nightmaremail

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs

timeoutconn.c (2344B)

      1 #include "timeoutconn.h"
      2 
      3 #include <sys/types.h>
      4 #include <sys/socket.h>
      5 #include <netinet/in.h>
      6 #include <arpa/inet.h>
      7 #include "ndelay.h"
      8 #include "select.h"
      9 #include "error.h"
     10 #include "readwrite.h"
     11 #include "ip.h"
     12 #include "byte.h"
     13 
     14 int timeoutbindconn(int s, struct ip_address *ip, struct ip_address *bip, unsigned int port, int timeout)
     15 {
     16   char ch;
     17   int is6 = AF_INET;
     18   union {
     19     struct sockaddr_in a;
     20     struct sockaddr_in6 aaaa;
     21   } sin;
     22   union {
     23     struct sockaddr_in a;
     24     struct sockaddr_in6 aaaa;
     25   } bsin;
     26   char *x;
     27   fd_set wfds;
     28   struct timeval tv;
     29 
     30   if (bip != NULL) if (bip->is6 != ip->is6) return (errno = EOPNOTSUPP, -1); /* erm... Reinhilde Bjornsdottir */
     31 
     32   if (ip->is6) {
     33     is6 = AF_INET6;
     34     byte_zero(&sin,sizeof(sin));
     35     byte_copy(&sin.aaaa.sin6_addr,16,ip->ip.aaaa.d);
     36     x = (char *) &sin.aaaa.sin6_port;
     37     x[1] = port; port >>= 8; x[0] = port;
     38     if (bip != NULL) {
     39       byte_zero(&bsin,sizeof(bsin));
     40       byte_copy(&bsin.aaaa.sin6_addr,16,bip->ip.aaaa.d);
     41       x = (char *) &bsin.aaaa.sin6_port;
     42       x[1] = 0; x[0] = 0;
     43     }
     44     sin.aaaa.sin6_family = is6;
     45   } else {
     46     byte_zero(&sin,sizeof(sin));
     47     byte_copy(&sin.a.sin_addr,4,ip->ip.a.d);
     48     x = (char *) &sin.a.sin_port;
     49     x[1] = port; port >>= 8; x[0] = port;
     50     if (bip != NULL) {
     51       byte_zero(&bsin,sizeof(bsin));
     52       byte_copy(&bsin.a.sin_addr,4,bip->ip.a.d);
     53       x = (char *) &bsin.a.sin_port;
     54       x[1] = 0; x[0] = 0;
     55     }
     56     sin.a.sin_family = is6;
     57   }
     58 
     59   if (ndelay_on(s) == -1) return -1;
     60 
     61   /* XXX: could bind s */
     62 
     63   if (connect(s,(struct sockaddr *) &sin,ip->is6 ? sizeof(sin.aaaa) : sizeof(sin.a)) == 0) {
     64     ndelay_off(s);
     65     return 0;
     66   }
     67   if ((errno != error_inprogress) && (errno != error_wouldblock)) return -1;
     68 
     69   FD_ZERO(&wfds);
     70   FD_SET(s,&wfds);
     71   tv.tv_sec = timeout; tv.tv_usec = 0;
     72 
     73   if (select(s + 1,NULL,&wfds,NULL,&tv) == -1) return -1;
     74   if (FD_ISSET(s,&wfds)) {
     75     unsigned int dummy;
     76     dummy = sizeof(sin);
     77     if (getpeername(s,(struct sockaddr *) &sin,&dummy) == -1) {
     78       read(s,&ch,1);
     79       return -1;
     80     }
     81     ndelay_off(s);
     82     return 0;
     83   }
     84   errno = error_timeout; /* note that connect attempt is continuing */
     85   return -1;
     86 }
     87 
     88 int timeoutconn(int s, struct ip_address *ip, unsigned int port, int timeout)
     89 {
     90   return timeoutbindconn(s, ip, NULL, port, timeout);
     91 }
     92