dlls/urlmon/protocol.c

   1 /*
   2  * Copyright 2007 Misha Koshelev
   3  * Copyright 2009 Jacek Caban for CodeWeavers
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "urlmon_main.h"
  21
  22 #include "wine/debug.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(urlmon);
  25
  26 static inline HRESULT report_progress(Protocol *protocol, ULONG status_code, LPCWSTR status_text)
  27 {
  28     return IInternetProtocolSink_ReportProgress(protocol->protocol_sink, status_code, status_text);
  29 }
  30
  31 static inline HRESULT report_result(Protocol *protocol, HRESULT hres)
  32 {
  33     if (!(protocol->flags & FLAG_RESULT_REPORTED) && protocol->protocol_sink) {
  34         protocol->flags |= FLAG_RESULT_REPORTED;
  35         IInternetProtocolSink_ReportResult(protocol->protocol_sink, hres, 0, NULL);
  36     }
  37
  38     return hres;
  39 }
  40
  41 static void report_data(Protocol *protocol)
  42 {
  43     DWORD bscf;
  44
  45     if((protocol->flags & FLAG_LAST_DATA_REPORTED) || !protocol->protocol_sink)
  46         return;
  47
  48     if(protocol->flags & FLAG_FIRST_DATA_REPORTED) {
  49         bscf = BSCF_INTERMEDIATEDATANOTIFICATION;
  50     }else {
  51         protocol->flags |= FLAG_FIRST_DATA_REPORTED;
  52         bscf = BSCF_FIRSTDATANOTIFICATION;
  53     }
  54
  55     if(protocol->flags & FLAG_ALL_DATA_READ && !(protocol->flags & FLAG_LAST_DATA_REPORTED)) {
  56         protocol->flags |= FLAG_LAST_DATA_REPORTED;
  57         bscf |= BSCF_LASTDATANOTIFICATION;
  58     }
  59
  60     IInternetProtocolSink_ReportData(protocol->protocol_sink, bscf,
  61             protocol->current_position+protocol->available_bytes,
  62             protocol->content_length);
  63 }
  64
  65 static void all_data_read(Protocol *protocol)
  66 {
  67     protocol->flags |= FLAG_ALL_DATA_READ;
  68
  69     report_data(protocol);
  70     report_result(protocol, S_OK);
  71 }
  72
  73 static HRESULT start_downloading(Protocol *protocol)
  74 {
  75     HRESULT hres;
  76
  77     hres = protocol->vtbl->start_downloading(protocol);
  78     if(FAILED(hres)) {
  79         protocol_close_connection(protocol);
  80         report_result(protocol, hres);
  81         return hres;
  82     }
  83
  84     if(protocol->bindf & BINDF_NEEDFILE) {
  85         WCHAR cache_file[MAX_PATH];
  86         DWORD buflen = sizeof(cache_file);
  87
  88         if(InternetQueryOptionW(protocol->request, INTERNET_OPTION_DATAFILE_NAME, cache_file, &buflen)) {
  89             report_progress(protocol, BINDSTATUS_CACHEFILENAMEAVAILABLE, cache_file);
  90         }else {
  91             FIXME("Could not get cache file\n");
  92         }
  93     }
  94
  95     protocol->flags |= FLAG_FIRST_CONTINUE_COMPLETE;
  96     return S_OK;
  97 }
  98
  99 HRESULT protocol_syncbinding(Protocol *protocol)
 100 {
 101     BOOL res;
 102     HRESULT hres;
 103
 104     protocol->flags |= FLAG_SYNC_READ;
 105
 106     hres = start_downloading(protocol);
 107     if(FAILED(hres))
 108         return hres;
 109
 110     res = InternetQueryDataAvailable(protocol->request, &protocol->query_available, 0, 0);
 111     if(res)
 112         protocol->available_bytes = protocol->query_available;
 113     else
 114         WARN("InternetQueryDataAvailable failed: %u\n", GetLastError());
 115
 116     protocol->flags |= FLAG_FIRST_DATA_REPORTED|FLAG_LAST_DATA_REPORTED;
 117     IInternetProtocolSink_ReportData(protocol->protocol_sink, BSCF_LASTDATANOTIFICATION|BSCF_DATAFULLYAVAILABLE,
 118             protocol->available_bytes, protocol->content_length);
 119     return S_OK;
 120 }
 121
 122 static void request_complete(Protocol *protocol, INTERNET_ASYNC_RESULT *ar)
