/****************************************************************************
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)));
}
/****************************************************************************
load the list of network interfaces
****************************************************************************/
void load_interfaces(void)
{
const char **ptr;
int i;
struct iface_struct ifaces[MAX_INTERFACES];
ptr = lp_interfaces();
allones_ip = *interpret_addr2("255.255.255.255");
loopback_ip = *interpret_addr2("127.0.0.1");
SAFE_FREE(probed_ifaces);
/* dump the current interfaces if any */
while (local_interfaces) {
struct interface *iface = local_interfaces;
DLIST_REMOVE(local_interfaces, local_interfaces);
ZERO_STRUCTPN(iface);
SAFE_FREE(iface);
}
/* probe the kernel for interfaces */
total_probed = get_interfaces(ifaces, MAX_INTERFACES);
if (total_probed > 0) {
probed_ifaces = memdup(ifaces, sizeof(ifaces[0])*total_probed);
}
/* if we don't have a interfaces line then use all broadcast capable
interfaces except loopback */
if (!ptr || !*ptr || !**ptr) {
if (total_probed <= 0) {
DEBUG(0,("ERROR: Could not determine network interfaces, you must use a interfaces config line\n"));
exit(1);
}
for (i=0;i<total_probed;i++) {
if (probed_ifaces[i].netmask.s_addr != allones_ip.s_addr &&
probed_ifaces[i].ip.s_addr != loopback_ip.s_addr) {
add_interface(probed_ifaces[i].ip,
probed_ifaces[i].netmask);
}
}
return;
}
if (ptr) {
while (*ptr) {
char *ptr_cpy = strdup(*ptr);
if (ptr_cpy) {
interpret_interface(ptr_cpy);
free(ptr_cpy);
}
ptr++;
}
}
if (!local_interfaces) {
DEBUG(0,("WARNING: no network interfaces found\n"));
}
}
/****************************************************************************
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));
}
void gfree_interfaces(void)
{
while (local_interfaces) {
struct interface *iface = local_interfaces;
DLIST_REMOVE(local_interfaces, local_interfaces);
ZERO_STRUCTPN(iface);
SAFE_FREE(iface);
}
SAFE_FREE(probed_ifaces);
}
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) ));
}
void message_register(int msg_type,
void (*fn)(int msg_type, pid_t pid, void *buf, size_t len))
{
struct dispatch_fns *dfn;
dfn = (struct dispatch_fns *)malloc(sizeof(*dfn));
if (dfn != NULL) {
ZERO_STRUCTPN(dfn);
dfn->msg_type = msg_type;
dfn->fn = fn;
DLIST_ADD(dispatch_fns, dfn);
}
else {
DEBUG(0,("message_register: Not enough memory. malloc failed!\n"));
}
}
/****************************************************************************
add an interface to the linked list of interfaces
****************************************************************************/
static void add_interface(TALLOC_CTX *mem_ctx, const struct iface_struct *ifs, struct interface **interfaces,
bool enable_ipv6)
{
char addr[INET6_ADDRSTRLEN];
struct interface *iface;
if (iface_list_find(*interfaces, (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;
}
if (!enable_ipv6 && ifs->ip.ss_family != AF_INET) {
return;
}
iface = talloc(*interfaces == NULL ? mem_ctx : *interfaces, struct interface);
if (iface == NULL)
return;
ZERO_STRUCTPN(iface);
iface->name = talloc_strdup(iface, 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;
/* keep string versions too, to avoid people tripping over the implied
static in inet_ntoa() */
print_sockaddr(addr, sizeof(addr), &iface->ip);
DEBUG(4,("added interface %s ip=%s ",
iface->name, addr));
iface->ip_s = talloc_strdup(iface, addr);
print_sockaddr(addr, sizeof(addr),
&iface->bcast);
DEBUG(4,("bcast=%s ", addr));
iface->bcast_s = talloc_strdup(iface, addr);
print_sockaddr(addr, sizeof(addr),
&iface->netmask);
DEBUG(4,("netmask=%s\n", addr));
iface->nmask_s = talloc_strdup(iface, addr);
/*
this needs to be a ADD_END, as some tests (such as the
spoolss notify test) depend on the interfaces ordering
*/
DLIST_ADD_END(*interfaces, iface, NULL);
}
