| 1 | <?php |
| 2 | /* |
| 3 | +--------------------------------------------------------------------+ |
| 4 | | CiviCRM version 4.7 | |
| 5 | +--------------------------------------------------------------------+ |
| 6 | | Copyright CiviCRM LLC (c) 2004-2017 | |
| 7 | +--------------------------------------------------------------------+ |
| 8 | | This file is a part of CiviCRM. | |
| 9 | | | |
| 10 | | CiviCRM is free software; you can copy, modify, and distribute it | |
| 11 | | under the terms of the GNU Affero General Public License | |
| 12 | | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. | |
| 13 | | | |
| 14 | | CiviCRM is distributed in the hope that it will be useful, but | |
| 15 | | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| 17 | | See the GNU Affero General Public License for more details. | |
| 18 | | | |
| 19 | | You should have received a copy of the GNU Affero General Public | |
| 20 | | License and the CiviCRM Licensing Exception along | |
| 21 | | with this program; if not, contact CiviCRM LLC | |
| 22 | | at info[AT]civicrm[DOT]org. If you have questions about the | |
| 23 | | GNU Affero General Public License or the licensing of CiviCRM, | |
| 24 | | see the CiviCRM license FAQ at http://civicrm.org/licensing | |
| 25 | +--------------------------------------------------------------------+ |
| 26 | */ |
| 27 | |
| 28 | /** |
| 29 | * |
| 30 | * @package CRM |
| 31 | * @copyright CiviCRM LLC (c) 2004-2017 |
| 32 | */ |
| 33 | class CRM_ACL_API { |
| 34 | |
| 35 | /** |
| 36 | * The various type of permissions. |
| 37 | * |
| 38 | * @var int |
| 39 | */ |
| 40 | const EDIT = 1; |
| 41 | const VIEW = 2; |
| 42 | const DELETE = 3; |
| 43 | const CREATE = 4; |
| 44 | const SEARCH = 5; |
| 45 | const ALL = 6; |
| 46 | |
| 47 | /** |
| 48 | * Given a permission string, check for access requirements |
| 49 | * |
| 50 | * @param string $str |
| 51 | * The permission to check. |
| 52 | * @param int $contactID |
| 53 | * The contactID for whom the check is made. |
| 54 | * |
| 55 | * @return bool |
| 56 | * true if yes, else false |
| 57 | */ |
| 58 | public static function check($str, $contactID = NULL) { |
| 59 | if ($contactID == NULL) { |
| 60 | $contactID = CRM_Core_Session::getLoggedInContactID(); |
| 61 | } |
| 62 | |
| 63 | if (!$contactID) { |
| 64 | // anonymous user |
| 65 | $contactID = 0; |
| 66 | } |
| 67 | |
| 68 | return CRM_ACL_BAO_ACL::check($str, $contactID); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Get the permissioned where clause for the user. |
| 73 | * |
| 74 | * @param int $type |
| 75 | * The type of permission needed. |
| 76 | * @param array $tables |
| 77 | * (reference ) add the tables that are needed for the select clause. |
| 78 | * @param array $whereTables |
| 79 | * (reference ) add the tables that are needed for the where clause. |
| 80 | * @param int $contactID |
| 81 | * The contactID for whom the check is made. |
| 82 | * @param bool $onlyDeleted |
| 83 | * Whether to include only deleted contacts. |
| 84 | * @param bool $skipDeleteClause |
| 85 | * Don't add delete clause if this is true,. |
| 86 | * this means it is handled by generating query |
| 87 | * @param bool $skipOwnContactClause |
| 88 | * Do not add 'OR contact_id = $userID' to the where clause. |
| 89 | * This is a hideously inefficient query and should be avoided |
| 90 | * wherever possible. |
| 91 | * |
| 92 | * @return string |
| 93 | * the group where clause for this user |
| 94 | */ |
| 95 | public static function whereClause( |
| 96 | $type, |
| 97 | &$tables, |
| 98 | &$whereTables, |
| 99 | $contactID = NULL, |
| 100 | $onlyDeleted = FALSE, |
| 101 | $skipDeleteClause = FALSE, |
| 102 | $skipOwnContactClause = FALSE |
| 103 | ) { |
| 104 | // the default value which is valid for the final AND |
| 105 | $deleteClause = ' ( 1 ) '; |
| 106 | if (!$skipDeleteClause) { |
