/**
* Main process to apply patch.
* @access public
* @return true if patch is successfully applied
* false if failed
* @author Cindy Qi Li
*/
function applyPatch()
{
global $msg;
// Checks on
// 1. if there's error from class constructor
// 2. if github server is up. If not, consider all files manipulated by patch as modified
// 3. if the local file is customized by user
// 4. if script has write priviledge on local file/folder
// 5. if dependent patches have been installed
if (count($this->errors) > 0) {
print_errors($this->errors, $notes);
unset($this->errors);
return false;
}
if (!$this->pingDomain($this->github_tag_folder) || !$this->pingDomain($this->github_fetch_tags_url)) {
$msg->addInfo('CANNOT_CONNECT_GITHUB_SERVER');
$msg->printInfos();
$this->github_server_connected = false;
} else {
$this->github_server_connected = true;
}
if (!$this->checkDependentPatches()) {
return false;
}
if (!$this->checkAppliedVersion()) {
return false;
}
if (!$this->skipFilesModified && $this->hasFilesModified()) {
return false;
}
if (!$this->checkPriviledge()) {
return false;
}
// End of check
if (strlen(trim($this->patch_array['sql'])) > 0) {
$this->runSQL();
}
// Start applying patch
$this->createPatchesRecord($this->patch_summary_array);
// if no file action defined, update database and return true
if (!is_array($this->patch_array[files])) {
$updateInfo = array("status" => "Installed");
updatePatchesRecord($this->patch_id, $updateInfo);
return true;
}
foreach ($this->patch_array[files] as $row_num => $patch_file) {
$this->createPatchesFilesRecord($this->patch_array['files'][$row_num]);
if ($patch_file['action'] == 'alter') {
$this->alterFile($row_num);
} else {
if ($patch_file['action'] == 'add') {
$this->addFile($row_num);
} else {
if ($patch_file['action'] == 'delete') {
$this->deleteFile($row_num);
} else {
if ($patch_file['action'] == 'overwrite') {
$this->overwriteFile($row_num);
}
}
}
}
}
// if only has backup files info, patch is considered successfully installed
// if has permission to remove, considered partly installed
$updateInfo = array();
if (count($this->backup_files) > 0) {
foreach ($this->backup_files as $backup_file) {
$backup_files .= $backup_file . '|';
}
$updateInfo = array("backup_files" => my_add_null_slashes($backup_files));
if (count($this->patch_files) > 0) {
foreach ($this->patch_files as $patch_file) {
$patch_files .= $patch_file . '|';
}
$updateInfo = array_merge($updateInfo, array("patch_files" => my_add_null_slashes($patch_files)));
}
if (is_array($_SESSION['remove_permission']) && count($_SESSION['remove_permission'])) {
foreach ($_SESSION['remove_permission'] as $remove_permission_file) {
$remove_permission_files .= $remove_permission_file . '|';
}
$updateInfo = array_merge($updateInfo, array("remove_permission_files" => my_add_null_slashes($remove_permission_files), "status" => "Partly Installed"));
} else {
$updateInfo = array_merge($updateInfo, array("status" => "Installed"));
}
updatePatchesRecord($this->patch_id, $updateInfo);
unset($_SESSION['remove_permission']);
return true;
}
}
if (is_array($_SESSION['remove_permission'])) {
foreach ($_SESSION['remove_permission'] as $file) {
if (is_writable($file)) {
$permission_files[] = $file;
}
}
}
if (count($permission_files) == 0) {
$updateInfo = array("remove_permission_files" => "", "status" => "Installed");
updatePatchesRecord($patch_id, $updateInfo);
} else {
foreach ($permission_files as $permission_file) {
$remove_permission_files .= $permission_file . '|';
}
$updateInfo = array("remove_permission_files" => preg_quote($remove_permission_files), "status" => "Partly Installed");
updatePatchesRecord($patch_id, $updateInfo);
}
}
// display remove permission info
unset($_SESSION['remove_permission']);
$sql = "SELECT * FROM " . TABLE_PREFIX . "patches \n\t WHERE patches_id = " . $patch_id;
$result = mysql_query($sql, $db) or die(mysql_error());
$row = mysql_fetch_assoc($result);
if ($row["remove_permission_files"] != "") {
$remove_permission_files = $_SESSION['remove_permission'] = get_array_by_delimiter($row["remove_permission_files"], "|");
if (count($_SESSION['remove_permission']) > 0) {
if ($_POST['done']) {
$msg->printErrors('REMOVE_WRITE_PERMISSION');
} else {
$msg->printInfos('PATCH_INSTALLED_AND_REMOVE_PERMISSION');
}