cpython/PC/pyshellext.cpp at pythoncapi · pythoncapi/cpython · GitHub

History

605 lines (498 loc) · 18.1 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

// Support back to Vista

#define _WIN32_WINNT _WIN32_WINNT_VISTA

#include <sdkddkver.h>

// Use WRL to define a classic COM class

#define __WRL_CLASSIC_COM__

#include <wrl.h>

#include <windows.h>

#include <shlobj.h>

#include <shlwapi.h>

#include <olectl.h>

#include <strsafe.h>

#include "pyshellext_h.h"

#define DDWM_UPDATEWINDOW (WM_USER+3)

static HINSTANCE hModule;

static CLIPFORMAT cfDropDescription;

static CLIPFORMAT cfDragWindow;

static const LPCWSTR CLASS_SUBKEY = L"Software\\Classes\\CLSID\\{BEA218D2-6950-497B-9434-61683EC065FE}";

static const LPCWSTR DRAG_MESSAGE = L"Open with %1";

using namespace Microsoft::WRL;

HRESULT FilenameListCchLengthA(LPCSTR pszSource, size_t cchMax, size_t *pcchLength, size_t *pcchCount) {

HRESULT hr = S_OK;

size_t count = 0;

size_t length = 0;

while (pszSource && pszSource[0]) {

size_t oneLength;

hr = StringCchLengthA(pszSource, cchMax - length, &oneLength);

if (FAILED(hr)) {

return hr;

}

count += 1;

length += oneLength + (strchr(pszSource, ' ') ? 3 : 1);

pszSource = &pszSource[oneLength + 1];

}

*pcchCount = count;

*pcchLength = length;

return hr;

}

HRESULT FilenameListCchLengthW(LPCWSTR pszSource, size_t cchMax, size_t *pcchLength, size_t *pcchCount) {

HRESULT hr = S_OK;

size_t count = 0;

size_t length = 0;

while (pszSource && pszSource[0]) {

size_t oneLength;

hr = StringCchLengthW(pszSource, cchMax - length, &oneLength);

if (FAILED(hr)) {

return hr;

}

count += 1;

length += oneLength + (wcschr(pszSource, ' ') ? 3 : 1);

pszSource = &pszSource[oneLength + 1];

}

*pcchCount = count;

*pcchLength = length;

return hr;

}

HRESULT FilenameListCchCopyA(STRSAFE_LPSTR pszDest, size_t cchDest, LPCSTR pszSource, LPCSTR pszSeparator) {

HRESULT hr = S_OK;

size_t count = 0;

size_t length = 0;

while (pszSource[0]) {

STRSAFE_LPSTR newDest;

hr = StringCchCopyExA(pszDest, cchDest, pszSource, &newDest, &cchDest, 0);

if (FAILED(hr)) {

return hr;

}

pszSource += (newDest - pszDest) + 1;

pszDest = PathQuoteSpacesA(pszDest) ? newDest + 2 : newDest;

if (pszSource[0]) {

hr = StringCchCopyExA(pszDest, cchDest, pszSeparator, &newDest, &cchDest, 0);

if (FAILED(hr)) {

return hr;

}

pszDest = newDest;

}

return hr;

}

HRESULT FilenameListCchCopyW(STRSAFE_LPWSTR pszDest, size_t cchDest, LPCWSTR pszSource, LPCWSTR pszSeparator) {

HRESULT hr = S_OK;

size_t count = 0;

size_t length = 0;

while (pszSource[0]) {

STRSAFE_LPWSTR newDest;

hr = StringCchCopyExW(pszDest, cchDest, pszSource, &newDest, &cchDest, 0);

if (FAILED(hr)) {

return hr;

}

pszSource += (newDest - pszDest) + 1;

pszDest = PathQuoteSpacesW(pszDest) ? newDest + 2 : newDest;

if (pszSource[0]) {

hr = StringCchCopyExW(pszDest, cchDest, pszSeparator, &newDest, &cchDest, 0);

if (FAILED(hr)) {

return hr;

}

pszDest = newDest;

}

return hr;

}

class PyShellExt : public RuntimeClass<

RuntimeClassFlags<ClassicCom>,

IDropTarget,

IPersistFile

{

LPOLESTR target, target_dir;

