mainscnt/mains-frequency-counter-stm32
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refactor config

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This commit is contained in:
Wolfgang Hottgenroth 2021-02-10 17:23:59 +01:00
parent a92f225623
commit d8dd841c00
Signed by: wn
GPG Key ID: 6C1E5E531E0D5D7F
2 changed files with 104 additions and 64 deletions
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161
sink/sink20169.c
View File

@ -15,17 +15,25 @@
#include <sha256.h>
config_t cfg;
typedef struct {
const char *deviceId;
const char *location;
const char *sharedSecret;
} t_device;
typedef struct {
config_setting_t *devicesConfig;
config_t cfg;
uint16_t numOfDevices;
t_device *devices;
} t_configHandle;
typedef struct {
t_configHandle *configHandle;
int receiveSockFd;
} t_receiverHandle;
t_receiverHandle receiverHandle;
typedef struct {
config_setting_t *devicesConfig;
t_configHandle *configHandle;
const char *influxUser;
const char *influxPass;
const char *influxServer;
@ -35,30 +43,73 @@ typedef struct {
char influxUrl[1024];
} t_forwarderHandle;
t_forwarderHandle forwarderHandle = {
.influxUser = NULL, .influxPass = NULL, .influxServer = NULL,
.influxPort = 8086, .influxDatabase = NULL, .influxMeasurement = NULL
};
int readConfig(config_t *cfg) {
config_init(cfg);
if (! config_read_file(cfg, "./sink20169.cfg")) {
int initConfig(t_configHandle *configHandle) {
configHandle->numOfDevices = 0;
configHandle->devices = NULL;
config_init(&(configHandle->cfg));
if (! config_read_file(&(configHandle->cfg), "./sink20169.cfg")) {
logmsg(LOG_ERR, "failed to read config file: %s:%d - %s\n",
config_error_file(cfg), config_error_line(cfg),
config_error_text(cfg));
config_destroy(cfg);
config_error_file(&(configHandle->cfg)), config_error_line(&(configHandle->cfg)),
config_error_text(&(configHandle->cfg)));
config_destroy(&(configHandle->cfg));
return -1;
}
config_setting_t *devicesConfig = config_lookup(&(configHandle->cfg), "devices");
if (devicesConfig == NULL) {
logmsg(LOG_ERR, "receiver: no devices configuration found");
return -2;
}
configHandle->numOfDevices = config_setting_length(devicesConfig);
configHandle->devices = (t_device*) malloc(configHandle->numOfDevices * sizeof(t_device));
for (uint16_t i = 0; i < configHandle->numOfDevices; i++) {
if (! config_setting_lookup_string(devicesConfig, "deviceId", &(configHandle->devices[i].deviceId))) {
logmsg(LOG_ERR, "no deviceId for device %d", i);
return -3
}
if (! config_setting_lookup_string(devicesConfig, "location", &(configHandle->devices[i].location))) {
logmsg(LOG_ERR, "no location for device %d", i);
return -4
}
if (! config_setting_lookup_string(devicesConfig, "sharedSecret", &(configHandle->devices[i].sharedSecret))) {
logmsg(LOG_ERR, "no sharedSecret for device %d", i);
return -5
}
if (strlen(configHandle->devices[i].sharedSecret) >= SHA256_BLOCK_SIZE) {
logmsg(LOG_ERR, "Configured sharedsecret for device %d is too long", i);
return -6;
}
logmsg(LOG_INFO, "Device loaded: %d %s %s %s", i,
configHandle->devices[i].deviceId,
configHandle->devices[i].location,
configHandle->devices[i].sharedSecret);
}
return 0;
}
int initReceiver(config_t *cfg, t_receiverHandle *handle) {
handle->devicesConfig = config_lookup(cfg, "devices");
if (handle->devicesConfig == NULL) {
logmsg(LOG_ERR, "receiver: no devices configuration found");
exit(-2);
void deinitConfig(t_configHandle *configHandle) {
config_destroy(&(configHandle->cfg));
if (configHandle->devices) {
free(configHandle->devices);
configHandle->devices = NULL;
}
}
t_device *findDevice(t_configHandle *configHandle, char *deviceId) {
for (uint16_t i = 0; i < configHandle->numOfDevices; i++) {
if (! strcmp(configHandle->devices[i], deviceId)) {
return configHandle->devices[i];
}
}
return NULL;
}
int initReceiver(t_configHandle *configHandle, t_receiverHandle *handle) {
handle->configHandle = configHandle;
struct sockaddr_in servaddr;
@ -69,7 +120,7 @@ int initReceiver(config_t *cfg, t_receiverHandle *handle) {
}
int receivePort = 20169;
config_lookup_int(cfg, "receivePort", &receivePort);
config_lookup_int(&(configHandle->cfg), "receivePort", &receivePort);
if (receivePort < 1 || receivePort > 65535) {
logmsg(LOG_ERR, "illegal receive port configured");
return -2;
@ -108,24 +159,9 @@ int receiveAndVerifyMinuteBuffer(t_receiverHandle *handle, t_minuteBuffer *buf)
