skalibs

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socket_recv6.c (836B)

      1 /* ISC license. */
      2 
      3 #include <skalibs/nonposix.h>
      4 
      5 #include <sys/socket.h>
      6 #include <netinet/in.h>
      7 #include <errno.h>
      8 #include <string.h>
      9 
     10 #include <skalibs/uint16.h>
     11 #include <skalibs/ip46.h>
     12 #include <skalibs/socket.h>
     13 
     14 #ifdef SKALIBS_IPV6_ENABLED
     15 
     16 ssize_t socket_recv6 (int s, char *buf, size_t len, char *ip6, uint16_t *port)
     17 {
     18   struct sockaddr_in6 sa ;
     19   socklen_t dummy = sizeof sa ;
     20   ssize_t r ;
     21   do r = recvfrom(s, buf, len, 0, (struct sockaddr *)&sa, &dummy) ;
     22   while ((r == -1) && (errno == EINTR)) ;
     23   if (r == -1) return -1 ;
     24   memcpy(ip6, sa.sin6_addr.s6_addr, 16) ;
     25   *port = uint16_big(sa.sin6_port) ;
     26   return r ;
     27 }
     28 
     29 #else
     30 
     31 ssize_t socket_recv6 (int s, char *buf, size_t len, char *ip6, uint16_t *port)
     32 {
     33   (void)s ;
     34   (void)buf ;
     35   (void)len ;
     36   (void)ip6 ;
     37   (void)port ;
     38   return (errno = ENOSYS, -1) ;
     39 }
     40 
     41 #endif