print "<td align='left'>".__("Email Address").":</td>";
+ print "<td align='left'><input type='text' size='30' maxlength='64'";
+ print " name='E' value='".htmlspecialchars($E,ENT_QUOTES)."' /> (".__("required").")</td>";
+ print "</tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("Password").":</td>";
+ print "<td align='left'><input type='password' size='30' maxlength='32'";
+ print " name='P' value='".$P."' />";
+ if ($A != "UpdateAccount") {
+ print " (".__("required").")";
+ }
+ print "</td></tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("Re-type password").":</td>";
+ print "<td align='left'><input type='password' size='30' maxlength='32'";
+ print " name='C' value='".$C."' />";
+ if ($A != "UpdateAccount") {
+ print " (".__("required").")";
+ }
+ print "</td></tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("Real Name").":</td>";
+ print "<td align='left'><input type='text' size='30' maxlength='32'";
+ print " name='R' value='".htmlspecialchars($R,ENT_QUOTES)."' /></td>";
+ print "</tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("IRC Nick").":</td>";
+ print "<td align='left'><input type='text' size='30' maxlength='32'";
+ print " name='I' value='".htmlspecialchars($I,ENT_QUOTES)."' /></td>";
+ print "</tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>".__("Language").":</td>";
+ print "<td align='left'><select name=L>\n";
+
+ reset($SUPPORTED_LANGS);
+ while (list($code, $lang) = each($SUPPORTED_LANGS)) {
+ if ($L == $code) {
+ print "<option value=".$code." selected> ".$lang."\n";
+ } else {
+ print "<option value=".$code."> ".$lang."\n";
+ }
+ }
+ print "</select></td>";
+ print "</tr>\n";
+
+ print "<tr><td colspan='2'>&nbsp;</td></tr>\n";
+ print "<tr>";
+ print "<td>&nbsp;</td>";
+ print "<td align='left'>";
+
+ if ($A == "UpdateAccount") {
+ print "<input type='submit' class='button'";
+ print " value='".__("Update")."' /> &nbsp; ";
+ } else {
+ print "<input type='submit' class='button'";
+ print " value='".__("Create")."' /> &nbsp; ";
+ }
+ print "<input type='reset' class='button' value='".__("Reset")."' />";
+ print "</td>";
+ print "</tr>\n";
+
+ print "</table>\n";
+ print "</form>\n";
+ return;
+} # function display_account_form()
+
+
+# process form input from a new/edit account form
+#
+function process_account_form($UTYPE,$TYPE,$A,$U="",$T="",$S="",$E="",
+ $P="",$C="",$R="",$L="",$I="",$UID=0) {
+ # UTYPE: The user's account type
+ # TYPE: either "edit" or "new"
+ # A: what parent "form" name to use
+ # U: value to display for username
+ # T: value to display for account type
+ # S: value to display for account suspended
+ # E: value to display for email address
+ # P: password value
+ # C: confirm password value
+ # R: value to display for RealName
+ # L: value to display for Language preference
+ # I: value to display for IRC nick
+ # N: new package notify value
+ # UID: database Users.ID value
+
+ # error check and process request for a new/modified account
+ global $SUPPORTED_LANGS;
+
+ if(isset($_COOKIE['AURSID'])) {
+ $editor_user = uid_from_sid($_COOKIE['AURSID']);
+ }
+ else {
+ $editor_user = null;
+ }
+
+ $dbh = db_connect();
+ $error = "";
+ if (empty($E) || empty($U)) {
+ $error = __("Missing a required field.");
+ }
+
+ if ($TYPE == "new") {
+ # they need password fields for this type of action
+ #
+ if (empty($P) || empty($C)) {
+ $error = __("Missing a required field.");
+ }
+ } else {
+ if (!$UID) {
+ $error = __("Missing User ID");
+ }
+ }
+
+ if (!$error && !valid_username($U) && !user_is_privileged($editor_user))
+ $error = __("The username is invalid.") . "<ul>\n"
+ ."<li>" . __("It must be between %s and %s characters long",
+ USERNAME_MIN_LEN, USERNAME_MAX_LEN )
+ . "</li>"
+ . "<li>" . __("Start and end with a letter or number") . "</li>"
+ . "<li>" . __("Can contain only one period, underscore or hyphen.")
