289 lines
7.8 KiB
C++
289 lines
7.8 KiB
C++
/*
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* Copyright (C) 2015 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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#define TRACE_TAG TRACE_ADB
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#include "sysdeps.h"
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#include "adb_client.h"
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#include <errno.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <string>
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#include <vector>
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#include <base/stringprintf.h>
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#include <base/strings.h>
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#include "adb_io.h"
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static TransportType __adb_transport = kTransportAny;
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static const char* __adb_serial = NULL;
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static int __adb_server_port = DEFAULT_ADB_PORT;
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static const char* __adb_server_name = NULL;
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static std::string perror_str(const char* msg) {
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return android::base::StringPrintf("%s: %s", msg, strerror(errno));
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}
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static bool ReadProtocolString(int fd, std::string* s, std::string* error) {
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char buf[5];
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if (!ReadFdExactly(fd, buf, 4)) {
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*error = perror_str("protocol fault (couldn't read status length)");
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return false;
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}
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buf[4] = 0;
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unsigned long len = strtoul(buf, 0, 16);
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s->resize(len, '\0');
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if (!ReadFdExactly(fd, &(*s)[0], len)) {
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*error = perror_str("protocol fault (couldn't read status message)");
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return false;
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}
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return true;
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}
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void adb_set_transport(TransportType type, const char* serial)
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{
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__adb_transport = type;
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__adb_serial = serial;
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}
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void adb_set_tcp_specifics(int server_port)
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{
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__adb_server_port = server_port;
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}
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void adb_set_tcp_name(const char* hostname)
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{
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__adb_server_name = hostname;
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}
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static int switch_socket_transport(int fd, std::string* error) {
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std::string service;
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if (__adb_serial) {
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service += "host:transport:";
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service += __adb_serial;
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} else {
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const char* transport_type = "???";
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switch (__adb_transport) {
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case kTransportUsb:
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transport_type = "transport-usb";
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break;
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case kTransportLocal:
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transport_type = "transport-local";
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break;
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case kTransportAny:
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transport_type = "transport-any";
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break;
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case kTransportHost:
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// no switch necessary
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return 0;
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}
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service += "host:";
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service += transport_type;
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}
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if (!SendProtocolString(fd, service)) {
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*error = perror_str("write failure during connection");
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adb_close(fd);
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return -1;
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}
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D("Switch transport in progress\n");
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if (!adb_status(fd, error)) {
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adb_close(fd);
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D("Switch transport failed: %s\n", error->c_str());
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return -1;
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}
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D("Switch transport success\n");
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return 0;
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}
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bool adb_status(int fd, std::string* error) {
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char buf[5];
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if (!ReadFdExactly(fd, buf, 4)) {
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*error = perror_str("protocol fault (couldn't read status)");
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return false;
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}
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if (!memcmp(buf, "OKAY", 4)) {
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return true;
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}
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if (memcmp(buf, "FAIL", 4)) {
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*error = android::base::StringPrintf("protocol fault (status %02x %02x %02x %02x?!)",
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buf[0], buf[1], buf[2], buf[3]);
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return false;
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}
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ReadProtocolString(fd, error, error);
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return false;
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}
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int _adb_connect(const std::string& service, std::string* error) {
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D("_adb_connect: %s\n", service.c_str());
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if (service.empty() || service.size() > 1024) {
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*error = android::base::StringPrintf("bad service name length (%zd)",
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service.size());
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return -1;
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}
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int fd;
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if (__adb_server_name) {
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fd = socket_network_client(__adb_server_name, __adb_server_port, SOCK_STREAM);
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} else {
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fd = socket_loopback_client(__adb_server_port, SOCK_STREAM);
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}
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if (fd < 0) {
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*error = perror_str("cannot connect to daemon");
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return -2;
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}
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if (memcmp(&service[0],"host",4) != 0 && switch_socket_transport(fd, error)) {
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return -1;
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}
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if(!SendProtocolString(fd, service)) {
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*error = perror_str("write failure during connection");
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adb_close(fd);
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return -1;
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}
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if (!adb_status(fd, error)) {
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adb_close(fd);
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return -1;
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}
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D("_adb_connect: return fd %d\n", fd);
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return fd;
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}
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int adb_connect(const std::string& service, std::string* error) {
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// first query the adb server's version
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int fd = _adb_connect("host:version", error);
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D("adb_connect: service %s\n", service.c_str());
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if (fd == -2 && __adb_server_name) {
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fprintf(stderr,"** Cannot start server on remote host\n");
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return fd;
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} else if (fd == -2) {
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fprintf(stdout,"* daemon not running. starting it now on port %d *\n",
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__adb_server_port);
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start_server:
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if (launch_server(__adb_server_port)) {
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fprintf(stderr,"* failed to start daemon *\n");
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return -1;
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} else {
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fprintf(stdout,"* daemon started successfully *\n");
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}
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/* give the server some time to start properly and detect devices */
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adb_sleep_ms(3000);
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// fall through to _adb_connect
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} else {
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// if server was running, check its version to make sure it is not out of date
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int version = ADB_SERVER_VERSION - 1;
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// if we have a file descriptor, then parse version result
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if (fd >= 0) {
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std::string version_string;
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if (!ReadProtocolString(fd, &version_string, error)) {
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goto error;
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}
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adb_close(fd);
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if (sscanf(&version_string[0], "%04x", &version) != 1) {
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goto error;
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}
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} else {
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// if fd is -1, then check for "unknown host service",
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// which would indicate a version of adb that does not support the version command
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if (*error == "unknown host service") {
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return fd;
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}
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}
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if (version != ADB_SERVER_VERSION) {
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printf("adb server is out of date. killing...\n");
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fd = _adb_connect("host:kill", error);
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adb_close(fd);
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/* XXX can we better detect its death? */
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adb_sleep_ms(2000);
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goto start_server;
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}
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}
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// if the command is start-server, we are done.
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if (service == "host:start-server") {
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return 0;
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}
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fd = _adb_connect(service, error);
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if (fd == -1) {
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D("_adb_connect error: %s", error->c_str());
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} else if(fd == -2) {
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fprintf(stderr,"** daemon still not running\n");
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}
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D("adb_connect: return fd %d\n", fd);
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return fd;
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error:
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adb_close(fd);
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return -1;
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}
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bool adb_command(const std::string& service) {
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std::string error;
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int fd = adb_connect(service, &error);
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if (fd < 0) {
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fprintf(stderr, "error: %s\n", error.c_str());
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return false;
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}
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if (!adb_status(fd, &error)) {
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fprintf(stderr, "error: %s\n", error.c_str());
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adb_close(fd);
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return false;
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}
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return true;
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}
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bool adb_query(const std::string& service, std::string* result, std::string* error) {
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D("adb_query: %s\n", service.c_str());
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int fd = adb_connect(service, error);
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if (fd < 0) {
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return false;
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}
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result->clear();
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if (!ReadProtocolString(fd, result, error)) {
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adb_close(fd);
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return false;
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}
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return true;
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}
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