web

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 Go to latest Published: Feb 19, 2021 License: Apache-2.0 Imports: 57 Imported by: 0

Documentation

Overview

Package web implements web proxy handler that provides web interface to view and connect to teleport nodes

Index

Constants

View Source 
const (
	// CookieName is the name of the session cookie.
	CookieName = "__Host-session"
)

Variables

This section is empty.

Functions

func ClearSession added in v1.0.0 

func ClearSession(w http.ResponseWriter)

func ConstructSSHResponse added in v1.0.0 

func ConstructSSHResponse(response AuthParams) (*url.URL, error)

ConstructSSHResponse creates a special SSH response for SSH login method that encodes everything using the client's secret key

func EncodeCookie 

func EncodeCookie(user, sid string) (string, error)

func NewStaticFileSystem added in v1.2.6 

func NewStaticFileSystem(debugMode bool) (http.FileSystem, error)

NewStaticFileSystem returns the initialized implementation of http.FileSystem interface which can be used to serve Teleport Proxy Web UI

If 'debugMode' is true, it will load the web assets from the same git repo directory where the executable is, otherwise it will load them from the embedded zip archive.

func SetPlugin 

func SetPlugin(p Plugin)

SetPlugin sets plugin for the web handler

func SetSession added in v1.0.0 

func SetSession(w http.ResponseWriter, user, sid string) error

Types

type AuthParams 

type AuthParams struct {
	// Username is authenticated teleport username
	Username string
	// Identity contains validated OIDC identity
	Identity services.ExternalIdentity
	// Web session will be generated by auth server if requested in OIDCAuthRequest
	Session services.WebSession
	// Cert will be generated by certificate authority
	Cert []byte
	// TLSCert is PEM encoded TLS certificate
	TLSCert []byte
	// HostSigners is a list of signing host public keys
	// trusted by proxy, used in console login
	HostSigners []services.CertAuthority
	// ClientRedirectURL is a URL to redirect client to
	ClientRedirectURL string
	// FIPS mode means Teleport started in a FedRAMP/FIPS 140-2 compliant
	// configuration.
	FIPS bool
}

AuthParams are used to construct redirect URL containing auth information back to tsh login

type AuthProvider 

type AuthProvider interface {
	GetNodes(namespace string, opts ...services.MarshalOption) ([]services.Server, error)
	GetSessionEvents(namespace string, sid session.ID, after int, includePrintEvents bool) ([]events.EventFields, error)
}

AuthProvider is a subset of the full Auth API.

type ClusterHandler 

type ClusterHandler func(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *SessionContext, site reversetunnel.RemoteSite) (interface{}, error)

ClusterHandler is a authenticated handler that is called for some existing remote cluster

type Config added in v1.0.0 

type Config struct {
	// Proxy is a reverse tunnel proxy that handles connections
	// to various sites
	Proxy reversetunnel.Server
	// AuthServers is a list of auth servers this proxy talks to
	AuthServers utils.NetAddr
	// DomainName is a domain name served by web handler
	DomainName string
	// ProxyClient is a client that authenticated as proxy
	ProxyClient auth.ClientI
	// DisableUI allows to turn off serving web based UI
	DisableUI bool
	// ProxySSHAddr points to the SSH address of the proxy
	ProxySSHAddr utils.NetAddr
	// ProxyWebAddr points to the web (HTTPS) address of the proxy
	ProxyWebAddr utils.NetAddr

	// CipherSuites is the list of cipher suites Teleport suppports.
	CipherSuites []uint16

	// ProxySettings is a settings communicated to proxy
	ProxySettings client.ProxySettings

	// FIPS mode means Teleport started in a FedRAMP/FIPS 140-2 compliant
	// configuration.
	FIPS bool
}

Config represents web handler configuration parameters

type ContextHandler 

type ContextHandler func(w http.ResponseWriter, r *http.Request, p httprouter.Params, ctx *SessionContext) (interface{}, error)

ContextHandler is a handler called with the auth context, what means it is authenticated and ready to work

type CreateSessionResponse added in v1.0.0 

type CreateSessionResponse struct {
	// Type is token type (bearer)
	Type string `json:"type"`
	// Token value
	Token string `json:"token"`
	// ExpiresIn sets seconds before this token is not valid
	ExpiresIn int `json:"expires_in"`
}

