lagertonne/ifupdown-ng
1
0
Fork 0
Code Issues Pull requests Projects Releases 4 Wiki Activity

interface: add lif_interface_finalize() which rewrites addresses as CIDR when an interface stanza ends

Browse source
This commit is contained in:
Ariadne Conill 2020-12-02 11:38:39 -07:00
parent 6da55d9299
commit f671e2d410
3 changed files with 56 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

52
libifupdown/interface.c
View file

@ -84,6 +84,19 @@ count_set_bits(const char *netmask)
return r;
}
static inline size_t
determine_interface_netmask(const struct lif_interface *iface, const struct lif_address *addr)
{
/* if netmask is not set, default to /24 or /64, ifupdown does so too */
size_t netmask = addr->domain == AF_INET6 ? 64 : 24;
struct lif_dict_entry *entry = lif_dict_find(&iface->vars, "netmask");
if (entry != NULL)
netmask = count_set_bits(entry->data);
return netmask;
}
bool
lif_address_format_cidr(const struct lif_interface *iface, struct lif_dict_entry *entry, char *buf, size_t buflen)
{
@ -91,14 +104,7 @@ lif_address_format_cidr(const struct lif_interface *iface, struct lif_dict_entry
size_t orig_netmask = addr->netmask;
if (!addr->netmask)
{
/* if netmask is not set, default to 255.255.255.0, ifupdown does so too */
addr->netmask = addr->domain == AF_INET6 ? 64 : 24;
struct lif_dict_entry *entry = lif_dict_find(&iface->vars, "netmask");
if (entry != NULL)
addr->netmask = count_set_bits(entry->data);
}
addr->netmask = determine_interface_netmask(iface, addr);
if (!lif_address_unparse(addr, buf, buflen, true))
{
@ -213,6 +219,36 @@ lif_interface_use_executor(struct lif_interface *interface, const char *executor
lif_dict_add(&interface->vars, "hostname", strdup(un.nodename));
}
void
lif_interface_finalize(struct lif_interface *interface)
{
struct lif_node *iter;
/* convert all addresses to CIDR notation. */
LIF_DICT_FOREACH(iter, &interface->vars)
{
struct lif_dict_entry *entry = iter->data;
if (strcmp(entry->key, "address"))
continue;
struct lif_address *addr = entry->data;
if (!addr->netmask)
addr->netmask = determine_interface_netmask(interface, addr);
}
/* with all addresses converted to CIDR, netmask property is no longer needed. */
struct lif_dict_entry *entry = lif_dict_find(&interface->vars, "netmask");
if (entry != NULL)
{
free(entry->data);
lif_dict_delete_entry(&interface->vars, entry);
}
}
void
lif_interface_collection_init(struct lif_dict *collection)
{