CODEWITHSUNDEEP
objective-cmacosnsuserdefaults
Zohar81
Zohar81

Reputation: 5074

sharing data between multiple processes using NSUserDefault

I'd like to share data between objective-c compiled process and terminal. both running by the same user.

From the objC code I wrote some value under domain a.b.c:

NSUserDefaults *defaults = [[NSUserDefaults alloc] initWithSuiteName:@"a.b.c"];
[defaults setObject:@"fffff" forKey:@"bbbbb"];
[defaults synchronize];

This process is in fact installer plugin that runs from installer.app and has the following entitlements (no sandbox) :

codesign -d --entitlements :- /System/Library/CoreServices/Installer.app
-->
Executable=/System/Library/CoreServices/Installer.app/Contents/MacOS/Installer
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>com.apple.private.tcc.allow-prompting</key>
    <array>
        <string>kTCCServiceAll</string>
    </array>
    <key>com.apple.security.cs.disable-library-validation</key>
    <true/>
</dict>
</plist>

And expected this value to be visible from the terminal using defaults read. But unfortunately, it doesn't shown up even though both processes are running under the same user.

Here's the output from terminal :

defaults read a.b.c
2020-09-15 14:56:58.245 defaults[23380:360050] 
Domain a.b.c does not exist

Any Idea what I'm missing here ? Thanks.

Upvotes: 3

Views: 135

Answers (1)

Mingxian Zhao
Mingxian Zhao

Reputation: 31

I am a novice, I don't know what you mean by "processes".

(Perhaps two programs, Xcode executes one, terminal executes one).

But I know that "NSUserdefaults" stores data in a sandbox.

There is no sandbox for terminal programs, and the sandbox for each program is separate.

Upvotes: 1

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