Merge pull request #1096 from YunoHost/less-madness-for-hook-exec

Less madness for hook exec

src/yunohost/app.py

@@ -371,8 +371,6 @@ def app_change_url(operation_logger, app, domain, path):
     # Retrieve arguments list for change_url script
     # TODO: Allow to specify arguments
     args_odict = _parse_args_from_manifest(manifest, 'change_url')
-    args_list = [value[0] for value in args_odict.values()]
-    args_list.append(app)
 
     # Prepare env. var. to pass to script
     env_dict = _make_environment_for_app_script(app, args=args_odict)
@@ -404,7 +402,7 @@ def app_change_url(operation_logger, app, domain, path):
     os.system('chmod +x %s' % os.path.join(os.path.join(APP_TMP_FOLDER, "scripts", "change_url")))
 
     if hook_exec(os.path.join(APP_TMP_FOLDER, 'scripts/change_url'),
-                 args=args_list, env=env_dict)[0] != 0:
+                 env=env_dict)[0] != 0:
         msg = "Failed to change '%s' url." % app
         logger.error(msg)
         operation_logger.error(msg)
@@ -432,7 +430,7 @@ def app_change_url(operation_logger, app, domain, path):
     logger.success(m18n.n("app_change_url_success",
                           app=app, domain=domain, path=path))
 
-    hook_callback('post_app_change_url', args=args_list, env=env_dict)
+    hook_callback('post_app_change_url', env=env_dict)
 
 
 def app_upgrade(app=[], url=None, file=None, force=False):
@@ -530,8 +528,6 @@ def app_upgrade(app=[], url=None, file=None, force=False):
         # Retrieve arguments list for upgrade script
         # TODO: Allow to specify arguments
         args_odict = _parse_args_from_manifest(manifest, 'upgrade')
-        args_list = [value[0] for value in args_odict.values()]
-        args_list.append(app_instance_name)
 
         # Prepare env. var. to pass to script
         env_dict = _make_environment_for_app_script(app_instance_name, args=args_odict)
@@ -560,7 +556,7 @@ def app_upgrade(app=[], url=None, file=None, force=False):
         upgrade_failed = True
         try:
             upgrade_retcode = hook_exec(extracted_app_folder + '/scripts/upgrade',
-                                        args=args_list, env=env_dict)[0]
+                                        env=env_dict)[0]
 
             upgrade_failed = True if upgrade_retcode != 0 else False
             if upgrade_failed:
@@ -637,7 +633,7 @@ def app_upgrade(app=[], url=None, file=None, force=False):
             # So much win
             logger.success(m18n.n('app_upgraded', app=app_instance_name))
 
-            hook_callback('post_app_upgrade', args=args_list, env=env_dict)
+            hook_callback('post_app_upgrade', env=env_dict)
             operation_logger.success()
 
     permission_sync_to_user()
@@ -754,10 +750,6 @@ def app_install(operation_logger, app, label=None, args=None, no_remove_on_failu
     # Validate domain / path availability for webapps
     _validate_and_normalize_webpath(manifest, args_odict, extracted_app_folder)
 
-    # build arg list tq
-    args_list = [value[0] for value in args_odict.values()]
-    args_list.append(app_instance_name)
-
     # Attempt to patch legacy helpers ...
     _patch_legacy_helpers(extracted_app_folder)
 
@@ -830,7 +822,7 @@ def app_install(operation_logger, app, label=None, args=None, no_remove_on_failu
     try:
         install_retcode = hook_exec(
             os.path.join(extracted_app_folder, 'scripts/install'),
-            args=args_list, env=env_dict
+            env=env_dict
         )[0]
         # "Common" app install failure : the script failed and returned exit code != 0
         install_failed = True if install_retcode != 0 else False
@@ -946,7 +938,7 @@ def app_install(operation_logger, app, label=None, args=None, no_remove_on_failu
 
     logger.success(m18n.n('installation_complete'))
 
