decode_as_model.h

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#ifndef DECODE_AS_MODEL_H
#define DECODE_AS_MODEL_H
 
#include <config.h>
 
#include <QAbstractItemModel>
#include <QList>
 
#include <epan/cfile.h>
 
#include <epan/packet.h>
#include <epan/decode_as.h>
#include <epan/dissectors/packet-dcerpc.h>

class DecodeAsItem
{
public:
    DecodeAsItem(const char *table_name = NULL, const void *selector = NULL);

    DecodeAsItem(const decode_as_t *entry, const void *selector = NULL);

    virtual ~DecodeAsItem();

    const char* tableName() const { return tableName_; }

    const char* tableUIName() const { return tableUIName_; }

    uint selectorUint() const { return selectorUint_; }

    QString selectorString() const { return selectorString_; }

    decode_dcerpc_bind_values_t* selectorDCERPC() const { return selectorDCERPC_; }

    const guid_key* selectorUUID() const { return &selectorUUID_; }

    QString defaultDissector() const { return default_dissector_; }

    QString currentDissector() const { return current_dissector_; }

    dissector_handle_t dissectorHandle() const { return dissector_handle_; }

    void setTable(const decode_as_t *entry);

    void setSelector(const QString &value);

    void setDissectorHandle(dissector_handle_t handle);

    void setUUID(const guid_key& key);

    void updateHandles();
 
private:
    void init(const char *table_name, const void *selector = NULL);
 
    const char* tableName_;    
    const char* tableUIName_;  
 
    // Selector values are stored by value to avoid memory management issues
    // between the transient GUI state and the underlying dissector data.
    uint selectorUint_;              
    QString selectorString_;         
 
    //for special handling of DCE/RPC
    decode_dcerpc_bind_values_t* selectorDCERPC_;  
    guid_key                     selectorUUID_;    
 
    QString default_dissector_;        
    QString current_dissector_;        
    dissector_handle_t dissector_handle_; 
};

typedef struct _dissector_info_t {
    QString            proto_name;        
    guid_key           dcerpc_uuid;       
    dissector_handle_t dissector_handle;  
} dissector_info_t;
 
Q_DECLARE_METATYPE(dissector_info_t*)
 

class DecodeAsModel : public QAbstractTableModel
{
    Q_OBJECT
 
public:
    DecodeAsModel(QObject *parent, capture_file *cf = NULL);

    virtual ~DecodeAsModel();
 

    struct UIntEntry {
        QByteArray table;     
        uint32_t    key;      
        QByteArray pref_name; 

        UIntEntry(const char* t, uint32_t k, const char* pref_suffix) :
            table(t), key(k), pref_name(t) { pref_name.append(pref_suffix); }
    };
 

    enum DecodeAsColumn {
        colTable    = 0, 
        colSelector,     
        colType,         
        colDefault,      
        colProtocol,     
        colDecodeAsMax   
    };
 

    Qt::ItemFlags flags(const QModelIndex &index) const override;

    QVariant data(const QModelIndex &index, int role) const override;

    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const override;

    int rowCount(const QModelIndex &parent = QModelIndex()) const override;

    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
 

    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override;

    void fillTable();
 

    void setDissectorHandle(const QModelIndex &index, dissector_handle_t dissector_handle);
 

    bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;

    bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override;

    void clearAll();

    bool copyRow(int dst_row, int src_row);

    bool copyFromProfile(QString filename, const char **err);

    static QString entryString(const char *table_name, const void *value);

    void applyChanges();
 
protected:
    static void buildChangedList(const char *table_name, ftenum_t selector_type,
                          void *key, void *value, void *user_data);

    static void buildDceRpcChangedList(void *data, void *user_data);

    static void gatherChangedEntries(const char *table_name, ftenum_t selector_type,
                          void *key, void *value, void *user_data);

    static prefs_set_pref_e readDecodeAsEntry(char *key, const char *value,
                          void *user_data, bool);
 
private:
    capture_file *cap_file_;                                          
    QList<DecodeAsItem *> decode_as_items_;                           
    QList<UIntEntry> changed_uint_entries_;                           
    QList<QPair<const char *, const char *> > changed_string_entries_; 
};
 
#endif // DECODE_AS_MODEL_H