author | Matthew Wild <mwild1@gmail.com> |
Mon, 15 Jul 2013 23:43:20 +0100 | |
changeset 5752 | 729c78581308 |
parent 5750 | fbff8ecb6662 |
child 5810 | 99ad8d42d0c9 |
permissions | -rw-r--r-- |
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/* Prosody IM |
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-- |
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-- This project is MIT/X11 licensed. Please see the |
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-- COPYING file in the source package for more information. |
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-- |
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-- Copyright (C) 2012 Paul Aurich |
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-- Copyright (C) 2013 Matthew Wild |
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-- Copyright (C) 2013 Florian Zeitz |
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-- |
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*/ |
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#include <stddef.h> |
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#include <string.h> |
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#include <errno.h> |
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#ifndef _WIN32 |
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#include <sys/ioctl.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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#include <ifaddrs.h> |
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#include <arpa/inet.h> |
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#include <netinet/in.h> |
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#endif |
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#include <lua.h> |
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#include <lauxlib.h> |
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/* Enumerate all locally configured IP addresses */ |
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const char * const type_strings[] = { |
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"both", |
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"ipv4", |
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"ipv6", |
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NULL |
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}; |
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static int lc_local_addresses(lua_State *L) |
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{ |
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#ifndef _WIN32 |
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/* Link-local IPv4 addresses; see RFC 3927 and RFC 5735 */ |
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const long ip4_linklocal = htonl(0xa9fe0000); /* 169.254.0.0 */ |
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const long ip4_mask = htonl(0xffff0000); |
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struct ifaddrs *addr = NULL, *a; |
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int n = 1; |
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#endif |
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int type = luaL_checkoption(L, 1, "both", type_strings); |
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const char link_local = lua_toboolean(L, 2); /* defaults to 0 (false) */ |
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const char ipv4 = (type == 0 || type == 1); |
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const char ipv6 = (type == 0 || type == 2); |
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#ifndef _WIN32 |
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if (getifaddrs(&addr) < 0) { |
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lua_pushnil(L); |
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lua_pushfstring(L, "getifaddrs failed (%d): %s", errno, |
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strerror(errno)); |
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return 2; |
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} |
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#endif |
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lua_newtable(L); |
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#ifndef _WIN32 |
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for (a = addr; a; a = a->ifa_next) { |
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int family; |
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char ipaddr[INET6_ADDRSTRLEN]; |
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const char *tmp = NULL; |
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if (a->ifa_addr == NULL || a->ifa_flags & IFF_LOOPBACK) |
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continue; |
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family = a->ifa_addr->sa_family; |
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if (ipv4 && family == AF_INET) { |
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struct sockaddr_in *sa = (struct sockaddr_in *)a->ifa_addr; |
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if (!link_local &&((sa->sin_addr.s_addr & ip4_mask) == ip4_linklocal)) |
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continue; |
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tmp = inet_ntop(family, &sa->sin_addr, ipaddr, sizeof(ipaddr)); |
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} else if (ipv6 && family == AF_INET6) { |
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struct sockaddr_in6 *sa = (struct sockaddr_in6 *)a->ifa_addr; |
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if (!link_local && IN6_IS_ADDR_LINKLOCAL(&sa->sin6_addr)) |
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continue; |
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if (IN6_IS_ADDR_V4MAPPED(&sa->sin6_addr) || IN6_IS_ADDR_V4COMPAT(&sa->sin6_addr)) |
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continue; |
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tmp = inet_ntop(family, &sa->sin6_addr, ipaddr, sizeof(ipaddr)); |
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} |
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if (tmp != NULL) { |
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lua_pushstring(L, tmp); |
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lua_rawseti(L, -2, n++); |
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} |
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/* TODO: Error reporting? */ |
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} |
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freeifaddrs(addr); |
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#endif |
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return 1; |
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} |
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int luaopen_util_net(lua_State* L) |
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util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
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100 |
{ |
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util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
101 |
luaL_Reg exports[] = { |
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
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102 |
{ "local_addresses", lc_local_addresses }, |
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
103 |
{ NULL, NULL } |
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
104 |
}; |
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
105 |
|
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
106 |
luaL_register(L, "net", exports); |
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
107 |
return 1; |
e9f5384f5ff1
util.net: Add util.net, containing local_addresses() (removed from LuaSocket 3.0)
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
108 |
} |