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-rw-r--r--src/import/import-dkr.c2
-rw-r--r--src/import/import-job.c629
-rw-r--r--src/import/import-job.h101
-rw-r--r--src/import/import-raw.c14
-rw-r--r--src/import/import-tar.c296
-rw-r--r--src/import/import-tar.h36
-rw-r--r--src/import/import-util.c201
-rw-r--r--src/import/import-util.h31
-rw-r--r--src/import/import.c152
9 files changed, 1444 insertions, 18 deletions
diff --git a/src/import/import-dkr.c b/src/import/import-dkr.c
index b54a1a6d94..8dfd2707ee 100644
--- a/src/import/import-dkr.c
+++ b/src/import/import-dkr.c
@@ -422,7 +422,7 @@ static void dkr_import_name_maybe_finish(DkrImportName *name) {
return;
}
- log_info("Created new local image %s.", p);
+ log_info("Created new local image '%s'.", name->local);
}
dkr_import_finish(name->import, 0);
diff --git a/src/import/import-job.c b/src/import/import-job.c
new file mode 100644
index 0000000000..5a4ea69cb2
--- /dev/null
+++ b/src/import/import-job.c
@@ -0,0 +1,629 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/xattr.h>
+
+#include "strv.h"
+#include "import-job.h"
+
+ImportJob* import_job_unref(ImportJob *j) {
+ if (!j)
+ return NULL;
+
+ curl_glue_remove_and_free(j->glue, j->curl);
+ curl_slist_free_all(j->request_header);
+
+ safe_close(j->disk_fd);
+
+ if (j->compressed == IMPORT_JOB_XZ)
+ lzma_end(&j->xz);
+ else if (j->compressed == IMPORT_JOB_GZIP)
+ inflateEnd(&j->gzip);
+
+ free(j->url);
+ free(j->etag);
+ strv_free(j->old_etags);
+ free(j->payload);
+
+ free(j);
+
+ return NULL;
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(ImportJob*, import_job_unref);
+
+static void import_job_finish(ImportJob *j, int ret) {
+ assert(j);
+
+ if (j->state == IMPORT_JOB_DONE ||
+ j->state == IMPORT_JOB_FAILED)
+ return;
+
+ if (ret == 0)
+ j->state = IMPORT_JOB_DONE;
+ else {
+ j->state = IMPORT_JOB_FAILED;
+ j->error = ret;
+ }
+
+ if (j->on_finished)
+ j->on_finished(j);
+}
+
+void import_job_curl_on_finished(CurlGlue *g, CURL *curl, CURLcode result) {
+ ImportJob *j = NULL;
+ CURLcode code;
+ long status;
+ int r;
+
+ if (curl_easy_getinfo(curl, CURLINFO_PRIVATE, &j) != CURLE_OK)
+ return;
+
+ if (!j || j->state == IMPORT_JOB_DONE || j->state == IMPORT_JOB_FAILED)
+ return;
+
+ if (result != CURLE_OK) {
+ log_error("Transfer failed: %s", curl_easy_strerror(result));
+ r = -EIO;
+ goto finish;
+ }
+
+ code = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &status);
+ if (code != CURLE_OK) {
+ log_error("Failed to retrieve response code: %s", curl_easy_strerror(code));
+ r = -EIO;
+ goto finish;
+ } else if (status == 304) {
+ log_info("Image already downloaded. Skipping download.");
+ r = 0;
+ goto finish;
+ } else if (status >= 300) {
+ log_error("HTTP request to %s failed with code %li.", j->url, status);
+ r = -EIO;
+ goto finish;
+ } else if (status < 200) {
+ log_error("HTTP request to %s finished with unexpected code %li.", j->url, status);
+ r = -EIO;
+ goto finish;
+ }
+
+ if (j->state != IMPORT_JOB_RUNNING) {
+ log_error("Premature connection termination.");
+ r = -EIO;
+ goto finish;
+ }
+
+ if (j->content_length != (uint64_t) -1 &&
+ j->content_length != j->written_compressed) {
+ log_error("Download truncated.");
+ r = -EIO;
