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Commit Graph

30 Commits

Author SHA1 Message Date
Werner Koch
7de8376430
gpg: Make trusted-key override for Tofu robust against swapped tofu.db.
* g10/tofu.c (get_trust): For the UTK check lookup the key by
fingerprint.
--

Extracting the keyid form the fingerprint is not a good idea because
that only works for v4 keys.  It is also better to first read the key
and then extract the keyid from the actual available key.

The entire trusted-key stuff should be reworked to make use of
fingerprints.

Signed-off-by: Werner Koch <wk@gnupg.org>
2015-11-13 16:09:30 +01:00
Neal H. Walfield
951f277b6b gpg: Default to the flat TOFU DB format.
* g10/tofu.c (opendbs): If the TOFU DB format is set to auto and there
is no TOFU DB, default to the flat format.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-11-10 08:03:57 +01:00
Werner Koch
44ad9f29d4
gpg: Change out of core error message.
* g10/tofu.c (fingerprint_str): Die with the error code returned by
the failed function.
(time_ago_str): Ditto.  Do not make a comma translatable.
(fingerprint_format): Use "%zu" for a size_t.
--

Also wrapped some long strings.

In general we should not use log_fatal or use xmalloc functions but
properly return an error code and use xtrymalloc like functions.

Signed-off-by: Werner Koch <wk@gnupg.org>
2015-11-03 23:20:46 +01:00
Neal H. Walfield
621afac37e gpg: Also show when the most recently signed message was observed.
* g10/tofu.c (show_statistics): Also show when the most recently
signed message was observed.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
Suggested-by: MFPA <2014-667rhzu3dc-lists-groups@riseup.net>
2015-11-03 16:33:01 +01:00
Neal H. Walfield
3632611229 gpg: Split a utility function out of a large function.
* g10/tofu.c (show_statistics): Break the time delta to string code
into...
(time_ago_str): ... this new function.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-11-03 16:33:00 +01:00
Neal H. Walfield
c8ef9f9a64 gpg: Fix message formatting.
* g10/tofu.c (get_trust): Fix message formatting.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-11-03 16:33:00 +01:00
Neal H. Walfield
8ae3946d28 gpg: Don't store formatting fingerprints in the TOFU DB.
* g10/tofu.c (fingerprint_pp): Split this function into...
(fingerprint_str): ... this function...
(fingerprint_format): ... and this function.
(record_binding): Store the unformatted fingerprint in the DB.  Only
use the formatting fingerprint when displaying a message to the user.
(get_trust): Likewise.
(show_statistics): Likewise.
(tofu_register): Likewise.
(tofu_get_validity): Likewise.
(tofu_set_policy): Likewise.
(tofu_get_policy): Likewise.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-11-03 16:32:59 +01:00
Neal H. Walfield
421827424f gpg: Change sqlite3_stepx to pass the sqlite3_stmt * to the callback.
* g10/sqlite.h (enum sqlite_arg_type): Add SQLITE_ARG_BLOB.
(sqlite3_stepx_callback): New declaration.
(sqlite3_stepx): Change the callback's type to sqlite3_stepx_callback,
which passes an additional parameter, the sqlite3_stmt *.  Update
users.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-29 10:10:39 +01:00
Neal H. Walfield
351f4213e1 gpg: Move sqlite helper functions into their own file.
* g10/tofu.c (sqlite3_exec_printf): Move from here...
* g10/sqlite.c (sqlite3_exec_printf): ... to this new file.  Don't
mark as static.
* g10/tofu.c (sqlite3_stepx): Move from here...
* g10/sqlite.c (sqlite3_stepx): ... to this new file.  Don't
mark as static.
* g10/tofu.c (enum sqlite_arg_type): Move from here...
* g10/sqlite.h (enum sqlite_arg_type): ... to this new file.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-29 10:10:38 +01:00
Neal H. Walfield
c18fb0d99b gpg: Make sure we only have a single SQL statement.
* g10/tofu.c (sqlite3_stepx): Make sure SQL only contains a single SQL
statement.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-26 13:41:59 +01:00
Neal H. Walfield
5b0ed7674d gpg: When the TOFU DB is in batch mode, periodically drop the locks.
* g10/tofu.c: Include <sched.h>.
(batch_update_started): New variable.
(begin_transaction): If we've been in batch mode for a while, then
commit any extant batch transactions.
(tofu_begin_batch_update): If we are not in batch mode, initialize
batch_update_started.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-26 13:41:59 +01:00
Neal H. Walfield
7f65e84ac0 gpg: Provide an interface to patch TOFU updates.
* g10/tofu.c (struct db): Rename begin_transaction to savepoint_batch.
Rename end_transaction to savepoint_batch_commit.  Update users.
Remove field rollback.  Add fields savepoint_inner and
savepoint_inner_commit.  Add field batch_update.
(dump_cache): New function.
(batch_update): New variable.
(begin_transaction). New function.
(end_transaction): New function.
