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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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int
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vtputstring(Packet *p, char *s)
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{
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	uchar buf[2];
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	int n;
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	if(s == nil){
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		werrstr("null string in packet");
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		return -1;
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	}
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	n = strlen(s);
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	if(n > VtMaxStringSize){
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		werrstr("string too long in packet");
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		return -1;
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	}
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	buf[0] = n>>8;
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	buf[1] = n;
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	packetappend(p, buf, 2);
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	packetappend(p, (uchar*)s, n);
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	return 0;
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}
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int
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vtgetstring(Packet *p, char **ps)
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{
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	uchar buf[2];
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	int n;
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	char *s;
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	if(packetconsume(p, buf, 2) < 0)
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		return -1;
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	n = (buf[0]<<8) + buf[1];
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	if(n > VtMaxStringSize) {
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		werrstr("string too long in packet");
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		return -1;
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	}
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	s = vtmalloc(n+1);
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	if(packetconsume(p, (uchar*)s, n) < 0){
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		vtfree(s);
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		return -1;
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	}
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	s[n] = 0;
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	*ps = s;
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	return 0;
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}
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