596 lines
14 KiB
C++
596 lines
14 KiB
C++
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/*
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* extricon.cpp - IExtractIcon implementation for URL class.
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*/
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/* Headers
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**********/
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#include "project.hpp"
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#pragma hdrstop
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#include "assoc.h"
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/* Global Constants
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*******************/
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#pragma data_seg(DATA_SEG_READ_ONLY)
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extern const char g_cszURLDefaultIconKey[] = "InternetShortcut\\DefaultIcon";
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extern const HKEY g_hkeyURLSettings = HKEY_LOCAL_MACHINE;
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#pragma data_seg()
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/* Module Constants
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*******************/
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#pragma data_seg(DATA_SEG_READ_ONLY)
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PRIVATE_DATA const char s_cszDefaultIconSubKey[] = "DefaultIcon";
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PRIVATE_DATA const char s_cszGenericURLIconFile[] = "url.dll";
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PRIVATE_DATA const int s_ciGenericURLIcon = 0;
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// IExtractIcon::GetIconLocation() flag combinations
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PRIVATE_DATA const int ALL_GIL_IN_FLAGS = (GIL_OPENICON |
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GIL_FORSHELL);
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PRIVATE_DATA const int ALL_GIL_OUT_FLAGS = (GIL_SIMULATEDOC |
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GIL_PERINSTANCE |
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GIL_PERCLASS |
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GIL_NOTFILENAME |
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GIL_DONTCACHE);
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#pragma data_seg()
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/***************************** Private Functions *****************************/
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/*
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** ParseIconEntry()
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**
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**
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**
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** Arguments:
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**
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** Returns: S_OK if icon entry parsed successfully.
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** E_FAIL if not.
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**
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** Side Effects: The contents of pszIconEntry are destroyed.
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**
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** pszIconEntry and pszIconFile may be the same.
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*/
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PRIVATE_CODE HRESULT ParseIconEntry(PSTR pszIconEntry, PSTR pszIconFile,
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UINT ucbIconFileBufLen, PINT pniIcon)
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{
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HRESULT hr;
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PSTR pszComma;
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ASSERT(IS_VALID_STRING_PTR(pszIconEntry, STR));
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ASSERT(IS_VALID_WRITE_BUFFER_PTR(pszIconFile, STR, ucbIconFileBufLen));
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ASSERT(IS_VALID_WRITE_PTR(pniIcon, INT));
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pszComma = StrChr(pszIconEntry, ',');
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if (pszComma)
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{
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*pszComma++ = '\0';
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TrimWhiteSpace(pszComma);
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*pniIcon = StringToInt(pszComma);
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}
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else
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{
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*pniIcon = 0;
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WARNING_OUT(("ParseIconEntry(): No icon index in entry %s. Using icon index 0.",
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pszIconEntry));
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}
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TrimWhiteSpace(pszIconEntry);
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if ((UINT)lstrlen(pszIconEntry) < ucbIconFileBufLen)
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{
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lstrcpy(pszIconFile, pszIconEntry);
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hr = S_OK;
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TRACE_OUT(("ParseIconEntry(): Parsed icon file %s, index %d.",
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pszIconFile,
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*pniIcon));
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}
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else
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{
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hr = S_FALSE;
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// (+ 1) for null terminator.
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WARNING_OUT(("ParseIconEntry(): Icon file buffer too small for icon file %s (%u bytes supplied, %lu bytes required).",
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pszIconEntry,
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ucbIconFileBufLen,
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lstrlen(pszIconEntry) + 1));
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}
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ASSERT(IsValidIconIndex(hr, pszIconFile, ucbIconFileBufLen, *pniIcon));
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return(hr);
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}
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/*
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** GetURLIcon()
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**
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**
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**
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** Arguments:
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**
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** Returns: S_OK if icon information retrieved successfully.
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** S_FALSE if no icon entry for this URL.
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** Otherwise error.
