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Retry SSH key verification with additional CRLF if it failed (#28392) #28464

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Merged
merged 1 commit into from
Dec 14, 2023
Merged

Retry SSH key verification with additional CRLF if it failed (#28392) #28464

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13 changes: 9 additions & 4 deletions models/asymkey/ssh_key_verify.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,10 +29,15 @@ func VerifySSHKey(ownerID int64, fingerprint, token, signature string) (string,
return "", ErrKeyNotExist{}
}

if err := sshsig.Verify(bytes.NewBuffer([]byte(token)), []byte(signature), []byte(key.Content), "gitea"); err != nil {
log.Error("Unable to validate token signature. Error: %v", err)
return "", ErrSSHInvalidTokenSignature{
Fingerprint: key.Fingerprint,
err = sshsig.Verify(bytes.NewBuffer([]byte(token)), []byte(signature), []byte(key.Content), "gitea")
if err != nil {
// edge case for Windows based shells that will add CR LF if piped to ssh-keygen command
// see https://github.com/PowerShell/PowerShell/issues/5974
if sshsig.Verify(bytes.NewBuffer([]byte(token+"\r\n")), []byte(signature), []byte(key.Content), "gitea") != nil {
log.Error("Unable to validate token signature. Error: %v", err)
return "", ErrSSHInvalidTokenSignature{
Fingerprint: key.Fingerprint,
}
}
}

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