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/*
* Copyright (c) 1997 - 1999 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kadm5_locl.h"
RCSID("$Id$");
kadm5_ret_t
kadm5_c_get_principals(void *server_handle,
const char *expression,
char ***princs,
int *count)
{
kadm5_client_context *context = server_handle;
kadm5_ret_t ret;
krb5_storage *sp;
unsigned char buf[1024];
int32_t tmp;
krb5_data reply;
int i;
*count = 0;
*princs = NULL;
ret = _kadm5_connect(server_handle, 0 /* want_write */);
if (ret)
return ret;
krb5_data_zero(&reply);
sp = krb5_storage_from_mem(buf, sizeof(buf));
if (sp == NULL) {
ret = krb5_enomem(context->context);
goto out_keep_error;
}
ret = krb5_store_int32(sp, kadm_get_princs);
if (ret)
goto out;
ret = krb5_store_int32(sp, expression != NULL ? 1 : 0);
if (ret)
goto out;
if (expression) {
ret = krb5_store_string(sp, expression);
if (ret)
goto out;
}
ret = _kadm5_client_send(context, sp);
if (ret)
goto out_keep_error;
ret = _kadm5_client_recv(context, &reply);
if (ret)
goto out_keep_error;
krb5_storage_free(sp);
sp = krb5_storage_from_data (&reply);
if (sp == NULL) {
ret = krb5_enomem(context->context);
goto out_keep_error;
}
ret = krb5_ret_int32(sp, &tmp);
if (ret == 0)
ret = tmp;
if (ret)
goto out;
ret = krb5_ret_int32(sp, &tmp);
if (ret)
goto out;
*princs = calloc(tmp + 1, sizeof(**princs));
if (*princs == NULL) {
ret = krb5_enomem(context->context);
goto out_keep_error;
}
for (i = 0; i < tmp; i++) {
ret = krb5_ret_string(sp, &(*princs)[i]);
if (ret)
goto out;
}
*count = tmp;
out:
krb5_clear_error_message(context->context);
out_keep_error:
krb5_storage_free(sp);
krb5_data_free(&reply);
return ret;
}
kadm5_ret_t
kadm5_c_iter_principals(void *server_handle,
const char *expression,
int (*cb)(void *, const char *),
void *cbdata)
{
kadm5_client_context *context = server_handle;
kadm5_ret_t ret;
krb5_storage *sp;
unsigned char buf[1024];
int32_t tmp;
krb5_data reply;
size_t i;
int stop = 0;
ret = _kadm5_connect(server_handle, 0 /* want_write */);
if (ret)
return ret;
krb5_data_zero(&reply);
sp = krb5_storage_from_mem(buf, sizeof(buf));
if (sp == NULL) {
ret = krb5_enomem(context->context);
goto out_keep_error;
}
ret = krb5_store_int32(sp, kadm_get_princs);
if (ret)
goto out;
/*
* Our protocol has an int boolean for this operation to indicate whether
* there's an expression. What we'll do here is that instead of sending
* just false or trueish, for online iteration we'll send a number other
* than 0 or 1 -- a magic value > 0 and < INT_MAX.
*
* In response we'll expect multiple replies, each with up to some small
* number of principal names. See kadmin/server.c.
*/
ret = krb5_store_int32(sp, 0x55555555);
if (ret)
goto out;
ret = krb5_store_string(sp, expression ? expression : "");
if (ret)
goto out;
ret = _kadm5_client_send(context, sp);
if (ret)
goto out_keep_error;
ret = _kadm5_client_recv(context, &reply);
if (ret)
goto out_keep_error;
krb5_storage_free(sp);
sp = krb5_storage_from_data (&reply);
if (sp == NULL) {
ret = krb5_enomem(context->context);
goto out_keep_error;
}
ret = krb5_ret_int32(sp, &tmp);
if (ret == 0)
ret = tmp;
if (ret)
goto out;
ret = krb5_ret_int32(sp, &tmp);
if (ret)
goto out;
if (tmp < 0) {
size_t n = -tmp;
int more = 1;
/* The server supports online iteration, hooray! */
while (more) {
/*
* We expect any number of chunks, each having `n' names, except
* the last one would have fewer than `n' (possibly zero, even).
*
* After that we expect one more reply with just a final return
* code.
*/
krb5_data_free(&reply);
krb5_storage_free(sp);
sp = NULL;
ret = _kadm5_client_recv(context, &reply);
if (ret == 0 && (sp = krb5_storage_from_data(&reply)) == NULL)
ret = krb5_enomem(context->context);
if (ret)
goto out;
/* Every chunk begins with a status code */
ret = krb5_ret_int32(sp, &tmp);
if (ret == 0)
ret = tmp;
if (ret)
goto out;
/* We expect up to -tmp principals per reply */
for (i = 0; i < n; i++) {
char *princ = NULL;
ret = krb5_ret_string(sp, &princ);
if (ret == HEIM_ERR_EOF) {
/* This was the last reply */
more = 0;
ret = 0;
break;
}
if (ret)
goto out;
if (!stop) {
stop = cb(cbdata, princ);
if (stop) {
/*
* Tell the server to stop.
*
* We use a NOP for this, but with a payload that says
* "don't reply to the NOP" just in case the NOP
* arrives and is processed _after_ the LISTing has
* finished.
*/
krb5_storage_free(sp);
if ((sp = krb5_storage_emem()) &&
krb5_store_int32(sp, kadm_nop) == 0 &&
krb5_store_int32(sp, 0))
(void) _kadm5_client_send(context, sp);
}
}
free(princ);
}
}
/* Get the final result code */
krb5_data_free(&reply);
krb5_storage_free(sp);
sp = NULL;
ret = _kadm5_client_recv(context, &reply);
if (ret == 0 && (sp = krb5_storage_from_data(&reply)) == NULL)
ret = krb5_enomem(context->context);
if (ret)
goto out;
ret = krb5_ret_int32(sp, &tmp);
if (ret == 0)
ret = tmp;
if (!stop) {
/*
* Send our "interrupt" after the last chunk if we hand't
* interrupted already.
*/
krb5_storage_free(sp);
if ((sp = krb5_storage_emem()) &&
krb5_store_int32(sp, kadm_nop) == 0)
(void) _kadm5_client_send(context, sp);
}
} else {
size_t n = tmp;
/* Old server -- listing not online */
for (i = 0; i < n; i++) {
char *princ = NULL;
ret = krb5_ret_string(sp, &princ);
if (ret)
goto out;
cb(cbdata, princ);
free(princ);
}
}
out:
krb5_clear_error_message(context->context);
out_keep_error:
if (stop)
ret = stop;
krb5_storage_free(sp);
krb5_data_free(&reply);
return ret;
}
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