105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file p3dMultifileReader.h
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* @author drose
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* @date 2009-06-15
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*/
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#ifndef P3DMULTIFILEREADER_H
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#define P3DMULTIFILEREADER_H
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#include "p3d_plugin_common.h"
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#include "p3dInstanceManager.h" // for openssl
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#include "p3dPackage.h"
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/**
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* A way-simple implementation of Panda's multifile reader. See
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* panda/src/express/multifile.cxx for a full description of the binary
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* format. This implementation doesn't support per-subfile compression or
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* encryption.
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*/
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class P3DMultifileReader {
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public:
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P3DMultifileReader();
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bool open_read(const std::string &pathname, const int &offset = 0);
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inline bool is_open() const;
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void close();
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bool extract_all(const std::string &to_dir, P3DPackage *package,
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P3DPackage::InstallStepThreaded *step);
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bool extract_one(std::ostream &out, const std::string &filename);
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class CertRecord {
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public:
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inline CertRecord(X509 *cert);
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inline CertRecord(const CertRecord ©);
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inline ~CertRecord();
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X509 *_cert;
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};
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typedef std::vector<CertRecord> CertChain;
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int get_num_signatures() const;
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const CertChain &get_signature(int n) const;
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private:
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class Subfile;
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bool read_header(const std::string &pathname);
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bool read_index();
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bool extract_subfile(std::ostream &out, const Subfile &s);
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void check_signatures();
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inline unsigned int read_uint16();
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inline unsigned int read_uint32();
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enum SubfileFlags {
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// If any of these bits are set, we can't read the subfile.
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SF_ignore = 0x003f,
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// These bits are also relevant, and specifically so.
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SF_compressed = 0x0008,
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SF_encrypted = 0x0010,
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SF_signature = 0x0020,
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};
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class Subfile {
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public:
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inline size_t get_last_byte_pos() const;
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std::string _filename;
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size_t _index_start;
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size_t _index_length;
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size_t _data_start;
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size_t _data_length;
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size_t _timestamp;
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};
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ifstream _in;
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bool _is_open;
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int _read_offset;
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typedef std::vector<Subfile> Subfiles;
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Subfiles _subfiles;
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Subfiles _cert_special;
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size_t _last_data_byte;
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typedef std::vector<CertChain> Certificates;
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Certificates _signatures;
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static const char _header[];
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static const size_t _header_size;
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static const int _current_major_ver;
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static const int _current_minor_ver;
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};
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#include "p3dMultifileReader.I"
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#endif
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