src/acl/RequestHeaderStrategy.h

   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 #ifndef SQUID_SRC_ACL_REQUESTHEADERSTRATEGY_H
  10 #define SQUID_SRC_ACL_REQUESTHEADERSTRATEGY_H
  11
  12 #include "acl/Data.h"
  13 #include "acl/FilledChecklist.h"
  14 #include "acl/ParameterizedNode.h"
  15 #include "HttpRequest.h"
  16
  17 namespace Acl
  18 {
  19
  20 /// matches the value of a given request header (e.g., "browser" or "referer_regex")
  21 template <Http::HdrType header>
  22 class RequestHeaderCheck: public ParameterizedNode< ACLData<const char *> >
  23 {
  24 public:
  25     /* Acl::Node API */
  26     int match(ACLChecklist *) override;
  27     bool requiresRequest() const override {return true;}
  28 };
  29
  30 } // namespace Acl
  31
  32 template <Http::HdrType header>
  33 int
  34 Acl::RequestHeaderCheck<header>::match(ACLChecklist * const ch)
  35 {
  36     const auto checklist = Filled(ch);
  37
  38     char const *theHeader = checklist->request->header.getStr(header);
  39
  40     if (nullptr == theHeader)
  41         return 0;
  42
  43     return data->match(theHeader);
  44 }
  45
  46 #endif /* SQUID_SRC_ACL_REQUESTHEADERSTRATEGY_H */
  47