* dirmngr/http.c (http_session_new) <gnutls>: Use only the special
pool certificate for the default keyserver.
--
The gnutls version uses a different strategy than the ntbtls version
on when to use the special SKS pool certificate. This patch aligns it
so that we don't need to wonder about different kind of bug reports.
In short the special cert is now the only cert use with the default
keyserver.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http.h (HTTP_FLAG_TRUST_CFG): New flag.
* dirmngr/http.c (http_register_cfg_ca): New.
(http_session_new) [HTTP_USE_GNUTLS]: Implement new trust flag.
* dirmngr/certcache.c (load_certs_from_dir): Call new function.
(cert_cache_deinit): Ditto.
* dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Ditto.
* dirmngr/ks-engine-http.c (ks_http_fetch): Add new args
'send_no_cache' and 'extra_http_trust_flags'. Change all callers to
provide the default value.
* dirmngr/crlfetch.c (crl_fetch): Rewrite to make use of
ks_http_fetch.
--
The old code simply did not use https for downloading of CRLS.
Instead it rewrote https to http under the assumption that the CRL
service was also available without encryption. Note that a CRL is
self-standing and thus it does not need to have extra authenticity as
provided by TLS. These days we should not use any unencrypted content
and thus this patch.
Be aware that cacert.org give a https CRL DP but that currently
redirects to to http! This is a downgrade attack which we detect and
don't allow. The outcome is that it is right now not possible to use
CAcert certificates.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/certcache.c (any_cert_of_class): New var.
(put_cert): Set it.
(cert_cache_deinit): Clear it.
(cert_cache_any_in_class): New func.
* dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Add hack to
override empty list of HKP certs.
--
This patch carries the changes for GNUTLS from commit
7c1613d41566f7d8db116790087de323621205fe over to NTBTLS. NTBTLS works
quite different and thus we need to do it this way.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/validate.h (VALIDATE_FLAG_SYSTRUST): Remove
(VALIDATE_FLAG_EXTRATRUST): Remove
(VALIDATE_FLAG_TRUST_SYSTEM): New.
(VALIDATE_FLAG_TRUST_CONFIG): New.
(VALIDATE_FLAG_TRUST_HKP): New.
(VALIDATE_FLAG_TRUST_HKPSPOOL): New.
(VALIDATE_FLAG_MASK_TRUST): New.
* dirmngr/validate.c (check_header_constants): New.
(validate_cert_chain): Call new function. Simplify call to
is_trusted_cert.
* dirmngr/crlcache.c (crl_parse_insert): Pass
VALIDATE_FLAG_TRUST_CONFIG to validate_cert_chain
* dirmngr/server.c (cmd_validate): Use VALDIATE_FLAG_TRUST_SYSTEM and
VALIDATE_FLAG_TRUST_CONFIG.
* dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Check provided TLS
context. Set trustclass flags using the new VALIDATE_FLAG_TRUST
values.
* dirmngr/certcache.c (cert_cache_init): Load the standard pool
certificate prior to the --hkp-cacerts.
--
Note that this changes the way the standard cert is used: We require
that it is installed at /usr/share/gnupg and we do not allow to change
it. If this is not desired, the the standard cert can be removed or
replaced by a newer one.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dirmngr.h (server_control_s): New flag 'http_no_crl'.
* dirmngr/dirmngr.c (dirmngr_init_default_ctrl): Set this flag.
* dirmngr/server.c (option_handler): New option "http-crl"
* dirmngr/http.h (HTTP_FLAG_NO_CRL): New flag.
* dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Consult this flag.
* dirmngr/ks-engine-hkp.c (send_request): Set flag depending on CTRL.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (main): New option --no-crl.
--
This new option can be used to enable CRL checks on a per session
base. The default is not to use CRLs for https connections.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http-ntbtls.c: New.
* dirmngr/Makefile.am (dirmngr_SOURCES): Add file.
* dirmngr/dirmngr.h (SERVER_CONTROL_MAGIC): New.
(server_conrol_s): Add field 'magic',
* dirmngr/dirmngr.c (dirmngr_init_default_ctrl): Set MAGIC.
(dirmngr_deinit_default_ctrl): Set MAGIC to deadbeef.
* dirmngr/http.c (my_ntbtls_verify_cb): New.
(http_session_new) [HTTP_USE_NTBTLS]: Remove all CA setting code.
(send_request) [HTTP_USE_NTBTLS]: Set the verify callback. Do not call
the verify callback after the handshake.
* dirmngr/ks-engine-hkp.c (send_request): Pass
gnupg_http_tls_verify_cb to http_session_new.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (my_http_tls_verify_cb): New.
(main): Rename option --gnutls-debug to --tls-debug.
(main) [HTTP_USE_NTBTLS]: Create a session.
Signed-off-by: Werner Koch <wk@gnupg.org>