 123 {
 124     PROTOCOLDATA data;
 125
 126     TRACE("(%p)->(%p)\n", protocol, ar);
 127
 128     /* PROTOCOLDATA same as native */
 129     memset(&data, 0, sizeof(data));
 130     data.dwState = 0xf1000000;
 131
 132     if(ar->dwResult) {
 133         protocol->flags |= FLAG_REQUEST_COMPLETE;
 134
 135         if(!protocol->request) {
 136             TRACE("setting request handle %p\n", (HINTERNET)ar->dwResult);
 137             protocol->request = (HINTERNET)ar->dwResult;
 138         }
 139
 140         if(protocol->flags & FLAG_FIRST_CONTINUE_COMPLETE)
 141             data.pData = UlongToPtr(BINDSTATUS_ENDDOWNLOADCOMPONENTS);
 142         else
 143             data.pData = UlongToPtr(BINDSTATUS_DOWNLOADINGDATA);
 144
 145     }else {
 146         protocol->flags |= FLAG_ERROR;
 147         data.pData = UlongToPtr(ar->dwError);
 148     }
 149
 150     if (protocol->bindf & BINDF_FROMURLMON)
 151         IInternetProtocolSink_Switch(protocol->protocol_sink, &data);
 152     else
 153         protocol_continue(protocol, &data);
 154 }
 155
 156 static void WINAPI internet_status_callback(HINTERNET internet, DWORD_PTR context,
 157         DWORD internet_status, LPVOID status_info, DWORD status_info_len)
 158 {
 159     Protocol *protocol = (Protocol*)context;
 160
 161     switch(internet_status) {
 162     case INTERNET_STATUS_RESOLVING_NAME:
 163         TRACE("%p INTERNET_STATUS_RESOLVING_NAME\n", protocol);
 164         report_progress(protocol, BINDSTATUS_FINDINGRESOURCE, (LPWSTR)status_info);
 165         break;
 166
 167     case INTERNET_STATUS_CONNECTING_TO_SERVER: {
 168         WCHAR *info;
 169
 170         TRACE("%p INTERNET_STATUS_CONNECTING_TO_SERVER %s\n", protocol, (const char*)status_info);
 171
 172         info = heap_strdupAtoW(status_info);
 173         if(!info)
 174             return;
 175
 176         report_progress(protocol, BINDSTATUS_CONNECTING, info);
 177         heap_free(info);
 178         break;
 179     }
 180
 181     case INTERNET_STATUS_SENDING_REQUEST:
 182         TRACE("%p INTERNET_STATUS_SENDING_REQUEST\n", protocol);
 183         report_progress(protocol, BINDSTATUS_SENDINGREQUEST, (LPWSTR)status_info);
 184         break;
 185
 186     case INTERNET_STATUS_REDIRECT:
 187         TRACE("%p INTERNET_STATUS_REDIRECT\n", protocol);
 188         report_progress(protocol, BINDSTATUS_REDIRECTING, (LPWSTR)status_info);
 189         break;
 190
 191     case INTERNET_STATUS_REQUEST_COMPLETE:
 192         request_complete(protocol, status_info);
 193         break;
 194
 195     case INTERNET_STATUS_HANDLE_CREATED:
 196         TRACE("%p INTERNET_STATUS_HANDLE_CREATED\n", protocol);
 197         IInternetProtocol_AddRef(protocol->protocol);
 198         break;
 199
 200     case INTERNET_STATUS_HANDLE_CLOSING:
 201         TRACE("%p INTERNET_STATUS_HANDLE_CLOSING\n", protocol);
 202
 203         if(*(HINTERNET *)status_info == protocol->request) {
 204             protocol->request = NULL;
 205             if(protocol->protocol_sink) {
 206                 IInternetProtocolSink_Release(protocol->protocol_sink);
 207                 protocol->protocol_sink = NULL;
 208             }
 209
 210             if(protocol->bind_info.cbSize) {
 211                 ReleaseBindInfo(&protocol->bind_info);
 212                 memset(&protocol->bind_info, 0, sizeof(protocol->bind_info));
 213             }
 214         }else if(*(HINTERNET *)status_info == protocol->connection) {
 215             protocol->connection = NULL;
 216         }
 217
 218         IInternetProtocol_Release(protocol->protocol);
 219         break;
 220
 221     default:
 222         WARN("Unhandled Internet status callback %d\n", internet_status);
