Where does GM_setValue store data? - google-chrome

Where does GM_setValue store the data to in chrome. I've tried to determine where the data is going but couldn't figure it out. I monitored with process monitor and saw that when I stored a value chrome was updating a chrome_iwoeoiifoi2h3iofhufsdfnvdf type of file and I opened that up with an sqlite browser but the data was not there. I've looked at all the recently modified files trying to find the data but could not find it.
Latest chrome/TM.

In Tampermonkey, GM_setValue() data is stored in a LevelDB database that can be found in the User Data Directory tree.
Once in Chrome's "User Data Directory" (EG: C:\Users\USER_JOE\AppData\Local\Google\Chrome\User Data\Default\),
navigate to the Local Extension Settings\dhdgffkkebhmkfjojejmpbldmpobfkfo folder.
(gcalenpjmijncebpfijmoaglllgpjagf for the Tampermonkey Beta.)
There you will find a LevelDB database, usually named CURRENT. You can manipulate it with tools like LevelDB JSON, but external support for LevelDB currently appears to be spotty and I did not find any working tools for Windows yet (might have to compile your own).
You can also use the Chrome Storage Area Explorer extension to explore the data.
As of Tampermonkey 4.3.6, you can see an individual script's data with the Storage tab in the built-in script editor: (if the 'Storage' tab is not visible, edit Tampermonkey Settings > General Config mode > Advanced)
OLD, Pre November-ish 2015:
Before, about November 2015, data was stored in a Web SQL database in databases\chrome-extension_dhdgffkkebhmkfjojejmpbldmpobfkfo_0.
Once you have navigated to the correct folder, you will typically see two files. On my machine, they are currently just named 4 and 6. These are both SQLite files (the backend for Chrome's Web SQL implementation) and can be inspected with a SQLite viewer/utility.
The (normally) larger file, 6 on my machine, is a somewhat disturbing list of 94-thousand userscripts! I'm not sure what purpose it serves, but haven't investigated it much.
The smaller file (initially, at least), 4 on my machine, is where all the information about/for your userscripts is kept. This includes any data set by GM_setValue().
For example, if I install and run this userscript:
// ==UserScript==
// #name _GM_setValue demo
// #match https://stackoverflow.com/questions/*
// #grant GM_setValue
// ==/UserScript==
GM_setValue ('foo', 'bar');
And then I inspect the `config` table in file `4`, I will see four entries like this:
[![DB entries for sample script][8]][8]
The one you want is the `#st` row. Notice how it has the `GM_setValue` data encoded? :

Related

How do you reopen messages.json in Sublime Text (3)?

I read packagecontrol.io's doc
regarding messages.json, but what I'm referring to is the file tab that sublime text typically displays upon a new package install. It appears as a continuous roll of installation notes throughout multiple installations. It appears that this is a feed of the individual messages.json files displayed when the packages are downloaded. Is there a way to open the unified file that displays messages from multiple packages? Or is there a more common way to access these package files?
What you are asking about are the install and release messages pointed to by those keys inside messages.json. For example, from one of my packages,
{
"install": "messages/install.txt",
"1.2.1": "messages/1.2.1.txt",
"1.3.0": "messages/1.3.0.txt",
"1.3.1": "messages/1.3.1.txt",
"1.4.2": "messages/1.4.2.txt",
"2.0.1": "messages/2.0.0.txt",
"2.1.1": "messages/2.1.0.txt",
"2.2.0": "messages/2.2.0.txt",
"2.2.1": "messages/2.2.1.txt"
}
Whenever someone installs the package for the first time, Package Control prints the contents of messages/install.txt to that new view you mentioned. It will also print the file corresponding to the current release, which is a "release" tagged on Github. If I were to go and release 2.3.0, for example, and not update messages.json, no update message would be printed telling users I'd pushed out a new version. In some cases this is desirable, in case I had to quickly push out a point release to fix some stupid mistake I made in a major (or minor) release, not that I've ever done that before :) But, in most cases, I want to keep users up to date on development, so I'll write a message for them in a new file, and add an appropriate key and value to messages.json.
Is there a way to open the unified file that displays messages from multiple packages? Or is there a more common way to access these package files?
The view that opens and shows you the messages from all the newly-installed and -upgraded packages is unique to you and your particular situation - there is no way to recover it once you close the tab. However, if you're interested in a particular package's message(s), just use PackageResourceViewer (in ST3) to open the package, view the messages.json file to see which is the most recent file you want to view, then find and read that file. In ST2 all packages are already unpacked in your Packages folder.

