Add the possibility to save mtn public keys per user

* src/IDF/Key.php: new column "type" which is either "ssh" or "mtn";
  utility functions to query the mtn key name and id as well as
  all available key types for the current IDF installation
* src/IDF/Migrations/16KeyType.php: needed migration script
* src/IDF/Plugin/SyncGit/Cron.php: ensure only SSH keys are handled
* adapt forms and templates accordingly

src/IDF/Form/Admin/UserCreate.php

@@ -82,16 +82,22 @@ class IDF_Form_Admin_UserCreate extends Pluf_Form
                                                                     ),
                                             ));
 
-        $this->fields['ssh_key'] = new Pluf_Form_Field_Varchar(
+        $this->fields['public_key'] = new Pluf_Form_Field_Varchar(
                                       array('required' => false,
-                                            'label' => __('Add a public SSH key'),
+                                            'label' => __('Add a public key'),
                                             'initial' => '',
                                             'widget_attrs' => array('rows' => 3,
                                                                     'cols' => 40),
                                             'widget' => 'Pluf_Form_Widget_TextareaInput',
                                             'help_text' => __('Be careful to provide the public key and not the private key!')
                                             ));
-        
+        $this->fields['public_key_type'] = new Pluf_Form_Field_Varchar(
+                                   array('required' => true,
+                                         'label' => __('Key type'),
+                                         'initial' => 'ssh',
+                                         'widget_attrs' => array('choices' => IDF_Key::getAvailableKeyTypes()),
+                                         'widget' => 'Pluf_Form_Widget_SelectInput',
+                                         ));
 
     }
 
@@ -138,10 +144,11 @@ class IDF_Form_Admin_UserCreate extends Pluf_Form
         Pluf_Signal::send('Pluf_User::passwordUpdated',
                           'IDF_Form_Admin_UserCreate', $params);
         // Create the ssh key as needed
-        if ('' !== $this->cleaned_data['ssh_key']) {
+        if ('' !== $this->cleaned_data['public_key']) {
             $key = new IDF_Key();
             $key->user = $user;
-            $key->content = $this->cleaned_data['ssh_key'];
+            $key->content = $this->cleaned_data['public_key'];
+            $key->type = $this->cleaned_data['public_key_type'];
             $key->create();
         }
         // Send an email to the user with the password
@@ -162,11 +169,6 @@ class IDF_Form_Admin_UserCreate extends Pluf_Form
         return $user;
     }
 
-    function clean_ssh_key()
-    {
-        return IDF_Form_UserAccount::checkSshKey($this->cleaned_data['ssh_key']);
-    }
-
     function clean_last_name()
     {
         $last_name = trim($this->cleaned_data['last_name']);
@@ -211,4 +213,16 @@ class IDF_Form_Admin_UserCreate extends Pluf_Form
         }
         return $this->cleaned_data['login'];
     }
+
+    /**
+     * Checks whether any given public key is valid
+     */
+    public function clean()
+    {
+        $this->cleaned_data['public_key'] =
+            IDF_Form_UserAccount::checkPublicKey($this->cleaned_data['public_key'],
+                                                 $this->cleaned_data['public_key_type']);
+
+        return $this->cleaned_data;
+    }
 }

src/IDF/Form/UserAccount.php

@@ -92,16 +92,22 @@ class IDF_Form_UserAccount  extends Pluf_Form
                                                                     ),
                                             ));
 
-        $this->fields['ssh_key'] = new Pluf_Form_Field_Varchar(
+        $this->fields['public_key'] = new Pluf_Form_Field_Varchar(
                                       array('required' => false,
-                                            'label' => __('Add a public SSH key'),
+                                            'label' => __('Add a public key'),
                                             'initial' => '',
                                             'widget_attrs' => array('rows' => 3,
                                                                     'cols' => 40),
                                             'widget' => 'Pluf_Form_Widget_TextareaInput',
                                             'help_text' => __('Be careful to provide your public key and not your private key!')
                                             ));
-        
+        $this->fields['public_key_type'] = new Pluf_Form_Field_Varchar(
+                                           array('required' => true,
+                                                 'label' => __('Key type'),
+                                                 'initial' => 'ssh',
+                                                 'widget_attrs' => array('choices' => IDF_Key::getAvailableKeyTypes()),
+                                                 'widget' => 'Pluf_Form_Widget_SelectInput',
+                                                 ));
 