+ goto finish;
+ }
+
+ if (j->disk_fd >= 0 && j->allow_sparse) {
+ /* Make sure the file size is right, in case the file was
+ * sparse and we just seeked for the last part */
+
+ if (ftruncate(j->disk_fd, j->written_uncompressed) < 0) {
+ log_error_errno(errno, "Failed to truncate file: %m");
+ r = -errno;
+ goto finish;
+ }
+
+ if (j->etag)
+ (void) fsetxattr(j->disk_fd, "user.source_etag", j->etag, strlen(j->etag), 0);
+ if (j->url)
+ (void) fsetxattr(j->disk_fd, "user.source_url", j->url, strlen(j->url), 0);
+
+ if (j->mtime != 0) {
+ struct timespec ut[2];
+
+ timespec_store(&ut[0], j->mtime);
+ ut[1] = ut[0];
+ (void) futimens(j->disk_fd, ut);
+
+ (void) fd_setcrtime(j->disk_fd, j->mtime);
+ }
+ }
+
+ r = 0;
+
+finish:
+ import_job_finish(j, r);
+}
+
+
+static int import_job_write_uncompressed(ImportJob *j, void *p, size_t sz) {
+ ssize_t n;
+
+ assert(j);
+ assert(p);
+ assert(sz > 0);
+ assert(j->disk_fd >= 0);
+
+ if (j->written_uncompressed + sz < j->written_uncompressed) {
+ log_error("File too large, overflow");
+ return -EOVERFLOW;
+ }
+
+ if (j->written_uncompressed + sz > j->uncompressed_max) {
+ log_error("File overly large, refusing");
+ return -EFBIG;
+ }
+
+ if (j->disk_fd >= 0) {
+
+ if (j->allow_sparse)
+ n = sparse_write(j->disk_fd, p, sz, 64);
+ else
+ n = write(j->disk_fd, p, sz);
+ if (n < 0) {
+ log_error_errno(errno, "Failed to write file: %m");
+ return -errno;
+ }
+ if ((size_t) n < sz) {
+ log_error("Short write");
+ return -EIO;
+ }
+ } else {
+
+ if (!GREEDY_REALLOC(j->payload, j->payload_allocated, j->payload_size + sz))
+ return log_oom();
+
+ memcpy((uint8_t*) j->payload + j->payload_size, p, sz);
+ j->payload_size += sz;
+ }
+
+ j->written_uncompressed += sz;
+
+ return 0;
+}
+
+static int import_job_write_compressed(ImportJob *j, void *p, size_t sz) {
+ int r;
+
+ assert(j);
+ assert(p);
+ assert(sz > 0);
+ assert(j->disk_fd >= 0);
+
+ if (j->written_compressed + sz < j->written_compressed) {
+ log_error("File too large, overflow");
+ return -EOVERFLOW;
+ }
+
+ if (j->written_compressed + sz > j->compressed_max) {
+ log_error("File overly large, refusing.");
+ return -EFBIG;
+ }
+
+ if (j->content_length != (uint64_t) -1 &&
+ j->written_compressed + sz > j->content_length) {
+ log_error("Content length incorrect.");
+ return -EFBIG;
+ }
+
+ switch (j->compressed) {
+
+ case IMPORT_JOB_UNCOMPRESSED:
+ r = import_job_write_uncompressed(j, p, sz);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case IMPORT_JOB_XZ:
+ j->xz.next_in = p;
+ j->xz.avail_in = sz;
+
+ while (j->xz.avail_in > 0) {
+ uint8_t buffer[16 * 1024];
+ lzma_ret lzr;
+
+ j->xz.next_out = buffer;
+ j->xz.avail_out = sizeof(buffer);
+
+ lzr = lzma_code(&j->xz, LZMA_RUN);
+ if (lzr != LZMA_OK && lzr != LZMA_STREAM_END) {
+ log_error("Decompression error.");
+ return -EIO;
+ }
+
+ r = import_job_write_uncompressed(j, buffer, sizeof(buffer) - j->xz.avail_out);
+ if (r < 0)
+ return r;
+ }
+
+ break;
+
+ case IMPORT_JOB_GZIP:
+ j->gzip.next_in = p;
+ j->gzip.avail_in = sz;
+
+ while (j->gzip.avail_in > 0) {
+ uint8_t buffer[16 * 1024];
+
+ j->gzip.next_out = buffer;
+ j->gzip.avail_out = sizeof(buffer);
+
+ r = inflate(&j->gzip, Z_NO_FLUSH);
+ if (r != Z_OK && r != Z_STREAM_END) {
