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sync afl-fast-gcc with afl-clang-fast, add tests for gcc_plugin

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This commit is contained in:
hexcoder-
2019-10-18 19:53:10 +02:00
parent b1822f2602
commit e7ab8be0cd
5 changed files with 108 additions and 21 deletions
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50
gcc_plugin/afl-gcc-fast.c
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@ -104,7 +104,7 @@ static void edit_params(u32 argc, char** argv) {
cc_params = ck_alloc((argc + 64) * sizeof(u8*));
name = strrchr(argv[0], '/');
if (!name) name = argv[0]; else name++;
if (!name) name = argv[0]; else ++name;
if (!strcmp(name, "afl-g++-fast")) {
u8* alt_cxx = getenv("AFL_CXX");
@ -114,9 +114,15 @@ static void edit_params(u32 argc, char** argv) {
cc_params[0] = alt_cc ? alt_cc : (u8*)"gcc";
}
char* fplugin_arg = alloc_printf("-fplugin=%s/afl-gcc-pass.so", obj_path);
cc_params[cc_par_cnt++] = fplugin_arg;
/* Detect stray -v calls from ./configure scripts. */
if (argc == 1 && !strcmp(argv[1], "-v")) maybe_linking = 0;
while (--argc) {
u8* cur = *(++argv);
@ -134,6 +140,8 @@ static void edit_params(u32 argc, char** argv) {
if (strstr(cur, "FORTIFY_SOURCE")) fortify_set = 1;
if (!strcmp(cur, "-shared")) maybe_linking = 0;
cc_params[cc_par_cnt++] = cur;
}
@ -151,17 +159,23 @@ static void edit_params(u32 argc, char** argv) {
if (getenv("AFL_USE_ASAN")) {
cc_params[cc_par_cnt++] = "-fsanitize=address";
if (getenv("AFL_USE_MSAN")) FATAL("ASAN and MSAN are mutually exclusive");
if (getenv("AFL_USE_MSAN"))
FATAL("ASAN and MSAN are mutually exclusive");
if (getenv("AFL_HARDEN"))
FATAL("ASAN and AFL_HARDEN are mutually exclusive");
cc_params[cc_par_cnt++] = "-U_FORTIFY_SOURCE";
cc_params[cc_par_cnt++] = "-fsanitize=address";
} else if (getenv("AFL_USE_MSAN")) {
cc_params[cc_par_cnt++] = "-fsanitize=memory";
if (getenv("AFL_USE_ASAN")) FATAL("ASAN and MSAN are mutually exclusive");
if (getenv("AFL_USE_ASAN"))
FATAL("ASAN and MSAN are mutually exclusive");
if (getenv("AFL_HARDEN"))
FATAL("MSAN and AFL_HARDEN are mutually exclusive");
cc_params[cc_par_cnt++] = "-U_FORTIFY_SOURCE";
cc_params[cc_par_cnt++] = "-fsanitize=memory";
}
@ -175,7 +189,13 @@ static void edit_params(u32 argc, char** argv) {
}
#ifdef USEMMAP
cc_params[cc_par_cnt++] = "-lrt";
#endif
cc_params[cc_par_cnt++] = "-D__AFL_HAVE_MANUAL_CONTROL=1";
cc_params[cc_par_cnt++] = "-D__AFL_COMPILER=1";
cc_params[cc_par_cnt++] = "-DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION=1";
/* When the user tries to use persistent or deferred forkserver modes by
appending a single line to the program, we want to reliably inject a
@ -237,15 +257,10 @@ static void edit_params(u32 argc, char** argv) {
int main(int argc, char** argv) {
if (isatty(2) && !getenv("AFL_QUIET")) {
if (argc < 2 || strcmp(argv[1], "-h") == 0) {
SAYF(cCYA "afl-gcc-fast " cBRI VERSION cRST " initially by <aseipp@pobox.com>, maintainer: hexcoder-\n");
}
if (argc < 2) {
SAYF("\n"
printf(cCYA "afl-gcc-fast" VERSION cRST " initially by <aseipp@pobox.com>, maintainer: hexcoder-\n"
"\n"
"This is a helper application for afl-fuzz. It serves as a drop-in replacement\n"
"for gcc, letting you recompile third-party code with the required runtime\n"
"instrumentation. A common use pattern would be one of the following:\n\n"
@ -263,8 +278,11 @@ int main(int argc, char** argv) {
exit(1);
}
} else if (isatty(2) && !getenv("AFL_QUIET")) {
SAYF(cCYA "afl-gcc-fast" VERSION cRST " initially by <aseipp@pobox.com>, maintainer: hexcoder-\n");
}
find_obj(argv[0]);