CreateSessionResponse returns OAuth compabible data about access token: https://tools.ietf.org/html/rfc6749

func NewSessionResponse added in v1.0.0 

func NewSessionResponse(ctx *SessionContext) (*CreateSessionResponse, error)

type Envelope 

type Envelope struct {
	// Version is the version of the protocol.
	Version string `protobuf:"bytes,1,opt,name=Version" json:"Version,omitempty"`
	// Type is the type of message. For version 1 of the protocol this must
	// not be longer than 1 character.
	Type string `protobuf:"bytes,2,opt,name=Type" json:"Type,omitempty"`
	// Payload is the actual data to send.
	Payload              string   `protobuf:"bytes,3,opt,name=Payload" json:"Payload,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

Envelope is used to wrap and transend and receive messages between the web client and proxy.

func (*Envelope) Descriptor 

func (*Envelope) Descriptor() ([]byte, []int)

func (*Envelope) GetPayload 

func (m *Envelope) GetPayload() string

func (*Envelope) GetType 

func (m *Envelope) GetType() string

func (*Envelope) GetVersion 

func (m *Envelope) GetVersion() string

func (*Envelope) ProtoMessage 

func (*Envelope) ProtoMessage()

func (*Envelope) Reset 

func (m *Envelope) Reset()

func (*Envelope) String 

func (m *Envelope) String() string

func (*Envelope) XXX_DiscardUnknown 

func (m *Envelope) XXX_DiscardUnknown()

func (*Envelope) XXX_Marshal 

func (m *Envelope) XXX_Marshal(b []byte, deterministic bool) ([]byte, error)

func (*Envelope) XXX_Merge 

func (dst *Envelope) XXX_Merge(src proto.Message)

func (*Envelope) XXX_Size 

func (m *Envelope) XXX_Size() int

func (*Envelope) XXX_Unmarshal 

func (m *Envelope) XXX_Unmarshal(b []byte) error

type Handler added in v1.0.0 

type Handler struct {
	sync.Mutex
	httprouter.Router
	// contains filtered or unexported fields
}

Handler is HTTP web proxy handler

func (*Handler) AuthenticateRequest added in v1.0.0 

func (h *Handler) AuthenticateRequest(w http.ResponseWriter, r *http.Request, checkBearerToken bool) (*SessionContext, error)

AuthenticateRequest authenticates request using combination of a session cookie and bearer token

func (*Handler) Close added in v1.0.0 

func (h *Handler) Close() error

Close closes associated session cache operations

func (*Handler) GetProxyClient 

func (h *Handler) GetProxyClient() auth.ClientI

GetProxyClient returns authenticated auth server client

func (*Handler) ProxyHostPort 

func (h *Handler) ProxyHostPort() string

ProxyHostPort returns the address of the proxy server using --proxy notation, i.e. "localhost:8030,8023"

func (*Handler) String added in v1.0.0 

func (h *Handler) String() string

func (*Handler) WithAuth 

func (h *Handler) WithAuth(fn ContextHandler) httprouter.Handle

WithAuth ensures that request is authenticated

func (*Handler) WithClusterAuth 

func (h *Handler) WithClusterAuth(fn ClusterHandler) httprouter.Handle

WithClusterAuth ensures that request is authenticated and is issued for existing cluster

type HandlerOption added in v1.0.0 

type HandlerOption func(h *Handler) error

HandlerOption is a functional argument - an option that can be passed to NewHandler function

func SetSessionStreamPollPeriod added in v1.0.0 

func SetSessionStreamPollPeriod(period time.Duration) HandlerOption

SetSessionStreamPollPeriod sets polling period for session streams

type Plugin 

type Plugin interface {
	// AddHandlers adds handlers to the web API handler
	AddHandlers(h *Handler)
}

Plugin is API Server extension setter if set, it will add handler methods during web handler initialization

func GetPlugin 

func GetPlugin() Plugin

GetPlugin returns web API plugin that

type ResourceMap added in v1.2.6 

type ResourceMap map[string]*zip.File

func (ResourceMap) Open added in v1.2.6 

func (rm ResourceMap) Open(name string) (http.File, error)

type RewritingHandler 

type RewritingHandler struct {
	http.Handler
	// contains filtered or unexported fields
}

func NewHandler added in v1.0.0 

func NewHandler(cfg Config, opts ...HandlerOption) (*RewritingHandler, error)

NewHandler returns a new instance of web proxy handler

func (*RewritingHandler) Close 

func (r *RewritingHandler) Close() error

type SessionContext added in v1.0.0 

type SessionContext struct {
	sync.Mutex
	*log.Entry
	// contains filtered or unexported fields
}

