e3fe020089
Remove the PROTOCOLS section from the source files completely and instead generate them based on the header data in the curldown files. It also generates TLS backend information for options marked for TLS as protocol. Closes #13175
92 lines
1.9 KiB
Markdown
92 lines
1.9 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_CERTINFO
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_CAINFO (3)
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- CURLINFO_CAPATH (3)
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- CURLINFO_CERTINFO (3)
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- CURLOPT_CAINFO (3)
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- CURLOPT_SSL_VERIFYPEER (3)
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Protocol:
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- TLS
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TLS-backend:
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- OpenSSL
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- GnuTLS
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- Schannel
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- Secure Transport
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---
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# NAME
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CURLOPT_CERTINFO - request SSL certificate information
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CERTINFO, long certinfo);
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~~~
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# DESCRIPTION
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Pass a long set to 1 to enable libcurl's certificate chain info gatherer. With
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this enabled, libcurl extracts lots of information and data about the
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certificates in the certificate chain used in the SSL connection. This data
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may then be retrieved after a transfer using curl_easy_getinfo(3) and
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its option CURLINFO_CERTINFO(3).
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# DEFAULT
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0
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
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/* connect to any HTTPS site, trusted or not */
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
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curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
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curl_easy_setopt(curl, CURLOPT_CERTINFO, 1L);
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res = curl_easy_perform(curl);
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if(!res) {
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struct curl_certinfo *ci;
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res = curl_easy_getinfo(curl, CURLINFO_CERTINFO, &ci);
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if(!res) {
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int i;
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printf("%d certs!\n", ci->num_of_certs);
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for(i = 0; i < ci->num_of_certs; i++) {
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struct curl_slist *slist;
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for(slist = ci->certinfo[i]; slist; slist = slist->next)
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printf("%s\n", slist->data);
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}
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}
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}
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Schannel support added in 7.50.0. Secure Transport support added in 7.79.0.
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# RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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