Project

General

Profile

Paste
Download (13.3 KB) Statistics
| Branch: | Revision:

root / drupal7 / includes / authorize.inc @ 96ad5adc

1
<?php
2

    
3
/**
4
 * @file
5
 * Helper functions and form handlers used for the authorize.php script.
6
 */
7

    
8
/**
9
 * Form constructor for the file transfer authorization form.
10
 *
11
 * Allows the user to choose a FileTransfer type and supply credentials.
12
 *
13
 * @see authorize_filetransfer_form_validate()
14
 * @see authorize_filetransfer_form_submit()
15
 * @ingroup forms
16
 */
17
function authorize_filetransfer_form($form, &$form_state) {
18
  global $base_url, $is_https;
19
  $form = array();
20

    
21
  // If possible, we want to post this form securely via HTTPS.
22
  $form['#https'] = TRUE;
23

    
24
  // CSS we depend on lives in modules/system/maintenance.css, which is loaded
25
  // via the default maintenance theme.
26
  $form['#attached']['js'][] = $base_url . '/misc/authorize.js';
27

    
28
  // Get all the available ways to transfer files.
29
  if (empty($_SESSION['authorize_filetransfer_info'])) {
30
    drupal_set_message(t('Unable to continue, no available methods of file transfer'), 'error');
31
    return array();
32
  }
33
  $available_backends = $_SESSION['authorize_filetransfer_info'];
34

    
35
  if (!$is_https) {
36
    $form['information']['https_warning'] = array(
37
      '#prefix' => '<div class="messages error">',
38
      '#markup' => t('WARNING: You are not using an encrypted connection, so your password will be sent in plain text. <a href="@https-link">Learn more</a>.', array('@https-link' => 'http://drupal.org/https-information')),
39
      '#suffix' => '</div>',
40
    );
41
  }
42

    
43
  // Decide on a default backend.
44
  if (isset($form_state['values']['connection_settings']['authorize_filetransfer_default'])) {
45
    $authorize_filetransfer_default = $form_state['values']['connection_settings']['authorize_filetransfer_default'];
46
  }
47
  elseif ($authorize_filetransfer_default = variable_get('authorize_filetransfer_default', NULL));
48
  else {
49
    $authorize_filetransfer_default = key($available_backends);
50
  }
51

    
52
  $form['information']['main_header'] = array(
53
    '#prefix' => '<h3>',
54
    '#markup' => t('To continue, provide your server connection details'),
55
    '#suffix' => '</h3>',
56
  );
57

    
58
  $form['connection_settings']['#tree'] = TRUE;
59
  $form['connection_settings']['authorize_filetransfer_default'] = array(
60
    '#type' => 'select',
61
    '#title' => t('Connection method'),
62
    '#default_value' => $authorize_filetransfer_default,
63
    '#weight' => -10,
64
  );
65

    
66
  /*
67
   * Here we create two submit buttons. For a JS enabled client, they will
68
   * only ever see submit_process. However, if a client doesn't have JS
69
   * enabled, they will see submit_connection on the first form (when picking
70
   * what filetransfer type to use, and submit_process on the second one (which
71
   * leads to the actual operation).
72
   */
73
  $form['submit_connection'] = array(
74
    '#prefix' => "<br style='clear:both'/>",
75
    '#name' => 'enter_connection_settings',
76
    '#type' => 'submit',
77
    '#value' => t('Enter connection settings'),
78
    '#weight' => 100,
79
  );
80

    
81
  $form['submit_process'] = array(
82
    '#name' => 'process_updates',
83
    '#type' => 'submit',
84
    '#value' => t('Continue'),
85
    '#weight' => 100,
86
    '#attributes' => array('style' => 'display:none'),
87
  );
88

    
89
  // Build a container for each connection type.
90
  foreach ($available_backends as $name => $backend) {
91
    $form['connection_settings']['authorize_filetransfer_default']['#options'][$name] = $backend['title'];
92
    $form['connection_settings'][$name] = array(
93
      '#type' => 'container',
94
      '#attributes' => array('class' => array("filetransfer-$name", 'filetransfer')),
95
    );
96
    // We can't use #prefix on the container itself since then the header won't
97
    // be hidden and shown when the containers are being manipulated via JS.
98
    $form['connection_settings'][$name]['header'] = array(
99
      '#markup' => '<h4>' . t('@backend connection settings', array('@backend' => $backend['title'])) . '</h4>',
100
    );
101

    
102
    $form['connection_settings'][$name] += _authorize_filetransfer_connection_settings($name);
103

    
104
    // Start non-JS code.
105
    if (isset($form_state['values']['connection_settings']['authorize_filetransfer_default']) && $form_state['values']['connection_settings']['authorize_filetransfer_default'] == $name) {
106

    
107
      // If the user switches from JS to non-JS, Drupal (and Batch API) will
108
      // barf. This is a known bug: http://drupal.org/node/229825.
109
      setcookie('has_js', '', time() - 3600, '/');
110
      unset($_COOKIE['has_js']);
111

