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The Android Open Source Project9ca14dc2009-03-03 19:32:55 -08001/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdlib.h>
18#include <stdio.h>
19#include <unistd.h>
20#include <string.h>
21#include <errno.h>
22
23#include "sysdeps.h"
24
JP Abgrall2e5dd6e2011-03-16 15:57:42 -070025#define TRACE_TAG TRACE_SERVICES
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -080026#include "adb.h"
27#include "file_sync_service.h"
28
29#if ADB_HOST
30# ifndef HAVE_WINSOCK
31# include <netinet/in.h>
32# include <netdb.h>
JP Abgrall2e5dd6e2011-03-16 15:57:42 -070033# include <sys/ioctl.h>
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -080034# endif
Mike Lockwoodfa311c32009-07-30 16:23:56 -070035#else
Ken Sumrall78438c92011-03-07 23:29:42 -080036# include <cutils/android_reboot.h>
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -080037#endif
38
39typedef struct stinfo stinfo;
40
41struct stinfo {
42 void (*func)(int fd, void *cookie);
43 int fd;
44 void *cookie;
45};
46
47
48void *service_bootstrap_func(void *x)
49{
50 stinfo *sti = x;
51 sti->func(sti->fd, sti->cookie);
52 free(sti);
53 return 0;
54}
55
56#if ADB_HOST
57ADB_MUTEX_DEFINE( dns_lock );
58
59static void dns_service(int fd, void *cookie)
60{
61 char *hostname = cookie;
62 struct hostent *hp;
63 unsigned zero = 0;
64
65 adb_mutex_lock(&dns_lock);
66 hp = gethostbyname(hostname);
Mike Lockwood1a855ae2009-09-19 16:52:58 -040067 free(cookie);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -080068 if(hp == 0) {
69 writex(fd, &zero, 4);
70 } else {
71 writex(fd, hp->h_addr, 4);
72 }
73 adb_mutex_unlock(&dns_lock);
74 adb_close(fd);
75}
76#else
77extern int recovery_mode;
78
79static void recover_service(int s, void *cookie)
80{
81 unsigned char buf[4096];
82 unsigned count = (unsigned) cookie;
83 int fd;
84
85 fd = adb_creat("/tmp/update", 0644);
86 if(fd < 0) {
87 adb_close(s);
88 return;
89 }
90
91 while(count > 0) {
92 unsigned xfer = (count > 4096) ? 4096 : count;
93 if(readx(s, buf, xfer)) break;
94 if(writex(fd, buf, xfer)) break;
95 count -= xfer;
96 }
97
98 if(count == 0) {
99 writex(s, "OKAY", 4);
100 } else {
101 writex(s, "FAIL", 4);
102 }
103 adb_close(fd);
104 adb_close(s);
105
106 fd = adb_creat("/tmp/update.begin", 0644);
107 adb_close(fd);
108}
109
The Android Open Source Project9c753402009-03-13 13:04:37 -0700110void restart_root_service(int fd, void *cookie)
111{
112 char buf[100];
113 char value[PROPERTY_VALUE_MAX];
114
115 if (getuid() == 0) {
116 snprintf(buf, sizeof(buf), "adbd is already running as root\n");
117 writex(fd, buf, strlen(buf));
118 adb_close(fd);
119 } else {
120 property_get("ro.debuggable", value, "");
121 if (strcmp(value, "1") != 0) {
122 snprintf(buf, sizeof(buf), "adbd cannot run as root in production builds\n");
123 writex(fd, buf, strlen(buf));
Mike Lockwood26b88e32009-08-24 15:58:40 -0700124 adb_close(fd);
The Android Open Source Project9c753402009-03-13 13:04:37 -0700125 return;
126 }
127
Benoit Gobyad926c12012-03-16 14:44:17 -0700128 property_set("service.adb.root", "1");
The Android Open Source Project9c753402009-03-13 13:04:37 -0700129 snprintf(buf, sizeof(buf), "restarting adbd as root\n");
130 writex(fd, buf, strlen(buf));
131 adb_close(fd);
The Android Open Source Project9c753402009-03-13 13:04:37 -0700132 }
133}
134
Mike Lockwood26b88e32009-08-24 15:58:40 -0700135void restart_tcp_service(int fd, void *cookie)
136{
137 char buf[100];
