adb.c revision 447f061da19fe46bae35f1cdd93eeb16bc225463 
1/*
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#define  TRACE_TAG   TRACE_ADB
18
19#include <stdio.h>
20#include <stdlib.h>
21#include <ctype.h>
22#include <stdarg.h>
23#include <errno.h>
24#include <string.h>
25#include <time.h>
26#include <sys/time.h>
27
28#include "sysdeps.h"
29#include "adb.h"
30
31#if !ADB_HOST
32#include <private/android_filesystem_config.h>
33#include <linux/capability.h>
34#include <linux/prctl.h>
35#else
36#include "usb_vendors.h"
37#endif
38
39#if ADB_TRACE
40ADB_MUTEX_DEFINE( D_lock );
41#endif
42
43int HOST = 0;
44
45static const char *adb_device_banner = "device";
46
47void fatal(const char *fmt, ...)
48{
49    va_list ap;
50    va_start(ap, fmt);
51    fprintf(stderr, "error: ");
52    vfprintf(stderr, fmt, ap);
53    fprintf(stderr, "\n");
54    va_end(ap);
55    exit(-1);
56}
57
58void fatal_errno(const char *fmt, ...)
59{
60    va_list ap;
61    va_start(ap, fmt);
62    fprintf(stderr, "error: %s: ", strerror(errno));
63    vfprintf(stderr, fmt, ap);
64    fprintf(stderr, "\n");
65    va_end(ap);
66    exit(-1);
67}
68
69int   adb_trace_mask;
70
71/* read a comma/space/colum/semi-column separated list of tags
72 * from the ADB_TRACE environment variable and build the trace
73 * mask from it. note that '1' and 'all' are special cases to
74 * enable all tracing
75 */
76void  adb_trace_init(void)
77{
78    const char*  p = getenv("ADB_TRACE");
79    const char*  q;
80
81    static const struct {
82        const char*  tag;
83        int           flag;
84    } tags[] = {
85        { "1", 0 },
86        { "all", 0 },
87        { "adb", TRACE_ADB },
88        { "sockets", TRACE_SOCKETS },
89        { "packets", TRACE_PACKETS },
90        { "rwx", TRACE_RWX },
91        { "usb", TRACE_USB },
92        { "sync", TRACE_SYNC },
93        { "sysdeps", TRACE_SYSDEPS },
94        { "transport", TRACE_TRANSPORT },
95        { "jdwp", TRACE_JDWP },
96        { "services", TRACE_SERVICES },
97        { NULL, 0 }
98    };
99
100    if (p == NULL)
101            return;
102
103    /* use a comma/column/semi-colum/space separated list */
104    while (*p) {
105        int  len, tagn;
106
107        q = strpbrk(p, " ,:;");
108        if (q == NULL) {
109            q = p + strlen(p);
110        }
111        len = q - p;
112
113        for (tagn = 0; tags[tagn].tag != NULL; tagn++)
114        {
115            int  taglen = strlen(tags[tagn].tag);
116
117            if (len == taglen && !memcmp(tags[tagn].tag, p, len) )
118            {
119                int  flag = tags[tagn].flag;
120                if (flag == 0) {
121                    adb_trace_mask = ~0;
122                    return;
123                }
124                adb_trace_mask |= (1 << flag);
125                break;
126            }
127        }
128        p = q;
129        if (*p)
130            p++;
131    }
132}
133
134
135apacket *get_apacket(void)
136{
137    apacket *p = malloc(sizeof(apacket));
138    if(p == 0) fatal("failed to allocate an apacket");
139    memset(p, 0, sizeof(apacket) - MAX_PAYLOAD);
140    return p;
141}
142
143void put_apacket(apacket *p)
144{
145    free(p);
146}
147
148void handle_online(void)
149{
150    D("adb: online\n");
151}
152
153void handle_offline(atransport *t)
154{
155    D("adb: offline\n");
156    //Close the associated usb
157    run_transport_disconnects(t);
158}
159
160#if TRACE_PACKETS
161#define DUMPMAX 32
162void print_packet(const char *label, apacket *p)
163{
164    char *tag;
165    char *x;
166    unsigned count;
167
168    switch(p->msg.command){
169    case A_SYNC: tag = "SYNC"; break;
170    case A_CNXN: tag = "CNXN" ; break;
171    case A_OPEN: tag = "OPEN"; break;
172    case A_OKAY: tag = "OKAY"; break;
173    case A_CLSE: tag = "CLSE"; break;
174    case A_WRTE: tag = "WRTE"; break;
175    default: tag = "????"; break;
176    }
177
178    fprintf(stderr, "%s: %s %08x %08x %04x \"",
179            label, tag, p->msg.arg0, p->msg.arg1, p->msg.data_length);
180    count = p->msg.data_length;
181    x = (char*) p->data;
182    if(count > DUMPMAX) {
183        count = DUMPMAX;
184        tag = "\n";
185    } else {
186        tag = "\"\n";
187    }
188    while(count-- > 0){
189        if((*x >= ' ') && (*x < 127)) {
190            fputc(*x, stderr);
191        } else {
192            fputc('.', stderr);
193        }
194        x++;
195    }
196    fprintf(stderr, tag);
197}
198#endif
199
200static void send_ready(unsigned local, unsigned remote, atransport *t)
201{
202    D("Calling send_ready \n");
203    apacket *p = get_apacket();
204    p->msg.command = A_OKAY;
205    p->msg.arg0 = local;
206    p->msg.arg1 = remote;
207    send_packet(p, t);
208}
209
210static void send_close(unsigned local, unsigned remote, atransport *t)
211{
212    D("Calling send_close \n");
