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-rw-r--r--src/import/import-compress.c194
-rw-r--r--src/import/import-compress.h61
-rw-r--r--src/import/pull-job.c149
-rw-r--r--src/import/pull-job.h9
4 files changed, 268 insertions, 145 deletions
diff --git a/src/import/import-compress.c b/src/import/import-compress.c
new file mode 100644
index 0000000000..629605a44c
--- /dev/null
+++ b/src/import/import-compress.c
@@ -0,0 +1,194 @@
+/*-*- 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 "import-compress.h"
+
+void import_compress_free(ImportCompress *c) {
+ assert(c);
+
+ if (c->type == IMPORT_COMPRESS_XZ)
+ lzma_end(&c->xz);
+ else if (c->type == IMPORT_COMPRESS_GZIP)
+ inflateEnd(&c->gzip);
+ else if (c->type == IMPORT_COMPRESS_BZIP2)
+ BZ2_bzDecompressEnd(&c->bzip2);
+
+ c->type = IMPORT_COMPRESS_UNKNOWN;
+}
+
+int import_uncompress_detect(ImportCompress *c, const void *data, size_t size) {
+ 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'
+ };
+
+ int r;
+
+ assert(c);
+
+ if (c->type != IMPORT_COMPRESS_UNKNOWN)
+ return 1;
+
+ if (size < MAX3(sizeof(xz_signature),
+ sizeof(gzip_signature),
+ sizeof(bzip2_signature)))
+ return 0;
+
+ assert(data);
+
+ if (memcmp(data, xz_signature, sizeof(xz_signature)) == 0) {
+ lzma_ret xzr;
+
+ xzr = lzma_stream_decoder(&c->xz, UINT64_MAX, LZMA_TELL_UNSUPPORTED_CHECK);
+ if (xzr != LZMA_OK)
+ return -EIO;
+
+ c->type = IMPORT_COMPRESS_XZ;
+
+ } else if (memcmp(data, gzip_signature, sizeof(gzip_signature)) == 0) {
+ r = inflateInit2(&c->gzip, 15+16);
+ if (r != Z_OK)
+ return -EIO;
+
+ c->type = IMPORT_COMPRESS_GZIP;
+
+ } else if (memcmp(data, bzip2_signature, sizeof(bzip2_signature)) == 0) {
+ r = BZ2_bzDecompressInit(&c->bzip2, 0, 0);
+ if (r != BZ_OK)
+ return -EIO;
+
+ c->type = IMPORT_COMPRESS_BZIP2;
+ } else
+ c->type = IMPORT_COMPRESS_UNCOMPRESSED;
+
+ return 1;
+}
+
+int import_uncompress(ImportCompress *c, const void *data, size_t size, ImportCompressCallback callback, void *userdata) {
+ int r;
+
+ assert(c);
+ assert(callback);
+
+ r = import_uncompress_detect(c, data, size);
+ if (r <= 0)
+ return r;
+
+ if (size <= 0)
+ return 1;
+
+ assert(data);
+
+ switch (c->type) {
+
+ case IMPORT_COMPRESS_UNCOMPRESSED:
+ r = callback(data, size, userdata);
+ if (r < 0)
+ return r;
+
+ break;
+
+ case IMPORT_COMPRESS_XZ:
+ c->xz.next_in = data;
+ c->xz.avail_in = size;
+
+ while (c->xz.avail_in > 0) {
+ uint8_t buffer[16 * 1024];
+ lzma_ret lzr;
+
+ c->xz.next_out = buffer;
+ c->xz.avail_out = sizeof(buffer);
+
+ lzr = lzma_code(&c->xz, LZMA_RUN);
+ if (lzr != LZMA_OK && lzr != LZMA_STREAM_END)
+ return -EIO;
+
+ r = callback(buffer, sizeof(buffer) - c->xz.avail_out, userdata);
+ if (r < 0)
+ return r;
+ }
+
+ break;
+
+ case IMPORT_COMPRESS_GZIP:
+ c->gzip.next_in = (void*) data;
+ c->gzip.avail_in = size;
+
+ while (c->gzip.avail_in > 0) {
+ uint8_t buffer[16 * 1024];
+
+ c->gzip.next_out = buffer;
+ c->gzip.avail_out = sizeof(buffer);
+
+ r = inflate(&c->gzip, Z_NO_FLUSH);
+ if (r != Z_OK && r != Z_STREAM_END)
+ return -EIO;
+
+ r = callback(buffer, sizeof(buffer) - c->gzip.avail_out, userdata);
+ if (r < 0)
+ return r;
+ }
+
+ break;
+
+ case IMPORT_COMPRESS_BZIP2:
+ c->bzip2.next_in = (void*) data;
+ c->bzip2.avail_in = size;
+
+ while (c->bzip2.avail_in > 0) {
