mirror of
https://github.com/moparisthebest/curl
synced 2024-11-13 13:05:03 -05:00
638 lines
15 KiB
C
638 lines
15 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2004, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* $Id$
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***************************************************************************/
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/* sws.c: simple (silly?) web server
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This code was originally graciously donated to the project by Juergen
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Wilke. Thanks a bunch!
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*/
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#include "setup.h" /* portability help from the lib directory */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <signal.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#ifdef _XOPEN_SOURCE_EXTENDED
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/* This define is "almost" required to build on HPUX 11 */
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#include <arpa/inet.h>
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#endif
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#include <netdb.h>
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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const char *
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spitout(FILE *stream,
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const char *main,
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const char *sub, int *size);
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#define DEFAULT_PORT 8999
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#ifndef DEFAULT_LOGFILE
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#define DEFAULT_LOGFILE "log/sws.log"
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#endif
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#define SWSVERSION "cURL test suite HTTP server/0.1"
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#define REQUEST_DUMP "log/server.input"
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#define RESPONSE_DUMP "log/server.response"
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#define TEST_DATA_PATH "data/test%d"
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enum {
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DOCNUMBER_QUIT = -6,
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DOCNUMBER_BADCONNECT = -5,
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DOCNUMBER_INTERNAL= -4,
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DOCNUMBER_CONNECT = -3,
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DOCNUMBER_WERULEZ = -2,
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DOCNUMBER_404 = -1
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};
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/* sent as reply to a QUIT */
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static const char *docquit =
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"HTTP/1.1 200 Goodbye\r\n"
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"\r\n";
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/* sent as reply to a CONNECT */
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static const char *docconnect =
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"HTTP/1.1 200 Mighty fine indeed\r\n"
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"\r\n";
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/* sent as reply to a "bad" CONNECT */
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static const char *docbadconnect =
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"HTTP/1.1 501 Forbidden you fool\r\n"
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"\r\n";
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/* send back this on 404 file not found */
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static const char *doc404 = "HTTP/1.1 404 Not Found\n"
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"Server: " SWSVERSION "\n"
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"Connection: close\n"
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"Content-Type: text/html\n"
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"\n"
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"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n"
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"<HTML><HEAD>\n"
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"<TITLE>404 Not Found</TITLE>\n"
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"</HEAD><BODY>\n"
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"<H1>Not Found</H1>\n"
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"The requested URL was not found on this server.\n"
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"<P><HR><ADDRESS>" SWSVERSION "</ADDRESS>\n" "</BODY></HTML>\n";
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#ifdef HAVE_SIGNAL
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static volatile int sigpipe;
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#endif
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static FILE *logfp;
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static void logmsg(const char *msg, ...)
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{
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time_t t = time(NULL);
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va_list ap;
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struct tm *curr_time = localtime(&t);
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char loctime[80];
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char buffer[256]; /* possible overflow if you pass in a huge string */
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va_start(ap, msg);
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vsprintf(buffer, msg, ap);
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va_end(ap);
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strcpy(loctime, asctime(curr_time));
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loctime[strlen(loctime) - 1] = '\0';
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fprintf(logfp, "%s: %d: %s\n", loctime, (int)getpid(), buffer);
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fflush(logfp);
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}
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#ifdef HAVE_SIGNAL
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static void sigpipe_handler(int sig)
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{
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(void)sig; /* prevent warning */
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sigpipe = 1;
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}
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#endif
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int ProcessRequest(char *request)
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{
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char *line=request;
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unsigned long contentlength=0;
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char chunked=FALSE;
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#define END_OF_HEADERS "\r\n\r\n"
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char *end;
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end = strstr(request, END_OF_HEADERS);
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if(!end)
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/* we don't have a complete request yet! */
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return 0;
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/* **** Persistancy ****
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*
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* If the request is a HTTP/1.0 one, we close the connection unconditionally
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* when we're done.
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*
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* If the request is a HTTP/1.1 one, we MUST check for a "Connection:"
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* header that might say "close". If it does, we close a connection when
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* this request is processed. Otherwise, we keep the connection alive for X
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* seconds.
