* dirmngr/ks-engine-hkp.c (ks_hkp_search): Send SOURCE status also on
NO DATA error.
(ks_hkp_get): Ditto.
* g10/call-dirmngr.c (gpg_dirmngr_ks_search): Print "data source" info
also on error.
(gpg_dirmngr_ks_get): Ditto.
--
If a keyserver does not return any data it can be useful to know which
keyserver out of the pool answered.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (select_random_host): Use atomic pass
through the host table instead of risking out-of-bounds write.
--
Multiple threads may write to hosttable[x]->dead while
select_random_host() is running. For example, a housekeeping thread
might clear the ->dead bit on some entries, or another connection to
dirmngr might manually mark a host as alive.
If one or more hosts are resurrected between the two loops over a
given table in select_random_host(), then the allocation of tbl might
not be large enough, resulting in a write past the end of tbl on the
second loop.
This change collapses the two loops into a single loop to avoid this
discrepancy: each host's "dead" bit is now only checked once.
As Werner points out, this isn't currently strictly necessary, since
npth will not switch threads unless a blocking system call is made,
and no blocking system call is made in these two loops.
However, in a subsequent change in this series, we will call a
function in this loop, and that function may sometimes write(2), or
call other functions, which may themselves block. Keeping this as a
single-pass loop avoids the need to keep track of what might block and
what might not.
GnuPG-bug-id: 2836
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
* g10/import.c (read_block): Call free_packet to skip the packet.
--
Reported-by: Philippe Antoine
GnuPG-bug-id: 3916
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* tests/gpgscm/scheme.c (CASE): Use unused attribute for GCC > 6.
(FALLTHROUGH): New for fallthrough.
(Eval_Cycle): Use FALLTHROUGH. Remove not-needed comment of
fallthrough.
--
Since GCC combines C preprocessor macro expansion, the fallthrough
comment doesn't work well to suppress warnings for
-Wimplicit-fallthrough, near the macro CASE. To handle this
problem, we use GCC's extension of unused label and fallthrough
attributes.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/gpg.c (oKnownNotation): New const.
(opts): Add option --known-notation.
(main): Set option.
* g10/parse-packet.c (known_notations_list): New local var.
(register_known_notation): New.
(can_handle_critical_notation): Rewrite to handle the new feature.
Also print the name of unknown notations in verbose mode.
--
GnuPG-bug-id: 4060
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/getkey.c (getkey_ctx_s): New field found_via_akl.
(get_pubkey_byname): Set it.
(only_expired_enc_subkeys): New.
(get_best_pubkey_byname): Add support to refresh expired keys from the
WKD.
--
A little drawback of that code is that if the WKD has no update for an
expired key each access of the key will trigger a WKD lookup (unless
cached by the dirmngr). To avoid this we need to record the last time
we have checked for an update but that would in turn require that we
update the keyring for each check. We defer this until we have a
better key database which allows for fast updates of meta data.
Testing the code is currently a bit cumbersome because it requires to
update a key in the WKD several times. Eventually we we need a
network emulation layer to provide sample data for the regression
tests.
GnuPG-bug-id: 2917
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/call-agent.h (agent_card_info_s): Rename the "*valid" fields to
"*len".
* g10/call-agent.c (unhexify_fpr): Change to take a FPRLEN and to
return the actual length.
(agent_release_card_info): Adjust for these changes.
* g10/card-util.c (print_sha1_fpr): Rename to print_shax_fpr and add
arg FPRLEN. Change all callers to pass the length.
(print_sha1_fpr_colon): Rename to print_shax_fpr_colon and add arg
FPRLEN. Change all callers to pass the length.
(fpr_is_zero): Add arg FPRLEN.
(fpr_is_ff): Ditto.
(show_card_key_info): Use the new functions.
* g10/skclist.c (enum_secret_keys): Use MAX_FINGERPRINT_LEN.
