Sockets wrapper

2 files changed, 125 insertions, 1 deletions

diff --git a/source/kit/sockets.h b/source/kit/sockets.h
new file mode 100644
index 0000000..8afcee6
--- /dev/null
+++ b/source/kit/sockets.h
@@ -0,0 +1,122 @@
+#ifndef KIT_SOCKETS_H
+#define KIT_SOCKETS_H
+
+#include "status.h"
+
+#ifndef KIT_DISABLE_SYSTEM_SOCKETS
+#  ifdef __GNUC__
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wunused-function"
+#    pragma GCC diagnostic ignored "-Wunknown-pragmas"
+#  endif
+
+#  if defined(_WIN32) && !defined(__CYGWIN__)
+
+#    define WIN32_LEAN_AND_MEAN
+#    include <winsock2.h>
+#    include <ws2tcpip.h>
+
+#    define socket_t SOCKET
+#    define socklen_t int
+
+//#    define EINPROGRESS WSAEINPROGRESS
+//#    define EWOULDBLOCK WSAEWOULDBLOCK
+//#    define EMSGSIZE WSAEMSGSIZE
+//#    define EISCONN WSAEISCONN
+//#    define ECONNRESET WSAECONNRESET
+//#    define EADDRINUSE WSAEADDRINUSE
+
+//#    define errno ((int) WSAGetLastError())
+
+#    ifdef __cplusplus
+extern "C" {
+#    endif
+
+static kit_status_t kit_sockets_init(void) {
+  WSADATA data;
+  memset(&data, 0, sizeof data);
+  WORD version = MAKEWORD(2, 2);
+  return WSAStartup(version, &data) == ERROR_SUCCESS
+             ? KIT_OK
+             : KIT_ERROR_SOCKETS_STARTUP_FAILED;
+}
+
+static kit_status_t kit_sockets_cleanup(void) {
+  WSACleanup();
+  return KIT_OK;
+}
+
+static int kit_socket_set_blocking(socket_t s) {
+  u_long flag = 0;
+  return ioctlsocket(s, FIONBIO, &flag) == 0
+             ? KIT_OK
+             : KIT_ERROR_SOCKET_CONTROL_FAILED;
+}
+
+static int kit_socket_set_nonblocking(socket_t s) {
+  u_long flag = 1;
+  return ioctlsocket(s, FIONBIO, &flag) == 0
+             ? KIT_OK
+             : KIT_ERROR_SOCKET_CONTROL_FAILED;
+}
+
+#    ifdef __cplusplus
+}
+#    endif
+
+#  else
+
+#    include <arpa/inet.h>
+#    include <errno.h>
+#    include <fcntl.h>
+#    include <netinet/in.h>
+#    include <signal.h>
+#    include <sys/ioctl.h>
+#    include <sys/select.h>
+#    include <sys/socket.h>
+#    include <sys/types.h>
+#    include <unistd.h>
+
+#    define socket_t int
+#    define closesocket close
+#    define INVALID_SOCKET -1
+
+#    ifdef __cplusplus
+extern "C" {
+#    endif
+
+static kit_status_t kit_sockets_init(void) {
+  signal(SIGPIPE, SIG_IGN);
+  return KIT_OK;
+}
+
+static kit_status_t kit_sockets_cleanup(void) {
+  return KIT_OK;
+}
+
+static int kit_socket_set_blocking(socket_t s) {
+  int const flags = fcntl(s, F_GETFL, 0);
+  return fcntl(s, F_SETFL, flags & ~O_NONBLOCK) == 0
+             ? KIT_OK
+             : KIT_ERROR_SOCKET_CONTROL_FAILED;
+}
+
+static int kit_socket_set_nonblocking(socket_t s) {
+  int const flags = fcntl(s, F_GETFL, 0);
+  return fcntl(s, F_SETFL, flags | O_NONBLOCK) == 0
+             ? KIT_OK
+             : KIT_ERROR_SOCKET_CONTROL_FAILED;
+}
+
+#    ifdef __cplusplus
+}
+#    endif
+
+#  endif
+
+#  ifdef __GNUC__
+#    pragma GCC diagnostic pop
+#  endif
+#endif
+
+#endif
diff --git a/source/kit/status.h b/source/kit/status.h
index 3b27a91..0e23151 100644
--- a/source/kit/status.h
+++ b/source/kit/status.h
@@ -13,7 +13,9 @@ enum {
   KIT_ERROR_UNLINK_FAILED,
   KIT_ERROR_FILE_ALREADY_EXISTS,
   KIT_ERROR_FILE_DO_NOT_EXIST,
-  KIT_ERROR_PATH_TOO_LONG
+  KIT_ERROR_PATH_TOO_LONG,
+  KIT_ERROR_SOCKETS_STARTUP_FAILED,
+  KIT_ERROR_SOCKET_CONTROL_FAILED
 };
 
 typedef int kit_status_t;