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annotate xml/en/docs/http/ngx_http_secure_link_module.xml @ 617:368a449e85b8

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Expanded documentation of what various parameters of the "listen" directive related to socket options do. While here, documented the fact that accept filters also work on NetBSD.
author Ruslan Ermilov <ru@nginx.com>
date Thu, 02 Aug 2012 13:24:07 +0000
parents 764fbac1b8b4
children 42750c1b8d1b
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348
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1 <?xml version="1.0"?>
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2
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3 <!--
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4 Copyright (C) Igor Sysoev
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5 Copyright (C) Nginx, Inc.
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6 -->
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7
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
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9
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10 <module name="Module ngx_http_secure_link_module"
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11 link="/en/docs/http/ngx_http_secure_link_module.html"
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12 lang="en"
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13 rev="1">
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14
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15 <section id="summary">
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16
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17 <para>
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18 The <literal>ngx_http_secure_link_module</literal> module (0.7.18+) checks
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19 the validity of the requested link.
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20 </para>
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21
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22 <para>
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23 This module is not built by default, it should be enabled with the
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24 <literal>--with-http_secure_link_module</literal>
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25 configuration parameter.
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26 </para>
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27
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28 </section>
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29
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30
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31 <section id="example" name="Example Configuration">
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32
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33 <para>
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34 <example>
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35 location /p/ {
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36 secure_link_secret some_secret_word;
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37
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38 if ($secure_link = "") {
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39 return 403;
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40 }
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41 }
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42 </example>
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43 </para>
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44
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45 </section>
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46
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47
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48 <section id="directives" name="Directives">
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49
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50 <directive name="secure_link_secret">
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51 <syntax><value>word</value></syntax>
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52 <default/>
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53 <context>location</context>
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54
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55 <para>
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56 Defines a secret <value>word</value> used to check the validity of the link.
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57 The full URL of the protected link looks as follows:
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58 <example>
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59 /prefix/<value>hash</value>/<value>link</value>
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60 </example>
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61 where <value>hash</value> is computed as
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62 <example>
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63 md5(link, secret_word);
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64 </example>
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65 </para>
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66
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67 <para>
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68 A prefix is an arbitrary string not including a slash.
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69 </para>
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70
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71 </directive>
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72
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73 </section>
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74
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75
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76 <section id="variables" name="Embedded Variables">
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77
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78 <para>
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79 <list type="tag">
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80
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81 <tag-name><var>$secure_link</var></tag-name>
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82 <tag-desc>
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83 equals to the link extracted from the full URL.
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84 If hash is incorrect, this variable is set to an empty string.
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85 </tag-desc>
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86
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87 </list>
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88 </para>
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89
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90 </section>
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91
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92 </module>