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go/src/themaru/http.go 6.72 KB
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  package main
  
  import (
  	"html/template"
  	"net/http"
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  	"sync"
  
  	"github.com/gin-contrib/multitemplate"
  	"github.com/gin-gonic/gin"
  )
  
  var mu sync.Mutex
  
  var indexPage = template.Must(template.New("index.html").Parse(`
  <html>
  <head>
    <title>System Configuration</title>
    <style type="text/css">
      div { margin-left: 20px; }
    </style>
  </head>
  <body>
    <h1>{{.Device}} Configuration</h1>
    <div>
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      <p>System Version: {{.falinux_version}}</p>
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    </div>
    <hr>
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    <h1>Updating System</h1>
    <div>
      <form action="/system" method="post" enctype="multipart/form-data">
        <input type="file" name="image" />
        <input type="submit" value="Update" />
      </form>
    </div>
    <h1>Updating Application</h1>
    <div>
      <form action="/application" method="post" enctype="multipart/form-data">
        <input type="file" name="image" />
        <input type="submit" value="Update" />
      </form>
    </div>
    <h1>Restore System Image</h1>
    <div>
      <form action="/restore">
        <input type="submit" value="Restore" />
      </form>
    </div>
  </body>
  </html>
  `))
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  var networkPage = template.Must(template.New("network.html").Parse(`
  <html>
  <head>
    <title>Network Configuration</title>
    <style type="text/css">
      div { margin-left: 20px; }
    </style>
  </head>
  <body>
    <form action="/network" method="post">
      <h1>Setting Network</h1>
      <div>
        <p>
          <label for="ethaddr">Ethernet Address</label><br />
          <input type="text" id="ethaddr" name="ethaddr" value="{{.ethaddr}}" required />
        </p>
        <p>
          <label for="ipaddr">IP Address</label><br />
          <input type="text" id="ipaddr" name="ipaddr" value="{{.ipaddr}}" required />
        </p>
        <p>
          <label for="netmask">Netmask</label><br />
          <input type="text" id="netmask" name="netmask" value="{{.netmask}}" required />
        </p>
        <p>
          <label for="gateway">Gateway</label><br />
          <input type="text" id="gateway" name="gateway" value="{{.gateway}}" required />
        </p>
      </div>
      <label for="submit"><h1>Click to Apply</h1></label>
      <div>
        <p><input id="submit" type="submit" value="Set" /></p>
      </div>
    </form>
  </body>
  </html>
  `))
  
  var networkPageDual = template.Must(template.New("network.html").Parse(`
  <html>
  <head>
    <title>Network Configuration</title>
    <style type="text/css">
      div { margin-left: 20px; }
    </style>
  </head>
  <body>
    <form action="/network" method="post">
      <h1>Setting Network</h1>
      <div>
        <p>
          <label for="ethaddr">Ethernet Address</label><br />
          <input type="text" id="ethaddr" name="ethaddr" value="{{.ethaddr}}" required />
        </p>
        <p>
          <label for="ipaddr">IP Address</label><br />
          <input type="text" id="ipaddr" name="ipaddr" value="{{.ipaddr}}" required />
        </p>
        <p>
          <label for="netmask">Netmask</label><br />
          <input type="text" id="netmask" name="netmask" value="{{.netmask}}" required />
        </p>
        <p>
          <label for="gateway">Gateway</label><br />
          <input type="text" id="gateway" name="gateway" value="{{.gateway}}" required />
        </p>
      </div>
      <h1>Setting Network 2</h1>
      <div>
        <p>
          <label for="ethaddr2">Ethernet Address</label><br />
          <input type="text" id="ethaddr2" name="ethaddr2" value="{{.ethaddr2}}" required />
        </p>
        <p>
          <label for="ipaddr2">IP Address</label><br />
          <input type="text" id="ipaddr2" name="ipaddr2" value="{{.ipaddr2}}" required />
        </p>
        <p>
          <label for="netmask2">Netmask</label><br />
          <input type="text" id="netmask2" name="netmask2" value="{{.netmask2}}" required />
        </p>
        <p>
          <label for="gateway2">Gateway</label><br />
          <input type="text" id="gateway2" name="gateway2" value="{{.gateway2}}" required />
        </p>
      </div>
      <label for="submit"><h1>Click to Apply</h1></label>
      <div>
        <p><input id="submit" type="submit" value="Set" /></p>
      </div>
    </form>
  </body>
  </html>
  `))
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  var rebootPage = template.Must(template.New("reboot.html").Parse(`
  <html>
  <head>
    <title>OK</title>
  </head>
  <body>
    <p>{{.Message}}</p>
    <form action="/reboot/">
      <input type="submit" value="Reboot" />
    </form>
  </body>
  </html>
  `))
  
