115 lines
3.5 KiB
C++
115 lines
3.5 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <sys/wait.h>
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#include <android-base/cmsg.h>
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#include <android-base/strings.h>
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#include <cmd.h>
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#include "adb.h"
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#include "adb_io.h"
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#include "adb_utils.h"
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#include "shell_service.h"
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#include "sysdeps.h"
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namespace {
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class AdbFdTextOutput : public android::TextOutput {
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public:
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explicit AdbFdTextOutput(borrowed_fd fd) : fd_(fd) {}
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private:
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android::status_t print(const char* txt, size_t len) override {
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return WriteFdExactly(fd_, txt, len) ? android::OK : -errno;
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}
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void moveIndent(int delta) override { /*not implemented*/
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}
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void pushBundle() override { /*not implemented*/
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}
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void popBundle() override { /*not implemented*/
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}
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private:
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borrowed_fd fd_;
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};
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std::vector<std::string_view> parseCmdArgs(std::string_view args) {
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std::vector<std::string_view> argv;
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char delim = ABB_ARG_DELIMETER;
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size_t size = args.size();
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size_t base = 0;
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while (base < size) {
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size_t found;
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for (found = base; found < size && args[found] && args[found] != delim; ++found)
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;
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if (found > base) {
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argv.emplace_back(args.substr(base, found - base));
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}
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base = found + 1;
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}
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return argv;
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}
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} // namespace
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static int execCmd(std::string_view args, borrowed_fd in, borrowed_fd out, borrowed_fd err) {
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int max_buf = LINUX_MAX_SOCKET_SIZE;
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adb_setsockopt(in, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
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adb_setsockopt(out, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
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adb_setsockopt(err, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
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AdbFdTextOutput oin(out);
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AdbFdTextOutput oerr(err);
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return cmdMain(parseCmdArgs(args), oin, oerr, in.get(), out.get(), err.get(),
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RunMode::kLibrary);
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}
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int main(int argc, char* const argv[]) {
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signal(SIGPIPE, SIG_IGN);
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int fd = STDIN_FILENO;
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std::string data;
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while (true) {
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std::string error;
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if (!ReadProtocolString(fd, &data, &error)) {
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PLOG(ERROR) << "Failed to read message: " << error;
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break;
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}
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std::string_view name = data;
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auto protocol = SubprocessProtocol::kShell;
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if (android::base::ConsumePrefix(&name, "abb:")) {
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protocol = SubprocessProtocol::kShell;
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} else if (android::base::ConsumePrefix(&name, "abb_exec:")) {
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protocol = SubprocessProtocol::kNone;
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} else {
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LOG(FATAL) << "Unknown command prefix for abb: " << data;
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}
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unique_fd result = StartCommandInProcess(std::string(name), &execCmd, protocol);
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int max_buf = LINUX_MAX_SOCKET_SIZE;
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adb_setsockopt(result, SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf));
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if (android::base::SendFileDescriptors(fd, "", 1, result.get()) != 1) {
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PLOG(ERROR) << "Failed to send an inprocess fd for command: " << data;
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break;
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}
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}
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}
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