From 435ef7bdc398a2c0ecd8a5f8b8be304c51a9e212 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 15 Jun 2015 13:50:43 +0200 Subject: [PATCH] =?utf8?q?firewall:=20rename=20fw-util.[ch]=20=E2=86=92=20?= =?utf8?q?firewall-util.[ch]?= MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The names fw-util.[ch] are too ambiguous, better rename the files to firewall-util.[ch]. Also rename the test accordingly. --- src/shared/{fw-util.c => firewall-util.c} | 2 +- src/shared/firewall-util.h | 82 +++++++++++++++++++++++ src/test/test-firewall-util.c | 60 +++++++++++++++++ 3 files changed, 143 insertions(+), 1 deletion(-) rename src/shared/{fw-util.c => firewall-util.c} (99%) create mode 100644 src/shared/firewall-util.h create mode 100644 src/test/test-firewall-util.c diff --git a/src/shared/fw-util.c b/src/shared/firewall-util.c similarity index 99% rename from src/shared/fw-util.c rename to src/shared/firewall-util.c index 6b3599d90..effc6e8e7 100644 --- a/src/shared/fw-util.c +++ b/src/shared/firewall-util.c @@ -28,7 +28,7 @@ #include #include "util.h" -#include "fw-util.h" +#include "firewall-util.h" DEFINE_TRIVIAL_CLEANUP_FUNC(struct xtc_handle*, iptc_free); diff --git a/src/shared/firewall-util.h b/src/shared/firewall-util.h new file mode 100644 index 000000000..93152e397 --- /dev/null +++ b/src/shared/firewall-util.h @@ -0,0 +1,82 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +#pragma once + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include "in-addr-util.h" + +#ifdef HAVE_LIBIPTC + +int fw_add_masquerade( + bool add, + int af, + int protocol, + const union in_addr_union *source, + unsigned source_prefixlen, + const char *out_interface, + const union in_addr_union *destination, + unsigned destination_prefixlen); + +int fw_add_local_dnat( + bool add, + int af, + int protocol, + const char *in_interface, + const union in_addr_union *source, + unsigned source_prefixlen, + const union in_addr_union *destination, + unsigned destination_prefixlen, + uint16_t local_port, + const union in_addr_union *remote, + uint16_t remote_port, + const union in_addr_union *previous_remote); + +#else + +static inline int fw_add_masquerade( + bool add, + int af, + int protocol, + const union in_addr_union *source, + unsigned source_prefixlen, + const char *out_interface, + const union in_addr_union *destination, + unsigned destination_prefixlen) { + return -EOPNOTSUPP; +} + +static inline int fw_add_local_dnat( + bool add, + int af, + int protocol, + const char *in_interface, + const union in_addr_union *source, + unsigned source_prefixlen, + const union in_addr_union *destination, + unsigned destination_prefixlen, + uint16_t local_port, + const union in_addr_union *remote, + uint16_t remote_port, + const union in_addr_union *previous_remote) { + return -EOPNOTSUPP; +} + +#endif diff --git a/src/test/test-firewall-util.c b/src/test/test-firewall-util.c new file mode 100644 index 000000000..d636e427c --- /dev/null +++ b/src/test/test-firewall-util.c @@ -0,0 +1,60 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include "log.h" +#include "firewall-util.h" + +#define MAKE_IN_ADDR_UNION(a,b,c,d) (union in_addr_union) { .in.s_addr = htobe32((uint32_t) (a) << 24 | (uint32_t) (b) << 16 | (uint32_t) (c) << 8 | (uint32_t) (d))} + +int main(int argc, char *argv[]) { + int r; + log_set_max_level(LOG_DEBUG); + + r = fw_add_masquerade(true, AF_INET, 0, NULL, 0, "foobar", NULL, 0); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + r = fw_add_masquerade(true, AF_INET, 0, NULL, 0, "foobar", NULL, 0); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + r = fw_add_masquerade(false, AF_INET, 0, NULL, 0, "foobar", NULL, 0); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + r = fw_add_local_dnat(true, AF_INET, IPPROTO_TCP, NULL, NULL, 0, NULL, 0, 4711, &MAKE_IN_ADDR_UNION(1, 2, 3, 4), 815, NULL); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + r = fw_add_local_dnat(true, AF_INET, IPPROTO_TCP, NULL, NULL, 0, NULL, 0, 4711, &MAKE_IN_ADDR_UNION(1, 2, 3, 4), 815, NULL); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + r = fw_add_local_dnat(true, AF_INET, IPPROTO_TCP, NULL, NULL, 0, NULL, 0, 4711, &MAKE_IN_ADDR_UNION(1, 2, 3, 5), 815, &MAKE_IN_ADDR_UNION(1, 2, 3, 4)); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + r = fw_add_local_dnat(false, AF_INET, IPPROTO_TCP, NULL, NULL, 0, NULL, 0, 4711, &MAKE_IN_ADDR_UNION(1, 2, 3, 5), 815, NULL); + if (r < 0) + log_error_errno(r, "Failed to modify firewall: %m"); + + return 0; +} -- 2.30.2