diff options
Diffstat (limited to 'frida_mode/src/stats/stats.c')
| -rw-r--r-- | frida_mode/src/stats/stats.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/frida_mode/src/stats/stats.c b/frida_mode/src/stats/stats.c new file mode 100644 index 00000000..662fb6d5 --- /dev/null +++ b/frida_mode/src/stats/stats.c @@ -0,0 +1,208 @@ +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/shm.h> +#include <sys/mman.h> + +#include "frida-gum.h" + +#include "config.h" +#include "debug.h" +#include "util.h" + +#include "stats.h" + +#define MICRO_TO_SEC 1000000 + +stats_data_header_t *stats_data = NULL; + +static int stats_parent_pid = -1; +static int stats_fd = -1; +static gboolean stats_transitions = FALSE; +static guint64 stats_interval = 0; + +void stats_init(void) { + + stats_parent_pid = getpid(); + char *filename = getenv("AFL_FRIDA_STATS_FILE"); + stats_interval = util_read_num("AFL_FRIDA_STATS_INTERVAL"); + if (getenv("AFL_FRIDA_STATS_TRANSITIONS") != NULL) { + + stats_transitions = TRUE; + + } + + OKF("Stats - file [%s]", filename); + OKF("Stats - interval [%" G_GINT64_MODIFIER "u]", stats_interval); + + if (stats_interval != 0 && filename == NULL) { + + FATAL( + "AFL_FRIDA_STATS_FILE must be specified if " + "AFL_FRIDA_STATS_INTERVAL is"); + + } + + if (stats_interval == 0) { stats_interval = 10; } + + if (filename == NULL) { return; } + + if (!stats_is_supported_arch()) { + + FATAL("Stats is not supported on this architecture"); + + } + + char *path = NULL; + + if (filename == NULL) { return; } + + if (stats_transitions) { gum_stalker_set_counters_enabled(TRUE); } + + path = g_canonicalize_filename(filename, g_get_current_dir()); + + OKF("Stats - path [%s]", path); + + stats_fd = open(path, O_RDWR | O_CREAT | O_TRUNC, + S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); + + if (stats_fd < 0) { FATAL("Failed to open stats file '%s'", path); } + + g_free(path); + + size_t data_size = stats_data_size_arch(); + + int shm_id = shmget(IPC_PRIVATE, data_size, IPC_CREAT | IPC_EXCL | 0600); + if (shm_id < 0) { FATAL("shm_id < 0 - errno: %d\n", errno); } + + stats_data = shmat(shm_id, NULL, 0); + g_assert(stats_data != MAP_FAILED); + + /* + * Configure the shared memory region to be removed once the process dies. + */ + if (shmctl(shm_id, IPC_RMID, NULL) < 0) { + + FATAL("shmctl (IPC_RMID) < 0 - errno: %d\n", errno); + + } + + /* Clear it, not sure it's necessary, just seems like good practice */ + memset(stats_data, '\0', data_size); + +} + +void stats_vprint(int fd, char *format, va_list ap) { + + char buffer[4096] = {0}; + int ret; + int len; + + if (vsnprintf(buffer, sizeof(buffer) - 1, format, ap) < 0) { return; } + + len = strnlen(buffer, sizeof(buffer)); + IGNORED_RETURN(write(fd, buffer, len)); + +} + +void stats_print_fd(int fd, char *format, ...) { + + va_list ap; + va_start(ap, format); + stats_vprint(fd, format, ap); + va_end(ap); + +} + +void stats_print(char *format, ...) { + + va_list ap; + va_start(ap, format); + stats_vprint(stats_fd, format, ap); + va_end(ap); + +} + +void stats_write(void) { + + if (stats_parent_pid == getpid()) { return; } + + GDateTime *date_time = g_date_time_new_now_local(); + char *date_time_string = g_date_time_format(date_time, "%Y-%m-%e %H:%M:%S"); + + stats_print("stats\n"); + stats_print("-----\n"); + + stats_print("Index: %" G_GINT64_MODIFIER "u\n", + stats_data->stats_idx++); + stats_print("Pid: %d\n", getpid()); + stats_print("Time: %s\n", date_time_string); + stats_print("Blocks: %" G_GINT64_MODIFIER "u\n", + stats_data->num_blocks); + stats_print("Instructions: %" G_GINT64_MODIFIER "u\n", + stats_data->num_instructions); + stats_print("Avg Instructions / Block: %" G_GINT64_MODIFIER "u\n", + stats_data->num_instructions / stats_data->num_blocks); + + stats_print("\n"); + + g_free(date_time_string); + g_date_time_unref(date_time); + + stats_write_arch(); + + if (stats_transitions) { + + GDateTime *date_time = g_date_time_new_now_local(); + char *date_time_string = g_date_time_format(date_time, "%Y-%m-%e %H:%M:%S"); + + stats_print_fd(STDERR_FILENO, "stats\n"); + stats_print_fd(STDERR_FILENO, "-----\n"); + stats_print_fd(STDERR_FILENO, "Index: %" G_GINT64_MODIFIER "u\n", + stats_data->transitions_idx++); + stats_print_fd(STDERR_FILENO, "Pid: %d\n", getpid()); + stats_print_fd(STDERR_FILENO, "Time: %s\n", date_time_string); + + g_free(date_time_string); + g_date_time_unref(date_time); + gum_stalker_dump_counters(); + + } + +} + +static void stats_maybe_write(void) { + + guint64 current_time; + + if (stats_interval == 0) { return; } + + current_time = g_get_monotonic_time(); + + if ((current_time - stats_data->stats_last_time) > + (stats_interval * MICRO_TO_SEC)) { + + stats_write(); + stats_data->stats_last_time = current_time; + + } + +} + +void stats_collect(const cs_insn *instr, gboolean begin) { + + UNUSED_PARAMETER(instr); + UNUSED_PARAMETER(begin); + + if (stats_fd < 0) { return; } + + if (begin) { stats_data->num_blocks++; } + stats_data->num_instructions++; + + stats_collect_arch(instr); + + stats_maybe_write(); + +} + |