BoolOps.h

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/*
 * Copyright (C) 1996-2023 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#ifndef SQUID_ACL_LOGIC_H
#define SQUID_ACL_LOGIC_H
 
#include "acl/InnerNode.h"
 
/* ACLs defined here are used internally to construct an ACL expression tree.
 * They cannot be specified directly in squid.conf because squid.conf ACLs are
 * more complex than (and are implemented using) these operator-like classes.*/
 
namespace Acl
{
 
class NotNode: public InnerNode
{
    MEMPROXY_CLASS(NotNode);
 
public:
    explicit NotNode(ACL *acl);
 
private:
    /* ACL API */
    char const *typeString() const override;
    void parse() override;
    SBufList dump() const override;
 
    /* Acl::InnerNode API */
    int doMatch(ACLChecklist *checklist, Nodes::const_iterator start) const override;
};
 
class AndNode: public InnerNode
{
    MEMPROXY_CLASS(AndNode);
 
public:
    /* ACL API */
    char const *typeString() const override;
    void parse() override;
 
private:
    int doMatch(ACLChecklist *checklist, Nodes::const_iterator start) const override;
};
 
class OrNode: public InnerNode
{
    MEMPROXY_CLASS(OrNode);
 
public:
    virtual bool bannedAction(ACLChecklist *, Nodes::const_iterator) const;
 
    /* ACL API */
    char const *typeString() const override;
    void parse() override;
 
protected:
    mutable Nodes::const_iterator lastMatch_;
 
private:
    int doMatch(ACLChecklist *checklist, Nodes::const_iterator start) const override;
};
 
} // namespace Acl
 
#endif /* SQUID_ACL_LOGIC_H */