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      1 /* Copyright 2008 The Android Open Source Project
      2  */
      3 
      4 #include <stdio.h>
      5 #include <stdlib.h>
      6 #include <string.h>
      7 #include <errno.h>
      8 
      9 #include "binder.h"
     10 
     11 uint32_t svcmgr_lookup(struct binder_state *bs, uint32_t target, const char *name)
     12 {
     13     uint32_t handle;
     14     unsigned iodata[512/4];
     15     struct binder_io msg, reply;
     16 
     17     bio_init(&msg, iodata, sizeof(iodata), 4);
     18     bio_put_uint32(&msg, 0);  // strict mode header
     19     bio_put_string16_x(&msg, SVC_MGR_NAME);
     20     bio_put_string16_x(&msg, name);
     21 
     22     if (binder_call(bs, &msg, &reply, target, SVC_MGR_CHECK_SERVICE))
     23         return 0;
     24 
     25     handle = bio_get_ref(&reply);
     26 
     27     if (handle)
     28         binder_acquire(bs, handle);
     29 
     30     binder_done(bs, &msg, &reply);
     31 
     32     return handle;
     33 }
     34 
     35 int svcmgr_publish(struct binder_state *bs, uint32_t target, const char *name, void *ptr)
     36 {
     37     int status;
     38     unsigned iodata[512/4];
     39     struct binder_io msg, reply;
     40 
     41     bio_init(&msg, iodata, sizeof(iodata), 4);
     42     bio_put_uint32(&msg, 0);  // strict mode header
     43     bio_put_string16_x(&msg, SVC_MGR_NAME);
     44     bio_put_string16_x(&msg, name);
     45     bio_put_obj(&msg, ptr);
     46 
     47     if (binder_call(bs, &msg, &reply, target, SVC_MGR_ADD_SERVICE))
     48         return -1;
     49 
     50     status = bio_get_uint32(&reply);
     51 
     52     binder_done(bs, &msg, &reply);
     53 
     54     return status;
     55 }
     56 
     57 unsigned token;
     58 
     59 int main(int argc, char **argv)
     60 {
     61     struct binder_state *bs;
     62     uint32_t svcmgr = BINDER_SERVICE_MANAGER;
     63     uint32_t handle;
     64 
     65     bs = binder_open(128*1024);
     66     if (!bs) {
     67         fprintf(stderr, "failed to open binder driver\n");
     68         return -1;
     69     }
     70 
     71     argc--;
     72     argv++;
     73     while (argc > 0) {
     74         if (!strcmp(argv[0],"alt")) {
     75             handle = svcmgr_lookup(bs, svcmgr, "alt_svc_mgr");
     76             if (!handle) {
     77                 fprintf(stderr,"cannot find alt_svc_mgr\n");
     78                 return -1;
     79             }
     80             svcmgr = handle;
     81             fprintf(stderr,"svcmgr is via %x\n", handle);
     82         } else if (!strcmp(argv[0],"lookup")) {
     83             if (argc < 2) {
     84                 fprintf(stderr,"argument required\n");
     85                 return -1;
     86             }
     87             handle = svcmgr_lookup(bs, svcmgr, argv[1]);
     88             fprintf(stderr,"lookup(%s) = %x\n", argv[1], handle);
     89             argc--;
     90             argv++;
     91         } else if (!strcmp(argv[0],"publish")) {
     92             if (argc < 2) {
     93                 fprintf(stderr,"argument required\n");
     94                 return -1;
     95             }
     96             svcmgr_publish(bs, svcmgr, argv[1], &token);
     97             argc--;
     98             argv++;
     99         } else {
    100             fprintf(stderr,"unknown command %s\n", argv[0]);
    101             return -1;
    102         }
    103         argc--;
    104         argv++;
    105     }
    106     return 0;
    107 }
    108