/*
* 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 <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include <errno.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include "sysdeps.h"
#include "adb.h"
#if !ADB_HOST
#include <private/android_filesystem_config.h>
#include <linux/capability.h>
#include <linux/prctl.h>
#else
#include "usb_vendors.h"
#endif
#if ADB_TRACE
ADB_MUTEX_DEFINE( D_lock );
#endif
int HOST = 0;
static const char *adb_device_banner = "device";
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);
}
int adb_trace_mask;
/* read a comma/space/colum/semi-column separated list of tags
* from the ADB_TRACE environment variable and build the trace
* mask from it. note that '1' and 'all' are special cases to
* enable all tracing
*/
void adb_trace_init(void)
{
const char* p = getenv("ADB_TRACE");
const char* q;
static const struct {
const char* tag;
int flag;
} tags[] = {
{ "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 },
{ NULL, 0 }
};
if (p == NULL)
return;
/* use a comma/column/semi-colum/space separated list */
while (*p) {
int len, tagn;
q = strpbrk(p, " ,:;");
if (q == NULL) {
q = p + strlen(p);
}
len = q - p;
for (tagn = 0; tags[tagn].tag != NULL; tagn++)
{
int taglen = strlen(tags[tagn].tag);
if (len == taglen && !memcmp(tags[tagn].tag, p, len) )
{
int flag = tags[tagn].flag;
if (flag == 0) {
adb_trace_mask = ~0;
return;
}
adb_trace_mask |= (1 << flag);
break;
}
}
p = q;
if (*p)
p++;
}
}
#if !ADB_HOST
/*
* Implements ADB tracing inside the emulator.
*/
#include <stdarg.h>
/*
* Redefine open and write for qemu_pipe.h that contains inlined references
* to those routines. We will redifine them back after qemu_pipe.h inclusion.
*/
#undef open
#undef write
#define open adb_open
#define write adb_write
#include <hardware/qemu_pipe.h>
#undef open
#undef write
#define open ___xxx_open
#define write ___xxx_write
/* A handle to adb-debug qemud service in the emulator. */
int adb_debug_qemu = -1;
/* Initializes connection with the adb-debug qemud service in the emulator. */
static int adb_qemu_trace_init(void)
{
char con_name[32];
if (adb_debug_qemu >= 0) {
return 0;
}
/* adb debugging QEMUD service connection request. */
snprintf(con_name, sizeof(con_name), "qemud:adb-debug");
adb_debug_qemu = qemu_pipe_open(con_name);
return (adb_debug_qemu >= 0) ? 0 : -1;
}
void adb_qemu_trace(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
char msg[1024];
if (adb_debug_qemu >= 0) {
vsnprintf(msg, sizeof(msg), fmt, args);
adb_write(adb_debug_qemu, msg, strlen(msg));
}
}
#endif /* !ADB_HOST */
apacket *get_apacket(void)
{
apacket *p = malloc(sizeof(apacket));
if(p == 0) 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(void)
{
D("adb: online\n");
}
void handle_offline(atransport *t)
{
D("adb: offline\n");
//Close the associated usb
run_transport_disconnects(t);
}
#if TRACE_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;
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++;
}
fprintf(stderr, tag);
}
#endif
static void send_ready(unsigned local, unsigned remote, atransport *t)
{
D("Calling send_ready \n");
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 \n");
apacket *p = get_apacket();
p->msg.command = A_CLSE;
p->msg.arg0 = local;
p->msg.arg1 = remote;
send_packet(p, t);
}
static void send_connect(atransport *t)
{
D("Calling send_connect \n");
apacket *cp = get_apacket();
cp->msg.command = A_CNXN;
cp->msg.arg0 = A_VERSION;
cp->msg.arg1 = MAX_PAYLOAD;
snprintf((char*) cp->data, sizeof cp->data, "%s::",
HOST ? "host" : adb_device_banner);
cp->msg.data_length = strlen((char*) cp->data) + 1;
send_packet(cp, t);
#if ADB_HOST
/* XXX why sleep here? */
// allow the device some time to respond to the connect message
