* dirmngr/http.c (enum auth_negotiate_states): New.
(struct proxy_info_s): Add new fields.
(release_proxy_info): Free Windows stuff.
(proxy_get_token): New. Implemented only for Windows for now.
(run_proxy_connect): Add support for auth method Negotiation.
(store_header): Keep some header lines separate.
--
The code does something but I have not yet been able to test it due
to problems setting up Squid with AD authentication. As of now it
will respond with a failure but that should not be worse than not to
implement Negotiation.
Supporting Negotiation using GSS for Unix should eventually also be
done.
GnuPG-bug-id: 6719
* dirmngr/http.c (cookie_s): Add fields pending, up_to_empty_line,
last_was_lf, and last_was_lfcr.
(http_context_s): Add field keep-alive.
(http_wait_response): Set up_to_empty_line. Take care of keep_alive
flag.
(coookie_read): Implement detection of empty lines.
(cookie_write): Free the pending buffer.
--
The problem we fix here is that we already buffered stuff beyond the
empty line which marks the start of the content-length counting. Thus
we tried to wait for more bytes despite that everything had already
been read. This bug might have showed up more often in the real world
since the we changed the BUFSIZ on Windows from 512 byte to 8k. It
also depends on the length of the headers and whether the server
closed the connection so that we ignored the Content-Length.
The bug was introduced earlier than 2010 and could have the effect
that a connection got stuck until the network layer timed out.
Note that the keep-alive parts of the patch are not yet used.
* dirmngr/http.c: Remove gnutls version specific code.
(send_request): Factor some code out to ...
(run_proxy_connect): new.
(mk_proxy_request): new.
(mk_std_request): new.
* configure.ac (NEED_GNUTLS_VERSION): Require 3.2.
--
This patch is to factor out some code and also to remove support for
legacy gnutls versions. Note that gnutls 3.2 was released 10 years
ago.
* configure.ac (NEED_NTBTLS_VERSION): Require at least 0.2.0 so that
we can remove a conditional compilation.
* dirmngr/http.c (struct proxy_info_s): New.
(release_proxy_info): New to keep proxy information in one object.
(send_request): Factor some code out to ...
(get_proxy_for_url): this,
(send_request_basic_checks): this,
(send_request_set_sni): this,
(run_ntbtls_handshake): this,
(run_gnutls_handshake): and this.
--
Note that this also removes some never used code. For example the
NTBTLS handshake has code taken from GNUTLS which was never used due
to the different ways on how the certificates are checked.
The proxy code has been factored out to make to prepare further
authentication methods. The proxy_info_t was introduced for the same
reason.
Tested against gnutls and ntbtls builds. No proxy tests yet done,
because we need more sophisticated tests anyway.
GnuPG-bug-id: 5768
* configure.ac (DIRMNGR_DEFAULT_KEYSERVER): Change to
keyserver.ubuntu.com.
* dirmngr/certcache.c (cert_cache_init): Disable default pool cert.
* dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Ditto.
* dirmngr/http.c (http_session_new): Ditto.
* dirmngr/server.c (make_keyserver_item): Use a different mapping for
the gnupg.net names.
--
Due to the unfortunate shutdown of the keyserver pool, the long term
defaults won't work anymore. Thus it is better to change them.
For https access keyserver.ubuntu.com is now used because it can be
expected that this server can stand the load from newer gnupg LTS
versions.
For http based access the Dutch Surfnet keyserver is used. However
due to a non-standard TLS certificate this server can not easily be
made the default for https.
Note: that the default server will be changed again as soon as a new
connected keyserver infrastructure has been established.
* dirmngr/http.h (HTTP_PARSE_NO_SCHEME_CHECK): New.
* dirmngr/http.c (http_parse_uri): Use this flag. Change all callers
to use the new macro for better readability.
(do_parse_uri): Add pseudo scheme "opaque".
(uri_query_value): New.
--
This scheme can be used to convey arbitrary strings in a parsed_uri_t
object.
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/sysutils.c (gnupg_access): New. Replace all calls to access
by this wrapper.
* common/homedir.c (w32_shgetfolderpath): Change to return UTF-8
directory name.
(standard_homedir): Adjust for change.
(w32_commondir, gnupg_cachedir): Ditto.
--
Also use SHGetFolderPathW instead of SHGetFolderPathA on Windows.
This is required to correctly handle non-ascii filenames on Windows.
GnuPG-bug-id: 5098
(cherry picked from commit c94ee1386e)
* 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.c: Include dirmngr-status.h
(http_prepare_redirect): Emit WARNING status lines for redirection
problems.