--
This is not needed right now but we should get rid of all hard coded
fingerprint lengths. Thus this change.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/skclist.c (enum_secret_keys): Since "KEY-FPR" returns
fingerprint in binary, change it to hex string.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/getkey.c (enum_secret_keys): Move to...
* g10/skclist.c (enum_secret_keys): ... here.
--
The function enum_secret_keys is not used by gpgv.c, but it is in
getkey.c. Extending enum_secret_keys will require change of gpgv.c,
so moving the function to the file for gpg is better.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/getkey.c (enum_secret_keys): Fix comment for usage of
enum_secret_keys, following the previous change.
--
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/getkey.c (enum_secret_keys): Collecting keys in the context,
check duplicate to make sure returning only unique keys.
* g10/pubkey-enc.c (get_session_key): Now, it's the responsibility of
enum_secret_keys to free keys.
--
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/mainproc.c (struct mainproc_context): It's now pubkey_enc_list.
(do_proc_packets): Remove the first arg CTRL. Fix call of
proc_pubkey_enc.
(release_list): Handle pubkey_enc_list.
(proc_pubkey_enc): Remove the first arg CTRL. Simply put the packet
to pubkey_enc_list.
(print_pkenc_list): Remove the last arg FAILED.
(proc_encrypted): Only call print_pkenc_list once.
Handle DEK here.
(proc_packets, proc_signature_packets, proc_signature_packets_by_fd)
(proc_encryption_packets): Fix call of do_proc_packets.
* g10/packet.h (struct pubkey_enc_list): Define.
* g10/pubkey-enc.c (get_it): Change the second argument K.
(get_session_key): Select session key by LIST, using enum_secret_keys.
* g10/gpgv.c (get_session_key): Change the second argument K.
* g10/test-stubs.c (get_session_key): Likewise.
--
Collect all PKT_PUBKEY_ENC packets, and then, process the
PKT_ENCRYPTED* packet.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/parse-packet.c (parse_symkeyenc): Use iobuf_get_noeof.
(parse_key): Likewise.
--
When EOF comes at parsing s2k.count, it is possible the value will
be (unsigned long)-1. Then, the result of S2K_DECODE_COUNT will be
undefined. This patch fixes undefined behavior.
Reported-by: Philippe Antoine
GnuPG-bug-id: 4093
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/call-dirmngr.c (MAX_WKD_RESULT_LENGTH): New.
(gpg_dirmngr_wkd_get): Use it.
--
WKD should return only a single key with just one UID. For key
rollover 2 keys may be send. A total of 256 KiB seems to be a
generous limit here.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/server.c (proc_wkd_get): Check the returned SRV record names
to mitigate rogue DNS servers.
--
I am not sure wether this really is very useful because the security
relies on a trustworthy DNS system anyway. However, that check is
easy enough to do.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dirmngr-status.h: New.
* dirmngr/dirmngr.h: Include dirmngr-status.h and move some prototypes
to that file.
* dirmngr/t-support.c: New.
* dirmngr/Makefile.am (dirmngr_SOURCES): Add dirmngr-status.h.
(t_common_src): Add t-support.c.
* dirmngr/server.c (dirmngr_status_printf): Bypass if CTRL is NULL.
* dirmngr/dns-stuff.c: Include dirmngr-status.h.
(libdns_init): Print WARNING status line. Change call callers to take
and pass a CTRL argument.
* g10/call-dirmngr.c (ks_status_cb): Print info for new WARNING
status.
--
To test this you can change RESOLV_CONF_NAME in dns-stuff.c and run
gpg --recv-key -v SOMETHING.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/key-clean.c (clean_key): Rename to clean_all_uids and split
subkey cleaning into ...
(clean_all_subkeys): new. Call that always after the former clean_key
invocations.
--
Note that the clean_all_subkeys function will later be extended.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/getkey.c (get_pubkey_for_sig): New.
(get_pubkeyblock_for_sig): New.
* g10/mainproc.c (issuer_fpr_raw): Give global scope.
