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Add intf_get_index to libdnet-stripped.

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This function gets an interface from an internal interface number, such
as a sockaddr_in6.sin6_scope_id.
This commit is contained in:
david
2011-08-30 17:01:50 +00:00
parent c5afa5b57b
commit 12f4742f0f
3 changed files with 49 additions and 0 deletions
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1
libdnet-stripped/include/dnet/intf.h
View File

@@ -58,6 +58,7 @@ typedef int (*intf_handler)(const struct intf_entry *entry, void *arg);
__BEGIN_DECLS
intf_t *intf_open(void);
int intf_get(intf_t *i, struct intf_entry *entry);
int intf_get_index(intf_t *intf, struct intf_entry *entry, int af, unsigned int index);
int intf_get_src(intf_t *i, struct intf_entry *entry, struct addr *src);
int intf_get_dst(intf_t *i, struct intf_entry *entry, struct addr *dst);
int intf_get_pcap_devname(const char *intf_name, char *pcapdev, int pcapdevlen);

33
libdnet-stripped/src/intf-win32.c
View File

@@ -257,6 +257,21 @@ _find_adapter_address(intf_t *intf, const char *device)
return NULL;
}
static IP_ADAPTER_ADDRESSES *
_find_adapter_address_by_index(intf_t *intf, int af, unsigned int index)
{
IP_ADAPTER_ADDRESSES *a;
for (a = intf->iftable; a != NULL; a = a->Next) {
if (af == AF_INET && index == a->IfIndex)
return a;
if (af == AF_INET6 && index == a->Ipv6IfIndex)
return a;
}
return NULL;
}
intf_t *
intf_open(void)
{
@@ -280,6 +295,24 @@ intf_get(intf_t *intf, struct intf_entry *entry)
return (0);
}
/* Look up an interface from an index, such as a sockaddr_in6.sin6_scope_id. */
int
intf_get_index(intf_t *intf, struct intf_entry *entry, int af, unsigned int index)
{
IP_ADAPTER_ADDRESSES *a;
if (_refresh_tables(intf) < 0)
return (-1);
a = _find_adapter_address_by_index(intf, af, index);
if (a == NULL)
return (-1);
_adapter_address_to_entry(intf, a, entry);
return (0);
}
int
intf_get_src(intf_t *intf, struct intf_entry *entry, struct addr *src)
{

15
libdnet-stripped/src/intf.c
View File

@@ -590,6 +590,21 @@ intf_get(intf_t *intf, struct intf_entry *entry)
return (_intf_get_aliases(intf, entry));
}
/* Look up an interface from an index, such as a sockaddr_in6.sin6_scope_id. */
int
intf_get_index(intf_t *intf, struct intf_entry *entry, int af, unsigned int index)
{
char namebuf[IFNAMSIZ];
char *devname;
/* af is ignored; only used in intf-win32.c. */
devname = if_indextoname(index, namebuf);
if (devname == NULL)
return (-1);
strlcpy(entry->intf_name, devname, sizeof(entry->intf_name));
return intf_get(intf, entry);
}
static int
_match_intf_src(const struct intf_entry *entry, void *arg)
{