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/*
* $Source$
* $Author$
*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* For copying and distribution information, please see the file
* <krb5/copyright.h>.
*
* krb5_unparse_name() routine
*
* Rewritten by Theodore Ts'o to propoerly unparse principal names
* which have the component or realm separator as part of one of their
* components.
*/
#if !defined(lint) && !defined(SABER)
static char rcsid_unparse_c[] =
"$Id$";
#endif /* !lint & !SABER */
#include <stdio.h>
#include <krb5/krb5.h>
#include <krb5/ext-proto.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 '/', '@', or '\0'
* appear in any the component, they will be representing using
* backslash encoding. ("\/", "\@", or '\0', respectively)
*
* returns system errors XXX
*/
#define REALM_SEP '@'
#define COMPONENT_SEP '/'
krb5_error_code
krb5_unparse_name_ext(principal, name, size)
krb5_const_principal principal;
register char **name;
int *size;
{
register char *cp, *q;
register int i,j;
register int totalsize = 0;
int length;
if (!principal[0] || !principal[1])
return KRB5_PARSE_MALFORMED;
for (i = 0; principal[i]; i++) {
cp = principal[i]->data;
length = principal[i]->length;
for (j=0; j < length; j++,cp++)
if (*cp == REALM_SEP || *cp == COMPONENT_SEP ||
*cp == '\0' || *cp == '\\' || *cp == '\t')
totalsize += 2;
else
totalsize++;
totalsize++; /* This is for the separator */
}
/*
* we need only n-1 seps for n components, but we need an
* extra byte for the NULL at the end
*/
if (*name) {
if (*size < (totalsize)) {
*size = totalsize;
*name = realloc(*name, totalsize);
}
} else {
*name = malloc(totalsize); /* room for null */
if (size)
*size = totalsize;
}
if (!*name)
return ENOMEM;
q = *name;
for (i = 1; principal[i]; i++) {
cp = principal[i]->data;
length = principal[i]->length;
for (j=0; j < length; j++,cp++) {
switch (*cp) {
case COMPONENT_SEP:
case REALM_SEP:
case '\t':
case '\\':
*q++ = '\\';
*q++ = *cp;
break;
case '\0':
*q++ = '\\';
*q++ = '0';
break;
default:
*q++ = *cp;
}
}
*q++ = COMPONENT_SEP;
}
q--; /* Back up last component separator */
*q++ = REALM_SEP;
cp = principal[0]->data;
length = principal[0]->length;
for (j=0; j < length; j++,cp++) {
switch (*cp) {
case COMPONENT_SEP:
case REALM_SEP:
case '\t':
case '\\':
*q++ = '\\';
*q++ = *cp;
break;
case '\0':
*q++ = '\\';
*q++ = '0';
break;
default:
*q++ = *cp;
}
}
*q++ = '\0';
return 0;
}
krb5_error_code
krb5_unparse_name(principal, name)
krb5_const_principal principal;
register char **name;
{
*name = NULL;
return(krb5_unparse_name_ext(principal, name, NULL));
}
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