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Commit Graph

25 Commits

Author SHA1 Message Date
Damien Goutte-Gattat
1ba308aa03
dirmngr: Do not follow https-to-http redirects.
* dirmngr/ks-engine-http.c (ks_http_fetch): Forbid redirects from
a https URI to a http URI.
--

GnuPG-bug-id: 3436
Signed-off-by: Damien Goutte-Gattat <dgouttegattat@incenp.org>
2017-10-19 15:32:38 +02:00
Justus Winter
e7fc6e3bf0
dirmngr: Forbid redirects from .onion to clearnet URIs.
* dirmngr/ks-engine-hkp.c (send_request): Forbid redirects from .onion
to clearnet URIs.
* dirmngr/ks-engine-http.c (ks_http_fetch): Likewise.
--
This protects users from misconfigured .onion services.

GnuPG-bug-id: 3087
Signed-off-by: Justus Winter <justus@g10code.com>
2017-07-19 17:02:25 +02:00
Werner Koch
9b43220b8a
dirmngr: Implement HTTP connect timeouts of 15 or 2 seconds.
* dirmngr/dirmngr.c (oConnectTimeout, oConnectQuickTimeout): New
enums.
(opts): New options --connect-timeout and --connect-quick-timeout.
(DEFAULT_CONNECT_TIMEOUT): New.
(DEFAULT_CONNECT_QUICK_TIMEOUT): New.
(parse_rereadable_options): Handle new options.
(post_option_parsing): New.  Use instead of direct calls to
set_debug() and set_tor_mode ().
(main): Setup default timeouts.
(dirmngr_init_default_ctrl): Set standard connect timeout.
* dirmngr/dirmngr.h (opt): New fields connect_timeout and
connect_quick_timeout.
(server_control_s): New field timeout.
* dirmngr/ks-engine-finger.c (ks_finger_fetch): Pass timeout to
http_raw_connect.
* dirmngr/ks-engine-hkp.c (send_request): Call
http_session_set_timeout.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/server.c (cmd_wkd_get, cmd_ks_search, cmd_ks_get)
(cmd_ks_fetch): Implement --quick option.
--

The standard connect timeouts are way to long so we add a timeout to
the connect calls.  Also implement the --quick option which is already
used by gpg for non-important requests (e.g. looking up a key for
verification).

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-06-08 09:37:36 +02:00
Werner Koch
3533b85440
dirmngr: New option --disable-ipv6
* dirmngr/dirmngr.h (struct opt): Add field 'disable_ipv6'.
* dirmngr/dirmngr.c (oDisableIPv6): New const.
(opts): New option --disable-ipv6.
(parse_rereadable_options): Set that option.
* dirmngr/dns-stuff.c (opt_disable_ipv6): New var.
(set_dns_disable_ipv6): New.
(resolve_name_standard): Make use of it.
* dirmngr/ks-engine-finger.c (ks_finger_fetch): Take care of
OPT.DISABLE_IPV6.
* dirmngr/ks-engine-hkp.c (map_host): Ditto.
(send_request): Ditto.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/ocsp.c (do_ocsp_request): Ditto.

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-04-03 20:56:12 +02:00
Werner Koch
493c142e58
dirmngr: New Assuan option "http-crl".
* 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>
2017-02-21 09:37:07 +01:00
Werner Koch
64fffd0ce2
dirmngr: First take on ntbtls cert verification.
* 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>
2017-02-19 10:36:43 +01:00
Werner Koch
a74902cccd
dirmngr: Add per-session verify callback to http.c
* dirmngr/http.h (http_verify_cb_t): New type.
* dirmngr/http.c (http_session_s): Add fields flags, verify_cb, and
verify_cb_value.
(http_session_new): Remove arg tls_priority.  Add args verify_cb and
verify-cb_value.  Store them in the session object.
(send_request): Use per-session verify callback.
(http_verify_server_credentials) [HTTP_USE_NTBTLS]: Return
GPG_ERR_NOT_IMPLEMENTED.
* dirmngr/ks-engine-hkp.c (send_request): Adjust for changed
http_session_new.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (main): Ditto.

* dirmngr/server.c (do_get_cert_local): Replace xmalloc by malloc.

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-02-18 16:39:02 +01:00
Werner Koch
7440119e72
dirmngr: New option --no-use-tor and internal changes.
* dirmngr/dns-stuff.c (disable_dns_tormode): New.
* dirmngr/dirmngr.c (oNoUseTor): New const.
(opts): New option --no-use-tor.
(tor_mode): New var.
(parse_rereadable_options): Change to use TOR_MODE.
(dirmngr_use_tor): New.
(set_tor_mode): Call disable_dns_tormode.  Implement oNoUseTor.
* dirmngr/dirmngr.h (opt): Remove field 'use_tor'.  Replace all
references by a call to dirmngr_use_tor().
* dirmngr/server.c (cmd_getinfo): Distinguish between default and
enforced TOR_MODE.
--

This patch replaces the global variable opt.use_tar by a function
testing a file local mode flag.  This patch prepares for a
use-tor-if-available mode.

