2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering#include <sys/xattr.h>

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering#include "strv.h"

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering#include "import-job.h"

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart PoetteringImportJob* import_job_unref(ImportJob *j) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (!j)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return NULL;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering curl_glue_remove_and_free(j->glue, j->curl);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering curl_slist_free_all(j->request_header);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering safe_close(j->disk_fd);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->compressed == IMPORT_JOB_XZ)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering lzma_end(&j->xz);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering else if (j->compressed == IMPORT_JOB_GZIP)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering inflateEnd(&j->gzip);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering else if (j->compressed == IMPORT_JOB_BZIP2)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering BZ2_bzDecompressEnd(&j->bzip2);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->checksum_context)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering gcry_md_close(j->checksum_context);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering free(j->url);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering free(j->etag);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering strv_free(j->old_etags);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering free(j->payload);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering free(j->checksum);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering free(j);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering return NULL;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering}

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poetteringstatic void import_job_finish(ImportJob *j, int ret) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering assert(j);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->state == IMPORT_JOB_DONE ||

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->state == IMPORT_JOB_FAILED)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering return;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (ret == 0) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->state = IMPORT_JOB_DONE;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->progress_percent = 100;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_info("Download of %s complete.", j->url);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering } else {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->state = IMPORT_JOB_FAILED;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->error = ret;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering }

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->on_finished)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->on_finished(j);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering}

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poetteringvoid import_job_curl_on_finished(CurlGlue *g, CURL *curl, CURLcode result) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering ImportJob *j = NULL;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering CURLcode code;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering long status;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering int r;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (curl_easy_getinfo(curl, CURLINFO_PRIVATE, &j) != CURLE_OK)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering return;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (!j || j->state == IMPORT_JOB_DONE || j->state == IMPORT_JOB_FAILED)

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering return;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (result != CURLE_OK) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_error("Transfer failed: %s", curl_easy_strerror(result));

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = -EIO;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering }

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &status);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (code != CURLE_OK) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_error("Failed to retrieve response code: %s", curl_easy_strerror(code));

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = -EIO;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering } else if (status == 304) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_info("Image already downloaded. Skipping download.");

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->etag_exists = true;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = 0;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering } else if (status >= 300) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_error("HTTP request to %s failed with code %li.", j->url, status);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = -EIO;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering } else if (status < 200) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_error("HTTP request to %s finished with unexpected code %li.", j->url, status);

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = -EIO;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering }

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->state != IMPORT_JOB_RUNNING) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_error("Premature connection termination.");

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = -EIO;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering }

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->content_length != (uint64_t) -1 &&

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering j->content_length != j->written_compressed) {

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering log_error("Download truncated.");

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering r = -EIO;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering goto finish;

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering }

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->checksum_context) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering uint8_t *k;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering k = gcry_md_read(j->checksum_context, GCRY_MD_SHA256);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (!k) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("Failed to get checksum.");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = -EIO;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering goto finish;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->checksum = hexmem(k, gcry_md_get_algo_dlen(GCRY_MD_SHA256));

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (!j->checksum) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = log_oom();

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering goto finish;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_debug("SHA256 of %s is %s.", j->url, j->checksum);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->disk_fd >= 0 && j->allow_sparse) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering /* Make sure the file size is right, in case the file was

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (ftruncate(j->disk_fd, j->written_uncompressed) < 0) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error_errno(errno, "Failed to truncate file: %m");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = -errno;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering goto finish;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

547973dea7abd6c124ff6c79fe2bbe322a7314aeLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->etag)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering (void) fsetxattr(j->disk_fd, "user.source_etag", j->etag, strlen(j->etag), 0);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->url)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering (void) fsetxattr(j->disk_fd, "user.source_url", j->url, strlen(j->url), 0);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->mtime != 0) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering struct timespec ut[2];

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering timespec_store(&ut[0], j->mtime);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering ut[1] = ut[0];

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering (void) futimens(j->disk_fd, ut);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering (void) fd_setcrtime(j->disk_fd, j->mtime);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = 0;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poetteringfinish:

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering import_job_finish(j, r);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering}

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poetteringstatic int import_job_write_uncompressed(ImportJob *j, void *p, size_t sz) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering ssize_t n;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering assert(j);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering assert(p);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (sz <= 0)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return 0;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->written_uncompressed + sz < j->written_uncompressed) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("File too large, overflow");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EOVERFLOW;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->written_uncompressed + sz > j->uncompressed_max) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("File overly large, refusing");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EFBIG;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->disk_fd >= 0) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->allow_sparse)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering n = sparse_write(j->disk_fd, p, sz, 64);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering else

