update package dependencies (#5463)
Signed-off-by: fsl <1171313930@qq.com> Signed-off-by: fsl <1171313930@qq.com>
This commit is contained in:
71
vendor/golang.org/x/crypto/ssh/server.go
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vendored
71
vendor/golang.org/x/crypto/ssh/server.go
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vendored
@@ -68,8 +68,16 @@ type ServerConfig struct {
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// NoClientAuth is true if clients are allowed to connect without
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// authenticating.
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// To determine NoClientAuth at runtime, set NoClientAuth to true
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// and the optional NoClientAuthCallback to a non-nil value.
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NoClientAuth bool
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// NoClientAuthCallback, if non-nil, is called when a user
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// attempts to authenticate with auth method "none".
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// NoClientAuth must also be set to true for this be used, or
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// this func is unused.
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NoClientAuthCallback func(ConnMetadata) (*Permissions, error)
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// MaxAuthTries specifies the maximum number of authentication attempts
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// permitted per connection. If set to a negative number, the number of
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// attempts are unlimited. If set to zero, the number of attempts are limited
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@@ -120,7 +128,7 @@ type ServerConfig struct {
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}
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// AddHostKey adds a private key as a host key. If an existing host
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// key exists with the same algorithm, it is overwritten. Each server
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// key exists with the same public key format, it is replaced. Each server
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// config must have at least one host key.
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func (s *ServerConfig) AddHostKey(key Signer) {
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for i, k := range s.hostKeys {
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@@ -212,9 +220,10 @@ func NewServerConn(c net.Conn, config *ServerConfig) (*ServerConn, <-chan NewCha
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}
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// signAndMarshal signs the data with the appropriate algorithm,
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// and serializes the result in SSH wire format.
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func signAndMarshal(k Signer, rand io.Reader, data []byte) ([]byte, error) {
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sig, err := k.Sign(rand, data)
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// and serializes the result in SSH wire format. algo is the negotiate
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// algorithm and may be a certificate type.
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func signAndMarshal(k AlgorithmSigner, rand io.Reader, data []byte, algo string) ([]byte, error) {
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sig, err := k.SignWithAlgorithm(rand, data, underlyingAlgo(algo))
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if err != nil {
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return nil, err
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}
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@@ -282,15 +291,6 @@ func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error)
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return perms, err
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}
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func isAcceptableAlgo(algo string) bool {
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switch algo {
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case KeyAlgoRSA, KeyAlgoDSA, KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521, KeyAlgoSKECDSA256, KeyAlgoED25519, KeyAlgoSKED25519,
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CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoSKECDSA256v01, CertAlgoED25519v01, CertAlgoSKED25519v01:
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return true
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}
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return false
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}
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func checkSourceAddress(addr net.Addr, sourceAddrs string) error {
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if addr == nil {
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return errors.New("ssh: no address known for client, but source-address match required")
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@@ -454,7 +454,11 @@ userAuthLoop:
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switch userAuthReq.Method {
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case "none":
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if config.NoClientAuth {
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authErr = nil
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if config.NoClientAuthCallback != nil {
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perms, authErr = config.NoClientAuthCallback(s)
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} else {
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authErr = nil
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}
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}
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// allow initial attempt of 'none' without penalty
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@@ -501,7 +505,7 @@ userAuthLoop:
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return nil, parseError(msgUserAuthRequest)
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}
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algo := string(algoBytes)
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if !isAcceptableAlgo(algo) {
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if !contains(supportedPubKeyAuthAlgos, underlyingAlgo(algo)) {
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authErr = fmt.Errorf("ssh: algorithm %q not accepted", algo)
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break
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}
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@@ -553,16 +557,22 @@ userAuthLoop:
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if !ok || len(payload) > 0 {
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return nil, parseError(msgUserAuthRequest)
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}
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// Ensure the public key algo and signature algo
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// are supported. Compare the private key
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// algorithm name that corresponds to algo with
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// sig.Format. This is usually the same, but
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// for certs, the names differ.
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if !isAcceptableAlgo(sig.Format) {
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if !contains(supportedPubKeyAuthAlgos, sig.Format) {
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authErr = fmt.Errorf("ssh: algorithm %q not accepted", sig.Format)
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break
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}
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signedData := buildDataSignedForAuth(sessionID, userAuthReq, algoBytes, pubKeyData)
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if underlyingAlgo(algo) != sig.Format {
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authErr = fmt.Errorf("ssh: signature %q not compatible with selected algorithm %q", sig.Format, algo)
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break
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}
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signedData := buildDataSignedForAuth(sessionID, userAuthReq, algo, pubKeyData)
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if err := pubKey.Verify(signedData, sig); err != nil {
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return nil, err
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@@ -633,6 +643,30 @@ userAuthLoop:
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}
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authFailures++
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if config.MaxAuthTries > 0 && authFailures >= config.MaxAuthTries {
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// If we have hit the max attempts, don't bother sending the
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// final SSH_MSG_USERAUTH_FAILURE message, since there are
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// no more authentication methods which can be attempted,
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// and this message may cause the client to re-attempt
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// authentication while we send the disconnect message.
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// Continue, and trigger the disconnect at the start of
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// the loop.
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//
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// The SSH specification is somewhat confusing about this,
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// RFC 4252 Section 5.1 requires each authentication failure
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// be responded to with a respective SSH_MSG_USERAUTH_FAILURE
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// message, but Section 4 says the server should disconnect
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// after some number of attempts, but it isn't explicit which
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// message should take precedence (i.e. should there be a failure
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// message than a disconnect message, or if we are going to
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// disconnect, should we only send that message.)
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//
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// Either way, OpenSSH disconnects immediately after the last
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// failed authnetication attempt, and given they are typically
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// considered the golden implementation it seems reasonable
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// to match that behavior.
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continue
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}
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var failureMsg userAuthFailureMsg
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if config.PasswordCallback != nil {
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@@ -670,7 +704,7 @@ type sshClientKeyboardInteractive struct {
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*connection
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}
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func (c *sshClientKeyboardInteractive) Challenge(user, instruction string, questions []string, echos []bool) (answers []string, err error) {
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func (c *sshClientKeyboardInteractive) Challenge(name, instruction string, questions []string, echos []bool) (answers []string, err error) {
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if len(questions) != len(echos) {
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return nil, errors.New("ssh: echos and questions must have equal length")
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}
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@@ -682,6 +716,7 @@ func (c *sshClientKeyboardInteractive) Challenge(user, instruction string, quest
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}
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if err := c.transport.writePacket(Marshal(&userAuthInfoRequestMsg{
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Name: name,
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Instruction: instruction,
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NumPrompts: uint32(len(questions)),
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Prompts: prompts,
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