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Today's Topics:
1. Re: mpjpeg fails on wansview 1080p (John Baker)
2. Re: How the documentation on the Motion wiki is working
(Joseph Heenan)
----------------------------------------------------------------------
Message: 1
Date: Sun, 07 Aug 2016 08:25:06 +0100
From: John Baker <[email protected]>
Subject: Re: [Motion-user] mpjpeg fails on wansview 1080p
To: [email protected]
Message-ID:
<1470554706.1113147.688186593.00ef8...@webmail.messagingengine.com>
Content-Type: text/plain
Totally agree.
(1) is easy.
(2) Coming from a Python/Java background, I would not expect anyone to
be writing HTTP code in 2016 (or 2010). Rip it all out and replace it
with a good library; I guess whatever is used by curl or wget.
I think one of your objectives should be to remove as much home grown
code as possible, whether config file reading or HTTP.
On Sun, Aug 7, 2016, at 08:08 AM, tosiara wrote:
> So here we have two issues:
> 1. motion should better handle 401 or any non-200 http status and show
> user
> friendly error
> 2. digest auth support
>
> The first would probably be an easy code change
> But the second would be a challenge. We can implement digest auth. Or.
> There was a discussion already to replace all the manual http code by
> some
> web library that provides better support and better maintained. But that
> requires also quite a lot of efforts to change the code
>
> On Sun, Aug 7, 2016 at 9:25 AM, John Baker <[email protected]> wrote:
>
> > So being more awake this morning, I now spot the problem. The camera
> > wishes to use HTTP digest authentication, which I guess motion doesn't
> > support (another on the todo list Mr Dave / Joseph ?:).
> >
> > http://stackoverflow.com/questions/2384230/what-is-digest-authentication
> >
> > Example:
> >
> > > HEAD /mjpeg/stream.cgi?chn=0 HTTP/1.1
> > > Host: 192.168.0.102
> > > User-Agent: curl/7.49.1
> > > Accept: */*
> > >
> > < HTTP/1.1 401 Unauthorized
> > < WWW-Authenticate: Digest realm="IPCamera Login",
> > nonce="f35b3a998c0b964d21d99da3f8880f14", qop="auth"
> >
> > > HEAD /mjpeg/stream.cgi?chn=0 HTTP/1.1
> > > Host: 192.168.0.102
> > > Authorization: Digest username="visitor", realm="IPCamera Login", nonce="
> > f35b3a998c0b964d21d99da3f8880f14", uri="/mjpeg/stream.cgi?chn=0", cnonce="
> > MWY1N2M3NmUzMjNlODIxM2ZjMzAxYTcyNTIzMjA0MTY=", nc=00000001, qop=auth,
> > response="3bb6cbc93342432432421104ebeed5c3a"
> > > User-Agent: curl/7.49.1
> > > Accept: */*
> > >
> > < HTTP/1.1 200 OK
> >
> >
> > ------------------------------------------------------------
> > ------------------
> > _______________________________________________
> > Motion-user mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/motion-user
> > http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome
> >
> ------------------------------------------------------------------------------
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> http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome
------------------------------
Message: 2
Date: Sun, 7 Aug 2016 09:33:12 +0100
From: Joseph Heenan <[email protected]>
Subject: Re: [Motion-user] How the documentation on the Motion wiki is
working
To: Motion discussion list <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Hi Kenneth,
Thanks for the info!
I?m happy to setup an external backup - it sounds like the easiest way might be
if you could do a nightly tgz and then I can grab that from a http url?
Thanks
Joseph
> On 6 Aug 2016, at 13:30, Kenneth Lavrsen <[email protected]> wrote:
>
> Oh forgot backup
>
> Foswiki has all its files as plan text files. So it is easy to back-up in
> many different ways.
>
> A simple cron job can tgz the whole Motion guide in seconds either shoot it
> off or place it where it can be picked up as a simple html download. And the
> space required is none. The text zipped is kilobytes in size. Only the images
> take a little space. It is nothing.
> And Foswiki itself is open source and can be downloaded and installed on any
> Linux box. All plugins used are open source from the Foswiki site.
>
> I take daily backups myself but they are inhouse. If my house burns...
