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has a websocket shell now!
This commit is contained in:
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aa283ec188
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@ -31,7 +31,7 @@ function createTerminal() {
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});
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term.open(document.getElementById('terminal_view'));
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term.resize(120, 36);
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term.resize(122, 37);
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const weblinksAddon = new WebLinksAddon.WebLinksAddon();
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term.loadAddon(weblinksAddon);
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4
go.mod
4
go.mod
@ -3,6 +3,7 @@ module github.com/syssecfsu/wsterm
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go 1.17
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require (
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github.com/creack/pty v1.1.17 // indirect
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github.com/gin-contrib/sse v0.1.0 // indirect
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github.com/gin-gonic/gin v1.7.7 // indirect
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github.com/go-playground/locales v0.13.0 // indirect
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@ -17,6 +18,7 @@ require (
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github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
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github.com/ugorji/go/codec v1.1.7 // indirect
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golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 // indirect
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golang.org/x/sys v0.0.0-20200116001909-b77594299b42 // indirect
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
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gopkg.in/yaml.v2 v2.2.8 // indirect
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)
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6
go.sum
6
go.sum
@ -1,3 +1,5 @@
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github.com/creack/pty v1.1.17 h1:QeVUsEDNrLBW4tMgZHvxy18sKtr6VI492kBhUfhDJNI=
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github.com/creack/pty v1.1.17/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
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@ -42,6 +44,10 @@ golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5h
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golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20200116001909-b77594299b42 h1:vEOn+mP2zCOVzKckCZy6YsCtDblrpj/w7B9nxGNELpg=
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golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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82
main.go
82
main.go
@ -8,8 +8,45 @@ import (
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"github.com/gin-gonic/gin"
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"github.com/gorilla/websocket"
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"os"
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"os/exec"
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"github.com/creack/pty"
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"golang.org/x/term"
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)
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func createPty(cmdline string) (*os.File, *term.State, error) {
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// Create a shell command.
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cmd := exec.Command(cmdline)
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// Start the command with a pty.
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ptmx, err := pty.Start(cmd)
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if err != nil {
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return nil, nil, err
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}
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// Use fixed size, the xterm is initalized as 122x37,
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// But we set pty to 120x36. Using fullsize will lead
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// some program to misbehaive.
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pty.Setsize(ptmx, &pty.Winsize{
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Cols: 120,
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Rows: 36,
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})
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// Set stdin in raw mode. This might cause problems in ssh.
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// ignore the error if it so happens
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termState, err := term.MakeRaw(int(os.Stdin.Fd()))
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if err != nil {
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fmt.Println(err)
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return ptmx, nil, err
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}
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return ptmx, termState, nil
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}
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var host *string = nil
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var upgrader = websocket.Upgrader{
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@ -42,15 +79,56 @@ func wsHandler(w http.ResponseWriter, r *http.Request) {
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fmt.Println("Created the websocket")
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ptmx, termState, err := createPty("bash")
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defer func() {
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//close the terminal and restore the terminal state
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if termState != nil {
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term.Restore(int(os.Stdin.Fd()), termState)
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}
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}()
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if err != nil {
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fmt.Println("failed to create PTY", err)
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return
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}
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// pipe the msgs from WS to pty, we need to use goroutine here
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go func() {
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for {
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_, buf, err := conn.ReadMessage()
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if err != nil {
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fmt.Println(err)
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// We need to close pty so the goroutine and this one can end
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// using defer will cause problems
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ptmx.Close()
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return
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}
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_, err = ptmx.Write(buf)
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if err != nil {
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fmt.Println(err)
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ptmx.Close()
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return
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}
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}
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}()
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readBuf := make([]byte, 4096)
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for {
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msgType, p, err := conn.ReadMessage()
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n, err := ptmx.Read(readBuf)
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if err != nil {
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fmt.Println(err)
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ptmx.Close()
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return
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}
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if err := conn.WriteMessage(msgType, p); err != nil {
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if err = conn.WriteMessage(websocket.BinaryMessage, readBuf[:n]); err != nil {
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ptmx.Close()
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fmt.Println(err)
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return
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}
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