src/HttpUpgradeProtocolAccess.cc

   1 /*
   2  * Copyright (C) 1996-2023 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 #include "squid.h"
  10 #include "acl/Acl.h"
  11 #include "acl/Gadgets.h"
  12 #include "cache_cf.h"
  13 #include "ConfigParser.h"
  14 #include "globals.h"
  15 #include "HttpUpgradeProtocolAccess.h"
  16 #include "sbuf/Stream.h"
  17
  18 #include <algorithm>
  19
  20 const SBuf HttpUpgradeProtocolAccess::ProtoOther("OTHER");
  21
  22 ProtocolView::ProtocolView(const char * const start, const size_t len):
  23     ProtocolView(SBuf(start, len))
  24 {
  25 }
  26
  27 ProtocolView::ProtocolView(const SBuf &proto):
  28     name(proto.substr(0, proto.find('/'))),
  29     version(proto.substr(name.length()))
  30 {
  31 }
  32
  33 std::ostream &
  34 operator <<(std::ostream &os, const ProtocolView &view)
  35 {
  36     os << view.name;
  37     if (!view.version.isEmpty())
  38         os << view.version;
  39     return os;
  40 }
  41
  42 /* HttpUpgradeProtocolAccess */
  43
  44 HttpUpgradeProtocolAccess::~HttpUpgradeProtocolAccess()
  45 {
  46     aclDestroyAccessList(&other);
  47 }
  48
  49 void
  50 HttpUpgradeProtocolAccess::configureGuard(ConfigParser &parser)
  51 {
  52     const auto rawProto = parser.NextToken();
  53     if (!rawProto)
  54         throw TextException(ToSBuf("expected a protocol name or ", ProtoOther), Here());
  55
  56     if (ProtoOther.cmp(rawProto) == 0) {
  57         aclParseAccessLine(cfg_directive, parser, &other);
  58         return;
  59     }
  60
  61     // To preserve ACL rules checking order, to exclude inapplicable (i.e. wrong
  62     // protocol version) rules, and to keep things simple, we merge no rules.
  63     acl_access *access = nullptr;
  64     aclParseAccessLine(cfg_directive, parser, &access);
  65     if (access)
  66         namedGuards.emplace_back(rawProto, access);
  67 }
  68
  69 /* HttpUpgradeProtocolAccess::NamedGuard */
  70
  71 HttpUpgradeProtocolAccess::NamedGuard::NamedGuard(const char *rawProtocol, acl_access *acls):
  72     protocol(rawProtocol),
  73     proto(protocol),
  74     guard(acls)
  75 {
  76 }
  77
  78 HttpUpgradeProtocolAccess::NamedGuard::~NamedGuard() {
  79     aclDestroyAccessList(&guard);
  80 }
  81