213    apacket *p = get_apacket();
214    p->msg.command = A_CLSE;
215    p->msg.arg0 = local;
216    p->msg.arg1 = remote;
217    send_packet(p, t);
218}
219
220static void send_connect(atransport *t)
221{
222    D("Calling send_connect \n");
223    apacket *cp = get_apacket();
224    cp->msg.command = A_CNXN;
225    cp->msg.arg0 = A_VERSION;
226    cp->msg.arg1 = MAX_PAYLOAD;
227    snprintf((char*) cp->data, sizeof cp->data, "%s::",
228            HOST ? "host" : adb_device_banner);
229    cp->msg.data_length = strlen((char*) cp->data) + 1;
230    send_packet(cp, t);
231#if ADB_HOST
232        /* XXX why sleep here? */
233    // allow the device some time to respond to the connect message
234    adb_sleep_ms(1000);
235#endif
236}
237
238static char *connection_state_name(atransport *t)
239{
240    if (t == NULL) {
241        return "unknown";
242    }
243
244    switch(t->connection_state) {
245    case CS_BOOTLOADER:
246        return "bootloader";
247    case CS_DEVICE:
248        return "device";
249    case CS_OFFLINE:
250        return "offline";
251    default:
252        return "unknown";
253    }
254}
255
256void parse_banner(char *banner, atransport *t)
257{
258    char *type, *product, *end;
259
260    D("parse_banner: %s\n", banner);
261    type = banner;
262    product = strchr(type, ':');
263    if(product) {
264        *product++ = 0;
265    } else {
266        product = "";
267    }
268
269        /* remove trailing ':' */
270    end = strchr(product, ':');
271    if(end) *end = 0;
272
273        /* save product name in device structure */
274    if (t->product == NULL) {
275        t->product = strdup(product);
276    } else if (strcmp(product, t->product) != 0) {
277        free(t->product);
278        t->product = strdup(product);
279    }
280
281    if(!strcmp(type, "bootloader")){
282        D("setting connection_state to CS_BOOTLOADER\n");
283        t->connection_state = CS_BOOTLOADER;
284        update_transports();
285        return;
286    }
287
288    if(!strcmp(type, "device")) {
289        D("setting connection_state to CS_DEVICE\n");
290        t->connection_state = CS_DEVICE;
291        update_transports();
292        return;
293    }
294
295    if(!strcmp(type, "recovery")) {
296        D("setting connection_state to CS_RECOVERY\n");
297        t->connection_state = CS_RECOVERY;
298        update_transports();
299        return;
300    }
301
302    if(!strcmp(type, "sideload")) {
303        D("setting connection_state to CS_SIDELOAD\n");
304        t->connection_state = CS_SIDELOAD;
305        update_transports();
306        return;
307    }
308
309    t->connection_state = CS_HOST;
310}
311
312void handle_packet(apacket *p, atransport *t)
313{
314    asocket *s;
315
316    D("handle_packet() %c%c%c%c\n", ((char*) (&(p->msg.command)))[0],
317            ((char*) (&(p->msg.command)))[1],
318            ((char*) (&(p->msg.command)))[2],
319            ((char*) (&(p->msg.command)))[3]);
320    print_packet("recv", p);
321
322    switch(p->msg.command){
323    case A_SYNC:
324        if(p->msg.arg0){
325            send_packet(p, t);
326            if(HOST) send_connect(t);
327        } else {
328            t->connection_state = CS_OFFLINE;
329            handle_offline(t);
330            send_packet(p, t);
331        }
332        return;
333
334    case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */
335            /* XXX verify version, etc */
336        if(t->connection_state != CS_OFFLINE) {
337            t->connection_state = CS_OFFLINE;
338            handle_offline(t);
339        }
340        parse_banner((char*) p->data, t);
341        handle_online();
342        if(!HOST) send_connect(t);
343        break;
344
345    case A_OPEN: /* OPEN(local-id, 0, "destination") */
346        if(t->connection_state != CS_OFFLINE) {
347            char *name = (char*) p->data;
348            name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0;
349            s = create_local_service_socket(name);
350            if(s == 0) {
351                send_close(0, p->msg.arg0, t);
352            } else {
353                s->peer = create_remote_socket(p->msg.arg0, t);
354                s->peer->peer = s;
355                send_ready(s->id, s->peer->id, t);
356                s->ready(s);
357            }
358        }
359        break;
360
361    case A_OKAY: /* READY(local-id, remote-id, "") */
362        if(t->connection_state != CS_OFFLINE) {
363            if((s = find_local_socket(p->msg.arg1))) {
364                if(s->peer == 0) {
365                    s->peer = create_remote_socket(p->msg.arg0, t);
366                    s->peer->peer = s;
367                }
368                s->ready(s);
369            }
370        }
371        break;
372
373    case A_CLSE: /* CLOSE(local-id, remote-id, "") */
374        if(t->connection_state != CS_OFFLINE) {
