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annotate doc/libervia-cli/ad-hoc.rst @ 3732:0fac164ff2d8

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tools (xml_tools): fix `widget_args` modification in `_dataFormField2XMLUIData`: in `textbox` widget, the first arg was modified with all values, lettings other ones unchanger, resulting in invalid number of arguments. This has been fixed by replacing all args with the new value.
author Goffi <goffi@goffi.org>
date Mon, 31 Jan 2022 18:35:52 +0100
parents 267e4987b58b
children
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1 =======================
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2 ad-hoc: Ad-Hoc commands
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3 =======================
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4
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5 Ad-Hoc commands is a generic mechanism of XMPP to control an entity. They can be used
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6 either by humans, or automated. Ad-Hoc commands can be used for administration (e.g. get
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7 list of connected users, send a service announcement, restart parts of the server), or
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8 execute about anything (e.g. control a physical robot with XMPP).
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9
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10 run
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11 ===
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12
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13 Run an ad-hoc command. You may specify the node to run as positional argument, or let it
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14 empty to list available commands.
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15
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16 By default the commands from your server are used, but with ``-j JID, --jid JID`` you can
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17 specify a different entity.
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18
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19 You can automatically execute commands by using ``-f KEY VALUE, --field KEY VALUE`` and
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20 ``-S, --submit`` as many time as needed. ``--field`` expect a ``KEY`` which is the name
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21 of the field to set. If you don't know which name to use, you can run the command to
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22 automatise a first time manually with ``--verbose, -v`` flag, this will display fields
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23 names when you have to fill them.
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24
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25 Once all fields of a page are specified, you may use ``-S, --submit`` to validate it, then
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26 if suitable use again ``--field`` to set fields of next page and ``--submit`` again, and
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27 so on as many times as you need.
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28
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29 Don't forget that you can use your shell substitution capabilities if necessary, for
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30 instance if you have a pre-registered announce to send.
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31
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32 examples
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33 --------
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34
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35 Get a list of available commands on your server to launch a command::
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36
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37 $ li ad-hoc run
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38
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39 If your server supports `XEP-0133`_ and you're an admin on it, you can send announcements
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40 to online users. This can be useful to notify an imminent maintenance of the server. Here
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41 we notify online users that the server will be shutdown in 30 min, using a shell
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42 substitution capabilities with a pre-registered message in the file
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43 ``~/announces/maintenance_30.txt``, then we submit it::
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44
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45 $ li ad-hoc run "http://jabber.org/protocol/admin#announce" -f subject "Maintenance in 30 min" -f announcement "$(<~/announces/maintenance_30.txt)" -S
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46
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47 Get your server uptime (if supported by your server)::
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48
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49 $ li ad-hoc run uptime
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50
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51 Run the commands available at the service with the jid ``someservice.example.org``::
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52
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53 $ li ad-hoc run -s someservice.example.org
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54
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55 Run you server commands with verbosity so you get the name of the fields that you can fill
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56 automatically later::
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57
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58 $ li ad-hoc run -v
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59
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60 .. _XEP-0133: https://xmpp.org/extensions/xep-0133.html
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61
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62 list
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63 ====
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64
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65 List ad-hoc commands available at a service.
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66
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67 examples
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68 --------
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69
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70 List ad-hoc commands available at your server::
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71
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72 $ li ad-hoc list
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73
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74 List ad-hoc commands available at a chat service::
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75
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76 $ li ad-hoc list -j conference.example.org
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77
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78 remote
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79 ======
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80
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81 Create a remote control from launched media players. Ad-hoc commands to control the media
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82 player will be added to your device, allowing anybody allowed (including yourself from an
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83 other device, e.g. a phone) to remotely do action like ``play``, ``pause``, etc.
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84
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85 To add a device, just use the name of the software (e.g. ``vlc``, ``smplayer``). You can
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86 specify who is allowed to control this media player with the following options:
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87
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88 ``-j [JIDS [JIDS ...]], --jids [JIDS [JIDS ...]]``
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89 jids of entities allowed to control the media player
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90
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91 ``g [GROUPS [GROUPS ...]], --groups [GROUPS [GROUPS ...]]``
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92 groups (from your roster) allowed to control you remote
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93
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94 ``--forbidden-groups [FORBIDDEN_GROUPS [FORBIDDEN_GROUPS ...]]``
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95 groups (from your roster) which are **NOT** allowed to control your media player
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96
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97 ``--forbidden-jids [FORBIDDEN_JIDS [FORBIDDEN_JIDS ...]]``
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98 jids of entities which are **NOT** allowed to control your media player
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99
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100 If you want the commands to run repeatedly (in opposition of stopping after first action
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101 is sent), you may use the ``-l, --loop`` option. Most of time you'll want to use it.
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102
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103 .. note::
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104
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105 Libervia already creates automatically a remote control if it finds a media player. This
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106 manual way to create a remote control predate the automatic remote control, and is
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107 currently more flexible in that you can specify who can access the remote control
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108 (automatic remote control is only accessible by the jid of the profile).
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109
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110 examples
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111 --------
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112
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113 Create a remote control for a running VLC instance::
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114
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115 $ li ad-hoc remote vlc -l
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116
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117 Create a remote control for a running SMPlayer instance, and allowing anybody from your
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118 ``housemates`` group to use it::
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119
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120 $ li ad-hoc remote smplayer -g housemates -l