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https://github.com/qpdf/qpdf.git
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Move QPDF inner class definitions to new QPDF_private.hh
This commit is contained in:
m-holger
parent
d42fda60d5
commit
f8e6274a2e
@ -725,165 +725,14 @@ class QPDF
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void removePage(QPDFObjectHandle page);
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// End legacy page helpers
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// Writer class is restricted to QPDFWriter so that only it can call certain methods.
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class Writer
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{
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friend class QPDFWriter;
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// End of the public API. The following classes and methods are for qpdf internal use only.
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private:
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static void
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optimize(
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QPDF& qpdf,
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QPDFWriter::ObjTable const& obj,
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std::function<int(QPDFObjectHandle&)> skip_stream_parameters)
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{
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return qpdf.optimize(obj, skip_stream_parameters);
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}
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static void
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getLinearizedParts(
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QPDF& qpdf,
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QPDFWriter::ObjTable const& obj,
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std::vector<QPDFObjectHandle>& part4,
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std::vector<QPDFObjectHandle>& part6,
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std::vector<QPDFObjectHandle>& part7,
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std::vector<QPDFObjectHandle>& part8,
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std::vector<QPDFObjectHandle>& part9)
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{
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qpdf.getLinearizedParts(obj, part4, part6, part7, part8, part9);
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}
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static void
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generateHintStream(
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QPDF& qpdf,
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QPDFWriter::NewObjTable const& new_obj,
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QPDFWriter::ObjTable const& obj,
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std::shared_ptr<Buffer>& hint_stream,
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int& S,
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int& O,
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bool compressed)
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{
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return qpdf.generateHintStream(new_obj, obj, hint_stream, S, O, compressed);
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}
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static std::vector<QPDFObjGen>
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getCompressibleObjGens(QPDF& qpdf)
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{
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return qpdf.getCompressibleObjVector();
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}
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static std::vector<bool>
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getCompressibleObjSet(QPDF& qpdf)
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{
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return qpdf.getCompressibleObjSet();
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}
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static std::map<QPDFObjGen, QPDFXRefEntry> const&
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getXRefTable(QPDF& qpdf)
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{
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return qpdf.getXRefTableInternal();
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}
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static size_t
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tableSize(QPDF& qpdf)
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{
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return qpdf.tableSize();
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}
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};
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// The Resolver class is restricted to QPDFObject so that only it can resolve indirect
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// references.
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class Resolver
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{
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friend class QPDFObject;
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friend class QPDF_Unresolved;
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private:
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static QPDFObject*
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resolved(QPDF* qpdf, QPDFObjGen og)
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{
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return qpdf->resolve(og);
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}
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};
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// StreamCopier class is restricted to QPDFObjectHandle so it can copy stream data.
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class StreamCopier
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{
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friend class QPDFObjectHandle;
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private:
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static void
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copyStreamData(QPDF* qpdf, QPDFObjectHandle const& dest, QPDFObjectHandle const& src)
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{
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qpdf->copyStreamData(dest, src);
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}
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};
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// The ParseGuard class allows QPDFParser to detect re-entrant parsing. It also provides
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// special access to allow the parser to create unresolved objects and dangling references.
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class ParseGuard
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{
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friend class QPDFParser;
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private:
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ParseGuard(QPDF* qpdf) :
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qpdf(qpdf)
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{
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if (qpdf) {
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qpdf->inParse(true);
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}
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}
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static std::shared_ptr<QPDFObject>
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getObject(QPDF* qpdf, int id, int gen, bool parse_pdf)
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{
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return qpdf->getObjectForParser(id, gen, parse_pdf);
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}
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~ParseGuard()
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{
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if (qpdf) {
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qpdf->inParse(false);
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}
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}
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QPDF* qpdf;
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};
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// Pipe class is restricted to QPDF_Stream.
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class Pipe
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{
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friend class QPDF_Stream;
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private:
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static bool
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pipeStreamData(
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QPDF* qpdf,
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QPDFObjGen const& og,
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qpdf_offset_t offset,
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size_t length,
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QPDFObjectHandle dict,
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Pipeline* pipeline,
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bool suppress_warnings,
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bool will_retry)
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{
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return qpdf->pipeStreamData(
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og, offset, length, dict, pipeline, suppress_warnings, will_retry);
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}
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};
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// JobSetter class is restricted to QPDFJob.
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class JobSetter
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{
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friend class QPDFJob;
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private:
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// Enable enhanced warnings for pdf file checking.
