Patch for unlocking builtin Dropbox/Google Drive support

imax · Today, 09:24 AM

I've sent a pull request to kobopatch repo a few days ago (https://github.com/pgaskin/kobopatch-patches/pull/139).

Firmware has a hardcoded list of device models on which these features are enabled. The patch simply changes device model checks to always return "true", effectively enabling them on any device.

I've applied this to my Kobo Libra 2 and Google Drive sync works perfectly well.

Initially I was setting out to find a way to enable them via some simple config changes, but, sadly, it turned out that libnickel simply does

Code:

return this->isFrost() || this->isEuropa();

🫠

If you happen to know of a less intrusive way to achieve the same without patching libnickel.so after every update - please do let me know!

JSWolf · Today, 11:37 AM

Quote:

Originally Posted by imax

I've sent a pull request to kobopatch repo a few days ago (https://github.com/pgaskin/kobopatch-patches/pull/139).

Firmware has a hardcoded list of device models on which these features are enabled. The patch simply changes device model checks to always return "true", effectively enabling them on any device.

I've applied this to my Kobo Libra 2 and Google Drive sync works perfectly well.

Initially I was setting out to find a way to enable them via some simple config changes, but, sadly, it turned out that libnickel simply does

Code:

return this->isFrost() || this->isEuropa();

🫠

If you happen to know of a less intrusive way to achieve the same without patching libnickel.so after every update - please do let me know!

Where is the actual patch?

imax · Today, 11:56 AM

Quote:

Originally Posted by JSWolf

Where is the actual patch?

In the pull request, in the "Files changed" tab. Just in case, also attaching it here.

PeterT · Today, 12:22 PM

I will admit this is a patch I'm not really in favour of; it's adding functionality that is intended for new devices to older ones.

imax · Today, 12:29 PM

Quote:

Originally Posted by PeterT

I will admit this is a patch I'm not really in favour of; it's adding functionality that is intended for new devices to older ones.

My point of view is that the code is already there (and hopefully tested before shipping), the patch simply removes artificial gating of the features to more expensive devices.

I personally prefer having this over third-party scripts for similar results.

PeterT · Today, 01:03 PM

I seem to remember hearing from Kobo devs that one issue was memory usage; that older devices did not have sufficient RAM for this function to be reliable.

imax · Today, 01:59 PM

Quote:

Originally Posted by PeterT

I seem to remember hearing from Kobo devs that one issue was memory usage; that older devices did not have sufficient RAM for this function to be reliable.

Yeah, it might need a bit of RAM. Some devices Kobo ships this to have 512MB of RAM, so any of their devices having that much memory should be fine.

With 256MB I'd still give it a shot, but would be fully prepared to roll it back if it crashes.

Aleron Ives · Today, 05:08 PM

Nice! Did you use Ghidra to locate the relevant functions that need patching?

Today, 09:24 AM	#1
imax Junior Member Posts: 6 Karma: 10 Join Date: Aug 2024 Device: Kobo Libra 2 & PocketBook 360°	Patch for unlocking builtin Dropbox/Google Drive support I've sent a pull request to kobopatch repo a few days ago (https://github.com/pgaskin/kobopatch-patches/pull/139). Firmware has a hardcoded list of device models on which these features are enabled. The patch simply changes device model checks to always return "true", effectively enabling them on any device. I've applied this to my Kobo Libra 2 and Google Drive sync works perfectly well. Initially I was setting out to find a way to enable them via some simple config changes, but, sadly, it turned out that libnickel simply does Code: return this->isFrost() \|\| this->isEuropa(); 🫠 If you happen to know of a less intrusive way to achieve the same without patching libnickel.so after every update - please do let me know!

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Today, 12:22 PM	#4
PeterT Grand Sorcerer Posts: 12,493 Karma: 74358018 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	I will admit this is a patch I'm not really in favour of; it's adding functionality that is intended for new devices to older ones.

Today, 01:03 PM	#6
PeterT Grand Sorcerer Posts: 12,493 Karma: 74358018 Join Date: Nov 2007 Location: Toronto Device: Libra H2O, Libra Colour	I seem to remember hearing from Kobo devs that one issue was memory usage; that older devices did not have sufficient RAM for this function to be reliable.

Today, 05:08 PM	#8
Aleron Ives Wizard Posts: 1,286 Karma: 15502884 Join Date: Sep 2022 Device: Kobo Libra 2	Nice! Did you use Ghidra to locate the relevant functions that need patching?

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