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#include <dlfcn.h>
#if defined(__linux__) && !defined(__ANDROID__)
#include <sys/prctl.h>
#endif
#include "frida-gumjs.h"
#include "entry.h"
#include "instrument.h"
#include "persistent.h"
#include "ranges.h"
#include "seccomp.h"
#include "stalker.h"
#include "stats.h"
#include "util.h"
extern void __afl_manual_init();
guint64 entry_point = 0;
gboolean traceable = FALSE;
gboolean entry_compiled = FALSE;
gboolean entry_run = FALSE;
static void entry_launch(void) {
FVERBOSE("Entry point reached");
__afl_manual_init();
/* Child here */
entry_run = TRUE;
entry_on_fork();
instrument_on_fork();
seccomp_on_fork();
stats_on_fork();
}
#if defined(__linux__) && defined(PR_SET_PTRACER) && !defined(__ANDROID__)
void entry_on_fork(void) {
if (traceable) {
if (prctl(PR_SET_PTRACER, PR_SET_PTRACER_ANY) < 0) {
FFATAL("Failed to PR_SET_PTRACER");
}
}
}
#else
void entry_on_fork(void) {
if (traceable) { FWARNF("AFL_FRIDA_TRACEABLE unsupported"); }
}
#endif
void entry_config(void) {
entry_point = util_read_address("AFL_ENTRYPOINT", 0);
if (getenv("AFL_FRIDA_TRACEABLE") != NULL) { traceable = TRUE; }
}
void entry_init(void) {
FVERBOSE("Entry Point: 0x%016" G_GINT64_MODIFIER "X", entry_point);
FVERBOSE("Dumpable: [%c]", traceable ? 'X' : ' ');
if (dlopen(NULL, RTLD_NOW) == NULL) { FFATAL("Failed to dlopen: %d", errno); }
}
void entry_start(void) {
if (persistent_start == 0) {
ranges_exclude();
stalker_trust();
}
if (entry_point == 0) { entry_launch(); }
}
static void entry_callout(GumCpuContext *cpu_context, gpointer user_data) {
UNUSED_PARAMETER(cpu_context);
UNUSED_PARAMETER(user_data);
entry_compiled = TRUE;
entry_launch();
}
void entry_prologue(GumStalkerIterator *iterator, GumStalkerOutput *output) {
UNUSED_PARAMETER(output);
FVERBOSE("AFL_ENTRYPOINT reached");
if (persistent_start == 0) {
ranges_exclude();
stalker_trust();
}
gum_stalker_iterator_put_callout(iterator, entry_callout, NULL, NULL);
}
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