adb_sleep_ms(1000);
#endif
}
static char *connection_state_name(atransport *t)
{
if (t == NULL) {
return "unknown";
}
switch(t->connection_state) {
case CS_BOOTLOADER:
return "bootloader";
case CS_DEVICE:
return "device";
case CS_OFFLINE:
return "offline";
default:
return "unknown";
}
}
void parse_banner(char *banner, atransport *t)
{
char *type, *product, *end;
D("parse_banner: %s\n", banner);
type = banner;
product = strchr(type, ':');
if(product) {
*product++ = 0;
} else {
product = "";
}
/* remove trailing ':' */
end = strchr(product, ':');
if(end) *end = 0;
/* save product name in device structure */
if (t->product == NULL) {
t->product = strdup(product);
} else if (strcmp(product, t->product) != 0) {
free(t->product);
t->product = strdup(product);
}
if(!strcmp(type, "bootloader")){
D("setting connection_state to CS_BOOTLOADER\n");
t->connection_state = CS_BOOTLOADER;
update_transports();
return;
}
if(!strcmp(type, "device")) {
D("setting connection_state to CS_DEVICE\n");
t->connection_state = CS_DEVICE;
update_transports();
return;
}
if(!strcmp(type, "recovery")) {
D("setting connection_state to CS_RECOVERY\n");
t->connection_state = CS_RECOVERY;
update_transports();
return;
}
if(!strcmp(type, "sideload")) {
D("setting connection_state to CS_SIDELOAD\n");
t->connection_state = CS_SIDELOAD;
update_transports();
return;
}
t->connection_state = CS_HOST;
}
void handle_packet(apacket *p, atransport *t)
{
asocket *s;
D("handle_packet() %c%c%c%c\n", ((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(HOST) send_connect(t);
} else {
t->connection_state = CS_OFFLINE;
handle_offline(t);
send_packet(p, t);
}
return;
case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */
/* XXX verify version, etc */
if(t->connection_state != CS_OFFLINE) {
t->connection_state = CS_OFFLINE;
handle_offline(t);
}
parse_banner((char*) p->data, t);
handle_online();
if(!HOST) send_connect(t);
break;
case A_OPEN: /* OPEN(local-id, 0, "destination") */
if(t->connection_state != CS_OFFLINE) {
char *name = (char*) p->data;
name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0;
s = create_local_service_socket(name);
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->connection_state != CS_OFFLINE) {
if((s = find_local_socket(p->msg.arg1))) {
if(s->peer == 0) {
s->peer = create_remote_socket(p->msg.arg0, t);
s->peer->peer = s;
}
s->ready(s);
}
}
break;
case A_CLSE: /* CLOSE(local-id, remote-id, "") */
if(t->connection_state != CS_OFFLINE) {
if((s = find_local_socket(p->msg.arg1))) {
s->close(s);
}
}
break;
case A_WRTE:
if(t->connection_state != CS_OFFLINE) {
if((s = find_local_socket(p->msg.arg1))) {
unsigned rid = p->msg.arg0;
p->len = p->msg.data_length;
if(s->enqueue(s, p) == 0) {
D("Enqueue the socket\n");
send_ready(s->id, rid, t);
}
return;
}
}
break;
default:
printf("handle_packet: what is %08x?!\n", p->msg.command);
}
put_apacket(p);
}
alistener listener_list = {
.next = &listener_list,
.prev = &listener_list,
};
static void ss_listener_event_func(int _fd, unsigned ev, void *_l)
{
asocket *s;
if(ev & FDE_READ) {
struct sockaddr addr;
socklen_t alen;
int fd;
alen = sizeof(addr);
fd = adb_socket_accept(_fd, &addr, &alen);
if(fd < 0) return;
adb_socket_setbufsize(fd, CHUNK_SIZE);
s = create_local_socket(fd);
if(s) {
connect_to_smartsocket(s);
return;
}
adb_close(fd);
}
}
static void listener_event_func(int _fd, unsigned ev, void *_l)
{
alistener *l = _l;
asocket *s;
if(ev & FDE_READ) {
struct sockaddr addr;
socklen_t alen;
int fd;
alen = sizeof(addr);
fd = adb_socket_accept(_fd, &addr, &alen);
if(fd < 0) return;
s = create_local_socket(fd);
if(s) {
s->transport = l->transport;
connect_to_remote(s, l->connect_to);
