int ifc_get_info(const char *name, in_addr_t *addr, int *prefixLength, unsigned *flags)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
if (addr != NULL) {
if(ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) {
*addr = 0;
} else {
*addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr;
}
}
if (prefixLength != NULL) {
if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) {
*prefixLength = 0;
} else {
*prefixLength = ipv4NetmaskToPrefixLength(
((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr);
}
}
if (flags != NULL) {
if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) {
*flags = 0;
} else {
*flags = ifr.ifr_flags;
}
}
return 0;
}
int ifc_get_info(const char *name, in_addr_t *addr, in_addr_t *mask, unsigned *flags)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
if (addr != NULL) {
if(1 || ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) {
*addr = 0;
} else {
*addr = ((struct sockaddr_in*) (void*) &ifr.ifr_addr)->sin_addr.s_addr;
}
}
if (mask != NULL) {
if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) {
*mask = 0;
} else {
*mask = ((struct sockaddr_in*) (void*) &ifr.ifr_addr)->sin_addr.s_addr;
}
}
if (flags != NULL) {
if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) {
*flags = 0;
} else {
*flags = ifr.ifr_flags;
}
}
return 0;
}
int ifc_ccmni_md_cfg(const char *ifname, int md_id)
{
struct ifreq ifr;
int ret = 0;
int ctl_sock = 0;
ifc_init_ifr(ifname, &ifr);
ifr.ifr_ifru.ifru_ivalue = md_id;
ctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
if(ctl_sock < 0){
printerr("ifc_ccmni_md_cfg: create ctl socket failed\n");
return -1;
}
if(ioctl(ctl_sock, SIOCSCCMNICFG, &ifr) < 0) {
printerr("ifc_ccmni_md_configure(ifname=%s, md_id=%d) error:%d(%s)", \
ifname, md_id, errno, strerror(errno));
ret = -1;
} else {
printerr("ifc_ccmni_md_configure(ifname=%s, md_id=%d) OK", ifname, md_id);
}
close(ctl_sock);
return ret;
}
static int ifc_set_flags(const char *name, unsigned set, unsigned clr)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) return -1;
ifr.ifr_flags = (ifr.ifr_flags & (~clr)) | set;
return ioctl(ifc_ctl_sock, SIOCSIFFLAGS, &ifr);
}
int ifc_set_mask(const char *name, in_addr_t mask)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
init_sockaddr_in(&ifr.ifr_addr, mask);
return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr);
}
int ifc_set_addr(const char *name, in_addr_t addr)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
init_sockaddr_in(&ifr.ifr_addr, addr);
return ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr);
}
int ifc_set_hwaddr(const char *name, const void *ptr)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
memcpy(&ifr.ifr_hwaddr.sa_data, ptr, ETH_ALEN);
return ioctl(ifc_ctl_sock, SIOCSIFHWADDR, &ifr);
}
int ifc_set_prefixLength(const char *name, int prefixLength)
{
struct ifreq ifr;
// TODO - support ipv6
if (prefixLength > 32 || prefixLength < 0) return -1;
in_addr_t mask = prefixLengthToIpv4Netmask(prefixLength);
ifc_init_ifr(name, &ifr);
init_sockaddr_in(&ifr.ifr_addr, mask);
return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr);
}
int ifc_set_mask(const char *name, in_addr_t mask)
{
struct ifreq ifr;
int ret;
ifc_init_ifr(name, &ifr);
init_sockaddr_in(&ifr.ifr_addr, mask);
ret = ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr);
if (DBG) printerr("ifc_set_mask(%s, xx) = %d", name, ret);
return ret;
}
int ifc_set_addr(const char *name, in_addr_t addr)
{
struct ifreq ifr;
int ret;
ifc_init_ifr(name, &ifr);
init_sockaddr_in(&ifr.ifr_addr, addr);
ret = ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr);
if (DBG) printerr("ifc_set_addr(%s, xx) = %d", name, ret);
return ret;
}
int ifc_get_ifindex(const char *name, int *if_indexp)
{
int r;
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
r = ioctl(ifc_ctl_sock, SIOCGIFINDEX, &ifr);
if(r < 0) return -1;
*if_indexp = ifr.ifr_ifindex;
return 0;
}
int ifc_get_hwaddr(const char *name, void *ptr)
{
int r;
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
r = ioctl(ifc_ctl_sock, SIOCGIFHWADDR, &ifr);
if(r < 0) return -1;
memcpy(ptr, &ifr.ifr_hwaddr.sa_data, ETH_ALEN);
return 0;
}
int ifc_reset_connections(const char *ifname, const int reset_mask)
{
#ifdef HAVE_ANDROID_OS
int result = 0, success;
in_addr_t myaddr = 0;
struct ifreq ifr;
struct in6_ifreq ifr6;
int ctl_sock = -1;
if (reset_mask & RESET_IPV4_ADDRESSES) {
/* IPv4. Clear connections on the IP address. */
ctl_sock = socket(AF_INET, SOCK_DGRAM, 0);
if (ctl_sock >= 0) {
if (!(reset_mask & RESET_IGNORE_INTERFACE_ADDRESS)) {
ifc_get_info(ifname, &myaddr, NULL, NULL);
}
ifc_init_ifr(ifname, &ifr);
init_sockaddr_in(&ifr.ifr_addr, myaddr);
result = ioctl(ctl_sock, SIOCKILLADDR, &ifr);
close(ctl_sock);
} else {
result = -1;
}
}
if (reset_mask & RESET_IPV6_ADDRESSES) {
/*
* IPv6. On Linux, when an interface goes down it loses all its IPv6
* addresses, so we don't know which connections belonged to that interface
* So we clear all unused IPv6 connections on the device by specifying an
* empty IPv6 address.
*/
ctl_sock = socket(AF_INET6, SOCK_DGRAM, 0);
// This implicitly specifies an address of ::, i.e., kill all IPv6 sockets.
memset(&ifr6, 0, sizeof(ifr6));
if (ctl_sock >= 0) {
success = ioctl(ctl_sock, SIOCKILLADDR, &ifr6);
if (result == 0) {
result = success;
}
close(ctl_sock);
} else {
result = -1;
}
}
return result;
#else
return 0;
#endif
}
int ifc_get_addr(const char *name, in_addr_t *addr)
{
struct ifreq ifr;
int ret = 0;
ifc_init_ifr(name, &ifr);
if (addr != NULL) {
ret = ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr);
if (ret < 0) {
*addr = 0;
} else {
*addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr;
}
}
return ret;
}
int ifc_is_up(const char *name, unsigned *isup)
{
struct ifreq ifr;
ifc_init_ifr(name, &ifr);
if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) {
printerr("ifc_is_up get flags error:%d(%s)", errno, strerror(errno));
return -1;
}
if(ifr.ifr_flags & IFF_UP)
*isup = 1;
else
*isup = 0;
return 0;
}
int ifc_reset_connections(const char *ifname)
{
#ifdef HAVE_ANDROID_OS
int result;
in_addr_t myaddr;
struct ifreq ifr;
ifc_init();
ifc_get_info(ifname, &myaddr, NULL, NULL);
ifc_init_ifr(ifname, &ifr);
init_sockaddr_in(&ifr.ifr_addr, myaddr);
result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr);
ifc_close();
return result;
#else
return 0;
#endif
}
