/* SPDX-License-Identifier: LGPL-2.1+ */ #include #include #include "sd-event.h" #include "sd-id128.h" #include "alloc-util.h" #include "hostname-util.h" #include "import-util.h" #include "machine-image.h" #include "main-func.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 bool arg_roothash = 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; } local = empty_or_dash_to_null(local); 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(IMAGE_MACHINE, local, NULL); if (r < 0) { if (r != -ENOENT) return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); } else { log_error("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; } local = empty_or_dash_to_null(local); 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(IMAGE_MACHINE, local, NULL); if (r < 0) { if (r != -ENOENT) return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); } else { log_error("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, arg_roothash); 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" " --roothash=BOOL Download root hash 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, ARG_ROOTHASH, }; 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 }, { "roothash", required_argument, NULL, ARG_ROOTHASH }, {} }; 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) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid verification setting '%s'", optarg); break; case ARG_SETTINGS: r = parse_boolean(optarg); if (r < 0) return log_error_errno(r, "Failed to parse --settings= parameter '%s': %m", optarg); arg_settings = r; break; case ARG_ROOTHASH: r = parse_boolean(optarg); if (r < 0) return log_error_errno(r, "Failed to parse --roothash= parameter '%s': %m", optarg); arg_roothash = 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); } static int run(int argc, char *argv[]) { int r; setlocale(LC_ALL, ""); log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) return r; (void) ignore_signals(SIGPIPE, -1); return pull_main(argc, argv); } DEFINE_MAIN_FUNCTION(run);