dlls/inetcomm/internettransport.c

   1 /*
   2  * Internet Messaging Transport Base Class
   3  *
   4  * Copyright 2006 Robert Shearman for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winnt.h"
  29 #include "winsock2.h"
  30 #include "ws2tcpip.h"
  31
  32 #include "wine/debug.h"
  33
  34 #include "inetcomm_private.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(inetcomm);
  37
  38 static const WCHAR wszClassName[] = {'T','h','o','r','C','o','n','n','W','n','d','C','l','a','s','s',0};
  39
  40 #define IX_READ     (WM_USER + 0)
  41 #define IX_READLINE (WM_USER + 1)
  42 #define IX_WRITE    (WM_USER + 2)
  43
  44 HRESULT InternetTransport_Init(InternetTransport *This)
  45 {
  46     This->pCallback = NULL;
  47     This->Status = IXP_DISCONNECTED;
  48     This->Socket = -1;
  49     This->fCommandLogging = FALSE;
  50     This->fnCompletion = NULL;
  51
  52     return S_OK;
  53 }
  54
  55 HRESULT InternetTransport_GetServerInfo(InternetTransport *This, LPINETSERVER pInetServer)
  56 {
  57     if (This->Status == IXP_DISCONNECTED)
  58         return IXP_E_NOT_CONNECTED;
  59
  60     *pInetServer = This->ServerInfo;
  61     return S_OK;
  62 }
  63
  64 HRESULT InternetTransport_InetServerFromAccount(InternetTransport *This,
  65     IImnAccount *pAccount, LPINETSERVER pInetServer)
  66 {
  67     FIXME("(%p, %p): stub\n", pAccount, pInetServer);
  68     return E_NOTIMPL;
  69 }
  70
  71 HRESULT InternetTransport_Connect(InternetTransport *This,
  72     LPINETSERVER pInetServer, boolean fAuthenticate, boolean fCommandLogging)
  73 {
  74     struct addrinfo *ai;
  75     struct addrinfo *ai_cur;
  76     struct addrinfo hints;
  77     int ret;
  78     char szPort[10];
  79
  80     if (This->Status != IXP_DISCONNECTED)
  81         return IXP_E_ALREADY_CONNECTED;
  82
  83     This->ServerInfo = *pInetServer;
  84     This->fCommandLogging = fCommandLogging;
  85
  86     This->hwnd = CreateWindowW(wszClassName, wszClassName, 0, 0, 0, 0, 0, NULL, NULL, NULL, 0);
  87     if (!This->hwnd)
  88         return HRESULT_FROM_WIN32(GetLastError());
  89     SetWindowLongPtrW(This->hwnd, GWLP_USERDATA, (LONG_PTR)This);
  90
  91     hints.ai_flags          = 0;
  92     hints.ai_family         = PF_UNSPEC;
  93     hints.ai_socktype       = SOCK_STREAM;
  94     hints.ai_protocol       = IPPROTO_TCP;
  95     hints.ai_addrlen        = 0;
  96     hints.ai_addr           = NULL;
  97     hints.ai_canonname      = NULL;
  98     hints.ai_next           = NULL;
  99
 100     snprintf(szPort, sizeof(szPort), "%d", (unsigned short)pInetServer->dwPort);
 101
 102     InternetTransport_ChangeStatus(This, IXP_FINDINGHOST);
 103
 104     ret = getaddrinfo(pInetServer->szServerName, szPort, &hints, &ai);
 105     if (ret)
 106     {
 107         ERR("getaddrinfo failed: %d\n", ret);
 108         return IXP_E_CANT_FIND_HOST;
 109     }
 110
 111     for (ai_cur = ai; ai_cur; ai_cur = ai->ai_next)
 112     {
 113         int so;
 114
 115         if (TRACE_ON(inetcomm))
 116         {
 117             char host[256];
 118             char service[256];
 119             getnameinfo(ai_cur->ai_addr, ai_cur->ai_addrlen,
 120                 host, sizeof(host), service, sizeof(service),
 121                 NI_NUMERICHOST | NI_NUMERICSERV);
 122             TRACE("trying %s:%s\n", host, service);
 123         }
 124
 125         InternetTransport_ChangeStatus(This, IXP_CONNECTING);
 126
 127         so = socket(ai_cur->ai_family, ai_cur->ai_socktype, ai_cur->ai_protocol);
 128         if (so == -1)
 129         {
 130             WARN("socket() failed\n");
 131             continue;
 132         }
 133         This->Socket = so;
 134
 135         /* FIXME: set to async */
 136
 137         if (0 > connect(This->Socket, ai_cur->ai_addr, ai_cur->ai_addrlen))
 138         {
 139             WARN("connect() failed\n");
 140             closesocket(This->Socket);
 141             continue;
 142         }
 143         InternetTransport_ChangeStatus(This, IXP_CONNECTED);
 144
 145         /* FIXME: call WSAAsyncSelect */