 223     }
 224 }
 225
 226 static HRESULT write_post_stream(Protocol *protocol)
 227 {
 228     BYTE buf[0x20000];
 229     DWORD written;
 230     ULONG size;
 231     BOOL res;
 232     HRESULT hres;
 233
 234     protocol->flags &= ~FLAG_REQUEST_COMPLETE;
 235
 236     while(1) {
 237         size = 0;
 238         hres = IStream_Read(protocol->post_stream, buf, sizeof(buf), &size);
 239         if(FAILED(hres) || !size)
 240             break;
 241         res = InternetWriteFile(protocol->request, buf, size, &written);
 242         if(!res) {
 243             FIXME("InternetWriteFile failed: %u\n", GetLastError());
 244             hres = E_FAIL;
 245             break;
 246         }
 247     }
 248
 249     if(SUCCEEDED(hres)) {
 250         IStream_Release(protocol->post_stream);
 251         protocol->post_stream = NULL;
 252
 253         hres = protocol->vtbl->end_request(protocol);
 254     }
 255
 256     if(FAILED(hres))
 257         return report_result(protocol, hres);
 258
 259     return S_OK;
 260 }
 261
 262 static HINTERNET create_internet_session(IInternetBindInfo *bind_info)
 263 {
 264     LPWSTR global_user_agent = NULL;
 265     LPOLESTR user_agent = NULL;
 266     ULONG size = 0;
 267     HINTERNET ret;
 268     HRESULT hres;
 269
 270     hres = IInternetBindInfo_GetBindString(bind_info, BINDSTRING_USER_AGENT, &user_agent, 1, &size);
 271     if(hres != S_OK || !size)
 272         global_user_agent = get_useragent();
 273
 274     ret = InternetOpenW(user_agent ? user_agent : global_user_agent, 0, NULL, NULL, INTERNET_FLAG_ASYNC);
 275     heap_free(global_user_agent);
 276     CoTaskMemFree(user_agent);
 277     if(!ret) {
 278         WARN("InternetOpen failed: %d\n", GetLastError());
 279         return NULL;
 280     }
 281
 282     InternetSetStatusCallbackW(ret, internet_status_callback);
 283     return ret;
 284 }
 285
 286 static HINTERNET internet_session;
 287
 288 HINTERNET get_internet_session(IInternetBindInfo *bind_info)
 289 {
 290     HINTERNET new_session;
 291
 292     if(internet_session)
 293         return internet_session;
 294
 295     if(!bind_info)
 296         return NULL;
 297
 298     new_session = create_internet_session(bind_info);
 299     if(new_session && InterlockedCompareExchangePointer((void**)&internet_session, new_session, NULL))
 300         InternetCloseHandle(new_session);
 301
 302     return internet_session;
 303 }
 304
 305 HRESULT protocol_start(Protocol *protocol, IInternetProtocol *prot, IUri *uri,
 306         IInternetProtocolSink *protocol_sink, IInternetBindInfo *bind_info)
 307 {
 308     DWORD request_flags;
 309     HRESULT hres;
 310
 311     protocol->protocol = prot;
 312
 313     IInternetProtocolSink_AddRef(protocol_sink);
 314     protocol->protocol_sink = protocol_sink;
 315
 316     memset(&protocol->bind_info, 0, sizeof(protocol->bind_info));
 317     protocol->bind_info.cbSize = sizeof(BINDINFO);
 318     hres = IInternetBindInfo_GetBindInfo(bind_info, &protocol->bindf, &protocol->bind_info);
 319     if(hres != S_OK) {
 320         WARN("GetBindInfo failed: %08x\n", hres);
 321         return report_result(protocol, hres);
 322     }
 323
 324     if(!(protocol->bindf & BINDF_FROMURLMON))
 325         report_progress(protocol, BINDSTATUS_DIRECTBIND, NULL);
 326
 327     if(!get_internet_session(bind_info))
 328         return report_result(protocol, INET_E_NO_SESSION);
 329
 330     request_flags = INTERNET_FLAG_KEEP_CONNECTION;
 331     if(protocol->bindf & BINDF_NOWRITECACHE)
 332         request_flags |= INTERNET_FLAG_NO_CACHE_WRITE;
 333     if(protocol->bindf & BINDF_NEEDFILE)
 334         request_flags |= INTERNET_FLAG_NEED_FILE;
