cli.c

   1 #include "libubus.h"
   2
   3 static void receive_lookup(struct ubus_context *ctx, struct ubus_object_data *obj, void *priv)
   4 {
   5         struct blob_attr *cur;
   6         char *s;
   7         int rem;
   8
   9         fprintf(stderr, "'%s' @%08x\n", obj->path, obj->id);
  10
  11         if (!obj->signature)
  12                 return;
  13
  14         blob_for_each_attr(cur, obj->signature, rem) {
  15                 s = blobmsg_format_json(cur, false);
  16                 fprintf(stderr, "\t%s\n", s);
  17                 free(s);
  18         }
  19 }
  20
  21 static void receive_data(struct ubus_request *req, int type, struct blob_attr *msg)
  22 {
  23         if (!msg)
  24                 return;
  25
  26         fprintf(stderr, "%s\n", blobmsg_format_json(msg, true));
  27 }
  28
  29
  30 static int usage(char *prog)
  31 {
  32         fprintf(stderr,
  33                 "Usage: %s <command> [arguments...]\n"
  34                 "Commands:\n"
  35                 " - list [<path>]                       List objects\n"
  36                 " - call <path> <method> [<message>]    Call an object method\n"
  37                 " - listen [<path>...]                  Listen for events\n"
  38                 "\n", prog);
  39         return 1;
  40 }
  41
  42 int main(int argc, char **argv)
  43 {
  44         static struct ubus_context *ctx;
  45         char *cmd;
  46         int ret;
  47
  48         ctx = ubus_connect(NULL);
  49         if (!ctx) {
  50                 fprintf(stderr, "Failed to connect to ubus\n");
  51                 return -1;
  52         }
  53
  54         cmd = argv[1];
  55         if (argc < 2)
  56                 return usage(argv[0]);
  57
  58         if (!strcmp(cmd, "list")) {
  59                 const char *path = NULL;
  60
  61                 if (argc == 3)
  62                         path = argv[2];
  63
  64                 ret = ubus_lookup(ctx, path, receive_lookup, NULL);
  65         } else if (!strcmp(cmd, "call")) {
  66                 uint32_t id;
  67
  68                 if (argc < 4 || argc > 5)
  69                         return usage(argv[0]);
  70
  71                 ret = ubus_lookup_id(ctx, argv[2], &id);
  72                 if (!ret)
  73                         ret = ubus_invoke(ctx, id, argv[3], NULL, receive_data, NULL);
  74         } else if (!strcmp(cmd, "listen")) {
  75                 ret = ubus_invoke(ctx, UBUS_SYSTEM_OBJECT_EVENT, "listen", NULL, receive_data, NULL);
  76         } else {
  77                 return usage(argv[0]);
  78         }
  79
  80         if (ret)
  81                 fprintf(stderr, "Failed: %s\n", ubus_strerror(ret));
  82
  83         ubus_free(ctx);
  84         return ret;
  85 }