mirror of
https://github.com/moparisthebest/curl
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8996300211
- Move verify_certificate functionality in schannel.c into a new file called schannel_verify.c. Additionally, some structure defintions from schannel.c have been moved to schannel.h to allow them to be used in schannel_verify.c. - Make verify_certificate functionality for Schannel available on all versions of Windows instead of just Windows CE. verify_certificate will be invoked on Windows CE or when the user specifies CURLOPT_CAINFO and CURLOPT_SSL_VERIFYPEER. - In verify_certificate, create a custom certificate chain engine that exclusively trusts the certificate store backed by the CURLOPT_CAINFO file. - doc updates of --cacert/CAINFO support for schannel - Use CERT_NAME_SEARCH_ALL_NAMES_FLAG when invoking CertGetNameString when available. This implements a TODO in schannel.c to improve handling of multiple SANs in a certificate. In particular, all SANs will now be searched instead of just the first name. - Update tool_operate.c to not search for the curl-ca-bundle.crt file when using Schannel to maintain backward compatibility. Previously, any curl-ca-bundle.crt file found in that search would have been ignored by Schannel. But, with CAINFO support, the file found by that search would have been used as the certificate store and could cause issues for any users that have curl-ca-bundle.crt in the search path. - Update url.c to not set the build time CURL_CA_BUNDLE if the selected SSL backend is Schannel. We allow setting CA location for schannel only when explicitly specified by the user via CURLOPT_CAINFO / --cacert. - Add new test cases 3000 and 3001. These test cases check that the first and last SAN, respectively, matches the connection hostname. New test certificates have been added for these cases. For 3000, the certificate prefix is Server-localhost-firstSAN and for 3001, the certificate prefix is Server-localhost-secondSAN. - Remove TODO 15.2 (Add support for custom server certificate validation), this commit addresses it. Closes https://github.com/curl/curl/pull/1325
85 lines
3.7 KiB
Groff
85 lines
3.7 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 - 2017, 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.haxx.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_CAINFO 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_CAINFO \- path to Certificate Authority (CA) bundle
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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_CAINFO, char *path);
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.SH DESCRIPTION
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Pass a char * to a zero terminated string naming a file holding one or more
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certificates to verify the peer with.
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If \fICURLOPT_SSL_VERIFYPEER(3)\fP is zero and you avoid verifying the
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server's certificate, \fICURLOPT_CAINFO(3)\fP need not even indicate an
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accessible file.
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This option is by default set to the system path where libcurl's cacert bundle
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is assumed to be stored, as established at build time.
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If curl is built against the NSS SSL library, the NSS PEM PKCS#11 module
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(libnsspem.so) needs to be available for this option to work properly.
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Starting with curl-7.55.0, if both \fICURLOPT_CAINFO(3)\fP and
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\fICURLOPT_CAPATH(3)\fP are unset, NSS-linked libcurl tries to load
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libnssckbi.so, which contains a more comprehensive set of trust information
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than supported by nss-pem, because libnssckbi.so also includes information
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about distrusted certificates.
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(iOS and macOS only) If curl is built against Secure Transport, then this
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option is supported for backward compatibility with other SSL engines, but it
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should not be set. If the option is not set, then curl will use the
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certificates in the system and user Keychain to verify the peer, which is the
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preferred method of verifying the peer's certificate chain.
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(Schannel/WinSSL only) This option is supported for WinSSL in Windows 7 or
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later with libcurl 7.60 or later. This option is supported for backward
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compatibility with other SSL engines; instead it is recommended to use Windows'
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store of root certificates (the default for WinSSL).
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The application does not have to keep the string around after setting this
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option.
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.SH DEFAULT
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Built-in system specific
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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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_CAINFO, "/etc/certs/cabundle.pem");
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ret = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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.fi
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.SH AVAILABILITY
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For SSL engines that don't support certificate files the CURLOPT_CAINFO option
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is ignored. Refer to https://curl.haxx.se/docs/ssl-compared.html
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
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CURLE_OUT_OF_MEMORY if there was insufficient heap space.
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.SH "SEE ALSO"
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.BR CURLOPT_CAPATH "(3), "
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.BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "
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