| /* |
| * Copyright (C) 2007 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. |
| */ |
| |
| #define TRACE_TAG SERVICES |
| |
| #include "sysdeps.h" |
| |
| #include <errno.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <cstring> |
| #include <thread> |
| |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <cutils/sockets.h> |
| |
| #include "adb.h" |
| #include "adb_io.h" |
| #include "adb_unique_fd.h" |
| #include "adb_utils.h" |
| #include "adb_wifi.h" |
| #include "services.h" |
| #include "socket_spec.h" |
| #include "sysdeps.h" |
| #include "transport.h" |
| |
| namespace { |
| |
| void service_bootstrap_func(std::string service_name, std::function<void(unique_fd)> func, |
| unique_fd fd) { |
| adb_thread_setname(android::base::StringPrintf("%s svc %d", service_name.c_str(), fd.get())); |
| func(std::move(fd)); |
| } |
| |
| } // namespace |
| |
| unique_fd create_service_thread(const char* service_name, std::function<void(unique_fd)> func) { |
| int s[2]; |
| if (adb_socketpair(s)) { |
| printf("cannot create service socket pair\n"); |
| return unique_fd(); |
| } |
| D("socketpair: (%d,%d)", s[0], s[1]); |
| |
| #if !ADB_HOST |
| if (strcmp(service_name, "sync") == 0) { |
| // Set file sync service socket to maximum size |
| int max_buf = LINUX_MAX_SOCKET_SIZE; |
| adb_setsockopt(s[0], SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf)); |
| adb_setsockopt(s[1], SOL_SOCKET, SO_SNDBUF, &max_buf, sizeof(max_buf)); |
| } |
| #endif // !ADB_HOST |
| |
| std::thread(service_bootstrap_func, service_name, func, unique_fd(s[1])).detach(); |
| |
| D("service thread started, %d:%d", s[0], s[1]); |
| return unique_fd(s[0]); |
| } |
| |
| unique_fd service_to_fd(std::string_view name, atransport* transport) { |
| unique_fd ret; |
| |
| if (is_socket_spec(name)) { |
| std::string error; |
| if (!socket_spec_connect(&ret, name, nullptr, nullptr, &error)) { |
| LOG(ERROR) << "failed to connect to socket '" << name << "': " << error; |
| } |
| } else { |
| #if !ADB_HOST |
| ret = daemon_service_to_fd(name, transport); |
| #endif |
| } |
| |
| if (ret >= 0) { |
| close_on_exec(ret.get()); |
| } |
| return ret; |
| } |
| |
| #if ADB_HOST |
| void connect_emulator(const std::string& port_spec, std::string* response) { |
| std::vector<std::string> pieces = android::base::Split(port_spec, ","); |
| if (pieces.size() != 2) { |
| *response = android::base::StringPrintf("unable to parse '%s' as <console port>,<adb port>", |
| port_spec.c_str()); |
| return; |
| } |
| |
| int console_port = strtol(pieces[0].c_str(), nullptr, 0); |
| int adb_port = strtol(pieces[1].c_str(), nullptr, 0); |
| if (console_port <= 0 || adb_port <= 0) { |
| *response = android::base::StringPrintf("Invalid port numbers: %s", port_spec.c_str()); |
| return; |
| } |
| |
| // Check if the emulator is already known. |
| // Note: There's a small but harmless race condition here: An emulator not |
| // present just yet could be registered by another invocation right |
| // after doing this check here. However, local_connect protects |
| // against double-registration too. From here, a better error message |
| // can be produced. In the case of the race condition, the very specific |
| // error message won't be shown, but the data doesn't get corrupted. |
| atransport* known_emulator = find_emulator_transport_by_adb_port(adb_port); |
| if (known_emulator != nullptr) { |
| *response = android::base::StringPrintf("Emulator already registered on port %d", adb_port); |
| return; |
| } |
| |
| // Preconditions met, try to connect to the emulator. |
| std::string error; |
| if (!local_connect_arbitrary_ports(console_port, adb_port, &error)) { |
| *response = android::base::StringPrintf("Connected to emulator on ports %d,%d", |
| console_port, adb_port); |
| } else { |
| *response = android::base::StringPrintf("Could not connect to emulator on ports %d,%d: %s", |
| console_port, adb_port, error.c_str()); |
| } |
| } |
| |
| static void connect_service(unique_fd fd, std::string host) { |
| std::string response; |
| if (!strncmp(host.c_str(), "emu:", 4)) { |
| connect_emulator(host.c_str() + 4, &response); |
| } else { |
