Exemplo n.º 1
0
void rec_restore_mode(int (*restore_mode)(FILE *file))
{
	rec_name_complete();

	if (!rec_file) return;

	if (restore_mode)
	if (restore_mode(rec_file)) rec_format_error("fscanf");

/*
 * Unlocking the file explicitly is normally not necessary since we're about to
 * close it anyway (which would normally release the lock).  However, when
 * we're the main process running with --fork, our newborn children may hold a
 * copy of the fd for a moment (until they close the fd themselves).  Thus, if
 * we don't explicitly remove the lock, there may be a race condition between
 * our children closing the fd and us proceeding to re-open and re-lock it.
 */
	rec_unlock();

	if (fclose(rec_file)) pexit("fclose");
	rec_file = NULL;

	rec_restoring_now = 0;
}
Exemplo n.º 2
0
void rec_restore_args(int lock)
{
	char line[LINE_BUFFER_SIZE];
	int index, argc;
	char **argv;
	char *save_rec_name;

	rec_name_complete();
	if (!(rec_file = fopen(path_expand(rec_name), "r+"))) {
		if (options.fork && !john_main_process && errno == ENOENT) {
			fprintf(stderr, "%u Session completed\n",
			    options.node_min);
			if (options.flags & FLG_STATUS_CHK)
				return;
			log_event("No crash recovery file, terminating");
			log_done();
			exit(0);
		}
		pexit("fopen: %s", path_expand(rec_name));
	}
	rec_fd = fileno(rec_file);

	if (lock) rec_lock();

	if (!fgetl(line, sizeof(line), rec_file)) rec_format_error("fgets");

	rec_version = 0;
	if (!strcmp(line, RECOVERY_V4)) rec_version = 4; else
	if (!strcmp(line, RECOVERY_V3)) rec_version = 3; else
	if (!strcmp(line, RECOVERY_V2)) rec_version = 2; else
	if (!strcmp(line, RECOVERY_V1)) rec_version = 1; else
	if (strcmp(line, RECOVERY_V0)) rec_format_error(NULL);

	if (fscanf(rec_file, "%d\n", &argc) != 1)
		rec_format_error("fscanf");
	if (argc < 2)
		rec_format_error(NULL);
	argv = mem_alloc_tiny(sizeof(char *) * (argc + 1), MEM_ALIGN_WORD);

	argv[0] = "john";

	for (index = 1; index < argc; index++)
	if (fgetl(line, sizeof(line), rec_file))
		argv[index] = str_alloc_copy(line);
	else
		rec_format_error("fgets");

	argv[argc] = NULL;

	save_rec_name = rec_name;
	opt_init(argv[0], argc, argv);
	rec_name = save_rec_name;
	rec_name_completed = 1;

	if (fscanf(rec_file, "%u\n%u\n%x\n%x\n",
	    &status_restored_time,
	    &status.guess_count,
	    &status.combs.lo,
	    &status.combs.hi) != 4)
		rec_format_error("fscanf");
	if (!status_restored_time)
		status_restored_time = 1;

	if (rec_version >= 4) {
		if (fscanf(rec_file, "%x\n%x\n%x\n%x\n%x\n%d\n",
		    &status.combs_ehi,
		    &status.crypts.lo,
		    &status.crypts.hi,
		    &status.cands.lo,
		    &status.cands.hi,
		    &status.compat) != 6)
			rec_format_error("fscanf");
	} else {
/* Historically, we were reusing what became the combs field for candidates
 * count when in --stdout mode */
		status.cands = status.combs;
		status.compat = 1;
	}

	if (rec_version == 0) {
		status.pass = 0;
		status.progress = -1;
	} else
	if (fscanf(rec_file, "%d\n%d\n", &status.pass, &status.progress) != 2)
		rec_format_error("fscanf");
	if (status.pass < 0 || status.pass > 3)
		rec_format_error(NULL);

	if (rec_version < 3)
		rec_check = 0;
	else
	if (fscanf(rec_file, "%x\n", &rec_check) != 1)
		rec_format_error("fscanf");

	rec_restoring_now = 1;
}
Exemplo n.º 3
0
void rec_restore_args(int lock)
{
	char line[LINE_BUFFER_SIZE];
	int index, argc;
	char **argv;
	char *save_rec_name;

