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Change interface for enumerator_create_filter() callback

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This avoids the unportable 5 pointer hack, but requires enumerating in
the callback.
This commit is contained in:
Tobias Brunner
2017-05-26 13:56:44 +02:00
parent 95a63bf281
commit 525cc46cab
50 changed files with 1331 additions and 929 deletions
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src/libcharon/plugins/kernel_netlink/kernel_netlink_net.c
+53 -44
View File
@@ -1518,35 +1518,39 @@ typedef struct {
kernel_address_type_t which;
} address_enumerator_t;
/**
* cleanup function for address enumerator
*/
static void address_enumerator_destroy(address_enumerator_t *data)
CALLBACK(address_enumerator_destroy, void,
address_enumerator_t *data)
{
data->this->lock->unlock(data->this->lock);
free(data);
}
/**
* filter for addresses
*/
static bool filter_addresses(address_enumerator_t *data,
addr_entry_t** in, host_t** out)
CALLBACK(filter_addresses, bool,
address_enumerator_t *data, enumerator_t *orig, va_list args)
{
if (!(data->which & ADDR_TYPE_VIRTUAL) && (*in)->refcount)
{ /* skip virtual interfaces added by us */
return FALSE;
addr_entry_t *addr;
host_t **out;
VA_ARGS_VGET(args, out);
while (orig->enumerate(orig, &addr))
{
if (!(data->which & ADDR_TYPE_VIRTUAL) && addr->refcount)
{ /* skip virtual interfaces added by us */
continue;
}
if (!(data->which & ADDR_TYPE_REGULAR) && !addr->refcount)
{ /* address is regular, but not requested */
continue;
}
if (addr->scope >= RT_SCOPE_LINK)
{ /* skip addresses with a unusable scope */
continue;
}
*out = addr->ip;
return TRUE;
}
if (!(data->which & ADDR_TYPE_REGULAR) && !(*in)->refcount)
{ /* address is regular, but not requested */
return FALSE;
}
if ((*in)->scope >= RT_SCOPE_LINK)
{ /* skip addresses with a unusable scope */
return FALSE;
}
*out = (*in)->ip;
return TRUE;
return FALSE;
}
/**
@@ -1556,30 +1560,35 @@ static enumerator_t *create_iface_enumerator(iface_entry_t *iface,
address_enumerator_t *data)
{
return enumerator_create_filter(
iface->addrs->create_enumerator(iface->addrs),
(void*)filter_addresses, data, NULL);
iface->addrs->create_enumerator(iface->addrs),
filter_addresses, data, NULL);
}
/**
* filter for interfaces
*/
static bool filter_interfaces(address_enumerator_t *data, iface_entry_t** in,
iface_entry_t** out)
CALLBACK(filter_interfaces, bool,
address_enumerator_t *data, enumerator_t *orig, va_list args)
{
if (!(data->which & ADDR_TYPE_IGNORED) && !(*in)->usable)
{ /* skip interfaces excluded by config */
return FALSE;
iface_entry_t *iface, **out;
VA_ARGS_VGET(args, out);
while (orig->enumerate(orig, &iface))
{
if (!(data->which & ADDR_TYPE_IGNORED) && !iface->usable)
{ /* skip interfaces excluded by config */
continue;
}
if (!(data->which & ADDR_TYPE_LOOPBACK) && (iface->flags & IFF_LOOPBACK))
{ /* ignore loopback devices */
continue;
}
if (!(data->which & ADDR_TYPE_DOWN) && !(iface->flags & IFF_UP))
{ /* skip interfaces not up */
continue;
}
*out = iface;
return TRUE;
}
if (!(data->which & ADDR_TYPE_LOOPBACK) && ((*in)->flags & IFF_LOOPBACK))
{ /* ignore loopback devices */
return FALSE;
}
if (!(data->which & ADDR_TYPE_DOWN) && !((*in)->flags & IFF_UP))
{ /* skip interfaces not up */
return FALSE;
}
*out = *in;
return TRUE;
return FALSE;
}
METHOD(kernel_net_t, create_address_enumerator, enumerator_t*,
@@ -1596,9 +1605,9 @@ METHOD(kernel_net_t, create_address_enumerator, enumerator_t*,
return enumerator_create_nested(
enumerator_create_filter(
this->ifaces->create_enumerator(this->ifaces),
(void*)filter_interfaces, data, NULL),
filter_interfaces, data, NULL),
(void*)create_iface_enumerator, data,
(void*)address_enumerator_destroy);
address_enumerator_destroy);
}
METHOD(kernel_net_t, get_interface_name, bool,