diff options
Diffstat (limited to 'src/afl-showmap.c')
| -rw-r--r-- | src/afl-showmap.c | 121 |
1 files changed, 112 insertions, 9 deletions
diff --git a/src/afl-showmap.c b/src/afl-showmap.c index 6d95fc1d..b40527d3 100644 --- a/src/afl-showmap.c +++ b/src/afl-showmap.c @@ -39,6 +39,7 @@ #include "sharedmem.h" #include "forkserver.h" #include "common.h" +#include "hash.h" #include <stdio.h> #include <unistd.h> @@ -83,7 +84,10 @@ static u8 quiet_mode, /* Hide non-essential messages? */ binary_mode, /* Write output as a binary map */ keep_cores, /* Allow coredumps? */ remove_shm = 1, /* remove shmem? */ - collect_coverage; /* collect coverage */ + collect_coverage, /* collect coverage */ + have_coverage, /* have coverage? */ + no_classify, /* do not classify counts */ + debug; /* debug mode */ static volatile u8 stop_soon, /* Ctrl-C pressed? */ child_crashed; /* Child crashed? */ @@ -314,7 +318,18 @@ static void showmap_run_target_forkserver(afl_forkserver_t *fsrv, u8 *mem, } - classify_counts(fsrv); + if (fsrv->trace_bits[0] == 1) { + + fsrv->trace_bits[0] = 0; + have_coverage = 1; + + } else { + + have_coverage = 0; + + } + + if (!no_classify) { classify_counts(fsrv); } if (!quiet_mode) { SAYF(cRST "-- Program output ends --\n"); } @@ -487,7 +502,18 @@ static void showmap_run_target(afl_forkserver_t *fsrv, char **argv) { } - classify_counts(fsrv); + if (fsrv->trace_bits[0] == 1) { + + fsrv->trace_bits[0] = 0; + have_coverage = 1; + + } else { + + have_coverage = 0; + + } + + if (!no_classify) { classify_counts(fsrv); } if (!quiet_mode) { SAYF(cRST "-- Program output ends --\n"); } @@ -677,6 +703,7 @@ static void usage(u8 *argv0) { " -q - sink program's output and don't show messages\n" " -e - show edge coverage only, ignore hit counts\n" " -r - show real tuple values instead of AFL filter values\n" + " -s - do not classify the map\n" " -c - allow core dumps\n\n" "This tool displays raw tuple data captured by AFL instrumentation.\n" @@ -717,6 +744,7 @@ int main(int argc, char **argv_orig, char **envp) { char **argv = argv_cpy_dup(argc, argv_orig); afl_forkserver_t fsrv_var = {0}; + if (getenv("AFL_DEBUG")) { debug = 1; } fsrv = &fsrv_var; afl_fsrv_init(fsrv); map_size = get_map_size(); @@ -726,10 +754,14 @@ int main(int argc, char **argv_orig, char **envp) { if (getenv("AFL_QUIET") != NULL) { be_quiet = 1; } - while ((opt = getopt(argc, argv, "+i:o:f:m:t:A:eqCZQUWbcrh")) > 0) { + while ((opt = getopt(argc, argv, "+i:o:f:m:t:A:eqCZQUWbcrsh")) > 0) { switch (opt) { + case 's': + no_classify = 1; + break; + case 'C': collect_coverage = 1; quiet_mode = 1; @@ -913,6 +945,31 @@ int main(int argc, char **argv_orig, char **envp) { if (optind == argc || !out_file) { usage(argv[0]); } + if (fsrv->qemu_mode && getenv("AFL_USE_QASAN")) { + + u8 *preload = getenv("AFL_PRELOAD"); + u8 *libqasan = get_libqasan_path(argv_orig[0]); + + if (!preload) { + + setenv("AFL_PRELOAD", libqasan, 0); + + } else { + + u8 *result = ck_alloc(strlen(libqasan) + strlen(preload) + 2); + strcpy(result, libqasan); + strcat(result, " "); + strcat(result, preload); + + setenv("AFL_PRELOAD", result, 