     }
 
@@ -151,10 +157,11 @@ class IDF_Form_UserAccount  extends Pluf_Form
         }
         $this->user->setFromFormData($this->cleaned_data);
         // Add key as needed.
-        if ('' !== $this->cleaned_data['ssh_key']) {
+        if ('' !== $this->cleaned_data['public_key']) {
             $key = new IDF_Key();
             $key->user = $this->user;
-            $key->content = $this->cleaned_data['ssh_key'];
+            $key->content = $this->cleaned_data['public_key'];
+            $key->type = $this->cleaned_data['public_key_type'];
             if ($commit) {
                 $key->create();
             }
@@ -190,56 +197,106 @@ class IDF_Form_UserAccount  extends Pluf_Form
     }
 
     /**
-     * Check an ssh key.
+     * Check arbitrary public keys.
      *
      * It will throw a Pluf_Form_Invalid exception if it cannot
      * validate the key.
      *
      * @param $key string The key
+     * @param $key string The type ('ssh' or 'mtn')
      * @param $user int The user id of the user of the key (0)
      * @return string The clean key
      */
-    public static function checkSshKey($key, $user=0)
+    public static function checkPublicKey($key, $type, $user=0)
     {
         $key = trim($key);
-        if (strlen($key) == 0) {
+        if (strlen($key) == 0)
+        {
             return '';
         }
-        $key = str_replace(array("\n", "\r"), '', $key);
+
-        if (!preg_match('#^ssh\-[a-z]{3}\s(\S+)\s\S+$#', $key, $matches)) {
+        if ($type == 'ssh')
-            throw new Pluf_Form_Invalid(__('The format of the key is not valid. It must start with ssh-dss or ssh-rsa, a long string on a single line and at the end a comment.'));
+        {
-        }
+            $key = str_replace(array("\n", "\r"), '', $key);
-        if (Pluf::f('idf_strong_key_check', false)) {
+            if (!preg_match('#^ssh\-[a-z]{3}\s\S+\s\S+$#', $key))
-            $tmpfile = Pluf::f('tmp_folder', '/tmp').'/'.$user.'-key';
+            {
-            file_put_contents($tmpfile, $key, LOCK_EX);
+                throw new Pluf_Form_Invalid(
-            $cmd = Pluf::f('idf_exec_cmd_prefix', '').
+                    __('The format of the key is not valid. It must start '.
-                'ssh-keygen -l -f '.escapeshellarg($tmpfile).' > /dev/null 2>&1';
+                       'with ssh-dss or ssh-rsa, a long string on a single '.
-            exec($cmd, $out, $return);
+                       'line and at the end a comment.')
-            unlink($tmpfile);
+                );
-            if ($return != 0) {
+            }
-                throw new Pluf_Form_Invalid(__('Please check the key as it does not appears to be a valid key.'));
+            if (Pluf::f('idf_strong_key_check', false))
+            {
+                $tmpfile = Pluf::f('tmp_folder', '/tmp').'/'.$user.'-key';
+                file_put_contents($tmpfile, $key, LOCK_EX);
+                $cmd = Pluf::f('idf_exec_cmd_prefix', '').
+                    'ssh-keygen -l -f '.escapeshellarg($tmpfile).' > /dev/null 2>&1';
+                exec($cmd, $out, $return);
+                unlink($tmpfile);
+                if ($return != 0)
+                {
+                    throw new Pluf_Form_Invalid(
+                        __('Please check the key as it does not appears '.
+                           'to be a valid key.')
+                    );
+                }
             }
         }
+        else if ($type == 'mtn')
+        {
+            if (!preg_match('#^\[pubkey [^\]]+\]\s*\S+\s*\[end\]$#', $key))
+            {
+                throw new Pluf_Form_Invalid(
+                    __('The format of the key is not valid. It must start '.
+                       'with [pubkey KEYNAME], contain a long string on a single '.
+                       'line and end with [end] in the final third line.')
+                );
+            }
+            if (Pluf::f('idf_strong_key_check', false))
+            {
+                // if monotone can read it, it should be valid
+                $mtn_opts = implode(' ', Pluf::f('mtn_opts', array()));
+                $cmd = Pluf::f('idf_exec_cmd_prefix', '').
+                    sprintf('%s %s -d :memory: read >/tmp/php-out 2>&1',
+                            Pluf::f('mtn_path', 'mtn'), $mtn_opts);
+                $fp = popen($cmd, 'w');
+                fwrite($fp, $key);
+                $return = pclose($fp);
+
+                if ($return != 0)
+                {
+                       throw new Pluf_Form_Invalid(
+                        __('Please check the key as it does not appears '.
+                           'to be a valid key.')
+                    );
+                }
+            }
+        }
+        else
+        {
+            throw new Pluf_Form_Invalid(__('Unknown key type'));
+        }
+
         // If $user, then check if not the same key stored
-        if ($user) {
+        if ($user)
+        {
             $ruser = Pluf::factory('Pluf_User', $user);
-            if ($ruser->id > 0) {
+            if ($ruser->id > 0)
-                $sql = new Pluf_SQL('content=%s', array($key));
+            {
+                $sql = new Pluf_SQL('content=%s AND type=%s', array($key, $type));
                 $keys = Pluf::factory('IDF_Key')->getList(array('filter' => $sql->gen()));
-                if (count($keys) > 0) {
+                if (count($keys) > 0)
-                    throw new Pluf_Form_Invalid(__('You already have uploaded this SSH key.'));
+                {
+                    throw new Pluf_Form_Invalid(
+                        __('You already have uploaded this key.')
+                    );
                 }
             }
         }
         return $key;
     }
 
