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#include #include #include #include #include "byte.h" #include "socket_if.h" #include "ip.h" /** @file socket_setup.c @author djb, feh @source ucspi-tcp6 @brief setup listening socket */ int socket_accept(int s,char ip[16],uint16 *port,uint32 *scope_id) { struct sockaddr_in6 sa; unsigned int dummy = sizeof(sa); int fd; fd = accept(s,(struct sockaddr *)&sa,&dummy); if (fd == -1) return -1; if (sa.sin6_family == AF_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); if (scope_id) *scope_id = 0; } else { 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; } return fd; } int socket_accept4(int s,char ip[4],uint16 *port) { struct sockaddr_in sa; unsigned int dummy = sizeof(sa); int fd; fd = accept(s,(struct sockaddr *) &sa,&dummy); if (fd == -1) return -1; byte_copy(ip,4,(char *) &sa.sin_addr); uint16_unpack_big((char *) &sa.sin_port,port); return fd; } int socket_listen(int s,int backlog) { return listen(s,backlog); } int socket_ipoptionskill(int s) { int r; r = setsockopt(s,IPPROTO_IP,1,(char *) 0,0); /* 1 == IP_OPTIONS */ r = setsockopt(s,IPPROTO_IPV6,1,(char *) 0,0); return r; } int socket_ip6anycast(int s) { int opt = 1; int r; #ifdef GEN_IP_PKTINFO /* Linux */ r = setsockopt(s,IPPROTO_IP,GEN_IP_PKTINFO,&opt,sizeof(opt)); #elif IP_PKTINFO /* Solaris */ r = setsockopt(s,IPPROTO_IP,IP_PKTINFO,&opt,sizeof(opt)); #elif IP_RECVDSTADDR /* BSD */ r = setsockopt(s,IPPROTO_IP,IP_RECVDSTADDR,&opt,sizeof(opt)); #elif IPV6_RECVDSTADDR r = setsockopt(s,IPPROTO_IPV6,IP_RECVDSTADDR,&opt,sizeof(opt)); #endif return r; } int socket_dualstack(int s) { int opt = 0; return setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,&opt,sizeof(opt)); } int socket_nodualstack(int s) { int opt = 1; return setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,&opt,sizeof(opt)); }