| /* |
| * 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 TRACE_ADB |
| |
| #include "sysdeps.h" |
| #include "adb.h" |
| |
| #include <ctype.h> |
| #include <errno.h> |
| #include <stdarg.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/time.h> |
| #include <time.h> |
| |
| #include <string> |
| #include <vector> |
| #include <unordered_map> |
| |
| #include <base/logging.h> |
| #include <base/macros.h> |
| #include <base/stringprintf.h> |
| #include <base/strings.h> |
| |
| #include "adb_auth.h" |
| #include "adb_io.h" |
| #include "adb_listeners.h" |
| #include "adb_utils.h" |
| #include "transport.h" |
| |
| #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) |
| |
| #if !ADB_HOST |
| #include <cutils/properties.h> |
| #include <sys/capability.h> |
| #include <sys/mount.h> |
| #endif |
| |
| #if !ADB_HOST |
| const char* adb_device_banner = "device"; |
| static android::base::LogdLogger gLogdLogger; |
| #else |
| const char* adb_device_banner = "host"; |
| #endif |
| |
| void AdbLogger(android::base::LogId id, android::base::LogSeverity severity, |
| const char* tag, const char* file, unsigned int line, |
| const char* message) { |
| android::base::StderrLogger(id, severity, tag, file, line, message); |
| #if !ADB_HOST |
| gLogdLogger(id, severity, tag, file, line, message); |
| #endif |
| } |
| |
| std::string adb_version() { |
| // Don't change the format of this --- it's parsed by ddmlib. |
| return android::base::StringPrintf("Android Debug Bridge version %d.%d.%d\n" |
| "Revision %s\n", |
| ADB_VERSION_MAJOR, ADB_VERSION_MINOR, ADB_SERVER_VERSION, |
| ADB_REVISION); |
| } |
| |
| void fatal(const char *fmt, ...) { |
| va_list ap; |
| va_start(ap, fmt); |
| fprintf(stderr, "error: "); |
| vfprintf(stderr, fmt, ap); |
| fprintf(stderr, "\n"); |
| va_end(ap); |
| exit(-1); |
| } |
| |
| void fatal_errno(const char* fmt, ...) { |
| va_list ap; |
| va_start(ap, fmt); |
| fprintf(stderr, "error: %s: ", strerror(errno)); |
| vfprintf(stderr, fmt, ap); |
| fprintf(stderr, "\n"); |
| va_end(ap); |
| exit(-1); |
| } |
| |
| #if !ADB_HOST |
| static std::string get_log_file_name() { |
| struct tm now; |
| time_t t; |
| tzset(); |
| time(&t); |
| localtime_r(&t, &now); |
| |
| char timestamp[PATH_MAX]; |
| strftime(timestamp, sizeof(timestamp), "%Y-%m-%d-%H-%M-%S", &now); |
| |
| return android::base::StringPrintf("/data/adb/adb-%s-%d", timestamp, |
| getpid()); |
| } |
| |
| void start_device_log(void) { |
| int fd = unix_open(get_log_file_name().c_str(), |
| O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, 0640); |
| if (fd == -1) { |
| return; |
| } |
| |
| // Redirect stdout and stderr to the log file. |
| dup2(fd, STDOUT_FILENO); |
| dup2(fd, STDERR_FILENO); |
| fprintf(stderr, "--- adb starting (pid %d) ---\n", getpid()); |
| unix_close(fd); |
| } |
| #endif |
| |
| int adb_trace_mask; |
| |
| std::string get_trace_setting_from_env() { |
| const char* setting = getenv("ADB_TRACE"); |
| if (setting == nullptr) { |
| setting = ""; |
| } |
| |
| return std::string(setting); |
| } |
| |
| #if !ADB_HOST |
| std::string get_trace_setting_from_prop() { |
| char buf[PROPERTY_VALUE_MAX]; |
| property_get("persist.adb.trace_mask", buf, ""); |
| return std::string(buf); |
| } |
| #endif |
| |
| std::string get_trace_setting() { |
| #if ADB_HOST |
| return get_trace_setting_from_env(); |
| #else |
| return get_trace_setting_from_prop(); |
| #endif |
| } |
| |
| // Split the space separated list of tags from the trace setting and build the |
| // trace mask from it. note that '1' and 'all' are special cases to enable all |
| // tracing. |
| // |
| // adb's trace setting comes from the ADB_TRACE environment variable, whereas |
| // adbd's comes from the system property persist.adb.trace_mask. |
| static void setup_trace_mask() { |
| const std::string trace_setting = get_trace_setting(); |
| if (trace_setting.empty()) { |
| return; |
| } |
| |
| std::unordered_map<std::string, int> trace_flags = { |
| {"1", 0}, |
| {"all", 0}, |
| {"adb", TRACE_ADB}, |
| {"sockets", TRACE_SOCKETS}, |
| {"packets", TRACE_PACKETS}, |
| {"rwx", TRACE_RWX}, |
| {"usb", TRACE_USB}, |
| {"sync", TRACE_SYNC}, |
| {"sysdeps", TRACE_SYSDEPS}, |
| {"transport", TRACE_TRANSPORT}, |
| {"jdwp", TRACE_JDWP}, |
| {"services", TRACE_SERVICES}, |
| {"auth", TRACE_AUTH}, |
| {"fdevent", TRACE_FDEVENT}, |
| {"shell", TRACE_SHELL}}; |
| |
| std::vector<std::string> elements = android::base::Split(trace_setting, " "); |
| for (const auto& elem : elements) { |
| const auto& flag = trace_flags.find(elem); |
| if (flag == trace_flags.end()) { |
| D("Unknown trace flag: %s", elem.c_str()); |
| continue; |
| } |
| |
| if (flag->second == 0) { |
| // 0 is used for the special values "1" and "all" that enable all |
| // tracing. |
| adb_trace_mask = ~0; |
| return; |
| } else { |