-    function clean_ssh_key()
-    {
-        return self::checkSshKey($this->cleaned_data['ssh_key'], 
-                                 $this->user->id);
-    }
-
     function clean_last_name()
     {
         $last_name = trim($this->cleaned_data['last_name']);
@@ -273,7 +330,8 @@ class IDF_Form_UserAccount  extends Pluf_Form
     }
 
     /**
-     * Check to see if the 2 passwords are the same.
+     * Check to see if the 2 passwords are the same and if any
+     * given public key is valid
      */
     public function clean()
     {
@@ -285,6 +343,12 @@ class IDF_Form_UserAccount  extends Pluf_Form
                 throw new Pluf_Form_Invalid(__('The passwords do not match. Please give them again.'));
             }
         }
+
+        $this->cleaned_data['public_key'] =
+            self::checkPublicKey($this->cleaned_data['public_key'],
+                                 $this->cleaned_data['public_key_type'],
+                                 $this->user->id);
+
         return $this->cleaned_data;
     }
 }

src/IDF/Key.php

@@ -22,7 +22,7 @@
 # ***** END LICENSE BLOCK ***** */
 
 /**
- * Storage of the SSH keys.
+ * Storage of the public keys (ssh or monotone).
  *
  */
 class IDF_Key extends Pluf_Model
@@ -52,7 +52,14 @@ class IDF_Key extends Pluf_Model
                             array(
                                   'type' => 'Pluf_DB_Field_Text',
                                   'blank' => false,
-                                  'verbose' => __('ssh key'),
+                                  'verbose' => __('public key'),
+                                  ),
+                            'type' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Varchar',
+                                  'size' => 3,
+                                  'blank' => false,
+                                  'verbose' => __('key type'),
                                   ),
                             );
         // WARNING: Not using getSqlTable on the Pluf_User object to
@@ -75,6 +82,46 @@ class IDF_Key extends Pluf_Model
         return Pluf_Template::markSafe(Pluf_esc(substr($this->content, 0, 25)).' [...] '.Pluf_esc(substr($this->content, -55)));
     }
 
