ConnMark.cc
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1 /*
2  * Copyright (C) 1996-2022 The Squid Software Foundation and contributors
3  *
4  * Squid software is distributed under GPLv2+ license and includes
5  * contributions from numerous individuals and organizations.
6  * Please see the COPYING and CONTRIBUTORS files for details.
7  */
8 
9 /* DEBUG: section 28 Access Control */
10 
11 #include "squid.h"
12 #include "acl/ConnMark.h"
13 #include "acl/FilledChecklist.h"
14 #include "base/IoManip.h"
15 #include "client_side.h"
16 #include "debug/Stream.h"
17 #include "http/Stream.h"
18 #include "sbuf/Stream.h"
19 
20 bool
22 {
23  return false;
24 }
25 
26 void
28 {
29  while (const char *t = ConfigParser::strtokFile()) {
30  SBuf token(t);
31  Parser::Tokenizer tokenizer(token);
32  const auto mc = Ip::NfMarkConfig::Parse(token);
33  marks.push_back(mc);
34  debugs(28, 7, "added " << mc);
35  }
36 
37  if (marks.empty()) {
38  throw TexcHere(ToSBuf("acl ", typeString(), " requires at least one mark"));
39  }
40 }
41 
42 int
44 {
45  const auto *checklist = Filled(cl);
46  const auto conn = checklist->conn();
47 
48  if (conn && conn->clientConnection) {
49  const auto connmark = conn->clientConnection->nfConnmark;
50 
51  for (const auto &m : marks) {
52  if (m.matches(connmark)) {
53  debugs(28, 5, "found " << m << " matching " << asHex(connmark));
54  return 1;
55  }
56  debugs(28, 7, "skipped " << m << " mismatching " << asHex(connmark));
57  }
58  } else {
59  debugs(28, 7, "fails: no client connection");
60  }
61 
62  return 0;
63 }
64 
67 {
68  SBufList sl;
69  for (const auto &m : marks) {
70  sl.push_back(ToSBuf(m));
71  }
72  return sl;
73 }
74 
75 char const *
77 {
78  return "client_connection_mark";
79 }
80 
ACLFilledChecklist * Filled(ACLChecklist *checklist)
convenience and safety wrapper for dynamic_cast<ACLFilledChecklist*>
AsHex< Integer > asHex(const Integer n)
a helper to ease AsHex object creation
Definition: IoManip.h:81
#define TexcHere(msg)
legacy convenience macro; it is not difficult to type Here() now
Definition: TextException.h:59
int conn
the current server connection FD
Definition: Transport.cc:26
virtual void parse() override
parses node representation in squid.conf; dies on failures
Definition: ConnMark.cc:27
virtual SBufList dump() const override
Definition: ConnMark.cc:66
virtual char const * typeString() const override
Definition: ConnMark.cc:76
virtual bool empty() const override
Definition: ConnMark.cc:21
virtual int match(ACLChecklist *checklist) override
Matches the actual data in checklist against this ACL.
Definition: ConnMark.cc:43
static char * strtokFile()
Definition: ConfigParser.cc:64
static NfMarkConfig Parse(const SBuf &token)
parses a token and returns an object, expects a "mark[/mask]" format
Definition: NfMarkConfig.cc:32
Definition: SBuf.h:94
#define debugs(SECTION, LEVEL, CONTENT)
Definition: Stream.h:196
SBuf ToSBuf(Args &&... args)
slowly stream-prints all arguments into a freshly allocated SBuf
Definition: Stream.h:63
std::list< SBuf > SBufList
Definition: forward.h:22

 

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