CShellLink.cpp

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/*
 *
 *      Copyright 1997  Marcus Meissner
 *      Copyright 1998  Juergen Schmied
 *      Copyright 2005  Mike McCormack
 *      Copyright 2009  Andrew Hill
 *      Copyright 2013  Dominik Hornung
 *      Copyright 2017  Hermes Belusca-Maito
 *      Copyright 2018-2024 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 *
 * NOTES
 *   Nearly complete information about the binary formats
 *   of .lnk files available at http://www.wotsit.org
 *
 *  You can use winedump to examine the contents of a link file:
 *   winedump lnk sc.lnk
 *
 *  MSI advertised shortcuts are totally undocumented.  They provide an
 *   icon for a program that is not yet installed, and invoke MSI to
 *   install the program when the shortcut is clicked on.  They are
 *   created by passing a special string to SetPath, and the information
 *   in that string is parsed an stored.
 */
/*
 * In the following is listed more documentation about the Shell Link file format,
 * as well as its interface.
 *
 * General introduction about "Shell Links" (MSDN):
 *   https://learn.microsoft.com/en-us/windows/win32/shell/links
 *
 *
 * Details of the file format:
 *
 * - Official MSDN documentation "[MS-SHLLINK]: Shell Link (.LNK) Binary File Format":
 *   https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-shllink/16cb4ca1-9339-4d0c-a68d-bf1d6cc0f943
 *
 * - Forensics:
 *   http://forensicswiki.org/wiki/LNK
 *   http://computerforensics.parsonage.co.uk/downloads/TheMeaningofLIFE.pdf
 *   https://ithreats.files.wordpress.com/2009/05/lnk_the_windows_shortcut_file_format.pdf
 *   https://github.com/libyal/liblnk/blob/master/documentation/Windows%20Shortcut%20File%20(LNK)%20format.asciidoc
 *
 * - List of possible shell link header flags (SHELL_LINK_DATA_FLAGS enumeration):
 *   https://learn.microsoft.com/en-us/windows/win32/api/shlobj_core/ne-shlobj_core-shell_link_data_flags
 *   https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-shllink/ae350202-3ba9-4790-9e9e-98935f4ee5af
 *
 *
 * In addition to storing its target by using a PIDL, a shell link file also
 * stores metadata to make the shell able to track the link target, in situations
 * where the link target is moved amongst local or network directories, or moved
 * to different volumes. For this, two structures are used:
 *
 * - The first and oldest one (from NewShell/WinNT4) is the "LinkInfo" structure,
 *   stored in a serialized manner at the beginning of the shell link file:
 *   https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-shllink/6813269d-0cc8-4be2-933f-e96e8e3412dc
 *   The official API for manipulating this is located in LINKINFO.DLL .
 *
 * - The second, more recent one, is an extra binary block appended to the
 *   extra-data list of the shell link file: this is the "TrackerDataBlock":
 *   https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-shllink/df8e3748-fba5-4524-968a-f72be06d71fc
 *   Its purpose is for link tracking, and works in coordination with the
 *   "Distributed Link Tracking" service ('TrkWks' client, 'TrkSvr' server).
 *   See a detailed explanation at:
 *   http://www.serverwatch.com/tutorials/article.php/1476701/Searching-for-the-Missing-Link-Distributed-Link-Tracking.htm
 *
 *
 * MSI installations most of the time create so-called "advertised shortcuts".
 * They provide an icon for a program that may not be installed yet, and invoke
 * MSI to install the program when the shortcut is opened (resolved).
 * The philosophy of this approach is explained in detail inside the MSDN article
 * "Application Resiliency: Unlock the Hidden Features of Windows Installer"
 * (by Michael Sanford), here:
 *   https://learn.microsoft.com/en-us/previous-versions/dotnet/articles/aa302344(v=msdn.10)
 *
 * This functionality is implemented by adding a binary "Darwin" data block
 * of type "EXP_DARWIN_LINK", signature EXP_DARWIN_ID_SIG == 0xA0000006,
 * to the shell link file:
 *   https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-shllink/48f8a4c4-99fe-4787-a39f-b1367103eba8
 * or, this could be done more simply by specifying a special link target path
 * with the IShellLink::SetPath() function. Defining the following GUID:
 *   SHELL32_AdvtShortcutComponent = "::{9db1186e-40df-11d1-aa8c-00c04fb67863}:"
 * setting a target of the form:
 *   "::{SHELL32_AdvtShortcutComponent}:<MSI_App_ID>"
 * would automatically create the necessary binary block.
 *
 * With that, the target of the shortcut now becomes the MSI data. The latter
 * is parsed from MSI and retrieved by the shell that then can run the program.
 *
 * This MSI functionality, dubbed "link blessing", actually originates from an
 * older technology introduced in Internet Explorer 3 (and now obsolete since
 * Internet Explorer 7), called "MS Internet Component Download (MSICD)", see
 * this MSDN introductory article:
 *   https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/aa741198(v=vs.85)
 * and leveraged in Internet Explorer 4 with "Software Update Channels", see:
 *   https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/aa740931(v=vs.85)
 * Applications supporting this technology could present shell links having
 * a special target, see subsection "Modifying the Shortcut" in the article:
 *   https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/platform-apis/aa741201(v=vs.85)#pub_shor
 *
 * Similarly as for the MSI shortcuts, these MSICD shortcuts are created by
 * specifying a special link target path with the IShellLink::SetPath() function,
 * defining the following GUID:
 *   SHELL32_AdvtShortcutProduct = "::{9db1186f-40df-11d1-aa8c-00c04fb67863}:"
 * and setting a target of the form:
 *   "::{SHELL32_AdvtShortcutProduct}:<AppName>::<Path>" .
 * A tool, called "blesslnk.exe", was also provided for automatizing the process;
 * its ReadMe can be found in the (now outdated) MS "Internet Client SDK" (INetSDK,
 * for MS Windows 95 and NT), whose contents can be read at:
 *   http://www.msfn.org/board/topic/145352-new-windows-lnk-vulnerability/?page=4#comment-944223
 * The MS INetSDK can be found at:
 *   https://web.archive.org/web/20100924000013/http://support.microsoft.com/kb/177877
 *
 * Internally the shell link target of these MSICD shortcuts is converted into
 * a binary data block of a type similar to Darwin / "EXP_DARWIN_LINK", but with
 * a different signature EXP_LOGO3_ID_SIG == 0xA0000007 . Such shell links are
 * called "Logo3" shortcuts. They were evoked in this user comment in "The Old
 * New Thing" blog:
 *   https://web.archive.org/web/20190110073640/https://blogs.msdn.microsoft.com/oldnewthing/20121210-00/?p=5883#comment-1025083
 *
 * The shell exports the API 'SoftwareUpdateMessageBox' (in shdocvw.dll) that
 * displays a message when an update for an application supporting this
 * technology is available.
 *
 */
 
#include "precomp.h"
 
#include <appmgmt.h>
 
WINE_DEFAULT_DEBUG_CHANNEL(shell);
 
/*
 * Allows to define whether or not Windows-compatible behaviour
 * should be adopted when setting and retrieving icon location paths.
 * See CShellLink::SetIconLocation(LPCWSTR pszIconPath, INT iIcon)
 * for more details.
 */
#define ICON_LINK_WINDOWS_COMPAT
 
#define SHLINK_LOCAL  0
#define SHLINK_REMOTE 1
 
/* link file formats */
 
#include "pshpack1.h"
 
struct LOCATION_INFO
{
    DWORD        dwTotalSize;
    DWORD        dwHeaderSize;
    DWORD        dwFlags;
    DWORD        dwVolTableOfs;
    DWORD        dwLocalPathOfs;
    DWORD        dwNetworkVolTableOfs;
    DWORD        dwFinalPathOfs;
};
 
struct LOCAL_VOLUME_INFO
{
    DWORD        dwSize;
    DWORD        dwType;
    DWORD        dwVolSerial;
    DWORD        dwVolLabelOfs;
};
 
struct volume_info
{
    DWORD        type;
    DWORD        serial;
    WCHAR        label[12];  /* assume 8.3 */
};
 
#include "poppack.h"
 
/* IShellLink Implementation */
 
static HRESULT ShellLink_UpdatePath(LPCWSTR sPathRel, LPCWSTR path, LPCWSTR sWorkDir, LPWSTR* psPath);
 
/* strdup on the process heap */
static LPWSTR __inline HEAP_strdupAtoW(HANDLE heap, DWORD flags, LPCSTR str)
{
    INT len;
    LPWSTR p;
 
    assert(str);
 
    len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);
    p = (LPWSTR)HeapAlloc(heap, flags, len * sizeof(WCHAR));
    if (!p)
        return p;
    MultiByteToWideChar(CP_ACP, 0, str, -1, p, len);
    return p;
}
 
static LPWSTR __inline strdupW(LPCWSTR src)
{
    LPWSTR dest;
    if (!src) return NULL;
    dest = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, (wcslen(src) + 1) * sizeof(WCHAR));
    if (dest)
        wcscpy(dest, src);
    return dest;
}
 
static BOOL PathEnvSubstIsDirectory(LPCWSTR pszPath)
{
    // Note: Don't call SHExpandEnvironmentStringsW here, we need the required length
    WCHAR szStack[MAX_PATH];
    DWORD cch = ExpandEnvironmentStringsW(pszPath, szStack, _countof(szStack));
    if (cch <= _countof(szStack))
        return cch && PathIsDirectory(szStack);
 
    PWSTR szHeap = (PWSTR)SHAlloc(cch);
    if (!szHeap)
        return FALSE;
    BOOL bResult = ExpandEnvironmentStringsW(pszPath, szHeap, cch) && PathIsDirectory(szHeap);
    SHFree(szHeap);
    return bResult;
}
 
// TODO: Use it for constructor & destructor too
VOID CShellLink::Reset()
{
    ILFree(m_pPidl);
    m_pPidl = NULL;
 
    HeapFree(GetProcessHeap(), 0, m_sPath);
    m_sPath = NULL;
    ZeroMemory(&volume, sizeof(volume));
 
    HeapFree(GetProcessHeap(), 0, m_sDescription);
    m_sDescription = NULL;
    HeapFree(GetProcessHeap(), 0, m_sPathRel);
    m_sPathRel = NULL;
    HeapFree(GetProcessHeap(), 0, m_sWorkDir);
    m_sWorkDir = NULL;
    HeapFree(GetProcessHeap(), 0, m_sArgs);
    m_sArgs = NULL;
    HeapFree(GetProcessHeap(), 0, m_sIcoPath);
    m_sIcoPath = NULL;
 
    m_bRunAs = FALSE;
    m_bDirty = FALSE;
 
    if (m_pDBList)
        SHFreeDataBlockList(m_pDBList);
    m_pDBList = NULL;
 
    sProduct = sComponent = NULL;
}
 
CShellLink::CShellLink()
{
    m_Header.dwSize = sizeof(m_Header);
    m_Header.clsid = CLSID_ShellLink;
    m_Header.dwFlags = 0;
 
    m_Header.dwFileAttributes = 0;
    ZeroMemory(&m_Header.ftCreationTime, sizeof(m_Header.ftCreationTime));
    ZeroMemory(&m_Header.ftLastAccessTime, sizeof(m_Header.ftLastAccessTime));
    ZeroMemory(&m_Header.ftLastWriteTime, sizeof(m_Header.ftLastWriteTime));
    m_Header.nFileSizeLow = 0;
 
    m_Header.nIconIndex = 0;
    m_Header.nShowCommand = SW_SHOWNORMAL;
    m_Header.wHotKey = 0;
 
    m_pPidl = NULL;
 
    m_sPath = NULL;
    ZeroMemory(&volume, sizeof(volume));
 
    m_sDescription = NULL;
    m_sPathRel = NULL;
    m_sWorkDir = NULL;
    m_sArgs = NULL;
    m_sIcoPath = NULL;
    m_bRunAs = FALSE;
    m_bDirty = FALSE;
    m_pDBList = NULL;
    m_bInInit = FALSE;
    m_hIcon = NULL;
 
    m_sLinkPath = NULL;
 
    sProduct = sComponent = NULL;
}
 
CShellLink::~CShellLink()
{
    TRACE("-- destroying IShellLink(%p)\n", this);
 
    ILFree(m_pPidl);
 
    HeapFree(GetProcessHeap(), 0, m_sPath);
 
    HeapFree(GetProcessHeap(), 0, m_sDescription);
    HeapFree(GetProcessHeap(), 0, m_sPathRel);
    HeapFree(GetProcessHeap(), 0, m_sWorkDir);
    HeapFree(GetProcessHeap(), 0, m_sArgs);
    HeapFree(GetProcessHeap(), 0, m_sIcoPath);
    HeapFree(GetProcessHeap(), 0, m_sLinkPath);
    SHFreeDataBlockList(m_pDBList);
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetClassID(CLSID *pclsid)
{
    TRACE("%p %p\n", this, pclsid);
 
    if (pclsid == NULL)
        return E_POINTER;
    *pclsid = CLSID_ShellLink;
    return S_OK;
}
 
/************************************************************************
 * IPersistStream_IsDirty (IPersistStream)
 */
HRESULT STDMETHODCALLTYPE CShellLink::IsDirty()
{
    TRACE("(%p)\n", this);
    return (m_bDirty ? S_OK : S_FALSE);
}
 
HRESULT STDMETHODCALLTYPE CShellLink::Load(LPCOLESTR pszFileName, DWORD dwMode)
{
    TRACE("(%p, %s, %x)\n", this, debugstr_w(pszFileName), dwMode);
 
    if (dwMode == 0)
        dwMode = STGM_READ | STGM_SHARE_DENY_WRITE;
 
    CComPtr<IStream> stm;
    HRESULT hr = SHCreateStreamOnFileW(pszFileName, dwMode, &stm);
    if (SUCCEEDED(hr))
    {
        HeapFree(GetProcessHeap(), 0, m_sLinkPath);
        m_sLinkPath = strdupW(pszFileName);
        hr = Load(stm);
        ShellLink_UpdatePath(m_sPathRel, pszFileName, m_sWorkDir, &m_sPath);
        m_bDirty = FALSE;
    }
    TRACE("-- returning hr %08x\n", hr);
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::Save(LPCOLESTR pszFileName, BOOL fRemember)
{
    BOOL bAlreadyExists;
    WCHAR szFullPath[MAX_PATH];
 
    TRACE("(%p)->(%s)\n", this, debugstr_w(pszFileName));
 
    if (!pszFileName)
        return E_FAIL;
 
    bAlreadyExists = PathFileExistsW(pszFileName);
 
