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/* Copyright (c) 2004 Russ Cox */
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#include <u.h>
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#include <libc.h>
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#include <venti.h>
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#include <thread.h>
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#include <libsec.h>
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#ifndef _UNISTD_H_
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#pragma varargck type "F" VtFcall*
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#pragma varargck type "T" void
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#endif
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VtConn *z;
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int verbose;
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enum
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{
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	STACK = 8192
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};
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void
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usage(void)
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{
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	fprint(2, "usage: venti/ro [-v] [-a address] [-h address]\n");
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	threadexitsall("usage");
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}
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void
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readthread(void *v)
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{
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	char err[ERRMAX];
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	VtReq *r;
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	uchar *buf;
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	int n;
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	r = v;
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	buf = vtmalloc(r->tx.count);
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	if((n=vtread(z, r->tx.score, r->tx.blocktype, buf, r->tx.count)) < 0){
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		r->rx.msgtype = VtRerror;
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		rerrstr(err, sizeof err);
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		r->rx.error = vtstrdup(err);
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		free(buf);
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	}else{
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		r->rx.data = packetforeign(buf, n, free, buf);
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	}
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	if(verbose)
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		fprint(2, "-> %F\n", &r->rx);
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	vtrespond(r);
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}
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void
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threadmain(int argc, char **argv)
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{
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	VtReq *r;
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	VtSrv *srv;
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	char *address, *ventiaddress;
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	fmtinstall('F', vtfcallfmt);
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	fmtinstall('V', vtscorefmt);
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	address = "tcp!*!venti";
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	ventiaddress = nil;
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	ARGBEGIN{
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	case 'v':
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		verbose++;
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		break;
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	case 'a':
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		address = EARGF(usage());
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		break;
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	case 'h':
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		ventiaddress = EARGF(usage());
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		break;
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	default:
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		usage();
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	}ARGEND
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	if((z = vtdial(ventiaddress)) == nil)
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		sysfatal("vtdial %s: %r", ventiaddress);
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	if(vtconnect(z) < 0)
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		sysfatal("vtconnect: %r");
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	srv = vtlisten(address);
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	if(srv == nil)
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		sysfatal("vtlisten %s: %r", address);
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	while((r = vtgetreq(srv)) != nil){
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		r->rx.msgtype = r->tx.msgtype+1;
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		if(verbose)
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			fprint(2, "<- %F\n", &r->tx);
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		switch(r->tx.msgtype){
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		case VtTping:
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			break;
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		case VtTgoodbye:
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			break;
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		case VtTread:
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			threadcreate(readthread, r, 16384);
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			continue;
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		case VtTwrite:
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			r->rx.error = vtstrdup("read-only server");
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			r->rx.msgtype = VtRerror;
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			break;
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		case VtTsync:
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			break;
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		}
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		if(verbose)
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			fprint(2, "-> %F\n", &r->rx);
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		vtrespond(r);
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	}
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	threadexitsall(nil);
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}
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