Previously, extracting the XML from a database was done with the
`saveXml` attribute in the `KeePass2Reader` class.
This had several unfortunate consequences:
* The `KdbxReader` class had to import the `KdbxXmlWriter` class
in order to perform the export (bad separation of concerns);
* The CLI database unlocking logic had to be duplicated only
for the `Extract` command;
* The `xmlData` had to be stored in the `KeePass2Reader` as
a temporary result.
* Lots of `setSaveXml` functions were implemented only
to trickle down this functionality.
Also, the naming of the `saveXml` variable was not really
helpful to understand it's role.
Overall, this change will make it easier to maintain and expand
the CLI database unlocking logic (for example, adding a `--no-password`
option as requested in https://github.com/keepassxreboot/keepassxc/issues/1873)
It also opens to door to other types of extraction/exporting (for
example exporting to CSV, as requested in
https://github.com/keepassxreboot/keepassxc/issues/2572)
The Database, DatabaseWidget, and DatabaseTabWidget classes share many responsibilities in inconsistent ways resulting in impenetrable and unmaintainable code and a diverse set of bugs and architecture restrictions. This patch reworks the architecture, responsibilities of, and dependencies between these classes.
The core changes are:
* Move loading and saving logic from widgets into the Database class
* Get rid of the DatabaseManagerStruct and move all the information contained in it into the Database
* Let database objects keep track of modifications and dirty/clean state instead of handing this to external widgets
* Move GUI interactions for loading and saving from the DatabaseTabWidget into the DatabaseWidget (resolves#2494 as a side-effect)
* Heavily clean up DatabaseTabWidget and degrade it to a slightly glorified QTabWidget
* Use QSharedPointers for all Database objects
* Remove the modifiedImmediate signal and replace it with a markAsModified() method
* Implement proper tabName() method instead of reading back titles from GUI widgets (resolves#1389 and its duplicates #2146#855)
* Fix unwanted AES-KDF downgrade if database uses Argon2 and has CustomData
* Improve code
This patch is also the first major step towards solving issues #476 and #2322.
The CLI module was lacking unit test coverage and showed some severe
coding style violations, which this patch addresses.
In addition, all uses of qCritical() with untranslatble raw char*
sequences were removed in favor of proper locale strings. These are
written to STDERR through QTextStreams and support output
redirection for testing purposes. With this change, error messages don't
depend on the global Qt logging settings and targets anymore and go
directly to the terminal or into a file if needed.
This patch also fixes a bug discovered during unit test development,
where the extract command would just dump the raw XML contents without
decrypting embedded Salsa20-protected values first, making the XML
export mostly useless, since passwords are scrambled.
Lastly, all CLI commands received a dedicated -h/--help option.
This patch implements a new database wizard to guide users through the process
of setting up a new database and choosing sane encryption settings.
It also reimplements the master key settings to be more
user-friendly. Users can now add, change, or remove individual composite
key components instead of having to set all components at once. This
avoids confusion about a password being reset if the user only wants to
add a key file.
With these changes comes a major refactor of how database composite keys and key
components are handled. Copying of keys is prohibited and each key
exists only once in memory and is referenced via shared pointers. GUI
components for changing individual keys are encapsulated into separate
classes to be more reusable. The password edit and generator widgets
have also been refactored to be more reusable.
Building with -flto caught the fact that we were ignoring the return
value of readMagicNumbers(), which potentially left the value of 'sig2'
uninitialized.
Signed-off-by: Steven Noonan <steven@uplinklabs.net>