chrome "aw, snap" crash, but can't see crash log in chrome://crashes but see DMP generated, so what is the quickest way to interpret this DMP file

I can see my page get crash(see aw, snap page) with 20% proprobility after 10 mins(otherwise it runs well like forever)
so I tried:
1) CPU and memory check with task manager, and see no increasing(so no leakage).
2) enable crush log in the chrome://settings/
result:
2.1) see still nothing in the chrome://crashes page, not even a crush ID (0 crashes).
2.2) see nothing in the folder under path
C:/%User%/AppData/Local/Google/CrashReports (nothing in) nor
C:/%User%/AppData/Local/Google/Chrome/User Data/Crash Reports (folder not exist)
2.3) but indeed see DMP in the:
C:/%User%/AppData/Local/Google/Chrome/User Data/CrashPads/reports
but seems they are not readable, and it also seems not the correct address for crash logs
3) can get chrome log either by command line arguments, or using sawbuck, but found nothing but only 2 errors, one for sawbuck itself, and another saying can't send the report to google.
So the questions are:
1) are those DMP the crash logs(the default Dir for dump file has been changed for chrome v50)
2) how can I abstract information out of the DMP file, if chrome://crashes page shows nothing (for chrome on windows)
p.s. 2 usage pages are found at https://www.chromium.org/developers/decoding-crash-dumps
https://www.chromium.org/developers/crash-reports
but seems it's not for windows without a recompile of chrome's component, is there any 3rd party tools to interpret the DMP file?
env informations:
chrome version: 50.0.2661.02 m
; Host OS: windows 10
The crash dumps (.dmp files) in C:\Users\<user>\AppData\Local\Google\Chrome\User Data\Crashpad\reports can be read by standard Windows debuggers. WinDbg is one tool (provided by Microsoft) for analysing these dumps; it's not going to win any beauty contents, but it's powerful and gets the job done. The recommended way to obtain it is, somewhat bizarrely, the Windows Driver Kit.
You'll need debugging symbols to make sense of the results, and these aren't included in standard builds of Chrome. To get symbols for both Chrome and the Windows runtime, set the following as your Symbols path:
SRV*c:\symbols*https://msdl.microsoft.com/download/symbols;SRV*c:\symbols*https://chromium-browser-symsrv.commondatastorage.googleapis.com
There are numerous resources on using WinDbg on the web; this cheat sheet contains some useful commands to get you started.

Is there a way to compare two .exes to see what differs between them?

