* agent/call-scd.c (start_scd): Acquire START_SCD_LOCK for
SCD_LOCAL_LIST. Move common case code to fast path.
Release START_SCD_LOCK before calling unlock_scd.
When new CTX is allocated, clear INVALID flag.
(agent_reset_scd): Serialize the access to SCD_LOCAL_LIST by
START_SCD_LOCK.
--
GnuPG-bug-id: 4377
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* scd/app-piv.c (concat_tlv_list): Add arg 'secure' and adjust
callers.
(writekey_rsa, writekey_ecc): New.
(do_writekey): New.
(do_writecert): Provide a better error message for an empty cert.
(app_select_piv): Register do_writekey.
* scd/iso7816.c (iso7816_send_apdu): New.
* scd/app-common.h (APP_WRITEKEY_FLAG_FORCE): New.
* agent/command.c (cmd_keytocard): Make the timestamp optional.
* tools/card-call-scd.c (inq_writekey_parms): Remove.
(scd_writekey): Rewrite.
* tools/gpg-card.c (cmd_writekey): New.
(enum cmdids): Add cmdWRITEKEY.
(dispatch_command, interactive_loop): Call cmd_writekey.
--
This has been tested with gpgsm and RSA keys. For ECC keys only
partly tested using the sample OpenPGP nistp256 and nistp384 keys
because gpgsm does not yet support ECC certificates and thus we can't
write the certificates to the cert object after a writekey. Note that
they nevertheless show up in "gpgcard list" because gpg-card searches
for them in gpg and gpgsm. However, this does not work completely.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command.c (cmd_keytocard): Make timestamp optional. Use
modern parser function.
* agent/call-scd.c (agent_card_writekey): Rename an arg and for
clarity return gpg_error_t instead of int.
* agent/divert-scd.c (divert_writekey): Ditto.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/pksign.c (agent_pksign_do):
--
It's best to keep same data format by libgcrypt.
For card (due to historical reasons), gpg-agent or scdaemon used to
prefix 0x00 when it starts 0x80, so that it can be parsed signed MPI
as well as unsigned MPI. It used to do nothing for preceding zeros.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/divert-scd.c (divert_pkdecrypt): Skip a flags parameter.
--
The libgcrypt docs say that a "flags" parameter should always be used
in the input of pkdecrypt. Thus we should allow that parameter also
when parsing an s-expression to figure out the algorithm for use with
scdaemon.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/call-pinentry.c (watch_sock): New.
(do_getpin): Spawn the watching thread.
--
While we don't have npth_cancel (and it's difficult to implement it
correctly), this is a kind of best compromise allowing a thread's
polling when pinentry is active.
GnuPG-bug-id: 2011
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/agent.h (PINENTRY_STATUS_*): Expose to public.
(struct pin_entry_info_s): Add status.
* agent/call-pinentry.c (agent_askpin): Clearing the ->status
before the loop, let the assuan_transact set ->status. When
failure with PINENTRY_STATUS_PASSWORD_FROM_CACHE, it returns
soon.
* agent/findkey.c (unprotect): Clear the pinentry cache,
when it causes an error.
--
GnuPG-bug-id: 4348
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/passphrase.c (encode_s2k_iterations): Move function to ...
* common/openpgp-s2k.c: new file. Remove default intialization code.
* common/openpgpdefs.h (S2K_DECODE_COUNT): New to keep only one copy.
* g10/call-agent.c (agent_get_s2k_count): Change to return the count
and print an error.
* agent/protect.c: Include openpgpdefs.h
* g10/card-util.c (gen_kdf_data): Adjust for changes
* g10/gpgcompose.c: Include call-agent.h.
(sk_esk): Adjust for changes.
* g10/passphrase (passphrase_to_dek): Adjust for changes.
* g10/main.h (S2K_DECODE_COUNT): Remove macro.
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/percent.c (percent_data_escape): Add new args prefix and
plus_escape.
