* src/engine-gpg.c (struct engine_gpg): New field
override_session_key.
(gpg_release): Free that field.
(gpg_decrypt): With gnupg 2.1.16 use --override-session-key-fd.
* tests/run-decrypt.c (main): Fix setting over the override key.
--
Note that this works only with gnupg 2.1.16 and later.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/gpgme.c (gpgme_set_ctx_flag): Add flags "export-session-key" and
"override-session-key".
(gpgme_get_ctx_flag): Ditto.
(gpgme_set_export_session_keys): Remove.
(gpgme_get_export_session_keys): Remove.
* src/gpgme.def, src/libgpgme.vers: Remove them.
* src/context.h (struct gpgme_context): Add field
override_session_key.
* src/decrypt-verify.c (decrypt_verify_start): Pass
override_session_key value to the engine.
* src/decrypt.c (decrypt_start): Ditto.
* src/engine.c (_gpgme_engine_op_decrypt): Ditto.
(_gpgme_engine_op_decrypt_verify): Ditto.
* src/engine-backend.h (struct engine_ops): Extend DECRYPT and
DECRYPT_VERIFY_START with override_session_key.
* src/engine-uiserver.c (_uiserver_decrypt): Add stub arg
override_session_key.
(uiserver_decrypt): Ditto.
(uiserver_decrypt_verify): Ditto.
* src/engine-gpgsm.c (gpgsm_decrypt): Ditto.
* src/engine-gpg.c (gpg_decrypt): Add arg override_session_key and set
corresponding gpg option.
* tests/run-decrypt.c (print_result): Print the session key if
available.
(main): Add options --export-session-key and --override-session-key.
--
To keep the number of context manipulation functions at bay, this
patches removes the just added gpgme_set_export_session_keys and
gpgme_get_export_session_keys by flags for the generic context
function.
The patch also implements the --override-session-key feature.
GnuPG-bug-id: 2754
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/gpgme.h.in (gpgme_get_ctx_flag): New.
* src/gpgme.c (gpgme_set_ctx_flag): Move down the file and add a trace
statement.
(gpgme_get_ctx_flag): New.
* src/gpgme.def, src/libgpgme.vers: Add new interface.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/gpgme.c (gpgme_set_export_session_keys): New function.
(gpgme_get_export_session_keys): New function.
* src/gpgme.h.in (struct _gpgme_op_decrypt_result): Add session_key
member.
(gpgme_{set,get}_export_session_keys): Declare new functions.
* src/libgpgme.vers, src/gpgme.def: Export new functions in shared
object.
* src/engine.h: (_gpgme_engine_op_decrypt) Add export_session_key
parameter.
(_gpgme_engine_op_decrypt_verify): Add export_session_key parameter.
* src/engine-backend.h: (struct engine_ops): Change function
pointer declarations to match.
* src/context.h (struct gpgme_context): Add export_session_keys member.
* src/decrypt.c (release_op_data): Free result.session_key.
(_gpgme_decrypt_status_handler): Store a copy of the exported session
key.
(decrypt_start): Pass export_session_keys from the context.
* src/decrypt-verify.c (decrypt_verify_start): Pass
export_session_keys from context.
* src/engine.c (_gpgme_engine_op_decrypt): Pass through
export_session_key flag.
(_gpgme_engine_op_decrypt_verify): Pass through export_session_key
flag.
* src/engine-gpg.c (gpg_decrypt): If export_session_key is set, add
--export-session-key to argument list.
* src/engine-gpgsm.c (gpgsm_decrypt): Ignore export_session_key for
now, since gpgsm offers no such mechanism.
* src/engine-uiserver.c (_uiserver_decrypt): If export_session_key is
set, add --export-session-key flag to cmd.
* doc/gpgme.texi: Document new functions and session_key member of
decrypt_result_t.
* doc/uiserver.texi: Add --export-session-key flag to DECRYPT command.
--
gpg(1) documents session key export as useful for key escrow, and is
rightly dubious of that use case. However, session key export is also
useful in other use cases. Two examples from MUA development (where
this functionality would be specifically useful to me right now):
* If the MUA stores a local copy of the session key upon decrypting
the message, it can re-decrypt the message without expensive
asymmetric operations. When rendering a thread with dozens of
encrypted messages, this can represent a significant speedup.
* A user may have expired encryption-capable secret key material,
along with many messages encrypted to that material. If she stores
the session keys for those messages she wants to keep, she can
destroy her secret key material and make any messages she has
deleted completely unrecoverable, even to an attacker who gets her
remaining secret keys in the future.