375            if((s = find_local_socket(p->msg.arg1))) {
376                s->close(s);
377            }
378        }
379        break;
380
381    case A_WRTE:
382        if(t->connection_state != CS_OFFLINE) {
383            if((s = find_local_socket(p->msg.arg1))) {
384                unsigned rid = p->msg.arg0;
385                p->len = p->msg.data_length;
386
387                if(s->enqueue(s, p) == 0) {
388                    D("Enqueue the socket\n");
389                    send_ready(s->id, rid, t);
390                }
391                return;
392            }
393        }
394        break;
395
396    default:
397        printf("handle_packet: what is %08x?!\n", p->msg.command);
398    }
399
400    put_apacket(p);
401}
402
403alistener listener_list = {
404    .next = &listener_list,
405    .prev = &listener_list,
406};
407
408static void ss_listener_event_func(int _fd, unsigned ev, void *_l)
409{
410    asocket *s;
411
412    if(ev & FDE_READ) {
413        struct sockaddr addr;
414        socklen_t alen;
415        int fd;
416
417        alen = sizeof(addr);
418        fd = adb_socket_accept(_fd, &addr, &alen);
419        if(fd < 0) return;
420
421        adb_socket_setbufsize(fd, CHUNK_SIZE);
422
423        s = create_local_socket(fd);
424        if(s) {
425            connect_to_smartsocket(s);
426            return;
427        }
428
429        adb_close(fd);
430    }
431}
432
433static void listener_event_func(int _fd, unsigned ev, void *_l)
434{
435    alistener *l = _l;
436    asocket *s;
437
438    if(ev & FDE_READ) {
439        struct sockaddr addr;
440        socklen_t alen;
441        int fd;
442
443        alen = sizeof(addr);
444        fd = adb_socket_accept(_fd, &addr, &alen);
445        if(fd < 0) return;
446
447        s = create_local_socket(fd);
448        if(s) {
449            s->transport = l->transport;
450            connect_to_remote(s, l->connect_to);
451            return;
452        }
453
454        adb_close(fd);
455    }
456}
457
458static void  free_listener(alistener*  l)
459{
460    if (l->next) {
461        l->next->prev = l->prev;
462        l->prev->next = l->next;
463        l->next = l->prev = l;
464    }
465
466    // closes the corresponding fd
467    fdevent_remove(&l->fde);
468
469    if (l->local_name)
470        free((char*)l->local_name);
471
472    if (l->connect_to)
473        free((char*)l->connect_to);
474
475    if (l->transport) {
476        remove_transport_disconnect(l->transport, &l->disconnect);
477    }
478    free(l);
479}
480
481static void listener_disconnect(void*  _l, atransport*  t)
482{
483    alistener*  l = _l;
484
485    free_listener(l);
486}
487
488int local_name_to_fd(const char *name)
489{
490    int port;
491
492    if(!strncmp("tcp:", name, 4)){
493        int  ret;
494        port = atoi(name + 4);
495        ret = socket_loopback_server(port, SOCK_STREAM);
496        return ret;
497    }
498#ifndef HAVE_WIN32_IPC  /* no Unix-domain sockets on Win32 */
499    // It's non-sensical to support the "reserved" space on the adb host side
500    if(!strncmp(name, "local:", 6)) {
501        return socket_local_server(name + 6,
502                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
503    } else if(!strncmp(name, "localabstract:", 14)) {
504        return socket_local_server(name + 14,
505                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
506    } else if(!strncmp(name, "localfilesystem:", 16)) {
507        return socket_local_server(name + 16,
508                ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM);
509    }
510
511#endif
512    printf("unknown local portname '%s'\n", name);
513    return -1;
514}
515
516static int remove_listener(const char *local_name, const char *connect_to, atransport* transport)
517{
518    alistener *l;
519
520    for (l = listener_list.next; l != &listener_list; l = l->next) {
521        if (!strcmp(local_name, l->local_name) &&
522            !strcmp(connect_to, l->connect_to) &&
523            l->transport && l->transport == transport) {
524
525            listener_disconnect(l, transport);
526            return 0;
527        }
528    }
529
530    return -1;
531}
532
533static int install_listener(const char *local_name, const char *connect_to, atransport* transport)
534{
535    alistener *l;
536
537    //printf("install_listener('%s','%s')\n", local_name, connect_to);
538
539    for(l = listener_list.next; l != &listener_list; l = l->next){
540        if(strcmp(local_name, l->local_name) == 0) {
541            char *cto;
542
543                /* can't repurpose a smartsocket */
544            if(l->connect_to[0] == '*') {
545                return -1;
546            }
547
548            cto = strdup(connect_to);
549            if(cto == 0) {
550                return -1;
551            }
552
553            //printf("rebinding '%s' to '%s'\n", local_name, connect_to);