* agent/command.c (cmd_put_secret): Adjust for changed function
* common/t-percent.c (test_percent_data_escape): Extend test for the
prefix.
(test_percent_data_escape_plus): new test for the plus escaping.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command-ssh.c (struct ssh_key_type_spec): Add field
alt_curve_name.
(ssh_key_types): Add some alternate curve names.
(ssh_identifier_from_curve_name): Lookup also bey alternative names
and return the canonical name.
(ssh_key_to_blob): Simplify the ECDSA case by using gcry_pk_get_curve
instead of the explicit mapping.
(ssh_receive_key): Likewise. Use ssh_identifier_from_curve_name to
validate the curve name. Remove the reverse mapping because since
GnuPG-2.2 Libgcrypt 1.7 is required.
(ssh_handler_request_identities): Log an error message.
--
This change will make it easier to support other curves, in particular
those from tokens. Libgcrypt has a large list of alias names which we
now use to to make the mapping more flexible.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/protect.c (s2k_calibration_time): New file global var.
(calibrate_s2k_count): Use it here.
(get_calibrated_s2k_count): Replace function static var by ...
(s2k_calibrated_count): new file global var.
(set_s2k_calibration_time): New function.
* agent/gpg-agent.c (oS2KCalibration): New const.
(opts): New option --s2k-calibration.
(parse_rereadable_options): Parse that option.
--
Note that using an unrelistic high value (like 60000) takes quite some
time for calibration.
GnuPG-bug-id: 3399
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/call-scd.c (unlock_scd): Move lock before accessing IN_USE.
(wait_child_thread): Add log_info for Windows, and fixed log_error
message.
--
The old code is still valid with cooperate threads, but this is
better.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/call-pinentry.c (agent_popup_message_stop): Just kill it.
--
By checking if it's alive or not, we can lower a risk of sending
SIGINT to a wrong process on unusual condition when PID is re-used to
a different process.
That's true, however, since it's alive usually, simply sending SIGINT
is enough here.
Note that here is a race condition for detecting if process is active
or not; A process can die just after being detected alive.
Moreover, when the process of pinentry accidentally died already, it
should have caused return of assuan_transact and the thread of
popup_message_thread likely already set popup_finished=1.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/command-ssh.c (get_client_info): Turn client_uid into an int.
Fix setting of it in case of a failed getsocketopt.
* agent/command.c (start_command_handler): Fix setting of the pid and
uid for Windows.
--
Fixes-commit: 28aa689058
which obviously was only added to master.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/divert-scd.c (getpin_cb): Support --ack option.
--
We are now introducing "acknowledge button" feature to scdaemon,
so that we can support OpenPGPcard User Interaction Flag.
We will (re)use the mechanism of POPUPPINPADPROMPT for this. Perhaps,
we will change the name of POPUPPINPADPROMPT, since it will be no
longer for PINPAD only.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/call-pinentry.c (initialize_module_call_pinentry): It's an
error when npth_mutex_init returns non-zero.
--
Actually, initialize_module_call_pinentry is only called once from
main. So, this bug had no harm and having the static variable
INITIALIZED is not needed.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* agent/agent.h (CACHE_MODE_DATA): New const.
* agent/cache.c (DEF_CACHE_TTL_DATA): new.
(housekeeping): Tweak for CACHE_MODE_DATA.
(cache_mode_equal): Ditto.
(agent_get_cache): Ditto.
(agent_put_cache): Implement CACHE_MODE_DATA.
* agent/command.c (MAXLEN_PUT_SECRET): New.
(parse_ttl): New.
(cmd_get_secret): New.
(cmd_put_secret): New.
(register_commands): Register new commands.
--
These commands allow to store secrets in memory for the lifetime of
the gpg-agent process.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command.c (start_command_handler): Do not write to
CLIENT_CREDS after an error.
