src/adaptation/AccessCheck.h

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