+ uint8_t buffer[16 * 1024];
+
+ c->bzip2.next_out = (char*) buffer;
+ c->bzip2.avail_out = sizeof(buffer);
+
+ r = BZ2_bzDecompress(&c->bzip2);
+ if (r != BZ_OK && r != BZ_STREAM_END)
+ return -EIO;
+
+ r = callback(buffer, sizeof(buffer) - c->bzip2.avail_out, userdata);
+ if (r < 0)
+ return r;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Unknown compression");
+ }
+
+ return 1;
+}
+
+static const char* const import_compress_type_table[_IMPORT_COMPRESS_TYPE_MAX] = {
+ [IMPORT_COMPRESS_UNKNOWN] = "unknown",
+ [IMPORT_COMPRESS_UNCOMPRESSED] = "uncompressed",
+ [IMPORT_COMPRESS_XZ] = "xz",
+ [IMPORT_COMPRESS_GZIP] = "gzip",
+ [IMPORT_COMPRESS_BZIP2] = "bzip2",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(import_compress_type, ImportCompressType);
diff --git a/src/import/import-compress.h b/src/import/import-compress.h
new file mode 100644
index 0000000000..4f97f20b45
--- /dev/null
+++ b/src/import/import-compress.h
@@ -0,0 +1,61 @@
+/*-*- 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 <sys/types.h>
+
+#include <lzma.h>
+#include <zlib.h>
+#include <bzlib.h>
+
+#include "macro.h"
+
+typedef enum ImportCompressType {
+ IMPORT_COMPRESS_UNKNOWN,
+ IMPORT_COMPRESS_UNCOMPRESSED,
+ IMPORT_COMPRESS_XZ,
+ IMPORT_COMPRESS_GZIP,
+ IMPORT_COMPRESS_BZIP2,
+ _IMPORT_COMPRESS_TYPE_MAX,
+ _IMPORT_COMPRESS_TYPE_INVALID = -1,
+} ImportCompressType;
+
+typedef struct ImportCompress {
+ ImportCompressType type;
+
+ union {
+ lzma_stream xz;
+ z_stream gzip;
+ bz_stream bzip2;
+ };
+} ImportCompress;
+
+typedef int (*ImportCompressCallback)(const void *data, size_t size, void *userdata);
+
+void import_compress_free(ImportCompress *c);
+
+int import_uncompress_detect(ImportCompress *c, const void *data, size_t size);
+
+int import_uncompress(ImportCompress *c, const void *data, size_t size, ImportCompressCallback callback, void *userdata);
+
+const char* import_compress_type_to_string(ImportCompressType t) _const_;
+ImportCompressType import_compress_type_from_string(const char *s) _pure_;
diff --git a/src/import/pull-job.c b/src/import/pull-job.c
index 165dae6619..b5237449c9 100644
--- a/src/import/pull-job.c
+++ b/src/import/pull-job.c
@@ -37,12 +37,7 @@ PullJob* pull_job_unref(PullJob *j) {
safe_close(j->disk_fd);
- if (j->compressed == PULL_JOB_XZ)
- lzma_end(&j->xz);
- else if (j->compressed == PULL_JOB_GZIP)
- inflateEnd(&j->gzip);
- else if (j->compressed == PULL_JOB_BZIP2)
- BZ2_bzDecompressEnd(&j->bzip2);
+ import_compress_free(&j->compress);
if (j->checksum_context)
gcry_md_close(j->checksum_context);
@@ -180,7 +175,8 @@ finish:
pull_job_finish(j, r);
}
-static int pull_job_write_uncompressed(PullJob *j, void *p, size_t sz) {
+static int pull_job_write_uncompressed(const void *p, size_t sz, void *userdata) {
+ PullJob *j = userdata;
ssize_t n;
assert(j);
@@ -261,88 +257,9 @@ static int pull_job_write_compressed(PullJob *j, void *p, size_t sz) {
if (j->checksum_context)
gcry_md_write(j->checksum_context, p, sz);
- switch (j->compressed) {
-
- case PULL_JOB_UNCOMPRESSED:
- r = pull_job_write_uncompressed(j, p, sz);
- if (r < 0)
- return r;
-
- break;
-
- case PULL_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 = pull_job_write_uncompressed(j, buffer, sizeof(buffer) - j->xz.avail_out);
- if (r < 0)
