Annotation of embedaddon/miniupnpd/upnputils.c, revision 1.1.1.2
1.1.1.2 ! misho 1: /* $Id: upnputils.c,v 1.6 2013/02/06 10:50:04 nanard Exp $ */
1.1 misho 2: /* MiniUPnP project
3: * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
1.1.1.2 ! misho 4: * (c) 2006-2013 Thomas Bernard
1.1 misho 5: * This software is subject to the conditions detailed
6: * in the LICENCE file provided within the distribution */
7:
8: #include "config.h"
9:
10: #include <stdio.h>
1.1.1.2 ! misho 11: #include <string.h>
! 12: #include <syslog.h>
! 13: #include <unistd.h>
! 14: #include <fcntl.h>
1.1 misho 15: #include <sys/types.h>
16: #include <sys/socket.h>
17: #include <netinet/in.h>
18: #include <arpa/inet.h>
19: #ifdef AF_LINK
20: #include <net/if_dl.h>
21: #endif
22:
23: #include "upnputils.h"
1.1.1.2 ! misho 24: #include "upnpglobalvars.h"
! 25: #ifdef ENABLE_IPV6
! 26: #include "getroute.h"
! 27: #endif
1.1 misho 28:
29: int
30: sockaddr_to_string(const struct sockaddr * addr, char * str, size_t size)
31: {
32: char buffer[64];
33: unsigned short port = 0;
34: int n = -1;
35:
36: switch(addr->sa_family)
37: {
38: case AF_INET6:
39: inet_ntop(addr->sa_family,
40: &((struct sockaddr_in6 *)addr)->sin6_addr,
41: buffer, sizeof(buffer));
42: port = ntohs(((struct sockaddr_in6 *)addr)->sin6_port);
43: n = snprintf(str, size, "[%s]:%hu", buffer, port);
44: break;
45: case AF_INET:
46: inet_ntop(addr->sa_family,
47: &((struct sockaddr_in *)addr)->sin_addr,
48: buffer, sizeof(buffer));
49: port = ntohs(((struct sockaddr_in *)addr)->sin_port);
50: n = snprintf(str, size, "%s:%hu", buffer, port);
51: break;
52: #ifdef AF_LINK
1.1.1.2 ! misho 53: #if defined(__sun)
! 54: /* solaris does not seem to have link_ntoa */
! 55: /* #define link_ntoa _link_ntoa */
! 56: #define link_ntoa(x) "dummy-link_ntoa"
! 57: #endif
1.1 misho 58: case AF_LINK:
59: {
60: struct sockaddr_dl * sdl = (struct sockaddr_dl *)addr;
61: n = snprintf(str, size, "index=%hu type=%d %s",
62: sdl->sdl_index, sdl->sdl_type,
63: link_ntoa(sdl));
64: }
65: break;
66: #endif
67: default:
68: n = snprintf(str, size, "unknown address family %d", addr->sa_family);
69: #if 0
70: n = snprintf(str, size, "unknown address family %d "
71: "%02x %02x %02x %02x %02x %02x %02x %02x",
72: addr->sa_family,
73: addr->sa_data[0], addr->sa_data[1], (unsigned)addr->sa_data[2], addr->sa_data[3],
74: addr->sa_data[4], addr->sa_data[5], (unsigned)addr->sa_data[6], addr->sa_data[7]);
75: #endif
76: }
77: return n;
78: }
79:
80:
1.1.1.2 ! misho 81: int
! 82: set_non_blocking(int fd)
! 83: {
! 84: int flags = fcntl(fd, F_GETFL);
! 85: if(flags < 0)
! 86: return 0;
! 87: if(fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0)
! 88: return 0;
! 89: return 1;
! 90: }
! 91:
! 92: struct lan_addr_s *
! 93: get_lan_for_peer(const struct sockaddr * peer)
! 94: {
! 95: struct lan_addr_s * lan_addr = NULL;
! 96:
! 97: #ifdef ENABLE_IPV6
! 98: if(peer->sa_family == AF_INET6)
! 99: {
! 100: struct sockaddr_in6 * peer6 = (struct sockaddr_in6 *)peer;
! 101: if(IN6_IS_ADDR_V4MAPPED(&peer6->sin6_addr))
! 102: {
! 103: struct in_addr peer_addr;
! 104: memcpy(&peer_addr, &peer6->sin6_addr.s6_addr[12], 4);
! 105: for(lan_addr = lan_addrs.lh_first;
! 106: lan_addr != NULL;
! 107: lan_addr = lan_addr->list.le_next)
! 108: {
! 109: if( (peer_addr.s_addr & lan_addr->mask.s_addr)
! 110: == (lan_addr->addr.s_addr & lan_addr->mask.s_addr))
! 111: break;
! 112: }
! 113: }
! 114: else
! 115: {
! 116: int index = -1;
! 117: if(get_src_for_route_to(peer, NULL, NULL, &index) < 0)
! 118: return NULL;
! 119: syslog(LOG_DEBUG, "%s looking for LAN interface index=%d",
! 120: "get_lan_for_peer()", index);
! 121: for(lan_addr = lan_addrs.lh_first;
! 122: lan_addr != NULL;
! 123: lan_addr = lan_addr->list.le_next)
! 124: {
! 125: syslog(LOG_DEBUG,
! 126: "ifname=%s index=%u str=%s addr=%08x mask=%08x",
! 127: lan_addr->ifname, lan_addr->index,
! 128: lan_addr->str,
! 129: ntohl(lan_addr->addr.s_addr),
! 130: ntohl(lan_addr->mask.s_addr));
! 131: if(index == (int)lan_addr->index)
! 132: break;
! 133: }
! 134: }
! 135: }
! 136: else if(peer->sa_family == AF_INET)
! 137: {
! 138: #endif
! 139: for(lan_addr = lan_addrs.lh_first;
! 140: lan_addr != NULL;
! 141: lan_addr = lan_addr->list.le_next)
! 142: {
! 143: if( (((const struct sockaddr_in *)peer)->sin_addr.s_addr & lan_addr->mask.s_addr)
! 144: == (lan_addr->addr.s_addr & lan_addr->mask.s_addr))
! 145: break;
! 146: }
! 147: #ifdef ENABLE_IPV6
! 148: }
! 149: #endif
! 150:
! 151: if(lan_addr)
! 152: syslog(LOG_DEBUG, "%s: found in LAN %s %s",
! 153: "get_lan_for_peer()", lan_addr->ifname, lan_addr->str);
! 154: else
! 155: syslog(LOG_DEBUG, "%s: not found !", "get_lan_for_peer()");
! 156: return lan_addr;
! 157: }
1.1 misho 158:
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