src/HttpUpgradeProtocolAccess.cc

   1 /*
   2  * Copyright (C) 1996-2025 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 ProtocolView::ProtocolView(const char * const start, const size_t len):
  21     ProtocolView(SBuf(start, len))
  22 {
  23 }
  24
  25 ProtocolView::ProtocolView(const SBuf &proto):
  26     name(proto.substr(0, proto.find('/'))),
  27     version(proto.substr(name.length()))
  28 {
  29 }
  30
  31 std::ostream &
  32 operator <<(std::ostream &os, const ProtocolView &view)
  33 {
  34     os << view.name;
  35     if (!view.version.isEmpty())
  36         os << view.version;
  37     return os;
  38 }
  39
  40 /* HttpUpgradeProtocolAccess */
  41
  42 HttpUpgradeProtocolAccess::~HttpUpgradeProtocolAccess()
  43 {
  44     aclDestroyAccessList(&other);
  45 }
  46
  47 void
  48 HttpUpgradeProtocolAccess::configureGuard(ConfigParser &parser)
  49 {
  50     const auto rawProto = parser.NextToken();
  51     if (!rawProto)
  52         throw TextException(ToSBuf("expected a protocol name or ", ProtoOther()), Here());
  53
  54     if (ProtoOther().cmp(rawProto) == 0) {
  55         aclParseAccessLine(cfg_directive, parser, &other);
  56         return;
  57     }
  58
  59     // To preserve ACL rules checking order, to exclude inapplicable (i.e. wrong
  60     // protocol version) rules, and to keep things simple, we merge no rules.
  61     acl_access *access = nullptr;
  62     aclParseAccessLine(cfg_directive, parser, &access);
  63     if (access)
  64         namedGuards.emplace_back(rawProto, access);
  65 }
  66
  67 /* HttpUpgradeProtocolAccess::NamedGuard */
  68
  69 HttpUpgradeProtocolAccess::NamedGuard::NamedGuard(const char *rawProtocol, acl_access *acls):
  70     protocol(rawProtocol),
  71     proto(protocol),
  72     guard(acls)
  73 {
  74 }
  75
  76 HttpUpgradeProtocolAccess::NamedGuard::~NamedGuard() {
  77     aclDestroyAccessList(&guard);
  78 }
  79