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**
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** Side Effects: none
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*/
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PRIVATE_CODE HRESULT GetURLIcon(HKEY hkey, PCSTR pcszKey, PSTR pszIconFile,
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UINT ucbIconFileBufLen, PINT pniIcon)
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{
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HRESULT hr;
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DWORD dwcbLen = ucbIconFileBufLen;
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ASSERT(IS_VALID_HANDLE(hkey, KEY));
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ASSERT(IS_VALID_STRING_PTR(pcszKey, CSTR));
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ASSERT(IS_VALID_WRITE_BUFFER_PTR(pszIconFile, STR, ucbIconFileBufLen));
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ASSERT(IS_VALID_WRITE_PTR(pniIcon, INT));
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if (GetDefaultRegKeyValue(hkey, pcszKey, pszIconFile, &dwcbLen)
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== ERROR_SUCCESS)
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hr = ParseIconEntry(pszIconFile, pszIconFile, ucbIconFileBufLen,
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pniIcon);
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else
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{
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// No protocol handler.
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hr = S_FALSE;
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TRACE_OUT(("GetURLIcon(): Couldn't get default value for key %s.",
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pcszKey));
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}
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ASSERT(IsValidIconIndex(hr, pszIconFile, ucbIconFileBufLen, *pniIcon));
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return(hr);
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}
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/*
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** GetFallBackGenericURLIcon()
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**
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**
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**
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** Arguments:
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**
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** Returns: S_OK if fallback generic icon information retrieved
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** successfully.
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** E_FAIL if not.
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**
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** Side Effects: none
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*/
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PRIVATE_CODE HRESULT GetFallBackGenericURLIcon(PSTR pszIconFile,
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UINT ucbIconFileBufLen,
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PINT pniIcon)
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{
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HRESULT hr;
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ASSERT(IS_VALID_WRITE_BUFFER_PTR(pszIconFile, STR, ucbIconFileBufLen));
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ASSERT(IS_VALID_WRITE_PTR(pniIcon, INT));
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// Fall back to first icon in this module.
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if (ucbIconFileBufLen >= sizeof(s_cszGenericURLIconFile))
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{
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lstrcpy(pszIconFile, s_cszGenericURLIconFile);
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*pniIcon = s_ciGenericURLIcon;
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hr = S_OK;
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TRACE_OUT(("GetFallBackGenericURLIcon(): Using generic URL icon file %s, index %d.",
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s_cszGenericURLIconFile,
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s_ciGenericURLIcon));
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}
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else
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{
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hr = E_FAIL;
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WARNING_OUT(("GetFallBackGenericURLIcon(): Icon file buffer too small for generic icon file %s (%u bytes supplied, %lu bytes required).",
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s_cszGenericURLIconFile,
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ucbIconFileBufLen,
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sizeof(s_cszGenericURLIconFile)));
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}
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ASSERT(IsValidIconIndex(hr, pszIconFile, ucbIconFileBufLen, *pniIcon));
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return(hr);
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}
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/*
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** GetGenericURLIcon()
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**
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**
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**
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** Arguments:
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**
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** Returns: S_OK if generic icon information retrieved successfully.
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** Otherwise error.
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**
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** Side Effects: none
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*/
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PRIVATE_CODE HRESULT GetGenericURLIcon(PSTR pszIconFile,
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UINT ucbIconFileBufLen, PINT pniIcon)
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{
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HRESULT hr;
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ASSERT(IS_VALID_WRITE_BUFFER_PTR(pszIconFile, STR, ucbIconFileBufLen));
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ASSERT(IS_VALID_WRITE_PTR(pniIcon, INT));
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hr = GetURLIcon(g_hkeyURLProtocols, g_cszURLDefaultIconKey, pszIconFile,
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ucbIconFileBufLen, pniIcon);
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if (hr == S_FALSE)
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hr = GetFallBackGenericURLIcon(pszIconFile, ucbIconFileBufLen, pniIcon);
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ASSERT(IsValidIconIndex(hr, pszIconFile, ucbIconFileBufLen, *pniIcon));
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return(hr);
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}
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/****************************** Public Functions *****************************/
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/*
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** StringToInt()
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**
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**
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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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** Stops at first non-digit character encountered.
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*/
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PUBLIC_CODE int StringToInt(PCSTR pcsz)
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{
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int nResult = 0;
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BOOL bNegative;
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#ifdef DEBUG
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PCSTR pcszStart = pcsz;
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#endif
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ASSERT(IS_VALID_STRING_PTR(pcsz, CSTR));
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if (*pcsz == '-')
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{
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bNegative = TRUE;
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pcsz++;
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}
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else
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bNegative = FALSE;
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while (IsDigit(*pcsz))
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{
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ASSERT(nResult <= INT_MAX / 10);
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nResult *= 10;
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ASSERT(nResult <= INT_MAX - (*pcsz - '0'));
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nResult += *pcsz++ - '0';
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}
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if (*pcsz) {
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WARNING_OUT(("StringToInt(): Stopped at non-digit character %c in string %s.",
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*pcsz,
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pcszStart));
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}
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// nResult may be any value.
