From 249866e3d1e11dc72eaa1305f4bb479ded92ef38 Mon Sep 17 00:00:00 2001 From: Jannis Hoffmann Date: Tue, 9 Jul 2024 13:58:20 +0200 Subject: reorganized file structure Moved c files into src/. Corrected VERSION file. Removed BUILD and FILES. --- src/socket_recv.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/socket_recv.c (limited to 'src/socket_recv.c') diff --git a/src/socket_recv.c b/src/socket_recv.c new file mode 100644 index 0000000..de8c856 --- /dev/null +++ b/src/socket_recv.c @@ -0,0 +1,39 @@ +#include +#include +#include +#include +#include "byte.h" +#include "ip.h" +#include "socket_if.h" + +/** + @file socket_recv.c + @author djb, fefe + @source 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; +} -- cgit v1.2.3