How to parse JavaScript from Zsh?

How to parse JavaScript from Zsh?

[TJ Luoma]

Long story short… my home network is satellite Internet. It has a
20gb/month quota (not a typo). I used to be able to parse the output
of http://192.168.0.1 using `lynx` but they üpgraded their system and
now http://192.168.0.1 uses JavaScript to deliver the information.

I can't figure out how to parse JavaScript from a Zsh script.

Ok, I admit that this is skirting on the edge of Zsh here, but I've
been googling for a couple hours and don't seem to be finding anything
close to a solution. Maybe just haven't found the right keywords, but
I'm getting a ton of unrelated crap.

I'm guessing there's some tool out there like `lynx` or `wget` or
`curl` which can parse JavaScript from the command line, but I can't
find whatever it is.

So I'm hoping maybe someone here has already reached the top of this
mountain and can point me in the right direction.

TjL

Re: How to parse JavaScript from Zsh?

[Thiago Padilha]

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Parsing a complex language like javascript is not the job for a shell
language

Perhaps they are sending just JSON and you mistake with javascript? If its
just json you can try this https://github.com/micha/jsawk it targets bash
but should work with zsh.


On Thu, Oct 31, 2013 at 11:52 PM, TJ Luoma <luomat@gmail.com> wrote:

> Long story short… my home network is satellite Internet. It has a
> 20gb/month quota (not a typo). I used to be able to parse the output
> of http://192.168.0.1 using `lynx` but they üpgraded their system and
> now http://192.168.0.1 uses JavaScript to deliver the information.
>
> I can't figure out how to parse JavaScript from a Zsh script.
>
> Ok, I admit that this is skirting on the edge of Zsh here, but I've
> been googling for a couple hours and don't seem to be finding anything
> close to a solution. Maybe just haven't found the right keywords, but
> I'm getting a ton of unrelated crap.
>
> I'm guessing there's some tool out there like `lynx` or `wget` or
> `curl` which can parse JavaScript from the command line, but I can't
> find whatever it is.
>
> So I'm hoping maybe someone here has already reached the top of this
> mountain and can point me in the right direction.
>
> TjL
>

Re: How to parse JavaScript from Zsh?

[Abhijeet Rastogi]

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You should perhaps try to sniff the GET/POST request that's being done via
Ajax and get to curl that URL.

- Sent from my Galaxy Note 3
On 1 Nov 2013 08:26, "TJ Luoma" <luomat@gmail.com> wrote:

> Long story short… my home network is satellite Internet. It has a
> 20gb/month quota (not a typo). I used to be able to parse the output
> of http://192.168.0.1 using `lynx` but they üpgraded their system and
> now http://192.168.0.1 uses JavaScript to deliver the information.
>
> I can't figure out how to parse JavaScript from a Zsh script.
>
> Ok, I admit that this is skirting on the edge of Zsh here, but I've
> been googling for a couple hours and don't seem to be finding anything
> close to a solution. Maybe just haven't found the right keywords, but
> I'm getting a ton of unrelated crap.
>
> I'm guessing there's some tool out there like `lynx` or `wget` or
> `curl` which can parse JavaScript from the command line, but I can't
> find whatever it is.
>
> So I'm hoping maybe someone here has already reached the top of this
> mountain and can point me in the right direction.
>
> TjL
>

Re: How to parse JavaScript from Zsh?

[TJ Luoma]

On Thu, Oct 31, 2013 at 10:59 PM, Thiago Padilha <tpadilha84@gmail.com> wrote:
> Perhaps they are sending just JSON and you mistake with javascript? If its
> just json you can try this https://github.com/micha/jsawk it targets bash
> but should work with zsh.

Well, this sent me back looking more closely at it… yes, it was
javascript… but the good news is that when I started poking around I
found that the information I wanted was being pulled (via JS) from a
regular HTML page.

So now I'm just parsing that using curl, sed, and tr.

(You can even see it at https://gist.github.com/tjluoma/7260924 if you
want, but I warn you: it's ugly. But it works.)

Thanks!

TjL