+    private function parseMonotoneKeyData()
+    {
+        if ($this->type != "mtn")
+            throw new IDF_Exception("key is not a monotone key type");
+
+        preg_match("#^\[pubkey ([^\]]+)\]\s*(\S+)\s*\[end\]$#", $this->content, $m);
+        if (count($m) != 3)
+            throw new IDF_Exception("invalid key data detected");
+
+        return array($m[1], $m[2]);
+    }
+
+    /**
+     * Returns the key name of the key, i.e. most of the time the email
+     * address, which not neccessarily has to be unique across a project.
+     *
+     * @return string
+     */
+    function getMonotoneKeyName()
+    {
+        list($keyName, ) = $this->parseMonotoneKeyData();
+        return $keyName;
+    }
+
+    /**
+     * This function should be used to calculate the key id from the
+     * public key hash for authentication purposes. This avoids clashes
+     * in case the key name is not unique across the project
+     *
+     * And yes, this is actually how monotone itself calculates the key
+     * id...
+     *
+     * @return string
+     */
+    function getMonotoneKeyId()
+    {
+        list($keyName, $keyData) = $this->parseMonotoneKeyData();
+        return sha1($keyName.":".$keyData);
+    }
+
     function postSave($create=false)
     {
         /**
@@ -89,7 +136,7 @@ class IDF_Key extends Pluf_Model
          * [description]
          *
          * This signal allows an application to perform special
-         * operations after the saving of a SSH Key.
+         * operations after the saving of a public Key.
          *
          * [parameters]
          *
@@ -128,4 +175,19 @@ class IDF_Key extends Pluf_Model
                           'IDF_Key', $params);
     }
 
+    /**
+     * Returns an associative array with available key types for this
+     * idf installation, ready for consumption for a <select> widget
+     *
+     * @return array
+     */
+    public static function getAvailableKeyTypes()
+    {
+        $key_types = array(__("SSH") => 'ssh');
+        if (array_key_exists('mtn', Pluf::f('allowed_scm', array())))
+        {
+            $key_types[__("monotone")] = 'mtn';
+        }
+        return $key_types;
+    }
 }

src/IDF/Migrations/16KeyType.php

@@ -0,0 +1,55 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Add the type column in the keys table.
+ */
+
+function IDF_Migrations_16KeyType_up($params=null)
+{
+    $table = Pluf::factory('IDF_Keys')->getSqlTable();
+    $sql = array();
+    $sql['PostgreSQL'] = 'ALTER TABLE '.$table.' ADD COLUMN "type" VARCHAR(3) DEFAULT \'ssh\'';
+    $sql['MySQL'] = 'ALTER TABLE '.$table.' ADD COLUMN `type` VARCHAR(3) DEFAULT \'ssh\'';
+    $db = Pluf::db();
+    $engine = Pluf::f('db_engine');
+    if (!isset($sql[$engine])) {
+        throw new Exception('SQLite complex migration not supported.');
+    }
+    $db->execute($sql[$engine]);
+}
+
+function IDF_Migrations_16KeyType_down($params=null)
+{
+    $table = Pluf::factory('IDF_Keys')->getSqlTable();
+    $sql = array();
+    $sql['PostgreSQL'] = 'ALTER TABLE '.$table.' DROP COLUMN "type"';
+    $sql['MySQL'] = 'ALTER TABLE '.$table.' DROP COLUMN `type`';
+    $db = Pluf::db();
+    $engine = Pluf::f('db_engine');
+    if (!isset($sql[$engine])) {
+        throw new Exception('SQLite complex migration not supported.');
+    }
+    $db->execute($sql[$engine]);
+
+}

