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comparison mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLINFO_CERTINFO.3 @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1 .\" **************************************************************************
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23 .TH CURLINFO_CERTINFO 3 "12 Sep 2015" "libcurl 7.44.0" "curl_easy_getinfo options"
24 .SH NAME
25 CURLINFO_CERTINFO \- get the TLS certificate chain
26 .SH SYNOPSIS
27 #include <curl/curl.h>
28
29 CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_CERTINFO,
30 struct curl_certinfo *chainp);
31 .SH DESCRIPTION
32 Pass a pointer to a 'struct curl_certinfo *' and you'll get it set to point to
33 struct that holds a number of linked lists with info about the certificate
34 chain, assuming you had \fICURLOPT_CERTINFO(3)\fP enabled when the request was
35 made. The struct reports how many certs it found and then you can extract info
36 for each of those certs by following the linked lists. The info chain is
37 provided in a series of data in the format "name:content" where the content is
38 for the specific named data. See also the certinfo.c example.
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 only working in libcurl built with OpenSSL, NSS, Schannel or
75 GSKit support. Schannel support added in 7.50.0
76
77 Added in 7.19.1
78 .SH RETURN VALUE
79 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
80 .SH "SEE ALSO"
81 .BR curl_easy_getinfo "(3), " curl_easy_setopt "(3), "