-    hook_callback('post_app_install', args=args_list, env=env_dict)
+    hook_callback('post_app_install', env=env_dict)
 
 
 def dump_app_log_extract_for_debugging(operation_logger):
@@ -1033,8 +1025,6 @@ def app_remove(operation_logger, app):
     os.system('chown -R admin: /tmp/yunohost_remove')
     os.system('chmod -R u+rX /tmp/yunohost_remove')
 
-    args_list = [app]
-
     env_dict = {}
     app_id, app_instance_nb = _parse_app_instance_name(app)
     env_dict["YNH_APP_ID"] = app_id
@@ -1046,7 +1036,6 @@ def app_remove(operation_logger, app):
 
     try:
         ret = hook_exec('/tmp/yunohost_remove/scripts/remove',
-                        args=args_list,
                         env=env_dict)[0]
     # Here again, calling hook_exec could fail miserably, or get
     # manually interrupted (by mistake or because script was stuck)
@@ -1059,7 +1048,7 @@ def app_remove(operation_logger, app):
 
     if ret == 0:
         logger.success(m18n.n('app_removed', app=app))
-        hook_callback('post_app_remove', args=args_list, env=env_dict)
+        hook_callback('post_app_remove', env=env_dict)
     else:
         logger.warning(m18n.n('app_not_properly_removed', app=app))
 
@@ -1470,7 +1459,6 @@ def app_action_run(operation_logger, app, action, args=None):
     # Retrieve arguments list for install script
     args_dict = dict(urllib.parse.parse_qsl(args, keep_blank_values=True)) if args else {}
     args_odict = _parse_args_for_action(actions[action], args=args_dict)
-    args_list = [value[0] for value in args_odict.values()]
 
     env_dict = _make_environment_for_app_script(app, args=args_odict, args_prefix="ACTION_")
     env_dict["YNH_ACTION"] = action
@@ -1489,7 +1477,6 @@ def app_action_run(operation_logger, app, action, args=None):
 
     retcode = hook_exec(
         path,
-        args=args_list,
         env=env_dict,
         chdir=cwd,
         user=action_declaration.get("user", "root"),
@@ -2775,7 +2762,7 @@ def _make_environment_for_app_script(app, args={}, args_prefix="APP_ARG_"):
     }
 
     for arg_name, arg_value_and_type in args.items():
-        env_dict["YNH_%s%s" % (args_prefix, arg_name.upper())] = arg_value_and_type[0]
+        env_dict["YNH_%s%s" % (args_prefix, arg_name.upper())] = str(arg_value_and_type[0])
 
     return env_dict
 
@@ -3139,6 +3126,33 @@ def _patch_legacy_helpers(app_folder):
             "pattern": r"(Automatic diagnosis data from YunoHost( *\n)*)? *(__\w+__)? *\$\(yunohost tools diagnosis.*\)(__\w+__)?",
             "replace": r"",
             "important": False
+        },
+        # Old $1, $2 in backup/restore scripts...
+        "app=$2": {
+            "only_for": ["scripts/backup", "scripts/restore"],
+            "pattern": r"app=\$2",
+            "replace": r"app=$YNH_APP_INSTANCE_NAME",
+            "important": True
+        },
+        # Old $1, $2 in backup/restore scripts...
+        "backup_dir=$1": {
+            "only_for": ["scripts/backup", "scripts/restore"],
+            "pattern": r"backup_dir=\$1",
+            "replace": r"backup_dir=.",
+            "important": True
+        },
+        # Old $1, $2 in backup/restore scripts...
+        "restore_dir=$1": {
+            "only_for": ["scripts/restore"],
+            "pattern": r"restore_dir=\$1",
+            "replace": r"restore_dir=.",
+            "important": True
+        },
+        # Old $1, $2 in install scripts...
+        # We ain't patching that shit because it ain't trivial to patch all args...
+        "domain=$1": {
+            "only_for": ["scripts/install"],
+            "important": True
         }
     }
 