(rollback_transaction): New function.
(tofu_begin_batch_update): New function.
(tofu_end_batch_update): New function.
(closedb): End any pending batch transaction.
(closedbs): Assert that none of the DBs have a started batch
transaction if we not in batch mode.
(record_binding): Use the begin_transaction, end_transaction and
rollback_transaction functions instead of including the SQL inline.
Also start a batch mode transaction if we are using the flat format.
(tofu_register): Use the begin_transaction, end_transaction and
rollback_transaction functions instead of including the SQL inline.
* g10/gpgv.c (tofu_begin_batch_update): New function.
(tofu_end_batch_update): New function.
* g10/test-stubs.c (tofu_begin_batch_update): New function.
(tofu_end_batch_update): New function.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-23 17:38:17 +02:00
Neal H. Walfield
297cf8660c gpg: Cache prepared SQL queries and open DB connections.
* g10/tofu.c: Include <stdarg.h>.
(prepares_saved) [DEBUG_TOFU_CACHE]: New variable.
(queries) [DEBUG_TOFU_CACHE]: New variable.
(struct db): Add fields prevp, begin_transaction, end_transaction,
rollback, record_binding_get_old_policy, record_binding_update,
record_binding_update2, get_policy_select_policy_and_conflict,
get_trust_bindings_with_this_email, get_trust_gather_other_user_ids,
get_trust_gather_other_keys, register_already_seen, and
register_insert.
[DEBUG_TOFU_CACHE]: Add field hits.
(STRINGIFY): New macro.
(STRINGIFY2): New macro.
(enum sqlite_arg_type): New enum.
(sqlite3_stepx): New function.
(combined_db): Remove variable.
(opendb): Don't cache the combined db.
(struct dbs): New struct.  Update users to use this as the head of the
local DB list rather than overloading struct db.
(unlink_db): New function.
(link_db): New function.
(db_cache): New variable.
(db_cache_count): New variable.
(DB_CACHE_ENTRIES): Define.
(getdb): If the dbs specific cache doesn't include the DB, look at
DB_CACHE.  Only if that also doesn't include the DB open the
corresponding DB.
(closedb): New function.
(opendbs): Don't open the combined DB.  Just return an initialized
struct dbs.
(closedbs): Don't close the dbs specific dbs.  Attach them to the
front of DB_CACHE.  If DB_CACHE contains more than DB_CACHE_ENTRIES,
close enough dbs from the end of the DB_CACHE list such that DB_CACHE
only contains DB_CACHE_ENTRIES.  Don't directly close the dbs, instead
use the new closedb function.
[DEBUG_TOFU_CACHE]: Print out some statistics.
(record_binding): Use sqlite3_stepx instead of sqlite3_exec or
sqlite3_exec_printf.
(get_policy): Likewise.
(get_trust): Likewise.
(tofu_register): Likewise.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-23 17:38:16 +02:00
Neal H. Walfield
cd879d4bd6 gpg: Return the DBs meta-handle rather than the sqlite3 handle.
* g10/tofu.c (getdb): Return a struct db * instead of an sqlite *.
Update users.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-23 17:38:15 +02:00
Neal H. Walfield
df57390d68 gpg: If a key is ultimate trusted, return that in the tofu model.
* g10/tofu.c (get_trust): If the policy is auto or none, check if the
key is ultimately trusted.  If so, return that.
(tofu_register): If the key is ultimately trusted, don't show any
statistics.
(tofu_get_validity): Likewise.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
Suggested-by: Andre Heinecke <aheinecke@intevation.de>
2015-10-21 13:45:48 +02:00
Neal H. Walfield
85bd7d9491 gpg: Make the tofu DB check and initialization atomic.
* g10/tofu.c (initdb): Make the version check and the database
initialization atomic.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
Co-authored-by: Andre Heinecke <aheinecke@intevation.de>
2015-10-21 13:45:45 +02:00
Neal H. Walfield
26d457c218 gpg: Don't die immediately if the TOFU DB is locked.
* g10/tofu.c (opendb): Don't die immediately if the DB is locked.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-20 15:12:23 +02:00
Neal H. Walfield
bc9ff6c85e gpg: Improve output.
* g10/tofu.c (get_trust): Also show the binding when indicating a
conflict occurred.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-20 14:53:29 +02:00
Neal H. Walfield
251c070f91 gpg: Synchronize translation template.
* g10/tofu.c (show_statistics): Synchronize translation template.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-20 14:52:39 +02:00
Neal H. Walfield
d3eca51774 gpg: When showing conflicts, also show bindings with no recorded sigs.
* g10/tofu.c (signature_stats_collect_cb): If the time_ago column is
NULL, then both time_ago and count should be 0.
(get_trust): Reverse the direction of the join so that we also get
statistics about bindings without any signatures.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-20 14:50:21 +02:00
Neal H. Walfield
445f94bc81 gpg: Improve text.
* g10/tofu.c (show_statistics): Improve text.

