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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#include <stdio.h>
#include <k5-int.h>
#include <kadm5/admin.h>
#if HAVE_SRAND48
#define RAND() lrand48()
#define SRAND(a) srand48(a)
#define RAND_TYPE long
#elif HAVE_SRAND
#define RAND() rand()
#define SRAND(a) srand(a)
#define RAND_TYPE int
#elif HAVE_SRANDOM
#define RAND() random()
#define SRAND(a) srandom(a)
#define RAND_TYPE long
#else /* no random */
need a random number generator
#endif /* no random */
krb5_keyblock test1[] = {
{0, ENCTYPE_DES_CBC_CRC, 0, 0},
{-1},
};
krb5_keyblock test2[] = {
{0, ENCTYPE_DES_CBC_RAW, 0, 0},
{-1},
};
krb5_keyblock test3[] = {
{0, ENCTYPE_DES_CBC_MD5, 0, 0},
{-1},
};
krb5_keyblock *tests[] = {
test1, test2, test3, NULL
};
#if 0
int keyblocks_equal(krb5_keyblock *kb1, krb5_keyblock *kb2)
{
return (kb1->enctype == kb2->enctype &&
kb1->length == kb2->length &&
memcmp(kb1->contents, kb2->contents, kb1->length) == 0);
}
#endif
krb5_data tgtname = {
0,
KRB5_TGS_NAME_SIZE,
KRB5_TGS_NAME
};
krb5_enctype ktypes[] = { 0, 0 };
extern krb5_kt_ops krb5_ktf_writable_ops;
int
main(int argc, char **argv)
{
krb5_context context;
krb5_keytab kt;
krb5_keytab_entry ktent;
krb5_encrypt_block eblock;
krb5_creds my_creds;
krb5_get_init_creds_opt *opt;
kadm5_principal_ent_rec princ_ent;
krb5_principal princ, server;
char pw[16];
char *whoami, *principal, *authprinc;
krb5_data pwdata;
void *handle;
int ret, i, test, encnum;
whoami = argv[0];
if (argc != 2 && argc != 3) {
fprintf(stderr, "Usage: %s principal [authuser]\n", whoami);
exit(1);
}
principal = argv[1];
authprinc = argv[2] ? argv[2] : argv[0];
/*
* Setup. Initialize data structures, open keytab, open connection
* to kadm5 server.
*/
memset(&context, 0, sizeof(context));
kadm5_init_krb5_context(&context);
ret = krb5_parse_name(context, principal, &princ);
if (ret) {
com_err(whoami, ret, "while parsing principal name %s", principal);
exit(1);
}
if((ret = krb5_build_principal_ext(context, &server,
krb5_princ_realm(kcontext, princ)->length,
krb5_princ_realm(kcontext, princ)->data,
tgtname.length, tgtname.data,
krb5_princ_realm(kcontext, princ)->length,
krb5_princ_realm(kcontext, princ)->data,
0))) {
com_err(whoami, ret, "while building server name");
exit(1);
}
/* register the WRFILE keytab type */
ret = krb5_kt_register(context, &krb5_ktf_writable_ops);
if (ret) {
com_err(whoami, ret,
"while registering writable key table functions");
exit(1);
}
ret = krb5_kt_default(context, &kt);
if (ret) {
com_err(whoami, ret, "while opening keytab");
exit(1);
}
ret = kadm5_init(context, authprinc, NULL, KADM5_ADMIN_SERVICE, NULL,
KADM5_STRUCT_VERSION, KADM5_API_VERSION_4, NULL,
&handle);
if (ret) {
com_err(whoami, ret, "while initializing connection");
exit(1);
}
/* these pw's don't need to be secure, just different every time */
SRAND((RAND_TYPE)time((void *) NULL));
pwdata.data = pw;
pwdata.length = sizeof(pw);
/*
* For each test:
*
* For each enctype in the test, construct a random password/key.
* Assign all keys to principal with kadm5_setkey_principal. Add
* each key to the keytab, and acquire an initial ticket with the
* keytab (XXX can I specify the kvno explicitly?). If
* krb5_get_init_creds_keytab succeeds, then the keys were set
* successfully.
*/
for (test = 0; tests[test] != NULL; test++) {
krb5_keyblock *testp = tests[test];
printf("+ Test %d:\n", test);
for (encnum = 0; testp[encnum].magic != -1; encnum++) {
for (i = 0; i < sizeof(pw); i++)
pw[i] = (RAND() % 26) + '0'; /* XXX */
krb5_use_enctype(context, &eblock, testp[encnum].enctype);
ret = krb5_string_to_key(context, &eblock, &testp[encnum],
&pwdata, NULL);
if (ret) {
com_err(whoami, ret, "while converting string to key");
exit(1);
}
}
/* now, encnum == # of keyblocks in testp */
ret = kadm5_setkey_principal(handle, princ, testp, encnum);
if (ret) {
com_err(whoami, ret, "while setting keys");
exit(1);
}
ret = kadm5_get_principal(handle, princ, &princ_ent, KADM5_KVNO);
if (ret) {
com_err(whoami, ret, "while retrieving principal");
exit(1);
}
for (encnum = 0; testp[encnum].magic != -1; encnum++) {
printf("+ enctype %d\n", testp[encnum].enctype);
memset(&ktent, 0, sizeof(ktent));
ktent.principal = princ;
ktent.key = testp[encnum];
ktent.vno = princ_ent.kvno;
ret = krb5_kt_add_entry(context, kt, &ktent);
if (ret) {
com_err(whoami, ret, "while adding keytab entry");
exit(1);
}
memset(&my_creds, 0, sizeof(my_creds));
my_creds.client = princ;
my_creds.server = server;
ktypes[0] = testp[encnum].enctype;
ret = krb5_get_init_creds_opt_allocate(context, &opt);
if (ret) {
com_err(whoami, ret, "while allocating gic opts");
exit(1);
}
krb5_get_init_creds_opt_set_etype_list(opt, ktypes, 1);
ret = krb5_get_init_creds_keytab(context, &my_creds, princ,
kt, 0, NULL /* in_tkt_service */,
opt);
krb5_get_init_creds_opt_free(context, opt);
if (ret) {
com_err(whoami, ret, "while acquiring initial ticket");
exit(1);
}
/* since I can't specify enctype explicitly ... */
ret = krb5_kt_remove_entry(context, kt, &ktent);
if (ret) {
com_err(whoami, ret, "while removing keytab entry");
exit(1);
}
}
}
ret = krb5_kt_close(context, kt);
if (ret) {
com_err(whoami, ret, "while closing keytab");
exit(1);
}
ret = kadm5_destroy(handle);
if (ret) {
com_err(whoami, ret, "while closing kadmin connection");
exit(1);
}
return 0;
}
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