#include <sys/xattr.h>
#include <linux/fs.h>
#include <curl/curl.h>
+#include <gcrypt.h>
#include "utf8.h"
#include "strv.h"
char *image_root;
ImportJob *raw_job;
+ ImportJob *sha256sums_job;
RawImportFinished on_finished;
void *userdata;
if (!i->local)
return 0;
- if (i->raw_job->disk_fd >= 0) {
- if (lseek(i->raw_job->disk_fd, SEEK_SET, 0) == (off_t) -1)
- return log_error_errno(errno, "Failed to seek to beginning of vendor image: %m");
- } else {
+ if (i->raw_job->etag_exists) {
+ /* We have downloaded this one previously, reopen it */
+
+ assert(i->raw_job->disk_fd < 0);
+
if (!i->final_path) {
r = import_make_path(i->raw_job->url, i->raw_job->etag, i->image_root, ".raw-", ".raw", &i->final_path);
if (r < 0)
i->raw_job->disk_fd = open(i->final_path, O_RDONLY|O_NOCTTY|O_CLOEXEC);
if (i->raw_job->disk_fd < 0)
return log_error_errno(errno, "Failed to open vendor image: %m");
+ } else {
+ /* We freshly downloaded the image, use it */
+
+ assert(i->raw_job->disk_fd >= 0);
+
+ if (lseek(i->raw_job->disk_fd, SEEK_SET, 0) == (off_t) -1)
+ return log_error_errno(errno, "Failed to seek to beginning of vendor image: %m");
}
p = strappenda(i->image_root, "/", i->local, ".raw");
return 0;
}
-static void raw_import_job_on_finished(ImportJob *j) {
+static int raw_import_verify_sha256sum(RawImport *i) {
+ _cleanup_free_ char *fn = NULL;
+ const char *p, *line;
+ int r;
+
+ assert(i);
+
+ assert(i->raw_job);
+ assert(i->raw_job->sha256);
+
+ assert(i->sha256sums_job);
+ assert(i->sha256sums_job->payload);
+ assert(i->sha256sums_job->payload_size > 0);
+
+ r = import_url_last_component(i->raw_job->url, &fn);
+ if (r < 0)
+ return log_oom();
+
+ if (!filename_is_valid(fn)) {
+ log_error("Cannot verify checksum, could not determine valid server-side file name.");
+ return -EBADMSG;
+ }
+
+ line = strappenda(i->raw_job->sha256, " *", fn, "\n");
+
+ p = memmem(i->sha256sums_job->payload,
+ i->sha256sums_job->payload_size,
+ line,
+ strlen(line));
+
+ if (!p || (p != (char*) i->sha256sums_job->payload && p[-1] != '\n')) {
+ log_error("Checksum did not check out, payload has been tempered with.");
+ return -EBADMSG;
+ }
+
+ log_info("SHA256 checksum of %s is valid.", i->raw_job->url);
+
+ return 0;
+}
+
+static int raw_import_finalize(RawImport *i) {
+ int r;
+
+ assert(i);
+
+ if (!IMPORT_JOB_STATE_IS_COMPLETE(i->raw_job) ||
+ !IMPORT_JOB_STATE_IS_COMPLETE(i->sha256sums_job))
+ return 0;
+
+ if (!i->raw_job->etag_exists) {
+ assert(i->temp_path);
+ assert(i->final_path);
+ assert(i->raw_job->disk_fd >= 0);
+
+ r = raw_import_verify_sha256sum(i);
+ if (r < 0)
+ return r;
+
+ r = rename(i->temp_path, i->final_path);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to move RAW file into place: %m");
+
+ free(i->temp_path);
+ i->temp_path = NULL;
+ }
+
+ r = raw_import_make_local_copy(i);
+ if (r < 0)
+ return r;
+
+ i->raw_job->disk_fd = safe_close(i->raw_job->disk_fd);
+
+ return 1;
+}
+
+static void raw_import_invoke_finished(RawImport *i, int r) {
+ assert(i);
