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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 29 Apr 2021 12:41:31 +0200
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1 .. _serve-folders:
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4 Sample Serve Folders plugin
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5 ===========================
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7 This **official** plugin enables Orthanc to serve additional folders
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8 from the filesystem using its embedded Web server. This plugin is
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9 extremely useful when creating new Web applications on the top of the
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10 REST API of Orthanc, as it allows to fulfill the :ref:`same-origin
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11 policy <same-origin>` without setting up a reverse proxy.
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13 The source code of this sample plugin is `available in the source
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14 distribution of Orthanc
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15 <https://hg.orthanc-server.com/orthanc/file/default/OrthancServer/Plugins/Samples/ServeFolders/>`__
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16 (GPLv3+ license).
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19 Basic usage
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20 -----------
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22 1. First, generate the :ref:`default configuration of Orthanc <configuration>`.
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23 2. Then, modify the ``Plugins`` option to point to the folder containing
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24 the shared library of the plugin.
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25 3. Finally, create a section ``ServeFolders`` in the configuration file to
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26 specify which folder you want to serve, and at which URI.
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28 .. highlight:: json
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30 For instance, the following excerpt would load the plugins from the
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31 working directory, then would map the content of the folder
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32 ``/home/jodogne/WWW/fosdem`` as URI "http://localhost:8042/fosdem"::
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33
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34 {
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35 [...]
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36 "Plugins" : [
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37 "."
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38 ],
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39 "ServeFolders" : {
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40 "/fosdem" : "/home/jodogne/WWW/fosdem"
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41 }
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42 }
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45 Advanced usage
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46 --------------
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47
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48 Starting with Orthanc 1.2.0, the Serve Folders plugin features some
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49 more advanced configuration options, besides simply the list of
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50 folders to be served:
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51
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52 * The **MIME types** associated with the file extensions can be
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53 configured through the ``Extensions`` option. By default, the most
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54 common file extensions for Web applications such as ``.html``,
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55 ``.js`` and ``.css`` are defined.
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56 * The HTTP client can be asked to enable/disable its **caching
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57 mechanism** with the ``AllowCache`` option. By default, this option
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58 is set ``false`` (request no caching), as the most common use for
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59 this plugin consists in supporting the development of Web
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60 applications (with which caching would interfere). Note that this
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61 option is only informative: The client might choose to ignore it.
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62 * The plugin will automatically generate an `HTTP entity tag
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63 <https://en.wikipedia.org/wiki/HTTP_ETag>`__ (**ETag**) for each
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64 served resource, if the ``GenerateETag`` option is set to ``true``
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65 (the default). The ETag is computed as the MD5 of the resource and
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66 acts as a fingerprint.
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67
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68 If one of these advanced options is used, the list of served folders
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69 must be moved to a ``Folders`` sub-option. Here is an example of such
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70 an advanced configuration::
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72 {
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73 [...]
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74 "Plugins" : [
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75 "."
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76 ],
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77 "ServeFolders" : {
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78 "AllowCache" : false,
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79 "GenerateETag" : true,
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80 "Extensions" : {
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81 ".mp4" : "video/mp4"
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82 },
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83 "Folders" : {
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84 "/fosdem" : "/home/jodogne/WWW"
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85 }
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86 }
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87 }