DWORD target_mode;

IDataObject *data_obj;

public:

PyShellExt() : target(NULL), target_dir(NULL), target_mode(0), data_obj(NULL) {

OutputDebugString(L"PyShellExt::PyShellExt");

}

~PyShellExt() {

if (target) {

CoTaskMemFree(target);

}

if (target_dir) {

CoTaskMemFree(target_dir);

}

if (data_obj) {

data_obj->Release();

}

private:

HRESULT UpdateDropDescription(IDataObject *pDataObj) {

STGMEDIUM medium;

FORMATETC fmt = {

cfDropDescription,

NULL,

DVASPECT_CONTENT,

-1,

TYMED_HGLOBAL

};

auto hr = pDataObj->GetData(&fmt, &medium);

if (FAILED(hr)) {

OutputDebugString(L"PyShellExt::UpdateDropDescription - failed to get DROPDESCRIPTION format");

return hr;

}

if (!medium.hGlobal) {

OutputDebugString(L"PyShellExt::UpdateDropDescription - DROPDESCRIPTION format had NULL hGlobal");

ReleaseStgMedium(&medium);

return E_FAIL;

}

auto dd = (DROPDESCRIPTION*)GlobalLock(medium.hGlobal);

StringCchCopy(dd->szMessage, sizeof(dd->szMessage) / sizeof(dd->szMessage[0]), DRAG_MESSAGE);

StringCchCopy(dd->szInsert, sizeof(dd->szInsert) / sizeof(dd->szInsert[0]), PathFindFileNameW(target));

dd->type = DROPIMAGE_MOVE;

GlobalUnlock(medium.hGlobal);

ReleaseStgMedium(&medium);

return S_OK;

}

HRESULT GetDragWindow(IDataObject *pDataObj, HWND *phWnd) {

HRESULT hr;

HWND *pMem;

STGMEDIUM medium;

FORMATETC fmt = {

cfDragWindow,

NULL,

DVASPECT_CONTENT,

-1,

TYMED_HGLOBAL

};

hr = pDataObj->GetData(&fmt, &medium);

if (FAILED(hr)) {

OutputDebugString(L"PyShellExt::GetDragWindow - failed to get DragWindow format");

return hr;

}

if (!medium.hGlobal) {

OutputDebugString(L"PyShellExt::GetDragWindow - DragWindow format had NULL hGlobal");

ReleaseStgMedium(&medium);

return E_FAIL;

}

pMem = (HWND*)GlobalLock(medium.hGlobal);

if (!pMem) {

OutputDebugString(L"PyShellExt::GetDragWindow - failed to lock DragWindow hGlobal");

ReleaseStgMedium(&medium);

return E_FAIL;

}

*phWnd = *pMem;

GlobalUnlock(medium.hGlobal);

ReleaseStgMedium(&medium);

return S_OK;

}

HRESULT GetArguments(IDataObject *pDataObj, LPCWSTR *pArguments) {

HRESULT hr;

DROPFILES *pdropfiles;

STGMEDIUM medium;

FORMATETC fmt = {

CF_HDROP,

NULL,

DVASPECT_CONTENT,

-1,

TYMED_HGLOBAL

};

hr = pDataObj->GetData(&fmt, &medium);

if (FAILED(hr)) {

OutputDebugString(L"PyShellExt::GetArguments - failed to get CF_HDROP format");

return hr;

}

if (!medium.hGlobal) {

OutputDebugString(L"PyShellExt::GetArguments - CF_HDROP format had NULL hGlobal");

ReleaseStgMedium(&medium);

return E_FAIL;

}

pdropfiles = (DROPFILES*)GlobalLock(medium.hGlobal);

if (!pdropfiles) {

OutputDebugString(L"PyShellExt::GetArguments - failed to lock CF_HDROP hGlobal");

ReleaseStgMedium(&medium);

return E_FAIL;

}

if (pdropfiles->fWide) {

LPCWSTR files = (LPCWSTR)((char*)pdropfiles + pdropfiles->pFiles);

size_t len, count;

hr = FilenameListCchLengthW(files, 32767, &len, &count);

if (SUCCEEDED(hr)) {

LPWSTR args = (LPWSTR)CoTaskMemAlloc(sizeof(WCHAR) * (len + 1));

if (args) {

hr = FilenameListCchCopyW(args, 32767, files, L" ");

if (SUCCEEDED(hr)) {

*pArguments = args;

