add commands for set proxy in FF

Commands:
  'sn' -> none proxy
  'ss' -> system proxy
  'sa' -> autodetect proxy
  'sm' -> manual proxy

Author: klim-iv

background_scripts/commands.js

@@ -356,7 +356,8 @@ const Commands = {
       "zoomOut",
       "zoomReset",
     ],
-    misc: ["showHelp", "toggleViewSource"],
+    misc: ["showHelp", "toggleViewSource"] +
+          ["setProxyNone", "setProxyAutodetect", "setProxySystem", "setProxyManual"],
   },
 
   // Rarely used commands are not shown by default in the help dialog or in the README. The goal is
@@ -391,6 +392,7 @@ const Commands = {
     "zoomIn",
     "zoomOut",
     "zoomReset",
+    "setProxyNone", "setProxyAutodetect", "setProxySystem", "setProxyManual",
   ],
 };
 
@@ -476,6 +478,11 @@ const defaultKeyMappings = {
   // Misc
   "?": "showHelp",
   "gs": "toggleViewSource",
+
+  "sn": "setProxyNone",
+  "sa": "setProxyAutodetect",
+  "ss": "setProxySystem",
+  "sm": "setProxyManual",
 };
 
 // This is a mapping of: commandIdentifier => [description, options].
@@ -584,6 +591,11 @@ const commandDescriptions = {
 
   "Marks.activateCreateMode": ["Create a new mark", { noRepeat: true }],
   "Marks.activateGotoMode": ["Go to a mark", { noRepeat: true }],
+
+  setProxyNone: ["No proxy", { background: true }],
+  setProxyAutodetect: ["Auto-detect proxy settings", { background: true }],
+  setProxySystem: ["Use system proxy settings", { background: true }],
+  setProxyManual: ["Use manual proxy configuration", { background: true }],
 };
 
 globalThis.Commands = Commands;

background_scripts/main.js

@@ -210,6 +210,57 @@ function nextZoomLevel(currentZoom, steps) {
   }
 }
 
+function setProxy(request, sender, proxy_type) {
+  const currentTab = request.tab;
+  const tabId = request.tabId;
+  const registryEntry = request.registryEntry;
+
+  if (typeof browser === "undefined" || typeof browser.proxy === "undefined") {
+    chrome.tabs.sendMessage(tabId, {
+      frameId: sender.frameId,
+      handler: "showMessage",
+      message: "Not supported proxy change"
+    });
+    return;
+  }
+
+  var getting = browser.proxy.settings.get({});
+
+  getting.then((got) => {
+    got.value.proxyType = proxy_type;
+
+    var msg;
+    if (proxy_type == "none")
+      msg = "None proxy";
+    else if (proxy_type == "autoDetect")
+      msg = "Auto detect proxy";
+    else if (proxy_type == "system")
+      msg = "System proxy";
+    else if (proxy_type == "manual")
+      msg = "Manual proxy: " + got.value.http;
+
+    browser.proxy.settings.set({value: got.value})
+      .then((res) => {
+        if (res) {
+          chrome.tabs.sendMessage(tabId, {
+            frameId: sender.frameId,
+            handler: "showMessage",
+            message: msg
+          });
+        } else
+          throw new Error();
+      })
+      .catch((err) => {
+          chrome.tabs.sendMessage(tabId, {
+            frameId: sender.frameId,
+            handler: "showMessage",
+            message: "Required private browsing permission"
+          });
+        }
+      );
+  });
+}
+
 // These are commands which are bound to keystrokes which must be handled by the background page.
 // They are mapped in commands.js.
 const BackgroundCommands = {
@@ -411,6 +462,23 @@ const BackgroundCommands = {
       chrome.tabs.reload(tab.id, { bypassCache: true });
     });
   },
+
+  setProxyNone(request, sender) {
+    setProxy(request, sender, "none");
+  },
+
+  setProxyAutodetect(request, sender) {
+    setProxy(request, sender, "autoDetect");
+  },
+
+  setProxySystem(request, sender) {
+    setProxy(request, sender, "system");
+  },
+
+  setProxyManual(request, sender) {
+    setProxy(request, sender, "manual");
+  },
+
 };
 
 async function forCountTabs(count, currentTab, callback) {

make.js

@@ -36,6 +36,8 @@ function createFirefoxManifest(manifest) {
   manifest.permissions = manifest.permissions
     // The favicon permission is not yet supported by Firefox.
     .filter((p) => p != "favicon")
+    // added for switch proxy configuration in Firefox
+    .concat(["browserSettings", "proxy"])
     // Firefox needs clipboardRead and clipboardWrite for commands like "copyCurrentUrl", but Chrome
     // does not. See #4186.
     .concat(["clipboardRead", "clipboardWrite"]);