 146
 147         freeaddrinfo(ai);
 148         TRACE("connected\n");
 149         return S_OK;
 150     }
 151
 152     freeaddrinfo(ai);
 153
 154     return IXP_E_CANT_FIND_HOST;
 155 }
 156
 157 HRESULT InternetTransport_HandsOffCallback(InternetTransport *This)
 158 {
 159     if (!This->pCallback)
 160         return S_FALSE;
 161
 162     ITransportCallback_Release(This->pCallback);
 163     This->pCallback = NULL;
 164
 165     return S_OK;
 166 }
 167
 168 HRESULT InternetTransport_DropConnection(InternetTransport *This)
 169 {
 170     int ret;
 171
 172     if (This->Status == IXP_DISCONNECTED)
 173         return IXP_E_NOT_CONNECTED;
 174
 175     ret = shutdown(This->Socket, SD_BOTH);
 176
 177     ret = closesocket(This->Socket);
 178
 179     DestroyWindow(This->hwnd);
 180     This->hwnd = NULL;
 181
 182     InternetTransport_ChangeStatus(This, IXP_DISCONNECTED);
 183
 184     return S_OK;
 185 }
 186
 187 HRESULT InternetTransport_GetStatus(InternetTransport *This,
 188     IXPSTATUS *pCurrentStatus)
 189 {
 190     *pCurrentStatus = This->Status;
 191     return S_OK;
 192 }
 193
 194 HRESULT InternetTransport_ChangeStatus(InternetTransport *This, IXPSTATUS Status)
 195 {
 196     This->Status = Status;
 197     if (This->pCallback)
 198         ITransportCallback_OnStatus(This->pCallback, Status,
 199             (IInternetTransport *)&This->u.vtbl);
 200     return S_OK;
 201 }
 202
 203 HRESULT InternetTransport_Read(InternetTransport *This, int cbBuffer,
 204     INETXPORT_COMPLETION_FUNCTION fnCompletion)
 205 {
 206     if (This->Status == IXP_DISCONNECTED)
 207         return IXP_E_NOT_CONNECTED;
 208
 209     if (This->fnCompletion)
 210         return IXP_E_BUSY;
 211
 212     This->fnCompletion = fnCompletion;
 213
 214     This->cbBuffer = cbBuffer;
 215     This->pBuffer = HeapAlloc(GetProcessHeap(), 0, This->cbBuffer);
 216     This->iCurrentBufferOffset = 0;
 217
 218     if (WSAAsyncSelect(This->Socket, This->hwnd, IX_READ, FD_READ) == SOCKET_ERROR)
 219     {
 220         ERR("WSAAsyncSelect failed with error %d\n", WSAGetLastError());
 221         /* FIXME: handle error */
 222     }
 223     return S_OK;
 224 }
 225
 226 HRESULT InternetTransport_ReadLine(InternetTransport *This,
 227     INETXPORT_COMPLETION_FUNCTION fnCompletion)
 228 {
 229     if (This->Status == IXP_DISCONNECTED)
 230         return IXP_E_NOT_CONNECTED;
 231
 232     if (This->fnCompletion)
 233         return IXP_E_BUSY;
 234
 235     This->fnCompletion = fnCompletion;
 236
 237     This->cbBuffer = 1024;
 238     This->pBuffer = HeapAlloc(GetProcessHeap(), 0, This->cbBuffer);
 239     This->iCurrentBufferOffset = 0;
 240
 241     if (WSAAsyncSelect(This->Socket, This->hwnd, IX_READLINE, FD_READ) == SOCKET_ERROR)
 242     {
 243         ERR("WSAAsyncSelect failed with error %d\n", WSAGetLastError());
 244         /* FIXME: handle error */
 245     }
 246     return S_OK;
 247 }
 248
 249 HRESULT InternetTransport_Write(InternetTransport *This, const char *pvData,
 250     int cbSize, INETXPORT_COMPLETION_FUNCTION fnCompletion)
 251 {
 252     int ret;
 253
 254     if (This->Status == IXP_DISCONNECTED)
 255         return IXP_E_NOT_CONNECTED;
 256
 257     if (This->fnCompletion)
 258         return IXP_E_BUSY;
 259
 260     /* FIXME: do this asynchronously */
 261     ret = send(This->Socket, pvData, cbSize, 0);
 262     if (ret == SOCKET_ERROR)
 263     {
 264         ERR("send failed with error %d\n", WSAGetLastError());
 265         /* FIXME: handle error */
 266     }
 267
 268     fnCompletion((IInternetTransport *)&This->u.vtbl, NULL, 0);
 269
 270     return S_OK;
 271 }
 272
 273 static LRESULT CALLBACK InternetTransport_WndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 274 {
 275     if (uMsg == IX_READ)
 276     {
 277         InternetTransport *This = (InternetTransport *)GetWindowLongPtrW(hwnd, GWLP_USERDATA);
 278
 279         /* no work to do */
 280         if (!This->fnCompletion)
 281             return 0;
 282
 283         while (This->iCurrentBufferOffset < This->cbBuffer)
