//
// XRef.h
//
-// Copyright 1996 Derek B. Noonburg
+// Copyright 1996-2002 Glyph & Cog, LLC
//
//========================================================================
//------------------------------------------------------------------------
struct XRefEntry {
- int offset;
+ Guint offset;
int gen;
GBool used;
};
public:
// Constructor. Read xref table from stream.
- XRef(BaseStream *str, GString *userPassword);
+ XRef(BaseStream *strA, GString *ownerPassword, GString *userPassword);
// Destructor.
~XRef();
// Is xref table valid?
GBool isOk() { return ok; }
+ // Get the error code (if isOk() returns false).
+ int getErrorCode() { return errCode; }
+
// Is the file encrypted?
#ifndef NO_DECRYPTION
GBool isEncrypted() { return encrypted; }
#endif
// Check various permissions.
- GBool okToPrint();
- GBool okToChange();
- GBool okToCopy();
- GBool okToAddNotes();
+ GBool okToPrint(GBool ignoreOwnerPW = gFalse);
+ GBool okToChange(GBool ignoreOwnerPW = gFalse);
+ GBool okToCopy(GBool ignoreOwnerPW = gFalse);
+ GBool okToAddNotes(GBool ignoreOwnerPW = gFalse);
// Get catalog object.
Object *getCatalog(Object *obj) { return fetch(rootNum, rootGen, obj); }
// Return the document's Info dictionary (if any).
Object *getDocInfo(Object *obj);
+ Object *getDocInfoNF(Object *obj);
// Return the number of objects in the xref table.
int getNumObjects() { return size; }
// Return the offset of the last xref table.
- int getLastXRefPos() { return lastXRefPos; }
+ Guint getLastXRefPos() { return lastXRefPos; }
// Return the catalog object reference.
int getRootNum() { return rootNum; }
int getRootGen() { return rootGen; }
// Get end position for a stream in a damaged file.
- // Returns -1 if unknown or file is not damaged.
- int getStreamEnd(int start);
+ // Returns false if unknown or file is not damaged.
+ GBool getStreamEnd(Guint streamStart, Guint *streamEnd);
private:
BaseStream *str; // input stream
- int start; // offset in file (to allow for garbage
+ Guint start; // offset in file (to allow for garbage
// at beginning of file)
XRefEntry *entries; // xref entries
int size; // size of <entries> array
int rootNum, rootGen; // catalog dict
GBool ok; // true if xref table is valid
+ int errCode; // error code (if <ok> is false)
Object trailerDict; // trailer dictionary
- int lastXRefPos; // offset of last xref table
- int *streamEnds; // 'endstream' positions - only used in
+ Guint lastXRefPos; // offset of last xref table
+ Guint *streamEnds; // 'endstream' positions - only used in
// damaged files
int streamEndsLen; // number of valid entries in streamEnds
#ifndef NO_DECRYPTION
GBool encrypted; // true if file is encrypted
+ int encVersion; // encryption algorithm
+ int encRevision; // security handler revision
+ int keyLength; // length of key, in bytes
int permFlags; // permission bits
Guchar fileKey[16]; // file decryption key
+ GBool ownerPasswordOk; // true if owner password is correct
#endif
- int readTrailer();
- GBool readXRef(int *pos);
+ Guint readTrailer();
+ GBool readXRef(Guint *pos);
GBool constructXRef();
- GBool checkEncrypted(GString *userPassword);
+ GBool checkEncrypted(GString *ownerPassword, GString *userPassword);
+ Guint strToUnsigned(char *s);
};
-//------------------------------------------------------------------------
-// The global xref table
-//------------------------------------------------------------------------
-
-extern XRef *xref;
-
#endif