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- /*
- * The MySensors Arduino library handles the wireless radio link and protocol
- * between your home built sensors/actuators and HA controller of choice.
- * The sensors forms a self healing radio network with optional repeaters. Each
- * repeater and gateway builds a routing tables in EEPROM which keeps track of the
- * network topology allowing messages to be routed to nodes.
- *
- * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
- * Copyright (C) 2013-2018 Sensnology AB
- * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors
- *
- * Documentation: http://www.mysensors.org
- * Support Forum: http://forum.mysensors.org
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * Based on mosquitto project, Copyright (c) 2012 Roger Light <roger@atchoo.org>
- */
-
- #include "config.h"
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include <sys/stat.h>
- #include "log.h"
-
- static int _config_create(const char *config_file);
- static int _config_parse_int(char *token, const char *name, int *value);
- static int _config_parse_string(char *token, const char *name, char **value);
-
- int config_parse(const char *config_file)
- {
- FILE *fptr;
- char buf[1024];
- struct stat fileInfo;
-
- if (stat(config_file, &fileInfo) != 0) {
- //File does not exist. Create it.
- logInfo("Config file %s does not exist, creating new file.\n", config_file);
- _config_create(config_file);
- }
-
- fptr = fopen(config_file, "rt");
- if (!fptr) {
- logError("Error opening config file \"%s\".\n", config_file);
- return -1;
- }
-
- conf.verbose = 7;
- conf.log_pipe = 0;
- conf.log_pipe_file = NULL;
- conf.syslog = 0;
- conf.eeprom_file = NULL;
- conf.eeprom_size = 0;
- conf.soft_hmac_key = NULL;
- conf.soft_serial_key = NULL;
- conf.aes_key = NULL;
-
- while (fgets(buf, 1024, fptr)) {
- if (buf[0] != '#' && buf[0] != 10 && buf[0] != 13) {
- while (buf[strlen(buf)-1] == 10 || buf[strlen(buf)-1] == 13) {
- buf[strlen(buf)-1] = 0;
- }
-
- if (!strncmp(buf, "verbose=", 8)) {
- char *verbose = NULL;
- if (_config_parse_string(&(buf[8]), "verbose", &verbose)) {
- fclose(fptr);
- return -1;
- } else {
- if (!strncmp(verbose, "err", 3)) {
- conf.verbose = 3;
- } else if (!strncmp(verbose, "warn", 4)) {
- conf.verbose = 4;
- } else if (!strncmp(verbose, "notice", 6)) {
- conf.verbose = 5;
- } else if (!strncmp(verbose, "info", 4)) {
- conf.verbose = 6;
- } else if (!strncmp(verbose, "debug", 5)) {
- conf.verbose = 7;
- } else {
- logError("Invalid value for verbose in configuration.\n");
- fclose(fptr);
- free(verbose);
- return -1;
- }
- free(verbose);
- }
- } else if (!strncmp(buf, "log_file=", 9)) {
- if (_config_parse_int(&(buf[9]), "log_file", &conf.log_file)) {
- fclose(fptr);
- return -1;
- } else {
- if (conf.log_file != 0 && conf.log_file != 1) {
- logError("log_file must be 1 or 0 in configuration.\n");
- fclose(fptr);
- return -1;
- }
- }
- } else if (!strncmp(buf, "log_filepath=", 13)) {
- if (_config_parse_string(&(buf[13]), "log_filepath", &conf.log_filepath)) {
- fclose(fptr);
- return -1;
- }
- } else if (!strncmp(buf, "log_pipe=", 9)) {
- if (_config_parse_int(&(buf[9]), "log_pipe", &conf.log_pipe)) {
- fclose(fptr);
- return -1;
- } else {
- if (conf.log_pipe != 0 && conf.log_pipe != 1) {
- logError("log_pipe must be 1 or 0 in configuration.\n");
- fclose(fptr);
- return -1;
- }
- }
- } else if (!strncmp(buf, "log_pipe_file=", 14)) {
- if (_config_parse_string(&(buf[14]), "log_pipe_file", &conf.log_pipe_file)) {
- fclose(fptr);
- return -1;
- }
- } else if (!strncmp(buf, "syslog=", 7)) {
- if (_config_parse_int(&(buf[7]), "syslog", &conf.syslog)) {
- fclose(fptr);
- return -1;
- } else {
- if (conf.syslog != 0 && conf.syslog != 1) {
- logError("syslog must be 1 or 0 in configuration.\n");
- fclose(fptr);
- return -1;
- }
- }
- } else if (!strncmp(buf, "eeprom_file=", 12)) {
- if (_config_parse_string(&(buf[12]), "eeprom_file", &conf.eeprom_file)) {
- fclose(fptr);
- return -1;
- }
- } else if (!strncmp(buf, "eeprom_size=", 12)) {
- if (_config_parse_int(&(buf[12]), "eeprom_size", &conf.eeprom_size)) {
