wide/shell/shells.go

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package shell
import (
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"github.com/b3log/wide/conf"
"github.com/b3log/wide/session"
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"github.com/golang/glog"
"github.com/gorilla/websocket"
"net/http"
"os"
"os/exec"
"strings"
)
var shellWS = map[string]*websocket.Conn{}
func WSHandler(w http.ResponseWriter, r *http.Request) {
session, _ := session.Store.Get(r, "wide-session")
sid := session.Values["id"].(string)
shellWS[sid], _ = websocket.Upgrade(w, r, nil, 1024, 1024)
ret := map[string]interface{}{"output": "Shell initialized", "cmd": "init-shell"}
shellWS[sid].WriteJSON(&ret)
glog.Infof("Open a new [Shell] with session [%s], %d", sid, len(shellWS))
input := map[string]interface{}{}
for {
if err := shellWS[sid].ReadJSON(&input); err != nil {
if err.Error() == "EOF" {
return
}
if err.Error() == "unexpected EOF" {
return
}
glog.Error("Shell WS ERROR: " + err.Error())
return
}
inputCmd := input["cmd"].(string)
cmds := strings.Split(inputCmd, "|")
commands := []*exec.Cmd{}
for _, cmdWithArgs := range cmds {
cmdWithArgs = strings.TrimSpace(cmdWithArgs)
cmdWithArgs := strings.Split(cmdWithArgs, " ")
args := []string{}
if len(cmdWithArgs) > 1 {
args = cmdWithArgs[1:]
}
cmd := exec.Command(cmdWithArgs[0], args...)
commands = append(commands, cmd)
}
output := ""
if !strings.Contains(inputCmd, "clear") {
output = pipeCommands(commands...)
}
ret = map[string]interface{}{"output": output, "cmd": "shell-output"}
if err := shellWS[sid].WriteJSON(&ret); err != nil {
glog.Error("Shell WS ERROR: " + err.Error())
return
}
}
}
func pipeCommands(commands ...*exec.Cmd) string {
for i, command := range commands[:len(commands)-1] {
setCmdEnv(command)
out, err := command.StdoutPipe()
if nil != err {
return err.Error()
}
command.Start()
commands[i+1].Stdin = out
}
last := commands[len(commands)-1]
setCmdEnv(last)
out, err := last.Output()
if err != nil {
return err.Error()
}
return string(out)
}
func setCmdEnv(cmd *exec.Cmd) {
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// TODO: 使用用户自己的仓库路径设置 GOPATH
cmd.Env = append(cmd.Env, "TERM=xterm", "GOPATH="+conf.Wide.Repos,
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"GOROOT="+os.Getenv("GOROOT"))
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cmd.Dir = conf.Wide.Repos
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}