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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <krb5.h>
extern int optind;
extern char *optarg;
static char *prog;
static void xusage()
{
fprintf(stderr, "xusage: %s [-c ccache] [-e etype] [-f flags] service1 service2 ...\n", prog);
exit(1);
}
int quiet = 0;
static void do_kdeltkt (int argc, char *argv[], char *ccachestr, char *etypestr, int flags);
int main(int argc, char *argv[])
{
int option;
char *etypestr = 0;
char *ccachestr = 0;
int flags = 0;
prog = strrchr(argv[0], '/');
prog = prog ? (prog + 1) : argv[0];
while ((option = getopt(argc, argv, "c:e:f:hq")) != -1) {
switch (option) {
case 'c':
ccachestr = optarg;
break;
case 'e':
etypestr = optarg;
break;
case 'f':
flags = atoi(optarg);
break;
case 'q':
quiet = 1;
break;
case 'h':
default:
xusage();
break;
}
}
if ((argc - optind) < 1)
xusage();
do_kdeltkt(argc - optind, argv + optind, ccachestr, etypestr, flags);
return 0;
}
static void do_kdeltkt (int count, char *names[],
char *ccachestr, char *etypestr, int flags)
{
krb5_context context;
krb5_error_code ret;
int i, errors;
krb5_enctype etype;
krb5_ccache ccache;
krb5_principal me;
krb5_creds in_creds, out_creds;
int retflags;
char *princ;
ret = krb5_init_context(&context);
if (ret) {
com_err(prog, ret, "while initializing krb5 library");
exit(1);
}
if (etypestr) {
ret = krb5_string_to_enctype(etypestr, &etype);
if (ret) {
com_err(prog, ret, "while converting etype");
exit(1);
}
retflags = KRB5_TC_MATCH_SRV_NAMEONLY | KRB5_TC_SUPPORTED_KTYPES;
} else {
etype = 0;
retflags = KRB5_TC_MATCH_SRV_NAMEONLY;
}
if (ccachestr)
ret = krb5_cc_resolve(context, ccachestr, &ccache);
else
ret = krb5_cc_default(context, &ccache);
if (ret) {
com_err(prog, ret, "while opening ccache");
exit(1);
}
ret = krb5_cc_get_principal(context, ccache, &me);
if (ret) {
com_err(prog, ret, "while getting client principal name");
exit(1);
}
errors = 0;
for (i = 0; i < count; i++) {
memset(&in_creds, 0, sizeof(in_creds));
in_creds.client = me;
ret = krb5_parse_name(context, names[i], &in_creds.server);
if (ret) {
if (!quiet)
fprintf(stderr, "%s: %s while parsing principal name\n",
names[i], error_message(ret));
errors++;
continue;
}
ret = krb5_unparse_name(context, in_creds.server, &princ);
if (ret) {
fprintf(stderr, "%s: %s while printing principal name\n",
names[i], error_message(ret));
errors++;
continue;
}
in_creds.keyblock.enctype = etype;
ret = krb5_cc_retrieve_cred(context, ccache, retflags,
&in_creds, &out_creds);
if (ret) {
fprintf(stderr, "%s: %s while retrieving credentials\n",
princ, error_message(ret));
krb5_free_unparsed_name(context, princ);
errors++;
continue;
}
ret = krb5_cc_remove_cred(context, ccache, flags, &out_creds);
krb5_free_principal(context, in_creds.server);
if (ret) {
fprintf(stderr, "%s: %s while removing credentials\n",
princ, error_message(ret));
krb5_free_cred_contents(context, &out_creds);
krb5_free_unparsed_name(context, princ);
errors++;
continue;
}
krb5_free_unparsed_name(context, princ);
krb5_free_cred_contents(context, &out_creds);
}
krb5_free_principal(context, me);
krb5_cc_close(context, ccache);
krb5_free_context(context);
if (errors)
exit(1);
exit(0);
}
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