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extract function afl_fsrv_setup_preload

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Kuang-che Wu
2025-05-23 10:39:03 +08:00
parent d02390e62e
commit 55d534cd6d
5 changed files with 65 additions and 166 deletions
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1
include/forkserver.h
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@ -242,6 +242,7 @@ typedef enum fsrv_run_result {
void afl_fsrv_init(afl_forkserver_t *fsrv); void afl_fsrv_init(afl_forkserver_t *fsrv);
void afl_fsrv_init_dup(afl_forkserver_t *fsrv_to, afl_forkserver_t *from); void afl_fsrv_init_dup(afl_forkserver_t *fsrv_to, afl_forkserver_t *from);
void afl_fsrv_setup_preload(afl_forkserver_t *fsrv, char *argv0);
void afl_fsrv_start(afl_forkserver_t *fsrv, char **argv, void afl_fsrv_start(afl_forkserver_t *fsrv, char **argv,
volatile u8 *stop_soon_p, u8 debug_child_output); volatile u8 *stop_soon_p, u8 debug_child_output);
u32 afl_fsrv_get_mapsize(afl_forkserver_t *fsrv, char **argv, u32 afl_fsrv_get_mapsize(afl_forkserver_t *fsrv, char **argv,

60
src/afl-analyze.c
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@ -75,7 +75,6 @@ static bool edges_only, /* Ignore hit counts? */
static volatile u8 stop_soon; /* Ctrl-C pressed? */ static volatile u8 stop_soon; /* Ctrl-C pressed? */
static u8 *target_path; static u8 *target_path;
static u8 frida_mode;
static u8 qemu_mode; static u8 qemu_mode;
static u8 cs_mode; static u8 cs_mode;
static u32 map_size = MAP_SIZE; static u32 map_size = MAP_SIZE;
@ -629,8 +628,6 @@ static void handle_stop_sig(int sig) {
static void set_up_environment(char **argv) { static void set_up_environment(char **argv) {
u8 *x; u8 *x;
char *afl_preload;
char *frida_afl_preload = NULL;
fsrv.dev_null_fd = open("/dev/null", O_RDWR); fsrv.dev_null_fd = open("/dev/null", O_RDWR);
if (fsrv.dev_null_fd < 0) { PFATAL("Unable to open /dev/null"); } if (fsrv.dev_null_fd < 0) { PFATAL("Unable to open /dev/null"); }
@ -672,57 +669,7 @@ static void set_up_environment(char **argv) {
} }
set_sanitizer_defaults(); set_sanitizer_defaults();
afl_fsrv_setup_preload(&fsrv, argv[0]);
if (get_afl_env("AFL_PRELOAD")) {
if (qemu_mode) {
/* afl-qemu-trace takes care of converting AFL_PRELOAD. */
} else if (frida_mode) {
afl_preload = getenv("AFL_PRELOAD");
u8 *frida_binary = find_afl_binary(argv[0], "afl-frida-trace.so");
if (afl_preload) {
frida_afl_preload = alloc_printf("%s:%s", afl_preload, frida_binary);
} else {
frida_afl_preload = alloc_printf("%s", frida_binary);
}
ck_free(frida_binary);
setenv("LD_PRELOAD", frida_afl_preload, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_afl_preload, 1);
#endif
} else {
/* CoreSight mode uses the default behavior. */
setenv("LD_PRELOAD", getenv("AFL_PRELOAD"), 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", getenv("AFL_PRELOAD"), 1);
#endif
}
} else if (frida_mode) {
u8 *frida_binary = find_afl_binary(argv[0], "afl-frida-trace.so");
setenv("LD_PRELOAD", frida_binary, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_binary, 1);
#endif
ck_free(frida_binary);
}
if (frida_afl_preload) { ck_free(frida_afl_preload); }
} }
@ -936,10 +883,9 @@ int main(int argc, char **argv_orig, char **envp) {
case 'O': /* FRIDA mode */ case 'O': /* FRIDA mode */
if (frida_mode) { FATAL("Multiple -O options not supported"); } if (fsrv.frida_mode) { FATAL("Multiple -O options not supported"); }
frida_mode = 1; fsrv.frida_mode = true;
fsrv.frida_mode = frida_mode;
setenv("AFL_FRIDA_INST_SEED", "1", 1); setenv("AFL_FRIDA_INST_SEED", "1", 1);
break; break;

