adb.c revision cef31a02544d91b85481a5fa032b6126dbb32365 
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
40int HOST = 0;
41
42static const char *adb_device_banner = "device";
43
44void fatal(const char *fmt, ...)
45{
46    va_list ap;
47    va_start(ap, fmt);
48    fprintf(stderr, "error: ");
49    vfprintf(stderr, fmt, ap);
50    fprintf(stderr, "\n");
51    va_end(ap);
52    exit(-1);
53}
54
55void fatal_errno(const char *fmt, ...)
56{
57    va_list ap;
58    va_start(ap, fmt);
59    fprintf(stderr, "error: %s: ", strerror(errno));
60    vfprintf(stderr, fmt, ap);
61    fprintf(stderr, "\n");
62    va_end(ap);
63    exit(-1);
64}
65
66int   adb_trace_mask;
67
68/* read a comma/space/colum/semi-column separated list of tags
69 * from the ADB_TRACE environment variable and build the trace
70 * mask from it. note that '1' and 'all' are special cases to
71 * enable all tracing
72 */
73void  adb_trace_init(void)
74{
75    const char*  p = getenv("ADB_TRACE");
76    const char*  q;
77
78    static const struct {
79        const char*  tag;
80        int           flag;
81    } tags[] = {
82        { "1", 0 },
83        { "all", 0 },
84        { "adb", TRACE_ADB },
85        { "sockets", TRACE_SOCKETS },
86        { "packets", TRACE_PACKETS },
87        { "rwx", TRACE_RWX },
88        { "usb", TRACE_USB },
89        { "sync", TRACE_SYNC },
90        { "sysdeps", TRACE_SYSDEPS },
91        { "transport", TRACE_TRANSPORT },
92        { "jdwp", TRACE_JDWP },
93        { NULL, 0 }
94    };
95
96    if (p == NULL)
97            return;
98
99    /* use a comma/column/semi-colum/space separated list */
100    while (*p) {
101        int  len, tagn;
102
103        q = strpbrk(p, " ,:;");
104        if (q == NULL) {
105            q = p + strlen(p);
106        }
107        len = q - p;
108
109        for (tagn = 0; tags[tagn].tag != NULL; tagn++)
110        {
111            int  taglen = strlen(tags[tagn].tag);
112
113            if (len == taglen && !memcmp(tags[tagn].tag, p, len) )
114            {
115                int  flag = tags[tagn].flag;
116                if (flag == 0) {
117                    adb_trace_mask = ~0;
118                    return;
119                }
120                adb_trace_mask |= (1 << flag);
121                break;
122            }
123        }
124        p = q;
125        if (*p)
126            p++;
127    }
128}
129
130
131apacket *get_apacket(void)
132{
133    apacket *p = malloc(sizeof(apacket));
134    if(p == 0) fatal("failed to allocate an apacket");
135    memset(p, 0, sizeof(apacket) - MAX_PAYLOAD);
136    return p;
137}
138
139void put_apacket(apacket *p)
140{
141    free(p);
142}
143
144void handle_online(void)
145{
146    D("adb: online\n");
147#if !ADB_HOST
148    property_set("adb.connected","1");
149#endif
150}
151
152void handle_offline(atransport *t)
153{
154    D("adb: offline\n");
155    //Close the associated usb
156    run_transport_disconnects(t);
157#if !ADB_HOST
158    property_set("adb.connected","");
159#endif
160}
161
162#if TRACE_PACKETS
163#define DUMPMAX 32
164void print_packet(const char *label, apacket *p)
165{
166    char *tag;
167    char *x;
168    unsigned count;
169
170    switch(p->msg.command){
171    case A_SYNC: tag = "SYNC"; break;
172    case A_CNXN: tag = "CNXN" ; break;
173    case A_OPEN: tag = "OPEN"; break;
174    case A_OKAY: tag = "OKAY"; break;
175    case A_CLSE: tag = "CLSE"; break;
176    case A_WRTE: tag = "WRTE"; break;
177    default: tag = "????"; break;
178    }
179
180    fprintf(stderr, "%s: %s %08x %08x %04x \"",
181            label, tag, p->msg.arg0, p->msg.arg1, p->msg.data_length);
182    count = p->msg.data_length;
183    x = (char*) p->data;
184    if(count > DUMPMAX) {
185        count = DUMPMAX;
186        tag = "\n";
187    } else {
188        tag = "\"\n";
189    }
190    while(count-- > 0){
191        if((*x >= ' ') && (*x < 127)) {
192            fputc(*x, stderr);
193        } else {
194            fputc('.', stderr);
195        }
196        x++;
197    }
198    fprintf(stderr, tag);
199}
200#endif
201
202static void send_ready(unsigned local, unsigned remote, atransport *t)
203{
204    D("Calling send_ready \n");
205    apacket *p = get_apacket();
