Support reading OpenRPC documents from a file

Bump liberty, it generated incorrect help messages.

json-rpc-shell.adoc

@@ -76,9 +76,9 @@ Protocol
 *-o* _ORIGIN_, *--origin*=_ORIGIN_::
 	Set the HTTP Origin header to _ORIGIN_.  Some servers may need this.
 
-*-O*, *--openrpc*::
+*-O*[__PATH__], *--openrpc*[**=**__PATH__]::
 	Call "rpc.discover" upon start-up in order to pull in OpenRPC data for
-	tab completion of method names.
+	tab completion of method names.  If a path is given, it is read from a file.
 
 Program information
 ~~~~~~~~~~~~~~~~~~~

json-rpc-shell.c

@@ -1096,7 +1096,6 @@ static struct app_context
 	bool compact;                       ///< Whether to not pretty print
 	bool verbose;                       ///< Print requests
 	bool trust_all;                     ///< Don't verify peer certificates
-	bool openrpc;                       ///< OpenRPC method name completion
 
 	bool null_as_id;                    ///< JSON null is used as an ID
 	int64_t next_id;                    ///< Next autogenerated ID
@@ -3243,16 +3242,17 @@ parse_rpc_discover (struct app_context *ctx, struct str *buf, struct error **e)
 {
 	// Just optimistically punch through, I don't have time for this shit
 	json_error_t error;
-	json_t *response = NULL, *result = NULL, *value = NULL;
+	json_t *response = NULL, *methods = NULL, *value = NULL;
 	if (!(response = json_loadb (buf->str, buf->len, 0, &error)))
 		error_set (e, "parse failure: %s", error.text);
-	else if (!(result = json_object_get (response, "result"))
+	else if ((!(methods = json_object_get (response, "result"))
-		|| !(result = json_object_get (result, "methods")))
+		|| !(methods = json_object_get (methods, "methods")))
+		&& !(methods = json_object_get (response, "methods")))
 		error_set (e, "unsupported");
 	else
 	{
 		const char *name = NULL;
-		for (size_t i = 0; (value = json_array_get (result, i)); i++)
+		for (size_t i = 0; (value = json_array_get (methods, i)); i++)
 			if ((value = json_object_get (value, "name"))
 			 && (name = json_string_value (value)))
 				str_map_set (&ctx->methods, name, (void *) 1);
@@ -3261,17 +3261,26 @@ parse_rpc_discover (struct app_context *ctx, struct str *buf, struct error **e)
 }
 
 static void
-init_openrpc (struct app_context *ctx)
+init_openrpc (struct app_context *ctx, const char *openrpc)
 {
-	if (!ctx->openrpc)
+	// Three possibilities: NULL for not requested, "" for rpc.discover,
+	// and anything else has to be a path to a JSON file
+	if (!openrpc)
 		return;
 
-	json_t *id = json_integer (ctx->next_id++);
 	struct str buf = str_make ();
 	struct error *error;
-	if (!(error = json_rpc_call_raw (ctx, "rpc.discover", id, NULL, &buf)))
+	if (*openrpc)
+		// This may or may not have a protocol envelope
+		read_file (openrpc, &buf, &error);
+	else
+	{
+		json_t *id = json_integer (ctx->next_id++);
+		error = json_rpc_call_raw (ctx, "rpc.discover", id, NULL, &buf);
+		json_decref (id);
+	}
+	if (!error)
 		parse_rpc_discover (ctx, &buf, &error);
-	json_decref (id);
 
 	if (error)
 	{
@@ -3536,7 +3545,7 @@ init_watchers (struct app_context *ctx)
 
 static void
 parse_program_arguments (struct app_context *ctx, int argc, char **argv,
-	const char **origin, const char **endpoint)
+	const char **origin, const char **endpoint, const char **openrpc)
 {
 	static const struct opt opts[] =
 	{
@@ -3546,10 +3555,11 @@ parse_program_arguments (struct app_context *ctx, int argc, char **argv,
 		{ 'n', "null-as-id", NULL, 0, "JSON null is used as an `id'" },
 		{ 'o', "origin", "O", 0, "set the HTTP Origin header" },
 		// So far you have to explicitly enable this rather than disable
-		{ 'O', "openrpc", NULL, 0, "method name completion using OpenRPC" },
+		{ 'O', "openrpc", "PATH", OPT_OPTIONAL_ARG,
+		  "method name completion using OpenRPC" },
 		{ 't', "trust-all", NULL, 0, "don't care about SSL/TLS certificates" },
 		{ 'v', "verbose", NULL, 0, "print raw requests and responses" },
-		{ 'w', "write-default-cfg", "FILENAME",
+		{ 'w', "write-default-cfg", "PATH",
 		  OPT_OPTIONAL_ARG | OPT_LONG_ONLY,
 		  "write a default configuration file and exit" },
 		{ 'd', "debug", NULL, 0, "run in debug mode" },
@@ -3575,8 +3585,9 @@ parse_program_arguments (struct app_context *ctx, int argc, char **argv,
 		printf (PROGRAM_NAME " " PROGRAM_VERSION "\n");
 		exit (EXIT_SUCCESS);
 
-	case 'o': *origin = optarg;         break;
+	case 'o': *origin  = optarg;               break;
-	case 'O': ctx->openrpc      = true; break;
+	case 'O': *openrpc = optarg ? optarg : ""; break;
+
 	case 'n': ctx->null_as_id   = true; break;
 	case 'c': ctx->compact      = true; break;
 	case 't': ctx->trust_all    = true; break;
@@ -3657,8 +3668,8 @@ main (int argc, char *argv[])
 	register_config_modules (&g_ctx);
 	config_load (&g_ctx.config, config_item_object ());
 
-	const char *origin = NULL, *endpoint = NULL;
+	const char *origin = NULL, *endpoint = NULL, *openrpc = NULL;
-	parse_program_arguments (&g_ctx, argc, argv, &origin, &endpoint);
+	parse_program_arguments (&g_ctx, argc, argv, &origin, &endpoint, &openrpc);
 
 	g_ctx.input = input_new ();
 	g_ctx.input->user_data = &g_ctx;
@@ -3719,7 +3730,7 @@ main (int argc, char *argv[])
 	g_ctx.input->vtable->start (g_ctx.input, PROGRAM_NAME);
 
 	ev_set_userdata (EV_DEFAULT_ &g_ctx);
-	init_openrpc (&g_ctx);
+	init_openrpc (&g_ctx, openrpc);
 	ev_run (EV_DEFAULT_ 0);
 
 	// User has terminated the program, let's save the history and clean up

liberty

@@ -1 +1 @@
-Subproject commit e029aae1d3d1884ca868c3694bdec0456b3e8267
+Subproject commit 69101eb1554ad2fca6de30cdbaccac076210d7e3