1 files changed, 80 insertions, 0 deletions
diff --git a/comm/chat/protocols/irc/ircServerTime.sys.mjs b/comm/chat/protocols/irc/ircServerTime.sys.mjs
new file mode 100644
index 0000000000..14ce2436f3
--- /dev/null
+++ b/comm/chat/protocols/irc/ircServerTime.sys.mjs
@@ -0,0 +1,80 @@
+/* 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/. */
+
+/*
+ * This implements server-time for IRC.
+ *   https://ircv3.net/specs/extensions/server-time-3.2
+ */
+
+import { ircHandlerPriorities } from "resource:///modules/ircHandlerPriorities.sys.mjs";
+
+function handleServerTimeTag(aMsg) {
+  if (aMsg.tagValue) {
+    // Normalize leap seconds to the next second before it.
+    const time = aMsg.tagValue.replace(/60.\d{3}(?=Z$)/, "59.999");
+    aMsg.message.time = Math.floor(Date.parse(time) / 1000);
+    aMsg.message.delayed = true;
+  }
+}
+
+export var tagServerTime = {
+  name: "server-time Tags",
+  priority: ircHandlerPriorities.DEFAULT_PRIORITY,
+  isEnabled() {
+    return (
+      this._activeCAPs.has("server-time") ||
+      this._activeCAPs.has("znc.in/server-time-iso")
+    );
+  },
+
+  commands: {
+    time: handleServerTimeTag,
+    "znc.in/server-time-iso": handleServerTimeTag,
+  },
+};
+
+export var capServerTime = {
+  name: "server-time CAP",
+  priority: ircHandlerPriorities.DEFAULT_PRIORITY,
+  isEnabled: () => true,
+
+  commands: {
+    "server-time": function (aMessage) {
+      if (
+        aMessage.cap.subcommand === "LS" ||
+        aMessage.cap.subcommand === "NEW"
+      ) {
+        this.addCAP("server-time");
+        this.sendMessage("CAP", ["REQ", "server-time"]);
+      } else if (
+        aMessage.cap.subcommand === "ACK" ||
+        aMessage.cap.subcommand === "NAK"
+      ) {
+        this.removeCAP("server-time");
+      } else {
+        return false;
+      }
+      return true;
+    },
+    "znc.in/server-time-iso": function (aMessage) {
+      // Only request legacy server time CAP if the standard one is not available.
+      if (
+        (aMessage.cap.subcommand === "LS" ||
+          aMessage.cap.subcommand === "NEW") &&
+        !this._availableCAPs.has("server-time")
+      ) {
+        this.addCAP("znc.in/server-time-iso");
+        this.sendMessage("CAP", ["REQ", "znc.in/server-time-iso"]);
+      } else if (
+        aMessage.cap.subcommand === "ACK" ||
+        aMessage.cap.subcommand === "NAK"
+      ) {
+        this.removeCAP("znc.in/server-time-iso");
+      } else {
+        return false;
+      }
+      return true;
+    },
+  },
+};