554            free((void*) l->connect_to);
555            l->connect_to = cto;
556            if (l->transport != transport) {
557                remove_transport_disconnect(l->transport, &l->disconnect);
558                l->transport = transport;
559                add_transport_disconnect(l->transport, &l->disconnect);
560            }
561            return 0;
562        }
563    }
564
565    if((l = calloc(1, sizeof(alistener))) == 0) goto nomem;
566    if((l->local_name = strdup(local_name)) == 0) goto nomem;
567    if((l->connect_to = strdup(connect_to)) == 0) goto nomem;
568
569
570    l->fd = local_name_to_fd(local_name);
571    if(l->fd < 0) {
572        free((void*) l->local_name);
573        free((void*) l->connect_to);
574        free(l);
575        printf("cannot bind '%s'\n", local_name);
576        return -2;
577    }
578
579    close_on_exec(l->fd);
580    if(!strcmp(l->connect_to, "*smartsocket*")) {
581        fdevent_install(&l->fde, l->fd, ss_listener_event_func, l);
582    } else {
583        fdevent_install(&l->fde, l->fd, listener_event_func, l);
584    }
585    fdevent_set(&l->fde, FDE_READ);
586
587    l->next = &listener_list;
588    l->prev = listener_list.prev;
589    l->next->prev = l;
590    l->prev->next = l;
591    l->transport = transport;
592
593    if (transport) {
594        l->disconnect.opaque = l;
595        l->disconnect.func   = listener_disconnect;
596        add_transport_disconnect(transport, &l->disconnect);
597    }
598    return 0;
599
600nomem:
601    fatal("cannot allocate listener");
602    return 0;
603}
604
605#ifdef HAVE_WIN32_PROC
606static BOOL WINAPI ctrlc_handler(DWORD type)
607{
608    exit(STATUS_CONTROL_C_EXIT);
609    return TRUE;
610}
611#endif
612
613static void adb_cleanup(void)
614{
615    usb_cleanup();
616}
617
618void start_logging(void)
619{
620#ifdef HAVE_WIN32_PROC
621    char    temp[ MAX_PATH ];
622    FILE*   fnul;
623    FILE*   flog;
624
625    GetTempPath( sizeof(temp) - 8, temp );
626    strcat( temp, "adb.log" );
627
628    /* Win32 specific redirections */
629    fnul = fopen( "NUL", "rt" );
630    if (fnul != NULL)
631        stdin[0] = fnul[0];
632
633    flog = fopen( temp, "at" );
634    if (flog == NULL)
635        flog = fnul;
636
637    setvbuf( flog, NULL, _IONBF, 0 );
638
639    stdout[0] = flog[0];
640    stderr[0] = flog[0];
641    fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
642#else
643    int fd;
644
645    fd = unix_open("/dev/null", O_RDONLY);
646    dup2(fd, 0);
647    adb_close(fd);
648
649    fd = unix_open("/tmp/adb.log", O_WRONLY | O_CREAT | O_APPEND, 0640);
650    if(fd < 0) {
651        fd = unix_open("/dev/null", O_WRONLY);
652    }
653    dup2(fd, 1);
654    dup2(fd, 2);
655    adb_close(fd);
656    fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
657#endif
658}
659
660#if !ADB_HOST
661void start_device_log(void)
662{
663    int fd;
664    char    path[PATH_MAX];
665    struct tm now;
666    time_t t;
667    char value[PROPERTY_VALUE_MAX];
668
669    // read the trace mask from persistent property persist.adb.trace_mask
670    // give up if the property is not set or cannot be parsed
671    property_get("persist.adb.trace_mask", value, "");
672    if (sscanf(value, "%x", &adb_trace_mask) != 1)
673        return;
674
675    adb_mkdir("/data/adb", 0775);
676    tzset();
677    time(&t);
678    localtime_r(&t, &now);
679    strftime(path, sizeof(path),
680                "/data/adb/adb-%Y-%m-%d-%H-%M-%S.txt",
681                &now);
682    fd = unix_open(path, O_WRONLY | O_CREAT | O_TRUNC, 0640);
683    if (fd < 0)
684        return;
685
686    // redirect stdout and stderr to the log file
687    dup2(fd, 1);
688    dup2(fd, 2);
689    fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
690    adb_close(fd);
691
692    fd = unix_open("/dev/null", O_RDONLY);
693    dup2(fd, 0);
694    adb_close(fd);
695}
696#endif
697
698#if ADB_HOST
699int launch_server(int server_port)
700{
701#ifdef HAVE_WIN32_PROC
702    /* we need to start the server in the background                    */
703    /* we create a PIPE that will be used to wait for the server's "OK" */
704    /* message since the pipe handles must be inheritable, we use a     */
705    /* security attribute                                               */
706    HANDLE                pipe_read, pipe_write;
707    SECURITY_ATTRIBUTES   sa;
708    STARTUPINFO           startup;
709    PROCESS_INFORMATION   pinfo;
710    char                  program_path[ MAX_PATH ];
711    int                   ret;
712
713    sa.nLength = sizeof(sa);
714    sa.lpSecurityDescriptor = NULL;
715    sa.bInheritHandle = TRUE;
716
717    /* create pipe, and ensure its read handle isn't inheritable */
718    ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 );
719    if (!ret) {
