/*
* Copyright (C) 2016 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 agree 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.
*/
#include <fcntl.h>
#include <gtest/gtest.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/types.h>
#include <time.h>
#include <string>
#include <android-base/file.h>
#include <android-base/stringprintf.h>
#include <android-base/test_utils.h>
#include "applypatch/applypatch.h"
#include "common/test_constants.h"
#include "openssl/sha.h"
#include "print_sha1.h"
static const std::string DATA_PATH = getenv("ANDROID_DATA");
static const std::string TESTDATA_PATH = "/recovery/testdata";
static const std::string WORK_FS = "/data";
static std::string sha1sum(const std::string& fname) {
uint8_t digest[SHA_DIGEST_LENGTH];
std::string data;
android::base::ReadFileToString(fname, &data);
SHA1((const uint8_t*)data.c_str(), data.size(), digest);
return print_sha1(digest);
}
static void mangle_file(const std::string& fname) {
FILE* fh = fopen(&fname[0], "w");
int r;
for (int i=0; i < 1024; i++) {
r = rand();
fwrite(&r, sizeof(short), 1, fh);
}
fclose(fh);
}
static bool file_cmp(std::string& f1, std::string& f2) {
std::string c1;
std::string c2;
android::base::ReadFileToString(f1, &c1);
android::base::ReadFileToString(f2, &c2);
return c1 == c2;
}
static std::string from_testdata_base(const std::string fname) {
return android::base::StringPrintf("%s%s%s/%s",
&DATA_PATH[0],
&NATIVE_TEST_PATH[0],
&TESTDATA_PATH[0],
&fname[0]);
}
class ApplyPatchTest : public ::testing::Test {
public:
static void SetUpTestCase() {
// set up files
old_file = from_testdata_base("old.file");
new_file = from_testdata_base("new.file");
patch_file = from_testdata_base("patch.bsdiff");
rand_file = "/cache/applypatch_test_rand.file";
cache_file = "/cache/saved.file";
// write stuff to rand_file
android::base::WriteStringToFile("hello", rand_file);
// set up SHA constants
old_sha1 = sha1sum(old_file);
new_sha1 = sha1sum(new_file);
srand(time(NULL));
bad_sha1_a = android::base::StringPrintf("%040x", rand());
bad_sha1_b = android::base::StringPrintf("%040x", rand());
struct stat st;
stat(&new_file[0], &st);
new_size = st.st_size;
}
static std::string old_file;
static std::string new_file;
static std::string rand_file;
static std::string cache_file;
static std::string patch_file;
static std::string old_sha1;
static std::string new_sha1;
static std::string bad_sha1_a;
static std::string bad_sha1_b;
static size_t new_size;
};
std::string ApplyPatchTest::old_file;
std::string ApplyPatchTest::new_file;
static void cp(std::string src, std::string tgt) {
std::string cmd = android::base::StringPrintf("cp %s %s",
&src[0],
&tgt[0]);
system(&cmd[0]);
}
static void backup_old() {
cp(ApplyPatchTest::old_file, ApplyPatchTest::cache_file);
}
static void restore_old() {
cp(ApplyPatchTest::cache_file, ApplyPatchTest::old_file);
}
class ApplyPatchCacheTest : public ApplyPatchTest {
public:
virtual void SetUp() {
backup_old();
}
virtual void TearDown() {
restore_old();
}
};
class ApplyPatchFullTest : public ApplyPatchCacheTest {
public:
static void SetUpTestCase() {
ApplyPatchTest::SetUpTestCase();
unsigned long free_kb = FreeSpaceForFile(&WORK_FS[0]);
ASSERT_GE(free_kb * 1024, new_size * 3 / 2);
output_f = new TemporaryFile();
output_loc = std::string(output_f->path);
struct FileContents fc;
ASSERT_EQ(0, LoadFileContents(&rand_file[0], &fc));
Value* patch1 = new Value();
patch1->type = VAL_BLOB;
patch1->size = fc.data.size();
patch1->data = static_cast<char*>(malloc(fc.data.size()));
memcpy(patch1->data, fc.data.data(), fc.data.size());
patches.push_back(patch1);
ASSERT_EQ(0, LoadFileContents(&patch_file[0], &fc));
Value* patch2 = new Value();
patch2->type = VAL_BLOB;
patch2->size = fc.st.st_size;
patch2->data = static_cast<char*>(malloc(fc.data.size()));
memcpy(patch2->data, fc.data.data(), fc.data.size());
patches.push_back(patch2);
}
static void TearDownTestCase() {
delete output_f;
for (auto it = patches.begin(); it != patches.end(); ++it) {
free((*it)->data);
delete *it;
}
patches.clear();
}
static std::vector<Value*> patches;
static TemporaryFile* output_f;
static std::string output_loc;
};
class ApplyPatchDoubleCacheTest : public ApplyPatchFullTest {
public:
virtual void SetUp() {