} else {

CoTaskMemFree(args);

}

} else {

hr = E_OUTOFMEMORY;

}

} else {

LPCSTR files = (LPCSTR)((char*)pdropfiles + pdropfiles->pFiles);

size_t len, count;

hr = FilenameListCchLengthA(files, 32767, &len, &count);

if (SUCCEEDED(hr)) {

LPSTR temp = (LPSTR)CoTaskMemAlloc(sizeof(CHAR) * (len + 1));

if (temp) {

hr = FilenameListCchCopyA(temp, 32767, files, " ");

if (SUCCEEDED(hr)) {

int wlen = MultiByteToWideChar(CP_ACP, 0, temp, (int)len, NULL, 0);

if (wlen) {

LPWSTR args = (LPWSTR)CoTaskMemAlloc(sizeof(WCHAR) * (wlen + 1));

if (MultiByteToWideChar(CP_ACP, 0, temp, (int)len, args, wlen + 1)) {

*pArguments = args;

} else {

OutputDebugString(L"PyShellExt::GetArguments - failed to convert multi-byte to wide-char path");

CoTaskMemFree(args);

hr = E_FAIL;

}

} else {

OutputDebugString(L"PyShellExt::GetArguments - failed to get length of wide-char path");

hr = E_FAIL;

}

CoTaskMemFree(temp);

} else {

hr = E_OUTOFMEMORY;

}

GlobalUnlock(medium.hGlobal);

ReleaseStgMedium(&medium);

return hr;

}

HRESULT NotifyDragWindow(HWND hwnd) {

LRESULT res;

if (!hwnd) {

return S_FALSE;

}

res = SendMessage(hwnd, DDWM_UPDATEWINDOW, 0, NULL);

if (res) {

OutputDebugString(L"PyShellExt::NotifyDragWindow - failed to post DDWM_UPDATEWINDOW");

return E_FAIL;

}

return S_OK;

}

public:

// IDropTarget implementation

STDMETHODIMP DragEnter(IDataObject *pDataObj, DWORD grfKeyState, POINTL pt, DWORD *pdwEffect) {

HWND hwnd;

OutputDebugString(L"PyShellExt::DragEnter");

pDataObj->AddRef();

data_obj = pDataObj;

*pdwEffect = DROPEFFECT_MOVE;

if (FAILED(UpdateDropDescription(data_obj))) {

OutputDebugString(L"PyShellExt::DragEnter - failed to update drop description");

}

if (FAILED(GetDragWindow(data_obj, &hwnd))) {

OutputDebugString(L"PyShellExt::DragEnter - failed to get drag window");

}

if (FAILED(NotifyDragWindow(hwnd))) {

OutputDebugString(L"PyShellExt::DragEnter - failed to notify drag window");

}

return S_OK;

}

STDMETHODIMP DragLeave() {

return S_OK;

}

STDMETHODIMP DragOver(DWORD grfKeyState, POINTL pt, DWORD *pdwEffect) {

return S_OK;

}

STDMETHODIMP Drop(IDataObject *pDataObj, DWORD grfKeyState, POINTL pt, DWORD *pdwEffect) {

LPCWSTR args;

OutputDebugString(L"PyShellExt::Drop");

*pdwEffect = DROPEFFECT_NONE;

if (pDataObj != data_obj) {

OutputDebugString(L"PyShellExt::Drop - unexpected data object");

return E_FAIL;

}

data_obj->Release();

data_obj = NULL;

if (SUCCEEDED(GetArguments(pDataObj, &args))) {

OutputDebugString(args);

ShellExecute(NULL, NULL, target, args, target_dir, SW_NORMAL);

CoTaskMemFree((LPVOID)args);

} else {

OutputDebugString(L"PyShellExt::Drop - failed to get launch arguments");

}

return S_OK;

}

// IPersistFile implementation

STDMETHODIMP GetCurFile(LPOLESTR *ppszFileName) {

HRESULT hr;

size_t len;

if (!ppszFileName) {

return E_POINTER;

