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rARC/scripts/arcanist.php
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arcanist.php
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#!/usr/bin/env php
<?php
sanity_check_environment();
require_once dirname(__FILE__).'/__init_script__.php';
/**
* Adjust 'include_path' to add locations where we'll search for libraries.
* We look in these places:
*
* - Next to 'arcanist/'.
* - Anywhere in the normal PHP 'include_path'.
* - Inside 'arcanist/externals/includes/'.
*/
function arcanist_adjust_php_include_path() {
// The 'arcanist/' directory.
$arcanist_dir = dirname(dirname(__FILE__));
// The parent directory of 'arcanist/'.
$parent_dir = dirname($arcanist_dir);
// The 'arcanist/externals/includes/' directory.
$include_dir = implode(
DIRECTORY_SEPARATOR,
array(
$arcanist_dir,
'externals',
'includes',
));
$php_include_path = ini_get('include_path');
$php_include_path = implode(
PATH_SEPARATOR,
array(
$parent_dir,
$php_include_path,
$include_dir,
));
ini_set('include_path', $php_include_path);
}
arcanist_adjust_php_include_path();
ini_set('memory_limit', -1);
$original_argv = $argv;
$base_args = new PhutilArgumentParser($argv);
$base_args->parseStandardArguments();
$base_args->parsePartial(
array(
array(
'name' => 'load-phutil-library',
'param' => 'path',
'help' => pht('Load a libphutil library.'),
'repeat' => true,
),
array(
'name' => 'library',
'param' => 'path',
'help' => pht('Load a library (same as --load-phutil-library).'),
'repeat' => true,
),
array(
'name' => 'arcrc-file',
'param' => 'filename',
),
array(
'name' => 'conduit-uri',
'param' => 'uri',
'help' => pht('Connect to Phabricator install specified by __uri__.'),
),
array(
'name' => 'conduit-token',
'param' => 'token',
'help' => pht('Use a specific authentication token.'),
),
array(
'name' => 'anonymous',
'help' => pht('Run workflow as a public user, without authenticating.'),
),
array(
'name' => 'config',
'param' => 'key=value',
'repeat' => true,
'help' => pht(
'Specify a runtime configuration value. This will take precedence '.
'over static values, and only affect the current arcanist invocation.'),
),
));
$config_trace_mode = $base_args->getArg('trace');
$force_conduit = $base_args->getArg('conduit-uri');
$force_token = $base_args->getArg('conduit-token');
$custom_arcrc = $base_args->getArg('arcrc-file');
$is_anonymous = $base_args->getArg('anonymous');
$load = array_merge(
$base_args->getArg('load-phutil-library'),
$base_args->getArg('library'));
$help = $base_args->getArg('help');
$args = array_values($base_args->getUnconsumedArgumentVector());
$working_directory = getcwd();
$console = PhutilConsole::getConsole();
$config = null;
$workflow = null;
try {
if ($config_trace_mode) {
echo tsprintf(
"**<bg:magenta> %s </bg>** %s\n",
pht('ARGV'),
csprintf('%Ls', $original_argv));
$libraries = array(
'arcanist',
);
foreach ($libraries as $library_name) {
echo tsprintf(
"**<bg:magenta> %s </bg>** %s\n",
pht('LOAD'),
pht(
'Loaded "%s" from "%s".',
$library_name,
phutil_get_library_root($library_name)));
}
}
if (!$args) {
if ($help) {
$args = array('help');
} else {
throw new ArcanistUsageException(
pht('No command provided. Try `%s`.', 'arc help'));
}
} else if ($help) {
array_unshift($args, 'help');
}
$configuration_manager = new ArcanistConfigurationManager();
if ($custom_arcrc) {
$configuration_manager->setUserConfigurationFileLocation($custom_arcrc);
}
$global_config = $configuration_manager->readUserArcConfig();
$system_config = $configuration_manager->readSystemArcConfig();
$runtime_config = $configuration_manager->applyRuntimeArcConfig($base_args);
$working_copy =
ArcanistWorkingCopyIdentity::newFromPath($working_directory);
$configuration_manager->setWorkingCopyIdentity($working_copy);
// Load additional libraries, which can provide new classes like configuration
// overrides, linters and lint engines, unit test engines, etc.
