diff options
Diffstat (limited to 'socket_recv6.c')
-rw-r--r-- | socket_recv6.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/socket_recv6.c b/socket_recv6.c new file mode 100644 index 0000000..dfbd781 --- /dev/null +++ b/socket_recv6.c @@ -0,0 +1,42 @@ +#include <sys/param.h> +#include "sockaddr_in6.h" +#include "byte.h" +#include "socket.h" +#include "ip6.h" +#include "haveip6.h" +#include "error.h" + +int socket_recv6(int s,char *buf,unsigned int len,char ip[16],uint16 *port,uint32 *scope_id) +{ +#ifdef LIBC_HAS_IP6 + struct sockaddr_in6 sa; +#else + struct sockaddr_in sa; +#endif + unsigned int dummy = sizeof sa; + int r; + + byte_zero(&sa,dummy); + r = recvfrom(s,buf,len,0,(struct sockaddr *) &sa,&dummy); + if (r == -1) return -1; + +#ifdef LIBC_HAS_IP6 + if (noipv6 || sa.sin6_family==AF_INET || sa.sin6_family==PF_INET) { + struct sockaddr_in *sa4=(struct sockaddr_in *)&sa; + byte_copy(ip,12,V4mappedprefix); + byte_copy(ip+12,4,(char *) &sa4->sin_addr); + uint16_unpack_big((char *) &sa4->sin_port,port); + return r; + } + byte_copy(ip,16,(char *) &sa.sin6_addr); + uint16_unpack_big((char *) &sa.sin6_port,port); + if (scope_id) *scope_id=sa.sin6_scope_id; +#else + byte_copy(ip,12,(char *)V4mappedprefix); + byte_copy(ip+12,4,(char *) &sa.sin_addr); + uint16_unpack_big((char *) &sa.sin_port,port); + if (scope_id) *scope_id=0; +#endif + + return r; +} |