* src/qgpgmenewcryptoconfig.cpp (QGpgMENewCryptoConfigEntry::urlValue):
Build url from local file.
(QGpgMENewCryptoConfigEntry::setURLValue): Set native seperated
path.
--
This fixes setting files through cryptoconfig on Windows.
GnuPG-Bug-Id: T3939
--
* Introduced Mocha/chai as testsuite. After development build
'npm test' should run the unit tests. Functionality exclusive to
Browsers/WebExtensions cannot be run this way, so some other testing
is still needed.
- package.json: Added required development packages
- .babelrc indirect configuration for mocha. ES6 transpiling
needs some babel configuration, but mocha has no setting for it.
- test/mocha.opts Vonfiguration for mocha runs
* Fixed errors:
- Helpers.js toKeyIdArray; isLongId is now exported
- Key.js Key constructor failed
- Message.js will not throw an Error during construction, a new
message is now created with createMessage, which can return an
Error or a GPGME_Message object
* Tests:
- test/Helpers: exports from Helpers.js, GPGME_Error handling
- test/Message: first init test with bad parameters
--
* gpgmejs_openpgpjs
- unsuported values with no negative consequences can now reject,
warn or be ignored, according to config.unconsidered_params
- cleanup of unsupported/supported parameters and TODOS
* A src/index.js init() now accepts a configuration object
* Errors will now be derived from Error, offering more info and a
stacktrace.
* Fixed Connection.post() timeout triggering on wrong cases
* Added comments in permittedOperations.js, which gpgme interactions
are still unimplemented and should be added next
--
* A timeout of 5 seconds is activated for functions that do not require
a pinentry. This definition is written to src/permittedOperations.js
* testapplication.js now alerts the proper error codes and messages.
* src/Errors.js fixed two typos in error handling
--
* Error objects will now return the error code if defined as error type
in src/Errors.js, or do a console.log if it is a warning. Errors from
the native gpgme-json will be marked as GNUPG_ERROR.
--
* src/aKey.js changed fingerprint to setter (to avoid overwrites)
* src/gpgmejs_openpgpjs.js
- Added a class GPGME_Key_openpgpmode, which allows for renaming and
deviation from GPGME.
- renamed classes *_openPGPCompatibility to *_openpgpmode. They are
not fully compatible, but only offer a subset of properties. Also,
the name seems less clunky
--
* The Connection will now be started before an object is created, to
better account for failures.
* index.js: now exposes an init(), which returns a Promise of
configurable <GpgME | gpgmeGpgME_openPGPCompatibility> with an
established connection.
* TODO: There is currently no way to recover from a "connection lost"
* Connection.js offers Connection.isConnected, which toggles on port
closing.
--
* Error handling: introduced GPGMEJS_Error class that handles errors
at a more centralized and consistent position
* src/Connection.js:
The nativeMessaging port now opens per session instead of per
message. Some methods were added that reflect this change
- added methods disconnect() and reconnect()
- added connection status query
* src/gpgmejs.js
- stub for key deletion
- error handling
- high level API for changing connection status
* src/gpgmejs_openpgpjs.js
- added stubs for Key/Keyring handling according to current
state of discussion. It is still subject to change
* src/Helpers.js
- toKeyIdArray creates an array of KeyIds, now accepting
fingerprints, GPGMEJS_Key objects and openpgp Key objects.
* Key objects (src/Key.js) Querying information about a key
directly from gnupg. Currently a stub, only the Key.fingerprint is
functional.
* Keyring queries (src/Keyring.js): Listing and searching keys.
Currently a stub.
* Compatibility class gpgme_openpgpjs offers an API that should accept
openpgpjs syntax, throwing errors if a parameter is unexpected/not
implemented
* tried to be more generic in methods
* waiting for multiple answers if 'more' is in the answer
* more consistency checking on sending and receiving
* updated the example extension
--
* lang/python/setup.py.in: Copy gpgme.h instead of parsing it.
--
The python bindings tried to parse deprecated functions
out of gpgme.h. This fails for the current gpgme.h in
that it removes an entire field in the key sig struct (_obsolete_class).
