Add ip2geo util and use it in mailing list logic

Author: Franck Chastagnol

data/ip2geo/COPYRIGHT.txt

@@ -0,0 +1 @@
+Database and Contents Copyright (c) 2019 MaxMind, Inc.

data/ip2geo/GeoLite2-Country.mmdb

@@ -0,0 +1,3 @@
+This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/.
+
+This database incorporates GeoNames [http://www.geonames.org] geographical data, which is made available under the Creative Commons Attribution 3.0 License. To view a copy of this license, visit http://www.creativecommons.org/licenses/by/3.0/us/.

data/ip2geo/LICENSE.txt

@@ -0,0 +1,2 @@
+GeoLite2 Country Database
+Date: 2019-12-24

data/ip2geo/VERSION.txt

@@ -33,6 +33,7 @@ flower==0.9.2
 FullContact.py==0.0.6
 funcsigs==1.0.2
 futures==3.2.0
+geoip2==3.0.0
 gnureadline==6.3.8
 google-api-python-client==1.7.8
 google-auth==1.6.2
@@ -83,7 +84,7 @@ pyuca==1.2
 ratelimit==2.2.1
 raven==6.6.0
 redis==3.1.0
-requests==2.20.0
+requests==2.22.0
 requests-oauthlib==1.2.0
 rsa==4.0
 scandir==1.6
@@ -99,7 +100,7 @@ text-unidecode==1.2
 tornado==5.1.1
 traitlets==4.3.2
 uritemplate==3.0.0
-urllib3==1.24.2
+urllib3==1.25.2
 vine==1.2.0
 wcwidth==0.1.7
 Werkzeug==0.14.1

requirements.txt

@@ -0,0 +1,15 @@
+import geoip2.database
+
+# Reader is a bit expensive to instantiate so create a singleton instance
+# initialized once at import time.
+reader = geoip2.database.Reader('./data/ip2geo/GeoLite2-Country.mmdb')
+
+
+# Resolves country based on an IP address.
+# Returns 2 letter ISO country code or None.
+def get_country(ip):
+    try:
+        data = reader.country(ip)
+    except:
+        return None
+    return data.country.iso_code

util/ip2geo.py

@@ -19,6 +19,7 @@
 from logic.views import social_stats
 import requests
 
+from util.ip2geo import get_country
 from util.misc import sort_language_constants, get_real_ip, concat_asset_files, log
 
 import google.oauth2.credentials
@@ -183,7 +184,7 @@ def join_mailing_list():
         full_name = ' '.join(filter(None, (first_name, last_name)))
     phone = request.form.get('phone') or None
     ip_addr = request.form.get('ip_addr') or get_real_ip()
-    country_code = request.form.get('country_code') or None
+    country_code = request.form.get('country_code') or get_country(ip_addr)
     dapp_user = 1 if 'dapp_user' in request.form else 0
     investor = 1 if 'investor' in request.form else 0
     backfill = request.form.get('backfill') or None # Indicates the request was made from an internal backfill script.