| adb_trace_mask |= 1 << flag->second; |
| } |
| } |
| } |
| |
| void adb_trace_init(char** argv) { |
| #if !ADB_HOST |
| // Don't open log file if no tracing, since this will block |
| // the crypto unmount of /data |
| if (!get_trace_setting().empty()) { |
| if (isatty(STDOUT_FILENO) == 0) { |
| start_device_log(); |
| } |
| } |
| #endif |
| |
| setup_trace_mask(); |
| android::base::InitLogging(argv, AdbLogger); |
| |
| D("%s", adb_version().c_str()); |
| } |
| |
| apacket* get_apacket(void) |
| { |
| apacket* p = reinterpret_cast<apacket*>(malloc(sizeof(apacket))); |
| if (p == nullptr) { |
| fatal("failed to allocate an apacket"); |
| } |
| |
| memset(p, 0, sizeof(apacket) - MAX_PAYLOAD); |
| return p; |
| } |
| |
| void put_apacket(apacket *p) |
| { |
| free(p); |
| } |
| |
| void handle_online(atransport *t) |
| { |
| D("adb: online"); |
| t->online = 1; |
| } |
| |
| void handle_offline(atransport *t) |
| { |
| D("adb: offline"); |
| //Close the associated usb |
| t->online = 0; |
| |
| // This is necessary to avoid a race condition that occurred when a transport closes |
| // while a client socket is still active. |
| close_all_sockets(t); |
| |
| t->RunDisconnects(); |
| } |
| |
| #if DEBUG_PACKETS |
| #define DUMPMAX 32 |
| void print_packet(const char *label, apacket *p) |
| { |
| char *tag; |
| char *x; |
| unsigned count; |
| |
| switch(p->msg.command){ |
| case A_SYNC: tag = "SYNC"; break; |
| case A_CNXN: tag = "CNXN" ; break; |
| case A_OPEN: tag = "OPEN"; break; |
| case A_OKAY: tag = "OKAY"; break; |
| case A_CLSE: tag = "CLSE"; break; |
| case A_WRTE: tag = "WRTE"; break; |
| case A_AUTH: tag = "AUTH"; break; |
| default: tag = "????"; break; |
| } |
| |
| fprintf(stderr, "%s: %s %08x %08x %04x \"", |
| label, tag, p->msg.arg0, p->msg.arg1, p->msg.data_length); |
| count = p->msg.data_length; |
| x = (char*) p->data; |
| if(count > DUMPMAX) { |
| count = DUMPMAX; |
| tag = "\n"; |
| } else { |
| tag = "\"\n"; |
| } |
| while(count-- > 0){ |
| if((*x >= ' ') && (*x < 127)) { |
| fputc(*x, stderr); |
| } else { |
| fputc('.', stderr); |
| } |
| x++; |
| } |
| fputs(tag, stderr); |
| } |
| #endif |
| |
| static void send_ready(unsigned local, unsigned remote, atransport *t) |
| { |
| D("Calling send_ready"); |
| apacket *p = get_apacket(); |
| p->msg.command = A_OKAY; |
| p->msg.arg0 = local; |
| p->msg.arg1 = remote; |
| send_packet(p, t); |
| } |
| |
| static void send_close(unsigned local, unsigned remote, atransport *t) |
| { |
| D("Calling send_close"); |
| apacket *p = get_apacket(); |
| p->msg.command = A_CLSE; |
| p->msg.arg0 = local; |
| p->msg.arg1 = remote; |
| send_packet(p, t); |
| } |
| |
| std::string get_connection_string() { |
| std::vector<std::string> connection_properties; |
| |
| #if !ADB_HOST |
| static const char* cnxn_props[] = { |
| "ro.product.name", |
| "ro.product.model", |
| "ro.product.device", |
| }; |
| |
| for (const auto& prop_name : cnxn_props) { |
| char value[PROPERTY_VALUE_MAX]; |
| property_get(prop_name, value, ""); |
| connection_properties.push_back( |
| android::base::StringPrintf("%s=%s", prop_name, value)); |
| } |
| #endif |
| |
| connection_properties.push_back(android::base::StringPrintf( |
| "features=%s", FeatureSetToString(supported_features()).c_str())); |
| |
| return android::base::StringPrintf( |
| "%s::%s", adb_device_banner, |
| android::base::Join(connection_properties, ';').c_str()); |
| } |
| |
| void send_connect(atransport* t) { |
| D("Calling send_connect"); |
| apacket* cp = get_apacket(); |
| cp->msg.command = A_CNXN; |
| cp->msg.arg0 = t->get_protocol_version(); |
| cp->msg.arg1 = t->get_max_payload(); |
| |
| std::string connection_str = get_connection_string(); |
| // Connect and auth packets are limited to MAX_PAYLOAD_V1 because we don't |
| // yet know how much data the other size is willing to accept. |
| if (connection_str.length() > MAX_PAYLOAD_V1) { |
| LOG(FATAL) << "Connection banner is too long (length = " |
| << connection_str.length() << ")"; |
| } |
| |
| memcpy(cp->data, connection_str.c_str(), connection_str.length()); |
| cp->msg.data_length = connection_str.length(); |
| |
| send_packet(cp, t); |
| } |
| |
| // qual_overwrite is used to overwrite a qualifier string. dst is a |
| // pointer to a char pointer. It is assumed that if *dst is non-NULL, it |
| // was malloc'ed and needs to freed. *dst will be set to a dup of src. |
| // TODO: switch to std::string for these atransport fields instead. |
| static void qual_overwrite(char** dst, const std::string& src) { |
| free(*dst); |
| *dst = strdup(src.c_str()); |
| } |
| |
| void parse_banner(const std::string& banner, atransport* t) { |
| D("parse_banner: %s", banner.c_str()); |
| |
| // The format is something like: |
| // "device::ro.product.name=x;ro.product.model=y;ro.product.device=z;". |
