mirror of
https://github.com/reactos/reactos.git
synced 2024-11-18 21:13:52 +00:00
492 lines
12 KiB
C++
492 lines
12 KiB
C++
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS HTTP Daemon
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* FILE: httpd.cpp
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* PURPOSE: HTTP daemon
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* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
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* REVISIONS:
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* CSH 01/09/2000 Created
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*/
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#include <debug.h>
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#include <new>
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#include <malloc.h>
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#include <string.h>
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#include <config.h>
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#include <httpd.h>
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#include <error.h>
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using namespace std;
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CHAR HttpMsg400[] = "<HEAD><TITLE>400 Bad Request</TITLE></HEAD>\n\r<BODY><H1>400 Bad Request</H1>\n\rThe request had bad syntax.<BR>\n\r</BODY>\n\r\n\r";
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CHAR HttpMsg404[] = "<HEAD><TITLE>404 Not Found</TITLE></HEAD>\n\r<BODY><H1>404 Not Found</H1>\n\rThe requested URL was not found on this server.<BR>\n\r</BODY>\n\r\n\r";
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CHAR HttpMsg405[] = "<HEAD><TITLE>405 Method Not Allowed</TITLE></HEAD>\n\r<BODY><H1>405 Method Not Allowed</H1>\n\rThe requested method is not supported on this server.<BR>\n\r</BODY>\n\r\n\r";
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CHAR HttpMsg500[] = "<HEAD><TITLE>500 Internal Server Error</TITLE></HEAD>\n\r<BODY><H1>500 Internal Server Error</H1>\n\rAn internal error occurred.<BR>\n\r</BODY>\n\r\n\r";
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CHAR HttpMsg501[] = "<HEAD><TITLE>501 Not Implemented</TITLE></HEAD>\n\r<BODY><H1>501 Not Implemented</H1>\n\rThe feature is not implemented.<BR>\n\r</BODY>\n\r\n\r";
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// *************************** CHttpClient ***************************
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// Default constructor
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CHttpClient::CHttpClient()
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{
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}
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// Constructor with server socket as starter value
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CHttpClient::CHttpClient(CServerSocket *serversocket)
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{
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ServerSocket = serversocket;
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}
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// Split URIs into its parts (ie. |http://|www.host.com|/resource|?parameters|)
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VOID CHttpClient::SplitUri(LPSTR lpsUri, LPSTR lpsHost, LPSTR lpsResource, LPSTR lpsParams)
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{
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LPSTR lpsPos;
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LPSTR lpsStr;
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UINT i;
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strcpy(lpsHost, "");
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strcpy(lpsResource, "");
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strcpy(lpsParams, "");
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lpsPos = strstr(lpsUri, "://");
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if (lpsPos != NULL)
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lpsStr = &lpsPos[3];
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else
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lpsStr = lpsUri;
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lpsPos = strstr(lpsStr, "/");
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if (lpsPos != NULL) {
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strncat(lpsHost, lpsPos, lpsPos - lpsStr);
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lpsStr = &lpsPos[1];
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lpsPos = strstr(lpsStr, "?");
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if (lpsPos != NULL) {
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strncat(lpsResource, lpsStr, lpsPos - lpsStr);
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strcpy(lpsParams, &lpsPos[1]);
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} else {
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strcpy(lpsResource, lpsStr);
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strcpy(lpsParams, "");
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}
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// Replace "/" with "\"
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for (i = 0; i < strlen(lpsResource); i++) {
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if (lpsResource[i] == '/')
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lpsResource[i] = '\\';
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}
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}
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}
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// Split resource into its parts (ie. |/path/|filename|.extension|)
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VOID CHttpClient::SplitResource(LPSTR lpsResource, LPSTR lpsPath, LPSTR lpsFilename, LPSTR lpsExtension)
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{
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INT i,len,fileptr,extptr;
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strcpy(lpsPath, "");
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strcpy(lpsFilename, "");
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strcpy(lpsExtension, "");
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len = strlen(lpsResource);
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if (len != 0) {
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if (lpsResource[len - 1] == '/') {
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// There is only a path
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strcpy(lpsPath, lpsResource);
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} else {
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// Find extension
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i = len - 1;
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while ((i >= 0) && (lpsResource[i] != '.')) i--;
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extptr = i;
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while ((i >= 0) && (lpsResource[i] != '/')) i--;
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if (i > 0) {
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// There is at least one directory in the path (besides root directory)
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fileptr = i + 1;
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strncat(lpsPath, lpsResource, fileptr);
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} else
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fileptr = 1;
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// Get filename and possibly extension
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if (extptr != 0) {
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strncat(lpsFilename, &lpsResource[fileptr], extptr - fileptr);
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// Get extension
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strncat(lpsExtension, &lpsResource[extptr + 1], len - extptr - 1);
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} else
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strncat(lpsFilename, &lpsResource[fileptr], len - fileptr);
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}
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}
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}
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// Process HTTP request
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VOID CHttpClient::ProcessRequest()
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{
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CHAR sStr[255];
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CHAR sHost[255];
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CHAR sResource[255];
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CHAR sParams[255];
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// Which method?
