MT#55283 support blob64

Change-Id: I18246c941f96761be5134538d0a7032b24b12e84

daemon/call_flags.c

@@ -1492,6 +1492,9 @@ const char *call_ng_main_flags(const ng_parser_t *parser, str *key, parser_arg v
 		case CSH_LOOKUP("blob"):
 			out->blob = s;
 			break;
+		case CSH_LOOKUP("blob64"):
+			out->blob64 = s;
+			break;
 		case CSH_LOOKUP("bundle"):
 		case CSH_LOOKUP("BUNDLE"):
 			return call_ng_flags_str_list(parser, value, call_ng_flags_bundle, out);

daemon/call_interfaces.c

@@ -1905,6 +1905,17 @@ const char *call_play_media_ng(ng_command_ctx_t *ctx) {
 	if (err)
 		return err;
 
+	g_autoptr(char) b64dec = NULL;
+
+	if (flags.blob64.len && !flags.blob.len) {
+		b64dec = g_malloc(flags.blob64.len * 3 / 4 + 3);
+		gint state = 0;
+		guint save = 0;
+		size_t out = g_base64_decode_step(flags.blob64.s, flags.blob64.len, (guchar *) b64dec, &state, &save);
+
+		flags.blob = STR_LEN(b64dec, out);
+	}
+
 	for (__auto_type l = monologues.head; l; l = l->next) {
 		struct call_monologue *monologue = l->data;
 

docs/ng_control_protocol.md

@@ -2289,6 +2289,12 @@ Media files can be provided through one of these keys:
 	*ng* transport protocol, only very short files can be provided this way, and so this is primarily
 	useful for testing and debugging.
 
+* `blob64`
+
+    Alternative to `blob` which expects a binary media file in base64 encoding.
+    This is useful for transports which don't natively support binary data
+    (e.g. JSON).
+
 * `db-id`
 
 	Contains an integer. This requires the daemon to be configured for accessing a *MySQL* (or *MariaDB*)

include/call_flags.h

@@ -178,6 +178,7 @@ struct sdp_ng_flags {
 	str file;
 	str moh_file;
 	str blob;
+	str blob64;
 	str moh_blob;
 	long long db_id;
 	long long moh_db_id;