1 files changed, 142 insertions, 0 deletions
diff --git a/fuzz/wget_progress_fuzzer.c b/fuzz/wget_progress_fuzzer.c
new file mode 100644
index 0000000..d3fd06c
--- /dev/null
+++ b/fuzz/wget_progress_fuzzer.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2017-2019, 2021-2023 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 "wget.h"
+
+#undef fopen_wgetrc
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+  #include "progress.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
+
+
+#define NAMEPOS (2 * sizeof(wgint) + sizeof(double))
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	void *progress;
+
+	if (size > 4096) // same as max_len = ... in .options file
+		return 0;
+
+	if (size < NAMEPOS)
+		return 0;
+
+//	CLOSE_STDERR
+
+	wgint start = ((wgint *) data)[0];
+	wgint end = ((wgint *) data)[1];
+	double dltime = ((wgint *) data)[2];
+
+	if (start < 0 || end < 0)
+		return 0;
+
+	if (start > end) {
+		wgint x = start;
+		start = end;
+		end = x;
+	}
+
+//	double dltime = ((double *) (data + 2 * sizeof(wgint)))[0];
+
+	char *filename = strndup((char *) (data + NAMEPOS), size - NAMEPOS);
+
+//	printf("%ld %ld %lf %s\n", start, end, dltime, filename);
+
+	set_progress_implementation("bar:force"); // [:force][:noscroll]
+
+	progress = progress_create (filename, start, end);
+	progress_update (progress, 0, dltime);
+	progress_update (progress, end - start, dltime);
+	progress_finish (progress, dltime);
+
+	set_progress_implementation("dot:default");// [:default|:binary|:mega|:giga]
+	progress = progress_create (filename, start, end);
+	progress_update (progress, 0, dltime);
+	progress_update (progress, end - start, dltime);
+	progress_finish (progress, dltime);
+
+	set_progress_implementation("dot:binary");// [:default|:binary|:mega|:giga]
+	progress = progress_create (filename, start, end);
+	progress_update (progress, 0, dltime);
+	progress_update (progress, end - start, dltime);
+	progress_finish (progress, dltime);
+
+	set_progress_implementation("dot:mega");// [:default|:binary|:mega|:giga]
+	progress = progress_create (filename, start, end);
+	progress_update (progress, 0, dltime);
+	progress_update (progress, end - start, dltime);
+	progress_finish (progress, dltime);
+
+	set_progress_implementation("dot:giga");// [:default|:binary|:mega|:giga]
+	progress = progress_create (filename, start, end);
+	progress_update (progress, 0, dltime);
+	progress_update (progress, end - start, dltime);
+	progress_finish (progress, dltime);
+
+	free(filename);
+
+//	RESTORE_STDERR
+
+	return 0;
+}