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering n = write(j->disk_fd, p, sz);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (n < 0) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error_errno(errno, "Failed to write file: %m");

2a326321594f752b73a5aec0eb73e5bf59f76b3cLennart Poettering return -errno;

547973dea7abd6c124ff6c79fe2bbe322a7314aeLennart Poettering }

547973dea7abd6c124ff6c79fe2bbe322a7314aeLennart Poettering if ((size_t) n < sz) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("Short write");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EIO;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering } else {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (!GREEDY_REALLOC(j->payload, j->payload_allocated, j->payload_size + sz))

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return log_oom();

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering memcpy(j->payload + j->payload_size, p, sz);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->payload_size += sz;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->written_uncompressed += sz;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return 0;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering}

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poetteringstatic int import_job_write_compressed(ImportJob *j, void *p, size_t sz) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering int r;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering assert(j);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering assert(p);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (sz <= 0)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return 0;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->written_compressed + sz < j->written_compressed) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("File too large, overflow");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EOVERFLOW;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->written_compressed + sz > j->compressed_max) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("File overly large, refusing.");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EFBIG;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->content_length != (uint64_t) -1 &&

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->written_compressed + sz > j->content_length) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("Content length incorrect.");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EFBIG;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (j->checksum_context)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering gcry_md_write(j->checksum_context, p, sz);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering switch (j->compressed) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering case IMPORT_JOB_UNCOMPRESSED:

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = import_job_write_uncompressed(j, p, sz);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (r < 0)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return r;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering break;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering case IMPORT_JOB_XZ:

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->xz.next_in = p;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->xz.avail_in = sz;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering while (j->xz.avail_in > 0) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering uint8_t buffer[16 * 1024];

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering lzma_ret lzr;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->xz.next_out = buffer;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->xz.avail_out = sizeof(buffer);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering lzr = lzma_code(&j->xz, LZMA_RUN);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (lzr != LZMA_OK && lzr != LZMA_STREAM_END) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("Decompression error.");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EIO;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = import_job_write_uncompressed(j, buffer, sizeof(buffer) - j->xz.avail_out);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (r < 0)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return r;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering break;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering case IMPORT_JOB_GZIP:

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->gzip.next_in = p;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->gzip.avail_in = sz;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering while (j->gzip.avail_in > 0) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering uint8_t buffer[16 * 1024];

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->gzip.next_out = buffer;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering j->gzip.avail_out = sizeof(buffer);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = inflate(&j->gzip, Z_NO_FLUSH);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (r != Z_OK && r != Z_STREAM_END) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering log_error("Decompression error.");

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return -EIO;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering r = import_job_write_uncompressed(j, buffer, sizeof(buffer) - j->gzip.avail_out);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (r < 0)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return r;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering break;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering case IMPORT_JOB_BZIP2:

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering j->bzip2.next_in = p;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering j->bzip2.avail_in = sz;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering while (j->bzip2.avail_in > 0) {

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering uint8_t buffer[16 * 1024];

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering j->bzip2.next_out = (char*) buffer;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering j->bzip2.avail_out = sizeof(buffer);

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering r = BZ2_bzDecompress(&j->bzip2);

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering if (r != BZ_OK && r != BZ_STREAM_END) {

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering log_error("Decompression error.");

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering return -EIO;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering }

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering r = import_job_write_uncompressed(j, buffer, sizeof(buffer) - j->bzip2.avail_out);

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering if (r < 0)

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering return r;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering }

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering break;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering default:

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering assert_not_reached("Unknown compression");

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering }

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering j->written_compressed += sz;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering return 0;

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering}

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poetteringstatic int import_job_open_disk(ImportJob *j) {

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering int r;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering assert(j);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering

a3db237b8f1b97867395e1419f39b8ba5749b777Lennart Poettering if (j->on_open_disk) {

72667f0890372a952a7c5b8cc498ec3cf9440973Lennart Poettering r = j->on_open_disk(j);

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering if (r < 0)

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering return r;

2b442ac87838be7c326c984d8751c96dee7258abLennart Poettering }

if (j->disk_fd >= 0) {

/* Check if we can do sparse files */

if (lseek(j->disk_fd, SEEK_SET, 0) == 0)

j->allow_sparse = true;

else {

if (errno != ESPIPE)

return log_error_errno(errno, "Failed to seek on file descriptor: %m");

j->allow_sparse = false;

}

}

if (j->calc_checksum) {

if (gcry_md_open(&j->checksum_context, GCRY_MD_SHA256, 0) != 0) {

log_error("Failed to initialize hash context.");

return -EIO;

}

}

return 0;