 335
 336     hres = protocol->vtbl->open_request(protocol, uri, request_flags, internet_session, bind_info);
 337     if(FAILED(hres)) {
 338         protocol_close_connection(protocol);
 339         return report_result(protocol, hres);
 340     }
 341
 342     return S_OK;
 343 }
 344
 345 HRESULT protocol_continue(Protocol *protocol, PROTOCOLDATA *data)
 346 {
 347     BOOL is_start;
 348     HRESULT hres;
 349
 350     is_start = !data || data->pData == UlongToPtr(BINDSTATUS_DOWNLOADINGDATA);
 351
 352     if(!protocol->request) {
 353         WARN("Expected request to be non-NULL\n");
 354         return S_OK;
 355     }
 356
 357     if(!protocol->protocol_sink) {
 358         WARN("Expected IInternetProtocolSink pointer to be non-NULL\n");
 359         return S_OK;
 360     }
 361
 362     if(protocol->flags & FLAG_ERROR) {
 363         protocol->flags &= ~FLAG_ERROR;
 364         protocol->vtbl->on_error(protocol, PtrToUlong(data->pData));
 365         return S_OK;
 366     }
 367
 368     if(protocol->post_stream)
 369         return write_post_stream(protocol);
 370
 371     if(is_start) {
 372         hres = start_downloading(protocol);
 373         if(FAILED(hres))
 374             return S_OK;
 375     }
 376
 377     if(!data || data->pData >= UlongToPtr(BINDSTATUS_DOWNLOADINGDATA)) {
 378         if(!protocol->available_bytes) {
 379             if(protocol->query_available) {
 380                 protocol->available_bytes = protocol->query_available;
 381             }else {
 382                 BOOL res;
 383
 384                 /* InternetQueryDataAvailable may immediately fork and perform its asynchronous
 385                  * read, so clear the flag _before_ calling so it does not incorrectly get cleared
 386                  * after the status callback is called */
 387                 protocol->flags &= ~FLAG_REQUEST_COMPLETE;
 388                 res = InternetQueryDataAvailable(protocol->request, &protocol->query_available, 0, 0);
 389                 if(res) {
 390                     TRACE("available %u bytes\n", protocol->query_available);
 391                     if(!protocol->query_available) {
 392                         if(is_start) {
 393                             TRACE("empty file\n");
 394                             all_data_read(protocol);
 395                         }else {
 396                             WARN("unexpected end of file?\n");
 397                             report_result(protocol, INET_E_DOWNLOAD_FAILURE);
 398                         }
 399                         return S_OK;
 400                     }
 401                     protocol->available_bytes = protocol->query_available;
 402                 }else if(GetLastError() != ERROR_IO_PENDING) {
 403                     protocol->flags |= FLAG_REQUEST_COMPLETE;
 404                     WARN("InternetQueryDataAvailable failed: %d\n", GetLastError());
 405                     report_result(protocol, INET_E_DATA_NOT_AVAILABLE);
 406                     return S_OK;
 407                 }
 408             }
 409
 410             protocol->flags |= FLAG_REQUEST_COMPLETE;
 411         }
 412
 413         report_data(protocol);
 414     }
 415
 416     return S_OK;
 417 }
 418
 419 HRESULT protocol_read(Protocol *protocol, void *buf, ULONG size, ULONG *read_ret)
 420 {
 421     ULONG read = 0;
 422     BOOL res;
 423     HRESULT hres = S_FALSE;
 424
 425     if(protocol->flags & FLAG_ALL_DATA_READ) {
 426         *read_ret = 0;
 427         return S_FALSE;
 428     }
 429
 430     if(!(protocol->flags & FLAG_SYNC_READ) && (!(protocol->flags & FLAG_REQUEST_COMPLETE) || !protocol->available_bytes)) {