(check_sig_and_print): Use get_pubkeyblock_for_sig.
* g10/pkclist.c (check_signatures_trust): Use get_pubkey_for_sig.
* g10/sig-check.c (check_signature2): Ditto.
(check_signature_over_key_or_uid): Ditto.
--
GnuPG-bug-id: 4046
The whole getkey stuff is still a mess with way to much duplication
and missing caching of already fetched data.
Signed-off-by: Werner Koch <wk@gnupg.org>
* configure.ac (GNUPG_CACHE_DIR): New const.
* tools/Makefile.am (libexec_PROGRAMS): Add gpg-pair-tool.
(gpg_pair_tool_SOURCES, gpg_pair_tool_CFLAGS)
(gpg_pair_tool_LDADD): New.
* tools/gpg-pair-tool.c: New.
--
This is a first try on a protocol to pair two devices so that they can
agree on a shared secret to exchange secret keys. The idea is that if
you want to sync your secret keys to another machine (e.g. from
desktop to mobile) you have physical access to both devices and thus a
pairing protocol allows to authenitcate the connection using a short
string. See the source for a protocol description.
How to test:
$ gpg-pair-tool -va --homedir . --initiate >msg.commit
$ gpg-pair-tool -va --homedir 2ndhome --respond \
<msg.commit >msg.dhpart1
$ gpg-pair-tool -va --homedir . --respond \
<msg.dhpart1 >msg.dhpart2
$ gpg-pair-tool -va --homedir 2ndhome --respond \
<msg.dhpart2 >msg.confirm
Now set the SAS as printed by the responder into SAS and run
$ gpg-pair-tool -va --homedir . --respond --sas $SAS <msg.confirm
Storing the secret on disk is obviously not the right thing to do.
With the new PUT_SECRET and GET_SECRET commands of gpg-agent we can
change this to store it all in gpg-agent instead. This will make it
also easier for gpg to access the secret and we won't need an option
to return it from gpg-pair-tool. Thus gpg-pair-tool can be dedicated
to run the protocol and maybe to popup info dialogs.
Adding a second expiration time for running the protocol in addition
to the expiration of the secret is probably a better idea than just
that simple catch-all TTL.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/import.c (read_block): Add special treatment for bad user ids
and comment packets.
--
See
GnuPG-bug-id: 4022
for an example of a bogus user id.
Signed-off-by: Werner Koch <wk@gnupg.org>
* g10/sig-check.c (check_signature_end_simple): Check sign usage.
--
Without this patch the signature verification fails only due to the
missing back signature. This check better explains what went wrong.
GnuPG-bug-id: 4014
Signed-off-by: Werner Koch <wk@gnupg.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: 28aa6890588cc108639951bb4bef03ac17743046
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dns.c (dns_res_exec): If it's DNS_SO_SOCKS_CONN, don't
iterate to other server, but return the error immediately.
--
In the function libdns_switch_port_p in dns-stuff.c, this patch
allows to fallback using TOR_PORT2 correctly.
Fixes-commit: bcdbf8b8ebe9d61160e0b007dabe1b6462ffbc93
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* g10/import.c (get_revocation_reason): New.
(list_standalone_revocation): Extend function.
--
Note that this function extends the "rvs" field signature-class (field
11) with the revocation reason. GPGME does not yet parse this but it
can be expected that the comma delimiter does not break other parsers.
A new field is added to the "rvs" (and in future also the "rev")
record to carry a record specific comment. Hopefully all parsers
meanwhile learned the lesson from other new fields and don't bail out
on more fields than they know about.
This is partial solution to
GnuPG-bug-id: 1173
Signed-off-by: Werner Koch <wk@gnupg.org>
* configure.ac (AC_CHECK_FUNCS): Fold most calls into one.
--
A few functions were tested two times which slightly increases the size
of the configure script. Also put the functions in sorted order into
the macro.
Signed-off-by: Werner Koch <wk@gnupg.org>