    
112
      // Change the submit button to the submit_process one.
113
      $form['submit_process']['#attributes'] = array();
114
      unset($form['submit_connection']);
115

    
116
      // Activate the proper filetransfer settings form.
117
      $form['connection_settings'][$name]['#attributes']['style'] = 'display:block';
118
      // Disable the select box.
119
      $form['connection_settings']['authorize_filetransfer_default']['#disabled'] = TRUE;
120

    
121
      // Create a button for changing the type of connection.
122
      $form['connection_settings']['change_connection_type'] = array(
123
        '#name' => 'change_connection_type',
124
        '#type' => 'submit',
125
        '#value' => t('Change connection type'),
126
        '#weight' => -5,
127
        '#attributes' => array('class' => array('filetransfer-change-connection-type')),
128
      );
129
    }
130
    // End non-JS code.
131
  }
132
  return $form;
133
}
134

    
135
/**
136
 * Generates the Form API array for a given connection backend's settings.
137
 *
138
 * @param $backend
139
 *   The name of the backend (e.g. 'ftp', 'ssh', etc).
140
 *
141
 * @return
142
 *   Form API array of connection settings for the given backend.
143
 *
144
 * @see hook_filetransfer_backends()
145
 */
146
function _authorize_filetransfer_connection_settings($backend) {
147
  $defaults = variable_get('authorize_filetransfer_connection_settings_' . $backend, array());
148
  $form = array();
149

    
150
  // Create an instance of the file transfer class to get its settings form.
151
  $filetransfer = authorize_get_filetransfer($backend);
152
  if ($filetransfer) {
153
    $form = $filetransfer->getSettingsForm();
154
  }
155
  // Fill in the defaults based on the saved settings, if any.
156
  _authorize_filetransfer_connection_settings_set_defaults($form, NULL, $defaults);
157
  return $form;
158
}
159

    
160
/**
161
 * Sets the default settings on a file transfer connection form recursively.
162
 *
163
 * The default settings for the file transfer connection forms are saved in
164
 * the database. The settings are stored as a nested array in the case of a
165
 * settings form that has fieldsets or otherwise uses a nested structure.
166
 * Therefore, to properly add defaults, we need to walk through all the
167
 * children form elements and process those defaults recursively.
168
 *
169
 * @param $element
170
 *   Reference to the Form API form element we're operating on.
171
 * @param $key
172
 *   The key for our current form element, if any.
173
 * @param array $defaults
174
 *   The default settings for the file transfer backend we're operating on.
175
 */
176
function _authorize_filetransfer_connection_settings_set_defaults(&$element, $key, array $defaults) {
177
  // If we're operating on a form element which isn't a fieldset, and we have
178
  // a default setting saved, stash it in #default_value.
179
  if (!empty($key) && isset($defaults[$key]) && isset($element['#type']) && $element['#type'] != 'fieldset') {
180
    $element['#default_value'] = $defaults[$key];
181
  }
182
  // Now, we walk through all the child elements, and recursively invoke
183
  // ourself on each one. Since the $defaults settings array can be nested
184
  // (because of #tree, any values inside fieldsets will be nested), if
185
  // there's a subarray of settings for the form key we're currently
186
  // processing, pass in that subarray to the recursive call. Otherwise, just
187
  // pass on the whole $defaults array.
188
  foreach (element_children($element) as $child_key) {
189
    _authorize_filetransfer_connection_settings_set_defaults($element[$child_key], $child_key, ((isset($defaults[$key]) && is_array($defaults[$key])) ? $defaults[$key] : $defaults));
190
  }
191
}
192

    
193
/**
194
 * Form validation handler for authorize_filetransfer_form().
195
 *
196
 * @see authorize_filetransfer_form()
197
 * @see authorize_filetransfer_submit()
198
 */
199
function authorize_filetransfer_form_validate($form, &$form_state) {
200
  // Only validate the form if we have collected all of the user input and are
201
  // ready to proceed with updating or installing.
202
  if ($form_state['triggering_element']['#name'] != 'process_updates') {
203
    return;
204
  }
205

    
206
  if (isset($form_state['values']['connection_settings'])) {
207
    $backend = $form_state['values']['connection_settings']['authorize_filetransfer_default'];
208
    $filetransfer = authorize_get_filetransfer($backend, $form_state['values']['connection_settings'][$backend]);
209
    try {
210
      if (!$filetransfer) {
211
        throw new Exception(t('Error, this type of connection protocol (%backend) does not exist.', array('%backend' => $backend)));
212
      }
213
      $filetransfer->connect();
214
    }
215
    catch (Exception $e) {
216
      // The format of this error message is similar to that used on the
217
      // database connection form in the installer.
218
      form_set_error('connection_settings', t('Failed to connect to the server. The server reports the following message: !message For more help installing or updating code on your server, see the <a href="@handbook_url">handbook</a>.', array(
219
        '!message' => '<p class="error">' . $e->getMessage()  . '</p>',
220
        '@handbook_url' => 'http://drupal.org/documentation/install/modules-themes',
221
      )));
222
    }
223
  }
224
}
225