720        fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() );
721        return -1;
722    }
723
724    SetHandleInformation( pipe_read, HANDLE_FLAG_INHERIT, 0 );
725
726    ZeroMemory( &startup, sizeof(startup) );
727    startup.cb = sizeof(startup);
728    startup.hStdInput  = GetStdHandle( STD_INPUT_HANDLE );
729    startup.hStdOutput = pipe_write;
730    startup.hStdError  = GetStdHandle( STD_ERROR_HANDLE );
731    startup.dwFlags    = STARTF_USESTDHANDLES;
732
733    ZeroMemory( &pinfo, sizeof(pinfo) );
734
735    /* get path of current program */
736    GetModuleFileName( NULL, program_path, sizeof(program_path) );
737
738    ret = CreateProcess(
739            program_path,                              /* program path  */
740            "adb fork-server server",
741                                    /* the fork-server argument will set the
742                                       debug = 2 in the child           */
743            NULL,                   /* process handle is not inheritable */
744            NULL,                    /* thread handle is not inheritable */
745            TRUE,                          /* yes, inherit some handles */
746            DETACHED_PROCESS, /* the new process doesn't have a console */
747            NULL,                     /* use parent's environment block */
748            NULL,                    /* use parent's starting directory */
749            &startup,                 /* startup info, i.e. std handles */
750            &pinfo );
751
752    CloseHandle( pipe_write );
753
754    if (!ret) {
755        fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() );
756        CloseHandle( pipe_read );
757        return -1;
758    }
759
760    CloseHandle( pinfo.hProcess );
761    CloseHandle( pinfo.hThread );
762
763    /* wait for the "OK\n" message */
764    {
765        char  temp[3];
766        DWORD  count;
767
768        ret = ReadFile( pipe_read, temp, 3, &count, NULL );
769        CloseHandle( pipe_read );
770        if ( !ret ) {
771            fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() );
772            return -1;
773        }
774        if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') {
775            fprintf(stderr, "ADB server didn't ACK\n" );
776            return -1;
777        }
778    }
779#elif defined(HAVE_FORKEXEC)
780    char    path[PATH_MAX];
781    int     fd[2];
782
783    // set up a pipe so the child can tell us when it is ready.
784    // fd[0] will be parent's end, and fd[1] will get mapped to stderr in the child.
785    if (pipe(fd)) {
786        fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno);
787        return -1;
788    }
789    get_my_path(path, PATH_MAX);
790    pid_t pid = fork();
791    if(pid < 0) return -1;
792
793    if (pid == 0) {
794        // child side of the fork
795
796        // redirect stderr to the pipe
797        // we use stderr instead of stdout due to stdout's buffering behavior.
798        adb_close(fd[0]);
799        dup2(fd[1], STDERR_FILENO);
800        adb_close(fd[1]);
801
802        // child process
803        int result = execl(path, "adb", "fork-server", "server", NULL);
804        // this should not return
805        fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno);
806    } else  {
807        // parent side of the fork
808
809        char  temp[3];
810
811        temp[0] = 'A'; temp[1] = 'B'; temp[2] = 'C';
812        // wait for the "OK\n" message
813        adb_close(fd[1]);
814        int ret = adb_read(fd[0], temp, 3);
815        int saved_errno = errno;
816        adb_close(fd[0]);
817        if (ret < 0) {
818            fprintf(stderr, "could not read ok from ADB Server, errno = %d\n", saved_errno);
819            return -1;
820        }
821        if (ret != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') {
822            fprintf(stderr, "ADB server didn't ACK\n" );
823            return -1;
824        }
825
826        setsid();
827    }
828#else
829#error "cannot implement background server start on this platform"
830#endif
831    return 0;
832}
833#endif
834
835/* Constructs a local name of form tcp:port.
836 * target_str points to the target string, it's content will be overwritten.
837 * target_size is the capacity of the target string.
838 * server_port is the port number to use for the local name.
839 */
840void build_local_name(char* target_str, size_t target_size, int server_port)
841{
842  snprintf(target_str, target_size, "tcp:%d", server_port);
843}
844
845int adb_main(int is_daemon, int server_port)
846{
847#if !ADB_HOST
848    int secure = 0;
849    int port;
850    char value[PROPERTY_VALUE_MAX];
851#endif
852
853    atexit(adb_cleanup);
854#ifdef HAVE_WIN32_PROC
855    SetConsoleCtrlHandler( ctrlc_handler, TRUE );
856#elif defined(HAVE_FORKEXEC)
857    // No SIGCHLD. Let the service subproc handle its children.
