| /*** |
| This file is part of systemd. |
| |
| Copyright 2014 Lennart Poettering |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <getopt.h> |
| |
| #include "sd-event.h" |
| |
| #include "alloc-util.h" |
| #include "hostname-util.h" |
| #include "import-util.h" |
| #include "machine-image.h" |
| #include "parse-util.h" |
| #include "pull-raw.h" |
| #include "pull-tar.h" |
| #include "signal-util.h" |
| #include "string-util.h" |
| #include "verbs.h" |
| #include "web-util.h" |
| |
| static bool arg_force = false; |
| static const char *arg_image_root = "/var/lib/machines"; |
| static ImportVerify arg_verify = IMPORT_VERIFY_SIGNATURE; |
| static bool arg_settings = true; |
| |
| static int interrupt_signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { |
| log_notice("Transfer aborted."); |
| sd_event_exit(sd_event_source_get_event(s), EINTR); |
| return 0; |
| } |
| |
| static void on_tar_finished(TarPull *pull, int error, void *userdata) { |
| sd_event *event = userdata; |
| assert(pull); |
| |
| if (error == 0) |
| log_info("Operation completed successfully."); |
| |
| sd_event_exit(event, abs(error)); |
| } |
| |
| static int pull_tar(int argc, char *argv[], void *userdata) { |
| _cleanup_(tar_pull_unrefp) TarPull *pull = NULL; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| const char *url, *local; |
| _cleanup_free_ char *l = NULL, *ll = NULL; |
| int r; |
| |
| url = argv[1]; |
| if (!http_url_is_valid(url)) { |
| log_error("URL '%s' is not valid.", url); |
| return -EINVAL; |
| } |
| |
| if (argc >= 3) |
| local = argv[2]; |
| else { |
| r = import_url_last_component(url, &l); |
| if (r < 0) |
| return log_error_errno(r, "Failed get final component of URL: %m"); |
| |
| local = l; |
| } |
| |
| if (isempty(local) || streq(local, "-")) |
| local = NULL; |
| |
| if (local) { |
| r = tar_strip_suffixes(local, &ll); |
| if (r < 0) |
| return log_oom(); |
| |
| local = ll; |
| |
| if (!machine_name_is_valid(local)) { |
| log_error("Local image name '%s' is not valid.", local); |
| return -EINVAL; |
| } |
| |
| if (!arg_force) { |
| r = image_find(local, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); |
| else if (r > 0) { |
| log_error_errno(EEXIST, "Image '%s' already exists.", local); |
| return -EEXIST; |
| } |
| } |
| |
| log_info("Pulling '%s', saving as '%s'.", url, local); |
| } else |
| log_info("Pulling '%s'.", url); |
| |
| r = sd_event_default(&event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate event loop: %m"); |
| |
| assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
| (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); |
| (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); |
| |
| r = tar_pull_new(&pull, event, arg_image_root, on_tar_finished, event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate puller: %m"); |
| |
| r = tar_pull_start(pull, url, local, arg_force, arg_verify, arg_settings); |
| if (r < 0) |
| return log_error_errno(r, "Failed to pull image: %m"); |
| |
| r = sd_event_loop(event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to run event loop: %m"); |
| |
| log_info("Exiting."); |
| return -r; |
| } |
| |
| static void on_raw_finished(RawPull *pull, int error, void *userdata) { |
| sd_event *event = userdata; |
| assert(pull); |
| |
| if (error == 0) |
| log_info("Operation completed successfully."); |
| |
| sd_event_exit(event, abs(error)); |
| } |
| |
| static int pull_raw(int argc, char *argv[], void *userdata) { |
| _cleanup_(raw_pull_unrefp) RawPull *pull = NULL; |
| _cleanup_(sd_event_unrefp) sd_event *event = NULL; |
| const char *url, *local; |
| _cleanup_free_ char *l = NULL, *ll = NULL; |
| int r; |
| |
| url = argv[1]; |
| if (!http_url_is_valid(url)) { |
| log_error("URL '%s' is not valid.", url); |
| return -EINVAL; |
| } |
| |
| if (argc >= 3) |
| local = argv[2]; |
| else { |
| r = import_url_last_component(url, &l); |
| if (r < 0) |
| return log_error_errno(r, "Failed get final component of URL: %m"); |
| |
| local = l; |
| } |
| |
| if (isempty(local) || streq(local, "-")) |
| local = NULL; |
| |
| if (local) { |
