terraform/vendor/github.com/dylanmei/winrmtest/wsman.go

171 lines
4.0 KiB
Go

package winrmtest
import (
"bytes"
"encoding/base64"
"fmt"
"net/http"
"strconv"
"strings"
"github.com/masterzen/winrm/soap"
"github.com/masterzen/xmlpath"
"github.com/satori/go.uuid"
)
type wsman struct {
commands []*command
identitySeed int
}
type command struct {
id string
matcher MatcherFunc
handler CommandFunc
}
func (w *wsman) HandleCommand(m MatcherFunc, f CommandFunc) string {
id := uuid.NewV4().String()
w.commands = append(w.commands, &command{
id: id,
matcher: m,
handler: f,
})
return id
}
func (w *wsman) CommandByText(cmd string) *command {
for _, c := range w.commands {
if c.matcher(cmd) {
return c
}
}
return nil
}
func (w *wsman) CommandByID(id string) *command {
for _, c := range w.commands {
if c.id == id {
return c
}
}
return nil
}
func (w *wsman) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
rw.Header().Add("Content-Type", "application/soap+xml")
defer r.Body.Close()
env, err := xmlpath.Parse(r.Body)
if err != nil {
return
}
action := readAction(env)
switch {
case strings.HasSuffix(action, "transfer/Create"):
// create a new shell
rw.Write([]byte(`
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:rsp="http://schemas.microsoft.com/wbem/wsman/1/windows/shell">
<rsp:ShellId>123</rsp:ShellId>
</env:Envelope>`))
case strings.HasSuffix(action, "shell/Command"):
// execute on behalf of the client
text := readCommand(env)
cmd := w.CommandByText(text)
if cmd == nil {
fmt.Printf("I don't know this command: Command=%s\n", text)
rw.WriteHeader(http.StatusInternalServerError)
return
}
rw.Write([]byte(fmt.Sprintf(`
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:rsp="http://schemas.microsoft.com/wbem/wsman/1/windows/shell">
<rsp:CommandId>%s</rsp:CommandId>
</env:Envelope>`, cmd.id)))
case strings.HasSuffix(action, "shell/Receive"):
// client ready to receive the results
id := readCommandIDFromDesiredStream(env)
cmd := w.CommandByID(id)
if cmd == nil {
fmt.Printf("I don't know this command: CommandId=%s\n", id)
rw.WriteHeader(http.StatusInternalServerError)
return
}
stdout := new(bytes.Buffer)
stderr := new(bytes.Buffer)
result := cmd.handler(stdout, stderr)
content := base64.StdEncoding.EncodeToString(stdout.Bytes())
rw.Write([]byte(fmt.Sprintf(`
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope" xmlns:rsp="http://schemas.microsoft.com/wbem/wsman/1/windows/shell">
<rsp:ReceiveResponse>
<rsp:Stream Name="stdout" CommandId="%s">%s</rsp:Stream>
<rsp:Stream Name="stdout" CommandId="%s" End="true"></rsp:Stream>
<rsp:Stream Name="stderr" CommandId="%s" End="true"></rsp:Stream>
<rsp:CommandState State="http://schemas.microsoft.com/wbem/wsman/1/windows/shell/CommandState/Done">
<rsp:ExitCode>%d</rsp:ExitCode>
</rsp:CommandState>
</rsp:ReceiveResponse>
</env:Envelope>`, id, content, id, id, result)))
case strings.HasSuffix(action, "shell/Signal"):
// end of the shell command
rw.WriteHeader(http.StatusOK)
case strings.HasSuffix(action, "transfer/Delete"):
// end of the session
rw.WriteHeader(http.StatusOK)
default:
fmt.Printf("I don't know this action: %s\n", action)
rw.WriteHeader(http.StatusInternalServerError)
}
}
func readAction(env *xmlpath.Node) string {
xpath, err := xmlpath.CompileWithNamespace(
"//a:Action", soap.GetAllNamespaces())
if err != nil {
return ""
}
action, _ := xpath.String(env)
return action
}
func readCommand(env *xmlpath.Node) string {
xpath, err := xmlpath.CompileWithNamespace(
"//rsp:Command", soap.GetAllNamespaces())
if err != nil {
return ""
}
command, _ := xpath.String(env)
if unquoted, err := strconv.Unquote(command); err == nil {
return unquoted
}
return command
}
func readCommandIDFromDesiredStream(env *xmlpath.Node) string {
xpath, err := xmlpath.CompileWithNamespace(
"//rsp:DesiredStream/@CommandId", soap.GetAllNamespaces())
if err != nil {
return ""
}
id, _ := xpath.String(env)
return id
}