| std::vector<std::string> pieces = android::base::Split(banner, ":"); |
| |
| if (pieces.size() > 2) { |
| const std::string& props = pieces[2]; |
| for (auto& prop : android::base::Split(props, ";")) { |
| // The list of properties was traditionally ;-terminated rather than ;-separated. |
| if (prop.empty()) continue; |
| |
| std::vector<std::string> key_value = android::base::Split(prop, "="); |
| if (key_value.size() != 2) continue; |
| |
| const std::string& key = key_value[0]; |
| const std::string& value = key_value[1]; |
| if (key == "ro.product.name") { |
| qual_overwrite(&t->product, value); |
| } else if (key == "ro.product.model") { |
| qual_overwrite(&t->model, value); |
| } else if (key == "ro.product.device") { |
| qual_overwrite(&t->device, value); |
| } else if (key == "features") { |
| t->SetFeatures(value); |
| } |
| } |
| } |
| |
| const std::string& type = pieces[0]; |
| if (type == "bootloader") { |
| D("setting connection_state to kCsBootloader"); |
| t->connection_state = kCsBootloader; |
| update_transports(); |
| } else if (type == "device") { |
| D("setting connection_state to kCsDevice"); |
| t->connection_state = kCsDevice; |
| update_transports(); |
| } else if (type == "recovery") { |
| D("setting connection_state to kCsRecovery"); |
| t->connection_state = kCsRecovery; |
| update_transports(); |
| } else if (type == "sideload") { |
| D("setting connection_state to kCsSideload"); |
| t->connection_state = kCsSideload; |
| update_transports(); |
| } else { |
| D("setting connection_state to kCsHost"); |
| t->connection_state = kCsHost; |
| } |
| } |
| |
| static void handle_new_connection(atransport* t, apacket* p) { |
| if (t->connection_state != kCsOffline) { |
| t->connection_state = kCsOffline; |
| handle_offline(t); |
| } |
| |
| t->update_version(p->msg.arg0, p->msg.arg1); |
| std::string banner(reinterpret_cast<const char*>(p->data), |
| p->msg.data_length); |
| parse_banner(banner, t); |
| |
| #if ADB_HOST |
| handle_online(t); |
| #else |
| if (!auth_required) { |
| handle_online(t); |
| send_connect(t); |
| } else { |
| send_auth_request(t); |
| } |
| #endif |
| } |
| |
| void handle_packet(apacket *p, atransport *t) |
| { |
| asocket *s; |
| |
| D("handle_packet() %c%c%c%c", ((char*) (&(p->msg.command)))[0], |
| ((char*) (&(p->msg.command)))[1], |
| ((char*) (&(p->msg.command)))[2], |
| ((char*) (&(p->msg.command)))[3]); |
| print_packet("recv", p); |
| |
| switch(p->msg.command){ |
| case A_SYNC: |
| if(p->msg.arg0){ |
| send_packet(p, t); |
| #if ADB_HOST |
| send_connect(t); |
| #endif |
| } else { |
| t->connection_state = kCsOffline; |
| handle_offline(t); |
| send_packet(p, t); |
| } |
| return; |
| |
| case A_CNXN: // CONNECT(version, maxdata, "system-id-string") |
| handle_new_connection(t, p); |
| break; |
| |
| case A_AUTH: |
| if (p->msg.arg0 == ADB_AUTH_TOKEN) { |
| t->connection_state = kCsUnauthorized; |
| t->key = adb_auth_nextkey(t->key); |
| if (t->key) { |
| send_auth_response(p->data, p->msg.data_length, t); |
| } else { |
| /* No more private keys to try, send the public key */ |
| send_auth_publickey(t); |
| } |
| } else if (p->msg.arg0 == ADB_AUTH_SIGNATURE) { |
| if (adb_auth_verify(t->token, p->data, p->msg.data_length)) { |
| adb_auth_verified(t); |
| t->failed_auth_attempts = 0; |
| } else { |
| if (t->failed_auth_attempts++ > 10) |
| adb_sleep_ms(1000); |
| send_auth_request(t); |
| } |
| } else if (p->msg.arg0 == ADB_AUTH_RSAPUBLICKEY) { |
| adb_auth_confirm_key(p->data, p->msg.data_length, t); |
| } |
| break; |
| |
| case A_OPEN: /* OPEN(local-id, 0, "destination") */ |
| if (t->online && p->msg.arg0 != 0 && p->msg.arg1 == 0) { |
| char *name = (char*) p->data; |
| name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0; |
| s = create_local_service_socket(name, t); |
| if(s == 0) { |
| send_close(0, p->msg.arg0, t); |
| } else { |
| s->peer = create_remote_socket(p->msg.arg0, t); |
| s->peer->peer = s; |
| send_ready(s->id, s->peer->id, t); |
| s->ready(s); |
| } |
| } |
| break; |
| |
| case A_OKAY: /* READY(local-id, remote-id, "") */ |
| if (t->online && p->msg.arg0 != 0 && p->msg.arg1 != 0) { |
| if((s = find_local_socket(p->msg.arg1, 0))) { |
| if(s->peer == 0) { |
| /* On first READY message, create the connection. */ |
| s->peer = create_remote_socket(p->msg.arg0, t); |
| s->peer->peer = s; |
| s->ready(s); |
| } else if (s->peer->id == p->msg.arg0) { |
| /* Other READY messages must use the same local-id */ |
| s->ready(s); |
| } else { |
| D("Invalid A_OKAY(%d,%d), expected A_OKAY(%d,%d) on transport %s", |
| p->msg.arg0, p->msg.arg1, s->peer->id, p->msg.arg1, t->serial); |
| } |
| } |
| } |
| break; |
| |
| case A_CLSE: /* CLOSE(local-id, remote-id, "") or CLOSE(0, remote-id, "") */ |
| if (t->online && p->msg.arg1 != 0) { |
| if((s = find_local_socket(p->msg.arg1, p->msg.arg0))) { |