    CComPtr<IStream> stm;
    HRESULT hr = SHCreateStreamOnFileW(pszFileName, STGM_READWRITE | STGM_CREATE | STGM_SHARE_EXCLUSIVE, &stm);
    if (SUCCEEDED(hr))
    {
        hr = Save(stm, FALSE);
 
        if (SUCCEEDED(hr))
        {
            GetFullPathNameW(pszFileName, _countof(szFullPath), szFullPath, NULL);
            if (bAlreadyExists)
                SHChangeNotify(SHCNE_UPDATEITEM, SHCNF_PATHW, szFullPath, NULL);
            else
                SHChangeNotify(SHCNE_CREATE, SHCNF_PATHW, szFullPath, NULL);
 
            if (m_sLinkPath)
                HeapFree(GetProcessHeap(), 0, m_sLinkPath);
 
            m_sLinkPath = strdupW(pszFileName);
            m_bDirty = FALSE;
        }
        else
        {
            DeleteFileW(pszFileName);
            WARN("Failed to create shortcut %s\n", debugstr_w(pszFileName));
        }
    }
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SaveCompleted(LPCOLESTR pszFileName)
{
    FIXME("(%p)->(%s)\n", this, debugstr_w(pszFileName));
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetCurFile(LPOLESTR *ppszFileName)
{
    *ppszFileName = NULL;
 
    if (!m_sLinkPath)
    {
        /* IPersistFile::GetCurFile called before IPersistFile::Save */
        return S_FALSE;
    }
 
    *ppszFileName = (LPOLESTR)CoTaskMemAlloc((wcslen(m_sLinkPath) + 1) * sizeof(WCHAR));
    if (!*ppszFileName)
    {
        /* out of memory */
        return E_OUTOFMEMORY;
    }
 
    /* copy last saved filename */
    wcscpy(*ppszFileName, m_sLinkPath);
 
    return S_OK;
}
 
static HRESULT Stream_LoadString(IStream* stm, BOOL unicode, LPWSTR *pstr)
{
    TRACE("%p\n", stm);
 
    USHORT len;
    DWORD count = 0;
    HRESULT hr = stm->Read(&len, sizeof(len), &count);
    if (FAILED(hr) || count != sizeof(len))
        return E_FAIL;
 
    if (unicode)
        len *= sizeof(WCHAR);
 
    TRACE("reading %d\n", len);
    LPSTR temp = (LPSTR)HeapAlloc(GetProcessHeap(), 0, len + sizeof(WCHAR));
    if (!temp)
        return E_OUTOFMEMORY;
    count = 0;
    hr = stm->Read(temp, len, &count);
    if (FAILED(hr) || count != len)
    {
        HeapFree(GetProcessHeap(), 0, temp);
        return E_FAIL;
    }
 
    TRACE("read %s\n", debugstr_an(temp, len));
 
    /* convert to unicode if necessary */
    LPWSTR str;
    if (!unicode)
    {
        count = MultiByteToWideChar(CP_ACP, 0, temp, len, NULL, 0);
        str = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, (count + 1) * sizeof(WCHAR));
        if (!str)
        {
            HeapFree(GetProcessHeap(), 0, temp);
            return E_OUTOFMEMORY;
        }
        MultiByteToWideChar(CP_ACP, 0, temp, len, str, count);
        HeapFree(GetProcessHeap(), 0, temp);
    }
    else
    {
        count /= sizeof(WCHAR);
        str = (LPWSTR)temp;
    }
    str[count] = 0;
 
    *pstr = str;
 
    return S_OK;
}
 
 
/*
 * NOTE: The following 5 functions are part of LINKINFO.DLL
 */
static BOOL ShellLink_GetVolumeInfo(LPCWSTR path, CShellLink::volume_info *volume)
{
    WCHAR drive[4] = { path[0], ':', '\\', 0 };
 
    volume->type = GetDriveTypeW(drive);
    BOOL bRet = GetVolumeInformationW(drive, volume->label, _countof(volume->label), &volume->serial, NULL, NULL, NULL, 0);
    TRACE("ret = %d type %d serial %08x name %s\n", bRet,
          volume->type, volume->serial, debugstr_w(volume->label));
    return bRet;
}
 
static HRESULT Stream_ReadChunk(IStream* stm, LPVOID *data)
{
    struct sized_chunk
    {
        DWORD size;
        unsigned char data[1];
    } *chunk;
 
    TRACE("%p\n", stm);
 
    DWORD size;
    ULONG count;
    HRESULT hr = stm->Read(&size, sizeof(size), &count);
    if (FAILED(hr) || count != sizeof(size))
        return E_FAIL;
 
    chunk = static_cast<sized_chunk *>(HeapAlloc(GetProcessHeap(), 0, size));
    if (!chunk)
        return E_OUTOFMEMORY;
 
    chunk->size = size;
    hr = stm->Read(chunk->data, size - sizeof(size), &count);
    if (FAILED(hr) || count != (size - sizeof(size)))
    {
        HeapFree(GetProcessHeap(), 0, chunk);
        return E_FAIL;
    }
 
    TRACE("Read %d bytes\n", chunk->size);
 
    *data = chunk;
 
    return S_OK;
}
 
static BOOL Stream_LoadVolume(LOCAL_VOLUME_INFO *vol, CShellLink::volume_info *volume)
{
    volume->serial = vol->dwVolSerial;
    volume->type = vol->dwType;
 
    if (!vol->dwVolLabelOfs)
        return FALSE;
    if (vol->dwSize <= vol->dwVolLabelOfs)
        return FALSE;
    INT len = vol->dwSize - vol->dwVolLabelOfs;
 
    LPSTR label = (LPSTR)vol;
    label += vol->dwVolLabelOfs; // FIXME: 0x14 Unicode
    MultiByteToWideChar(CP_ACP, 0, label, len, volume->label, _countof(volume->label));
 
    return TRUE;
}
 
static LPWSTR Stream_LoadPath(LPCSTR p, DWORD maxlen)
{
    UINT len = 0;
 
    while (len < maxlen && p[len])
        len++;
 
    UINT wlen = MultiByteToWideChar(CP_ACP, 0, p, len, NULL, 0);
    LPWSTR path = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, (wlen + 1) * sizeof(WCHAR));
    if (!path)
        return NULL;
    MultiByteToWideChar(CP_ACP, 0, p, len, path, wlen);
    path[wlen] = 0;
 
    return path;
}
 
static HRESULT Stream_LoadLocation(IStream *stm,
                                   CShellLink::volume_info *volume, LPWSTR *path)
{
    char *p = NULL;
    HRESULT hr = Stream_ReadChunk(stm, (LPVOID*) &p);
    if (FAILED(hr))
        return hr;
 
    LOCATION_INFO *loc = reinterpret_cast<LOCATION_INFO *>(p);
    if (loc->dwTotalSize < sizeof(LOCATION_INFO))
    {
        HeapFree(GetProcessHeap(), 0, p);
        return E_FAIL;
    }
 
    /* if there's valid local volume information, load it */
    if (loc->dwVolTableOfs &&
        ((loc->dwVolTableOfs + sizeof(LOCAL_VOLUME_INFO)) <= loc->dwTotalSize))
    {
        LOCAL_VOLUME_INFO *volume_info;
 
        volume_info = (LOCAL_VOLUME_INFO*) &p[loc->dwVolTableOfs];
        Stream_LoadVolume(volume_info, volume);
    }
 
    /* if there's a local path, load it */
    DWORD n = loc->dwLocalPathOfs;
    if (n && n < loc->dwTotalSize)
        *path = Stream_LoadPath(&p[n], loc->dwTotalSize - n); // FIXME: Unicode offset (if present)
 
    TRACE("type %d serial %08x name %s path %s\n", volume->type,
          volume->serial, debugstr_w(volume->label), debugstr_w(*path));
 
    HeapFree(GetProcessHeap(), 0, p);
    return S_OK;
}
 
 
/*
 * The format of the advertised shortcut info is:
 *
 *  Offset     Description
 *  ------     -----------
 *    0          Length of the block (4 bytes, usually 0x314)
 *    4          tag (dword)
 *    8          string data in ASCII
 *    8+0x104    string data in UNICODE
 *
 * In the original Win32 implementation the buffers are not initialized
 * to zero, so data trailing the string is random garbage.
 */
HRESULT CShellLink::GetAdvertiseInfo(LPWSTR *str, DWORD dwSig)
{
    LPEXP_DARWIN_LINK pInfo;
 
    *str = NULL;
 
    pInfo = (LPEXP_DARWIN_LINK)SHFindDataBlock(m_pDBList, dwSig);
    if (!pInfo)
        return E_FAIL;
 
    /* Make sure that the size of the structure is valid */
    if (pInfo->dbh.cbSize != sizeof(*pInfo))
    {
        ERR("Ooops. This structure is not as expected...\n");
        return E_FAIL;
    }
 
    TRACE("dwSig %08x  string = '%s'\n", pInfo->dbh.dwSignature, debugstr_w(pInfo->szwDarwinID));
 
    *str = pInfo->szwDarwinID;
    return S_OK;
}
 
/************************************************************************
 * IPersistStream_Load (IPersistStream)
 */
HRESULT STDMETHODCALLTYPE CShellLink::Load(IStream *stm)
{
    TRACE("%p %p\n", this, stm);
 
    if (!stm)
        return STG_E_INVALIDPOINTER;
 
    /* Free all the old stuff */
    Reset();
 
    ULONG dwBytesRead = 0;
    HRESULT hr = stm->Read(&m_Header, sizeof(m_Header), &dwBytesRead);
    if (FAILED(hr))
        return hr;
 
    if (dwBytesRead != sizeof(m_Header))
        return E_FAIL;
    if (m_Header.dwSize != sizeof(m_Header))
        return E_FAIL;
    if (!IsEqualIID(m_Header.clsid, CLSID_ShellLink))
        return E_FAIL;
 
    /* Load the new data in order */
 
    if (TRACE_ON(shell))
    {
        SYSTEMTIME stCreationTime;
        SYSTEMTIME stLastAccessTime;
        SYSTEMTIME stLastWriteTime;
        WCHAR sTemp[MAX_PATH];
 
        FileTimeToSystemTime(&m_Header.ftCreationTime, &stCreationTime);
        FileTimeToSystemTime(&m_Header.ftLastAccessTime, &stLastAccessTime);
        FileTimeToSystemTime(&m_Header.ftLastWriteTime, &stLastWriteTime);
 
        GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &stCreationTime,
                       NULL, sTemp, _countof(sTemp));
        TRACE("-- stCreationTime: %s\n", debugstr_w(sTemp));
        GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &stLastAccessTime,
                       NULL, sTemp, _countof(sTemp));
        TRACE("-- stLastAccessTime: %s\n", debugstr_w(sTemp));
        GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &stLastWriteTime,
                       NULL, sTemp, _countof(sTemp));
        TRACE("-- stLastWriteTime: %s\n", debugstr_w(sTemp));
    }
 
    /* load all the new stuff */
    if (m_Header.dwFlags & SLDF_HAS_ID_LIST)
    {
        hr = ILLoadFromStream(stm, &m_pPidl);
        if (FAILED(hr))
            return hr;
    }
    pdump(m_pPidl);
 
    /* Load the location information... */
    if (m_Header.dwFlags & SLDF_HAS_LINK_INFO)
    {
        hr = Stream_LoadLocation(stm, &volume, &m_sPath);
        if (FAILED(hr))
            return hr;
    }
    /* ... but if it is required not to use it, clear it */
    if (m_Header.dwFlags & SLDF_FORCE_NO_LINKINFO)
    {
        HeapFree(GetProcessHeap(), 0, m_sPath);
        m_sPath = NULL;
        ZeroMemory(&volume, sizeof(volume));
    }
 
    BOOL unicode = !!(m_Header.dwFlags & SLDF_UNICODE);
 
    if (m_Header.dwFlags & SLDF_HAS_NAME)
    {
        hr = Stream_LoadString(stm, unicode, &m_sDescription);
        if (FAILED(hr))
            return hr;
        TRACE("Description  -> %s\n", debugstr_w(m_sDescription));
    }
 
    if (m_Header.dwFlags & SLDF_HAS_RELPATH)
    {
        hr = Stream_LoadString(stm, unicode, &m_sPathRel);
        if (FAILED(hr))
            return hr;
        TRACE("Relative Path-> %s\n", debugstr_w(m_sPathRel));
    }
 
    if (m_Header.dwFlags & SLDF_HAS_WORKINGDIR)
    {
        hr = Stream_LoadString(stm, unicode, &m_sWorkDir);
        if (FAILED(hr))
            return hr;
        PathRemoveBackslash(m_sWorkDir);
        TRACE("Working Dir  -> %s\n", debugstr_w(m_sWorkDir));
    }
 
    if (m_Header.dwFlags & SLDF_HAS_ARGS)
    {
        hr = Stream_LoadString(stm, unicode, &m_sArgs);
        if (FAILED(hr))
            return hr;
        TRACE("Arguments    -> %s\n", debugstr_w(m_sArgs));
    }
 
    if (m_Header.dwFlags & SLDF_HAS_ICONLOCATION)
    {
        hr = Stream_LoadString(stm, unicode, &m_sIcoPath);
        if (FAILED(hr))
            return hr;
        TRACE("Icon file    -> %s\n", debugstr_w(m_sIcoPath));
    }
 
    /* Now load the optional data block list */
    hr = SHReadDataBlockList(stm, &m_pDBList);
    if (FAILED(hr)) // FIXME: Should we fail?
        return hr;
 
    LPEXP_SPECIAL_FOLDER pSpecial = (LPEXP_SPECIAL_FOLDER)SHFindDataBlock(m_pDBList, EXP_SPECIAL_FOLDER_SIG);
    if (pSpecial && pSpecial->cbSize == sizeof(*pSpecial) && ILGetSize(m_pPidl) > pSpecial->cbOffset)
    {
        if (LPITEMIDLIST folder = SHCloneSpecialIDList(NULL, pSpecial->idSpecialFolder, FALSE))
        {
            LPITEMIDLIST pidl = ILCombine(folder, (LPITEMIDLIST)((char*)m_pPidl + pSpecial->cbOffset));
            if (pidl)
            {
                ILFree(m_pPidl);
                m_pPidl = pidl;
                TRACE("Replaced pidl base with CSIDL %u up to %ub.\n", pSpecial->idSpecialFolder, pSpecial->cbOffset);
            }
            ILFree(folder);
        }
    }
 
    if (TRACE_ON(shell))
    {
#if (NTDDI_VERSION < NTDDI_LONGHORN)
        if (m_Header.dwFlags & SLDF_HAS_LOGO3ID)
        {
            hr = GetAdvertiseInfo(&sProduct, EXP_LOGO3_ID_SIG);
            if (SUCCEEDED(hr))
                TRACE("Product      -> %s\n", debugstr_w(sProduct));
        }
#endif
        if (m_Header.dwFlags & SLDF_HAS_DARWINID)
        {
            hr = GetAdvertiseInfo(&sComponent, EXP_DARWIN_ID_SIG);
            if (SUCCEEDED(hr))
                TRACE("Component    -> %s\n", debugstr_w(sComponent));
        }
    }
 
    if (m_Header.dwFlags & SLDF_RUNAS_USER)
        m_bRunAs = TRUE;
    else
        m_bRunAs = FALSE;
 
