368 lines
10 KiB
C++
368 lines
10 KiB
C++
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/*
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* urlexec.cpp - IUnknown implementation for Intshcut class.
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*/
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#include "project.hpp"
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#include "urlshell.h"
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#include "clsfact.h"
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#include "resource.h"
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#include <mluisupp.h>
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// URL Exec Hook
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class CURLExec : public IShellExecuteHookA, public IShellExecuteHookW
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{
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private:
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ULONG m_cRef;
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~CURLExec(void); // Prevent this class from being allocated on the stack or it will fault.
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public:
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CURLExec(void);
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// IShellExecuteHook methods
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// Ansi
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STDMETHODIMP Execute(LPSHELLEXECUTEINFOA pei);
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// Unicode
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STDMETHODIMP Execute(LPSHELLEXECUTEINFOW pei);
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// IUnknown methods
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STDMETHODIMP QueryInterface(REFIID riid, PVOID *ppvObj);
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STDMETHODIMP_(ULONG) AddRef(void);
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STDMETHODIMP_(ULONG) Release(void);
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#ifdef DEBUG
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friend BOOL IsValidPCURLExec(const CURLExec * pue);
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#endif
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};
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#ifdef DEBUG
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BOOL IsValidPCURLExec(CURLExec * pue)
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{
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return (IS_VALID_READ_PTR(pue, CURLExec));
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}
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#endif
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CURLExec::CURLExec(void) : m_cRef(1)
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{
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// CURLExec objects should always be allocated
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ASSERT(IS_VALID_STRUCT_PTR(this, CURLExec));
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DLLAddRef();
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}
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CURLExec::~CURLExec(void)
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{
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ASSERT(IS_VALID_STRUCT_PTR(this, CURLExec));
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DLLRelease();
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}
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/*----------------------------------------------------------
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Purpose: IUnknown::QueryInterface handler for CURLExec
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*/
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STDMETHODIMP CURLExec::QueryInterface(REFIID riid, PVOID *ppvObj)
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{
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if (IsEqualIID(riid, IID_IUnknown) ||
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IsEqualIID(riid, IID_IShellExecuteHookA))
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{
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*ppvObj = SAFECAST(this, IShellExecuteHookA *);
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}
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else if (IsEqualIID(riid, IID_IShellExecuteHookW))
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{
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*ppvObj = SAFECAST(this, IShellExecuteHookW *);
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}
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else
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{
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*ppvObj = NULL;
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return E_NOINTERFACE;
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}
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AddRef();
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return NOERROR;
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}
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STDMETHODIMP_(ULONG) CURLExec::AddRef()
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{
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return ++m_cRef;
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}
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STDMETHODIMP_(ULONG) CURLExec::Release()
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{
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m_cRef--;
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if (m_cRef > 0)
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return m_cRef;
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delete this;
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return 0;
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}
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// from shlexec.c
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#define SEE_MASK_CLASS (SEE_MASK_CLASSNAME|SEE_MASK_CLASSKEY)
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/*----------------------------------------------------------
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Purpose: IShellExecuteHook::Execute handler for CURLExec
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*/
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STDMETHODIMP CURLExec::Execute(LPSHELLEXECUTEINFOA pei)
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{
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HRESULT hres;
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ASSERT(IS_VALID_STRUCT_PTR(this, CURLExec));
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ASSERT(IS_VALID_READ_PTR(pei, SHELLEXECUTEINFO));
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if (! pei->lpVerb ||
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! lstrcmpi(pei->lpVerb, TEXT("open")))
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{
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if (pei->lpFile)
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{
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LPTSTR pszURL;
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// This should succeed only for real URLs. We should fail
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// for file paths and let the shell handle those.
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hres = TranslateURL(pei->lpFile,
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TRANSLATEURL_FL_GUESS_PROTOCOL | TRANSLATEURL_FL_CANONICALIZE,
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&pszURL);
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if (SUCCEEDED(hres))
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{
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LPCTSTR pszURLToUse;
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pszURLToUse = (hres == S_OK) ? pszURL : pei->lpFile;
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hres = ValidateURL(pszURLToUse);
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if (SUCCEEDED(hres))
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{
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IUniformResourceLocator * purl;
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hres = SHCoCreateInstance(NULL, &CLSID_InternetShortcut, NULL, IID_IUniformResourceLocator, (void **)&purl);
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if (SUCCEEDED(hres))
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{
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hres = purl->SetURL(pszURLToUse, 0);
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if (hres == S_OK)
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{
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IShellLink * psl;
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hres = purl->QueryInterface(IID_IShellLink, (void **)&psl);
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if (SUCCEEDED(hres))
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{
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URLINVOKECOMMANDINFO urlici;
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EVAL(psl->SetShowCmd(pei->nShow) == S_OK);
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urlici.dwcbSize = SIZEOF(urlici);
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urlici.hwndParent = pei->hwnd;
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urlici.pcszVerb = NULL;
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urlici.dwFlags = IURL_INVOKECOMMAND_FL_USE_DEFAULT_VERB;
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if (IsFlagClear(pei->fMask, SEE_MASK_FLAG_NO_UI))
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SetFlag(urlici.dwFlags, IURL_INVOKECOMMAND_FL_ALLOW_UI);
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hres = purl->InvokeCommand(&urlici);
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if (hres != S_OK)
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SetFlag(pei->fMask, SEE_MASK_FLAG_NO_UI);
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psl->Release();
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}
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}
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purl->Release();
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}
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}
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if (pszURL)
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LocalFree(pszURL);
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}
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}
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else
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// (scotth): This hook only handles execution of file string, not IDList.
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hres = S_FALSE;
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}
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else
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// Unrecognized verb.