858    signal(SIGPIPE, SIG_IGN);
859#endif
860
861    init_transport_registration();
862
863
864#if ADB_HOST
865    HOST = 1;
866    usb_vendors_init();
867    usb_init();
868    local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
869
870    char local_name[30];
871    build_local_name(local_name, sizeof(local_name), server_port);
872    if(install_listener(local_name, "*smartsocket*", NULL)) {
873        exit(1);
874    }
875#else
876    /* run adbd in secure mode if ro.secure is set and
877    ** we are not in the emulator
878    */
879    property_get("ro.kernel.qemu", value, "");
880    if (strcmp(value, "1") != 0) {
881        property_get("ro.secure", value, "1");
882        if (strcmp(value, "1") == 0) {
883            // don't run as root if ro.secure is set...
884            secure = 1;
885
886            // ... except we allow running as root in userdebug builds if the
887            // service.adb.root property has been set by the "adb root" command
888            property_get("ro.debuggable", value, "");
889            if (strcmp(value, "1") == 0) {
890                property_get("service.adb.root", value, "");
891                if (strcmp(value, "1") == 0) {
892                    secure = 0;
893                }
894            }
895        }
896    }
897
898    /* don't listen on a port (default 5037) if running in secure mode */
899    /* don't run as root if we are running in secure mode */
900    if (secure) {
901        struct __user_cap_header_struct header;
902        struct __user_cap_data_struct cap;
903
904        if (prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) != 0) {
905            exit(1);
906        }
907
908        /* add extra groups:
909        ** AID_ADB to access the USB driver
910        ** AID_LOG to read system logs (adb logcat)
911        ** AID_INPUT to diagnose input issues (getevent)
912        ** AID_INET to diagnose network issues (netcfg, ping)
913        ** AID_GRAPHICS to access the frame buffer
914        ** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump)
915        ** AID_SDCARD_RW to allow writing to the SD card
916        ** AID_MOUNT to allow unmounting the SD card before rebooting
917        ** AID_NET_BW_STATS to read out qtaguid statistics
918        */
919        gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS,
920                           AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_RW, AID_MOUNT,
921                           AID_NET_BW_STATS };
922        if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) {
923            exit(1);
924        }
925
926        /* then switch user and group to "shell" */
927        if (setgid(AID_SHELL) != 0) {
928            exit(1);
929        }
930        if (setuid(AID_SHELL) != 0) {
931            exit(1);
932        }
933
934        /* set CAP_SYS_BOOT capability, so "adb reboot" will succeed */
935        header.version = _LINUX_CAPABILITY_VERSION;
936        header.pid = 0;
937        cap.effective = cap.permitted = (1 << CAP_SYS_BOOT);
938        cap.inheritable = 0;
939        capset(&header, &cap);
940
941        D("Local port disabled\n");
942    } else {
943        char local_name[30];
944        build_local_name(local_name, sizeof(local_name), server_port);
945        if(install_listener(local_name, "*smartsocket*", NULL)) {
946            exit(1);
947        }
948    }
949
950        /* for the device, start the usb transport if the
951        ** android usb device exists and the "service.adb.tcp.port" and
952        ** "persist.adb.tcp.port" properties are not set.
953        ** Otherwise start the network transport.
954        */
955    property_get("service.adb.tcp.port", value, "");
956    if (!value[0])
957        property_get("persist.adb.tcp.port", value, "");
958    if (sscanf(value, "%d", &port) == 1 && port > 0) {
959        // listen on TCP port specified by service.adb.tcp.port property
960        local_init(port);
961    } else if (access("/dev/android_adb", F_OK) == 0) {
962        // listen on USB
963        usb_init();
964    } else {
965        // listen on default port
966        local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
967    }
968    D("adb_main(): pre init_jdwp()\n");
969    init_jdwp();
970    D("adb_main(): post init_jdwp()\n");
971#endif
972
973    if (is_daemon)
974    {
975        // inform our parent that we are up and running.
976#ifdef HAVE_WIN32_PROC
977        DWORD  count;
978        WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL );
979#elif defined(HAVE_FORKEXEC)
980        fprintf(stderr, "OK\n");
981#endif
982        start_logging();
983    }
984    D("Event loop starting\n");
985
986    fdevent_loop();
987
988    usb_cleanup();
989
990    return 0;
991}
992
993#if ADB_HOST
994void connect_device(char* host, char* buffer, int buffer_size)
995{
996    int port, fd;
997    char* portstr = strchr(host, ':');
998    char hostbuf[100];
999    char serial[100];
1000
1001    strncpy(hostbuf, host, sizeof(hostbuf) - 1);
1002    if (portstr) {
1003        if (portstr - host >= sizeof(hostbuf)) {
1004            snprintf(buffer, buffer_size, "bad host name %s", host);
1005            return;
1006        }
1007        // zero terminate the host at the point we found the colon
1008        hostbuf[portstr - host] = 0;
1009        if (sscanf(portstr + 1, "%d", &port) == 0) {
1010            snprintf(buffer, buffer_size, "bad port number %s", portstr);
1011            return;
1012        }
1013    } else {
1014        port = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
1015    }
1016
1017    snprintf(serial, sizeof(serial), "%s:%d", hostbuf, port);
1018    if (find_transport(serial)) {
1019        snprintf(buffer, buffer_size, "already connected to %s", serial);
1020        return;
1021    }
1022
1023    fd = socket_network_client(hostbuf, port, SOCK_STREAM);
1024    if (fd < 0) {
1025        snprintf(buffer, buffer_size, "unable to connect to %s:%d", host, port);
1026        return;
1027    }
1028
1029    D("client: connected on remote on fd %d\n", fd);
1030    close_on_exec(fd);
1031    disable_tcp_nagle(fd);
1032    register_socket_transport(fd, serial, port, 0);
1033    snprintf(buffer, buffer_size, "connected to %s", serial);
1034}
1035
1036void connect_emulator(char* port_spec, char* buffer, int buffer_size)
1037{
1038    char* port_separator = strchr(port_spec, ',');
1039    if (!port_separator) {
1040        snprintf(buffer, buffer_size,
1041                "unable to parse '%s' as <console port>,<adb port>",
1042                port_spec);
1043        return;
1044    }
1045
1046    // Zero-terminate console port and make port_separator point to 2nd port.
