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-rw-r--r--fuzz/wget_ntlm_fuzzer.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/fuzz/wget_ntlm_fuzzer.c b/fuzz/wget_ntlm_fuzzer.c
new file mode 100644
index 0000000..39088fb
--- /dev/null
+++ b/fuzz/wget_ntlm_fuzzer.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2017-2019 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Wget.
+ *
+ * GNU Wget is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GNU Wget is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Wget. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <dirent.h> // opendir, readdir
+#include <stdint.h> // uint8_t
+#include <stdio.h> // fmemopen
+#include <string.h> // strncmp
+#include <stdlib.h> // free
+#include <fcntl.h> // open flags
+#include <unistd.h> // close
+#include <setjmp.h> // longjmp, setjmp
+#include <assert.h> // assert
+
+#include "wget.h"
+
+#undef fopen_wgetrc
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+ #include "http-ntlm.h"
+
+ // declarations for wget internal functions
+ int main_wget(int argc, const char **argv);
+ void cleanup(void);
+ FILE *fopen_wget(const char *pathname, const char *mode);
+ FILE *fopen_wgetrc(const char *pathname, const char *mode);
+ void exit_wget(int status);
+#ifdef __cplusplus
+ }
+#endif
+
+#include "fuzzer.h"
+
+FILE *fopen_wget(const char *pathname, const char *mode)
+{
+ (void) pathname;
+ return fopen("/dev/null", mode);
+}
+
+FILE *fopen_wgetrc(const char *pathname, const char *mode)
+{
+ (void) pathname;
+ (void) mode;
+ return NULL;
+}
+
+#ifdef FUZZING
+void exit_wget(int status)
+{
+ (void) status;
+}
+#endif
+
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+ if (size > 128) // same as max_len = ... in .options file
+ return 0;
+
+ // CLOSE_STDERR
+
+ struct ntlmdata *ntlm = calloc(1, sizeof(struct ntlmdata));
+ char *data0 = malloc(size + 4 + 1);
+ char *val;
+ bool ready;
+
+ assert(ntlm && data0);
+
+ memcpy(data0, "NTLM", 4);
+ memcpy(data0 + 4, data, size);
+ data0[size + 4] = 0;
+
+ if (ntlm_input(ntlm, data0))
+ free(ntlm_output(ntlm, data0 + 4, data0 + 4, &ready));
+
+ free(data0);
+ free(ntlm);
+
+// RESTORE_STDERR
+
+ return 0;
+}