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161 lines
5.2 KiB
161 lines
5.2 KiB
//+-------------------------------------------------------------------------
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// Microsoft Windows
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//
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// Copyright (C) Microsoft Corporation, 1996 - 1996
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//
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// File: crypttls.h
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//
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// Contents: Crypt Thread Local Storage (TLS) and Asn1 Module
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// installation and allocation functions
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//
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// APIs:
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// I_CryptAllocTls
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// I_CryptFreeTls
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// I_CryptGetTls
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// I_CryptSetTls
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// I_CryptDetachTls
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//
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// I_CryptInstallAsn1Module
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// I_CryptUninstallAsn1Module
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// I_CryptGetAsn1Encoder
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// I_CryptGetAsn1Decoder
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//
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//
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// History: 17-Nov-96 philh created
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//--------------------------------------------------------------------------
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#ifndef __CRYPTTLS_H__
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#define __CRYPTTLS_H__
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#include "msasn1.h"
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#include <wincrypt.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Handle to an allocated Crypt TLS entry
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typedef DWORD HCRYPTTLS;
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// Handle to an installed Asn1 module
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typedef DWORD HCRYPTASN1MODULE;
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//+-------------------------------------------------------------------------
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// Install a thread local storage entry and return a handle for future access.
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//--------------------------------------------------------------------------
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HCRYPTTLS
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WINAPI
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I_CryptAllocTls();
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//+-------------------------------------------------------------------------
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// Called at DLL_PROCESS_DETACH to free a thread local storage entry.
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// Optionally, calls the callback for each thread having a non-NULL pvTls.
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//--------------------------------------------------------------------------
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BOOL
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WINAPI
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I_CryptFreeTls(
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IN HCRYPTTLS hCryptTls,
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IN OPTIONAL PFN_CRYPT_FREE pfnFree
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);
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//+-------------------------------------------------------------------------
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// Get the thread specific pointer specified by the
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// hCryptTls returned by I_CryptAllocTls().
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//
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// Returns NULL for an error or uninitialized pointer.
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//--------------------------------------------------------------------------
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void *
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WINAPI
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I_CryptGetTls(
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IN HCRYPTTLS hCryptTls
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);
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//+-------------------------------------------------------------------------
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// Set the thread specific pointer specified by the
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// hCryptTls returned by I_CryptAllocTls().
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//
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// Returns FALSE for an invalid handle or unable to allocate memory.
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//--------------------------------------------------------------------------
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BOOL
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WINAPI
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I_CryptSetTls(
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IN HCRYPTTLS hCryptTls,
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IN void *pvTls
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);
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//+-------------------------------------------------------------------------
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// Called at DLL_THREAD_DETACH to free the thread's
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// TLS entry specified by the hCryptTls. Returns the thread specific pointer
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// to be freed by the caller.
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//
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// Note, at DLL_PROCESS_DETACH, I_CryptFreeTls should be called instead.
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//--------------------------------------------------------------------------
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void *
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WINAPI
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I_CryptDetachTls(
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IN HCRYPTTLS hCryptTls
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);
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//+-------------------------------------------------------------------------
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// Install an Asn1 module entry and return a handle for future access.
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//
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// Each thread has its own copy of the decoder and encoder associated
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// with the Asn1 module. Creation is deferred until first referenced by
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// the thread.
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//
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// I_CryptGetAsn1Encoder or I_CryptGetAsn1Decoder must be called with the
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// handle returned by I_CryptInstallAsn1Module to get the thread specific
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// Asn1 encoder or decoder.
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//
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// Currently, dwFlags and pvReserved aren't used and must be set to 0.
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//--------------------------------------------------------------------------
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HCRYPTASN1MODULE
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WINAPI
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I_CryptInstallAsn1Module(
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IN ASN1module_t pMod,
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IN DWORD dwFlags,
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IN void *pvReserved
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);
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//+-------------------------------------------------------------------------
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// Called at DLL_PROCESS_DETACH to uninstall an hAsn1Module entry. Iterates
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// through the threads and frees their created Asn1 encoders and decoders.
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//--------------------------------------------------------------------------
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BOOL
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WINAPI
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I_CryptUninstallAsn1Module(
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IN HCRYPTASN1MODULE hAsn1Module
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);
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//+-------------------------------------------------------------------------
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// Get the thread specific pointer to the Asn1 encoder specified by the
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// hAsn1Module returned by CryptInstallAsn1Module. If the
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// encoder doesn't exist, then, its created using the Asn1 module
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// associated with hAsn1Module.
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//--------------------------------------------------------------------------
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ASN1encoding_t
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WINAPI
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I_CryptGetAsn1Encoder(
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IN HCRYPTASN1MODULE hAsn1Module
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);
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//+-------------------------------------------------------------------------
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// Get the thread specific pointer to the Asn1 decoder specified by the
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// hAsn1Module returned by CryptInstallAsn1Module. If the
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// decoder doesn't exist, then, its created using the Asn1 module
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// associated with hAsn1Module.
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//--------------------------------------------------------------------------
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ASN1decoding_t
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WINAPI
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I_CryptGetAsn1Decoder(
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IN HCRYPTASN1MODULE hAsn1Module
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);
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#ifdef __cplusplus
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} // Balance extern "C" above
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#endif
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#endif
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