+ . "</li>\n</ul>";
+
+ if (!$error && $P && $C && ($P != $C)) {
+ $error = __("Password fields do not match.");
+ }
+ if (!$error && $P != '' && !good_passwd($P))
+ $error = __("Your password must be at least %s characters.",PASSWD_MIN_LEN);
+
+ if (!$error && !valid_email($E)) {
+ $error = __("The email address is invalid.");
+ }
+ if ($UTYPE == "Trusted User" && $T == 3) {
+ $error = __("A Trusted User cannot assign Developer status.");
+ }
+ if (!$error && !array_key_exists($L, $SUPPORTED_LANGS)) {
+ $error = __("Language is not currently supported.");
+ }
+ if (!$error) {
+ # check to see if this username is available
+ # NOTE: a race condition exists here if we care...
+ #
+ $q = "SELECT COUNT(*) AS CNT FROM Users ";
+ $q.= "WHERE Username = '".mysql_real_escape_string($U)."'";
+ if ($TYPE == "edit") {
+ $q.= " AND ID != ".intval($UID);
+ }
+ $result = db_query($q, $dbh);
+ if ($result) {
+ $row = mysql_fetch_array($result);
+ if ($row[0]) {
+ $error = __("The username, %h%s%h, is already in use.",
+ "<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
+ }
+ }
+ }
+ if (!$error) {
+ # check to see if this email address is available
+ # NOTE: a race condition exists here if we care...
+ #
+ $q = "SELECT COUNT(*) AS CNT FROM Users ";
+ $q.= "WHERE Email = '".mysql_real_escape_string($E)."'";
+ if ($TYPE == "edit") {
+ $q.= " AND ID != ".intval($UID);
+ }
+ $result = db_query($q, $dbh);
+ if ($result) {
+ $row = mysql_fetch_array($result);
+ if ($row[0]) {
+ $error = __("The address, %h%s%h, is already in use.",
+ "<b>", htmlspecialchars($E,ENT_QUOTES), "</b>");
+ }
+ }
+ }
+ if ($error) {
+ print "<span class='error'>".$error."</span><br/>\n";
+ display_account_form($UTYPE, $A, $U, $T, $S, $E, "", "",
+ $R, $L, $I, $UID);
+ } else {
+ if ($TYPE == "new") {
+ # no errors, go ahead and create the unprivileged user
+ $salt = generate_salt();
+ $P = salted_hash($P, $salt);
+ $escaped = array_map('mysql_real_escape_string',
+ array($U, $E, $P, $salt, $R, $L, $I));
+ $q = "INSERT INTO Users (" .
+ "AccountTypeID, Suspended, Username, Email, Passwd, Salt" .
+ ", RealName, LangPreference, IRCNick) " .
+ "VALUES (1, 0, '" . implode("', '", $escaped) . "')";
+ $result = db_query($q, $dbh);
+ if (!$result) {
+ print __("Error trying to create account, %h%s%h: %s.",
+ "<b>", htmlspecialchars($U,ENT_QUOTES), "</b>", mysql_error($dbh));
+ } else {
+ # account created/modified, tell them so.
+ #
+ print __("The account, %h%s%h, has been successfully created.",
+ "<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
+ print "<p>\n";
+ print __("Click on the Home link above to login.");
+ print "</p>\n";
+ }
+
+ } else {
+ # no errors, go ahead and modify the user account
+
+ $q = "UPDATE Users SET ";
+ $q.= "Username = '".mysql_real_escape_string($U)."'";
+ if ($T) {
+ $q.= ", AccountTypeID = ".intval($T);
+ }
+ if ($S) {
+ $q.= ", Suspended = 1";
+ } else {
+ $q.= ", Suspended = 0";
+ }
+ $q.= ", Email = '".mysql_real_escape_string($E)."'";
+ if ($P) {
+ $salt = generate_salt();
+ $hash = salted_hash($P, $salt);
+ $q .= ", Passwd = '$hash', Salt = '$salt'";
+ }
+ $q.= ", RealName = '".mysql_real_escape_string($R)."'";
+ $q.= ", LangPreference = '".mysql_real_escape_string($L)."'";
+ $q.= ", IRCNick = '".mysql_real_escape_string($I)."'";
+ $q.= " WHERE ID = ".intval($UID);
+ $result = db_query($q, $dbh);
+ if (!$result) {
+ print __("Error trying to modify account, %h%s%h: %s.",
+ "<b>", htmlspecialchars($U,ENT_QUOTES), "</b>", mysql_error($dbh));
+ } else {
+ print __("The account, %h%s%h, has been successfully modified.",
+ "<b>", htmlspecialchars($U,ENT_QUOTES), "</b>");
+ }
+ }
+ }
+ return;
+}
+
+# search existing accounts
+#
+function search_accounts_form() {
+ include("search_accounts_form.php");
+ return;
+}
+
+
+# search results page
+#
