bind: cannot assign requested address openvz - c

Question

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <netdb.h>
#include <time.h>
#include <string.h>
#ifdef STRERROR
extern char *sys_errlist[];
extern int sys_nerr;
char *undef = "Undefined error";
char *strerror(error)
int error;
{
if (error > sys_nerr)
return undef;
return sys_errlist[error];
}
#endif
#define CIAO_PS "bfi_2"
main(argc, argv)
int argc;
char **argv;
{
int lsock, csock, osock;
FILE *cfile;
char buf[4096];
struct sockaddr_in laddr, caddr, oaddr;
int caddrlen = sizeof(caddr);
fd_set fdsr, fdse;
struct hostent *h;
struct servent *s;
int nbyt;
unsigned long a;
unsigned short oport;
int i, j, argvlen;
char *bfiargv[argc+1];
char *fintops = CIAO_PS ;
if( argc < 4 )
{
fprintf(stderr,"Usage: %s localport remoteport remotehost fakeps\n",argv[0]);
return 30;
}
for( i = 0; i < argc; i++ )
{
bfiargv[i] = malloc(strlen(argv[i]) + 1);
strncpy(bfiargv[i], argv[i], strlen(argv[i]) + 1);
}
bfiargv[argc] = NULL;
argvlen = strlen(argv[0]);
if( argvlen < strlen(CIAO_PS) )
{
printf("Se vuoi fregare davvero ps vedi di lanciarmi almeno come superFunkyDataPipe !\n") ;
abort();
}
if(bfiargv[4]) fintops=bfiargv[4] ;
strncpy(argv[0], fintops, strlen(fintops));
for( i = strlen(fintops); i < argvlen; i++ )
argv[0][i] = '\0';
for( i = 1; i < argc; i++ )
{
argvlen = strlen(argv[i]);
for(j=0; j <= argvlen; j++)
argv[i][j] = '\0';
}
a = inet_addr(argv[3]);
if( !(h = gethostbyname(bfiargv[3])) && !(h = gethostbyaddr(&a, 4, AF_INET)) )
{
perror(bfiargv[3]);
return 25;
}
oport = atol(bfiargv[2]);
laddr.sin_port = htons((unsigned short)(atol(bfiargv[1])));
if( (lsock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1 )
{
perror("socket");
return 20;
}
laddr.sin_family = htons(AF_INET);
// laddr.sin_addr.s_addr = htonl(0);
laddr.sin_addr.s_addr = inet_addr("128.199.167.13");
if( bind(lsock, &laddr, sizeof(laddr)) )
{
perror("bind");
return 20;
}
if( listen(lsock, 1) )
{
perror("listen");
return 20;
}
if( (nbyt = fork()) == -1 )
{
perror("fork");
return 20;
}
if (nbyt > 0)
return 0;
setsid();
while( (csock = accept(lsock, &caddr, &caddrlen)) != -1 )
{
cfile = fdopen(csock,"r+");
if( (nbyt = fork()) == -1 )
{
fprintf(cfile, "500 fork: %s\n", strerror(errno));
shutdown(csock,2);
fclose(cfile);
continue;
}
if (nbyt == 0)
goto gotsock;
fclose(cfile);
while (waitpid(-1, NULL, WNOHANG) > 0);
}
return 20;
gotsock:
if( (osock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1 )
{
fprintf(cfile, "500 socket: %s\n", strerror(errno));
goto quit1;
}
oaddr.sin_family = h->h_addrtype;
oaddr.sin_port = htons(oport);
memcpy(&oaddr.sin_addr, h->h_addr, h->h_length);
if( connect(osock, &oaddr, sizeof(oaddr)) )
{
fprintf(cfile, "500 connect: %s\n", strerror(errno));
goto quit1;
}
while( 1 )
{
FD_ZERO(&fdsr);
FD_ZERO(&fdse);
FD_SET(csock,&fdsr);
FD_SET(csock,&fdse);
FD_SET(osock,&fdsr);
FD_SET(osock,&fdse);
if( select(20, &fdsr, NULL, &fdse, NULL) == -1 )
{
fprintf(cfile, "500 select: %s\n", strerror(errno));
goto quit2;
}
if( FD_ISSET(csock,&fdsr) || FD_ISSET(csock,&fdse) )
{
if ((nbyt = read(csock,buf,4096)) <= 0)
goto quit2;
if ((write(osock,buf,nbyt)) <= 0)
goto quit2;
}
else if( FD_ISSET(osock,&fdsr) || FD_ISSET(osock,&fdse) )
{
if ((nbyt = read(osock,buf,4096)) <= 0)
goto quit2;
if ((write(csock,buf,nbyt)) <= 0)
goto quit2;
}
}
quit2:
shutdown(osock,2);
close(osock);
quit1:
fflush(cfile);
shutdown(csock,2);
quit0:
fclose(cfile);
return 0;
}
I've compiled it on Debian 6 squeeze. It used to work. I've added all the iptables rules but it still does the error.
I've no idea how to fix it now.
To run it it should be:
./proxymr 6900 6900 server hostip PLoginMR
./proxymr 6121 6121 server hostip PCharMR
./proxymr 5121 5121 server hostip PMapMR
and I get:
bind: Cannot assign requested address