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support being run by ssh as ssh-askpass replacement

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To use, set GIT_ANNEX_SSHASKPASS to point to a fifo or regular file
(FIFO is better, avoids touching disk or multiple readers) that contains
the password. Then set SSH_ASKPASS=git-annex, and when ssh runs it, it will
tell ssh the password.

This is not yet used..
This commit is contained in:
Joey Hess 2014-04-29 18:08:10 -04:00
parent ac98853f05
commit 79cf404e75
3 changed files with 22 additions and 5 deletions
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2
doc/design/assistant/sshpassword.mdwn
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@ -41,7 +41,7 @@ which gets the password from the webapp, and outputs it to stdout.
Seems to call for the webapp and program to communicate over a local
socket (locked down so only user can access) or environment.
Environment is not as secure (easily snooped by root).
Local socket probably won't work on Windows.
Local socket probably won't work on Windows. Could just use a temp file.
Note that the webapp can probe to see if ssh needs a password, and can
prompt the user for it before running ssh and the ssh-askpass shim.