ARI: Add the ability to download the media associated with a stored recording

This patch adds a new feature to ARI that allows a client to download
the media associated with a stored recording. The new route is
/recordings/stored/{name}/file, and transmits the underlying binary file
using Asterisk's HTTP server's underlying file transfer facilities.

Because this REST route returns non-JSON, a few small enhancements had
to be made to the Python Swagger generation code, as well as the
mustache templates that generate the ARI bindings.

ASTERISK-26042 #close

Change-Id: I49ec5c4afdec30bb665d9c977ab423b5387e0181

1 files changed, 70 insertions, 2 deletions

diff --git a/res/res_ari_recordings.c b/res/res_ari_recordings.c
index df4a124be..abc264d9e 100644
--- a/res/res_ari_recordings.c
+++ b/res/res_ari_recordings.c
@@ -221,6 +221,65 @@ static void ast_ari_recordings_delete_stored_cb(
 fin: __attribute__((unused))
 	return;
 }
+/*!
+ * \brief Parameter parsing callback for /recordings/stored/{recordingName}/file.
+ * \param get_params GET parameters in the HTTP request.
+ * \param path_vars Path variables extracted from the request.
+ * \param headers HTTP headers.
+ * \param[out] response Response to the HTTP request.
+ */
+static void ast_ari_recordings_get_stored_file_cb(
+	struct ast_tcptls_session_instance *ser,
+	struct ast_variable *get_params, struct ast_variable *path_vars,
+	struct ast_variable *headers, struct ast_ari_response *response)
+{
+	struct ast_ari_recordings_get_stored_file_args args = {};
+	struct ast_variable *i;
+	RAII_VAR(struct ast_json *, body, NULL, ast_json_unref);
+#if defined(AST_DEVMODE)
+	int is_valid;
+	int code;
+#endif /* AST_DEVMODE */
+
+	for (i = path_vars; i; i = i->next) {
+		if (strcmp(i->name, "recordingName") == 0) {
+			args.recording_name = (i->value);
+		} else
+		{}
+	}
+	ast_ari_recordings_get_stored_file(ser, headers, &args, response);
+#if defined(AST_DEVMODE)
+	code = response->response_code;
+
+	switch (code) {
+	case 0: /* Implementation is still a stub, or the code wasn't set */
+		is_valid = response->message == NULL;
+		break;
+	case 500: /* Internal Server Error */
+	case 501: /* Not Implemented */
+	case 404: /* Recording not found */
+		is_valid = 1;
+		break;
+	default:
+		if (200 <= code && code <= 299) {
+			/* No validation on a raw binary response */
+			is_valid = 1;
+		} else {
+			ast_log(LOG_ERROR, "Invalid error response %d for /recordings/stored/{recordingName}/file\n", code);
+			is_valid = 0;
+		}
+	}
+
+	if (!is_valid) {
+		ast_log(LOG_ERROR, "Response validation failed for /recordings/stored/{recordingName}/file\n");
+		ast_ari_response_error(response, 500,
+			"Internal Server Error", "Response validation failed");
+	}
+#endif /* AST_DEVMODE */
+
+fin: __attribute__((unused))
+	return;
+}
 int ast_ari_recordings_copy_stored_parse_body(
 	struct ast_json *body,
 	struct ast_ari_recordings_copy_stored_args *args)
@@ -738,6 +797,15 @@ fin: __attribute__((unused))
 }
 
 /*! \brief REST handler for /api-docs/recordings.{format} */
+static struct stasis_rest_handlers recordings_stored_recordingName_file = {
+	.path_segment = "file",
+	.callbacks = {
+		[AST_HTTP_GET] = ast_ari_recordings_get_stored_file_cb,
+	},
+	.num_children = 0,
+	.children = {  }
+};
+/*! \brief REST handler for /api-docs/recordings.{format} */
 static struct stasis_rest_handlers recordings_stored_recordingName_copy = {
 	.path_segment = "copy",
 	.callbacks = {
@@ -754,8 +822,8 @@ static struct stasis_rest_handlers recordings_stored_recordingName = {
 		[AST_HTTP_GET] = ast_ari_recordings_get_stored_cb,
 		[AST_HTTP_DELETE] = ast_ari_recordings_delete_stored_cb,
 	},
-	.num_children = 1,
-	.children = { &recordings_stored_recordingName_copy, }
+	.num_children = 2,
+	.children = { &recordings_stored_recordingName_file,&recordings_stored_recordingName_copy, }
 };
 /*! \brief REST handler for /api-docs/recordings.{format} */
 static struct stasis_rest_handlers recordings_stored = {