+ log_error("Decompression error.");
+ return -EIO;
+ }
+
+ r = import_job_write_uncompressed(j, buffer, sizeof(buffer) - j->gzip.avail_out);
+ if (r < 0)
+ return r;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Unknown compression");
+ }
+
+ j->written_compressed += sz;
+
+ return 0;
+}
+
+static int import_job_open_disk(ImportJob *j) {
+ int r;
+
+ assert(j);
+
+ if (j->on_open_disk) {
+ r = j->on_open_disk(j);
+ if (r < 0)
+ return r;
+ }
+
+ 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;
+ }
+ }
+
+ 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
+ };
+
+ _cleanup_free_ uint8_t *stub = NULL;
+ size_t stub_size;
+
+ int r;
+
+ assert(j);
+
+ if (j->payload_size < MAX(sizeof(xz_signature), sizeof(gzip_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
+ 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));
+
+ 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;
+ }
+ }
+
+ 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->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((uint8_t*) 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.");
+ 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.", format_bytes(bytes, sizeof(bytes), j->content_length));
+ }
+
+ 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;
+ }
+
+ 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) {
+ char buf[FORMAT_TIMESPAN_MAX];
+
+ if (n - j->start_usec > USEC_PER_SEC && dlnow > 0) {
+ 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.", percent, j->url, format_timespan(buf, sizeof(buf), left, USEC_PER_SEC));
+ } else
+ log_info("Got %u%% of %s.", percent, j->url);
+
+ j->progress_percent = percent;
+ j->last_status_usec = n;
+ }
+
+ 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;
+
+ j->request_header = curl_slist_new(hdr, NULL);
+ if (!j->request_header)
+ return -ENOMEM;
+
+ 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;
+}
diff --git a/src/import/import-job.h b/src/import/import-job.h
new file mode 100644
index 0000000000..843daa217c
--- /dev/null
+++ b/src/import/import-job.h
@@ -0,0 +1,101 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <lzma.h>
+#include <zlib.h>
+
+#include "macro.h"
+#include "curl-util.h"
+
+typedef struct ImportJob ImportJob;
+
+typedef void (*ImportJobFinished)(ImportJob *job);
+typedef int (*ImportJobOpenDisk)(ImportJob *job);
+
+typedef enum ImportJobState {
+ IMPORT_JOB_INIT,
+ IMPORT_JOB_ANALYZING, /* Still reading into ->payload, to figure out what we have */
+ IMPORT_JOB_RUNNING, /* Writing to destination */
+ IMPORT_JOB_DONE,
+ IMPORT_JOB_FAILED,
+ _IMPORT_JOB_STATE_MAX,
+ _IMPORT_JOB_STATE_INVALID = -1,
+} ImportJobState;
+
+typedef enum ImportJobCompression {
+ IMPORT_JOB_UNCOMPRESSED,
+ IMPORT_JOB_XZ,
+ IMPORT_JOB_GZIP,
+ _IMPORT_JOB_COMPRESSION_MAX,
+ _IMPORT_JOB_COMPRESSION_INVALID = -1,
+} ImportJobCompression;
+
+struct ImportJob {
+ ImportJobState state;
+ int error;
+
+ char *url;
+
+ void *userdata;
+ ImportJobFinished on_finished;
+ ImportJobOpenDisk on_open_disk;
+
+ CurlGlue *glue;
+ CURL *curl;
+ struct curl_slist *request_header;
+
+ char *etag;
+ char **old_etags;
+
+ uint64_t content_length;
+ uint64_t written_compressed;
+ uint64_t written_uncompressed;
+