138 char value[PROPERTY_VALUE_MAX];
139 int port = (int)cookie;
140
141 if (port <= 0) {
142 snprintf(buf, sizeof(buf), "invalid port\n");
143 writex(fd, buf, strlen(buf));
144 adb_close(fd);
145 return;
146 }
147
148 snprintf(value, sizeof(value), "%d", port);
149 property_set("service.adb.tcp.port", value);
150 snprintf(buf, sizeof(buf), "restarting in TCP mode port: %d\n", port);
151 writex(fd, buf, strlen(buf));
152 adb_close(fd);
Mike Lockwood26b88e32009-08-24 15:58:40 -0700153}
154
155void restart_usb_service(int fd, void *cookie)
156{
157 char buf[100];
158
159 property_set("service.adb.tcp.port", "0");
160 snprintf(buf, sizeof(buf), "restarting in USB mode\n");
161 writex(fd, buf, strlen(buf));
162 adb_close(fd);
Mike Lockwood26b88e32009-08-24 15:58:40 -0700163}
164
165void reboot_service(int fd, void *arg)
Mike Lockwood12a35ea2009-08-04 20:37:51 -0400166{
167 char buf[100];
Nick Kralevichb7df0172013-04-18 12:20:02 -0700168 char property_val[PROPERTY_VALUE_MAX];
Mike Lockwoodd49e9eb2010-02-24 16:07:23 -0500169 int pid, ret;
Mike Lockwood12a35ea2009-08-04 20:37:51 -0400170
171 sync();
Mike Lockwoodd49e9eb2010-02-24 16:07:23 -0500172
173 /* Attempt to unmount the SD card first.
174 * No need to bother checking for errors.
175 */
176 pid = fork();
177 if (pid == 0) {
178 /* ask vdc to unmount it */
179 execl("/system/bin/vdc", "/system/bin/vdc", "volume", "unmount",
180 getenv("EXTERNAL_STORAGE"), "force", NULL);
181 } else if (pid > 0) {
182 /* wait until vdc succeeds or fails */
183 waitpid(pid, &ret, 0);
184 }
185
Nick Kralevichb7df0172013-04-18 12:20:02 -0700186 ret = snprintf(property_val, sizeof(property_val), "reboot,%s", (char *) arg);
187 if (ret >= (int) sizeof(property_val)) {
188 snprintf(buf, sizeof(buf), "reboot string too long. length=%d\n", ret);
189 writex(fd, buf, strlen(buf));
190 goto cleanup;
191 }
192
193 ret = property_set(ANDROID_RB_PROPERTY, property_val);
Mike Lockwood12a35ea2009-08-04 20:37:51 -0400194 if (ret < 0) {
Nick Kralevichb7df0172013-04-18 12:20:02 -0700195 snprintf(buf, sizeof(buf), "reboot failed: %d\n", ret);
Mike Lockwood12a35ea2009-08-04 20:37:51 -0400196 writex(fd, buf, strlen(buf));
197 }
Nick Kralevichb7df0172013-04-18 12:20:02 -0700198cleanup:
Mike Lockwood1a855ae2009-09-19 16:52:58 -0400199 free(arg);
Mike Lockwood12a35ea2009-08-04 20:37:51 -0400200 adb_close(fd);
201}
202
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800203#endif
204
205#if 0
206static void echo_service(int fd, void *cookie)
207{
208 char buf[4096];
209 int r;
210 char *p;
211 int c;
212
213 for(;;) {
Kenny Rooteac025c2012-10-12 15:26:45 -0700214 r = adb_read(fd, buf, 4096);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800215 if(r == 0) goto done;
216 if(r < 0) {
217 if(errno == EINTR) continue;
218 else goto done;
219 }
220
221 c = r;
222 p = buf;
223 while(c > 0) {
224 r = write(fd, p, c);
225 if(r > 0) {
226 c -= r;
227 p += r;
228 continue;
229 }
230 if((r < 0) && (errno == EINTR)) continue;
231 goto done;
232 }
233 }
234done:
235 close(fd);
236}
237#endif
238
239static int create_service_thread(void (*func)(int, void *), void *cookie)
240{
241 stinfo *sti;
242 adb_thread_t t;
243 int s[2];
244
245 if(adb_socketpair(s)) {
246 printf("cannot create service socket pair\n");
247 return -1;
248 }
249
250 sti = malloc(sizeof(stinfo));
251 if(sti == 0) fatal("cannot allocate stinfo");
252 sti->func = func;
253 sti->cookie = cookie;
254 sti->fd = s[1];
255