}

static int import_job_detect_compression(ImportJob *j) {

static const uint8_t xz_signature[] = {

0xfd, '7', 'z', 'X', 'Z', 0x00

};

static const uint8_t gzip_signature[] = {

0x1f, 0x8b

};

static const uint8_t bzip2_signature[] = {

'B', 'Z', 'h'

};

_cleanup_free_ uint8_t *stub = NULL;

size_t stub_size;

int r;

assert(j);

if (j->payload_size < MAX3(sizeof(xz_signature),

sizeof(gzip_signature),

sizeof(bzip2_signature)))

return 0;

if (memcmp(j->payload, xz_signature, sizeof(xz_signature)) == 0)

j->compressed = IMPORT_JOB_XZ;

else if (memcmp(j->payload, gzip_signature, sizeof(gzip_signature)) == 0)

j->compressed = IMPORT_JOB_GZIP;

else if (memcmp(j->payload, bzip2_signature, sizeof(bzip2_signature)) == 0)

j->compressed = IMPORT_JOB_BZIP2;

else

j->compressed = IMPORT_JOB_UNCOMPRESSED;

log_debug("Stream is XZ compressed: %s", yes_no(j->compressed == IMPORT_JOB_XZ));

log_debug("Stream is GZIP compressed: %s", yes_no(j->compressed == IMPORT_JOB_GZIP));

log_debug("Stream is BZIP2 compressed: %s", yes_no(j->compressed == IMPORT_JOB_BZIP2));

if (j->compressed == IMPORT_JOB_XZ) {

lzma_ret xzr;

xzr = lzma_stream_decoder(&j->xz, UINT64_MAX, LZMA_TELL_UNSUPPORTED_CHECK);

if (xzr != LZMA_OK) {

log_error("Failed to initialize XZ decoder.");

return -EIO;

}

}

if (j->compressed == IMPORT_JOB_GZIP) {

r = inflateInit2(&j->gzip, 15+16);

if (r != Z_OK) {

log_error("Failed to initialize gzip decoder.");

return -EIO;

}

}

if (j->compressed == IMPORT_JOB_BZIP2) {

r = BZ2_bzDecompressInit(&j->bzip2, 0, 0);

if (r != BZ_OK) {

log_error("Failed to initialize bzip2 decoder.");

return -EIO;

}

}

r = import_job_open_disk(j);

if (r < 0)

return r;

/* Now, take the payload we read so far, and decompress it */

stub = j->payload;

stub_size = j->payload_size;

j->payload = NULL;

j->payload_size = 0;

j->payload_allocated = 0;

j->state = IMPORT_JOB_RUNNING;

r = import_job_write_compressed(j, stub, stub_size);

if (r < 0)

return r;

return 0;

}

static size_t import_job_write_callback(void *contents, size_t size, size_t nmemb, void *userdata) {

ImportJob *j = userdata;

size_t sz = size * nmemb;

int r;

assert(contents);

assert(j);

switch (j->state) {

case IMPORT_JOB_ANALYZING:

/* Let's first check what it actually is */

if (!GREEDY_REALLOC(j->payload, j->payload_allocated, j->payload_size + sz)) {

r = log_oom();

goto fail;

}

memcpy(j->payload + j->payload_size, contents, sz);

j->payload_size += sz;

r = import_job_detect_compression(j);

if (r < 0)

goto fail;

break;

case IMPORT_JOB_RUNNING:

r = import_job_write_compressed(j, contents, sz);

if (r < 0)

goto fail;

break;

case IMPORT_JOB_DONE:

case IMPORT_JOB_FAILED:

r = -ESTALE;

goto fail;

default:

assert_not_reached("Impossible state.");

}

return sz;

fail:

import_job_finish(j, r);

return 0;

}

static size_t import_job_header_callback(void *contents, size_t size, size_t nmemb, void *userdata) {

ImportJob *j = userdata;

size_t sz = size * nmemb;

_cleanup_free_ char *length = NULL, *last_modified = NULL;

char *etag;

int r;

assert(contents);

assert(j);

if (j->state == IMPORT_JOB_DONE || j->state == IMPORT_JOB_FAILED) {

r = -ESTALE;

goto fail;

}

assert(j->state == IMPORT_JOB_ANALYZING);

r = curl_header_strdup(contents, sz, "ETag:", &etag);

if (r < 0) {

log_oom();

goto fail;

}

if (r > 0) {

free(j->etag);

j->etag = etag;

if (strv_contains(j->old_etags, j->etag)) {

log_info("Image already downloaded. Skipping download.");

j->etag_exists = true;

import_job_finish(j, 0);

return sz;

}

return sz;

}

r = curl_header_strdup(contents, sz, "Content-Length:", &length);

if (r < 0) {

log_oom();

goto fail;

}

if (r > 0) {

(void) safe_atou64(length, &j->content_length);

if (j->content_length != (uint64_t) -1) {

char bytes[FORMAT_BYTES_MAX];

if (j->content_length > j->compressed_max) {

log_error("Content too large.");

r = -EFBIG;

goto fail;