    TRACE("OK\n");
 
    pdump(m_pPidl);
 
    return S_OK;
}
 
/************************************************************************
 * Stream_WriteString
 *
 * Helper function for IPersistStream_Save. Writes a unicode string
 *  with terminating nul byte to a stream, preceded by the its length.
 */
static HRESULT Stream_WriteString(IStream* stm, LPCWSTR str)
{
    SIZE_T length;
    USHORT len;
    DWORD count;
 
    length = wcslen(str) + 1;
    if (length > MAXUSHORT)
    {
        return E_INVALIDARG;
    }
 
    len = (USHORT)length;
    HRESULT hr = stm->Write(&len, sizeof(len), &count);
    if (FAILED(hr))
        return hr;
 
    length *= sizeof(WCHAR);
 
    hr = stm->Write(str, (ULONG)length, &count);
    if (FAILED(hr))
        return hr;
 
    return S_OK;
}
 
/************************************************************************
 * Stream_WriteLocationInfo
 *
 * Writes the location info to a stream
 *
 * FIXME: One day we might want to write the network volume information
 *        and the final path.
 *        Figure out how Windows deals with unicode paths here.
 */
static HRESULT Stream_WriteLocationInfo(IStream* stm, LPCWSTR path,
        CShellLink::volume_info *volume) // FIXME: Write Unicode strings
{
    LOCAL_VOLUME_INFO *vol;
    LOCATION_INFO *loc;
 
    TRACE("%p %s %p\n", stm, debugstr_w(path), volume);
 
    /* figure out the size of everything */
    DWORD label_size = WideCharToMultiByte(CP_ACP, 0, volume->label, -1,
                                      NULL, 0, NULL, NULL);
    DWORD path_size = WideCharToMultiByte(CP_ACP, 0, path, -1,
                                     NULL, 0, NULL, NULL);
    DWORD volume_info_size = sizeof(*vol) + label_size;
    DWORD final_path_size = 1;
    DWORD total_size = sizeof(*loc) + volume_info_size + path_size + final_path_size;
 
    /* create pointers to everything */
    loc = static_cast<LOCATION_INFO *>(HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, total_size));
    vol = (LOCAL_VOLUME_INFO*) &loc[1];
    LPSTR szLabel = (LPSTR) &vol[1];
    LPSTR szPath = &szLabel[label_size];
    LPSTR szFinalPath = &szPath[path_size];
 
    /* fill in the location information header */
    loc->dwTotalSize = total_size;
    loc->dwHeaderSize = sizeof(*loc);
    loc->dwFlags = 1;
    loc->dwVolTableOfs = sizeof(*loc);
    loc->dwLocalPathOfs = sizeof(*loc) + volume_info_size;
    loc->dwNetworkVolTableOfs = 0;
    loc->dwFinalPathOfs = sizeof(*loc) + volume_info_size + path_size;
 
    /* fill in the volume information */
    vol->dwSize = volume_info_size;
    vol->dwType = volume->type;
    vol->dwVolSerial = volume->serial;
    vol->dwVolLabelOfs = sizeof(*vol);
 
    /* copy in the strings */
    WideCharToMultiByte(CP_ACP, 0, volume->label, -1,
                         szLabel, label_size, NULL, NULL);
    WideCharToMultiByte(CP_ACP, 0, path, -1,
                         szPath, path_size, NULL, NULL);
    *szFinalPath = 0;
 
    ULONG count = 0;
    HRESULT hr = stm->Write(loc, total_size, &count);
    HeapFree(GetProcessHeap(), 0, loc);
 
    return hr;
}
 
/************************************************************************
 * IPersistStream_Save (IPersistStream)
 *
 * FIXME: makes assumptions about byte order
 */
HRESULT STDMETHODCALLTYPE CShellLink::Save(IStream *stm, BOOL fClearDirty)
{
    TRACE("%p %p %x\n", this, stm, fClearDirty);
 
    m_Header.dwSize = sizeof(m_Header);
    m_Header.clsid = CLSID_ShellLink;
    m_Header.dwReserved3 = m_Header.dwReserved2 = m_Header.wReserved1 = 0;
 
    /* Store target attributes */
    WIN32_FIND_DATAW wfd = {};
    WCHAR FsTarget[MAX_PATH];
    if (GetPath(FsTarget, _countof(FsTarget), NULL, 0) == S_OK && PathFileExistsW(FsTarget))
    {
        HANDLE hFind = FindFirstFileW(FsTarget, &wfd);
        if (hFind != INVALID_HANDLE_VALUE)
            FindClose(hFind);
    }
    m_Header.dwFileAttributes = wfd.dwFileAttributes;
    m_Header.ftCreationTime = wfd.ftCreationTime;
    m_Header.ftLastAccessTime = wfd.ftLastAccessTime;
    m_Header.ftLastWriteTime = wfd.ftLastWriteTime;
    m_Header.nFileSizeLow = wfd.nFileSizeLow;
 
    /*
     * Reset the flags: keep only the flags related to data blocks as they were
     * already set in accordance by the different mutator member functions.
     * The other flags will be determined now by the presence or absence of data.
     */
    UINT NT6SimpleFlags = LOBYTE(GetVersion()) > 6 ? (0x00040000 | 0x00400000 | 0x00800000 | 0x02000000) : 0;
    m_Header.dwFlags &= (SLDF_RUN_WITH_SHIMLAYER | SLDF_RUNAS_USER | SLDF_RUN_IN_SEPARATE |
                         SLDF_HAS_DARWINID | SLDF_FORCE_NO_LINKINFO | NT6SimpleFlags |
#if (NTDDI_VERSION < NTDDI_LONGHORN)
                         SLDF_HAS_LOGO3ID |
#endif
                         SLDF_HAS_EXP_ICON_SZ | SLDF_HAS_EXP_SZ);
    // TODO: When we will support Vista+ functionality, add other flags to this list.
 
    /* The stored strings are in UNICODE */
    m_Header.dwFlags |= SLDF_UNICODE;
 
    if (m_pPidl)
        m_Header.dwFlags |= SLDF_HAS_ID_LIST;
    if (m_sPath && *m_sPath && !(m_Header.dwFlags & SLDF_FORCE_NO_LINKINFO))
        m_Header.dwFlags |= SLDF_HAS_LINK_INFO;
    if (m_sDescription && *m_sDescription)
        m_Header.dwFlags |= SLDF_HAS_NAME;
    if (m_sPathRel && *m_sPathRel)
        m_Header.dwFlags |= SLDF_HAS_RELPATH;
    if (m_sWorkDir && *m_sWorkDir)
        m_Header.dwFlags |= SLDF_HAS_WORKINGDIR;
    if (m_sArgs && *m_sArgs)
        m_Header.dwFlags |= SLDF_HAS_ARGS;
    if (m_sIcoPath && *m_sIcoPath)
        m_Header.dwFlags |= SLDF_HAS_ICONLOCATION;
    if (m_bRunAs)
        m_Header.dwFlags |= SLDF_RUNAS_USER;
 
    /* Write the shortcut header */
    ULONG count;
    HRESULT hr = stm->Write(&m_Header, sizeof(m_Header), &count);
    if (FAILED(hr))
    {
        ERR("Write failed\n");
        return hr;
    }
 
    /* Save the data in order */
 
    if (m_pPidl)
    {
        hr = ILSaveToStream(stm, m_pPidl);
        if (FAILED(hr))
        {
            ERR("Failed to write PIDL\n");
            return hr;
        }
    }
 
    if (m_Header.dwFlags & SLDF_HAS_LINK_INFO)
    {
        hr = Stream_WriteLocationInfo(stm, m_sPath, &volume);
        if (FAILED(hr))
            return hr;
    }
 
    if (m_Header.dwFlags & SLDF_HAS_NAME)
    {
        hr = Stream_WriteString(stm, m_sDescription);
        if (FAILED(hr))
            return hr;
    }
 
    if (m_Header.dwFlags & SLDF_HAS_RELPATH)
    {
        hr = Stream_WriteString(stm, m_sPathRel);
        if (FAILED(hr))
            return hr;
    }
 
    if (m_Header.dwFlags & SLDF_HAS_WORKINGDIR)
    {
        hr = Stream_WriteString(stm, m_sWorkDir);
        if (FAILED(hr))
            return hr;
    }
 
    if (m_Header.dwFlags & SLDF_HAS_ARGS)
    {
        hr = Stream_WriteString(stm, m_sArgs);
        if (FAILED(hr))
            return hr;
    }
 
    if (m_Header.dwFlags & SLDF_HAS_ICONLOCATION)
    {
        hr = Stream_WriteString(stm, m_sIcoPath);
        if (FAILED(hr))
            return hr;
    }
 
    /*
     * Now save the data block list.
     *
     * NOTE that both advertised Product and Component are already saved
     * inside Logo3 and Darwin data blocks in the m_pDBList list, and the
     * m_Header.dwFlags is suitably initialized.
     */
    hr = SHWriteDataBlockList(stm, m_pDBList);
    if (FAILED(hr))
        return hr;
 
    /* Clear the dirty bit if requested */
    if (fClearDirty)
        m_bDirty = FALSE;
 
    return hr;
}
 
/************************************************************************
 * IPersistStream_GetSizeMax (IPersistStream)
 */
HRESULT STDMETHODCALLTYPE CShellLink::GetSizeMax(ULARGE_INTEGER *pcbSize)
{
    TRACE("(%p)\n", this);
    return E_NOTIMPL;
}
 
static BOOL SHELL_ExistsFileW(LPCWSTR path)
{
    if (INVALID_FILE_ATTRIBUTES == GetFileAttributesW(path))
        return FALSE;
 
    return TRUE;
}
 
/**************************************************************************
 *  ShellLink_UpdatePath
 *    update absolute path in sPath using relative path in sPathRel
 */
static HRESULT ShellLink_UpdatePath(LPCWSTR sPathRel, LPCWSTR path, LPCWSTR sWorkDir, LPWSTR* psPath)
{
    if (!path || !psPath)
        return E_INVALIDARG;
 
    if (!*psPath && sPathRel)
    {
        WCHAR buffer[2*MAX_PATH], abs_path[2*MAX_PATH];
        LPWSTR final = NULL;
 
        /* first try if [directory of link file] + [relative path] finds an existing file */
 
        GetFullPathNameW(path, MAX_PATH * 2, buffer, &final);
        if (!final)
            final = buffer;
        wcscpy(final, sPathRel);
 
        *abs_path = '\0';
 
        if (SHELL_ExistsFileW(buffer))
        {
            if (!GetFullPathNameW(buffer, MAX_PATH, abs_path, &final))
                wcscpy(abs_path, buffer);
        }
        else
        {
            /* try if [working directory] + [relative path] finds an existing file */
            if (sWorkDir)
            {
                wcscpy(buffer, sWorkDir);
                wcscpy(PathAddBackslashW(buffer), sPathRel);
 
                if (SHELL_ExistsFileW(buffer))
                    if (!GetFullPathNameW(buffer, MAX_PATH, abs_path, &final))
                        wcscpy(abs_path, buffer);
            }
        }
 
        /* FIXME: This is even not enough - not all shell links can be resolved using this algorithm. */
        if (!*abs_path)
            wcscpy(abs_path, sPathRel);
 
        *psPath = strdupW(abs_path);
        if (!*psPath)
            return E_OUTOFMEMORY;
    }
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetPath(LPSTR pszFile, INT cchMaxPath, WIN32_FIND_DATAA *pfd, DWORD fFlags)
{
    HRESULT hr;
    LPWSTR pszFileW;
    WIN32_FIND_DATAW wfd;
 
    TRACE("(%p)->(pfile=%p len=%u find_data=%p flags=%u)(%s)\n",
          this, pszFile, cchMaxPath, pfd, fFlags, debugstr_w(m_sPath));
 
    /* Allocate a temporary UNICODE buffer */
    pszFileW = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, max(cchMaxPath, MAX_PATH) * sizeof(WCHAR));
    if (!pszFileW)
        return E_OUTOFMEMORY;
 
    /* Call the UNICODE function */
    hr = GetPath(pszFileW, cchMaxPath, &wfd, fFlags);
 
    /* Convert the file path back to ANSI */
    WideCharToMultiByte(CP_ACP, 0, pszFileW, -1,
                        pszFile, cchMaxPath, NULL, NULL);
 
    /* Free the temporary buffer */
    HeapFree(GetProcessHeap(), 0, pszFileW);
 
    if (pfd)
    {
        ZeroMemory(pfd, sizeof(*pfd));
 
        /* Copy the file data if a file path was returned */
        if (*pszFile)
        {
            DWORD len;
 
            /* Copy the fixed part */
            CopyMemory(pfd, &wfd, FIELD_OFFSET(WIN32_FIND_DATAA, cFileName));
 
            /* Convert the file names to ANSI */
            len = lstrlenW(wfd.cFileName);
            WideCharToMultiByte(CP_ACP, 0, wfd.cFileName, len + 1,
                                pfd->cFileName, sizeof(pfd->cFileName), NULL, NULL);
            len = lstrlenW(wfd.cAlternateFileName);
            WideCharToMultiByte(CP_ACP, 0, wfd.cAlternateFileName, len + 1,
                                pfd->cAlternateFileName, sizeof(pfd->cAlternateFileName), NULL, NULL);
        }
    }
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetIDList(PIDLIST_ABSOLUTE *ppidl)
{
    TRACE("(%p)->(ppidl=%p)\n", this, ppidl);
 
    if (!m_pPidl)
    {
        *ppidl = NULL;
        return S_FALSE;
    }
 
    *ppidl = ILClone(m_pPidl);
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetIDList(PCIDLIST_ABSOLUTE pidl)
{
    TRACE("(%p)->(pidl=%p)\n", this, pidl);
    return SetTargetFromPIDLOrPath(pidl, NULL);
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetDescription(LPSTR pszName, INT cchMaxName)
{
    TRACE("(%p)->(%p len=%u)\n", this, pszName, cchMaxName);
 
    if (cchMaxName)
        *pszName = 0;
 
    if (m_sDescription)
        WideCharToMultiByte(CP_ACP, 0, m_sDescription, -1,
                             pszName, cchMaxName, NULL, NULL);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetDescription(LPCSTR pszName)
{
    TRACE("(%p)->(pName=%s)\n", this, pszName);
 
    HeapFree(GetProcessHeap(), 0, m_sDescription);
    m_sDescription = NULL;
 
    if (pszName)
    {
        m_sDescription = HEAP_strdupAtoW(GetProcessHeap(), 0, pszName);
        if (!m_sDescription)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetWorkingDirectory(LPSTR pszDir, INT cchMaxPath)
{
    TRACE("(%p)->(%p len=%u)\n", this, pszDir, cchMaxPath);
 
    if (cchMaxPath)
        *pszDir = 0;
 
    if (m_sWorkDir)
        WideCharToMultiByte(CP_ACP, 0, m_sWorkDir, -1,
                             pszDir, cchMaxPath, NULL, NULL);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetWorkingDirectory(LPCSTR pszDir)
{
    TRACE("(%p)->(dir=%s)\n", this, pszDir);
 
