Add a network info page (#2187)

Add network info page

frontend/device/generic/device.lua

@@ -196,4 +196,19 @@ function Device:exit()
     self.screen:close()
 end
 
+function Device:retrieveNetworkInfo()
+    local std_out = io.popen("ifconfig | " ..
+                             "sed -n " ..
+                             "-e 's/ \\+$//g' " ..
+                             "-e 's/ \\+/ /g' " ..
+                             "-e 's/inet6\\? addr: \\?\\([^ ]\\+\\) .*$/\\1/p' " ..
+                             "-e 's/Link encap:\\(.*\\)/\\1/p'",
+                             "r")
+    if std_out then
+        local result = std_out:read("*all")
+        std_out:close()
+        return result
+    end
+end
+
 return Device

frontend/ui/elements/common_settings_menu_table.lua

@@ -32,6 +32,7 @@ table.insert(common_settings, {
     sub_item_table = {
         NetworkMgr:getWifiMenuTable(),
         NetworkMgr:getProxyMenuTable(),
+        NetworkMgr:getInfoMenuTable(),
     }
 })
 table.insert(common_settings, {

frontend/ui/network/manager.lua

@@ -117,6 +117,24 @@ function NetworkMgr:getProxyMenuTable()
     }
 end
 
+function NetworkMgr:getInfoMenuTable()
+    return {
+        text = _("Network info"),
+        callback = function(menu)
+            if Device.retrieveNetworkInfo then
+                UIManager:show(InfoMessage:new{
+                    text = Device:retrieveNetworkInfo(),
+                })
+            else
+                UIManager:show(InfoMessage:new{
+                    text = _("Cannot retrieve network info"),
+                    timeout = 3,
+                })
+            end
+        end
+    }
+end
+
 function NetworkMgr:showNetworkMenu(complete_callback)
     local info = InfoMessage:new{text = _("Scanning…")}
     UIManager:show(info)