/**
* The main function of the hook.
*
* Expects the following arguments:
*
* - $argv[1] - The path of the configuration file, xgit-config.php.
* - $argv[2] - The name of the ref being stored.
* - $argv[3] - The old object name stored in the ref.
* - $argv[4] - The new objectname to be stored in the ref.
*
* @param argc
* The number of arguments on the command line.
*
* @param argv
* Array of the arguments.
*/
function xgit_init($argc, $argv)
{
$this_file = array_shift($argv);
// argv[0]
if ($argc != 5) {
xgit_help($this_file, STDERR);
exit(VERSIONCONTROL_GIT_ERROR_WRONG_ARGC);
}
$config_file = array_shift($argv);
// argv[1]
$ref = array_shift($argv);
// argv[2]
$old_obj = array_shift($argv);
// argv[3]
$new_obj = array_shift($argv);
// argv[4]
// Load the configuration file and bootstrap Drupal.
if (!file_exists($config_file)) {
fwrite(STDERR, t('Error: failed to load configuration file.') . "\n");
exit(VERSIONCONTROL_GIT_ERROR_NO_CONFIG);
}
include_once $config_file;
global $xgit;
// Admins and other privileged users don't need to go through any checks.
if (!in_array($xgit['uid'], $xgit['allowed_users'])) {
// Do a full Drupal bootstrap.
xgit_bootstrap();
$ref_type = xgit_ref_type($ref);
if ($ref_type === FALSE) {
fwrite(STDERR, "Given reference '{$ref}' is invalid.\n\n");
exit(VERSIONCONTROL_GIT_ERROR_INVALID_REF);
}
try {
_xgit_assert_type(array($new_obj => array('commit', 'tag', 'empty'), $old_obj => array('commit', 'tag', 'empty')));
} catch (Exception $e) {
fwrite(STDERR, $e->getMessage());
exit(VERSIONCONTROL_GIT_ERROR_INVALID_OBJ);
}
// Debugging help
if ($GLOBALS['xgit_debug']) {
$commits = xgit_get_commits($old_obj, $new_obj);
$commits = implode(' ', $commits);
fwrite(STDERR, 'DEBUG COMMITS:' . $commits . "\n");
}
$label = xgit_label_for($ref, $old_obj, $new_obj);
foreach (xgit_get_commits($old_obj, $new_obj) as $commit) {
$access = xgit_check_commit_access($commit, $label);
// Fail and print out error messages if commit access has been denied.
if (!$access) {
fwrite(STDERR, implode("\n\n", versioncontrol_get_access_errors()) . "\n\n");
exit(VERSIONCONTROL_GIT_ERROR_NO_ACCESS);
}
}
}
// Everything succeeded. Allow operation to complete.
exit(0);
}
function xgit_bootstrap()
{
global $xgit;
// Add $drupal_path to current value of the PHP include_path.
set_include_path(get_include_path() . PATH_SEPARATOR . $xgit['drupal_path']);
if (empty($_ENV['GIT_DRUPAL_UID'])) {
fwrite(STDERR, "Error: No environment variable 'GIT_DRUPAL_UID' set or it is empty.\n");
exit(VERSIONCONTROL_GIT_ERROR_NO_UID);
}
$xgit['uid'] = $_ENV['GIT_DRUPAL_UID'];
chdir($xgit['drupal_path']);
// Bootstrap Drupal so we can use drupal functions to access the databases, etc.
if (!file_exists('./includes/bootstrap.inc')) {
fwrite(STDERR, "Error: failed to load Drupal's bootstrap.inc file.\n");
exit(VERSIONCONTROL_GIT_ERROR_FAILED_BOOTSTRAP);
}
// Set up the multisite directory if necessary.
if ($xgit['multisite_directory']) {
$_SERVER['HTTP_HOST'] = $xgit['multisite_directory'];
// Set a dummy script name, so the multisite configuration
// file search will always trigger.
$_SERVER['SCRIPT_NAME'] = '/foo';
}
require_once './includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
// Overwrite db_prefix if this is a simpletest run.
if (isset($GLOBALS['simpletest_db_prefix'])) {
$GLOBALS['db_prefix'] = $GLOBALS['simpletest_db_prefix'];
}
require_once drupal_get_path('module', 'versioncontrol_git') . '/versioncontrol_git.module';
require_once drupal_get_path('module', 'versioncontrol_git') . '/versioncontrol_git.log.inc';
$xgit['repo'] = versioncontrol_get_repository($xgit['repo_id']);
if (!isset($_ENV['GIT_DIR'])) {
xgit_help($this_file, STDERR);
exit(VERSIONCONTROL_GIT_ERROR_NO_GIT_DIR);
}
$xgit['git_dir'] = $_ENV['PWD'];
if (empty($xgit['repo'])) {
$message = "Error: git repository with id '%s' does not exist.\n";
fwrite(STDERR, sprintf($message, $xgit['repo_id']));
exit(VERSIONCONTROL_GIT_ERROR_NO_REPOSITORY);
}
}