From b7434629d7955957eb393b55516ab8de59133e76 Mon Sep 17 00:00:00 2001
From: Rob Austein <sra@hactrn.net>
Date: Mon, 16 Sep 2019 02:39:36 +0000
Subject: Icky hack

---
 README.md | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/README.md b/README.md
index fce7c2f..6f7082c 100644
--- a/README.md
+++ b/README.md
@@ -47,3 +47,40 @@ https://ipmi.bar.example.org
 There's probably some way to preset Waterfox's MIME handler for `jnlp`
 files to run `/usr/bin/javaws` but after working out all of the above
 I lack the patience to dig further today.
+
+Yeah, there's a way, and it's disgusting: pre-populate the Waterfox
+config tree, then overwrite or edit `handlers.json`.  Something like
+this would work for the pre-population step:
+
+```
+waterfox --headless & waterfox=$!
+sleep 2
+kill -HUP $waterfox
+```
+
+Then either blindly `cp` or use a small Python script to edit the
+JSON.  The snippet we want to add is:
+
+```
+        "application/x-java-jnlp-file": {
+            "action": 2,
+            "extensions": [
+                "jnlp"
+            ],
+            "handlers": [
+                {
+                    "name": "javaws",
+                    "path": "/usr/bin/javaws"
+                }
+            ]
+        }
+```
+
+as another entry in the `mimeTypes` section.
+
+```
+>>> import json
+>>> handlers = json.load(open("handlers.json"))
+>>> handlers["mimeTypes"]["application/x-java-jnlp-file"]
+{u'action': 2, u'extensions': [u'jnlp'], u'handlers': [{u'path': u'/usr/bin/javaws', u'name': u'javaws'}]}
+```
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