Annotation of embedaddon/curl/docs/libcurl/opts/CURLOPT_CERTINFO.3, revision 1.1.1.1
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23: .TH CURLOPT_CERTINFO 3 "January 29, 2019" "libcurl 7.70.0" "curl_easy_setopt options"
24:
25: .SH NAME
26: CURLOPT_CERTINFO \- request SSL certificate information
27: .SH SYNOPSIS
28: #include <curl/curl.h>
29:
30: CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CERTINFO, long certinfo);
31: .SH DESCRIPTION
32: Pass a long set to 1 to enable libcurl's certificate chain info gatherer. With
33: this enabled, libcurl will extract lots of information and data about the
34: certificates in the certificate chain used in the SSL connection. This data
35: may then be retrieved after a transfer using \fIcurl_easy_getinfo(3)\fP and
36: its option \fICURLINFO_CERTINFO(3)\fP.
37: .SH DEFAULT
38: 0
39: .SH PROTOCOLS
40: All TLS-based
41: .SH EXAMPLE
42: .nf
43: curl = curl_easy_init();
44: if(curl) {
45: curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
46:
47: /* connect to any HTTPS site, trusted or not */
48: curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
49: curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
50:
51: curl_easy_setopt(curl, CURLOPT_CERTINFO, 1L);
52:
53: res = curl_easy_perform(curl);
54:
55: if (!res) {
56: struct curl_certinfo *ci;
57: res = curl_easy_getinfo(curl, CURLINFO_CERTINFO, &ci);
58:
59: if (!res) {
60: printf("%d certs!\\n", ci->num_of_certs);
61:
62: for(i = 0; i < ci->num_of_certs; i++) {
63: struct curl_slist *slist;
64:
65: for(slist = ci->certinfo[i]; slist; slist = slist->next)
66: printf("%s\\n", slist->data);
67: }
68: }
69: }
70: curl_easy_cleanup(curl);
71: }
72: .fi
73: .SH AVAILABILITY
74: This option is supported by the OpenSSL, GnuTLS, Schannel, NSS and GSKit
75: backends.
76: .SH RETURN VALUE
77: Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
78: .SH "SEE ALSO"
79: .BR CURLOPT_CAINFO "(3), " CURLOPT_SSL_VERIFYPEER "(3), "
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