This patchset makes a two specific implementation decisions that could
have gone in different ways. I welcome feedback on preferred outcomes.
0) session key representation: we currently represent the session key
as an opaque textual string, rather than trying to provide any
sort of in-memory structure. While it wouldn't be hard to parse
the data produced by gpg's --export-session-key, I chose to use
the opaque string rather than lock in a particular data format.
1) API/ABI: i've added a member to gpgme_op_decrypt_result_t. This
has the potential to cause an out-of-bound memory access if
someone uses code compiled against the newer verision, but linked
at runtime against an older version. I've attempted to limit that
risk by documenting that users must verify
gpgme_get_export_session_keys() before accessing this new struct
member -- this means that code expecting this capability will
require the symbol at link-time, and will refuse to link against
older versions.
Another approach to solving this problem would be to avoid
modifying gpgme_op_decrypt_result_t, and to introduce instead a
new function gpgme_op_session_key(), which could be called in the
same places as gpgme_op_decrypt_result(). Depending on the
representation of the session key, this might introduce new
memory-management burdens on the user of the library, and the
session key is certainly part of a decryption result, so it seemed
simpler to go with what i have here.
If anyone has strong preferences that these choices should be solved
in a different way, i'm happy to hear them.
Additionally, I note that i'm also still pretty unclear about how the
"UI Server" fits into this whole ecosystem. In particular, I don't
know whether it's kosher to just add an --export-session-key flag to
the DECRYPT operation without actually having implemented it anywhere,
but i don't see where i would actually implement it either :/
If this patch (or some variant) is adopted, i will supply another
patch that permits offering a session key during decryption (e.g. "gpg
--override-session-key"), but I wanted to get these implementation
choices ironed out first.
Gnupg-Bug-Id: 2754
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
On the concern of adding a new field to a structure: It may not be
clearly documented but we don't expect that a user ever allocates such
a structure - those result structure may only be created bu gpgme and
are read-only for the user. Adding a new member constitutes a
compatible ABI change and thus an older SO may not be used by code
compiled with a header for the newer API. Unless someone tinkers with
the build system, this should never happen. We have added new fields
to result structure may times and I can't remember any problems.
- wk
* src/gpgme.c (gpgme_set_armor, gpgme_set_textmode,
gpgme_set_offline): Ensure that non-zero values actually set the
appropriate internal bit.
--
The documentation for these functions says things like "disabled if
YES is zero, and enabled otherwise", where YES is an integer.
However, if you pass an even integer, it will be aliased back to 0
because the context member variables are declared as single bits.
This should make the implementation match the documentation.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
* src/posix-io.c (_gpgme_io_select): Return EMFILE instead of EBADF.
--
Also EBADF seem more correct, EMFILE (Too man open files) gives
a clearer message to the user that there are somehow too many files
open. The problem can be exhibited by running lots of threads,
We should eventually move to poll but that would be a large change and
so we better fix it with the planned migration of the I/O subsystem to
libgpgrt (currently known as libgpg-error).
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/keylist.c (op_data_t): Add field keydb_search_err.
(keylist_status_handler): Parse STATUS_ERROR into that var.
(gpgme_op_keylist_next): Use that err instead of GPG_ERR_EOF.
--
With a recent GnuPG version this allows to detect a keyring with wrong
permissions (i.e. no read access). GPG_ERR_OPEN_KEYRING will be
returned instead of GPG_ERR_EOF.
Signed-off-by: Werner Koch <wk@gnupg.org>
* configure.ac: Require libgpg-error 1.17. No longer
check for pthread.
* doc/gpgme.texi: Document removed neccessity for thread
safe gpgme flavours.
* src/sema.h (DEFINE_GLOBAL_LOCK),
(DEFINE_STATIC_LOCK, INIT_LOCK, DECLARE_LOCK)
(DESTROY_LOCK, LOCK, UNLOCK): Change to gpgrt equivalents.
* src/posix-sema.c, src/w32-sema.c: Removed.
* src/Makefile.am: Remove libpthread and
Update accordingly.
* src/ath.c, src/ath.h (ath_mutex_init)
(ath_mutex_destroy, ath_mutex_lock, ath_mutex_unlock): Removed.
* src/ath.h (ATH_MUTEX_INITIALIZER): Removed.
* src/version.c (do_subsystem_inits): sema_subsystem_init is
no longer required.
* tests/gpg/Makefile.am: Add new threading tests.
(t_thread1_LDADD, t_cancel_LDADD):
Use just gpgme.