    HeapFree(GetProcessHeap(), 0, m_sWorkDir);
    m_sWorkDir = NULL;
 
    if (pszDir)
    {
        m_sWorkDir = HEAP_strdupAtoW(GetProcessHeap(), 0, pszDir);
        if (!m_sWorkDir)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetArguments(LPSTR pszArgs, INT cchMaxPath)
{
    TRACE("(%p)->(%p len=%u)\n", this, pszArgs, cchMaxPath);
 
    if (cchMaxPath)
        *pszArgs = 0;
 
    if (m_sArgs)
        WideCharToMultiByte(CP_ACP, 0, m_sArgs, -1,
                             pszArgs, cchMaxPath, NULL, NULL);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetArguments(LPCSTR pszArgs)
{
    TRACE("(%p)->(args=%s)\n", this, pszArgs);
 
    HeapFree(GetProcessHeap(), 0, m_sArgs);
    m_sArgs = NULL;
 
    if (pszArgs)
    {
        m_sArgs = HEAP_strdupAtoW(GetProcessHeap(), 0, pszArgs);
        if (!m_sArgs)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetHotkey(WORD *pwHotkey)
{
    TRACE("(%p)->(%p)(0x%08x)\n", this, pwHotkey, m_Header.wHotKey);
    *pwHotkey = m_Header.wHotKey;
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetHotkey(WORD wHotkey)
{
    TRACE("(%p)->(hotkey=%x)\n", this, wHotkey);
 
    m_Header.wHotKey = wHotkey;
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetShowCmd(INT *piShowCmd)
{
    TRACE("(%p)->(%p) %d\n", this, piShowCmd, m_Header.nShowCommand);
    *piShowCmd = m_Header.nShowCommand;
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetShowCmd(INT iShowCmd)
{
    TRACE("(%p) %d\n", this, iShowCmd);
 
    m_Header.nShowCommand = iShowCmd;
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetIconLocation(LPSTR pszIconPath, INT cchIconPath, INT *piIcon)
{
    HRESULT hr;
    LPWSTR pszIconPathW;
 
    TRACE("(%p)->(%p len=%u iicon=%p)\n", this, pszIconPath, cchIconPath, piIcon);
 
    /* Allocate a temporary UNICODE buffer */
    pszIconPathW = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, cchIconPath * sizeof(WCHAR));
    if (!pszIconPathW)
        return E_OUTOFMEMORY;
 
    /* Call the UNICODE function */
    hr = GetIconLocation(pszIconPathW, cchIconPath, piIcon);
 
    /* Convert the file path back to ANSI */
    WideCharToMultiByte(CP_ACP, 0, pszIconPathW, -1,
                        pszIconPath, cchIconPath, NULL, NULL);
 
    /* Free the temporary buffer */
    HeapFree(GetProcessHeap(), 0, pszIconPathW);
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetIconLocation(UINT uFlags, PSTR pszIconFile, UINT cchMax, int *piIndex, UINT *pwFlags)
{
    HRESULT hr;
    LPWSTR pszIconFileW;
 
    TRACE("(%p)->(%u %p len=%u piIndex=%p pwFlags=%p)\n", this, uFlags, pszIconFile, cchMax, piIndex, pwFlags);
 
    /* Allocate a temporary UNICODE buffer */
    pszIconFileW = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, cchMax * sizeof(WCHAR));
    if (!pszIconFileW)
        return E_OUTOFMEMORY;
 
    /* Call the UNICODE function */
    hr = GetIconLocation(uFlags, pszIconFileW, cchMax, piIndex, pwFlags);
 
    /* Convert the file path back to ANSI */
    WideCharToMultiByte(CP_ACP, 0, pszIconFileW, -1,
                        pszIconFile, cchMax, NULL, NULL);
 
    /* Free the temporary buffer */
    HeapFree(GetProcessHeap(), 0, pszIconFileW);
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::Extract(PCSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize)
{
    TRACE("(%p)->(path=%s iicon=%u)\n", this, pszFile, nIconIndex);
 
    LPWSTR str = NULL;
    if (pszFile)
    {
        str = HEAP_strdupAtoW(GetProcessHeap(), 0, pszFile);
        if (!str)
            return E_OUTOFMEMORY;
    }
 
    HRESULT hr = Extract(str, nIconIndex, phiconLarge, phiconSmall, nIconSize);
 
    if (str)
        HeapFree(GetProcessHeap(), 0, str);
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetIconLocation(LPCSTR pszIconPath, INT iIcon)
{
    TRACE("(%p)->(path=%s iicon=%d)\n", this, pszIconPath, iIcon);
 
    LPWSTR str = NULL;
    if (pszIconPath)
    {
        str = HEAP_strdupAtoW(GetProcessHeap(), 0, pszIconPath);
        if (!str)
            return E_OUTOFMEMORY;
    }
 
    HRESULT hr = SetIconLocation(str, iIcon);
 
    if (str)
        HeapFree(GetProcessHeap(), 0, str);
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetRelativePath(LPCSTR pszPathRel, DWORD dwReserved)
{
    TRACE("(%p)->(path=%s %x)\n", this, pszPathRel, dwReserved);
 
    HeapFree(GetProcessHeap(), 0, m_sPathRel);
    m_sPathRel = NULL;
 
    if (pszPathRel)
    {
        m_sPathRel = HEAP_strdupAtoW(GetProcessHeap(), 0, pszPathRel);
        m_bDirty = TRUE;
    }
 
    return ShellLink_UpdatePath(m_sPathRel, m_sPath, m_sWorkDir, &m_sPath);
}
 
static LPWSTR
shelllink_get_msi_component_path(LPWSTR component)
{
    DWORD Result, sz = 0;
 
    Result = CommandLineFromMsiDescriptor(component, NULL, &sz);
    if (Result != ERROR_SUCCESS)
        return NULL;
 
    sz++;
    LPWSTR path = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, sz * sizeof(WCHAR));
    Result = CommandLineFromMsiDescriptor(component, path, &sz);
    if (Result != ERROR_SUCCESS)
    {
        HeapFree(GetProcessHeap(), 0, path);
        path = NULL;
    }
 
    TRACE("returning %s\n", debugstr_w(path));
 
    return path;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::Resolve(HWND hwnd, DWORD fFlags)
{
    HRESULT hr = S_OK;
    BOOL bSuccess;
 
    TRACE("(%p)->(hwnd=%p flags=%x)\n", this, hwnd, fFlags);
 
    /* FIXME: use IResolveShellLink interface? */
 
    // FIXME: See InvokeCommand().
 
#if (NTDDI_VERSION < NTDDI_LONGHORN)
    // NOTE: For Logo3 (EXP_LOGO3_ID_SIG), check also for SHRestricted(REST_NOLOGO3CHANNELNOTIFY)
    if (m_Header.dwFlags & SLDF_HAS_LOGO3ID)
    {
        FIXME("Logo3 links are not supported yet!\n");
        return E_FAIL;
    }
#endif
 
    /* Resolve Darwin (MSI) target */
    if (m_Header.dwFlags & SLDF_HAS_DARWINID)
    {
        LPWSTR component = NULL;
        hr = GetAdvertiseInfo(&component, EXP_DARWIN_ID_SIG);
        if (FAILED(hr))
            return E_FAIL;
 
        /* Clear the cached path */
        HeapFree(GetProcessHeap(), 0, m_sPath);
        m_sPath = shelllink_get_msi_component_path(component);
        if (!m_sPath)
            return E_FAIL;
    }
 
    if (!m_sPath && m_pPidl)
    {
        WCHAR buffer[MAX_PATH];
 
        bSuccess = SHGetPathFromIDListW(m_pPidl, buffer);
        if (bSuccess && *buffer)
        {
            m_sPath = strdupW(buffer);
            if (!m_sPath)
                return E_OUTOFMEMORY;
 
            m_bDirty = TRUE;
        }
        else
        {
            hr = S_OK;    /* don't report an error occurred while just caching information */
        }
    }
 
    // FIXME: Strange to do that here...
    if (!m_sIcoPath && m_sPath)
    {
        m_sIcoPath = strdupW(m_sPath);
        if (!m_sIcoPath)
            return E_OUTOFMEMORY;
 
        m_Header.nIconIndex = 0;
        m_bDirty = TRUE;
    }
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetPath(LPCSTR pszFile)
{
    TRACE("(%p)->(path=%s)\n", this, pszFile);
 
    if (!pszFile)
        return E_INVALIDARG;
 
    LPWSTR str = HEAP_strdupAtoW(GetProcessHeap(), 0, pszFile);
    if (!str)
        return E_OUTOFMEMORY;
 
    HRESULT hr = SetPath(str);
    HeapFree(GetProcessHeap(), 0, str);
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetPath(LPWSTR pszFile, INT cchMaxPath, WIN32_FIND_DATAW *pfd, DWORD fFlags)
{
    WCHAR buffer[MAX_PATH];
 
    TRACE("(%p)->(pfile=%p len=%u find_data=%p flags=%u)(%s)\n",
          this, pszFile, cchMaxPath, pfd, fFlags, debugstr_w(m_sPath));
 
    if (cchMaxPath)
        *pszFile = 0;
    // FIXME: What if cchMaxPath == 0 , or pszFile == NULL ??
 
    // FIXME: What about Darwin??
 
    /*
     * Retrieve the path to the target from the PIDL (if we have one).
     * NOTE: Do NOT use the cached path (m_sPath from link info).
     */
    if (m_pPidl && SHGetPathFromIDListW(m_pPidl, buffer))
    {
        if (fFlags & SLGP_SHORTPATH)
            GetShortPathNameW(buffer, buffer, _countof(buffer));
        // FIXME: Add support for SLGP_UNCPRIORITY
    }
    else
    {
        *buffer = 0;
    }
 
    /* If we have a FindData structure, initialize it */
    if (pfd)
    {
        ZeroMemory(pfd, sizeof(*pfd));
 
        /* Copy the file data if the target is a file path */
        if (*buffer)
        {
            pfd->dwFileAttributes = m_Header.dwFileAttributes;
            pfd->ftCreationTime   = m_Header.ftCreationTime;
            pfd->ftLastAccessTime = m_Header.ftLastAccessTime;
            pfd->ftLastWriteTime  = m_Header.ftLastWriteTime;
            pfd->nFileSizeHigh    = 0;
            pfd->nFileSizeLow     = m_Header.nFileSizeLow;
 
            /*
             * Build temporarily a short path in pfd->cFileName (of size MAX_PATH),
             * then extract and store the short file name in pfd->cAlternateFileName.
             */
            GetShortPathNameW(buffer, pfd->cFileName, _countof(pfd->cFileName));
            lstrcpynW(pfd->cAlternateFileName,
                      PathFindFileNameW(pfd->cFileName),
                      _countof(pfd->cAlternateFileName));
 
            /* Now extract and store the long file name in pfd->cFileName */
            lstrcpynW(pfd->cFileName,
                      PathFindFileNameW(buffer),
                      _countof(pfd->cFileName));
        }
    }
 
    /* Finally check if we have a raw path the user actually wants to retrieve */
    if ((fFlags & SLGP_RAWPATH) && (m_Header.dwFlags & SLDF_HAS_EXP_SZ))
    {
        /* Search for a target environment block */
        LPEXP_SZ_LINK pInfo;
        pInfo = (LPEXP_SZ_LINK)SHFindDataBlock(m_pDBList, EXP_SZ_LINK_SIG);
        if (pInfo && (pInfo->cbSize == sizeof(*pInfo)))
            lstrcpynW(buffer, pInfo->szwTarget, cchMaxPath);
    }
 
    /* For diagnostics purposes only... */
    // NOTE: SLGP_UNCPRIORITY is unsupported
    fFlags &= ~(SLGP_RAWPATH | SLGP_SHORTPATH);
    if (fFlags) FIXME("(%p): Unsupported flags %lu\n", this, fFlags);
 
    /* Copy the data back to the user */
    if (*buffer)
        lstrcpynW(pszFile, buffer, cchMaxPath);
 
    return (*buffer ? S_OK : S_FALSE);
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetDescription(LPWSTR pszName, INT cchMaxName)
{
    TRACE("(%p)->(%p len=%u)\n", this, pszName, cchMaxName);
 
    *pszName = 0;
    if (m_sDescription)
        lstrcpynW(pszName, m_sDescription, cchMaxName);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetDescription(LPCWSTR pszName)
{
    TRACE("(%p)->(desc=%s)\n", this, debugstr_w(pszName));
 
    HeapFree(GetProcessHeap(), 0, m_sDescription);
    m_sDescription = NULL;
 
    if (pszName)
    {
        m_sDescription = strdupW(pszName);
        if (!m_sDescription)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetWorkingDirectory(LPWSTR pszDir, INT cchMaxPath)
{
    TRACE("(%p)->(%p len %u)\n", this, pszDir, cchMaxPath);
 
    if (cchMaxPath)
        *pszDir = 0;
 
    if (m_sWorkDir)
        lstrcpynW(pszDir, m_sWorkDir, cchMaxPath);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetWorkingDirectory(LPCWSTR pszDir)
{
    TRACE("(%p)->(dir=%s)\n", this, debugstr_w(pszDir));
 
    HeapFree(GetProcessHeap(), 0, m_sWorkDir);
    m_sWorkDir = NULL;
 
    if (pszDir)
    {
        m_sWorkDir = strdupW(pszDir);
        if (!m_sWorkDir)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetArguments(LPWSTR pszArgs, INT cchMaxPath)
{
    TRACE("(%p)->(%p len=%u)\n", this, pszArgs, cchMaxPath);
 
    if (cchMaxPath)
        *pszArgs = 0;
 
    if (m_sArgs)
        lstrcpynW(pszArgs, m_sArgs, cchMaxPath);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetArguments(LPCWSTR pszArgs)
{
    TRACE("(%p)->(args=%s)\n", this, debugstr_w(pszArgs));
 
    HeapFree(GetProcessHeap(), 0, m_sArgs);
    m_sArgs = NULL;
 
    if (pszArgs)
    {
        m_sArgs = strdupW(pszArgs);
        if (!m_sArgs)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetIconLocation(LPWSTR pszIconPath, INT cchIconPath, INT *piIcon)
{
    TRACE("(%p)->(%p len=%u iicon=%p)\n", this, pszIconPath, cchIconPath, piIcon);
 
    if (cchIconPath)
        *pszIconPath = 0;
 
    *piIcon = 0;
 
    /* Update the original icon path location */
    if (m_Header.dwFlags & SLDF_HAS_EXP_ICON_SZ)
    {
        WCHAR szPath[MAX_PATH];
 