| connect_device(host, &response); |
| } |
| |
| // Send response for emulator and device |
| SendProtocolString(fd.get(), response); |
| } |
| |
| static void pair_service(unique_fd fd, std::string host, std::string password) { |
| std::string response; |
| adb_wifi_pair_device(host, password, response); |
| SendProtocolString(fd.get(), response); |
| } |
| |
| static void wait_service(unique_fd fd, std::string serial, TransportId transport_id, |
| std::string spec) { |
| std::vector<std::string> components = android::base::Split(spec, "-"); |
| if (components.size() < 2) { |
| SendFail(fd, "short wait-for-: " + spec); |
| return; |
| } |
| |
| TransportType transport_type; |
| if (components[0] == "local") { |
| transport_type = kTransportLocal; |
| } else if (components[0] == "usb") { |
| transport_type = kTransportUsb; |
| } else if (components[0] == "any") { |
| transport_type = kTransportAny; |
| } else { |
| SendFail(fd, "bad wait-for- transport: " + spec); |
| return; |
| } |
| |
| std::vector<ConnectionState> states; |
| for (size_t i = 1; i < components.size(); ++i) { |
| if (components[i] == "device") { |
| states.push_back(kCsDevice); |
| } else if (components[i] == "recovery") { |
| states.push_back(kCsRecovery); |
| } else if (components[i] == "rescue") { |
| states.push_back(kCsRescue); |
| } else if (components[i] == "sideload") { |
| states.push_back(kCsSideload); |
| } else if (components[i] == "bootloader") { |
| states.push_back(kCsBootloader); |
| } else if (components[i] == "any") { |
| states.push_back(kCsAny); |
| } else if (components[i] == "disconnect") { |
| states.push_back(kCsOffline); |
| } else { |
| SendFail(fd, "bad wait-for- state: " + spec); |
| return; |
| } |
| } |
| |
| while (true) { |
| bool is_ambiguous = false; |
| std::string error = "unknown error"; |
| atransport* t = |
| acquire_one_transport(transport_type, !serial.empty() ? serial.c_str() : nullptr, |
| transport_id, &is_ambiguous, &error); |
| |
| for (const auto& state : states) { |
| if (state == kCsOffline) { |
| // Special case for wait-for-disconnect: |
| // We want to wait for USB devices to completely disappear, but TCP devices can |
| // go into the offline state, since we automatically reconnect. |
| if (!t) { |
| SendOkay(fd); |
| return; |
| } else if (!t->GetUsbHandle()) { |
| SendOkay(fd); |
| return; |
| } |
| } else { |
| if (t && (state == kCsAny || state == t->GetConnectionState())) { |
| SendOkay(fd); |
| return; |
| } |
| } |
| } |
| |
| if (is_ambiguous) { |
| SendFail(fd, error); |
| return; |
| } |
| |
| // Sleep before retrying. |
| adb_pollfd pfd = {.fd = fd.get(), .events = POLLIN}; |
| if (adb_poll(&pfd, 1, 100) != 0) { |
| // The other end of the socket is closed, probably because the |
| // client terminated. Bail out. |
| SendFail(fd, error); |
| return; |
| } |
| } |
| } |
| #endif |
| |
| #if ADB_HOST |
| asocket* host_service_to_socket(std::string_view name, std::string_view serial, |
| TransportId transport_id) { |
| if (name == "track-devices") { |
| return create_device_tracker(false); |
| } else if (name == "track-devices-l") { |
| return create_device_tracker(true); |
| } else if (android::base::ConsumePrefix(&name, "wait-for-")) { |
| std::string spec(name); |
| unique_fd fd = |
| create_service_thread("wait", std::bind(wait_service, std::placeholders::_1, |
| std::string(serial), transport_id, spec)); |
| return create_local_socket(std::move(fd)); |
| } else if (android::base::ConsumePrefix(&name, "connect:")) { |
| std::string host(name); |
| unique_fd fd = create_service_thread( |
| "connect", std::bind(connect_service, std::placeholders::_1, host)); |
| return create_local_socket(std::move(fd)); |
| } else if (android::base::ConsumePrefix(&name, "pair:")) { |
| const char* divider = strchr(name.data(), ':'); |
| if (!divider) { |
| return nullptr; |
| } |
| std::string password(name.data(), divider); |
| std::string host(divider + 1); |
| unique_fd fd = create_service_thread( |
| "pair", std::bind(pair_service, std::placeholders::_1, host, password)); |
| return create_local_socket(std::move(fd)); |
| } |
| return nullptr; |
| } |
| #endif /* ADB_HOST */ |