Hence, the fields were off by an int and the bindings accessed struct
members via the wrong offset. That caused python program to crash.
At least on 32bit platforms, the crash can be easily triggered by
accessing key.uids[0].signatures. On 64bit platforms the compiler
probably aligns the struct so that the missing 4 bytes are not noticed.
With this change, the python bindings will expose all functions
that gpgme exposes, including the deprecated ones.
Credits go to Justus Winter for debugging and identying the issue.
Signed-off-by: Tobias Mueller <muelli@cryptobitch.de>
GnuPG-bug-id: 3892
--
Note this code misses all the legal boilerplate; please add this as
soon as possible and provide a DCO so we can merge it into master.
I also removed the dist/ directory because that was not source code.
* Script to generate a new key with encryption subkey taking input
from interactive prompts.
* Will also take a passphrase via pinentry and uses passphrase caching
of five minutes when used in conjunction with the temp homedir
script.
* Testing the addition of a HTML header set in org-mode in order to
had RSS update links for files.
* This should work with any [X]HTML export from current versions of
Org-Mode, but if it also works on website generated pages then it'll
tick off one of the wishlist itmes.
* Script to create a temporary gnupg homedir in the user's directory
for testing or scripting purposes.
* Creates a hidden directory on POSIX systems with the correct
permissions (700).
* Creates a gpg.conf in that directory containing the same
configuration options as used in the "Danger Mouse" example in the
HOWTO with the correct permissions (600).
* Added GPGME Python bindings HOWTO in Australian/British English.
** en-US "translation" still to be done.
* Added several example scripts comprised of the "Basic Functions"
section of the HOWTO (plus the work-around at the end).
** As these scripts are very basic examples they are released under
both the GPLv2+ and the LGPLv2.1+ (just like GPGME itself).
Signed-off-by: Ben McGinnes <ben@adversary.org>
* Temporarily removing multi-key selection based examples.
* There are a few issues with getting the key selections to play
nicely with gpg.Context().keylist object types.
* Will troubleshoot them separately and restore them when that's
worked out, but I don't want these more complicated examples to
delay merging the HOWTO with master.
* Similar to group-key-selection.py, but does not use an existing
group from gpg.conf; instead takes multiple key IDs, fingerprints or
patterns on the command line and adds them to a keylist object.
* Begins to string together some of the simpler examples to do more
useful things.
* Signs and encrypts a file while encrypting to every key in a group
specified in the gpg.conf file.
* Updated usage so it only references importing the final list of
lists produced. Trying to use some of the mid-points can have
unpredictable results (this is part of the problem with work
arounds).
* Similar to encrypt file except for signing a file in normal mode.
* Noticed additional changes to be made to the howto to match this,
but they will have to wait due to a power outage (currently running
on battery and a mobile connection, but that won't last).
* Added groups selection work around code.
* Intended for use as a module to be imported by other scripts,
usually with "from groups import group_lists" or "from groups import
group_lines" or similar.
* Example to sign and encrypt a file.
* Similar to encrypt-file.py except all keys are considered trusted
and signs with the default key.
* Also encrypts to the default key.
* Example to encrypt a file to a single key.
* Takes key ID and/or fpr as a CLI parameter.
* Takes path and filename as a CLI parameter.
* Encrypts to specified key only, no signing and writes the output in
both ASCII armoured and GPG binary formats with output filenames
based on input filename.
* Added the same license as used with the HOWTO.
* Since these examples are so basic, they'll be dual licensed the same
as GPGME itself (otherwise it would slip too dangerously against the
need for permissive licensing of crypto libraries).
* Added reference to location where all the examples included in the
HOWTO will be available as executable scripts.
* Included a short README file in that location.
* Since we don't want to encourage accessing the low level functions
(e.g. op_encrypt), but since this example can still be useful to
understand, renaming it and will add new encryption examples to
match the instructions in the HOWTO.
* Adjusted the python-gnupg so the comments regarding insecure
invocation of commands via subprocess (shell=True) were a major
historical issue and not a a current issue.
* Not including Vinay Sajip's requested change to say it is now secure
since no audit of the current code base has been performed and my
last major inspection of that code was around the time I first
ported PyME to Python 3 in 2015.