 431         *read_ret = 0;
 432         return E_PENDING;
 433     }
 434
 435     while(read < size && protocol->available_bytes) {
 436         ULONG len;
 437
 438         res = InternetReadFile(protocol->request, ((BYTE *)buf)+read,
 439                 protocol->available_bytes > size-read ? size-read : protocol->available_bytes, &len);
 440         if(!res) {
 441             WARN("InternetReadFile failed: %d\n", GetLastError());
 442             hres = INET_E_DOWNLOAD_FAILURE;
 443             report_result(protocol, hres);
 444             break;
 445         }
 446
 447         if(!len) {
 448             all_data_read(protocol);
 449             break;
 450         }
 451
 452         read += len;
 453         protocol->current_position += len;
 454         protocol->available_bytes -= len;
 455
 456         TRACE("current_position %d, available_bytes %d\n", protocol->current_position, protocol->available_bytes);
 457
 458         if(!protocol->available_bytes) {
 459             /* InternetQueryDataAvailable may immediately fork and perform its asynchronous
 460              * read, so clear the flag _before_ calling so it does not incorrectly get cleared
 461              * after the status callback is called */
 462             protocol->flags &= ~FLAG_REQUEST_COMPLETE;
 463             res = InternetQueryDataAvailable(protocol->request, &protocol->query_available, 0, 0);
 464             if(!res) {
 465                 if (GetLastError() == ERROR_IO_PENDING) {
 466                     hres = E_PENDING;
 467                 }else {
 468                     WARN("InternetQueryDataAvailable failed: %d\n", GetLastError());
 469                     hres = INET_E_DATA_NOT_AVAILABLE;
 470                     report_result(protocol, hres);
 471                 }
 472                 break;
 473             }
 474
 475             if(!protocol->query_available) {
 476                 all_data_read(protocol);
 477                 break;
 478             }
 479
 480             protocol->available_bytes = protocol->query_available;
 481         }
 482     }
 483
 484     *read_ret = read;
 485
 486     if (hres != E_PENDING)
 487         protocol->flags |= FLAG_REQUEST_COMPLETE;
 488     if(FAILED(hres))
 489         return hres;
 490
 491     return read ? S_OK : S_FALSE;
 492 }
 493
 494 HRESULT protocol_lock_request(Protocol *protocol)
 495 {
 496     if (!InternetLockRequestFile(protocol->request, &protocol->lock))
 497         WARN("InternetLockRequest failed: %d\n", GetLastError());
 498
 499     return S_OK;
 500 }
 501
 502 HRESULT protocol_unlock_request(Protocol *protocol)
 503 {
 504     if(!protocol->lock)
 505         return S_OK;
 506
 507     if(!InternetUnlockRequestFile(protocol->lock))
 508         WARN("InternetUnlockRequest failed: %d\n", GetLastError());
 509     protocol->lock = 0;
 510
 511     return S_OK;
 512 }
 513
 514 HRESULT protocol_abort(Protocol *protocol, HRESULT reason)
 515 {
 516     if(!protocol->protocol_sink)
 517         return S_OK;
 518
 519     if(protocol->flags & FLAG_RESULT_REPORTED)
 520         return INET_E_RESULT_DISPATCHED;
 521
 522     report_result(protocol, reason);
 523     return S_OK;
 524 }
 525
 526 void protocol_close_connection(Protocol *protocol)
 527 {
 528     protocol->vtbl->close_connection(protocol);
 529
 530     if(protocol->request)
 531         InternetCloseHandle(protocol->request);
 532
 533     if(protocol->connection)
 534         InternetCloseHandle(protocol->connection);
 535
 536     if(protocol->post_stream) {
 537         IStream_Release(protocol->post_stream);
 538         protocol->post_stream = NULL;
 539     }
 540
 541     protocol->flags = 0;
 542 }