BOOL tpdu_read_connection_confirm(wStream* s, BYTE* li)
{
BYTE code;
int position;
int bytes_read = 0;
/* save the position to determine the number of bytes read */
position = Stream_GetPosition(s);
if (!tpdu_read_header(s, &code, li))
return FALSE;
if (code != X224_TPDU_CONNECTION_CONFIRM)
{
fprintf(stderr, "Error: expected X224_TPDU_CONNECTION_CONFIRM\n");
return FALSE;
}
/*
* To ensure that there are enough bytes remaining for processing
* check against the length indicator (li). Already read bytes need
* to be taken into account.
* The -1 is because li was read but isn't included in the TPDU size.
* For reference see ITU-T Rec. X.224 - 13.2.1
*/
bytes_read = (Stream_GetPosition(s) - position) - 1;
return (Stream_GetRemainingLength(s) >= (*li - bytes_read));
}
UINT16 tpdu_read_data(STREAM* s)
{
BYTE code;
UINT16 li;
li = tpdu_read_header(s, &code);
if (code != X224_TPDU_DATA)
return 0;
return li;
}
uint16
tpdu_read_data(STREAM* s)
{
uint8 code;
uint16 li;
li = tpdu_read_header(s, &code);
if (code != X224_TPDU_DATA)
return 0;
return li;
}
BYTE tpdu_read_connection_confirm(STREAM* s)
{
BYTE li;
BYTE code;
li = tpdu_read_header(s, &code);
if (code != X224_TPDU_CONNECTION_CONFIRM)
{
printf("Error: expected X224_TPDU_CONNECTION_CONFIRM\n");
return 0;
}
return li;
}
BYTE tpdu_read_connection_request(STREAM* s)
{
BYTE li;
BYTE code;
li = tpdu_read_header(s, &code);
if (code != X224_TPDU_CONNECTION_REQUEST)
{
printf("Error: expected X224_TPDU_CONNECTION_REQUEST\n");
return 0;
}
return li;
}
BOOL tpdu_read_data(wStream* s, UINT16* LI)
{
BYTE code;
BYTE li;
if (!tpdu_read_header(s, &code, &li))
return FALSE;
if (code != X224_TPDU_DATA)
return FALSE;
*LI = li;
return TRUE;
}
BOOL tpdu_read_connection_confirm(wStream* s, BYTE *li)
{
BYTE code;
if(!tpdu_read_header(s, &code, li))
return FALSE;
if (code != X224_TPDU_CONNECTION_CONFIRM)
{
fprintf(stderr, "Error: expected X224_TPDU_CONNECTION_CONFIRM\n");
return FALSE;
}
return (Stream_GetRemainingLength(s) >= *li);
}
BOOL tpdu_read_connection_request(wStream* s, BYTE *li)
{
BYTE code;
if(!tpdu_read_header(s, &code, li))
return FALSE;
if (code != X224_TPDU_CONNECTION_REQUEST)
{
fprintf(stderr, "Error: expected X224_TPDU_CONNECTION_REQUEST\n");
return FALSE;
}
return TRUE;
}