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return(bNegative ? - nResult : nResult);
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}
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PUBLIC_CODE BOOL IsWhiteSpace(char ch)
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{
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return((ch && StrChr(g_cszWhiteSpace, ch)) ? TRUE : FALSE);
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}
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PUBLIC_CODE BOOL AnyMeat(PCSTR pcsz)
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{
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ASSERT(! pcsz ||
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IS_VALID_STRING_PTR(pcsz, CSTR));
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return(pcsz ? StrSpn(pcsz, g_cszWhiteSpace) < lstrlen(pcsz) : FALSE);
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}
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PUBLIC_CODE HRESULT CopyURLProtocol(PCSTR pcszURL, PSTR *ppszProtocol)
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{
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HRESULT hr;
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PARSEDURL pu;
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ASSERT(IS_VALID_STRING_PTR(pcszURL, CSTR));
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ASSERT(IS_VALID_WRITE_PTR(ppszProtocol, PSTR));
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*ppszProtocol = NULL;
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pu.cbSize = sizeof(pu);
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hr = ParseURL(pcszURL, &pu);
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if (hr == S_OK)
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{
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// (+ 1) for null terminator.
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*ppszProtocol = new(char[pu.cchProtocol + 1]);
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if (*ppszProtocol)
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{
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// (+ 1) for null terminator.
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lstrcpyn(*ppszProtocol, pu.pszProtocol, pu.cchProtocol + 1);
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ASSERT((UINT)lstrlen(*ppszProtocol) == pu.cchProtocol);
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}
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else
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hr = E_OUTOFMEMORY;
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}
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ASSERT(FAILED(hr) ||
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(hr == S_OK &&
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IS_VALID_STRING_PTR(*ppszProtocol, STR)));
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return(hr);
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}
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PUBLIC_CODE HRESULT CopyURLSuffix(PCSTR pcszURL, PSTR *ppszSuffix)
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{
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HRESULT hr;
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PARSEDURL pu;
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ASSERT(IS_VALID_STRING_PTR(pcszURL, CSTR));
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ASSERT(IS_VALID_WRITE_PTR(ppszSuffix, PSTR));
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*ppszSuffix = NULL;
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hr = ParseURL(pcszURL, &pu);
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if (hr == S_OK)
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{
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// (+ 1) for null terminator.
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*ppszSuffix = new(char[pu.cchSuffix + 1]);
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if (*ppszSuffix)
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{
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// (+ 1) for null terminator.
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lstrcpyn(*ppszSuffix, pu.pszSuffix, pu.cchSuffix + 1);
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ASSERT((UINT)lstrlen(*ppszSuffix) == pu.cchSuffix);
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hr = S_OK;
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}
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else
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hr = E_OUTOFMEMORY;
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}
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ASSERT(FAILED(hr) ||
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IS_VALID_STRING_PTR(*ppszSuffix, STR));
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return(hr);
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}
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PUBLIC_CODE HRESULT GetProtocolKey(PCSTR pcszProtocol, PCSTR pcszSubKey,
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PSTR *ppszKey)
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{
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HRESULT hr;
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ULONG ulcbKeyLen;
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ASSERT(IS_VALID_STRING_PTR(pcszProtocol, STR));
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ASSERT(IS_VALID_STRING_PTR(pcszSubKey, CSTR));
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ASSERT(IS_VALID_WRITE_PTR(ppszKey, PSTR));
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// (+ 1) for possible separator.
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// (+ 1) for null terminator.
