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Refactor zipalign to allow unit tests 

Test: Self-tested
Bug: NA
Change-Id: If5e42735853e1508fbeb9fb420a9a9f129c2218f
This commit is contained in:
Fabien Sanglard 2020-10-22 17:58:12 -07:00
parent baade4a3c4
commit d4f71a97bd
8 changed files with 246 additions and 121 deletions
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38
tools/zipalign/Android.bp
View File

@ -4,8 +4,8 @@
// Zip alignment tool
//
cc_binary_host {
name: "zipalign",
cc_library_host_static {
name: "libzipalign",
srcs: [
"ZipAlign.cpp",
@ -13,11 +13,15 @@ cc_binary_host {
"ZipFile.cpp",
],
export_include_dirs: [
"include",
],
cflags: ["-Wall", "-Werror"],
// NOTE: Do not add any shared_libs dependencies because they will break the
// static_sdk_tools target.
static_libs: [
whole_static_libs: [
"libutils",
"libcutils",
"liblog",
@ -34,3 +38,31 @@ cc_binary_host {
},
},
}
cc_binary_host {
name: "zipalign",
srcs: [
"ZipAlignMain.cpp",
],
cflags: ["-Wall", "-Werror"],
static_libs: [
"libzipalign",
]
}
cc_test_host {
name: "zipalign_tests",
srcs: [
"tests/src/*_test.cpp",
],
static_libs: [
"libzipalign",
"libgmock",
],
data: [
"tests/data/unaligned.zip",
],
}

118
tools/zipalign/ZipAlign.cpp
View File

@ -14,35 +14,13 @@
* limitations under the License.
*/
/*
* Zip alignment tool
*/
#include "ZipFile.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
using namespace android;
/*
* Show program usage.
*/
void usage(void)
{
fprintf(stderr, "Zip alignment utility\n");
fprintf(stderr, "Copyright (C) 2009 The Android Open Source Project\n\n");
fprintf(stderr,
"Usage: zipalign [-f] [-p] [-v] [-z] <align> infile.zip outfile.zip\n"
" zipalign -c [-p] [-v] <align> infile.zip\n\n" );
fprintf(stderr,
" <align>: alignment in bytes, e.g. '4' provides 32-bit alignment\n");
fprintf(stderr, " -c: check alignment only (does not modify file)\n");
fprintf(stderr, " -f: overwrite existing outfile.zip\n");
fprintf(stderr, " -p: memory page alignment for stored shared object files\n");
fprintf(stderr, " -v: verbose output\n");
fprintf(stderr, " -z: recompress using Zopfli\n");
}
namespace android {
static int getAlignment(bool pageAlignSharedLibs, int defaultAlignment,
ZipEntry* pEntry) {
@ -126,7 +104,7 @@ static int copyAndAlign(ZipFile* pZin, ZipFile* pZout, int alignment, bool zopfl
* Process a file. We open the input and output files, failing if the
* output file exists and "force" wasn't specified.
*/
static int process(const char* inFileName, const char* outFileName,
int process(const char* inFileName, const char* outFileName,
int alignment, bool force, bool zopfli, bool pageAlignSharedLibs)
{
ZipFile zin, zout;
@ -169,7 +147,7 @@ static int process(const char* inFileName, const char* outFileName,
/*
* Verify the alignment of a zip archive.
*/
static int verify(const char* fileName, int alignment, bool verbose,
int verify(const char* fileName, int alignment, bool verbose,
bool pageAlignSharedLibs)
{
ZipFile zipFile;
@ -218,92 +196,4 @@ static int verify(const char* fileName, int alignment, bool verbose,
return foundBad ? 1 : 0;
}
/*
* Parse args.
*/
int main(int argc, char* const argv[])
{
bool wantUsage = false;
bool check = false;
bool force = false;
bool verbose = false;
bool zopfli = false;
bool pageAlignSharedLibs = false;
int result = 1;
int alignment;
char* endp;
if (argc < 4) {
wantUsage = true;
goto bail;
}
argc--;
argv++;
while (argc && argv[0][0] == '-') {
const char* cp = argv[0] +1;
while (*cp != '\0') {
switch (*cp) {
case 'c':
check = true;
break;
case 'f':
force = true;
break;
case 'v':
verbose = true;
break;
case 'z':
zopfli = true;
break;
case 'p':
pageAlignSharedLibs = true;
break;
default:
fprintf(stderr, "ERROR: unknown flag -%c\n", *cp);
wantUsage = true;
goto bail;
}
cp++;
}
argc--;
argv++;
}
if (!((check && argc == 2) || (!check && argc == 3))) {
wantUsage = true;
goto bail;
}
alignment = strtol(argv[0], &endp, 10);
if (*endp != '\0' || alignment <= 0) {
fprintf(stderr, "Invalid value for alignment: %s\n", argv[0]);
wantUsage = true;
goto bail;
}
if (check) {
/* check existing archive for correct alignment */
result = verify(argv[1], alignment, verbose, pageAlignSharedLibs);
} else {
/* create the new archive */
result = process(argv[1], argv[2], alignment, force, zopfli, pageAlignSharedLibs);
/* trust, but verify */
if (result == 0) {
result = verify(argv[2], alignment, verbose, pageAlignSharedLibs);
}
}
bail:
if (wantUsage) {
usage();
result = 2;
}
return result;
}
} // namespace android

