annotate mupdf-source/thirdparty/curl/docs/libcurl/opts/CURLOPT_SSL_VERIFYHOST.3 @ 17:dd9cdb856310

Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .\"
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23 .TH CURLOPT_SSL_VERIFYHOST 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
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24 .SH NAME
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25 CURLOPT_SSL_VERIFYHOST \- verify the certificate's name against host
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26 .SH SYNOPSIS
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27 #include <curl/curl.h>
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29 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_VERIFYHOST, long verify);
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30 .SH DESCRIPTION
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31 Pass a long as parameter specifying what to \fIverify\fP.
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32
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33 This option determines whether libcurl verifies that the server cert is for
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34 the server it is known as.
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36 When negotiating TLS and SSL connections, the server sends a certificate
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37 indicating its identity.
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38
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39 When \fICURLOPT_SSL_VERIFYHOST(3)\fP is 2, that certificate must indicate that
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40 the server is the server to which you meant to connect, or the connection
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41 fails. Simply put, it means it has to have the same name in the certificate as
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42 is in the URL you operate against.
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43
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44 Curl considers the server the intended one when the Common Name field or a
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45 Subject Alternate Name field in the certificate matches the host name in the
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46 URL to which you told Curl to connect.
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47
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48 If \fIverify\fP value is set to 1:
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49
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50 In 7.28.0 and earlier: treated as a debug option of some sorts, not supported
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51 anymore due to frequently leading to programmer mistakes.
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52
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53 From 7.28.1 to 7.65.3: setting it to 1 made curl_easy_setopt() return an error
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54 and leaving the flag untouched.
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55
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56 From 7.66.0: treats 1 and 2 the same.
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57
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58 When the \fIverify\fP value is 0, the connection succeeds regardless of the
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59 names in the certificate. Use that ability with caution!
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60
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61 The default value for this option is 2.
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62
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63 This option controls checking the server's certificate's claimed identity.
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64 The server could be lying. To control lying, see
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65 \fICURLOPT_SSL_VERIFYPEER(3)\fP.
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66 .SH LIMITATIONS
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67 DarwinSSL: If \fIverify\fP value is 0, then SNI is also disabled. SNI is a TLS
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68 extension that sends the hostname to the server. The server may use that
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69 information to do such things as sending back a specific certificate for the
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70 hostname, or forwarding the request to a specific origin server. Some hostnames
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71 may be inaccessible if SNI is not sent.
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72
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73 NSS: If \fICURLOPT_SSL_VERIFYPEER(3)\fP is zero,
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74 \fICURLOPT_SSL_VERIFYHOST(3)\fP is also set to zero and cannot be overridden.
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75 .SH DEFAULT
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76 2
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77 .SH PROTOCOLS
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78 All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.
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79 .SH EXAMPLE
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80 .nf
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81 CURL *curl = curl_easy_init();
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82 if(curl) {
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83 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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84
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85 /* Set the default value: strict name check please */
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86 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L);
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87
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88 curl_easy_perform(curl);
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89 }
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90 .fi
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91 .SH AVAILABILITY
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92 If built TLS enabled.
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93 .SH RETURN VALUE
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94 Returns CURLE_OK if TLS is supported, and CURLE_UNKNOWN_OPTION if not.
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95
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96 If 1 is set as argument, \fICURLE_BAD_FUNCTION_ARGUMENT\fP is returned.
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97 .SH "SEE ALSO"
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
98 .BR CURLOPT_SSL_VERIFYPEER "(3), " CURLOPT_CAINFO "(3), "