#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <signal.h>
#include <stdio.h>
#define saddr ntohl(sin.sin_addr.s_addr)
#define PORT 4040
#define FILENAME "/home/mordor/msg"
extern errno;
int cfd, s2;
void aborting();
main(argc, argv)
int argc;
char *argv[];
{
int s,i;
int fd;
int len = sizeof(struct sockaddr_in);
struct servent *ps;
struct sockaddr_in sin;
signal(SIGPIPE,SIG_IGN);
if((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
exit(1);
}
sin.sin_addr.s_addr = INADDR_ANY;
sin.sin_port = htons(PORT);
i = 1;
setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(int));
if(bind(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
exit(1);
}
listen(s, 5);
while(1) {
len = sizeof(struct sockaddr_in);
if((fd = accept(s, (struct sockaddr *) &sin, &len)) < 0) {
exit(1);
}
log("connection accepted from: %d.%d.%d.%d\n",
(unsigned)(saddr)>>24,
(saddr & 0x00ff0000)>>16,
(saddr & 0x0000ff00)>>8,
(saddr & 0x000000ff));
if(fork()) {
cfd = fd;
if(fd > 16) {
printf("Descriptor too large.\n");
exit(0);
}
signal(SIGPIPE,aborting);
client();
}
close(fd);
}
}
client()
{
int readfds;
char buf[1024], address[30], port[10];
int len=1, i=0, j=0;
unsigned long addr;
struct sockaddr_in sin2;
int s2_flag, cfd_flag, readfds_flag;
char outbuf[8192];
FILE *fp;
ioctl(cfd, FIONBIO, &len);
fp = fopen(FILENAME, "r");
if(!fp) aborting();
fread(outbuf, 8192, 1, fp);
fclose(fp);
write_msg(outbuf);
sleep(4);
aborting();
}
write_msg(str)
char *str;
{
write(cfd, str, strlen(str));
}
read_msg(str,slen)
char *str;
int slen;
{
int readfds;
int num=0, len;
char ch;
do {
readfds = 1<<cfd;
while(!select(16, &readfds, 0, 0, 0)) ;
len = read(cfd, &ch, 1);
if(len == 0) aborting();
if(ch == 8 || ch == 127) num--;
else if(ch == 10 || num==slen-1) ch = 0;
if(ch != 13 && ch != 8 && ch != 127) str[num++] = ch;
} while(ch);
}
void aborting(arg)
int arg;
{
int i=0;
write_msg("Connection dropped.\n");
signal(SIGPIPE,SIG_IGN);
ioctl(cfd, FIONBIO, &i);
ioctl(s2, FIONBIO, &i);
close(cfd);
close(s2);
exit(0);
}
log(fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9)
char *fmt;
int a1,a2,a3,a4,a5,a6,a7,a8,a9;
{
FILE *fp;
if((fp = fopen("/home/auth/mordor/log/msg.log", "a")) == NULL) return;
fprintf(fp, fmt, a1, a2, a3, a4, a5, a6, a7, a8, a9);
fclose(fp);
}