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.\" $NetBSD: krb5_ccache_intro.3,v 1.3 2023/06/19 21:41:40 christos Exp $
.\"
.TH "krb5_ccache_intro" 3 "Tue Nov 15 2022" "Version 7.8.0" "Heimdal Kerberos 5 library" \" -*- nroff -*-
.ad l
.nh
.SH NAME
krb5_ccache_intro \- The credential cache functions
.SH "Kerberos credential caches"
.PP
krb5_ccache structure holds a Kerberos credential cache\&.
.PP
Heimdal support the follow types of credential caches:
.PP
.IP "\(bu" 2
SCC Store the credential in a database
.IP "\(bu" 2
FILE Store the credential in memory
.IP "\(bu" 2
MEMORY Store the credential in memory
.IP "\(bu" 2
API A credential cache server based solution for Mac OS X
.IP "\(bu" 2
KCM A credential cache server based solution for all platforms
.PP
.SS "Example"
This is a minimalistic version of klist:
.PP
.nf
#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;
}
.fi
.PP
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