/****************************************************************************
add an interface to the linked list of interfaces
****************************************************************************/
static void add_interface(TALLOC_CTX *mem_ctx, struct in_addr ip, struct in_addr nmask, struct interface **interfaces)
{
struct interface *iface;
struct in_addr bcast;
if (iface_find(*interfaces, ip, false)) {
DEBUG(3,("not adding duplicate interface %s\n",inet_ntoa(ip)));
return;
}
iface = talloc(*interfaces == NULL ? mem_ctx : *interfaces, struct interface);
if (iface == NULL)
return;
ZERO_STRUCTPN(iface);
iface->ip = ip;
iface->nmask = nmask;
bcast.s_addr = MKBCADDR(iface->ip.s_addr, iface->nmask.s_addr);
/* keep string versions too, to avoid people tripping over the implied
static in inet_ntoa() */
iface->ip_s = talloc_strdup(iface, inet_ntoa(iface->ip));
iface->nmask_s = talloc_strdup(iface, inet_ntoa(iface->nmask));
if (nmask.s_addr != ~0) {
iface->bcast_s = talloc_strdup(iface, inet_ntoa(bcast));
}
DLIST_ADD_END(*interfaces, iface, struct interface *);
DEBUG(3,("added interface ip=%s nmask=%s\n", iface->ip_s, iface->nmask_s));
}
/****************************************************************************
add an interface to the linked list of interfaces
****************************************************************************/
static void add_interface(struct in_addr ip, struct in_addr nmask)
{
struct interface *iface;
if (iface_find(ip, False)) {
DEBUG(3,("not adding duplicate interface %s\n",inet_ntoa(ip)));
return;
}
#if !defined(__s390__)
if (ip_equal(nmask, allones_ip)) {
DEBUG(3,("not adding non-broadcast interface %s\n",inet_ntoa(ip)));
return;
}
#endif
iface = SMB_MALLOC_P(struct interface);
if (!iface) return;
ZERO_STRUCTPN(iface);
iface->ip = ip;
iface->nmask = nmask;
iface->bcast.s_addr = MKBCADDR(iface->ip.s_addr, iface->nmask.s_addr);
DLIST_ADD(local_interfaces, iface);
DEBUG(2,("added interface ip=%s ",inet_ntoa(iface->ip)));
DEBUG(2,("bcast=%s ",inet_ntoa(iface->bcast)));
DEBUG(2,("nmask=%s\n",inet_ntoa(iface->nmask)));
}
static void set_hostname(char *host)
{
const struct iflist *ifl = iface_find(host);
if (ifl == NULL) {
yell("no such hostname [%s]!", host);
} else if (local_host_name && !strcmp(local_host_name, ifl->ifi_host)) {
bitchsay("%s is already my hostname, yo.", local_host_name);
} else {
sa_addr_t *addr;
sa_rc_t ret;
malloc_strcpy(&local_host_name, ifl->ifi_host);
sa_addr_create(&addr);
ret = sa_addr_s2a(addr, ifl->ifi_addr, ifl->ifi_len);
if (ret != SA_OK) {
sa_addr_destroy(addr);
bitchsay("couldn't set local hostname: %s", sa_error(ret));
} else {
bitchsay("local host name is now %s", local_host_name);
if (local_host_addr)
sa_addr_destroy(local_host_addr);
local_host_addr = addr;
t_parse_command("RECONNECT", NULL);
}
}
}
/**
return true if an IP is one one of our local networks
*/
bool iface_is_local(struct interface *ifaces, const char *dest)
{
struct in_addr ip;
ip.s_addr = interpret_addr(dest);
if (iface_find(ifaces, ip, true)) {
return true;
}
return false;
}
/**
return the local IP address that best matches a destination IP, or
our first interface if none match
*/
const char *iface_best_ip(struct interface *ifaces, const char *dest)
{
struct interface *iface;
struct in_addr ip;
ip.s_addr = interpret_addr(dest);
iface = iface_find(ifaces, ip, true);
if (iface) {
return iface->ip_s;
}
return iface_n_ip(ifaces, 0);
}
static void add_interface(const struct iface_struct *ifs)
{
char addr[INET6_ADDRSTRLEN];
struct interface *iface;
if (iface_find((const struct sockaddr *)&ifs->ip, False)) {
DEBUG(3,("add_interface: not adding duplicate interface %s\n",
print_sockaddr(addr, sizeof(addr), &ifs->ip) ));
return;
}
if (!(ifs->flags & (IFF_BROADCAST|IFF_LOOPBACK))) {
DEBUG(3,("not adding non-broadcast interface %s\n",
ifs->name ));
return;
}
iface = SMB_MALLOC_P(struct interface);
if (!iface) {
return;
}
ZERO_STRUCTPN(iface);
iface->name = SMB_STRDUP(ifs->name);
if (!iface->name) {
SAFE_FREE(iface);
return;
}
iface->flags = ifs->flags;
iface->ip = ifs->ip;
iface->netmask = ifs->netmask;
iface->bcast = ifs->bcast;
DLIST_ADD(local_interfaces, iface);
DEBUG(2,("added interface %s ip=%s ",
iface->name,
print_sockaddr(addr, sizeof(addr), &iface->ip) ));
DEBUG(2,("bcast=%s ",
print_sockaddr(addr, sizeof(addr),
&iface->bcast) ));
DEBUG(2,("netmask=%s\n",
print_sockaddr(addr, sizeof(addr),
&iface->netmask) ));
}
const struct sockaddr_storage *iface_ip(const struct sockaddr *ip)
{
struct interface *i = iface_find(ip, true);
if (i) {
return &i->ip;
}
/* Search for the first interface with
* matching address family. */
for (i=local_interfaces;i;i=i->next) {
if (i->ip.ss_family == ip->sa_family) {
return &i->ip;
}
}
return NULL;
}
/*
return True if a IP is directly reachable on one of our interfaces
*/
BOOL iface_local(struct in_addr ip)
{
return iface_find(ip, True) ? True : False;
}
struct in_addr *iface_ip(struct in_addr ip)
{
struct interface *i = iface_find(ip, True);
return(i ? &i->ip : &local_interfaces->ip);
}
struct in_addr *iface_bcast(struct in_addr ip)
{
struct interface *i = iface_find(ip, True);
return(i ? &i->bcast : &local_interfaces->bcast);
}
bool iface_local(const struct sockaddr *ip)
{
return iface_find(ip, true) ? true : false;
}