136
tools/zipalign/ZipAlignMain.cpp Normal file
View File

@ -0,0 +1,136 @@
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Zip alignment tool
*/
#include "ZipAlign.h"
#include <stdio.h>
#include <stdlib.h>
using namespace android;
/*
* Show program usage.
*/
void usage(void)
{
fprintf(stderr, "Zip alignment utility\n");
fprintf(stderr, "Copyright (C) 2009 The Android Open Source Project\n\n");
fprintf(stderr,
"Usage: zipalign [-f] [-p] [-v] [-z] <align> infile.zip outfile.zip\n"
" zipalign -c [-p] [-v] <align> infile.zip\n\n" );
fprintf(stderr,
" <align>: alignment in bytes, e.g. '4' provides 32-bit alignment\n");
fprintf(stderr, " -c: check alignment only (does not modify file)\n");
fprintf(stderr, " -f: overwrite existing outfile.zip\n");
fprintf(stderr, " -p: memory page alignment for stored shared object files\n");
fprintf(stderr, " -v: verbose output\n");
fprintf(stderr, " -z: recompress using Zopfli\n");
}
/*
* Parse args.
*/
int main(int argc, char* const argv[])
{
bool wantUsage = false;
bool check = false;
bool force = false;
bool verbose = false;
bool zopfli = false;
bool pageAlignSharedLibs = false;
int result = 1;
int alignment;
char* endp;
if (argc < 4) {
wantUsage = true;
goto bail;
}
argc--;
argv++;
while (argc && argv[0][0] == '-') {
const char* cp = argv[0] +1;
while (*cp != '\0') {
switch (*cp) {
case 'c':
check = true;
break;
case 'f':
force = true;
break;
case 'v':
verbose = true;
break;
case 'z':
zopfli = true;
break;
case 'p':
pageAlignSharedLibs = true;
break;
default:
fprintf(stderr, "ERROR: unknown flag -%c\n", *cp);
wantUsage = true;
goto bail;
}
cp++;
}
argc--;
argv++;
}
if (!((check && argc == 2) || (!check && argc == 3))) {
wantUsage = true;
goto bail;
}
alignment = strtol(argv[0], &endp, 10);
if (*endp != '\0' || alignment <= 0) {
fprintf(stderr, "Invalid value for alignment: %s\n", argv[0]);
wantUsage = true;
goto bail;
}
if (check) {
/* check existing archive for correct alignment */
result = verify(argv[1], alignment, verbose, pageAlignSharedLibs);
} else {
/* create the new archive */
result = process(argv[1], argv[2], alignment, force, zopfli, pageAlignSharedLibs);
/* trust, but verify */
if (result == 0) {
result = verify(argv[2], alignment, verbose, pageAlignSharedLibs);
}
}
bail:
if (wantUsage) {
usage();
result = 2;
}
return result;
}

4
tools/zipalign/ZipEntry.cpp
View File

@ -29,7 +29,7 @@
#include <string.h>
#include <time.h>
using namespace android;
namespace android {
/*
* Initialize a new ZipEntry structure from a FILE* positioned at a
@ -696,3 +696,5 @@ void ZipEntry::CentralDirEntry::dump(void) const
ALOGD(" comment: '%s'\n", mFileComment);
}
} // namespace android

7
tools/zipalign/ZipFile.cpp
View File

@ -35,7 +35,7 @@
#include <assert.h>
#include <inttypes.h>
using namespace android;
namespace android {
/*
* Some environments require the "b", some choke on it.
@ -134,7 +134,7 @@ status_t ZipFile::open(const char* zipFileName, int flags)
/*
* Return the Nth entry in the archive.
*/
android::ZipEntry* ZipFile::getEntryByIndex(int idx) const
ZipEntry* ZipFile::getEntryByIndex(int idx) const
{
if (idx < 0 || idx >= (int) mEntries.size())
return NULL;
@ -145,7 +145,7 @@ android::ZipEntry* ZipFile::getEntryByIndex(int idx) const
/*
* Find an entry by name.
*/
android::ZipEntry* ZipFile::getEntryByName(const char* fileName) const
ZipEntry* ZipFile::getEntryByName(const char* fileName) const
{
/*
* Do a stupid linear string-compare search.
@ -1397,3 +1397,4 @@ void ZipFile::EndOfCentralDir::dump(void) const
mCentralDirSize, mCentralDirOffset, mCommentLen);
}
} // namespace android

49
tools/zipalign/include/ZipAlign.h Normal file
View File

@ -0,0 +1,49 @@
/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ZIPALIGN_H
#define ZIPALIGN_H
namespace android {
/*
* Generate a new, aligned, zip "output" from an "input" zip.
* - alignTo: Alignment (in bytes) for uncompressed entries.
* - force : Overwrite output if it exists, fail otherwise.
* - zopfli : Recompress compressed entries with more efficient algorithm.
* Copy compressed entries as-is, and unaligned, otherwise.
* - pageAlignSharedLibs: Align .so files to 4096 and other files to
* alignTo, or all files to alignTo if false..
*
* Returns 0 on success.
*/
int process(const char* input, const char* output, int alignTo, bool force,
bool zopfli, bool pageAlignSharedLibs);
/*
* Verify the alignment of a zip archive.
* - alignTo: Alignment (in bytes) for uncompressed entries.
* - pageAlignSharedLibs: Align .so files to 4096 and other files to
* alignTo, or all files to alignTo if false..
*
* Returns 0 on success.
*/
int verify(const char* fileName, int alignTo, bool verbose,
bool pageAlignSharedLibs);
} // namespace android
#endif // ZIPALIGN_H

BIN
tools/zipalign/tests/data/unaligned.zip Normal file
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15
tools/zipalign/tests/src/align_test.cpp Normal file
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@ -0,0 +1,15 @@
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "ZipAlign.h"
#include <stdio.h>
using namespace android;
TEST(Align, Unaligned) {
const char* src = "tests/data/unaligned.zip";
const char* dst = "tests/data/unaligned_out.zip";
int result = process(src, dst, 4, true, false, 4096);
ASSERT_EQ(0, result);
}