Michael Vogt
34f29079fd
With the new protocol upgrade support in varlinkctl client we can now do the equivalent for the server side. This commit adds a new `serve` verb that will serve any command that speaks stdin/stdout via varlink and its protocol upgrade feature. This is the "inetd for varlink". This is useful for various reasons: 1. Allows to e.g. provide a heavily sandboxed io.myorg.xz.Decompress varlink endpoint, c.f. xz CVE-2024-3094) 2. Allow sftp over varlink which is quite useful with the varlink-http-bridge (that has more flexible auth mechanism than plain sftp). 3. Makes testing the varlinkctl client protocol upgrade simpler. 4. Because we can.
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