svn commit: r191594 - in head/lib/libarchive: . test
Tim Kientzle
kientzle at FreeBSD.org
Mon Apr 27 20:09:06 UTC 2009
Author: kientzle
Date: Mon Apr 27 20:09:05 2009
New Revision: 191594
URL: http://svn.freebsd.org/changeset/base/191594
Log:
Merge r990,r1044 from libarchive.googlecode.com:
read_support_format_raw() allows people to exploit libarchive's
automatic decompression support by simply stubbing out the
archive format handler.
The raw handler is not enabled by support_format_all(), of course.
It bids 1 on any non-empty input and always returns a single
entry named "data" with no properties set.
Added:
head/lib/libarchive/archive_read_support_format_raw.c (contents, props changed)
head/lib/libarchive/test/test_read_format_raw.c (contents, props changed)
head/lib/libarchive/test/test_read_format_raw.data.Z.uu (contents, props changed)
head/lib/libarchive/test/test_read_format_raw.data.uu (contents, props changed)
Modified:
head/lib/libarchive/Makefile
head/lib/libarchive/archive.h
head/lib/libarchive/test/Makefile
Modified: head/lib/libarchive/Makefile
==============================================================================
--- head/lib/libarchive/Makefile Mon Apr 27 19:39:18 2009 (r191593)
+++ head/lib/libarchive/Makefile Mon Apr 27 20:09:05 2009 (r191594)
@@ -52,6 +52,7 @@ SRCS= archive_check_magic.c \
archive_read_support_format_empty.c \
archive_read_support_format_iso9660.c \
archive_read_support_format_mtree.c \
+ archive_read_support_format_raw.c \
archive_read_support_format_tar.c \
archive_read_support_format_zip.c \
archive_string.c \
Modified: head/lib/libarchive/archive.h
==============================================================================
--- head/lib/libarchive/archive.h Mon Apr 27 19:39:18 2009 (r191593)
+++ head/lib/libarchive/archive.h Mon Apr 27 20:09:05 2009 (r191594)
@@ -272,6 +272,7 @@ typedef int archive_close_callback(struc
#define ARCHIVE_FORMAT_AR_GNU (ARCHIVE_FORMAT_AR | 1)
#define ARCHIVE_FORMAT_AR_BSD (ARCHIVE_FORMAT_AR | 2)
#define ARCHIVE_FORMAT_MTREE 0x80000
+#define ARCHIVE_FORMAT_RAW 0x90000
/*-
* Basic outline for reading an archive:
@@ -315,6 +316,7 @@ __LA_DECL int archive_read_support_for
__LA_DECL int archive_read_support_format_gnutar(struct archive *);
__LA_DECL int archive_read_support_format_iso9660(struct archive *);
__LA_DECL int archive_read_support_format_mtree(struct archive *);
+__LA_DECL int archive_read_support_format_raw(struct archive *);
__LA_DECL int archive_read_support_format_tar(struct archive *);
__LA_DECL int archive_read_support_format_zip(struct archive *);
Added: head/lib/libarchive/archive_read_support_format_raw.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lib/libarchive/archive_read_support_format_raw.c Mon Apr 27 20:09:05 2009 (r191594)
@@ -0,0 +1,187 @@
+/*-
+ * Copyright (c) 2003-2009 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "archive_platform.h"
+__FBSDID("$FreeBSD$");
+
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#include "archive.h"
+#include "archive_entry.h"
+#include "archive_private.h"
+#include "archive_read_private.h"
+
+struct raw_info {
+ int64_t offset; /* Current position in the file. */
+ int end_of_file;
+};
+
+static int archive_read_format_raw_bid(struct archive_read *);
+static int archive_read_format_raw_cleanup(struct archive_read *);
+static int archive_read_format_raw_read_data(struct archive_read *,
+ const void **, size_t *, off_t *);
+static int archive_read_format_raw_read_data_skip(struct archive_read *);
+static int archive_read_format_raw_read_header(struct archive_read *,
+ struct archive_entry *);
+
+int
+archive_read_support_format_raw(struct archive *_a)
+{
+ struct raw_info *info;
+ struct archive_read *a = (struct archive_read *)_a;
+ int r;
+
+ info = (struct raw_info *)calloc(1, sizeof(*info));
+ if (info == NULL) {
+ archive_set_error(&a->archive, ENOMEM,
+ "Can't allocate raw_info data");
+ return (ARCHIVE_FATAL);
+ }
+
+ r = __archive_read_register_format(a,
+ info,
+ "raw",
+ archive_read_format_raw_bid,
+ NULL,
+ archive_read_format_raw_read_header,
+ archive_read_format_raw_read_data,
+ archive_read_format_raw_read_data_skip,
+ archive_read_format_raw_cleanup);
+ if (r != ARCHIVE_OK)
+ free(info);
+ return (r);
+}
+
+/*
+ * Bid 1 if this is a non-empty file. Anyone who can really support
+ * this should outbid us, so it should generally be safe to use "raw"
+ * in conjunction with other formats. But, this could really confuse
+ * folks if there are bid errors or minor file damage, so we don't
+ * include "raw" as part of support_format_all().
