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454 lines
13 KiB
454 lines
13 KiB
//
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// Mime stuff used by shell32/shdocvw/shdoc401
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//
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#include "priv.h"
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#define TF_MIME 0
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/*----------------------------------------------------------
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Purpose: Generates the HKEY_CLASSES_ROOT subkey for a MIME
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type
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Returns:
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Cond: --
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*/
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STDAPI_(BOOL) GetMIMETypeSubKeyA(LPCSTR pcszMIMEType, LPSTR pszSubKeyBuf, UINT cchBuf)
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{
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BOOL bResult;
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bResult = ((UINT)lstrlenA(TEXT("MIME\\Database\\Content Type\\")) +
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(UINT)lstrlenA(pcszMIMEType) < cchBuf);
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if (bResult)
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{
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StringCchPrintfA(pszSubKeyBuf, cchBuf, TEXT("MIME\\Database\\Content Type\\%s"), pcszMIMEType);
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}
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else
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{
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if (cchBuf > 0)
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*pszSubKeyBuf = '\0';
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TraceMsg(TF_WARNING, "GetMIMETypeSubKey(): Given sub key buffer of length %u is too short to hold sub key for MIME type %hs.",
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cchBuf, pcszMIMEType);
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}
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ASSERT(! cchBuf ||
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(IS_VALID_STRING_PTRA(pszSubKeyBuf, -1) &&
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(UINT)lstrlenA(pszSubKeyBuf) < cchBuf));
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ASSERT(bResult ||
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! cchBuf ||
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! *pszSubKeyBuf);
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return(bResult);
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}
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STDAPI_(BOOL) GetMIMETypeSubKeyW(LPCWSTR pszMIMEType, LPWSTR pszBuf, UINT cchBuf)
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{
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BOOL bRet;
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char szMIMEType[MAX_PATH];
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char sz[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRW(pszMIMEType, -1));
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WideCharToMultiByte(CP_ACP, 0, pszMIMEType, -1, szMIMEType, SIZECHARS(szMIMEType), NULL, NULL);
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bRet = GetMIMETypeSubKeyA(szMIMEType, sz, SIZECHARS(sz));
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if (bRet)
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{
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ASSERT(cchBuf <= SIZECHARS(sz));
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MultiByteToWideChar(CP_ACP, 0, sz, -1, pszBuf, cchBuf);
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}
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return bRet;
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}
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/*
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** RegisterExtensionForMIMEType()
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**
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** Under HKEY_CLASSES_ROOT\MIME\Database\Content Type\mime/type, add
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** Content Type = mime/type and Extension = .ext.
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**
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*/
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STDAPI_(BOOL) RegisterExtensionForMIMETypeA(LPCSTR pcszExtension, LPCSTR pcszMIMEContentType)
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{
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BOOL bResult;
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CHAR szMIMEContentTypeSubKey[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRA(pcszExtension, -1));
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ASSERT(IS_VALID_STRING_PTRA(pcszMIMEContentType, -1));
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ASSERT(IsValidExtensionA(pcszExtension));
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bResult = GetMIMETypeSubKeyA(pcszMIMEContentType, szMIMEContentTypeSubKey,
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SIZECHARS(szMIMEContentTypeSubKey));
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if (bResult)
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{
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/* (+ 1) for null terminator. */
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bResult = (NO_ERROR == SHSetValueA(HKEY_CLASSES_ROOT, szMIMEContentTypeSubKey,
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"Extension", REG_SZ, pcszExtension,
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CbFromCchA(lstrlenA(pcszExtension) + 1)));
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}
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return(bResult);
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}
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STDAPI_(BOOL) RegisterExtensionForMIMETypeW(LPCWSTR pcszExtension, LPCWSTR pcszMIMEContentType)
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{
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BOOL bResult;
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WCHAR szMIMEContentTypeSubKey[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRW(pcszExtension, -1));
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ASSERT(IS_VALID_STRING_PTRW(pcszMIMEContentType, -1));
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ASSERT(IsValidExtensionW(pcszExtension));
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bResult = GetMIMETypeSubKeyW(pcszMIMEContentType, szMIMEContentTypeSubKey,
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SIZECHARS(szMIMEContentTypeSubKey));
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if (bResult)
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{
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/* (+ 1) for null terminator. */
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bResult = (NO_ERROR == SHSetValueW(HKEY_CLASSES_ROOT, szMIMEContentTypeSubKey,
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TEXTW("Extension"), REG_SZ, pcszExtension,
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(lstrlenW(pcszExtension) + 1)*sizeof(WCHAR)));
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}
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return(bResult);
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}
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/*
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** UnregisterExtensionForMIMEType()
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**
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** Deletes Extension under
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** HKEY_CLASSES_ROOT\MIME\Database\Content Type\mime/type. If no other values
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** or sub keys are left, deletes
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** HKEY_CLASSES_ROOT\MIME\Database\Content Type\mime/type.