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static void
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setCheckMode(QPDF& qpdf, bool val)
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{
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qpdf.m->check_mode = val;
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}
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};
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class Writer;
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class Resolver;
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class StreamCopier;
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class ParseGuard;
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class Pipe;
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class JobSetter;
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// For testing only -- do not add to DLL
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static bool test_json_validators();
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@ -898,136 +747,13 @@ class QPDF
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static std::string const qpdf_version;
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class ObjCache
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{
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public:
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ObjCache() :
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end_before_space(0),
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end_after_space(0)
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{
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}
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ObjCache(
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std::shared_ptr<QPDFObject> object,
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qpdf_offset_t end_before_space = 0,
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qpdf_offset_t end_after_space = 0) :
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object(object),
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end_before_space(end_before_space),
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end_after_space(end_after_space)
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{
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}
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std::shared_ptr<QPDFObject> object;
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qpdf_offset_t end_before_space;
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qpdf_offset_t end_after_space;
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};
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class ObjCopier
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{
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public:
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std::map<QPDFObjGen, QPDFObjectHandle> object_map;
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std::vector<QPDFObjectHandle> to_copy;
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QPDFObjGen::set visiting;
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};
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class EncryptionParameters
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{
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friend class QPDF;
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public:
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EncryptionParameters();
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private:
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bool encrypted;
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bool encryption_initialized;
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int encryption_V;
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int encryption_R;
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bool encrypt_metadata;
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std::map<std::string, encryption_method_e> crypt_filters;
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encryption_method_e cf_stream;
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encryption_method_e cf_string;
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encryption_method_e cf_file;
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std::string provided_password;
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std::string user_password;
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std::string encryption_key;
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std::string cached_object_encryption_key;
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QPDFObjGen cached_key_og;
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bool user_password_matched;
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bool owner_password_matched;
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};
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class ForeignStreamData
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{
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friend class QPDF;
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public:
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ForeignStreamData(
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std::shared_ptr<EncryptionParameters> encp,
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std::shared_ptr<InputSource> file,
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QPDFObjGen const& foreign_og,
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qpdf_offset_t offset,
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size_t length,
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QPDFObjectHandle local_dict);
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private:
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std::shared_ptr<EncryptionParameters> encp;
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std::shared_ptr<InputSource> file;
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QPDFObjGen foreign_og;
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qpdf_offset_t offset;
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size_t length;
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QPDFObjectHandle local_dict;
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};
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class CopiedStreamDataProvider: public QPDFObjectHandle::StreamDataProvider
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{
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public:
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CopiedStreamDataProvider(QPDF& destination_qpdf);
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~CopiedStreamDataProvider() override = default;
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bool provideStreamData(
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QPDFObjGen const& og,
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Pipeline* pipeline,
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bool suppress_warnings,
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bool will_retry) override;
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void registerForeignStream(QPDFObjGen const& local_og, QPDFObjectHandle foreign_stream);
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void registerForeignStream(QPDFObjGen const& local_og, std::shared_ptr<ForeignStreamData>);
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private:
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QPDF& destination_qpdf;
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std::map<QPDFObjGen, QPDFObjectHandle> foreign_streams;
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std::map<QPDFObjGen, std::shared_ptr<ForeignStreamData>> foreign_stream_data;
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};
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class StringDecrypter: public QPDFObjectHandle::StringDecrypter
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{
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friend class QPDF;
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public:
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StringDecrypter(QPDF* qpdf, QPDFObjGen const& og);
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~StringDecrypter() override = default;
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void decryptString(std::string& val) override;
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private:
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QPDF* qpdf;
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QPDFObjGen og;
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};
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class ResolveRecorder
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{
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public:
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ResolveRecorder(QPDF* qpdf, QPDFObjGen const& og) :
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qpdf(qpdf),
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iter(qpdf->m->resolving.insert(og).first)
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{
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}
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virtual ~ResolveRecorder()
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{
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this->qpdf->m->resolving.erase(iter);
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}
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private:
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QPDF* qpdf;
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std::set<QPDFObjGen>::const_iterator iter;
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};
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class ObjCache;
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class ObjCopier;
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class EncryptionParameters;
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class ForeignStreamData;
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class CopiedStreamDataProvider;
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class StringDecrypter;
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class ResolveRecorder;
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class JSONReactor;
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void parse(char const* password);
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@ -1196,200 +922,19 @@ class QPDF
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replaceForeignIndirectObjects(QPDFObjectHandle foreign, ObjCopier& obj_copier, bool top);
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void copyStreamData(QPDFObjectHandle dest_stream, QPDFObjectHandle src_stream);
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// Linearization Hint table structures.
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// Naming conventions:
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// HSomething is the Something Hint Table or table header
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// HSomethingEntry is an entry in the Something table
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// delta_something + min_something = something
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// nbits_something = number of bits required for something
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// something_offset is the pre-adjusted offset in the file. If >=
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// H0_offset, H0_length must be added to get an actual file
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// offset.
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// PDF 1.4: Table F.4
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struct HPageOffsetEntry
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{
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int delta_nobjects{0}; // 1
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qpdf_offset_t delta_page_length{0}; // 2
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// vectors' sizes = nshared_objects
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int nshared_objects{0}; // 3
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std::vector<int> shared_identifiers; // 4
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std::vector<int> shared_numerators; // 5
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qpdf_offset_t delta_content_offset{0}; // 6
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qpdf_offset_t delta_content_length{0}; // 7
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};
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// PDF 1.4: Table F.3
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struct HPageOffset
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{
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int min_nobjects{0}; // 1
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qpdf_offset_t first_page_offset{0}; // 2
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int nbits_delta_nobjects{0}; // 3
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int min_page_length{0}; // 4
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int nbits_delta_page_length{0}; // 5
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int min_content_offset{0}; // 6
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int nbits_delta_content_offset{0}; // 7
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int min_content_length{0}; // 8
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int nbits_delta_content_length{0}; // 9
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int nbits_nshared_objects{0}; // 10
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int nbits_shared_identifier{0}; // 11
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int nbits_shared_numerator{0}; // 12
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int shared_denominator{0}; // 13
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// vector size is npages
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std::vector<HPageOffsetEntry> entries;
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};
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// PDF 1.4: Table F.6
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struct HSharedObjectEntry
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{
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// Item 3 is a 128-bit signature (unsupported by Acrobat)
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int delta_group_length{0}; // 1
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int signature_present{0}; // 2 -- always 0
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int nobjects_minus_one{0}; // 4 -- always 0
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};
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// PDF 1.4: Table F.5
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struct HSharedObject
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{
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int first_shared_obj{0}; // 1
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qpdf_offset_t first_shared_offset{0}; // 2
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int nshared_first_page{0}; // 3
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int nshared_total{0}; // 4
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int nbits_nobjects{0}; // 5
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int min_group_length{0}; // 6
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int nbits_delta_group_length{0}; // 7
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// vector size is nshared_total
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std::vector<HSharedObjectEntry> entries;
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};
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// PDF 1.4: Table F.9
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struct HGeneric
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{
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int first_object{0}; // 1
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qpdf_offset_t first_object_offset{0}; // 2
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int nobjects{0}; // 3
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int group_length{0}; // 4
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};
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// Other linearization data structures
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// Initialized from Linearization Parameter dictionary
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struct LinParameters
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{
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qpdf_offset_t file_size{0}; // /L
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int first_page_object{0}; // /O
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qpdf_offset_t first_page_end{0}; // /E
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int npages{0}; // /N
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qpdf_offset_t xref_zero_offset{0}; // /T
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int first_page{0}; // /P
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qpdf_offset_t H_offset{0}; // offset of primary hint stream
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qpdf_offset_t H_length{0}; // length of primary hint stream
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};
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// Computed hint table value data structures. These tables contain the computed values on which
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// the hint table values are based. They exclude things like number of bits and store actual
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// values instead of mins and deltas. File offsets are also absolute rather than being offset
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// by the size of the primary hint table. We populate the hint table structures from these
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// during writing and compare the hint table values with these during validation. We ignore
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// some values for various reasons described in the code. Those values are omitted from these
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// structures. Note also that object numbers are object numbers from the input file, not the
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// output file.