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ulcbKeyLen = lstrlen(pcszProtocol) + 1 + lstrlen(pcszSubKey) + 1;
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*ppszKey = new(char[ulcbKeyLen]);
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if (*ppszKey)
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{
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lstrcpy(*ppszKey, pcszProtocol);
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PathAppend(*ppszKey, pcszSubKey);
|
||
|
|
|
||
|
|
ASSERT((UINT)lstrlen(*ppszKey) < ulcbKeyLen);
|
||
|
|
|
||
|
|
hr = S_OK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
hr = E_OUTOFMEMORY;
|
||
|
|
|
||
|
|
ASSERT((hr == S_OK &&
|
||
|
|
IS_VALID_STRING_PTR(*ppszKey, STR)) ||
|
||
|
|
hr == E_OUTOFMEMORY);
|
||
|
|
|
||
|
|
return(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PUBLIC_CODE HRESULT GetURLKey(PCSTR pcszURL, PCSTR pcszSubKey, PSTR *pszKey)
|
||
|
|
{
|
||
|
|
HRESULT hr;
|
||
|
|
PSTR pszProtocol;
|
||
|
|
|
||
|
|
ASSERT(IS_VALID_STRING_PTR(pcszURL, CSTR));
|
||
|
|
ASSERT(IS_VALID_STRING_PTR(pcszSubKey, CSTR));
|
||
|
|
ASSERT(IS_VALID_WRITE_PTR(pszKey, PSTR));
|
||
|
|
|
||
|
|
*pszKey = NULL;
|
||
|
|
|
||
|
|
hr = CopyURLProtocol(pcszURL, &pszProtocol);
|
||
|
|
|
||
|
|
if (hr == S_OK)
|
||
|
|
{
|
||
|
|
hr = GetProtocolKey(pszProtocol, pcszSubKey, pszKey);
|
||
|
|
|
||
|
|
delete pszProtocol;
|
||
|
|
pszProtocol = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
ASSERT((hr == S_OK &&
|
||
|
|
IS_VALID_STRING_PTR(*pszKey, STR)) ||
|
||
|
|
FAILED(hr));
|
||
|
|
|
||
|
|
return(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/********************************** Methods **********************************/
|
||
|
|
|
||
|
|
|
||
|
|
HRESULT STDMETHODCALLTYPE InternetShortcut::GetIconLocation(
|
||
|
|
UINT uInFlags,
|
||
|
|
PSTR pszIconFile,
|
||
|
|
UINT ucbIconFileBufLen,
|
||
|
|
PINT pniIcon,
|
||
|
|
PUINT puOutFlags)
|
||
|
|
{
|
||
|
|
HRESULT hr;
|
||
|
|
|
||
|
|
DebugEntry(InternetShortcut::GetIconLocation);
|
||
|
|
|
||
|
|
ASSERT(IS_VALID_STRUCT_PTR(this, CInternetShortcut));
|
||
|
|
ASSERT(FLAGS_ARE_VALID(uInFlags, ALL_GIL_IN_FLAGS));
|
||
|
|
ASSERT(IS_VALID_WRITE_BUFFER_PTR(pszIconFile, STR, ucbIconFileBufLen));
|
||
|
|
ASSERT(IS_VALID_WRITE_PTR(pniIcon, INT));
|
||
|
|
ASSERT(IS_VALID_WRITE_PTR(puOutFlags, UINT));
|
||
|
|
|
||
|
|
if (IS_FLAG_CLEAR(uInFlags, GIL_OPENICON))
|
||
|
|
{
|
||
|
|
hr = GetIconLocation(pszIconFile, ucbIconFileBufLen, pniIcon);
|
||
|
|
|
||
|
|
if (hr != S_OK)
|
||
|
|
{
|
||
|
|
if (m_pszURL)
|
||
|
|
{
|
||
|
|
PSTR pszDefaultIconKey;
|
||
|
|
|
||
|
|
// Look up URL icon based on protocol handler.
|
||
|
|
|
||
|
|
hr = GetURLKey(m_pszURL, s_cszDefaultIconSubKey,
|
||
|
|
&pszDefaultIconKey);
|
||
|
|
|
||
|
|
if (hr == S_OK)
|
||
|
|
{
|
||
|
|
hr = GetURLIcon(g_hkeyURLProtocols, pszDefaultIconKey,
|
||
|
|
pszIconFile, ucbIconFileBufLen, pniIcon);
|
||
|
|
|
||
|
|
delete pszDefaultIconKey;
|
||
|
|
pszDefaultIconKey = NULL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
hr = S_FALSE;
|
||
|
|
|
||
|
|
if (hr == S_FALSE)
|
||
|
|
{
|
||
|
|
// Use generic URL icon.
