The first big step towards a complete upgrade to kth-krb4-0.9.7

1 files changed, 73 insertions, 0 deletions

diff --git a/kerberosIV/krb/k_getsockinst.c b/kerberosIV/krb/k_getsockinst.c
new file mode 100644
index 00000000000..89468812dec
--- /dev/null
+++ b/kerberosIV/krb/k_getsockinst.c
@@ -0,0 +1,73 @@
+/* $KTH: k_getsockinst.c,v 1.10 1997/05/02 14:29:17 assar Exp $ */
+
+/*
+ * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. 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.
+ * 
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the Kungliga Tekniska
+ *      Högskolan and its contributors.
+ * 
+ * 4. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 "krb_locl.h"
+
+/*
+ * Return in inst the name of the local interface bound to socket
+ * fd. On Failure return the 'wildcard' instance "*".
+ */
+
+int
+k_getsockinst(int fd, char *inst, size_t inst_size)
+{
+  struct sockaddr_in addr;
+  int len = sizeof(addr);
+  struct hostent *hnam;
+
+  if (getsockname(fd, (struct sockaddr *)&addr, &len) < 0)
+    goto fail;
+
+  hnam = gethostbyaddr((char *)&addr.sin_addr,
+		       sizeof(addr.sin_addr),
+		       addr.sin_family);
+  if (hnam == 0)
+    goto fail;
+
+  strncpy (inst, hnam->h_name, inst_size);
+  inst[inst_size - 1] = '\0';
+  k_ricercar(inst); /* Canonicalize name */
+  return 0;			/* Success */
+
+ fail:
+  inst[0] = '*';
+  inst[1] = 0;
+  return -1;
+}