static void
send_error_packet(int to_peer, int err, const char* msg)
{
size_t msg_size = strlen(msg);
if (msg_size > UINT16_MAX)
msg_size = UINT16_MAX;
struct xfer_msg m = {
.type = XFER_MSG_ERROR,
.u.error.err = err,
.u.error.msg_size = msg_size,
};
send_xfer_msg(to_peer, &m);
write_all(to_peer, msg, msg_size);
}
int
xfer_stub_main(const struct cmd_xfer_stub_info* info)
{
struct xfer_ctx ctx = {
.from_peer = STDIN_FILENO,
.to_peer = STDOUT_FILENO,
.info = info,
};
struct errinfo ei = {
.want_msg = true
};
if (catch_error(do_xfer, &ctx, &ei)) {
send_error_packet(ctx.to_peer, ei.err, ei.msg);
return 1;
}
return 0;
}
#if FBADB_MAIN
int
xfer_handle_command(
const struct start_peer_info* spi,
const struct cmd_xfer_stub_info* local,
const struct cmd_xfer_stub_info* remote)
{
struct child* peer = start_peer(
spi,
make_args_cmd_xfer_stub(
CMD_ARG_NAME | CMD_ARG_FORWARDED,
remote));
struct xfer_ctx ctx = {
.from_peer = peer->fd[1]->fd,
.to_peer = peer->fd[0]->fd,
.info = local,
};
do_xfer(&ctx);
return child_status_to_exit_code(child_wait(peer));
}
/*
* While inside interactive mode, launch the external command cmd on the given
* file.
*/
void
wins_launch_external (char *file, char *cmd)
{
char *arg[] = { cmd, file, NULL };
int pid;
wins_prepare_external ();
if ((pid = fork_exec (NULL, NULL, cmd, arg)))
child_wait (NULL, NULL, pid);
wins_unprepare_external ();
}
static
void
main_loop(void)
{
struct pollfd pollv[1];
int i;
int e = 0;
char *c;
pollv[0].fd = my_sigpipe[0];
pollv[0].events = POLLIN;
for(;;){
if(flag_term){
break;
}
/* start/restart children: */
/* deux[0] is logger, check it first: */
for(i = 0; i < 2; ++i){
if(deux[i].pid == 0){
child_exec(i);
}
}
/* poll on sigpipe: */
sigset_unblock(&my_sigset);
do{
e = poll(pollv, 1, -1);
}while((e == -1) && (errno == EINTR));
sigset_block(&my_sigset);
/* consume sigpipe: */
while(read(my_sigpipe[0], &c, 1) == 1){/*empty*/ ;}
/* consume dead children: */
child_wait();
}
/* here on SIGTERM: */
if(deux[1].pid){
/* harvest deux[1]: */
waitpid(deux[1].pid, NULL, 0);
}
if(deux[0].pid){
/* logger should exit on eof: */
close(my_logpipe[1]);
do_kill(deux[0].pid, SIGCONT);
waitpid(deux[0].pid, NULL, 0);
}
return;
}
static void
compile_dex_with_dexopt(const char* dex_file_name,
const char* odex_file_name)
{
SCOPED_RESLIST(rl);
int dex_file = xopen(dex_file_name, O_RDONLY, 0);
const char* odex_temp_filename = xaprintf(
"%s.tmp.%s",
odex_file_name,
gen_hex_random(ENOUGH_ENTROPY));
cleanup_commit(cleanup_allocate(), cleanup_tmpfile, odex_temp_filename);
int odex_temp_file = xopen(odex_temp_filename,
O_RDWR | O_CREAT | O_EXCL,
0644);
allow_inherit(dex_file);
allow_inherit(odex_temp_file);
struct child_start_info csi = {
.io[0] = CHILD_IO_DEV_NULL,
.io[1] = CHILD_IO_PIPE,
.io[2] = CHILD_IO_DUP_TO_STDOUT,
.exename = "dexopt",
.argv = ARGV(
"dexopt",
"--zip",
xaprintf("%d", dex_file),
xaprintf("%d", odex_temp_file),
dex_file_name,
"v=ao=fm=y"),
};
struct child* dexopt = child_start(&csi);