1047    *port_separator++ = 0;
1048    int console_port = strtol(port_spec, NULL, 0);
1049    int adb_port = strtol(port_separator, NULL, 0);
1050    if (!(console_port > 0 && adb_port > 0)) {
1051        *(port_separator - 1) = ',';
1052        snprintf(buffer, buffer_size,
1053                "Invalid port numbers: Expected positive numbers, got '%s'",
1054                port_spec);
1055        return;
1056    }
1057
1058    /* Check if the emulator is already known.
1059     * Note: There's a small but harmless race condition here: An emulator not
1060     * present just yet could be registered by another invocation right
1061     * after doing this check here. However, local_connect protects
1062     * against double-registration too. From here, a better error message
1063     * can be produced. In the case of the race condition, the very specific
1064     * error message won't be shown, but the data doesn't get corrupted. */
1065    atransport* known_emulator = find_emulator_transport_by_adb_port(adb_port);
1066    if (known_emulator != NULL) {
1067        snprintf(buffer, buffer_size,
1068                "Emulator on port %d already registered.", adb_port);
1069        return;
1070    }
1071
1072    /* Check if more emulators can be registered. Similar unproblematic
1073     * race condition as above. */
1074    int candidate_slot = get_available_local_transport_index();
1075    if (candidate_slot < 0) {
1076        snprintf(buffer, buffer_size, "Cannot accept more emulators.");
1077        return;
1078    }
1079
1080    /* Preconditions met, try to connect to the emulator. */
1081    if (!local_connect_arbitrary_ports(console_port, adb_port)) {
1082        snprintf(buffer, buffer_size,
1083                "Connected to emulator on ports %d,%d", console_port, adb_port);
1084    } else {
1085        snprintf(buffer, buffer_size,
1086                "Could not connect to emulator on ports %d,%d",
1087                console_port, adb_port);
1088    }
1089}
1090#endif
1091
1092int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s)
1093{
1094    atransport *transport = NULL;
1095    char buf[4096];
1096
1097    if(!strcmp(service, "kill")) {
1098        fprintf(stderr,"adb server killed by remote request\n");
1099        fflush(stdout);
1100        adb_write(reply_fd, "OKAY", 4);
1101        usb_cleanup();
1102        exit(0);
1103    }
1104
1105#if ADB_HOST
1106    // "transport:" is used for switching transport with a specified serial number
1107    // "transport-usb:" is used for switching transport to the only USB transport
1108    // "transport-local:" is used for switching transport to the only local transport
1109    // "transport-any:" is used for switching transport to the only transport
1110    if (!strncmp(service, "transport", strlen("transport"))) {
1111        char* error_string = "unknown failure";
1112        transport_type type = kTransportAny;
1113
1114        if (!strncmp(service, "transport-usb", strlen("transport-usb"))) {
1115            type = kTransportUsb;
1116        } else if (!strncmp(service, "transport-local", strlen("transport-local"))) {
1117            type = kTransportLocal;
1118        } else if (!strncmp(service, "transport-any", strlen("transport-any"))) {
1119            type = kTransportAny;
1120        } else if (!strncmp(service, "transport:", strlen("transport:"))) {
1121            service += strlen("transport:");
1122            serial = service;
1123        }
1124
1125        transport = acquire_one_transport(CS_ANY, type, serial, &error_string);
1126
1127        if (transport) {
1128            s->transport = transport;
1129            adb_write(reply_fd, "OKAY", 4);
1130        } else {
1131            sendfailmsg(reply_fd, error_string);
1132        }
1133        return 1;
1134    }
1135
1136    // return a list of all connected devices
1137    if (!strcmp(service, "devices")) {
1138        char buffer[4096];
1139        memset(buf, 0, sizeof(buf));
1140        memset(buffer, 0, sizeof(buffer));
1141        D("Getting device list \n");
1142        list_transports(buffer, sizeof(buffer));
1143        snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer);
1144        D("Wrote device list \n");
1145        writex(reply_fd, buf, strlen(buf));
1146        return 0;
1147    }
1148
1149    // add a new TCP transport, device or emulator
1150    if (!strncmp(service, "connect:", 8)) {
1151        char buffer[4096];
1152        char* host = service + 8;
1153        if (!strncmp(host, "emu:", 4)) {
1154            connect_emulator(host + 4, buffer, sizeof(buffer));
1155        } else {
1156            connect_device(host, buffer, sizeof(buffer));
1157        }
1158        // Send response for emulator and device
1159        snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer);
