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#include <internal.h>
#include <sys/param.h>
#include <ctype.h>
char *
ZExpandRealm(char *realm)
{
char *cp1, *cp2;
static char expand[REALM_SZ];
#ifdef HAVE_KRB5
krb5_error_code result;
char **list_realms;
result = krb5_get_host_realm(Z_krb5_ctx, realm, &list_realms);
if (result) {
/* Error, just return upper-cased realm */
cp2 = realm;
cp1 = expand;
while (*cp2) {
*cp1++ = toupper(*cp2++);
}
*cp1 = '\0';
return expand;
}
strncpy(expand, list_realms[0], sizeof(expand));
expand[sizeof(expand)-1] = '\0';
result = krb5_free_host_realm(Z_krb5_ctx, list_realms);
return expand;
#else
#ifndef HAVE_KRB4
struct hostent *he;
he = gethostbyname(realm);
if (!he || !he->h_name)
/* just use the raw realm */
cp2 = realm;
else
cp2 = he->h_name;
cp1 = expand;
while (*cp2) {
*cp1++ = toupper(*cp2++);
}
*cp1 = '\0';
return(expand);
#else
int retval;
FILE *rlm_file;
char krb_host[NS_MAXDNAME + 1];
static char krb_realm[REALM_SZ+1];
char linebuf[BUFSIZ];
char scratch[64];
/* upcase what we got */
cp2 = realm;
cp1 = expand;
while (*cp2) {
*cp1++ = toupper(*cp2++);
}
*cp1 = '\0';
if ((rlm_file = fopen("/etc/krb.conf", "r")) == (FILE *) 0) {
return(expand);
}
if (fgets(linebuf, BUFSIZ, rlm_file) == NULL) {
/* error reading */
(void) fclose(rlm_file);
return(expand);
}
if (sscanf(linebuf, "%s", krb_realm) < 1) {
/* error reading */
(void) fclose(rlm_file);
return(expand);
}
if (!strncmp(krb_realm, expand, strlen(expand))) {
(void) fclose(rlm_file);
return(krb_realm);
}
while (1) {
/* run through the file, looking for admin host */
if (fgets(linebuf, BUFSIZ, rlm_file) == NULL) {
(void) fclose(rlm_file);
return(expand);
}
if (sscanf(linebuf, "%s %s admin %s", krb_realm, krb_host, scratch)
< 2)
continue;
if (!strncmp(krb_realm, expand, strlen(expand))) {
(void) fclose(rlm_file);
return(krb_realm);
}
}
#endif /* HAVE_KRB4 */
#endif
}
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