#include "fuzz.h" #include "session.h" #include "fuzz-wrapfd.h" #include "debug.h" static void setup_fuzzer(void) { common_setup_fuzzer(); } static buffer *verifydata; /* Tests reading a public key and verifying a signature */ int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { static int once = 0; if (!once) { setup_fuzzer(); verifydata = buf_new(30); buf_putstring(verifydata, "x", 1); once = 1; } if (fuzzer_set_input(Data, Size) == DROPBEAR_FAILURE) { return 0; } m_malloc_set_epoch(1); if (setjmp(fuzz.jmp) == 0) { sign_key *key = new_sign_key(); enum signkey_type type = DROPBEAR_SIGNKEY_ANY; if (buf_get_pub_key(fuzz.input, key, &type) == DROPBEAR_SUCCESS) { /* Don't expect random fuzz input to verify */ assert(buf_verify(fuzz.input, key, verifydata) == DROPBEAR_FAILURE); } sign_key_free(key); m_malloc_free_epoch(1, 0); } else { m_malloc_free_epoch(1, 1); TRACE(("dropbear_exit longjmped")) // dropbear_exit jumped here } return 0; }