* Checked off several points of howto coverage as completed.
* Reorganised to move S/MIME coverage to its own separate group of tasks.
* Noted only revocation remains for howto completion.
* moved single encrytion examples up to the first ones, pending merge
and major cut.
* This is basically just to make future checks of revisions a little easier.
* Fixed a minor typographic error.
* Bumped version number in preparation for merge with master.
* While there are probably a few more things worthy of being added
(mainly how to revoke things), this document is essentially ready
for publication now.
Signed-off-by: Ben McGinnes <ben@adversary.org>
* Added a new user ID for Danger Mouse.
* Removed the empty entry for key preferences since that is handled
through gpg.conf and/or editing the key directly.
* Clarified which English dialects this is written in.
* Translating to American can happen *after* it's done.
** The Yank version would probably want to change some of the examples
anyway.
* Began the description for normal/default signing.
* Added a section on key selection.
* Included recommendation for using fingerprint when selecting one
specific key.
* Also included the most ironically amusing example of multiple key
selection in a GPG guide. Hey, it's public data ... (heh).
* Added explanation of the ascendance of Python 3 over Python 2 in the
guide to the intro.
* Expanded key selection description so people know what not to
include regarding key IDs with this key selection method.
* During the course of working out the updated signature methods,
determined that key selection (including counting) will beed to be
presented before the basic functions.
* Moved "working with keys" up.
* Added a miscellaneous work-arounds section at the end.
* Included code in said miscellaneous section for accessing the groups
specified in a gpg.conf file.
* It's a bit ugly since it does require subprocess (but not call,
Popen or shell access and only accesses one command).
* updated multi-encryption final example to be complete.
* second example shows most likely method of reading plaintext.
* updated example filenames to stick with running gag
(i.e. secret_plans.txt).
* error corrections.
* multiple typesetting fixes only required due to certain archaic
eccentricities of LaTeX.
* a couple of minor python PEP8 compliance corrections.
* Added a more complicated encryption example with a few variations on
the encryption method to account for untrusted recipient keys,
signing or not signing, including or excluding default keys and so
on.
* Switched from links to some external docs to using footnotes where
necessary.
* Ideally the howto should be as stand alone as possible.
* Also it makes it difficult to convert to another format for
proof-reading if there are links that the conversion can't find.
* Wrote the text description explaining each step in the most basic
encryption operation.
* Will need to include additional examples for encrypting to multiple
recipients using Context().encrypt instead of Context().op_encrypt.
* Added all four signing code examples that are most likely to be
used: armoured, clearsigned, detached armoured and detached binary.
* May remove some examples and just discuss the differences, but it
depends on the way the text is filled out.
* Added sample code for encrypting some text to a single key.
* Basically I'm just lifting existing production code and changing the
key IDs from mine to "0x12345678DEADBEEF" for these first few
examples.
* I'll fill in the text description after.
* Note: due to my regional location, I might split some tasks into
more commits in order to be sure no work gets lost in case of
emergency (or to put it another way: I know Telstra too well to
trust them).
* Added a section for those pythonistas who are too used to web
programming. Stressed that it's not simply not RESTful, it's not
even REST-like.
* Letting me move on to drawing a very loose parallel between a
session and a context. The differences should become obvious in the
subsequent sections.
* Some instructions to include are fairly obvious; as with encryption,
decryption and signature verification.
* Some are a little less obvious.
* This includes the requests received to specifically include subkey
management (adding and revoking subkeys on a primary key that's
being retained.
* Added the UID equivalents to the list, as well as key selection
matters (and may or may not include something for handling group
lines since that involves wrapping a CLI binary).
* Key control documentation and examples requested by Mike Ingle of
confidantmail.org.
* removed one bit of whitespace.
* Marked up references to gpgme.h.
* Fixed one spelling error.
* Removed py2.6 from python search order since even if it is
supported, it shouldn't be encouraged.
* Started work on the GPGME Python bindings HOWTO.
* 1,050 words to begin with at approx. 7.5KB.
* Got as far as installation.
* Includes instruction not to use PyPI for this.