}

hr = StringCchLength(target, STRSAFE_MAX_CCH - 1, &len);

if (FAILED(hr)) {

return E_FAIL;

}

*ppszFileName = (LPOLESTR)CoTaskMemAlloc(sizeof(WCHAR) * (len + 1));

if (!*ppszFileName) {

return E_OUTOFMEMORY;

}

hr = StringCchCopy(*ppszFileName, len + 1, target);

if (FAILED(hr)) {

CoTaskMemFree(*ppszFileName);

*ppszFileName = NULL;

return E_FAIL;

}

return S_OK;

}

STDMETHODIMP IsDirty() {

return S_FALSE;

}

STDMETHODIMP Load(LPCOLESTR pszFileName, DWORD dwMode) {

HRESULT hr;

size_t len;

OutputDebugString(L"PyShellExt::Load");

OutputDebugString(pszFileName);

hr = StringCchLength(pszFileName, STRSAFE_MAX_CCH - 1, &len);

if (FAILED(hr)) {

OutputDebugString(L"PyShellExt::Load - failed to get string length");

return hr;

}

if (target) {

CoTaskMemFree(target);

}

if (target_dir) {

CoTaskMemFree(target_dir);

}

target = (LPOLESTR)CoTaskMemAlloc(sizeof(WCHAR) * (len + 1));

if (!target) {

OutputDebugString(L"PyShellExt::Load - E_OUTOFMEMORY");

return E_OUTOFMEMORY;

}

target_dir = (LPOLESTR)CoTaskMemAlloc(sizeof(WCHAR) * (len + 1));

if (!target_dir) {

OutputDebugString(L"PyShellExt::Load - E_OUTOFMEMORY");

return E_OUTOFMEMORY;

}

hr = StringCchCopy(target, len + 1, pszFileName);

if (FAILED(hr)) {

OutputDebugString(L"PyShellExt::Load - failed to copy string");

return hr;

}

hr = StringCchCopy(target_dir, len + 1, pszFileName);

if (FAILED(hr)) {

OutputDebugString(L"PyShellExt::Load - failed to copy string");

return hr;

}

if (!PathRemoveFileSpecW(target_dir)) {

OutputDebugStringW(L"PyShellExt::Load - failed to remove filespec from target");

return E_FAIL;

}

OutputDebugString(target);

target_mode = dwMode;

OutputDebugString(L"PyShellExt::Load - S_OK");

return S_OK;

}

STDMETHODIMP Save(LPCOLESTR pszFileName, BOOL fRemember) {

return E_NOTIMPL;

}

STDMETHODIMP SaveCompleted(LPCOLESTR pszFileName) {

return E_NOTIMPL;

}

STDMETHODIMP GetClassID(CLSID *pClassID) {

*pClassID = CLSID_PyShellExt;

return S_OK;

}

};

CoCreatableClass(PyShellExt);

STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, _COM_Outptr_ void** ppv) {

return Module<InProc>::GetModule().GetClassObject(rclsid, riid, ppv);

}

STDAPI DllCanUnloadNow() {

return Module<InProc>::GetModule().Terminate() ? S_OK : S_FALSE;

}

STDAPI DllRegisterServer() {

LONG res;

SECURITY_ATTRIBUTES secattr = { sizeof(SECURITY_ATTRIBUTES), NULL, FALSE };

LPSECURITY_ATTRIBUTES psecattr = NULL;

HKEY key, ipsKey;

WCHAR modname[MAX_PATH];

DWORD modname_len;

OutputDebugString(L"PyShellExt::DllRegisterServer");

if (!hModule) {

OutputDebugString(L"PyShellExt::DllRegisterServer - module handle was not set");

return SELFREG_E_CLASS;

}

modname_len = GetModuleFileName(hModule, modname, MAX_PATH);

if (modname_len == 0 ||

(modname_len == MAX_PATH && GetLastError() == ERROR_INSUFFICIENT_BUFFER)) {

OutputDebugString(L"PyShellExt::DllRegisterServer - failed to get module file name");

return SELFREG_E_CLASS;

