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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nscore.h"
#include "nsStringGlue.h"
#include "MapiMimeTypes.h"
uint8_t CMimeTypes::m_mimeBuffer[kMaxMimeTypeSize];
BOOL CMimeTypes::GetKey(HKEY root, LPCTSTR pName, PHKEY pKey)
{
LONG result = RegOpenKeyEx(root, pName, 0, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, pKey);
return result == ERROR_SUCCESS;
}
BOOL CMimeTypes::GetValueBytes(HKEY rootKey, LPCTSTR pValName, LPBYTE *ppBytes)
{
LONG err;
DWORD bufSz;
*ppBytes = NULL;
// Get the installed directory
err = RegQueryValueEx(rootKey, pValName, NULL, NULL, NULL, &bufSz);
if (err == ERROR_SUCCESS) {
*ppBytes = new BYTE[bufSz];
err = RegQueryValueEx(rootKey, pValName, NULL, NULL, *ppBytes, &bufSz);
if (err == ERROR_SUCCESS) {
return TRUE;
}
delete *ppBytes;
*ppBytes = NULL;
}
return FALSE;
}
void CMimeTypes::ReleaseValueBytes(LPBYTE pBytes)
{
if (pBytes)
delete pBytes;
}
BOOL CMimeTypes::GetMimeTypeFromReg(const nsCString& ext, LPBYTE *ppBytes)
{
HKEY extensionKey;
BOOL result = FALSE;
*ppBytes = NULL;
if (GetKey(HKEY_CLASSES_ROOT, ext.get(), &extensionKey)) {
result = GetValueBytes(extensionKey, "Content Type", ppBytes);
RegCloseKey(extensionKey);
}
return result;
}
uint8_t * CMimeTypes::GetMimeType(const nsString& theExt)
{
nsCString ext;
LossyCopyUTF16toASCII(theExt, ext);
return GetMimeType(ext);
}
uint8_t * CMimeTypes::GetMimeType(const nsCString& theExt)
{
nsCString ext = theExt;
if (ext.Length()) {
if (ext.First() != '.') {
ext = ".";
ext += theExt;
}
}
BOOL result = FALSE;
int len;
if (!ext.Length())
return NULL;
LPBYTE pByte;
if (GetMimeTypeFromReg(ext, &pByte)) {
len = strlen((const char *) pByte);
if (len && (len < kMaxMimeTypeSize)) {
memcpy(m_mimeBuffer, pByte, len);
m_mimeBuffer[len] = 0;
result = TRUE;
}
ReleaseValueBytes(pByte);
}
if (result)
return m_mimeBuffer;
return NULL;
}
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