+ uint64_t uncompressed_max;
+ uint64_t compressed_max;
+
+ uint8_t *payload;
+ size_t payload_size;
+ size_t payload_allocated;
+
+ int disk_fd;
+
+ usec_t mtime;
+
+ ImportJobCompression compressed;
+ lzma_stream xz;
+ z_stream gzip;
+
+ unsigned progress_percent;
+ usec_t start_usec;
+ usec_t last_status_usec;
+
+ bool allow_sparse;
+};
+
+int import_job_new(ImportJob **job, const char *url, CurlGlue *glue, void *userdata);
+ImportJob* import_job_unref(ImportJob *job);
+
+int import_job_begin(ImportJob *j);
+
+void import_job_curl_on_finished(CurlGlue *g, CURL *curl, CURLcode result);
diff --git a/src/import/import-raw.c b/src/import/import-raw.c
index 486157aa96..1fe27b6932 100644
--- a/src/import/import-raw.c
+++ b/src/import/import-raw.c
@@ -30,6 +30,7 @@
#include "qcow2-util.h"
#include "strv.h"
#include "copy.h"
+#include "import-util.h"
#include "import-raw.h"
typedef struct RawImportFile RawImportFile;
@@ -691,17 +692,6 @@ static int raw_import_file_progress_callback(void *userdata, curl_off_t dltotal,
return 0;
}
-static bool etag_is_valid(const char *etag) {
-
- if (!endswith(etag, "\""))
- return false;
-
- if (!startswith(etag, "\"") && !startswith(etag, "W/\""))
- return false;
-
- return true;
-}
-
static int raw_import_file_find_old_etags(RawImportFile *f) {
_cleanup_free_ char *escaped_url = NULL;
_cleanup_closedir_ DIR *d = NULL;
@@ -751,7 +741,7 @@ static int raw_import_file_find_old_etags(RawImportFile *f) {
if (!u)
return -ENOMEM;
- if (!etag_is_valid(u)) {
+ if (!http_etag_is_valid(u)) {
free(u);
continue;
}
diff --git a/src/import/import-tar.c b/src/import/import-tar.c
new file mode 100644
index 0000000000..43227f61f3
--- /dev/null
+++ b/src/import/import-tar.c
@@ -0,0 +1,296 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/prctl.h>
+#include <curl/curl.h>
+
+#include "hashmap.h"
+#include "utf8.h"
+#include "strv.h"
+#include "copy.h"
+#include "btrfs-util.h"
+#include "util.h"
+#include "macro.h"
+#include "mkdir.h"
+#include "curl-util.h"
+#include "import-job.h"
+#include "import-util.h"
+#include "import-tar.h"
+
+struct TarImport {
+ sd_event *event;
+ CurlGlue *glue;
+
+ char *image_root;
+
+ ImportJob *tar_job;
+
+ TarImportFinished on_finished;
+ void *userdata;
+
+ bool finished;
+
+ char *local;
+ bool force_local;
+
+ pid_t tar_pid;
+
+ char *temp_path;
+ char *final_path;
+};
+
+TarImport* tar_import_unref(TarImport *i) {
+ if (!i)
+ return NULL;
+
+ if (i->tar_pid > 0) {
+ kill(i->tar_pid, SIGKILL);
+ wait_for_terminate(i->tar_pid, NULL);
+ }
+
+ import_job_unref(i->tar_job);
+
+ curl_glue_unref(i->glue);
+ sd_event_unref(i->event);
+
+ if (i->temp_path) {
+ (void) btrfs_subvol_remove(i->temp_path);
+ (void) rm_rf_dangerous(i->temp_path, false, true, false);
+ }
+
+ free(i->final_path);
+ free(i->image_root);
+ free(i->local);
+
+ free(i);
+
+ return NULL;
+}
+
+int tar_import_new(TarImport **ret, sd_event *event, const char *image_root, TarImportFinished on_finished, void *userdata) {
+ _cleanup_(tar_import_unrefp) TarImport *i = NULL;
+ int r;
+
+ assert(ret);
+ assert(event);
+
+ i = new0(TarImport, 1);
+ if (!i)
+ return -ENOMEM;
+
+ i->on_finished = on_finished;
+ i->userdata = userdata;
+
+ i->image_root = strdup(image_root ?: "/var/lib/machines");