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// Naming convention: CHSomething is analogous to HSomething above. "CH" is computed hint.
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struct CHPageOffsetEntry
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{
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int nobjects{0};
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int nshared_objects{0};
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// vectors' sizes = nshared_objects
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std::vector<int> shared_identifiers;
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};
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struct CHPageOffset
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{
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// vector size is npages
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std::vector<CHPageOffsetEntry> entries;
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};
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struct CHSharedObjectEntry
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{
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CHSharedObjectEntry(int object) :
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object(object)
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{
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}
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int object;
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};
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// PDF 1.4: Table F.5
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struct CHSharedObject
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{
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int first_shared_obj{0};
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int nshared_first_page{0};
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int nshared_total{0};
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// vector size is nshared_total
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std::vector<CHSharedObjectEntry> entries;
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};
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// No need for CHGeneric -- HGeneric is fine as is.
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// Data structures to support optimization -- implemented in QPDF_optimization.cc
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class ObjUser
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{
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public:
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enum user_e { ou_bad, ou_page, ou_thumb, ou_trailer_key, ou_root_key, ou_root };
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// type is set to ou_bad
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ObjUser();
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// type must be ou_root
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ObjUser(user_e type);
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// type must be one of ou_page or ou_thumb
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ObjUser(user_e type, int pageno);
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// type must be one of ou_trailer_key or ou_root_key
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ObjUser(user_e type, std::string const& key);
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bool operator<(ObjUser const&) const;
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user_e ou_type;
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int pageno; // if ou_page;
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std::string key; // if ou_trailer_key or ou_root_key
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};
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struct UpdateObjectMapsFrame
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{
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UpdateObjectMapsFrame(ObjUser const& ou, QPDFObjectHandle oh, bool top);
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ObjUser const& ou;
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QPDFObjectHandle oh;
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bool top;
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};
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class PatternFinder: public InputSource::Finder
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{
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public:
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PatternFinder(QPDF& qpdf, bool (QPDF::*checker)()) :
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qpdf(qpdf),
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checker(checker)
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{
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}
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~PatternFinder() override = default;
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bool
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check() override
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{
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return (this->qpdf.*checker)();
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}
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private:
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QPDF& qpdf;
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bool (QPDF::*checker)();
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};
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struct HPageOffsetEntry;
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struct HPageOffset;
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struct HSharedObjectEntry;
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struct HSharedObject;
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struct HGeneric;
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struct LinParameters;
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struct CHPageOffsetEntry;
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struct CHPageOffset;
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struct CHSharedObjectEntry;
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struct CHSharedObject;
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class ObjUser;
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struct UpdateObjectMapsFrame;
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class PatternFinder;
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|
||||
// Methods to support pattern finding
|
||||
static bool validatePDFVersion(char const*&, std::string& version);
|
||||
@ -1486,90 +1031,7 @@ class QPDF
|
||||
return QIntC::to_ulonglong(i);
|
||||
}
|
||||
|
||||
class Members
|
||||
{
|
||||
friend class QPDF;
|
||||
friend class ResolveRecorder;
|
||||
|
||||
public:
|
||||
QPDF_DLL
|
||||
~Members() = default;
|
||||
|
||||
private:
|
||||
Members();
|
||||
Members(Members const&) = delete;
|
||||
|
||||
std::shared_ptr<QPDFLogger> log;
|
||||
unsigned long long unique_id{0};
|
||||
QPDFTokenizer tokenizer;
|
||||
std::shared_ptr<InputSource> file;
|
||||
std::string last_object_description;
|
||||
bool provided_password_is_hex_key{false};
|
||||
bool ignore_xref_streams{false};
|
||||
bool suppress_warnings{false};
|
||||
size_t max_warnings{0};
|
||||
bool attempt_recovery{true};
|
||||
bool check_mode{false};
|
||||
std::shared_ptr<EncryptionParameters> encp;
|
||||
std::string pdf_version;
|
||||
std::map<QPDFObjGen, QPDFXRefEntry> xref_table;
|
||||
// Various tables are indexed by object id, with potential size id + 1
|
||||
int xref_table_max_id{std::numeric_limits<int>::max() - 1};
|
||||
qpdf_offset_t xref_table_max_offset{0};
|
||||
std::set<int> deleted_objects;
|
||||
std::map<QPDFObjGen, ObjCache> obj_cache;
|
||||
std::set<QPDFObjGen> resolving;
|
||||
QPDFObjectHandle trailer;
|
||||
std::vector<QPDFObjectHandle> all_pages;
|
||||
bool invalid_page_found{false};
|
||||
std::map<QPDFObjGen, int> pageobj_to_pages_pos;
|
||||
bool pushed_inherited_attributes_to_pages{false};
|
||||
bool ever_pushed_inherited_attributes_to_pages{false};
|
||||
bool ever_called_get_all_pages{false};
|
||||
std::vector<QPDFExc> warnings;
|
||||
std::map<unsigned long long, ObjCopier> object_copiers;
|
||||
std::shared_ptr<QPDFObjectHandle::StreamDataProvider> copied_streams;
|
||||
// copied_stream_data_provider is owned by copied_streams
|
||||
CopiedStreamDataProvider* copied_stream_data_provider{nullptr};
|
||||
bool reconstructed_xref{false};
|
||||
bool fixed_dangling_refs{false};
|
||||
bool immediate_copy_from{false};
|
||||
bool in_parse{false};
|
||||
bool parsed{false};
|
||||
std::set<int> resolved_object_streams;
|
||||
|
||||
// Linearization data
|
||||
qpdf_offset_t first_xref_item_offset{0}; // actual value from file
|
||||
bool uncompressed_after_compressed{false};
|
||||
bool linearization_warnings{false};
|
||||
|
||||
// Linearization parameter dictionary and hint table data: may be read from file or computed
|
||||
// prior to writing a linearized file
|
||||
QPDFObjectHandle lindict;
|
||||
LinParameters linp;
|
||||
HPageOffset page_offset_hints;
|
||||
HSharedObject shared_object_hints;
|
||||
HGeneric outline_hints;
|
||||
|
||||
// Computed linearization data: used to populate above tables during writing and to compare
|
||||
// with them during validation. c_ means computed.