        /* Search for an icon environment block */
        LPEXP_SZ_LINK pInfo;
        pInfo = (LPEXP_SZ_LINK)SHFindDataBlock(m_pDBList, EXP_SZ_ICON_SIG);
        if (pInfo && (pInfo->cbSize == sizeof(*pInfo)))
        {
            SHExpandEnvironmentStringsW(pInfo->szwTarget, szPath, _countof(szPath));
 
            m_Header.dwFlags &= ~SLDF_HAS_ICONLOCATION;
            HeapFree(GetProcessHeap(), 0, m_sIcoPath);
 
            m_sIcoPath = strdupW(szPath);
            if (!m_sIcoPath)
                return E_OUTOFMEMORY;
 
            m_Header.dwFlags |= SLDF_HAS_ICONLOCATION;
 
            m_bDirty = TRUE;
        }
    }
 
    *piIcon = m_Header.nIconIndex;
 
    if (m_sIcoPath)
        lstrcpynW(pszIconPath, m_sIcoPath, cchIconPath);
 
    return S_OK;
}
 
static HRESULT SHELL_PidlGetIconLocationW(PCIDLIST_ABSOLUTE pidl,
        UINT uFlags, PWSTR pszIconFile, UINT cchMax, int *piIndex, UINT *pwFlags)
{
    CComPtr<IExtractIconW> pei;
    HRESULT hr = SHELL_GetUIObjectOfAbsoluteItem(NULL, pidl, IID_PPV_ARG(IExtractIconW, &pei));
    if (FAILED_UNEXPECTEDLY(hr))
        return hr;
    hr = pei->GetIconLocation(uFlags, pszIconFile, cchMax, piIndex, pwFlags);
    if (FAILED_UNEXPECTEDLY(hr))
        return hr;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetIconLocation(UINT uFlags, PWSTR pszIconFile, UINT cchMax, int *piIndex, UINT *pwFlags)
{
    HRESULT hr;
 
    pszIconFile[0] = UNICODE_NULL;
 
    /*
     * It is possible for a shell link to point to another shell link,
     * and in particular there is the possibility to point to itself.
     * Now, suppose we ask such a link to retrieve its associated icon.
     * This function would be called, and due to COM would be called again
     * recursively. To solve this issue, we forbid calling GetIconLocation()
     * with GIL_FORSHORTCUT set in uFlags, as done by Windows (shown by tests).
     */
    if (uFlags & GIL_FORSHORTCUT)
        return E_INVALIDARG;
 
    /*
     * Now, we set GIL_FORSHORTCUT so that: i) we allow the icon extractor
     * of the target to give us a suited icon, and ii) we protect ourselves
     * against recursive call.
     */
    uFlags |= GIL_FORSHORTCUT;
 
    if (uFlags & GIL_DEFAULTICON)
        return S_FALSE;
 
    hr = GetIconLocation(pszIconFile, cchMax, piIndex);
    if (FAILED(hr) || pszIconFile[0] == UNICODE_NULL)
    {
        hr = SHELL_PidlGetIconLocationW(m_pPidl, uFlags, pszIconFile, cchMax, piIndex, pwFlags);
    }
    else
    {
        // TODO: If GetIconLocation succeeded, why are we setting GIL_NOTFILENAME? And are we not PERINSTANCE?
        *pwFlags = GIL_NOTFILENAME | GIL_PERCLASS;
    }
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE
CShellLink::Extract(PCWSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize)
{
    HRESULT hr = NOERROR;
    UINT cxyLarge = LOWORD(nIconSize), cxySmall = HIWORD(nIconSize);
 
    if (phiconLarge)
    {
        *phiconLarge = NULL;
        PrivateExtractIconsW(pszFile, nIconIndex, cxyLarge, cxyLarge, phiconLarge, NULL, 1, 0);
 
        if (*phiconLarge == NULL)
            hr = S_FALSE;
    }
 
    if (phiconSmall)
    {
        *phiconSmall = NULL;
        PrivateExtractIconsW(pszFile, nIconIndex, cxySmall, cxySmall, phiconSmall, NULL, 1, 0);
 
        if (*phiconSmall == NULL)
            hr = S_FALSE;
    }
 
    if (hr == S_FALSE)
    {
        if (phiconLarge && *phiconLarge)
        {
            DestroyIcon(*phiconLarge);
            *phiconLarge = NULL;
        }
        if (phiconSmall && *phiconSmall)
        {
            DestroyIcon(*phiconSmall);
            *phiconSmall = NULL;
        }
    }
 
    return hr;
}
 
#if 0
/* Extends the functionality of PathUnExpandEnvStringsW */
BOOL PathFullyUnExpandEnvStringsW(
    _In_  LPCWSTR pszPath,
    _Out_ LPWSTR  pszBuf,
    _In_  UINT    cchBuf)
{
    BOOL Ret = FALSE; // Set to TRUE as soon as PathUnExpandEnvStrings starts unexpanding.
    BOOL res;
    LPCWSTR p;
 
    // *pszBuf = L'\0';
    while (*pszPath && cchBuf > 0)
    {
        /* Attempt unexpanding the path */
        res = PathUnExpandEnvStringsW(pszPath, pszBuf, cchBuf);
        if (!res)
        {
            /* The unexpansion failed. Try to find a path delimiter. */
            p = wcspbrk(pszPath, L" /\\:*?\"<>|%");
            if (!p) /* None found, we will copy the remaining path */
                p = pszPath + wcslen(pszPath);
            else    /* Found one, we will copy the delimiter and skip it */
                ++p;
            /* If we overflow, we cannot unexpand more, so return FALSE */
            if (p - pszPath >= cchBuf)
                return FALSE; // *pszBuf = L'\0';
 
            /* Copy the untouched portion of path up to the delimiter, included */
            wcsncpy(pszBuf, pszPath, p - pszPath);
            pszBuf[p - pszPath] = L'\0'; // NULL-terminate
 
            /* Advance the pointers and decrease the remaining buffer size */
            cchBuf -= (p - pszPath);
            pszBuf += (p - pszPath);
            pszPath += (p - pszPath);
        }
        else
        {
            /*
             * The unexpansion succeeded. Skip the unexpanded part by trying
             * to find where the original path and the unexpanded string
             * become different.
             * NOTE: An alternative(?) would be to stop also at the last
             * path delimiter encountered in the loop (i.e. would be the
             * first path delimiter in the strings).
             */
            LPWSTR q;
 
            /*
             * The algorithm starts at the end of the strings and loops back
             * while the characters are equal, until it finds a discrepancy.
             */
            p = pszPath + wcslen(pszPath);
            q = pszBuf + wcslen(pszBuf); // This wcslen should be < cchBuf
            while ((*p == *q) && (p > pszPath) && (q > pszBuf))
            {
                --p; --q;
            }
            /* Skip discrepancy */
            ++p; ++q;
 
            /* Advance the pointers and decrease the remaining buffer size */
            cchBuf -= (q - pszBuf);
            pszBuf = q;
            pszPath = p;
 
            Ret = TRUE;
        }
    }
 
    return Ret;
}
#endif
 
HRESULT STDMETHODCALLTYPE CShellLink::SetIconLocation(LPCWSTR pszIconPath, INT iIcon)
{
    HRESULT hr = E_FAIL;
    WCHAR szIconPath[MAX_PATH];
 
    TRACE("(%p)->(path=%s iicon=%d)\n", this, debugstr_w(pszIconPath), iIcon);
 
    if (pszIconPath)
    {
        /*
         * Check whether the user-given file path contains unexpanded
         * environment variables. If so, create a target environment block.
         * Note that in this block we will store the user-given path.
         * It will contain the unexpanded environment variables, but
         * it can also contain already expanded path that the user does
         * not want to see them unexpanded (e.g. so that they always
         * refer to the same place even if the would-be corresponding
         * environment variable could change).
         */
#ifdef ICON_LINK_WINDOWS_COMPAT
        /* Try to fully unexpand the icon path */
        // if (PathFullyUnExpandEnvStringsW(pszIconPath, szIconPath, _countof(szIconPath)))
        BOOL bSuccess = PathUnExpandEnvStringsW(pszIconPath, szIconPath, _countof(szIconPath));
        if (bSuccess && wcscmp(pszIconPath, szIconPath) != 0)
#else
        /*
         * In some situations, described in http://stackoverflow.com/questions/2976489/ishelllinkseticonlocation-translates-my-icon-path-into-program-files-which-i
         * the result of PathUnExpandEnvStringsW() could be wrong, and instead
         * one would have to store the actual provided icon location path, while
         * creating an icon environment block ONLY if that path already contains
         * environment variables. This is what the present case is trying to implement.
         */
        SHExpandEnvironmentStringsW(pszIconPath, szIconPath, _countof(szIconPath));
        if (wcscmp(pszIconPath, szIconPath) != 0)
#endif
        {
            /*
             * The user-given file path contains unexpanded environment
             * variables, so we need an icon environment block.
             */
            EXP_SZ_LINK buffer;
            LPEXP_SZ_LINK pInfo;
 
#ifdef ICON_LINK_WINDOWS_COMPAT
            /* Make pszIconPath point to the unexpanded path */
            LPCWSTR pszOrgIconPath = pszIconPath;
            pszIconPath = szIconPath;
#endif
            pInfo = (LPEXP_SZ_LINK)SHFindDataBlock(m_pDBList, EXP_SZ_ICON_SIG);
            if (pInfo)
            {
                /* Make sure that the size of the structure is valid */
                if (pInfo->cbSize != sizeof(*pInfo))
                {
                    ERR("Ooops. This structure is not as expected...\n");
 
                    /* Invalid structure, remove it altogether */
                    m_Header.dwFlags &= ~SLDF_HAS_EXP_ICON_SZ;
                    RemoveDataBlock(EXP_SZ_ICON_SIG);
 
                    /* Reset the pointer and go use the static buffer */
                    pInfo = NULL;
                }
            }
            if (!pInfo)
            {
                /* Use the static buffer */
                pInfo = &buffer;
                buffer.cbSize = sizeof(buffer);
                buffer.dwSignature = EXP_SZ_ICON_SIG;
            }
 
            lstrcpynW(pInfo->szwTarget, pszIconPath, _countof(pInfo->szwTarget));
            WideCharToMultiByte(CP_ACP, 0, pszIconPath, -1,
                                pInfo->szTarget, _countof(pInfo->szTarget), NULL, NULL);
 
            hr = S_OK;
            if (pInfo == &buffer)
                hr = AddDataBlock(pInfo);
            if (hr == S_OK)
                m_Header.dwFlags |= SLDF_HAS_EXP_ICON_SZ;
 
#ifdef ICON_LINK_WINDOWS_COMPAT
            /* Set pszIconPath back to the original one */
            pszIconPath = pszOrgIconPath;
#else
            /* Now, make pszIconPath point to the expanded path */
            pszIconPath = szIconPath;
#endif
        }
        else
        {
            /*
             * The user-given file path does not contain unexpanded environment
             * variables, so we need to remove any icon environment block.
             */
            m_Header.dwFlags &= ~SLDF_HAS_EXP_ICON_SZ;
            RemoveDataBlock(EXP_SZ_ICON_SIG);
 
            /* pszIconPath points to the user path */
        }
    }
 
#ifdef ICON_LINK_WINDOWS_COMPAT
    /* Store the original icon path location (may contain unexpanded environment strings) */
#endif
    if (pszIconPath)
    {
        m_Header.dwFlags &= ~SLDF_HAS_ICONLOCATION;
        HeapFree(GetProcessHeap(), 0, m_sIcoPath);
 
        m_sIcoPath = strdupW(pszIconPath);
        if (!m_sIcoPath)
            return E_OUTOFMEMORY;
 
        m_Header.dwFlags |= SLDF_HAS_ICONLOCATION;
    }
 
    hr = S_OK;
 
    m_Header.nIconIndex = iIcon;
    m_bDirty = TRUE;
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetRelativePath(LPCWSTR pszPathRel, DWORD dwReserved)
{
    TRACE("(%p)->(path=%s %x)\n", this, debugstr_w(pszPathRel), dwReserved);
 
    HeapFree(GetProcessHeap(), 0, m_sPathRel);
    m_sPathRel = NULL;
 
    if (pszPathRel)
    {
        m_sPathRel = strdupW(pszPathRel);
        if (!m_sPathRel)
            return E_OUTOFMEMORY;
    }
    m_bDirty = TRUE;
 
    return ShellLink_UpdatePath(m_sPathRel, m_sPath, m_sWorkDir, &m_sPath);
}
 
static LPWSTR GetAdvertisedArg(LPCWSTR str)
{
    if (!str)
        return NULL;
 
    LPCWSTR p = wcschr(str, L':');
    if (!p)
        return NULL;
 
    DWORD len = p - str;
    LPWSTR ret = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * (len + 1));
    if (!ret)
        return ret;
 
    memcpy(ret, str, sizeof(WCHAR)*len);
    ret[len] = 0;
    return ret;
}
 
HRESULT CShellLink::WriteAdvertiseInfo(LPCWSTR string, DWORD dwSig)
{
    EXP_DARWIN_LINK buffer;
    LPEXP_DARWIN_LINK pInfo;
 
    if (   (dwSig != EXP_DARWIN_ID_SIG)
#if (NTDDI_VERSION < NTDDI_LONGHORN)
        && (dwSig != EXP_LOGO3_ID_SIG)
#endif
        )
    {
        return E_INVALIDARG;
    }
 
    if (!string)
        return S_FALSE;
 
    pInfo = (LPEXP_DARWIN_LINK)SHFindDataBlock(m_pDBList, dwSig);
    if (pInfo)
    {
        /* Make sure that the size of the structure is valid */
        if (pInfo->dbh.cbSize != sizeof(*pInfo))
        {
            ERR("Ooops. This structure is not as expected...\n");
 
            /* Invalid structure, remove it altogether */
            if (dwSig == EXP_DARWIN_ID_SIG)
                m_Header.dwFlags &= ~SLDF_HAS_DARWINID;
#if (NTDDI_VERSION < NTDDI_LONGHORN)
            else if (dwSig == EXP_LOGO3_ID_SIG)
                m_Header.dwFlags &= ~SLDF_HAS_LOGO3ID;
#endif
            RemoveDataBlock(dwSig);
 
            /* Reset the pointer and go use the static buffer */
            pInfo = NULL;
        }
    }
    if (!pInfo)
    {
        /* Use the static buffer */
        pInfo = &buffer;
        buffer.dbh.cbSize = sizeof(buffer);
        buffer.dbh.dwSignature = dwSig;
    }
 
    lstrcpynW(pInfo->szwDarwinID, string, _countof(pInfo->szwDarwinID));
    WideCharToMultiByte(CP_ACP, 0, string, -1,
                        pInfo->szDarwinID, _countof(pInfo->szDarwinID), NULL, NULL);
 
    HRESULT hr = S_OK;
    if (pInfo == &buffer)
        hr = AddDataBlock(pInfo);
    if (hr == S_OK)
    {
        if (dwSig == EXP_DARWIN_ID_SIG)
            m_Header.dwFlags |= SLDF_HAS_DARWINID;
#if (NTDDI_VERSION < NTDDI_LONGHORN)
        else if (dwSig == EXP_LOGO3_ID_SIG)
            m_Header.dwFlags |= SLDF_HAS_LOGO3ID;
#endif
    }
 
    return hr;
}
 
HRESULT CShellLink::SetAdvertiseInfo(LPCWSTR str)
{
    HRESULT hr;
    LPCWSTR szComponent = NULL, szProduct = NULL, p;
    INT len;
    GUID guid;
    WCHAR szGuid[38+1];
 
    sProduct = sComponent = NULL;
 
    while (str[0])
    {
        /* each segment must start with two colons */
        if (str[0] != ':' || str[1] != ':')
            return E_FAIL;
 
