--- a/fuzzer-preauth.c	Tue Jan 23 22:46:07 2018 +0800
+++ b/fuzzer-preauth.c	Tue Jan 23 23:05:47 2018 +0800
@@ -1,53 +1,6 @@
 #include "fuzz.h"
-#include "session.h"
-#include "fuzz-wrapfd.h"
-#include "debug.h"
-
-static void setup_fuzzer(void) {
-	svr_setup_fuzzer();
-	//debug_trace = 1;
-}
 
 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
-	static int once = 0;
-	if (!once) {
-		setup_fuzzer();
-		once = 1;
-	}
-
-	if (fuzzer_set_input(Data, Size) == DROPBEAR_FAILURE) {
-		return 0;
-	}
-
-	// get prefix. input format is
-	// string prefix
-	//     uint32 wrapfd seed
-	//     ... to be extended later
-	// [bytes] ssh input stream
+	return fuzz_run_preauth(Data, Size, 0);
+}
 
-	// be careful to avoid triggering buffer.c assertions
-	if (fuzz.input->len < 8) {
-		return 0;
-	}
-	size_t prefix_size = buf_getint(fuzz.input);
-	if (prefix_size != 4) {
-		return 0;
-	}
-	uint32_t wrapseed = buf_getint(fuzz.input);
-	wrapfd_setseed(wrapseed);
-
-	int fakesock = 20;
-	wrapfd_add(fakesock, fuzz.input, PLAIN);
-
-	m_malloc_set_epoch(1);
-	if (setjmp(fuzz.jmp) == 0) {
-		svr_session(fakesock, fakesock);
-		m_malloc_free_epoch(1, 0);
-	} else {
-		m_malloc_free_epoch(1, 1);
-		TRACE(("dropbear_exit longjmped"))
-		// dropbear_exit jumped here
-	}
-
-	return 0;
-}