Rob Shearman : wininet: Use the Content-Length header to work out how much HTTP data there is left to be read
Module: wine Branch: master Commit: ac1b527498a732f9c2a502af4278ad14c452d1a6 URL: http://source.winehq.org/git/wine.git/?a=commit;h=ac1b527498a732f9c2a502af42... Author: Rob Shearman <rob(a)codeweavers.com> Date: Thu Jan 4 18:21:49 2007 +0000 wininet: Use the Content-Length header to work out how much HTTP data there is left to be read and don't try to read any more than what is available. --- dlls/wininet/http.c | 33 +++++++++++++++++++++++---------- dlls/wininet/internet.c | 15 ++++++++++++--- dlls/wininet/internet.h | 2 ++ 3 files changed, 37 insertions(+), 13 deletions(-) diff --git a/dlls/wininet/http.c b/dlls/wininet/http.c index 336f1fb..d7e1d33 100644 --- a/dlls/wininet/http.c +++ b/dlls/wininet/http.c @@ -605,6 +605,7 @@ BOOL WINAPI HttpEndRequestW(HINTERNET hR BOOL rc = FALSE; LPWININETHTTPREQW lpwhr; INT responseLen; + DWORD dwBufferSize; TRACE("-->\n"); lpwhr = (LPWININETHTTPREQW) WININET_GetObject( hRequest ); @@ -618,6 +619,8 @@ BOOL WINAPI HttpEndRequestW(HINTERNET hR lpwhr->hdr.dwFlags |= dwFlags; lpwhr->hdr.dwContext = dwContext; + /* We appear to do nothing with lpBuffersOut.. is that correct? */ + SendAsyncCallback(&lpwhr->hdr, lpwhr->hdr.dwContext, INTERNET_STATUS_RECEIVING_RESPONSE, NULL, 0); @@ -631,18 +634,20 @@ BOOL WINAPI HttpEndRequestW(HINTERNET hR /* process headers here. Is this right? */ HTTP_ProcessHeaders(lpwhr); - /* We appear to do nothing with the buffer.. is that correct? */ + dwBufferSize = sizeof(lpwhr->dwContentLength); + if (!HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_CONTENT_LENGTH, + &lpwhr->dwContentLength,&dwBufferSize,NULL)) + lpwhr->dwContentLength = -1; if(!(lpwhr->hdr.dwFlags & INTERNET_FLAG_NO_AUTO_REDIRECT)) { - DWORD dwCode,dwCodeLength=sizeof(DWORD),dwIndex=0; - if(HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_STATUS_CODE,&dwCode,&dwCodeLength,&dwIndex) && + DWORD dwCode,dwCodeLength=sizeof(DWORD); + if(HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_STATUS_CODE,&dwCode,&dwCodeLength,NULL) && (dwCode==302 || dwCode==301)) { WCHAR szNewLocation[2048]; - DWORD dwBufferSize=2048; - dwIndex=0; - if(HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_LOCATION,szNewLocation,&dwBufferSize,&dwIndex)) + dwBufferSize=2048; + if(HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_LOCATION,szNewLocation,&dwBufferSize,NULL)) { static const WCHAR szGET[] = { 'G','E','T', 0 }; /* redirects are always GETs */ @@ -2255,6 +2260,7 @@ BOOL WINAPI HTTP_HttpSendRequestW(LPWINI char *ascii_req; loop_next = FALSE; + lpwhr->dwContentRead = 0; if (TRACE_ON(wininet)) { @@ -2311,6 +2317,8 @@ BOOL WINAPI HTTP_HttpSendRequestW(LPWINI if (bEndRequest) { + DWORD dwBufferSize; + INTERNET_SendCallback(&lpwhr->hdr, lpwhr->hdr.dwContext, INTERNET_STATUS_RECEIVING_RESPONSE, NULL, 0); @@ -2327,14 +2335,19 @@ BOOL WINAPI HTTP_HttpSendRequestW(LPWINI HTTP_ProcessHeaders(lpwhr); + dwBufferSize = sizeof(lpwhr->dwContentLength); + if (!HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_CONTENT_LENGTH, + &lpwhr->dwContentLength,&dwBufferSize,NULL)) + lpwhr->dwContentLength = -1; + if (!