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Diffstat (limited to 'examples/persistent_mode/persistent_demo.c')
-rw-r--r-- | examples/persistent_mode/persistent_demo.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/examples/persistent_mode/persistent_demo.c b/examples/persistent_mode/persistent_demo.c deleted file mode 100644 index 4cedc32c..00000000 --- a/examples/persistent_mode/persistent_demo.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - american fuzzy lop++ - persistent mode example - -------------------------------------------- - - Originally written by Michal Zalewski - - Copyright 2015 Google Inc. All rights reserved. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at: - - http://www.apache.org/licenses/LICENSE-2.0 - - This file demonstrates the high-performance "persistent mode" that may be - suitable for fuzzing certain fast and well-behaved libraries, provided that - they are stateless or that their internal state can be easily reset - across runs. - - To make this work, the library and this shim need to be compiled in LLVM - mode using afl-clang-fast (other compiler wrappers will *not* work). - - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <signal.h> -#include <string.h> - -/* Main entry point. */ - -int main(int argc, char **argv) { - - ssize_t len; /* how much input did we read? */ - char buf[100]; /* Example-only buffer, you'd replace it with other global or - local variables appropriate for your use case. */ - - /* The number passed to __AFL_LOOP() controls the maximum number of - iterations before the loop exits and the program is allowed to - terminate normally. This limits the impact of accidental memory leaks - and similar hiccups. */ - - __AFL_INIT(); - while (__AFL_LOOP(1000)) { - - /*** PLACEHOLDER CODE ***/ - - /* STEP 1: Fully re-initialize all critical variables. In our example, this - involves zeroing buf[], our input buffer. */ - - memset(buf, 0, 100); - - /* STEP 2: Read input data. When reading from stdin, no special preparation - is required. When reading from a named file, you need to close - the old descriptor and reopen the file first! - - Beware of reading from buffered FILE* objects such as stdin. Use - raw file descriptors or call fopen() / fdopen() in every pass. */ - - len = read(0, buf, 100); - - /* STEP 3: This is where we'd call the tested library on the read data. - We just have some trivial inline code that faults on 'foo!'. */ - - /* do we have enough data? */ - if (len < 8) continue; - - if (buf[0] == 'f') { - - printf("one\n"); - if (buf[1] == 'o') { - - printf("two\n"); - if (buf[2] == 'o') { - - printf("three\n"); - if (buf[3] == '!') { - - printf("four\n"); - if (buf[4] == '!') { - - printf("five\n"); - if (buf[5] == '!') { - - printf("six\n"); - abort(); - - } - - } - - } - - } - - } - - } - - /*** END PLACEHOLDER CODE ***/ - - } - - /* Once the loop is exited, terminate normally - AFL will restart the process - when this happens, with a clean slate when it comes to allocated memory, - leftover file descriptors, etc. */ - - return 0; - -} - |