206    p->msg.command = A_OKAY;
207    p->msg.arg0 = local;
208    p->msg.arg1 = remote;
209    send_packet(p, t);
210}
211
212static void send_close(unsigned local, unsigned remote, atransport *t)
213{
214    D("Calling send_close \n");
215    apacket *p = get_apacket();
216    p->msg.command = A_CLSE;
217    p->msg.arg0 = local;
218    p->msg.arg1 = remote;
219    send_packet(p, t);
220}
221
222static void send_connect(atransport *t)
223{
224    D("Calling send_connect \n");
225    apacket *cp = get_apacket();
226    cp->msg.command = A_CNXN;
227    cp->msg.arg0 = A_VERSION;
228    cp->msg.arg1 = MAX_PAYLOAD;
229    snprintf((char*) cp->data, sizeof cp->data, "%s::",
230            HOST ? "host" : adb_device_banner);
231    cp->msg.data_length = strlen((char*) cp->data) + 1;
232    send_packet(cp, t);
233#if ADB_HOST
234        /* XXX why sleep here? */
235    // allow the device some time to respond to the connect message
236    adb_sleep_ms(1000);
237#endif
238}
239
240static char *connection_state_name(atransport *t)
241{
242    if (t == NULL) {
243        return "unknown";
244    }
245
246    switch(t->connection_state) {
247    case CS_BOOTLOADER:
248        return "bootloader";
249    case CS_DEVICE:
250        return "device";
251    case CS_OFFLINE:
252        return "offline";
253    default:
254        return "unknown";
255    }
256}
257
258void parse_banner(char *banner, atransport *t)
259{
260    char *type, *product, *end;
261
262    D("parse_banner: %s\n", banner);
263    type = banner;
264    product = strchr(type, ':');
265    if(product) {
266        *product++ = 0;
267    } else {
268        product = "";
269    }
270
271        /* remove trailing ':' */
272    end = strchr(product, ':');
273    if(end) *end = 0;
274
275        /* save product name in device structure */
276    if (t->product == NULL) {
277        t->product = strdup(product);
278    } else if (strcmp(product, t->product) != 0) {
279        free(t->product);
280        t->product = strdup(product);
281    }
282
283    if(!strcmp(type, "bootloader")){
284        D("setting connection_state to CS_BOOTLOADER\n");
285        t->connection_state = CS_BOOTLOADER;
286        update_transports();
287        return;
288    }
289
290    if(!strcmp(type, "device")) {
291        D("setting connection_state to CS_DEVICE\n");
292        t->connection_state = CS_DEVICE;
293        update_transports();
294        return;
295    }
296
297    if(!strcmp(type, "recovery")) {
298        D("setting connection_state to CS_RECOVERY\n");
299        t->connection_state = CS_RECOVERY;
300        update_transports();
301        return;
302    }
303
304    t->connection_state = CS_HOST;
305}
306
307void handle_packet(apacket *p, atransport *t)
308{
309    asocket *s;
310
311    D("handle_packet() %d\n", p->msg.command);
312
313    print_packet("recv", p);
314
315    switch(p->msg.command){
316    case A_SYNC:
317        if(p->msg.arg0){
318            send_packet(p, t);
319            if(HOST) send_connect(t);
320        } else {
321            t->connection_state = CS_OFFLINE;
322            handle_offline(t);
323            send_packet(p, t);
324        }
325        return;
326
327    case A_CNXN: /* CONNECT(version, maxdata, "system-id-string") */
328            /* XXX verify version, etc */
329        if(t->connection_state != CS_OFFLINE) {
330            t->connection_state = CS_OFFLINE;
331            handle_offline(t);
332        }
333        parse_banner((char*) p->data, t);
334        handle_online();
335        if(!HOST) send_connect(t);
336        break;
337
338    case A_OPEN: /* OPEN(local-id, 0, "destination") */
339        if(t->connection_state != CS_OFFLINE) {
340            char *name = (char*) p->data;
341            name[p->msg.data_length > 0 ? p->msg.data_length - 1 : 0] = 0;
342            s = create_local_service_socket(name);
343            if(s == 0) {
344                send_close(0, p->msg.arg0, t);
345            } else {
346                s->peer = create_remote_socket(p->msg.arg0, t);
347                s->peer->peer = s;
348                send_ready(s->id, s->peer->id, t);
349                s->ready(s);
350            }
351        }
352        break;
353
