* g10/tofu.c: Include <time.h>, <utime.h>, <fcntl.h> and <unistd.h>.
(tofu_dbs_s): Add fields want_lock_file and want_lock_file_ctime.
(begin_transaction): Only yield if DBS->WANT_LOCK_FILE_CTIME has
changed since we took the lock. Don't use gpgrt_yield to yield, but
sleep for 100ms. After taking the batch lock, update
DBS->WANT_LOCK_FILE_CTIME. Also take the batch lock the first time we
take the real lock. When taking the real lock, use immediate not
deferred mode to avoid gratuitious aborts.
(end_transaction): When dropping the outermost real lock, drop the
batch lock.
(busy_handler): New function.
(opendbs): Set the busy handler to it when opening the DB. Initialize
CTRL->TOFU.DBS->WANT_LOCK_FILE.
(tofu_closedbs): Free DBS->WANT_LOCK_FILE.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
By default, SQLite defers transactions until they are actually needed.
A consequence of this is that if we have two readers and both decide
to do a write, then one has to abort. To avoid this problem, we can
make the outermost transaction an immediate transaction. This has the
disadvantage that we only allow a single reader at a time, but at
least we don't have gratuitous aborts anymore.
A second problem is that SQLite apparently doesn't actually create a
queue of waiters. The result is that doing a sched_yield between
dropping and retaking the batch transaction is not enough to allow the
other process to make progress. Instead, we need to wait a
while (emperically: 100ms seems reasonable). To avoid waiting when
there is no contention, we use a new file's timestamp to signal that
there is a waiter.
* g10/tofu.c (build_conflict_set): If CONFLICT_SET contains a single
element, don't bother to check for cross sigs. Add parameter PK.
Update callers.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (signed_by_utk): When checking if a key is signed by an
ultimately trusted key, only consider the signatures on the specified
user id.
* tests/openpgp/tofu.scm: Add test for the above.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (cross_sigs): When checking cross signatures, only
consider the signatures on the specified user id.
* tests/openpgp/tofu.scm: Add test for the above.
* tests/openpgp/tofu/cross-sigs/
1938C3A0E4674B6C217AC0B987DB2814EC38277E-1.gpg:
New file.
* tests/openpgp/tofu/cross-sigs/
1938C3A0E4674B6C217AC0B987DB2814EC38277E-1.txt: New file.
* tests/openpgp/tofu/cross-sigs/
1938C3A0E4674B6C217AC0B987DB2814EC38277E-2.gpg: New file.
* tests/openpgp/tofu/cross-sigs/
1938C3A0E4674B6C217AC0B987DB2814EC38277E-2.txt: New file.
* tests/openpgp/tofu/cross-sigs/
1938C3A0E4674B6C217AC0B987DB2814EC38277E-3.txt: New file.
* tests/openpgp/tofu/cross-sigs/
1938C3A0E4674B6C217AC0B987DB2814EC38277E-secret.gpg: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-1.gpg: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-1.txt: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-2.gpg: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-2.txt: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-3.gpg: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-3.txt: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-4.gpg: New file.
* tests/openpgp/tofu/cross-sigs/
DC463A16E42F03240D76E8BA8B48C6BD871C2247-secret.gpg: New file.
* tests/openpgp/tofu/cross-sigs/README: New file.
--
Signed-off-by: Neal H. Walfield
* g10/tofu.c (get_trust): If POLICY is ask, but we can't ask, don't
bail immediately. Instead, check if the key in question is an
ultimately trusted key or cross signed.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (record_binding): Take an additional argument, CONFLICT.
Set the binding's conflict accordingly. Update callers.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (build_conflict_set): A binding has a conflict is
conflict is *not* NULL, not if it is NULL.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (initdb): Change policy from a boolean to an integer.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
Reported-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
Note: sqlite ignores type information so this change has no real
impact.
--
This reverts commit b0d2526bc4.
The number of format elements may not change in ngettext. The entire
construct is anyway wrong because ngettext is passed a different value
than what is used in the printf.
We need to rework the use of most strings in tofu.c.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/tofu.c (tofu_set_policy): If record_binding fails, fail. If the
function fails, rollback the transaction.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (get_trust): Use the pk_main_keyid accessor function.
(tofu_register_signature): Likewise.
(tofu_register_encryption): Likewise.