	rec_name_complete();
	if (!(rec_file = fopen(path_expand(rec_name), "r+"))) {
#ifndef HAVE_MPI
		if (options.fork && !john_main_process && errno == ENOENT) {
#else
		if (options.node_min > 1 && errno == ENOENT) {
#endif
			fprintf(stderr, "%u Session completed\n",
			    options.node_min);
			if (options.flags & FLG_STATUS_CHK)
				return;
			log_event("No crash recovery file, terminating");
			log_done();
#ifdef HAVE_MPI
			mpi_teardown();
#endif
			exit(0);
		}
#ifdef HAVE_MPI
		if (mpi_p > 1) {
			fprintf(stderr, "%u@%s: fopen: %s: %s\n",
				mpi_id + 1, mpi_name,
				path_expand(rec_name), strerror(errno));
			error();
		}
#endif
		pexit("fopen: %s", path_expand(rec_name));
	}
	rec_fd = fileno(rec_file);

	if (lock) rec_lock(lock);

	if (!fgetl(line, sizeof(line), rec_file)) rec_format_error("fgets");

	rec_version = 0;
	if (!strcmp(line, RECOVERY_V4)) rec_version = 4; else
	if (!strcmp(line, RECOVERY_V3)) rec_version = 3; else
	if (!strcmp(line, RECOVERY_V2)) rec_version = 2; else
	if (!strcmp(line, RECOVERY_V1)) rec_version = 1; else
	if (strcmp(line, RECOVERY_V0)) rec_format_error(NULL);

	if (fscanf(rec_file, "%d\n", &argc) != 1)
		rec_format_error("fscanf");
	if (argc < 2)
		rec_format_error(NULL);
	argv = mem_alloc_tiny(sizeof(char *) * (argc + 1), MEM_ALIGN_WORD);

	argv[0] = "john";

	for (index = 1; index < argc; index++)
	if (fgetl(line, sizeof(line), rec_file))
		argv[index] = str_alloc_copy(line);
	else
		rec_format_error("fgets");

	argv[argc] = NULL;

	save_rec_name = rec_name;
	opt_init(argv[0], argc, argv, 0);
	rec_name = save_rec_name;
	rec_name_completed = 1;

	if (fscanf(rec_file, "%u\n%u\n%x\n%x\n",
	    &status_restored_time,
	    &status.guess_count,
	    &status.combs.lo,
	    &status.combs.hi) != 4)
		rec_format_error("fscanf");
	if (!status_restored_time)
		status_restored_time = 1;

	if (rec_version >= 4) {
		if (fscanf(rec_file, "%x\n%x\n%x\n%x\n%x\n%d\n",
		    &status.combs_ehi,
		    &status.crypts.lo,
		    &status.crypts.hi,
		    &status.cands.lo,
		    &status.cands.hi,
		    &status.compat) != 6)
			rec_format_error("fscanf");
	} else {
/* Historically, we were reusing what became the combs field for candidates
 * count when in --stdout mode */
		status.cands = status.combs;
		status.compat = 1;
	}

	if (rec_version == 0) {
		status.pass = 0;
		status.progress = -1;
	} else
	if (fscanf(rec_file, "%d\n%d\n", &status.pass, &status.progress) != 2)
		rec_format_error("fscanf");
	if (status.pass < 0 || status.pass > 3)
		rec_format_error(NULL);

	if (rec_version < 3)
		rec_check = 0;
	else
	if (fscanf(rec_file, "%x\n", &rec_check) != 1)
		rec_format_error("fscanf");

	rec_restoring_now = 1;
}

void rec_restore_mode(int (*restore_mode)(FILE *file))
{
	rec_name_complete();

	if (!rec_file) return;

	if (restore_mode)
	if (restore_mode(rec_file)) rec_format_error("fscanf");

	if (options.flags & FLG_MASK_STACKED)
	if (mask_restore_state(rec_file)) rec_format_error("fscanf");
/*
 * Unlocking the file explicitly is normally not necessary since we're about to
 * close it anyway (which would normally release the lock).  However, when
 * we're the main process running with --fork, our newborn children may hold a
 * copy of the fd for a moment (until they close the fd themselves).  Thus, if
 * we don't explicitly remove the lock, there may be a race condition between
 * our children closing the fd and us proceeding to re-open and re-lock it.
 */
	rec_unlock();

	if (fclose(rec_file)) pexit("fclose");
	rec_file = NULL;

	rec_restoring_now = 0;
}