@@ -3157,6 +3171,11 @@ def _patch_legacy_helpers(app_folder):
         show_warning = False
 
         for helper, infos in stuff_to_replace.items():
+
+            # Ignore if not relevant for this file
+            if infos.get("only_for") and not any(filename.endswith(f) for f in infos["only_for"]):
+                continue
+
             # If helper is used, attempt to patch the file
             if helper in content and infos["pattern"]:
                 content = infos["pattern"].sub(infos["replace"], content)
@@ -3164,11 +3183,11 @@ def _patch_legacy_helpers(app_folder):
                 if infos["important"]:
                     show_warning = True
 
-            # If the helpert is *still* in the content, it means that we
+            # If the helper is *still* in the content, it means that we
             # couldn't patch the deprecated helper in the previous lines.  In
             # that case, abort the install or whichever step is performed
             if helper in content and infos["important"]:
-                raise YunohostError("This app is likely pretty old and uses deprecated / outdated helpers that can't be migrated easily. It can't be installed anymore.")
+                raise YunohostError("This app is likely pretty old and uses deprecated / outdated helpers that can't be migrated easily. It can't be installed anymore.", raw_msg=True)
 
         if replaced_stuff:
 

src/yunohost/backup.py

@@ -686,8 +686,10 @@ class BackupManager():
             app_script = os.path.join(app_setting_path, 'scripts/backup')
             subprocess.call(['install', '-Dm555', app_script, tmp_script])
 
-            hook_exec(tmp_script, args=[tmp_app_bkp_dir, app],
+            hook_exec(tmp_script,
-                      raise_on_error=True, chdir=tmp_app_bkp_dir, env=env_dict)[0]
+                      raise_on_error=True,
+                      chdir=tmp_app_bkp_dir,
+                      env=env_dict)[0]
 
             self._import_to_list_to_backup(env_dict["YNH_BACKUP_CSV"])
 
@@ -1383,7 +1385,6 @@ class RestoreManager():
 
             # Execute app restore script
             hook_exec(restore_script,
-                      args=[app_backup_in_archive, app_instance_name],
                       chdir=app_backup_in_archive,
                       raise_on_error=True,
                       env=env_dict)[0]
@@ -1408,7 +1409,7 @@ class RestoreManager():
             operation_logger.start()
 
             # Execute remove script
-            if hook_exec(remove_script, args=[app_instance_name],
+            if hook_exec(remove_script,
                          env=env_dict_remove)[0] != 0:
                 msg = m18n.n('app_not_properly_removed', app=app_instance_name)
                 logger.warning(msg)

src/yunohost/hook.py

@@ -212,7 +212,7 @@ def hook_list(action, list_by='name', show_info=False):
     return {'hooks': result}
 
 
-def hook_callback(action, hooks=[], args=None, no_trace=False, chdir=None,
+def hook_callback(action, hooks=[], args=None, chdir=None,
                   env=None, pre_callback=None, post_callback=None):
     """
     Execute all scripts binded to an action
@@ -221,7 +221,6 @@ def hook_callback(action, hooks=[], args=None, no_trace=False, chdir=None,
         action -- Action name
         hooks -- List of hooks names to execute
         args -- Ordered list of arguments to pass to the scripts
-        no_trace -- Do not print each command that will be executed
         chdir -- The directory from where the scripts will be executed
         env -- Dictionnary of environment variables to export
         pre_callback -- An object to call before each script execution with
@@ -282,7 +281,7 @@ def hook_callback(action, hooks=[], args=None, no_trace=False, chdir=None,
                 hook_args = pre_callback(name=name, priority=priority,
                                          path=path, args=args)
                 hook_return = hook_exec(path, args=hook_args, chdir=chdir, env=env,
-                                        no_trace=no_trace, raise_on_error=True)[1]
+                                        raise_on_error=True)[1]
             except YunohostError as e:
                 state = 'failed'
                 hook_return = {}
@@ -298,8 +297,8 @@ def hook_callback(action, hooks=[], args=None, no_trace=False, chdir=None,
     return result
 