354    case A_OKAY: /* READY(local-id, remote-id, "") */
355        if(t->connection_state != CS_OFFLINE) {
356            if((s = find_local_socket(p->msg.arg1))) {
357                if(s->peer == 0) {
358                    s->peer = create_remote_socket(p->msg.arg0, t);
359                    s->peer->peer = s;
360                }
361                s->ready(s);
362            }
363        }
364        break;
365
366    case A_CLSE: /* CLOSE(local-id, remote-id, "") */
367        if(t->connection_state != CS_OFFLINE) {
368            if((s = find_local_socket(p->msg.arg1))) {
369                s->close(s);
370            }
371        }
372        break;
373
374    case A_WRTE:
375        if(t->connection_state != CS_OFFLINE) {
376            if((s = find_local_socket(p->msg.arg1))) {
377                unsigned rid = p->msg.arg0;
378                p->len = p->msg.data_length;
379
380                if(s->enqueue(s, p) == 0) {
381                    D("Enqueue the socket\n");
382                    send_ready(s->id, rid, t);
383                }
384                return;
385            }
386        }
387        break;
388
389    default:
390        printf("handle_packet: what is %08x?!\n", p->msg.command);
391    }
392
393    put_apacket(p);
394}
395
396alistener listener_list = {
397    .next = &listener_list,
398    .prev = &listener_list,
399};
400
401static void ss_listener_event_func(int _fd, unsigned ev, void *_l)
402{
403    asocket *s;
404
405    if(ev & FDE_READ) {
406        struct sockaddr addr;
407        socklen_t alen;
408        int fd;
409
410        alen = sizeof(addr);
411        fd = adb_socket_accept(_fd, &addr, &alen);
412        if(fd < 0) return;
413
414        adb_socket_setbufsize(fd, CHUNK_SIZE);
415
416        s = create_local_socket(fd);
417        if(s) {
418            connect_to_smartsocket(s);
419            return;
420        }
421
422        adb_close(fd);
423    }
424}
425
426static void listener_event_func(int _fd, unsigned ev, void *_l)
427{
428    alistener *l = _l;
429    asocket *s;
430
431    if(ev & FDE_READ) {
432        struct sockaddr addr;
433        socklen_t alen;
434        int fd;
435
436        alen = sizeof(addr);
437        fd = adb_socket_accept(_fd, &addr, &alen);
438        if(fd < 0) return;
439
440        s = create_local_socket(fd);
441        if(s) {
442            s->transport = l->transport;
443            connect_to_remote(s, l->connect_to);
444            return;
445        }
446
447        adb_close(fd);
448    }
449}
450
451static void  free_listener(alistener*  l)
452{
453    if (l->next) {
454        l->next->prev = l->prev;
455        l->prev->next = l->next;
456        l->next = l->prev = l;
457    }
458
459    // closes the corresponding fd
460    fdevent_remove(&l->fde);
461
462    if (l->local_name)
463        free((char*)l->local_name);
464
465    if (l->connect_to)
466        free((char*)l->connect_to);
467
468    if (l->transport) {
469        remove_transport_disconnect(l->transport, &l->disconnect);
470    }
471    free(l);
472}
473
474static void listener_disconnect(void*  _l, atransport*  t)
475{
476    alistener*  l = _l;
477
478    free_listener(l);
479}
480
481int local_name_to_fd(const char *name)
482{
483    int port;
484
485    if(!strncmp("tcp:", name, 4)){
486        int  ret;
487        port = atoi(name + 4);
488        ret = socket_loopback_server(port, SOCK_STREAM);
489        return ret;
490    }
491#ifndef HAVE_WIN32_IPC  /* no Unix-domain sockets on Win32 */
492    // It's non-sensical to support the "reserved" space on the adb host side
493    if(!strncmp(name, "local:", 6)) {
494        return socket_local_server(name + 6,
495                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
496    } else if(!strncmp(name, "localabstract:", 14)) {
497        return socket_local_server(name + 14,
498                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
499    } else if(!strncmp(name, "localfilesystem:", 16)) {
500        return socket_local_server(name + 16,
501                ANDROID_SOCKET_NAMESPACE_FILESYSTEM, SOCK_STREAM);
502    }
503
504#endif
505    printf("unknown local portname '%s'\n", name);
506    return -1;
507}
508