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hres = S_FALSE;
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if (hres == S_OK)
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pei->hInstApp = (HINSTANCE)42; // huh??
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else if (FAILED(hres))
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{
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switch (hres)
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{
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case URL_E_INVALID_SYNTAX:
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case URL_E_UNREGISTERED_PROTOCOL:
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hres = S_FALSE;
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break;
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case E_OUTOFMEMORY:
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pei->hInstApp = (HINSTANCE)SE_ERR_OOM;
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hres = E_FAIL;
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break;
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case IS_E_EXEC_FAILED:
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// Translate execution failure into "file not found".
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pei->hInstApp = (HINSTANCE)SE_ERR_FNF;
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hres = E_FAIL;
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break;
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default:
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// pei->lpFile is bogus. Treat as file not found.
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ASSERT(hres == E_POINTER);
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pei->hInstApp = (HINSTANCE)SE_ERR_FNF;
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hres = E_FAIL;
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break;
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}
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}
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else
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ASSERT(hres == S_FALSE);
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ASSERT(hres == S_OK ||
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hres == S_FALSE ||
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hres == E_FAIL);
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return hres;
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}
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STDMETHODIMP CURLExec::Execute(LPSHELLEXECUTEINFOW pei)
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{
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// thunk stuff copied from shlexec.c InvokeShellExecuteHook
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SHELLEXECUTEINFOA seia;
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UINT cchVerb = 0;
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UINT cchFile = 0;
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UINT cchParameters = 0;
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UINT cchDirectory = 0;
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UINT cchClass = 0;
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LPSTR lpszBuffer;
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HRESULT hres = E_FAIL;
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seia = *(SHELLEXECUTEINFOA*)pei; // Copy all of the binary data
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if (pei->lpVerb)
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{
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cchVerb = WideCharToMultiByte(CP_ACP,0,
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pei->lpVerb, -1,
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NULL, 0,
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NULL, NULL)+1;
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}
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if (pei->lpFile)
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cchFile = WideCharToMultiByte(CP_ACP,0,
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pei->lpFile, -1,
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NULL, 0,
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NULL, NULL)+1;
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if (pei->lpParameters)
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cchParameters = WideCharToMultiByte(CP_ACP,0,
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pei->lpParameters, -1,
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NULL, 0,
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NULL, NULL)+1;
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if (pei->lpDirectory)
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cchDirectory = WideCharToMultiByte(CP_ACP,0,
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pei->lpDirectory, -1,
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NULL, 0,
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NULL, NULL)+1;
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if (((pei->fMask & SEE_MASK_CLASS) == SEE_MASK_CLASSNAME) && pei->lpClass)
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cchClass = WideCharToMultiByte(CP_ACP,0,
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pei->lpClass, -1,
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NULL, 0,
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NULL, NULL)+1;
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// what is this (alloca)? InvokeShellExecuteHook is not freeing lpszBuffer
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//lpszBuffer = alloca(cchVerb+cchFile+cchParameters+cchDirectory+cchClass);
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lpszBuffer = (LPSTR)LocalAlloc(LPTR, cchVerb+cchFile+cchParameters+cchDirectory+cchClass);
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if (lpszBuffer)
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{
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LPSTR lpsz = lpszBuffer;
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seia.lpVerb = NULL;
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seia.lpFile = NULL;
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seia.lpParameters = NULL;
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seia.lpDirectory = NULL;
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seia.lpClass = NULL;
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//
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// Convert all of the strings to ANSI
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//
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if (pei->lpVerb)
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{
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WideCharToMultiByte(CP_ACP, 0, pei->lpVerb, -1,
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lpszBuffer, cchVerb, NULL, NULL);
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seia.lpVerb = lpszBuffer;
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lpszBuffer += cchVerb;
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}
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if (pei->lpFile)
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{
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WideCharToMultiByte(CP_ACP, 0, pei->lpFile, -1,
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lpszBuffer, cchFile, NULL, NULL);
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seia.lpFile = lpszBuffer;
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lpszBuffer += cchFile;
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}
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if (pei->lpParameters)
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{
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WideCharToMultiByte(CP_ACP, 0,
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pei->lpParameters, -1,
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lpszBuffer, cchParameters, NULL, NULL);
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seia.lpParameters = lpszBuffer;
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lpszBuffer += cchParameters;
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}
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if (pei->lpDirectory)
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{
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WideCharToMultiByte(CP_ACP, 0,
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pei->lpDirectory, -1,
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lpszBuffer, cchDirectory, NULL, NULL);
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seia.lpDirectory = lpszBuffer;
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lpszBuffer += cchDirectory;
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}
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if (((pei->fMask & SEE_MASK_CLASS) == SEE_MASK_CLASSNAME) && pei->lpClass)
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{
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WideCharToMultiByte(CP_ACP, 0,
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pei->lpClass, -1,
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lpszBuffer, cchClass, NULL, NULL);
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seia.lpClass = lpszBuffer;
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}
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hres = Execute(&seia);
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// now thunk the possible new stuff back
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pei->hInstApp = seia.hInstApp;
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if (pei->fMask & SEE_MASK_NOCLOSEPROCESS)
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pei->hProcess = seia.hProcess;
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LocalFree(lpsz);
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}
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return hres;
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}
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STDAPI CreateInstance_URLExec(LPUNKNOWN punkOuter, REFIID riid, void **ppvOut)
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{
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*ppvOut = NULL;
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if (punkOuter)
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return CLASS_E_NOAGGREGATION;
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CURLExec *pue = new(CURLExec);
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if (!pue)
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return E_OUTOFMEMORY;
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HRESULT hres = pue->QueryInterface(riid, ppvOut);
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pue->Release();
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return hres;
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}
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