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Retry SSH key verification with additional CRLF if it failed (#28392)
Windows-based shells will add a CRLF when piping the token into ssh-keygen command resulting in verification error. This resolves #21527. --------- Co-authored-by: Heiko Besemann <heiko.besemann@qbeyond.de> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
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@ -30,10 +30,15 @@ func VerifySSHKey(ctx context.Context, ownerID int64, fingerprint, token, signat
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return "", ErrKeyNotExist{}
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return "", ErrKeyNotExist{}
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}
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}
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if err := sshsig.Verify(bytes.NewBuffer([]byte(token)), []byte(signature), []byte(key.Content), "gitea"); err != nil {
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err = sshsig.Verify(bytes.NewBuffer([]byte(token)), []byte(signature), []byte(key.Content), "gitea")
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log.Error("Unable to validate token signature. Error: %v", err)
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if err != nil {
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return "", ErrSSHInvalidTokenSignature{
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// edge case for Windows based shells that will add CR LF if piped to ssh-keygen command
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Fingerprint: key.Fingerprint,
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// see https://github.com/PowerShell/PowerShell/issues/5974
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if sshsig.Verify(bytes.NewBuffer([]byte(token+"\r\n")), []byte(signature), []byte(key.Content), "gitea") != nil {
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log.Error("Unable to validate token signature. Error: %v", err)
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return "", ErrSSHInvalidTokenSignature{
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Fingerprint: key.Fingerprint,
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}
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}
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}
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}
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}
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