- return r;
- }
-
- break;
-
- case PULL_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 = pull_job_write_uncompressed(j, buffer, sizeof(buffer) - j->gzip.avail_out);
- if (r < 0)
- return r;
- }
-
- break;
-
- case PULL_JOB_BZIP2:
- j->bzip2.next_in = p;
- j->bzip2.avail_in = sz;
-
- while (j->bzip2.avail_in > 0) {
- uint8_t buffer[16 * 1024];
-
- j->bzip2.next_out = (char*) buffer;
- j->bzip2.avail_out = sizeof(buffer);
-
- r = BZ2_bzDecompress(&j->bzip2);
- if (r != BZ_OK && r != BZ_STREAM_END) {
- log_error("Decompression error.");
- return -EIO;
- }
-
- r = pull_job_write_uncompressed(j, buffer, sizeof(buffer) - j->bzip2.avail_out);
- if (r < 0)
- return r;
- }
-
- break;
-
- default:
- assert_not_reached("Unknown compression");
- }
+ r = import_uncompress(&j->compress, p, sz, pull_job_write_uncompressed, j);
+ if (r < 0)
+ return r;
j->written_compressed += sz;
@@ -384,16 +301,6 @@ static int pull_job_open_disk(PullJob *j) {
}
static int pull_job_detect_compression(PullJob *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;
@@ -401,47 +308,13 @@ static int pull_job_detect_compression(PullJob *j) {
assert(j);
- if (j->payload_size < MAX3(sizeof(xz_signature),
- sizeof(gzip_signature),
- sizeof(bzip2_signature)))
+ r = import_uncompress_detect(&j->compress, j->payload, j->payload_size);
+ if (r < 0)
+ return log_error_errno(r, "Failed to initialize compressor: %m");
+ if (r == 0)
return 0;
- if (memcmp(j->payload, xz_signature, sizeof(xz_signature)) == 0)
- j->compressed = PULL_JOB_XZ;
- else if (memcmp(j->payload, gzip_signature, sizeof(gzip_signature)) == 0)
- j->compressed = PULL_JOB_GZIP;
- else if (memcmp(j->payload, bzip2_signature, sizeof(bzip2_signature)) == 0)
- j->compressed = PULL_JOB_BZIP2;
- else
- j->compressed = PULL_JOB_UNCOMPRESSED;
-
- log_debug("Stream is XZ compressed: %s", yes_no(j->compressed == PULL_JOB_XZ));
- log_debug("Stream is GZIP compressed: %s", yes_no(j->compressed == PULL_JOB_GZIP));
- log_debug("Stream is BZIP2 compressed: %s", yes_no(j->compressed == PULL_JOB_BZIP2));
-
- if (j->compressed == PULL_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 == PULL_JOB_GZIP) {
- r = inflateInit2(&j->gzip, 15+16);
- if (r != Z_OK) {
- log_error("Failed to initialize gzip decoder.");
- return -EIO;
- }
- }
- if (j->compressed == PULL_JOB_BZIP2) {
- r = BZ2_bzDecompressInit(&j->bzip2, 0, 0);
- if (r != BZ_OK) {
- log_error("Failed to initialize bzip2 decoder.");
- return -EIO;
- }
- }
+ log_debug("Stream is compressed: %s", import_compress_type_to_string(j->compress.type));
r = pull_job_open_disk(j);
if (r < 0)
diff --git a/src/import/pull-job.h b/src/import/pull-job.h
index b807bd1b41..3239aeac20 100644
--- a/src/import/pull-job.h
+++ b/src/import/pull-job.h
@@ -21,13 +21,11 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <lzma.h>
-#include <zlib.h>
-#include <bzlib.h>
#include <gcrypt.h>
#include "macro.h"
#include "curl-util.h"
+#include "import-compress.h"
typedef struct PullJob PullJob;
@@ -92,10 +90,7 @@ struct PullJob {
usec_t mtime;
- PullJobCompression compressed;
- lzma_stream xz;
- z_stream gzip;
- bz_stream bzip2;
+ ImportCompress compress;
unsigned progress_percent;
usec_t start_usec;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-04 10:15:16 +0000