+function search_results_page($UTYPE,$O=0,$SB="",$U="",$T="",
+ $S="",$E="",$R="",$I="") {
+ # UTYPE: what account type the user belongs to
+ # O: what row offset we're at
+ # SB: how to sort the results
+ # U: value to display for username
+ # T: value to display for account type
+ # S: value to display for account suspended
+ # E: value to display for email address
+ # R: value to display for RealName
+ # I: value to display for IRC nick
+
+ $HITS_PER_PAGE = 50;
+ if ($O) {
+ $OFFSET = intval($O);
+ } else {
+ $OFFSET = 0;
+ }
+ if ($OFFSET < 0) {
+ $OFFSET = 0;
+ }
+ $search_vars = array();
+
+ $q = "SELECT Users.*, AccountTypes.AccountType ";
+ $q.= "FROM Users, AccountTypes ";
+ $q.= "WHERE AccountTypes.ID = Users.AccountTypeID ";
+ if ($T == "u") {
+ $q.= "AND AccountTypes.ID = 1 ";
+ $search_vars[] = "T";
+ } elseif ($T == "t") {
+ $q.= "AND AccountTypes.ID = 2 ";
+ $search_vars[] = "T";
+ } elseif ($T == "d") {
+ $q.= "AND AccountTypes.ID = 3 ";
+ $search_vars[] = "T";
+ }
+ if ($S) {
+ $q.= "AND Users.Suspended = 1 ";
+ $search_vars[] = "S";
+ }
+ if ($U) {
+ $q.= "AND Username LIKE '%".mysql_real_escape_string($U)."%' ";
+ $search_vars[] = "U";
+ }
+ if ($E) {
+ $q.= "AND Email LIKE '%".mysql_real_escape_string($E)."%' ";
+ $search_vars[] = "E";
+ }
+ if ($R) {
+ $q.= "AND RealName LIKE '%".mysql_real_escape_string($R)."%' ";
+ $search_vars[] = "R";
+ }
+ if ($I) {
+ $q.= "AND IRCNick LIKE '%".mysql_real_escape_string($I)."%' ";
+ $search_vars[] = "I";
+ }
+ switch ($SB) {
+ case 't':
+ $q.= "ORDER BY AccountTypeID, Username ";
+ break;
+ case 'r':
+ $q.= "ORDER BY RealName, AccountTypeID ";
+ break;
+ case 'i':
+ $q.= "ORDER BY IRCNick, AccountTypeID ";
+ break;
+ case 'v':
+ $q.= "ORDER BY LastVoted, Username ";
+ break;
+ default:
+ $q.= "ORDER BY Username, AccountTypeID ";
+ break;
+ }
+ $search_vars[] = "SB";
+ $q.= "LIMIT " . $HITS_PER_PAGE . " OFFSET " . $OFFSET;
+
+ $dbh = db_connect();
+
+ $result = db_query($q, $dbh);
+ if (!$result) {
+ print __("No results matched your search criteria.");
+ } else {
+ $num_rows = mysql_num_rows($result);
+ if ($num_rows) {
+ print "<table border='0' cellpadding='0'";
+ print " cellspacing='0' width='90%'";
+ print " style=\"margin:0 auto\">\n";
+ print "<tr>";
+ print "<td colspan='2'>";
+ print "<table border='0' cellpadding='0'";
+ print " cellspacing='0' width='100%'>\n";
+ print "<tr>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("Username")."</span></th>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("Type")."</span></th>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("Status")."</span></th>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("Real Name")."</span></th>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("IRC Nick")."</span></th>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("Last Voted")."</span></th>";
+ print "<th class='header'>";
+ print "<span class='f2'>".__("Edit Account")."</span></th>";
+ print "</tr>\n";
+ $i = 0;
+ while ($row = mysql_fetch_assoc($result)) {
+ if ($i % 2) {
+ $c = "data1";
+ } else {
+ $c = "data2";
+ }
+ print "<tr>";
+ print "<td class='".$c."'>";
+ print "<span class='f5'><a href='packages.php?SeB=m&amp;K=".$row["Username"]."'>".$row["Username"]."</a></span></td>";
+ print "<td class='".$c."'>";
+ print "<span class='f5'>".$row["AccountType"];
+ print "</span></td>";
+ print "<td class='".$c."'><span class='f5'>";
+ if ($row["Suspended"]) {
+ print __("Suspended");
+ } else {
+ print __("Active");
+ }
+ print "</span></td>";
+ print "<td class='".$c."'><span class='f5'>";
+ $row["RealName"] ? print htmlspecialchars($row["RealName"],ENT_QUOTES) : print "&nbsp;";
+ print "</span></td>";
+ print "<td class='".$c."'><span class='f5'>";
+ $row["IRCNick"] ? print htmlspecialchars($row["IRCNick"],ENT_QUOTES) : print "&nbsp;";