}

DWORD disp;

res = RegCreateKeyEx(HKEY_LOCAL_MACHINE, CLASS_SUBKEY, 0, NULL, 0,

KEY_ALL_ACCESS, psecattr, &key, &disp);

if (res == ERROR_ACCESS_DENIED) {

OutputDebugString(L"PyShellExt::DllRegisterServer - failed to write per-machine registration. Attempting per-user instead.");

res = RegCreateKeyEx(HKEY_CURRENT_USER, CLASS_SUBKEY, 0, NULL, 0,

KEY_ALL_ACCESS, psecattr, &key, &disp);

}

if (res != ERROR_SUCCESS) {

OutputDebugString(L"PyShellExt::DllRegisterServer - failed to create class key");

return SELFREG_E_CLASS;

}

res = RegCreateKeyEx(key, L"InProcServer32", 0, NULL, 0,

KEY_ALL_ACCESS, psecattr, &ipsKey, NULL);

if (res != ERROR_SUCCESS) {

RegCloseKey(key);

OutputDebugString(L"PyShellExt::DllRegisterServer - failed to create InProcServer32 key");

return SELFREG_E_CLASS;

}

res = RegSetValueEx(ipsKey, NULL, 0,

REG_SZ, (LPBYTE)modname, modname_len * sizeof(modname[0]));

if (res != ERROR_SUCCESS) {

RegCloseKey(ipsKey);

RegCloseKey(key);

OutputDebugString(L"PyShellExt::DllRegisterServer - failed to set server path");

return SELFREG_E_CLASS;

}

res = RegSetValueEx(ipsKey, L"ThreadingModel", 0,

REG_SZ, (LPBYTE)(L"Apartment"), sizeof(L"Apartment"));

RegCloseKey(ipsKey);

RegCloseKey(key);

if (res != ERROR_SUCCESS) {

OutputDebugString(L"PyShellExt::DllRegisterServer - failed to set threading model");

return SELFREG_E_CLASS;

}

SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);

OutputDebugString(L"PyShellExt::DllRegisterServer - S_OK");

return S_OK;

}

STDAPI DllUnregisterServer() {

LONG res_lm, res_cu;

res_lm = RegDeleteTree(HKEY_LOCAL_MACHINE, CLASS_SUBKEY);

if (res_lm != ERROR_SUCCESS && res_lm != ERROR_FILE_NOT_FOUND) {

OutputDebugString(L"PyShellExt::DllUnregisterServer - failed to delete per-machine registration");

return SELFREG_E_CLASS;

}

res_cu = RegDeleteTree(HKEY_CURRENT_USER, CLASS_SUBKEY);

if (res_cu != ERROR_SUCCESS && res_cu != ERROR_FILE_NOT_FOUND) {

OutputDebugString(L"PyShellExt::DllUnregisterServer - failed to delete per-user registration");

return SELFREG_E_CLASS;

}

if (res_lm == ERROR_FILE_NOT_FOUND && res_cu == ERROR_FILE_NOT_FOUND) {

OutputDebugString(L"PyShellExt::DllUnregisterServer - extension was not registered");

return SELFREG_E_CLASS;

}

SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);

OutputDebugString(L"PyShellExt::DllUnregisterServer - S_OK");

return S_OK;

}

STDAPI_(BOOL) DllMain(_In_opt_ HINSTANCE hinst, DWORD reason, _In_opt_ void*) {

if (reason == DLL_PROCESS_ATTACH) {

hModule = hinst;

cfDropDescription = RegisterClipboardFormat(CFSTR_DROPDESCRIPTION);

if (!cfDropDescription) {

OutputDebugString(L"PyShellExt::DllMain - failed to get CFSTR_DROPDESCRIPTION format");

}

cfDragWindow = RegisterClipboardFormat(L"DragWindow");

if (!cfDragWindow) {

OutputDebugString(L"PyShellExt::DllMain - failed to get DragWindow format");

}

DisableThreadLibraryCalls(hinst);

}

return TRUE;

}

cpython/PC/pyshellext.cpp at pythoncapi · pythoncapi/cpython · GitHub

Uh oh!

Expand file tree

Breadcrumbs

pyshellext.cpp

Latest commit

History

Breadcrumbs

pyshellext.cpp

File metadata and controls