1); + ck_free(result); + + } + + ck_free(libqasan); + + } + if (in_dir) { if (!out_file && !collect_coverage) @@ -936,14 +993,16 @@ int main(int argc, char **argv_orig, char **envp) { // if (afl->shmem_testcase_mode) { setup_testcase_shmem(afl); } + setenv("AFL_NO_AUTODICT", "1", 1); + /* initialize cmplog_mode */ shm.cmplog_mode = 0; - fsrv->trace_bits = afl_shm_init(&shm, map_size, 0); setup_signal_handlers(); set_up_environment(fsrv); fsrv->target_path = find_binary(argv[optind]); + fsrv->trace_bits = afl_shm_init(&shm, map_size, 0); if (!quiet_mode) { @@ -954,7 +1013,6 @@ int main(int argc, char **argv_orig, char **envp) { if (in_dir) { - if (at_file) { PFATAL("Options -A and -i are mutually exclusive"); } detect_file_args(argv + optind, "", &fsrv->use_stdin); } else { @@ -996,6 +1054,7 @@ int main(int argc, char **argv_orig, char **envp) { /* initialize cmplog_mode */ shm_fuzz->cmplog_mode = 0; u8 *map = afl_shm_init(shm_fuzz, MAX_FILE + sizeof(u32), 1); + shm_fuzz->shmemfuzz_mode = 1; if (!map) { FATAL("BUG: Zero return from afl_shm_init."); } #ifdef USEMMAP setenv(SHM_FUZZ_ENV_VAR, shm_fuzz->g_shm_file_path, 1); @@ -1008,6 +1067,43 @@ int main(int argc, char **argv_orig, char **envp) { fsrv->shmem_fuzz_len = (u32 *)map; fsrv->shmem_fuzz = map + sizeof(u32); + if (!fsrv->qemu_mode && !unicorn_mode) { + + u32 save_be_quiet = be_quiet; + be_quiet = !debug; + fsrv->map_size = 4194304; // dummy temporary value + u32 new_map_size = + afl_fsrv_get_mapsize(fsrv, use_argv, &stop_soon, + (get_afl_env("AFL_DEBUG_CHILD") || + get_afl_env("AFL_DEBUG_CHILD_OUTPUT")) + ? 1 + : 0); + be_quiet = save_be_quiet; + + if (new_map_size) { + + // only reinitialize when it makes sense + if (map_size < new_map_size || + (new_map_size > map_size && new_map_size - map_size > MAP_SIZE)) { + + if (!be_quiet) + ACTF("Aquired new map size for target: %u bytes\n", new_map_size); + + afl_shm_deinit(&shm); + afl_fsrv_kill(fsrv); + fsrv->map_size = new_map_size; + fsrv->trace_bits = afl_shm_init(&shm, new_map_size, 0); + + } + + map_size = new_map_size; + + } + + fsrv->map_size = map_size; + + } + if (in_dir) { DIR * dir_in, *dir_out = NULL; @@ -1072,8 +1168,9 @@ int main(int argc, char **argv_orig, char **envp) { } - stdin_file = - alloc_printf("%s/.afl-showmap-temp-%u", use_dir, (u32)getpid()); + stdin_file = at_file ? strdup(at_file) + : (char *)alloc_printf("%s/.afl-showmap-temp-%u", + use_dir, (u32)getpid()); unlink(stdin_file); atexit(at_exit_handler); fsrv->out_file = stdin_file; @@ -1210,12 +1307,18 @@ int main(int argc, char **argv_orig, char **envp) { showmap_run_target(fsrv, use_argv); tcnt = write_results_to_file(fsrv, out_file); + if (!quiet_mode) { + + OKF("Hash of coverage map: %llx", + hash64(fsrv->trace_bits, fsrv->map_size, HASH_CONST)); + + } } if (!quiet_mode || collect_coverage) { - if (!tcnt) { FATAL("No instrumentation detected" cRST); } + if (!tcnt && !have_coverage) { FATAL("No instrumentation detected" cRST); } OKF("Captured %u tuples (highest value %u, total values %llu) in " "'%s'." cRST, tcnt, highest, total, out_file); |