1 files changed, 57 insertions, 7 deletions

diff --git a/src/afl-fuzz.c b/src/afl-fuzz.c
index d70ffd31..23343ade 100644
--- a/src/afl-fuzz.c
+++ b/src/afl-fuzz.c
@@ -222,6 +222,9 @@ static void usage(u8 *argv0, int more_help) {
       "AFL_PATH: path to AFL support binaries\n"
       "AFL_PYTHON_MODULE: mutate and trim inputs with the specified Python module\n"
       "AFL_QUIET: suppress forkserver status messages\n"
+#ifdef AFL_PERSISTENT_RECORD
+      "AFL_PERSISTENT_RECORD: record the last X inputs to every crash in out/crashes\n"
+#endif
       "AFL_PRELOAD: LD_PRELOAD / DYLD_INSERT_LIBRARIES settings for target\n"
       "AFL_TARGET_ENV: pass extra environment variables to target\n"
       "AFL_SHUFFLE_QUEUE: reorder the input queue randomly on startup\n"
@@ -253,7 +256,13 @@ static void usage(u8 *argv0, int more_help) {
   SAYF("Compiled with %s module support, see docs/custom_mutator.md\n",
        (char *)PYTHON_VERSION);
 #else
-  SAYF("Compiled without python module support\n");
+  SAYF("Compiled without python module support.\n");
+#endif
+
+#ifdef AFL_PERSISTENT_RECORD
+  SAYF("Compiled with AFL_PERSISTENT_RECORD support.\n");
+#else
+  SAYF("Compiled without AFL_PERSISTENT_RECORD support.\n");
 #endif
 
 #ifdef USEMMAP
@@ -263,27 +272,27 @@ static void usage(u8 *argv0, int more_help) {
 #endif
 
 #ifdef ASAN_BUILD
-  SAYF("Compiled with ASAN_BUILD\n\n");
+  SAYF("Compiled with ASAN_BUILD.\n");
 #endif
 
 #ifdef NO_SPLICING
-  SAYF("Compiled with NO_SPLICING\n\n");
+  SAYF("Compiled with NO_SPLICING.\n");
 #endif
 
 #ifdef PROFILING
-  SAYF("Compiled with PROFILING\n\n");
+  SAYF("Compiled with PROFILING.\n");
 #endif
 
 #ifdef INTROSPECTION
-  SAYF("Compiled with INTROSPECTION\n\n");
+  SAYF("Compiled with INTROSPECTION.\n");
 #endif
 
 #ifdef _DEBUG
-  SAYF("Compiled with _DEBUG\n\n");
+  SAYF("Compiled with _DEBUG.\n");
 #endif
 
 #ifdef _AFL_DOCUMENT_MUTATIONS
-  SAYF("Compiled with _AFL_DOCUMENT_MUTATIONS\n\n");
+  SAYF("Compiled with _AFL_DOCUMENT_MUTATIONS.\n");
 #endif
 
   SAYF("For additional help please consult %s/README.md :)\n\n", doc_path);
@@ -1023,6 +1032,30 @@ int main(int argc, char **argv_orig, char **envp) {
 
   }
 
+  if (unlikely(afl->afl_env.afl_persistent_record)) {
+
+  #ifdef AFL_PERSISTENT_RECORD
+
+    afl->fsrv.persistent_record = atoi(afl->afl_env.afl_persistent_record);
+
+    if (afl->fsrv.persistent_record < 2) {
+
+      FATAL(
+          "AFL_PERSISTENT_RECORD value must be be at least 2, recommended is "
+          "100 or 1000.");
+
+    }
+
+  #else
+
+    FATAL(
+        "afl-fuzz was not compiled with AFL_PERSISTENT_RECORD enabled in "
+        "config.h!");
+
+  #endif
+
+  }
+
   if (afl->fsrv.mem_limit && afl->shm.cmplog_mode) afl->fsrv.mem_limit += 260;
 
   OKF("afl++ is maintained by Marc \"van Hauser\" Heuse, Heiko \"hexcoder\" "
@@ -1489,6 +1522,23 @@ int main(int argc, char **argv_orig, char **envp) {
 
   check_binary(afl, argv[optind]);
 
+  #ifdef AFL_PERSISTENT_RECORD
+  if (unlikely(afl->fsrv.persistent_record)) {
+
+    if (!getenv(PERSIST_ENV_VAR)) {
+
+      FATAL(
+          "Target binary is not compiled in persistent mode, "
+          "AFL_PERSISTENT_RECORD makes no sense.");
+
+    }
+
+    afl->fsrv.persistent_record_dir = alloc_printf("%s/crashes", afl->out_dir);
+
+  }
+
+  #endif
+
   if (afl->shmem_testcase_mode) { setup_testcase_shmem(afl); }
 
   afl->start_time = get_cur_time();