url: add CURLOPT_SSL_VERIFYSTATUS option
This option can be used to enable/disable certificate status verification using the "Certificate Status Request" TLS extension defined in RFC6066 section 8. This also adds the CURLE_SSL_INVALIDCERTSTATUS error, to be used when the certificate status verification fails, and the Curl_ssl_cert_status_request() function, used to check whether the SSL backend supports the status_request extension.
This commit is contained in:
Alessandro Ghedini
Daniel Stenberg
parent
5e113a18c5
commit
3af90a6e19
53
docs/libcurl/opts/CURLOPT_SSL_VERIFYSTATUS.3
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53
docs/libcurl/opts/CURLOPT_SSL_VERIFYSTATUS.3
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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 http://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_SSL_VERIFYSTATUS 3 "04 Dec 2014" "libcurl 7.40.0" "curl_easy_setopt options"
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.SH NAME
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CURLOPT_SSL_VERIFYSTATUS \- verify the certificate's status
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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_SSL_VERIFYSTATUS, long verify);
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.SH DESCRIPTION
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Pass a long as parameter to enable or disable.
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This option determines whether libcurl verifies the status of the server cert
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using the "Certificate Status Request" TLS extension (aka. OCSP stapling).
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Note that if this option is enabled but the server does not support the TLS
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extension, the verification will fail.
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.SH DEFAULT
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0
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.SH PROTOCOLS
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All TLS based protocols: HTTPS, FTPS, IMAPS, POP3, SMTPS etc.
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.SH EXAMPLE
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TODO
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.SH AVAILABILITY
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This is currently only supported by the GnuTLS and NSS TLS backends.
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.SH RETURN VALUE
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Returns CURLE_OK if OCSP stapling is supported by the SSL backend, otherwise
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returns CURLE_NOT_BUILT_IN.
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.SH "SEE ALSO"
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.BR CURLOPT_SSL_VERIFYHOST "(3), "
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.BR CURLOPT_SSL_VERIFYPEER "(3), "
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.BR CURLOPT_CAINFO "(3), "
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@ -118,6 +118,7 @@ CURLE_SSL_CRL_BADFILE 7.19.0
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CURLE_SSL_ENGINE_INITFAILED 7.12.3
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CURLE_SSL_ENGINE_NOTFOUND 7.9.3
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CURLE_SSL_ENGINE_SETFAILED 7.9.3
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CURLE_SSL_INVALIDCERTSTATUS 7.41.0
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CURLE_SSL_ISSUER_ERROR 7.19.0
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CURLE_SSL_PEER_CERTIFICATE 7.8 7.17.1
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CURLE_SSL_PINNEDPUBKEYNOTMATCH 7.39.0
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@ -513,6 +514,7 @@ CURLOPT_SSL_OPTIONS 7.25.0
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CURLOPT_SSL_SESSIONID_CACHE 7.16.0
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CURLOPT_SSL_VERIFYHOST 7.8.1
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CURLOPT_SSL_VERIFYPEER 7.4.2
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CURLOPT_SSL_VERIFYSTATUS 7.41.0
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CURLOPT_STDERR 7.1
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CURLOPT_TCP_KEEPALIVE 7.25.0
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CURLOPT_TCP_KEEPIDLE 7.25.0
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@ -523,6 +523,7 @@ typedef enum {
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session will be queued */
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CURLE_SSL_PINNEDPUBKEYNOTMATCH, /* 90 - specified pinned public key did not
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match */
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CURLE_SSL_INVALIDCERTSTATUS, /* 91 - invalid certificate status */
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CURL_LAST /* never use! */
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} CURLcode;
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@ -1622,6 +1623,9 @@ typedef enum {
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/* Path to Unix domain socket */
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CINIT(UNIX_SOCKET_PATH, OBJECTPOINT, 231),
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/* Set if we should verify the certificate status. */
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CINIT(SSL_VERIFYSTATUS, LONG, 232),
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CURLOPT_LASTENTRY /* the last unused */
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} CURLoption;
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@ -5,7 +5,7 @@
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 2004 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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* Copyright (C) 2004 - 2015, 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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@ -301,6 +301,9 @@ curl_easy_strerror(CURLcode error)
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case CURLE_SSL_PINNEDPUBKEYNOTMATCH:
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return "SSL public key does not match pinned public key";
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case CURLE_SSL_INVALIDCERTSTATUS:
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return "SSL server certificate status verification FAILED";
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/* error codes not used by current libcurl */
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case CURLE_OBSOLETE20:
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case CURLE_OBSOLETE24:
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11
lib/url.c
11
lib/url.c
@ -1997,6 +1997,17 @@ CURLcode Curl_setopt(struct SessionHandle *data, CURLoption option,
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data->set.ssl.verifyhost = (0 != arg)?TRUE:FALSE;
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break;
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case CURLOPT_SSL_VERIFYSTATUS:
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/*
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* Enable certificate status verifying.
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*/
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if(!Curl_ssl_cert_status_request()) {
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result = CURLE_NOT_BUILT_IN;
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break;
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}
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data->set.ssl.verifystatus = (0 != va_arg(param, long))?TRUE:FALSE;
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break;
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case CURLOPT_SSL_CTX_FUNCTION:
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#ifdef have_curlssl_ssl_ctx
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/*
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@ -366,6 +366,7 @@ struct ssl_config_data {
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bool verifypeer; /* set TRUE if this is desired */
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bool verifyhost; /* set TRUE if CN/SAN must match hostname */
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bool verifystatus; /* set TRUE if certificate status must be checked */
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char *CApath; /* certificate dir (doesn't work on windows) */
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char *CAfile; /* certificate to verify peer against */
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const char *CRLfile; /* CRL to check certificate revocation */
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@ -848,4 +848,16 @@ void Curl_ssl_md5sum(unsigned char *tmp, /* input */
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#endif
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}
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/*
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* Check whether the SSL backend supports the status_request extension.
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*/
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bool Curl_ssl_cert_status_request(void)
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{
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#ifdef curlssl_cert_status_request
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return curlssl_cert_status_request();
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#else
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return FALSE;
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#endif
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}
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#endif /* USE_SSL */
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@ -116,6 +116,8 @@ void Curl_ssl_md5sum(unsigned char *tmp, /* input */
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CURLcode Curl_pin_peer_pubkey(const char *pinnedpubkey,
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const unsigned char *pubkey, size_t pubkeylen);
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bool Curl_ssl_cert_status_request(void);
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#define SSL_SHUTDOWN_TIMEOUT 10000 /* ms */
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#else
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