Add routing front/back ends

This adds a URL mapping library that can be used to implement virtual
paths. Also, "web/html/index.php" is moved to "web/html/home.php" and
"web/html/index.php" becomes a routing front end that maps virtual paths
to corresponding files.

To enable the virtual path feature, all requests need to be redirected
to the "index.php" routing script. If you use lighttpd, following
rewrite rule can be used:

    url.rewrite = ( "^(.*)$" => "/index.php/$1" )

A similar rule can be used for Apache (using mod_rewrite).

Note that the current routing front end only works if PATH_INFO is
provided.

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

4 files changed, 198 insertions, 120 deletions

diff --git a/web/html/home.php b/web/html/home.php
new file mode 100644
index 0000000..48f5e00
--- /dev/null
+++ b/web/html/home.php
@@ -0,0 +1,123 @@
+<?php
+
+set_include_path(get_include_path() . PATH_SEPARATOR . '../lib');
+
+include_once("aur.inc.php");
+set_lang();
+check_sid();
+
+include_once('stats.inc.php');
+
+html_header( __("Home") );
+
+$dbh = db_connect();
+
+?>
+
+<div id="content-left-wrapper">
+	<div id="content-left">
+		<div id="intro" class="box">
+			<h2>AUR <?php print __("Home"); ?></h2>
+			<p>
+			<?php
+			echo __(
+				'Welcome to the AUR! Please read the %sAUR User Guidelines%s and %sAUR TU Guidelines%s for more information.',
+				'<a href="http://wiki.archlinux.org/index.php/AUR_User_Guidelines">',
+				'</a>',
+				'<a href="http://wiki.archlinux.org/index.php/AUR_Trusted_User_Guidelines">',
+				'</a>'
+				);
+			?>
+			</p>
+			<p>
+			<?php
+			echo __(
+				'Contributed PKGBUILDs %smust%s conform to the %sArch Packaging Standards%s otherwise they will be deleted!',
+				'<b>', '</b>',
+				'<a href="http://wiki.archlinux.org/index.php/Arch_Packaging_Standards">',
+				'</a>'
+				);
+			?>
+			</p>
+			<p>
+			<?php echo __('Remember to vote for your favourite packages!'); ?>
+			<?php echo __('Some packages may be provided as binaries in [community].'); ?>
+			</p>
+			<p>
+			<h4><?php echo __('Discussion') ?></h4>
+			<?php
+			echo __(
+				'General discussion regarding the Arch User Repository (AUR) and Trusted User structure takes place on %saur-general%s. This list can be used for package orphan requests, merge requests, and deletion requests. For discussion relating to the development of the AUR, use the %saur-dev%s mailing list.',
+				'<a href="http://mailman.archlinux.org/mailman/listinfo/aur-general">',
+				'</a>',
+				'<a href="http://mailman.archlinux.org/mailman/listinfo/aur-dev">',
+				'</a>'
+				);
+			?>
+			</p>
+			<h4><?php echo __('Bug Reporting') ?></h4>
+			<?php
+			echo __(
+				'If you find a bug in the AUR, please fill out a bug report on our %sbug tracker%s. Use the tracker to report bugs in the AUR %sonly%s. To report packaging bugs contact the package maintainer or leave a comment on the appropriate package page.',
+				'<a href="https://bugs.archlinux.org/index.php?project=2">',
+				'</a>',
+				'<strong>',
+				'</strong>'
+				);
+			?>
+			</p>
+
+			<div class="important">
+				<b><?php echo __('DISCLAIMER') ?> :</b>
+				<br />
+				<?php echo __('Unsupported packages are user produced content. Any use of the provided files is at your own risk.'); ?>
+			</div>
+		</div>
+		<?php if (!empty($_COOKIE["AURSID"])): ?>
+			<div id="pkg-updates" class="widget box">
+				<table>
+					<tr>
+						<td class="pkg-name">
+							<?php
+							$userid = uid_from_sid($_COOKIE["AURSID"]);
+							user_table($userid, $dbh);
+							?>
+						</td>
+					</tr>
+				</table>
+			</div>
+		<?php endif; ?>
+	</div>
+</div>
+<div id="content-right">
+	<div id="pkgsearch" class="widget">
+		<form id="pkgsearch-form" method="get" action="packages.php">
+			<fieldset>
+				<label for="pkgsearch-field">Package Search:</label>
+				<input type="hidden" name="O" value="0" />
+				<input type="text" name="K" size="30" value="<?php if (isset($_REQUEST["K"])) { print stripslashes(trim(htmlspecialchars($_REQUEST["K"], ENT_QUOTES))); } ?>" maxlength="35" />
+			</fieldset>
+		</form>
+	</div>
+	<div id="pkg-updates" class="widget box">
+		<table>
+			<tr>
+				<td class="pkg-name">
+					<?php updates_table($dbh); ?>
+				</td>
+			</tr>
+		</table>
+	</div>
+	<div id="pkg-updates" class="widget box">
+		<table>
+			<tr>
+				<td class="pkg-name">
+					<?php general_stats_table($dbh); ?>
+				</td>
+			</tr>
+		</table>
+	</div>
+
+</div>
+<?php
+html_footer(AUR_VERSION);
diff --git a/web/html/index.php b/web/html/index.php
index 48f5e00..b0f346d 100644
--- a/web/html/index.php
+++ b/web/html/index.php
@@ -1,123 +1,35 @@
 <?php
-
 set_include_path(get_include_path() . PATH_SEPARATOR . '../lib');
 
