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#include <u.h>
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#include <libc.h>
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#include <authsrv.h>
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static char *pbmsg = "AS protocol botch";
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int
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_asrdresp(int fd, char *buf, int len)
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{
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	int n;
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	char error[64];
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	if(read(fd, buf, 1) != 1){
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		werrstr(pbmsg);
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		return -1;
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	}
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	n = len;
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	switch(buf[0]){
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	case AuthOK:
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		if(readn(fd, buf, len) != len){
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			werrstr(pbmsg);
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			return -1;
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		}
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		break;
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	case AuthErr:
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		if(readn(fd, error, sizeof error) != sizeof error){
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			werrstr(pbmsg);
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			return -1;
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		}
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		error[sizeof error-1] = '\0';
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		werrstr("remote: %s", error);
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		return -1;
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	case AuthOKvar:
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		if(readn(fd, error, 5) != 5){
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			werrstr(pbmsg);
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			return -1;
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		}
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		error[5] = 0;
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		n = atoi(error);
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		if(n <= 0 || n > len){
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			werrstr(pbmsg);
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			return -1;
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		}
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		memset(buf, 0, len);
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		if(readn(fd, buf, n) != n){
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			werrstr(pbmsg);
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			return -1;
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		}
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		break;
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	default:
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		werrstr(pbmsg);
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		return -1;
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	}
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	return n;
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}