// If the user specified "--load-phutil-library" one or more times from
// the command line, we load those libraries **instead** of whatever else
// is configured. This is basically a debugging feature to let you force
// specific libraries to load regardless of the state of the world.
if ($load) {
$console->writeLog(
"%s\n",
pht(
'Using `%s` flag, configuration will be ignored and configured '.
'libraries will not be loaded.',
'--load-phutil-library'));
// Load the flag libraries. These must load, since the user specified them
// explicitly.
arcanist_load_libraries(
$load,
$must_load = true,
$lib_source = pht('a "%s" flag', '--load-phutil-library'),
$working_copy);
} else {
// Load libraries in system 'load' config. In contrast to global config, we
// fail hard here because this file is edited manually, so if 'arc' breaks
// that doesn't make it any more difficult to correct.
arcanist_load_libraries(
idx($system_config, 'load', array()),
$must_load = true,
$lib_source = pht('the "%s" setting in system config', 'load'),
$working_copy);
// Load libraries in global 'load' config, as per "arc set-config load". We
// need to fail softly if these break because errors would prevent the user
// from running "arc set-config" to correct them.
arcanist_load_libraries(
idx($global_config, 'load', array()),
$must_load = false,
$lib_source = pht('the "%s" setting in global config', 'load'),
$working_copy);
// Load libraries in ".arcconfig". Libraries here must load.
arcanist_load_libraries(
$working_copy->getProjectConfig('load'),
$must_load = true,
$lib_source = pht('the "%s" setting in "%s"', 'load', '.arcconfig'),
$working_copy);
// Load libraries in ".arcconfig". Libraries here must load.
arcanist_load_libraries(
idx($runtime_config, 'load', array()),
$must_load = true,
$lib_source = pht('the %s argument', '--config "load=[...]"'),
$working_copy);
}
$user_config = $configuration_manager->readUserConfigurationFile();
$config = new ArcanistConfiguration();
$command = strtolower($args[0]);
$args = array_slice($args, 1);
$workflow = $config->selectWorkflow(
$command,
$args,
$configuration_manager,
$console);
$workflow->setConfigurationManager($configuration_manager);
$workflow->setArcanistConfiguration($config);
$workflow->setCommand($command);
$workflow->setWorkingDirectory($working_directory);
$workflow->parseArguments($args);
// Write the command into the environment so that scripts (for example, local
// Git commit hooks) can detect that they're being run via `arc` and change
// their behaviors.
putenv('ARCANIST='.$command);
$need_working_copy = $workflow->requiresWorkingCopy();
$supported_vcs_types = $workflow->getSupportedRevisionControlSystems();
$vcs_type = $working_copy->getVCSType();
if ($vcs_type || $need_working_copy) {
if (!in_array($vcs_type, $supported_vcs_types)) {
throw new ArcanistUsageException(
pht(
'`%s %s` is only supported under %s.',
'arc',
$workflow->getWorkflowName(),
implode(', ', $supported_vcs_types)));
}
}
$need_conduit = $workflow->requiresConduit();
$need_auth = $workflow->requiresAuthentication();
$need_repository_api = $workflow->requiresRepositoryAPI();
$want_repository_api = $workflow->desiresRepositoryAPI();
$want_working_copy = $workflow->desiresWorkingCopy() ||
$want_repository_api;
$need_conduit = $need_conduit ||
$need_auth;
$need_working_copy = $need_working_copy ||
$need_repository_api;
if ($need_working_copy || $want_working_copy) {
if ($need_working_copy && !$working_copy->getVCSType()) {
throw new ArcanistUsageException(
pht(
'This command must be run in a Git, Mercurial or Subversion '.
