BackDoorLock hack - prevents silent updates - Page 10

knc1 · 11-18-2014, 12:03 PM

Quote:

Originally Posted by NiLuJe

@pghaworth: Same root (ha! pun intended) issue as the rest of the havoc caused by FW 5.6.1, KUAL (and thus, and more importantly, what it runs) doesn't run as root anymore, and as such doesn't have the permissions required to do most of the stuff we assumed we could do before.

TL;DR: Right now, most KUAL scripts are broken on FW 5.6.1.

I updated my PW2 upgrade overview this morning to include a reference to "De-Bricking" a PW2 over the serial port.
Some might consider having 5.6.1 installed on a PW2 a "Bricked" situation.

That reference requires a "main" file system image.
I haven't checked, but don't we have pre-5.6.1 forensic images posted for debricking?
If not, we probably should.

I am not sure how we will handle the KT2 forensic images for debricking -
It first hit the streets running 5.6.1

Maybe a KT + early PW2 cross-breed image?
Not certain - it is on my list of things to check into (since I seem to have the only disassembled KT2 here

).

NiLuJe · 11-18-2014, 12:58 PM

@knc1: We don't really need anything special, since the official updates ship with a full rootfs, so, just pick one >= 5.3.2

.

mg10 · 11-18-2014, 05:02 PM

I have a doubt. If I comment or delete the lines with "OTA" word in "/etc/todo/handler_registry.conf", this should be enough to stop OTA updates from Amazon, isn't it?

knc1 · 11-18-2014, 05:15 PM

Quote:

Originally Posted by NiLuJe

@knc1: We don't really need anything special, since the official updates ship with a full rootfs, so, just pick one >= 5.3.2

.

We can't just copy it, but we could certainly make an mmcblk0p1 image out of the contents.

spinda · 12-19-2014, 12:00 AM

Does this work properly on 5.6.1(.0.2)?

iGold · 12-19-2014, 02:13 AM

@spinda: no, my Kindle upgraded from 5.6.1 to 5.6.1.0.2 with installed extension and locked door.

As I can see in 5.6.1 com.lab126.ota was renamed to com.lab126.otav1 in /etc/todo/handler_registry.conf, so lock.sh/unlock.sh needs to be patched.

dsmid · 12-19-2014, 03:16 AM

Thanks for the hint, the new version 12 now looks for ^com.lab126.ota.*$

dsmid · 12-19-2014, 03:17 AM

Version 12:

Should work on 5.6.1x

Ruskie_it · 12-20-2014, 02:03 AM

Quote:

Originally Posted by dsmid

Thanks for the hint, the new version 12 now looks for ^com.lab126.ota.*$

I'm not a guru of regex, but shouldn't string:

com.lab126.otav1

Escape the regex: ^com.lab126.ota.*$ because of the fact that you put a dot after 'ota' and before '*'?

NiLuJe · 12-20-2014, 08:55 AM

dot means 'any character', so, nope, it's good

.

Ruskie_it · 12-20-2014, 09:53 AM

Then why use . AND *?
Aren't they redundant?

NiLuJe · 12-20-2014, 10:03 AM

@Ruskie_it: * means '(previous) character appears zero or multiple times'

. Hence .* basically matches anything, or nothing. regex is not shell globbing

.

Ruskie_it · 12-20-2014, 12:16 PM

Quote:

Originally Posted by NiLuJe

@Ruskie_it: * means '(previous) character appears zero or multiple times'

. Hence .* basically matches anything, or nothing. regex is not shell globbing

.

In other words, I have to do my homework

Too much time without tinkering with os scripting at all. :P

knc1 · 12-20-2014, 01:40 PM

Quote:

Originally Posted by Ruskie_it

In other words, I have to do my homework

Too much time without tinkering with os scripting at all. :P

Code:

man 7 regex

In a terminal on a full *nix install or in your favorite web search engine:
http://man7.org/linux/man-pages/man7/regex.7.html

Ruskie_it · 12-20-2014, 01:58 PM

Yeah yeah, there are plenty of resources for that, and I have my very own on work laptop somewhere... it's just so much time I don't use it.

12-20-2014, 10:03 AM	#147
NiLuJe BLAM! Posts: 13,477 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@Ruskie_it: * means '(previous) character appears zero or multiple times' . Hence .* basically matches anything, or nothing. regex is not shell globbing . Last edited by NiLuJe; 12-20-2014 at 10:05 AM.

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11-18-2014, 12:58 PM	#137
NiLuJe BLAM! Posts: 13,477 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	@knc1: We don't really need anything special, since the official updates ship with a full rootfs, so, just pick one >= 5.3.2 .

11-18-2014, 05:02 PM	#138
mg10 Connoisseur Posts: 77 Karma: 10 Join Date: Jul 2013 Device: Kindle Scribe, PW, Kobo Aura One	I have a doubt. If I comment or delete the lines with "OTA" word in "/etc/todo/handler_registry.conf", this should be enough to stop OTA updates from Amazon, isn't it?

12-19-2014, 12:00 AM	#140
spinda Member Posts: 12 Karma: 7954 Join Date: Dec 2014 Device: Kindle PW1/2/3/4/5, KV, KT2, K2	Does this work properly on 5.6.1(.0.2)?

12-19-2014, 02:13 AM	#141
iGold Junior Member Posts: 4 Karma: 10 Join Date: Nov 2013 Location: Russia Device: Kindle PW2	@spinda: no, my Kindle upgraded from 5.6.1 to 5.6.1.0.2 with installed extension and locked door. As I can see in 5.6.1 com.lab126.ota was renamed to com.lab126.otav1 in /etc/todo/handler_registry.conf, so lock.sh/unlock.sh needs to be patched.

12-19-2014, 03:16 AM	#142
dsmid Linux devotee Posts: 598 Karma: 2069047 Join Date: Feb 2011 Device: Kindle 3, Kindle 4B, Kindle PW2	Thanks for the hint, the new version 12 now looks for ^com.lab126.ota.*$

12-19-2014, 03:17 AM	#143
dsmid Linux devotee Posts: 598 Karma: 2069047 Join Date: Feb 2011 Device: Kindle 3, Kindle 4B, Kindle PW2	Version 12: Should work on 5.6.1x

12-20-2014, 08:55 AM	#145
NiLuJe BLAM! Posts: 13,477 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	dot means 'any character', so, nope, it's good .

12-20-2014, 09:53 AM	#146
Ruskie_it Fanatic Posts: 536 Karma: 1000000 Join Date: Dec 2011 Location: Rome, Italy Device: Kindle PW5, Kindle PW4, Kindle 4 NT	Then why use . AND *? Aren't they redundant?

12-20-2014, 01:58 PM	#150
Ruskie_it Fanatic Posts: 536 Karma: 1000000 Join Date: Dec 2011 Location: Rome, Italy Device: Kindle PW5, Kindle PW4, Kindle 4 NT	Yeah yeah, there are plenty of resources for that, and I have my very own on work laptop somewhere... it's just so much time I don't use it.

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