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webapp: Fix bug when setting up a remote ssh repo repeatedly on the same server.

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The ssh setup first runs ssh to the real hostname, to probe if a ssh key is
needed. If one is, it generates a mangled hostname that uses a key. This
mangled hostname was being used to ssh into the server to set up the key.
But if the server already had the key set up, and it was locked down, the
setup would fail. This changes it to use the real hostname when sshing in
to set up the key, which avoids the problem.

Note that it will redundantly set up the key on the ssh server. But it's
the same key; the ssh key generation code uses the key if it already
exists.
This commit is contained in:
Joey Hess 2013-06-25 14:46:20 -04:00
parent 4b3abb35f8
commit 10072157cb
2 changed files with 8 additions and 6 deletions
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12
Assistant/WebApp/Configurators/Ssh.hs
View file

@ -284,18 +284,18 @@ makeSsh rsync setup sshdata
| needsPubKey sshdata = do
keypair <- liftIO genSshKeyPair
sshdata' <- liftIO $ setupSshKeyPair keypair sshdata
makeSsh' rsync setup sshdata' (Just keypair)
makeSsh' rsync setup sshdata sshdata' (Just keypair)
| sshPort sshdata /= 22 = do
sshdata' <- liftIO $ setSshConfig sshdata []
makeSsh' rsync setup sshdata' Nothing
| otherwise = makeSsh' rsync setup sshdata Nothing
makeSsh' rsync setup sshdata sshdata' Nothing
| otherwise = makeSsh' rsync setup sshdata sshdata Nothing
makeSsh' :: Bool -> (Remote -> Handler ()) -> SshData -> Maybe SshKeyPair -> Handler RepHtml
makeSsh' rsync setup sshdata keypair =
makeSsh' :: Bool -> (Remote -> Handler ()) -> SshData -> SshData -> Maybe SshKeyPair -> Handler RepHtml
makeSsh' rsync setup origsshdata sshdata keypair = do
sshSetup [sshhost, remoteCommand] "" $
makeSshRepo rsync setup sshdata
where
sshhost = genSshHost (sshHostName sshdata) (sshUserName sshdata)
sshhost = genSshHost (sshHostName origsshdata) (sshUserName origsshdata)
remotedir = T.unpack $ sshDirectory sshdata
remoteCommand = shellWrap $ intercalate "&&" $ catMaybes
[ Just $ "mkdir -p " ++ shellEscape remotedir

2
debian/changelog vendored
View file

@ -5,6 +5,8 @@ git-annex (4.20130622) UNRELEASED; urgency=low
* bup: Handle /~/ in bup remote paths.
Thanks, Oliver Matthews
* fsck: Ensures that direct mode is used for files when it's enabled.
* webapp: Fix bug when setting up a remote ssh repo repeatedly on the same
server.
-- Joey Hess <joeyh@debian.org> Fri, 21 Jun 2013 13:16:17 -0400