The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Scripting’ Category

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Looking for maintainer(s) for fritzcap (Python project that captures calls from a Fritz!Box)

Posted by jpluimers on 2023/07/12

Given my health uncertainty, I am looking for maintainers for the fritzcap project (it captures calls from a Fritz!Box modem/router and is written in Python).

History

The fritzcap project was originally started in2007 by [Wayback/Archive] spongebob | IP Phone Forum, first as a binary fritzcap.exe Windows executable (see his first post at [Wayback/Archive] FritzBox: Tool für Etherreal Trace und Audiodaten-Extraktion | IP Phone Forum). In 2010 it became an open source Python project at [Wayback/Archive] Google Code Archive – Long-term storage for Google Code Project Hosting.

Read the rest of this entry »

Posted in About, Audio, Cloud, Communications Development, Containers, Development, Docker, ffmpeg, Fritz!, Fritz!Box, fritzcap, Hardware, HTTP, Infrastructure, Internet protocol suite, Media, Network-and-equipment, Personal, Power User, Python, Scripting, Software Development, TCP | Leave a Comment »

Figuring out the open network connections for processes ran by python

Posted by jpluimers on 2023/07/11

TL;DR:

pidof python | tr " " "\n" | xargs -r -n 1 lsof -i -a -e /run/user/1001/gvfs -p

Breakdown:

  • Getting the process IDs of any python process using pidof (most of my systems do not have pgrep installed):
    # pidof python
26128 12583
  • Given the above list is space separated, and xargs prefers line separated, lets replace spaces with newlines (I showed this before in Source: firewalld: show interfaces with their zone details and show zones in use):
    # pidof python | tr " " "\n"
26128
12583
  • By default, xargs squashes all input on one line:
    # pidof python | tr " " "\n" | xargs echo
26128 12583
  • To work around that, you can either use the -L 1 or -n 1 argument to keep them on separate lines:
    # pidof python | tr " " "\n" | xargs -L 1 echo
26128
12583
# pidof python | tr " " "\n" | xargs -n 1 echo
26128
12583
  • Now lsof can not only show open files, but also IP sockets (-i), and *only* those (-a), for a specific process ID (-p #). So by having the -p as last argument, xargs will append the process ID after it:
    # pidof python | tr " " "\n" | xargs -n 1 lsof -i -a -p
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1001/gvfs
      Output information may be incomplete.
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1001/gvfs
      Output information may be incomplete.
COMMAND   PID    USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
python  12583 jeroenp    7u  IPv4 8347396      0t0  TCP 192.168.124.38:54576->192.168.124.23:1012 (ESTABLISHED)
python  12583 jeroenp    8u  IPv4 8345460      0t0  TCP 192.168.124.38:48250->192.168.124.23:http (CLOSE_WAIT)
  • The lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1001/gvfs is a warning not easy to workaround in a short manner as per [Wayback/Archive] privileges – lsof: WARNING: can’t stat() fuse.gvfsd-fuse file system – Unix & Linux Stack Exchange (thanks [Wayback/Archive] pabouk  and [Wayback/Archive] jmunsch):

    In your case lsof does not need to check the GVFS file systems so you can exclude the stat() calls on them using the -e option (or you can just ignore the waring):

    lsof -e /run/user/1000/gvfs

    (via: [Wayback/Archive] lsof: WARNING: can’t stat() fuse.gvfsd-fuse file system /run/user/1001/gvfs – Google Search)

    So you get this:

    # pidof python | tr " " "\n" | xargs -n 1 lsof -i -a -e /run/user/1001/gvfs -p
COMMAND   PID    USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
python  12583 jeroenp    7u  IPv4 8347396      0t0  TCP 192.168.124.38:54576->192.168.124.23:1012 (ESTABLISHED)
python  12583 jeroenp    8u  IPv4 8345460      0t0  TCP 192.168.124.38:48250->192.168.124.23:http (CLOSE_WAIT)
  • When there are no process IDs, you do not want to run lsof, and xargs has an argument just for that: -r, see my earlier post Source: -r argument to pipe (no argument for MacOS)- If no input is given to xargs, don’t let xargs run the utility – Unix & Linux Stack Exchange, so you get this
    # pidof python | tr " " "\n" | xargs -r -n 1 lsof -i -a -e /run/user/1001/gvfs -p

Via:

–jeroen

Posted in *nix, *nix-tools, bash, bash, Development, lsof, Power User, Scripting, Software Development, xargs | Leave a Comment »

JavaScript Bookmarklet to enable Mastodon publishing for a WordPress.com post that is edited in the Classic Editor

Posted by jpluimers on 2023/07/02

I quickly hacked together this JavaScript Bookmarklet today, so it is without any checks and assumes you have enabled one Mastodon account for publishing, that you are hosting your blog on WordPress.com, and using the Classic Editor:

javascript:(function(){
  publicizeFormEditHref = document.getElementById('publicize-form-edit');
  publicizeFormEditHref.click();
  mastodonCheckboxes = document.getElementsByClassName('wpas-submit-mastodon');
  mastodonCheckboxes[0].checked = true;
  publicizeFormHideHref = document.getElementById('publicize-form-hide');
  publicizeFormHideHref.click();
  updateButtonHref = document.getElementById('publish');
  updateButtonHref.click();
})();

The above code is the state of [Wayback/Archive] JavaScript Bookmarklet for the WordPress classic editor which enables mastodon publishing (assuming you have one mastodon publishing account enabled … )  and due to be improved in a later blog post.