+
+ if (i->on_finished)
+ i->on_finished(i, r, i->userdata);
+ else
+ sd_event_exit(i->event, r);
+}
+
+static void raw_import_raw_job_on_finished(ImportJob *j) {
RawImport *i;
int r;
/* This is invoked if either the download completed
* successfully, or the download was skipped because we
- * already have the etag. */
+ * already have the etag. In this case ->etag_exists is
+ * true. */
+
+ if (!j->etag_exists) {
+ assert(j->disk_fd >= 0);
- if (j->disk_fd >= 0) {
r = raw_import_maybe_convert_qcow2(i);
if (r < 0)
goto finish;
r = import_make_read_only_fd(j->disk_fd);
if (r < 0)
goto finish;
+ }
- r = rename(i->temp_path, i->final_path);
- if (r < 0) {
- r = log_error_errno(errno, "Failed to move RAW file into place: %m");
- goto finish;
- }
+ r = raw_import_finalize(i);
+ if (r < 0)
+ goto finish;
+ if (r == 0)
+ return;
- free(i->temp_path);
- i->temp_path = NULL;
+ r = 0;
+
+finish:
+ raw_import_invoke_finished(i, r);
+}
+
+static void raw_import_sha256sums_job_on_finished(ImportJob *j) {
+ RawImport *i;
+ int r;
+
+ assert(j);
+ assert(j->userdata);
+
+ i = j->userdata;
+ if (j->error != 0) {
+ r = j->error;
+ goto finish;
}
- r = raw_import_make_local_copy(i);
+ r = raw_import_finalize(i);
if (r < 0)
goto finish;
-
- j->disk_fd = safe_close(j->disk_fd);
+ if (r == 0)
+ return;
r = 0;
-
finish:
- if (i->on_finished)
- i->on_finished(i, r, i->userdata);
- else
- sd_event_exit(i->event, r);
+ raw_import_invoke_finished(i, r);
}
-static int raw_import_job_on_open_disk(ImportJob *j) {
+static int raw_import_raw_job_on_open_disk(ImportJob *j) {
RawImport *i;
int r;
}
int raw_import_pull(RawImport *i, const char *url, const char *local, bool force_local) {
+ _cleanup_free_ char *sha256sums_url = NULL;
int r;
assert(i);
r = free_and_strdup(&i->local, local);
if (r < 0)
return r;
-
i->force_local = force_local;
+ /* Queue job for the image itself */
r = import_job_new(&i->raw_job, url, i->glue, i);
if (r < 0)
return r;
- i->raw_job->on_finished = raw_import_job_on_finished;
- i->raw_job->on_open_disk = raw_import_job_on_open_disk;
+ i->raw_job->on_finished = raw_import_raw_job_on_finished;
+ i->raw_job->on_open_disk = raw_import_raw_job_on_open_disk;
+ i->raw_job->calc_hash = true;
r = import_find_old_etags(url, i->image_root, DT_REG, ".raw-", ".raw", &i->raw_job->old_etags);
if (r < 0)
return r;
- return import_job_begin(i->raw_job);
+ /* Queue job for the SHA256SUMS file for the image */
+ r = import_url_change_last_component(url, "SHA256SUMS", &sha256sums_url);
+ if (r < 0)
+ return r;
+
+ r = import_job_new(&i->sha256sums_job, sha256sums_url, i->glue, i);
+ if (r < 0)
+ return r;
+
+ i->sha256sums_job->on_finished = raw_import_sha256sums_job_on_finished;
+ i->sha256sums_job->uncompressed_max = i->sha256sums_job->compressed_max = 1ULL * 1024ULL * 1024ULL;
+
+ r = import_job_begin(i->raw_job);
+ if (r < 0)
+ return r;
+
+ r = import_job_begin(i->sha256sums_job);
+ if (r < 0)
+ return r;
+
+ return 0;
}
~ianmdlvl / elogind.git / blobdiff