* tests/gpg/t-thread-keylist-verify.c,
tests/gpg/t-thread-keylist.c: New.
* src/gpgme-config.in: Use -lgpgme for thread-model pthread.
--
Using gpgrt locks instead of pthread locks removes
the neccessity to link pthread directly to gpgme and
have a different, thread safe flavor of gpgme. Now
gpgme is thread-safe if the conditions mentioned
in the doc are met.
As the cpp bindings linked against libgpgme
and not libgpgme-pthread this fixes threading problems
with them.
libgpgme-pthread is removed but gpgme-config still supports
--thread=pthread for compatibility with find scripts.
* src/w32-io.c (fd_table_lock): New.
(new_fd): Lock allocation of a new slot.
(release_fd): Lock deallocation of a slot.
--
Note that we lock only the allocation but not the sanitiy checks we do
further down in the code.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/w32-util.c (find_program_at_standard_place): Use access to check
whether the binary is at CSIDL_PROGRAM_FILES before testing
CSIDL_PROGRAM_FILESX86.
--
Suggested-by: ticho
Fixes-commit: a82e9b182f
GnuPG-bug-id: 2814
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/w32-util.c (find_program_in_dir): Fix call to _gpgme_strconcat.
--
This fixes a crash introduced by dc39552d0 because it tried
to concat a strlen.
* src/b64dec.c, src/mbox-util.c, src/mbox-util.h: These three files
are explicitly licensed under LGPL, but their comments suggest that
details about the warranty can be found in the GPL. Adjust comments
to refer to the correct license.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
* src/conversion.c: Include stdarg.h.
(do_strconcat): New.
(_gpgme_strconcat): New.
* src/util.h: Provide fallback for GPGRT_ATTR_SENTINEL.
(_gpgme_strconcat): New with sentinel.
* src/w32-util.c (find_program_in_dir): Replace malloc and stpcpy by
_gpgme_strconcat.
(find_program_at_standard_place): Ditto.
(_gpgme_set_default_gpg_name): Ditto.
(_gpgme_set_default_gpgconf_name): Ditto.
(_gpgme_mkstemp): Ditto.
(_gpgme_set_override_inst_dir): Repalce malloc and strcpy by strdup.
--
The function has been taken from gnupg/common/stringhelp.c and license
changed to LPGLv2.1+. I am the original author of that code.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/engine-gpg.c (gpg_new): Add --exit-on-status-write-error if the
engine version is latest enough to expect progress output from gpg.
--
GnuPG-bug-id: 1415
Signed-off-by: Daiki Ueno <ueno@gnu.org>
Changed the version test from the patch to use the newer
have_gpg_version.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/moc_kdpipeiodevice.cpp: Removed.
* src/Makefile.am (EXTRA_DIST): Remove moc_kdpipeiodevice.cpp.
--
This file was overlooked in 58ed9c17 which removed the unused
and obsolete w32-qt code. See lang/qt QIODeviceDataProvider which
replaced kdpipeiodevice.
* src/engine-assuan.c (llass_new): Update --ttyname from GPG_TTY.
* src/engine-g13.c (g13_new): Ditto.
* src/engine-gpg.c (gpg_new): Ditto.
* src/engine-uiserver.c (uiserver_new): Ditto.
* src/engine-gpgsm.c (gpgsm_new): Ditto.
--
Useful when no DISPLAY is set and there is no attached terminal to the
current process.
Signed-off-by: Ben Kibbey <bjk@luxsci.net>
* src/gpgme.h.in (_GPGME_DEPRECATED): Change to take versio numbers
for documentation. Change all places.
(_GPGME_DEPRECATED_OUTSIDE_GPGME): Ditto.
* lang/python/gpgme-h-clean.py: Adjust RE.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/status-table.c (_gpgme_status_to_string): Return "" for EOF.
* src/engine-gpg.c (read_status): Ditto. The old code accidently used
GPGME_STATUS_EOF which is the integer 0 and neiteyr NULL nor a string.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/gpgme.h.in (gpgme_interact_cb_t): New.
(GPGME_INTERACT_CARD): New.
(gpgme_op_interact_start, gpgme_op_interact): New.
* src/libgpgme.vers, src/gpgme.def: Add new functions.
* src/edit.c (op_data_t): Rename fnc to fnc_old and change users. Add
fnc.
(edit_status_handler): Call old or new callback.
(command_handler): Ditto.
(interact_start): New.
(gpgme_op_interact_start, gpgme_op_interact_start): New.
* src/status-table.c (_gpgme_status_to_string): New.