(lpwhr->hdr.dwFlags & INTERNET_FLAG_NO_AUTO_REDIRECT) && bSuccess) { - DWORD dwCode,dwCodeLength=sizeof(DWORD),dwIndex=0; + DWORD dwCode,dwCodeLength=sizeof(DWORD); WCHAR szNewLocation[2048]; - DWORD dwBufferSize=2048; - if (HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_STATUS_CODE,&dwCode,&dwCodeLength,&dwIndex) && + dwBufferSize=2048; + if (HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_FLAG_NUMBER|HTTP_QUERY_STATUS_CODE,&dwCode,&dwCodeLength,NULL) && (dwCode==HTTP_STATUS_REDIRECT || dwCode==HTTP_STATUS_MOVED) && - HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_LOCATION,szNewLocation,&dwBufferSize,&dwIndex)) + HTTP_HttpQueryInfoW(lpwhr,HTTP_QUERY_LOCATION,szNewLocation,&dwBufferSize,NULL)) { INTERNET_SendCallback(&lpwhr->hdr, lpwhr->hdr.dwContext, INTERNET_STATUS_REDIRECT, szNewLocation, diff --git a/dlls/wininet/internet.c b/dlls/wininet/internet.c index cef4526..a7568d4 100644 --- a/dlls/wininet/internet.c +++ b/dlls/wininet/internet.c @@ -1690,19 +1690,27 @@ static BOOL INTERNET_ReadFile(LPWININETH { BOOL retval = FALSE; int nSocket = -1; + int bytes_read; + LPWININETHTTPREQW lpwhr; /* FIXME: this should use NETCON functions! */ switch (lpwh->htype) { case WH_HHTTPREQ: - if (!NETCON_recv(&((LPWININETHTTPREQW)lpwh)->netConnection, lpBuffer, - dwNumOfBytesToRead, bWait ? MSG_WAITALL : 0, (int *)pdwNumOfBytesRead)) + lpwhr = (LPWININETHTTPREQW)lpwh; + if (!NETCON_recv(&lpwhr->netConnection, lpBuffer, + min(dwNumOfBytesToRead, lpwhr->dwContentLength - lpwhr->dwContentRead), + bWait ? MSG_WAITALL : 0, &bytes_read)) { *pdwNumOfBytesRead = 0; retval = TRUE; /* Under windows, it seems to return 0 even if nothing was read... */ } else + { + lpwhr->dwContentRead += bytes_read; + *pdwNumOfBytesRead = bytes_read; retval = TRUE; + } break; case WH_HFILE: @@ -3216,7 +3224,8 @@ BOOL WINAPI InternetQueryDataAvailable( { case WH_HHTTPREQ: if (!NETCON_recv(&lpwhr->netConnection, buffer, - 4048, MSG_PEEK, (int *)lpdwNumberOfBytesAvailble)) + min(sizeof(buffer), lpwhr->dwContentLength - lpwhr->dwContentRead), + MSG_PEEK, (int *)lpdwNumberOfBytesAvailble)) { SetLastError(ERROR_NO_MORE_FILES); retval = FALSE; diff --git a/dlls/wininet/internet.h b/dlls/wininet/internet.h index 1524139..4af22ea 100644 --- a/dlls/wininet/internet.h +++ b/dlls/wininet/internet.h @@ -197,6 +197,8 @@ typedef struct WININET_NETCONNECTION netConnection; LPWSTR lpszVersion; LPWSTR lpszStatusText; + DWORD dwContentLength; /* total number of bytes to be read */ + DWORD dwContentRead; /* bytes of the content read so far */ HTTPHEADERW *pCustHeaders; DWORD nCustHeaders; } WININETHTTPREQW, *LPWININETHTTPREQW;
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Alexandre Julliard