GnuPG-bug-id: 2935
Signed-off-by: Werner Koch <wk@gnupg.org>
2017-02-01 17:54:14 +01:00
Werner Koch
72736af86a
dirmngr: New option --disable-ipv4.
* dirmngr/dirmngr.c (oDisableIPv4): New const.
(opts): New option --disable-ipv4.
(parse_rereadable_options): Set that option.
* dirmngr/dirmngr.h (opt): New field 'disable_ipv4'.
* dirmngr/dns-stuff.c (opt_disable_ipv4): bew var.
(set_dns_disable_ipv4): New.
(resolve_name_standard): Skip v4 addresses when OPT_DISABLE_IPV4 is
set.
* dirmngr/ks-engine-hkp.c (map_host): Ditto.
(send_request): Pass HTTP_FLAG_IGNORE_IPv4 if opt.disable_v4 is set.
* dirmngr/crlfetch.c (crl_fetch): Ditto.
* dirmngr/ks-engine-finger.c (ks_finger_fetch): Ditto.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/ocsp.c (do_ocsp_request): Ditto.

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-01-24 20:52:24 +01:00
Werner Koch
af5979a42b
Fix format string errors and some missing error case initialization.
* common/logging.c (do_logv): Remove extra parentheses in comparison.

* dirmngr/dns-stuff.c (resolve_addr_libdns): Init RES so that
dns_res_close is given a defined value in the error case.

* dirmngr/http.c (cookie_read, cookie_write) [HTTP_USE_NTBTLS]: Fix
format string char.

* dirmngr/ks-engine-hkp.c (ks_hkp_help): Remove duplicate "const".
* dirmngr/ks-engine-http.c (ks_http_help): Ditto.
* dirmngr/ks-engine-kdns.c (ks_kdns_help): Ditto.
* dirmngr/ks-engine-ldap.c (ks_ldap_help): Ditto.

* scd/app-p15.c (send_keypairinfo, do_getattr): Fix format string
char.
* tools/gpgconf-comp.c (gpg_agent_runtime_change): Init PID for the
error case.
(scdaemon_runtime_change): Ditto.
(dirmngr_runtime_change): Ditto.

* tools/gpgconf.c (query_swdb): Init VALUE_SIZE_UL.

Signed-off-by: Werner Koch <wk@gnupg.org>
2017-01-23 16:33:01 +01:00
Werner Koch
4d7dc432b5
Change all http://www.gnu.org in license notices to https://
--
2016-11-05 12:02:19 +01:00
Damien Goutte-Gattat
60428c24fb
dirmngr: fix handling of HTTP redirections
* dirmngr/ks-engine-http.c (ks_http_fetch): Reinitialize HTTP session
when following a HTTP redirection.

Signed-off-by: Damien Goutte-Gattat <dgouttegattat@incenp.org>
2016-07-14 15:44:21 +02:00
Werner Koch
c3aeda82b8
dirmngr: Use system provided root CAs with KS_FETCH.
* dirmngr/ks-engine-http.c (ks_http_fetch): Use HTTP_FLAG_TRUST_SYS.

Signed-off-by: Werner Koch <wk@gnupg.org>
2016-04-27 08:18:37 +02:00
Werner Koch
fd765df6a7
http: Allow to request system defined CAs for TLS.
* dirmngr/http.h (HTTP_FLAG_TRUST_DEF, HTTP_FLAG_TRUST_SYS): New.
* dirmngr/http.c (http_session_new): Add arg "flags".
* dirmngr/ks-engine-hkp.c (send_request): Use new flag
HTTP_FLAG_TRUST_DEF for the new arg of http_session_new.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (main): Ditto.
--

Signed-off-by: Werner Koch <wk@gnupg.org>
2016-04-26 21:57:56 +02:00
Andre Heinecke
6272f24312 dirmngr: Fix https never reported in general help
* dirmngr/ks-engine-http.c (ks_hkp_help): Also print https
when supported and no uri provided.

--
Wrong reporting was pointed out by K_F, again.
2016-04-15 17:50:07 +02:00
Andre Heinecke
a0642856b2 dirmngr: Fix https incorrectly reported in help
* dirmngr/ks-engine-http.c (ks_hkp_help): Only print https if tls
is supported.

--
Wrong reporting was pointed out by K_F. Check is the same as
in ks-engine-hkp.c
2016-04-15 17:30:05 +02:00
Daniel Kahn Gillmor
afb8696126
dirmngr: Use sks-keyservers CA by default for the hkps pool.
* dirmngr/Makefile.am (dist_pkgdata_DATA): Add sks-keyservers.netCA.pem.
* dirmngr/http.c (http_session_new): Add optional arg
intended_hostname and set a default cert.
* dirmngr/ks-engine-hkp.c (send_request): Pass httphost to
http_session_new.
--

Ship the certificate for the sks-keyservers hkps pool.  If the user
has specified that they want to use
hkps://hkps.pool.sks-keyservers.net, and they have not specified any
hkp-cacert explicitly, then initialize the trust path with this
specific trust anchor.

