curlopt_proxy_crlfile(3) [mojave man page]

CURLOPT_PROXY_CRLFILE(3)				     curl_easy_setopt options					  CURLOPT_PROXY_CRLFILE(3)

NAME

       CURLOPT_PROXY_CRLFILE - specify a proxy Certificate Revocation List file

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_CRLFILE, char *file);

DESCRIPTION

       This option is for connecting to a HTTPS proxy, not a HTTPS server.

       Pass  a char * to a zero terminated string naming a file with the concatenation of CRL (in PEM format) to use in the certificate validation
       that occurs during the SSL exchange.

       When curl is built to use NSS or GnuTLS, there is no way to influence the use of CRL passed to  help  in  the  verification  process.  When
       libcurl	is  built  with OpenSSL support, X509_V_FLAG_CRL_CHECK and X509_V_FLAG_CRL_CHECK_ALL are both set, requiring CRL check against all
       the elements of the certificate chain if a CRL file is passed.

       This option makes sense only when used in combination with the CURLOPT_PROXY_SSL_VERIFYPEER(3) option.

       A specific error code (CURLE_SSL_CRL_BADFILE) is defined with the option. It is returned when the SSL exchange fails because the  CRL  file
       cannot  be  loaded.   A failure in certificate verification due to a revocation information found in the CRL does not trigger this specific
       error.

       The application does not have to keep the string around after setting this option.

DEFAULT

       NULL

PROTOCOLS

       Used with HTTPS proxy.

EXAMPLE

       TODO

AVAILABILITY

       Added in 7.52.0

RETURN VALUE

       Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSO

       CURLOPT_PROXY_SSL_VERIFYPEER(3), CURLOPT_PROXY_SSL_VERIFYHOST(3), CURLOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),

libcurl 7.54.0							 December 21, 2016					  CURLOPT_PROXY_CRLFILE(3)

CURLOPT_PROXY_SSL_VERIFYPEER(3) 			     curl_easy_setopt options				   CURLOPT_PROXY_SSL_VERIFYPEER(3)

NAME

       CURLOPT_PROXY_SSL_VERIFYPEER - verify the proxy's SSL certificate

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_SSL_VERIFYPEER, long verify);

DESCRIPTION

       Pass a long as parameter set to 1L to enable or 0L to disable.

       This  option  tells curl to verifies the authenticity of the HTTPS proxy's certificate. A value of 1 means curl verifies; 0 (zero) means it
       doesn't.

       This is the proxy version of CURLOPT_SSL_VERIFYPEER(3) that's used for ordinary HTTPS servers.

       When negotiating a TLS or SSL connection, the server sends a certificate indicating its identity. Curl verifies whether the certificate	is
       authentic,  i.e.  that  you  can trust that the server is who the certificate says it is.  This trust is based on a chain of digital signa-
       tures, rooted in certification authority (CA) certificates you supply.  curl uses a default bundle of CA certificates (the path for that is
       determined at build time) and you can specify alternate certificates with the CURLOPT_PROXY_CAINFO(3) option or the CURLOPT_PROXY_CAPATH(3)
       option.

       When CURLOPT_PROXY_SSL_VERIFYPEER(3) is enabled, and the verification fails to prove that the  certificate  is  authentic,  the	connection
       fails.  When the option is zero, the peer certificate verification succeeds regardless.

       Authenticating  the  certificate is not enough to be sure about the server. You typically also want to ensure that the server is the server
       you mean to be talking to.  Use CURLOPT_PROXY_SSL_VERIFYHOST(3) for that. The check that the host name in the certificate is valid for  the
       host name you're connecting to is done independently of the CURLOPT_PROXY_SSL_VERIFYPEER(3) option.

       WARNING: disabling verification of the certificate allows bad guys to man-in-the-middle the communication without you knowing it. Disabling
       verification makes the communication insecure. Just having encryption on a transfer is not enough as you cannot be sure that you are commu-
       nicating with the correct end-point.

DEFAULT

       1

PROTOCOLS

       All

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

	 /* Set the default value: strict certificate check please */
	 curl_easy_setopt(curl, CURLOPT_PROXY_SSL_VERIFYPEER, 1L);

	 curl_easy_perform(curl);
       }

AVAILABILITY

       Added in 7.52.0

       If built TLS enabled.

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_PROXY_SSL_VERIFYHOST(3), CURLOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST(3),

libcurl 7.54.0							 December 16, 2016				   CURLOPT_PROXY_SSL_VERIFYPEER(3)