>
> Then it smells like pork roast when my body burns and the data is lost
> Kenneth
>
>
> On 06 Aug 2016, at 11:31, Joseph Heenan <[email protected]
> <mailto:[email protected]>> wrote:
>
>> Hi Kenneth,
>>
>> Many thanks for the detailed explanation. I have read it and it makes sense
>> to me, though I have yet to try it. (I?m no stranger to foswiki?s macros.) I
>> guess we may want to document some of this process in a wiki page somewhere.
>>
>> I have two questions:
>>
>> 1) Should the wiki reflect the current release version or the latest
>> development version? (I hope the latter is the answer, as otherwise it makes
>> for a lot of work at release time, and there are a lot of advantages to the
>> release process being lightweight.)
>>
>> 2) Would it be a good idea to setup an offsite backup of the wiki? I?m
>> conscious that if it is an ingrained part of our development process, we
>> should make sure we can easily reproduce it if the worst happens. (I can
>> donate server space for an offsite backup to be stored, but I presume the
>> only good way to create a backup is that it is pushed from your server.)
>>
>> Thanks
>>
>> Joseph
>>
>>
>>> On 5 Aug 2016, at 22:21, Kenneth Lavrsen <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>> I forgot to write
>>>
>>> And now the man page
>>>
>>> In front of the section that starts with "it is a bit hidden"
>>>
>>> On 05 Aug 2016, at 23:07, Kenneth Lavrsen <[email protected]
>>> <mailto:[email protected]>> wrote:
>>>
>>>> Hi all
>>>>
>>>> Let me introduce what is under the hood of the project documentation of
>>>> Motion
>>>>
>>>> Ignore all the bug report, feature request, patch features. They are awful
>>>> and could be implemented much better but there is no point that I try to
>>>> do that because Github offers the same out of the box in a familiar and
>>>> superiour way.
>>>>
>>>> But on the documentation side the Foswiki features are pretty cool and not
>>>> at all supported by Github or Sourceforge
>>>>
>>>> You probably all know the Motion guide.
>>>>
>>>> You go to http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome>. You click in the
>>>> Motion Guide and you land
>>>> onhttp://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuide
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuide>
>>>> From there you have several choices.
>>>>
>>>> The first is the Installation. And if you ever try to edit that page it
>>>> has a short text and then followed by
>>>>
>>>> %TOC%
>>>>
>>>> %INCLUDE{"MotionOverview"}%
>>>> %INCLUDE{"KnownProblems"}%
>>>> %INCLUDE{"InstallOverview"}%
>>>> %INCLUDE{"PrepareInstall"}%
>>>> %INCLUDE{"ConfigureScript"}%
>>>> %INCLUDE{"MakeInstall"}%
>>>> %INCLUDE{"UpgradingFromOlderVersion"}%
>>>> %INCLUDE{"ErrorLogging"}%
>>>>
>>>> All the %SOMETHING% are macros. %TOC% is a table of content. And
>>>> %INCLUDE.... simply includes pages. So all it is is a modular approach so
>>>> you do not have to sit and edit an evil long page. So to edit the
>>>> documentation you go to the sub page and start typing.
>>>>
>>>> The markup language is simple.
>>>>
>>>> ---+ Headline level 1
>>>>
>>>> ---++ Headline level 2
>>>>
>>>> ---+++ Headline level 3
>>>>
>>>> Some *bold* text.
>>>>
>>>> WikiWords like WoW, HitMeGood etc automatically link to a page with that
>>>> name. WikiWord starts with upper case followed by lower case followed by
>>>> uppercase and you have a WikiWord.
>>>>
>>>> WikiWord
>>>>
>>>> Notawikiword (not capitals in the middle)
>>>>
>>>> notAwikiWord (does not start with a capital)
>>>>
>>>> Wiki2Word is a wikiword because number count as lower case.
>>>>
>>>> ALSoaWikiWord2Go - Also a wiki word. The minute the parser saw ALSoaW it
>>>> because a wiki word.
>>>>
>>>> If the page exists it links to it. If the page does not exist it suggest
>>>> that you create it.
>>>>
>>>> !IDoNotWantThisAsWikiWord is not a wikiword. The ! cancels the
>>>> wikiword-ness but the ! is invisible.
>>>>
>>>> There are two edit modes. Normal Edit is a WYSIWYG editor which is OK.
