#include <u.h>#include <libc.h>#include <oventi.h>#include "session.h" void vtDumpSome(Packet*); voidvtDebug(VtSession *s, char *fmt, ...){	va_list arg; 	if(!s->debug)		return; 	va_start(arg, fmt);	vfprint(2, fmt, arg);	va_end(arg);} voidvtDebugMesg(VtSession *z, Packet *p, char *s){	int op;	int tid;	int n;	uchar buf[100], *b;  	if(!z->debug)		return;	n = packetSize(p);	if(n < 2) {		fprint(2, "runt packet%s", s);		return;	}	b = packetPeek(p, buf, 0, 2);	op = b[0];	tid = b[1]; 	fprint(2, "%c%d[%d] %d", ((op&1)==0)?'R':'Q', op, tid, n);	vtDumpSome(p);	fprint(2, "%s", s);} voidvtDumpSome(Packet *pkt){	int printable;	int i, n;	char buf[200], *q, *eq;	uchar data[32], *p; 	n = packetSize(pkt);	printable = 1;	q = buf;	eq = buf + sizeof(buf);	q = seprint(q, eq, "(%d) '", n); 	if(n > sizeof(data))		n = sizeof(data);	p = packetPeek(pkt, data, 0, n);	for(i=0; i<n && printable; i++)		if((p[i]<32 && p[i] !='\n' && p[i] !='\t') || p[i]>127)				printable = 0;	if(printable) {		for(i=0; i<n; i++)			q = seprint(q, eq, "%c", p[i]);	} else {		for(i=0; i<n; i++) {			if(i>0 && i%4==0)				q = seprint(q, eq, " ");			q = seprint(q, eq, "%.2X", p[i]);		}	}	seprint(q, eq, "'");	fprint(2, "%s", buf);}