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* Add support for other operating systems (kFreeBSD, FreeBSD, and OSX for now).

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* Switch to autoconf from genconfig.sh.
This commit is contained in:
Justin Maggard
2011-09-16 23:39:58 +00:00
parent 715af3519b
commit 773e1f6566
40 changed files with 1952 additions and 533 deletions
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203
getifaddr.c
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@ -43,19 +43,82 @@
#include <sys/sockio.h>
#endif
#include "config.h"
#if HAVE_GETIFADDRS
#include <ifaddrs.h>
#ifdef __linux__
#ifndef AF_LINK
#define AF_LINK AF_INET
#endif
#else
#include <net/if_dl.h>
#endif
#endif
#include "getifaddr.h"
#include "log.h"
static uint32_t
get_netmask(struct sockaddr_in *netmask)
{
uint32_t mask;
int i;
if (!netmask)
return 0;
mask = ntohl(netmask->sin_addr.s_addr);
for (i = 0; i < 32; i++)
{
if ((mask >> i) & 1)
break;
}
mask = 32 - i;
return mask;
}
int
getifaddr(const char * ifname, char * buf, int len)
{
/* SIOCGIFADDR struct ifreq * */
uint32_t mask = 0;
int i;
#if HAVE_GETIFADDRS
struct ifaddrs *ifap, *p;
struct sockaddr_in *addr_in;
if( getifaddrs(&ifap) != 0 )
{
DPRINTF(E_ERROR, L_GENERAL, "getifaddrs(): %s\n", strerror(errno));
return -1;
}
for( p = ifap; p != NULL; p = p->ifa_next )
{
if( p->ifa_addr->sa_family == AF_INET )
{
if( strcmp(p->ifa_name, ifname) != 0 )
continue;
addr_in = (struct sockaddr_in *)p->ifa_addr;
if(!inet_ntop(AF_INET, &addr_in->sin_addr, buf, len))
{
DPRINTF(E_ERROR, L_GENERAL, "inet_ntop(): %s\n", strerror(errno));
break;
}
addr_in = (struct sockaddr_in *)p->ifa_netmask;
mask = get_netmask(addr_in);
break;
}
}
freeifaddrs(ifap);
if( !p )
{
DPRINTF(E_ERROR, L_GENERAL, "Network interface %s not found\n", ifname);
return -1;
}
#else
int s;
struct ifreq ifr;
int ifrlen;
struct sockaddr_in * addr;
uint32_t mask;
int i;
ifrlen = sizeof(ifr);
s = socket(PF_INET, SOCK_DGRAM, 0);
@ -81,22 +144,17 @@ getifaddr(const char * ifname, char * buf, int len)
if(ioctl(s, SIOCGIFNETMASK, &ifr, &ifrlen) == 0)
{
addr = (struct sockaddr_in *)&ifr.ifr_netmask;
mask = ntohl(addr->sin_addr.s_addr);
for (i = 0; i < 32; i++)
{
if ((mask >> i) & 1)
break;
}
mask = 32 - i;
if (mask)
{
i = strlen(buf);
snprintf(buf+i, len-i, "/%u", mask);
}
mask = get_netmask(addr);
}
else
DPRINTF(E_ERROR, L_GENERAL, "ioctl(s, SIOCGIFNETMASK, ...): %s\n", strerror(errno));
close(s);
#endif
if (mask)
{
i = strlen(buf);
snprintf(buf+i, len-i, "/%u", mask);
}
return 0;
}
@ -104,12 +162,42 @@ int
getsysaddr(char * buf, int len)
{
int i;
uint32_t mask = 0;
int ret = -1;
#if HAVE_GETIFADDRS
struct ifaddrs *ifap, *p;
struct sockaddr_in *addr_in;
uint8_t a;
if( getifaddrs(&ifap) != 0 )
{
DPRINTF(E_ERROR, L_GENERAL, "getifaddrs(): %s\n", strerror(errno));
