Cloudflare was being too slow, changed to gateway.ipfs.io

LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Alex Kelly
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,56 @@
+Chainlink
+=========
+
+Chainlink is a utility that will run on a webserver to handle crypto-backed
+domain names Specifically this works with
+[Unstoppable Domains](https://unstoppabledomains.com)
+This utilizes public IPFS gateways to display IPFS content, or will redirect to
+whatever the URL is set to in the Unstoppable Domain management.
+
+Installation
+============
+
+To install this on your own server:
+
+1.  Clone this repository
+2.  Install the python dependancies via `pip install -r requirements.txt`
+3.  Run the server with `./chainlink.py`
+4.  You can now hit the app at http://localhost:5000
+
+Testing on a running instance
+=============================
+
+Assuming that it is running (I could be messing with it, or it might just be
+broken), you may try this without installing by going to
+https://chainlink.arachnitech.com/
+
+URL Patterns
+============
+
+The general format is http://localhost:5000/{domain}/{action}
+where {domain} is a .crypto or .zil name registered with Unstoppable
+Domains and {action} can be
+* html - uses the IPFS hash set in Unstoppable Domains management
+* redir - uses the redirect_url set in Unstoppable Domains management
+* raw - displays an HTML table view of the full JSON returned from Unstoppable
+    Domains API
+
+The default action is "html", so if you don't specify anything it will attempt
+to use that field.
+
+Browser Search Engine
+=====================
+
+I added a browser search engine for each of the UD domains (.zil and .crypto) so
+that, when I type `.crypto domain` The browser will automatically redirect based
+on the output from my chainlink script.
+
+The settings to make that work for .crypto is: <p>
+![.crypto search registration][crypto]
+
+It's basically the same for .zil: <p>
+![.crypto search registration][zil]
+
+
+[crypto]: images/cryptosearch.png
+[zil]: images/zilsearch.png

chainlink.py

@@ -1,25 +1,34 @@
 #!/usr/bin/env python
 """Utilize crypto domains DNS and either redirect, or display information."""
-from bottle import Bottle, run, response, request
+from bottle import Bottle, run, response, request, static_file, redirect
 import json
 import requests
 import json2html
 
-VERSION = '0.0.1'
+VERSION = '0.1.0'
 
 app = Bottle()
 
 
 def domainLookup(domain):
-    apibase = 'https://unstoppabledomains.com/api/v1/'
-    dnslookup = requests.get(apibase + domain)
-    domainJSON = json.loads(dnslookup.content)
-    print(domainJSON)
-    return domainJSON
+    """Return a dictionary from JSON results of API call
+    or return False if there is an error
+    """
+    try:
+        apibase = 'https://unstoppabledomains.com/api/v1/'
+        dnslookup = requests.get(apibase + domain)
+        if dnslookup.status_code == 200:
+            domainInfo = json.loads(dnslookup.content)
+            return domainInfo
+        else:
+            return False
+    except requests.exceptions.ConnectionError:
+        return False
 
 
 @app.route("/")
 def root():
+    """Index page, just displays information about URL formatting"""
     host = request.get_header('host')
     helptext = f"""
     <p>General format is {host}/&lt;domain&gt;/&lt;action&gt;
@@ -33,7 +42,7 @@ def root():
     </tr>
     <tr>
     <td>html</td>
-    <td>Hit the IPFS hash via cloudflare-ipfs.com</td>
+    <td>Hit the IPFS hash via gateway.ipfs.io</td>
     </tr>
     <tr>
     <td>redir</td>
@@ -49,10 +58,24 @@ def root():
 @app.route("/<domain>/")
 @app.route("/<domain>/<action>")
 def redirectDomain(domain, action=None):
+    """Handle the actual redirect for the domain queried"""
     lookupResult = domainLookup(domain)
-    redirect_url = lookupResult['ipfs']['redirect_domain']
-    html = lookupResult['ipfs']['html']
-    if action == 'redir':
+    if domain == 'yourdomain.crypto' or domain == 'yourdomain.zil':
+        redirect('/')
+    if lookupResult:
+        redirect_url = lookupResult['ipfs']['redirect_domain']
+        ipfs_hash = lookupResult['ipfs']['html']
+    else:
+        return f"Unable to get info for {domain}"
+    if action is None or action == 'html':
+        response.status = 302
+        if not ipfs_hash.startswith('/ip'):
+            ipfshash = "ipfs/" + ipfs_hash
+        else:
+            ipfshash = ipfs_hash
+        response.set_header('Location',
+                            f"https://gateway.ipfs.io/{ipfshash}")
+    elif action == 'redir':
         try:
             if not redirect_url.startswith('http'):
                 redirect_url = "http://" + redirect_url
@@ -60,17 +83,15 @@ def redirectDomain(domain, action=None):
             response.set_header('Location', redirect_url)
         except KeyError:
             return f'Did not find a redirect for {domain}'
-    elif action is None or action == 'html':
-        response.status = 302
-        if not html.startswith('/ip'):
-            ipfshash = "ipfs/" + html
-        else:
-            ipfshash = html
-        response.set_header('Location',
-                            f"https://cloudflare-ipfs.com/{ipfshash}")
     elif action == 'raw':
         return json2html.json2html.convert(json=lookupResult)
 
 
+@app.route("/favicon.ico")
+def favicon():
+    """Display a favicon to make the errors go away :)"""
+    return static_file('favicon.ico', root='images')
+
+
 if __name__ == "__main__":
     run(app, host='0.0.0.0', port='5000', reloader=True)