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sftp: Allow password entry

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This was a bit tricky: We start the ssh binary, but we want it to ignore
SIGINT. In contrast, restic itself should process SIGINT and clean up
properly. Before, we used `setsid()` to give the ssh process its own
process group, but that means it cannot prompt the user for a password
because the tty is gone.

So, now we're passing in two functions that ignore SIGINT just before
the ssh process is started and re-install it after start.
This commit is contained in:
Alexander Neumann 2017-09-23 11:21:27 +02:00
parent 45a09c76ff
commit fb9729fdb9
6 changed files with 24 additions and 41 deletions
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4
internal/backend/sftp/sftp_test.go
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@ -51,13 +51,13 @@ func newTestSuite(t testing.TB) *test.Suite {
// CreateFn is a function that creates a temporary repository for the tests.
Create: func(config interface{}) (restic.Backend, error) {
cfg := config.(sftp.Config)
return sftp.Create(cfg)
return sftp.Create(cfg, nil, nil)
},
// OpenFn is a function that opens a previously created temporary repository.
Open: func(config interface{}) (restic.Backend, error) {
cfg := config.(sftp.Config)
return sftp.Open(cfg)
return sftp.Open(cfg, nil, nil)
},
// CleanupFn removes data created during the tests.