download.cpp 11.3 KB
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/* download.cpp */

/* Synchronet file download routines */

/* $Id$ */

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
 * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html		*
 *																			*
 * This program is free software; you can redistribute it and/or			*
 * modify it under the terms of the GNU General Public License				*
 * as published by the Free Software Foundation; either version 2			*
 * of the License, or (at your option) any later version.					*
 * See the GNU General Public License for more details: gpl.txt or			*
 * http://www.fsf.org/copyleft/gpl.html										*
 *																			*
 * Anonymous FTP access to the most recent released source is available at	*
 * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net	*
 *																			*
 * Anonymous CVS access to the development source and modification history	*
 * is available at cvs.synchro.net:/cvsroot/sbbs, example:					*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login			*
 *     (just hit return, no password is necessary)							*
 * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src		*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * You are encouraged to submit any modifications (preferably in Unix diff	*
 * format) via e-mail to mods@synchro.net									*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

#include "sbbs.h"

/****************************************************************************/
/* Updates downloader, uploader and downloaded file data                    */
/* Must have offset, dir and name fields filled prior to call.              */
/****************************************************************************/
void sbbs_t::downloadfile(file_t* f)
{
    char str[256],fname[13];
    int i,file;
	long length,mod;
    ulong l;
	user_t uploader;

	getfiledat(&cfg,f); /* Get current data - right after download */
	if((length=f->size)<0L)
		length=0L;
	logon_dlb+=length;  /* Update 'this call' stats */
	logon_dls++;
	bprintf(text[FileNBytesSent],f->name,ultoac(length,tmp));
	sprintf(str,"Downloaded %s from %s %s",f->name,cfg.lib[cfg.dir[f->dir]->lib]->sname
		,cfg.dir[f->dir]->sname);
	logline("D-",str);
	/****************************/
	/* Update Downloader's Info */
	/****************************/
	useron.dls=(ushort)adjustuserrec(&cfg,useron.number,U_DLS,5,1);
	useron.dlb=adjustuserrec(&cfg,useron.number,U_DLB,10,length);
	if(!(cfg.dir[f->dir]->misc&DIR_FREE) && !(useron.exempt&FLAG('D')))
		subtract_cdt(&cfg,&useron,f->cdt);
	/**************************/
	/* Update Uploader's Info */
	/**************************/
	i=matchuser(&cfg,f->uler);
	uploader.number=i;
	getuserdat(&cfg,&uploader);
	if(i && i!=useron.number && uploader.firston<f->dateuled) {
		l=f->cdt;
		if(!(cfg.dir[f->dir]->misc&DIR_CDTDL))	/* Don't give credits on d/l */
			l=0;
		if(cfg.dir[f->dir]->misc&DIR_CDTMIN && cur_cps) { /* Give min instead of cdt */
			mod=((ulong)(l*(cfg.dir[f->dir]->dn_pct/100.0))/cur_cps)/60;
			adjustuserrec(&cfg,i,U_MIN,10,mod);
			sprintf(tmp,"%lu minute",mod);
			sprintf(str,text[DownloadUserMsg]
				,!strcmp(cfg.dir[f->dir]->code,"TEMP") ? temp_file : f->name
				,!strcmp(cfg.dir[f->dir]->code,"TEMP") ? text[Partially] : nulstr
				,useron.alias,tmp); }
		else {
			mod=(ulong)(l*(cfg.dir[f->dir]->dn_pct/100.0));
			adjustuserrec(&cfg,i,U_CDT,10,mod);
			ultoac(mod,tmp);
			sprintf(str,text[DownloadUserMsg]
				,!strcmp(cfg.dir[f->dir]->code,"TEMP") ? temp_file : f->name
				,!strcmp(cfg.dir[f->dir]->code,"TEMP") ? text[Partially] : nulstr
				,useron.alias,tmp); }
		putsmsg(&cfg,i,str); }
	/*******************/
	/* Update IXB File */
	/*******************/
	f->datedled=time(NULL);
	sprintf(str,"%s%s.IXB",cfg.dir[f->dir]->data_dir,cfg.dir[f->dir]->code);
	if((file=nopen(str,O_RDWR))==-1) {
		errormsg(WHERE,ERR_OPEN,str,O_RDWR);
		return; }
	length=filelength(file);
	if(length%F_IXBSIZE) {
		close(file);
		errormsg(WHERE,ERR_LEN,str,length);
		return; }
	strcpy(fname,f->name);
	for(i=8;i<12;i++)   /* Turn FILENAME.EXT into FILENAMEEXT */
		fname[i]=fname[i+1];
	for(l=0;l<(ulong)length;l+=F_IXBSIZE) {
		read(file,str,F_IXBSIZE);      /* Look for the filename in the IXB file */
		str[11]=0;
		if(!strcmp(fname,str)) break; }
	if(l>=(ulong)length) {
		close(file);
		errormsg(WHERE,ERR_CHK,f->name,0);
		return; }
	lseek(file,l+18,SEEK_SET);
	write(file,&f->datedled,4);  /* Write the current time stamp for datedled */
	close(file);
	/*******************/
	/* Update DAT File */
	/*******************/
	f->timesdled++;
	putfiledat(&cfg,f);
	/******************************************/
	/* Update User to User index if necessary */
	/******************************************/
	if(f->dir==cfg.user_dir) {
		rmuserxfers(&cfg,0,useron.number,f->name);
		if(!getuserxfers(0,0,f->name)) { /* check if any ixt entries left */
			sprintf(str,"%s%s",f->altpath>0 && f->altpath<=cfg.altpaths ?
				cfg.altpath[f->altpath-1] : cfg.dir[f->dir]->path,unpadfname(f->name,tmp));
			remove(str);
			removefiledat(&cfg,f); } }
}

