harvey/sys/src/libsunrpc/authunix.c

/*
 * This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file.
 */

#include <u.h>
#include <libc.h>
#include <thread.h>
#include <sunrpc.h>

uint
sunAuthUnixSize(SunAuthUnix *x)
{
	return 4 + sunStringSize(x->sysname) + 4 + 4 + 4 + 4*x->ng;
}
int
sunAuthUnixUnpack(uint8_t *a, uint8_t *ea, uint8_t **pa, SunAuthUnix *x)
{
	int i;

	if(sunUint32Unpack(a, ea, &a, &x->stamp) < 0) goto Err;
	if(sunStringUnpack(a, ea, &a, &x->sysname, 256) < 0) goto Err;
	if(sunUint32Unpack(a, ea, &a, &x->uid) < 0) goto Err;
	if(sunUint32Unpack(a, ea, &a, &x->gid) < 0) goto Err;
	if(sunUint32Unpack(a, ea, &a, &x->ng) < 0 || x->ng > nelem(x->g)) goto Err;
	for(i=0; i<x->ng; i++)
		if(sunUint32Unpack(a, ea, &a, &x->g[i]) < 0) goto Err;

	*pa = a;
	return 0;

Err:
	*pa = ea;
	return -1;
}
int
sunAuthUnixPack(uint8_t *a, uint8_t *ea, uint8_t **pa, SunAuthUnix *x)
{
	int i;

	if(sunUint32Pack(a, ea, &a, &x->stamp) < 0) goto Err;
	if(sunStringPack(a, ea, &a, &x->sysname, 256) < 0) goto Err;
	if(sunUint32Pack(a, ea, &a, &x->uid) < 0) goto Err;
	if(sunUint32Pack(a, ea, &a, &x->gid) < 0) goto Err;
	if(sunUint32Pack(a, ea, &a, &x->ng) < 0 || x->ng > nelem(x->g)) goto Err;
	for(i=0; i<x->ng; i++)
		if(sunUint32Pack(a, ea, &a, &x->g[i]) < 0) goto Err;

	*pa = a;
	return 0;

Err:
	*pa = ea;
	return -1;
}
void
sunAuthUnixPrint(Fmt *fmt, SunAuthUnix *x)
{
	int i;
	fmtprint(fmt, "unix %.8lux %s %lud %lud (", (uint32_t)x->stamp,
		x->sysname, (uint32_t)x->uid, (uint32_t)x->gid);
	for(i=0; i<x->ng; i++)
		fmtprint(fmt, "%s%lud", i ? " ":"", (uint32_t)x->g[i]);
	fmtprint(fmt, ")");
}