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#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/if_arp.h>
#include <ifaddrs.h>
#include "dev.h"
#include "str.h"
#include "sock.h"
#include "die.h"
#include "link.h"
#include "built_in.h"
int device_ifindex(const char *ifname)
{
int ret, sock, index;
struct ifreq ifr;
if (!strncmp("any", ifname, strlen("any")))
return 0;
sock = af_socket(AF_INET);
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFINDEX, &ifr);
if (unlikely(ret))
panic("Cannot get ifindex from device!\n");
index = ifr.ifr_ifindex;
close(sock);
return index;
}
int device_type(const char *ifname)
{
int ret, sock, type;
struct ifreq ifr;
if (!strncmp("any", ifname, strlen("any")))
return ARPHRD_ETHER;
sock = af_socket(AF_INET);
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFHWADDR, &ifr);
if (unlikely(ret))
panic("Cannot get iftype from device!\n");
/* dev->type */
type = ifr.ifr_hwaddr.sa_family;
close(sock);
return type;
}
static int __device_address6(const char *ifname, struct sockaddr_storage *ss)
{
int ret, family, found = -EINVAL;
struct ifaddrs *ifaddr, *ifa;
ret = getifaddrs(&ifaddr);
if (unlikely(ret < 0))
panic("Cannot get device addresses for IPv6!\n");
for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
family = ifa->ifa_addr->sa_family;
if (family != AF_INET6)
continue;
if (strcmp(ifa->ifa_name, ifname))
continue;
memcpy(ss, ifa->ifa_addr, sizeof(*ss));
found = 0;
break;
}
freeifaddrs(ifaddr);
return found;
}
int device_address(const char *ifname, int af, struct sockaddr_storage *ss)
{
int ret, sock;
struct ifreq ifr;
if (unlikely(!ss))
return -EINVAL;
if (!strncmp("any", ifname, strlen("any")))
return -EINVAL;
if (af == AF_INET6)
return __device_address6(ifname, ss);
sock = af_socket(af);
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ifr.ifr_addr.sa_family = af;
ret = ioctl(sock, SIOCGIFADDR, &ifr);
if (likely(!ret))
memcpy(ss, &ifr.ifr_addr, sizeof(ifr.ifr_addr));
close(sock);
return ret;
}
size_t device_mtu(const char *ifname)
{
size_t mtu = 0;
int ret, sock;
struct ifreq ifr;
sock = af_socket(AF_INET);
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFMTU, &ifr);
if (likely(!ret))
mtu = ifr.ifr_mtu;
close(sock);
return mtu;
}
short device_get_flags(const char *ifname)
{
short flags = 0;
int ret, sock;
struct ifreq ifr;
sock = af_socket(AF_INET);
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
if (likely(!ret))
flags = ifr.ifr_flags;
close(sock);
return flags;
}
void device_set_flags(const char *ifname, const short flags)
{
int ret, sock;
struct ifreq ifr;
sock = af_socket(AF_INET);
memset(&ifr, 0, sizeof(ifr));
strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
ifr.ifr_flags = flags;
ret = ioctl(sock, SIOCSIFFLAGS, &ifr);
if (unlikely(ret < 0))
panic("Cannot set NIC flags!\n");
close(sock);
}
int device_up_and_running(const char *ifname)
{
if (!ifname)
return -EINVAL;
if (!strncmp("any", ifname, strlen("any")))
return 1;
return (device_get_flags(ifname) &
(IFF_UP | IFF_RUNNING)) ==
(IFF_UP | IFF_RUNNING);
}
u32 device_bitrate(const char *ifname)
{
u32 scopper, swireless;
scopper = ethtool_bitrate(ifname);
swireless = wireless_bitrate(ifname);
return scopper ? : swireless;
}
short device_enter_promiscuous_mode(const char *ifname)
{
short ifflags;
if (!strncmp("any", ifname, strlen("any")))
return 0;
ifflags = device_get_flags(ifname);
device_set_flags(ifname, ifflags | IFF_PROMISC);
return ifflags;
}
void device_leave_promiscuous_mode(const char *ifname, short oldflags)
{
if (!strncmp("any", ifname, strlen("any")))
return;
device_set_flags(ifname, oldflags);
}
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