+ */
+static int
+archive_read_format_raw_bid(struct archive_read *a)
+{
+ const char *p;
+
+ if ((p = __archive_read_ahead(a, 1, NULL)) == NULL)
+ return (-1);
+ return (1);
+}
+
+/*
+ * Mock up a fake header.
+ */
+static int
+archive_read_format_raw_read_header(struct archive_read *a,
+ struct archive_entry *entry)
+{
+ struct raw_info *info;
+
+ info = (struct raw_info *)(a->format->data);
+ if (info->end_of_file)
+ return (ARCHIVE_EOF);
+
+ a->archive.archive_format = ARCHIVE_FORMAT_RAW;
+ a->archive.archive_format_name = "Raw data";
+ archive_entry_set_pathname(entry, "data");
+ /* XXX should we set mode to mimic a regular file? XXX */
+ /* I'm deliberately leaving most fields unset here. */
+ return (ARCHIVE_OK);
+}
+
+static int
+archive_read_format_raw_read_data(struct archive_read *a,
+ const void **buff, size_t *size, off_t *offset)
+{
+ struct raw_info *info;
+ ssize_t avail;
+
+ info = (struct raw_info *)(a->format->data);
+ if (info->end_of_file)
+ return (ARCHIVE_EOF);
+
+ /* Get whatever bytes are immediately available. */
+ *buff = __archive_read_ahead(a, 1, &avail);
+ if (avail > 0) {
+ /* Consume and return the bytes we just read */
+ __archive_read_consume(a, avail);
+ *size = avail;
+ *offset = info->offset;
+ info->offset += *size;
+ return (ARCHIVE_OK);
+ } else if (0 == avail) {
+ /* Record and return end-of-file. */
+ info->end_of_file = 1;
+ *size = 0;
+ *offset = info->offset;
+ return (ARCHIVE_EOF);
+ } else {
+ /* Record and return an error. */
+ *size = 0;
+ *offset = info->offset;
+ return (avail);
+ }
+ return (ARCHIVE_OK);
+}
+
+static int
+archive_read_format_raw_read_data_skip(struct archive_read *a)
+{
+ struct raw_info *info;
+ off_t bytes_skipped;
+ int64_t request = 1024 * 1024 * 1024UL; /* Skip 1 GB at a time. */
+
+ info = (struct raw_info *)(a->format->data);
+ if (info->end_of_file)
+ return (ARCHIVE_EOF);
+ info->end_of_file = 1;
+
+ for (;;) {
+ bytes_skipped = __archive_read_skip_lenient(a, request);
+ if (bytes_skipped < 0)
+ return (ARCHIVE_FATAL);
+ if (bytes_skipped < request)
+ return (ARCHIVE_OK);
+ /* We skipped all the bytes we asked for. There might
+ * be more, so try again. */
+ }
+}
+
+static int
+archive_read_format_raw_cleanup(struct archive_read *a)
+{
+ struct raw_info *info;
+
+ info = (struct raw_info *)(a->format->data);
+ free(info);
+ a->format->data = NULL;
+ return (ARCHIVE_OK);
+}
Modified: head/lib/libarchive/test/Makefile
==============================================================================
--- head/lib/libarchive/test/Makefile Mon Apr 27 19:39:18 2009 (r191593)
+++ head/lib/libarchive/test/Makefile Mon Apr 27 20:09:05 2009 (r191594)
@@ -55,6 +55,7 @@ TESTS= \
test_read_format_isorr_bz2.c \
test_read_format_mtree.c \
test_read_format_pax_bz2.c \
+ test_read_format_raw.c \
test_read_format_tar.c \
test_read_format_tar_empty_filename.c \
test_read_format_tbz.c \
@@ -118,8 +119,8 @@ CFLAGS+= -I${LA_SRCDIR} -I.
