int
ifconfig_get_groups(ifconfig_handle_t *h, const char *name,
struct ifgroupreq *ifgr)
{
int len;
memset(ifgr, 0, sizeof(*ifgr));
strlcpy(ifgr->ifgr_name, name, IFNAMSIZ);
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFGROUP, ifgr) == -1) {
if ((h->error.errcode == EINVAL) ||
(h->error.errcode == ENOTTY)) {
return (0);
} else {
return (-1);
}
}
len = ifgr->ifgr_len;
ifgr->ifgr_groups = (struct ifg_req *)malloc(len);
if (ifgr->ifgr_groups == NULL) {
return (1);
}
bzero(ifgr->ifgr_groups, len);
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFGROUP, ifgr) == -1) {
return (-1);
}
return (0);
}
int
ifconfig_get_ifstatus(ifconfig_handle_t *h, const char *name,
struct ifstat *ifs)
{
strlcpy(ifs->ifs_name, name, sizeof(ifs->ifs_name));
return (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFSTATUS, ifs));
}
int
ifconfig_create_interface(ifconfig_handle_t *h, const char *name, char **ifname)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
/*
* TODO:
* Insert special snowflake handling here. See GitHub issue #12 for details.
* In the meantime, hard-nosupport interfaces that need special handling.
*/
if ((strncmp(name, "wlan",
strlen("wlan")) == 0) ||
(strncmp(name, "vlan",
strlen("vlan")) == 0) ||
(strncmp(name, "vxlan",
strlen("vxlan")) == 0)) {
h->error.errtype = OTHER;
h->error.errcode = ENOSYS;
return (-1);
}
/* No special handling for this interface type. */
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCIFCREATE2, &ifr) < 0) {
return (-1);
}
*ifname = strdup(ifr.ifr_name);
return (0);
}
int
ifconfig_set_name(ifconfig_handle_t *h, const char *name, const char *newname)
{
struct ifreq ifr;
char *tmpname;
memset(&ifr, 0, sizeof(ifr));
tmpname = strdup(newname);
if (tmpname == NULL) {
h->error.errtype = OTHER;
h->error.errcode = ENOMEM;
return (-1);
}
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_data = tmpname;
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFNAME,
&ifr) != 0) {
free(tmpname);
return (-1);
}
free(tmpname);
return (0);
}
int
ifconfig_create_interface_vlan(ifconfig_handle_t *h, const char *name,
char **ifname, const char *vlandev, const unsigned short vlantag)
{
struct ifreq ifr;
struct vlanreq params;
if ((vlantag == NOTAG) || (vlandev[0] == '\0')) {
// TODO: Add proper error tracking here
return (-1);
}
bzero(¶ms, sizeof(params));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
params.vlr_tag = vlantag;
(void)strlcpy(params.vlr_parent, vlandev, sizeof(params.vlr_parent));
ifr.ifr_data = (caddr_t)¶ms;
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCIFCREATE2, &ifr) < 0) {
// TODO: Add proper error tracking here
return (-1);
}
*ifname = strdup(ifr.ifr_name);
return (0);
}
int
ifconfig_destroy_interface(ifconfig_handle_t *h, const char *name)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCIFDESTROY, &ifr) < 0) {
return (-1);
}
return (0);
}
int
ifconfig_get_description(ifconfig_handle_t *h, const char *name,
char **description)
{
struct ifreq ifr;
char *descr;
size_t descrlen;
descr = NULL;
descrlen = 64;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
for (;;) {
if ((descr = reallocf(descr, descrlen)) == NULL) {
h->error.errtype = OTHER;
h->error.errcode = ENOMEM;
return (-1);
}
ifr.ifr_buffer.buffer = descr;
ifr.ifr_buffer.length = descrlen;
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFDESCR, &ifr) != 0) {
free(descr);
return (-1);
}
if (ifr.ifr_buffer.buffer == descr) {
if (strlen(descr) > 0) {
*description = strdup(descr);
free(descr);
if (description == NULL) {
h->error.errtype = OTHER;
h->error.errcode = ENOMEM;
return (-1);
}
return (0);
}
} else if (ifr.ifr_buffer.length > descrlen) {
descrlen = ifr.ifr_buffer.length;
continue;
}
break;
}
free(descr);
h->error.errtype = OTHER;
h->error.errcode = 0;
return (-1);
}
static bool
isnd6defif(ifconfig_handle_t *h, const char *name)