struct growable_buffer output = slurp_fd_buf(dexopt->fd[1]->fd);
int status = child_status_to_exit_code(child_wait(dexopt));
if (status != 0)
die(EINVAL,
"dexopt failed: %s",
massage_output_buf(output));
xrename(odex_temp_filename, odex_file_name);
}
static void
compile_dex(const char* dex_file_name,
const char* odex_file_name)
{
if (api_level() < 21)
compile_dex_with_dexopt(dex_file_name, odex_file_name);
}
int
rdex_main(const struct cmd_rdex_info* info)
{
const char* dex_file_name = info->dexfile;
struct stat dex_stat = xstat(dex_file_name);
const char* odex_file_name = make_odex_name(dex_file_name);
bool need_recompile = true;
struct stat odex_stat;
if (stat(odex_file_name, &odex_stat) == 0 &&
dex_stat.st_mtime <= odex_stat.st_mtime)
{
need_recompile = false;
}
(void) need_recompile;
(void) odex_file_name;
(void) compile_dex;
if (need_recompile)
compile_dex(dex_file_name, odex_file_name);
if (setenv("CLASSPATH", dex_file_name, 1) == -1)
die_errno("setenv");
if (info->classname[0] == '-')
die(EINVAL, "class name cannot begin with '-'");
execvp("app_process",
(char* const*)
ARGV_CONCAT(
ARGV("app_process",
xdirname(dex_file_name),
info->classname),
info->args ?: empty_argv));
die_errno("execvp(\"app_process\", ...");
}
static struct child*
start_child(struct msg_shex_hello* shex_hello)
{
if (shex_hello->nr_argv < 2)
die(ECOMM, "insufficient arguments given");
SCOPED_RESLIST(rl_args);
char** child_args = read_child_arglist(shex_hello->nr_argv);
reslist_pop_nodestroy(rl_args);
struct child_start_info csi = {
.flags = CHILD_SETSID,
.exename = child_args[0],
.argv = (const char* const *) child_args + 1,
.pty_setup = setup_pty,
.pty_setup_data = shex_hello,
.deathsig = -SIGHUP,
};
if (shex_hello->si[0].pty_p)
csi.flags |= CHILD_PTY_STDIN;
if (shex_hello->si[1].pty_p)
csi.flags |= CHILD_PTY_STDOUT;
if (shex_hello->si[2].pty_p)
csi.flags |= CHILD_PTY_STDERR;
return child_start(&csi);
}
static void __attribute__((noreturn))
re_exec_as_root()
{
execlp("su", "su", "-c", xaprintf("%s stub", orig_argv0), NULL);
die_errno("execlp of su");
}
int
stub_main(int argc, const char** argv)
{
if (argc != 1)
die(EINVAL, "this command is internal");
/* XMKRAW_SKIP_CLEANUP so we never change from raw back to cooked
* mode on exit. The connection dies on exit anyway, and
* resetting the pty can send some extra bytes that can confuse
* our peer. */
if (isatty(0))
xmkraw(0, XMKRAW_SKIP_CLEANUP);
if (isatty(1))
xmkraw(1, XMKRAW_SKIP_CLEANUP);
printf(FB_ADB_PROTO_START_LINE "\n", build_time, (int) getuid());
fflush(stdout);
struct msg_shex_hello* shex_hello;
struct msg* mhdr = read_msg(0, read_all_adb_encoded);
if (mhdr->type == MSG_EXEC_AS_ROOT)
re_exec_as_root(); // Never returns
if (mhdr->type != MSG_SHEX_HELLO ||
mhdr->size < sizeof (struct msg_shex_hello))
{
die(ECOMM, "bad hello");
}
shex_hello = (struct msg_shex_hello*) mhdr;
struct child* child = start_child(shex_hello);
struct stub stub;
memset(&stub, 0, sizeof (stub));
stub.child = child;
struct fb_adb_sh* sh = &stub.sh;
sh->process_msg = stub_process_msg;
