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/*
* Copyright (c) 2024-2025 Pablo Neira Ayuso <pablo@netfilter.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 (or any
* later) as published by the Free Software Foundation.
*/
/* Funded through the NGI0 Entrust established by NLnet (https://nlnet.nl)
* with support from the European Commission's Next Generation Internet
* programme.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <getopt.h>
#include "test.h"
static int run_test_dir(const char *filename, struct nft_test_ctx *ctx,
struct nft_test_stats *stats)
{
struct dirent *dent;
char path[PATH_MAX];
struct stat st;
int ret = 0;
DIR *d;
d = opendir(filename);
if (!d) {
perror("cannot open directory");
return -1;
}
dent = readdir(d);
while (dent) {
if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) {
dent = readdir(d);
continue;
}
snprintf(path, sizeof(path), "%s/%s", filename, dent->d_name);
if (stat(path, &st) < 0) {
fprintf(stderr, "cannot open file %s: %s\n",
path, strerror(errno));
return -1;
}
if (S_ISDIR(st.st_mode)) {
if (run_test_dir(path, ctx, stats) < 0) {
ret = -1;
break;
}
dent = readdir(d);
continue;
} else if (!S_ISREG(st.st_mode)) {
dent = readdir(d);
continue;
}
if (run_test(path, ctx) < 0)
stats->failed++;
else
stats->ok++;
if (ctx->fatal) {
ret = -1;
break;
}
dent = readdir(d);
}
closedir(d);
return ret;
}
static int parse_fuzz_mode(char *str, uint32_t *type, uint32_t *num_types)
{
char *x, *token;
int a, idx = 0;
x = strchr(str, ',');
do {
if (idx >= FUZZ_STACK_MAX) {
printf("too many modes\n");
return -1;
}
if (!x) {
token = str;
a = fuzz_type_to_value(token);
if (a < 0) {
printf("unknown fuzzing mode %s\n", token);
printf("Expected:\n", token);
print_fuzz_modes();
return -1;
}
type[idx++] = a;
break;
}
*x = '\0';
token = str;
a = fuzz_type_to_value(token);
if (a < 0) {
printf("unknown fuzzing mode %s\n", token);
printf("Expected:\n", token);
print_fuzz_modes();
return -1;
}
type[idx++] = a;
str = x + 1;
x = strchr(str, ',');
} while (1);
*num_types = idx;
return idx;
}
bool errout;
bool noflush;
int main(int argc, char *argv[])
{
struct timeval tv_start, tv_end, tv_diff;
struct nft_test_stats stats = {};
struct nft_test_ctx ctx = {};
const char *filename;
struct stat st;
int opt;
while ((opt = getopt(argc, argv, "nf:hedc")) != -1) {
switch (opt) {
case 'n':
noflush = true;
break;
case 'f':
ctx.fuzz = true;
if (parse_fuzz_mode(optarg, ctx.fuzz_ctx.type, &ctx.fuzz_ctx.num_types) < 0)
exit(EXIT_FAILURE);
break;
case 'd':
ctx.fuzz_ctx.debug = true;
break;
case 'e':
errout = true;
break;
case 'c':
ctx.dryrun = true;
break;
case 'h':
default:
fprintf(stderr, "Usage: %s [-e] [-d] [-n] [-c] [-f <mode,...>] <input>\n",
argv[0]);
printf("Options:\n");
printf("\t-e\tdisplay error reported by kernel\n");
printf("\t-n\tdo not flush previous ruleset\n");
printf("\t-d\tdisplay debugging information\n");
printf("\t-c\tdry run\n");
printf("\t-f <mode>\tfuzz test, see fuzz modes\n");
printf("Available fuzz modes:\n");
print_fuzz_modes();
exit(EXIT_FAILURE);
break;
}
}
if (optind >= argc) {
fprintf(stderr, "ERROR: specify path to file or folder with tests\n");
exit(EXIT_FAILURE);
}
filename = argv[optind];
/* TODO: add dummy device with netlink. */
system("sudo modprobe xt_cpu");
system("sudo ip link add dummy0 type dummy > /dev/null 2>&1");
system("sudo ip link add dummy1 type dummy > /dev/null 2>&1");
system("sudo ip link add dummy2 type dummy > /dev/null 2>&1");
system("sudo ip link add dummy3 type dummy > /dev/null 2>&1");
gettimeofday(&tv_start, NULL);
if (!strcmp(filename, "-"))
filename = "/dev/stdin";
if (stat(filename, &st) < 0) {
fprintf(stderr, "cannot open test file %s: %s\n",
filename, strerror(errno));
return EXIT_FAILURE;
}
if (S_ISDIR(st.st_mode)) {
run_test_dir(filename, &ctx, &stats);
printf("results: [\x1b[32mOK\x1b[37m] %d [\x1b[31mFAILED\x1b[37m] %d\n",
stats.ok, stats.failed);
} else if (S_ISREG(st.st_mode)) {
printf("%s...\n", filename);
run_test(filename, &ctx);
}
gettimeofday(&tv_end, NULL);
timersub(&tv_end, &tv_start, &tv_diff);
if (ctx.fuzz)
printf("total fuzz steps: %u in %u.%06u seconds\n", ctx.fuzz_ctx.total_fuzz_steps, tv_diff.tv_sec, tv_diff.tv_usec);
else
printf("done in %u.%06u seconds\n", tv_diff.tv_sec, tv_diff.tv_usec);
return EXIT_SUCCESS;
}
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