>>>> Edit Wikitext is for us geeks that want to control what we do. If you edit
>>>> existing text you quickly see how it works
>>>>
>>>> Tables use the syntax
>>>>
>>>> | *Heading text* | *Second Heading* |
>>>> | text here | more cell text here |
>>>> | hello | here I am |
>>>>
>>>> Very simple.
>>>>
>>>> Back to the documentation
>>>>
>>>> Getting It Running is also a bunch of includes. Some are pretty smart and
>>>> intelligent.
>>>>
>>>> Like the table of options. Noone had written that table.
>>>>
>>>> The table gets generated in the included page ConfigFileOptions (
>>>> http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigFileOptions
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigFileOptions> )
>>>>
>>>> It has code that looks like this
>>>>
>>>> %TABLE{valign="top" headeralign="left" columnwidths="170,240"}%
>>>> | *Option* | *Range/Values<br />Default* | *Description* |
>>>> %SEARCH{ "Group != 'Obsolete'" topic="ConfigOption*" casesensitive="on"
>>>> type="query" nosearch="on" nototal="on" order="formfield(Option)"
>>>> excludetopic="ConfigOptionTemplate, ConfigOptionForm" format="|
>>>> [[$topic][$formfield(Option)]]| Values: $formfield(Range)<br />Default:
>>>> $formfield(Default) | $formfield(Description) |"}%
>>>>
>>>> What is going on?
>>>>
>>>> First line is a Macro %TABLE... which defines how the table looks like.
>>>> Mostly allignment of text and columnwidths
>>>>
>>>> Then | *Option* | *Range/Values<br />Default* | *Description* |
>>>>
>>>> Which is he header of the table. Notice how you can use HTML in the
>>>> markup.
>>>>
>>>> And then the smart feature - the formatted SEARCH.
>>>>
>>>> The SEARCH looks up all pages that start with ConfigOption. Note the
>>>> topic="ConfigOption*" where * is a wild card.
>>>>
>>>> And it exclude the topics where Group != 'Obsolete'
>>>>
>>>> What is this? Is it a database? Well almost. I will get back to that.
>>>>
>>>> There are some more options for the SEARCH that controls how it presents
>>>> data. In this case it basically means "shut up with all your noise" and
>>>> finally there is the format parameter which defines how the pages (topics)
>>>> are presented.
>>>>
>>>> Each found topic becomes a table row.
>>>>
>>>> format="| [[$topic][$formfield(Option)]]| Values: $formfield(Range)<br
>>>> />Default: $formfield(Default) | $formfield(Description) |"}%
>>>>
>>>> So the format is a row where
>>>>
>>>> First column is a link to the page that defines the parameter.
>>>>
>>>> Second column is a combination of the field values for Range and Default
>>>> values.
>>>>
>>>> Third column is the description
>>>>
>>>> So each motion.conf option has its own wikipage. The naming convention is
>>>> ConfigOptionOptionName where OptionName is a WikiWord version of the
>>>> option. Simple. It does not have to be but that is how I defined it and it
>>>> makes it easy to find the right page
>>>>
>>>> Now to the config option pages.
>>>>
>>>> Let us take an example. The option "height" from motion conf is defined
>>>> onhttp://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionHeight
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionHeight>. So the
>>>> topic (Pages are called topics in Foswiki - horrible I know) is
>>>> ConfigOptionHeight.