|
||||
LinParameters c_linp;
|
||||
CHPageOffset c_page_offset_data;
|
||||
CHSharedObject c_shared_object_data;
|
||||
HGeneric c_outline_data;
|
||||
|
||||
// Object ordering data for linearized files: initialized by calculateLinearizationData().
|
||||
// Part numbers refer to the PDF 1.4 specification.
|
||||
std::vector<QPDFObjectHandle> part4;
|
||||
std::vector<QPDFObjectHandle> part6;
|
||||
std::vector<QPDFObjectHandle> part7;
|
||||
std::vector<QPDFObjectHandle> part8;
|
||||
std::vector<QPDFObjectHandle> part9;
|
||||
|
||||
// Optimization data
|
||||
std::map<ObjUser, std::set<QPDFObjGen>> obj_user_to_objects;
|
||||
std::map<QPDFObjGen, std::set<ObjUser>> object_to_obj_users;
|
||||
};
|
||||
class Members;
|
||||
|
||||
// Keep all member variables inside the Members object, which we dynamically allocate. This
|
||||
// makes it possible to add new private members without breaking binary compatibility.
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
#include <qpdf/qpdf-config.h> // include first for large file support
|
||||
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
|
||||
#include <array>
|
||||
#include <atomic>
|
||||
|
||||
@ -13,7 +13,6 @@
|
||||
#include <qpdf/Pl_StdioFile.hh>
|
||||
#include <qpdf/Pl_String.hh>
|
||||
#include <qpdf/QIntC.hh>
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDFAcroFormDocumentHelper.hh>
|
||||
#include <qpdf/QPDFCryptoProvider.hh>
|
||||
#include <qpdf/QPDFEmbeddedFileDocumentHelper.hh>
|
||||
@ -26,6 +25,7 @@
|
||||
#include <qpdf/QPDFSystemError.hh>
|
||||
#include <qpdf/QPDFUsage.hh>
|
||||
#include <qpdf/QPDFWriter.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
#include <qpdf/QTC.hh>
|
||||
#include <qpdf/QUtil.hh>
|
||||
|
||||
|
||||
@ -14,10 +14,10 @@
|
||||
#include <qpdf/Pl_RC4.hh>
|
||||
#include <qpdf/Pl_StdioFile.hh>
|
||||
#include <qpdf/QIntC.hh>
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDFObjectHandle.hh>
|
||||
#include <qpdf/QPDF_Name.hh>
|
||||
#include <qpdf/QPDF_String.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
#include <qpdf/QTC.hh>
|
||||
#include <qpdf/QUtil.hh>
|
||||
#include <qpdf/RC4.hh>
|
||||
|
||||
@ -10,8 +10,8 @@
|
||||
#include <qpdf/Pl_Flate.hh>
|
||||
#include <qpdf/Pl_QPDFTokenizer.hh>
|
||||
#include <qpdf/QIntC.hh>
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDFExc.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
#include <qpdf/QTC.hh>
|
||||
#include <qpdf/QUtil.hh>
|
||||
#include <qpdf/SF_ASCII85Decode.hh>
|
||||
|
||||
@ -3,7 +3,7 @@
|
||||
|
||||
#include <qpdf/assert_debug.h>
|
||||
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
|
||||
#include <qpdf/QPDFExc.hh>
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
// See doc/linearization.
|
||||
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
|
||||
#include <qpdf/BitStream.hh>
|
||||
#include <qpdf/BitWriter.hh>
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
|
||||
#include <qpdf/assert_debug.h>
|
||||
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
|
||||
#include <qpdf/QPDFExc.hh>
|
||||
#include <qpdf/QPDFWriter_private.hh>
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
|
||||
#include <qpdf/QPDFExc.hh>
|
||||
#include <qpdf/QTC.hh>
|
||||
|
||||
@ -6,14 +6,13 @@
|
||||
|
||||
#include <qpdf/Constants.h>
|
||||
#include <qpdf/JSON.hh>
|
||||
#include <qpdf/QPDF.hh>
|
||||
#include <qpdf/QPDFValue.hh>
|
||||
#include <qpdf/QPDF_private.hh>
|
||||
#include <qpdf/Types.h>
|
||||
|
||||
#include <string>
|
||||
#include <string_view>
|
||||
|
||||
class QPDF;
|
||||
class QPDFObjectHandle;
|
||||
|
||||
class QPDFObject
|
||||
|
||||
560
libqpdf/qpdf/QPDF_private.hh
Normal file
560
libqpdf/qpdf/QPDF_private.hh
Normal file
@ -0,0 +1,560 @@
|
||||
#ifndef QPDF_PRIVATE_HH
|
||||
#define QPDF_PRIVATE_HH
|
||||
|
||||
#include <qpdf/QPDF.hh>
|
||||
|
||||
// Writer class is restricted to QPDFWriter so that only it can call certain methods.