+ if (!i->image_root)
+ return -ENOMEM;
+
+ if (event)
+ i->event = sd_event_ref(event);
+ else {
+ r = sd_event_default(&i->event);
+ if (r < 0)
+ return r;
+ }
+
+ r = curl_glue_new(&i->glue, i->event);
+ if (r < 0)
+ return r;
+
+ i->glue->on_finished = import_job_curl_on_finished;
+ i->glue->userdata = i;
+
+ *ret = i;
+ i = NULL;
+
+ return 0;
+}
+
+static void tar_import_job_on_finished(ImportJob *j) {
+ TarImport *i;
+ int r;
+
+ assert(j);
+ assert(j->userdata);
+
+ i = j->userdata;
+
+ if (j->error != 0) {
+ r = j->error;
+ goto finish;
+ }
+
+ /* This is invoked if either the download completed
+ * successfully, or the download was skipped because we
+ * already have the etag. */
+
+ j->disk_fd = safe_close(j->disk_fd);
+
+ if (i->tar_pid > 0) {
+ r = wait_for_terminate_and_warn("tar", i->tar_pid, true);
+ i->tar_pid = 0;
+ if (r < 0)
+ goto finish;
+ }
+
+ if (i->temp_path) {
+ r = import_make_read_only(i->temp_path);
+ if (r < 0)
+ goto finish;
+
+ if (rename(i->temp_path, i->final_path) < 0) {
+ r = log_error_errno(errno, "Failed to rename to final image name: %m");
+ goto finish;
+ }
+ }
+
+ if (i->local) {
+ if (!i->final_path) {
+ r = import_make_path(j->url, j->etag, i->image_root, ".tar-", NULL, &i->final_path);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = import_make_local_copy(i->final_path, i->image_root, i->local, i->force_local);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ i->finished = true;
+
+ if (i->on_finished)
+ i->on_finished(i, r, i->userdata);
+ else
+ sd_event_exit(i->event, r);
+}
+
+static int tar_import_job_on_open_disk(ImportJob *j) {
+ _cleanup_close_pair_ int pipefd[2] = { -1 , -1 };
+ TarImport *i;
+ int r;
+
+ assert(j);
+ assert(j->userdata);
+
+ i = j->userdata;
+
+ r = import_make_path(j->url, j->etag, i->image_root, ".tar-", NULL, &i->final_path);
+ if (r < 0)
+ return log_oom();
+
+ r = tempfn_random(i->final_path, &i->temp_path);
+ if (r < 0)
+ return log_oom();
+
+ mkdir_parents_label(i->temp_path, 0700);
+
+ r = btrfs_subvol_make(i->temp_path);
+ if (r == -ENOTTY) {
+ if (mkdir(i->temp_path, 0755) < 0)
+ return log_error_errno(errno, "Failed to create directory %s: %m", i->temp_path);
+ } else if (r < 0)
+ return log_error_errno(errno, "Failed to create subvolume %s: %m", i->temp_path);
+
+ if (pipe2(pipefd, O_CLOEXEC) < 0)
+ return log_error_errno(errno, "Failed to create pipe for tar: %m");
+
+ i->tar_pid = fork();
+ if (i->tar_pid < 0)
+ return log_error_errno(errno, "Failed to fork off tar: %m");
+ if (i->tar_pid == 0) {
+ int null_fd;
+
+ reset_all_signal_handlers();
+ reset_signal_mask();
+ assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
+
+ pipefd[1] = safe_close(pipefd[1]);
+
+ if (dup2(pipefd[0], STDIN_FILENO) != STDIN_FILENO) {
+ log_error_errno(errno, "Failed to dup2() fd: %m");
+ _exit(EXIT_FAILURE);
+ }
+
+ if (pipefd[0] != STDIN_FILENO)
+ safe_close(pipefd[0]);
+
+ null_fd = open("/dev/null", O_WRONLY|O_NOCTTY);
+ if (null_fd < 0) {
+ log_error_errno(errno, "Failed to open /dev/null: %m");
+ _exit(EXIT_FAILURE);
+ }
+
+ if (dup2(null_fd, STDOUT_FILENO) != STDOUT_FILENO) {
+ log_error_errno(errno, "Failed to dup2() fd: %m");
+ _exit(EXIT_FAILURE);
+ }
+