>>>>
>>>> When you look at it you see a plain descriptive text
>>>>
>>>> And below a table which is a Form. The structure of this form is defined
>>>> in ConfigOptionForm which looks like
>>>>
>>>>
>>>>
>>>> Form Topic for motion.conf options
>>>>
>>>> Name:
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionForm?sortcol=0;table=1;up=0#sorted_table>
>>>> Type:
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionForm?sortcol=1;table=1;up=0#sorted_table>
>>>> Size:
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionForm?sortcol=2;table=1;up=0#sorted_table>
>>>> Values:
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionForm?sortcol=3;table=1;up=0#sorted_table>
>>>> Tooltip message:
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigOptionForm?sortcol=4;table=1;up=0#sorted_table>
>>>> Option text 50 Option Name - always lower case and
>>>> with underscore between words
>>>> Type select 1 Boolean, Integer, String, Discrete Strings
>>>> Date type of option
>>>> Range text 70 min: x, max: y Range for integers, or list of
>>>> allowed strings/values
>>>> Default text 50 Default value when option is commented
>>>> out
>>>> Description textarea 80x4 Short Description
>>>> Group select 1 Runtime Options, Capture Device, Round Robin,
>>>> Motion Detection Settings, Image File Output, Movie File Output,
>>>> Snapshots, Text Display, Target Directories and Filenames, Live Webcam
>>>> Server, HTML Based Control, Tracking, External Commands, Common Options
>>>> For Database, Database Options For MySQL, Database Options For PostgreSQL,
>>>> Video Loopback Device, Debugging for Programmers, Thread, Obsolete
>>>> Option group from motion.conf
>>>>
>>>> So in reality it is like a primitive database where each option is a
>>>> record in a database and the database fields are
>>>>
>>>> Option: The name of the option
>>>> Type: One of the values Boolean, Integer, String, Discrete Strings
>>>> Range: is a plain text field where you define the range of valid values if
>>>> there is a range
>>>> Default: is the default value
>>>> Group: Is one of the values - Runtime Options, Capture Device, Round
>>>> Robin, Motion Detection Settings, Image File Output, Movie File Output,
>>>> Snapshots, Text Display, Target Directories and Filenames, Live Webcam
>>>> Server, HTML Based Control, Tracking, External Commands, Common Options
>>>> For Database, Database Options For MySQL, Database Options For PostgreSQL,
>>>> Video Loopback Device, Debugging for Programmers, Thread, Obsolete
>>>>
>>>> The group is used to be able to autogenerate the documentation and present
>>>> the different options grouped together. If you need a new group you edit
>>>> the ConfigOptionForm topic and the new value will be in the pick list
>>>>
>>>>
>>>> To create a new ConfigOptionXXXXX topic you create it first and then add
>>>> the ConfigOptionForm to the topic and it then gets the nice structured
>>>> database like fields to it. Very simple once you get the idea.
>>>>
>>>> Once you have the the config options defined as one topic for each option
>>>> only fantasy limits the ways you can present the data using the SEARCH
>>>> macro.
>>>>
>>>> And this is what I do in the Motion Guide. In
>>>> http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigFileOptions
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/ConfigFileOptions> it
>>>> creates the table of all config options.
>>>>
>>>> Back to the Motion Guide. Now that you know what is going on let us look
>>>> athttp://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideBasicFeatures
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideBasicFeatures>.
>>>> Again just a bunch of INCLUDEs.
>>>> And inside each included topic I have a plain text introduction. And then
>>>> followed by a SEARCH that presents the the options based on a section
>>>> criteria based on Group value. I can see I need to simplify the SEARCHes a
>>>> little because there is a newer query syntax available now in Foswiki that
>>>> works a bit like SQL. I will update all those.
>>>>
>>>> But the principle is the same all over. The documention is a mix of
>>>> plaintext and reuse of the ConfigOptionXXXX topics.
>>>>
>>>> http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideAlphabeticalOptionReferenceManual
>>>>
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideAlphabeticalOptionReferenceManual>
>>>> simply lists ALL the config options in one big document.
>>>>
>>>
>>> And now to the man page
>>>
>>>> It is a bit hidden. It is under
>>>> http://www.lavrsen.dk/foswiki/bin/view/Motion/MiscellaneousInformation
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MiscellaneousInformation>
>>>> and there you
>>>> findhttp://www.lavrsen.dk/foswiki/bin/view/Motion/MotionOptionsAlphabeticalManpage
>>>>
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionOptionsAlphabeticalManpage>
>>>>
>>>> And what is under the hood of that?
>>>>
>>>> http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionOptionsAlphabeticalManpage?raw=on
>>>>
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionOptionsAlphabeticalManpage?raw=on>
>>>>
>>>> First some plain text Main page intro. Nothing fancy and all within <pre>
>>>> and </pre> tags that makes Foswiki show the text as raw code but still
>>>> interprets macros.
>>>>
>>>> %STARTATTACH...% and %ENDATTACH...% enclose the text we want saved in a
>>>> man page file.
>>>> Each time you edit and save the page a new man page is created and
>>>> attached to the topic. Yes you can also attach files to the wikipages. In
>>>> this case a plugin does it automatically each time you save.
>>>>
>>>> Inside the pre tags you find a SEARCH macro.
