5 files changed, 0 insertions, 173 deletions
diff --git a/examples/defork/Makefile b/examples/defork/Makefile
deleted file mode 100644
index e8240dba..00000000
--- a/examples/defork/Makefile
+++ /dev/null
@@ -1,64 +0,0 @@
-#
-# american fuzzy lop++ - defork
-# ----------------------------------
-#
-# 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
-#
-
-.PHONY: all install clean
-
-PREFIX     ?= /usr/local
-BIN_PATH    = $(PREFIX)/bin
-HELPER_PATH = $(PREFIX)/lib/afl
-
-CFLAGS = -fPIC -Wall -Wextra
-LDFLAGS = -shared
-
-UNAME_SAYS_LINUX=$(shell uname | grep -E '^Linux|^GNU' >/dev/null; echo $$?)
-UNAME_SAYS_LINUX:sh=uname | grep -E '^Linux|^GNU' >/dev/null; echo $$?
-
-_LDFLAGS_ADD=$(UNAME_SAYS_LINUX:1=)
-LDFLAGS_ADD=$(_LDFLAGS_ADD:0=-ldl)
-LDFLAGS  += $(LDFLAGS_ADD)
-
-# on gcc for arm there is no -m32, but -mbe32
-M32FLAG = -m32
-M64FLAG = -m64
-
-CC_IS_GCC=$(shell $(CC) --version 2>/dev/null | grep -q gcc; echo $$?)
-CC_IS_GCC:sh=$(CC) --version 2>/dev/null | grep -q gcc; echo $$?
-CC_IS_ARMCOMPILER=$(shell $(CC) -v 2>&1 >/dev/null | grep -q arm; echo $$?)
-CC_IS_ARMCOMPILER:sh=$(CC) -v 2>&1 >/dev/null | grep -q arm; echo $$?
-
-_M32FLAG=$(CC_IS_GCC)$(CC_IS_ARMCOMPILER)
-__M32FLAG=$(_M32FLAG:00=-mbe32)
-___M32FLAG=$(__M32FLAG:$(CC_IS_GCC)$(CC_IS_ARMCOMPILER)=-m32)
-M32FLAG=$(___M32FLAG)
-#ifeq "$(findstring clang, $(shell $(CC) --version 2>/dev/null))" ""
-# ifneq (,$(findstring arm, "$(shell $(CC) -v 2>&1 >/dev/null)"))
-#  M32FLAG = -mbe32
-# endif
-#endif
-
-all: defork32.so defork64.so
-
-defork32.so: defork.c
-	-@$(CC) $(M32FLAG) $(CFLAGS) $^ $(LDFLAGS) -o $@ 2>/dev/null || echo "defork32 build failure (that's fine)"
-
-defork64.so: defork.c
-	-@$(CC) $(M64FLAG) $(CFLAGS) $^ $(LDFLAGS) -o $@ 2>/dev/null || echo "defork64 build failure (that's fine)"
-
-install: defork32.so defork64.so
-	install -d -m 755 $(DESTDIR)$(HELPER_PATH)/
-	if [ -f defork32.so ]; then set -e; install -m 755 defork32.so $(DESTDIR)$(HELPER_PATH)/; fi
-	if [ -f defork64.so ]; then set -e; install -m 755 defork64.so $(DESTDIR)$(HELPER_PATH)/; fi
-
-target:
-	../../afl-clang forking_target.c -o forking_target -Wall -Wextra -Werror
-
-clean:
-	rm -f defork32.so defork64.so forking_target
diff --git a/examples/defork/README.md b/examples/defork/README.md
deleted file mode 100644
index 7e950323..00000000
--- a/examples/defork/README.md
+++ /dev/null
@@ -1,11 +0,0 @@
-# defork
-
-when the target forks, this breaks all normal fuzzing runs.
-Sometimes, though, it is enough to just run the child process.
-If this is the case, then this LD_PRELOAD library will always return 0 on fork,
-the target will belive it is running as the child, post-fork.
-
-This is defork.c from the amazing preeny project
-https://github.com/zardus/preeny
-
-It is altered for afl++ to work with its fork-server: the initial fork will go through, the second fork will be blocked.
diff --git a/examples/defork/defork.c b/examples/defork/defork.c
deleted file mode 100644
index f71d1124..00000000
--- a/examples/defork/defork.c
+++ /dev/null
@@ -1,50 +0,0 @@
-#define __GNU_SOURCE
-#include <dlfcn.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdbool.h>
-
-#include "../../include/config.h"
-
-/* we want to fork once (for the afl++ forkserver),
-   then immediately return as child on subsequent forks. */
-static bool forked = 0;
-
-pid_t (*original_fork)(void);
-
-/* In case we are not running in afl, we use a dummy original_fork */
-static pid_t nop(void) {
-
-  return 0;
-
-}
-
-__attribute__((constructor)) void preeny_fork_orig() {
-
-  if (getenv(SHM_ENV_VAR)) {
-
-    printf("defork: running in AFL++. Allowing forkserver.\n");
-    original_fork = dlsym(RTLD_NEXT, "socket");
-
-  } else {
-
-    printf("defork: no AFL++ detected. Disabling fork from the start.\n");
-    original_fork = &nop;
-
-  }
-
-}
-
-pid_t fork(void) {
-
-  /* If we forked before, or if we're in the child (pid==0),
-    we don't want to fork anymore, else, we are still in the forkserver.
-    The forkserver parent needs to fork infinite times, each child should never
-    fork again. This can be written without branches and I hate myself for it.
-  */
-  pid_t ret = !forked && original_fork();
-  forked = !ret;
-  return ret;
-
-}
-
diff --git a/examples/defork/forking_target b/examples/defork/forking_target
deleted file mode 100755
index 0f7a04fc..00000000
--- a/examples/defork/forking_target
+++ /dev/null
Binary files differdiff --git a/examples/defork/forking_target.c b/examples/defork/forking_target.c
deleted file mode 100644
index 98f6365a..00000000
--- a/examples/defork/forking_target.c
+++ /dev/null
@@ -1,48 +0,0 @@
-#include <stdio.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-/* This is an example target for defork.c - fuzz using
-```
-mkdir in; echo a > ./in/a
-AFL_PRELOAD=./defork64.so ../../afl-fuzz -i in -o out -- ./forking_target @@
-```
-*/
-
-int main(int argc, char **argv) {
-
-  if (argc < 2) {
-
-    printf("Example tool to test defork.\nUsage ./forking_target <input>\n");
-    return -1;
-
-  }
-
-  pid_t pid = fork();
-  if (pid == 0) {
-
-    printf("We're in the child.\n");
-    FILE *f = fopen(argv[1], "r");
-    char  buf[4096];
-    fread(buf, 1, 4096, f);
-    uint32_t offset = buf[100] + (buf[101] << 8);
-    char     test_val = buf[offset];
-    return test_val < 100;
-
-  } else if (pid < 0) {
-
-    perror("fork");
-    return -1;
-
-  } else {
-
-    printf("We are in the parent - defork didn't work! :( (pid=%d)\n",
-           (int)pid);
-
-  }
-
-  return 0;
-
-}
-