Co-authored-by: wk@gnupg.org
Signed-off-by: Werner Koch <wk@gnupg.org>
2016-01-22 11:53:49 +01:00
Werner Koch
c091816b4a
dirmngr: Add option --use-tor as a stub.
* dirmngr/dirmngr.h (opt): Add field "use_tor".
* dirmngr/dirmngr.c (oUseTor): New.
(opts): Add --use-tor.
(parse_rereadable_options): Set option.
(main): Tell gpgconf about that option.

* dirmngr/crlfetch.c (crl_fetch): Pass TOR flag to the http module and
return an error if LDAP is used in TOR mode.
(ca_cert_fetch): Return an error in TOR mode.
(start_cert_fetch): Ditto.
* dirmngr/ks-engine-finger.c (ks_finger_fetch): Pass TOR flag to the
http module.
* dirmngr/ks-engine-hkp.c (send_request): Ditto.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/ks-engine-ldap.c (ks_ldap_get): Return an error in TOR mode.
(ks_ldap_search): Ditto.
(ks_ldap_put): Ditto.
* dirmngr/ocsp.c (do_ocsp_request): Ditto.  Also pass TOR flag to the
http module.

* dirmngr/server.c (option_handler): Add "honor-keyserver-url-used".
(cmd_dns_cert): Return an error in TOR mode.
(cmd_getinfo): Add subcommand "tor"
* tools/gpgconf-comp.c (gc_options_dirmngr): Add TOR group.
--

More work is required to actually make --use-tor useful.  For now it
returns an error for almost all network access but as soon as we have
added the TOR feature to the http module some parts will start to
work.

Signed-off-by: Werner Koch <wk@gnupg.org>
2015-09-18 16:21:31 +02:00
Werner Koch
a0dead5edc
dirmngr: Add http proxy support for keyservers.
* dirmngr/dirmngr.h (server_control_s): Add field http_proxy.
* dirmngr/dirmngr.c (dirmngr_init_default_ctrl): Copy http_proxy value
from OPT.
(dirmngr_deinit_default_ctrl): New.
(main): Call dirmngr_deinit_default_ctrl.
* dirmngr/server.c (start_command_handler): Ditto.
(option_handler): Add option "http-proxy".
* dirmngr/crlfetch.c (crl_fetch): Take http_proxy from CTRL.
* dirmngr/ocsp.c (do_ocsp_request): Ditto.
* dirmngr/ks-engine-hkp.c (send_request): Add proxy support.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.

Signed-off-by: Werner Koch <wk@gnupg.org>
2015-04-21 17:15:34 +02:00
Werner Koch
84419f42da dirmngr: Support https for KS_FETCH.
* dirmngr/ks-engine-hkp.c (cert_log_cb): Move to ...
* dirmngr/misc.c (cert_log_cb): here.
* dirmngr/ks-engine-http.c (ks_http_fetch): Support 307-redirection
and https.
--

Note that this requires that the root certificates are registered using
the --hkp-cacert option.  Eventually we may introduce a separate
option to allow using different CAs for KS_FETCH and keyserver based
requests.
2014-09-10 10:37:48 +02:00
Werner Koch
8b90d79818 http: Allow overriding of the Host header.
* common/http.c (http_open): Add arg httphost.
(http_open_document): Pass NULL for httphost.
(send_request): Add arg httphost.  If given, use HTTPHOST instead of
SERVER.  Use https with a proxy if requested.
(http_verify_server_credentials): Do not stop at the first error
message.
* dirmngr/ocsp.c (do_ocsp_request): Adjust call to http_open.
* keyserver/curl-shim.c (curl_easy_perform): Ditto.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/ks-engine-hkp.c (ks_hkp_help): Ditto.
2014-05-16 21:01:08 +02:00
Werner Koch
096e7457ec Change all quotes in strings and comments to the new GNU standard.
The asymmetric quotes used by GNU in the past (`...') don't render
nicely on modern systems.  We now use two \x27 characters ('...').

The proper solution would be to use the correct Unicode symmetric
quotes here.  However this has the disadvantage that the system
requires Unicode support.  We don't want that today.  If Unicode is
available a generated po file can be used to output proper quotes.  A
simple sed script like the one used for en@quote is sufficient to
change them.

The changes have been done by applying

  sed -i "s/\`\([^'\`]*\)'/'\1'/g"

to most files and fixing obvious problems by hand.  The msgid strings in
the po files were fixed with a similar command.
2012-06-05 19:29:22 +02:00
Werner Koch
231d27e0fe Make HKP keyserver engine work again.
We had some debug code here which prevented it from working.
The host selection code still needs a review!

	* ks-engine-http.c (ks_http_help): Do not print help for hkp.
	* ks-engine-hkp.c (ks_hkp_help): Print help only for hkp.
	(send_request): Remove test code.
	(map_host): Use xtrymalloc.

	* certcache.c (classify_pattern): Remove unused variable and make
	explicit substring search work.
2011-11-24 16:15:08 +01:00
Werner Koch
1cdcab6892 Add framework to print keyserver engine information 2011-02-09 18:20:05 +01:00
Werner Koch
f02d972aec Support key fetching using HTTP.
A simple test case is:

  gpg2 --fetch-key http://werner.eifelkommune.de/mykey.asc
2011-02-09 15:42:29 +01:00