-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#include <sys/prctl.h>
-#include "util.h"
-#include "strv.h"
-#include "copy.h"
-#include "rm-rf.h"
+#include "alloc-util.h"
#include "btrfs-util.h"
-#include "capability.h"
-#include "pull-job.h"
-#include "pull-common.h"
+#include "capability-util.h"
+#include "copy.h"
+#include "dirent-util.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "io-util.h"
+#include "path-util.h"
#include "process-util.h"
+#include "pull-common.h"
+#include "pull-job.h"
+#include "rm-rf.h"
#include "signal-util.h"
+#include "siphash24.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
+#include "web-util.h"
#define FILENAME_ESCAPE "/.#\"\'"
+#define HASH_URL_THRESHOLD_LENGTH (_POSIX_PATH_MAX - 16)
+
+int pull_find_old_etags(
+ const char *url,
+ const char *image_root,
+ int dt,
+ const char *prefix,
+ const char *suffix,
+ char ***etags) {
-int pull_find_old_etags(const char *url, const char *image_root, int dt, const char *prefix, const char *suffix, char ***etags) {
_cleanup_free_ char *escaped_url = NULL;
_cleanup_closedir_ DIR *d = NULL;
_cleanup_strv_free_ char **l = NULL;
if (force_local)
(void) rm_rf(p, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME);
- r = btrfs_subvol_snapshot(final, p, 0);
+ r = btrfs_subvol_snapshot(final, p, BTRFS_SNAPSHOT_QUOTA);
if (r == -ENOTTY) {
r = copy_tree(final, p, false);
if (r < 0)
return 0;
}
+static int hash_url(const char *url, char **ret) {
+ uint64_t h;
+ static const sd_id128_t k = SD_ID128_ARRAY(df,89,16,87,01,cc,42,30,98,ab,4a,19,a6,a5,63,4f);
+
+ assert(url);
+
+ h = siphash24(url, strlen(url), k.bytes);
+ if (asprintf(ret, "%"PRIx64, h) < 0)
+ return -ENOMEM;
+
+ return 0;
+}
+
int pull_make_path(const char *url, const char *etag, const char *image_root, const char *prefix, const char *suffix, char **ret) {
- _cleanup_free_ char *escaped_url = NULL;
+ _cleanup_free_ char *escaped_url = NULL, *escaped_etag = NULL;
char *path;
assert(url);
return -ENOMEM;
if (etag) {
- _cleanup_free_ char *escaped_etag = NULL;
-
escaped_etag = xescape(etag, FILENAME_ESCAPE);
if (!escaped_etag)
return -ENOMEM;
+ }
- path = strjoin(image_root, "/", strempty(prefix), escaped_url, ".", escaped_etag, strempty(suffix), NULL);
- } else
- path = strjoin(image_root, "/", strempty(prefix), escaped_url, strempty(suffix), NULL);
+ path = strjoin(image_root, "/", strempty(prefix), escaped_url, escaped_etag ? "." : "",
+ strempty(escaped_etag), strempty(suffix), NULL);
if (!path)
return -ENOMEM;
+ /* URLs might make the path longer than the maximum allowed length for a file name.
