Tweaks to svn access rights importer

- Make it work with repositories outside of svn.b.o.
  Useful for local debugging.

- Make it aware of svn subpath repository setting.
  So now it's possible to restrict commit rights
  to a subpath in svn repository.

- Make SVN repositories always available for
  read-only access;

scripts/svnauth/rebuild_svnauth.php

@@ -4,6 +4,12 @@
 $root = dirname(dirname(dirname(__FILE__)));
 require_once $root.'/scripts/__init_script__.php';
 
+function getSVNRepositoryName($repository) {
+  $uri = $repository->getRemoteURI();
+  return preg_replace(
+    '/https?\:\/\/.*?\/svnroot\/([^\/]+)\/?.*/', '$1', $uri);
+}
+
 // Get user's heys and put them to the configuration
 function handleSingleUserPHID(
   $viewer, $userPHID, $repository, &$authfile, &$access) {
@@ -28,13 +34,15 @@ function handleSingleUserPHID(
     }
   }
 
-  $uri = $repository->getRemoteURI();
-  $repository_name = preg_replace(
-    '/https?\:\/\/svn.blender.org\/svnroot\/([^\/]+)\/?.*/', '$1', $uri);
-  if (!array_key_exists($repository_name, $access)) {
-    $access[$repository_name] = array();
+  $repository_name = getSVNRepositoryName($repository);
+
+  // Store write access settings to current subath
+  $subpath = $repository->getDetail('svn-subpath');
+  $repository_pathname = "$repository_name:/$subpath";
+  if (!array_key_exists($repository_pathname, $access)) {
+    $access[$repository_pathname] = array();
   }
-  $access[$repository_name][] = $user_name;
+  $access[$repository_pathname][] = $user_name;
 }
 
 // Parse repository and put it's members to the config file
@@ -47,6 +55,12 @@ function handleSingleRepository(
   $pushable = $policies[DiffusionCapabilityPush::CAPABILITY];
   $type = phid_get_type($pushable->getPHID());
 
+  // Make sure repository is always available for read-only access
+  $repository_rootpath = getSVNRepositoryName($repository) . ':/';
+  if (!array_key_exists($repository_rootpath, $access)) {
+    $access[$repository_rootpath] = array();
+  }
+
   if ($type == PhabricatorProjectPHIDTypeProject::TYPECONST) {
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
@@ -93,12 +107,12 @@ function rebuildConfiguration($what) {
   }
   else if ($what == 'ACCESS') {
     foreach ($access as $repository => $users) {
-      print("[$repository:/]\n");
+      print("[$repository]\n");
       foreach ($users as $user) {
         print("$user = rw\n");
       }
       print("anonsvn = r\n");
-      print("* = r\n");
+      print("* = r\n\n");
     }
   }
   return true;