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switch (Parser.nMethodNo) {
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case hmGET: {
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SplitUri(Parser.sUri, sHost, sResource, sParams);
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// Default resource?
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if (strlen(sResource) == 0) {
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CIterator<LPSTR> *i = pConfiguration->GetDefaultResources()->CreateIterator();
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// FIXME: All default resources should be tried
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// Iterate through all strings
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//for (i->First(); !i->IsDone(); i->Next())
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i->First();
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if (!i->IsDone()) {
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strcat(sResource, i->CurrentItem());
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delete i;
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} else {
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// File not found
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Report("404 Not Found", HttpMsg404);
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break;
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}
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}
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strcpy(sStr, pConfiguration->GetHttpBase());
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strcat(sStr, sResource);
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SendFile(sStr);
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break;
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}
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default: {
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// Method is not implemented
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Report("501 Not Implemented", HttpMsg501);
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}
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}
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}
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// Send a file to socket
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VOID CHttpClient::SendFile(LPSTR lpsFilename)
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{
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CHAR str[255];
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CHAR str2[32];
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union BigNum {
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// unsigned __int64 Big;
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unsigned long long Big;
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struct {
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DWORD Low;
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DWORD High;
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} u;
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} nTotalBytes;
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DWORD nBytesToRead;
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DWORD nBytesRead;
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BOOL bStatus;
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// Try to open file
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hFile = CreateFileA(lpsFilename,
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GENERIC_READ, // Open for reading
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FILE_SHARE_READ, // Share for reading
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NULL, // No security
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OPEN_EXISTING, // Existing file only
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FILE_ATTRIBUTE_NORMAL, // Normal file
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NULL); // No attr. template
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if (hFile == INVALID_HANDLE_VALUE) {
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// File not found
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Report("404 Not Found", HttpMsg404);
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return;
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}
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// Get file size
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nTotalBytes.u.Low = GetFileSize(hFile, &nTotalBytes.u.High);
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if ((nTotalBytes.u.Low == 0xFFFFFFFF) && ((GetLastError()) != NO_ERROR)) {
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// Internal server error
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Report("500 Internal Server Error", HttpMsg500);
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// Close file
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CloseHandle(hFile);
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return;
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}
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// Determine buffer size
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if (nTotalBytes.Big < 65536)
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nBufferSize = 1024;
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else
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nBufferSize = 32768;
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// Allocate memory on heap
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lpsBuffer = (PCHAR) malloc(nBufferSize);
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if (lpsBuffer == NULL) {
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// Internal server error
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Report("500 Internal Server Error", HttpMsg500);
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// Close file
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CloseHandle(hFile);
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return;
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}
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SendText("HTTP/1.1 200 OK");
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SendText("Server: ROSHTTPD");
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SendText("MIME-version: 1.0");
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SendText("Content-Type: text/plain");
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SendText("Accept-Ranges: bytes");
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strcpy(str, "Content-Length: ");
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_itoa(nTotalBytes.u.Low, str2, 10);
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strcat(str, str2);
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SendText(str);
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SendText("");
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// Read and transmit file
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nTotalRead = 0;
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nFileSize = nTotalBytes.Big;
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bStop = FALSE;
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fd_set wfds;
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FD_ZERO(&wfds);
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FD_SET(Socket, &wfds);
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do {
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MessageLoop();
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if (nTotalRead + nBufferSize < nFileSize)
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nBytesToRead = nBufferSize;
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else nBytesToRead = nFileSize - nTotalRead;
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bStatus = ReadFile(hFile, lpsBuffer, nBytesToRead, &nBytesRead, NULL);
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if (bStatus) {
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select(0, NULL, &wfds, NULL, NULL);
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bStatus = (Transmit(lpsBuffer, nBytesRead) == (INT)nBytesRead);
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nTotalRead += nBytesRead;
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}
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} while ((!bStop) && (bStatus) && (nTotalRead < nFileSize));
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if (bStatus)
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SendText("");
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else
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// We can't send an error message here as we are in the process of sending a file.