return;
}
adb_close(fd);
}
}
static void free_listener(alistener* l)
{
if (l->next) {
l->next->prev = l->prev;
l->prev->next = l->next;
l->next = l->prev = l;
}
// closes the corresponding fd
fdevent_remove(&l->fde);
if (l->local_name)
free((char*)l->local_name);
if (l->connect_to)
free((char*)l->connect_to);
if (l->transport) {
remove_transport_disconnect(l->transport, &l->disconnect);
}
free(l);
}
static void listener_disconnect(void* _l, atransport* t)
{
alistener* l = _l;
free_listener(l);
}
int local_name_to_fd(const char *name)
{
int port;
if(!strncmp("tcp:", name, 4)){
int ret;
port = atoi(name + 4);
ret = socket_loopback_server(port, SOCK_STREAM);
return ret;
}
#ifndef HAVE_WIN32_IPC /* no Unix-domain sockets on Win32 */
// It's non-sensical to support the "reserved" space on the adb host side
if(!strncmp(name, "local:", 6)) {
return socket_local_server(name + 6,
ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
} else if(!strncmp(name, "localabstract:", 14)) {
return socket_local_server(name + 14,
ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
} else if(!strncmp(name, "localfilesystem:", 16)) {
return socket_local_server(name + 16,
ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM);
}
#endif
printf("unknown local portname '%s'\n", name);
return -1;
}
static int remove_listener(const char *local_name, const char *connect_to, atransport* transport)
{
alistener *l;
for (l = listener_list.next; l != &listener_list; l = l->next) {
if (!strcmp(local_name, l->local_name) &&
!strcmp(connect_to, l->connect_to) &&
l->transport && l->transport == transport) {
listener_disconnect(l, transport);
return 0;
}
}
return -1;
}
static int install_listener(const char *local_name, const char *connect_to, atransport* transport)
{
alistener *l;
//printf("install_listener('%s','%s')\n", local_name, connect_to);
for(l = listener_list.next; l != &listener_list; l = l->next){
if(strcmp(local_name, l->local_name) == 0) {
char *cto;
/* can't repurpose a smartsocket */
if(l->connect_to[0] == '*') {
return -1;
}
cto = strdup(connect_to);
if(cto == 0) {
return -1;
}
//printf("rebinding '%s' to '%s'\n", local_name, connect_to);
free((void*) l->connect_to);
l->connect_to = cto;
if (l->transport != transport) {
remove_transport_disconnect(l->transport, &l->disconnect);
l->transport = transport;
add_transport_disconnect(l->transport, &l->disconnect);
}
return 0;
}
}
if((l = calloc(1, sizeof(alistener))) == 0) goto nomem;
if((l->local_name = strdup(local_name)) == 0) goto nomem;
if((l->connect_to = strdup(connect_to)) == 0) goto nomem;
l->fd = local_name_to_fd(local_name);
if(l->fd < 0) {
free((void*) l->local_name);
free((void*) l->connect_to);
free(l);
printf("cannot bind '%s'\n", local_name);
return -2;
}
close_on_exec(l->fd);
if(!strcmp(l->connect_to, "*smartsocket*")) {
fdevent_install(&l->fde, l->fd, ss_listener_event_func, l);
} else {
fdevent_install(&l->fde, l->fd, listener_event_func, l);
}
fdevent_set(&l->fde, FDE_READ);
l->next = &listener_list;
l->prev = listener_list.prev;
l->next->prev = l;
l->prev->next = l;
l->transport = transport;
if (transport) {
l->disconnect.opaque = l;
l->disconnect.func = listener_disconnect;
add_transport_disconnect(transport, &l->disconnect);
}
return 0;
nomem:
fatal("cannot allocate listener");
return 0;
}
#ifdef HAVE_WIN32_PROC
static BOOL WINAPI ctrlc_handler(DWORD type)
{
exit(STATUS_CONTROL_C_EXIT);
return TRUE;
}
#endif
static void adb_cleanup(void)
{
usb_cleanup();
}
void start_logging(void)
{
#ifdef HAVE_WIN32_PROC
char temp[ MAX_PATH ];
FILE* fnul;
FILE* flog;
GetTempPath( sizeof(temp) - 8, temp );
strcat( temp, "adb.log" );
/* Win32 specific redirections */
