From 249866e3d1e11dc72eaa1305f4bb479ded92ef38 Mon Sep 17 00:00:00 2001
From: Jannis Hoffmann <jannis@fehcom.de>
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_connect.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/socket_connect.c

(limited to 'src/socket_connect.c')

diff --git a/src/socket_connect.c b/src/socket_connect.c
new file mode 100644
index 0000000..7b20659
--- /dev/null
+++ b/src/socket_connect.c
@@ -0,0 +1,66 @@
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include "byte.h"
+#include "socket_if.h"
+#include "ip.h"
+
+/**
+	@file socket_connect.c
+	@author djb, fefe, feh, kp
+	@source qmail, ucscpi-tcp6
+	@brief connection to remote IP host
+*/
+
+int socket_connect6(int s,const char ip[16],uint16 port,uint32 scope_id)
+{
+  struct sockaddr_in6 sa;
+
+  byte_zero(&sa,sizeof(sa));
+  sa.sin6_family = AF_INET6;
+  uint16_pack_big((char *)&sa.sin6_port,port);
+  sa.sin6_flowinfo = 0;
+  sa.sin6_scope_id = scope_id;
+  byte_copy((char *)&sa.sin6_addr,16,ip);
+
+  return connect(s,(struct sockaddr *)&sa,sizeof(sa));
+}
+
+/* this explizit declaration is needed to prevent compiler warnings */
+int read(int _str, void *_buf, int _b);
+
+int socket_connect4(int s,const char ip[4],uint16 port)
+{
+  struct sockaddr_in sa;
+
+  byte_zero(&sa,sizeof(sa));
+  sa.sin_family = AF_INET;
+  uint16_pack_big((char *)&sa.sin_port,port);
+  byte_copy((char *)&sa.sin_addr,4,ip);
+
+  return connect(s,(struct sockaddr *)&sa,sizeof(sa));
+}
+
+int socket_connect(int s,const char ip[16],uint16 port,uint32 scope_id)
+{
+  if (ip6_isv4mapped(ip))
+    return socket_connect4(s,ip + 12,port);
+
+  return socket_connect6(s,ip,port,scope_id);
+}
+
+int socket_connected(int s)
+{
+  struct sockaddr_in6 sa;
+  int dummy;
+  char ch;
+
+  dummy = sizeof(sa);
+  if (getpeername(s,(struct sockaddr *)&sa,(socklen_t *)&dummy) == -1) {
+    read(s,&ch,1); /* sets errno */
+    return 0;
+  }
+  return 1;
+}
-- 
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