/****************************************************************************/
/* This function is called when a file is unsuccessfully downloaded.        */
/* It logs the tranfer time and checks for possible leech protocol use.     */
/****************************************************************************/
void sbbs_t::notdownloaded(ulong size, time_t start, time_t end)
{
    char str[256],tmp2[256];

	sprintf(str,"Estimated Time: %s  Transfer Time: %s"
		,sectostr(cur_cps ? size/cur_cps : 0,tmp)
		,sectostr((uint)end-start,tmp2));
	logline(nulstr,str);
	if(cfg.leech_pct && cur_cps                 /* leech detection */
		&& end-start>=cfg.leech_sec
		&& end-start>=(double)(size/cur_cps)*(double)cfg.leech_pct/100.0) {
		sprintf(str,"Possible use of leech protocol (leech=%u  downloads=%u)"
			,useron.leech+1,useron.dls);
		errorlog(str);
		useron.leech=(uchar)adjustuserrec(&cfg,useron.number,U_LEECH,2,1); }
}


/****************************************************************************/
/* Handles start and stop routines for transfer protocols                   */
/****************************************************************************/
int sbbs_t::protocol(char *cmdline, int cd)
{
	char	str[256],*p=NULL;
    int		i;
	FILE*	stream;

	sprintf(str,"%sPROTOCOL.LOG",cfg.node_dir);
	remove(str);                            /* Deletes the protocol log */
	if(useron.misc&AUTOHANG)
		autohang=1;
	else
		autohang=yesno(text[HangUpAfterXferQ]);
	if(sys_status&SS_ABORT) {				/* if ctrl-c */
		autohang=0;
		return(-1); }
	bputs(text[StartXferNow]);
	RIOSYNC(0);
	//lprintf("%s",cmdline);
	if(cd) 
		p=cfg.temp_dir;
	i=external(cmdline,EX_OUTL,p);
	if(online==ON_REMOTE)
		rioctl(IOFB);

	// Save DSZLOG to logfile
	if((stream=fnopen(NULL,str,O_RDONLY))!=NULL) {
		while(!feof(stream) && !ferror(stream)) {
			if(!fgets(str,sizeof(str)-1,stream))
				break;
			truncsp(str);
			logline(nulstr,str);
		}
		fclose(stream);
	}

	CRLF;
	if(autohang) sys_status|=SS_PAUSEOFF;	/* Pause off after download */
	return(i);
}

