s4:heimdal: import lorikeet-heimdal-202201172009 (commit 5a0b45cd723628b3690ea848548b...

[samba.git] / source4 / heimdal / lib / roken / getifaddrs_w32.c

diff --git a/source4/heimdal/lib/roken/getifaddrs_w32.c b/source4/heimdal/lib/roken/getifaddrs_w32.c
new file mode 100644 (file)
index 0000000..beb29b3
--- /dev/null
+++ b/source4/heimdal/lib/roken/getifaddrs_w32.c
@@ -0,0 +1,161 @@
+/***********************************************************************
+ * Copyright (c) 2009, Secure Endpoints Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in
+ *   the documentation and/or other materials provided with the
+ *   distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ **********************************************************************/
+
+#include<config.h>
+
+#include <roken.h>
+
+#include <ifaddrs.h>
+
+#ifndef _WIN32
+#error This is a Windows specific implementation.
+#endif
+
+static struct sockaddr *
+dupaddr(const sockaddr_gen * src)
+{
+    sockaddr_gen * d = malloc(sizeof(*d));
+
+    if (d) {
+       memcpy(d, src, sizeof(*d));
+    }
+
+    return (struct sockaddr *) d;
+}
+
+int ROKEN_LIB_FUNCTION
+rk_getifaddrs(struct ifaddrs **ifpp)
+{
+    SOCKET s = INVALID_SOCKET;
+    size_t il_len = 8192;
+    int ret = -1;
+    INTERFACE_INFO *il = NULL;
+
+    *ifpp = NULL;
+
+    s = socket(AF_INET, SOCK_DGRAM, 0);
+    if (s == INVALID_SOCKET)
+       return -1;
+
+    for (;;) {
+       DWORD cbret = 0;
+
+       il = malloc(il_len);
+       if (!il)
+           break;
+
+       ZeroMemory(il, il_len);
+
+       if (WSAIoctl(s, SIO_GET_INTERFACE_LIST, NULL, 0,
+                    (LPVOID) il, (DWORD) il_len, &cbret,
+                    NULL, NULL) == 0) {
+           il_len = cbret;
+           break;
+       }
+
+       free (il);
+       il = NULL;
+
+       if (WSAGetLastError() == WSAEFAULT && cbret > il_len) {
+           il_len = cbret;
+       } else {
+           break;
+       }
+    }
+
+    if (!il)
+       goto _exit;
+
+    /* il is an array of INTERFACE_INFO structures.  il_len has the
+       actual size of the buffer.  The number of elements is
+       il_len/sizeof(INTERFACE_INFO) */
+
+    {
+       size_t n = il_len / sizeof(INTERFACE_INFO);
+       size_t i;
+
+       for (i = 0; i < n; i++ ) {
+           struct ifaddrs *ifp;
+
+           ifp = malloc(sizeof(*ifp));
+           if (ifp == NULL)
+               break;
+
+           ZeroMemory(ifp, sizeof(*ifp));
+
+           ifp->ifa_next = NULL;
+           ifp->ifa_name = NULL;
+           ifp->ifa_flags = il[i].iiFlags;
+           ifp->ifa_addr = dupaddr(&il[i].iiAddress);
+           ifp->ifa_netmask = dupaddr(&il[i].iiNetmask);
+           ifp->ifa_broadaddr = dupaddr(&il[i].iiBroadcastAddress);
+           ifp->ifa_data = NULL;
+
+           *ifpp = ifp;
+           ifpp = &ifp->ifa_next;
+       }
+
+       if (i == n)
+           ret = 0;
+    }
+
+ _exit:
+
+    if (s != INVALID_SOCKET)
+       closesocket(s);
+
+    if (il)
+       free (il);
+
+    return ret;
+}
+
+void ROKEN_LIB_FUNCTION
+rk_freeifaddrs(struct ifaddrs *ifp)
+{
+    struct ifaddrs *p, *q;
+
+    for(p = ifp; p; ) {
+       if (p->ifa_name)
+           free(p->ifa_name);
+       if(p->ifa_addr)
+           free(p->ifa_addr);
+       if(p->ifa_dstaddr)
+           free(p->ifa_dstaddr);
+       if(p->ifa_netmask)
+           free(p->ifa_netmask);
+       if(p->ifa_data)
+           free(p->ifa_data);
+       q = p;
+       p = p->ifa_next;
+       free(q);
+    }
+}