}

log_info("Downloading %s for %s.", format_bytes(bytes, sizeof(bytes), j->content_length), j->url);

}

return sz;

}

r = curl_header_strdup(contents, sz, "Last-Modified:", &last_modified);

if (r < 0) {

log_oom();

goto fail;

}

if (r > 0) {

(void) curl_parse_http_time(last_modified, &j->mtime);

return sz;

}

if (j->on_header) {

r = j->on_header(j, contents, sz);

if (r < 0)

goto fail;

}

return sz;

fail:

import_job_finish(j, r);

return 0;

}

static int import_job_progress_callback(void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow) {

ImportJob *j = userdata;

unsigned percent;

usec_t n;

assert(j);

if (dltotal <= 0)

return 0;

percent = ((100 * dlnow) / dltotal);

n = now(CLOCK_MONOTONIC);

if (n > j->last_status_usec + USEC_PER_SEC &&

percent != j->progress_percent &&

dlnow < dltotal) {

char buf[FORMAT_TIMESPAN_MAX];

if (n - j->start_usec > USEC_PER_SEC && dlnow > 0) {

char y[FORMAT_BYTES_MAX];

usec_t left, done;

done = n - j->start_usec;

left = (usec_t) (((double) done * (double) dltotal) / dlnow) - done;

log_info("Got %u%% of %s. %s left at %s/s.",

percent,

j->url,

format_timespan(buf, sizeof(buf), left, USEC_PER_SEC),

format_bytes(y, sizeof(y), (uint64_t) ((double) dlnow / ((double) done / (double) USEC_PER_SEC))));

} else

log_info("Got %u%% of %s.", percent, j->url);

j->progress_percent = percent;

j->last_status_usec = n;

if (j->on_progress)

j->on_progress(j);

}

return 0;

}

int import_job_new(ImportJob **ret, const char *url, CurlGlue *glue, void *userdata) {

_cleanup_(import_job_unrefp) ImportJob *j = NULL;

assert(url);

assert(glue);

assert(ret);

j = new0(ImportJob, 1);

if (!j)

return -ENOMEM;

j->state = IMPORT_JOB_INIT;

j->disk_fd = -1;

j->userdata = userdata;

j->glue = glue;

j->content_length = (uint64_t) -1;

j->start_usec = now(CLOCK_MONOTONIC);

j->compressed_max = j->uncompressed_max = 8LLU * 1024LLU * 1024LLU * 1024LLU; /* 8GB */

j->url = strdup(url);

if (!j->url)

return -ENOMEM;

*ret = j;

j = NULL;

return 0;

}

int import_job_begin(ImportJob *j) {

int r;

assert(j);

if (j->state != IMPORT_JOB_INIT)

return -EBUSY;

r = curl_glue_make(&j->curl, j->url, j);

if (r < 0)

return r;

if (!strv_isempty(j->old_etags)) {

_cleanup_free_ char *cc = NULL, *hdr = NULL;

cc = strv_join(j->old_etags, ", ");

if (!cc)

return -ENOMEM;

hdr = strappend("If-None-Match: ", cc);

if (!hdr)

return -ENOMEM;

if (!j->request_header) {

j->request_header = curl_slist_new(hdr, NULL);

if (!j->request_header)

return -ENOMEM;

} else {

struct curl_slist *l;

l = curl_slist_append(j->request_header, hdr);

if (!l)

return -ENOMEM;

j->request_header = l;

}

}

if (j->request_header) {

if (curl_easy_setopt(j->curl, CURLOPT_HTTPHEADER, j->request_header) != CURLE_OK)

return -EIO;

}

if (curl_easy_setopt(j->curl, CURLOPT_WRITEFUNCTION, import_job_write_callback) != CURLE_OK)

return -EIO;

if (curl_easy_setopt(j->curl, CURLOPT_WRITEDATA, j) != CURLE_OK)

return -EIO;

if (curl_easy_setopt(j->curl, CURLOPT_HEADERFUNCTION, import_job_header_callback) != CURLE_OK)

return -EIO;

if (curl_easy_setopt(j->curl, CURLOPT_HEADERDATA, j) != CURLE_OK)

return -EIO;

if (curl_easy_setopt(j->curl, CURLOPT_XFERINFOFUNCTION, import_job_progress_callback) != CURLE_OK)

return -EIO;

if (curl_easy_setopt(j->curl, CURLOPT_XFERINFODATA, j) != CURLE_OK)

return -EIO;

if (curl_easy_setopt(j->curl, CURLOPT_NOPROGRESS, 0) != CURLE_OK)

return -EIO;

r = curl_glue_add(j->glue, j->curl);

if (r < 0)

return r;

j->state = IMPORT_JOB_ANALYZING;

return 0;

}