'working copy.'));
}
$configuration_manager->setWorkingCopyIdentity($working_copy);
}
if ($force_conduit) {
$conduit_uri = $force_conduit;
} else {
$conduit_uri = $configuration_manager->getConfigFromAnySource(
'phabricator.uri');
if ($conduit_uri === null) {
$conduit_uri = $configuration_manager->getConfigFromAnySource('default');
}
}
if ($conduit_uri) {
// Set the URI path to '/api/'. TODO: Originally, I contemplated letting
// you deploy Phabricator somewhere other than the domain root, but ended
// up never pursuing that. We should get rid of all "/api/" silliness
// in things users are expected to configure. This is already happening
// to some degree, e.g. "arc install-certificate" does it for you.
$conduit_uri = new PhutilURI($conduit_uri);
$conduit_uri->setPath('/api/');
$conduit_uri = (string)$conduit_uri;
}
$workflow->setConduitURI($conduit_uri);
// Apply global CA bundle from configs.
$ca_bundle = $configuration_manager->getConfigFromAnySource('https.cabundle');
if ($ca_bundle) {
$ca_bundle = Filesystem::resolvePath(
$ca_bundle, $working_copy->getProjectRoot());
HTTPSFuture::setGlobalCABundleFromPath($ca_bundle);
}
$blind_key = 'https.blindly-trust-domains';
$blind_trust = $configuration_manager->getConfigFromAnySource($blind_key);
if ($blind_trust) {
$trust_extension = PhutilHTTPEngineExtension::requireExtension(
ArcanistBlindlyTrustHTTPEngineExtension::EXTENSIONKEY);
$trust_extension->setDomains($blind_trust);
}
if ($need_conduit) {
if (!$conduit_uri) {
$message = phutil_console_format(
"%s\n\n - %s\n - %s\n - %s\n",
pht(
'This command requires arc to connect to a Phabricator install, '.
'but no Phabricator installation is configured. To configure a '.
'Phabricator URI:'),
pht(
'set a default location with `%s`; or',
'arc set-config default <uri>'),
pht(
'specify `%s` explicitly; or',
'--conduit-uri=uri'),
pht(
"run `%s` in a working copy with an '%s'.",
'arc',
'.arcconfig'));
$message = phutil_console_wrap($message);
throw new ArcanistUsageException($message);
}
$workflow->establishConduit();
}
$hosts_config = idx($user_config, 'hosts', array());
$host_config = idx($hosts_config, $conduit_uri, array());
$user_name = idx($host_config, 'user');
$certificate = idx($host_config, 'cert');
$conduit_token = idx($host_config, 'token');
if ($force_token) {
$conduit_token = $force_token;
}
if ($is_anonymous) {
$conduit_token = null;
}
$description = implode(' ', $original_argv);
$credentials = array(
'user' => $user_name,
'certificate' => $certificate,
'description' => $description,
'token' => $conduit_token,
);
$workflow->setConduitCredentials($credentials);
$engine = id(new ArcanistConduitEngine())
->setConduitURI($conduit_uri)
->setConduitToken($conduit_token);
$workflow->setConduitEngine($engine);
if ($need_auth) {
if ((!$user_name || !$certificate) && (!$conduit_token)) {
$arc = 'arc';
if ($force_conduit) {
$arc .= csprintf(' --conduit-uri=%s', $conduit_uri);
}
$conduit_domain = id(new PhutilURI($conduit_uri))->getDomain();
throw new ArcanistUsageException(
phutil_console_format(
"%s\n\n%s\n\n%s **%s:**\n\n $ **{$arc} install-certificate**\n",
pht('YOU NEED TO AUTHENTICATE TO CONTINUE'),
pht(
'You are trying to connect to a server (%s) that you '.
'do not have any credentials stored for.',
$conduit_domain),
pht('To retrieve and store credentials for this server,'),
pht('run this command')));
}
$workflow->authenticateConduit();
}
if ($need_repository_api ||
($want_repository_api && $working_copy->getVCSType())) {
$repository_api = ArcanistRepositoryAPI::newAPIFromConfigurationManager(
$configuration_manager);
$workflow->setRepositoryAPI($repository_api);
}
$listeners = $configuration_manager->getConfigFromAnySource(
'events.listeners');
if ($listeners) {
foreach ($listeners as $listener) {
$console->writeLog(
"%s\n",
pht("Registering event listener '%s'.", $listener));
try {
id(new $listener())->register();
} catch (PhutilMissingSymbolException $ex) {
// Continue anyway, since you may otherwise be unable to run commands
// like `arc set-config events.listeners` in order to repair the damage
// you've caused. We're writing out the entire exception here because
// it might not have been triggered by the listener itself (for example,
// the listener might use a bad class in its register() method).
