/*
* 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 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.
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <string>
#include <android-base/file.h>
#include <android-base/properties.h>
#include <android-base/test_utils.h>
#include <gtest/gtest.h>
#include "edify/expr.h"
#include "error_code.h"
#include "updater/install.h"
struct selabel_handle *sehandle = nullptr;
static void expect(const char* expected, const char* expr_str, CauseCode cause_code) {
Expr* e;
int error_count;
EXPECT_EQ(parse_string(expr_str, &e, &error_count), 0);
State state(expr_str, nullptr);
std::string result;
bool status = Evaluate(&state, e, &result);
if (expected == nullptr) {
EXPECT_FALSE(status);
} else {
EXPECT_STREQ(expected, result.c_str());
}
// Error code is set in updater/updater.cpp only, by parsing State.errmsg.
EXPECT_EQ(kNoError, state.error_code);
// Cause code should always be available.
EXPECT_EQ(cause_code, state.cause_code);
}
class UpdaterTest : public ::testing::Test {
protected:
virtual void SetUp() {
RegisterBuiltins();
RegisterInstallFunctions();
}
};
TEST_F(UpdaterTest, getprop) {
expect(android::base::GetProperty("ro.product.device", "").c_str(),
"getprop(\"ro.product.device\")",
kNoCause);
expect(android::base::GetProperty("ro.build.fingerprint", "").c_str(),
"getprop(\"ro.build.fingerprint\")",
kNoCause);
// getprop() accepts only one parameter.
expect(nullptr, "getprop()", kArgsParsingFailure);
expect(nullptr, "getprop(\"arg1\", \"arg2\")", kArgsParsingFailure);
}
TEST_F(UpdaterTest, sha1_check) {
// sha1_check(data) returns the SHA-1 of the data.
expect("81fe8bfe87576c3ecb22426f8e57847382917acf", "sha1_check(\"abcd\")", kNoCause);
expect("da39a3ee5e6b4b0d3255bfef95601890afd80709", "sha1_check(\"\")", kNoCause);
// sha1_check(data, sha1_hex, [sha1_hex, ...]) returns the matched SHA-1.
expect("81fe8bfe87576c3ecb22426f8e57847382917acf",
"sha1_check(\"abcd\", \"81fe8bfe87576c3ecb22426f8e57847382917acf\")",
kNoCause);
expect("81fe8bfe87576c3ecb22426f8e57847382917acf",
"sha1_check(\"abcd\", \"wrong_sha1\", \"81fe8bfe87576c3ecb22426f8e57847382917acf\")",
kNoCause);
// Or "" if there's no match.
expect("",
"sha1_check(\"abcd\", \"wrong_sha1\")",
kNoCause);
expect("",
"sha1_check(\"abcd\", \"wrong_sha1\", \"wrong_sha2\")",
kNoCause);
// sha1_check() expects at least one argument.
expect(nullptr, "sha1_check()", kArgsParsingFailure);
}
TEST_F(UpdaterTest, file_getprop) {
// file_getprop() expects two arguments.
expect(nullptr, "file_getprop()", kArgsParsingFailure);
expect(nullptr, "file_getprop(\"arg1\")", kArgsParsingFailure);
expect(nullptr, "file_getprop(\"arg1\", \"arg2\", \"arg3\")", kArgsParsingFailure);
// File doesn't exist.
expect(nullptr, "file_getprop(\"/doesntexist\", \"key1\")", kFileGetPropFailure);
// Reject too large files (current limit = 65536).
TemporaryFile temp_file1;
std::string buffer(65540, '\0');
ASSERT_TRUE(android::base::WriteStringToFile(buffer, temp_file1.path));
// Read some keys.
TemporaryFile temp_file2;
std::string content("ro.product.name=tardis\n"
"# comment\n\n\n"
"ro.product.model\n"
"ro.product.board = magic \n");
ASSERT_TRUE(android::base::WriteStringToFile(content, temp_file2.path));
std::string script1("file_getprop(\"" + std::string(temp_file2.path) +
"\", \"ro.product.name\")");
expect("tardis", script1.c_str(), kNoCause);
std::string script2("file_getprop(\"" + std::string(temp_file2.path) +
"\", \"ro.product.board\")");
expect("magic", script2.c_str(), kNoCause);
// No match.
std::string script3("file_getprop(\"" + std::string(temp_file2.path) +
"\", \"ro.product.wrong\")");
expect("", script3.c_str(), kNoCause);
std::string script4("file_getprop(\"" + std::string(temp_file2.path) +
"\", \"ro.product.name=\")");
expect("", script4.c_str(), kNoCause);
std::string script5("file_getprop(\"" + std::string(temp_file2.path) +
"\", \"ro.product.nam\")");
expect("", script5.c_str(), kNoCause);
std::string script6("file_getprop(\"" + std::string(temp_file2.path) +
"\", \"ro.product.model\")");
expect("", script6.c_str(), kNoCause);
}
TEST_F(UpdaterTest, delete) {
// Delete none.
expect("0", "delete()", kNoCause);
expect("0", "delete(\"/doesntexist\")", kNoCause);
expect("0", "delete(\"/doesntexist1\", \"/doesntexist2\")", kNoCause);
expect("0", "delete(\"/doesntexist1\", \"/doesntexist2\", \"/doesntexist3\")", kNoCause);
// Delete one file.
