| Christopher Wiley | 5ccc829 | 2015-05-28 10:01:22 -0700 | [diff] [blame^] | 1 | # Copyright 2015 The Chromium OS Authors. All rights reserved. |
| 2 | # Use of this source code is governed by a BSD-style license that can be |
| 3 | # found in the LICENSE file. |
| 4 | |
| 5 | """This script installs users and groups into sysroots.""" |
| 6 | |
| 7 | from __future__ import print_function |
| 8 | |
| 9 | import os |
| 10 | |
| 11 | from chromite.lib import accounts_lib |
| 12 | from chromite.lib import commandline |
| 13 | from chromite.lib import cros_build_lib |
| 14 | from chromite.lib import osutils |
| 15 | from chromite.lib import sysroot_lib |
| 16 | from chromite.lib import user_db |
| 17 | |
| 18 | |
| 19 | ACCOUNT_DB_FILENAME = 'accounts.json' |
| 20 | |
| 21 | ACTION_GET_ENTRY = 'get_entry' |
| 22 | ACTION_INSTALL_USER = 'install_user' |
| 23 | ACTION_INSTALL_GROUP = 'install_group' |
| 24 | |
| 25 | USER_DB = 'passwd' |
| 26 | GROUP_DB = 'group' |
| 27 | |
| 28 | |
| 29 | def GetOptions(argv): |
| 30 | """Returns the parsed command line arguments in |argv|.""" |
| 31 | parser = commandline.ArgumentParser(description=__doc__) |
| 32 | command_parsers = parser.add_subparsers(dest='action') |
| 33 | |
| 34 | get_ent_parser = command_parsers.add_parser( |
| 35 | ACTION_GET_ENTRY, help='Get an entry from an account database.') |
| 36 | get_ent_parser.add_argument( |
| 37 | '--nolock', action='store_true', default=False, |
| 38 | help='Skip locking the database before reading it.') |
| 39 | get_ent_parser.add_argument('sysroot', type='path', |
| 40 | help='Path to sysroot containing the database') |
| 41 | get_ent_parser.add_argument('database', choices=(USER_DB, GROUP_DB), |
| 42 | help='Name of database to get') |
| 43 | get_ent_parser.add_argument('name', type=str, help='Name of account to get') |
| 44 | |
| 45 | user_parser = command_parsers.add_parser( |
| 46 | ACTION_INSTALL_USER, help='Install a user to a sysroot') |
| 47 | user_parser.add_argument('name', type=str, |
| 48 | help='Name of user to install') |
| 49 | user_parser.add_argument('--uid', type=int, |
| 50 | help='UID of the user') |
| 51 | user_parser.add_argument('--shell', type='path', |
| 52 | help='Shell of user') |
| 53 | user_parser.add_argument('--home', type='path', |
| 54 | help='Home directory of user') |
| 55 | user_parser.add_argument('--primary_group', type=str, |
| 56 | help='Name of primary group for user') |
| 57 | |
| 58 | group_parser = command_parsers.add_parser( |
| 59 | ACTION_INSTALL_GROUP, help='Install a group to a sysroot') |
| 60 | group_parser.add_argument('name', type=str, |
| 61 | help='Name of group to install.') |
| 62 | group_parser.add_argument('--gid', type=int, help='GID of the group') |
| 63 | |
| 64 | # Both group and user parsers need to understand the target sysroot. |
| 65 | for sub_parser in (user_parser, group_parser): |
| 66 | sub_parser.add_argument( |
| 67 | 'sysroot', type='path', help='The sysroot to install the user into') |
| 68 | |
| 69 | options = parser.parse_args(argv) |
| 70 | options.Freeze() |
| 71 | return options |
| 72 | |
| 73 | |
| 74 | def main(argv): |
| 75 | cros_build_lib.AssertInsideChroot() |
| 76 | options = GetOptions(argv) |
| 77 | |
| 78 | if options.action == ACTION_GET_ENTRY: |
| 79 | db = user_db.UserDB(options.sysroot) |
| 80 | if options.database == USER_DB: |
| 81 | print(db.GetUserEntry(options.name, skip_lock=options.nolock)) |
| 82 | else: |
| 83 | print(db.GetGroupEntry(options.name, skip_lock=options.nolock)) |
| 84 | return 0 |
| 85 | |
| 86 | overlays = sysroot_lib.Sysroot(options.sysroot).GetStandardField( |
| 87 | sysroot_lib.STANDARD_FIELD_PORTDIR_OVERLAY).split() |
| 88 | |
| 89 | # TODO(wiley) This process could be optimized to avoid reparsing these |
| 90 | # overlay databases each time. |
| 91 | account_db = accounts_lib.AccountDatabase() |
| 92 | for overlay_path in overlays: |
| 93 | database_path = os.path.join(overlay_path, ACCOUNT_DB_FILENAME) |
| 94 | if os.path.exists(database_path): |
| 95 | account_db.AddAccountsFromDatabase(database_path) |
| 96 | |
| 97 | installed_users = user_db.UserDB(options.sysroot) |
| 98 | |
| 99 | if options.action == ACTION_INSTALL_USER: |
| 100 | account_db.InstallUser(options.name, installed_users, |
| 101 | uid=options.uid, shell=options.shell, |
| 102 | homedir=options.home, |
| 103 | primary_group=options.primary_group) |
| 104 | |
| 105 | homedir = account_db.users[options.name].home |
| 106 | homedir_path = os.path.join(options.sysroot, homedir) |
| 107 | |
| 108 | if homedir != '/dev/null' and not os.path.exists(homedir_path): |
| 109 | osutils.SafeMakedirs(homedir_path, sudo=True) |
| 110 | uid = account_db.users[options.name].uid |
| 111 | cros_build_lib.SudoRunCommand( |
| 112 | ['chown', '%d:%d' % (uid, uid), homedir_path], print_cmd=False) |
| 113 | |
| 114 | elif options.action == ACTION_INSTALL_GROUP: |
| 115 | account_db.InstallGroup(options.name, installed_users, gid=options.gid) |
| 116 | else: |
| 117 | cros_build_lib.Die('Unsupported account type: %s' % options.account_type) |