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// We have to terminate the connection instead
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Close();
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// Free allocated memory
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free(lpsBuffer);
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// Close file
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CloseHandle(hFile);
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}
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// Report something to client
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VOID CHttpClient::Report(LPCSTR lpsCode, LPSTR lpsStr)
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{
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CHAR sTmp[128];
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CHAR sTmp2[16];
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strcpy(sTmp, "HTTP/1.1 ");
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strcat(sTmp, lpsCode);
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SendText(sTmp);
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SendText("Server: ROSHTTPD");
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SendText("MIME-version: 1.0");
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SendText("Content-Type: text/html");
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SendText("Accept-Ranges: bytes");
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strcpy(sTmp, "Content-Length: ");
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if (lpsStr != NULL) {
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_itoa(strlen(lpsStr), sTmp2, 10);
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strcat(sTmp, sTmp2);
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} else
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strcat(sTmp, "0");
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SendText(sTmp);
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SendText("");
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if (lpsStr != NULL)
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SendText(lpsStr);
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SendText("");
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}
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// OnRead event handler
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VOID CHttpClient::OnRead()
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{
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LONG nCount;
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nCount = Receive((LPSTR) &Parser.sBuffer[Parser.nHead],
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sizeof(Parser.sBuffer) - Parser.nHead);
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Parser.nHead += nCount;
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if (Parser.nHead >= sizeof(Parser.sBuffer))
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Parser.nHead = 0;
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if (Parser.Complete()) {
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ProcessRequest();
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}
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if (Parser.bUnknownMethod) {
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// Method Not Allowed
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Report("405 Method Not Allowed", HttpMsg405);
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// Terminate connection
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Close();
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}
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}
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/*
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// OnWrite event handler
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VOID CHttpClient::OnWrite()
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{
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DWORD nBytesToRead;
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DWORD nBytesRead;
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OutputDebugString(TS("Can write\n"));
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if (bSendingFile) {
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if (nTotalRead + nBufferSize < nFileSize)
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nBytesToRead = nBufferSize;
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else nBytesToRead = nFileSize - nTotalRead;
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bError = ReadFile(hFile, Buffer, nBytesToRead, &nBytesRead, NULL);
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if (!bError) {
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Transmit(Buffer, nBytesRead);
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nTotalRead += nBytesRead;
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}
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}
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}
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*/
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// OnClose event handler
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VOID CHttpClient::OnClose()
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{
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// Stop sending file if we are doing that now
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bStop = TRUE;
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}
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// ************************ CHttpClientThread ************************
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// Constructor with client socket as starter value
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CHttpClientThread::CHttpClientThread(LPCServerClientSocket lpSocket)
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{
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ClientSocket = lpSocket;
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}
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// Execute client thread code
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VOID CHttpClientThread::Execute()
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{
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MSG Msg;
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while (!Terminated()) {
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(( CHttpClient *) ClientSocket)->MessageLoop();
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if (PeekMessage(&Msg, 0, 0, 0, PM_REMOVE) != 0) {
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switch (Msg.message) {
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case HTTPD_START: {
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// TODO: Start thread
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break;
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}
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case HTTPD_STOP: {
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// TODO: Stop thread
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break;
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}
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default:
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DispatchMessage(&Msg);
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}
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}
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}
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if (ClientSocket != NULL) {
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delete ClientSocket;
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ClientSocket = NULL;
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}
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}
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// *************************** CHttpDaemon ***************************
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// Default constructor
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CHttpDaemon::CHttpDaemon()
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{
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State = hsStopped;
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Start();
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}
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// Default destructor
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CHttpDaemon::~CHttpDaemon()
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{
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if (State==hsRunning)
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Stop();
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}
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// Return daemon state
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HTTPdState CHttpDaemon::GetState() const
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{
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return State;
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}
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// Start HTTP daemon
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BOOL CHttpDaemon::Start()
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{
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assert(State==hsStopped);
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SetPort(pConfiguration->GetPort());
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Open();
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State = hsRunning;
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return TRUE;
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}
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// Stop HTTP daemon
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BOOL CHttpDaemon::Stop()
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{
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assert(State==hsRunning);
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Close();
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State = hsStopped;
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return TRUE;
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}
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// OnGetSocket event handler
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LPCServerClientSocket CHttpDaemon::OnGetSocket(LPCServerSocket lpServerSocket)
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{
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return new CHttpClient(lpServerSocket);
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}
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// OnGetThread event handler
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LPCServerClientThread CHttpDaemon::OnGetThread(LPCServerClientSocket lpSocket)
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{
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return new CHttpClientThread(lpSocket);
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}
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// OnAccept event handler
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VOID CHttpDaemon::OnAccept(LPCServerClientThread lpThread)
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{
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}
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// ************************ CHttpDaemonThread ************************
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// Execute daemon thread code
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VOID CHttpDaemonThread::Execute()
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{
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MSG Msg;
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try {
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Daemon = NULL;
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Daemon = new CHttpDaemon;
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while (!Terminated()) {
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Daemon->MessageLoop();
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if (PeekMessage(&Msg, 0, 0, 0, PM_REMOVE) != 0) {
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switch (Msg.message) {
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case HTTPD_START: {
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if (Daemon->GetState() == hsStopped)
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Daemon->Start();
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break;
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}
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case HTTPD_STOP: {
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if (Daemon->GetState() == hsRunning)
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Daemon->Stop();
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break;
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}
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case HTTPD_SUSPEND: {
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if (Daemon->GetState() == hsRunning){}
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// FIXME: Suspend service
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break;
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}
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case HTTPD_RESUME: {
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if (Daemon->GetState() != hsSuspended){}
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// FIXME: Resume service
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break;
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}
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default:
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DispatchMessage(&Msg);
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}
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}
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}
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delete Daemon;
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} catch (ESocket e) {
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ReportErrorStr(e.what());
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} catch (bad_alloc e) {
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ReportErrorStr(TS("Insufficient resources."));
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}
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}
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