| /* According to protocol.txt, p->msg.arg0 might be 0 to indicate |
| * a failed OPEN only. However, due to a bug in previous ADB |
| * versions, CLOSE(0, remote-id, "") was also used for normal |
| * CLOSE() operations. |
| * |
| * This is bad because it means a compromised adbd could |
| * send packets to close connections between the host and |
| * other devices. To avoid this, only allow this if the local |
| * socket has a peer on the same transport. |
| */ |
| if (p->msg.arg0 == 0 && s->peer && s->peer->transport != t) { |
| D("Invalid A_CLSE(0, %u) from transport %s, expected transport %s", |
| p->msg.arg1, t->serial, s->peer->transport->serial); |
| } else { |
| s->close(s); |
| } |
| } |
| } |
| break; |
| |
| case A_WRTE: /* WRITE(local-id, remote-id, <data>) */ |
| if (t->online && p->msg.arg0 != 0 && p->msg.arg1 != 0) { |
| if((s = find_local_socket(p->msg.arg1, p->msg.arg0))) { |
| unsigned rid = p->msg.arg0; |
| p->len = p->msg.data_length; |
| |
| if(s->enqueue(s, p) == 0) { |
| D("Enqueue the socket"); |
| send_ready(s->id, rid, t); |
| } |
| return; |
| } |
| } |
| break; |
| |
| default: |
| printf("handle_packet: what is %08x?!\n", p->msg.command); |
| } |
| |
| put_apacket(p); |
| } |
| |
| #if ADB_HOST |
| |
| #ifdef _WIN32 |
| |
| // Try to make a handle non-inheritable and if there is an error, don't output |
| // any error info, but leave GetLastError() for the caller to read. This is |
| // convenient if the caller is expecting that this may fail and they'd like to |
| // ignore such a failure. |
| static bool _try_make_handle_noninheritable(HANDLE h) { |
| if (h != INVALID_HANDLE_VALUE && h != NULL) { |
| return SetHandleInformation(h, HANDLE_FLAG_INHERIT, 0) ? true : false; |
| } |
| |
| return true; |
| } |
| |
| // Try to make a handle non-inheritable with the expectation that this should |
| // succeed, so if this fails, output error info. |
| static bool _make_handle_noninheritable(HANDLE h) { |
| if (!_try_make_handle_noninheritable(h)) { |
| // Show the handle value to give us a clue in case we have problems |
| // with pseudo-handle values. |
| fprintf(stderr, "Cannot make handle 0x%p non-inheritable: %s\n", |
| h, SystemErrorCodeToString(GetLastError()).c_str()); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| // Create anonymous pipe, preventing inheritance of the read pipe and setting |
| // security of the write pipe to sa. |
| static bool _create_anonymous_pipe(unique_handle* pipe_read_out, |
| unique_handle* pipe_write_out, |
| SECURITY_ATTRIBUTES* sa) { |
| HANDLE pipe_read_raw = NULL; |
| HANDLE pipe_write_raw = NULL; |
| if (!CreatePipe(&pipe_read_raw, &pipe_write_raw, sa, 0)) { |
| fprintf(stderr, "Cannot create pipe: %s\n", |
| SystemErrorCodeToString(GetLastError()).c_str()); |
| return false; |
| } |
| |
| unique_handle pipe_read(pipe_read_raw); |
| pipe_read_raw = NULL; |
| unique_handle pipe_write(pipe_write_raw); |
| pipe_write_raw = NULL; |
| |
| if (!_make_handle_noninheritable(pipe_read.get())) { |
| return false; |
| } |
| |
| *pipe_read_out = std::move(pipe_read); |
| *pipe_write_out = std::move(pipe_write); |
| |
| return true; |
| } |
| |
| // Read from a pipe (that we take ownership of) and write what is returned to |
| // GetStdHandle(nStdHandle). Return on error or when the pipe is closed. |
| static unsigned _redirect_pipe_thread(HANDLE h, DWORD nStdHandle) { |
| // Take ownership of the HANDLE and close when we're done. |
| unique_handle read_pipe(h); |
| const HANDLE write_handle = GetStdHandle(nStdHandle); |
| const char* output_name = nStdHandle == STD_OUTPUT_HANDLE ? |
| "stdout" : "stderr"; |
| |
| while (true) { |
| char buf[64 * 1024]; |
| DWORD bytes_read = 0; |
| if (!ReadFile(read_pipe.get(), buf, sizeof(buf), &bytes_read, NULL)) { |
| const DWORD err = GetLastError(); |
| // ERROR_BROKEN_PIPE is expected when the subprocess closes |
| // the other end of the pipe. |
| if (err == ERROR_BROKEN_PIPE) { |
| return EXIT_SUCCESS; |
| } else { |
| fprintf(stderr, "Failed to read from %s: %s\n", output_name, |
| SystemErrorCodeToString(err).c_str()); |
| return EXIT_FAILURE; |
| } |
| } |
| |
| // Don't try to write if our stdout/stderr was not setup by the |
| // parent process. |
| if (write_handle != NULL && write_handle != INVALID_HANDLE_VALUE) { |
| DWORD bytes_written = 0; |
| if (!WriteFile(write_handle, buf, bytes_read, &bytes_written, |
| NULL)) { |
| fprintf(stderr, "Failed to write to %s: %s\n", output_name, |
| SystemErrorCodeToString(GetLastError()).c_str()); |
| return EXIT_FAILURE; |
| } |
| |
| if (bytes_written != bytes_read) { |
| fprintf(stderr, "Only wrote %lu of %lu bytes to %s\n", |
| bytes_written, bytes_read, output_name); |
| return EXIT_FAILURE; |
| } |
| } |
| } |
| } |
| |
| static unsigned __stdcall _redirect_stdout_thread(HANDLE h) { |
| adb_thread_setname("stdout redirect"); |
