1 files changed, 125 insertions, 0 deletions
diff --git a/src/common/impl/netif_haiku.c b/src/common/impl/netif_haiku.c
new file mode 100644
index 0000000..a32138c
--- /dev/null
+++ b/src/common/impl/netif_haiku.c
@@ -0,0 +1,125 @@
+#include "common/netif.h"
+#include "common/io.h"
+#include "common/mallocHelper.h"
+
+#include <arpa/inet.h>
+#include <net/if.h>
+#include <net/route.h>
+#include <sys/socket.h>
+#include <sys/sockio.h>
+#include <stdio.h>
+
+// loosely based on Haiku's src/bin/network/route/route.cpp
+
+bool ffNetifGetDefaultRouteImplV4(FFNetifDefaultRouteResult* result) {
+    FF_AUTO_CLOSE_FD int pfRoute = socket(AF_INET, SOCK_RAW, AF_INET);
+    if (pfRoute < 0) {
+        return false;
+    }
+
+    struct ifconf config;
+    config.ifc_len = sizeof(config.ifc_value);
+    if (ioctl(pfRoute, SIOCGRTSIZE, &config, sizeof(struct ifconf)) < 0) {
+        return false;
+    }
+
+    int size = config.ifc_value;
+    if (size <= 0) {
+        return false;
+    }
+
+    FF_AUTO_FREE void* buffer = malloc((size_t) size);
+    if (buffer == NULL) {
+        return false;
+    }
+
+    config.ifc_len = size;
+    config.ifc_buf = buffer;
+    if (ioctl(pfRoute, SIOCGRTTABLE, &config, sizeof(struct ifconf)) < 0) {
+        return false;
+    }
+
+    struct ifreq* interface = (struct ifreq*) buffer;
+    struct ifreq* end = (struct ifreq*) ((uint8_t*) buffer + size);
+
+    while (interface < end) {
+        if (interface->ifr_route.flags & RTF_DEFAULT) {
+            // interface->ifr_metric?
+            strlcpy(result->ifName, interface->ifr_name, IF_NAMESIZE);
+            result->ifIndex = if_nametoindex(interface->ifr_name);
+            if (interface->ifr_route.source) {
+                result->preferredSourceAddrV4 = ((struct sockaddr_in*) interface->ifr_route.source)->sin_addr.s_addr;
+            }
+            return true;
+        }
+
+        size_t addressSize = 0;
+        if (interface->ifr_route.destination != NULL) {
+            addressSize += interface->ifr_route.destination->sa_len;
+        }
+        if (interface->ifr_route.mask != NULL) {
+            addressSize += interface->ifr_route.mask->sa_len;
+        }
+        if (interface->ifr_route.gateway != NULL) {
+            addressSize += interface->ifr_route.gateway->sa_len;
+        }
+
+        interface = (struct ifreq*) ((addr_t) interface + IF_NAMESIZE + sizeof(struct route_entry) + addressSize);
+    }
+
+    return false;
+}
+
+bool ffNetifGetDefaultRouteImplV6(FFNetifDefaultRouteResult* result) {
+    FF_AUTO_CLOSE_FD int pfRoute = socket(AF_INET6, SOCK_RAW, AF_INET6);
+    if (pfRoute < 0) {
+        return false;
+    }
+
+    struct ifconf config;
+    config.ifc_len = sizeof(config.ifc_value);
+    if (ioctl(pfRoute, SIOCGRTSIZE, &config, sizeof(struct ifconf)) < 0) {
+        return false;
+    }
+
+    int size = config.ifc_value;
+    if (size <= 0) {
+        return false;
+    }
+
+    FF_AUTO_FREE void* buffer = malloc((size_t) size);
+    if (buffer == NULL) {
+        return false;
+    }
+
+    config.ifc_len = size;
+    config.ifc_buf = buffer;
+    if (ioctl(pfRoute, SIOCGRTTABLE, &config, sizeof(struct ifconf)) < 0) {
+        return false;
+    }
+
+    struct ifreq* interface = (struct ifreq*) buffer;
+    struct ifreq* end = (struct ifreq*) ((uint8_t*) buffer + size);
+
+    while (interface < end) {
+        if (interface->ifr_route.flags & RTF_DEFAULT) {
+            strlcpy(result->ifName, interface->ifr_name, IF_NAMESIZE);
+            result->ifIndex = if_nametoindex(interface->ifr_name);
+            return true;
+        }
+
+        size_t addressSize = 0;
+        if (interface->ifr_route.destination != NULL) {
+            addressSize += interface->ifr_route.destination->sa_len;
+        }
+        if (interface->ifr_route.mask != NULL) {
+            addressSize += interface->ifr_route.mask->sa_len;
+        }
+        if (interface->ifr_route.gateway != NULL) {
+            addressSize += interface->ifr_route.gateway->sa_len;
+        }
+
+        interface = (struct ifreq*) ((addr_t) interface + IF_NAMESIZE + sizeof(struct route_entry) + addressSize);
+    }
+    return false;
+}