Mirror/zeek
1
0
Fork 0
mirror of https://github.com/zeek/zeek.git synced 2025-10-16 21:48:21 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

Initial import of svn+ssh:://svn.icir.org/bro/trunk/bro as of r7088

Browse source
This commit is contained in:
Robin Sommer 2010-09-27 20:42:30 -07:00
commit 61757ac78b
1383 changed files with 380824 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

88
src/XDR.cc Normal file
View file

@ -0,0 +1,88 @@
// $Id: XDR.cc 6219 2008-10-01 05:39:07Z vern $
//
// See the file "COPYING" in the main distribution directory for copyright.
#include "config.h"
#include "XDR.h"
uint32 extract_XDR_uint32(const u_char*& buf, int& len)
{
if ( ! buf )
return 0;
if ( len < 4 )
{
buf = 0;
return 0;
}
uint32 bits32 = XDR_aligned(buf) ? *(uint32*) buf :
((buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]);
buf += 4;
len -= 4;
return ntohl(bits32);
}
double extract_XDR_uint64_as_double(const u_char*& buf, int& len)
{
if ( ! buf || len < 8 )
{
buf = 0;
return 0.0;
}
uint32 uhi = extract_XDR_uint32(buf, len);
uint32 ulo = extract_XDR_uint32(buf, len);
return double(uhi) * 4294967296.0 + double(ulo);
}
double extract_XDR_time(const u_char*& buf, int& len)
{
if ( ! buf || len < 8 )
{
buf = 0;
return 0.0;
}
uint32 uhi = extract_XDR_uint32(buf, len);
uint32 ulo = extract_XDR_uint32(buf, len);
return double(uhi) + double(ulo) / 1e9;
}
const u_char* extract_XDR_opaque(const u_char*& buf, int& len, int& n, int max_len)
{
n = int(extract_XDR_uint32(buf, len));
if ( ! buf )
return 0;
if ( n < 0 || n > len || n > max_len )
{ // ### Should really flag this as a different sort of error.
buf = 0;
return 0;
}
int n4 = ((n + 3) >> 2) << 2; // n rounded up to next multiple of 4
len -= n4;
const u_char* opaque = buf;
buf += n4;
return opaque;
}
uint32 skip_XDR_opaque_auth(const u_char*& buf, int& len)
{
uint32 auth_flavor = extract_XDR_uint32(buf, len);
if ( ! buf )
return 0;
int n;
(void) extract_XDR_opaque(buf, len, n, 400);
return auth_flavor;
}