XRootD
XrdNetPMark.cc
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1 /******************************************************************************/
2 /* */
3 /* X r d N e t P M a r k . c c */
4 /* */
5 /* (c) 2022 by the Board of Trustees of the Leland Stanford, Jr., University */
6 /* All Rights Reserved */
7 /* Produced by Andrew Hanushevsky for Stanford University under contract */
8 /* DE-AC02-76-SFO0515 with the Department of Energy */
9 /* */
10 /* This file is part of the XRootD software suite. */
11 /* */
12 /* XRootD is free software: you can redistribute it and/or modify it under */
13 /* the terms of the GNU Lesser General Public License as published by the */
14 /* Free Software Foundation, either version 3 of the License, or (at your */
15 /* option) any later version. */
16 /* */
17 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */
18 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
19 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
20 /* License for more details. */
21 /* */
22 /* You should have received a copy of the GNU Lesser General Public License */
23 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
24 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
25 /* */
26 /* The copyright holder's institutional names and contributor's names may not */
27 /* be used to endorse or promote products derived from this software without */
28 /* specific prior written permission of the institution or contributor. */
29 /******************************************************************************/
30 
31 #include <stdlib.h>
32 #include <string.h>
33 
34 #include "XrdNet/XrdNetPMark.hh"
35 
36 /******************************************************************************/
37 /* g e t E A */
38 /******************************************************************************/
39 
40 bool XrdNetPMark::getEA(const char *cgi, int &ecode, int &acode)
41 {
42 
43  ecode = acode = 0;
44 // If we have cgi, see if we can extract rge codes from there
45 //
46  if (cgi) {
47  const char *stP = strstr(cgi, "scitag.flow=");
48  if (stP) {
49  char *eol;
50  int eacode = strtol(stP + 12, &eol, 10);
51  if (*eol == '&' || *eol == 0) {
52  if (eacode >= XrdNetPMark::minTotID && eacode <= XrdNetPMark::maxTotID) {
53  ecode = eacode >> XrdNetPMark::btsActID;
54  acode = eacode & XrdNetPMark::mskActID;
55  }
56  // According to the specification, if the provided scitag.flow has an incorrect value
57  // the packets will be marked with a scitag = 0
58  return true;
59  }
60  }
61  }
62 
63  // No go
64  //
65  return false;
66 }
static const int minTotID
Definition: XrdNetPMark.hh:83
static bool getEA(const char *cgi, int &ecode, int &acode)
Definition: XrdNetPMark.cc:40
static const int btsActID
Definition: XrdNetPMark.hh:88
static const int maxTotID
Definition: XrdNetPMark.hh:84
static const int mskActID
Definition: XrdNetPMark.hh:89