|
||
|
|
|
||
|
|
hr = GetGenericURLIcon(pszIconFile, ucbIconFileBufLen, pniIcon);
|
||
|
|
|
||
|
|
if (hr == S_OK) {
|
||
|
|
TRACE_OUT(("InternetShortcut::GetIconLocation(): Using generic URL icon."));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hr == S_OK)
|
||
|
|
{
|
||
|
|
char rgchFullPath[MAX_PATH_LEN];
|
||
|
|
|
||
|
|
hr = FullyQualifyPath(pszIconFile, rgchFullPath,
|
||
|
|
sizeof(rgchFullPath));
|
||
|
|
|
||
|
|
if (hr == S_OK)
|
||
|
|
{
|
||
|
|
if ((UINT)lstrlen(rgchFullPath) < ucbIconFileBufLen)
|
||
|
|
lstrcpy(pszIconFile, rgchFullPath);
|
||
|
|
else
|
||
|
|
hr = E_FAIL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
// No "open look" icon.
|
||
|
|
hr = S_FALSE;
|
||
|
|
|
||
|
|
if (hr != S_OK)
|
||
|
|
{
|
||
|
|
if (ucbIconFileBufLen > 0)
|
||
|
|
*pszIconFile = '\0';
|
||
|
|
|
||
|
|
*pniIcon = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
*puOutFlags = 0;
|
||
|
|
|
||
|
|
ASSERT(IS_VALID_STRUCT_PTR(this, CInternetShortcut));
|
||
|
|
ASSERT(IsValidIconIndex(hr, pszIconFile, ucbIconFileBufLen, *pniIcon) &&
|
||
|
|
FLAGS_ARE_VALID(*puOutFlags, ALL_GIL_OUT_FLAGS));
|
||
|
|
|
||
|
|
DebugExitHRESULT(InternetShortcut::GetIconLocation, hr);
|
||
|
|
|
||
|
|
return(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#pragma warning(disable:4100) /* "unreferenced formal parameter" warning */
|
||
|
|
|
||
|
|
HRESULT STDMETHODCALLTYPE InternetShortcut::Extract(PCSTR pcszIconFile,
|
||
|
|
UINT uiIcon,
|
||
|
|
PHICON phiconLarge,
|
||
|
|
PHICON phiconSmall,
|
||
|
|
UINT ucIconSize)
|
||
|
|
{
|
||
|
|
HRESULT hr;
|
||
|
|
|
||
|
|
DebugEntry(InternetShortcut::Extract);
|
||
|
|
|
||
|
|
ASSERT(IS_VALID_STRUCT_PTR(this, CInternetShortcut));
|
||
|
|
ASSERT(IS_VALID_STRING_PTR(pcszIconFile, CSTR));
|
||
|
|
ASSERT(IsValidIconIndex(S_OK, pcszIconFile, MAX_PATH_LEN, uiIcon));
|
||
|
|
ASSERT(IS_VALID_WRITE_PTR(phiconLarge, HICON));
|
||
|
|
ASSERT(IS_VALID_WRITE_PTR(phiconSmall, HICON));
|
||
|
|
// FEATURE: Validate ucIconSize here.
|
||
|
|
|
||
|
|
*phiconLarge = NULL;
|
||
|
|
*phiconSmall = NULL;
|
||
|
|
|
||
|
|
// Use caller's default implementation of ExtractIcon().
|
||
|
|
|
||
|
|
hr = S_FALSE;
|
||
|
|
|
||
|
|
ASSERT(IS_VALID_STRUCT_PTR(this, CInternetShortcut));
|
||
|
|
ASSERT((hr == S_OK &&
|
||
|
|
IS_VALID_HANDLE(*phiconLarge, ICON) &&
|
||
|
|
IS_VALID_HANDLE(*phiconSmall, ICON)) ||
|
||
|
|
(hr != S_OK &&
|
||
|
|
! *phiconLarge &&
|
||
|
|
! *phiconSmall));
|
||
|
|
|
||
|
|
DebugExitHRESULT(InternetShortcut::Extract, hr);
|
||
|
|
|
||
|
|
return(hr);
|
||
|
|
}
|
||
|
|
|
||
|
|
#pragma warning(default:4100) /* "unreferenced formal parameter" warning */
|
||
|
|
|