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//
// Copyright (C) 2018 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 <errno.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <string>
#include <vector>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parseint.h>
#include <android-base/strings.h>
#include "action.h"
#include "action_manager.h"
#include "action_parser.h"
#include "host_import_parser.h"
#include "host_init_stubs.h"
#include "parser.h"
#include "result.h"
#include "service.h"
#define EXCLUDE_FS_CONFIG_STRUCTURES
#include "generated_android_ids.h"
using namespace std::literals;
using android::base::ParseInt;
using android::base::ReadFileToString;
using android::base::Split;
static std::string passwd_file;
static std::vector<std::pair<std::string, int>> GetVendorPasswd() {
std::string passwd;
if (!ReadFileToString(passwd_file, &passwd)) {
return {};
}
std::vector<std::pair<std::string, int>> result;
auto passwd_lines = Split(passwd, "\n");
for (const auto& line : passwd_lines) {
auto split_line = Split(line, ":");
if (split_line.size() < 3) {
continue;
}
int uid = 0;
if (!ParseInt(split_line[2], &uid)) {
continue;
}
result.emplace_back(split_line[0], uid);
}
return result;
}
passwd* getpwnam(const char* login) { // NOLINT: implementing bad function.
// This isn't thread safe, but that's okay for our purposes.
static char static_name[32] = "";
static char static_dir[32] = "/";
static char static_shell[32] = "/system/bin/sh";
static passwd static_passwd = {
.pw_name = static_name,
.pw_dir = static_dir,
.pw_shell = static_shell,
.pw_uid = 0,
.pw_gid = 0,
};
for (size_t n = 0; n < android_id_count; ++n) {
if (!strcmp(android_ids[n].name, login)) {
snprintf(static_name, sizeof(static_name), "%s", android_ids[n].name);
static_passwd.pw_uid = android_ids[n].aid;
static_passwd.pw_gid = android_ids[n].aid;
return &static_passwd;
}
}
static const auto vendor_passwd = GetVendorPasswd();
for (const auto& [name, uid] : vendor_passwd) {
if (name == login) {
snprintf(static_name, sizeof(static_name), "%s", name.c_str());
static_passwd.pw_uid = uid;
static_passwd.pw_gid = uid;
return &static_passwd;
}
}
unsigned int oem_uid;
if (sscanf(login, "oem_%u", &oem_uid) == 1) {
snprintf(static_name, sizeof(static_name), "%s", login);
static_passwd.pw_uid = oem_uid;
static_passwd.pw_gid = oem_uid;
return &static_passwd;
}
errno = ENOENT;
return nullptr;
}
namespace android {
namespace init {
static Result<Success> do_stub(const BuiltinArguments& args) {
return Success();
}
#include "generated_stub_builtin_function_map.h"
int main(int argc, char** argv) {
android::base::InitLogging(argv, &android::base::StdioLogger);
android::base::SetMinimumLogSeverity(android::base::ERROR);
if (argc != 2 && argc != 3) {
LOG(ERROR) << "Usage: " << argv[0] << " <init rc file> [passwd file]";
return EXIT_FAILURE;
}
if (argc == 3) {
passwd_file = argv[2];
}
const BuiltinFunctionMap function_map;
Action::set_function_map(&function_map);
ActionManager& am = ActionManager::GetInstance();
ServiceList& sl = ServiceList::GetInstance();
Parser parser;
parser.AddSectionParser("service", std::make_unique<ServiceParser>(&sl, nullptr));
parser.AddSectionParser("on", std::make_unique<ActionParser>(&am, nullptr));
parser.AddSectionParser("import", std::make_unique<HostImportParser>());
if (!parser.ParseConfigFileInsecure(argv[1])) {
LOG(ERROR) << "Failed to open init rc script '" << argv[1] << "'";
return EXIT_FAILURE;
}
if (parser.parse_error_count() > 0) {
LOG(ERROR) << "Failed to parse init script '" << argv[1] << "' with "
<< parser.parse_error_count() << " errors";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
} // namespace init
} // namespace android
int main(int argc, char** argv) {
return android::init::main(argc, argv);
}
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