return -1;
}
for( p = ifap; p != NULL; p = p->ifa_next )
{
if (p->ifa_addr->sa_family == AF_INET)
{
addr_in = (struct sockaddr_in *)p->ifa_addr;
a = (htonl(addr_in->sin_addr.s_addr) >> 0x18) & 0xFF;
if( a == 127 )
continue;
if(!inet_ntop(AF_INET, &addr_in->sin_addr, buf, len))
{
DPRINTF(E_ERROR, L_GENERAL, "inet_ntop(): %s\n", strerror(errno));
break;
}
addr_in = (struct sockaddr_in *)p->ifa_netmask;
mask = get_netmask(addr_in);
ret = 0;
break;
}
}
freeifaddrs(ifap);
#else
int s = socket(PF_INET, SOCK_STREAM, 0);
struct sockaddr_in addr;
struct ifreq ifr;
uint32_t mask;
int ret = -1;
for (i=1; i > 0; i++)
{
ifr.ifr_ifindex = i;
@ -128,24 +216,19 @@ getsysaddr(char * buf, int len)
close(s);
break;
}
ret = 0;
memcpy(&addr, &ifr.ifr_netmask, sizeof(addr));
mask = ntohl(addr.sin_addr.s_addr);
for (i = 0; i < 32; i++)
{
if ((mask >> i) & 1)
break;
}
mask = 32 - i;
if (mask)
{
i = strlen(buf);
snprintf(buf+i, len-i, "/%u", mask);
}
mask = get_netmask(&addr);
ret = 0;
break;
}
close(s);
#endif
if (mask)
{
i = strlen(buf);
snprintf(buf+i, len-i, "/%u", mask);
}
return(ret);
}
@ -153,11 +236,55 @@ getsysaddr(char * buf, int len)
int
getsyshwaddr(char * buf, int len)
{
struct if_nameindex *ifaces, *if_idx;
unsigned char mac[6];
int ret = -1;
#if HAVE_GETIFADDRS
struct ifaddrs *ifap, *p;
struct sockaddr_in *addr_in;
uint8_t a;
if( getifaddrs(&ifap) != 0 )
{
DPRINTF(E_ERROR, L_GENERAL, "getifaddrs(): %s\n", strerror(errno));
return -1;
}
for( p = ifap; p != NULL; p = p->ifa_next )
{
if (p->ifa_addr->sa_family == AF_LINK)
{
addr_in = (struct sockaddr_in *)p->ifa_addr;
a = (htonl(addr_in->sin_addr.s_addr) >> 0x18) & 0xFF;
if( a == 127 )
continue;
#ifdef __linux__
struct ifreq ifr;
int fd;
fd = socket(AF_INET, SOCK_DGRAM, 0);
if( fd < 0 )
continue;
strncpy(ifr.ifr_name, p->ifa_name, IFNAMSIZ);
if( ioctl(fd, SIOCGIFHWADDR, &ifr) < 0 )
{
close(fd);
continue;
}
memcpy(mac, ifr.ifr_hwaddr.sa_data, 6);
#else
struct sockaddr_dl *sdl;
sdl = (struct sockaddr_dl*)p->ifa_addr;
memcpy(mac, LLADDR(sdl), sdl->sdl_alen);
#endif
if( MACADDR_IS_ZERO(mac) )
continue;
ret = 0;
break;
}
}
freeifaddrs(ifap);
#else
struct if_nameindex *ifaces, *if_idx;
struct ifreq ifr;
int fd;
int ret = -1;
memset(&mac, '\0', sizeof(mac));
/* Get the spatially unique node identifier */
@ -180,25 +307,21 @@ getsyshwaddr(char * buf, int len)
continue;
if( MACADDR_IS_ZERO(ifr.ifr_hwaddr.sa_data) )
continue;
memcpy(mac, ifr.ifr_hwaddr.sa_data, 6);
ret = 0;
break;
}
if_freenameindex(ifaces);
close(fd);
#endif
if(ret == 0)
{
if(len > 12)
{
memmove(mac, ifr.ifr_hwaddr.sa_data, 6);
sprintf(buf, "%02x%02x%02x%02x%02x%02x",
mac[0]&0xFF, mac[1]&0xFF, mac[2]&0xFF,
mac[3]&0xFF, mac[4]&0xFF, mac[5]&0xFF);
}
else if(len == 6)
{
memmove(buf, ifr.ifr_hwaddr.sa_data, 6);
}
memmove(buf, mac, 6);
}
return ret;
}