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<?php
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function level1_menu($may_cache) {
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$items = array();
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if ($may_cache) {
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$items[] = array(
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'path' => 'admin/settings/level1',
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'title' => t('Level1'),
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'description' => t('Level1 Access Settings'),
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'callback' => 'drupal_get_form',
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'callback arguments' => 'level1_admin_settings',
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'access' => user_access('administer site configuration'),
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);
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}
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return $items;
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}
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function level1_admin_settings() {
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$options = array();
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$options[0] = '<none>';
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$vocabs = taxonomy_get_vocabularies();
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foreach ($vocabs as $vid => $vocab) {
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$options[$vid] = $vocab->name;
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}
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$form['level1_category'] = array(
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'#title' => t('Level1 Category'),
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'#type' => 'select',
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'#options' => $options,
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'#default_value' => variable_get('level1_category', ''),
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'#description' => 'Vocabulary for defining Level1 node access grants.',
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'#suffix' => '<p>NOTE: You must ' . l('rebuild', 'admin/content/node-settings/rebuild', array(), drupal_get_destination()) . ' your node permissions for any changes to take effect.</p>'
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);
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return system_settings_form($form);
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}
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function level1_node_grants($account, $op) {
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$terms = array();
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if ($account->level1_access > 0) {
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$vid = variable_get('level1_category', '0');
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$tree = taxonomy_get_tree($vid);
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foreach ($tree as $terminfo) {
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$terms[] = $terminfo->tid;
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if ($terminfo->tid == $account->level1_access)
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break;
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}
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}
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$grants = array('level1_access' => $terms);
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return $grants;
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}
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function level1_node_access_records($node) {
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$vid = variable_get('level1_category', '0');
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$node_terms = taxonomy_node_get_terms_by_vocabulary($node->nid, $vid);
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$grants = array();
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foreach ($node_terms as $term) {
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$grant = db_fetch_object(db_query("SELECT grant_view, grant_update, grant_delete FROM {level1_access} WHERE nid = %d AND gid = %d", $node->nid, $term->tid));
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if ($grant) {
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$grants[] = array(
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'realm' => 'level1_access',
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'gid' => $term->tid,
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'grant_view' => $grant->grant_view,
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'grant_update' => $grant->grant_update,
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'grant_delete' => $grant->grant_delete,
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'priority' => 0,
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);
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}
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}
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return $grants;
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}
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function level1_user_operations() {
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global $form_values;
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$vid = variable_get('level1_category', '0');
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$tree = taxonomy_get_tree($vid);
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foreach ($tree as $term) {
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$grants['level1_access_set_level-'.$term->tid] = t('!term', array('!term' => $term->name));
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}
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$operations = array();
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if (count($grants) > 0)
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$operations["Set Level1 Access"] = array('label' => $grants);
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if ($form_values) {
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$operation_args = explode('-', $form_values['operation']);
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if ($operation_args[0] == 'level1_access_set_level') {
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if (user_access('administer access control')) {
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$operations[$form_values['operation']] = array(
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'callback' => 'level1_user_operations_set_level',
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'callback arguments' => array($operation_args[1]),
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);
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}
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else {
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watchdog('security', t('Level1: Detected malicious attempt to alter user access permissions.'), WATCHDOG_WARNING);
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return;
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}
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}
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}
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return $operations;
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}
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function level1_user_operations_set_level($accounts, $tid) {
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foreach ($accounts as $uid) {
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$account = user_load(array('uid' => (int)$uid));
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user_save($account, array('level1_access' => $tid));
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}
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}
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function level1_user($op, &$edit, &$account, $category = NULL) {
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$function = "level1_user_op_$op";
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if (function_exists($function))
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return $function($edit, &$account, $category);
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}
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function level1_user_op_form(&$edit, &$account, $category) {
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if (user_access('administer users')) {
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$vid = variable_get('level1_category', '0');
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$level_select = taxonomy_form($vid, $account->level1_access);
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$level_select['#title'] = t('Level1 Access Level');