|
||||
class QPDF::Writer
|
||||
{
|
||||
friend class QPDFWriter;
|
||||
|
||||
private:
|
||||
static void
|
||||
optimize(
|
||||
QPDF& qpdf,
|
||||
QPDFWriter::ObjTable const& obj,
|
||||
std::function<int(QPDFObjectHandle&)> skip_stream_parameters)
|
||||
{
|
||||
return qpdf.optimize(obj, skip_stream_parameters);
|
||||
}
|
||||
|
||||
static void
|
||||
getLinearizedParts(
|
||||
QPDF& qpdf,
|
||||
QPDFWriter::ObjTable const& obj,
|
||||
std::vector<QPDFObjectHandle>& part4,
|
||||
std::vector<QPDFObjectHandle>& part6,
|
||||
std::vector<QPDFObjectHandle>& part7,
|
||||
std::vector<QPDFObjectHandle>& part8,
|
||||
std::vector<QPDFObjectHandle>& part9)
|
||||
{
|
||||
qpdf.getLinearizedParts(obj, part4, part6, part7, part8, part9);
|
||||
}
|
||||
|
||||
static void
|
||||
generateHintStream(
|
||||
QPDF& qpdf,
|
||||
QPDFWriter::NewObjTable const& new_obj,
|
||||
QPDFWriter::ObjTable const& obj,
|
||||
std::shared_ptr<Buffer>& hint_stream,
|
||||
int& S,
|
||||
int& O,
|
||||
bool compressed)
|
||||
{
|
||||
return qpdf.generateHintStream(new_obj, obj, hint_stream, S, O, compressed);
|
||||
}
|
||||
|
||||
static std::vector<QPDFObjGen>
|
||||
getCompressibleObjGens(QPDF& qpdf)
|
||||
{
|
||||
return qpdf.getCompressibleObjVector();
|
||||
}
|
||||
|
||||
static std::vector<bool>
|
||||
getCompressibleObjSet(QPDF& qpdf)
|
||||
{
|
||||
return qpdf.getCompressibleObjSet();
|
||||
}
|
||||
|
||||
static std::map<QPDFObjGen, QPDFXRefEntry> const&
|
||||
getXRefTable(QPDF& qpdf)
|
||||
{
|
||||
return qpdf.getXRefTableInternal();
|
||||
}
|
||||
|
||||
static size_t
|
||||
tableSize(QPDF& qpdf)
|
||||
{
|
||||
return qpdf.tableSize();
|
||||
}
|
||||
};
|
||||
|
||||
// The Resolver class is restricted to QPDFObject so that only it can resolve indirect
|
||||
// references.
|
||||
class QPDF::Resolver
|
||||
{
|
||||
friend class QPDFObject;
|
||||
friend class QPDF_Unresolved;
|
||||
|
||||
private:
|
||||
static QPDFObject*
|
||||
resolved(QPDF* qpdf, QPDFObjGen og)
|
||||
{
|
||||
return qpdf->resolve(og);
|
||||
}
|
||||
};
|
||||
|
||||
// StreamCopier class is restricted to QPDFObjectHandle so it can copy stream data.
|
||||
class QPDF::StreamCopier
|
||||
{
|
||||
friend class QPDFObjectHandle;
|
||||
|
||||
private:
|
||||
static void
|
||||
copyStreamData(QPDF* qpdf, QPDFObjectHandle const& dest, QPDFObjectHandle const& src)
|
||||
{
|
||||
qpdf->copyStreamData(dest, src);
|
||||
}
|
||||
};
|
||||
|
||||
// The ParseGuard class allows QPDFParser to detect re-entrant parsing. It also provides
|
||||
// special access to allow the parser to create unresolved objects and dangling references.
|
||||
class QPDF::ParseGuard
|
||||
{
|
||||
friend class QPDFParser;
|
||||
|
||||
private:
|
||||
ParseGuard(QPDF* qpdf) :
|
||||
qpdf(qpdf)
|
||||
{
|
||||
if (qpdf) {
|
||||
qpdf->inParse(true);
|
||||
}
|
||||
}
|
||||
|
||||
static std::shared_ptr<QPDFObject>
|
||||
getObject(QPDF* qpdf, int id, int gen, bool parse_pdf)
|
||||
{
|
||||
return qpdf->getObjectForParser(id, gen, parse_pdf);
|
||||
}
|
||||
|
||||
~ParseGuard()
|
||||
{
|
||||
if (qpdf) {
|
||||
qpdf->inParse(false);
|
||||
}
|
||||
}
|
||||
QPDF* qpdf;
|
||||
};
|
||||
|
||||
// Pipe class is restricted to QPDF_Stream.