fnul = fopen( "NUL", "rt" );
if (fnul != NULL)
stdin[0] = fnul[0];
flog = fopen( temp, "at" );
if (flog == NULL)
flog = fnul;
setvbuf( flog, NULL, _IONBF, 0 );
stdout[0] = flog[0];
stderr[0] = flog[0];
fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
#else
int fd;
fd = unix_open("/dev/null", O_RDONLY);
dup2(fd, 0);
adb_close(fd);
fd = unix_open("/tmp/adb.log", O_WRONLY | O_CREAT | O_APPEND, 0640);
if(fd < 0) {
fd = unix_open("/dev/null", O_WRONLY);
}
dup2(fd, 1);
dup2(fd, 2);
adb_close(fd);
fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
#endif
}
#if !ADB_HOST
void start_device_log(void)
{
int fd;
char path[PATH_MAX];
struct tm now;
time_t t;
char value[PROPERTY_VALUE_MAX];
// read the trace mask from persistent property persist.adb.trace_mask
// give up if the property is not set or cannot be parsed
property_get("persist.adb.trace_mask", value, "");
if (sscanf(value, "%x", &adb_trace_mask) != 1)
return;
adb_mkdir("/data/adb", 0775);
tzset();
time(&t);
localtime_r(&t, &now);
strftime(path, sizeof(path),
"/data/adb/adb-%Y-%m-%d-%H-%M-%S.txt",
&now);
fd = unix_open(path, O_WRONLY | O_CREAT | O_TRUNC, 0640);
if (fd < 0)
return;
// redirect stdout and stderr to the log file
dup2(fd, 1);
dup2(fd, 2);
fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
adb_close(fd);
fd = unix_open("/dev/null", O_RDONLY);
dup2(fd, 0);
adb_close(fd);
}
#endif
#if ADB_HOST
int launch_server(int server_port)
{
#ifdef HAVE_WIN32_PROC
/* 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 */
HANDLE pipe_read, pipe_write;
SECURITY_ATTRIBUTES sa;
STARTUPINFO startup;
PROCESS_INFORMATION pinfo;
char program_path[ MAX_PATH ];
int ret;
sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = NULL;
sa.bInheritHandle = TRUE;
/* create pipe, and ensure its read handle isn't inheritable */
ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 );
if (!ret) {
fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() );
return -1;
}
SetHandleInformation( pipe_read, HANDLE_FLAG_INHERIT, 0 );
ZeroMemory( &startup, sizeof(startup) );
startup.cb = sizeof(startup);
startup.hStdInput = GetStdHandle( STD_INPUT_HANDLE );
startup.hStdOutput = pipe_write;
startup.hStdError = GetStdHandle( STD_ERROR_HANDLE );
startup.dwFlags = STARTF_USESTDHANDLES;
ZeroMemory( &pinfo, sizeof(pinfo) );
/* get path of current program */
GetModuleFileName( NULL, program_path, sizeof(program_path) );
ret = CreateProcess(
program_path, /* program path */
"adb fork-server server",
/* 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 );
CloseHandle( pipe_write );
if (!ret) {
fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() );
CloseHandle( pipe_read );
return -1;
}
CloseHandle( pinfo.hProcess );
CloseHandle( pinfo.hThread );
/* wait for the "OK\n" message */
{
char temp[3];
DWORD count;
ret = ReadFile( pipe_read, temp, 3, &count, NULL );
CloseHandle( pipe_read );
if ( !ret ) {
fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() );
return -1;
}
if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') {
fprintf(stderr, "ADB server didn't ACK\n" );
return -1;
}
}
#elif defined(HAVE_FORKEXEC)
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 fd[1] will get mapped to stderr in the child.
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
// redirect stderr to the pipe
// we use stderr instead of stdout due to stdout's buffering behavior.
adb_close(fd[0]);
dup2(fd[1], STDERR_FILENO);
adb_close(fd[1]);
// child process
int result = execl(path, "adb", "fork-server", "server", 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();
}
#else
#error "cannot implement background server start on this platform"
#endif
return 0;
}
#endif
/* Constructs a local name of form tcp:port.