        /* the last segment is just two colons */
        if (!str[2])
            break;
        str += 2;
 
        /* there must be a colon straight after a guid */
        p = wcschr(str, L':');
        if (!p)
            return E_FAIL;
        len = p - str;
        if (len != 38)
            return E_FAIL;
 
        /* get the guid, and check if it's validly formatted */
        memcpy(szGuid, str, sizeof(WCHAR)*len);
        szGuid[len] = 0;
 
        hr = CLSIDFromString(szGuid, &guid);
        if (hr != S_OK)
            return hr;
        str = p + 1;
 
        /* match it up to a guid that we care about */
        if (IsEqualGUID(guid, SHELL32_AdvtShortcutComponent) && !szComponent)
            szComponent = str; /* Darwin */
        else if (IsEqualGUID(guid, SHELL32_AdvtShortcutProduct) && !szProduct)
            szProduct = str;   /* Logo3  */
        else
            return E_FAIL;
 
        /* skip to the next field */
        str = wcschr(str, L':');
        if (!str)
            return E_FAIL;
    }
 
    /* we have to have a component for an advertised shortcut */
    if (!szComponent)
        return E_FAIL;
 
    szComponent = GetAdvertisedArg(szComponent);
    szProduct = GetAdvertisedArg(szProduct);
 
    hr = WriteAdvertiseInfo(szComponent, EXP_DARWIN_ID_SIG);
    // if (FAILED(hr))
        // return hr;
#if (NTDDI_VERSION < NTDDI_LONGHORN)
    hr = WriteAdvertiseInfo(szProduct, EXP_LOGO3_ID_SIG);
    // if (FAILED(hr))
        // return hr;
#endif
 
    HeapFree(GetProcessHeap(), 0, (PVOID)szComponent);
    HeapFree(GetProcessHeap(), 0, (PVOID)szProduct);
 
    if (TRACE_ON(shell))
    {
        GetAdvertiseInfo(&sComponent, EXP_DARWIN_ID_SIG);
        TRACE("Component = %s\n", debugstr_w(sComponent));
#if (NTDDI_VERSION < NTDDI_LONGHORN)
        GetAdvertiseInfo(&sProduct, EXP_LOGO3_ID_SIG);
        TRACE("Product = %s\n", debugstr_w(sProduct));
#endif
    }
 
    return S_OK;
}
 
HRESULT CShellLink::SetTargetFromPIDLOrPath(LPCITEMIDLIST pidl, LPCWSTR pszFile)
{
    HRESULT hr = S_OK;
    LPITEMIDLIST pidlNew = NULL;
    WCHAR szPath[MAX_PATH];
 
    /*
     * Not both 'pidl' and 'pszFile' should be set.
     * But either one or both can be NULL.
     */
    if (pidl && pszFile)
        return E_FAIL;
 
    if (pidl)
    {
        /* Clone the PIDL */
        pidlNew = ILClone(pidl);
        if (!pidlNew)
            return E_FAIL;
    }
    else if (pszFile)
    {
        /* Build a PIDL for this path target */
        hr = SHILCreateFromPathW(pszFile, &pidlNew, NULL);
        if (FAILED(hr))
        {
            /* This failed, try to resolve the path, then create a simple PIDL */
 
            StringCchCopyW(szPath, _countof(szPath), pszFile);
            PathResolveW(szPath, NULL, PRF_TRYPROGRAMEXTENSIONS);
 
            if (PathIsFileSpecW(szPath))
            {
                hr = E_INVALIDARG;
                szPath[0] = 0;
            }
            else
            {
                hr = S_OK;
                pidlNew = SHSimpleIDListFromPathW(szPath);
                // NOTE: Don't make it failed here even if pidlNew was NULL.
                // We don't fail on purpose even if SHSimpleIDListFromPathW returns NULL.
                // This behaviour has been verified with tests.
            }
        }
    }
    // else if (!pidl && !pszFile) { pidlNew = NULL; hr = S_OK; }
 
    ILFree(m_pPidl);
    m_pPidl = pidlNew;
 
    if (!pszFile)
    {
        if (SHGetPathFromIDListW(pidlNew, szPath))
            pszFile = szPath;
    }
 
    // TODO: Fully update link info, tracker, file attribs...
 
    // if (pszFile)
    if (!pszFile)
    {
        *szPath = L'\0';
        pszFile = szPath;
    }
 
    /* Update the cached path (for link info) */
    ShellLink_GetVolumeInfo(pszFile, &volume);
 
    if (m_sPath)
        HeapFree(GetProcessHeap(), 0, m_sPath);
 
    m_sPath = strdupW(pszFile);
    if (!m_sPath)
        return E_OUTOFMEMORY;
 
    m_bDirty = TRUE;
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetPath(LPCWSTR pszFile)
{
    LPWSTR unquoted = NULL;
    HRESULT hr = S_OK;
 
    TRACE("(%p)->(path=%s)\n", this, debugstr_w(pszFile));
 
    if (!pszFile)
        return E_INVALIDARG;
 
    /*
     * Allow upgrading Logo3 shortcuts (m_Header.dwFlags & SLDF_HAS_LOGO3ID),
     * but forbid upgrading Darwin ones.
     */
    if (m_Header.dwFlags & SLDF_HAS_DARWINID)
        return S_FALSE;
 
    /* quotes at the ends of the string are stripped */
    SIZE_T len = wcslen(pszFile);
    if (pszFile[0] == L'"' && pszFile[len-1] == L'"')
    {
        unquoted = strdupW(pszFile);
        PathUnquoteSpacesW(unquoted);
        pszFile = unquoted;
    }
 
    /* any other quote marks are invalid */
    if (wcschr(pszFile, L'"'))
    {
        hr = S_FALSE;
        goto end;
    }
 
    /* Clear the cached path */
    HeapFree(GetProcessHeap(), 0, m_sPath);
    m_sPath = NULL;
 
    /* Check for an advertised target (Logo3 or Darwin) */
    if (SetAdvertiseInfo(pszFile) != S_OK)
    {
        /* This is not an advertised target, but a regular path */
        WCHAR szPath[MAX_PATH];
 
        /*
         * Check whether the user-given file path contains unexpanded
         * environment variables. If so, create a target environment block.
         * Note that in this block we will store the user-given path.
         * It will contain the unexpanded environment variables, but
         * it can also contain already expanded path that the user does
         * not want to see them unexpanded (e.g. so that they always
         * refer to the same place even if the would-be corresponding
         * environment variable could change).
         */
        if (*pszFile)
            SHExpandEnvironmentStringsW(pszFile, szPath, _countof(szPath));
        else
            *szPath = L'\0';
 
        if (*pszFile && (wcscmp(pszFile, szPath) != 0))
        {
            /*
             * The user-given file path contains unexpanded environment
             * variables, so we need a target environment block.
             */
            EXP_SZ_LINK buffer;
            LPEXP_SZ_LINK pInfo;
 
            pInfo = (LPEXP_SZ_LINK)SHFindDataBlock(m_pDBList, EXP_SZ_LINK_SIG);
            if (pInfo)
            {
                /* Make sure that the size of the structure is valid */
                if (pInfo->cbSize != sizeof(*pInfo))
                {
                    ERR("Ooops. This structure is not as expected...\n");
 
                    /* Invalid structure, remove it altogether */
                    m_Header.dwFlags &= ~SLDF_HAS_EXP_SZ;
                    RemoveDataBlock(EXP_SZ_LINK_SIG);
 
                    /* Reset the pointer and go use the static buffer */
                    pInfo = NULL;
                }
            }
            if (!pInfo)
            {
                /* Use the static buffer */
                pInfo = &buffer;
                buffer.cbSize = sizeof(buffer);
                buffer.dwSignature = EXP_SZ_LINK_SIG;
            }
 
            lstrcpynW(pInfo->szwTarget, pszFile, _countof(pInfo->szwTarget));
            WideCharToMultiByte(CP_ACP, 0, pszFile, -1,
                                pInfo->szTarget, _countof(pInfo->szTarget), NULL, NULL);
 
            hr = S_OK;
            if (pInfo == &buffer)
                hr = AddDataBlock(pInfo);
            if (hr == S_OK)
                m_Header.dwFlags |= SLDF_HAS_EXP_SZ;
 
            /* Now, make pszFile point to the expanded path */
            pszFile = szPath;
        }
        else
        {
            /*
             * The user-given file path does not contain unexpanded environment
             * variables, so we need to remove any target environment block.
             */
            m_Header.dwFlags &= ~SLDF_HAS_EXP_SZ;
            RemoveDataBlock(EXP_SZ_LINK_SIG);
 
            /* pszFile points to the user path */
        }
 
        /* Set the target */
        hr = SetTargetFromPIDLOrPath(NULL, pszFile);
    }
 
    m_bDirty = TRUE;
 
end:
    HeapFree(GetProcessHeap(), 0, unquoted);
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::AddDataBlock(void* pDataBlock)
{
    if (SHAddDataBlock(&m_pDBList, (DATABLOCK_HEADER*)pDataBlock))
    {
        m_bDirty = TRUE;
        return S_OK;
    }
    return S_FALSE;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::CopyDataBlock(DWORD dwSig, void** ppDataBlock)
{
    DATABLOCK_HEADER* pBlock;
    PVOID pDataBlock;
 
    TRACE("%p %08x %p\n", this, dwSig, ppDataBlock);
 
    *ppDataBlock = NULL;
 
    pBlock = SHFindDataBlock(m_pDBList, dwSig);
    if (!pBlock)
    {
        ERR("unknown datablock %08x (not found)\n", dwSig);
        return E_FAIL;
    }
 
    pDataBlock = LocalAlloc(LMEM_ZEROINIT, pBlock->cbSize);
    if (!pDataBlock)
        return E_OUTOFMEMORY;
 
    CopyMemory(pDataBlock, pBlock, pBlock->cbSize);
 
    *ppDataBlock = pDataBlock;
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::RemoveDataBlock(DWORD dwSig)
{
    if (SHRemoveDataBlock(&m_pDBList, dwSig))
    {
        m_bDirty = TRUE;
        return S_OK;
    }
    return S_FALSE;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetFlags(DWORD *pdwFlags)
{
    TRACE("%p %p\n", this, pdwFlags);
    *pdwFlags = m_Header.dwFlags;
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetFlags(DWORD dwFlags)
{
    if (m_Header.dwFlags == dwFlags)
        return S_FALSE;
    m_Header.dwFlags = dwFlags;
    m_bDirty = TRUE;
    return S_OK;
}
 
/**************************************************************************
 * CShellLink implementation of IShellExtInit::Initialize()
 *
 * Loads the shelllink from the dataobject the shell is pointing to.
 */
HRESULT STDMETHODCALLTYPE CShellLink::Initialize(PCIDLIST_ABSOLUTE pidlFolder, IDataObject *pdtobj, HKEY hkeyProgID)
{
    TRACE("%p %p %p %p\n", this, pidlFolder, pdtobj, hkeyProgID);
 
    if (!pdtobj)
        return E_FAIL;
 
    FORMATETC format;
    format.cfFormat = CF_HDROP;
    format.ptd = NULL;
    format.dwAspect = DVASPECT_CONTENT;
    format.lindex = -1;
    format.tymed = TYMED_HGLOBAL;
 
    STGMEDIUM stgm;
    HRESULT hr = pdtobj->GetData(&format, &stgm);
    if (FAILED(hr))
        return hr;
 
    UINT count = DragQueryFileW((HDROP)stgm.hGlobal, -1, NULL, 0);
    if (count == 1)
    {
        count = DragQueryFileW((HDROP)stgm.hGlobal, 0, NULL, 0);
        count++;
        LPWSTR path = (LPWSTR)HeapAlloc(GetProcessHeap(), 0, count * sizeof(WCHAR));
        if (path)
        {
            count = DragQueryFileW((HDROP)stgm.hGlobal, 0, path, count);
            hr = Load(path, 0);
            HeapFree(GetProcessHeap(), 0, path);
        }
    }
    ReleaseStgMedium(&stgm);
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::QueryContextMenu(HMENU hMenu, UINT indexMenu, UINT idCmdFirst, UINT idCmdLast, UINT uFlags)
{
    INT id = 0;
 
    TRACE("%p %p %u %u %u %u\n", this,
          hMenu, indexMenu, idCmdFirst, idCmdLast, uFlags);
 
    if (!hMenu)
        return E_INVALIDARG;
 
    CStringW strOpen(MAKEINTRESOURCEW(IDS_OPEN_VERB));
    CStringW strOpenFileLoc(MAKEINTRESOURCEW(IDS_OPENFILELOCATION));
 
    MENUITEMINFOW mii;
    ZeroMemory(&mii, sizeof(mii));
    mii.cbSize = sizeof(mii);
    mii.fMask = MIIM_TYPE | MIIM_ID | MIIM_STATE;
    mii.dwTypeData = strOpen.GetBuffer();
    mii.cch = wcslen(mii.dwTypeData);
    mii.wID = idCmdFirst + id++;
    mii.fState = MFS_DEFAULT | MFS_ENABLED;
    mii.fType = MFT_STRING;
    if (!InsertMenuItemW(hMenu, indexMenu++, TRUE, &mii))
        return E_FAIL;
 
    mii.fMask = MIIM_TYPE | MIIM_ID | MIIM_STATE;
    mii.dwTypeData = strOpenFileLoc.GetBuffer();
    mii.cch = wcslen(mii.dwTypeData);
    mii.wID = idCmdFirst + id++;
    mii.fState = MFS_ENABLED;
    mii.fType = MFT_STRING;
    if (!InsertMenuItemW(hMenu, indexMenu++, TRUE, &mii))
        return E_FAIL;
 
    return MAKE_HRESULT(SEVERITY_SUCCESS, 0, id);
}
 
HRESULT CShellLink::DoOpenFileLocation()
{
    // TODO: SHOpenFolderAndSelectItems
    WCHAR szParams[MAX_PATH + 64];
    StringCbPrintfW(szParams, sizeof(szParams), L"/select,%s", m_sPath);
 
    INT_PTR ret;
    ret = reinterpret_cast<INT_PTR>(ShellExecuteW(NULL, NULL, L"explorer.exe", szParams,
                                                  NULL, m_Header.nShowCommand));
    if (ret <= 32)
    {
        ERR("ret: %08lX\n", ret);
        return E_FAIL;
    }
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::InvokeCommand(LPCMINVOKECOMMANDINFO lpici)
{
    TRACE("%p %p\n", this, lpici);
 
    if (lpici->cbSize < sizeof(CMINVOKECOMMANDINFO))
        return E_INVALIDARG;
 
