Implement fixedlength framing

1 files changed, 36 insertions, 0 deletions

diff --git a/plugins/framing_fixedlength.c b/plugins/framing_fixedlength.c
new file mode 100644
index 0000000..1a66df4
--- /dev/null
+++ b/plugins/framing_fixedlength.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+
+#include "../websocksy.h"
+
+static int64_t framing_fixedlen(uint8_t* data, size_t length, size_t last_read, ws_operation* opcode, void** framing_data, const char* config){
+	size_t* frame_size = framing_data ? (size_t*) (*framing_data) : NULL;
+
+	if(data && !frame_size){
+		frame_size = calloc(1, sizeof(size_t));
+		if(!frame_size){
+			fprintf(stderr, "Failed to allocate memory\n");
+			return -1;
+		}
+
+		*frame_size = strtoul(config, NULL, 0);
+		*framing_data = frame_size;
+	}
+	else if(!data && frame_size){
+		free(*framing_data);
+		*framing_data = NULL;
+	}
+
+	if(!(*frame_size)){
+		return length;
+	}
+
+	if(length >= *frame_size){
+		return *frame_size;
+	}
+
+	return 0;
+}
+
+static void __attribute__((constructor)) init(){
+	core_register_framing("fixedlength", framing_fixedlen);
+}