81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
/* $Id: upnputils.c,v 1.4 2012/02/06 16:21:24 nanard Exp $ */
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/* MiniUPnP project
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* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
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* (c) 2006-2012 Thomas Bernard
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* This software is subject to the conditions detailed
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* in the LICENCE file provided within the distribution */
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#include "config.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#ifdef AF_LINK
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#include <net/if_dl.h>
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#endif
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#include "upnputils.h"
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int
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sockaddr_to_string(const struct sockaddr * addr, char * str, size_t size)
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{
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char buffer[64];
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unsigned short port = 0;
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int n = -1;
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switch(addr->sa_family)
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{
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case AF_INET6:
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inet_ntop(addr->sa_family,
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&((struct sockaddr_in6 *)addr)->sin6_addr,
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buffer, sizeof(buffer));
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port = ntohs(((struct sockaddr_in6 *)addr)->sin6_port);
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n = snprintf(str, size, "[%s]:%hu", buffer, port);
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break;
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case AF_INET:
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inet_ntop(addr->sa_family,
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&((struct sockaddr_in *)addr)->sin_addr,
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buffer, sizeof(buffer));
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port = ntohs(((struct sockaddr_in *)addr)->sin_port);
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n = snprintf(str, size, "%s:%hu", buffer, port);
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break;
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#ifdef AF_LINK
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case AF_LINK:
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{
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struct sockaddr_dl * sdl = (struct sockaddr_dl *)addr;
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n = snprintf(str, size, "index=%hu type=%d %s",
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sdl->sdl_index, sdl->sdl_type,
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link_ntoa(sdl));
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}
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break;
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#endif
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default:
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n = snprintf(str, size, "unknown address family %d", addr->sa_family);
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#if 0
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n = snprintf(str, size, "unknown address family %d "
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"%02x %02x %02x %02x %02x %02x %02x %02x",
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addr->sa_family,
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addr->sa_data[0], addr->sa_data[1], (unsigned)addr->sa_data[2], addr->sa_data[3],
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addr->sa_data[4], addr->sa_data[5], (unsigned)addr->sa_data[6], addr->sa_data[7]);
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#endif
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}
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return n;
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}
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int
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set_non_blocking(int fd)
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{
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int flags = fcntl(fd, F_GETFL);
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if(flags < 0)
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return 0;
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if(fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0)
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return 0;
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return 1;
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}
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