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47c4e3e00a
* 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.
137 lines
4.0 KiB
C
137 lines
4.0 KiB
C
/* http-ntbtls.c - Support for using NTBTLS with http.c
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* Copyright (C) 2017 Werner Koch
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dirmngr.h"
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#include "certcache.h"
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#include "validate.h"
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#include "http-common.h"
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#ifdef HTTP_USE_NTBTLS
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# include <ntbtls.h>
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/* The callback used to verify the peer's certificate. */
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gpg_error_t
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gnupg_http_tls_verify_cb (void *opaque,
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http_t http,
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http_session_t session,
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unsigned int http_flags,
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void *tls_context)
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{
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ctrl_t ctrl = opaque;
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ntbtls_t tls = tls_context;
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gpg_error_t err;
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int idx;
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ksba_cert_t cert;
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ksba_cert_t hostcert = NULL;
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unsigned int validate_flags;
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/* const char *hostname; */
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(void)http;
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(void)session;
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log_assert (ctrl && ctrl->magic == SERVER_CONTROL_MAGIC);
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log_assert (!ntbtls_check_context (tls));
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/* Get the peer's certs fron ntbtls. */
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for (idx = 0;
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(cert = ntbtls_x509_get_peer_cert (tls, idx)); idx++)
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{
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if (!idx)
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hostcert = cert;
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else
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{
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/* Quick hack to make verification work by inserting the supplied
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* certs into the cache. FIXME! */
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cache_cert (cert);
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ksba_cert_release (cert);
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}
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}
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if (!idx)
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{
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err = gpg_error (GPG_ERR_MISSING_CERT);
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goto leave;
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}
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validate_flags = VALIDATE_FLAG_TLS;
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/* If we are using the standard hkps:// pool use the dedicated root
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* certificate. Note that this differes from the GnuTLS
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* implementation which uses this special certificate only if no
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* other certificates are configured. */
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/* Disabled for 2.2.19 to due problems with the standard hkps pool. */
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/* hostname = ntbtls_get_hostname (tls); */
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/* if (hostname */
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/* && !ascii_strcasecmp (hostname, get_default_keyserver (1))) */
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/* { */
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/* validate_flags |= VALIDATE_FLAG_TRUST_HKPSPOOL; */
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/* } */
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/* else */
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{
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/* Use the certificates as requested from the HTTP module. */
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if ((http_flags & HTTP_FLAG_TRUST_CFG))
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validate_flags |= VALIDATE_FLAG_TRUST_CONFIG;
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if ((http_flags & HTTP_FLAG_TRUST_DEF))
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validate_flags |= VALIDATE_FLAG_TRUST_HKP;
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if ((http_flags & HTTP_FLAG_TRUST_SYS))
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validate_flags |= VALIDATE_FLAG_TRUST_SYSTEM;
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/* If HKP trust is requested and there are no HKP certificates
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* configured, also try the standard system certificates. */
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if ((validate_flags & VALIDATE_FLAG_TRUST_HKP)
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&& !cert_cache_any_in_class (CERTTRUST_CLASS_HKP))
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validate_flags |= VALIDATE_FLAG_TRUST_SYSTEM;
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}
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if ((http_flags & HTTP_FLAG_NO_CRL))
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validate_flags |= VALIDATE_FLAG_NOCRLCHECK;
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err = validate_cert_chain (ctrl, hostcert, NULL, validate_flags, NULL);
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leave:
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ksba_cert_release (hostcert);
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return err;
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}
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#else /*!HTTP_USE_NTBTLS*/
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/* Dummy function used when not build without ntbtls support. */
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gpg_error_t
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gnupg_http_tls_verify_cb (void *opaque,
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http_t http,
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http_session_t session,
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unsigned int flags,
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void *tls_context)
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{
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(void)opaque;
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(void)http;
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(void)session;
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(void)flags;
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(void)tls_context;
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return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
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}
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#endif /*!HTTP_USE_NTBTLS*/
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