Initial commit

FossilOrigin-Name: 0a55db6c3b5c061507e8a6e89ebfd0efc7fd2fdce4ee43db9e2aea9ed5e6b081

src/capwap/sock_getifinfo.c

@@ -0,0 +1,66 @@
+/*
+    This file is part of libcapwap.
+
+    libcapwap is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libcapwap is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libcapwap.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ *@file
+ *@brief Implementation of sock_getbroadcastaddr
+ */
+
+
+#include <string.h>
+#include <ifaddrs.h>
+
+#include "sock.h"
+
+/**
+ * Get the broadcast adddress
+ * @param addr address to search
+ * @param broadcastaddr receives the resulting broadcast address
+ * @return 1 if successful, 0 if no braodcast address was determined
+ */
+int sock_getifinfo(const struct sockaddr *addr, char *ifname, struct sockaddr *broadcast,
+		   struct sockaddr *netmask)
+{
+	struct ifaddrs *ifap, *ifa;
+
+	if (getifaddrs(&ifap) == -1)
+		return 0;
+
+	int rc = 0;
+	for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
+
+		if (sock_cmpaddr(addr, ifa->ifa_addr, 0))
+			continue;
+
+		if (addr->sa_family == AF_INET ) {
+
+			if (broadcast)
+				memcpy(broadcast, ifa->ifa_broadaddr,
+				       sock_addrlen(ifa->ifa_broadaddr));
+			if (netmask)
+				memcpy(netmask, ifa->ifa_netmask,
+				       sock_addrlen(ifa->ifa_netmask));
+		}
+		if (ifname)
+			strcpy(ifname, ifa->ifa_name);	//, strlen(ifa->ifa_name));
+
+		rc = 1;
+		break;
+	}
+	freeifaddrs(ifap);
+	return rc;
+}