{
struct in6_ndifreq ndifreq;
unsigned int ifindex;
memset(&ndifreq, 0, sizeof(ndifreq));
strlcpy(ndifreq.ifname, name, sizeof(ndifreq.ifname));
ifindex = if_nametoindex(ndifreq.ifname);
if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGDEFIFACE_IN6, &ndifreq) < 0) {
return (false);
}
h->error.errtype = OK;
return (ndifreq.ifindex == ifindex);
}
int
ifconfig_unset_description(ifconfig_handle_t *h, const char *name)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_buffer.length = 0;
ifr.ifr_buffer.buffer = NULL;
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFDESCR, &ifr) < 0) {
return (-1);
}
return (0);
}
int
ifconfig_get_fib(ifconfig_handle_t *h, const char *name, int *fib)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFFIB, &ifr) == -1) {
return (-1);
}
*fib = ifr.ifr_fib;
return (0);
}
int
ifconfig_get_metric(ifconfig_handle_t *h, const char *name, int *metric)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFMETRIC, &ifr) == -1) {
return (-1);
}
*metric = ifr.ifr_metric;
return (0);
}
int
ifconfig_set_mtu(ifconfig_handle_t *h, const char *name, const int mtu)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_mtu = mtu;
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFMTU, &ifr) < 0) {
return (-1);
}
return (0);
}
int
ifconfig_get_capability(ifconfig_handle_t *h, const char *name,
struct ifconfig_capabilities *capability)
{
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCGIFCAP, &ifr) < 0) {
return (-1);
}
capability->curcap = ifr.ifr_curcap;
capability->reqcap = ifr.ifr_reqcap;
return (0);
}
int
ifconfig_get_nd6(ifconfig_handle_t *h, const char *name,
struct in6_ndireq *nd)
{
memset(nd, 0, sizeof(*nd));
strlcpy(nd->ifname, name, sizeof(nd->ifname));
if (ifconfig_ioctlwrap(h, AF_INET6, SIOCGIFINFO_IN6, nd) == -1) {
return (-1);
}
if (isnd6defif(h, name)) {
nd->ndi.flags |= ND6_IFF_DEFAULTIF;
} else if (h->error.errtype != OK) {
return (-1);
}
return (0);
}
int
ifconfig_set_vlantag(ifconfig_handle_t *h, const char *name,
const char *vlandev, const unsigned short vlantag)
{
struct ifreq ifr;
struct vlanreq params;
bzero(¶ms, sizeof(params));
params.vlr_tag = vlantag;
strlcpy(params.vlr_parent, vlandev, sizeof(params.vlr_parent));
ifr.ifr_data = (caddr_t)¶ms;
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSETVLAN, &ifr) == -1) {
return (-1);
}
return (0);
}
int
ifconfig_set_capability(ifconfig_handle_t *h, const char *name,
const int capability)
{
struct ifreq ifr;
struct ifconfig_capabilities ifcap;
int flags, value;
memset(&ifr, 0, sizeof(ifr));
if (ifconfig_get_capability(h, name,
&ifcap) != 0) {
return (-1);
}
value = capability;
flags = ifcap.curcap;
if (value < 0) {
value = -value;
flags &= ~value;
} else {
flags |= value;
}
flags &= ifcap.reqcap;
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
/*
* TODO: Verify that it's safe to not have ifr.ifr_curcap
* set for this request.
*/
ifr.ifr_reqcap = flags;
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFCAP,
&ifr) < 0) {
return (-1);
}
return (0);
}
int
ifconfig_set_description(ifconfig_handle_t *h, const char *name,
const char *newdescription)
{
struct ifreq ifr;
int desclen;
memset(&ifr, 0, sizeof(ifr));
desclen = strlen(newdescription);
/*
* Unset description if the new description is 0 characters long.
* TODO: Decide whether this should be an error condition instead.
*/
if (desclen == 0) {
return (ifconfig_unset_description(h, name));
}
(void)strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
ifr.ifr_buffer.length = desclen + 1;
ifr.ifr_buffer.buffer = strdup(newdescription);
if (ifr.ifr_buffer.buffer == NULL) {
h->error.errtype = OTHER;
h->error.errcode = ENOMEM;
return (-1);
}
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFDESCR,
&ifr) != 0) {
free(ifr.ifr_buffer.buffer);
return (-1);
}
free(ifr.ifr_buffer.buffer);
return (0);
}