256 if(adb_thread_create( &t, service_bootstrap_func, sti)){
257 free(sti);
258 adb_close(s[0]);
259 adb_close(s[1]);
260 printf("cannot create service thread\n");
261 return -1;
262 }
263
264 D("service thread started, %d:%d\n",s[0], s[1]);
265 return s[0];
266}
267
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700268#if !ADB_HOST
269static int create_subprocess(const char *cmd, const char *arg0, const char *arg1, pid_t *pid)
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800270{
Joe Onorato590bca72009-09-03 16:30:43 -0700271#ifdef HAVE_WIN32_PROC
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700272 D("create_subprocess(cmd=%s, arg0=%s, arg1=%s)\n", cmd, arg0, arg1);
273 fprintf(stderr, "error: create_subprocess not implemented on Win32 (%s %s %s)\n", cmd, arg0, arg1);
274 return -1;
Joe Onorato590bca72009-09-03 16:30:43 -0700275#else /* !HAVE_WIN32_PROC */
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800276 char *devname;
277 int ptm;
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800278
279 ptm = unix_open("/dev/ptmx", O_RDWR); // | O_NOCTTY);
280 if(ptm < 0){
281 printf("[ cannot open /dev/ptmx - %s ]\n",strerror(errno));
282 return -1;
283 }
284 fcntl(ptm, F_SETFD, FD_CLOEXEC);
285
286 if(grantpt(ptm) || unlockpt(ptm) ||
287 ((devname = (char*) ptsname(ptm)) == 0)){
288 printf("[ trouble with /dev/ptmx - %s ]\n", strerror(errno));
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700289 adb_close(ptm);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800290 return -1;
291 }
292
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700293 *pid = fork();
294 if(*pid < 0) {
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800295 printf("- fork failed: %s -\n", strerror(errno));
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700296 adb_close(ptm);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800297 return -1;
298 }
299
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700300 if(*pid == 0){
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800301 int pts;
302
303 setsid();
304
305 pts = unix_open(devname, O_RDWR);
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700306 if(pts < 0) {
307 fprintf(stderr, "child failed to open pseudo-term slave: %s\n", devname);
308 exit(-1);
309 }
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800310
311 dup2(pts, 0);
312 dup2(pts, 1);
313 dup2(pts, 2);
314
Benoit Gobyf4ded742011-02-01 18:57:41 -0800315 adb_close(pts);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800316 adb_close(ptm);
317
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700318 // set OOM adjustment to zero
Mike Lockwood34106592009-05-20 09:14:30 -0400319 char text[64];
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700320 snprintf(text, sizeof text, "/proc/%d/oom_adj", getpid());
Mike Lockwood34106592009-05-20 09:14:30 -0400321 int fd = adb_open(text, O_WRONLY);
322 if (fd >= 0) {
323 adb_write(fd, "0", 1);
324 adb_close(fd);
325 } else {
326 D("adb: unable to open %s\n", text);
327 }
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700328 execl(cmd, cmd, arg0, arg1, NULL);
329 fprintf(stderr, "- exec '%s' failed: %s (%d) -\n",
330 cmd, strerror(errno), errno);
331 exit(-1);
332 } else {
333 // Don't set child's OOM adjustment to zero.
334 // Let the child do it itself, as sometimes the parent starts
335 // running before the child has a /proc/pid/oom_adj.
336 // """adb: unable to open /proc/644/oom_adj""" seen in some logs.