 284         {
 285             if (recv(This->Socket, &This->pBuffer[This->iCurrentBufferOffset], 1, 0) <= 0)
 286             {
 287                 if (WSAGetLastError() == WSAEWOULDBLOCK)
 288                     break;
 289
 290                 ERR("recv failed with error %d\n", WSAGetLastError());
 291                 /* FIXME: handle error */
 292             }
 293
 294             This->iCurrentBufferOffset++;
 295         }
 296         if (This->iCurrentBufferOffset == This->cbBuffer)
 297         {
 298             INETXPORT_COMPLETION_FUNCTION fnCompletion = This->fnCompletion;
 299             char *pBuffer;
 300
 301             This->fnCompletion = NULL;
 302             pBuffer = This->pBuffer;
 303             This->pBuffer = NULL;
 304             fnCompletion((IInternetTransport *)&This->u.vtbl, pBuffer,
 305                 This->iCurrentBufferOffset);
 306             HeapFree(GetProcessHeap(), 0, pBuffer);
 307             return 0;
 308         }
 309
 310         if (WSAAsyncSelect(This->Socket, hwnd, uMsg, FD_READ) == SOCKET_ERROR)
 311         {
 312             ERR("WSAAsyncSelect failed with error %d\n", WSAGetLastError());
 313             /* FIXME: handle error */
 314         }
 315         return 0;
 316     }
 317     else if (uMsg == IX_READLINE)
 318     {
 319         InternetTransport *This = (InternetTransport *)GetWindowLongPtrW(hwnd, GWLP_USERDATA);
 320
 321         /* no work to do */
 322         if (!This->fnCompletion)
 323             return 0;
 324
 325         while (This->iCurrentBufferOffset < This->cbBuffer - 1)
 326         {
 327             struct timeval tv;
 328             fd_set infd;
 329
 330             if (recv(This->Socket, &This->pBuffer[This->iCurrentBufferOffset], 1, 0) <= 0)
 331             {
 332                 if (WSAGetLastError() == WSAEWOULDBLOCK)
 333                     break;
 334
 335                 ERR("recv failed with error %d\n", WSAGetLastError());
 336                 /* FIXME: handle error */
 337                 return 0;
 338             }
 339
 340             if (This->pBuffer[This->iCurrentBufferOffset] == '\n')
 341             {
 342                 INETXPORT_COMPLETION_FUNCTION fnCompletion = This->fnCompletion;
 343                 char *pBuffer;
 344
 345                 This->fnCompletion = NULL;
 346                 This->pBuffer[This->iCurrentBufferOffset++] = '\0';
 347                 pBuffer = This->pBuffer;
 348                 This->pBuffer = NULL;
 349
 350                 fnCompletion((IInternetTransport *)&This->u.vtbl, pBuffer,
 351                     This->iCurrentBufferOffset);
 352
 353                 HeapFree(GetProcessHeap(), 0, pBuffer);
 354                 return 0;
 355             }
 356             if (This->pBuffer[This->iCurrentBufferOffset] != '\r')
 357                 This->iCurrentBufferOffset++;
 358
 359             FD_ZERO(&infd);
 360             FD_SET(This->Socket, &infd);
 361             tv.tv_sec = 0;
 362             tv.tv_usec = 0;
 363         }
 364         if (This->iCurrentBufferOffset == This->cbBuffer - 1)
 365             return 0;
 366
 367         if (WSAAsyncSelect(This->Socket, hwnd, uMsg, FD_READ) == SOCKET_ERROR)
 368         {
 369             ERR("WSAAsyncSelect failed with error %d\n", WSAGetLastError());
 370             /* FIXME: handle error */
 371         }
 372         return 0;
 373     }
 374     else
 375         return DefWindowProcW(hwnd, uMsg, wParam, lParam);
 376 }
 377
 378 BOOL InternetTransport_RegisterClass(HINSTANCE hInstance)
 379 {
 380     WNDCLASSW cls;
 381     WSADATA wsadata;
 382
 383     if (WSAStartup(MAKEWORD(2, 2), &wsadata))
 384         return FALSE;
 385
 386     memset(&cls, 0, sizeof(cls));
 387     cls.hInstance     = hInstance;
 388     cls.lpfnWndProc   = InternetTransport_WndProc;
 389     cls.lpszClassName = wszClassName;
 390
 391     return RegisterClassW(&cls);
 392 }
 393
 394 void InternetTransport_UnregisterClass(HINSTANCE hInstance)
 395 {
 396     UnregisterClassW(wszClassName, hInstance);
 397     WSACleanup();
 398 }