| r = raw_strip_suffixes(local, &ll); |
| if (r < 0) |
| return log_oom(); |
| |
| local = ll; |
| |
| if (!machine_name_is_valid(local)) { |
| log_error("Local image name '%s' is not valid.", local); |
| return -EINVAL; |
| } |
| |
| if (!arg_force) { |
| r = image_find(local, NULL); |
| if (r < 0) |
| return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); |
| else if (r > 0) { |
| log_error_errno(EEXIST, "Image '%s' already exists.", local); |
| return -EEXIST; |
| } |
| } |
| |
| log_info("Pulling '%s', saving as '%s'.", url, local); |
| } else |
| log_info("Pulling '%s'.", url); |
| |
| r = sd_event_default(&event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate event loop: %m"); |
| |
| assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); |
| (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); |
| (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); |
| |
| r = raw_pull_new(&pull, event, arg_image_root, on_raw_finished, event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate puller: %m"); |
| |
| r = raw_pull_start(pull, url, local, arg_force, arg_verify, arg_settings); |
| if (r < 0) |
| return log_error_errno(r, "Failed to pull image: %m"); |
| |
| r = sd_event_loop(event); |
| if (r < 0) |
| return log_error_errno(r, "Failed to run event loop: %m"); |
| |
| log_info("Exiting."); |
| return -r; |
| } |
| |
| static int help(int argc, char *argv[], void *userdata) { |
| |
| printf("%s [OPTIONS...] {COMMAND} ...\n\n" |
| "Download container or virtual machine images.\n\n" |
| " -h --help Show this help\n" |
| " --version Show package version\n" |
| " --force Force creation of image\n" |
| " --verify=MODE Verify downloaded image, one of: 'no',\n" |
| " 'checksum', 'signature'\n" |
| " --settings=BOOL Download settings file with image\n" |
| " --image-root=PATH Image root directory\n\n" |
| "Commands:\n" |
| " tar URL [NAME] Download a TAR image\n" |
| " raw URL [NAME] Download a RAW image\n", |
| program_invocation_short_name); |
| |
| return 0; |
| } |
| |
| static int parse_argv(int argc, char *argv[]) { |
| |
| enum { |
| ARG_VERSION = 0x100, |
| ARG_FORCE, |
| ARG_IMAGE_ROOT, |
| ARG_VERIFY, |
| ARG_SETTINGS, |
| }; |
| |
| static const struct option options[] = { |
| { "help", no_argument, NULL, 'h' }, |
| { "version", no_argument, NULL, ARG_VERSION }, |
| { "force", no_argument, NULL, ARG_FORCE }, |
| { "image-root", required_argument, NULL, ARG_IMAGE_ROOT }, |
| { "verify", required_argument, NULL, ARG_VERIFY }, |
| { "settings", required_argument, NULL, ARG_SETTINGS }, |
| {} |
| }; |
| |
| int c, r; |
| |
| assert(argc >= 0); |
| assert(argv); |
| |
| while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
| |
| switch (c) { |
| |
| case 'h': |
| return help(0, NULL, NULL); |
| |
| case ARG_VERSION: |
| return version(); |
| |
| case ARG_FORCE: |
| arg_force = true; |
| break; |
| |
| case ARG_IMAGE_ROOT: |
| arg_image_root = optarg; |
| break; |
| |
| case ARG_VERIFY: |
| arg_verify = import_verify_from_string(optarg); |
| if (arg_verify < 0) { |
| log_error("Invalid verification setting '%s'", optarg); |
| return -EINVAL; |
| } |
| |
| break; |
| |
| case ARG_SETTINGS: |
| r = parse_boolean(optarg); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse --settings= parameter '%s'", optarg); |
| |
| arg_settings = r; |
| break; |
| |
| case '?': |
| return -EINVAL; |
| |
| default: |
| assert_not_reached("Unhandled option"); |
| } |
| |
| return 1; |
| } |
| |
| static int pull_main(int argc, char *argv[]) { |
| |
| static const Verb verbs[] = { |
| { "help", VERB_ANY, VERB_ANY, 0, help }, |
| { "tar", 2, 3, 0, pull_tar }, |
| { "raw", 2, 3, 0, pull_raw }, |
| {} |
| }; |
| |
| return dispatch_verb(argc, argv, verbs, NULL); |
| } |
| |
| int main(int argc, char *argv[]) { |
| int r; |
| |
| setlocale(LC_ALL, ""); |
| log_parse_environment(); |
| log_open(); |
| |
| r = parse_argv(argc, argv); |
| if (r <= 0) |
| goto finish; |
| |
| (void) ignore_signals(SIGPIPE, -1); |
| |
| r = pull_main(argc, argv); |
| |
| finish: |
| return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
| } |