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**
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** Side Effects: May also delete MIME key.
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*/
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STDAPI_(BOOL) UnregisterExtensionForMIMETypeA(LPCSTR pcszMIMEContentType)
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{
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BOOL bResult;
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CHAR szMIMEContentTypeSubKey[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRA(pcszMIMEContentType, -1));
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bResult = (GetMIMETypeSubKeyA(pcszMIMEContentType, szMIMEContentTypeSubKey,
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SIZECHARS(szMIMEContentTypeSubKey)) &&
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NO_ERROR == SHDeleteValueA(HKEY_CLASSES_ROOT, szMIMEContentTypeSubKey,
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"Extension") &&
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NO_ERROR == SHDeleteEmptyKeyA(HKEY_CLASSES_ROOT, szMIMEContentTypeSubKey));
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return(bResult);
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}
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STDAPI_(BOOL) UnregisterExtensionForMIMETypeW(LPCWSTR pcszMIMEContentType)
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{
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BOOL bResult;
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WCHAR szMIMEContentTypeSubKey[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRW(pcszMIMEContentType, -1));
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bResult = (GetMIMETypeSubKeyW(pcszMIMEContentType, szMIMEContentTypeSubKey,
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SIZECHARS(szMIMEContentTypeSubKey)) &&
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NO_ERROR == SHDeleteValueW(HKEY_CLASSES_ROOT, szMIMEContentTypeSubKey,
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TEXTW("Extension")) &&
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NO_ERROR == SHDeleteEmptyKeyW(HKEY_CLASSES_ROOT, szMIMEContentTypeSubKey));
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return(bResult);
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}
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/*
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** UnregisterMIMETypeForExtension()
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**
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** Deletes Content Type under HKEY_CLASSES_ROOT\.ext.
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**
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** Side Effects: none
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*/
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STDAPI_(BOOL) UnregisterMIMETypeForExtensionA(LPCSTR pcszExtension)
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{
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ASSERT(IS_VALID_STRING_PTRA(pcszExtension, -1));
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ASSERT(IsValidExtensionA(pcszExtension));
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return NO_ERROR == SHDeleteValueA(HKEY_CLASSES_ROOT, pcszExtension, "Content Type");
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}
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STDAPI_(BOOL) UnregisterMIMETypeForExtensionW(LPCWSTR pcszExtension)
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{
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ASSERT(IS_VALID_STRING_PTRW(pcszExtension, -1));
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ASSERT(IsValidExtensionW(pcszExtension));
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return NO_ERROR == SHDeleteValueW(HKEY_CLASSES_ROOT, pcszExtension, TEXTW("Content Type"));
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}
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/*
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** RegisterMIMETypeForExtension()
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**
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** Under HKEY_CLASSES_ROOT\.ext, add Content Type = mime/type.
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**
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** Arguments:
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**
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** Returns:
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**
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** Side Effects: none
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*/
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STDAPI_(BOOL) RegisterMIMETypeForExtensionA(LPCSTR pcszExtension, LPCSTR pcszMIMEContentType)
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{
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ASSERT(IS_VALID_STRING_PTRA(pcszExtension, -1));
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ASSERT(IS_VALID_STRING_PTRA(pcszMIMEContentType, -1));
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ASSERT(IsValidExtensionA(pcszExtension));
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/* (+ 1) for null terminator. */
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return NO_ERROR == SHSetValueA(HKEY_CLASSES_ROOT, pcszExtension, "Content Type",
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REG_SZ, pcszMIMEContentType,
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CbFromCchA(lstrlenA(pcszMIMEContentType) + 1));
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}
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STDAPI_(BOOL) RegisterMIMETypeForExtensionW(LPCWSTR pcszExtension, LPCWSTR pcszMIMEContentType)
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{
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ASSERT(IS_VALID_STRING_PTRW(pcszExtension, -1));
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ASSERT(IS_VALID_STRING_PTRW(pcszMIMEContentType, -1));
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ASSERT(IsValidExtensionW(pcszExtension));
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/* (+ 1) for null terminator. */
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return NO_ERROR == SHSetValueW(HKEY_CLASSES_ROOT, pcszExtension, TEXTW("Content Type"),
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REG_SZ, pcszMIMEContentType,
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(lstrlenW(pcszMIMEContentType) + 1) * sizeof(WCHAR));
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}
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/*
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** GetMIMEValue()
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**
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** Retrieves the data for a value of a MIME type.
