When automatically processing files, i found that gnupg has an endless loop
from stdin expecting something but no matter what you enter, it will never quit.
1. using -verify
gpg --no-options --batch --status-fd 2 --yes --output out.out --verify in.in.asc
gpg: no signed data
gpg: can't hash datafile: file open error
this is fine, gpg exits, and returns an error (i need to supply the signed data
file)
2. using -decrypt without batch on detached signature file
gpg --no-options --status-fd 2 --yes --output out.out --decrypt in.in.asc
Detached signature.
Please enter name of data file: <file>
No such file, try again or hit enter to quit.
OK i should enter something and can quit with <enter>.
3. now using -decrypt with batch on detached signature file
gpg --no-options --status-fd 2 --batch --yes --output out.out --decrypt
in.in.asc
i can enter what i want - gnupg will never quit - adding --debug-all or -v
doesnt reveal anything, only control c will quit - but this doesnt help in a
batch processing cronjob or similar.
I know that --decrypt is not suited for detached signature files but im talking
about batch processing here and i dont have control what files are were - at
the very least GPG should quit with an error because of --status-fd 2.
According to DETAILS.txt this would be the best case for
UNEXPECTED <what>
Unexpected data has been encountered
0 - not further specified 1
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