* Set LaTeX headers to enable ligatures and a 12pt font by default.
* Paper size left for regional defaults.
* Using XeLaTeX for easier font control.
* Using default LaTeX font of Latin Main, but that's easy enough to change.
* The developers of Phabricator, the web front-end on dev.gnupg.org
have not implemented renderers for Markdown, Org-Mode or any other
common markdown like language.
* They also refuse to do so.
* Instead they re-invented the wheel and implemented their own version
of Markdown-like thing which is incompatible with everything else.
It is called Remarkup.
* The developers of Phabricator and Remarkup have refused to provide
conversion tools to move files to/from any format to/from Remarkup.
* They expect everyone to learn their new favourite pet project.
* Remarkup may or may not display Org Mode files, but if so then it is
likely to only want to do so as plain text.
* There is an unaffiliated and unofficial project to convert Github
Markdown to Remarkup via Pandoc. This might be adapted for our use,
but requires testing.
* Until then exporting from Org Mode to UTF-8 text is likely the least
worst plan.
* Which means renaming this file to README.org first.
* Removed Markdown style heading underlining.
* Removed in-line file type declaration (which is not correctly parsed
by the web interface on dev.gnupg.org).
* Fixed or updated the most fundamental errors.
* Also included some details on which modules are available on PyPI,
as well as what happened to the PyME commit log.
* Updated TODO.
* The entirety of the old TODO has been replaced with either more
relevant tasks or goals for the examples and a more measured
approach to the docs and why, in this project, Org Mode trumps reST,
even though it's Python through and through.
* lang/qt/src/qgpgmequickjob.cpp (addSubkeyWorker)
(createWorker): Use toMSecsSinceEpoch instead toSecsSinceEpoch.
--
toSecsSinceEpoch was only introduced in Qt 5.8.
* src/gpgsignkeyeditinteractor.cpp (SignKeyState): Add second
CONFIRM state.
(makeTable): Properly handle local_promote_okay.
(action): Handle CONFIRM2.
--
This fixes changing a local signature to a "public" signature.
GnuPG-Bug-Id: T1649
* lang/python/gpgme.i: copied signature from gpgme.h and defaulted the
value to SEEK_SET.
* lang/python/tests/t-data.py: Added a test for no second argument
--
Having to import the os package when wanting to read a Data object is a
slight annoyance. With SWIG, we can define default parameters. This
change defaults the whence argument to SEEK_SET which is how StringIO
and BytesIO behave.
Signed-off-by: Tobias Mueller <muelli@cryptobitch.de>
* lang/qt/src/qgpgmequickjob.cpp,
lang/qt/src/qgpgmequickjob.h,
lang/qt/src/quickjob.h: New.
* lang/qt/src/Makefile.am,
lang/qt/src/protocol.h,
lang/qt/src/protocol_p.h,
lang/qt/src/job.cpp: Update accordingly.
--
Keeping it in line with the Job for everything pattern.
Although it's reduced to one job for four commands as
the commands all behave the same.
* lang/python/tests/Makefile.am: Distinguish target and path.
* tests/gpg/Makefile.am: Ditto.
* tests/gpgsm/Makefile.am: Ditto.
--
GNU Make is powerful enough to match path to target (and vice versa),
but BSD make is not.
GnuPG-bug-id: 3056
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* lang/qt/src/dataprovider.cpp (blocking_read): Keep
reading if process is not atEnd.
--
This fixes a regression in Kleopatra that uses this dataprovider
to chain the gpgtar process to the encryption / signing.
* NEWS: Update.
* lang/python/src/core.py (Context.__read__): New helper function.
(Context.encrypt): Attach partial results to exceptions.
(Context.decrypt): Likewise.
(Context.sign): Likewise.
(Context.verify): Likewise.
* lang/python/src/errors.py (GpgError): Move the core of GPGMEError to
this class, add a nicer interface for it. This makes the errors
thrown by this library more uniform, and allows us to track the
underlying error in synthesized high-level errors.
(GPGMEError): Simplify.
(...): Make sure to call the parent classes' constructor in all other
classes.
