+++ /dev/null
-/*
- * nixio - Linux I/O library for lua
- *
- * Copyright (C) 2009 Steven Barth <steven@midlink.org>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "nixio.h"
-
-#ifndef __WINNT__
-#include <net/if.h>
-#endif
-
-#include <sys/types.h>
-#include <sys/time.h>
-#include <string.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#ifndef IPV6_ADD_MEMBERSHIP
-#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
-#endif
-
-#ifndef IPV6_DROP_MEMBERSHIP
-#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
-#endif
-
-static int nixio_sock_fileno(lua_State *L) {
- lua_pushinteger(L, nixio__checkfd(L, 1));
- return 1;
-}
-
-/**
- * setblocking()
- */
-static int nixio_sock_setblocking(lua_State *L) {
- int fd = nixio__checkfd(L, 1);
- luaL_checkany(L, 2);
- int set = lua_toboolean(L, 2);
-
-#ifndef __WINNT__
-
- int flags = fcntl(fd, F_GETFL);
-
- if (flags == -1) {
- return nixio__perror(L);
- }
-
- if (!set) {
- flags |= O_NONBLOCK;
- } else {
- flags &= ~O_NONBLOCK;
- }
-
- return nixio__pstatus(L, !fcntl(fd, F_SETFL, flags));
-
-#else /* __WINNT__ */
-
- lua_getmetatable(L, 1);
- luaL_getmetatable(L, NIXIO_META);
- if (lua_equal(L, -1, -2)) { /* Socket */
- unsigned long val = !set;
- return nixio__pstatus_s(L, !ioctlsocket(fd, FIONBIO, &val));
- } else { /* File */
- WSASetLastError(WSAENOTSOCK);
- return nixio__perror_s(L);
- }
-
-#endif /* __WINNT__ */
-}
-
-static int nixio__gso_int(lua_State *L, int fd, int level, int opt, int set) {
- int value;
- socklen_t optlen = sizeof(value);
- if (!set) {
- if (!getsockopt(fd, level, opt, (char *)&value, &optlen)) {
- lua_pushinteger(L, value);
- return 1;
- }
- } else {
- value = luaL_checkinteger(L, set);
- if (!setsockopt(fd, level, opt, (char *)&value, optlen)) {
- lua_pushboolean(L, 1);
- return 1;
- }
- }
- return nixio__perror_s(L);
-}
-
-static int nixio__gso_ling(lua_State *L, int fd, int level, int opt, int set) {
- struct linger value;
- socklen_t optlen = sizeof(value);
- if (!set) {
- if (!getsockopt(fd, level, opt, (char *)&value, &optlen)) {
- lua_pushinteger(L, value.l_onoff ? value.l_linger : 0);
- return 1;
- }
- } else {
- value.l_linger = luaL_checkinteger(L, set);
- value.l_onoff = value.l_linger ? 1 : 0;
- if (!setsockopt(fd, level, opt, (char *)&value, optlen)) {
- lua_pushboolean(L, 1);
- return 1;
- }
- }
- return nixio__perror_s(L);
-}
-
-static int nixio__gso_timev(lua_State *L, int fd, int level, int opt, int set) {
- struct timeval value;
- socklen_t optlen = sizeof(value);
- if (!set) {
- if (!getsockopt(fd, level, opt, (char *)&value, &optlen)) {
- lua_pushinteger(L, value.tv_sec);
- lua_pushinteger(L, value.tv_usec);
- return 2;
- }
- } else {
- value.tv_sec = luaL_checkinteger(L, set);
- value.tv_usec = luaL_optinteger(L, set + 1, 0);
- if (!setsockopt(fd, level, opt, (char *)&value, optlen)) {
- lua_pushboolean(L, 1);
- return 1;
- }
- }
- return nixio__perror_s(L);
-}
-
-#ifdef SO_BINDTODEVICE
-
-static int nixio__gso_b(lua_State *L, int fd, int level, int opt, int set) {
- if (!set) {
- socklen_t optlen = IFNAMSIZ;
- char ifname[IFNAMSIZ];
- if (!getsockopt(fd, level, opt, (char *)ifname, &optlen)) {
- lua_pushlstring(L, ifname, optlen);
- return 1;
- }
- } else {
- size_t valuelen;
- const char *value = luaL_checklstring(L, set, &valuelen);
- luaL_argcheck(L, valuelen <= IFNAMSIZ, set, "invalid interface name");
- if (!setsockopt(fd, level, opt, (char *)value, valuelen)) {
- lua_pushboolean(L, 1);
- return 1;
- }
- }
- return nixio__perror_s(L);
-}
-
-#endif /* SO_BINDTODEVICE */
-
-static int nixio__gso_mreq4(lua_State *L, int fd, int level, int opt, int set) {
- struct ip_mreq value;
- socklen_t optlen = sizeof(value);
- if (!set) {
- char buf[INET_ADDRSTRLEN];
