win32: mingw32/socket.c

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/win32/socket.c b/win32/socket.c
new file mode 100644
index 000000000..4ebe2ef92
--- /dev/null
+++ b/win32/socket.c
@@ -0,0 +1,57 @@
+#include "libbb.h"
+#include "win32.h"
+#include "strbuf.h"
+#include "git.h"
+
+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(s, O_RDWR|O_BINARY)) < 0) {
+                closesocket(s);
+                return error("unable to make a socket file descriptor: %s",
+                        strerror(errno));
+        }
+        return sockfd;
+}
+#undef connect
+int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz)
+{
+        SOCKET s = (SOCKET)_get_osfhandle(sockfd);
+        return connect(s, sa, sz);
+}
+
+void winsock_init()
+{
+        static int init = 0;
+        if (!init) {
+                WSADATA wsa;
+                if (WSAStartup(MAKEWORD(2,2), &wsa))
+                die("unable to initialize winsock subsystem, error %d",
+                        WSAGetLastError());
+                atexit((void(*)(void)) WSACleanup);
+                init = 1;
+        }
+}
+
+/* this is the first function to call into WS_32; initialize it */
+#undef gethostbyname
+struct hostent *mingw_gethostbyname(const char *host)
+{
+        winsock_init();
+        return gethostbyname(host);
+}