* target_str points to the target string, it's content will be overwritten.
* target_size is the capacity of the target string.
* server_port is the port number to use for the local name.
*/
void build_local_name(char* target_str, size_t target_size, int server_port)
{
snprintf(target_str, target_size, "tcp:%d", server_port);
}
#if !ADB_HOST
static int should_drop_privileges() {
#ifndef ALLOW_ADBD_ROOT
return 1;
#else /* ALLOW_ADBD_ROOT */
int secure = 0;
char value[PROPERTY_VALUE_MAX];
/* run adbd in secure mode if ro.secure is set and
** we are not in the emulator
*/
property_get("ro.kernel.qemu", value, "");
if (strcmp(value, "1") != 0) {
property_get("ro.secure", value, "1");
if (strcmp(value, "1") == 0) {
// don't run as root if ro.secure is set...
secure = 1;
// ... except we allow running as root in userdebug builds if the
// service.adb.root property has been set by the "adb root" command
property_get("ro.debuggable", value, "");
if (strcmp(value, "1") == 0) {
property_get("service.adb.root", value, "");
if (strcmp(value, "1") == 0) {
secure = 0;
}
}
}
}
return secure;
#endif /* ALLOW_ADBD_ROOT */
}
#endif /* !ADB_HOST */
int adb_main(int is_daemon, int server_port)
{
#if !ADB_HOST
int port;
char value[PROPERTY_VALUE_MAX];
umask(000);
#endif
atexit(adb_cleanup);
#ifdef HAVE_WIN32_PROC
SetConsoleCtrlHandler( ctrlc_handler, TRUE );
#elif defined(HAVE_FORKEXEC)
// No SIGCHLD. Let the service subproc handle its children.
signal(SIGPIPE, SIG_IGN);
#endif
init_transport_registration();
#if ADB_HOST
HOST = 1;
usb_vendors_init();
usb_init();
local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
char local_name[30];
build_local_name(local_name, sizeof(local_name), server_port);
if(install_listener(local_name, "*smartsocket*", NULL)) {
exit(1);
}
#else
/* don't listen on a port (default 5037) if running in secure mode */
/* don't run as root if we are running in secure mode */
if (should_drop_privileges()) {
struct __user_cap_header_struct header;
struct __user_cap_data_struct cap;
if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) != 0) {
exit(1);
}
/* add extra groups:
** AID_ADB to access the USB driver
** AID_LOG to read system logs (adb logcat)
** AID_INPUT to diagnose input issues (getevent)
** AID_INET to diagnose network issues (netcfg, ping)
** AID_GRAPHICS to access the frame buffer
** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump)
** AID_SDCARD_R to allow reading from the SD card
** AID_SDCARD_RW to allow writing to the SD card
** AID_MOUNT to allow unmounting the SD card before rebooting
** AID_NET_BW_STATS to read out qtaguid statistics
*/
gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS,
AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_R, AID_SDCARD_RW,
AID_MOUNT, AID_NET_BW_STATS };
if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) {
exit(1);
}
/* then switch user and group to "shell" */
if (setgid(AID_SHELL) != 0) {
exit(1);
}
if (setuid(AID_SHELL) != 0) {
exit(1);
}
/* set CAP_SYS_BOOT capability, so "adb reboot" will succeed */
header.version = _LINUX_CAPABILITY_VERSION;
header.pid = 0;
cap.effective = cap.permitted = (1 << CAP_SYS_BOOT);
cap.inheritable = 0;
capset(&header, &cap);
D("Local port disabled\n");
} else {
char local_name[30];
build_local_name(local_name, sizeof(local_name), server_port);
if(install_listener(local_name, "*smartsocket*", NULL)) {
exit(1);
}
}
/* for the device, start the usb transport if the
** android usb device exists and the "service.adb.tcp.port" and
** "persist.adb.tcp.port" properties are not set.
** Otherwise start the network transport.
*/
property_get("service.adb.tcp.port", value, "");
if (!value[0])
property_get("persist.adb.tcp.port", value, "");
if (sscanf(value, "%d", &port) == 1 && port > 0) {
// listen on TCP port specified by service.adb.tcp.port property
local_init(port);
} else if (access("/dev/android_adb", F_OK) == 0) {
// listen on USB
usb_init();
} else {
// listen on default port
local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
}
D("adb_main(): pre init_jdwp()\n");
init_jdwp();
D("adb_main(): post init_jdwp()\n");
#endif
if (is_daemon)
{
// inform our parent that we are up and running.
