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authorJannis Hoffmann <jannis@fehcom.de>2024-07-09 13:58:20 +0200
committerJannis Hoffmann <jannis@fehcom.de>2024-07-09 13:58:20 +0200
commit249866e3d1e11dc72eaa1305f4bb479ded92ef38 (patch)
tree7118c5f58e29fe61c100e4d067bb90ba8d52589e /src/socket_recv.c
parent96cf8dffe4f7b0b910f790066ae622dc429eb522 (diff)
reorganized file structure
Moved c files into src/. Corrected VERSION file. Removed BUILD and FILES.
Diffstat (limited to 'src/socket_recv.c')
-rw-r--r--src/socket_recv.c39
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..de8c856
--- /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
+ @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;
+}