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concise-encoding
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ntfy | concise-encoding | |
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288 | 22 | |
16,590 | 255 | |
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9.6 | 7.2 | |
6 days ago | 7 months ago | |
Go | ANTLR | |
Apache License 2.0 | GNU General Public License v3.0 or later |
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How I keep myself Alive using Golang
Slightly related, but I've also been working on and off for a few years on my own Type 1 Diabetes management solution (https://github.com/algao1/iv3).
I haven't had time to work on it recently, but it uses ntfy (https://ntfy.sh/) to send alerts and such.
I was thinking of eventually incorporating some kind of automatic remedial solution eventually to help keep my glucose in range, but haven't had any time to look into it yet.
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FBI using push notification tokens to identify anonymous users
If you go to the settings, there should be a notification category, which then contains another menu "App Notifications" where you can see all the apps that are allowed to receive notifications, but I don't know if this will stop google play services to receive these identifiers.
I use GrapheneOS, so I don't have any google play services running, but for the apps where I need notifications I use https://unifiedpush.org/ (only a few apps implement it) and I host my own https://ntfy.sh server.
- I pwned half of America's fast food chains, simultaneously
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Ask HN: What apps have you created for your own use?
Kind of similar, in the early days of COVID, I accidentally discovered that my state's website would have test results available several hours before they sent out the "view your results" email. So I made a script that would check the site every five or ten minutes and then ping me as soon as the result changed to something besides PENDING.
In the course of that I stumbled on https://ntfy.sh/ which solved the notification problem without needing Twitter, and I've used it since then to let me know when long-running scripts complete.
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Governments spying on Apple, Google users through push notifications
I connect any app that supports https://unifiedpush.org/ to a self hosted https://ntfy.sh instance for fully self hosted push notifications
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It's this time of the year again... which open-source project are you donating to?
changedetection.io just donated to the awesome crew over at ntfy.sh
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2U Quiet & Efficient DIY Server Build
For further monitoring & alerting about critical cpu temperatures (unlikely now) for example, I plan to use notify & something else. Haven't thought about this much yet though.
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Deno Cron
I've started tossing https://ntfy.sh/ alerts into my Deno apps to get push notifications for things I'm interested in
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Planning for Low Energy Self Hosted Docker
ntfy.sh
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Add extra stuff to a “standard” encoding? Sure, why not
If it was for fun and to learn how, that's fair. But are you aware of https://ntfy.sh?
concise-encoding
- Ask HN: What Underrated Open Source Project Deserves More Recognition?
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It's Time for a Change: Datetime.utcnow() Is Now Deprecated
"Local time" is time zone metadata. I've written a fair bit about timekeeping, because the context of what you're capturing becomes very important: https://github.com/kstenerud/concise-encoding/blob/master/ce...
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RFC 3339 vs. ISO 8601
This is basically why I ended up rolling my own text date format for Concise Encoding: https://github.com/kstenerud/concise-encoding/blob/master/ct...
ISO 8601 and RFC 3339 are fine for dates in the past, but they're not great as a general time format.
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Ask HN: Please critique my metalanguage: “Dogma”
This looks similar to https://concise-encoding.org/
Dogma was developed as a consequence of trying to describe Concise Binary Encoding. The CBE spec used to look like the preserves binary spec, full of hex values, tables and various ad-hoc illustrations: https://preserves.dev/preserves-binary.html
Now the CBE formal description looks like this: https://github.com/kstenerud/concise-encoding/blob/master/cb...
And the regular documentation looks like this: https://github.com/kstenerud/concise-encoding/blob/master/cb...
Dogma also does text formats (Concise Encoding has a text and binary format, so I needed a metalanguage that could do both in order to make it less jarring for a reader):
https://github.com/kstenerud/concise-encoding/blob/master/ct...
https://github.com/kstenerud/concise-encoding/blob/master/ct...
- Concise Encoding Design Document
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Keep ’Em Coming: Why Your First Ideas Aren’t Always the Best
Hey thanks for taking the time to critique!