src/IDF/Plugin/SyncGit/Cron.php

@@ -48,7 +48,7 @@ class IDF_Plugin_SyncGit_Cron
         $out = '';
         $keys = Pluf::factory('IDF_Key')->getList(array('view'=>'join_user'));
         foreach ($keys as $key) {
-            if (strlen($key->content) > 40 // minimal check
+            if ($key->type == 'ssh' && strlen($key->content) > 40 // minimal check
                 and preg_match('/^[a-zA-Z][a-zA-Z0-9_.-]*(@[a-zA-Z][a-zA-Z0-9.-]*)?$/', $key->login)) {
                 $content = trim(str_replace(array("\n", "\r"), '', $key->content));
                 $out .= sprintf($template, $cmd, $key->login, $content)."\n";

src/IDF/Views/User.php

@@ -134,7 +134,7 @@ class IDF_Views_User
     }
 
     /**
-     * Delete a SSH key.
+     * Delete a public key.
      *
      * This is redirecting to the preferences
      */
@@ -148,7 +148,7 @@ class IDF_Views_User
                 return new Pluf_HTTP_Response_Forbidden($request);
             }
             $key->delete();
-            $request->user->setMessage(__('The SSH key has been deleted.'));
+            $request->user->setMessage(__('The public key has been deleted.'));
         }
         return new Pluf_HTTP_Response_Redirect($url);
     }

src/IDF/templates/idf/gadmin/users/create.html

@@ -43,10 +43,14 @@
 </td>
 </tr>
 <tr>
-<th>{$form.f.ssh_key.labelTag}:</th>
+<th>{$form.f.public_key.labelTag}:</th>
-<td>{if $form.f.ssh_key.errors}{$form.f.ssh_key.fieldErrors}{/if}
+<td>{if $form.f.public_key.errors}{$form.f.public_key.fieldErrors}{/if}
-{$form.f.ssh_key|unsafe}<br />
+{$form.f.public_key|unsafe}<br />
-<span class="helptext">{$form.f.ssh_key.help_text}</span>
+{$form.f.public_key_type.labelTag} {$form.f.public_key_type|unsafe}<br />
+<span class="helptext">
+    {$form.f.public_key.help_text}
+    {$form.f.public_key_type.help_text}
+</span>
 </td>
 </tr>
 <tr>

src/IDF/templates/idf/user/myaccount.html

@@ -54,10 +54,14 @@
 </td>
 </tr>
 <tr>
-<th>{$form.f.ssh_key.labelTag}:</th>
+<th>{$form.f.public_key.labelTag}:</th>
-<td>{if $form.f.ssh_key.errors}{$form.f.ssh_key.fieldErrors}{/if}
+<td>{if $form.f.public_key.errors}{$form.f.public_key.fieldErrors}{/if}
-{$form.f.ssh_key|unsafe}<br />
+{$form.f.public_key|unsafe}<br />
-<span class="helptext">{$form.f.ssh_key.help_text}</span>
+{$form.f.public_key_type.labelTag} {$form.f.public_key_type|unsafe}<br />
+<span class="helptext">
+    {$form.f.public_key.help_text}
+    {$form.f.public_key_type.help_text}
+</span>
 </td>
 </tr>
 <tr class="pass-info" id="extra-password">
@@ -82,7 +86,7 @@
 
 {if count($keys)}
 <table summary=" " class="recent-issues">
-<tr><th colspan="2">{trans 'Your Current SSH Keys'}</th></tr>
+<tr><th colspan="2">{trans 'Your Current Public Keys'}</th></tr>
 {foreach $keys as $key}<tr><td>
 <span class="mono">{$key.showCompact()}</span></td><td> <form class="star" method="post" action="{url 'IDF_Views_User::deleteKey', array($key.id)}"><input type="image" src="{media '/idf/img/trash.png'}" name="submit" value="{trans 'Delete this key'}" /></form>
 </td>