1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2014 Lennart Poettering
13 #include "alloc-util.h"
14 #include "hostname-util.h"
15 #include "import-util.h"
16 #include "machine-image.h"
17 #include "parse-util.h"
20 #include "signal-util.h"
21 #include "string-util.h"
25 static bool arg_force
= false;
26 static const char *arg_image_root
= "/var/lib/machines";
27 static ImportVerify arg_verify
= IMPORT_VERIFY_SIGNATURE
;
28 static bool arg_settings
= true;
29 static bool arg_roothash
= true;
31 static int interrupt_signal_handler(sd_event_source
*s
, const struct signalfd_siginfo
*si
, void *userdata
) {
32 log_notice("Transfer aborted.");
33 sd_event_exit(sd_event_source_get_event(s
), EINTR
);
37 static void on_tar_finished(TarPull
*pull
, int error
, void *userdata
) {
38 sd_event
*event
= userdata
;
42 log_info("Operation completed successfully.");
44 sd_event_exit(event
, abs(error
));
47 static int pull_tar(int argc
, char *argv
[], void *userdata
) {
48 _cleanup_(tar_pull_unrefp
) TarPull
*pull
= NULL
;
49 _cleanup_(sd_event_unrefp
) sd_event
*event
= NULL
;
50 const char *url
, *local
;
51 _cleanup_free_
char *l
= NULL
, *ll
= NULL
;
55 if (!http_url_is_valid(url
)) {
56 log_error("URL '%s' is not valid.", url
);
63 r
= import_url_last_component(url
, &l
);
65 return log_error_errno(r
, "Failed get final component of URL: %m");
70 if (isempty(local
) || streq(local
, "-"))
74 r
= tar_strip_suffixes(local
, &ll
);
80 if (!machine_name_is_valid(local
)) {
81 log_error("Local image name '%s' is not valid.", local
);
86 r
= image_find(local
, NULL
);
88 return log_error_errno(r
, "Failed to check whether image '%s' exists: %m", local
);
90 log_error("Image '%s' already exists.", local
);
95 log_info("Pulling '%s', saving as '%s'.", url
, local
);
97 log_info("Pulling '%s'.", url
);
99 r
= sd_event_default(&event
);
101 return log_error_errno(r
, "Failed to allocate event loop: %m");
103 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGTERM
, SIGINT
, -1) >= 0);
104 (void) sd_event_add_signal(event
, NULL
, SIGTERM
, interrupt_signal_handler
, NULL
);
105 (void) sd_event_add_signal(event
, NULL
, SIGINT
, interrupt_signal_handler
, NULL
);
107 r
= tar_pull_new(&pull
, event
, arg_image_root
, on_tar_finished
, event
);
109 return log_error_errno(r
, "Failed to allocate puller: %m");
111 r
= tar_pull_start(pull
, url
, local
, arg_force
, arg_verify
, arg_settings
);
113 return log_error_errno(r
, "Failed to pull image: %m");
115 r
= sd_event_loop(event
);
117 return log_error_errno(r
, "Failed to run event loop: %m");
119 log_info("Exiting.");
123 static void on_raw_finished(RawPull
*pull
, int error
, void *userdata
) {
124 sd_event
*event
= userdata
;
128 log_info("Operation completed successfully.");
130 sd_event_exit(event
, abs(error
));
133 static int pull_raw(int argc
, char *argv
[], void *userdata
) {
134 _cleanup_(raw_pull_unrefp
) RawPull
*pull
= NULL
;
135 _cleanup_(sd_event_unrefp
) sd_event
*event
= NULL
;
136 const char *url
, *local
;
137 _cleanup_free_
char *l
= NULL
, *ll
= NULL
;
141 if (!http_url_is_valid(url
)) {
142 log_error("URL '%s' is not valid.", url
);
149 r
= import_url_last_component(url
, &l
);
151 return log_error_errno(r
, "Failed get final component of URL: %m");
156 if (isempty(local
) || streq(local
, "-"))
160 r
= raw_strip_suffixes(local
, &ll
);
166 if (!machine_name_is_valid(local