ApplyPatchCacheTest::SetUp();
cp(cache_file, "/cache/reallysaved.file");
}
virtual void TearDown() {
cp("/cache/reallysaved.file", cache_file);
ApplyPatchCacheTest::TearDown();
}
};
std::string ApplyPatchTest::rand_file;
std::string ApplyPatchTest::patch_file;
std::string ApplyPatchTest::cache_file;
std::string ApplyPatchTest::old_sha1;
std::string ApplyPatchTest::new_sha1;
std::string ApplyPatchTest::bad_sha1_a;
std::string ApplyPatchTest::bad_sha1_b;
size_t ApplyPatchTest::new_size;
std::vector<Value*> ApplyPatchFullTest::patches;
TemporaryFile* ApplyPatchFullTest::output_f;
std::string ApplyPatchFullTest::output_loc;
TEST_F(ApplyPatchTest, CheckModeSingle) {
char* s = &old_sha1[0];
ASSERT_EQ(0, applypatch_check(&old_file[0], 1, &s));
}
TEST_F(ApplyPatchTest, CheckModeMultiple) {
char* argv[3] = {
&bad_sha1_a[0],
&old_sha1[0],
&bad_sha1_b[0]
};
ASSERT_EQ(0, applypatch_check(&old_file[0], 3, argv));
}
TEST_F(ApplyPatchTest, CheckModeFailure) {
char* argv[2] = {
&bad_sha1_a[0],
&bad_sha1_b[0]
};
ASSERT_NE(0, applypatch_check(&old_file[0], 2, argv));
}
TEST_F(ApplyPatchCacheTest, CheckCacheCorruptedSingle) {
mangle_file(old_file);
char* s = &old_sha1[0];
ASSERT_EQ(0, applypatch_check(&old_file[0], 1, &s));
}
TEST_F(ApplyPatchCacheTest, CheckCacheCorruptedMultiple) {
mangle_file(old_file);
char* argv[3] = {
&bad_sha1_a[0],
&old_sha1[0],
&bad_sha1_b[0]
};
ASSERT_EQ(0, applypatch_check(&old_file[0], 3, argv));
}
TEST_F(ApplyPatchCacheTest, CheckCacheCorruptedFailure) {
mangle_file(old_file);
char* argv[2] = {
&bad_sha1_a[0],
&bad_sha1_b[0]
};
ASSERT_NE(0, applypatch_check(&old_file[0], 2, argv));
}
TEST_F(ApplyPatchCacheTest, CheckCacheMissingSingle) {
unlink(&old_file[0]);
char* s = &old_sha1[0];
ASSERT_EQ(0, applypatch_check(&old_file[0], 1, &s));
}
TEST_F(ApplyPatchCacheTest, CheckCacheMissingMultiple) {
unlink(&old_file[0]);
char* argv[3] = {
&bad_sha1_a[0],
&old_sha1[0],
&bad_sha1_b[0]
};
ASSERT_EQ(0, applypatch_check(&old_file[0], 3, argv));
}
TEST_F(ApplyPatchCacheTest, CheckCacheMissingFailure) {
unlink(&old_file[0]);
char* argv[2] = {
&bad_sha1_a[0],
&bad_sha1_b[0]
};
ASSERT_NE(0, applypatch_check(&old_file[0], 2, argv));
}
TEST_F(ApplyPatchFullTest, ApplyInPlace) {
std::vector<char*> sha1s;
sha1s.push_back(&bad_sha1_a[0]);
sha1s.push_back(&old_sha1[0]);
int ap_result = applypatch(&old_file[0],
"-",
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_EQ(0, ap_result);
ASSERT_TRUE(file_cmp(old_file, new_file));
// reapply, applypatch is idempotent so it should succeed
ap_result = applypatch(&old_file[0],
"-",
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_EQ(0, ap_result);
ASSERT_TRUE(file_cmp(old_file, new_file));
}
TEST_F(ApplyPatchFullTest, ApplyInNewLocation) {
std::vector<char*> sha1s;
sha1s.push_back(&bad_sha1_a[0]);
sha1s.push_back(&old_sha1[0]);
int ap_result = applypatch(&old_file[0],
&output_loc[0],
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_EQ(0, ap_result);
ASSERT_TRUE(file_cmp(output_loc, new_file));
ap_result = applypatch(&old_file[0],
&output_loc[0],
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_EQ(0, ap_result);
ASSERT_TRUE(file_cmp(output_loc, new_file));
}
TEST_F(ApplyPatchFullTest, ApplyCorruptedInNewLocation) {
mangle_file(old_file);
std::vector<char*> sha1s;
sha1s.push_back(&bad_sha1_a[0]);
sha1s.push_back(&old_sha1[0]);
int ap_result = applypatch(&old_file[0],
&output_loc[0],
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_EQ(0, ap_result);
ASSERT_TRUE(file_cmp(output_loc, new_file));
ap_result = applypatch(&old_file[0],
&output_loc[0],
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_EQ(0, ap_result);
ASSERT_TRUE(file_cmp(output_loc, new_file));
}
TEST_F(ApplyPatchDoubleCacheTest, ApplyDoubleCorruptedInNewLocation) {
mangle_file(old_file);
mangle_file(cache_file);
std::vector<char*> sha1s;
sha1s.push_back(&bad_sha1_a[0]);
sha1s.push_back(&old_sha1[0]);
int ap_result = applypatch(&old_file[0],
&output_loc[0],
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_NE(0, ap_result);
ASSERT_FALSE(file_cmp(output_loc, new_file));
ap_result = applypatch(&old_file[0],
&output_loc[0],
&new_sha1[0],
new_size,
2,
sha1s.data(),
patches.data(),
nullptr);
ASSERT_NE(0, ap_result);
ASSERT_FALSE(file_cmp(output_loc, new_file));
}
