--- /dev/null
+/*
+ * $Source$
+ * $Author$
+ *
+ * Copyright 1992 by the Massachusetts Institute of Technology.
+ * All Rights Reserved.
+ *
+ * Export of this software from the United States of America is assumed
+ * to require a specific license from the United States Government.
+ * It is the responsibility of any person or organization contemplating
+ * export to obtain such a license before exporting.
+ *
+ * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+ * distribute this software and its documentation for any purpose and
+ * without fee is hereby granted, provided that the above copyright
+ * notice appear in all copies and that both that copyright notice and
+ * this permission notice appear in supporting documentation, and that
+ * the name of M.I.T. not be used in advertising or publicity pertaining
+ * to distribution of the software without specific, written prior
+ * permission. M.I.T. makes no representations about the suitability of
+ * this software for any purpose. It is provided "as is" without express
+ * or implied warranty.
+ *
+ *
+ * Build a principal from a V4 specification
+ *
+ * NOTE: This is highly site specific, and is only really necessary
+ * for sites who need to convert from V4 to V5. It is used by both
+ * the KDC and the kdb5_convert program. Since its use is highly
+ * specialized, the necesary information is just going to be
+ * hard-coded in this file.
+ */
+
+#include <krb5/krb5.h>
+
+struct krb_convert {
+ char *v4_str;
+ char *v5_str;
+};
+
+static struct krb_convert sconv_list[] = {
+ "rcmd", "host",
+ "discuss", "discuss",
+ "rvdsrv", "rvdsrv",
+ "olc", "olc",
+ "pop", "pop",
+ "sis", "sis",
+ "rfs", "rfs",
+ 0, 0,
+};
+
+static struct krb_convert rconv_list[] = {
+ "ATHENA.MIT.EDU", ".mit.edu",
+ 0, 0
+};
+
+krb5_error_code
+krb5_425_conv_principal(name, instance, realm, princ)
+ const char *name;
+ const char *instance;
+ const char *realm;
+ krb5_principal *princ;
+{
+ struct krb_convert *p;
+ char buf[256]; /* V4 instances are limited to 40 characters */
+
+ if (instance) {
+ if (instance[0] == '\0') {
+ instance = 0;
+ goto not_service;
+ }
+ p = sconv_list;
+ while (1) {
+ if (!p->v4_str)
+ goto not_service;
+ if (!strcmp(p->v4_str, name))
+ break;
+ p++;
+ }
+ name = p->v5_str;
+ strcpy(buf, instance);
+ p = rconv_list;
+ while (1) {
+ if (!p->v4_str)
+ break;
+ if (!strcmp(p->v4_str, realm))
+ break;
+ p++;
+ }
+ if (p->v5_str)
+ strcat(buf, p->v5_str);
+ instance = buf;
+ }
+
+not_service:
+ return(krb5_build_principal(princ, strlen(realm), realm, name,
+ instance, 0));
+}