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*/
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do {
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if(!strncasecmp("Content-Length:", line, 15)) {
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contentlength = strtol(line+15, &line, 10);
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break;
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}
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else if(!strncasecmp("Transfer-Encoding: chunked", line,
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strlen("Transfer-Encoding: chunked"))) {
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/* chunked data coming in */
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chunked = TRUE;
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}
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if(chunked) {
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if(strstr(request, "\r\n0\r\n"))
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/* end of chunks reached */
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return 1; /* done */
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else
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return 0; /* not done */
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}
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line = strchr(line, '\n');
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if(line)
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line++;
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} while(line);
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if(contentlength > 0 ) {
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if(contentlength <= strlen(end+strlen(END_OF_HEADERS)))
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return 1; /* done */
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else
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return 0; /* not complete yet */
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}
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return 1; /* done */
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}
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/* store the entire request in a file */
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void storerequest(char *reqbuf)
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{
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FILE *dump;
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dump = fopen(REQUEST_DUMP, "ab"); /* b is for windows-preparing */
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if(dump) {
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fwrite(reqbuf, 1, strlen(reqbuf), dump);
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fclose(dump);
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logmsg("Wrote request input to " REQUEST_DUMP);
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}
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else {
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logmsg("Failed to write request input to " REQUEST_DUMP);
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}
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}
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#define REQBUFSIZ 150000
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#define REQBUFSIZ_TXT "149999"
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/* very-big-path support */
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#define MAXDOCNAMELEN 140000
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#define MAXDOCNAMELEN_TXT "139999"
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#define REQUEST_KEYWORD_SIZE 256
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static int get_request(int sock, int *part, int *open)
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{
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static char reqbuf[REQBUFSIZ], doc[MAXDOCNAMELEN];
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static char request[REQUEST_KEYWORD_SIZE];
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unsigned int offset = 0;
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int prot_major, prot_minor;
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char logbuf[256];
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*part = 0; /* part zero equals none */
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*open = TRUE; /* connection should remain open and wait for more commands */
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while (offset < REQBUFSIZ) {
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int got = sread(sock, reqbuf + offset, REQBUFSIZ - offset);
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if (got <= 0) {
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if (got < 0) {
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perror("recv");
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logmsg("recv() returned error");
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return DOCNUMBER_INTERNAL;
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}
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logmsg("Connection closed by client");
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return DOCNUMBER_INTERNAL;
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}
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offset += got;
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reqbuf[offset] = 0;
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if(ProcessRequest(reqbuf))
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break;
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}
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if (offset >= REQBUFSIZ) {
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logmsg("Request buffer overflow, closing connection");
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/* dump the request to an external file anyway */
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reqbuf[REQBUFSIZ-1]=0;
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storerequest(reqbuf);
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return DOCNUMBER_INTERNAL;
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}
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reqbuf[offset]=0;
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/* dump the request to an external file */
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storerequest(reqbuf);
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if(sscanf(reqbuf, "%" REQBUFSIZ_TXT"s %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d",
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request,
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doc,
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&prot_major,
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&prot_minor) == 4) {
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char *ptr;
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int test_no=0;
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/* find the last slash */
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ptr = strrchr(doc, '/');
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/* get the number after it */
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if(ptr) {
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if((strlen(doc) + strlen(request)) < 200)
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sprintf(logbuf, "Got request: %s %s HTTP/%d.%d",
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request, doc, prot_major, prot_minor);
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else
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sprintf(logbuf, "Got a *HUGE* request HTTP/%d.%d",
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prot_major, prot_minor);
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logmsg(logbuf);
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if(!strncmp("/verifiedserver", ptr, 15)) {
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logmsg("Are-we-friendly question received");
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return DOCNUMBER_WERULEZ;
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}
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if(!strncmp("/quit", ptr, 15)) {
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logmsg("Request-to-quit received");
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return DOCNUMBER_QUIT;
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}
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ptr++; /* skip the slash */
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test_no = strtol(ptr, &ptr, 10);
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if(test_no > 10000) {
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*part = test_no % 10000;
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test_no /= 10000;
