mirror of
https://github.com/gravitational/teleport.git
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101 lines
2.3 KiB
Go
101 lines
2.3 KiB
Go
/*
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Copyright 2015 Gravitational, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package sshutils
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import (
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"github.com/gravitational/teleport"
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"github.com/gravitational/trace"
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)
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// EnvReqParams are parameters for env request
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type EnvReqParams struct {
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Name string
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Value string
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}
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// WinChangeReqParams specifies parameters for window changes
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type WinChangeReqParams struct {
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W uint32
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H uint32
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Wpx uint32
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Hpx uint32
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}
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// PTYReqParams specifies parameters for pty change window
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type PTYReqParams struct {
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Env string
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W uint32
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H uint32
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Wpx uint32
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Hpx uint32
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Modes string
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}
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// Check validates PTY parameters.
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func (p *PTYReqParams) Check() error {
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if p.W > maxSize || p.W < minSize {
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return trace.BadParameter("bad width: %v", p.W)
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}
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if p.H > maxSize || p.H < minSize {
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return trace.BadParameter("bad height: %v", p.H)
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}
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return nil
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}
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// CheckAndSetDefaults validates PTY parameters and ensures parameters
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// are within default values.
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func (p *PTYReqParams) CheckAndSetDefaults() error {
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if p.W > maxSize || p.W < minSize {
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p.W = teleport.DefaultTerminalWidth
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}
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if p.H > maxSize || p.H < minSize {
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p.H = teleport.DefaultTerminalHeight
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}
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return nil
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}
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// ExecReq specifies parameters for a "exec" request.
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type ExecReq struct {
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Command string
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}
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// SubsystemReq specifies the parameters for a "subsystem" request.
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type SubsystemReq struct {
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Name string
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}
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const (
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// SessionEnvVar is environment variable for SSH session
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SessionEnvVar = "TELEPORT_SESSION"
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// SetEnvReq sets environment requests
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SetEnvReq = "env"
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// WindowChangeReq is a request to change window
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WindowChangeReq = "window-change"
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// PTYReq is a request for PTY
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PTYReq = "pty-req"
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// AgentReq is ssh agent requesst
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AgentReq = "auth-agent-req@openssh.com"
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)
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const (
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minSize = 1
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maxSize = 4096
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)
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