From ee63982defe4f153e0ebc0a7756f3aeccd47e9d0 Mon Sep 17 00:00:00 2001
From: roytam1 <roytam@gmail.com>
Date: Thu, 15 Nov 2018 22:09:09 +0800
Subject: [PATCH] allow accessing non-standard port of gopher by toggling
 network.gopher.port-restricted to false (default: true)

---
 modules/libpref/src/init/all.js                 |  3 +++
 netwerk/protocol/gopher/src/nsGopherChannel.cpp | 16 ++++++++++++----
 2 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/modules/libpref/src/init/all.js b/modules/libpref/src/init/all.js
index 03179400..683f7de8 100644
--- a/modules/libpref/src/init/all.js
+++ b/modules/libpref/src/init/all.js
@@ -2390,3 +2390,6 @@ pref("print.print_command", "lp -c -s ${MOZ_PRINTER_NAME:+'-d '}${MOZ_PRINTER_NA
 #ifdef MOZ_X11
 pref("network.gnomevfs.supported-protocols", "smb:,sftp:");
 #endif
+
+// restrict gopher port to port 70 only
+pref("network.gopher.port-restricted", true);
diff --git a/netwerk/protocol/gopher/src/nsGopherChannel.cpp b/netwerk/protocol/gopher/src/nsGopherChannel.cpp
index c286cd97..8196b235 100644
--- a/netwerk/protocol/gopher/src/nsGopherChannel.cpp
+++ b/netwerk/protocol/gopher/src/nsGopherChannel.cpp
@@ -122,13 +122,21 @@ nsGopherChannel::Init(nsIURI* uri, nsIProxyInfo* proxyInfo)
     if (NS_FAILED(rv))
         return rv;
 
+    PRBool restrictedPort = PR_TRUE;
+    nsCOMPtr<nsIPrefBranch> branch;
+    nsCOMPtr<nsIPrefService> prefs = do_GetService("@mozilla.org/preferences-service;1", &rv);
+    if (!NS_FAILED(rv)) {
+        branch = do_QueryInterface(prefs);
+
+        branch->GetBoolPref("network.gopher.port-restricted" , &restrictedPort);
+    }
     // For security reasons, don't allow anything expect the default
     // gopher port (70). See bug 71916 - bbaetz@cs.mcgill.ca
-/*
-    if (mPort==-1)
+    if(!restrictedPort) {
+        if (mPort==-1)
+            mPort=GOPHER_PORT;
+    } else
         mPort=GOPHER_PORT;
-*/
-    mPort=GOPHER_PORT;
 
     // No path given
     if (buffer[0]=='\0' || (buffer[0]=='/' && buffer[1]=='\0')) {