#ifdef HAVE_WIN32_PROC
DWORD count;
WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL );
#elif defined(HAVE_FORKEXEC)
fprintf(stderr, "OK\n");
#endif
start_logging();
}
D("Event loop starting\n");
fdevent_loop();
usb_cleanup();
return 0;
}
#if ADB_HOST
void connect_device(char* host, char* buffer, int buffer_size)
{
int port, fd;
char* portstr = strchr(host, ':');
char hostbuf[100];
char serial[100];
strncpy(hostbuf, host, sizeof(hostbuf) - 1);
if (portstr) {
if (portstr - host >= sizeof(hostbuf)) {
snprintf(buffer, buffer_size, "bad host name %s", host);
return;
}
// zero terminate the host at the point we found the colon
hostbuf[portstr - host] = 0;
if (sscanf(portstr + 1, "%d", &port) == 0) {
snprintf(buffer, buffer_size, "bad port number %s", portstr);
return;
}
} else {
port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
}
snprintf(serial, sizeof(serial), "%s:%d", hostbuf, port);
if (find_transport(serial)) {
snprintf(buffer, buffer_size, "already connected to %s", serial);
return;
}
fd = socket_network_client(hostbuf, port, SOCK_STREAM);
if (fd < 0) {
snprintf(buffer, buffer_size, "unable to connect to %s:%d", host, port);
return;
}
D("client: connected on remote on fd %d\n", fd);
close_on_exec(fd);
disable_tcp_nagle(fd);
register_socket_transport(fd, serial, port, 0);
snprintf(buffer, buffer_size, "connected to %s", serial);
}
void connect_emulator(char* port_spec, char* buffer, int buffer_size)
{
char* port_separator = strchr(port_spec, ',');
if (!port_separator) {
snprintf(buffer, buffer_size,
"unable to parse '%s' as <console port>,<adb port>",
port_spec);
return;
}
// Zero-terminate console port and make port_separator point to 2nd port.
*port_separator++ = 0;
int console_port = strtol(port_spec, NULL, 0);
int adb_port = strtol(port_separator, NULL, 0);
if (!(console_port > 0 && adb_port > 0)) {
*(port_separator - 1) = ',';
snprintf(buffer, buffer_size,
"Invalid port numbers: Expected positive numbers, got '%s'",
port_spec);
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 != NULL) {
snprintf(buffer, buffer_size,
"Emulator on port %d already registered.", adb_port);
return;
}
/* Check if more emulators can be registered. Similar unproblematic
* race condition as above. */
int candidate_slot = get_available_local_transport_index();
if (candidate_slot < 0) {
snprintf(buffer, buffer_size, "Cannot accept more emulators.");
return;
}
/* Preconditions met, try to connect to the emulator. */
if (!local_connect_arbitrary_ports(console_port, adb_port)) {
snprintf(buffer, buffer_size,
"Connected to emulator on ports %d,%d", console_port, adb_port);
} else {
snprintf(buffer, buffer_size,
"Could not connect to emulator on ports %d,%d",
console_port, adb_port);
}
}
#endif
int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s)
{
atransport *transport = NULL;
char buf[4096];
if(!strcmp(service, "kill")) {
fprintf(stderr,"adb server killed by remote request\n");
fflush(stdout);
adb_write(reply_fd, "OKAY", 4);
usb_cleanup();
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"))) {
char* error_string = "unknown failure";
transport_type 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;
}
transport = acquire_one_transport(CS_ANY, type, serial, &error_string);
if (transport) {
s->transport = transport;
adb_write(reply_fd, "OKAY", 4);
} else {
sendfailmsg(reply_fd, error_string);
}
return 1;
}
// return a list of all connected devices
if (!strcmp(service, "devices")) {
char buffer[4096];
memset(buf, 0, sizeof(buf));
memset(buffer, 0, sizeof(buffer));
D("Getting device list \n");
list_transports(buffer, sizeof(buffer));
snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer);