$console->writeErr(
"%s\n",
pht(
"ERROR: Failed to load event listener '%s': %s",
$listener,
$ex->getMessage()));
}
}
}
$config->willRunWorkflow($command, $workflow);
$workflow->willRunWorkflow();
try {
$err = $workflow->run();
$config->didRunWorkflow($command, $workflow, $err);
} catch (Exception $e) {
$workflow->finalize();
throw $e;
}
$workflow->finalize();
exit((int)$err);
} catch (ArcanistNoEffectException $ex) {
echo $ex->getMessage()."\n";
} catch (Exception $ex) {
$is_usage = ($ex instanceof ArcanistUsageException);
if ($is_usage) {
fwrite(STDERR, phutil_console_format(
"**%s** %s\n",
pht('Usage Exception:'),
rtrim($ex->getMessage())));
}
if ($config) {
$config->didAbortWorkflow($command, $workflow, $ex);
}
if ($config_trace_mode) {
fwrite(STDERR, "\n");
throw $ex;
}
if (!$is_usage) {
fwrite(STDERR, phutil_console_format(
"<bg:red>** %s **</bg>\n", pht('Exception')));
while ($ex) {
fwrite(STDERR, $ex->getMessage()."\n");
if ($ex instanceof PhutilProxyException) {
$ex = $ex->getPreviousException();
} else {
$ex = null;
}
}
fwrite(STDERR, phutil_console_format(
"(%s)\n",
pht('Run with `%s` for a full exception trace.', '--trace')));
}
exit(1);
}
/**
* Perform some sanity checks against the possible diversity of PHP builds in
* the wild, like very old versions and builds that were compiled with flags
* that exclude core functionality.
*/
function sanity_check_environment() {
// NOTE: We don't have phutil_is_windows() yet here.
$is_windows = (DIRECTORY_SEPARATOR != '/');
// We use stream_socket_pair() which is not available on Windows earlier.
$min_version = ($is_windows ? '5.3.0' : '5.2.3');
$cur_version = phpversion();
if (version_compare($cur_version, $min_version, '<')) {
die_with_bad_php(
"You are running PHP version '{$cur_version}', which is older than ".
"the minimum version, '{$min_version}'. Update to at least ".
"'{$min_version}'.");
}
if ($is_windows) {
$need_functions = array(
'curl_init' => array('builtin-dll', 'php_curl.dll'),
);
} else {
$need_functions = array(
'curl_init' => array(
'text',
"You need to install the cURL PHP extension, maybe with ".
"'apt-get install php5-curl' or 'yum install php53-curl' or ".
"something similar.",
),
'json_decode' => array('flag', '--without-json'),
);
}
$problems = array();
$config = null;
$show_config = false;
foreach ($need_functions as $fname => $resolution) {
if (function_exists($fname)) {
continue;
}
static $info;
if ($info === null) {
ob_start();
phpinfo(INFO_GENERAL);
$info = ob_get_clean();
$matches = null;
if (preg_match('/^Configure Command =>\s*(.*?)$/m', $info, $matches)) {
$config = $matches[1];
}
}
$generic = true;
list($what, $which) = $resolution;
if ($what == 'flag' && strpos($config, $which) !== false) {
$show_config = true;
$generic = false;
$problems[] =
"This build of PHP was compiled with the configure flag '{$which}', ".
"which means it does not have the function '{$fname}()'. This ".
"function is required for arc to run. Rebuild PHP without this flag. ".
"You may also be able to build or install the relevant extension ".
"separately.";
}
if ($what == 'builtin-dll') {
$generic = false;
$problems[] =
"Your install of PHP does not have the '{$which}' extension enabled. ".
"Edit your php.ini file and uncomment the line which reads ".
