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 "info.h"
#include "logger.h"
#include "logwriter.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 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) {
		logger(LOG_INFO, "[fbgui] ERROR filling message buffer");
		//syslog(LOG_INFO, "[fbgui] ERROR filling message buffer");
		return;
	}
	if (outbuf != NULL) {
		n = send(sockfd, outbuf, DHCP_MESSAGE_SIZE, 0);
	}
	syslog(LOG_INFO, "[fbgui] INFO writing to socket: [%d:%d] %s (%s)",
			msg->status, msg->substatus, msg->msg, msg->device);

	if (n <= 0) {
		logger(LOG_ERR, "[fbgui] ERROR writing to socket: [%d:%d] %s (%s)",
				msg->status, msg->substatus, msg->msg, msg->device);
		//syslog(LOG_ERR, "[fbgui] ERROR writing to socket: [%d:%d] %s (%s)",
		//		msg->status, msg->substatus, msg->msg, msg->device);
	}
	/*
	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");
	}
	*/
}

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, ...) {
    //  Format string into buffer
    va_list argptr;
    va_start (argptr, fmt);
    int size = 255 + 2;
    char *string = (char *) malloc (size);
    int required = vsnprintf (string, size, fmt, argptr);
    if (required >= size)
      {
        size = required + 2;
        string = (char *) realloc (string, size);
        vsnprintf (string, size, fmt, argptr);
      }
    va_end (argptr);

	strcat(string, "\n");
	logToQt(level, DHCPCD_LOG, string);
}

static void print_addresses (FILE *f, const struct address_head *addresses)
{
	const address_t *addr;

	STAILQ_FOREACH (addr, addresses, entries) {
		fprintf (f, "%s", inet_ntoa (addr->address));
		if (STAILQ_NEXT (addr, entries))
			fprintf (f, " ");
	}
}
void logGatewayToFile(const interface_t *iface, const dhcp_t *dhcp) {
	/*void logGatewayToFile(const interface_t iface, const dhcp_t *dhcp,
		const options_t options)*/
	//char path[QTSOCKETADDRESSLENGTH];

	/*
	 strcpy(path, DEFAULT_GATEWAY_INFO_LOCATION);
	 strcat(path, iface.name);
	 strcpy(iface.infofile, path);
	 options.test = false;
	 syslog(LOG_INFO, "[fbgui] try to open file: %s", iface.infofile);
	 write_info(&iface, dhcp, &options, true);
	 */
	FILE *f;
	route_t *route;
	char path[QTSOCKETADDRESSLENGTH];

	strcpy(path, DEFAULT_INTERFACE_CONF_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));
		//TODO: exit/return ..
		return;
	}

	if (dhcp->address.s_addr) {
		struct in_addr n;
		n.s_addr = dhcp->address.s_addr & dhcp->netmask.s_addr;
		fprintf(f, "IPADDR='%s'\n", inet_ntoa(dhcp->address));
		fprintf(f, "NETMASK='%s'\n", inet_ntoa(dhcp->netmask));
		fprintf(f, "NETWORK='%s'\n", inet_ntoa(n));
		fprintf(f, "BROADCAST='%s'\n", inet_ntoa(dhcp->broadcast));
	}

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

		doneone = false;
		fprintf(f, "GATEWAYS='");
		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");
	}

	fprintf(f, "HOSTNAME='%s", dhcp->hostname);
	fprintf(f, "'\n");
	fprintf(f, "DNSSEARCH='%s", dhcp->dnssearch);
	fprintf(f, "'\n");

	if (dhcp->dnsservers) {
		fprintf(f, "DNSSERVERS='");
		print_addresses(f, dhcp->dnsservers);
		fprintf(f, "'\n");
	}
	fprintf(f, "INTERFACE='%s", iface->name);
		fprintf(f, "'\n");
	if (iface->clientid_len > 0) {
		fprintf(f, "CLIENTID='%s'\n", hwaddr_ntoa(iface->clientid,
				iface->clientid_len));
	}
	fprintf(f, "DHCPCHADDR='%s'\n", hwaddr_ntoa(iface->hwaddr, iface->hwlen));
	fclose(f);
}