    // NOTE: We could use lpici->hwnd (certainly in case lpici->fMask doesn't contain CMIC_MASK_FLAG_NO_UI)
    // as the parent window handle... ?
    /* FIXME: get using interface set from IObjectWithSite?? */
    // NOTE: We might need an extended version of Resolve that provides us with paths...
    HRESULT hr = Resolve(lpici->hwnd, (lpici->fMask & CMIC_MASK_FLAG_NO_UI) ? SLR_NO_UI : 0);
    if (FAILED(hr))
    {
        TRACE("failed to resolve component error 0x%08x\n", hr);
        return hr;
    }
 
    UINT idCmd = LOWORD(lpici->lpVerb);
    TRACE("idCmd: %d\n", idCmd);
 
    switch (idCmd)
    {
    case IDCMD_OPEN:
        return DoOpen(lpici);
    case IDCMD_OPENFILELOCATION:
        return DoOpenFileLocation();
    default:
        return E_NOTIMPL;
    }
}
 
HRESULT CShellLink::DoOpen(LPCMINVOKECOMMANDINFO lpici)
{
    LPCMINVOKECOMMANDINFOEX iciex = (LPCMINVOKECOMMANDINFOEX)lpici;
    const BOOL unicode = IsUnicode(*lpici);
 
    CStringW args;
    if (m_sArgs)
        args = m_sArgs;
 
    if (unicode)
    {
        if (!StrIsNullOrEmpty(iciex->lpParametersW))
        {
            args += L' ';
            args += iciex->lpParametersW;
        }
    }
    else
    {
        CComHeapPtr<WCHAR> pszParams;
        if (!StrIsNullOrEmpty(lpici->lpParameters) && __SHCloneStrAtoW(&pszParams, lpici->lpParameters))
        {
            args += L' ';
            args += pszParams;
        }
    }
 
    WCHAR dir[MAX_PATH];
    SHELLEXECUTEINFOW sei = { sizeof(sei) };
    sei.fMask = SEE_MASK_HASLINKNAME | SEE_MASK_UNICODE | SEE_MASK_DOENVSUBST |
               (lpici->fMask & (SEE_MASK_NOASYNC | SEE_MASK_ASYNCOK | SEE_MASK_FLAG_NO_UI));
    sei.lpDirectory = m_sWorkDir;
    if (m_pPidl)
    {
        sei.lpIDList = m_pPidl;
        sei.fMask |= SEE_MASK_INVOKEIDLIST;
    }
    else
    {
        sei.lpFile = m_sPath;
        if (!(m_Header.dwFlags & SLDF_HAS_EXP_SZ))
        {
            sei.fMask &= ~SEE_MASK_DOENVSUBST; // The link does not want to expand lpFile
            if (m_sWorkDir && ExpandEnvironmentStringsW(m_sWorkDir, dir, _countof(dir)) <= _countof(dir))
                sei.lpDirectory = dir;
        }
    }
    sei.lpParameters = args;
    sei.lpClass = m_sLinkPath;
    sei.nShow = m_Header.nShowCommand;
    if (lpici->nShow != SW_SHOWNORMAL && lpici->nShow != SW_SHOW)
        sei.nShow = lpici->nShow; // Allow invoker to override .lnk show mode
 
    // Use the invoker specified working directory if the link did not specify one
    if (StrIsNullOrEmpty(sei.lpDirectory) || !PathEnvSubstIsDirectory(sei.lpDirectory))
    {
        LPCSTR pszDirA = lpici->lpDirectory;
        if (unicode && !StrIsNullOrEmpty(iciex->lpDirectoryW))
            sei.lpDirectory = iciex->lpDirectoryW;
        else if (pszDirA && SHAnsiToUnicode(pszDirA, dir, _countof(dir)))
            sei.lpDirectory = dir;
    }
 
    sei.dwHotKey = lpici->dwHotKey;
    sei.fMask |= CmicFlagsToSeeFlags(lpici->fMask & CMIC_MASK_HOTKEY);
    if (m_Header.wHotKey)
    {
        sei.dwHotKey = m_Header.wHotKey;
        sei.fMask |= SEE_MASK_HOTKEY;
    }
    return (ShellExecuteExW(&sei) ? S_OK : E_FAIL);
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetCommandString(UINT_PTR idCmd, UINT uType, UINT* pwReserved, LPSTR pszName, UINT cchMax)
{
    FIXME("%p %lu %u %p %p %u\n", this, idCmd, uType, pwReserved, pszName, cchMax);
    return E_NOTIMPL;
}
 
INT_PTR CALLBACK ExtendedShortcutProc(HWND hwndDlg, UINT uMsg,
                                      WPARAM wParam, LPARAM lParam)
{
    switch(uMsg)
    {
        case WM_INITDIALOG:
            if (lParam)
            {
                HWND hDlgCtrl = GetDlgItem(hwndDlg, IDC_SHORTEX_RUN_DIFFERENT);
                SendMessage(hDlgCtrl, BM_SETCHECK, BST_CHECKED, 0);
            }
            return TRUE;
        case WM_COMMAND:
        {
            HWND hDlgCtrl = GetDlgItem(hwndDlg, IDC_SHORTEX_RUN_DIFFERENT);
            if (LOWORD(wParam) == IDOK)
            {
                if (SendMessage(hDlgCtrl, BM_GETCHECK, 0, 0) == BST_CHECKED)
                    EndDialog(hwndDlg, 1);
                else
                    EndDialog(hwndDlg, 0);
            }
            else if (LOWORD(wParam) == IDCANCEL)
            {
                EndDialog(hwndDlg, -1);
            }
            else if (LOWORD(wParam) == IDC_SHORTEX_RUN_DIFFERENT)
            {
                if (SendMessage(hDlgCtrl, BM_GETCHECK, 0, 0) == BST_CHECKED)
                    SendMessage(hDlgCtrl, BM_SETCHECK, BST_UNCHECKED, 0);
                else
                    SendMessage(hDlgCtrl, BM_SETCHECK, BST_CHECKED, 0);
            }
        }
    }
    return FALSE;
}
 
static void GetTypeDescriptionByPath(PCWSTR pszFullPath, DWORD fAttributes, PWSTR szBuf, UINT cchBuf)
{
    if (fAttributes == INVALID_FILE_ATTRIBUTES && !PathFileExistsAndAttributesW(pszFullPath, &fAttributes))
        fAttributes = 0;
 
    SHFILEINFOW fi;
    if (!SHGetFileInfoW(pszFullPath, fAttributes, &fi, sizeof(fi), SHGFI_TYPENAME | SHGFI_USEFILEATTRIBUTES))
    {
        ERR("SHGetFileInfoW failed for %ls (%lu)\n", pszFullPath, GetLastError());
        fi.szTypeName[0] = UNICODE_NULL;
    }
 
    BOOL fFolder = (fAttributes & FILE_ATTRIBUTE_DIRECTORY);
    LPCWSTR pwszExt = fFolder ? L"" : PathFindExtensionW(pszFullPath);
    if (pwszExt[0])
    {
        if (!fi.szTypeName[0])
            StringCchPrintfW(szBuf, cchBuf, L"%s", pwszExt + 1);
        else
            StringCchPrintfW(szBuf, cchBuf, L"%s (%s)", fi.szTypeName, pwszExt);
    }
    else
    {
        StringCchPrintfW(szBuf, cchBuf, L"%s", fi.szTypeName);
    }
}
 
BOOL CShellLink::OnInitDialog(HWND hwndDlg, HWND hwndFocus, LPARAM lParam)
{
    TRACE("CShellLink::OnInitDialog(hwnd %p hwndFocus %p lParam %p)\n", hwndDlg, hwndFocus, lParam);
 
    Resolve(0, SLR_NO_UI | SLR_NOUPDATE | SLR_NOSEARCH | SLR_NOTRACK);
 
    TRACE("m_sArgs: %S sComponent: %S m_sDescription: %S m_sIcoPath: %S m_sPath: %S m_sPathRel: %S sProduct: %S m_sWorkDir: %S\n", m_sArgs, sComponent, m_sDescription,
          m_sIcoPath, m_sPath, m_sPathRel, sProduct, m_sWorkDir);
 
    m_bInInit = TRUE;
    UINT darwin = m_Header.dwFlags & (SLDF_HAS_DARWINID);
 
    /* Get file information */
    // FIXME! FIXME! Shouldn't we use m_sIcoPath, m_Header.nIconIndex instead???
    SHFILEINFOW fi;
    if (!SHGetFileInfoW(m_sLinkPath, 0, &fi, sizeof(fi), SHGFI_TYPENAME | SHGFI_ICON))
    {
        ERR("SHGetFileInfoW failed for %ls (%lu)\n", m_sLinkPath, GetLastError());
        fi.szTypeName[0] = L'\0';
        fi.hIcon = NULL;
    }
 
    if (fi.hIcon)
    {
        if (m_hIcon)
            DestroyIcon(m_hIcon);
        m_hIcon = fi.hIcon;
        SendDlgItemMessageW(hwndDlg, IDC_SHORTCUT_ICON, STM_SETICON, (WPARAM)m_hIcon, 0);
    }
    else
    {
        ERR("ExtractIconW failed %ls %d\n", m_sIcoPath, m_Header.nIconIndex);
    }
 
    if (!SHGetFileInfoW(m_sLinkPath, 0, &fi, sizeof(fi), SHGFI_DISPLAYNAME))
        fi.szDisplayName[0] = UNICODE_NULL;
    SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_TEXT, fi.szDisplayName);
 
    /* Target type */
    if (m_sPath)
    {
        WCHAR buf[MAX_PATH];
        GetTypeDescriptionByPath(m_sPath, m_Header.dwFileAttributes, buf, _countof(buf));
        SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_TYPE_EDIT, buf);
    }
 
    /* Target location */
    if (m_sPath)
    {
        WCHAR target[MAX_PATH];
        StringCchCopyW(target, _countof(target), m_sPath);
        PathRemoveFileSpecW(target);
        SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_LOCATION_EDIT, PathFindFileNameW(target));
    }
 
    /* Target path */
    if (m_sPath)
    {
        WCHAR newpath[MAX_PATH * 2];
        newpath[0] = UNICODE_NULL;
        if (wcschr(m_sPath, ' '))
            StringCchPrintfExW(newpath, _countof(newpath), NULL, NULL, 0, L"\"%ls\"", m_sPath);
        else
            StringCchCopyExW(newpath, _countof(newpath), m_sPath, NULL, NULL, 0);
 
        if (m_sArgs && m_sArgs[0])
        {
            StringCchCatW(newpath, _countof(newpath), L" ");
            StringCchCatW(newpath, _countof(newpath), m_sArgs);
        }
        SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_TARGET_TEXT, newpath);
    }
 
    /* Working dir */
    if (m_sWorkDir)
        SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_START_IN_EDIT, m_sWorkDir);
 
    /* Description */
    if (m_sDescription)
        SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_COMMENT_EDIT, m_sDescription);
 
    /* Hot key */
    SendDlgItemMessageW(hwndDlg, IDC_SHORTCUT_KEY_HOTKEY, HKM_SETHOTKEY, m_Header.wHotKey, 0);
 
    /* Run */
    const WORD runstrings[] = { IDS_SHORTCUT_RUN_NORMAL, IDS_SHORTCUT_RUN_MIN, IDS_SHORTCUT_RUN_MAX };
    const DWORD runshowcmd[] = { SW_SHOWNORMAL, SW_SHOWMINNOACTIVE, SW_SHOWMAXIMIZED };
    HWND hRunCombo = GetDlgItem(hwndDlg, IDC_SHORTCUT_RUN_COMBO);
    for (UINT i = 0; i < _countof(runstrings); ++i)
    {
        WCHAR buf[MAX_PATH];
        if (!LoadStringW(shell32_hInstance, runstrings[i], buf, _countof(buf)))
            break;
 
        int index = SendMessageW(hRunCombo, CB_ADDSTRING, 0, (LPARAM)buf);
        if (index < 0)
            continue;
        SendMessageW(hRunCombo, CB_SETITEMDATA, index, runshowcmd[i]);
        if (!i || m_Header.nShowCommand == runshowcmd[i])
            SendMessageW(hRunCombo, CB_SETCURSEL, index, 0);
    }
 
    BOOL disablecontrols = FALSE;
    if (darwin)
    {
        disablecontrols = TRUE;
        EnableWindow(GetDlgItem(hwndDlg, IDC_SHORTCUT_FIND), FALSE);
        EnableWindow(GetDlgItem(hwndDlg, IDC_SHORTCUT_CHANGE_ICON), FALSE);
    }
    else
    {
        WCHAR path[MAX_PATH * 2];
        path[0] = UNICODE_NULL;
        HRESULT hr = GetPath(path, _countof(path), NULL, SLGP_RAWPATH);
        if (FAILED(hr))
            hr = GetPath(path, _countof(path), NULL, 0);
#if DBG
        if (GetKeyState(VK_CONTROL) < 0) // Allow inspection of PIDL parsing path
        {
            hr = S_OK;
            path[0] = UNICODE_NULL;
        }
#endif
        if (hr != S_OK)
        {
            disablecontrols = TRUE;
            LPITEMIDLIST pidl;
            if (GetIDList(&pidl) == S_OK)
            {
                path[0] = UNICODE_NULL;
                SHGetNameAndFlagsW(pidl, SHGDN_FORADDRESSBAR | SHGDN_FORPARSING, path, _countof(path), NULL);
                SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_TYPE_EDIT, path);
                SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_TARGET_TEXT, path);
                ILRemoveLastID(pidl);
                path[0] = UNICODE_NULL;
                SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_START_IN_EDIT, path);
                SHGetNameAndFlagsW(pidl, SHGDN_NORMAL, path, _countof(path), NULL);
                SetDlgItemTextW(hwndDlg, IDC_SHORTCUT_LOCATION_EDIT, path);
                ILFree(pidl);
            }
            EnableWindow(GetDlgItem(hwndDlg, IDC_SHORTCUT_ADVANCED), FALSE);
            EnableWindow(GetDlgItem(hwndDlg, IDC_SHORTCUT_START_IN_EDIT), FALSE);
        }
        else
        {
            ASSERT(FAILED(hr) || !(path[0] == ':' && path[1] == ':' && path[2] == '{'));
        }
    }
 
    HWND hWndTarget = GetDlgItem(hwndDlg, IDC_SHORTCUT_TARGET_TEXT);
    EnableWindow(hWndTarget, !disablecontrols);
    PostMessage(hWndTarget, EM_SETSEL, 0, -1); // Fix caret bug when first opening the tab [CORE-20016]
 