--
Signed-off-by: Neal H. Walfield <neal@walfield.org>
Suggested-by: Malte <malte@wk3.org>
2015-10-20 13:42:20 +02:00
Neal H. Walfield
4957e32367 gpg: Use the right variable to display the information.
* g10/tofu.c (get_trust): Use the right variable to display the
conflicting key.

--
Signed-off-by: Neal H. Walfield <neal@walfield.org>
Reported-by: Andre Heinecke <aheinecke@intevation.de>
2015-10-20 13:40:37 +02:00
Neal H. Walfield
eb8a0b051f gpg: Make failing to create a directory a soft error.
* g10/tofu.c (getdb): Don't exit if we can't create the directory.
Just return an error.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-20 13:15:19 +02:00
Neal H. Walfield
253afa2444 gpg: Fix formatting.
* g10/tofu.c (get_trust): Fix formatting.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-19 10:36:21 +02:00
Neal H. Walfield
e56a116f9a gpg: Don't forget to free some memory.
* g10/tofu.c (tofu_register): Free SIG_DIGEST before returning.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-19 10:35:38 +02:00
Neal H. Walfield
55d8845465 gpg: If a conflict occurs in batch mode, record that.
* g10/tofu.c (get_trust): If a conflict occurs when MAY_ASK is false,
set conflict to the key.  When prompting the user, don't show the
conflicting key if the conflicting key is the current key.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
2015-10-19 10:34:15 +02:00
Werner Koch
c2c4007148
gpg: Silence two more warnings.
* g10/trustdb.c (tdb_get_validity_core): Silence a warning.
* g10/tofu.c (tofu_register): Move SIG_DIGEST computation to the top
so that it is not uninitialized in case of an early error.

Signed-off-by: Werner Koch <wk@gnupg.org>
2015-10-18 20:17:24 +02:00
Werner Koch
558bcd43ae
gpg: Fix harmless compiler warnings.
* g10/tofu.h (_tofu_GET_POLICY_ERROR): New.  This avoids warnings
about undefined enum values in a switch.
* g10/trustdb.h (_tofu_GET_TRUST_ERROR): New.
* g10/tofu.c (TIME_AGO_FUTURE_IGNORE): Move to the top.
(opendbs): Avoid compiler warning (use braces).
(GET_POLICY_ERROR): Replace define by enum _tofu_GET_POLICY_ERROR.
(get_policy): Remove assert.
(GET_TRUST_ERROR): Replace by _tofu_GET_TRUST_ERROR macro.
(show_statistics): Undef MIN_SECS et al. after use.