This will enable the currently edited post to be published to Mastodon, then update/publish the post.

On enabling one Mastodon account for publishing:

Read the rest of this entry »

Posted in Bookmarklet, Development, HTML, JavaScript/ECMAScript, Mastodon, Power User, Scripting, SocialMedia, Software Development, Twitter, Web Browsers, Web Development, WordPress, WordPress | Leave a Comment »

Need to check out replay.io: The Time Travel Debugger for Web Development

Posted by jpluimers on 2023/06/27

I need to check out [Wayback/Archive.is] The Time Travel Debugger for Web Development:

one frame of the replay.io demo

one frame of the replay.io demo

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Posted in Development, JavaScript/ECMAScript, Scripting, Software Development | 1 Comment »

doegox/EMV-CAP: This tool emulates an EMV-CAP device, to illustrate the article “Banque en ligne : à la decouverte d’EMV-CAP” published in MISC, issue #56

Posted by jpluimers on 2023/06/21

For my link archive: [Wayback/Archive] doegox/EMV-CAP: This tool emulates an EMV-CAP device, to illustrate the article “Banque en ligne : à la decouverte d’EMV-CAP” published in MISC, issue #56.

Via: [Archive] Philippe Teuwen on Twitter: “Our 10 years old EMV-CAP emulator is now republished on Github under GPL3+, use it responsibly! …” / Twitter

Related:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

JavaScript – how to refresh an iframe automatically – Stack Overflow

Posted by jpluimers on 2023/06/14

Based on [Wayback/Archive] javascript – how to refresh an iframe automatically – Stack Overflow and help from [Archive] Roderick Gadellaa (@RGadellaa) / Twitter, I used this JavaScript code right after the body in the html page to reload part of the iframes every 3 minutes and another part every 3 hours:

<script>
  var iframes3minuteInterval = setInterval( () => {
    const ids3minutes = [ 'agenda_iframe', 'month_iframe' ];
    ids3minutes.forEach( id => {
      element = document.getElementById( id );
      element.src = element.src;
    });
  }, 1000 * 60 * 3);
  var iframes3hourInterval = setInterval( () => {
    const ids3hours = [ 'weerplaza_nederland_iframe', 'weerplaza_radar_iframe', 'buienradar_iframe' ];
    ids3hours.forEach( id => {
      element = document.getElementById( id );
      element.src = element.src;
    });
  }, 1000 * 60 * 60 * 3);
</script>

The iframes are widgets for:

This was to workaround GitLab pages on a custom domain are nice, but be aware of intermittent 502 and certificate errors. Now the page only gets loaded once, and the widgets at intervals that are needed.

—jeroen

Posted in CSS, Development, HTML, JavaScript/ECMAScript, Scripting, Software Development, Web Development | Leave a Comment »

Side effect-free bookmarklets: wrap them in an IIFE (Immediately Invoked Function Expression)

Posted by jpluimers on 2023/06/08

In Bookmarklets for Archive.is and the WayBack Machine to go to the original page, I wrote about how the Shadow DOM is used to prevent side effects between the code of the WayBack machine and the archived page.

In a similar manner, Bookmarklets can also interfere with code on the page and vice versa, for instance by using global variables.

That is why the [Wayback/Archive] A simple bookmarklet to tweet the current page – DEV Community is wrapped in a special kind of function:

javascript:(function(){
  n=getSelection().anchorNode;
  t=n.nodeType===3?n.data:n.innerText;t='“'+t+'”\\n\\n';
  window.open(`https://twitter.com/intent/tweet?
  text=${encodeURIComponent(t)}${document.location.href}`)
})()

This is an [Wayback/Archive] IIFE – MDN Web Docs Glossary: Definitions of Web-related terms | MDN or “Immediately Invoked Function Expression”, a mechanism coined by [Archive] Ben Alman (@cowboy) / Twitter at [Wayback/Archive] Ben Alman » Immediately-Invoked Function Expression (IIFE).

Since the variables are inside the function body, they won’t interfere with the page. The body will be immediately executed.