509static int remove_listener(const char *local_name, const char *connect_to, atransport* transport)
510{
511    alistener *l;
512
513    for (l = listener_list.next; l != &listener_list; l = l->next) {
514        if (!strcmp(local_name, l->local_name) &&
515            !strcmp(connect_to, l->connect_to) &&
516            l->transport && l->transport == transport) {
517
518            listener_disconnect(l, transport);
519            return 0;
520        }
521    }
522
523    return -1;
524}
525
526static int install_listener(const char *local_name, const char *connect_to, atransport* transport)
527{
528    alistener *l;
529
530    //printf("install_listener('%s','%s')\n", local_name, connect_to);
531
532    for(l = listener_list.next; l != &listener_list; l = l->next){
533        if(strcmp(local_name, l->local_name) == 0) {
534            char *cto;
535
536                /* can't repurpose a smartsocket */
537            if(l->connect_to[0] == '*') {
538                return -1;
539            }
540
541            cto = strdup(connect_to);
542            if(cto == 0) {
543                return -1;
544            }
545
546            //printf("rebinding '%s' to '%s'\n", local_name, connect_to);
547            free((void*) l->connect_to);
548            l->connect_to = cto;
549            if (l->transport != transport) {
550                remove_transport_disconnect(l->transport, &l->disconnect);
551                l->transport = transport;
552                add_transport_disconnect(l->transport, &l->disconnect);
553            }
554            return 0;
555        }
556    }
557
558    if((l = calloc(1, sizeof(alistener))) == 0) goto nomem;
559    if((l->local_name = strdup(local_name)) == 0) goto nomem;
560    if((l->connect_to = strdup(connect_to)) == 0) goto nomem;
561
562
563    l->fd = local_name_to_fd(local_name);
564    if(l->fd < 0) {
565        free((void*) l->local_name);
566        free((void*) l->connect_to);
567        free(l);
568        printf("cannot bind '%s'\n", local_name);
569        return -2;
570    }
571
572    close_on_exec(l->fd);
573    if(!strcmp(l->connect_to, "*smartsocket*")) {
574        fdevent_install(&l->fde, l->fd, ss_listener_event_func, l);
575    } else {
576        fdevent_install(&l->fde, l->fd, listener_event_func, l);
577    }
578    fdevent_set(&l->fde, FDE_READ);
579
580    l->next = &listener_list;
581    l->prev = listener_list.prev;
582    l->next->prev = l;
583    l->prev->next = l;
584    l->transport = transport;
585
586    if (transport) {
587        l->disconnect.opaque = l;
588        l->disconnect.func   = listener_disconnect;
589        add_transport_disconnect(transport, &l->disconnect);
590    }
591    return 0;
592
593nomem:
594    fatal("cannot allocate listener");
595    return 0;
596}
597
598#ifdef HAVE_FORKEXEC
599static void sigchld_handler(int n)
600{
601    int status;
602    while(waitpid(-1, &status, WNOHANG) > 0) ;
603}
604#endif
605
606#ifdef HAVE_WIN32_PROC
607static BOOL WINAPI ctrlc_handler(DWORD type)
608{
609    exit(STATUS_CONTROL_C_EXIT);
610    return TRUE;
611}
612#endif
613
614static void adb_cleanup(void)
615{
616    usb_cleanup();
617}
618
619void start_logging(void)
620{
621#ifdef HAVE_WIN32_PROC
622    char    temp[ MAX_PATH ];
623    FILE*   fnul;
624    FILE*   flog;
625
626    GetTempPath( sizeof(temp) - 8, temp );
627    strcat( temp, "adb.log" );
628
629    /* Win32 specific redirections */
630    fnul = fopen( "NUL", "rt" );
631    if (fnul != NULL)
632        stdin[0] = fnul[0];
633
634    flog = fopen( temp, "at" );
635    if (flog == NULL)
636        flog = fnul;
637
638    setvbuf( flog, NULL, _IONBF, 0 );
639
640    stdout[0] = flog[0];
641    stderr[0] = flog[0];
642    fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
643#else
644    int fd;
645
646    fd = unix_open("/dev/null", O_RDONLY);
647    dup2(fd, 0);
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    fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
656#endif
657}
658
659#if !ADB_HOST
660void start_device_log(void)
661{
662    int fd;
663    char    path[PATH_MAX];
664    struct tm now;
665    time_t t;
666    char value[PROPERTY_VALUE_MAX];
667
668    // read the trace mask from persistent property persist.adb.trace_mask
