Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 333 insertions, 0 deletions

diff --git a/src/import/pull.c b/src/import/pull.c
new file mode 100644
index 0000000..3376992
--- /dev/null
+++ b/src/import/pull.c
@@ -0,0 +1,333 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include <getopt.h>
+
+#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;
+        }
+
+        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(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;
+        }
+
+        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(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);