📄 main.c

📁 xmlrpc,用 XML表示得远程过程调用,基于web上得远程计算
💻 C
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/*******************************************************************************
**
** main.c
**
** This file is part of the ABYSS Web server project.
**
** Copyright (C) 2000 by Moez Mahfoudh <mmoez@bigfoot.com>.
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in the
**    documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
**    derived from this software without specific prior written permission.
** 
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
**
*******************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <fcntl.h>

#ifdef ABYSS_WIN32
#include <io.h>
#else
/* Must check this
#include <sys/io.h>
*/
#endif	/* ABYSS_WIN32 */

#ifdef _UNIX
#include <sys/signal.h>
#include <sys/wait.h>
#endif

#include "abyss.h"

void Answer(TSession *r, uint16 statuscode, char *buffer)
{
	ResponseChunked(r);

	ResponseStatus(r,statuscode);

	ResponseContentType(r,"text/html");

	ResponseWrite(r);
	
	HTTPWrite(r,"<HTML><BODY>",12);
	
	HTTPWrite(r,buffer,strlen(buffer));

	HTTPWrite(r,"</BODY></HTML>",14);

	HTTPWriteEnd(r);
}

abyss_bool HandleTime(TSession *r)
{
	char z[50];
	time_t ltime;
	TDate date;

	if (strcmp(r->uri,"/time")!=0)
		return FALSE;

	if (!RequestAuth(r,"Mot de passe","moez","hello"))
		return TRUE;

	time( &ltime );
	DateFromGMT(&date,ltime);
	

	strcpy(z,"The time is ");
	DateToString(&date,z+strlen(z));

	Answer(r,200,z);

	return TRUE;
}

abyss_bool HandleDump(TSession *r)
{
	char z[50];

	if (strcmp(r->uri,"/name")!=0)
		return FALSE;

	sprintf(z,"Server name is %s", (r->server)->name );
	Answer(r,200,z);

	return TRUE;
}

abyss_bool HandleStatus(TSession *r)
{
	uint32 status;

	if (sscanf(r->uri,"/status/%d",&status)<=0)
		return FALSE;

	ResponseStatus(r,(uint16)status);

	return TRUE;
}

abyss_bool HandleMIMEType(TSession *r)
{
	char *m;

	if (strncmp(r->uri,"/mime/",6)!=0)
		return FALSE;

	m=MIMETypeFromExt(r->uri+6);
	if (!m)
		m="(none)";

	Answer(r,200,m);

	return TRUE;
}

#ifdef _UNIX
static void sigterm(int sig)
{
	TraceExit("Signal %d received. Exiting...\n",sig);
}

static void sigchld(int sig)
{
	pid_t pid;
	int status;

	/* Reap defunct children until there aren't any more. */
	for (;;)
	{
		pid = waitpid( (pid_t) -1, &status, WNOHANG );

		/* none left */
		if (pid==0)
		    break;

		if (pid<0)
		{
			/* because of ptrace */
			if (errno==EINTR)	
				continue;

			break;
		}
	}
}
#endif _UNIX

void copyright()
{
	printf("ABYSS Web Server version "SERVER_VERSION"\n(C) Moez Mahfoudh - 2000\n\n");
}

void help(char *name)
{
	copyright();
	printf("Usage: %s [-h] [-c configuration file]\n\n",name);
}

int main(int argc,char **argv)
{
	TServer srv;
	char *p,*conffile=DEFAULT_CONF_FILE;
	abyss_bool err=FALSE;
	char *name=argv[0];

	while (p=*(++argv))
	{
		if ((*p=='-') && (*(p+1)))
			if (*(p+2)=='\0')
				switch (*(p+1))
				{
				case 'c':
					argv++;
					if (*argv)
						conffile=*argv;
					else
						err=TRUE;
					break;
				case 'h':
					help(name);
					exit(0);
				default:
					err=TRUE;
				}
			else
				err=TRUE;
		else
			err=TRUE;
	};

	if (err)
	{
		help(name);
		exit(1);
	};

#ifdef ABYSS_WIN32
	copyright();
	printf("\nPress Ctrl+C to stop the server\n");
#endif

	DateInit();

	MIMETypeInit();

	ServerCreate(&srv,"HTTPServer",80,DEFAULT_DOCS,NULL);

	ConfReadServerFile(conffile,&srv);

	ServerAddHandler(&srv,HandleTime);
	ServerAddHandler(&srv,HandleDump);
	ServerAddHandler(&srv,HandleStatus);
	ServerAddHandler(&srv,HandleMIMEType);

	ServerInit(&srv);

#ifdef _UNIX
	/* Catch various termination signals. */
	signal(SIGTERM,sigterm);
	signal(SIGINT,sigterm);
	signal(SIGHUP,sigterm);
	signal(SIGUSR1,sigterm);

	/* Catch defunct children. */
	signal(SIGCHLD,sigchld);
	/* Become a daemon */
	switch (fork())
	{
	case 0:
		break;
	case -1:
	    TraceExit("Unable to become a daemon");
	default:
	    exit(0);
	};

#if !defined( _NO_USERS ) && !defined( __CYGWIN32__ )
	setsid();
	/* Change the current user if we are root */
	if (getuid()==0)
	{
		if (srv.uid==(-1))
			TraceExit("Can't run under root privileges. Please add a User option in your configuration file.");

		if (setgroups(0,NULL)==(-1))
			TraceExit("Failed to setup the group.");

		if (srv.gid!=(-1))
			if (setgid(srv.gid)==(-1))
				TraceExit("Failed to change the group.");
		
		if (setuid(srv.uid)==(-1))
			TraceExit("Failed to change the user.");
	};
#endif

	if (srv.pidfile!=(-1))
	{
		char z[16];

		sprintf(z,"%d",getpid());
		FileWrite(&srv.pidfile,z,strlen(z));
		FileClose(&srv.pidfile);
	};

#endif

	ServerRun(&srv);

	return 0;
}
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