summaryrefslogtreecommitdiffstats
path: root/src/common/win32/ifaddrs.cc
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/common/win32/ifaddrs.cc109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/common/win32/ifaddrs.cc b/src/common/win32/ifaddrs.cc
new file mode 100644
index 000000000..d7de4a5ff
--- /dev/null
+++ b/src/common/win32/ifaddrs.cc
@@ -0,0 +1,109 @@
+#include <errno.h>
+#include <winsock2.h>
+#include <wincrypt.h>
+#include <iphlpapi.h>
+#include <ws2tcpip.h>
+#include <ifaddrs.h>
+#include <stdio.h>
+
+#include "include/compat.h"
+
+int getifaddrs(struct ifaddrs **ifap)
+{
+ int ret = 0;
+
+ DWORD size, res = 0;
+ res = GetAdaptersAddresses(
+ AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
+ NULL, NULL, &size);
+ if (res != ERROR_BUFFER_OVERFLOW) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ PIP_ADAPTER_ADDRESSES adapter_addrs = (PIP_ADAPTER_ADDRESSES)malloc(size);
+ res = GetAdaptersAddresses(
+ AF_UNSPEC, GAA_FLAG_INCLUDE_PREFIX,
+ NULL, adapter_addrs, &size);
+ if (res != ERROR_SUCCESS) {
+ errno = ENOMEM;
+ return -1;
+ }
+
+ struct ifaddrs *out_list_head = NULL;
+ struct ifaddrs *out_list_curr;
+
+ for (PIP_ADAPTER_ADDRESSES curr_addrs = adapter_addrs;
+ curr_addrs != NULL;
+ curr_addrs = curr_addrs->Next) {
+ if (curr_addrs->OperStatus != 1)
+ continue;
+
+ for (PIP_ADAPTER_UNICAST_ADDRESS unicast_addrs = curr_addrs->FirstUnicastAddress;
+ unicast_addrs != NULL;
+ unicast_addrs = unicast_addrs->Next) {
+ SOCKADDR* unicast_sockaddr = unicast_addrs->Address.lpSockaddr;
+ if (unicast_sockaddr->sa_family != AF_INET &&
+ unicast_sockaddr->sa_family != AF_INET6)
+ continue;
+ out_list_curr = calloc(sizeof(*out_list_curr), 1);
+ if (!out_list_curr) {
+ errno = ENOMEM;
+ ret = -1;
+ goto out;
+ }
+
+ out_list_curr->ifa_next = out_list_head;
+ out_list_head = out_list_curr;
+
+ out_list_curr->ifa_flags = IFF_UP;
+ if (curr_addrs->IfType == IF_TYPE_SOFTWARE_LOOPBACK)
+ out_list_curr->ifa_flags |= IFF_LOOPBACK;
+
+ out_list_curr->ifa_addr = (struct sockaddr *) &out_list_curr->in_addrs;
+ out_list_curr->ifa_netmask = (struct sockaddr *) &out_list_curr->in_netmasks;
+ out_list_curr->ifa_name = out_list_curr->ad_name;
+
+ if (unicast_sockaddr->sa_family == AF_INET) {
+ ULONG subnet_mask = 0;
+ if (ConvertLengthToIpv4Mask(unicast_addrs->OnLinkPrefixLength, &subnet_mask)) {
+ errno = ENODATA;
+ ret = -1;
+ goto out;
+ }
+ struct sockaddr_in *addr4 = (struct sockaddr_in *) &out_list_curr->in_addrs;
+ struct sockaddr_in *netmask4 = (struct sockaddr_in *) &out_list_curr->in_netmasks;
+ netmask4->sin_family = unicast_sockaddr->sa_family;
+ addr4->sin_family = unicast_sockaddr->sa_family;
+ netmask4->sin_addr.S_un.S_addr = subnet_mask;
+ addr4->sin_addr = ((struct sockaddr_in*) unicast_sockaddr)->sin_addr;
+ } else {
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *) &out_list_curr->in_addrs;
+ (*addr6) = *(struct sockaddr_in6 *) unicast_sockaddr;
+ }
+ out_list_curr->speed = curr_addrs->TransmitLinkSpeed;
+ // TODO maybe use friendly name instead of adapter GUID
+ sprintf_s(out_list_curr->ad_name,
+ sizeof(out_list_curr->ad_name),
+ curr_addrs->AdapterName);
+ }
+ }
+ ret = 0;
+out:
+ free(adapter_addrs);
+ if (ret && out_list_head)
+ free(out_list_head);
+ else if (ifap)
+ *ifap = out_list_head;
+
+ return ret;
+}
+
+void freeifaddrs(struct ifaddrs *ifa)
+{
+ while (ifa) {
+ struct ifaddrs *next = ifa->ifa_next;
+ free(ifa);
+ ifa = next;
+ }
+}