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800337 return ptm;
338 }
Joe Onorato590bca72009-09-03 16:30:43 -0700339#endif /* !HAVE_WIN32_PROC */
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800340}
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700341#endif /* !ABD_HOST */
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800342
343#if ADB_HOST
344#define SHELL_COMMAND "/bin/sh"
345#else
346#define SHELL_COMMAND "/system/bin/sh"
347#endif
348
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700349#if !ADB_HOST
350static void subproc_waiter_service(int fd, void *cookie)
351{
352 pid_t pid = (pid_t)cookie;
353
354 D("entered. fd=%d of pid=%d\n", fd, pid);
355 for (;;) {
356 int status;
357 pid_t p = waitpid(pid, &status, 0);
358 if (p == pid) {
359 D("fd=%d, post waitpid(pid=%d) status=%04x\n", fd, p, status);
360 if (WIFSIGNALED(status)) {
361 D("*** Killed by signal %d\n", WTERMSIG(status));
362 break;
363 } else if (!WIFEXITED(status)) {
364 D("*** Didn't exit!!. status %d\n", status);
365 break;
366 } else if (WEXITSTATUS(status) >= 0) {
367 D("*** Exit code %d\n", WEXITSTATUS(status));
368 break;
369 }
370 }
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700371 }
372 D("shell exited fd=%d of pid=%d err=%d\n", fd, pid, errno);
373 if (SHELL_EXIT_NOTIFY_FD >=0) {
374 int res;
375 res = writex(SHELL_EXIT_NOTIFY_FD, &fd, sizeof(fd));
376 D("notified shell exit via fd=%d for pid=%d res=%d errno=%d\n",
377 SHELL_EXIT_NOTIFY_FD, pid, res, errno);
378 }
379}
380
381static int create_subproc_thread(const char *name)
382{
383 stinfo *sti;
384 adb_thread_t t;
385 int ret_fd;
386 pid_t pid;
387 if(name) {
388 ret_fd = create_subprocess(SHELL_COMMAND, "-c", name, &pid);
389 } else {
390 ret_fd = create_subprocess(SHELL_COMMAND, "-", 0, &pid);
391 }
392 D("create_subprocess() ret_fd=%d pid=%d\n", ret_fd, pid);
393
394 sti = malloc(sizeof(stinfo));
395 if(sti == 0) fatal("cannot allocate stinfo");
396 sti->func = subproc_waiter_service;
397 sti->cookie = (void*)pid;
398 sti->fd = ret_fd;
399
400 if(adb_thread_create( &t, service_bootstrap_func, sti)){
401 free(sti);
402 adb_close(ret_fd);
403 printf("cannot create service thread\n");
404 return -1;
405 }
406
407 D("service thread started, fd=%d pid=%d\n",ret_fd, pid);
408 return ret_fd;
409}
410#endif
411
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800412int service_to_fd(const char *name)
413{
414 int ret = -1;
415
416 if(!strncmp(name, "tcp:", 4)) {
417 int port = atoi(name + 4);
418 name = strchr(name + 4, ':');
419 if(name == 0) {
420 ret = socket_loopback_client(port, SOCK_STREAM);
421 if (ret >= 0)
422 disable_tcp_nagle(ret);
423 } else {
424#if ADB_HOST
425 adb_mutex_lock(&dns_lock);
426 ret = socket_network_client(name + 1, port, SOCK_STREAM);
427 adb_mutex_unlock(&dns_lock);
428#else
429 return -1;
430#endif
431 }
432#ifndef HAVE_WINSOCK /* winsock doesn't implement unix domain sockets */
433 } else if(!strncmp(name, "local:", 6)) {
434 ret = socket_local_client(name + 6,
435 ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
436 } else if(!strncmp(name, "localreserved:", 14)) {
437 ret = socket_local_client(name + 14,
438 ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM);
439 } else if(!strncmp(name, "localabstract:", 14)) {
440 ret = socket_local_client(name + 14,
441 ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
442 } else if(!strncmp(name, "localfilesystem:", 16)) {
443 ret = socket_local_client(name + 16,
444 ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM);
445#endif
446#if ADB_HOST
447 } else if(!strncmp("dns:", name, 4)){
448 char *n = strdup(name + 4);
449 if(n == 0) return -1;
450 ret = create_service_thread(dns_service, n);
451#else /* !ADB_HOST */
452 } else if(!strncmp("dev:", name, 4)) {
453 ret = unix_open(name + 4, O_RDWR);
454 } else if(!strncmp(name, "framebuffer:", 12)) {
455 ret = create_service_thread(framebuffer_service, 0);
456 } else if(recovery_mode && !strncmp(name, "recover:", 8)) {
