static VALUE
rg_can_truncate_p(VALUE self)
{
return CBOOL2RVAL(g_seekable_can_truncate(_SELF(self)));
}
bool verify_and_strip_signatures()
{
g_debug( "CHECKING SIGNATURE(S)" );
Signature::Info::List signatures;
gsize signature_length = 0;
// This means that the signatures are invalid or we had a problem
// dealing with them. If there are no signatures, this will return
// true and give us an empty list.
if ( ! Signature::get_signatures( info.source_file.c_str(), signatures, &signature_length ) )
{
return false;
}
unsigned int found = 0;
if ( signatures.empty() )
{
g_debug( " NOT SIGNED" );
}
else
{
for ( Signature::Info::List::const_iterator it = signatures.begin(); it != signatures.end(); ++it )
{
info.fingerprints.insert( it->fingerprint );
}
// Now, see how many of the required ones are found in the signatures
for ( StringSet::const_iterator it = info.required_fingerprints.begin(); it != info.required_fingerprints.end(); ++it )
{
found += info.fingerprints.count( *it );
}
}
if ( found != info.required_fingerprints.size() )
{
// Signature(s) missing
g_warning( "APP IS MISSING AT LEAST ONE REQUIRED SIGNATURE" );
return false;
}
// If there were no signatures, we are done
if ( signatures.empty() )
{
return true;
}
// Otherwise, we need to strip the signature block from the file
bool result = false;
GFile * file = g_file_new_for_path( info.source_file.c_str() );
if ( file )
{
GFileIOStream * stream = g_file_open_readwrite( file, NULL, NULL );
if ( stream )
{
GSeekable * seekable = G_SEEKABLE( stream );
if ( g_seekable_can_seek( seekable ) && g_seekable_can_truncate( seekable ) )
{
if ( g_seekable_seek( seekable, 0, G_SEEK_END, NULL, NULL ) )
{
goffset file_size = g_seekable_tell( seekable );
file_size -= signature_length;
if ( g_seekable_truncate( seekable, file_size, NULL, NULL ) )
{
g_debug( "TRUNCATING FILE TO %" G_GOFFSET_FORMAT " BYTES", file_size );
result = true;
}
}
}
g_io_stream_close( G_IO_STREAM( stream ), NULL, NULL );
g_object_unref( G_OBJECT( stream ) );
}
g_object_unref( G_OBJECT( file ) );
}
if ( ! result )
{
g_warning( "FAILED TO STRIP SIGNATURE(S)" );
}
return result;
}