669    // give up if the property is not set or cannot be parsed
670    property_get("persist.adb.trace_mask", value, "");
671    if (sscanf(value, "%x", &adb_trace_mask) != 1)
672        return;
673
674    adb_mkdir("/data/adb", 0775);
675    tzset();
676    time(&t);
677    localtime_r(&t, &now);
678    strftime(path, sizeof(path),
679                "/data/adb/adb-%Y-%m-%d-%H-%M-%S.txt",
680                &now);
681    fd = unix_open(path, O_WRONLY | O_CREAT | O_TRUNC, 0640);
682    if (fd < 0)
683        return;
684
685    // redirect stdout and stderr to the log file
686    dup2(fd, 1);
687    dup2(fd, 2);
688    fprintf(stderr,"--- adb starting (pid %d) ---\n", getpid());
689
690    fd = unix_open("/dev/null", O_RDONLY);
691    dup2(fd, 0);
692}
693#endif
694
695#if ADB_HOST
696int launch_server()
697{
698#ifdef HAVE_WIN32_PROC
699    /* we need to start the server in the background                    */
700    /* we create a PIPE that will be used to wait for the server's "OK" */
701    /* message since the pipe handles must be inheritable, we use a     */
702    /* security attribute                                               */
703    HANDLE                pipe_read, pipe_write;
704    SECURITY_ATTRIBUTES   sa;
705    STARTUPINFO           startup;
706    PROCESS_INFORMATION   pinfo;
707    char                  program_path[ MAX_PATH ];
708    int                   ret;
709
710    sa.nLength = sizeof(sa);
711    sa.lpSecurityDescriptor = NULL;
712    sa.bInheritHandle = TRUE;
713
714    /* create pipe, and ensure its read handle isn't inheritable */
715    ret = CreatePipe( &pipe_read, &pipe_write, &sa, 0 );
716    if (!ret) {
717        fprintf(stderr, "CreatePipe() failure, error %ld\n", GetLastError() );
718        return -1;
719    }
720
721    SetHandleInformation( pipe_read, HANDLE_FLAG_INHERIT, 0 );
722
723    ZeroMemory( &startup, sizeof(startup) );
724    startup.cb = sizeof(startup);
725    startup.hStdInput  = GetStdHandle( STD_INPUT_HANDLE );
726    startup.hStdOutput = pipe_write;
727    startup.hStdError  = GetStdHandle( STD_ERROR_HANDLE );
728    startup.dwFlags    = STARTF_USESTDHANDLES;
729
730    ZeroMemory( &pinfo, sizeof(pinfo) );
731
732    /* get path of current program */
733    GetModuleFileName( NULL, program_path, sizeof(program_path) );
734
735    ret = CreateProcess(
736            program_path,                              /* program path  */
737            "adb fork-server server",
738                                    /* the fork-server argument will set the
739                                       debug = 2 in the child           */
740            NULL,                   /* process handle is not inheritable */
741            NULL,                    /* thread handle is not inheritable */
742            TRUE,                          /* yes, inherit some handles */
743            DETACHED_PROCESS, /* the new process doesn't have a console */
744            NULL,                     /* use parent's environment block */
745            NULL,                    /* use parent's starting directory */
746            &startup,                 /* startup info, i.e. std handles */
747            &pinfo );
748
749    CloseHandle( pipe_write );
750
751    if (!ret) {
752        fprintf(stderr, "CreateProcess failure, error %ld\n", GetLastError() );
753        CloseHandle( pipe_read );
754        return -1;
755    }
756
757    CloseHandle( pinfo.hProcess );
758    CloseHandle( pinfo.hThread );
759
760    /* wait for the "OK\n" message */
761    {
762        char  temp[3];
763        DWORD  count;
764
765        ret = ReadFile( pipe_read, temp, 3, &count, NULL );
766        CloseHandle( pipe_read );
767        if ( !ret ) {
768            fprintf(stderr, "could not read ok from ADB Server, error = %ld\n", GetLastError() );
769            return -1;
770        }
771        if (count != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') {
772            fprintf(stderr, "ADB server didn't ACK\n" );
773            return -1;
774        }
775    }
776#elif defined(HAVE_FORKEXEC)
777    char    path[PATH_MAX];
778    int     fd[2];
779
780    // set up a pipe so the child can tell us when it is ready.