Related:

–jeroen

Posted in Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers | Leave a Comment »

Bookmarklets for Archive.is and the WayBack Machine to go to the original page

Posted by jpluimers on 2023/06/07

Quite often, when browsing an archived page on Archive.is or the WayBack Machine, I want to check the current status of the original page.

So I wrote a few Bookmarklets.

Archive.is

Default field

Any Archive.is page has a Saved from field which is an input html element having a name attribute with value q and a value property containing the URL, which is navigated to by assigning the location in the above code.

So my goto Bookmarklet is this one:

javascript:open(document.getElementsByName("q")[0]?.value)

It uses [0]? as there is no getElementsByName, but there is [Wayback/Archive] Document.getElementsByName() – Web APIs | MDN as name values need not to be unique but id values have to be.

Other Archive.is fields

The above works on all types of Archive.is page types:

  1. search pages like https://archive.is/https://example.org
  2. actual archived pages like https://archive.is/LkpeZ and https://archive.ph/2022.01.22-165646/https://example.org/
    • these only have a Saved from field.
  3. redirected archived pages like https://archive.ph/UEQeg and https://archive.ph/2013.01.03-111457/http://www.iana.org/domains/example/
    • these both have Saved from and Redirected from fields.
  4. complex pages like https://archive.ph/5iVVH and https://archive.ph/2015.11.14-044109/http://www.example.org/
    • those have even more fields: in addition to fields Saved from and Redirected from, the fields Via and Original also are added.

To get the additional fields from the other fields, we need to figure out a way to access them.

Read the rest of this entry »

Posted in Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers | 1 Comment »

Why I try to keep an online copy of my bookmarklets in html instead of Markdown

Posted by jpluimers on 2023/06/01

As Chrome mangles Bookmarklets to a partially escaped form (I think using Percent encoding), I first tried to document my Bookmarklets in Markdown so I could easier edit them and copy these JavaScript links  to various browsers. That failed, because the html rendered from the Markdown didn’t contain the links any more. So I now use plain html for documenting them which is a pain to edit but works.

[Wayback/Archive] Some bookmarklets hosted as [Wayback/Archive] Some bookmarklets – cached 1 minute – throttled and [Wayback/Archive] Some bookmarklets – cached 1 year – CDN.

This is why:

  1. Technically you can include JavaScript for Bookmarklets in Markdown documents both as Markdown links (either with escapes or by splitting reference and link in two pieces) and html links (as embedding html in Markdown is allowed): [Wayback/Archive] Bookmarklet link in Markdown document – Stack Overflow (thanks [Wayback/Archive] Adam Haile, [Wayback/Archive] Zombo and [Wayback/Archive] stevemegson)
  2. Because of security reasons, many hosters will filter out JavaScript when transforming Markdown in html [Wayback/Archive] Embed JavaScript in GitHub README.md – Stack Overflow (thanks [Wayback/Archive] Matt Smith and [Wayback/Archive] coyotte508)

Searches: [Wayback/Archive] markdown javascript in link – Google Search and [Wayback/Archive] “embed javascript” in markdown – Google Search.

–jeroen

Posted in Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers | Leave a Comment »

JavaScript bookmarklet to replace part of the archive.li fixing: not possible 

Posted by jpluimers on 2023/05/31

Quite often while saving a URL in the WayBack Machine, the response often is headed “Sorry” with non-descriptive “Job failed”. In the background however, at least half of th…

Related: JavaScript bookmarklet to replace part of the WayBack machine URL

For instance, a while ago for instance http://archive.fo/search/?q=nu.nl, https://archive.fo/search/?q=nu.nl and similar URLs redirected to https://archive.li/search/?q=nu.nl, which in turn redirected to itself:

This page isn’t working

archive.li redirected you too many times.

ERR_TOO_MANY_REDIRECTS

This isn’t a cookie thing as it happens in an anonymous window on several browsers as well. Most redirect checkers return a 429, as Archive Today has quite strict rate limiting:

I tried these bookmarklets to go to a good archive.is link from the above replacing http://archive.fo/search/?q=nu.nl,  https://archive.fo/search/?q=nu.nl, http://archive.li/search/?q=nu.nl and https://archive.li/search/?q=nu.nl with https://archive.is/search/?q=nu.nl (with the same above bolded parts):

javascript:(function() {window.location=window.location.toString().replace(/^http.?:\/\/archive\.[is|li]\//,'https://archive.is/');})()

It can even be simpler (but maybe not fully conformant to specs):

javascript:location=location.href.replace(/^http.?:\/\/archive\.[is|li]\//,'https://archive.is/')

These both fail!

Even a simple bookmarklet like this fails too:

javascript:alert('hello world!');

It took me a bit of thinking to figure out why, but then figured out that any JavaScript requires a page context to run, and when no page is displayed, there is no context to run on.

And indeed:

–jeroen

Posted in Bookmarklet, Development, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Browsers | Leave a Comment »

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