 
-def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
+def hook_exec(path, args=None, raise_on_error=False,
-              chdir=None, env=None, user="root", return_format="json"):
+              chdir=None, env=None, return_format="json"):
     """
     Execute hook from a file with arguments
 
@@ -307,11 +306,8 @@ def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
         path -- Path of the script to execute
         args -- Ordered list of arguments to pass to the script
         raise_on_error -- Raise if the script returns a non-zero exit code
-        no_trace -- Do not print each command that will be executed
         chdir -- The directory from where the script will be executed
         env -- Dictionnary of environment variables to export
-        user -- User with which to run the command
-
     """
 
     # Validate hook path
@@ -350,7 +346,7 @@ def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
     if hook_type == 'text/x-python':
         returncode, returndata = _hook_exec_python(path, args, env, loggers)
     else:
-        returncode, returndata = _hook_exec_bash(path, args, no_trace, chdir, env, user, return_format, loggers)
+        returncode, returndata = _hook_exec_bash(path, args, chdir, env, return_format, loggers)
 
     # Check and return process' return code
     if returncode is None:
@@ -365,7 +361,7 @@ def hook_exec(path, args=None, raise_on_error=False, no_trace=False,
     return returncode, returndata
 
 
-def _hook_exec_bash(path, args, no_trace, chdir, env, user, return_format, loggers):
+def _hook_exec_bash(path, args, chdir, env, return_format, loggers):
 
     from moulinette.utils.process import call_async_output
 
@@ -393,27 +389,20 @@ def _hook_exec_bash(path, args, no_trace, chdir, env, user, return_format, logge
         f.write('')
     env['YNH_STDRETURN'] = stdreturn
 
-    # Construct command to execute
+    # use xtrace on fd 7 which is redirected to stdout
-    if user == "root":
+    env['BASH_XTRACEFD'] = "7"
-        command = ['sh', '-c']
+    cmd = '/bin/bash -x "{script}" {args} 7>&1'
-    else:
+    cmd = cmd.format(script=cmd_script, args=cmd_args)
-        command = ['sudo', '-n', '-u', user, '-H', 'sh', '-c']
 
-    if no_trace:
+    logger.debug("Executing command '%s'" % cmd)
-        cmd = '/bin/bash "{script}" {args}'
-    else:
-        # use xtrace on fd 7 which is redirected to stdout
-        cmd = 'BASH_XTRACEFD=7 /bin/bash -x "{script}" {args} 7>&1'
 
-    # prepend environment variables
+    _env = os.environ.copy()
-    cmd = '{0} {1}'.format(
+    _env.update(env)
-        ' '.join(['{0}={1}'.format(k, shell_quote(v))
-                  for k, v in env.items()]), cmd)
-    command.append(cmd.format(script=cmd_script, args=cmd_args))
 
-    logger.debug("Executing command '%s'" % ' '.join(command))
+    returncode = call_async_output(
-
+        cmd, loggers, shell=False, cwd=chdir,
-    returncode = call_async_output(command, loggers, shell=False, cwd=chdir)
+        env=_env
+    )
 
     raw_content = None
     try:

src/yunohost/tests/conftest.py

@@ -3,7 +3,7 @@ import pytest
 import sys
 
 import moulinette
-from moulinette import m18n
+from moulinette import m18n, msettings
 from yunohost.utils.error import YunohostError
 from contextlib import contextmanager
 sys.path.append("..")
@@ -78,3 +78,4 @@ def pytest_cmdline_main(config):
     sys.path.insert(0, "/usr/lib/moulinette/")
     import yunohost
     yunohost.init(debug=config.option.yunodebug)
+    msettings["interface"] = "test"

src/yunohost/user.py

@@ -219,12 +219,20 @@ def user_create(operation_logger, username, firstname, lastname, domain, passwor
     user_group_create(groupname=username, gid=uid, primary_group=True, sync_perm=False)
     user_group_update(groupname='all_users', add=username, force=True, sync_perm=True)
 