+ print "</span></td>";
+ print "<td class='".$c."'><span class='f5'>";
+ $row["LastVoted"]
+ ? print date("Ymd", $row["LastVoted"])
+ : print __("Never");
+ print "</span></td>";
+ print "<td class='".$c."'><span class='f5'>";
+ if ($UTYPE == "Trusted User" && $row["AccountType"] == "Developer") {
+ # TUs can't edit devs
+ #
+ print "&nbsp;</span></td>";
+ } else {
+ $edit_url = "account.php?Action=DisplayAccount&amp;ID=".$row["ID"];
+ print "<a href='".$edit_url . "'>";
+ print "Edit</a></span></td>";
+ }
+ print "</tr>\n";
+ $i++;
+ }
+ print "</table>\n";
+ print "</td></tr>\n";
+
+ print "<tr>";
+ print "<td align='left'>";
+ print "<form action='account.php' method='post'>\n";
+ print "<fieldset>";
+ print "<input type='hidden' name='Action' value='SearchAccounts' />\n";
+ print "<input type='hidden' name='O'";
+ print " value='".($OFFSET-$HITS_PER_PAGE)."' />\n";
+ reset($search_vars);
+ while (list($k, $ind) = each($search_vars)) {
+ print "<input type='hidden' name='".$ind."'";
+ print " value='".${$ind}."' />\n";
+ }
+ print "<input type='submit' class='button'";
+ print " value='&lt;-- ".__("Less")."' />";
+ print "</fieldset>";
+ print "</form>\n";
+ print "</td>";
+ print "<td align='right'>";
+ print "<form action='account.php' method='post'>\n";
+ print "<fieldset>";
+ print "<input type='hidden' name='Action' value='SearchAccounts' />\n";
+ print "<input type='hidden' name='O'";
+ print " value='".($OFFSET+$HITS_PER_PAGE)."' />\n";
+ reset($search_vars);
+ while (list($k, $ind) = each($search_vars)) {
+ print "<input type='hidden' name='".$ind."'";
+ print " value='".${$ind}."' />\n";
+ }
+ print "<input type='submit' class='button'";
+ print " value='".__("More")." --&gt;' />";
+ print "</fieldset>";
+ print "</form>\n";
+ print "</td>";
+ print "</tr>\n";
+ print "</table>\n";
+ } else {
+ print "<p style=\"text-align:center;\">\n";
+ print __("No more results to display.");
+ print "</p>\n";
+ }
+ }
+ return;
+}
+
+# Display non-editable account info
+#
+function display_account_info($U="", $T="", $E="", $R="", $I="") {
+ # U: value to display for username
+ # T: value to display for account type
+ # E: value to display for email address
+ # R: value to display for RealName
+ # I: value to display for IRC nick
+
+ global $SUPPORTED_LANGS;
+
+ print "<table border='0' cellpadding='0' cellspacing='0' width='33%' style=\"margin:0 auto;\">\n";
+ print " <tr>\n";
+ print " <td colspan='2'>&nbsp;</td>\n";
+ print " </tr>\n";
+
+ print " <tr>\n";
+ print " <td align='left'>".__("Username").":</td>\n";
+ print " <td align='left'>".$U."</td>\n";
+ print " </tr>\n";
+
+ print " <tr>\n";
+ print " <td align='left'>".__("Account Type").":</td>\n";
+ print " <td align='left'>";
+ if ($T == "User") {
+ print __("User");
+ } elseif ($T == "Trusted User") {
+ print __("Trusted User");
+ } elseif ($T == "Developer") {
+ print __("Developer");
+ }
+ print " </td>\n";
+ print " </tr>\n";
+
+ print " <tr>\n";
+ print " <td align='left'>".__("Email Address").":</td>\n";
+ print " <td align='left'><a href='mailto:".htmlspecialchars($E,ENT_QUOTES)."'>".htmlspecialchars($E,ENT_QUOTES)."</a></td>\n";
+ print " </tr>\n";
+
+ print " <tr>\n";
+ print " <td align='left'>".__("Real Name").":</td>\n";
+ print " <td align='left'>".htmlspecialchars($R,ENT_QUOTES)."</td>\n";
+ print " </tr>\n";
+
+ print " <tr>\n";
+ print " <td align='left'>".__("IRC Nick").":</td>\n";
+ print " <td align='left'>".htmlspecialchars($I,ENT_QUOTES)."</td>\n";
+ print " </tr>\n";
+
+ print " <tr>\n";
+ print " <td colspan='2'><a href='packages.php?K=".$U."&amp;SeB=m'>".__("View this user's packages")."</a></td>\n";
+ print " </tr>\n";
+
+ print "</table>\n";
+ return;
+}
+
+/*
+ * Returns SID (Session ID) and error (error message) in an array
+ * SID of 0 means login failed.