|
||||
class QPDF::Pipe
|
||||
{
|
||||
friend class QPDF_Stream;
|
||||
|
||||
private:
|
||||
static bool
|
||||
pipeStreamData(
|
||||
QPDF* qpdf,
|
||||
QPDFObjGen const& og,
|
||||
qpdf_offset_t offset,
|
||||
size_t length,
|
||||
QPDFObjectHandle dict,
|
||||
Pipeline* pipeline,
|
||||
bool suppress_warnings,
|
||||
bool will_retry)
|
||||
{
|
||||
return qpdf->pipeStreamData(
|
||||
og, offset, length, dict, pipeline, suppress_warnings, will_retry);
|
||||
}
|
||||
};
|
||||
|
||||
class QPDF::ObjCache
|
||||
{
|
||||
public:
|
||||
ObjCache() :
|
||||
end_before_space(0),
|
||||
end_after_space(0)
|
||||
{
|
||||
}
|
||||
ObjCache(
|
||||
std::shared_ptr<QPDFObject> object,
|
||||
qpdf_offset_t end_before_space = 0,
|
||||
qpdf_offset_t end_after_space = 0) :
|
||||
object(object),
|
||||
end_before_space(end_before_space),
|
||||
end_after_space(end_after_space)
|
||||
{
|
||||
}
|
||||
|
||||
std::shared_ptr<QPDFObject> object;
|
||||
qpdf_offset_t end_before_space;
|
||||
qpdf_offset_t end_after_space;
|
||||
};
|
||||
|
||||
class QPDF::ObjCopier
|
||||
{
|
||||
public:
|
||||
std::map<QPDFObjGen, QPDFObjectHandle> object_map;
|
||||
std::vector<QPDFObjectHandle> to_copy;
|
||||
QPDFObjGen::set visiting;
|
||||
};
|
||||
|
||||
class QPDF::EncryptionParameters
|
||||
{
|
||||
friend class QPDF;
|
||||
|
||||
public:
|
||||
EncryptionParameters();
|
||||
|
||||
private:
|
||||
bool encrypted;
|
||||
bool encryption_initialized;
|
||||
int encryption_V;
|
||||
int encryption_R;
|
||||
bool encrypt_metadata;
|
||||
std::map<std::string, encryption_method_e> crypt_filters;
|
||||
encryption_method_e cf_stream;
|
||||
encryption_method_e cf_string;
|
||||
encryption_method_e cf_file;
|
||||
std::string provided_password;
|
||||
std::string user_password;
|
||||
std::string encryption_key;
|
||||
std::string cached_object_encryption_key;
|
||||
QPDFObjGen cached_key_og;
|
||||
bool user_password_matched;
|
||||
bool owner_password_matched;
|
||||
};
|
||||
|
||||
class QPDF::ForeignStreamData
|
||||
{
|
||||
friend class QPDF;
|
||||
|
||||
public:
|
||||
ForeignStreamData(
|
||||
std::shared_ptr<EncryptionParameters> encp,
|
||||
std::shared_ptr<InputSource> file,
|
||||
QPDFObjGen const& foreign_og,
|
||||
qpdf_offset_t offset,
|
||||
size_t length,
|
||||
QPDFObjectHandle local_dict);
|
||||
|
||||
private:
|
||||
std::shared_ptr<EncryptionParameters> encp;
|
||||
std::shared_ptr<InputSource> file;
|
||||
QPDFObjGen foreign_og;
|
||||
qpdf_offset_t offset;
|
||||
size_t length;
|
||||
QPDFObjectHandle local_dict;
|
||||
};
|
||||
|
||||
class QPDF::CopiedStreamDataProvider: public QPDFObjectHandle::StreamDataProvider
|
||||
{
|
||||
public:
|
||||
CopiedStreamDataProvider(QPDF& destination_qpdf);
|
||||
~CopiedStreamDataProvider() override = default;
|
||||
bool provideStreamData(
|
||||
QPDFObjGen const& og, Pipeline* pipeline, bool suppress_warnings, bool will_retry) override;
|
||||
void registerForeignStream(QPDFObjGen const& local_og, QPDFObjectHandle foreign_stream);
|
||||
void registerForeignStream(QPDFObjGen const& local_og, std::shared_ptr<ForeignStreamData>);
|
||||
|
||||
private:
|
||||
QPDF& destination_qpdf;
|
||||
std::map<QPDFObjGen, QPDFObjectHandle> foreign_streams;
|
||||
std::map<QPDFObjGen, std::shared_ptr<ForeignStreamData>> foreign_stream_data;
|
||||
};
|
||||
|
||||
class QPDF::StringDecrypter: public QPDFObjectHandle::StringDecrypter
|
||||
{
|
||||
friend class QPDF;
|
||||
|
||||
public:
|
||||
StringDecrypter(QPDF* qpdf, QPDFObjGen const& og);
|
||||
~StringDecrypter() override = default;
|
||||
void decryptString(std::string& val) override;
|
||||
|
||||
private:
|
||||
QPDF* qpdf;
|
||||
QPDFObjGen og;
|
||||
};
|
||||
|
||||
// PDF 1.4: Table F.4
|
||||
struct QPDF::HPageOffsetEntry
|
||||
{
|
||||
int delta_nobjects{0}; // 1
|
||||
qpdf_offset_t delta_page_length{0}; // 2
|
||||
// vectors' sizes = nshared_objects
|
||||
int nshared_objects{0}; // 3
|
||||
std::vector<int> shared_identifiers; // 4
|
||||
std::vector<int> shared_numerators; // 5