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**
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** Arguments:
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**
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** Returns:
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**
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** Side Effects: none
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*/
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STDAPI_(BOOL) GetMIMEValueA(LPCSTR pcszMIMEType, LPCSTR pcszValue,
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PDWORD pdwValueType, PBYTE pbyteValueBuf,
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PDWORD pdwcbValueBufLen)
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{
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BOOL bResult;
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CHAR szMIMETypeSubKey[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRA(pcszMIMEType, -1));
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ASSERT(! pcszValue ||
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IS_VALID_STRING_PTRA(pcszValue, -1));
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ASSERT(IS_VALID_WRITE_PTR(pdwValueType, DWORD));
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ASSERT(IS_VALID_WRITE_BUFFER(pbyteValueBuf, BYTE, *pdwcbValueBufLen));
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bResult = (GetMIMETypeSubKeyA(pcszMIMEType, szMIMETypeSubKey,SIZECHARS(szMIMETypeSubKey)) &&
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NO_ERROR == SHGetValueA(HKEY_CLASSES_ROOT, szMIMETypeSubKey,
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pcszValue, pdwValueType, pbyteValueBuf,
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pdwcbValueBufLen));
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return(bResult);
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}
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STDAPI_(BOOL) GetMIMEValueW(LPCWSTR pcszMIMEType, LPCWSTR pcszValue,
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PDWORD pdwValueType, PBYTE pbyteValueBuf,
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PDWORD pdwcbValueBufLen)
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{
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BOOL bResult;
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WCHAR szMIMETypeSubKey[MAX_PATH];
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ASSERT(IS_VALID_STRING_PTRW(pcszMIMEType, -1));
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ASSERT(! pcszValue ||
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IS_VALID_STRING_PTRW(pcszValue, -1));
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ASSERT(IS_VALID_WRITE_PTR(pdwValueType, DWORD));
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ASSERT(IS_VALID_WRITE_BUFFER(pbyteValueBuf, BYTE, *pdwcbValueBufLen));
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bResult = (GetMIMETypeSubKeyW(pcszMIMEType, szMIMETypeSubKey,SIZECHARS(szMIMETypeSubKey)) &&
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NO_ERROR == SHGetValueW(HKEY_CLASSES_ROOT, szMIMETypeSubKey,
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pcszValue, pdwValueType, pbyteValueBuf,
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pdwcbValueBufLen));
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return(bResult);
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}
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/*
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** GetMIMETypeStringValue()
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**
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** Retrieves the string for a registered MIME type's value.
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**
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** Arguments:
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**
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** Returns:
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**
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** Side Effects: none
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*/
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STDAPI_(BOOL) GetMIMETypeStringValueA(LPCSTR pcszMIMEType, LPCSTR pcszValue,
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LPSTR pszBuf, UINT ucBufLen)
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{
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BOOL bResult;
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DWORD dwValueType;
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DWORD dwcbLen = CbFromCchA(ucBufLen);
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/* GetMIMEValue() will verify parameters. */
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bResult = (GetMIMEValueA(pcszMIMEType, pcszValue, &dwValueType, (PBYTE)pszBuf, &dwcbLen) &&
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dwValueType == REG_SZ);
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if (! bResult)
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{
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if (ucBufLen > 0)
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*pszBuf = '\0';
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}
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ASSERT(! ucBufLen || IS_VALID_STRING_PTRA(pszBuf, -1));
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return(bResult);
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}
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STDAPI_(BOOL) GetMIMETypeStringValueW(LPCWSTR pcszMIMEType, LPCWSTR pcszValue,
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LPWSTR pszBuf, UINT ucBufLen)
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{
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BOOL bResult;
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DWORD dwValueType;
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DWORD dwcbLen = CbFromCchW(ucBufLen);
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/* GetMIMEValue() will verify parameters. */
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bResult = (GetMIMEValueW(pcszMIMEType, pcszValue, &dwValueType, (PBYTE)pszBuf, &dwcbLen) &&
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dwValueType == REG_SZ);
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if (! bResult)
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{
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if (ucBufLen > 0)
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*pszBuf = '\0';
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}
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ASSERT(! ucBufLen || IS_VALID_STRING_PTRW(pszBuf, -1));
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return(bResult);
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}
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/*
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** MIME_GetExtension()
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**
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** Determines the file name extension to be used when writing a file of a MIME
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** type to the file system.