"'extension={$which}'.";
}
if ($what == 'text') {
$generic = false;
$problems[] = $which;
}
if ($generic) {
$problems[] =
"This build of PHP is missing the required function '{$fname}()'. ".
"Rebuild PHP or install the extension which provides '{$fname}()'.";
}
}
if ($problems) {
if ($show_config) {
$problems[] = "PHP was built with this configure command:\n\n{$config}";
}
die_with_bad_php(implode("\n\n", $problems));
}
}
function die_with_bad_php($message) {
// NOTE: We're bailing because PHP is broken. We can't call any library
// functions because they won't be loaded yet.
echo "\n";
echo 'PHP CONFIGURATION ERRORS';
echo "\n\n";
echo $message;
echo "\n\n";
exit(1);
}
function arcanist_load_libraries(
$load,
$must_load,
$lib_source,
ArcanistWorkingCopyIdentity $working_copy) {
if (!$load) {
return;
}
if (!is_array($load)) {
$error = pht(
'Libraries specified by %s are invalid; expected a list. '.
'Check your configuration.',
$lib_source);
$console = PhutilConsole::getConsole();
$console->writeErr("%s: %s\n", pht('WARNING'), $error);
return;
}
foreach ($load as $location) {
// Try to resolve the library location. We look in several places, in
// order:
//
// 1. Inside the working copy. This is for phutil libraries within the
// project. For instance "library/src" will resolve to
// "./library/src" if it exists.
// 2. In the same directory as the working copy. This allows you to
// check out a library alongside a working copy and reference it.
// If we haven't resolved yet, "library/src" will try to resolve to
// "../library/src" if it exists.
// 3. Using normal libphutil resolution rules. Generally, this means
// that it checks for libraries next to libphutil, then libraries
// in the PHP include_path.
//
// Note that absolute paths will just resolve absolutely through rule (1).
$resolved = false;
// Check inside the working copy. This also checks absolute paths, since
// they'll resolve absolute and just ignore the project root.
$resolved_location = Filesystem::resolvePath(
$location,
$working_copy->getProjectRoot());
if (Filesystem::pathExists($resolved_location)) {
$location = $resolved_location;
$resolved = true;
}
// If we didn't find anything, check alongside the working copy.
if (!$resolved) {
$resolved_location = Filesystem::resolvePath(
$location,
dirname($working_copy->getProjectRoot()));
if (Filesystem::pathExists($resolved_location)) {
$location = $resolved_location;
$resolved = true;
}
}
$console = PhutilConsole::getConsole();
$console->writeLog(
"%s\n",
pht("Loading phutil library from '%s'...", $location));
$error = null;
try {
phutil_load_library($location);
} catch (PhutilBootloaderException $ex) {
$error = pht(
"Failed to load phutil library at location '%s'. This library ".
"is specified by %s. Check that the setting is correct and the ".
"library is located in the right place.",
$location,
$lib_source);
if ($must_load) {
throw new ArcanistUsageException($error);
} else {
fwrite(STDERR, phutil_console_wrap(
phutil_console_format("%s: %s\n",
pht('WARNING'),
$error)));
}
} catch (PhutilLibraryConflictException $ex) {
if ($ex->getLibrary() != 'arcanist') {
throw $ex;
}
// NOTE: If you are running `arc` against itself, we ignore the library
// conflict created by loading the local `arc` library (in the current
// working directory) and continue without loading it.
// This means we only execute code in the `arcanist/` directory which is
// associated with the binary you are running, whereas we would normally
// execute local code.
// This can make `arc` development slightly confusing if your setup is
// especially bizarre, but it allows `arc` to be used in automation
// workflows more easily. For some context, see PHI13.
$executing_directory = dirname(dirname(__FILE__));
$working_directory = dirname($location);
fwrite(
STDERR,
tsprintf(
"**<bg:yellow> %s </bg>** %s\n",
pht('VERY META'),
pht(
'You are running one copy of Arcanist (at path "%s") against '.
'another copy of Arcanist (at path "%s"). Code in the current '.
'working directory will not be loaded or executed.',
$executing_directory,
$working_directory)));
}
}
}

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