-include_once("aur.inc.php");
-set_lang();
-check_sid();
-
-include_once('stats.inc.php');
-
-html_header( __("Home") );
-
-$dbh = db_connect();
-
-?>
-
-<div id="content-left-wrapper">
-	<div id="content-left">
-		<div id="intro" class="box">
-			<h2>AUR <?php print __("Home"); ?></h2>
-			<p>
-			<?php
-			echo __(
-				'Welcome to the AUR! Please read the %sAUR User Guidelines%s and %sAUR TU Guidelines%s for more information.',
-				'<a href="http://wiki.archlinux.org/index.php/AUR_User_Guidelines">',
-				'</a>',
-				'<a href="http://wiki.archlinux.org/index.php/AUR_Trusted_User_Guidelines">',
-				'</a>'
-				);
-			?>
-			</p>
-			<p>
-			<?php
-			echo __(
-				'Contributed PKGBUILDs %smust%s conform to the %sArch Packaging Standards%s otherwise they will be deleted!',
-				'<b>', '</b>',
-				'<a href="http://wiki.archlinux.org/index.php/Arch_Packaging_Standards">',
-				'</a>'
-				);
-			?>
-			</p>
-			<p>
-			<?php echo __('Remember to vote for your favourite packages!'); ?>
-			<?php echo __('Some packages may be provided as binaries in [community].'); ?>
-			</p>
-			<p>
-			<h4><?php echo __('Discussion') ?></h4>
-			<?php
-			echo __(
-				'General discussion regarding the Arch User Repository (AUR) and Trusted User structure takes place on %saur-general%s. This list can be used for package orphan requests, merge requests, and deletion requests. For discussion relating to the development of the AUR, use the %saur-dev%s mailing list.',
-				'<a href="http://mailman.archlinux.org/mailman/listinfo/aur-general">',
-				'</a>',
-				'<a href="http://mailman.archlinux.org/mailman/listinfo/aur-dev">',
-				'</a>'
-				);
-			?>
-			</p>
-			<h4><?php echo __('Bug Reporting') ?></h4>
-			<?php
-			echo __(
-				'If you find a bug in the AUR, please fill out a bug report on our %sbug tracker%s. Use the tracker to report bugs in the AUR %sonly%s. To report packaging bugs contact the package maintainer or leave a comment on the appropriate package page.',
-				'<a href="https://bugs.archlinux.org/index.php?project=2">',
-				'</a>',
-				'<strong>',
-				'</strong>'
-				);
-			?>
-			</p>
-
-			<div class="important">
-				<b><?php echo __('DISCLAIMER') ?> :</b>
-				<br />
-				<?php echo __('Unsupported packages are user produced content. Any use of the provided files is at your own risk.'); ?>
-			</div>
-		</div>
-		<?php if (!empty($_COOKIE["AURSID"])): ?>
-			<div id="pkg-updates" class="widget box">
-				<table>
-					<tr>
-						<td class="pkg-name">
-							<?php
-							$userid = uid_from_sid($_COOKIE["AURSID"]);
-							user_table($userid, $dbh);
-							?>
-						</td>
-					</tr>
-				</table>
-			</div>
-		<?php endif; ?>
-	</div>
-</div>
-<div id="content-right">
-	<div id="pkgsearch" class="widget">
-		<form id="pkgsearch-form" method="get" action="packages.php">
-			<fieldset>
-				<label for="pkgsearch-field">Package Search:</label>
-				<input type="hidden" name="O" value="0" />
-				<input type="text" name="K" size="30" value="<?php if (isset($_REQUEST["K"])) { print stripslashes(trim(htmlspecialchars($_REQUEST["K"], ENT_QUOTES))); } ?>" maxlength="35" />
-			</fieldset>
-		</form>
-	</div>
-	<div id="pkg-updates" class="widget box">
-		<table>
-			<tr>
-				<td class="pkg-name">
-					<?php updates_table($dbh); ?>
-				</td>
-			</tr>
-		</table>
-	</div>
-	<div id="pkg-updates" class="widget box">
-		<table>
-			<tr>
-				<td class="pkg-name">
-					<?php general_stats_table($dbh); ?>
-				</td>
-			</tr>
-		</table>
-	</div>
-
-</div>
-<?php
-html_footer(AUR_VERSION);
+include_once("config.inc.php");
+include_once("routing.inc.php");
+
+$path = rtrim($_SERVER['PATH_INFO'], '/');
+
+if (get_route($path) !== NULL) {
+	include get_route($path);
+} else {
+	switch ($path) {
+	case "/css/archweb.css":
+	case "/css/aur.css":
+	case "/css/archnavbar/archnavbar.css":
+		header("Content-Type: text/css");
+		include "./$path";
+		break;
+	case "/css/archnavbar/archlogo.gif":
+	case "/images/new.gif":
+		header("Content-Type: image/gif");
+		include "./$path";
+		break;
+	case "/css/archnavbar/archlogo.png":
+	case "/images/AUR-logo-80.png":
+	case "/images/AUR-logo.png":
+	case "/images/favicon.ico":
+	case "/images/feed-icon-14x14.png":
+	case "/images/titlelogo.png":
+	case "/images/x.png":
+		header("Content-Type: image/png");
+		include "./$path";
+		break;
+	}
+}
diff --git a/web/lib/config.inc.php.proto b/web/lib/config.inc.php.proto
index 1e2699e..fee1022 100644
--- a/web/lib/config.inc.php.proto
+++ b/web/lib/config.inc.php.proto
@@ -51,3 +51,7 @@ $DISABLE_HTTP_LOGIN = true;
 