logmsg(LOG_INFO, "Illegal packet size: %d", n);
return -1;
}
config_setting_t *deviceConfig = config_setting_get_member(handle->devicesConfig, buf->s.deviceId);
if (deviceConfig == NULL) {
logmsg(LOG_INFO, "Unknown device: %s", buf->s.deviceId);
return -2;
}
const char *sharedSecret;
if (! config_setting_lookup_string(deviceConfig, "sharedSecret", &sharedSecret)) {
logmsg(LOG_ERR, "No sharedsecret configured for device %s", buf->s.deviceId);
return -3;
}
// logmsg(LOG_INFO, "SharedSecret is %s", sharedSecret);
if (strlen(sharedSecret) >= SHA256_BLOCK_SIZE) {
logmsg(LOG_ERR, "Configured sharedsecret for device %s is too long", buf->s.deviceId);
return -4;
}
t_device *device = findDevice(handle->configHandle, buf->s.deviceId);
const char *sharedSecret = device->sharedSecret;
uint8_t receivedHash[SHA256_BLOCK_SIZE];
memcpy(receivedHash, buf->s.hash, SHA256_BLOCK_SIZE);
@ -145,21 +181,24 @@ int receiveAndVerifyMinuteBuffer(t_receiverHandle *handle, t_minuteBuffer *buf)
return 0;
}
int initForwarder(config_t *cfg, t_forwarderHandle *handle) {
handle->devicesConfig = config_lookup(cfg, "devices");
if (handle->devicesConfig == NULL) {
logmsg(LOG_ERR, "no devices configuration found");
exit(-2);
}
config_lookup_string(cfg, "influxUser", &(handle->influxUser));
config_lookup_string(cfg, "influxPass", &(handle->influxPass));
config_lookup_string(cfg, "influxServer", &(handle->influxServer));
config_lookup_string(cfg, "influxDatabase", &(handle->influxDatabase));
config_lookup_string(cfg, "influxMeasurement", &(handle->influxMeasurement));
int initForwarder(t_configHandle *configHandle, t_forwarderHandle *handle) {
handle->configHandle = configHandle;
handle->influxUser = NULL;
handle->influxPass = NULL;
handle->influxServer = NULL;
handle->influxDatabase = NULL;
handle->influxMeasurement = NULL;
config_lookup_string(&(configHandle->cfg), "influxUser", &(handle->influxUser));
config_lookup_string(&(configHandle->cfg), "influxPass", &(handle->influxPass));
config_lookup_string(&(configHandle->cfg), "influxServer", &(handle->influxServer));
config_lookup_string(&(configHandle->cfg), "influxDatabase", &(handle->influxDatabase));
config_lookup_string(&(configHandle->cfg), "influxMeasurement", &(handle->influxMeasurement));
int influxPort = 8086;
config_lookup_int(cfg, "influxPort", &influxPort);
config_lookup_int(&(configHandle->cfg), "influxPort", &influxPort);
if (influxPort < 1 || influxPort > 65535) {
logmsg(LOG_ERR, "illegal influx port configured");
return -2;
@ -223,13 +262,8 @@ int httpPostRequest(char *url, char *user, char *pass, char *payload) {
int forwardMinuteBuffer(t_forwarderHandle *handle, t_minuteBuffer *buf) {
logmsg(LOG_INFO, "DeviceId: %s", buf->s.deviceId);
const char *location;
if (! config_setting_lookup_string(deviceConfig, "location", &location)) {
logmsg(LOG_ERR, "No location configured for device %s", buf->s.deviceId);
return -3;
}
logmsg(LOG_INFO, "Location: %s", location);
t_device *device = findDevice(handle->configHandle, buf->s.deviceId);
const char *location = device->location;
for (uint8_t j = 0; j < SECONDS_PER_MINUTE; j++) {
logmsg(LOG_INFO, "Time: %lu, Frequency: %u", buf->s.events[j].timestamp, buf->s.events[j].frequency);
@ -254,17 +288,22 @@ int forwardMinuteBuffer(t_forwarderHandle *handle, t_minuteBuffer *buf) {
}
int main() {
if (0 != readConfig(&cfg)) {
t_configHandle configHandle;
t_forwarderHandle forwarderHandle;
t_receiverHandle receiverHandle;
if (0 != initConfig(&configHandle)) {
logmsg(LOG_ERR, "error when reading configuration");
exit(-1);
}
if (0 != initReceiver(&cfg, &receiverHandle)) {
if (0 != initReceiver(&configHandle, &receiverHandle)) {
logmsg(LOG_ERR, "error when initializing receiver");
exit(-2);
}
if (0 != initForwarder(&cfg, &forwarderHandle)) {
if (0 != initForwarder(&configHandle, &forwarderHandle)) {
logmsg(LOG_ERR, "error when initializing forwarder");
exit(-2);
}
@ -286,5 +325,5 @@ int main() {
deinitForwarder(&forwarderHandle);
deinitReceiver(&receiverHandle);
config_destroy(&cfg);
deinitConfig(&configHandle);
}

7
sink/sink20169.cfg
View File

@ -7,9 +7,10 @@ influxMeasurement = "mainsfrequency";
receivePort = 20169;
devices = {
MainsCnt01 = {
devices = (
{
deviceId = "MainsCnt01";
sharedSecret = "Uj6*uKDp@8Kvfa4g5eRMLUfVsSuqjxW";
location = "Essen_DE";
};
};
);