(tofu_set_policy): Likewise and also use pk_keyid and keyid_cmp.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (signed_by_utk): New function.
(get_trust): If a key is signed by an ultimately trusted key, then
set any bindings to good.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (ask_about_binding): Use the time that a signature was
seen, not allegedly generated, when generating statistics.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (build_conflict_set): Check for the current key after
looking for conflicts and removing any '!'.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
Fixes-commit: 1f1f56e6
* g10/tofu.c (record_binding): New parameter now. Update callers.
Don't use SQLite's strftime('%s','now') to get the current time, use
NOW.
(ask_about_binding): Likewise.
(get_trust): New parameter now. Update callers.
(show_statistics): Likewise.
(tofu_register_signature): Don't use SQLite's strftime('%s','now') to
get the current time, use gnupg_get_time().
(tofu_register_encryption): Likewise.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (write_stats_status): Use ulong for MESSSAGES. Fix
format strings. Simplify by using the new write_status_printf.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/tofu.c (get_trust): Make sure the caller provides a primary key.
(tofu_register_signature): Likewise.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (time_ago_str): Only show the most significant unit.
* g10/tofu.c (show_statistics): Tweak the output.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (show_statistics): Return whether to call show_warning.
Move the warning from here...
(show_warning): ... to this new function.
(tofu_get_validity): If show_statistics returns a non-zero value, call
show_warning.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c: Include "sqrtu32.h".
(struct tofu_dbs_s.s): Rename get_trust_gather_other_keys to
get_trust_gather_signature_stats. Add new field
get_trust_gather_encryption_stats.
(initdb): Create the encryptions table.
(ask_about_binding): Show the encryption statistics too.
(tofu_register): Rename from this...
(tofu_register_signature): ... to this and update callers.
(tofu_register_encryption): New function.
(write_stats_status): Add parameters encryption_count,
encryption_first_done and encryption_most_recent. Update callers.
Compute the trust using the euclidean distance of the signature and
signature count. Compare with twice the threshold. Include
encryption count information in the TFS and TOFU_STATS lines.
(show_statistics): Also get information about the encrypted messages.
* g10/trustdb.c (tdb_get_validity_core): Use it.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (BINDING_NEW): New enum value.
(BINDING_CONFLICT): Likewise.
(BINDING_EXPIRED): Likewise.
(BINDING_REVOKED): Likewise.
(ask_about_binding): Move cross sig check from here...
(get_trust): ... and the conflict set building from here...
(build_conflict_set): ... to this new function.
(format_conflict_msg_part1): Replace parameter conflict with
conflict_set. Drop parameter fingerprint. Update callers.
(ask_about_binding): Drop unused parameter conflict and redundant
parameter bindings_with_this_email_count. Rename parameter
bindings_with_this_email to conflict_set. Update callers.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (cross_sigs): New function.
(ask_about_binding): If apparently conflicting keys are cross signed,
then don't mark them as conflicting.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
If two keys are cross signed, then the same person (probably)
controlled them both. In this case, don't raise a TOFU conflict.
This usually occurs when someone transitions to a new key. When that
person rotates to a third key, she will typically only cross sign it
with the second key. As such, we check this transitively to avoid
declaring a conflict between the 1st and 3rd key.
* g10/tofu.c (begin_transaction): New parameter only_batch. If set,
only start a batch transaction if there is none and one has been
requested. Update callers.
(tofu_suspend_batch_transaction): New function.
(tofu_resume_batch_transaction): Likewise.
(ask_about_binding): Take a ctrl_t, not a tofu_dbs_t. Update
callers. Gather statistics within a transaction. Suspend any batch
transaction when getting user input.
(get_trust): Take a ctrl_t, not a tofu_dbs_t. Update callers.
Enclose in a transaction.
(tofu_get_validity): Use a batch transaction, not a normal
transaction.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c (struct signature_stats): Add fields is_expired and
is_revoked.
(signature_stats_prepend): Clear *stats when allocating it.
(ask_about_binding): Also show whether the user ids are expired or
revoked.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
* g10/tofu.c: first_seen == 0 is not an error.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
Fixes-commit: 0f1f02ac
Regression-due-to: 45bb9a2a
* g10/tofu.c (tofu_set_policy): Do the update in a transaction.
* g10/gpg.c (main): Do a TOFU policy update in a batch transaction.
--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
