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.\" **************************************************************************
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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 - 2014, 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_CRLFILE 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_CRLFILE \- specify a Certificate Revocation List file
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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_CRLFILE, char *file);
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.SH DESCRIPTION
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Pass a char * to a zero terminated string naming a \fIfile\fP with the
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concatenation of CRL (in PEM format) to use in the certificate validation that
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occurs during the SSL exchange.
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When curl is built to use NSS or GnuTLS, there is no way to influence the use
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of CRL passed to help in the verification process. When libcurl is built with
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OpenSSL support, X509_V_FLAG_CRL_CHECK and X509_V_FLAG_CRL_CHECK_ALL are both
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set, requiring CRL check against all the elements of the certificate chain if
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a CRL file is passed.
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This option makes sense only when used in combination with the
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\fICURLOPT_SSL_VERIFYPEER(3)\fP option.
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A specific error code (\fICURLE_SSL_CRL_BADFILE\fP) is defined with the
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option. It is returned when the SSL exchange fails because the CRL file cannot
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be loaded. A failure in certificate verification due to a revocation
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information found in the CRL does not trigger this specific error.
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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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NULL
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.SH PROTOCOLS
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All TLS-based protocols
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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Added in 7.19.0
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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_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "
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