path: root/customdhcpcd/src/logwriter.c

#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>

#include "common.h"
#include "dhcp.h"
#include "dhcpcd.h"
#include "errno.h"
#include "logger.h"
#include "logwriter.h"
#include "status.h"

#include "../../common/fbgui.h" // for constants

/*sockets for the logger and the qt-reader */
int sockfd, ns;
int retval = -1;
char socketName[QTSOCKETADDRESSLENGTH];
char interfaceName[IF_NAMESIZE];
char mesg[1024];

void setSocketName(const char * sn) {
	snprintf(socketName, sizeof(socketName), "%s", sn);
}

void setInterfaceName(const char * in){
	snprintf(interfaceName, sizeof(interfaceName), "%s", in);
}

int initQtLoggerSocket() {
	/**
	 * new code. seems to be right.
	 */

	struct sockaddr_un serv_addr;
	fprintf(stdout,"start init \n");
	sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
	if (sockfd < 0) {
		fprintf(stdout,"ERROR opening socket \n");
		retval = sockfd;
		return sockfd;
	}
	serv_addr.sun_family = AF_UNIX;
	strcpy(serv_addr.sun_path, socketName);

	retval = connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr));
	if ( retval < 0)
		fprintf(stdout,"ERROR connecting \n");
	fprintf(stdout,"init Qt Logger Socket done \n");
	return retval;
}

void closeQtLoggerSocket (){
	close(sockfd);
}

/*
void logToQt(char * status, char * substatus, char * msg) {
	char * m = malloc(strlen(interfaceName) + strlen(status) + strlen(substatus) + strlen(msg) +4 );
	strcpy(m,interfaceName);
	strcat(m,";");
	strcat(m,status);
	strcat(m,";");
	strcat(m,substatus);
	strcat(m,";");
	strcat(m,msg);
    sendToQt(m);

    free(m);
}
*/


void sendToQt(log_msg * msg) {
	int n = -1;
	int t;
	int ret;
	const char *tpl = "%s;%d;%d;%s\n";
	char outbuf[DHCP_MESSAGE_SIZE];
	char ack[ACK_SIZE];
	/*
	size_t outbuf_size = sizeof(char) * 4 + // ";" *3 + newline
			sizeof(int) * 2 + // status, substatus
			sizeof(msg->device) + // devicename
			sizeof(msg->msg); // msg
	outbuf = malloc(outbuf_size);
	memset(outbuf, 0, outbuf_size);
	snprintf(outbuf, sizeof(char) * 3 + sizeof(int) * 2 + sizeof(msg->device)
			+ sizeof(msg->msg), tpl, msg->device, msg->status, msg->substatus,
			msg->msg);
	*/
	memset(outbuf, '\0', DHCP_MESSAGE_SIZE);
	ret = snprintf(outbuf, DHCP_MESSAGE_SIZE, tpl, msg->device, msg->status, msg->substatus,
			                        msg->msg);
	if (ret < 1) {
		 syslog(LOG_INFO, "[fbgui] ERROR filling message buffer");
		 return;
	}
	if (outbuf != NULL) {
		n = send(sockfd, outbuf, DHCP_MESSAGE_SIZE, 0);
	}
	//free(outbuf);
	syslog(LOG_INFO, "[fbgui] INFO writing to socket: [%d:%d] %s (%s)",
			msg->status, msg->substatus, msg->msg, msg->device);
	//	fflush(sockfd);
	if (n <= 0) {
		syslog(LOG_ERR, "[fbgui] ERROR writing to socket: [%d:%d] %s (%s)",
				msg->status, msg->substatus, msg->msg, msg->device);
		//		fprintf(stdout, "ERROR writing to socket: %s", msg);
	}
	memset(ack,0,ACK_SIZE);
	if ((t = recv(sockfd, ack, ACK_SIZE, 0)) > 0) {
		syslog(LOG_ERR, "[fbgui] recv ack echo> %s", ack);
		printf("received: %s\n", ack);
	} else {
		if (t < 0)
			syslog(LOG_ERR, "[fbgui] ERROR receiving from socket");
		else
			syslog(LOG_ERR, "[fbgui] ERROR Server closed");
	}
	//usleep(500);
}

void logToQt(int status, int substatus, const char * msg) {
	if (retval >= 0) {
		log_msg lm;
		lm.status = status;
		lm.substatus = substatus;
		snprintf(lm.msg, sizeof(lm.msg), "%s", msg);
		snprintf(lm.device, sizeof(lm.device), "%s", interfaceName);
		sendToQt(&lm);
	}
}

void logSendToQt(int type) {
    switch(type) {
    case DHCP_DISCOVER:
    	logToQt(LOG_INFO, DHCP_DISCOVER, "send discover");
    	break;
    case DHCP_OFFER:
    	logToQt(LOG_INFO, DHCP_OFFER, "send offer");
    	break;
    case DHCP_REQUEST:
    	logToQt(LOG_INFO, DHCP_REQUEST, "send request");
    	break;
    case DHCP_DECLINE:
    	logToQt(LOG_INFO, DHCP_DECLINE, "send decline");
    	break;
    case DHCP_ACK:
    	logToQt(LOG_INFO, DHCP_ACK, "send ack");
    	break;
    case DHCP_NAK:
    	logToQt(LOG_INFO, DHCP_NAK, "send nak");
    	break;
    case DHCP_RELEASE:
    	logToQt(LOG_INFO, DHCP_RELEASE, "send release");
    	break;
    case DHCP_INFORM:
    	logToQt(LOG_INFO, DHCP_INFORM, "send inform");
    	break;
    default :
    	break;
    }
}

void logLoggerToQt(int level, const char *fmt, va_list args) {
    vsnprintf(mesg, sizeof(mesg), fmt, args);
    strcat(mesg, "\n");
    logToQt(level, DHCPCD_LOG, mesg);
}

void logGatewayToFile(const interface_t *iface, const dhcp_t *dhcp) {
	FILE *f;
	route_t *route;
	char path[QTSOCKETADDRESSLENGTH];

	strcpy(path, DEFAULT_GATEWAY_INFO_LOCATION);
	strcat(path, iface->name);

	syslog (LOG_INFO, "[fbgui] try to open file: %s", path);

	logger(LOG_DEBUG, "writing %s", iface->infofile);
	if ((f = fopen(path, "w")) == NULL) {
		logger(LOG_ERR, "fopen `%s': %s", path, strerror(errno));
	}

	if (dhcp->routes) {
		bool doneone = false;
		STAILQ_FOREACH (route, dhcp->routes, entries) {
			if (route->destination.s_addr == 0) {
				if (doneone)
					fprintf(f, ",");
				fprintf(f, "%s", inet_ntoa(route->gateway));
				doneone = true;
			}
		}
		fprintf(f, "\n");
	}
	fclose(f);
}