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}
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else
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*part = 0;
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sprintf(logbuf, "Found test number %d in path", test_no);
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logmsg(logbuf);
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if(strstr(reqbuf, "Authorization: Digest")) {
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/* If the client is passing this Digest-header, we set the part number
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to 1000. Not only to spice up the complexity of this, but to make
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Digest stuff to work in the test suite. */
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*part += 1000;
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logmsg("Received Digest request, sending back data %d", *part);
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}
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else if(strstr(reqbuf, "Authorization: NTLM TlRMTVNTUAAD")) {
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/* If the client is passing this type-3 NTLM header */
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*part += 1002;
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logmsg("Received NTLM type-3, sending back data %d", *part);
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}
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else if(strstr(reqbuf, "Authorization: NTLM TlRMTVNTUAAB")) {
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/* If the client is passing this type-1 NTLM header */
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*part += 1001;
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logmsg("Received NTLM type-1, sending back data %d", *part);
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}
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if(strstr(reqbuf, "Connection: close"))
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*open = FALSE; /* close connection after this request */
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}
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else {
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if(sscanf(reqbuf, "CONNECT %" MAXDOCNAMELEN_TXT "s HTTP/%d.%d",
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doc,
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&prot_major, &prot_minor) == 3) {
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sprintf(logbuf, "Receiced a CONNECT %s HTTP/%d.%d request",
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doc, prot_major, prot_minor);
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logmsg(logbuf);
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if(prot_major*10+prot_minor == 10)
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*open = FALSE; /* HTTP 1.0 closes connection by default */
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if(!strncmp(doc, "bad", 3))
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/* if the host name starts with bad, we fake an error here */
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test_no = DOCNUMBER_BADCONNECT;
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else if(!strncmp(doc, "test", 4)) {
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char *ptr = strchr(doc, ':');
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if(ptr)
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test_no = atoi(ptr+1);
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else
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test_no = DOCNUMBER_CONNECT;
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}
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else
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test_no = DOCNUMBER_CONNECT;
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}
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else {
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logmsg("Did not find test number in PATH");
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test_no = DOCNUMBER_404;
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}
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}
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return test_no;
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}
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logmsg("Got illegal request");
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fprintf(stderr, "Got illegal request\n");
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return DOCNUMBER_404;
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}
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/* returns -1 on failure */
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static int send_doc(int sock,
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int doc,
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int part_no,
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int *alive) /* keep the connection alive or not */
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{
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int written;
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int count;
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const char *buffer;
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char *ptr;
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FILE *stream;
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char *cmd=NULL;
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int cmdsize=0;
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FILE *dump;
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int persistant = TRUE;
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static char weare[256];
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char filename[256];
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char partbuf[80]="data";
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*alive = FALSE;
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if(doc < 0) {
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switch(doc) {
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case DOCNUMBER_QUIT:
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logmsg("Replying to QUIT");
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buffer = docquit;
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break;
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case DOCNUMBER_WERULEZ:
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/* we got a "friends?" question, reply back that we sure are */
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logmsg("Identifying ourselves as friends");
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sprintf(weare, "HTTP/1.1 200 OK\r\n\r\nWE ROOLZ: %d\r\n",
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(int)getpid());
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buffer = weare;
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break;
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case DOCNUMBER_INTERNAL:
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logmsg("Bailing out due to internal error");
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return -1;
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case DOCNUMBER_CONNECT:
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logmsg("Replying to CONNECT");
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buffer = docconnect;
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break;
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case DOCNUMBER_BADCONNECT:
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logmsg("Replying to a bad CONNECT");
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buffer = docbadconnect;
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break;
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case DOCNUMBER_404:
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default:
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logmsg("Replying to with a 404");
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buffer = doc404;
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break;
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}
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ptr = NULL;
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stream=NULL;
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count = strlen(buffer);
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}
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else {
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logmsg("Fetch response data, test %d part %d", doc, part_no);
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if(0 != part_no)
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sprintf(partbuf, "data%d", part_no);
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sprintf(filename, TEST_DATA_PATH, doc);