sh->max_outgoing_msg = shex_hello->maxmsg;
sh->nrch = 5;
struct channel** ch = xalloc(sh->nrch * sizeof (*ch));
ch[FROM_PEER] = channel_new(fdh_dup(0),
shex_hello->stub_recv_bufsz,
CHANNEL_FROM_FD);
ch[FROM_PEER]->window = UINT32_MAX;
ch[FROM_PEER]->adb_encoding_hack = true;
replace_with_dev_null(0);
ch[TO_PEER] = channel_new(fdh_dup(1),
shex_hello->stub_send_bufsz,
CHANNEL_TO_FD);
replace_with_dev_null(1);
ch[CHILD_STDIN] = channel_new(child->fd[0],
shex_hello->si[0].bufsz,
CHANNEL_TO_FD);
ch[CHILD_STDIN]->track_bytes_written = true;
ch[CHILD_STDIN]->bytes_written =
ringbuf_room(ch[CHILD_STDIN]->rb);
ch[CHILD_STDOUT] = channel_new(child->fd[1],
shex_hello->si[1].bufsz,
CHANNEL_FROM_FD);
ch[CHILD_STDOUT]->track_window = true;
ch[CHILD_STDERR] = channel_new(child->fd[2],
shex_hello->si[2].bufsz,
CHANNEL_FROM_FD);
ch[CHILD_STDERR]->track_window = true;
sh->ch = ch;
io_loop_init(sh);
PUMP_WHILE(sh, (!channel_dead_p(ch[FROM_PEER]) &&
!channel_dead_p(ch[TO_PEER]) &&
(!channel_dead_p(ch[CHILD_STDOUT]) ||
!channel_dead_p(ch[CHILD_STDERR]))));
if (channel_dead_p(ch[FROM_PEER]) || channel_dead_p(ch[TO_PEER])) {
//
// If we lost our peer connection, make sure the child sees
// SIGHUP instead of seeing its stdin close: just drain any
// internally-buffered IO and exit. When we lose the pty, the
// child gets SIGHUP.
//
// Make sure we won't be getting any more commands.
channel_close(ch[FROM_PEER]);
channel_close(ch[TO_PEER]);
PUMP_WHILE(sh, (!channel_dead_p(ch[FROM_PEER]) ||
!channel_dead_p(ch[TO_PEER])));
// Drain output buffers
channel_close(ch[CHILD_STDIN]);
PUMP_WHILE(sh, !channel_dead_p(ch[CHILD_STDIN]));
return 128 + SIGHUP;
}
//
// Clean exit: close standard handles and drain IO. Peer still
// has no idea that we're exiting. Get exit status, send that to
// peer, then cleanly shut down the peer connection.
//
dbg("clean exit");
channel_close(ch[CHILD_STDIN]);
channel_close(ch[CHILD_STDOUT]);
channel_close(ch[CHILD_STDERR]);
PUMP_WHILE (sh, (!channel_dead_p(ch[CHILD_STDIN]) ||
!channel_dead_p(ch[CHILD_STDOUT]) ||
!channel_dead_p(ch[CHILD_STDERR])));
send_exit_message(child_wait(child), sh);
channel_close(ch[TO_PEER]);
PUMP_WHILE(sh, !channel_dead_p(ch[TO_PEER]));
channel_close(ch[FROM_PEER]);
PUMP_WHILE(sh, !channel_dead_p(ch[FROM_PEER]));
return 0;
}
struct child_start_info csi = {
.flags = CHILD_MERGE_STDERR,
.exename = "adb",
.argv = argv_concat((const char*[]){"adb", NULL},
adb_args ?: empty_argv,
(const char*[]){"push", local, remote, NULL},
NULL),
};
struct child* adb = child_start(&csi);
fdh_destroy(adb->fd[0]);
char buf[512];
size_t len = read_all(adb->fd[1]->fd, buf, sizeof (buf));
fdh_destroy(adb->fd[1]);
int status = child_wait(adb);
if (!(WIFEXITED(status) && WEXITSTATUS(status) == 0)) {
if (len == sizeof (buf))
--len;
while (len > 0 && isspace(buf[len - 1]))
--len;
buf[len] = '\0';
char* epos = buf;
while (*epos != '\0' && isspace(*epos))
++epos;
if (strncmp(epos, "error: ", strlen("error: ")) == 0) {
epos += strlen("error: ");