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/*
* Public domain
*
* Dongsheng Song <dongsheng.song@gmail.com>
* Brent Cook <bcook@openbsd.org>
*/
#include <ws2tcpip.h>
#include <openssl/bio.h>
#include <openssl/err.h>
int
BIO_sock_init(void)
{
/*
* WSAStartup loads the winsock .dll and initializes the networking
* stack on Windows, or simply increases the reference count.
*/
static struct WSAData wsa_state = {0};
WORD version_requested = MAKEWORD(2, 2);
static int wsa_init_done = 0;
if (!wsa_init_done) {
if (WSAStartup(version_requested, &wsa_state) != 0) {
int err = WSAGetLastError();
SYSerror(err);
BIOerror(BIO_R_WSASTARTUP);
return (-1);
}
wsa_init_done = 1;
}
return (1);
}
void
BIO_sock_cleanup(void)
{
/*
* We could call WSACleanup here, but it is easy to get it wrong. Since
* this API provides no way to even tell if it failed, there is no safe
* way to expose that functionality here.
*
* The cost of leaving the networking DLLs loaded may have been large
* during the Windows 3.1/win32s era, but it is small in modern
* contexts, so don't bother.
*/
}
int
BIO_socket_nbio(int s, int mode)
{
u_long value = mode;
return ioctlsocket(s, FIONBIO, &value) != SOCKET_ERROR;
}
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