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69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
#pragma once
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extern "C" {
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#include "patricia.h"
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}
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#include <list>
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#include "IPAddr.h"
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ZEEK_FORWARD_DECLARE_NAMESPACED(Val, zeek);
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ZEEK_FORWARD_DECLARE_NAMESPACED(SubNetVal, zeek);
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namespace zeek::detail {
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class PrefixTable {
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private:
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struct iterator {
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patricia_node_t* Xstack[PATRICIA_MAXBITS+1];
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patricia_node_t** Xsp;
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patricia_node_t* Xrn;
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patricia_node_t* Xnode;
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};
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public:
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PrefixTable() { tree = New_Patricia(128); delete_function = nullptr; }
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~PrefixTable() { Destroy_Patricia(tree, delete_function); }
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// Addr in network byte order. If data is zero, acts like a set.
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// Returns ptr to old data if already existing.
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// For existing items without data, returns non-nil if found.
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void* Insert(const IPAddr& addr, int width, void* data = nullptr);
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// Value may be addr or subnet.
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void* Insert(const Val* value, void* data = nullptr);
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// Returns nil if not found, pointer to data otherwise.
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// For items without data, returns non-nil if found.
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// If exact is false, performs exact rather than longest-prefix match.
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void* Lookup(const IPAddr& addr, int width, bool exact = false) const;
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void* Lookup(const Val* value, bool exact = false) const;
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// Returns list of all found matches or empty list otherwise.
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std::list<std::tuple<IPPrefix, void*>> FindAll(const IPAddr& addr, int width) const;
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std::list<std::tuple<IPPrefix, void*>> FindAll(const SubNetVal* value) const;
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// Returns pointer to data or nil if not found.
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void* Remove(const IPAddr& addr, int width);
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void* Remove(const Val* value);
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void Clear() { Clear_Patricia(tree, delete_function); }
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// Sets a function to call for each node when table is cleared/destroyed.
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void SetDeleteFunction(data_fn_t del_fn) { delete_function = del_fn; }
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iterator InitIterator();
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void* GetNext(iterator* i);
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private:
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static prefix_t* MakePrefix(const IPAddr& addr, int width);
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static IPPrefix PrefixToIPPrefix(prefix_t* p);
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patricia_tree_t* tree;
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data_fn_t delete_function;
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};
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} // namespace zeek::detail
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using PrefixTable [[deprecated("Remove in v4.1. Use zeek::detail::PrefixTable.")]] = zeek::detail::PrefixTable;
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