I actually do have an ANTLR file that is about 90% of the way there ( https://github.com/kstenerud/concise-encoding/tree/master/an... ), so I could use those as a basis...
One thing I'm not sure about is how to define a BNF rule that says for example: "An identifier is a series of characters from unicode categories Cf, L, M, N, and these specific symbol characters". BNF feels very ASCII-centric...
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Working in the software industry, circa 1989 – Jim Grey
It's still in the prerelease stage, but v1 will be released later this year. I'm mostly getting hits from China since they tend to be a lot more worried about security. I expect the rest of the world to catch on to the gaping security holes of JSON and friends in the next few years as the more sophisticated actors start taking advantage of them. For example https://github.com/kstenerud/concise-encoding/blob/master/ce...
There are still a few things to do:
- Update enctool (https://github.com/kstenerud/enctool) to integrate https://cuelang.org so that there's at least a command line schema validator for CE.
- Update the grammar file (https://github.com/kstenerud/concise-encoding/tree/master/an...) because it's a bit out of date.
- Revamp the compliance tests to be themselves written in Concise Encoding (for example https://github.com/kstenerud/go-concise-encoding/blob/master... but I'll be simplifying the format some more). That way, we can run the same tests on all CE implementations instead of everyone coming up with their own. I'll move the test definitions to their own repo when they're done and then you can just submodule it.
I'm thinking that they should look more like:
c1
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Breaking our Latin-1 assumptions
Ugh Unicode has been the bane of my existence trying to write a text format spec. I started by trying to forbid certain characters to keep files editable and avoid Unicode rendering exploits (like hiding text, or making structured text behave differently than it looks), but in the end it became so much like herding cats that I had to just settle on https://github.com/kstenerud/concise-encoding/blob/master/ct...
Basically allow everything except some separators, most control chars, and some lookalike characters (which have to be updated as more characters are added to Unicode). It's not as clean as I'd like, but it's at least manageable this way.
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I accidentally used YAML.parse instead of JSON.parse, and it worked?
You might get a kick out of Concise Encoding then (shameless plug). It focuses on security and consistency of behavior.
https://concise-encoding.org/
In particular:
* How to deal with unrepresentable values: https://github.com/kstenerud/concise-encoding/blob/master/ce...
* Mandatory limits and security considerations: https://github.com/kstenerud/concise-encoding/blob/master/ce...
* Consistent error classification and processing: https://github.com/kstenerud/concise-encoding/blob/master/ce...
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Ask HN: Who Wants to Collaborate?
In the above example, `&a:` means mark the next object and give it symbolic identifier "a". `$a` means look up the reference to symbolic identifier "a". So this is a map whose "recusive link" key is a pointer to the map itself. How this data is represented internally by the receiver of such a document (a table, a struct, etc) is up to the implementation.
> - Time zones: ASN.1 supports ISO 8601 time types, including specification of local or UTC time.
Yes, this is the major failing of ISO 8601: They don't have true time zones. It only uses UTC offsets, which are a bad idea for so many reasons. https://github.com/kstenerud/concise-encoding/blob/master/ce...
> - Bin + txt: Again, I'm unclear on what you mean here, but ASN.1 has both binary and text-based encodings
Ah cool, didn't know about those.
> - Versioned: Also a little unclear to me
The intent is to specify the exact document formatting that the decoder can expect. For example we could in theory decide make CBE version 2 a bit-oriented format instead of byte-oriented in order to save space at the cost of processing time. It would be completely unreadable to a CBE 1 decoder, but since the document starts with 0x83 0x02 instead of 0x83 0x01, a CBE 1 decoder would say "I can't decode this" and a CBE 2 decoder would say "I can decode this".
With documents versioned to the spec, we can change even the fundamental structure of the format to deal with ANYTHING that might come up in future. Maybe a new security flaw in CBE 1 is discovered. Maybe a new data type becomes so popular that it would be crazy not to include it, etc. This avoids polluting the simpler encodings with deprecated types and bloating the format.
What are some alternatives?
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Portainer - Making Docker and Kubernetes management easy.
cue - CUE has moved to https://github.com/cue-lang/cue