+ if (null_fd != STDOUT_FILENO)
+ safe_close(null_fd);
+
+ execlp("tar", "tar", "--numeric-owner", "-C", i->temp_path, "-px", NULL);
+ _exit(EXIT_FAILURE);
+ }
+
+ pipefd[0] = safe_close(pipefd[0]);
+
+ j->disk_fd = pipefd[1];
+ pipefd[1] = -1;
+
+ return 0;
+}
+
+int tar_import_pull(TarImport *i, const char *url, const char *local, bool force_local) {
+ int r;
+
+ assert(i);
+
+ if (i->tar_job)
+ return -EBUSY;
+
+ if (!http_url_is_valid(url))
+ return -EINVAL;
+
+ if (local && !machine_name_is_valid(local))
+ return -EINVAL;
+
+ r = free_and_strdup(&i->local, local);
+ if (r < 0)
+ return r;
+
+ i->force_local = force_local;
+
+ r = import_job_new(&i->tar_job, url, i->glue, i);
+ if (r < 0)
+ return r;
+
+ i->tar_job->on_finished = tar_import_job_on_finished;
+ i->tar_job->on_open_disk = tar_import_job_on_open_disk;
+
+ r = import_find_old_etags(url, i->image_root, DT_DIR, ".tar-", NULL, &i->tar_job->old_etags);
+ if (r < 0)
+ return r;
+
+ return import_job_begin(i->tar_job);
+}
diff --git a/src/import/import-tar.h b/src/import/import-tar.h
new file mode 100644
index 0000000000..6a7477fee7
--- /dev/null
+++ b/src/import/import-tar.h
@@ -0,0 +1,36 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "sd-event.h"
+#include "macro.h"
+
+typedef struct TarImport TarImport;
+
+typedef void (*TarImportFinished)(TarImport *import, int error, void *userdata);
+
+int tar_import_new(TarImport **import, sd_event *event, const char *image_root, TarImportFinished on_finished, void *userdata);
+TarImport* tar_import_unref(TarImport *import);
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(TarImport*, tar_import_unref);
+
+int tar_import_pull(TarImport *import, const char *rul, const char *local, bool force_local);
diff --git a/src/import/import-util.c b/src/import/import-util.c
new file mode 100644
index 0000000000..24c8ac1d13
--- /dev/null
+++ b/src/import/import-util.c
@@ -0,0 +1,201 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "util.h"
+#include "strv.h"
+#include "copy.h"
+#include "btrfs-util.h"
+#include "import-util.h"
+
+#define FILENAME_ESCAPE "/.#\"\'"
+
+bool http_etag_is_valid(const char *etag) {
+ if (!endswith(etag, "\""))
+ return false;
+
+ if (!startswith(etag, "\"") && !startswith(etag, "W/\""))
+ return false;
+
+ return true;
+}
+
+int import_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;
+ struct dirent *de;
+ int r;
+
+ assert(url);
+ assert(etags);
+
+ if (!image_root)
+ image_root = "/var/lib/machines";
+
+ escaped_url = xescape(url, FILENAME_ESCAPE);
+ if (!escaped_url)
+ return -ENOMEM;
+
+ d = opendir(image_root);
+ if (!d) {
+ if (errno == ENOENT) {
+ *etags = NULL;
+ return 0;
+ }
+
+ return -errno;
+ }
+
+ FOREACH_DIRENT_ALL(de, d, return -errno) {
+ const char *a, *b;
+ char *u;
+
+ if (de->d_type != DT_UNKNOWN &&
+ de->d_type != dt)
+ continue;
+
+ if (prefix) {
+ a = startswith(de->d_name, prefix);
+ if (!a)
+ continue;
+ } else
+ a = de->d_name;
+
+ a = startswith(a, escaped_url);
+ if (!a)
+ continue;
+
+ a = startswith(a, ".");
+ if (!a)
+ continue;
+
+ if (suffix) {
+ b = endswith(de->d_name, suffix);
+ if (!b)
+ continue;
+ } else
+ b = strchr(de->d_name, 0);
+
+ if (a >= b)
+ continue;
+
+ u = cunescape_length(a, b - a);