- if (!getsockopt(fd, level, opt, (char *)&value, &optlen)) {
- if (!inet_ntop(AF_INET, &value.imr_multiaddr, buf, sizeof(buf))) {
- return nixio__perror_s(L);
- }
- lua_pushstring(L, buf);
- if (!inet_ntop(AF_INET, &value.imr_interface, buf, sizeof(buf))) {
- return nixio__perror_s(L);
- }
- lua_pushstring(L, buf);
- return 2;
- }
- } else {
- const char *maddr = luaL_checkstring(L, set);
- const char *iface = luaL_optstring(L, set + 1, "0.0.0.0");
- if (inet_pton(AF_INET, maddr, &value.imr_multiaddr) < 1) {
- return nixio__perror_s(L);
- }
- if (inet_pton(AF_INET, iface, &value.imr_interface) < 1) {
- return nixio__perror_s(L);
- }
- if (!setsockopt(fd, level, opt, (char *)&value, optlen)) {
- lua_pushboolean(L, 1);
- return 1;
- }
- }
- return nixio__perror_s(L);
-}
-
-static int nixio__gso_mreq6(lua_State *L, int fd, int level, int opt, int set) {
- struct ipv6_mreq val;
- socklen_t optlen = sizeof(val);
- if (!set) {
- char buf[INET_ADDRSTRLEN];
- if (!getsockopt(fd, level, opt, (char *)&val, &optlen)) {
- if (!inet_ntop(AF_INET6, &val.ipv6mr_multiaddr, buf, sizeof(buf))) {
- return nixio__perror_s(L);
- }
- lua_pushstring(L, buf);
- lua_pushinteger(L, val.ipv6mr_interface);
- return 2;
- }
- } else {
- const char *maddr = luaL_checkstring(L, set);
- if (inet_pton(AF_INET6, maddr, &val.ipv6mr_multiaddr) < 1) {
- return nixio__perror_s(L);
- }
- val.ipv6mr_interface = luaL_optlong(L, set + 1, 0);
- if (!setsockopt(fd, level, opt, (char *)&val, optlen)) {
- lua_pushboolean(L, 1);
- return 1;
- }
- }
- return nixio__perror_s(L);
-}
-
-/**
- * get/setsockopt() helper
- */
-static int nixio__getsetsockopt(lua_State *L, int set) {
- nixio_sock *sock = nixio__checksock(L);
- const char *level = luaL_optlstring(L, 2, "", NULL);
- const char *option = luaL_optlstring(L, 3, "", NULL);
- set = (set) ? 4 : 0;
-
- if (!strcmp(level, "socket")) {
- if (!strcmp(option, "keepalive")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_KEEPALIVE, set);
- } else if (!strcmp(option, "reuseaddr")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_REUSEADDR, set);
- } else if (!strcmp(option, "rcvbuf")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_RCVBUF, set);
- } else if (!strcmp(option, "sndbuf")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_SNDBUF, set);
- } else if (!strcmp(option, "priority")) {
-#ifdef SO_PRIORITY
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_PRIORITY, set);
-#else
- return nixio__pstatus(L, !(errno = ENOPROTOOPT));
-#endif
- } else if (!strcmp(option, "broadcast")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_BROADCAST, set);
- } else if (!strcmp(option, "dontroute")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_DONTROUTE, set);
- } else if (!strcmp(option, "error")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_ERROR, set);
- } else if (!strcmp(option, "oobinline")) {
- return nixio__gso_int(L, sock->fd, SOL_SOCKET, SO_OOBINLINE, set);
- } else if (!strcmp(option, "linger")) {
- return nixio__gso_ling(L, sock->fd, SOL_SOCKET, SO_LINGER, set);
- } else if (!strcmp(option, "sndtimeo")) {
- return nixio__gso_timev(L, sock->fd, SOL_SOCKET, SO_SNDTIMEO, set);
- } else if (!strcmp(option, "rcvtimeo")) {
- return nixio__gso_timev(L, sock->fd, SOL_SOCKET, SO_RCVTIMEO, set);
- } else if (!strcmp(option, "bindtodevice")) {
-#ifdef SO_BINDTODEVICE
- return nixio__gso_b(L, sock->fd, SOL_SOCKET, SO_BINDTODEVICE, set);
-#else
- return nixio__pstatus(L, !(errno = ENOPROTOOPT));
-#endif
- } else {
- return luaL_argerror(L, 3, "supported values: keepalive, reuseaddr,"
- " sndbuf, rcvbuf, priority, broadcast, linger, sndtimeo, rcvtimeo,"
- " dontroute, bindtodevice, error, oobinline"
- );
- }
- } else if (!strcmp(level, "tcp")) {
- if (!strcmp(option, "cork")) {
-#ifdef TCP_CORK
