| author | Kim Alvefur <zash@zash.se> |
| Fri, 03 Apr 2015 19:52:48 +0200 | |
| changeset 6618 | 8e4572a642cb |
| parent 6416 | a552f4170aed |
| child 6792 | 6b180e77c97a |
| permissions | -rw-r--r-- |
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1 |
/* Prosody IM |
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2 |
-- |
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3 |
-- This project is MIT/X11 licensed. Please see the |
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4 |
-- COPYING file in the source package for more information. |
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5 |
-- |
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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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11 |
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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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#if (LUA_VERSION_NUM == 502) |
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#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0) |
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#endif |
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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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#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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#endif |
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int n = 1; |
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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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} |
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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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} |
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|
87 |
tmp = inet_ntop(family, &sa->sin_addr, ipaddr, sizeof(ipaddr)); |
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88 |
} else if(ipv6 && family == AF_INET6) { |
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89 |
struct sockaddr_in6* sa = (struct sockaddr_in6*)a->ifa_addr; |
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90 |
|
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91 |
if(!link_local && IN6_IS_ADDR_LINKLOCAL(&sa->sin6_addr)) { |
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92 |
continue; |
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93 |
} |
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94 |
|
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95 |
if(IN6_IS_ADDR_V4MAPPED(&sa->sin6_addr) || IN6_IS_ADDR_V4COMPAT(&sa->sin6_addr)) { |
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|
96 |
continue; |
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97 |
} |
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|
98 |
|
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changeset
|
99 |
tmp = inet_ntop(family, &sa->sin6_addr, ipaddr, sizeof(ipaddr)); |
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|
100 |
} |
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|
101 |
|
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|
102 |
if(tmp != NULL) { |
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|
103 |
lua_pushstring(L, tmp); |
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|
104 |
lua_rawseti(L, -2, n++); |
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parents:
diff
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|
105 |
} |
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106 |
|
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|
107 |
/* TODO: Error reporting? */ |
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108 |
} |
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|
109 |
|
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|
110 |
freeifaddrs(addr); |
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util.net: Fix s2sout on Windows (return 0.0.0.0 and :: instead of an empty list)
Kim Alvefur <zash@zash.se>
parents:
5752
diff
changeset
|
111 |
#else |
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112 |
|
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parents:
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|
113 |
if(ipv4) { |
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|
114 |
lua_pushstring(L, "0.0.0.0"); |
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|
115 |
lua_rawseti(L, -2, n++); |
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parents:
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|
116 |
} |
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|
117 |
|
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|
118 |
if(ipv6) { |
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|
119 |
lua_pushstring(L, "::"); |
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|
120 |
lua_rawseti(L, -2, n++); |
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parents:
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|
121 |
} |
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|
122 |
|
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5750
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|
123 |
#endif |
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|
124 |
return 1; |
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diff
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|
125 |
} |
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parents:
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|
126 |
|
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|
127 |
int luaopen_util_net(lua_State* L) { |
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|
128 |
luaL_Reg exports[] = { |
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|
129 |
{ "local_addresses", lc_local_addresses }, |
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|
130 |
{ NULL, NULL } |
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|
131 |
}; |
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parents:
diff
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|
132 |
|
|
6414
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Kim Alvefur <zash@zash.se>
parents:
5810
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|
133 |
lua_newtable(L); |
|
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|
134 |
luaL_register(L, NULL, exports); |
|
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parents:
diff
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|
135 |
return 1; |
|
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parents:
diff
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|
136 |
} |