| return _redirect_pipe_thread(h, STD_OUTPUT_HANDLE); |
| } |
| |
| static unsigned __stdcall _redirect_stderr_thread(HANDLE h) { |
| adb_thread_setname("stderr redirect"); |
| return _redirect_pipe_thread(h, STD_ERROR_HANDLE); |
| } |
| |
| #endif |
| |
| int launch_server(int server_port) |
| { |
| #if defined(_WIN32) |
| /* we need to start the server in the background */ |
| /* we create a PIPE that will be used to wait for the server's "OK" */ |
| /* message since the pipe handles must be inheritable, we use a */ |
| /* security attribute */ |
| SECURITY_ATTRIBUTES sa; |
| sa.nLength = sizeof(sa); |
| sa.lpSecurityDescriptor = NULL; |
| sa.bInheritHandle = TRUE; |
| |
| // Redirect stdin to Windows /dev/null. If we instead pass an original |
| // stdin/stdout/stderr handle and it is a console handle, when the adb |
| // server starts up, the C Runtime will see a console handle for a process |
| // that isn't connected to a console and it will configure |
| // stdin/stdout/stderr to be closed. At that point, freopen() could be used |
| // to reopen stderr/out, but it would take more massaging to fixup the file |
| // descriptor number that freopen() uses. It's simplest to avoid all of this |
| // complexity by just redirecting stdin to `nul' and then the C Runtime acts |
| // as expected. |
| unique_handle nul_read(CreateFileW(L"nul", GENERIC_READ, |
| FILE_SHARE_READ | FILE_SHARE_WRITE, &sa, OPEN_EXISTING, |
| FILE_ATTRIBUTE_NORMAL, NULL)); |
| if (nul_read.get() == INVALID_HANDLE_VALUE) { |
| fprintf(stderr, "Cannot open 'nul': %s\n", |
| SystemErrorCodeToString(GetLastError()).c_str()); |
| return -1; |
| } |
| |
| // create pipes with non-inheritable read handle, inheritable write handle |
| unique_handle ack_read, ack_write; |
| if (!_create_anonymous_pipe(&ack_read, &ack_write, &sa)) { |
| return -1; |
| } |
| unique_handle stdout_read, stdout_write; |
| if (!_create_anonymous_pipe(&stdout_read, &stdout_write, &sa)) { |
| return -1; |
| } |
| unique_handle stderr_read, stderr_write; |
| if (!_create_anonymous_pipe(&stderr_read, &stderr_write, &sa)) { |
| return -1; |
| } |
| |
| /* Some programs want to launch an adb command and collect its output by |
| * calling CreateProcess with inheritable stdout/stderr handles, then |
| * using read() to get its output. When this happens, the stdout/stderr |
| * handles passed to the adb client process will also be inheritable. |
| * When starting the adb server here, care must be taken to reset them |
| * to non-inheritable. |
| * Otherwise, something bad happens: even if the adb command completes, |
| * the calling process is stuck while read()-ing from the stdout/stderr |
| * descriptors, because they're connected to corresponding handles in the |
| * adb server process (even if the latter never uses/writes to them). |
| * Note that even if we don't pass these handles in the STARTUPINFO struct, |
| * if they're marked inheritable, they're still inherited, requiring us to |
| * deal with this. |
| * |
| * If we're still having problems with inheriting random handles in the |
| * future, consider using PROC_THREAD_ATTRIBUTE_HANDLE_LIST to explicitly |
| * specify which handles should be inherited: http://blogs.msdn.com/b/oldnewthing/archive/2011/12/16/10248328.aspx |
| * |
| * Older versions of Windows return console pseudo-handles that cannot be |
| * made non-inheritable, so ignore those failures. |
| */ |
| _try_make_handle_noninheritable(GetStdHandle(STD_INPUT_HANDLE)); |
| _try_make_handle_noninheritable(GetStdHandle(STD_OUTPUT_HANDLE)); |
| _try_make_handle_noninheritable(GetStdHandle(STD_ERROR_HANDLE)); |
| |
| STARTUPINFOW startup; |
| ZeroMemory( &startup, sizeof(startup) ); |
| startup.cb = sizeof(startup); |
| startup.hStdInput = nul_read.get(); |
| startup.hStdOutput = stdout_write.get(); |
| startup.hStdError = stderr_write.get(); |
| startup.dwFlags = STARTF_USESTDHANDLES; |
| |
| // Verify that the pipe_write handle value can be passed on the command line |
| // as %d and that the rest of adb code can pass it around in an int. |
| const int ack_write_as_int = cast_handle_to_int(ack_write.get()); |
| if (cast_int_to_handle(ack_write_as_int) != ack_write.get()) { |
| // If this fires, either handle values are larger than 32-bits or else |
| // there is a bug in our casting. |
| // https://msdn.microsoft.com/en-us/library/windows/desktop/aa384203%28v=vs.85%29.aspx |
| fprintf(stderr, "Cannot fit pipe handle value into 32-bits: 0x%p\n", |
| ack_write.get()); |
| return -1; |
| } |
| |
| // get path of current program |
| WCHAR program_path[MAX_PATH]; |
| const DWORD module_result = GetModuleFileNameW(NULL, program_path, |
| arraysize(program_path)); |
| if ((module_result >= arraysize(program_path)) || (module_result == 0)) { |
| // String truncation or some other error. |