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**
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** Arguments:
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**
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** Returns:
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**
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** Side Effects: none
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*/
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STDAPI_(BOOL) MIME_GetExtensionA(LPCSTR pcszMIMEType, LPSTR pszExtensionBuf, UINT ucExtensionBufLen)
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{
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BOOL bResult = FALSE;
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ASSERT(IS_VALID_STRING_PTRA(pcszMIMEType, -1));
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ASSERT(IS_VALID_WRITE_BUFFER(pszExtensionBuf, CHAR, ucExtensionBufLen));
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if (EVAL(ucExtensionBufLen > 2))
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{
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/* Leave room for possible leading period. */
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if (GetMIMETypeStringValueA(pcszMIMEType, "Extension", pszExtensionBuf + 1, ucExtensionBufLen - 1))
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{
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if (pszExtensionBuf[1])
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{
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/* Prepend period if necessary. */
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if (pszExtensionBuf[1] == TEXT('.'))
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/* (+ 1) for null terminator. */
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MoveMemory(pszExtensionBuf, pszExtensionBuf + 1,
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CbFromCchA(lstrlenA(pszExtensionBuf + 1) + 1));
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else
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pszExtensionBuf[0] = TEXT('.');
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bResult = TRUE;
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}
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}
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}
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if (! bResult)
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{
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if (ucExtensionBufLen > 0)
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*pszExtensionBuf = '\0';
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}
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if (bResult)
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TraceMsgA(TF_MIME, "MIME_GetExtension(): Extension %s registered as default extension for MIME type %s.",
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pszExtensionBuf, pcszMIMEType);
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ASSERT((bResult &&
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IsValidExtensionA(pszExtensionBuf)) ||
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(! bResult &&
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(! ucExtensionBufLen ||
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! *pszExtensionBuf)));
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ASSERT(! ucExtensionBufLen ||
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(UINT)lstrlenA(pszExtensionBuf) < ucExtensionBufLen);
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return(bResult);
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}
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STDAPI_(BOOL) MIME_GetExtensionW(LPCWSTR pcszMIMEType, LPWSTR pszExtensionBuf, UINT ucExtensionBufLen)
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{
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BOOL bResult = FALSE;
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ASSERT(IS_VALID_STRING_PTRW(pcszMIMEType, -1));
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ASSERT(IS_VALID_WRITE_BUFFER(pszExtensionBuf, CHAR, ucExtensionBufLen));
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if (EVAL(ucExtensionBufLen > 2))
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{
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/* Leave room for possible leading period. */
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if (GetMIMETypeStringValueW(pcszMIMEType, TEXTW("Extension"), pszExtensionBuf + 1, ucExtensionBufLen - 1))
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{
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if (pszExtensionBuf[1])
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{
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/* Prepend period if necessary. */
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if (pszExtensionBuf[1] == TEXT('.'))
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/* (+ 1) for null terminator. */
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MoveMemory(pszExtensionBuf, pszExtensionBuf + 1,
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CbFromCchW(lstrlenW(pszExtensionBuf + 1) + 1));
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else
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pszExtensionBuf[0] = TEXT('.');
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bResult = TRUE;
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}
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}
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}
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if (! bResult)
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{
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if (ucExtensionBufLen > 0)
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*pszExtensionBuf = '\0';
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}
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if (bResult)
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TraceMsgW(TF_MIME, "MIME_GetExtension(): Extension %s registered as default extension for MIME type %s.",
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pszExtensionBuf, pcszMIMEType);
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ASSERT((bResult &&
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IsValidExtensionW(pszExtensionBuf)) ||
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(! bResult &&
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(! ucExtensionBufLen ||
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! *pszExtensionBuf)));
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ASSERT(! ucExtensionBufLen ||
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(UINT)lstrlenW(pszExtensionBuf) < ucExtensionBufLen);
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return(bResult);
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}
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