--
Attach partial results to errors. Some operations return results even
though they signal an error. Of course this information must be taken
with a grain of salt. But often, this information is useful for
diagnostic uses or to give the user feedback. Since the normal
control flow is disrupted by the exception, the callee can no longer
return results, hence we attach them to the exception objects.
GnuPG-bug-id: 3271
Signed-off-by: Justus Winter <justus@g10code.com>
* NEWS: Update.
* lang/cpp/src/decryptionresult.cpp (DecryptionResult::isDeVs): New
function.
* lang/cpp/src/decryptionresult.h (DecryptionResult::isDeVs): New
prototype.
* lang/cpp/src/verificationresult.cpp (Signature::isDeVs): New
function.
* lang/cpp/src/verificationresult.h (Signature::isDeVs): New
prototype.
* lang/python/src/results.py (DecryptResult): Turn field 'is_de_vs'
into a boolean.
(Signature): Likewise.
* src/decrypt.c (_gpgme_decrypt_status_handler): Handle the new
compliance status line.
* src/verify.c (_gpgme_verify_status_handler): Likewise.
* src/gpgme.h.in (gpgme_status_code_t): Add new status codes for the
new status lines.
* src/keylist.c (parse_pub_field18): Move function to 'util.h'.
(keylist_colon_handler): Adapt callsites.
* src/status-table.c (status_table): Add new status lines.
* src/util.h (PARSE_COMPLIANCE_FLAGS): New macro. This used to be
'parse_pub_field18', but turned into a macro to make it polymorphic.
--
When decrypting data and verifying signatures, report whether the
operations are in compliance with the criteria for data classified as
VS-NfD. This information can the be presented to the user.
GnuPG-bug-id: 3059
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/setup.py.in: Prepend the Python build dir to the list of
include directories so that it takes precedence over any other include
directory.
--
Fixes the build in case an older 'gpgme.h' is installed and is picked
up by the compiler when compiling the Python module.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/tests/Makefile.am (pubring-stamp): Do not depend on the
configuration files, this can trigger superfluous rebuilds.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/tests/Makefile.am: Kill all previously running daemons
before creating the private key store.
* lang/qt/tests/Makefile.am: Likewise.
* tests/gpg/Makefile.am: Likewise.
* tests/gpgsm/Makefile.am: Likewise.
--
Now that the daemons sockets are no longer created in the GNUPGHOME,
we cannot rely on cleaning the build directory to make sure they are
shut down. Therefore, we explicitly kill any running daemons when
creating the test environment.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/tests/Makefile.am: Create test environment as part of
'make all'.
* tests/gpg/Makefile.am: Make sure the private keystore is created
first.
* tests/gpgsm/Makefile.am: Create test environment as part of
'make all'. Make sure the private keystore is created
first.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/qt/src/qgpgmenewcryptoconfig.cpp: Include functional.
--
This is intended to fix compilation against the c++ stdlib from
Gentoo / GCC 7.
Patch provided by Martin Väth.
GnuPG-Bug-Id: T3151
* lang/qt/src/decryptjob.h,
lang/qt/src/decryptverifyjob.h,
lang/qt/src/signencryptjob.h,
lang/qt/src/verifydetachedjob.h,
lang/qt/src/verifyopaquejob.h: Undeprecate ByteArray based API.
--
While an IODevice may be more performant the ByteArray API is
a very easy way to get started with QGpgME as it allows you
basically to encrypt / decrypt any QString.
This also fixes a ton of deprecation warnings in KDE where this
API is used all over the place.
* lang/qt/tests/t-encrypt.cpp, lang/qt/tests/t-tofuinfo.cpp:
Only use exported API.
--
With the Job::Context hack we no longer need to use internal API.
* lang/python/tests/support.py (have_tofu_support): New function.
* lang/python/tests/t-quick-key-manipulation.py: Skip TOFU test if not
supported by GnuPG.
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/tests/run-tests.py: Add --python-libdir optional
parameter.
--
This will make the python tests usable for downstream that build python
module outside of autotools build system.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* lang/python/setup.py.in: Read gpg-error.h using the pre-processor.
