void encrypt( const char* pszInput, const char* pszOutput,
const std::string & userPass, const std::string & ownerPass,
const PdfEncrypt::EPdfEncryptAlgorithm eAlgorithm, const int nPermissions )
{
PdfVecObjects objects;
PdfParser parser( &objects );
objects.SetAutoDelete( true );
parser.ParseFile( pszInput );
PdfEncrypt::EPdfKeyLength eKeyLength;
EPdfVersion eVersion;
switch( eAlgorithm )
{
case PdfEncrypt::ePdfEncryptAlgorithm_RC4V1:
eKeyLength = PdfEncrypt::ePdfKeyLength_40;
eVersion = ePdfVersion_1_3;
break;
#ifdef PODOFO_HAVE_CRYPTO_LIBS
case PdfEncrypt::ePdfEncryptAlgorithm_AESV3:;
eKeyLength = PdfEncrypt::ePdfKeyLength_256;
eVersion = ePdfVersion_1_7;
break;
#endif // PODOFO_HAVE_CRYPTO_LIBS
case PdfEncrypt::ePdfEncryptAlgorithm_RC4V2:
case PdfEncrypt::ePdfEncryptAlgorithm_AESV2:
default:
eKeyLength = PdfEncrypt::ePdfKeyLength_128;
eVersion = ePdfVersion_1_5;
break;
}
PdfWriter writer( &parser );
PdfEncrypt *encrypt = PdfEncrypt::CreatePdfEncrypt( userPass, ownerPass, nPermissions,
eAlgorithm, eKeyLength );
writer.SetPdfVersion( eVersion );
writer.SetEncrypted( *encrypt );
writer.Write( pszOutput );
delete encrypt;
}
int main (int argc, char *argv[])
{
PdfError::EnableLogging(true);
PdfError::EnableDebug(true);
PdfVecObjects objects;
PdfParser parser( &objects );
objects.SetAutoDelete( true );
if( argc != 3 )
{
cerr << "Usage: podofogc <input_filename> <output_filename>\n"
<< " Performs garbage collection on a PDF file.\n"
<< " All objects that are not reachable from within\n"
<< " the trailer are deleted.\n"
<< flush;
return 0;
}
try {
cerr << "Parsing " << argv[1] << " ... (this might take a while)"
<< flush;
bool bIncorrectPw = false;
std::string pw;
do {
try {
if( !bIncorrectPw )
parser.ParseFile( argv[1], false );
else
parser.SetPassword( pw );
bIncorrectPw = false;
} catch( PdfError & e ) {
if( e.GetError() == ePdfError_InvalidPassword )
{
cout << endl << "Password :"******" done" << endl;
cerr << "Writing..." << flush;
PdfWriter writer( &parser );
writer.SetPdfVersion( parser.GetPdfVersion() );
if( parser.GetEncrypted() )
{
writer.SetEncrypted( *(parser.GetEncrypt()) );
}
writer.Write( argv[2] );
cerr << " done" << endl;
} catch( PdfError & e ) {
e.PrintErrorMsg();
return e.GetError();
}
cerr << "Parsed and wrote successfully" << endl;
return EXIT_SUCCESS;
}