| fprintf(stderr, "Cannot get executable path: %s\n", |
| SystemErrorCodeToString(GetLastError()).c_str()); |
| return -1; |
| } |
| |
| WCHAR args[64]; |
| snwprintf(args, arraysize(args), |
| L"adb -P %d fork-server server --reply-fd %d", server_port, |
| ack_write_as_int); |
| |
| PROCESS_INFORMATION pinfo; |
| ZeroMemory(&pinfo, sizeof(pinfo)); |
| |
| if (!CreateProcessW( |
| program_path, /* program path */ |
| args, |
| /* the fork-server argument will set the |
| debug = 2 in the child */ |
| NULL, /* process handle is not inheritable */ |
| NULL, /* thread handle is not inheritable */ |
| TRUE, /* yes, inherit some handles */ |
| DETACHED_PROCESS, /* the new process doesn't have a console */ |
| NULL, /* use parent's environment block */ |
| NULL, /* use parent's starting directory */ |
| &startup, /* startup info, i.e. std handles */ |
| &pinfo )) { |
| fprintf(stderr, "Cannot create process: %s\n", |
| SystemErrorCodeToString(GetLastError()).c_str()); |
| return -1; |
| } |
| |
| unique_handle process_handle(pinfo.hProcess); |
| pinfo.hProcess = NULL; |
| |
| // Close handles that we no longer need to complete the rest. |
| CloseHandle(pinfo.hThread); |
| pinfo.hThread = NULL; |
| |
| nul_read.reset(); |
| ack_write.reset(); |
| stdout_write.reset(); |
| stderr_write.reset(); |
| |
| // Start threads to read from subprocess stdout/stderr and write to ours |
| // to make subprocess errors easier to diagnose. |
| |
| // In the past, reading from a pipe before the child process's C Runtime |
| // started up and called GetFileType() caused a hang: http://blogs.msdn.com/b/oldnewthing/archive/2011/12/02/10243553.aspx#10244216 |
| // This is reportedly fixed in Windows Vista: https://support.microsoft.com/en-us/kb/2009703 |
| // I was unable to reproduce the problem on Windows XP. It sounds like a |
| // Windows Update may have fixed this: https://www.duckware.com/tech/peeknamedpipe.html |
| unique_handle stdout_thread(reinterpret_cast<HANDLE>( |
| _beginthreadex(NULL, 0, _redirect_stdout_thread, stdout_read.get(), |
| 0, NULL))); |
| if (stdout_thread.get() == nullptr) { |
| fprintf(stderr, "Cannot create thread: %s\n", strerror(errno)); |
| return -1; |
| } |
| stdout_read.release(); // Transfer ownership to new thread |
| |
| unique_handle stderr_thread(reinterpret_cast<HANDLE>( |
| _beginthreadex(NULL, 0, _redirect_stderr_thread, stderr_read.get(), |
| 0, NULL))); |
| if (stderr_thread.get() == nullptr) { |
| fprintf(stderr, "Cannot create thread: %s\n", strerror(errno)); |
| return -1; |
| } |
| stderr_read.release(); // Transfer ownership to new thread |
| |
| bool got_ack = false; |
| |
| // Wait for the "OK\n" message, for the pipe to be closed, or other error. |
| { |
| char temp[3]; |
| DWORD count = 0; |
| |
| if (ReadFile(ack_read.get(), temp, sizeof(temp), &count, NULL)) { |
| const CHAR expected[] = "OK\n"; |
| const DWORD expected_length = arraysize(expected) - 1; |
| if (count == expected_length && |
| memcmp(temp, expected, expected_length) == 0) { |
| got_ack = true; |
| } else { |
| fprintf(stderr, "ADB server didn't ACK\n"); |
| } |
| } else { |
| const DWORD err = GetLastError(); |
| // If the ACK was not written and the process exited, GetLastError() |
| // is probably ERROR_BROKEN_PIPE, in which case that info is not |
| // useful to the user. |
| fprintf(stderr, "could not read ok from ADB Server%s\n", |
| err == ERROR_BROKEN_PIPE ? "" : |
| android::base::StringPrintf(": %s", |
| SystemErrorCodeToString(err).c_str()).c_str()); |
| } |
| } |
| |
| // Always try to wait a bit for threads reading stdout/stderr to finish. |
| // If the process started ok, it should close the pipes causing the threads |
| // to finish. If the process had an error, it should exit, also causing |
| // the pipes to be closed. In that case we want to read all of the output |
| // and write it out so that the user can diagnose failures. |
| const DWORD thread_timeout_ms = 15 * 1000; |
| const HANDLE threads[] = { stdout_thread.get(), stderr_thread.get() }; |
| const DWORD wait_result = WaitForMultipleObjects(arraysize(threads), |
| threads, TRUE, thread_timeout_ms); |
| if (wait_result == WAIT_TIMEOUT) { |
| // Threads did not finish after waiting a little while. Perhaps the |
| // server didn't close pipes, or it is hung. |
| fprintf(stderr, "Timed-out waiting for threads to finish reading from " |
| "ADB Server\n"); |
| // Process handles are signaled when the process exits, so if we wait |
| // on the handle for 0 seconds and it returns 'timeout', that means that |
| // the process is still running. |
| if (WaitForSingleObject(process_handle.get(), 0) == WAIT_TIMEOUT) { |
| // We could TerminateProcess(), but that seems somewhat presumptive. |
| fprintf(stderr, "ADB Server is running: process id %lu\n", |
| pinfo.dwProcessId); |
| } |
| return -1; |
| } |
| |
