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https://github.com/moparisthebest/curl
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53022e1893
- New libcurl options CURLOPT_DOH_SSL_VERIFYHOST, CURLOPT_DOH_SSL_VERIFYPEER and CURLOPT_DOH_SSL_VERIFYSTATUS do the same as their respective counterparts. - New curl tool options --doh-insecure and --doh-cert-status do the same as their respective counterparts. Prior to this change DOH SSL certificate verification settings for verifyhost and verifypeer were supposed to be inherited respectively from CURLOPT_SSL_VERIFYHOST and CURLOPT_SSL_VERIFYPEER, but due to a bug were not. As a result DOH verification remained at the default, ie enabled, and it was not possible to disable. This commit changes behavior so that the DOH verification settings are independent and not inherited. Ref: https://github.com/curl/curl/pull/4579#issuecomment-554723676 Fixes https://github.com/curl/curl/issues/4578 Closes https://github.com/curl/curl/pull/6597
86 lines
3.3 KiB
Groff
86 lines
3.3 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) 1998 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_DOH_SSL_VERIFYHOST 3 "11 Feb 2021" "libcurl 7.76.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_DOH_SSL_VERIFYHOST \- verify the host name in the DOH SSL certificate
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.SH SYNOPSIS
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DOH_SSL_VERIFYHOST, long verify);
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.SH DESCRIPTION
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Pass a long set to 2L as asking curl to \fIverify\fP the DOH (DNS-over-HTTPS)
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server's certificate name fields against the host name.
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This option is the DOH equivalent of \fICURLOPT_SSL_VERIFYHOST(3)\fP and
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only affects requests to the DOH server.
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When \fICURLOPT_DOH_SSL_VERIFYHOST(3)\fP is 2, the SSL certificate provided by
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the DOH server must indicate that the server name is the same as the server
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name to which you meant to connect to, or the connection fails.
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Curl considers the DOH server the intended one when the Common Name field or a
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Subject Alternate Name field in the certificate matches the host name in the
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DOH URL to which you told Curl to connect.
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When the \fIverify\fP value is set to 1L it is treated the same as 2L. However
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for consistency with the other VERIFYHOST options we suggest use 2 and not 1.
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When the \fIverify\fP value is set to 0L, the connection succeeds regardless of
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the names used in the certificate. Use that ability with caution!
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See also \fICURLOPT_DOH_SSL_VERIFYPEER(3)\fP to verify the digital signature
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of the DOH server certificate. If libcurl is built against NSS and
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\fICURLOPT_DOH_SSL_VERIFYPEER(3)\fP is zero,
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\fICURLOPT_DOH_SSL_VERIFYHOST(3)\fP is also set to zero and cannot be
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overridden.
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.SH DEFAULT
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2
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.SH PROTOCOLS
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DOH
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.SH EXAMPLE
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.nf
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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curl_easy_setopt(curl, CURLOPT_DOH_URL, "https://cloudflare-dns.com/dns-query");
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/* Disable host name verification of the DOH server */
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curl_easy_setopt(curl, CURLOPT_DOH_SSL_VERIFYHOST, 0L);
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curl_easy_perform(curl);
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}
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.fi
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.SH AVAILABILITY
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Added in 7.76.0
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If built TLS enabled.
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH "SEE ALSO"
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.BR CURLOPT_DOH_SSL_VERIFYPEER "(3), "
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.BR CURLOPT_SSL_VERIFYHOST "(3), "
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.BR CURLOPT_SSL_VERIFYPEER "(3), "
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.BR CURLOPT_PROXY_SSL_VERIFYPEER "(3), "
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.BR CURLOPT_PROXY_SSL_VERIFYHOST "(3), "
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