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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsString.h"
#include "MapiMimeTypes.h"
uint8_t CMimeTypes::m_mimeBuffer[kMaxMimeTypeSize];
BOOL CMimeTypes::GetKey(HKEY root, LPCWSTR pName, PHKEY pKey) {
LONG result = RegOpenKeyExW(root, pName, 0,
KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, pKey);
return result == ERROR_SUCCESS;
}
BOOL CMimeTypes::GetValueBytes(HKEY rootKey, LPCWSTR pValName,
LPBYTE* ppBytes) {
LONG err;
DWORD bufSz;
*ppBytes = NULL;
// Get the installed directory
err = RegQueryValueExW(rootKey, pValName, NULL, NULL, NULL, &bufSz);
if (err == ERROR_SUCCESS) {
*ppBytes = new BYTE[bufSz];
err = RegQueryValueExW(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 nsString& ext, LPBYTE* ppBytes) {
HKEY extensionKey;
BOOL result = FALSE;
*ppBytes = NULL;
if (GetKey(HKEY_CLASSES_ROOT, ext.get(), &extensionKey)) {
result = GetValueBytes(extensionKey, L"Content Type", ppBytes);
RegCloseKey(extensionKey);
}
return result;
}
uint8_t* CMimeTypes::GetMimeType(const nsString& theExt) {
nsString ext = theExt;
if (ext.Length()) {
if (ext.First() != '.') {
ext = L".";
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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