457 ret = create_service_thread(recover_service, (void*) atoi(name + 8));
458 } else if (!strncmp(name, "jdwp:", 5)) {
459 ret = create_jdwp_connection_fd(atoi(name+5));
460 } else if (!strncmp(name, "log:", 4)) {
461 ret = create_service_thread(log_service, get_log_file_path(name + 4));
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800462 } else if(!HOST && !strncmp(name, "shell:", 6)) {
463 if(name[6]) {
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700464 ret = create_subproc_thread(name + 6);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800465 } else {
JP Abgrall2e5dd6e2011-03-16 15:57:42 -0700466 ret = create_subproc_thread(0);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800467 }
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800468 } else if(!strncmp(name, "sync:", 5)) {
469 ret = create_service_thread(file_sync_service, NULL);
470 } else if(!strncmp(name, "remount:", 8)) {
471 ret = create_service_thread(remount_service, NULL);
Mike Lockwood12a35ea2009-08-04 20:37:51 -0400472 } else if(!strncmp(name, "reboot:", 7)) {
Mike Lockwood1a855ae2009-09-19 16:52:58 -0400473 void* arg = strdup(name + 7);
474 if(arg == 0) return -1;
475 ret = create_service_thread(reboot_service, arg);
The Android Open Source Project9c753402009-03-13 13:04:37 -0700476 } else if(!strncmp(name, "root:", 5)) {
477 ret = create_service_thread(restart_root_service, NULL);
Christopher Tate73779122011-04-21 12:53:28 -0700478 } else if(!strncmp(name, "backup:", 7)) {
479 char* arg = strdup(name+7);
480 if (arg == NULL) return -1;
Christopher Tatecf5379b2011-05-17 15:52:54 -0700481 ret = backup_service(BACKUP, arg);
482 } else if(!strncmp(name, "restore:", 8)) {
483 ret = backup_service(RESTORE, NULL);
Mike Lockwood26b88e32009-08-24 15:58:40 -0700484 } else if(!strncmp(name, "tcpip:", 6)) {
485 int port;
486 if (sscanf(name + 6, "%d", &port) == 0) {
487 port = 0;
488 }
489 ret = create_service_thread(restart_tcp_service, (void *)port);
490 } else if(!strncmp(name, "usb:", 4)) {
491 ret = create_service_thread(restart_usb_service, NULL);
The Android Open Source Project9ca14dc2009-03-03 19:32:55 -0800492#endif
493#if 0
494 } else if(!strncmp(name, "echo:", 5)){
495 ret = create_service_thread(echo_service, 0);
496#endif
497 }
498 if (ret >= 0) {
499 close_on_exec(ret);
500 }
501 return ret;
502}
503
504#if ADB_HOST
505struct state_info {
506 transport_type transport;
507 char* serial;
508 int state;
509};
510
511static void wait_for_state(int fd, void* cookie)
512{
513 struct state_info* sinfo = cookie;
514 char* err = "unknown error";
515
516 D("wait_for_state %d\n", sinfo->state);
517
518 atransport *t = acquire_one_transport(sinfo->state, sinfo->transport, sinfo->serial, &err);
519 if(t != 0) {
520 writex(fd, "OKAY", 4);
521 } else {
522 sendfailmsg(fd, err);
523 }
524
525 if (sinfo->serial)
526 free(sinfo->serial);
527 free(sinfo);
528 adb_close(fd);
529 D("wait_for_state is done\n");
530}
531#endif
532
533#if ADB_HOST
534asocket* host_service_to_socket(const char* name, const char *serial)
535{
536 if (!strcmp(name,"track-devices")) {
537 return create_device_tracker();
538 } else if (!strncmp(name, "wait-for-", strlen("wait-for-"))) {
539 struct state_info* sinfo = malloc(sizeof(struct state_info));
540
541 if (serial)
542 sinfo->serial = strdup(serial);
543 else
544 sinfo->serial = NULL;
545
546 name += strlen("wait-for-");
547
548 if (!strncmp(name, "local", strlen("local"))) {
549 sinfo->transport = kTransportLocal;
550 sinfo->state = CS_DEVICE;
551 } else if (!strncmp(name, "usb", strlen("usb"))) {
552 sinfo->transport = kTransportUsb;
553 sinfo->state = CS_DEVICE;
554 } else if (!strncmp(name, "any", strlen("any"))) {
555 sinfo->transport = kTransportAny;
556 sinfo->state = CS_DEVICE;
557 } else {
558 free(sinfo);
559 return NULL;
560 }
561
562 int fd = create_service_thread(wait_for_state, sinfo);
563 return create_local_socket(fd);
564 }
565 return NULL;
566}
567#endif /* ADB_HOST */