krb5_ccache_intro - The credential cache functions

krb5_ccache structure holds a Kerberos credential cache.

Heimdal support the follow types of credential caches:

SCC Store the credential in a database FILE Store the credential in memory MEMORY Store the credential in memory API A credential cache server based solution for Mac OS X KCM A credential cache server based solution for all platforms

This is a minimalistic version of klist:

#include <krb5.h>

int
main (int argc, char **argv)
{
 krb5_context context;
 krb5_cc_cursor cursor;
 krb5_error_code ret;
 krb5_ccache id;
 krb5_creds creds;

 if (krb5_init_context (&context) != 0)
 errx(1, 'krb5_context');

 ret = krb5_cc_default (context, &id);
 if (ret)
 krb5_err(context, 1, ret, 'krb5_cc_default');

 ret = krb5_cc_start_seq_get(context, id, &cursor);
 if (ret)
 krb5_err(context, 1, ret, 'krb5_cc_start_seq_get');

 while((ret = krb5_cc_next_cred(context, id, &cursor, &creds)) == 0){
 char *principal;

 krb5_unparse_name(context, creds.server, &principal);
 printf('principal: %s\\n', principal);
 free(principal);
 krb5_free_cred_contents (context, &creds);
 }
 ret = krb5_cc_end_seq_get(context, id, &cursor);
 if (ret)
 krb5_err(context, 1, ret, 'krb5_cc_end_seq_get');

 krb5_cc_close(context, id);

 krb5_free_context(context);
 return 0;
}