D("Wrote device list \n");
writex(reply_fd, buf, strlen(buf));
return 0;
}
// add a new TCP transport, device or emulator
if (!strncmp(service, "connect:", 8)) {
char buffer[4096];
char* host = service + 8;
if (!strncmp(host, "emu:", 4)) {
connect_emulator(host + 4, buffer, sizeof(buffer));
} else {
connect_device(host, buffer, sizeof(buffer));
}
// Send response for emulator and device
snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer);
writex(reply_fd, buf, strlen(buf));
return 0;
}
// remove TCP transport
if (!strncmp(service, "disconnect:", 11)) {
char buffer[4096];
memset(buffer, 0, sizeof(buffer));
char* serial = service + 11;
if (serial[0] == 0) {
// disconnect from all TCP devices
unregister_all_tcp_transports();
} else {
char hostbuf[100];
// assume port 5555 if no port is specified
if (!strchr(serial, ':')) {
snprintf(hostbuf, sizeof(hostbuf) - 1, "%s:5555", serial);
serial = hostbuf;
}
atransport *t = find_transport(serial);
if (t) {
unregister_transport(t);
} else {
snprintf(buffer, sizeof(buffer), "No such device %s", serial);
}
}
snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer);
writex(reply_fd, buf, strlen(buf));
return 0;
}
// returns our value for ADB_SERVER_VERSION
if (!strcmp(service, "version")) {
char version[12];
snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION);
snprintf(buf, sizeof buf, "OKAY%04x%s", (unsigned)strlen(version), version);
writex(reply_fd, buf, strlen(buf));
return 0;
}
if(!strncmp(service,"get-serialno",strlen("get-serialno"))) {
char *out = "unknown";
transport = acquire_one_transport(CS_ANY, ttype, serial, NULL);
if (transport && transport->serial) {
out = transport->serial;
}
snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(out),out);
writex(reply_fd, buf, strlen(buf));
return 0;
}
// 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
if(!strncmp(service,"forward:",8) || !strncmp(service,"killforward:",12)) {
char *local, *remote, *err;
int r;
atransport *transport;
int createForward = strncmp(service,"kill",4);
local = service + (createForward ? 8 : 12);
remote = strchr(local,';');
if(remote == 0) {
sendfailmsg(reply_fd, "malformed forward spec");
return 0;
}
*remote++ = 0;
if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')){
sendfailmsg(reply_fd, "malformed forward spec");
return 0;
}
transport = acquire_one_transport(CS_ANY, ttype, serial, &err);
if (!transport) {
sendfailmsg(reply_fd, err);
return 0;
}
if (createForward) {
r = install_listener(local, remote, transport);
} else {
r = remove_listener(local, remote, transport);
}
if(r == 0) {
/* 1st OKAY is connect, 2nd OKAY is status */
writex(reply_fd, "OKAYOKAY", 8);
return 0;
}
if (createForward) {
sendfailmsg(reply_fd, (r == -1) ? "cannot rebind smartsocket" : "cannot bind socket");
} else {
sendfailmsg(reply_fd, "cannot remove listener");
}
return 0;
}
if(!strncmp(service,"get-state",strlen("get-state"))) {
transport = acquire_one_transport(CS_ANY, ttype, serial, NULL);
char *state = connection_state_name(transport);
snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(state),state);
writex(reply_fd, buf, strlen(buf));
return 0;
}
return -1;
}
#if !ADB_HOST
int recovery_mode = 0;
#endif
int main(int argc, char **argv)
{
#if ADB_HOST
adb_sysdeps_init();
adb_trace_init();
D("Handling commandline()\n");
return adb_commandline(argc - 1, argv + 1);
#else
/* If adbd runs inside the emulator this will enable adb tracing via
* adb-debug qemud service in the emulator. */
adb_qemu_trace_init();
if((argc > 1) && (!strcmp(argv[1],"recovery"))) {
adb_device_banner = "recovery";
recovery_mode = 1;
}
start_device_log();
D("Handling main()\n");
return adb_main(0, DEFAULT_ADB_PORT);
#endif
}