    /* auto-completion */
    SHAutoComplete(hWndTarget, SHACF_DEFAULT);
    SHAutoComplete(GetDlgItem(hwndDlg, IDC_SHORTCUT_START_IN_EDIT), SHACF_DEFAULT);
 
    m_bInInit = FALSE;
 
    return TRUE;
}
 
void CShellLink::OnCommand(HWND hwndDlg, int id, HWND hwndCtl, UINT codeNotify)
{
    switch (id)
    {
        case IDC_SHORTCUT_FIND:
            SHOpenFolderAndSelectItems(m_pPidl, 0, NULL, 0);
            return;
 
        case IDC_SHORTCUT_CHANGE_ICON:
        {
            SHFILEINFOW fi;
            INT IconIndex = m_Header.nIconIndex;
            WCHAR wszPath[MAX_PATH];
            *wszPath = UNICODE_NULL;
 
            if (!StrIsNullOrEmpty(m_sIcoPath))
            {
                PWSTR pszPath = m_sIcoPath;
                if (*m_sIcoPath == '.') // Extension-only icon location, we need a fake path
                {
                    if (SUCCEEDED(StringCchPrintfW(wszPath, _countof(wszPath), L"x:\\x%s", m_sIcoPath)) &&
                        SHGetFileInfoW(wszPath, 0, &fi, sizeof(fi), SHGFI_ICONLOCATION | SHGFI_USEFILEATTRIBUTES))
                    {
                        pszPath = fi.szDisplayName; // The path is now a generic icon based
                        IconIndex = fi.iIcon;       // on the registry info of the file extension.
                    }
                }
 
                if (FAILED(StringCchCopyW(wszPath, _countof(wszPath), pszPath)))
                    *wszPath = UNICODE_NULL;
            }
            else if (!StrIsNullOrEmpty(m_sPath))
            {
                FindExecutableW(m_sPath, NULL, wszPath);
            }
 
            if (!*wszPath && m_pPidl)
            {
                if (SHGetFileInfoW((PWSTR)m_pPidl, 0, &fi, sizeof(fi), SHGFI_ICONLOCATION | SHGFI_PIDL) &&
                    SUCCEEDED(StringCchCopyW(wszPath, _countof(wszPath), fi.szDisplayName)))
                {
                    IconIndex = fi.iIcon;
                }
            }
 
            if (PickIconDlg(hwndDlg, wszPath, _countof(wszPath), &IconIndex))
            {
                SetIconLocation(wszPath, IconIndex);
                PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
 
                HICON hIconLarge = CreateShortcutIcon(wszPath, IconIndex);
                if (hIconLarge)
                {
                    if (m_hIcon)
                        DestroyIcon(m_hIcon);
                    m_hIcon = hIconLarge;
                    SendDlgItemMessageW(hwndDlg, IDC_SHORTCUT_ICON, STM_SETICON, (WPARAM)m_hIcon, 0);
                }
            }
            return;
        }
 
        case IDC_SHORTCUT_ADVANCED:
        {
            INT_PTR result = DialogBoxParamW(shell32_hInstance, MAKEINTRESOURCEW(IDD_SHORTCUT_EXTENDED_PROPERTIES), hwndDlg, ExtendedShortcutProc, (LPARAM)m_bRunAs);
            if (result == 1 || result == 0)
            {
                if (m_bRunAs != result)
                {
                    PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
                }
 
                m_bRunAs = result;
            }
            return;
        }
    }
    if (codeNotify == EN_CHANGE || codeNotify == CBN_SELCHANGE)
    {
        if (!m_bInInit)
            PropSheet_Changed(GetParent(hwndDlg), hwndDlg);
    }
}
 
LRESULT CShellLink::OnNotify(HWND hwndDlg, int idFrom, LPNMHDR pnmhdr)
{
    WCHAR wszBuf[MAX_PATH];
    LPPSHNOTIFY lppsn = (LPPSHNOTIFY)pnmhdr;
 
    if (lppsn->hdr.code == PSN_APPLY)
    {
        /* set working directory */
        GetDlgItemTextW(hwndDlg, IDC_SHORTCUT_START_IN_EDIT, wszBuf, _countof(wszBuf));
        SetWorkingDirectory(wszBuf);
 
        /* set link destination */
        HWND hWndTarget = GetDlgItem(hwndDlg, IDC_SHORTCUT_TARGET_TEXT);
        GetWindowTextW(hWndTarget, wszBuf, _countof(wszBuf));
        // Only set the path and arguments for filesystem targets (we can't verify other targets)
        if (IsWindowEnabled(hWndTarget))
        {
            LPWSTR lpszArgs = NULL;
            LPWSTR unquoted = wszBuf;
            StrTrimW(unquoted, L" ");
 
            if (!PathFileExistsW(unquoted))
            {
                lpszArgs = PathGetArgsW(unquoted);
                PathRemoveArgsW(unquoted);
                StrTrimW(lpszArgs, L" ");
            }
            if (unquoted[0] == '"' && unquoted[wcslen(unquoted) - 1] == '"')
                PathUnquoteSpacesW(unquoted);
 
            WCHAR *pwszExt = PathFindExtensionW(unquoted);
            if (!_wcsicmp(pwszExt, L".lnk"))
            {
                // TODO: SLDF_ALLOW_LINK_TO_LINK (Win7+)
                // FIXME load localized error msg
                MessageBoxW(hwndDlg, L"You cannot create a link to a shortcut", NULL, MB_ICONERROR);
                SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, PSNRET_INVALID_NOCHANGEPAGE);
                return TRUE;
            }
 
            if (!PathFileExistsW(unquoted))
            {
                // FIXME load localized error msg
                MessageBoxW(hwndDlg, L"The specified file name in the target box is invalid", NULL, MB_ICONERROR);
                SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, PSNRET_INVALID_NOCHANGEPAGE);
                return TRUE;
            }
 
            SetPath(unquoted);
            SetArguments(lpszArgs ? lpszArgs : L"\0");
        }
 
        m_Header.wHotKey = (WORD)SendDlgItemMessageW(hwndDlg, IDC_SHORTCUT_KEY_HOTKEY, HKM_GETHOTKEY, 0, 0);
 
        int index = (int)SendDlgItemMessageW(hwndDlg, IDC_SHORTCUT_RUN_COMBO, CB_GETCURSEL, 0, 0);
        if (index != CB_ERR)
        {
            m_Header.nShowCommand = (UINT)SendDlgItemMessageW(hwndDlg, IDC_SHORTCUT_RUN_COMBO, CB_GETITEMDATA, index, 0);
        }
 
        TRACE("This %p m_sLinkPath %S\n", this, m_sLinkPath);
        Save(m_sLinkPath, TRUE);
        SHChangeNotify(SHCNE_UPDATEITEM, SHCNF_PATHW, m_sLinkPath, NULL);
        SetWindowLongPtr(hwndDlg, DWLP_MSGRESULT, PSNRET_NOERROR);
        return TRUE;
    }
    return FALSE;
}
 
void CShellLink::OnDestroy(HWND hwndDlg)
{
    if (m_hIcon)
    {
        DestroyIcon(m_hIcon);
        m_hIcon = NULL;
    }
}
 
/**************************************************************************
 * SH_ShellLinkDlgProc
 *
 * dialog proc of the shortcut property dialog
 */
 
INT_PTR CALLBACK
CShellLink::SH_ShellLinkDlgProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    LPPROPSHEETPAGEW ppsp;
    CShellLink *pThis = reinterpret_cast<CShellLink *>(GetWindowLongPtr(hwndDlg, DWLP_USER));
 
    switch (uMsg)
    {
        case WM_INITDIALOG:
            ppsp = (LPPROPSHEETPAGEW)lParam;
            if (ppsp == NULL)
                break;
 
            pThis = reinterpret_cast<CShellLink *>(ppsp->lParam);
            SetWindowLongPtr(hwndDlg, DWLP_USER, (LONG_PTR)pThis);
            return pThis->OnInitDialog(hwndDlg, (HWND)(wParam), lParam);
 
        case WM_NOTIFY:
            return pThis->OnNotify(hwndDlg, (int)wParam, (NMHDR *)lParam);
 
        case WM_COMMAND:
            pThis->OnCommand(hwndDlg, LOWORD(wParam), (HWND)lParam, HIWORD(wParam));
            break;
 
        case WM_DESTROY:
            pThis->OnDestroy(hwndDlg);
            break;
 
        default:
            break;
    }
 
    return FALSE;
}
 
/**************************************************************************
 * ShellLink_IShellPropSheetExt interface
 */
 
HRESULT STDMETHODCALLTYPE CShellLink::AddPages(LPFNADDPROPSHEETPAGE pfnAddPage, LPARAM lParam)
{
    HPROPSHEETPAGE hPage = SH_CreatePropertySheetPageEx(IDD_SHORTCUT_PROPERTIES, SH_ShellLinkDlgProc,
                                                        (LPARAM)this, NULL, &PropSheetPageLifetimeCallback<CShellLink>);
    HRESULT hr = AddPropSheetPage(hPage, pfnAddPage, lParam);
    if (FAILED_UNEXPECTEDLY(hr))
        return hr;
    else
        AddRef(); // For PropSheetPageLifetimeCallback
    enum { CShellLink_PageIndex_Shortcut = 0 };
    return 1 + CShellLink_PageIndex_Shortcut; // Make this page the default (one-based)
}
 
HRESULT STDMETHODCALLTYPE CShellLink::ReplacePage(UINT uPageID, LPFNADDPROPSHEETPAGE pfnReplacePage, LPARAM lParam)
{
    TRACE("(%p) (uPageID %u, pfnReplacePage %p lParam %p\n", this, uPageID, pfnReplacePage, lParam);
    return E_NOTIMPL;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::SetSite(IUnknown *punk)
{
    TRACE("%p %p\n", this, punk);
 
    m_site = punk;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::GetSite(REFIID iid, void ** ppvSite)
{
    TRACE("%p %s %p\n", this, debugstr_guid(&iid), ppvSite);
 
    if (m_site == NULL)
        return E_FAIL;
 
    return m_site->QueryInterface(iid, ppvSite);
}
 
HRESULT STDMETHODCALLTYPE CShellLink::DragEnter(IDataObject *pDataObject,
    DWORD dwKeyState, POINTL pt, DWORD *pdwEffect)
{
    TRACE("(%p)->(DataObject=%p)\n", this, pDataObject);
 
    if (*pdwEffect == DROPEFFECT_NONE)
        return S_OK;
 
    HRESULT hr = SHELL_GetUIObjectOfAbsoluteItem(NULL, m_pPidl, IID_PPV_ARG(IDropTarget, &m_DropTarget));
    if (SUCCEEDED(hr))
        hr = m_DropTarget->DragEnter(pDataObject, dwKeyState, pt, pdwEffect);
    else
        *pdwEffect = DROPEFFECT_NONE;
 
    return S_OK;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::DragOver(DWORD dwKeyState, POINTL pt,
    DWORD *pdwEffect)
{
    TRACE("(%p)\n", this);
    HRESULT hr = S_OK;
    if (m_DropTarget)
        hr = m_DropTarget->DragOver(dwKeyState, pt, pdwEffect);
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::DragLeave()
{
    TRACE("(%p)\n", this);
    HRESULT hr = S_OK;
    if (m_DropTarget)
    {
        hr = m_DropTarget->DragLeave();
        m_DropTarget.Release();
    }
 
    return hr;
}
 
HRESULT STDMETHODCALLTYPE CShellLink::Drop(IDataObject *pDataObject,
    DWORD dwKeyState, POINTL pt, DWORD *pdwEffect)
{
    TRACE("(%p)\n", this);
    HRESULT hr = S_OK;
    if (m_DropTarget)
        hr = m_DropTarget->Drop(pDataObject, dwKeyState, pt, pdwEffect);
 
    return hr;
}
 
/**************************************************************************
 *      IShellLink_ConstructFromFile
 */
HRESULT WINAPI IShellLink_ConstructFromPath(WCHAR *path, REFIID riid, LPVOID *ppv)
{
    CComPtr<IPersistFile> ppf;
    HRESULT hr = CShellLink::_CreatorClass::CreateInstance(NULL, IID_PPV_ARG(IPersistFile, &ppf));
    if (FAILED(hr))
        return hr;
 
    hr = ppf->Load(path, 0);
    if (FAILED(hr))
        return hr;
 
    return ppf->QueryInterface(riid, ppv);
}
 
HRESULT WINAPI IShellLink_ConstructFromFile(IShellFolder * psf, LPCITEMIDLIST pidl, REFIID riid, LPVOID *ppv)
{
    WCHAR path[MAX_PATH];
    if (!ILGetDisplayNameExW(psf, pidl, path, 0))
        return E_FAIL;
 
    return IShellLink_ConstructFromPath(path, riid, ppv);
}
 
HICON CShellLink::CreateShortcutIcon(LPCWSTR wszIconPath, INT IconIndex)
{
    const INT cx = GetSystemMetrics(SM_CXICON), cy = GetSystemMetrics(SM_CYICON);
    const COLORREF crMask = GetSysColor(COLOR_3DFACE);
    WCHAR wszLnkIcon[MAX_PATH];
    int lnk_idx;
    HDC hDC;
    HIMAGELIST himl = ImageList_Create(cx, cy, ILC_COLOR32 | ILC_MASK, 1, 1);
    HICON hIcon = NULL, hNewIcon = NULL, hShortcut;
 
    if (HLM_GetIconW(IDI_SHELL_SHORTCUT - 1, wszLnkIcon, _countof(wszLnkIcon), &lnk_idx))
    {
        ::ExtractIconExW(wszLnkIcon, lnk_idx, &hShortcut, NULL, 1);
    }
    else
    {
        hShortcut = (HICON)LoadImageW(shell32_hInstance, MAKEINTRESOURCE(IDI_SHELL_SHORTCUT),
                                      IMAGE_ICON, cx, cy, 0);
    }
 
    ::ExtractIconExW(wszIconPath, IconIndex, &hIcon, NULL, 1);
    if (!hIcon || !hShortcut || !himl)
        goto cleanup;
 
    hDC = CreateCompatibleDC(NULL);
    if (hDC)
    {
        // create 32bpp bitmap
        BITMAPINFO bi;
        ZeroMemory(&bi, sizeof(bi));
        bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
        bi.bmiHeader.biWidth = cx;
        bi.bmiHeader.biHeight = cy;
        bi.bmiHeader.biPlanes = 1;
        bi.bmiHeader.biBitCount = 32;
        LPVOID pvBits;
        HBITMAP hbm = CreateDIBSection(hDC, &bi, DIB_RGB_COLORS, &pvBits, NULL, 0);
        if (hbm)
        {
            // draw the icon image
            HGDIOBJ hbmOld = SelectObject(hDC, hbm);
            {
                HBRUSH hbr = CreateSolidBrush(crMask);
                RECT rc = { 0, 0, cx, cy };
                FillRect(hDC, &rc, hbr);
                DeleteObject(hbr);
 
                DrawIconEx(hDC, 0, 0, hIcon, cx, cy, 0, NULL, DI_NORMAL);
                DrawIconEx(hDC, 0, 0, hShortcut, cx, cy, 0, NULL, DI_NORMAL);
            }
            SelectObject(hDC, hbmOld);
 
            INT iAdded = ImageList_AddMasked(himl, hbm, crMask);
            hNewIcon = ImageList_GetIcon(himl, iAdded, ILD_NORMAL | ILD_TRANSPARENT);
 
            DeleteObject(hbm);
        }
        DeleteDC(hDC);
    }
 
cleanup:
    if (hIcon)
        DestroyIcon(hIcon);
    if (hShortcut)
        DestroyIcon(hShortcut);
    if (himl)
        ImageList_Destroy(himl);
 
    return hNewIcon;
}