    
226
/**
227
 * Form submission handler for authorize_filetransfer_form().
228
 *
229
 * @see authorize_filetransfer_form()
230
 * @see authorize_filetransfer_validate()
231
 */
232
function authorize_filetransfer_form_submit($form, &$form_state) {
233
  global $base_url;
234
  switch ($form_state['triggering_element']['#name']) {
235
    case 'process_updates':
236

    
237
      // Save the connection settings to the DB.
238
      $filetransfer_backend = $form_state['values']['connection_settings']['authorize_filetransfer_default'];
239

    
240
      // If the database is available then try to save our settings. We have
241
      // to make sure it is available since this code could potentially (will
242
      // likely) be called during the installation process, before the
243
      // database is set up.
244
      try {
245
        $connection_settings = array();
246
        foreach ($form_state['values']['connection_settings'][$filetransfer_backend] as $key => $value) {
247
          // We do *not* want to store passwords in the database, unless the
248
          // backend explicitly says so via the magic #filetransfer_save form
249
          // property. Otherwise, we store everything that's not explicitly
250
          // marked with #filetransfer_save set to FALSE.
251
          if (!isset($form['connection_settings'][$filetransfer_backend][$key]['#filetransfer_save'])) {
252
            if ($form['connection_settings'][$filetransfer_backend][$key]['#type'] != 'password') {
253
              $connection_settings[$key] = $value;
254
            }
255
          }
256
          // The attribute is defined, so only save if set to TRUE.
257
          elseif ($form['connection_settings'][$filetransfer_backend][$key]['#filetransfer_save']) {
258
            $connection_settings[$key] = $value;
259
          }
260
        }
261
        // Set this one as the default authorize method.
262
        variable_set('authorize_filetransfer_default', $filetransfer_backend);
263
        // Save the connection settings minus the password.
264
        variable_set('authorize_filetransfer_connection_settings_' . $filetransfer_backend, $connection_settings);
265

    
266
        $filetransfer = authorize_get_filetransfer($filetransfer_backend, $form_state['values']['connection_settings'][$filetransfer_backend]);
267

    
268
        // Now run the operation.
269
        authorize_run_operation($filetransfer);
270
      }
271
      catch (Exception $e) {
272
        // If there is no database available, we don't care and just skip
273
        // this part entirely.
274
      }
275

    
276
      break;
277

    
278
    case 'enter_connection_settings':
279
      $form_state['rebuild'] = TRUE;
280
      break;
281

    
282
    case 'change_connection_type':
283
      $form_state['rebuild'] = TRUE;
284
      unset($form_state['values']['connection_settings']['authorize_filetransfer_default']);
285
      break;
286
  }
287
}
288

    
289
/**
290
 * Runs the operation specified in $_SESSION['authorize_operation'].
291
 *
292
 * @param $filetransfer
293
 *   The FileTransfer object to use for running the operation.
294
 */
295
function authorize_run_operation($filetransfer) {
296
  $operation = $_SESSION['authorize_operation'];
297
  unset($_SESSION['authorize_operation']);
298

    
299
  if (!empty($operation['page_title'])) {
300
    drupal_set_title($operation['page_title']);
301
  }
302

    
303
  require_once DRUPAL_ROOT . '/' . $operation['file'];
304
  call_user_func_array($operation['callback'], array_merge(array($filetransfer), $operation['arguments']));
305
}
306

    
307
/**
308
 * Gets a FileTransfer class for a specific transfer method and settings.
309
 *
310
 * @param $backend
311
 *   The FileTransfer backend to get the class for.
312
 * @param $settings
313
 *   Array of settings for the FileTransfer.
314
 *
315
 * @return
316
 *   An instantiated FileTransfer object for the requested method and settings,
317
 *   or FALSE if there was an error finding or instantiating it.
318
 */
319
function authorize_get_filetransfer($backend, $settings = array()) {
320
  $filetransfer = FALSE;
321
  if (!empty($_SESSION['authorize_filetransfer_info'][$backend])) {
322
    $backend_info = $_SESSION['authorize_filetransfer_info'][$backend];
323
    if (!empty($backend_info['file'])) {
324
      $file = $backend_info['file path'] . '/' . $backend_info['file'];
325
      require_once $file;
326
    }
327
    if (class_exists($backend_info['class'])) {
328
      // PHP 5.2 doesn't support $class::factory() syntax, so we have to
329
      // use call_user_func_array() until we can require PHP 5.3.
330
      $filetransfer = call_user_func_array(array($backend_info['class'], 'factory'), array(DRUPAL_ROOT, $settings));
331
    }
332
  }
333
  return $filetransfer;
334
}