1 files changed, 39 insertions, 0 deletions
diff --git a/src/socket_recv.c b/src/socket_recv.c
new file mode 100644
index 0000000..7e0d8f9
--- /dev/null
+++ b/src/socket_recv.c
@@ -0,0 +1,39 @@
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include "byte.h"
+#include "ip.h"
+#include "socket_if.h"
+
+/**
+  * @file socket_recv.c
+  * @authors djb, fefe
+  * @ref ucspi-tcp6
+  * @brief setup receiving socket
+  */
+
+int socket_recv(int s,char *buf,unsigned int len,char ip[16],uint16 *port,uint32 *scope_id)
+{
+  struct sockaddr_in6 sa;
+  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;
+
+  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 r;
+}