--
assuan_get_peercred is special insofar that it returns a pointer into
CTX. Writing data via this pointer should never be done.
Fixes-commit: 28aa689058
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/gpg-agent.c (agent_copy_startup_env): Replace explicit list
with the standard list.
--
Although the function agent_copy_startup_env is newer than
session_env_list_stdenvnames the latter was not used. When
DBUS_SESSION_BUS_ADDRESS was added to the latter it was forgotten to
add it to the former as well. Having all stdnames here seems to be
the Right Thing (tm) to do.
GnuPG-bug-id: 3947
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command.c (cmd_getinfo): Add sub-command getenv.
* dirmngr/server.c (cmd_getinfo): Ditto.
--
It is sometimes helpful to be able to inspect certain envvars in a
running agent. For example "http_proxy".
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/command-ssh.c (ssh_handler_sign_request): if a flag is passed
during an signature request that we do not know how to apply, return
GPG_ERR_UNKNOWN_OPTION.
--
https://tools.ietf.org/html/draft-miller-ssh-agent-02#section-4.5 says:
If the agent does not support the requested flags, or is otherwise
unable or unwilling to generate the signature (e.g. because it
doesn't have the specified key, or the user refused confirmation of a
constrained key), it must reply with a SSH_AGENT_FAILURE message.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
GnuPG-bug-id: 3880
* agent/command-ssh.c: repoint documentation reference.
--
Damien Miller is now documenting the ssh-agent protocol via the IETF.
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
* agent/cache.c (agent_put_cache): Add arg 'ctrl' and change all
callers to pass it.
(agent_get_cache): Ditto.
* agent/cache.c (struct cache_items_s): Add field 'restricted'.
(housekeeping): Adjust debug output.
(agent_flush_cache): Ditto.
(agent_put_cache): Ditto. Take RESTRICTED into account.
(agent_get_cache): Ditto.
--
If requests are coming from different sources they should not share the
same cache. This way we make sure that a Pinentry pops up for a
remote request to a key we have already used locally.
GnuPG-bug-id: 3858
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/shareddefs.h (request_origin_t): New.
* common/agent-opt.c (parse_request_origin): New.
(str_request_origin): New.
* agent/command.c (option_handler): Implement new option.
--
This allows to pretend that a request originated from the extra or
browser socket.
Signed-off-by: Werner Koch <wk@gnupg.org>
* agent/cache.c (agent_cache_housekeeping): New func.
* agent/gpg-agent.c (handle_tick): Call it.
--
This change mitigates the risk of having cached items in a post mortem
dump.
GnuPG-bug-id: 3829
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/asshelp2.c (vprint_assuan_status_strings): New.
(print_assuan_status_strings): New.
* agent/command.c (agent_write_status): Replace by call to new
function.
* dirmngr/server.c (dirmngr_status): Ditto.
* g13/server.c (g13_status): Ditto.
* g13/sh-cmd.c (g13_status): Ditto.
* sm/server.c (gpgsm_status2): Ditto.
* scd/command.c (send_status_info): Bump up N.
--
This fixes a potential overflow if LFs are passed to the status
string functions. This is actually not the case and would be wrong
because neither the truncating in libassuan or our escaping is not the
Right Thing. In any case the functions need to be more robust and
comply to the promised interface. Thus the code has been factored out
to a helper function and N has been bumped up correctly and checked in
all cases.
For some uses this changes the behaviour in the error case (i.e. CR or
LF passed): It will now always be C-escaped and not passed to
libassuan which would truncate the line at the first LF.
Reported-by: private_pers
* agent/command-ssh.c (get_client_info): Use LOCAL_PEERCRED.
--
LOCAL_PEERUID was wrong (while there is LOCAL_PEERUUID).
For FreeBSD and macOS, we can use LOCAL_PEERCRED to get uid.
GnuPG-bug-id: 3757
Fixes-commit: 28aa689058
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
