~SyncConnection() {
if (!IsValid()) return;
if (SendQuit()) {
// We sent a quit command, so the server should be doing orderly
// shutdown soon. But if we encountered an error while we were using
// the connection, the server might still be sending data (before
// doing orderly shutdown), in which case we won't wait for all of
// the data nor the coming orderly shutdown. In the common success
// case, this will wait for the server to do orderly shutdown.
ReadOrderlyShutdown(fd);
}
line_printer_.KeepInfoLine();
}
bool adb_query(const std::string& service, std::string* result, std::string* error) {
D("adb_query: %s", service.c_str());
int fd = adb_connect(service, error);
if (fd < 0) {
return false;
}
result->clear();
if (!ReadProtocolString(fd, result, error)) {
adb_close(fd);
return false;
}
ReadOrderlyShutdown(fd);
adb_close(fd);
return true;
}
bool adb_command(const std::string& service) {
std::string error;
int fd = adb_connect(service, &error);
if (fd < 0) {
fprintf(stderr, "error: %s\n", error.c_str());
return false;
}
if (!adb_status(fd, &error)) {
fprintf(stderr, "error: %s\n", error.c_str());
adb_close(fd);
return false;
}
ReadOrderlyShutdown(fd);
adb_close(fd);
return true;
}
bool adb_kill_server() {
D("adb_kill_server");
std::string reason;
int fd = socket_spec_connect(__adb_server_socket_spec, &reason);
if (fd < 0) {
fprintf(stderr, "cannot connect to daemon at %s: %s\n", __adb_server_socket_spec,
reason.c_str());
return true;
}
if (!SendProtocolString(fd, "host:kill")) {
fprintf(stderr, "error: write failure during connection: %s\n", strerror(errno));
return false;
}
// The server might send OKAY, so consume that.
char buf[4];
ReadFdExactly(fd, buf, 4);
// Now that no more data is expected, wait for socket orderly shutdown or error, indicating
// server death.
ReadOrderlyShutdown(fd);
return true;
}
int adb_connect(const std::string& service, std::string* error) {
// first query the adb server's version
int fd = _adb_connect("host:version", error);
D("adb_connect: service %s", service.c_str());
if (fd == -2 && __adb_server_name) {
fprintf(stderr,"** Cannot start server on remote host\n");
// error is the original network connection error
return fd;
} else if (fd == -2) {
fprintf(stdout,"* daemon not running. starting it now on port %d *\n",
__adb_server_port);
start_server:
if (launch_server(__adb_server_port)) {
fprintf(stderr,"* failed to start daemon *\n");
// launch_server() has already printed detailed error info, so just
// return a generic error string about the overall adb_connect()
// that the caller requested.
*error = "cannot connect to daemon";
return -1;
} else {
fprintf(stdout,"* daemon started successfully *\n");
}
/* give the server some time to start properly and detect devices */
adb_sleep_ms(3000);
// fall through to _adb_connect
} else {
// If a server is already running, check its version matches.
int version = ADB_SERVER_VERSION - 1;
// If we have a file descriptor, then parse version result.
if (fd >= 0) {
std::string version_string;
if (!ReadProtocolString(fd, &version_string, error)) {
adb_close(fd);
return -1;
}
ReadOrderlyShutdown(fd);
adb_close(fd);
if (sscanf(&version_string[0], "%04x", &version) != 1) {
*error = android::base::StringPrintf("cannot parse version string: %s",
version_string.c_str());
return -1;
}
} else {
// If fd is -1 check for "unknown host service" which would
// indicate a version of adb that does not support the
// version command, in which case we should fall-through to kill it.
if (*error != "unknown host service") {
return fd;
}
}
if (version != ADB_SERVER_VERSION) {
printf("adb server version (%d) doesn't match this client (%d); killing...\n",
version, ADB_SERVER_VERSION);
fd = _adb_connect("host:kill", error);
if (fd >= 0) {
ReadOrderlyShutdown(fd);
adb_close(fd);
} else {
// If we couldn't connect to the server or had some other error,
// report it, but still try to start the server.
fprintf(stderr, "error: %s\n", error->c_str());
}
/* XXX can we better detect its death? */
adb_sleep_ms(2000);
goto start_server;
}
}
// if the command is start-server, we are done.
if (service == "host:start-server") {
return 0;
}
fd = _adb_connect(service, error);
if (fd == -1) {
D("_adb_connect error: %s", error->c_str());
} else if(fd == -2) {
fprintf(stderr,"** daemon still not running\n");
}
D("adb_connect: return fd %d", fd);
return fd;
}
int adb_connect(const std::string& service, std::string* error) {
// first query the adb server's version
int fd = _adb_connect("host:version", error);
D("adb_connect: service %s", service.c_str());
if (fd == -2 && !is_local_socket_spec(__adb_server_socket_spec)) {
fprintf(stderr, "* cannot start server on remote host\n");
// error is the original network connection error
return fd;
} else if (fd == -2) {
fprintf(stderr, "* daemon not running; starting now at %s\n", __adb_server_socket_spec);
start_server:
if (launch_server(__adb_server_socket_spec)) {
fprintf(stderr, "* failed to start daemon\n");
// launch_server() has already printed detailed error info, so just
// return a generic error string about the overall adb_connect()
// that the caller requested.
*error = "cannot connect to daemon";
return -1;
} else {
fprintf(stderr, "* daemon started successfully\n");
}
// The server will wait until it detects all of its connected devices before acking.
// Fall through to _adb_connect.
} else {
// If a server is already running, check its version matches.
int version = ADB_SERVER_VERSION - 1;
// If we have a file descriptor, then parse version result.
if (fd >= 0) {
std::string version_string;
if (!ReadProtocolString(fd, &version_string, error)) {
adb_close(fd);
return -1;
}
ReadOrderlyShutdown(fd);
adb_close(fd);
if (sscanf(&version_string[0], "%04x", &version) != 1) {
*error = android::base::StringPrintf("cannot parse version string: %s",
version_string.c_str());
return -1;
}
} else {
// If fd is -1 check for "unknown host service" which would
// indicate a version of adb that does not support the
// version command, in which case we should fall-through to kill it.
if (*error != "unknown host service") {
return fd;
}
}
if (version != ADB_SERVER_VERSION) {
fprintf(stderr, "adb server version (%d) doesn't match this client (%d); killing...\n",
version, ADB_SERVER_VERSION);
adb_kill_server();
goto start_server;
}
}
// if the command is start-server, we are done.
if (service == "host:start-server") {
return 0;
}
fd = _adb_connect(service, error);
if (fd == -1) {
D("_adb_connect error: %s", error->c_str());
} else if(fd == -2) {
fprintf(stderr, "* daemon still not running\n");
}
D("adb_connect: return fd %d", fd);
return fd;
}