#988 add json configuration file

New configuration file at /opt/opengnsys/cfg/ogserver.json

1 files changed, 165 insertions, 0 deletions

diff --git a/sources/cfg.c b/sources/cfg.c
new file mode 100644
index 0000000..05ba80a
--- /dev/null
+++ b/sources/cfg.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2020 Soleta Networks <info@soleta.eu>
+ *
+ * This program is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU Affero General Public License as published by the
+ * Free Software Foundation, version 3.
+ */
+
+#include "json.h"
+#include "cfg.h"
+#include "ogAdmServer.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <syslog.h>
+
+static int parse_json_rest(struct og_server_cfg *cfg, json_t *element)
+{
+	const char *key;
+	json_t *value;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "ip")) {
+			if (og_json_parse_string(value, &cfg->rest.ip) < 0)
+				return -1;
+		} else if (!strcmp(key, "port")) {
+			if (og_json_parse_string(value, &cfg->rest.port) < 0)
+				return -1;
+		} else if (!strcmp(key, "api_token")) {
+			if (og_json_parse_string(value, &cfg->rest.api_token) < 0)
+				return -1;
+		} else {
+			syslog(LOG_ERR, "unknown key `%s' in rest\n", key);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int parse_json_db(struct og_server_cfg *cfg, json_t *element)
+{
+	const char *key;
+	json_t *value;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "ip")) {
+			if (og_json_parse_string(value, &cfg->db.ip) < 0)
+				return -1;
+		} else if (!strcmp(key, "user")) {
+			if (og_json_parse_string(value, &cfg->db.user) < 0)
+				return -1;
+		} else if (!strcmp(key, "pass")) {
+			if (og_json_parse_string(value, &cfg->db.pass) < 0)
+				return -1;
+		} else if (!strcmp(key, "name")) {
+			if (og_json_parse_string(value, &cfg->db.name) < 0)
+				return -1;
+		} else {
+			syslog(LOG_ERR, "unknown key `%s' in db\n", key);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int parse_json_wol(struct og_server_cfg *cfg, json_t *element)
+{
+	const char *key;
+	json_t *value;
+
+	json_object_foreach(element, key, value) {
+		if (!strcmp(key, "interface")) {
+			if (og_json_parse_string(value, &cfg->wol.interface) < 0)
+				return -1;
+		} else {
+			syslog(LOG_ERR, "unknown key `%s' in wol\n", key);
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+#define OG_SERVER_CFG_REST	(1 << 0)
+#define OG_SERVER_CFG_DB	(1 << 1)
+#define OG_SERVER_CFG_WOL	(1 << 2)
+
+int parse_json_config(const char *filename, struct og_server_cfg *cfg)
+{
+	json_t *root, *value;
+	uint32_t flags = 0;
+	json_error_t err;
+	const char *key;
+	char buf[4096];
+	int fd, ret;
+
+	fd = open(filename, O_RDONLY);
+	if (!fd) {
+		syslog(LOG_ERR, "Cannot open %s", filename);
+		return -1;
+	}
+
+	ret = read(fd, buf, sizeof(buf));
+	if (ret < 0 || ret == sizeof(buf)) {
+		syslog(LOG_ERR, "Cannot read from %s", filename);
+		return -1;
+	}
+
+	root = json_loads(buf, 0, &err);
+	if (!root) {
+		syslog(LOG_ERR, "Cannot parse malformed json file");
+		return -1;
+	}
+
+	json_object_foreach(root, key, value) {
+		if (!strcmp(key, "rest")) {
+			if (parse_json_rest(cfg, value) < 0)
+				return -1;
+
+			flags |= OG_SERVER_CFG_REST;
+		} else if (!strcmp(key, "wol")) {
+			if (parse_json_wol(cfg, value) < 0)
+				return -1;
+
+			flags |= OG_SERVER_CFG_WOL;
+		} else if (!strcmp(key, "database")) {
+			if (parse_json_db(cfg, value) < 0)
+				return -1;
+
+			flags |= OG_SERVER_CFG_DB;
+		} else {
+			syslog(LOG_ERR, "unknown key `%s' in %s\n",
+			       key, filename);
+			ret = -1;
+		}
+	}
+
+	if ((flags & OG_SERVER_CFG_REST) &&
+	    (flags & OG_SERVER_CFG_DB) &&
+	    (flags & OG_SERVER_CFG_WOL)) {
+		ret = 0;
+	} else {
+		syslog(LOG_ERR, "Missing attributes in json file");
+		ret = -1;
+	}
+
+	json_decref(root);
+
+	return ret;
+}
+
+void from_json_to_legacy(struct og_server_cfg *cfg)
+{
+	snprintf(servidoradm, sizeof(servidoradm), cfg->rest.ip);
+	snprintf(puerto, sizeof(puerto), cfg->rest.port);
+	snprintf(usuario, sizeof(usuario), cfg->db.user);
+	snprintf(pasguor, sizeof(pasguor), cfg->db.pass);
+	snprintf(datasource, sizeof(datasource), cfg->db.ip);
+	snprintf(catalog, sizeof(catalog), cfg->db.name);
+	snprintf(interface, sizeof(interface), cfg->wol.interface);
+	snprintf(auth_token, sizeof(auth_token), cfg->rest.api_token);
+}