1160        writex(reply_fd, buf, strlen(buf));
1161        return 0;
1162    }
1163
1164    // remove TCP transport
1165    if (!strncmp(service, "disconnect:", 11)) {
1166        char buffer[4096];
1167        memset(buffer, 0, sizeof(buffer));
1168        char* serial = service + 11;
1169        if (serial[0] == 0) {
1170            // disconnect from all TCP devices
1171            unregister_all_tcp_transports();
1172        } else {
1173            char hostbuf[100];
1174            // assume port 5555 if no port is specified
1175            if (!strchr(serial, ':')) {
1176                snprintf(hostbuf, sizeof(hostbuf) - 1, "%s:5555", serial);
1177                serial = hostbuf;
1178            }
1179            atransport *t = find_transport(serial);
1180
1181            if (t) {
1182                unregister_transport(t);
1183            } else {
1184                snprintf(buffer, sizeof(buffer), "No such device %s", serial);
1185            }
1186        }
1187
1188        snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer), buffer);
1189        writex(reply_fd, buf, strlen(buf));
1190        return 0;
1191    }
1192
1193    // returns our value for ADB_SERVER_VERSION
1194    if (!strcmp(service, "version")) {
1195        char version[12];
1196        snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION);
1197        snprintf(buf, sizeof buf, "OKAY%04x%s", (unsigned)strlen(version), version);
1198        writex(reply_fd, buf, strlen(buf));
1199        return 0;
1200    }
1201
1202    if(!strncmp(service,"get-serialno",strlen("get-serialno"))) {
1203        char *out = "unknown";
1204         transport = acquire_one_transport(CS_ANY, ttype, serial, NULL);
1205       if (transport && transport->serial) {
1206            out = transport->serial;
1207        }
1208        snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(out),out);
1209        writex(reply_fd, buf, strlen(buf));
1210        return 0;
1211    }
1212    // indicates a new emulator instance has started
1213    if (!strncmp(service,"emulator:",9)) {
1214        int  port = atoi(service+9);
1215        local_connect(port);
1216        /* we don't even need to send a reply */
1217        return 0;
1218    }
1219#endif // ADB_HOST
1220
1221    if(!strncmp(service,"forward:",8) || !strncmp(service,"killforward:",12)) {
1222        char *local, *remote, *err;
1223        int r;
1224        atransport *transport;
1225
1226        int createForward = strncmp(service,"kill",4);
1227
1228        local = service + (createForward ? 8 : 12);
1229        remote = strchr(local,';');
1230        if(remote == 0) {
1231            sendfailmsg(reply_fd, "malformed forward spec");
1232            return 0;
1233        }
1234
1235        *remote++ = 0;
1236        if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')){
1237            sendfailmsg(reply_fd, "malformed forward spec");
1238            return 0;
1239        }
1240
1241        transport = acquire_one_transport(CS_ANY, ttype, serial, &err);
1242        if (!transport) {
1243            sendfailmsg(reply_fd, err);
1244            return 0;
1245        }
1246
1247        if (createForward) {
1248            r = install_listener(local, remote, transport);
1249        } else {
1250            r = remove_listener(local, remote, transport);
1251        }
1252        if(r == 0) {
1253                /* 1st OKAY is connect, 2nd OKAY is status */
1254            writex(reply_fd, "OKAYOKAY", 8);
1255            return 0;
1256        }
1257
1258        if (createForward) {
1259            sendfailmsg(reply_fd, (r == -1) ? "cannot rebind smartsocket" : "cannot bind socket");
1260        } else {
1261            sendfailmsg(reply_fd, "cannot remove listener");
1262        }
1263        return 0;
1264    }
1265
1266    if(!strncmp(service,"get-state",strlen("get-state"))) {
1267        transport = acquire_one_transport(CS_ANY, ttype, serial, NULL);
1268        char *state = connection_state_name(transport);
1269        snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(state),state);
1270        writex(reply_fd, buf, strlen(buf));
1271        return 0;
1272    }
1273    return -1;
1274}
1275
1276#if !ADB_HOST
1277int recovery_mode = 0;
1278#endif
1279
1280int main(int argc, char **argv)
1281{
1282#if ADB_HOST
1283    adb_sysdeps_init();
1284    adb_trace_init();
1285    D("Handling commandline()\n");
1286    return adb_commandline(argc - 1, argv + 1);
1287#else
1288    if((argc > 1) && (!strcmp(argv[1],"recovery"))) {
1289        adb_device_banner = "recovery";
1290        recovery_mode = 1;
1291    }
1292
1293    start_device_log();
1294    D("Handling main()\n");
1295    return adb_main(0, DEFAULT_ADB_PORT);
1296#endif
1297}
1298