Fix repository interactions for SVN repositories using the SVN protocol with SASL

Summary: also makes the UI more general for this username + password business.

Test Plan:
- configure a phabricator repository from the svn server @asherwin provided which is configured for svn protocol with SASL
- observed phabricator failing without my patch
- upgraded my SVN client to support SASL (protip for mac users - http://www.wandisco.com/subversion/download#osx)
- applied patch to phabricator
- restarted daemons
- noted daemon success - diffusion populating nicely

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Maniphest Tasks: T1260

Differential Revision: https://secure.phabricator.com/D2549

src/applications/repository/controller/edit/PhabricatorRepositoryEditController.php

@@ -231,7 +231,7 @@ final class PhabricatorRepositoryEditController
     $has_branches       = ($is_git || $is_mercurial);
     $has_local          = ($is_git || $is_mercurial);
     $has_branch_filter  = ($is_git);
-    $has_http_support   = $is_svn;
+    $has_auth_support   = $is_svn;
 
     if ($request->isFormPost()) {
       $tracking = ($request->getStr('tracking') == 'enabled' ? true : false);
@@ -442,8 +442,9 @@ final class PhabricatorRepositoryEditController
         'Enter the <strong>Repository Root</strong> for this SVN repository. '.
         'You can figure this out by running <tt>svn info</tt> and looking at '.
         'the value in the <tt>Repository Root</tt> field. It should be a URI '.
-        'and look like <tt>http://svn.example.org/svn/</tt> or '.
+        'and look like <tt>http://svn.example.org/svn/</tt>, '.
-        '<tt>svn+ssh://svn.example.com/svnroot/</tt>';
+        '<tt>svn+ssh://svn.example.com/svnroot/</tt>, or '.
+        '<tt>svn://svn.example.net/svn/</tt>';
       $inset->appendChild(
         '<p class="aphront-form-instructions">'.$instructions.'</p>');
       $uri_label = 'Repository Root';
@@ -489,23 +490,25 @@ final class PhabricatorRepositoryEditController
             '...specify a path on disk where the daemon should '.
             'look for a private key.'));
 
-    if ($has_http_support) {
+    if ($has_auth_support) {
       $inset
         ->appendChild(
           '<div class="aphront-form-instructions">'.
-            'If you want to connect to this repository over HTTP Basic Auth, '.
+            'If you want to connect to this repository with a username and '.
+            'password, such as over HTTP Basic Auth or SVN with SASL, '.
             'enter the username and password to use. You can leave these '.
-            'fields blank if the repository does not use HTTP Basic Auth.'.
+            'fields blank if the repository does not use a username and '.
+            'password for authentication.'.
           '</div>')
         ->appendChild(
           id(new AphrontFormTextControl())
             ->setName('http-login')
-            ->setLabel('HTTP Basic Login')
+            ->setLabel('Username')
             ->setValue($repository->getDetail('http-login')))
         ->appendChild(
           id(new AphrontFormPasswordControl())
             ->setName('http-pass')
-            ->setLabel('HTTP Basic Password')
+            ->setLabel('Password')
             ->setValue($repository->getDetail('http-pass')));
     }
 

src/applications/repository/storage/repository/PhabricatorRepository.php

@@ -228,6 +228,25 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO {
           throw new Exception(
             "No support for HTTP Basic Auth in this version control system.");
       }
+    } else if ($this->shouldUseSVNProtocol()) {
+      switch ($this->getVersionControlSystem()) {
+        case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
+            $pattern =
+              "svn ".
+              "--non-interactive ".
+              "--no-auth-cache ".
+              "--username %s ".
+              "--password %s ".
+              $pattern;
+            array_unshift(
+              $args,
+              $this->getDetail('http-login'),
+              $this->getDetail('http-pass'));
+            break;
+        default:
+          throw new Exception(
+            "SVN protocol is SVN only.");
+      }
     } else {
       switch ($this->getVersionControlSystem()) {
         case PhabricatorRepositoryType::REPOSITORY_TYPE_SVN:
@@ -320,6 +339,17 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO {
     }
   }
 
+  public function shouldUseSVNProtocol() {
+    $uri = new PhutilURI($this->getRemoteURI());
+    $protocol = $uri->getProtocol();
+    if ($this->isSVNProtocol($protocol)) {
+      return (bool)$this->getDetail('http-login');
+    } else {
+      return false;
+    }
+  }
+
+
   public function getPublicRemoteURI() {
     $uri = new PhutilURI($this->getRemoteURI());
 
@@ -343,6 +373,10 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO {
     return ($protocol == 'http' || $protocol == 'https');
   }
 
+  private function isSVNProtocol($protocol) {
+    return ($protocol == 'svn');
+  }
+
   public function isTracked() {
     return $this->getDetail('tracking-enabled', false);
   }