-/*
- * Copyright (c) 1995-2004, Index Data
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2010 Index Data
* See the file LICENSE for details.
+ */
+
+/**
+ * \file ber_oid.c
+ * \brief Implements BER OID encoding and decoding
*
- * $Id: ber_oid.c,v 1.2 2004-02-11 23:49:28 adam Exp $
+ * This source file implements BER encoding and decoding of
+ * the OID type.
*/
#if HAVE_CONFIG_H
#include <config.h>
#include "odr-priv.h"
-int ber_oidc(ODR o, Odr_oid *p)
+int ber_oidc(ODR o, Odr_oid *p, int max_oid_size)
{
int len, lenp, end;
int pos, n, res, id;
odr_seterror(o, OPROTO, 18);
return 0;
}
- if (len <= 0)
+ if (len < 0)
{
odr_seterror(o, OPROTO, 19);
return 0;
return 0;
}
pos = 0;
- while (len)
- {
+ while (len)
+ {
int id = 0;
do
{
len--;
}
while (*(o->bp++) & 0X80);
+
+ if (id < 0)
+ {
+ odr_seterror(o, ODATA, 23);
+ return 0;
+ }
if (pos > 0)
p[pos++] = id;
- else
+ else
{
p[0] = id / 40;
- if (p[0] > 2)
+ if (p[0] > 2)
p[0] = 2;
- p[1] = id - p[0] * 40;
- pos = 2;
+ p[1] = id - p[0] * 40;
+ pos = 2;
+ }
+ if (pos >= max_oid_size)
+ {
+ odr_seterror(o, OPROTO, 55);
+ return 0;
}
- }
+ }
+ if (pos < 2 || p[0] < 0 || p[1] < 0)
+ {
+ odr_seterror(o, ODATA, 23);
+ return 0;
+ }
p[pos] = -1;
return 1;
case ODR_ENCODE:
lenp = odr_tell(o);
if (odr_putc(o, 0) < 0) /* dummy */
return 0;
- if (p[0] < 0 || p[1] <= 0)
+ if (p[0] < 0 || p[1] < 0)
{
odr_seterror(o, ODATA, 23);
return 0;
}
- for (pos = 1; p[pos] >= 0; pos++)
+ for (pos = 1; p[pos] != -1; pos++)
{
n = 0;
if (pos == 1)
id = p[0]*40 + p[1];
- else
+ else
id = p[pos];
do
{
return 0;
}
}
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+