import: add support for pulling raw tar balls as containers

Ubuntu provides their cloud images optionally as tarball, hence also
support downloading those.

1 files changed, 101 insertions, 0 deletions

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);