listener.c

   1 #include "libubus.h"
   2
   3 static struct ubus_context *ctx;
   4 struct blob_buf b;
   5
   6 static const struct ubus_signature test_object_sig[] = {
   7         UBUS_METHOD_START("hello"),
   8           UBUS_ARRAY("test"),
   9                 UBUS_TABLE_START(NULL),
  10                   UBUS_FIELD(INT32, "id"),
  11                   UBUS_FIELD(STRING, "msg"),
  12                 UBUS_TABLE_END(),
  13         UBUS_METHOD_END(),
  14 };
  15
  16 static struct ubus_object_type test_object_type =
  17         UBUS_OBJECT_TYPE("test", test_object_sig);
  18
  19 static int test_hello(struct ubus_context *ctx, struct ubus_object *obj,
  20                       struct ubus_request_data *req, const char *method,
  21                       struct blob_attr *msg)
  22 {
  23         char *strbuf;
  24
  25         blob_buf_init(&b, 0);
  26         strbuf = blobmsg_alloc_string_buffer(&b, "message", 64 + strlen(obj->name));
  27         sprintf(strbuf, "%s: Hello, world\n", obj->name);
  28         blobmsg_add_string_buffer(&b);
  29         ubus_send_reply(ctx, req, b.head);
  30         return 0;
  31 }
  32
  33 static const struct ubus_method test_methods[] = {
  34         { .name = "hello", .handler = test_hello },
  35 };
  36
  37 static struct ubus_object test_object = {
  38         .name = "test",
  39         .type = &test_object_type,
  40         .methods = test_methods,
  41         .n_methods = ARRAY_SIZE(test_methods),
  42 };
  43
  44 static struct ubus_object test_object2 = {
  45         .name = "test2",
  46         .type = &test_object_type,
  47         .methods = test_methods,
  48         .n_methods = ARRAY_SIZE(test_methods),
  49 };
  50
  51 int main(int argc, char **argv)
  52 {
  53         int ret;
  54
  55         ctx = ubus_connect(NULL);
  56         if (!ctx) {
  57                 fprintf(stderr, "Failed to connect to ubus\n");
  58                 return -1;
  59         }
  60
  61         fprintf(stderr, "Connected as ID 0x%08x\n", ctx->local_id);
  62
  63         fprintf(stderr, "Publishing object\n");
  64         ret = ubus_publish(ctx, &test_object);
  65         if (ret)
  66                 fprintf(stderr, "Failed to publish object: %s\n", ubus_strerror(ret));
  67         else {
  68                 fprintf(stderr, "Object ID: %08x\n", test_object.id);
  69                 fprintf(stderr, "Object Type ID: %08x\n", test_object.type->id);
  70         }
  71
  72         fprintf(stderr, "Publishing object\n");
  73         ret = ubus_publish(ctx, &test_object2);
  74         if (ret)
  75                 fprintf(stderr, "Failed to publish object: %s\n", ubus_strerror(ret));
  76         else {
  77                 fprintf(stderr, "Object ID: %08x\n", test_object2.id);
  78                 fprintf(stderr, "Object Type ID: %08x\n", test_object2.type->id);
  79         }
  80         uloop_init();
  81         ubus_add_uloop(ctx);
  82         uloop_run();
  83
  84         ubus_free(ctx);
  85         return 0;
  86 }