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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
Copyright (C) 2011 Red Hat
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "util/util.h"
#include "sss_client/sss_cli.h"
#include "sss_client/sudo/sss_sudo.h"
#include "sss_client/sudo/sss_sudo_private.h"
static int sss_sudo_create_query(uid_t uid,
const char *username,
uint8_t **_query,
size_t *_query_len);
static void sss_sudo_free_rules(unsigned int num_rules,
struct sss_sudo_rule *rules);
static void sss_sudo_free_attrs(unsigned int num_attrs,
struct sss_sudo_attr *attrs);
static int sss_sudo_send_recv_generic(enum sss_cli_command command,
uid_t uid,
const char *username,
uint32_t *_error,
char **_domainname,
struct sss_sudo_result **_result)
{
struct sss_cli_req_data request;
uint8_t *query_buf = NULL;
size_t query_len = 0;
uint8_t *reply_buf = NULL;
size_t reply_len = 0;
int errnop = 0;
int ret = 0;
/* create query */
ret = sss_sudo_create_query(uid, username, &query_buf, &query_len);
if (ret != EOK) {
goto done;
}
request.len = query_len;
request.data = (const void*)query_buf;
/* send query and receive response */
errnop = 0;
ret = sss_sudo_make_request(command, &request,
&reply_buf, &reply_len, &errnop);
if (ret != SSS_STATUS_SUCCESS) {
ret = errnop;
goto done;
}
/* parse structure */
ret = sss_sudo_parse_response((const char*)reply_buf, reply_len,
_domainname, _result, _error);
done:
free(query_buf);
free(reply_buf);
return ret;
}
int sss_sudo_send_recv(uid_t uid,
const char *username,
const char *domainname,
uint32_t *_error,
struct sss_sudo_result **_result)
{
int ret;
if (username == NULL || strlen(username) == 0) {
return EINVAL;
}
/* send query and receive response */
ret = sss_sudo_send_recv_generic(SSS_SUDO_GET_SUDORULES, uid, username,
_error, NULL, _result);
return ret;
}
int sss_sudo_send_recv_defaults(uid_t uid,
const char *username,
uint32_t *_error,
char **_domainname,
struct sss_sudo_result **_result)
{
if (username == NULL || strlen(username) == 0) {
return EINVAL;
}
return sss_sudo_send_recv_generic(SSS_SUDO_GET_DEFAULTS, uid, username,
_error, _domainname, _result);
}
static int sss_sudo_create_query(uid_t uid, const char *username,
uint8_t **_query, size_t *_query_len)
{
uint8_t *data = NULL;
size_t username_len = strlen(username) * sizeof(char) + 1;
size_t data_len = sizeof(uid_t) + username_len;
size_t offset = 0;
data = (uint8_t*)malloc(data_len * sizeof(uint8_t));
if (data == NULL) {
return ENOMEM;
}
SAFEALIGN_SET_VALUE(data, uid, uid_t, &offset);
memcpy(data + offset, username, username_len);
*_query = data;
*_query_len = data_len;
return EOK;
}
int sss_sudo_get_values(struct sss_sudo_rule *e,
const char *attrname, char ***_values)
{
struct sss_sudo_attr *attr = NULL;
char **values = NULL;
int i, j;
for (i = 0; i < e->num_attrs; i++) {
attr = e->attrs + i;
if (strcasecmp(attr->name, attrname) == 0) {
values = calloc(attr->num_values + 1, sizeof(char*));
if (values == NULL) {
return ENOMEM;
}
for (j = 0; j < attr->num_values; j++) {
values[j] = strdup(attr->values[j]);
if (values[j] == NULL) {
sss_sudo_free_values(values);
return ENOMEM;
}
}
values[attr->num_values] = NULL;
break;
}
}
if (values == NULL) {
return ENOENT;
}
*_values = values;
return EOK;
}
void sss_sudo_free_values(char **values)
{
char **value = NULL;
if (values == NULL) {
return;
}
for (value = values; *value != NULL; value++) {
free(*value);
}
free(values);
}
void sss_sudo_free_result(struct sss_sudo_result *result)
{
if (result == NULL) {
return;
}
sss_sudo_free_rules(result->num_rules, result->rules);
free(result);
}
void sss_sudo_free_rules(unsigned int num_rules, struct sss_sudo_rule *rules)
{
struct sss_sudo_rule *rule = NULL;
int i;
if (rules == NULL) {
return;
}
for (i = 0; i < num_rules; i++) {
rule = rules + i;
sss_sudo_free_attrs(rule->num_attrs, rule->attrs);
rule->attrs = NULL;
}
free(rules);
}
void sss_sudo_free_attrs(unsigned int num_attrs, struct sss_sudo_attr *attrs)
{
struct sss_sudo_attr *attr = NULL;
int i, j;
if (attrs == NULL) {
return;
}
for (i = 0; i < num_attrs; i++) {
attr = attrs + i;
free(attr->name);
attr->name = NULL;
for (j = 0; j < attr->num_values; j++) {
free(attr->values[j]);
attr->values[j] = NULL;
}
free(attr->values);
}
free(attrs);
}
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