/****************************************************************************/
/* Invokes the timed auto-hangup after transfer routine                     */
/****************************************************************************/
void sbbs_t::autohangup()
{
    char a,c,k;

	if(online!=ON_REMOTE)
		return;
	SYNC;
	sys_status&=~SS_PAUSEOFF;		/* turn pause back on */
	rioctl(IOFI);
	if(!autohang) return;
	lncntr=0;
	bputs(text[Disconnecting]);
	attr(GREEN);
	outchar('[');
	for(c=9,a=0;c>-1 && online && !a;c--) {
		checkline();
		attr(LIGHTGRAY|HIGH);
224
		bputs(ultoa(c,tmp,10));
225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333
		attr(GREEN);
		outchar(']');
		while((k=inkey(0))!=0 && online) {
			if(toupper(k)=='H') {
				c=0;
				break; }
			if(toupper(k)=='A') {
				a=1;
				break; } }
		mswait(DELAY_AUTOHG);
		if(!a) {
			outchar(BS);
			outchar(BS); } }
	if(c==-1) {
		bputs(text[Disconnected]);
		hangup(); }
	else
		CRLF;
}

/****************************************************************************/
/* Checks dsz compatible log file for errors in transfer                    */
/* Returns 1 if the file in the struct file_t was successfuly transfered    */
/****************************************************************************/
bool sbbs_t::checkprotlog(file_t* f)
{
	char str[256],size[128];
    int file;
    FILE *stream;

	sprintf(str,"%sPROTOCOL.LOG",cfg.node_dir);
	if((stream=fnopen(&file,str,O_RDONLY))==NULL) {
		bprintf(text[FileNotSent],f->name);
		if(f->dir<cfg.total_dirs)
			sprintf(str,"Attempted to download %s (%s) from %s %s"
				,f->name,ultoac(f->size,size)
				,cfg.lib[cfg.dir[f->dir]->lib]->sname,cfg.dir[f->dir]->sname);
		else if(f->dir==cfg.total_dirs)
			strcpy(str,"Attempted to download QWK packet");
		else if(f->dir==cfg.total_dirs+1)
			sprintf(str,"Attempted to download attached file: %s",f->name);
		logline("D!",str);
		return(0); }
	unpadfname(f->name,tmp);
	if(tmp[strlen(tmp)-1]=='.')     /* DSZ log uses FILE instead of FILE. */
		tmp[strlen(tmp)-1]=0;       /* when there isn't an extension.     */
	strupr(tmp);
	while(!ferror(stream)) {
		if(!fgets(str,256,stream))
			break;
		if(str[strlen(str)-2]==CR)
			str[strlen(str)-2]=0;       /* chop off CRLF */
		strupr(str);
		if(strstr(str,tmp)) {   /* Only check for name, Bimodem doesn't put path */
	//        logline(nulstr,str); now handled by protocol()
			if(str[0]=='E' || str[0]=='L' || (str[6]==SP && str[7]=='0'))
				break;          /* E for Error or L for Lost Carrier */
			fclose(stream);     /* or only sent 0 bytes! */
			return(true); } }
	fclose(stream);
	bprintf(text[FileNotSent],f->name);
	if(f->dir<cfg.total_dirs)
		sprintf(str,"Attempted to download %s (%s) from %s %s",f->name
			,ultoac(f->size,tmp),cfg.lib[cfg.dir[f->dir]->lib]->sname,cfg.dir[f->dir]->sname);
	else
		strcpy(str,"Attempted to download QWK packet");
	logline("D!",str);
	return(false);
}



/************************************************************************/
/* Wait (for a limited period of time) for sequential dev to become 	*/
/* available for file retrieval 										*/
/************************************************************************/
void sbbs_t::seqwait(uint devnum)
{
	char loop=0;
	int i;
	time_t start;
	node_t node;

	if(!devnum)
		return;
	for(start=now=time(NULL);online && now-start<90;now=time(NULL)) {
		if(msgabort())				/* max wait ^^^^ sec */
			break;
		getnodedat(cfg.node_num,&thisnode,1);	/* open and lock this record */
		for(i=1;i<=cfg.sys_nodes;i++) {
			if(i==cfg.node_num) continue;
			getnodedat(i,&node,1);
			if((node.status==NODE_INUSE || node.status==NODE_QUIET)
				&& node.action==NODE_RFSD && node.aux==devnum) {
				putnodedat(i,&node);
				break; }
			putnodedat(i,&node); }
		if(i>cfg.sys_nodes) {
			thisnode.action=NODE_RFSD;
			thisnode.aux=devnum;
			putnodedat(cfg.node_num,&thisnode);	/* write devnum, unlock, and ret */
			return; }
		putnodedat(cfg.node_num,&thisnode);
		if(!loop)
			bprintf(text[WaitingForDeviceN],devnum);
		loop=1;
		mswait(100); }

}