+    # Trigger post_user_create hooks
+    env_dict = {
+        "YNH_USER_USERNAME": username,
+        "YNH_USER_MAIL": mail,
+        "YNH_USER_PASSWORD": password,
+        "YNH_USER_FIRSTNAME": firstname,
+        "YNH_USER_LASTNAME": lastname
+    }
+
+    hook_callback('post_user_create', args=[username, mail], env=env_dict)
+
     # TODO: Send a welcome mail to user
     logger.success(m18n.n('user_created'))
 
-    hook_callback('post_user_create',
-                  args=[username, mail, password, firstname, lastname])
-
     return {'fullname': fullname, 'username': username, 'mail': mail}
 
 
@@ -302,6 +310,7 @@ def user_update(operation_logger, username, firstname=None, lastname=None, mail=
     from yunohost.app import app_ssowatconf
     from yunohost.utils.password import assert_password_is_strong_enough
     from yunohost.utils.ldap import _get_ldap_interface
+    from yunohost.hook import hook_callback
 
     domains = domain_list()['domains']
 
@@ -312,16 +321,21 @@ def user_update(operation_logger, username, firstname=None, lastname=None, mail=
     if not result:
         raise YunohostError('user_unknown', user=username)
     user = result[0]
+    env_dict = {
+        "YNH_USER_USERNAME": username
+    }
 
     # Get modifications from arguments
     new_attr_dict = {}
     if firstname:
         new_attr_dict['givenName'] = [firstname]  # TODO: Validate
         new_attr_dict['cn'] = new_attr_dict['displayName'] = [firstname + ' ' + user['sn'][0]]
+        env_dict["YNH_USER_FIRSTNAME"] = firstname
 
     if lastname:
         new_attr_dict['sn'] = [lastname]  # TODO: Validate
         new_attr_dict['cn'] = new_attr_dict['displayName'] = [user['givenName'][0] + ' ' + lastname]
+        env_dict["YNH_USER_LASTNAME"] = lastname
 
     if lastname and firstname:
         new_attr_dict['cn'] = new_attr_dict['displayName'] = [firstname + ' ' + lastname]
@@ -337,6 +351,7 @@ def user_update(operation_logger, username, firstname=None, lastname=None, mail=
         assert_password_is_strong_enough("user", change_password)
 
         new_attr_dict['userPassword'] = [_hash_user_password(change_password)]
+        env_dict["YNH_USER_PASSWORD"] = change_password
 
     if mail:
         main_domain = _get_maindomain()
@@ -381,6 +396,9 @@ def user_update(operation_logger, username, firstname=None, lastname=None, mail=
                 raise YunohostError('mail_alias_remove_failed', mail=mail)
         new_attr_dict['mail'] = user['mail']
 
+    if 'mail' in new_attr_dict:
+        env_dict["YNH_USER_MAILS"] = ','.join(new_attr_dict['mail'])
+
     if add_mailforward:
         if not isinstance(add_mailforward, list):
             add_mailforward = [add_mailforward]
@@ -400,8 +418,12 @@ def user_update(operation_logger, username, firstname=None, lastname=None, mail=
                 raise YunohostError('mail_forward_remove_failed', mail=mail)
         new_attr_dict['maildrop'] = user['maildrop']
 
+    if 'maildrop' in new_attr_dict:
+        env_dict["YNH_USER_MAILFORWARDS"] = ','.join(new_attr_dict['maildrop'])
+
     if mailbox_quota is not None:
         new_attr_dict['mailuserquota'] = [mailbox_quota]
+        env_dict["YNH_USER_MAILQUOTA"] = mailbox_quota
 
     operation_logger.start()
 
@@ -410,6 +432,9 @@ def user_update(operation_logger, username, firstname=None, lastname=None, mail=
     except Exception as e:
         raise YunohostError('user_update_failed', user=username, error=e)
 
+    # Trigger post_user_update hooks
+    hook_callback('post_user_update', env=env_dict)
+
     logger.success(m18n.n('user_updated'))
     app_ssowatconf()
     return user_info(username)