  func runHttp() {
  	gin.SetMode(gin.ReleaseMode)
  
  	g := gin.Default()
  
  	r := multitemplate.NewRenderer()
  	r.Add("index.html", indexPage)
  	r.Add("reboot.html", rebootPage)
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  	if hasDualNetwork {
  		r.Add("network.html", networkPageDual)
  	} else {
  		r.Add("network.html", networkPage)
  	}
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  	g.HTMLRender = r
  
  	g.GET("/", renderIndex)
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  	g.GET("/network", renderNetwork)
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  	g.POST("/network", handleNetwork)
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  	g.POST("/system", handleSystem)
  	g.POST("/application", handleApplication)
  
  	g.GET("/reboot", handleReboot)
  	g.GET("/restore", handleRestore)
  
  	g.Run(":8988")
  }
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  func handleNetwork(c *gin.Context) {
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  	mu.Lock()
  	defer mu.Unlock()
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  	keyList := []string{"ethaddr", "ipaddr", "netmask", "gateway"}
  	if hasDualNetwork {
  		keyList = append(keyList, "ethaddr2", "ipaddr2", "netmask2", "gateway2")
  	}
  
  	env := map[string]string{}
  	for _, key := range keyList {
  		env[key] = c.PostForm(key)
  	}
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  	if err := setNetwork(env); err != nil {
  		c.String(http.StatusBadRequest, "network: setNetwork: %s", err.Error())
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  		return
  	}
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  	c.HTML(http.StatusOK, "reboot.html", gin.H{"Message": "Network is configured."})
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  }
  
  func handleSystem(c *gin.Context) {
  	mu.Lock()
  	defer mu.Unlock()
  
  	if err := saveFormFile(c, "image", "/tmp/system.zip"); err != nil {
  		c.String(http.StatusBadRequest, "system: saveFormFile: %s", err.Error())
  		return
  	}
  
  	if err := updateSystem(); err != nil {
  		c.String(http.StatusBadRequest, "system: updateSystem: %s", err.Error())
  		return
  	}
  
  	c.HTML(http.StatusOK, "reboot.html", gin.H{"Message": "System is updated."})
  }
  
  func handleApplication(c *gin.Context) {
  	mu.Lock()
  	defer mu.Unlock()
  
  	if err := saveFormFile(c, "image", "/tmp/application.zip"); err != nil {
  		c.String(http.StatusBadRequest, "application: saveFormFile: %s", err.Error())
  		return
  	}
  
  	if err := updateApp(); err != nil {
  		c.String(http.StatusBadRequest, "application: updateApplication: %s", err.Error())
  		return
  	}
  
  	c.HTML(http.StatusOK, "reboot.html", gin.H{"Message": "Application is updated."})
  }
  
  func handleReboot(c *gin.Context) {
  	reboot()
  
  	c.String(http.StatusOK, "OK")
  }
  
  func handleRestore(c *gin.Context) {
  	mu.Lock()
  	defer mu.Unlock()
  
  	restore()
  
  	c.HTML(http.StatusOK, "reboot.html", gin.H{"Message": "Restoration is done."})
  }
  
  func renderIndex(c *gin.Context) {
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  	env, _ := getEnv(1)
  	env["Device"] = deviceName
  
  	c.HTML(http.StatusOK, "index.html", env)
  }
  
  func renderNetwork(c *gin.Context) {
  	env, _ := getEnv(0)
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  	c.HTML(http.StatusOK, "network.html", env)
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  }
  
  func saveFormFile(c *gin.Context, name string, dst string) error {
  	file, err := c.FormFile(name)
  	if err != nil {
  		return err
  	}
  
  	return c.SaveUploadedFile(file, dst)
  }