1 files changed, 82 insertions, 0 deletions
diff --git a/comm/suite/components/security/content/prefs/pref-ssl.js b/comm/suite/components/security/content/prefs/pref-ssl.js
new file mode 100644
index 0000000000..1e807f7402
--- /dev/null
+++ b/comm/suite/components/security/content/prefs/pref-ssl.js
@@ -0,0 +1,82 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function Startup()
+{
+  // map associating preference values with checkbox element IDs
+  gSslPrefElements = new Map([[1, "allowTLS10"],
+                              [2, "allowTLS11"],
+                              [3, "allowTLS12"],
+                              [4, "allowTLS13"]]);
+
+  // initial setting of checkboxes based on preference values
+  UpdateSslBoxes();
+}
+
+function UpdateSslBoxes()
+{
+  // get minimum and maximum allowed protocol and locked status
+  let minVersion = document.getElementById("security.tls.version.min").value;
+  let maxVersion = document.getElementById("security.tls.version.max").value;
+  let minLocked  = document.getElementById("security.tls.version.min").locked;
+  let maxLocked  = document.getElementById("security.tls.version.max").locked;
+
+  // check if allowable limits are violated, use default values if they are
+  if (minVersion > maxVersion || !gSslPrefElements.has(minVersion)
+                              || !gSslPrefElements.has(maxVersion))
+  {
+    minVersion = document.getElementById("security.tls.version.min").defaultValue;
+    maxVersion = document.getElementById("security.tls.version.max").defaultValue;
+  }
+
+  // set checked, disabled, and locked status for each protocol checkbox
+  for (let [version, id] of gSslPrefElements)
+  {
+    let currentBox = document.getElementById(id);
+    currentBox.checked = version >= minVersion && version <= maxVersion;
+
+    if ((minLocked && maxLocked) || (minLocked && version <= minVersion) ||
+                                    (maxLocked && version >= maxVersion))
+    {
+      // boxes subject to a preference's locked status are disabled and grayed
+      currentBox.removeAttribute("nogray");
+      currentBox.disabled = true;
+    }
+    else
+    {
+      // boxes which the user can't uncheck are disabled but not grayed
+      currentBox.setAttribute("nogray", "true");
+      currentBox.disabled = (version > minVersion && version < maxVersion) ||
+                            (version == minVersion && version == maxVersion);
+    }
+  }
+}
+
+function UpdateSslPrefs()
+{
+  // this is called whenever a checkbox changes
+  let minVersion = -1;
+  let maxVersion = -1;
+
+  // find the first and last checkboxes which are now checked
+  for (let [version, id] of gSslPrefElements)
+  {
+    if (document.getElementById(id).checked)
+    {
+      if (minVersion < 0)  // first box checked
+        minVersion = version;
+      maxVersion = version;  // last box checked so far
+    }
+  }
+
+  // if minVersion is valid, then maxVersion is as well -> update prefs
+  if (minVersion >= 0)
+  {
+    document.getElementById("security.tls.version.min").value = minVersion;
+    document.getElementById("security.tls.version.max").value = maxVersion;
+  }
+
+  // update checkbox values and visibility based on prefs again
+  UpdateSslBoxes();
+}