781    // fd[0] will be parent's end, and fd[1] will get mapped to stderr in the child.
782    if (pipe(fd)) {
783        fprintf(stderr, "pipe failed in launch_server, errno: %d\n", errno);
784        return -1;
785    }
786    get_my_path(path);
787    pid_t pid = fork();
788    if(pid < 0) return -1;
789
790    if (pid == 0) {
791        // child side of the fork
792
793        // redirect stderr to the pipe
794        // we use stderr instead of stdout due to stdout's buffering behavior.
795        adb_close(fd[0]);
796        dup2(fd[1], STDERR_FILENO);
797        adb_close(fd[1]);
798
799        // child process
800        int result = execl(path, "adb", "fork-server", "server", NULL);
801        // this should not return
802        fprintf(stderr, "OOPS! execl returned %d, errno: %d\n", result, errno);
803    } else  {
804        // parent side of the fork
805
806        char  temp[3];
807
808        temp[0] = 'A'; temp[1] = 'B'; temp[2] = 'C';
809        // wait for the "OK\n" message
810        adb_close(fd[1]);
811        int ret = adb_read(fd[0], temp, 3);
812        adb_close(fd[0]);
813        if (ret < 0) {
814            fprintf(stderr, "could not read ok from ADB Server, errno = %d\n", errno);
815            return -1;
816        }
817        if (ret != 3 || temp[0] != 'O' || temp[1] != 'K' || temp[2] != '\n') {
818            fprintf(stderr, "ADB server didn't ACK\n" );
819            return -1;
820        }
821
822        setsid();
823    }
824#else
825#error "cannot implement background server start on this platform"
826#endif
827    return 0;
828}
829#endif
830
831int adb_main(int is_daemon)
832{
833#if !ADB_HOST
834    int secure = 0;
835    int port;
836    char value[PROPERTY_VALUE_MAX];
837#endif
838
839    atexit(adb_cleanup);
840#ifdef HAVE_WIN32_PROC
841    SetConsoleCtrlHandler( ctrlc_handler, TRUE );
842#elif defined(HAVE_FORKEXEC)
843    signal(SIGCHLD, sigchld_handler);
844    signal(SIGPIPE, SIG_IGN);
845#endif
846
847    init_transport_registration();
848
849
850#if ADB_HOST
851    HOST = 1;
852    usb_vendors_init();
853    usb_init();
854    local_init(ADB_LOCAL_TRANSPORT_PORT);
855
856    if(install_listener("tcp:5037", "*smartsocket*", NULL)) {
857        exit(1);
858    }
859#else
860    /* run adbd in secure mode if ro.secure is set and
861    ** we are not in the emulator
862    */
863    property_get("ro.kernel.qemu", value, "");
864    if (strcmp(value, "1") != 0) {
865        property_get("ro.secure", value, "");
866        if (strcmp(value, "1") == 0) {
867            // don't run as root if ro.secure is set...
868            secure = 1;
869
870            // ... except we allow running as root in userdebug builds if the
871            // service.adb.root property has been set by the "adb root" command
872            property_get("ro.debuggable", value, "");
873            if (strcmp(value, "1") == 0) {
874                property_get("service.adb.root", value, "");
875                if (strcmp(value, "1") == 0) {
876                    secure = 0;
877                }
878            }
879        }
880    }
881
882    /* don't listen on port 5037 if we are running in secure mode */
883    /* don't run as root if we are running in secure mode */
884    if (secure) {
885        struct __user_cap_header_struct header;
886        struct __user_cap_data_struct cap;
887
888        prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0);
889
890        /* add extra groups:
891        ** AID_ADB to access the USB driver
892        ** AID_LOG to read system logs (adb logcat)
893        ** AID_INPUT to diagnose input issues (getevent)
894        ** AID_INET to diagnose network issues (netcfg, ping)
895        ** AID_GRAPHICS to access the frame buffer
896        ** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump)
897        ** AID_SDCARD_RW to allow writing to the SD card
898        */
899        gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS,
900                           AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_RW };
901        setgroups(sizeof(groups)/sizeof(groups[0]), groups);
902
903        /* then switch user and group to "shell" */
904        setgid(AID_SHELL);
905        setuid(AID_SHELL);
906
907        /* set CAP_SYS_BOOT capability, so "adb reboot" will succeed */
908        header.version = _LINUX_CAPABILITY_VERSION;
909        header.pid = 0;
910        cap.effective = cap.permitted = (1 << CAP_SYS_BOOT);
911        cap.inheritable = 0;
912        capset(&header, &cap);
913
914        D("Local port 5037 disabled\n");
915    } else {
916        if(install_listener("tcp:5037", "*smartsocket*", NULL)) {
917            exit(1);
918        }
919    }
920
921        /* for the device, start the usb transport if the
922        ** android usb device exists and "service.adb.tcp"
923        ** is not set, otherwise start the network transport.
