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sftp: add --sftp-host-key-algorithms to allow specifying SSH host key algorithms

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Joel 2023-03-30 18:00:54 +01:00 committed by GitHub
parent 4d7b6e14b8
commit f4c787ab74
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1 changed files with 19 additions and 0 deletions
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19
backend/sftp/sftp.go
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@ -368,6 +368,20 @@ At least one must match with server configuration. This can be checked for examp
Example:
umac-64-etm@openssh.com umac-128-etm@openssh.com hmac-sha2-256-etm@openssh.com
`,
Advanced: true,
}, {
Name: "host_key_algorithms",
Default: fs.SpaceSepList{},
Help: `Space separated list of host key algorithms, ordered by preference.
At least one must match with server configuration. This can be checked for example using ssh -Q HostKeyAlgorithms.
Note: This can affect the outcome of key negotiation with the server even if server host key validation is not enabled.
Example:
ssh-ed25519 ssh-rsa ssh-dss
`,
Advanced: true,
}},
@ -408,6 +422,7 @@ type Options struct {
Ciphers fs.SpaceSepList `config:"ciphers"`
KeyExchange fs.SpaceSepList `config:"key_exchange"`
MACs fs.SpaceSepList `config:"macs"`
HostKeyAlgorithms fs.SpaceSepList `config:"host_key_algorithms"`
}
// Fs stores the interface to the remote SFTP files
@ -740,6 +755,10 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
ClientVersion: "SSH-2.0-" + f.ci.UserAgent,
}
if len(opt.HostKeyAlgorithms) != 0 {
sshConfig.HostKeyAlgorithms = []string(opt.HostKeyAlgorithms)
}
if opt.KnownHostsFile != "" {
hostcallback, err := knownhosts.New(env.ShellExpand(opt.KnownHostsFile))
if err != nil {