C++ (Cpp) krb5_get_init_creds_keyblockの例

コード例 #1

ファイル: kerberos.c プロジェクト: sangfo/WMI_cmd

/*
  simulate a kinit, putting the tgt in the given credentials cache.
  Orignally by [email protected]

  This version is built to use a keyblock, rather than needing the
  original password.
*/
int kerberos_kinit_keyblock_cc(krb5_context ctx, krb5_ccache cc,
                               krb5_principal principal, krb5_keyblock *keyblock,
                               time_t *expire_time, time_t *kdc_time)
{
    krb5_error_code code = 0;
    krb5_creds my_creds;
    krb5_get_init_creds_opt options;

    krb5_get_init_creds_opt_init(&options);

    krb5_get_init_creds_opt_set_default_flags(ctx, NULL, NULL, &options);

    if ((code = krb5_get_init_creds_keyblock(ctx, &my_creds, principal, keyblock,
                0, NULL, &options))) {
        return code;
    }

    if ((code = krb5_cc_initialize(ctx, cc, principal))) {
        krb5_free_cred_contents(ctx, &my_creds);
        return code;
    }

    if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
        krb5_free_cred_contents(ctx, &my_creds);
        return code;
    }

    if (expire_time) {
        *expire_time = (time_t) my_creds.times.endtime;
    }

    if (kdc_time) {
        *kdc_time = (time_t) my_creds.times.starttime;
    }

    krb5_free_cred_contents(ctx, &my_creds);

    return 0;
}

コード例 #2

ファイル: acquire.c プロジェクト: 2014-class/freerouter

krb5_error_code
kcm_ccache_acquire(krb5_context context,
		   kcm_ccache ccache,
		   krb5_creds **credp)
{
    krb5_error_code ret = 0;
    krb5_creds cred;
    krb5_const_realm realm;
    krb5_get_init_creds_opt opt;
    krb5_ccache_data ccdata;
    char *in_tkt_service = NULL;
    int done = 0;

    memset(&cred, 0, sizeof(cred));

    KCM_ASSERT_VALID(ccache);

    /* We need a cached key or keytab to acquire credentials */
    if (ccache->flags & KCM_FLAGS_USE_CACHED_KEY) {
	if (ccache->key.keyblock.keyvalue.length == 0)
	    krb5_abortx(context,
			"kcm_ccache_acquire: KCM_FLAGS_USE_CACHED_KEY without key");
    } else if (ccache->flags & KCM_FLAGS_USE_KEYTAB) {
	if (ccache->key.keytab == NULL)
	    krb5_abortx(context,
			"kcm_ccache_acquire: KCM_FLAGS_USE_KEYTAB without keytab");
    } else {
	kcm_log(0, "Cannot acquire initial credentials for cache %s without key",
		ccache->name);
	return KRB5_FCC_INTERNAL;
    }
	
    HEIMDAL_MUTEX_lock(&ccache->mutex);

    /* Fake up an internal ccache */
    kcm_internal_ccache(context, ccache, &ccdata);

    /* Now, actually acquire the creds */
    if (ccache->server != NULL) {
	ret = krb5_unparse_name(context, ccache->server, &in_tkt_service);
	if (ret) {
	    kcm_log(0, "Failed to unparse service principal name for cache %s: %s",
		    ccache->name, krb5_get_err_text(context, ret));
	    return ret;
	}
    }

    realm = krb5_principal_get_realm(context, ccache->client);

    krb5_get_init_creds_opt_init(&opt);
    krb5_get_init_creds_opt_set_default_flags(context, "kcm", realm, &opt);
    if (ccache->tkt_life != 0)
	krb5_get_init_creds_opt_set_tkt_life(&opt, ccache->tkt_life);
    if (ccache->renew_life != 0)
	krb5_get_init_creds_opt_set_renew_life(&opt, ccache->renew_life);

    if (ccache->flags & KCM_FLAGS_USE_CACHED_KEY) {
	ret = krb5_get_init_creds_keyblock(context,
					   &cred,
					   ccache->client,
					   &ccache->key.keyblock,
					   0,
					   in_tkt_service,
					   &opt);
    } else {
	/* loosely based on lib/krb5/init_creds_pw.c */
	while (!done) {
	    ret = krb5_get_init_creds_keytab(context,
					     &cred,
					     ccache->client,
					     ccache->key.keytab,
					     0,
					     in_tkt_service,
					     &opt);
	    switch (ret) {
	    case KRB5KDC_ERR_KEY_EXPIRED:
		if (in_tkt_service != NULL &&
		    strcmp(in_tkt_service, "kadmin/changepw") == 0) {
		    goto out;
		}

		ret = change_pw_and_update_keytab(context, ccache);
		if (ret)
		    goto out;
		break;
	    case 0:
	    default:
		done = 1;
		break;
	    }
	}
    }

    if (ret) {
	kcm_log(0, "Failed to acquire credentials for cache %s: %s",
		ccache->name, krb5_get_err_text(context, ret));
	if (in_tkt_service != NULL)
	    free(in_tkt_service);
	goto out;
    }

    if (in_tkt_service != NULL)
	free(in_tkt_service);

    /* Swap them in */
    kcm_ccache_remove_creds_internal(context, ccache);

    ret = kcm_ccache_store_cred_internal(context, ccache, &cred, 0, credp);
    if (ret) {
	kcm_log(0, "Failed to store credentials for cache %s: %s",
		ccache->name, krb5_get_err_text(context, ret));
	krb5_free_cred_contents(context, &cred);
	goto out;
    }

out:
    HEIMDAL_MUTEX_unlock(&ccache->mutex);

    return ret;
}