+ */
+function try_login() {
+ global $MAX_SESSIONS_PER_USER, $PERSISTENT_COOKIE_TIMEOUT;
+
+ $login_error = "";
+ $new_sid = "";
+ $userID = null;
+
+ if ( isset($_REQUEST['user']) || isset($_REQUEST['passwd']) ) {
+
+ $userID = valid_user($_REQUEST['user']);
+
+ if ( user_suspended( $userID ) ) {
+ $login_error = "Account Suspended.";
+ }
+ elseif ( $userID && isset($_REQUEST['passwd'])
+ && valid_passwd($userID, $_REQUEST['passwd']) ) {
+
+ $logged_in = 0;
+ $num_tries = 0;
+
+ # Account looks good. Generate a SID and store it.
+
+ $dbh = db_connect();
+ while (!$logged_in && $num_tries < 5) {
+ if ($MAX_SESSIONS_PER_USER) {
+ # Delete all user sessions except the
+ # last ($MAX_SESSIONS_PER_USER - 1).
+ $q = "DELETE s.* FROM Sessions s ";
+ $q.= "LEFT JOIN (SELECT SessionID FROM Sessions ";
+ $q.= "WHERE UsersId = " . $userID . " ";
+ $q.= "ORDER BY LastUpdateTS DESC ";
+ $q.= "LIMIT " . ($MAX_SESSIONS_PER_USER - 1) . ") q ";
+ $q.= "ON s.SessionID = q.SessionID ";
+ $q.= "WHERE s.UsersId = " . $userID . " ";
+ $q.= "AND q.SessionID IS NULL;";
+ db_query($q, $dbh);
+ }
+
+ $new_sid = new_sid();
+ $q = "INSERT INTO Sessions (UsersID, SessionID, LastUpdateTS)"
+ ." VALUES (" . $userID . ", '" . $new_sid . "', UNIX_TIMESTAMP())";
+ $result = db_query($q, $dbh);
+
+ # Query will fail if $new_sid is not unique
+ if ($result) {
+ $logged_in = 1;
+ break;
+ }
+
+ $num_tries++;
+ }
+
+ if ($logged_in) {
+ # set our SID cookie
+
+ if (isset($_POST['remember_me']) &&
+ $_POST['remember_me'] == "on") {
+ # Set cookies for 30 days.
+ $cookie_time = time() + $PERSISTENT_COOKIE_TIMEOUT;
+
+ # Set session for 30 days.
+ $q = "UPDATE Sessions SET LastUpdateTS = $cookie_time ";
+ $q.= "WHERE SessionID = '$new_sid'";
+ db_query($q, $dbh);
+ }
+ else
+ $cookie_time = 0;
+
+ setcookie("AURSID", $new_sid, $cookie_time, "/");
+ header("Location: " . $_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING']);
+ $login_error = "";
+
+ }
+ else {
+ $login_error = "Error trying to generate session id.";
+ }
+ }
+ else {
+ $login_error = __("Bad username or password.");
+ }
+ }
+ return array('SID' => $new_sid, 'error' => $login_error);
+}
+
+/*
+ * Only checks if the name itself is valid
+ * Longer or equal to USERNAME_MIN_LEN
+ * Shorter or equal to USERNAME_MAX_LEN
+ * Starts and ends with a letter or number
+ * Contains at most ONE dot, hyphen, or underscore
+ * Returns the username if it is valid
+ * Returns nothing if it isn't valid
+ */
+function valid_username( $user )
+{
+ if (!empty($user)) {
+
+ #Is username at not too short or too long?
