1 files changed, 125 insertions, 0 deletions
diff --git a/src/dbinit.c b/src/dbinit.c
new file mode 100644
index 0000000..b1b3c54
--- /dev/null
+++ b/src/dbinit.c
@@ -0,0 +1,125 @@
+/*
+ * 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.
+ */
+
+#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"
+
+/** initialize the database from file of 'path' */
+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];
+		value.expire = txt2exp(item[5]);
+		if (value.expire < 0) {
+			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)
+		cyn_leave(dbinit_add_file, 0);
+	else {
+		rc = cyn_leave(dbinit_add_file, 1);
+		if (rc < 0)
+			fprintf(stderr, "unable to commit content of file %s\n", path);
+	}
+	return rc;
+}