TemporaryFile temp_file1;
ASSERT_TRUE(android::base::WriteStringToFile("abc", temp_file1.path));
std::string script1("delete(\"" + std::string(temp_file1.path) + "\")");
expect("1", script1.c_str(), kNoCause);
// Delete two files.
TemporaryFile temp_file2;
ASSERT_TRUE(android::base::WriteStringToFile("abc", temp_file2.path));
TemporaryFile temp_file3;
ASSERT_TRUE(android::base::WriteStringToFile("abc", temp_file3.path));
std::string script2("delete(\"" + std::string(temp_file2.path) + "\", \"" +
std::string(temp_file3.path) + "\")");
expect("2", script2.c_str(), kNoCause);
// Delete already deleted files.
expect("0", script2.c_str(), kNoCause);
// Delete one out of three.
TemporaryFile temp_file4;
ASSERT_TRUE(android::base::WriteStringToFile("abc", temp_file4.path));
std::string script3("delete(\"/doesntexist1\", \"" + std::string(temp_file4.path) +
"\", \"/doesntexist2\")");
expect("1", script3.c_str(), kNoCause);
}
TEST_F(UpdaterTest, rename) {
// rename() expects two arguments.
expect(nullptr, "rename()", kArgsParsingFailure);
expect(nullptr, "rename(\"arg1\")", kArgsParsingFailure);
expect(nullptr, "rename(\"arg1\", \"arg2\", \"arg3\")", kArgsParsingFailure);
// src_name or dst_name cannot be empty.
expect(nullptr, "rename(\"\", \"arg2\")", kArgsParsingFailure);
expect(nullptr, "rename(\"arg1\", \"\")", kArgsParsingFailure);
// File doesn't exist (both of src and dst).
expect(nullptr, "rename(\"/doesntexist\", \"/doesntexisteither\")" , kFileRenameFailure);
// Can't create parent directory.
TemporaryFile temp_file1;
ASSERT_TRUE(android::base::WriteStringToFile("abc", temp_file1.path));
std::string script1("rename(\"" + std::string(temp_file1.path) + "\", \"/proc/0/file1\")");
expect(nullptr, script1.c_str(), kFileRenameFailure);
// Rename.
TemporaryFile temp_file2;
std::string script2("rename(\"" + std::string(temp_file1.path) + "\", \"" +
std::string(temp_file2.path) + "\")");
expect(temp_file2.path, script2.c_str(), kNoCause);
// Already renamed.
expect(temp_file2.path, script2.c_str(), kNoCause);
// Parents create successfully.
TemporaryFile temp_file3;
TemporaryDir td;
std::string temp_dir(td.path);
std::string dst_file = temp_dir + "/aaa/bbb/a.txt";
std::string script3("rename(\"" + std::string(temp_file3.path) + "\", \"" + dst_file + "\")");
expect(dst_file.c_str(), script3.c_str(), kNoCause);
// Clean up the temp files under td.
ASSERT_EQ(0, unlink(dst_file.c_str()));
ASSERT_EQ(0, rmdir((temp_dir + "/aaa/bbb").c_str()));
ASSERT_EQ(0, rmdir((temp_dir + "/aaa").c_str()));
}
TEST_F(UpdaterTest, symlink) {
// symlink expects 1+ argument.
expect(nullptr, "symlink()", kArgsParsingFailure);
// symlink should fail if src is an empty string.
TemporaryFile temp_file1;
std::string script1("symlink(\"" + std::string(temp_file1.path) + "\", \"\")");
expect(nullptr, script1.c_str(), kSymlinkFailure);
std::string script2("symlink(\"" + std::string(temp_file1.path) + "\", \"src1\", \"\")");
expect(nullptr, script2.c_str(), kSymlinkFailure);
// symlink failed to remove old src.
std::string script3("symlink(\"" + std::string(temp_file1.path) + "\", \"/proc\")");
expect(nullptr, script3.c_str(), kSymlinkFailure);
// symlink can create symlinks.
TemporaryFile temp_file;
std::string content = "magicvalue";
ASSERT_TRUE(android::base::WriteStringToFile(content, temp_file.path));
TemporaryDir td;
std::string src1 = std::string(td.path) + "/symlink1";
std::string src2 = std::string(td.path) + "/symlink2";
std::string script4("symlink(\"" + std::string(temp_file.path) + "\", \"" +
src1 + "\", \"" + src2 + "\")");
expect("t", script4.c_str(), kNoCause);
// Verify the created symlinks.
struct stat sb;
ASSERT_TRUE(lstat(src1.c_str(), &sb) == 0 && S_ISLNK(sb.st_mode));
ASSERT_TRUE(lstat(src2.c_str(), &sb) == 0 && S_ISLNK(sb.st_mode));
// Clean up the leftovers.
ASSERT_EQ(0, unlink(src1.c_str()));
ASSERT_EQ(0, unlink(src2.c_str()));
}