- fclose(fptr);
- return -1;
- } else {
- if (conf.eeprom_size <= 0) {
- logError("eeprom_size value must be greater than 0 in configuration.\n");
- fclose(fptr);
- return -1;
- }
- }
- } else if (!strncmp(buf, "soft_hmac_key=", 14)) {
- if (_config_parse_string(&(buf[14]), "soft_hmac_key", &conf.soft_hmac_key)) {
- fclose(fptr);
- return -1;
- }
- } else if (!strncmp(buf, "soft_serial_key=", 16)) {
- if (_config_parse_string(&(buf[16]), "soft_serial_key", &conf.soft_serial_key)) {
- fclose(fptr);
- return -1;
- }
- } else if (!strncmp(buf, "aes_key=", 8)) {
- if (_config_parse_string(&(buf[8]), "aes_key", &conf.aes_key)) {
- fclose(fptr);
- return -1;
- }
- } else {
- logWarning("Unknown config option \"%s\".\n", buf);
- }
- }
- }
- fclose(fptr);
-
- if (!conf.eeprom_file) {
- logError("No eeprom_file found in configuration.\n");
- return -1;
- }
-
- if (conf.log_file && !conf.log_filepath) {
- logError("log_filepath must be set if you enable log_file in configuration.\n");
- return -1;
- }
-
- if (conf.log_pipe && !conf.log_pipe_file) {
- logError("log_pipe_file must be set if you enable log_pipe in configuration.\n");
- return -1;
- }
-
- return 0;
- }
-
- void config_cleanup(void)
- {
- if (conf.log_filepath) {
- free(conf.log_filepath);
- }
- if (conf.log_pipe_file) {
- free(conf.log_pipe_file);
- }
- if (conf.eeprom_file) {
- free(conf.eeprom_file);
- }
- if (conf.soft_hmac_key) {
- free(conf.soft_hmac_key);
- }
- if (conf.soft_serial_key) {
- free(conf.soft_serial_key);
- }
- if (conf.aes_key) {
- free(conf.aes_key);
- }
- }
-
- int _config_create(const char *config_file)
- {
- FILE *myFile;
- int ret;
-
- const char default_conf[] = "# Logging\n" \
- "# Verbosity: debug,info,notice,warn,err\n" \
- "verbose=debug\n" \
- "\n" \
- "# Enable logging to a file.\n" \
- "log_file=0\n" \
- "# Log file path.\n" \
- "log_filepath=/tmp/mysgw.log\n" \
- "\n" \
- "# Enable logging to a named pipe.\n" \
- "# Use this option to view your gateway's log messages\n" \
- "# from the log_pipe_file defined bellow.\n" \
- "# To do so, run the following command on another terminal:\n" \
- "# cat \"log_pipe_file\"\n" \
- "log_pipe=0\n" \
- "log_pipe_file=/tmp/mysgw.pipe\n" \
- "\n" \
- "# Enable logging to syslog.\n" \
- "syslog=0\n" \
- "\n" \
- "# EEPROM settings\n" \
- "eeprom_file=/etc/mysensors.eeprom\n" \
- "eeprom_size=1024\n" \
- "\n" \
- "# Software signing settings\n" \
- "# Note: The gateway must have been built with signing\n" \
- "# support to use the options below.\n" \
- "#\n" \
- "# To generate a HMAC key run mysgw with: --gen-soft-hmac-key\n" \
- "# copy the new key in the line below and uncomment it.\n" \
- "#soft_hmac_key=\n" \
- "# To generate a serial key run mysgw with: --gen-soft-serial-key\n" \
- "# copy the new key in the line below and uncomment it.\n" \
- "#soft_serial_key=\n" \
- "\n" \
- "# Encryption settings\n" \
- "# Note: The gateway must have been built with encryption\n" \
- "# support to use the options below.\n" \
- "#\n" \
- "# To generate a AES key run mysgw with: --gen-aes-key\n" \
- "# copy the new key in the line below and uncomment it.\n" \
- "#aes_key=\n";
-
- myFile = fopen(config_file, "w");
- if (!myFile) {
- logError("Unable to create config file %s.\n", config_file);
- return -1;
- }
- ret = fputs(default_conf, myFile);
- fclose(myFile);
-
- return (ret > 0);
- }
-
- int _config_parse_int(char *token, const char *name, int *value)
- {
- if (token) {
- *value = atoi(token);
- } else {
- logError("Empty %s value in configuration.\n", name);
- return 1;
- }
-
- return 0;
- }
-
- int _config_parse_string(char *token, const char *name, char **value)
- {
- if (token) {
- if (*value) {
- logError("Duplicate %s value in configuration.\n", name);
- return 1;
- }
- while (token[0] == ' ' || token[0] == '\t') {
- token++;
- }
- *value = strdup(token);
- if (!*value) {
- logError("Out of memory.\n");
- return 1;
- }
- } else {
- logError("Empty %s value in configuration.\n", name);
- return 1;
- }
- return 0;
- }
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