Annotation of embedaddon/curl/docs/libcurl/opts/CURLOPT_PROXY_CRLFILE.3, revision 1.1.1.1
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23: .TH CURLOPT_PROXY_CRLFILE 3 "March 23, 2020" "libcurl 7.70.0" "curl_easy_setopt options"
24:
25: .SH NAME
26: CURLOPT_PROXY_CRLFILE \- specify a proxy Certificate Revocation List file
27: .SH SYNOPSIS
28: #include <curl/curl.h>
29:
30: CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_CRLFILE, char *file);
31: .SH DESCRIPTION
32: This option is for connecting to an HTTPS proxy, not an HTTPS server.
33:
34: Pass a char * to a zero terminated string naming a \fIfile\fP with the
35: concatenation of CRL (in PEM format) to use in the certificate validation that
36: occurs during the SSL exchange.
37:
38: When curl is built to use NSS or GnuTLS, there is no way to influence the use
39: of CRL passed to help in the verification process. When libcurl is built with
40: OpenSSL support, X509_V_FLAG_CRL_CHECK and X509_V_FLAG_CRL_CHECK_ALL are both
41: set, requiring CRL check against all the elements of the certificate chain if
42: a CRL file is passed.
43:
44: This option makes sense only when used in combination with the
45: \fICURLOPT_PROXY_SSL_VERIFYPEER(3)\fP option.
46:
47: A specific error code (\fICURLE_SSL_CRL_BADFILE\fP) is defined with the
48: option. It is returned when the SSL exchange fails because the CRL file cannot
49: be loaded. A failure in certificate verification due to a revocation
50: information found in the CRL does not trigger this specific error.
51:
52: The application does not have to keep the string around after setting this
53: option.
54: .SH DEFAULT
55: NULL
56: .SH PROTOCOLS
57: Used with HTTPS proxy.
58: .SH EXAMPLE
59: .nf
60: CURL *curl = curl_easy_init();
61: if(curl) {
62: curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
63: curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost:80");
64: curl_easy_setopt(curl, CURLOPT_PROXY_CRLFILE, "/etc/certs/crl.pem");
65: ret = curl_easy_perform(curl);
66: curl_easy_cleanup(curl);
67: }
68: .fi
69: .SH AVAILABILITY
70: Added in 7.52.0
71: .SH RETURN VALUE
72: Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
73: CURLE_OUT_OF_MEMORY if there was insufficient heap space.
74: .SH "SEE ALSO"
75: .BR CURLOPT_PROXY_SSL_VERIFYPEER "(3), " CURLOPT_PROXY_SSL_VERIFYHOST "(3), "
76: .BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_SSL_VERIFYHOST "(3), "
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