rename *.inc files to *.inc.php and adjust imports and references

Lukas: Add note to "UPGRADING".

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

1 files changed, 847 insertions, 0 deletions

diff --git a/web/lib/acctfuncs.inc.php b/web/lib/acctfuncs.inc.php
new file mode 100644
index 0000000..b2f0548
--- /dev/null
+++ b/web/lib/acctfuncs.inc.php
@@ -0,0 +1,847 @@
+<?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;
+}
+