57
src/afl-forkserver.c
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@ -320,6 +320,63 @@ void afl_fsrv_init_dup(afl_forkserver_t *fsrv_to, afl_forkserver_t *from) {
} }
void afl_fsrv_setup_preload(afl_forkserver_t *fsrv, char *argv0) {
char *afl_preload;
char *frida_afl_preload = NULL;
if (get_afl_env("AFL_PRELOAD")) {
if (fsrv->qemu_mode) {
/* afl-qemu-trace takes care of converting AFL_PRELOAD. */
} else if (fsrv->frida_mode) {
afl_preload = getenv("AFL_PRELOAD");
u8 *frida_binary = find_afl_binary(argv0, "afl-frida-trace.so");
if (afl_preload) {
frida_afl_preload = alloc_printf("%s:%s", afl_preload, frida_binary);
} else {
frida_afl_preload = alloc_printf("%s", frida_binary);
}
ck_free(frida_binary);
setenv("LD_PRELOAD", frida_afl_preload, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_afl_preload, 1);
#endif
} else {
/* CoreSight mode uses the default behavior. */
setenv("LD_PRELOAD", getenv("AFL_PRELOAD"), 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", getenv("AFL_PRELOAD"), 1);
#endif
}
} else if (fsrv->frida_mode) {
u8 *frida_binary = find_afl_binary(argv0, "afl-frida-trace.so");
setenv("LD_PRELOAD", frida_binary, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_binary, 1);
#endif
ck_free(frida_binary);
}
if (frida_afl_preload) { ck_free(frida_afl_preload); }
}
/* Wrapper for select() and read(), reading a 32 bit var. /* Wrapper for select() and read(), reading a 32 bit var.
Returns the time passed to read. Returns the time passed to read.
If the wait times out, returns timeout_ms + 1; If the wait times out, returns timeout_ms + 1;

55
src/afl-showmap.c
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@ -714,61 +714,8 @@ static void handle_stop_sig(int sig) {
static void set_up_environment(afl_forkserver_t *fsrv, char **argv) { static void set_up_environment(afl_forkserver_t *fsrv, char **argv) {
char *afl_preload;
char *frida_afl_preload = NULL;
set_sanitizer_defaults(); set_sanitizer_defaults();
afl_fsrv_setup_preload(fsrv, argv[0]);
if (get_afl_env("AFL_PRELOAD")) {
if (fsrv->qemu_mode) {
/* afl-qemu-trace takes care of converting AFL_PRELOAD. */
} else if (fsrv->frida_mode) {
afl_preload = getenv("AFL_PRELOAD");
u8 *frida_binary = find_afl_binary(argv[0], "afl-frida-trace.so");
if (afl_preload) {
frida_afl_preload = alloc_printf("%s:%s", afl_preload, frida_binary);
} else {
frida_afl_preload = alloc_printf("%s", frida_binary);
}
ck_free(frida_binary);
setenv("LD_PRELOAD", frida_afl_preload, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_afl_preload, 1);
#endif
} else {
/* CoreSight mode uses the default behavior. */
setenv("LD_PRELOAD", getenv("AFL_PRELOAD"), 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", getenv("AFL_PRELOAD"), 1);
#endif
}
} else if (fsrv->frida_mode) {
u8 *frida_binary = find_afl_binary(argv[0], "afl-frida-trace.so");
setenv("LD_PRELOAD", frida_binary, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_binary, 1);
#endif
ck_free(frida_binary);
}
if (frida_afl_preload) { ck_free(frida_afl_preload); }
} }

54
src/afl-tmin.c
View File

@ -900,8 +900,6 @@ static void handle_stop_sig(int sig) {
static void set_up_environment(afl_forkserver_t *fsrv, char **argv) { static void set_up_environment(afl_forkserver_t *fsrv, char **argv) {
u8 *x; u8 *x;
char *afl_preload;
char *frida_afl_preload = NULL;
fsrv->dev_null_fd = open("/dev/null", O_RDWR); fsrv->dev_null_fd = open("/dev/null", O_RDWR);
if (fsrv->dev_null_fd < 0) { PFATAL("Unable to open /dev/null"); } if (fsrv->dev_null_fd < 0) { PFATAL("Unable to open /dev/null"); }
@ -945,57 +943,7 @@ static void set_up_environment(afl_forkserver_t *fsrv, char **argv) {
} }
set_sanitizer_defaults(); set_sanitizer_defaults();
afl_fsrv_setup_preload(fsrv, argv[0]);
if (get_afl_env("AFL_PRELOAD")) {
if (fsrv->qemu_mode) {
/* afl-qemu-trace takes care of converting AFL_PRELOAD. */
} else if (fsrv->frida_mode) {
afl_preload = getenv("AFL_PRELOAD");
u8 *frida_binary = find_afl_binary(argv[0], "afl-frida-trace.so");
if (afl_preload) {
frida_afl_preload = alloc_printf("%s:%s", afl_preload, frida_binary);
} else {
frida_afl_preload = alloc_printf("%s", frida_binary);
}
ck_free(frida_binary);
setenv("LD_PRELOAD", frida_afl_preload, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_afl_preload, 1);
#endif
} else {
/* CoreSight mode uses the default behavior. */
setenv("LD_PRELOAD", getenv("AFL_PRELOAD"), 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", getenv("AFL_PRELOAD"), 1);
#endif
}
} else if (fsrv->frida_mode) {
u8 *frida_binary = find_afl_binary(argv[0], "afl-frida-trace.so");
setenv("LD_PRELOAD", frida_binary, 1);
#ifdef __APPLE__
setenv("DYLD_INSERT_LIBRARIES", frida_binary, 1);
#endif
ck_free(frida_binary);
}
if (frida_afl_preload) { ck_free(frida_afl_preload); }
} }