#LDADD+= -L/usr/local/lib -llzmadec
# Uncomment to build and test lzma and xz support via liblzma
-CFLAGS+= -I/usr/local/include -DHAVE_LIBLZMA=1 -DHAVE_LZMA_H=1
-LDADD+= -L/usr/local/lib -llzma
+#CFLAGS+= -I/usr/local/include -DHAVE_LIBLZMA=1 -DHAVE_LZMA_H=1
+#LDADD+= -L/usr/local/lib -llzma
# Uncomment to link against dmalloc
#LDADD+= -L/usr/local/lib -ldmalloc
Added: head/lib/libarchive/test/test_read_format_raw.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lib/libarchive/test/test_read_format_raw.c Mon Apr 27 20:09:05 2009 (r191594)
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 2007 Kai Wang
+ * Copyright (c) 2007 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "test.h"
+__FBSDID("$FreeBSD$");
+
+DEFINE_TEST(test_read_format_raw)
+{
+ char buff[512];
+ struct archive_entry *ae;
+ struct archive *a;
+ const char *reffile1 = "test_read_format_raw.data";
+ const char *reffile2 = "test_read_format_raw.data.Z";
+
+ /* First, try pulling data out of an uninterpretable file. */
+ extract_reference_file(reffile1);
+ assert((a = archive_read_new()) != NULL);
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_support_compression_all(a));
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_raw(a));
+ assertEqualIntA(a, ARCHIVE_OK,
+ archive_read_open_filename(a, reffile1, 512));
+
+ /* First (and only!) Entry */
+ assertA(0 == archive_read_next_header(a, &ae));
+ assertEqualString("data", archive_entry_pathname(ae));
+ /* Most fields should be unset (unknown) */
+ assert(!archive_entry_size_is_set(ae));
+ assert(!archive_entry_atime_is_set(ae));
+ assert(!archive_entry_ctime_is_set(ae));
+ assert(!archive_entry_mtime_is_set(ae));
+ assertEqualInt(4, archive_read_data(a, buff, 32));
+ assertEqualMem(buff, "foo\n", 4);
+
+ /* Test EOF */
+ assertEqualIntA(a, ARCHIVE_EOF, archive_read_next_header(a, &ae));
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
+ assertEqualInt(ARCHIVE_OK, archive_read_finish(a));
+
+
+ /* Second, try the same with a compressed file. */
+ extract_reference_file(reffile2);
+ assert((a = archive_read_new()) != NULL);
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_support_compression_all(a));
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_raw(a));
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
+ assertEqualIntA(a, ARCHIVE_OK,
+ archive_read_open_filename(a, reffile2, 1));
+
+ /* First (and only!) Entry */
+ assertA(0 == archive_read_next_header(a, &ae));
+ assertEqualString("data", archive_entry_pathname(ae));
+ /* Most fields should be unset (unknown) */
+ assert(!archive_entry_size_is_set(ae));
+ assert(!archive_entry_atime_is_set(ae));
+ assert(!archive_entry_ctime_is_set(ae));
+ assert(!archive_entry_mtime_is_set(ae));
+ assertEqualInt(4, archive_read_data(a, buff, 32));
+ assertEqualMem(buff, "foo\n", 4);
+
+ /* Test EOF */
+ assertEqualIntA(a, ARCHIVE_EOF, archive_read_next_header(a, &ae));
+ assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
+ assertEqualInt(ARCHIVE_OK, archive_read_finish(a));
+}
Added: head/lib/libarchive/test/test_read_format_raw.data.Z.uu
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lib/libarchive/test/test_read_format_raw.data.Z.uu Mon Apr 27 20:09:05 2009 (r191594)
@@ -0,0 +1,5 @@
+$FreeBSD$
+begin 644 test_read_format_raw.data.Z
+('YV09MZ\40``
+`
+end
Added: head/lib/libarchive/test/test_read_format_raw.data.uu
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/lib/libarchive/test/test_read_format_raw.data.uu Mon Apr 27 20:09:05 2009 (r191594)
@@ -0,0 +1,5 @@
+$FreeBSD$
+begin 644 test_read_format_raw.data
+$9F]O"@``
+`
+end
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