Re: Broken executable-in-var (was: Announcing my new old repository)

On 1 August 2015 at 14:35, Bart van Strien <[email protected]> wrote:
> On 01/08/15 15:00, Thomas Leonard wrote:
>
> Presumably it can't find gpg for some reason. This might give a clue:
>
> $ 00install run -w'strace -f -e process'
> http://0install.net/2007/interfaces/FeedLint.xml
> http://0install.bartbes.com/love.xml
>
>
> So turns out this is related to a problem I had earlier, worked around and
> promptly forgot about. On my system the stubs generated by executable-in-var
> are broken. I first came across this when packaging kotlin
> (http://0install.bartbes.com/kotlin.xml), but apparently that's causing this
> gpg failure in feedlint, too.

Do you have any strange security policies in place (SELinux, etc)?

> Here's the contents on the generated 'ZEROINSTALL_GPG' file:
>
> #!/home/bartbes/.cache/0install.net/implementations/sha256new_YEPNC3CZ7CVC6ZJNS3PALMWAOKPHLKZP65KLLNICQ5HYFRDOKTNQ/files/0install
> runenv

What happens if you run this file directly? (it should run, but
complain "Environment variable 'zeroinstall_runenv_ZEROINSTALL_GPG'
not set")

> I never quite figured out why it doesn't work, but it doesn't. An error I
> saw whilst running kotlin either truncated the command in the message, or
> truncated the command trying to run it, so it may be related to the long
> file path.
>
> For JAVACMD, I manually changed the file to the following, after which it
> worked fine:
>
> #!/bin/sh
> exec
> /home/bartbes/.cache/0install.net/implementations/sha256new_YEPNC3CZ7CVC6ZJNS3PALMWAOKPHLKZP65KLLNICQ5HYFRDOKTNQ/files/0install
> runenv JAVACMD "$@"
>
>
> Maybe the script generation file should emit that instead? Possibly with a
> basename call, like this:
>
> #!/bin/sh
> exec
> /home/bartbes/.cache/0install.net/implementations/sha256new_YEPNC3CZ7CVC6ZJNS3PALMWAOKPHLKZP65KLLNICQ5HYFRDOKTNQ/files/0install
> runenv $(basename "$0") "$@"
>
>
> Which, as far as I can tell, is valid syntax in POSIX sh (and I tested this
> with bash4/bash3/zsh/dash), so it should be perfectly portable. I just
> replaced the ZEROINSTALL_GPG's file contents with what I just suggested and
> feedlint now works fine (and fails on a redirect instead...).



-- 
Dr Thomas Leonard        http://roscidus.com/blog/
GPG: DA98 25AE CAD0 8975 7CDA  BD8E 0713 3F96 CA74 D8BA

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