924        */
925    property_get("service.adb.tcp.port", value, "0");
926    if (sscanf(value, "%d", &port) == 1 && port > 0) {
927        // listen on TCP port specified by service.adb.tcp.port property
928        local_init(port);
929    } else if (access("/dev/android_adb", F_OK) == 0) {
930        // listen on USB
931        usb_init();
932    } else {
933        // listen on default port
934        local_init(ADB_LOCAL_TRANSPORT_PORT);
935    }
936    init_jdwp();
937#endif
938
939    if (is_daemon)
940    {
941        // inform our parent that we are up and running.
942#ifdef HAVE_WIN32_PROC
943        DWORD  count;
944        WriteFile( GetStdHandle( STD_OUTPUT_HANDLE ), "OK\n", 3, &count, NULL );
945#elif defined(HAVE_FORKEXEC)
946        fprintf(stderr, "OK\n");
947#endif
948        start_logging();
949    }
950
951    fdevent_loop();
952
953    usb_cleanup();
954
955    return 0;
956}
957
958int handle_host_request(char *service, transport_type ttype, char* serial, int reply_fd, asocket *s)
959{
960    atransport *transport = NULL;
961    char buf[4096];
962
963    if(!strcmp(service, "kill")) {
964        fprintf(stderr,"adb server killed by remote request\n");
965        fflush(stdout);
966        adb_write(reply_fd, "OKAY", 4);
967        usb_cleanup();
968        exit(0);
969    }
970
971#if ADB_HOST
972    // "transport:" is used for switching transport with a specified serial number
973    // "transport-usb:" is used for switching transport to the only USB transport
974    // "transport-local:" is used for switching transport to the only local transport
975    // "transport-any:" is used for switching transport to the only transport
976    if (!strncmp(service, "transport", strlen("transport"))) {
977        char* error_string = "unknown failure";
978        transport_type type = kTransportAny;
979
980        if (!strncmp(service, "transport-usb", strlen("transport-usb"))) {
981            type = kTransportUsb;
982        } else if (!strncmp(service, "transport-local", strlen("transport-local"))) {
983            type = kTransportLocal;
984        } else if (!strncmp(service, "transport-any", strlen("transport-any"))) {
985            type = kTransportAny;
986        } else if (!strncmp(service, "transport:", strlen("transport:"))) {
987            service += strlen("transport:");
988            serial = strdup(service);
989        }
990
991        transport = acquire_one_transport(CS_ANY, type, serial, &error_string);
992
993        if (transport) {
994            s->transport = transport;
995            adb_write(reply_fd, "OKAY", 4);
996        } else {
997            sendfailmsg(reply_fd, error_string);
998        }
999        return 1;
1000    }
1001
1002    // return a list of all connected devices
1003    if (!strcmp(service, "devices")) {
1004        char buffer[4096];
1005        memset(buf, 0, sizeof(buf));
1006        memset(buffer, 0, sizeof(buffer));
1007        D("Getting device list \n");
1008        list_transports(buffer, sizeof(buffer));
1009        snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer);
1010        D("Wrote device list \n");
1011        writex(reply_fd, buf, strlen(buf));
1012        return 0;
1013    }
1014
1015    // add a new TCP transport
1016    if (!strncmp(service, "connect:", 8)) {
1017        char buffer[4096];
1018        int port, fd;
1019        char* host = service + 8;
1020        char* portstr = strchr(host, ':');
1021
1022        if (!portstr) {
1023            snprintf(buffer, sizeof(buffer), "unable to parse %s as <host>:<port>\n", host);
1024            goto done;
1025        }
1026        // zero terminate host by overwriting the ':'
1027        *portstr++ = 0;
1028        if (sscanf(portstr, "%d", &port) == 0) {
1029            snprintf(buffer, sizeof(buffer), "bad port number %s\n", portstr);
1030            goto done;
1031        }
1032
1033        fd = socket_network_client(host, port, SOCK_STREAM);
1034        if (fd < 0) {
1035            snprintf(buffer, sizeof(buffer), "unable to connect to %s:%d\n", host, port);
