src/adaptation/AccessCheck.h

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