| if (wait_result != WAIT_OBJECT_0) { |
| fprintf(stderr, "Unexpected result waiting for threads: %lu: %s\n", |
| wait_result, SystemErrorCodeToString(GetLastError()).c_str()); |
| return -1; |
| } |
| |
| // For now ignore the thread exit codes and assume they worked properly. |
| |
| if (!got_ack) { |
| return -1; |
| } |
| #else /* !defined(_WIN32) */ |
| char path[PATH_MAX]; |
| int fd[2]; |
| |
| // set up a pipe so the child can tell us when it is ready. |
| // fd[0] will be parent's end, and the child will write on fd[1] |
| if (pipe(fd)) { |
| fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno); |
| return -1; |
| } |
| get_my_path(path, PATH_MAX); |
| pid_t pid = fork(); |
| if(pid < 0) return -1; |
| |
| if (pid == 0) { |
| // child side of the fork |
| |
| adb_close(fd[0]); |
| |
| char str_port[30]; |
| snprintf(str_port, sizeof(str_port), "%d", server_port); |
| char reply_fd[30]; |
| snprintf(reply_fd, sizeof(reply_fd), "%d", fd[1]); |
| // child process |
| int result = execl(path, "adb", "-P", str_port, "fork-server", "server", "--reply-fd", reply_fd, NULL); |
| // this should not return |
| fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno); |
| } else { |
| // parent side of the fork |
| |
| char temp[3]; |
| |
| temp[0] = 'A'; temp[1] = 'B'; temp[2] = 'C'; |
| // wait for the "OK\n" message |
| adb_close(fd[1]); |
| int ret = adb_read(fd[0], temp, 3); |
| int saved_errno = errno; |
| adb_close(fd[0]); |
| if (ret < 0) { |
| fprintf(stderr, "could not read ok from ADB Server, errno = %d\n", saved_errno); |
| return -1; |
| } |
| if (ret != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') { |
| fprintf(stderr, "ADB server didn't ACK\n" ); |
| return -1; |
| } |
| |
| setsid(); |
| } |
| #endif /* !defined(_WIN32) */ |
| return 0; |
| } |
| #endif /* ADB_HOST */ |
| |
| // Try to handle a network forwarding request. |
| // This returns 1 on success, 0 on failure, and -1 to indicate this is not |
| // a forwarding-related request. |
| int handle_forward_request(const char* service, TransportType type, const char* serial, int reply_fd) |
| { |
| if (!strcmp(service, "list-forward")) { |
| // Create the list of forward redirections. |
| std::string listeners = format_listeners(); |
| #if ADB_HOST |
| SendOkay(reply_fd); |
| #endif |
| SendProtocolString(reply_fd, listeners); |
| return 1; |
| } |
| |
| if (!strcmp(service, "killforward-all")) { |
| remove_all_listeners(); |
| #if ADB_HOST |
| /* On the host: 1st OKAY is connect, 2nd OKAY is status */ |
| SendOkay(reply_fd); |
| #endif |
| SendOkay(reply_fd); |
| return 1; |
| } |
| |
| if (!strncmp(service, "forward:", 8) || !strncmp(service, "killforward:", 12)) { |
| // killforward:local |
| // forward:(norebind:)?local;remote |
| bool kill_forward = false; |
| bool no_rebind = false; |
| if (android::base::StartsWith(service, "killforward:")) { |
| kill_forward = true; |
| service += 12; |
| } else { |
| service += 8; // skip past "forward:" |
| if (android::base::StartsWith(service, "norebind:")) { |
| no_rebind = true; |
| service += 9; |
| } |
| } |
| |
| std::vector<std::string> pieces = android::base::Split(service, ";"); |
| |
| if (kill_forward) { |
| // Check killforward: parameter format: '<local>' |
| if (pieces.size() != 1 || pieces[0].empty()) { |
| SendFail(reply_fd, android::base::StringPrintf("bad killforward: %s", service)); |
| return 1; |
| } |
| } else { |
| // Check forward: parameter format: '<local>;<remote>' |
| if (pieces.size() != 2 || pieces[0].empty() || pieces[1].empty() || pieces[1][0] == '*') { |
| SendFail(reply_fd, android::base::StringPrintf("bad forward: %s", service)); |
| return 1; |
| } |
| } |
| |
| std::string error_msg; |
| atransport* transport = acquire_one_transport(kCsAny, type, serial, &error_msg); |
| if (!transport) { |
| SendFail(reply_fd, error_msg); |
| return 1; |
| } |
| |
| std::string error; |
| InstallStatus r; |
| if (kill_forward) { |
| r = remove_listener(pieces[0].c_str(), transport); |
| } else { |
| r = install_listener(pieces[0], pieces[1].c_str(), transport, |
| no_rebind, &error); |
| } |
| if (r == INSTALL_STATUS_OK) { |
| #if ADB_HOST |
| /* On the host: 1st OKAY is connect, 2nd OKAY is status */ |
| SendOkay(reply_fd); |
| #endif |
| SendOkay(reply_fd); |
| return 1; |
| } |
| |
| std::string message; |
| switch (r) { |
| case INSTALL_STATUS_OK: message = "success (!)"; break; |
| case INSTALL_STATUS_INTERNAL_ERROR: message = "internal error"; break; |
| case INSTALL_STATUS_CANNOT_BIND: |
| message = android::base::StringPrintf("cannot bind listener: %s", |
| error.c_str()); |
| break; |
| case INSTALL_STATUS_CANNOT_REBIND: |
| message = android::base::StringPrintf("cannot rebind existing socket"); |
| break; |
| case INSTALL_STATUS_LISTENER_NOT_FOUND: |
| message = android::base::StringPrintf("listener '%s' not found", service); |