1036            goto done;
1037        }
1038
1039        D("client: connected on remote on fd %d\n", fd);
1040        close_on_exec(fd);
1041        disable_tcp_nagle(fd);
1042        snprintf(buf, sizeof buf, "%s:%d", host, port);
1043        register_socket_transport(fd, buf, port, 0);
1044        snprintf(buffer, sizeof(buffer), "connected to %s:%d\n", host, port);
1045
1046done:
1047        snprintf(buf, sizeof(buf), "OKAY%04x%s",(unsigned)strlen(buffer),buffer);
1048        writex(reply_fd, buf, strlen(buf));
1049        return 0;
1050    }
1051
1052    // returns our value for ADB_SERVER_VERSION
1053    if (!strcmp(service, "version")) {
1054        char version[12];
1055        snprintf(version, sizeof version, "%04x", ADB_SERVER_VERSION);
1056        snprintf(buf, sizeof buf, "OKAY%04x%s", (unsigned)strlen(version), version);
1057        writex(reply_fd, buf, strlen(buf));
1058        return 0;
1059    }
1060
1061    if(!strncmp(service,"get-serialno",strlen("get-serialno"))) {
1062        char *out = "unknown";
1063         transport = acquire_one_transport(CS_ANY, ttype, serial, NULL);
1064       if (transport && transport->serial) {
1065            out = transport->serial;
1066        }
1067        snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(out),out);
1068        writex(reply_fd, buf, strlen(buf));
1069        return 0;
1070    }
1071    // indicates a new emulator instance has started
1072    if (!strncmp(service,"emulator:",9)) {
1073        int  port = atoi(service+9);
1074        local_connect(port);
1075        /* we don't even need to send a reply */
1076        return 0;
1077    }
1078#endif // ADB_HOST
1079
1080    if(!strncmp(service,"forward:",8) || !strncmp(service,"killforward:",12)) {
1081        char *local, *remote, *err;
1082        int r;
1083        atransport *transport;
1084
1085        int createForward = strncmp(service,"kill",4);
1086
1087        local = service + (createForward ? 8 : 12);
1088        remote = strchr(local,';');
1089        if(remote == 0) {
1090            sendfailmsg(reply_fd, "malformed forward spec");
1091            return 0;
1092        }
1093
1094        *remote++ = 0;
1095        if((local[0] == 0) || (remote[0] == 0) || (remote[0] == '*')){
1096            sendfailmsg(reply_fd, "malformed forward spec");
1097            return 0;
1098        }
1099
1100        transport = acquire_one_transport(CS_ANY, ttype, serial, &err);
1101        if (!transport) {
1102            sendfailmsg(reply_fd, err);
1103            return 0;
1104        }
1105
1106        if (createForward) {
1107            r = install_listener(local, remote, transport);
1108        } else {
1109            r = remove_listener(local, remote, transport);
1110        }
1111        if(r == 0) {
1112                /* 1st OKAY is connect, 2nd OKAY is status */
1113            writex(reply_fd, "OKAYOKAY", 8);
1114            return 0;
1115        }
1116
1117        if (createForward) {
1118            sendfailmsg(reply_fd, (r == -1) ? "cannot rebind smartsocket" : "cannot bind socket");
1119        } else {
1120            sendfailmsg(reply_fd, "cannot remove listener");
1121        }
1122        return 0;
1123    }
1124
1125    if(!strncmp(service,"get-state",strlen("get-state"))) {
1126        transport = acquire_one_transport(CS_ANY, ttype, serial, NULL);
1127        char *state = connection_state_name(transport);
1128        snprintf(buf, sizeof buf, "OKAY%04x%s",(unsigned)strlen(state),state);
1129        writex(reply_fd, buf, strlen(buf));
1130        return 0;
1131    }
1132    return -1;
1133}
1134
1135#if !ADB_HOST
1136int recovery_mode = 0;
1137#endif
1138
1139int main(int argc, char **argv)
1140{
1141    adb_trace_init();
1142#if ADB_HOST
1143    adb_sysdeps_init();
1144    return adb_commandline(argc - 1, argv + 1);
1145#else
1146    if((argc > 1) && (!strcmp(argv[1],"recovery"))) {
1147        adb_device_banner = "recovery";
1148        recovery_mode = 1;
1149    }
1150
1151    start_device_log();
1152    return adb_main(0);
1153#endif
1154}
1155