1 files changed, 101 insertions, 0 deletions

diff --git a/win32/net.c b/win32/net.c
new file mode 100644
index 000000000..2341119b0
--- /dev/null
+++ b/win32/net.c
@@ -0,0 +1,101 @@
+#include "libbb.h"
+
+int inet_aton(const char *cp, struct in_addr *inp)
+{
+        unsigned long val = inet_addr(cp);
+
+        if (val == INADDR_NONE)
+                return 0;
+        inp->S_un.S_addr = val;
+        return 1;
+}
+
+void init_winsock(void)
+{
+        WSADATA wsa;
+        if (WSAStartup(MAKEWORD(2,2), &wsa))
+                bb_error_msg_and_die("unable to initialize winsock subsystem, error %d",
+                                     WSAGetLastError());
+        atexit((void(*)(void)) WSACleanup); /* may conflict with other atexit? */
+}
+
+int mingw_socket(int domain, int type, int protocol)
+{
+        int sockfd;
+        SOCKET s = WSASocket(domain, type, protocol, NULL, 0, 0);
+        if (s == INVALID_SOCKET) {
+                /*
+                 * WSAGetLastError() values are regular BSD error codes
+                 * biased by WSABASEERR.
+                 * However, strerror() does not know about networking
+                 * specific errors, which are values beginning at 38 or so.
+                 * Therefore, we choose to leave the biased error code
+                 * in errno so that _if_ someone looks up the code somewhere,
+                 * then it is at least the number that are usually listed.
+                 */
+                errno = WSAGetLastError();
+                return -1;
+        }
+        /* convert into a file descriptor */
+        if ((sockfd = _open_osfhandle((intptr_t)s, O_RDWR|O_BINARY)) < 0) {
+                closesocket(s);
+                bb_error_msg("unable to make a socket file descriptor: %s",
+                             strerror(errno));
+                return -1;
+        }
+        return sockfd;
+}
+
+#undef connect
+int mingw_connect(int sockfd, const struct sockaddr *sa, size_t sz)
+{
+        SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+        return connect(s, sa, sz);
+}
+
+#undef bind
+int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz)
+{
+        SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+        return bind(s, sa, sz);
+}
+
+#undef setsockopt
+int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen)
+{
+        SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+        return setsockopt(s, lvl, optname, (const char*)optval, optlen);
+}
+
+#undef shutdown
+int mingw_shutdown(int sockfd, int how)
+{
+        SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+        return shutdown(s, how);
+}
+
+#undef listen
+int mingw_listen(int sockfd, int backlog)
+{
+        SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+        return listen(s, backlog);
+}
+
+#undef accept
+int mingw_accept(int sockfd1, struct sockaddr *sa, socklen_t *sz)
+{
+        int sockfd2;
+
+        SOCKET s1 = (SOCKET)_get_osfhandle(sockfd1);
+        SOCKET s2 = accept(s1, sa, sz);
+
+        /* convert into a file descriptor */
+        if ((sockfd2 = _open_osfhandle((intptr_t)s2, O_RDWR|O_BINARY)) < 0) {
+                int err = errno;
+                closesocket(s2);
+                bb_error_msg("unable to make a socket file descriptor: %s",
+                        strerror(err));
+                return -1;
+        }
+        return sockfd2;
+}