From 97ca1f277dc8b6973d6fa67add5593a9c395ce60 Mon Sep 17 00:00:00 2001
From: Sebastien Douheret <sebastien.douheret@iot.bzh>
Date: Mon, 25 Sep 2017 14:15:16 +0200
Subject: Added webapp Dashboard + logic to interact with server.

Signed-off-by: Sebastien Douheret <sebastien.douheret@iot.bzh>
---
 lib/agent/apiv1-exec.go | 99 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 lib/agent/apiv1-exec.go

(limited to 'lib/agent/apiv1-exec.go')

diff --git a/lib/agent/apiv1-exec.go b/lib/agent/apiv1-exec.go
new file mode 100644
index 0000000..83ec7aa
--- /dev/null
+++ b/lib/agent/apiv1-exec.go
@@ -0,0 +1,99 @@
+package agent
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	common "github.com/iotbzh/xds-common/golib"
+)
+
+// Only define useful fields
+type ExecArgs struct {
+	ID string `json:"id" binding:"required"`
+}
+
+// ExecCmd executes remotely a command
+func (s *APIService) execCmd(c *gin.Context) {
+	s._execRequest("/exec", c)
+}
+
+// execSignalCmd executes remotely a command
+func (s *APIService) execSignalCmd(c *gin.Context) {
+	s._execRequest("/signal", c)
+}
+
+func (s *APIService) _execRequest(url string, c *gin.Context) {
+	data, err := c.GetRawData()
+	if err != nil {
+		common.APIError(c, err.Error())
+	}
+
+	// First get Project ID to retrieve Server ID and send command to right server
+	id := c.Param("id")
+	if id == "" {
+		args := ExecArgs{}
+		// XXX - we cannot use c.BindJSON, so directly unmarshall it
+		// (see https://github.com/gin-gonic/gin/issues/1078)
+		if err := json.Unmarshal(data, &args); err != nil {
+			common.APIError(c, "Invalid arguments")
+			return
+		}
+		id = args.ID
+	}
+	prj := s.projects.Get(id)
+	if prj == nil {
+		common.APIError(c, "Unknown id")
+		return
+	}
+
+	svr := (*prj).GetServer()
+	if svr == nil {
+		common.APIError(c, "Cannot identify XDS Server")
+		return
+	}
+
+	// Retrieve session info
+	sess := s.sessions.Get(c)
+	if sess == nil {
+		common.APIError(c, "Unknown sessions")
+		return
+	}
+	sock := sess.IOSocket
+	if sock == nil {
+		common.APIError(c, "Websocket not established")
+		return
+	}
+
+	// Forward XDSServer WS events to client WS
+	// TODO removed static event name list and get it from XDSServer
+	for _, evName := range []string{
+		"exec:input",
+		"exec:output",
+		"exec:exit",
+		"exec:inferior-input",
+		"exec:inferior-output",
+	} {
+		evN := evName
+		svr.EventOn(evN, func(evData interface{}) {
+			(*sock).Emit(evN, evData)
+		})
+	}
+
+	// Forward back command to right server
+	response, err := svr.HTTPPostBody(url, string(data))
+	if err != nil {
+		common.APIError(c, err.Error())
+		return
+	}
+
+	// Decode response
+	body, err := ioutil.ReadAll(response.Body)
+	if err != nil {
+		common.APIError(c, "Cannot read response body")
+		return
+	}
+	c.JSON(http.StatusOK, string(body))
+
+}
-- 
cgit 1.2.3-korg