* dirmngr/http.h: Include fwddecl.h.
(struct http_redir_info_s): Add field ctrl.
* dirmngr/ks-engine-hkp.c (send_request): Set it.
* dirmngr/ks-engine-http.c (ks_http_fetch): Set it.
* g10/call-dirmngr.c (ks_status_cb): Detect the two new warnings.
--
This should make it easier to diagnose problems with bad WKD servers.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dns-stuff.c (cached_inet_support): New variable.
(dns_stuff_housekeeping): New.
(check_inet_support): New.
* dirmngr/http.c (connect_server): Use only detected interfaces.
* dirmngr/dirmngr.c (housekeeping_thread): Flush the new cache.
--
This currently works only for Windows but that is where users really
ran into problems. The old workaround was to configure disable-ipv4
or disable-ipv6.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http.c (same_host_p): Consider certain subdomains to be the
same.
--
GnuPG-bug-id: 4603
Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit 37f0c55c7b)
* dirmngr/http.c (same_host_p): Add exception table.
--
Please: Adding entries to this table shall be an exception and not the
rule.
Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit 134c3c1652)
* dirmngr/http.c (http_status2string): New.
--
Right now only the standard 5xx codes.
Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit dc61f4ecea)
* dirmngr/http.h (parsed_uri_s): Add fields off_host and off_path.
(http_redir_info_t): New.
* dirmngr/http.c (do_parse_uri): Set new fields.
(same_host_p): New.
(http_prepare_redirect): New.
* dirmngr/t-http-basic.c: New test.
* dirmngr/ks-engine-hkp.c (send_request): Use http_prepare_redirect
instead of the open code.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
--
With this change a http query will not follow a redirect unless the
Location header gives the same host. If the host is different only
the host and port is taken from the Location header and the original
path and query parts are kept.
Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit fa1b1eaa42)
* dirmngr/http.c (send_request): Print the used TLS library in debug
mode.
--
We allow two different TLS libararies and thus it is useful to see
that in the debug output of bug reports.
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/http.c (send_request): If a http proxy is to be used, and we
want to use TLS, try to use the CONNECT method to get a connection to
the target server.
GnuPG-bug-id: 2940
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/http.c (http_wait_response): Get the 'use_tls' flag from the
write cookie, not from the URI.
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/http.c (send_request): Do not use the 'srvtag' intended for
the target host to connect to the http proxy.
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/http.c (parse_uri): Keep an unmodified copy of the URI.
* dirmngr/http.h (struct parsed_uri_s): New field 'original'.
* dirmngr/ks-action.c (ks_action_get): Properly handle http and https
URLs.
--
If a key has a http or https URL as preferred keyserver, fetch the key
from there. Previously, dirmngr unconditionally interpreted these
URLs as hkp servers.
GnuPG-bug-id: 2924
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/http.c: Include fcntl.h.
(http_session_s): Add field 'connect_timeout'.
(http_session_new): Clear that.
(http_session_set_timeout): New function.
(my_wsagetlasterror) [W32]: New.
(connect_with_timeout): New function.
(connect_server): Add arg 'timeout' and call connect_with_timeout.
(send_request): Add arg 'timeout' and pass it to connect_server.
(http_raw_connect): Add arg 'timeout'.
(http_open): Pass TIMEOUT from the session to connect_server.
--
Note that the non-blocking connect we implement is traditional a
pretty non-portable thing due to slighly different semantics. The
code uses the strategy W. Richard Stevens suggested in 1998.
Hopefully current OS versions got it all right.
The code has not been tested on Windows.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http.c (read_server, write_server): Use assuan_fd_t.
(http_wait_response): Use FD2INT to get unsigned integer fd.
(read_server, write_server): Likewise.
(simple_cookie_read, simple_cookie_write): Use assuan_fd_t.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* dirmngr/http.c (simple_cookie_read, simple_cookie_write): Only
valid with HTTP_USE_NTBTLS.
(_my_socket_new): Simply cast to int since it's for debug.
(_my_socket_ref, _my_socket_unref): Likewise.
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
* dirmngr/dirmngr.h (DBG_EXTPROG_VALUE, DBG_EXTPROG): New macros.
* dirmngr/dirmngr.c (debug_flags): Add flag "extprog".
(handle_connections): Use a macro instead of -1 for an invalid socket.
* dirmngr/loadswdb.c (verify_status_cb): Debug the gpgv call.
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>
