| 1 | /**********************************************************************
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| 2 | *
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| 3 | * httpsend.cpp
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| 4 | * Copyright (C) 1996
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| 5 | *
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| 6 | * A component of the fnord webserver written by [email protected].
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| 7 | *
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| 8 | * Altered for use with the Greenstone digital library software by the
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| 9 | * New Zealand Digital Library Project at the University of Waikato,
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| 10 | * New Zealand.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or modify
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| 13 | * it under the terms of the GNU General Public License as published by
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| 14 | * the Free Software Foundation; either version 2 of the License, or
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| 15 | * (at your option) any later version.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful,
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| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | * GNU General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, write to the Free Software
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| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | *
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| 26 | *********************************************************************/
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| 27 |
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| 28 | #include "text_t.h"
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| 29 |
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| 30 | #include <windows.h>
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| 31 | #include <stdlib.h>
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| 32 | #include <stdio.h>
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| 33 | #include <string.h>
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| 34 | #include <memory.h>
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| 35 | #pragma hdrstop
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| 36 | #include "netio.h"
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| 37 | #include "httpreq.h"
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| 38 | #include "httpsend.h"
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| 39 |
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| 40 | //Private Function Declarations
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| 41 | /*
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| 42 | Function Name: Check IMS Date
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| 43 | Purpose: Checks the string date of an "If Modified Since" header against
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| 44 | a file date stamp.
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| 45 | Parameters:
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| 46 | FileTime - Time stamp on file
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| 47 | IMSStr - "If Modified Since" date string
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| 48 | Returns: TRUE if the file has been modified since the given date or
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| 49 | the data can not be resolved (the string to date function will log
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| 50 | any errors)
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| 51 | */
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| 52 | BOOL CheckIMSDate(SYSTEMTIME &FileTime, char *IMSStr);
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| 53 |
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| 54 | //Public Functions
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| 55 | /******************************************************************************/
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| 56 |
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| 57 | void SendHTTPError(int ErrorNum, char *ErrorTitleStr, char *ErrorDescStr,
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| 58 | RequestInfoT &RequestInfo, RequestFieldsT &RequestFields) {
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| 59 | char Header[512];
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| 60 | char Body[512];
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| 61 |
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| 62 | char ErrorNumStr[17];
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| 63 |
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| 64 | DWORD BodyLength;
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| 65 | char BodyLengthStr[17];
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| 66 |
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| 67 | int HeaderLength;
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| 68 |
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| 69 | itoa(ErrorNum, ErrorNumStr, 10);
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| 70 |
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| 71 | // Didn't find it, build the message manually
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| 72 | Body[0] = 0;
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| 73 | strcat(Body, "<HTML><HEAD><TITLE>Server Error</TITLE></HEAD><BODY>\n");
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| 74 | strcat(Body, "<H1>Error ");
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| 75 | strcat(Body, ErrorNumStr);
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| 76 | strcat(Body, ": ");
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| 77 | strcat(Body, ErrorTitleStr);
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| 78 | strcat(Body, "</H1>\n");
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| 79 | strcat(Body, ErrorDescStr);
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| 80 | strcat(Body, "\n</BODY></HTML>");
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| 81 | BodyLength = (DWORD) strlen(Body);
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| 82 |
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| 83 | //Build Header
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| 84 | Header[0] = 0;
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| 85 | //Status Line
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| 86 | strcat(Header, "HTTP/1.0 ");
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| 87 | strcat(Header, ErrorNumStr);
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| 88 | strcat(Header, " ");
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| 89 | strcat(Header, ErrorDescStr);
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| 90 | strcat(Header, "\r\n");
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| 91 | //Server
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| 92 | strcat(Header, "Server: GSDL\r\n");
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| 93 | //Content Type (assume HTML)
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| 94 | strcat(Header, "Content-Type: text/html\r\n");
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| 95 | //Content Length
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| 96 | itoa(BodyLength, BodyLengthStr, 10);
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| 97 | strcat(Header, "Content-Length: ");
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| 98 | strcat(Header, BodyLengthStr);
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| 99 | strcat(Header, "\r\n");
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| 100 | //Single CRLF to end header
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| 101 | strcat(Header, "\r\n");
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| 102 |
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| 103 | HeaderLength = strlen(Header);
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| 104 |
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| 105 | //Send header
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| 106 | SendData(RequestInfo.ClientSocket, (BYTE *) Header, strlen(Header), RequestInfo.ThreadNum);
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| 107 | //Send generated data
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| 108 | SendData(RequestInfo.ClientSocket, (BYTE *) Body, BodyLength, RequestInfo.ThreadNum);
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| 109 | }
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