What is the best way to retrieve a return string from an external program using XPCOM in Firefox?

Is there a way to execute an external program in XPCOM and retrieve the actual return string from it, instead of just the return code?

I have researched nsICommandLine, nsICommandLineHandler, nsICommandLineRunner, and nsIProcess but it seems like none of them provide more than the exit code. Is there a different method I should be using?

Answer №1

In Gecko, there are limited IPC capabilities available. Communication with the process can be done using TCP sockets while it is running. To retrieve information once the process is complete, writing to a file and having your Firefox extension access that file would be necessary.

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