http.go
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package main
import (
"html/template"
"net/http"
"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>
<p>System Version: {{.falinux_version}}</p>
</div>
<hr>
<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>
`))
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>
`))
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)
if hasDualNetwork {
r.Add("network.html", networkPageDual)
} else {
r.Add("network.html", networkPage)
}
g.HTMLRender = r
g.GET("/", renderIndex)
g.GET("/network", renderNetwork)
g.POST("/network", handleNetwork)
g.POST("/system", handleSystem)
g.POST("/application", handleApplication)
g.GET("/reboot", handleReboot)
g.GET("/restore", handleRestore)
g.Run(":8988")
}
func handleNetwork(c *gin.Context) {
mu.Lock()
defer mu.Unlock()
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)
}
if err := setNetwork(env); err != nil {
c.String(http.StatusBadRequest, "network: setNetwork: %s", err.Error())
return
}
c.HTML(http.StatusOK, "reboot.html", gin.H{"Message": "Network is configured."})
}
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) {
env, _ := getEnv(1)
env["Device"] = deviceName
c.HTML(http.StatusOK, "index.html", env)
}
func renderNetwork(c *gin.Context) {
env, _ := getEnv(0)
c.HTML(http.StatusOK, "network.html", env)
}
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)
}