+ if (!u)
+ return -ENOMEM;
+
+ if (!http_etag_is_valid(u)) {
+ free(u);
+ continue;
+ }
+
+ r = strv_consume(&l, u);
+ if (r < 0)
+ return r;
+ }
+
+ *etags = l;
+ l = NULL;
+
+ return 0;
+}
+
+int import_make_local_copy(const char *final, const char *image_root, const char *local, bool force_local) {
+ const char *p;
+ int r;
+
+ assert(final);
+ assert(local);
+
+ if (!image_root)
+ image_root = "/var/lib/machines";
+
+ p = strappenda(image_root, "/", local);
+
+ if (force_local) {
+ (void) btrfs_subvol_remove(p);
+ (void) rm_rf_dangerous(p, false, true, false);
+ }
+
+ r = btrfs_subvol_snapshot(final, p, false, false);
+ if (r == -ENOTTY) {
+ r = copy_tree(final, p, false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to copy image: %m");
+ } else if (r < 0)
+ return log_error_errno(r, "Failed to create local image: %m");
+
+ log_info("Created new local image '%s'.", local);
+
+ return 0;
+}
+
+int import_make_read_only(const char *path) {
+ int r;
+
+ r = btrfs_subvol_set_read_only(path, true);
+ if (r == -ENOTTY) {
+ struct stat st;
+
+ r = stat(path, &st);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to stat temporary image: %m");
+
+ if (chmod(path, st.st_mode & 0755) < 0)
+ return log_error_errno(errno, "Failed to chmod() final image: %m");
+
+ return 0;
+ }
+ if (r < 0)
+ return log_error_errno(r, "Failed to mark final image read-only: %m");
+
+ return 0;
+}
+
+int import_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;
+ char *path;
+
+ assert(url);
+ assert(ret);
+
+ if (!image_root)
+ image_root = "/var/lib/machines";
+
+ escaped_url = xescape(url, FILENAME_ESCAPE);
+ if (!escaped_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);
+ if (!path)
+ return -ENOMEM;
+
+ *ret = path;
+ return 0;
+}
diff --git a/src/import/import-util.h b/src/import/import-util.h
new file mode 100644
index 0000000000..ad5ab502ae
--- /dev/null
+++ b/src/import/import-util.h
@@ -0,0 +1,31 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2015 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+
+bool http_etag_is_valid(const char *etag);
+
+int import_make_local_copy(const char *final, const char *root, const char *local, bool force_local);
+int import_find_old_etags(const char *url, const char *root, int dt, const char *prefix, const char *suffix, char ***etags);
+int import_make_read_only(const char *path);
+int import_make_path(const char *url, const char *etag, const char *image_root, const char *prefix, const char *suffix, char **ret);
diff --git a/src/import/import.c b/src/import/import.c
index 9b10de5559..c0fc22427e 100644
--- a/src/import/import.c
+++ b/src/import/import.c
@@ -25,6 +25,8 @@
#include "event-util.h"
#include "verbs.h"
#include "build.h"
+#include "machine-image.h"
+#include "import-tar.h"
#include "import-raw.h"
#include "import-dkr.h"
@@ -33,6 +35,144 @@ static const char *arg_image_root = "/var/lib/machines";
static const char* arg_dkr_index_url = DEFAULT_DKR_INDEX_URL;
+static void on_tar_finished(TarImport *import, int error, void *userdata) {
+ sd_event *event = userdata;
+ assert(import);
+
+ if (error == 0)
+ log_info("Operation completed successfully.");
+ else
+ log_error_errno(error, "Operation failed: %m");
+
