1 files changed, 108 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/name2name.c b/crypto/kerberosIV/lib/krb/name2name.c
new file mode 100644
index 0000000..49e457d
--- /dev/null
+++ b/crypto/kerberosIV/lib/krb/name2name.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 1995, 1996, 1997, 1998, 1999 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. 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"
+
+RCSID("$Id: name2name.c,v 1.22 1999/12/02 16:58:43 joda Exp $");
+
+/* convert host to a more fully qualified domain name, returns 0 if
+ * phost is the same as host, 1 otherwise. phost should be
+ * phost_size bytes long.
+ */
+
+int
+krb_name_to_name(const char *host, char *phost, size_t phost_size)
+{
+    struct hostent *hp;
+    struct in_addr adr;
+    const char *tmp;
+    
+    adr.s_addr = inet_addr(host);
+    if (adr.s_addr != INADDR_NONE)
+	hp = gethostbyaddr((char *)&adr, sizeof(adr), AF_INET);
+    else
+	hp = gethostbyname(host);
+    if (hp == NULL)
+	tmp = host;
+    else {
+	tmp = hp->h_name;
+	/*
+	 * Broken SunOS 5.4 sometimes keeps the official name as the
+	 * 1:st alias.
+	 */
+        if (strchr(tmp, '.') == NULL
+	    && hp->h_aliases != NULL
+	    && hp->h_aliases[0] != NULL
+	    && strchr (hp->h_aliases[0], '.') != NULL)
+		tmp = hp->h_aliases[0];
+    }
+    strlcpy (phost, tmp, phost_size);
+
+    if (strcmp(phost, host) == 0)
+	return 0;
+    else
+	return 1;
+}
+
+/* lowercase and truncate */
+
+void
+k_ricercar(char *name)
+{
+    unsigned char *p = (unsigned char *)name;
+
+    while(*p && *p != '.'){
+	if(isupper(*p))
+	    *p = tolower(*p);
+	p++;
+    }
+    if(*p == '.')
+	*p = 0;
+}
+
+/*
+ * This routine takes an alias for a host name and returns the first
+ * field, in lower case, of its domain name.
+ *
+ * Example: "fOo.BAR.com" -> "foo"
+ */
+
+char *
+krb_get_phost(const char *alias)
+{
+    static char phost[MaxHostNameLen];
+    
+    krb_name_to_name(alias, phost, sizeof(phost));
+    k_ricercar(phost);
+    return phost;
+}