|
||||
qpdf_offset_t delta_content_offset{0}; // 6
|
||||
qpdf_offset_t delta_content_length{0}; // 7
|
||||
};
|
||||
|
||||
// PDF 1.4: Table F.3
|
||||
struct QPDF::HPageOffset
|
||||
{
|
||||
int min_nobjects{0}; // 1
|
||||
qpdf_offset_t first_page_offset{0}; // 2
|
||||
int nbits_delta_nobjects{0}; // 3
|
||||
int min_page_length{0}; // 4
|
||||
int nbits_delta_page_length{0}; // 5
|
||||
int min_content_offset{0}; // 6
|
||||
int nbits_delta_content_offset{0}; // 7
|
||||
int min_content_length{0}; // 8
|
||||
int nbits_delta_content_length{0}; // 9
|
||||
int nbits_nshared_objects{0}; // 10
|
||||
int nbits_shared_identifier{0}; // 11
|
||||
int nbits_shared_numerator{0}; // 12
|
||||
int shared_denominator{0}; // 13
|
||||
// vector size is npages
|
||||
std::vector<HPageOffsetEntry> entries;
|
||||
};
|
||||
|
||||
// PDF 1.4: Table F.6
|
||||
struct QPDF::HSharedObjectEntry
|
||||
{
|
||||
// Item 3 is a 128-bit signature (unsupported by Acrobat)
|
||||
int delta_group_length{0}; // 1
|
||||
int signature_present{0}; // 2 -- always 0
|
||||
int nobjects_minus_one{0}; // 4 -- always 0
|
||||
};
|
||||
|
||||
// PDF 1.4: Table F.5
|
||||
struct QPDF::HSharedObject
|
||||
{
|
||||
int first_shared_obj{0}; // 1
|
||||
qpdf_offset_t first_shared_offset{0}; // 2
|
||||
int nshared_first_page{0}; // 3
|
||||
int nshared_total{0}; // 4
|
||||
int nbits_nobjects{0}; // 5
|
||||
int min_group_length{0}; // 6
|
||||
int nbits_delta_group_length{0}; // 7
|
||||
// vector size is nshared_total
|
||||
std::vector<HSharedObjectEntry> entries;
|
||||
};
|
||||
|
||||
// PDF 1.4: Table F.9
|
||||
struct QPDF::HGeneric
|
||||
{
|
||||
int first_object{0}; // 1
|
||||
qpdf_offset_t first_object_offset{0}; // 2
|
||||
int nobjects{0}; // 3
|
||||
int group_length{0}; // 4
|
||||
};
|
||||
|
||||
// Other linearization data structures
|
||||
|
||||
// Initialized from Linearization Parameter dictionary
|
||||
struct QPDF::LinParameters
|
||||
{
|
||||
qpdf_offset_t file_size{0}; // /L
|
||||
int first_page_object{0}; // /O
|
||||
qpdf_offset_t first_page_end{0}; // /E
|
||||
int npages{0}; // /N
|
||||
qpdf_offset_t xref_zero_offset{0}; // /T
|
||||
int first_page{0}; // /P
|
||||
qpdf_offset_t H_offset{0}; // offset of primary hint stream
|
||||
qpdf_offset_t H_length{0}; // length of primary hint stream
|
||||
};
|
||||
|
||||
// Computed hint table value data structures. These tables contain the computed values on which
|
||||
// the hint table values are based. They exclude things like number of bits and store actual
|
||||
// values instead of mins and deltas. File offsets are also absolute rather than being offset
|
||||
// by the size of the primary hint table. We populate the hint table structures from these
|
||||
// during writing and compare the hint table values with these during validation. We ignore
|
||||
// some values for various reasons described in the code. Those values are omitted from these
|
||||
// structures. Note also that object numbers are object numbers from the input file, not the
|
||||
// output file.
|
||||
|
||||
// Naming convention: CHSomething is analogous to HSomething above. "CH" is computed hint.
|
||||
|
||||
struct QPDF::CHPageOffsetEntry
|
||||
{
|
||||
int nobjects{0};
|
||||
int nshared_objects{0};
|
||||
// vectors' sizes = nshared_objects
|
||||
std::vector<int> shared_identifiers;
|
||||
};
|
||||
|
||||
struct QPDF::CHPageOffset
|
||||
{
|
||||
// vector size is npages
|
||||
std::vector<CHPageOffsetEntry> entries;
|
||||
};
|
||||
|
||||
struct QPDF::CHSharedObjectEntry
|
||||
{
|
||||
CHSharedObjectEntry(int object) :
|
||||
object(object)
|
||||
{
|
||||
}
|
||||
|
||||
int object;
|
||||
};
|
||||
|
||||
// PDF 1.4: Table F.5
|
||||
struct QPDF::CHSharedObject
|
||||
{
|
||||
int first_shared_obj{0};
|
||||
int nshared_first_page{0};
|
||||
int nshared_total{0};
|
||||
// vector size is nshared_total
|
||||
std::vector<CHSharedObjectEntry> entries;
|
||||
};
|
||||
|
||||
// No need for CHGeneric -- HGeneric is fine as is.