>>>>
>>>> %SEARCH{ "Group != 'Obsolete'" type="query" topic="ConfigOption*"
>>>> casesensitive="on" nosearch="on" nototal="on" order="formfield(Option)"
>>>> excludetopic="ConfigOptionTemplate, ConfigOptionForm,
>>>> ConfigOptionFfmpegFilename, ConfigOptionMinimumGap" format=".TP$n().B
>>>> $formfield(Option)
>>>> $percntCALC{\"$LOWER($formfield(Type))\"}$percnt$n()Values:
>>>> $formfield(Range) / Default:
>>>> $formfield(Default)$n().br$n()$formfield(Description)"}%
>>>>
>>>> It again find all the options and present them neatly in a format that
>>>> makes sense in a man page.
>>>>
>>>> In this case it presents all options except the ones that are in marked as
>>>> Obsolete in the Group field. So now you know how to hide the options that
>>>> are removed in the new versions. Change the group field to Obsolete and it
>>>> is hidden from all views but can be presented on a list of obsolete
>>>> options.
>>>>
>>>> The Macros in Foswiki are parsed top to down, left to right, inside out.
>>>>
>>>> So when you want to put macros inside the format string of the SEARCH you
>>>> have to hide the macros (inside out) until the search is run. The $percnt
>>>> or $percent is the way you delay the macro expansion inside SEARCH.
>>>>
>>>> So first the SEARCH finds all the option topics, then creates the table
>>>> rows, replaceing all the $percnt with "%" and when the SEARCH is complete
>>>> the the now visible macros get parsed. In this case the CALC macro which
>>>> is a swiss army knife of small functions. Here is changes text to lower
>>>> case.
>>>>
>>>> I do not expect you guys to understand all this. But you can easily edit
>>>> the pages that are already there.
>>>> With a little help you can create new config option topics and they then
>>>> automatically appear in the Motion guide in the right chapter based on the
>>>> Group field.
>>>> And if you remove an option you change it to the obsolete group.
>>>>
>>>> When you want to generate a new man page - just look
>>>> uphttp://www.lavrsen.dk/foswiki/bin/view/Motion/MotionOptionsAlphabeticalManpage
>>>>
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionOptionsAlphabeticalManpage>.
>>>> Edit the page and save it. And then download the updated "motion.1"
>>>> attachment. Easy, right?
>>>>
>>>> You edit one config option file one place. And all the many versions of
>>>> the options tables, the reference manual, the detailed manual, the man
>>>> pages - everything is up to date. THAT is WHY the Motion guide is on
>>>> Foswiki. It takes a little effort to get the head around it but then it is
>>>> easy to maintain
>>>>
>>>> And I will gladly do that. I am using Foswiki at work every day. I just
>>>> need you guys to ping me when you need to update something that is not
>>>> just a simple edit of an existing page
>>>>
>>>>
>>>> The motion guide which is included when you build Motion (at least from
>>>> the old SVN version) simply downloads the HTML
>>>> fromhttp://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideOneLargeDocument
>>>>
>>>> <http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideOneLargeDocument>
>>>>
>>>> And it does it in a mode where all the menus and shit is removed and you
>>>> just get a plain HTML file. You can see some grumpy users that added a
>>>> note that the file is out of date and that people have to read the code to
>>>> find out how it works. That is so wrong and not easy if you do not read C
>>>> code.
>>>>
>>>> Long email. But the few of you that are interested should not understand
>>>> how it works. I will update the SEARCH syntax used to query search instead
>>>> of the old regex searches used which are a bit dodgy to read.
>>>>
>>>> Kenneth
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
>>>> _______________________________________________
>>>> Motion-user mailing list
>>>> [email protected]
>>>> <mailto:[email protected]>
>>>> https://lists.sourceforge.net/lists/listinfo/motion-user
>>>> <https://lists.sourceforge.net/lists/listinfo/motion-user>
>>>> http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome
>>>> <http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome>
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> Motion-user mailing list
>>> [email protected] <mailto:[email protected]>
>>> https://lists.sourceforge.net/lists/listinfo/motion-user
>>> <https://lists.sourceforge.net/lists/listinfo/motion-user>
>>> http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome
>>> <http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome>
>> ------------------------------------------------------------------------------
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>> Motion-user mailing list
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>> https://lists.sourceforge.net/lists/listinfo/motion-user
>> <https://lists.sourceforge.net/lists/listinfo/motion-user>
>> http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome
>> <http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome>
> ------------------------------------------------------------------------------
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