Signed-off-by: Werner Koch <wk@gnupg.org>
2015-10-18 20:08:38 +02:00
Neal H. Walfield
128a456e77 g10: Fix assert.
* g10/tofu.c (get_trust): Fix assert.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
2015-10-18 19:08:18 +02:00
Neal H. Walfield
f77913e0ff g10: Add TOFU support.
* configure.ac: Check for sqlite3.
(SQLITE3_CFLAGS): AC_SUBST it.
(SQLITE3_LIBS): Likewise.
* g10/Makefile.am (AM_CFLAGS): Add $(SQLITE3_CFLAGS).
(gpg2_SOURCES): Add tofu.h and tofu.c.
(gpg2_LDADD): Add $(SQLITE3_LIBS).
* g10/tofu.c: New file.
* g10/tofu.h: New file.
* g10/options.h (trust_model): Define TM_TOFU and TM_TOFU_PGP.
(tofu_db_format): Define.
* g10/packet.h (PKT_signature): Add fields digest and digest_len.
* g10/gpg.c: Include "tofu.h".
(cmd_and_opt_values): Declare aTOFUPolicy, oTOFUDefaultPolicy,
oTOFUDBFormat.
(opts): Add them.
(parse_trust_model): Recognize the tofu and tofu+pgp trust models.
(parse_tofu_policy): New function.
(parse_tofu_db_format): New function.
(main): Initialize opt.tofu_default_policy and opt.tofu_db_format.
Handle aTOFUPolicy, oTOFUDefaultPolicy and oTOFUDBFormat.
* g10/mainproc.c (do_check_sig): If the signature is good, copy the
hash to SIG->DIGEST and set SIG->DIGEST_LEN appropriately.
* g10/trustdb.h (get_validity): Add arguments sig and may_ask.  Update
callers.
(tdb_get_validity_core): Add arguments sig and may_ask.  Update
callers.
* g10/trust.c (get_validity) Add arguments sig and may_ask.  Pass them
to tdb_get_validity_core.
* g10/trustdb.c: Include "tofu.h".
(trust_model_string): Handle TM_TOFU and TM_TOFU_PGP.
(tdb_get_validity_core): Add arguments sig and may_ask.  If
OPT.TRUST_MODEL is TM_TOFU or TM_TOFU_PGP, compute the TOFU trust
level.  Combine it with the computed PGP trust level, if appropriate.
* g10/keyedit.c: Include "tofu.h".
(show_key_with_all_names_colon): If the trust mode is tofu or
tofu+pgp, then show the trust policy.
* g10/keylist.c: Include "tofu.h".
(public_key_list): Also show the PGP stats if the trust model is
TM_TOFU_PGP.
(list_keyblock_colon): If the trust mode is tofu or
tofu+pgp, then show the trust policy.
* g10/pkclist.c: Include "tofu.h".
* g10/gpgv.c (get_validity): Add arguments sig and may_ask.
(enum tofu_policy): Define.
(tofu_get_policy): New stub.
(tofu_policy_str): Likewise.
* g10/test-stubs.c (get_validity): Add arguments sig and may_ask.
(enum tofu_policy): Define.
(tofu_get_policy): New stub.
(tofu_policy_str): Likewise.
* doc/DETAILS: Describe the TOFU Policy field.
* doc/gpg.texi: Document --tofu-set-policy, --trust-model=tofu,
--trust-model=tofu+pgp, --tofu-default-policy and --tofu-db-format.
* tests/openpgp/Makefile.am (TESTS): Add tofu.test.
(TEST_FILES): Add tofu-keys.asc, tofu-keys-secret.asc,
tofu-2183839A-1.txt, tofu-BC15C85A-1.txt and tofu-EE37CF96-1.txt.
(CLEANFILES): Add tofu.db.
(clean-local): Add tofu.d.
* tests/openpgp/tofu.test: New file.
* tests/openpgp/tofu-2183839A-1.txt: New file.
* tests/openpgp/tofu-BC15C85A-1.txt: New file.
* tests/openpgp/tofu-EE37CF96-1.txt: New file.
* tests/openpgp/tofu-keys.asc: New file.
* tests/openpgp/tofu-keys-secret.asc: New file.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
2015-10-18 18:45:40 +02:00