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stream=fopen(filename, "rb");
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if(!stream) {
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logmsg("Couldn't open test file");
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return 0;
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}
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else {
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buffer = spitout(stream, "reply", partbuf, &count);
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ptr = (char *)buffer;
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fclose(stream);
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}
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/* re-open the same file again */
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stream=fopen(filename, "rb");
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if(!stream) {
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logmsg("Couldn't open test file");
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return 0;
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}
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else {
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/* get the custom server control "commands" */
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cmd = (char *)spitout(stream, "reply", "postcmd", &cmdsize);
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fclose(stream);
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}
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}
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dump = fopen(RESPONSE_DUMP, "ab"); /* b is for windows-preparing */
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if(!dump) {
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logmsg("couldn't create logfile: " RESPONSE_DUMP);
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return -1;
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}
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/* If the word 'swsclose' is present anywhere in the reply chunk, the
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connection will be closed after the data has been sent to the requesting
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client... */
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if(strstr(buffer, "swsclose") || !count) {
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persistant = FALSE;
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logmsg("connection close instruction swsclose found in response");
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}
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do {
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written = swrite(sock, buffer, count);
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if (written < 0) {
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logmsg("Sending response failed and we bailed out!");
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return -1;
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}
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/* write to file as well */
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fwrite(buffer, 1, written, dump);
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count -= written;
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buffer += written;
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} while(count>0);
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fclose(dump);
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logmsg("Response sent!");
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if(ptr)
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free(ptr);
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if(cmdsize > 0 ) {
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char command[32];
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int num;
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char *ptr=cmd;
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do {
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if(2 == sscanf(ptr, "%31s %d", command, &num)) {
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if(!strcmp("wait", command))
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sleep(num); /* wait this many seconds */
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else
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logmsg("Unknown command in reply command section");
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}
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ptr = strchr(ptr, '\n');
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if(ptr)
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ptr++;
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else
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ptr = NULL;
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} while(ptr && *ptr);
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}
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if(cmd)
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free(cmd);
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*alive = persistant;
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return 0;
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}
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int main(int argc, char *argv[])
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{
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struct sockaddr_in me;
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int sock, msgsock, flag;
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unsigned short port = DEFAULT_PORT;
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const char *logfile = DEFAULT_LOGFILE;
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int part_no;
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FILE *pidfile;
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if(argc>1)
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port = atoi(argv[1]);
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logfp = fopen(logfile, "a");
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if (!logfp) {
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perror(logfile);
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exit(1);
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}
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#ifdef HAVE_SIGNAL
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signal(SIGPIPE, sigpipe_handler);
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#endif
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#ifdef HAVE_SIGINTERRUPT
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siginterrupt(SIGPIPE, 1);
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#endif
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sock = socket(AF_INET, SOCK_STREAM, 0);
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if (sock < 0) {
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perror("opening stream socket");
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fprintf(logfp, "Error opening socket -- aborting\n");
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fclose(logfp);
|
|
exit(1);
|
|
}
|
|
|
|
flag = 1;
|
|
if (setsockopt
|
|
(sock, SOL_SOCKET, SO_REUSEADDR, (const void *) &flag,
|
|
sizeof(int)) < 0) {
|
|
perror("setsockopt(SO_REUSEADDR)");
|
|
}
|
|
|
|
me.sin_family = AF_INET;
|
|
me.sin_addr.s_addr = INADDR_ANY;
|
|
me.sin_port = htons(port);
|
|
if (bind(sock, (struct sockaddr *) &me, sizeof me) < 0) {
|
|
perror("binding stream socket");
|
|
fprintf(logfp, "Error binding socket -- aborting\n");
|
|
fclose(logfp);
|
|
exit(1);
|
|
}
|
|
|
|
pidfile = fopen(".http.pid", "w");
|
|
if(pidfile) {
|
|
fprintf(pidfile, "%d\n", (int)getpid());
|
|
fclose(pidfile);
|
|
}
|
|
else
|
|
fprintf(stderr, "Couldn't write pid file\n");
|
|
|
|
/* start accepting connections */
|
|
listen(sock, 5);
|
|
|
|
while (1) {
|
|
int doc;
|
|
int open;
|
|
int alive;
|
|
|
|
msgsock = accept(sock, NULL, NULL);
|
|
|
|
if (msgsock == -1)
|
|
continue;
|
|
|
|
logmsg("New client connected");
|
|
|
|
do {
|
|
|
|
doc = get_request(msgsock, &part_no, &open);
|
|
logmsg("Received request, now send response number %d part %d",
|
|
doc, part_no);
|
|
send_doc(msgsock, doc, part_no, &alive);
|
|
|
|
if((doc < 0) && (doc != DOCNUMBER_CONNECT)) {
|
|
logmsg("special request received, no persistancy");
|
|
break;
|
|
}
|
|
if(!alive) {
|
|
logmsg("instructed to close connection after server-reply");
|
|
break;
|
|
}
|
|
|
|
if(open)
|
|
logmsg("persistant connection, awaits new request");
|
|
/* if we got a CONNECT, loop and get another request as well! */
|
|
} while(open || (doc == DOCNUMBER_CONNECT));
|
|
|
|
logmsg("Closing client connection");
|
|
sclose(msgsock);
|
|
|
|
if (doc == DOCNUMBER_QUIT)
|
|
break;
|
|
}
|
|
|
|
sclose(sock);
|
|
fclose(logfp);
|
|
|
|
return 0;
|
|
}
|
|
|