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/*
* Copyright (C) 2018 "IoT.bzh"
* Author José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/******************************************************************************/
/******************************************************************************/
/* READING DATABASE RULE FILES FOR INITIALISATION */
/******************************************************************************/
/******************************************************************************/
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include <errno.h>
#include "data.h"
#include "cyn.h"
#include "expire.h"
#include "dbinit.h"
/* see dbinit.h */
int dbinit_add_file(const char *path)
{
int rc, lino;
char *item[10];
char buffer[2048];
data_key_t key;
data_value_t value;
FILE *f;
/* enter critical section */
rc = cyn_enter(dbinit_add_file);
if (rc < 0)
return rc;
/* open the file */
f = fopen(path, "r");
if (f == NULL) {
rc = -errno;
fprintf(stderr, "can't open file %s\n", path);
goto error;
}
/* read lines of the file */
lino = 0;
while(fgets(buffer, sizeof buffer, f)) {
/* parse the line */
lino++;
item[0] = strtok(buffer, " \t\n\r");
item[1] = strtok(NULL, " \t\n\r");
item[2] = strtok(NULL, " \t\n\r");
item[3] = strtok(NULL, " \t\n\r");
item[4] = strtok(NULL, " \t\n\r");
item[5] = strtok(NULL, " \t\n\r");
item[6] = strtok(NULL, " \t\n\r");
/* skip empty lines and comments */
if (item[0] == NULL)
continue;
if (item[0][0] == '#')
continue;
/* check items of the rule */
if (item[1] == NULL || item[2] == NULL
|| item[3] == NULL || item[4] == NULL
|| item[5] == NULL) {
fprintf(stderr, "field missing (%s:%d)\n", path, lino);
rc = -EINVAL;
goto error2;
}
if (item[6] != NULL && item[6][0] != '#') {
fprintf(stderr, "extra field (%s:%d)\n", path, lino);
rc = -EINVAL;
goto error2;
}
/* create the key and value of the rule */
key.client = item[0];
key.session = item[1];
key.user = item[2];
key.permission = item[3];
value.value = item[4];
if (!txt2exp(item[5], &value.expire)) {
fprintf(stderr, "bad expiration %s (%s:%d)\n", item[5], path, lino);
rc = -EINVAL;
goto error2;
}
/* record the rule */
rc = cyn_set(&key, &value);
if (rc < 0) {
fprintf(stderr, "can't set (%s:%d)\n", path, lino);
exit(1);
}
}
if (!feof(f)) {
rc = -errno;
fprintf(stderr, "error while reading file %s\n", path);
goto error2;
}
rc = 0;
error2:
fclose(f);
error:
if (rc)
/* cancel changes if error occured */
cyn_leave(dbinit_add_file, 0);
else {
/* commit the changes */
rc = cyn_leave(dbinit_add_file, 1);
if (rc < 0)
fprintf(stderr, "unable to commit content of file %s\n", path);
}
return rc;
}
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