+ sd_event_exit(event, error);
+}
+
+static int url_final_component(const char *url, char **ret) {
+ const char *e, *p;
+ char *s;
+
+ e = strchrnul(url, '?');
+
+ while (e > url && e[-1] == '/')
+ e--;
+
+ p = e;
+ while (p > url && p[-1] != '/')
+ p--;
+
+ if (e <= p)
+ return -EINVAL;
+
+ s = strndup(p, e - p);
+ if (!s)
+ return -ENOMEM;
+
+ *ret = s;
+ return 0;
+}
+
+static int strip_tar_suffixes(const char *name, char **ret) {
+ const char *e;
+ char *s;
+
+ e = endswith(name, ".tar");
+ if (!e)
+ e = endswith(name, ".tar.gz");
+ if (!e)
+ e = endswith(name, ".tar.xz");
+ if (!e)
+ e = endswith(name, ".tgz");
+ if (!e)
+ e = strchr(name, 0);
+
+ if (e <= name)
+ return -EINVAL;
+
+ s = strndup(name, e - name);
+ if (!s)
+ return -ENOMEM;
+
+ *ret = s;
+ return 0;
+}
+
+static int pull_tar(int argc, char *argv[], void *userdata) {
+ _cleanup_(tar_import_unrefp) TarImport *import = NULL;
+ _cleanup_event_unref_ 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 = url_final_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 = strip_tar_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(local, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local);
+ else if (r > 0) {
+ log_error_errno(EEXIST, "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, SIGTERM, SIGINT, -1) == 0);
+ sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
+ sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
+
+ r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event);
+ if (r < 0)
+ return log_error_errno(r, "Failed to allocate importer: %m");
+
+ r = tar_import_pull(import, url, local, arg_force);
+ 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 0;
+}
+
static void on_raw_finished(RawImport *import, int error, void *userdata) {
sd_event *event = userdata;
assert(import);
@@ -40,7 +180,7 @@ static void on_raw_finished(RawImport *import, int error, void *userdata) {
if (error == 0)
log_info("Operation completed successfully.");
else
- log_info_errno(error, "Operation failed: %m");
+ log_error_errno(error, "Operation failed: %m");
sd_event_exit(event, error);
}
@@ -173,7 +313,7 @@ static void on_dkr_finished(DkrImport *import, int error, void *userdata) {
if (error == 0)
log_info("Operation completed successfully.");
else
- log_info_errno(error, "Operation failed: %m");
+ log_error_errno(error, "Operation failed: %m");
sd_event_exit(event, error);
}
@@ -277,8 +417,9 @@ static int help(int argc, char *argv[], void *userdata) {
" --image-root= Image root directory\n"
" --dkr-index-url=URL Specify index URL to use for downloads\n\n"
"Commands:\n"
- " pull-dkr REMOTE [NAME] Download a DKR image\n"
- " pull-raw URL [NAME] Download a RAW image\n",
+ " pull-tar URL Download a TAR image\n"
+ " pull-raw URL [NAME] Download a RAW image\n"
+ " pull-dkr REMOTE [NAME] Download a DKR image\n",
program_invocation_short_name);
return 0;
@@ -350,8 +491,9 @@ static int import_main(int argc, char *argv[]) {
static const Verb verbs[] = {
{ "help", VERB_ANY, VERB_ANY, 0, help },
- { "pull-dkr", 2, 3, 0, pull_dkr },
+ { "pull-tar", 2, 3, 0, pull_tar },
{ "pull-raw", 2, 3, 0, pull_raw },
+ { "pull-dkr", 2, 3, 0, pull_dkr },
{}
};
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-24 20:09:52 +0000