| break; |
| } |
| SendFail(reply_fd, message); |
| return 1; |
| } |
| return 0; |
| } |
| |
| #if ADB_HOST |
| static int SendOkay(int fd, const std::string& s) { |
| SendOkay(fd); |
| SendProtocolString(fd, s); |
| return 0; |
| } |
| #endif |
| |
| int handle_host_request(const char* service, TransportType type, |
| const char* serial, int reply_fd, asocket* s) { |
| if (strcmp(service, "kill") == 0) { |
| fprintf(stderr, "adb server killed by remote request\n"); |
| fflush(stdout); |
| SendOkay(reply_fd); |
| |
| // At least on Windows, if we exit() without shutdown(SD_SEND) or |
| // closesocket(), the client's next recv() will error-out with |
| // WSAECONNRESET and they'll never read the OKAY. |
| adb_shutdown(reply_fd); |
| |
| exit(0); |
| } |
| |
| #if ADB_HOST |
| // "transport:" is used for switching transport with a specified serial number |
| // "transport-usb:" is used for switching transport to the only USB transport |
| // "transport-local:" is used for switching transport to the only local transport |
| // "transport-any:" is used for switching transport to the only transport |
| if (!strncmp(service, "transport", strlen("transport"))) { |
| TransportType type = kTransportAny; |
| |
| if (!strncmp(service, "transport-usb", strlen("transport-usb"))) { |
| type = kTransportUsb; |
| } else if (!strncmp(service, "transport-local", strlen("transport-local"))) { |
| type = kTransportLocal; |
| } else if (!strncmp(service, "transport-any", strlen("transport-any"))) { |
| type = kTransportAny; |
| } else if (!strncmp(service, "transport:", strlen("transport:"))) { |
| service += strlen("transport:"); |
| serial = service; |
| } |
| |
| std::string error_msg; |
| atransport* t = acquire_one_transport(kCsAny, type, serial, &error_msg); |
| if (t != nullptr) { |
| s->transport = t; |
| SendOkay(reply_fd); |
| } else { |
| SendFail(reply_fd, error_msg); |
| } |
| return 1; |
| } |
| |
| // return a list of all connected devices |
| if (!strncmp(service, "devices", 7)) { |
| bool long_listing = (strcmp(service+7, "-l") == 0); |
| if (long_listing || service[7] == 0) { |
| D("Getting device list..."); |
| std::string device_list = list_transports(long_listing); |
| D("Sending device list..."); |
| return SendOkay(reply_fd, device_list); |
| } |
| return 1; |
| } |
| |
| if (!strcmp(service, "features")) { |
| std::string error_msg; |
| atransport* t = acquire_one_transport(kCsAny, type, serial, &error_msg); |
| if (t != nullptr) { |
| SendOkay(reply_fd, FeatureSetToString(t->features())); |
| } else { |
| SendFail(reply_fd, error_msg); |
| } |
| return 0; |
| } |
| |
| // remove TCP transport |
| if (!strncmp(service, "disconnect:", 11)) { |
| const std::string address(service + 11); |
| if (address.empty()) { |
| kick_all_tcp_devices(); |
| return SendOkay(reply_fd, "disconnected everything"); |
| } |
| |
| std::string serial; |
| std::string host; |
| int port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT; |
| std::string error; |
| if (!parse_host_and_port(address, &serial, &host, &port, &error)) { |
| return SendFail(reply_fd, android::base::StringPrintf("couldn't parse '%s': %s", |
| address.c_str(), error.c_str())); |
| } |
| atransport* t = find_transport(serial.c_str()); |
| if (t == nullptr) { |
| return SendFail(reply_fd, android::base::StringPrintf("no such device '%s'", |
| serial.c_str())); |
| } |
| kick_transport(t); |
| return SendOkay(reply_fd, android::base::StringPrintf("disconnected %s", address.c_str())); |
| } |
| |
| // returns our value for ADB_SERVER_VERSION |
| if (!strcmp(service, "version")) { |
| return SendOkay(reply_fd, android::base::StringPrintf("%04x", ADB_SERVER_VERSION)); |
| } |
| |
| // These always report "unknown" rather than the actual error, for scripts. |
| if (!strcmp(service, "get-serialno")) { |
| std::string ignored; |
| atransport* t = acquire_one_transport(kCsAny, type, serial, &ignored); |
| return SendOkay(reply_fd, (t && t->serial) ? t->serial : "unknown"); |
| } |
| if (!strcmp(service, "get-devpath")) { |
| std::string ignored; |
| atransport* t = acquire_one_transport(kCsAny, type, serial, &ignored); |
| return SendOkay(reply_fd, (t && t->devpath) ? t->devpath : "unknown"); |
| } |
| if (!strcmp(service, "get-state")) { |
| std::string ignored; |
| atransport* t = acquire_one_transport(kCsAny, type, serial, &ignored); |
| return SendOkay(reply_fd, t ? t->connection_state_name() : "unknown"); |
| } |
| |
| // indicates a new emulator instance has started |
| if (!strncmp(service, "emulator:", 9)) { |
| int port = atoi(service+9); |
| local_connect(port); |
| /* we don't even need to send a reply */ |
| return 0; |
| } |
| #endif // ADB_HOST |
| |
| int ret = handle_forward_request(service, type, serial, reply_fd); |
| if (ret >= 0) |
| return ret - 1; |
| return -1; |
| } |