| 107 | if (CRM_Core_Permission::check('access deleted contacts') and $onlyDeleted) { |
| 108 | $deleteClause = '(contact_a.is_deleted)'; |
| 109 | } |
| 110 | else { |
| 111 | // CRM-6181 |
| 112 | $deleteClause = '(contact_a.is_deleted = 0)'; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | // first see if the contact has edit / view all contacts |
| 117 | if (CRM_Core_Permission::check('edit all contacts') || |
| 118 | ($type == self::VIEW && CRM_Core_Permission::check('view all contacts')) |
| 119 | ) { |
| 120 | return $deleteClause; |
| 121 | } |
| 122 | |
| 123 | if (!$contactID) { |
| 124 | $contactID = CRM_Core_Session::getLoggedInContactID(); |
| 125 | } |
| 126 | $contactID = (int) $contactID; |
| 127 | |
| 128 | $where = implode(' AND ', |
| 129 | array( |
| 130 | CRM_ACL_BAO_ACL::whereClause($type, |
| 131 | $tables, |
| 132 | $whereTables, |
| 133 | $contactID |
| 134 | ), |
| 135 | $deleteClause, |
| 136 | ) |
| 137 | ); |
| 138 | |
| 139 | // Add permission on self if we really hate our server or have hardly any contacts. |
| 140 | if (!$skipOwnContactClause && $contactID && (CRM_Core_Permission::check('edit my contact') || |
| 141 | $type == self::VIEW && CRM_Core_Permission::check('view my contact')) |
| 142 | ) { |
| 143 | $where = "(contact_a.id = $contactID OR ($where))"; |
| 144 | } |
| 145 | return $where; |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Get all the groups the user has access to for the given operation. |
| 150 | * |
| 151 | * @param int $type |
| 152 | * The type of permission needed. |
| 153 | * @param int $contactID |
| 154 | * The contactID for whom the check is made. |
| 155 | * |
| 156 | * @param string $tableName |
| 157 | * @param null $allGroups |
| 158 | * @param null $includedGroups |
| 159 | * |
| 160 | * @return array |
| 161 | * the ids of the groups for which the user has permissions |
| 162 | */ |
| 163 | public static function group( |
| 164 | $type, |
| 165 | $contactID = NULL, |
| 166 | $tableName = 'civicrm_saved_search', |
| 167 | $allGroups = NULL, |
| 168 | $includedGroups = NULL |
| 169 | ) { |
| 170 | if ($contactID == NULL) { |
| 171 | $contactID = CRM_Core_Session::getLoggedInContactID(); |
| 172 | } |
| 173 | |
| 174 | if (!$contactID) { |
| 175 | // anonymous user |
| 176 | $contactID = 0; |
| 177 | } |
| 178 | |
| 179 | return CRM_ACL_BAO_ACL::group($type, $contactID, $tableName, $allGroups, $includedGroups); |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Check if the user has access to this group for operation $type |
| 184 | * |
| 185 | * @param int $type |
| 186 | * The type of permission needed. |
| 187 | * @param int $groupID |
| 188 | * @param int $contactID |
| 189 | * The contactID for whom the check is made. |
| 190 | * @param string $tableName |
| 191 | * @param null $allGroups |
| 192 | * @param null $includedGroups |
| 193 | * |
| 194 | * @return bool |
| 195 | */ |
| 196 | public static function groupPermission( |
| 197 | $type, |
| 198 | $groupID, |
| 199 | $contactID = NULL, |
| 200 | $tableName = 'civicrm_saved_search', |
| 201 | $allGroups = NULL, |
| 202 | $includedGroups = NULL |
| 203 | ) { |
| 204 | |
| 205 | if (!isset(Civi::$statics[__CLASS__]) || !isset(Civi::$statics[__CLASS__]['group_permission'])) { |
| 206 | Civi::$statics[__CLASS__]['group_permission'] = array(); |
| 207 | } |
| 208 | |
| 209 | if (!$contactID) { |
| 210 | $contactID = CRM_Core_Session::singleton()->getLoggedInContactID(); |
| 211 | } |
| 212 | |
| 213 | $key = "{$tableName}_{$type}_{$contactID}"; |
| 214 | if (!array_key_exists($key, Civi::$statics[__CLASS__]['group_permission'])) { |
| 215 | Civi::$statics[__CLASS__]['group_permission'][$key] = self::group($type, $contactID, $tableName, $allGroups, $includedGroups); |
| 216 | } |
| 217 | |
| 218 | return in_array($groupID, Civi::$statics[__CLASS__]['group_permission'][$key]); |
| 219 | } |
| 220 | |
| 221 | } |