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git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@163 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/lib/krb5/krb/unparse.c b/src/lib/krb5/krb/unparse.c
new file mode 100644 (file)
index 0000000..fa4d828
--- /dev/null
+++ b/src/lib/krb5/krb/unparse.c
@@ -0,0 +1,87 @@
+/*
+ * $Source$
+ * $Author$
+ *
+ * Copyright 1990 by the Massachusetts Institute of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <krb5/mit-copyright.h>.
+ *
+ * krb5_unparse_name() routine
+ */
+
+#if !defined(lint) && !defined(SABER)
+static char rcsid_unparse_c[] =
+"$Id$";
+#endif /* !lint & !SABER */
+
+#include <krb5/copyright.h>
+
+#include <krb5/krb5.h>
+#include <krb5/krb5_err.h>
+#ifdef __STDC__
+#include <stdlib.h>
+#else
+extern char *malloc(), *index(), *calloc();
+#endif /* __STDC__ */
+
+#include <errno.h>
+
+/*
+ converts the multi-part
+ principal format used in the protocols to a single-string representation
+ of the name.
+
+ the name returned is in allocated storage and should be freed by the caller
+ when finished.
+
+ Conventions: / is used to separate components; @ is used to separate
+ the realm from the rest of the name.  If any component besides the realm has
+ a / or @ in it, an error is returned.
+
+ returns system errors XXX
+ */
+
+#define REALM_SEP      '@'
+#define        COMPONENT_SEP   '/'
+#define        REALM_SEP_STRING        "@"
+#define        COMPONENT_SEP_STRING    "/"
+
+krb5_error_code
+krb5_unparse_name(principal, name)
+krb5_principal principal;
+register char **name;
+{
+    register char *cp;
+    register int i;
+    int totalsize = 0;
+
+    /* check for invalid elements of components; don't need to check
+       realm, which is first component */
+    for (i = 1; principal[i]; i++) {
+       for (cp = principal[i]->data;
+            cp < principal[i]->data + principal[i]->length; cp++)
+           if (*cp == REALM_SEP || *cp == COMPONENT_SEP)
+               return KRB5_PARSE_ILLCHAR;
+       totalsize += principal[i]->length + 1;  /* + 1 for separator */
+    }
+    totalsize += principal[0]->length; /* no +1 since we need only n-1 seps
+                                          for n components */
+
+    *name = malloc(totalsize+1);       /* room for null */
+    if (!*name)
+       return ENOMEM;
+
+    (void) bzero(*name, totalsize+1);
+
+    for (i = 1; principal[i]; i++) {
+       strncat(*name, principal[i]->data, principal[i]->length);
+       if (principal[i+1])             /* don't append sep to last elt */
+           strcat(*name, COMPONENT_SEP_STRING);
+    }
+
+    strcat(*name, REALM_SEP_STRING);
+    strncat(*name, principal[0]->data, principal[0]->length);
+
+    return 0;
+}