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modified for AtomicReadFile handling.

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This commit is contained in:
skarg
2005-06-12 01:01:30 +00:00
parent cfeffab82f
commit 2624538022
14 changed files with 402 additions and 60 deletions
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bacnet-stack/npdu.c
+51 -38
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@@ -175,7 +175,11 @@ int npdu_decode(
BACNET_NPDU_DATA *npdu_data)
{
int len = 0; // return value - number of octets loaded in this function
int i = 0; // counter
int i = 0; // counter
uint16_t src_net = 0;
uint16_t dest_net = 0;
uint8_t address_len = 0;
uint8_t mac_octet = 0;
if (npdu && npdu_data)
{
@@ -211,30 +215,35 @@ int npdu_decode(
// 1 = DNET, DLEN, and Hop Count present
// DLEN = 0 denotes broadcast MAC DADR and DADR field is absent
// DLEN > 0 specifies length of DADR field
if (dest)
if (npdu[1] & BIT5)
{
if (npdu[1] & BIT5)
len += decode_unsigned16(&npdu[len], &dest_net);
// DLEN = 0 denotes broadcast MAC DADR and DADR field is absent
// DLEN > 0 specifies length of DADR field
address_len = npdu[len++];
if (dest)
{
len += decode_unsigned16(&npdu[len], &dest->net);
// DLEN = 0 denotes broadcast MAC DADR and DADR field is absent
// DLEN > 0 specifies length of DADR field
dest->len = npdu[len++];
if (dest->len)
dest->net = dest_net;
dest->len = address_len;
}
if (address_len)
{
for (i = 0; i < address_len; i++)
{
for (i = 0; i < dest->len; i++)
{
dest->adr[i] = npdu[len++];
}
mac_octet = npdu[len++];
if (dest)
dest->adr[i] = mac_octet;
}
}
else
}
// zero out the destination address
else if (dest)
{
dest->net = 0;
dest->len = 0;
for (i = 0; i < MAX_MAC_LEN; i++)
{
dest->net = 0;
dest->len = 0;
for (i = 0; i < MAX_MAC_LEN; i++)
{
dest->adr[i] = 0;
}
dest->adr[i] = 0;
}
}
// Bit 3: Source specifier where:
@@ -242,36 +251,40 @@ int npdu_decode(
// 1 = SNET, SLEN, and SADR present
// SLEN = 0 Invalid
// SLEN > 0 specifies length of SADR field
if (src)
if (npdu[1] & BIT3)
{
if (npdu[1] & BIT3)
len += decode_unsigned16(&npdu[len], &src_net);
// SLEN = 0 denotes broadcast MAC SADR and SADR field is absent
// SLEN > 0 specifies length of SADR field
address_len = npdu[len++];
if (src)
{
len += decode_unsigned16(&npdu[len], &src->net);
// SLEN = 0 denotes broadcast MAC SADR and SADR field is absent
// SLEN > 0 specifies length of SADR field
src->len = npdu[len++];
if (src->len)
src->net = src_net;
src->len = address_len;
}
if (address_len)
{
for (i = 0; i < address_len; i++)
{
for (i = 0; i < src->len; i++)
{
src->adr[i] = npdu[len++];
}
mac_octet = npdu[len++];
if (src)
src->adr[i] = mac_octet;
}
}
else
}
else if (src)
{
src->net = 0;
src->len = 0;
for (i = 0; i < MAX_MAC_LEN; i++)
{
src->net = 0;
src->len = 0;
for (i = 0; i < MAX_MAC_LEN; i++)
{
src->adr[i] = 0;
}
src->adr[i] = 0;
}
}
// The Hop Count field shall be present only if the message is
// destined for a remote network, i.e., if DNET is present.
// This is a one-octet field that is initialized to a value of 0xff.
if (dest && dest->net)
if (dest_net)
npdu_data->hop_count = npdu[len++];
else
npdu_data->hop_count = 0;