SessionContext is a context associated with users' web session, it stores connected client that persists between requests for example to avoid connecting to the auth server on every page hit

func (*SessionContext) AddClosers added in v1.0.0 

func (c *SessionContext) AddClosers(closers ...io.Closer)

func (*SessionContext) ClientTLSConfig 

func (c *SessionContext) ClientTLSConfig(clusterName ...string) (*tls.Config, error)

ClientTLSConfig returns client TLS authentication associated with the web session context

func (*SessionContext) Close added in v1.0.0 

func (c *SessionContext) Close() error

Close cleans up connections associated with requests

func (*SessionContext) ExtendWebSession added in v1.0.0 

func (c *SessionContext) ExtendWebSession() (services.WebSession, error)

ExtendWebSession creates a new web session for this user based on the previous session

func (*SessionContext) GetAgent added in v1.0.0 

func (c *SessionContext) GetAgent() (agent.Agent, *ssh.Certificate, error)

GetAgent returns agent that can be used to answer challenges for the web to ssh connection as well as certificate

func (*SessionContext) GetCertRoles 

func (c *SessionContext) GetCertRoles() (services.RoleSet, error)

GetCertRoles extracts roles from the *ssh.Certificate associated with this session.

func (*SessionContext) GetClient added in v1.0.0 

func (c *SessionContext) GetClient() (auth.ClientI, error)

GetClient returns the client connected to the auth server

func (*SessionContext) GetSSHCertificate 

func (c *SessionContext) GetSSHCertificate() (*ssh.Certificate, error)

GetSSHCertificate returns the *ssh.Certificate associated with this session.

func (*SessionContext) GetUser added in v1.0.0 

func (c *SessionContext) GetUser() string

GetUser returns the authenticated teleport user

func (*SessionContext) GetUserClient 

func (c *SessionContext) GetUserClient(site reversetunnel.RemoteSite) (auth.ClientI, error)

GetUserClient will return an auth.ClientI with the role of the user at the requested site. If the site is local a client with the users local role is returned. If the site is remote a client with the users remote role is returned.

func (*SessionContext) GetWebSession added in v1.0.0 

func (c *SessionContext) GetWebSession() services.WebSession

GetWebSession returns a web session

func (*SessionContext) GetX509Certificate 

func (c *SessionContext) GetX509Certificate() (*x509.Certificate, error)

GetX509Certificate returns the *x509.Certificate associated with this session.

func (*SessionContext) Invalidate added in v1.0.0 

func (c *SessionContext) Invalidate() error

func (*SessionContext) RemoveCloser 

func (c *SessionContext) RemoveCloser(closer io.Closer)

func (*SessionContext) TransferClosers added in v1.0.0 

func (c *SessionContext) TransferClosers() []io.Closer

type SessionCookie added in v1.0.0 

type SessionCookie struct {
	User string `json:"user"`
	SID  string `json:"sid"`
}

SessionCookie stores information about active user and session

func DecodeCookie 

func DecodeCookie(b string) (*SessionCookie, error)

type TerminalHandler 

type TerminalHandler struct {
	// contains filtered or unexported fields
}

TerminalHandler connects together an SSH session with a web-based terminal via a web socket.

func NewTerminal 

func NewTerminal(req TerminalRequest, authProvider AuthProvider, ctx *SessionContext) (*TerminalHandler, error)

NewTerminal creates a web-based terminal based on WebSockets and returns a new TerminalHandler.

func (*TerminalHandler) Close 

func (t *TerminalHandler) Close() error

Close the websocket stream.

func (*TerminalHandler) Serve 

func (t *TerminalHandler) Serve(w http.ResponseWriter, r *http.Request)

Serve builds a connect to the remote node and then pumps back two types of events: raw input/output events for what's happening on the terminal itself and audit log events relevant to this session.

type TerminalRequest 

type TerminalRequest struct {
	// Server describes a server to connect to (serverId|hostname[:port]).
	Server string `json:"server_id"`

	// Login is Linux username to connect as.
	Login string `json:"login"`

	// Term is the initial PTY size.
	Term session.TerminalParams `json:"term"`

	// SessionID is a Teleport session ID to join as.
	SessionID session.ID `json:"sid"`

	// Namespace is node namespace.
	Namespace string `json:"namespace"`

	// ProxyHostPort is the address of the server to connect to.
	ProxyHostPort string `json:"-"`

	// Cluster is the name of the remote cluster to connect to.
	Cluster string `json:"-"`

	// InteractiveCommand is a command to execut.e
	InteractiveCommand []string `json:"-"`

	// KeepAliveInterval is the interval for sending ping frames to web client.
	KeepAliveInterval time.Duration
}

TerminalRequest describes a request to create a web-based terminal to a remote SSH server.

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