- return nixio__gso_int(L, sock->fd, IPPROTO_TCP, TCP_CORK, set);
-#else
- return nixio__pstatus(L, !(errno = ENOPROTOOPT));
-#endif
- } else if (!strcmp(option, "nodelay")) {
- return nixio__gso_int(L, sock->fd, IPPROTO_TCP, TCP_NODELAY, set);
- } else {
- return luaL_argerror(L, 3, "supported values: cork, nodelay");
- }
- } else if (!strcmp(level, "ip")) {
- if (!strcmp(option, "mtu")) {
-#ifdef IP_MTU
- return nixio__gso_int(L, sock->fd, IPPROTO_IP, IP_MTU, set);
-#else
- return nixio__pstatus(L, !(errno = ENOPROTOOPT));
-#endif
- } else if (!strcmp(option, "hdrincl")) {
- return nixio__gso_int(L, sock->fd, IPPROTO_IP, IP_HDRINCL,
- set);
- } else if (!strcmp(option, "multicast_loop")) {
- return nixio__gso_int(L, sock->fd, IPPROTO_IP, IP_MULTICAST_LOOP,
- set);
- } else if (!strcmp(option, "multicast_ttl")) {
- return nixio__gso_int(L, sock->fd, IPPROTO_IP, IP_MULTICAST_TTL,
- set);
- } else if (!strcmp(option, "multicast_if")) {
- return nixio__gso_mreq4(L, sock->fd, IPPROTO_IP, IP_MULTICAST_IF,
- set);
- } else if (!strcmp(option, "add_membership")) {
- return nixio__gso_mreq4(L, sock->fd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
- set);
- } else if (!strcmp(option, "drop_membership")) {
- return nixio__gso_mreq4(L, sock->fd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
- set);
- } else {
- return luaL_argerror(L, 3,
- "supported values: hdrincl, mtu, multicast_loop, "
- "multicast_ttl, multicast_if, add_membership, drop_membership");
- }
- } else if (!strcmp(level, "ipv6")) {
- if (!strcmp(option, "mtu")) {
-#ifdef IPV6_MTU
- return nixio__gso_int(L, sock->fd, IPPROTO_IPV6, IPV6_MTU, set);
-#else
- return nixio__pstatus(L, !(errno = ENOPROTOOPT));
-#endif
- } else if (!strcmp(option, "v6only")) {
-#ifdef IPV6_V6ONLY
- return nixio__gso_int(L, sock->fd, IPPROTO_IPV6, IPV6_V6ONLY, set);
-#else
- return nixio__pstatus(L, !(errno = ENOPROTOOPT));
-#endif
- } else if (!strcmp(option, "multicast_loop")) {
- return nixio__gso_int(L, sock->fd, IPPROTO_IPV6,
- IPV6_MULTICAST_LOOP, set);
- } else if (!strcmp(option, "multicast_hops")) {
- return nixio__gso_int(L, sock->fd, IPPROTO_IPV6,
- IPV6_MULTICAST_HOPS, set);
- } else if (!strcmp(option, "multicast_if")) {
- return nixio__gso_mreq6(L, sock->fd, IPPROTO_IPV6,
- IPV6_MULTICAST_IF, set);
- } else if (!strcmp(option, "add_membership")) {
- return nixio__gso_mreq6(L, sock->fd, IPPROTO_IPV6,
- IPV6_ADD_MEMBERSHIP, set);
- } else if (!strcmp(option, "drop_membership")) {
- return nixio__gso_mreq6(L, sock->fd, IPPROTO_IPV6,
- IPV6_DROP_MEMBERSHIP, set);
- } else {
- return luaL_argerror(L, 3,
- "supported values: v6only, mtu, multicast_loop, multicast_hops,"
- " multicast_if, add_membership, drop_membership");
- }
- } else {
- return luaL_argerror(L, 2, "supported values: socket, tcp, ip, ipv6");
- }
-}
-
-/**
- * getsockopt()
- */
-static int nixio_sock_getsockopt(lua_State *L) {
- return nixio__getsetsockopt(L, 0);
-}
-
-/**
- * setsockopt()
- */
-static int nixio_sock_setsockopt(lua_State *L) {
- return nixio__getsetsockopt(L, 1);
-}
-
-/* module table */
-static const luaL_reg M[] = {
- {"setblocking", nixio_sock_setblocking},
- {"getsockopt", nixio_sock_getsockopt},
- {"setsockopt", nixio_sock_setsockopt},
- {"getopt", nixio_sock_getsockopt},
- {"setopt", nixio_sock_setsockopt},
- {"fileno", nixio_sock_fileno},
- {NULL, NULL}
-};
-
-void nixio_open_sockopt(lua_State *L) {
- lua_pushvalue(L, -2);
- luaL_register(L, NULL, M);
- lua_pop(L, 1);
-
- luaL_getmetatable(L, NIXIO_FILE_META);
- lua_pushcfunction(L, nixio_sock_setblocking);
- lua_setfield(L, -2, "setblocking");
- lua_pushcfunction(L, nixio_sock_fileno);
- lua_setfield(L, -2, "fileno");
- lua_pop(L, 1);
-}
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