Is there a tool / process by which I can decompile two .exes (one of which runs on a handheld device, the other which doesn't) so that I can get a glimpse into what differs/what the problem may be?
Of course, seeing that one has "00xA" where the other has "00xB" won't help me. I mean a way to see code that differs, or more likely, a compiled resource or config file difference, or some build option or so?
I'm almost positive the problem has nothing to do with code per se (if/while/switch statements, etc.) but with the project setup.
I cannot compare the working source, as it does not exist - I only have the .exe from which it came. The source I have available is a "reasonable facsimile" of it, but not exactly the same, at least not in project settings and configurations, etc.
UPDATE
Re: this page, I'm not familiar with some of the terminology; specifically, where it talks about a "FLATRELEASEDIR" - WTH?
Will this work to test my CE-bound* .exe on my PC:
Run depends.exe*
Open my CE-bound** .exe
Stare in wonder at the amazing plethora of errata and data
?
*Supposedly not to be confused with "adult diapers"
** "bound" as in, "that's where it's headed"
UPDATE 2
Here's what I see when running Dependency Walker on my app:
...but note my dilemma here.
UPDATE 3
Here's what I did to try to replicate my handheld environment on my PC as best as possible:
I wanted to just copy over the whole dad-burned thing (the entire handheld device representation from Windows Explorer), but it won't let me do that - it's not copyable, so I copied over just the "Program Files" folder (which contains the subfolder of my app and a couple of other folders which I don't know are standard or custom/peculiar to us).
This is from the handheld device where the .exe in question does run properly, so obviously (theoretically?) there should be no missing modules - Dependency Walker should run it and say all is well.
However, it doesn't; I get the same results as the one p[a,o]sted above.
Note: This is true even after selecting "Options > Configure Module Search Order... > The Application Directory > Move Up in Dependency Walker.
So since even an .exe that runs fine tests out as being "not ready for CE-time", how can I use this to accurately test which, if any, necessary files are missing?
Do I need to copy over other folders, too, or what?
UPDATE 4
So, the (supposedly?) missing modules are:
API-MS-WIN-APPMODEL-RUNTIME-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-ERROR-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-ROBUFFER-L1-1-0.DLL
API-MS-WIN-CORE-WINRT-STRING-L1-1-0.DLL
API-MS-WIN-SHCORE-SCALING-L1-1-1.DLL
DCOMP.DLL
GPSVC.DLL
IESHIMS.DLL
If true, then why does the .exe run on the handheld?
Note: Other folders on the handheld are:
Application Data => only contains "desktop.ini"
BTExplorer
My Documents => contains a "desktop.ini" and several SQLCE databases (*.SDF)
profiles => contains an empty "default" folder
Recycled => contains a single ".lnk" file
Temp => contains a handful of ".tmp" files
Windows => contains a slew of folders and files, including several .DLLs, but none of those listed above
The "Program Files" folder has a ".NET Compact Framework" subfolder, but it is empty.
In the \Windows\AppMgr folder, there are some interesting files, such as:
Microsoft .NET Compact Framework.DAT
Microsoft .NET Compact Framework.DLL
...several other DAT/DLL pairs, including:
Symbol Managed Class Libraries.DAT (no corresponding DLL)
...and even a pair:
SSCS HHS.[DAT,DLL]
-- which is our company acronym (SSCS) and name of the project (HHS)
What generates these? From where are they referenced??
Another possible piece of the puzzle is that the handheld device on which the .exe does not work does not have a \Windows\AppMgr folder, and thus does not have those .DAT/.DLL files listed above...
UPDATE 5
Another oddity:
After reading this: "Files that install in the GAC go in the\Windows directory" in the book "Microsoft .NET Compact Framework" by Andy Wiggly, et al, I tried copying the Windows folder from the handheld device to the spot on my PC below the folder named "3910ProgramFilesFolderCopy" which looks like this in Explorer:
C:
3910ProgramFilesFolderCopy
Program Files
Windows <= tried to copy the "Windows" folder from the handeld on top of "3910ProgramFilesFolderCopy" so it would end up here
...but it only copies a few files before borborygmas occurs (electronic borborygmas, that is) and it tells me, "the system cannot find the file specified"
Heavens to Murgratroid!?! Why does it find some but not all? Looking at the Windows folder on the handheld in Windows Explorer, I see that many of the precious DLLs are greyed out:
Arggh, double-arg, and (&c)
For PC you could try .NET Reflector.
http://www.red-gate.com/products/dotnet-development/reflector/
You may try to use dependency walker to undestand wich DLL/APIs they need and check if those are supported on your device.
http://geekswithblogs.net/WindowsEmbeddedCookbook/archive/2011/02/02/using-dependency-walker.aspx

How works chrome.fileSystem.isRestorable?

