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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include <string.h>
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
int ei_decode_port(const char *buf, int *index, erlang_port *p)
{
const char *s = buf + *index;
const char *s0 = s;
const char tag = get8(s);
if (tag != ERL_PORT_EXT && tag != ERL_NEW_PORT_EXT) return -1;
if (p) {
if (get_atom(&s, p->node, NULL) < 0) return -1;
p->id = get32be(s) & 0x0fffffff /* 28 bits */;
if (tag == ERL_PORT_EXT)
p->creation = get8(s) & 0x03;
else
p->creation = get32be(s);
}
else {
if (get_atom(&s, NULL, NULL) < 0) return -1;
s += (tag == ERL_PORT_EXT ? 5 : 8);
}
*index += s-s0;
return 0;
}
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