+ * When that happens, a URL hash is used instead. Paths returned by this function
+ * can be later used with tempfn_random() which adds 16 bytes to the resulting name. */
+ if (strlen(path) >= HASH_URL_THRESHOLD_LENGTH) {
+ _cleanup_free_ char *hash = NULL;
+ int r;
+
+ free(path);
+
+ r = hash_url(url, &hash);
+ if (r < 0)
+ return r;
+
+ path = strjoin(image_root, "/", strempty(prefix), hash, escaped_etag ? "." : "",
+ strempty(escaped_etag), strempty(suffix), NULL);
+ if (!path)
+ return -ENOMEM;
+ }
+
*ret = path;
return 0;
}
+int pull_make_settings_job(
+ PullJob **ret,
+ const char *url,
+ CurlGlue *glue,
+ PullJobFinished on_finished,
+ void *userdata) {
+
+ _cleanup_free_ char *last_component = NULL, *ll = NULL, *settings_url = NULL;
+ _cleanup_(pull_job_unrefp) PullJob *job = NULL;
+ const char *q;
+ int r;
+
+ assert(ret);
+ assert(url);
+ assert(glue);
+
+ r = import_url_last_component(url, &last_component);
+ if (r < 0)
+ return r;
+
+ r = tar_strip_suffixes(last_component, &ll);
+ if (r < 0)
+ return r;
+
+ q = strjoina(ll, ".nspawn");
+
+ r = import_url_change_last_component(url, q, &settings_url);
+ if (r < 0)
+ return r;
+
+ r = pull_job_new(&job, settings_url, glue, userdata);
+ if (r < 0)
+ return r;
+
+ job->on_finished = on_finished;
+ job->compressed_max = job->uncompressed_max = 1ULL * 1024ULL * 1024ULL;
+
+ *ret = job;
+ job = NULL;
+
+ return 0;
+}
+
int pull_make_verification_jobs(
PullJob **ret_checksum_job,
PullJob **ret_signature_job,
return 0;
}
-int pull_verify(
- PullJob *main_job,
+int pull_verify(PullJob *main_job,
+ PullJob *settings_job,
PullJob *checksum_job,
PullJob *signature_job) {
strlen(line));
if (!p || (p != (char*) checksum_job->payload && p[-1] != '\n')) {
- log_error("Checksum did not check out, payload has been tempered with.");
+ log_error("DOWNLOAD INVALID: Checksum did not check out, payload has been tampered with.");
return -EBADMSG;
}
log_info("SHA256 checksum of %s is valid.", main_job->url);
+ assert(!settings_job || IN_SET(settings_job->state, PULL_JOB_DONE, PULL_JOB_FAILED));
+
+ if (settings_job &&
+ settings_job->state == PULL_JOB_DONE &&
+ settings_job->error == 0 &&
+ !settings_job->etag_exists) {
+
+ _cleanup_free_ char *settings_fn = NULL;
+
+ assert(settings_job->calc_checksum);
+ assert(settings_job->checksum);
+
+ r = import_url_last_component(settings_job->url, &settings_fn);
+ if (r < 0)
+ return log_oom();
+
+ if (!filename_is_valid(settings_fn)) {
+ log_error("Cannot verify checksum, could not determine server-side settings file name.");
+ return -EBADMSG;
+ }
+
+ line = strjoina(settings_job->checksum, " *", settings_fn, "\n");
+
+ p = memmem(checksum_job->payload,
+ checksum_job->payload_size,
+ line,
+ strlen(line));
+
+ if (!p || (p != (char*) checksum_job->payload && p[-1] != '\n')) {
+ log_error("DOWNLOAD INVALID: Checksum of settings file did not checkout, settings file has been tampered with.");
+ return -EBADMSG;
+ }
+
+ log_info("SHA256 checksum of %s is valid.", settings_job->url);
+ }
+
if (!signature_job)
return 0;
/* Child */
- reset_all_signal_handlers();
- reset_signal_mask();
+ (void) reset_all_signal_handlers();
+ (void) reset_signal_mask();
assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
gpg_pipe[1] = safe_close(gpg_pipe[1]);
if (r < 0)
goto finish;
if (r > 0) {
- log_error("Signature verification failed.");
+ log_error("DOWNLOAD INVALID: Signature verification failed.");
r = -EBADMSG;
} else {
log_info("Signature verification succeeded.");
finish:
if (sig_file >= 0)
- unlink(sig_file_path);
+ (void) unlink(sig_file_path);
if (gpg_home_created)
(void) rm_rf(gpg_home, REMOVE_ROOT|REMOVE_PHYSICAL);
projects / thirdparty / systemd.git / blobdiff