|
||||
|
||||
// Data structures to support optimization -- implemented in QPDF_optimization.cc
|
||||
|
||||
class QPDF::ObjUser
|
||||
{
|
||||
public:
|
||||
enum user_e { ou_bad, ou_page, ou_thumb, ou_trailer_key, ou_root_key, ou_root };
|
||||
|
||||
// type is set to ou_bad
|
||||
ObjUser();
|
||||
|
||||
// type must be ou_root
|
||||
ObjUser(user_e type);
|
||||
|
||||
// type must be one of ou_page or ou_thumb
|
||||
ObjUser(user_e type, int pageno);
|
||||
|
||||
// type must be one of ou_trailer_key or ou_root_key
|
||||
ObjUser(user_e type, std::string const& key);
|
||||
|
||||
bool operator<(ObjUser const&) const;
|
||||
|
||||
user_e ou_type;
|
||||
int pageno; // if ou_page;
|
||||
std::string key; // if ou_trailer_key or ou_root_key
|
||||
};
|
||||
|
||||
struct QPDF::UpdateObjectMapsFrame
|
||||
{
|
||||
UpdateObjectMapsFrame(ObjUser const& ou, QPDFObjectHandle oh, bool top);
|
||||
|
||||
ObjUser const& ou;
|
||||
QPDFObjectHandle oh;
|
||||
bool top;
|
||||
};
|
||||
|
||||
class QPDF::PatternFinder: public InputSource::Finder
|
||||
{
|
||||
public:
|
||||
PatternFinder(QPDF& qpdf, bool (QPDF::*checker)()) :
|
||||
qpdf(qpdf),
|
||||
checker(checker)
|
||||
{
|
||||
}
|
||||
~PatternFinder() override = default;
|
||||
bool
|
||||
check() override
|
||||
{
|
||||
return (this->qpdf.*checker)();
|
||||
}
|
||||
|
||||
private:
|
||||
QPDF& qpdf;
|
||||
bool (QPDF::*checker)();
|
||||
};
|
||||
|
||||
class QPDF::Members
|
||||
{
|
||||
friend class QPDF;
|
||||
friend class ResolveRecorder;
|
||||
|
||||
public:
|
||||
QPDF_DLL
|
||||
~Members() = default;
|
||||
|
||||
private:
|
||||
Members();
|
||||
Members(Members const&) = delete;
|
||||
|
||||
std::shared_ptr<QPDFLogger> log;
|
||||
unsigned long long unique_id{0};
|
||||
QPDFTokenizer tokenizer;
|
||||
std::shared_ptr<InputSource> file;
|
||||
std::string last_object_description;
|
||||
bool provided_password_is_hex_key{false};
|
||||
bool ignore_xref_streams{false};
|
||||
bool suppress_warnings{false};
|
||||
size_t max_warnings{0};
|
||||
bool attempt_recovery{true};
|
||||
bool check_mode{false};
|
||||
std::shared_ptr<EncryptionParameters> encp;
|
||||
std::string pdf_version;
|
||||
std::map<QPDFObjGen, QPDFXRefEntry> xref_table;
|
||||
// Various tables are indexed by object id, with potential size id + 1
|
||||
int xref_table_max_id{std::numeric_limits<int>::max() - 1};
|
||||
qpdf_offset_t xref_table_max_offset{0};
|
||||
std::set<int> deleted_objects;
|
||||
std::map<QPDFObjGen, ObjCache> obj_cache;
|
||||
std::set<QPDFObjGen> resolving;
|
||||
QPDFObjectHandle trailer;
|
||||
std::vector<QPDFObjectHandle> all_pages;
|
||||
bool invalid_page_found{false};
|
||||
std::map<QPDFObjGen, int> pageobj_to_pages_pos;
|
||||
bool pushed_inherited_attributes_to_pages{false};
|
||||
bool ever_pushed_inherited_attributes_to_pages{false};
|
||||
bool ever_called_get_all_pages{false};
|
||||
std::vector<QPDFExc> warnings;
|
||||
std::map<unsigned long long, ObjCopier> object_copiers;
|
||||
std::shared_ptr<QPDFObjectHandle::StreamDataProvider> copied_streams;
|
||||
// copied_stream_data_provider is owned by copied_streams
|
||||
CopiedStreamDataProvider* copied_stream_data_provider{nullptr};
|
||||
bool reconstructed_xref{false};
|
||||
bool fixed_dangling_refs{false};
|
||||
bool immediate_copy_from{false};
|
||||
bool in_parse{false};
|
||||
bool parsed{false};
|
||||
std::set<int> resolved_object_streams;
|
||||
|
||||
// Linearization data
|
||||
qpdf_offset_t first_xref_item_offset{0}; // actual value from file
|
||||
bool uncompressed_after_compressed{false};
|
||||
bool linearization_warnings{false};
|
||||
|
||||
// Linearization parameter dictionary and hint table data: may be read from file or computed
|
||||
// prior to writing a linearized file
|
||||
QPDFObjectHandle lindict;
|
||||
LinParameters linp;
|
||||
HPageOffset page_offset_hints;
|
||||
HSharedObject shared_object_hints;
|
||||
HGeneric outline_hints;
|
||||
|
||||
// Computed linearization data: used to populate above tables during writing and to compare
|
||||
// with them during validation. c_ means computed.
|
||||
LinParameters c_linp;
|
||||
CHPageOffset c_page_offset_data;
|
||||
CHSharedObject c_shared_object_data;
|
||||
HGeneric c_outline_data;
|
||||
|
||||
// Object ordering data for linearized files: initialized by calculateLinearizationData().
|
||||
// Part numbers refer to the PDF 1.4 specification.
|
||||
std::vector<QPDFObjectHandle> part4;
|
||||
std::vector<QPDFObjectHandle> part6;
|
||||
std::vector<QPDFObjectHandle> part7;
|
||||
std::vector<QPDFObjectHandle> part8;
|
||||
std::vector<QPDFObjectHandle> part9;
|
||||
|
||||
// Optimization data
|
||||
std::map<ObjUser, std::set<QPDFObjGen>> obj_user_to_objects;
|
||||
std::map<QPDFObjGen, std::set<ObjUser>> object_to_obj_users;
|
||||
};
|
||||
|
||||
// JobSetter class is restricted to QPDFJob.
|
||||
class QPDF::JobSetter
|
||||
{
|
||||
friend class QPDFJob;
|
||||
|
||||
private:
|
||||
// Enable enhanced warnings for pdf file checking.
|
||||
static void
|
||||
setCheckMode(QPDF& qpdf, bool val)
|
||||
{
|
||||
qpdf.m->check_mode = val;
|
||||
}
|
||||
};
|
||||
|
||||
class QPDF::ResolveRecorder
|
||||
{
|
||||
public:
|
||||
ResolveRecorder(QPDF* qpdf, QPDFObjGen const& og) :
|
||||
qpdf(qpdf),
|
||||
iter(qpdf->m->resolving.insert(og).first)
|
||||
{
|
||||
}
|
||||
virtual ~ResolveRecorder()
|
||||
{
|
||||
this->qpdf->m->resolving.erase(iter);
|
||||
}
|
||||
|
||||
private:
|
||||
QPDF* qpdf;
|
||||
std::set<QPDFObjGen>::const_iterator iter;
|
||||
};
|
||||
|
||||
#endif // QPDF_PRIVATE_HH
|
||||
Loading…
Reference in New Issue
Block a user