 # Web URL used in email links and absolute redirects, no trailing slash
 $AUR_LOCATION = "http://localhost";
+
+# Use virtual URLs -- to enable this feature, you also need to tell your web
+# server to redirect all requests to "/index.php/$uri".
+$USE_VIRTUAL_URLS = true;
diff --git a/web/lib/routing.inc.php b/web/lib/routing.inc.php
new file mode 100644
index 0000000..0d940a2
--- /dev/null
+++ b/web/lib/routing.inc.php
@@ -0,0 +1,39 @@
+<?php
+
+$ROUTES = array(
+	'' => 'home.php',
+	'/index.php' => 'home.php',
+	'/packages' => 'packages.php',
+	'/register' => 'account.php',
+	'/accounts' => 'account.php',
+	'/login' => 'login.php',
+	'/logout' => 'logout.php',
+	'/passreset' => 'passreset.php',
+	'/rpc' => 'rpc.php',
+	'/rss' => 'rss.php',
+	'/submit' => 'pkgsubmit.php',
+	'/tu' => 'tu.php',
+	'/voters' => 'voters.php',
+	'/addvote' => 'addvote.php',
+);
+
+function get_route($path) {
+	global $ROUTES;
+
+	if (isset($ROUTES[$path])) {
+		return $ROUTES[$path];
+	} else {
+		return NULL;
+	}
+}
+
+function get_uri($path) {
+	global $USE_VIRTUAL_URLS;
+	global $ROUTES;
+
+	if ($USE_VIRTUAL_URLS) {
+		return $path;
+	} else {
+		return get_route($path);
+	}
+}