libgit2: use provided host to validate public key #288
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The callback from libgit2 only provides a hostname (without the port), but the `known_hosts` file indexes the public keys based on the full host (e.g. `[localhost]:123` for a host behind a specific port). As a result, it was unable to find the correct public key for the hostname when it was added to the `known_hosts` file with the port. To work around this, we add the user provided host that includes the port to the `PublicKeyAuth` strategy, and use this to find the right entry in the `known_hosts` file, after having validated that the hostname provided to the callback matches the hostname of the host provided by the user. Signed-off-by: Hidde Beydals <[email protected]>
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This was referenced Feb 11, 2021
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The callback from libgit2 only provides a hostname (without the port),
but the
known_hostsfile indexes the public keys based on the fullhost (e.g.
[localhost]:123for a host behind a specific port).As a result, it was unable to find the correct public key for the
hostname when it was added to the
known_hostsfile with the port.To work around this, we add the user provided host that includes the
port to the
PublicKeyAuthstrategy, and use this to find the rightentry in the
known_hostsfile, after having validated that thehostname provided to the callback matches the hostname of the host
provided by the user.
Fixes: #287