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/*
* C Implementation: pptpd
*
* Description:
*
*
* Author: <xeb@mail.ru>, (C) 2009
*
* Copyright: See COPYING file that comes with this distribution
*
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <pthread.h>
#include <stdarg.h>
#include <errno.h>
#include <string.h>
#include <sys/poll.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include "list.h"
#include "pptp_prot.h"
#include "triton/triton.h"
#include "pptpd.h"
#include "log.h"
static struct ctrl_thread_t *threads=NULL;
static int threads_count=0;
int start_server(void)
{
int sock,c_sock;
int r,min_thr,min_cnt;
struct pollfd pfd;
struct sockaddr_in addr;
socklen_t size;
sock=socket (PF_INET, SOCK_STREAM, 0);
if (sock<0)
{
log_error("failed to create socket\n");
return -1;
}
addr.sin_family = AF_INET;
addr.sin_port = htons (PPTP_PORT);
addr.sin_addr.s_addr = htonl (INADDR_ANY);
setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &sock, sizeof(sock));
if (bind (sock, (struct sockaddr *) &addr, sizeof (addr)) < 0)
{
perror("bind");
log_error("failed to bind socket\n");
return -1;
}
if (listen (sock, 1000)<0)
{
log_error("failed to listen socket\n");
return -1;
}
pfd.fd=sock;
pfd.events=POLLIN;
while(1)
{
r=poll(&pfd,1,-1);
if (r<0 && errno!=EINTR)
{
log_error("poll failed\n");
return -2;
}
if (r<=0) continue;
if (!(pfd.revents&POLLIN)) continue;
size=sizeof(addr);
c_sock=accept(sock,(struct sockaddr *)&addr,&size);
if (c_sock<0)
{
log_error("client accept failed\n");
continue;
}
min_thr=0; min_cnt=65536;
for(r=0; r<threads_count; r++)
{
pthread_mutex_lock(&threads[r].lock);
if (threads[r].count<min_cnt)
{
min_cnt=threads[r].count;
min_thr=r;
}
pthread_mutex_unlock(&threads[r].lock);
}
write(threads[min_thr].pipe_fd[1],&c_sock,sizeof(c_sock));
}
}
int start_threads(int cnt)
{
int i;
if (!cnt) cnt=sysconf(_SC_NPROCESSORS_CONF);
threads=malloc(cnt*sizeof(*threads));
memset(threads,0,cnt*sizeof(*threads));
for(i=0; i<cnt; i++)
{
//threads[i].lock=PTHREAD_MUTEX_INITIALIZER;
if (pipe(threads[i].pipe_fd))
{
log_error("failed to create pipe\n");
return -1;
}
if (triton_run((int(*)(void*))ctrl_init,&threads[i]))
{
log_error("triton_run failed\n");
return -1;
}
}
threads_count=cnt;
return 0;
}
int main(int argc,char **argv)
{
log_init(stdout,4,0);
start_threads(0);
start_server();
return EXIT_SUCCESS;
}
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