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-rw-r--r--src/socket_setup.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/src/socket_setup.c b/src/socket_setup.c
new file mode 100644
index 0000000..fb65fa2
--- /dev/null
+++ b/src/socket_setup.c
@@ -0,0 +1,99 @@
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#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));
+}