)) {
167 log_error("Local image name '%s' is not valid.", local
);
172 r
= image_find(local
, NULL
);
174 return log_error_errno(r
, "Failed to check whether image '%s' exists: %m", local
);
176 log_error("Image '%s' already exists.", local
);
181 log_info("Pulling '%s', saving as '%s'.", url
, local
);
183 log_info("Pulling '%s'.", url
);
185 r
= sd_event_default(&event
);
187 return log_error_errno(r
, "Failed to allocate event loop: %m");
189 assert_se(sigprocmask_many(SIG_BLOCK
, NULL
, SIGTERM
, SIGINT
, -1) >= 0);
190 (void) sd_event_add_signal(event
, NULL
, SIGTERM
, interrupt_signal_handler
, NULL
);
191 (void) sd_event_add_signal(event
, NULL
, SIGINT
, interrupt_signal_handler
, NULL
);
193 r
= raw_pull_new(&pull
, event
, arg_image_root
, on_raw_finished
, event
);
195 return log_error_errno(r
, "Failed to allocate puller: %m");
197 r
= raw_pull_start(pull
, url
, local
, arg_force
, arg_verify
, arg_settings
, arg_roothash
);
199 return log_error_errno(r
, "Failed to pull image: %m");
201 r
= sd_event_loop(event
);
203 return log_error_errno(r
, "Failed to run event loop: %m");
205 log_info("Exiting.");
209 static int help(int argc
, char *argv
[], void *userdata
) {
211 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
212 "Download container or virtual machine images.\n\n"
213 " -h --help Show this help\n"
214 " --version Show package version\n"
215 " --force Force creation of image\n"
216 " --verify=MODE Verify downloaded image, one of: 'no',\n"
217 " 'checksum', 'signature'\n"
218 " --settings=BOOL Download settings file with image\n"
219 " --roothash=BOOL Download root hash file with image\n"
220 " --image-root=PATH Image root directory\n\n"
222 " tar URL [NAME] Download a TAR image\n"
223 " raw URL [NAME] Download a RAW image\n",
224 program_invocation_short_name
);
229 static int parse_argv(int argc
, char *argv
[]) {
240 static const struct option options
[] = {
241 { "help", no_argument
, NULL
, 'h' },
242 { "version", no_argument
, NULL
, ARG_VERSION
},
243 { "force", no_argument
, NULL
, ARG_FORCE
},
244 { "image-root", required_argument
, NULL
, ARG_IMAGE_ROOT
},
245 { "verify", required_argument
, NULL
, ARG_VERIFY
},
246 { "settings", required_argument
, NULL
, ARG_SETTINGS
},
247 { "roothash", required_argument
, NULL
, ARG_ROOTHASH
},
256 while ((c
= getopt_long(argc
, argv
, "h", options
, NULL
)) >= 0)
261 return help(0, NULL
, NULL
);
271 arg_image_root
= optarg
;
275 arg_verify
= import_verify_from_string(optarg
);
276 if (arg_verify
< 0) {
277 log_error("Invalid verification setting '%s'", optarg
);
284 r
= parse_boolean(optarg
);
286 return log_error_errno(r
, "Failed to parse --settings= parameter '%s'", optarg
);
292 r
= parse_boolean(optarg
);
294 return log_error_errno(r
, "Failed to parse --roothash= parameter '%s'", optarg
);
303 assert_not_reached("Unhandled option");
309 static int pull_main(int argc
, char *argv
[]) {
311 static const Verb verbs
[] = {
312 { "help", VERB_ANY
, VERB_ANY
, 0, help
},
313 { "tar", 2, 3, 0, pull_tar
},
314 { "raw", 2, 3, 0, pull_raw
},
318 return dispatch_verb(argc
, argv
, verbs
, NULL
);
321 int main(int argc
, char *argv
[]) {
324 setlocale(LC_ALL
, "");
325 log_parse_environment();
328 r
= parse_argv(argc
, argv
);
332 (void) ignore_signals(SIGPIPE
, -1);
334 r
= pull_main(argc
, argv
);
337 return r
< 0 ? EXIT_FAILURE
: EXIT_SUCCESS
;