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