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/* posix */
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
/* bsd extensions */
#include <sys/uio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include "priv.h"
int
connect(int fd, void *a, int alen)
{
Rock *r;
int n, cfd, nfd;
char msg[8+256+1], file[8+256+1];
struct sockaddr_in *lip, *rip;
struct sockaddr_un *runix;
static int vers;
r = _sock_findrock(fd, 0);
if(r == 0){
errno = ENOTSOCK;
return -1;
}
if(alen > sizeof(r->raddr)){
errno = ENAMETOOLONG;
return -1;
}
memmove(&r->raddr, a, alen);
switch(r->domain){
case PF_INET:
/* set up a tcp or udp connection */
cfd = open(r->ctl, O_RDWR);
if(cfd < 0){
_syserrno();
return -1;
}
rip = a;
lip = (struct sockaddr_in*)&r->addr;
if(lip->sin_port)
snprintf(msg, sizeof msg, "connect %s!%d%s %d",
inet_ntoa(rip->sin_addr), ntohs(rip->sin_port),
r->reserved ? "!r" : "",
ntohs(lip->sin_port));
else
snprintf(msg, sizeof msg, "connect %s!%d%s",
inet_ntoa(rip->sin_addr), ntohs(rip->sin_port),
r->reserved ? "!r" : "");
n = write(cfd, msg, strlen(msg));
if(n < 0){
_syserrno();
close(cfd);
return -1;
}
close(cfd);
return 0;
case PF_UNIX:
/* null terminate the address */
if(alen == sizeof(r->raddr))
alen--;
*(((char*)&r->raddr)+alen) = 0;
if(r->other < 0){
errno = EGREG;
return -1;
}
/* put far end of our pipe in /srv */
snprintf(msg, sizeof msg, "UD.%d.%d", getpid(), vers++);
if(_sock_srv(msg, r->other) < 0){
r->other = -1;
return -1;
}
r->other = -1;
/* tell server the /srv file to open */
runix = (struct sockaddr_un*)&r->raddr;
_sock_srvname(file, runix->sun_path);
nfd = open(file, O_RDWR);
if(nfd < 0){
_syserrno();
unlink(msg);
return -1;
}
if(write(nfd, msg, strlen(msg)) < 0){
_syserrno();
close(nfd);
unlink(msg);
return -1;
}
close(nfd);
/* wait for server to open it and then remove it */
read(fd, file, sizeof(file));
_sock_srvname(file, msg);
unlink(file);
return 0;
default:
errno = EAFNOSUPPORT;
return -1;
}
}
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