src/adaptation/AccessCheck.h

   1 #ifndef SQUID_ADAPTATION__ACCESS_CHECK_H
   2 #define SQUID_ADAPTATION__ACCESS_CHECK_H
   3
   4 #include "acl/Acl.h"
   5 #include "base/AsyncJob.h"
   6 #include "adaptation/Elements.h"
   7 #include "adaptation/forward.h"
   8 #include "adaptation/Initiator.h"
   9 #include "adaptation/ServiceFilter.h"
  10
  11 class HttpRequest;
  12 class HttpReply;
  13 class ACLFilledChecklist;
  14
  15 namespace Adaptation
  16 {
  17
  18 class AccessRule;
  19
  20 // checks adaptation_access rules to find a matching adaptation service
  21 class AccessCheck: public virtual AsyncJob
  22 {
  23 public:
  24     typedef void AccessCheckCallback(ServiceGroupPointer group, void *data);
  25
  26     // use this to start async ACL checks; returns true if started
  27     static bool Start(Method method, VectPoint vp, HttpRequest *req,
  28                       HttpReply *rep, Adaptation::Initiator *initiator);
  29
  30 protected:
  31     // use Start to start adaptation checks
  32     AccessCheck(const ServiceFilter &aFilter, Adaptation::Initiator *);
  33     ~AccessCheck();
  34
  35 private:
  36     const ServiceFilter filter;
  37     CbcPointer<Adaptation::Initiator> theInitiator; ///< the job which ordered this access check
  38     ACLFilledChecklist *acl_checklist;
  39
  40     typedef int Candidate;
  41     typedef Vector<Candidate> Candidates;
  42     Candidates candidates;
  43     Candidate topCandidate() const { return *candidates.begin(); }
  44     ServiceGroupPointer topGroup() const; // may return nil
  45
  46     void callBack(const ServiceGroupPointer &g);
  47     bool isCandidate(AccessRule &r);
  48
  49 public:
  50     void checkCandidates();
  51     static void AccessCheckCallbackWrapper(allow_t, void*);
  52     void noteAnswer(allow_t answer);
  53
  54 protected:
  55     // AsyncJob API
  56     virtual void start();
  57     virtual bool doneAll() const { return false; } /// not done until mustStop
  58
  59     bool usedDynamicRules();
  60     void check();
  61
  62 private:
  63     CBDATA_CLASS2(AccessCheck);
  64 };
  65
  66 } // namespace Adaptation
  67
  68 #endif /* SQUID_ADAPTATION__ACCESS_CHECK_H */