* tests/gpg/t-edit.c (edit_fnc): Rename to interact_fnc and change
type of STATUS. Use gpgme_io_writen.
(main): s/gpgme_op_edit/gpgme_op_interact/.
--
This change will eventually allow us to remove all those status codes
from gpgme.h.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/edit.c (command_handler): Handle special error code.
* src/engine-gpg.c (read_status): Ditto.
* src/engine-gpgsm.c (status_handler): Ditto.
* src/engine-uiserver.c (status_handler): Ditto.
* src/util.h (GPG_ERR_FALSE): Define for older libgpg-error versions.
--
An edit callback may now simply return GPG_ERR_FALSE to indicate that
it did not handled the status code. GPGME will the do the appropriate
action, which is to send an empty line.
Note that it is highly unlikely that GPG_ERR_FALSE has ever been used
by an application as return value from an edit interactor.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/engine-backend.h (engine_ops): Change prototype of genkey.
* src/engine-gpgsm.c (gpgsm_genkey): Change accordingly.
* src/engine-gpg.c (gpg_genkey): Change it to a dispatcher.
(gpg_createkey_from_param): New for the old functionality.
(gpg_createkey_legacy): New. Stub for now.
(gpg_createkey): New.
(gpg_addkey): New. Stub for now.
(gpg_adduid): New. Stub for now.
* src/engine.c (_gpgme_engine_op_genkey): Add new args.
* src/genkey.c (op_data_t): Add field ERROR_CODE.
(parse_error): New.
(genkey_status_handler): Parse ERROR status line.
(genkey_start): Use NULL/0 for the new args.
(createkey_start): New.
(gpgme_op_createkey_start, gpgme_op_createkey): New.
* src/gpgme.def, src/libgpgme.vers: Add gpgme_op_createkey_start and
gpgme_op_createkey.
* src/gpgme.h.in (_gpgme_op_genkey_result): Add fields PUBKEY and
SECKEY.
(GPGME_CREATE_SIGN): New.
(GPGME_CREATE_ENCR): New.
(GPGME_CREATE_CERT): New.
(GPGME_CREATE_AUTH): New.
(GPGME_CREATE_NOPASSWD): New.
(GPGME_CREATE_SELFSIGNED): New.
(GPGME_CREATE_NOSTORE): New.
(GPGME_CREATE_WANTPUB): New.
(GPGME_CREATE_WANTSEC): New.
(GPGME_CREATE_FORCE): New.
* tests/run-genkey.c: New.
* tests/Makefile.am (noinst_PROGRAMS): Add it.
--
This function uses the new --quick-gen-key API of gpg. A limited
compatibility mode to use older gpg versions and gpgsm will eventually
be provided. Not all flags are currently implemented.
./run-genkey --unprotected --force test@example.com
Create a new standard key with the given user id. --force is used to
allow creating more than one key with that user id in the keyring.
./run-genkey --unprotected --force \
test@example.com default default 2145826800
Creates a new standard key with an expiration date of 2037-12-31.
./run-genkey --unprotected --force \
test@example.com future-default default 2145826800
Create a standard key using the fugure default algorithms.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/gpgme.h.in (struct _gpeme_tofu_info): Rename FIRSTSEEN to
SIGNFIRST and LASTSEEN to SIGNLAST. Add ENCRFIST and ENCRLAST.
* src/keylist.c (parse_tfs_record): Parse to ENCRFIRST and ENCRLAST.
* src/verify.c (parse_tofu_stats): Ditto.
* tests/run-keylist.c (main): Adjust and print encrypt stats.
* tests/run-verify.c (print_result): Ditto.
* lang/cpp/src/tofuinfo.h (TofuInfo): Rename firstSeen to signFirst
and lastSeen to signLast. Add encrCount, encrFirst and encrLast.
* lang/cpp/src/tofuinfo.cpp (encrCount, encrFirst, encrLast): New.
--
The latest GnuPG commits have the needed changes but we also allow the
use of currently released GnuPG version.
Signed-off-by: Werner Koch <wk@gnupg.org>
* src/engine-gpg.c (build_argv): Check for version 2.1.0
before adding pinentry-mode.
--
This is a compatibility fix for older versions that don't support
this flag which would otherwise result in an invalid argument
error.
* src/encrypt.c (encrypt_start): Handle SYMMETRIC flag.
* src/encrypt-sign.c (encrypt_sign_start): Ditto.
--
This causes the passphrace command handler to be properly
registered which in turn will result in the passphrase
callback beeing called.