--
The libgpg-error may be installed in multilib configuration in which
there is a wrapper header at /usr/include that includes the actual
header at /usr/include/*. This causes invalid errors.i generation.
Let the pre-processor extract the header content instead reading it
explicitly.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* configure.ac: Remove PYTHON_VERSIONS subst.
* lang/python/Makefile.am: Use basename of python as builddir prefix.
* lang/python/tests/run-tests.py: Likewise.
--
Two variables needs be at sync PYTHONS and PYTHON_VERSIONS, these may go
out of sync in some cases, for example in Gentoo where default python is
3.4 we get:
PYTHON='/usr/bin/python2'
PYTHONS='/usr/bin/python /usr/bin/python2'
PYTHON_VERSIONS='2.7 3.4'
We can use the basename of the python interpreter to achieve similar
effect without having to sync indexes between these two variables.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* tests/gpg/Makefile.am: Use BUILT_SOURCES instead of check-local
and initial.test.
* lang/qt/tests/Makefile.am: Ditto.
--
This fixes "make dist" failure when source tree is clean:
git clean -dxf
autoreconf -ivf
./configure
make dist
BUILT_SOURCES should be used when file as generated without explicit
dependency. The check-local is all-am dependency, this means that it
will be resolved also in "make dist".
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* lang/python/setup.py.in: Do not parse arguments.
--
The distutils settings can come from either command-line or
configuration file. Parsing parameters is not working in all cases.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* lang/python/gpg/version.py.in: Rename to lang/python/version.py.in.
configure.ac: Generate version.py.in in lang/python.
* lang/python/MANIFEST.in: Include version.py explicitly.
* lang/python/gpg: Rename to 'src'.
* lang/python/Makefile.am: Do not copy source files, do not use absolute
directories, support lib64 in uninstall, clean also dist directory, use
symlink for gpg src.
* lang/python/setup.py.in: Use builddir, copy sources into builddir,
copy version.py into module.
--
Simplify build to symlink the gpg sources into builddir instead of
copying. This requires handling of version.py as generated file.
In addition apply some cleanups: Drop the absolution pathes, clean the
dist directory as well, support lib64 for sitelib at uninstall.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* lang/python/gpgme-h-clean.py: Delete file.
* lang/python/MANIFEST.in: Adapt accordingly.
* lang/python/Makefile.am (EXTRA_DIST): Likewise.
(COPY_FILES_GPG): Bring variable back.
(copystamp): Copy files.
(clean-local): Delete copied files.
(install-exec-local): Do not create and install list of installed
files.
(uninstall-local): Instead, create some explicit rules to uninstall
the extension.
* lang/python/setup.py.in: Parse arguments. Locate files either in
the source directory, or in the build base directory. Inline the code
from 'gpgme-h-clean.py'. Copy 'helpers.c', add source directory as
include directory.
Fixes-commit: 801d7d8c5d
Signed-off-by: Justus Winter <justus@g10code.com>
* lang/python/setup.py.in: Generate files within BuildExtFirstHack
adjust build flags at this point instead of global.
* lang/python/Makefile.am: Remove logic of separate source directory per
python version in favor of build directory.
* lang/python/tests/run-tests.py: Adjust build directory location.
--
Generate files into build directory, leaving the source directory clean.
Use the same source directory for multiple python version build. Result
of 'prepare' target is a standard distutil layout that can be used
easily by downstream to build all python targets in-place.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
* lang/qt/src/dn.cpp (parse_dn_part): Add fmt argument instead of
using name directly.
GnuPG-Bug-Id: 3023
Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>
Signed-off-by: Andre Heinecke <aheinecke@intevation.de>
* lang/qt/src/t-tofuinfo.cpp (TestTofuInfo::testSupported): Treat
it as unsupported if secret keylisting already fails.
--
The likely cause of this is that the agent can't be started
because the trust model is unsupported. Other tests check
that keylisting actually works.
* lang/python/Makefile.am: Fix 'prepare' target.
* lang/python/setup.py.in: Use 'abs_top_builddir' instead of guessing
the path.
--
'prepare' will prepare target at PREPAREDIR. The automake integration
will also make use of prepare target. Downstream distributors may
also make use of prepare target.
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>