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$level_select['#description'] = t('This user will be able to access all content that is categorized at or below this level');
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$form['account']['level1_access'] = $level_select;
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return $form;
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}
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}
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function level1_user_op_view(&$edit, &$account, $category) {
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if (user_access('administer users')) {
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$vid = variable_get('level1_category', '0');
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$tree = taxonomy_get_tree($vid);
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$items['level1'] = array('title' => t('Current Level'),
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'value' => "None",
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'class' => 'member',
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);
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while (count($tree) > 0) {
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$value = array_pop($tree);
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if ($value->tid == $account->level1_access) {
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$items['level1'] = array('title' => t('Current Level'),
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'value' => $value->name,
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'class' => 'member',
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);
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}
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}
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return array(t('Level1 Access') => $items);
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}
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}
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function level1_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
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$vid = variable_get('level1_category', '0');
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$vocab = taxonomy_get_vocabulary($vid);
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if (in_array($node->type, $vocab->nodes)) {
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$function = "level1_nodeapi_op_$op";
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//drupal_set_message($function);
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if (function_exists($function))
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return $function($node, $a3, $a4);
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}
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}
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function level1_nodeapi_op_load(&$node, $a3, $a4) {
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$result = db_fetch_array(db_query('SELECT grant_view, grant_update, grant_delete FROM {level1_access} WHERE nid = %d', $node->nid));
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if (!$result) {
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// TODO add defaults per node type
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return array('level1_grants' => array('grant_view' => 0, 'grant_update' => 0, 'grant_delete' => 0));
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}
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$add = array('level1_grants' => $result);
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return $add;
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}
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function level1_nodeapi_op_prepare(&$node, $a3, $a4) {
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if ($node->level1_grants == NULL) {
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// TODO add defaults per node type
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$node->level1_grants = array('grant_view' => 0, 'grant_update' => 0, 'grant_delete' => 0);
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}
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}
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function level1_nodeapi_op_insert(&$node, $a3, $a4) {
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level1_update_level1_access($node);
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}
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function level1_nodeapi_op_update(&$node, $a3, $a4) {
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level1_update_level1_access($node);
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}
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function level1_nodeapi_op_delete(&$node, $a3, $a4) {
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db_query("DELETE FROM {level1_access} WHERE nid = %d", $node->nid);
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}
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function level1_update_level1_access(&$node) {
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db_query("DELETE FROM {level1_access} WHERE nid = %d", $node->nid);
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$vid = variable_get('level1_category', '0');
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foreach ($node->taxonomy[$vid] as $tid) {
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if ($tid != 0) {
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db_query("INSERT INTO {level1_access} (nid, gid, realm, grant_view, grant_update, grant_delete) VALUES (%d, %d, '%s', %d, %d, %d)", array($node->nid, $tid, "level1_access") + $node->level1_grants);
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}
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}
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}
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function level1_form_alter($form_id, &$form) {
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if (strpos($form_id, 'node_form')) {
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level1_form_alter_node_form($form);
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}
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}
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function level1_form_alter_node_form(&$form) {
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$vid = variable_get('level1_category', '0');
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$vocab = taxonomy_get_vocabulary($vid);
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if (in_array($form['type']['#value'], $vocab->nodes)) {
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$node = $form['#node'];
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$temp = $form['taxonomy'][$vid];
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$form['taxonomy'][$vid] = array(
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'#type' => 'fieldset',
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'#tree' => TRUE,
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'#title' => t('Level1 Access Grants'),
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'#collapsible' => TRUE,
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'#collapsed' => FALSE,
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'#weight' => $form['taxonomy'][$vid]['#weight']
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);
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$form['taxonomy'][$vid][$vid] = $temp;
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if ($node->level1_grants) {
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// The grant information must not be part of the $form['taxonomy'] tree otherwise it will break the taxonomy_node_save method
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// T o handle this add in a wrapper for the grant information with #tree = false then add the grant checkboxes to it
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$form['taxonomy'][$vid]['grants'] = array('#tree' => FALSE);
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$form['taxonomy'][$vid]['grants']['level1_grants'] = array('#tree' => TRUE);
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foreach ($node->level1_grants as $key => $value) {
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$form['taxonomy'][$vid]['grants']['level1_grants'][$key] = array(
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'#type' => 'checkbox',
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'#title' => t(str_replace('_',' ', $key)),
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'#default_value' => $value
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);
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}
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}
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}
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}
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