FileConvergenceLayer.h

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00001 /*
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00006  * 
00007  * Intel Open Source License 
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00009  * Copyright (c) 2004 Intel Corporation. All rights reserved. 
00010  * 
00011  * Redistribution and use in source and binary forms, with or without
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00038 #ifndef _FILE_CONVERGENCE_LAYER_H_
00039 #define _FILE_CONVERGENCE_LAYER_H_
00040 
00041 #include "ConvergenceLayer.h"
00042 #include <oasys/thread/Thread.h>
00043 
00044 namespace dtn {
00045 
00046 class FileConvergenceLayer : public ConvergenceLayer {
00047 public:
00051     FileConvergenceLayer();
00052 
00054     
00055     virtual bool interface_up(Interface* iface,
00056                               int argc, const char* argv[]);
00057     virtual bool interface_down(Interface* iface);
00058     virtual bool open_contact(const ContactRef& contact);
00059     virtual bool close_contact(const ContactRef& contact);
00060     virtual void send_bundle(const ContactRef& contact, Bundle* bundle);
00061 
00062 protected:
00066     static const int CURRENT_VERSION = 0x1;
00067      
00071     struct FileHeader {
00072         u_int8_t version;               
00073         u_int8_t pad;                   
00074         u_int16_t header_length;        
00075         u_int32_t bundle_length;        
00076     } __attribute__((packed));
00077     
00081     bool extract_dir(const char* nexthop, std::string* dirp);
00082     
00087     bool validate_dir(const std::string& dir);
00088         
00093     class Scanner : public CLInfo, public oasys::Logger, public oasys::Thread {
00094     public:
00098         Scanner(int secs_per_scan, const std::string& dir);
00099 
00103         void stop();
00104 
00105     protected:
00109         void run();
00110         
00111         int secs_per_scan_;     
00112         std::string dir_;       
00113         bool run_;              
00114     };
00115 };
00116 
00117 } // namespace dtn
00118 
00119 #endif /* _FILE_CONVERGENCE_LAYER_H_ */

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