Results returned by the GPGME are fragile, i.e. they are only valid
until the next operation is performed in the context.
We cannot arbitrarily constrain the lifetime of Python objects, we
therefore create deep copies of the results.
* lang/python/gpgme.i (gpgme_tofu_info_t): Turn these into a list.
(gpgme_*_result_t): Create deep copies of these objects.
* lang/python/helpers.c (pygpgme_wrap_fragile_result): New function.
* lang/python/helpers.h (pygpgme_wrap_fragile_result): New prototype.
* lang/python/pyme/results.py: New file.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/pyme/core.py: Rename '_getctype' to '_ctype' and turn it
into a string. Likewise rename '_getnameprepend' to '_cprefix'.
* lang/python/helpers.c: Adapt accordingly.
Signed-off-by: Justus Winter <justus@g10code.com>
Simplify how the lifetime of callback arguments is managed.
* lang/python/gpgme.i (gpgme_edit_cb_t): Check arguments.
(PyObject_p_p, void_p_p): Drop rather dangerous interface.
(pygpgme_unwrap_gpgme_ctx_t): New function.
* lang/python/helpers.c (pygpgme_clear_generic_cb): Drop dangerous
function.
(pyPassphraseCb): Assert contract.
(pygpgme_set_passphrase_cb): Use Python's calling convention so that
we can raise exceptions. Hand in 'self', get the wrapped object, and
simply store the hook data as attribute of the wrapper object.
(pyProgressCb, pygpgme_set_progress_cb): Likewise.
(pygpgme_set_status_cb): Likewise.
(pygpgme_data_new_from_cbs): Likewise.
* lang/python/helpers.h (pygpgme_clear_generic_cb): Drop prototype.
(pygpgme_set_passphrase_cb): Update prototype.
(pygpgme_set_progress_cb): Likewise.
(pygpgme_set_status_cb): Likewise.
(pygpgme_data_new_from_cbs): Likewise.
(pygpgme_unwrap_gpgme_ctx_t): New prottotype.
* lang/python/pyme/core.py (Context, Data): Update callsites.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/Makefile.am: Add the toplevel source directory to CFLAGS
when compiling the bindings so that we can use private header files.
* lang/python/gpgme.i (gpgme_data_t): Rework the object wrapping. Do
not create a Python wrapper object, merely a gpgme_data_t object, and
keep references to buffer objects, if any. If necessary, update the
buffer after the function call.
(pygpgme_wrap_gpgme_data_t): New function.
* lang/python/helpers.c (object_to_gpgme_data_t): Rework object
wrapping. Also wrap objects implementing the buffer protocol.
* lang/python/helpers.h (object_to_gpgme_data_t): Update prototype.
(pygpgme_wrap_gpgme_data_t): New prototype.
* lang/python/tests/t-idiomatic.py: Demonstrate this.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/gpgme.i (gpgme_data_t): Use new function to create
wrapper objects if necessary, and deallocate them after the function
call.
* lang/python/helpers.c (object_to_gpgme_data_t): New function.
* lang/python/helpers.h (object_to_gpgme_data_t): New prototype.
* lang/python/tests/Makefile.am (pytests): Add new test.
* lang/python/tests/t-idiomatic.py: New file.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/Makefile.am: Pass CFLAGS to python build system.
* lang/python/helpers.c (pyPassphraseCb): Use correct type for length.
(pygpgme_data_new_from_cbs): Drop unused variable.
Signed-off-by: Justus Winter <justus@g10code.com>
Handing a reference to the wrapper object created a non-trivial
circular reference that Pythons garbage collector is unable to break.
Explicitly break it by using a weak reference.
* lang/python/helpers.c (pygpgme_stash_callback_exception): Retrieve
object from weak reference.
* lang/python/pyme/core.py (Context.__del__): Free status callback.
(Context.set_passphrase_cb): Use a weak reference.
(Context.set_progress_cb): Likewise.
(Context.set_status_cb): Likewise.
(Context.op_edit): Likewise.
Signed-off-by: Justus Winter <justus@gnupg.org>
* lang/python/helpers.c (pyPassphraseCb): Cope with 'uid_hint' being
NULL, convert it to an Unicode object, and cope with the callback
returning both Unicode and bytes objects.
Signed-off-by: Justus Winter <justus@gnupg.org>