chrome.fileSystem.isRestorable is a new part of the chrome.fileSystem API and it saif if a file can be restored with its entry or not. I've made many tests but something is wrong, when I tried to do :
chrome.storage.local.get(
["recentFileId1"],
function(recent) {
chrome.fileSystem.isRestorable(
recent["recentFileId1"],
function (isRestorable){
console.log(isRestorable);
});
});
It returns me true, even if the file has been deleted of my computer. recentFileId1 seems like a real id (many numbers and the path at the end, for example FD158F2A41037D17440C025C1CA5FE08:question.txt) and the file's restoration works if the file is still on my computer. When I tried to restore the file with an id of a deleted file it just returns nothing, no error.
So I want to know : did I use this feature wrong or something? It can work if I try to restore and see what is restored (if it returns nothing the file has been deleted), but I don't want to use a hack if the API is available.
Thanks.
This function is currently only available in the dev channel of Chrome, and should be released to stable in version 31.
What you're describing sounds like a bug, please file it at http://crbug.com. We should always return true or false. What the correct behavior in this case should be is not clear.
The intent of this function is to let an app know if it should provide UI to give the user access to previously opened files. If a file is restorable, it simply means the app still has permission to access the file.
We are reserving the right to limit when files are restorable. E.g. we might have an arbitrary upper limit to how many files can be restored, or the access might timeout after a few months, or we may give the user the option of not letting apps restore any files. isRestorable lets you know if access to a previously opened file is still available.
isRestorable is not intended to give information about how accessible the file still is. Local changes can impact this - e.g. the file might be deleted or the OS access permissions changed. It might still be there but be invisible to chrome and the app due to no read access to the containing folder.
Think about a recent documents menu. This could show files which were opened and since deleted. When the app restores a deleted app it would not work and would show an error to the user. At that point the user might go to their recycle bin or git checkout and replace the file.
Or the recent documents menu could just not show files which have been deleted.
Either way your app should not rely on isRestorable as an indication of whether a file entry can be regained and successfully used, you should handle restoreFile not restoring a file and giving an error, and handle access to the file having permission problems.

Can I add some public meta data to an encrypted Access 2010 database?

My application stores its data in an Access 2010 database (accdb) file. It's password protected, which means it's encrypted w/ AES-128.
I'd like to add some meta data to the file that's publically available. This way older verisons of my application can investigate the file to see if it's even worth trying to open. Otherwise, they'll just get the dreaded "Unrecognized Database Format" error, which is usually associated with file corruptions.
In Windows, you can right-click on a file, click "Properties" and see attributes under the Details tab. I'd love it if I add attributes like the version of my application that last touched the file, and maybe other details. I'd like to avoid having a different file extension for each version of my app!
Is it possible to add some public meta data to an encrypted Access 2010 database?
You can add custom database properties : http://support.microsoft.com/default.aspx?scid=kb;en-us;q178745
You can change the file extension of an encrypted Access database and change the properties for that extension. The extension .enc is fairly descriptive and does not seem to be widely used.
The file will open normally when clicked and ask for the password. The icon will be recognizably Access and the description, "Encrypted MS Access" in this case, will appear under Type in a directory listing.
With NTFS, you can add an alternate data stream (ADS):
notepad.exe z:\docs\testde.enc:Extra.txt
Reading the stream:
more < testde.enc:extra.txt
More information: http://www.think-techie.com/2010/04/alternate-data-streams.html
http://www.irongeek.com/i.php?page=security/altds
This is a tough nut to crack! An application must read information about the ACCDB, but that information can't be stored in the ACCDB because you want the read without opening the ACCDB. And you can't use the suggested file system methods because this must work under Wine on Mac (I assume from another of your questions).
The only solution I can see is to create a companion file (with same base name but different extension) to hold the metadata. So if your application wants to know about SomeDb.accdb, it would look for a file named SomeDb.metadata and read that instead.
I suggested a kludge for your earlier question ... unfortunately this is another. :-) However, it's a simple kludge and it should work ... even on Mac.