+ if ( strlen($user) >= USERNAME_MIN_LEN &&
+ strlen($user) <= USERNAME_MAX_LEN ) {
+
+ $user = strtolower($user);
+ # Does username:
+ # start and end with a letter or number
+ # contain only letters and numbers,
+ # and at most has one dash, period, or underscore
+ if ( preg_match("/^[a-z0-9]+[.\-_]?[a-z0-9]+$/", $user) ) {
+ #All is good return the username
+ return $user;
+ }
+ }
+ }
+
+ return;
+}
+
+/*
+ * Checks if the username is valid and if it exists in the database
+ * Returns the username ID or nothing
+ */
+function valid_user( $user )
+{
+ /* if ( $user = valid_username($user) ) { */
+ if ( $user ) {
+ $dbh = db_connect();
+ $q = "SELECT ID FROM Users WHERE Username = '"
+ . mysql_real_escape_string($user). "'";
+
+ $result = db_query($q, $dbh);
+ # Is the username in the database?
+ if ($result) {
+ $row = mysql_fetch_row($result);
+ return $row[0];
+ }
+ }
+ return;
+}
+
+function good_passwd( $passwd )
+{
+ if ( strlen($passwd) >= PASSWD_MIN_LEN ) {
+ return true;
+ }
+ return false;
+}
+
+/* Verifies that the password is correct for the userID specified.
+ * Returns true or false
+ */
+function valid_passwd( $userID, $passwd )
+{
+ if ( strlen($passwd) > 0 ) {
+ $dbh = db_connect();
+
+ # get salt for this user
+ $salt = get_salt($userID);
+ if ($salt) {
+ # use salt
+ $passwd_q = "SELECT ID FROM Users" .
+ " WHERE ID = " . $userID . " AND Passwd = '" .
+ salted_hash($passwd, $salt) . "'";
+ $result = db_query($passwd_q, $dbh);
+ if ($result) {
+ $passwd_result = mysql_fetch_row($result);
+ if ($passwd_result[0]) {
+ return true;
+ }
+ }
+ } else {
+ # check without salt
+ $nosalt_q = "SELECT ID FROM Users".
+ " WHERE ID = " . $userID .
+ " AND Passwd = '" . md5($passwd) . "'";
+ $result = db_query($nosalt_q, $dbh);
+ if ($result) {
+ $nosalt_row = mysql_fetch_row($result);
+ if ($nosalt_row[0]) {
+ # password correct, but salt it first
+ if (!save_salt($userID, $passwd)) {
+ trigger_error("Unable to salt user's password;" .
+ " ID " . $userID, E_USER_WARNING);
+ return false;
+ }
+ return true;
+ }
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * Is the user account suspended?
+ */
+function user_suspended( $id )
+{
+ if (!$id) {
+ return false;
+ }
+ $dbh = db_connect();
+ $q = "SELECT Suspended FROM Users WHERE ID = " . $id;
+ $result = db_query($q, $dbh);
+ if ($result) {
+ $row = mysql_fetch_row($result);
+ if ($result[0] == 1 ) {
+ return true;
+ }
+ }
+ return false;
+}
+
+/*
+ * This should be expanded to return something
+ */
+function user_delete( $id )
+{
+ $dbh = db_connect();
+ $q = "DELETE FROM Users WHERE ID = " . $id;
+ db_query($q, $dbh);
+ return;
+}
+
+/*
+ * A different way of determining a user's privileges
+ * rather than account_from_sid()
+ */
+function user_is_privileged( $id )
+{
+ $dbh = db_connect();
+ $q = "SELECT AccountTypeID FROM Users WHERE ID = " . $id;
+ $result = db_query($q, $dbh);
+ if ($result) {
+ $row = mysql_fetch_row($result);
+ if( $result[0] > 1) {
+ return $result[0];
+ }
+ }
+ return 0;
+
+}
+
+# Clear out old expired sessions.
+function clear_expired_sessions($dbh = null) {
+ global $LOGIN_TIMEOUT;
+
+ if (empty($dbh)) {
+ $dbh = db_connect();
+ }
+
+ $q = "DELETE FROM Sessions WHERE LastUpdateTS < (UNIX_TIMESTAMP() - $LOGIN_TIMEOUT)";
+ db_query($q, $dbh);
+
+ return;
+}
+