Refactoring, sites database tests

maigret/maigret.py

@@ -25,7 +25,7 @@ from socid_extractor import parse, extract
 
 from .notify import QueryNotifyPrint
 from .result import QueryResult, QueryStatus
-from .sites import SitesInformation
+from .sites import MaigretDatabase, MaigretSite
 
 import xmind
 
@@ -55,7 +55,7 @@ unsupported_characters = '#'
 cookies_file = 'cookies.txt'
 
 
-async def get_response(request_future, social_network, logger):
+async def get_response(request_future, site_name, logger):
     html_text = None
     status_code = 0
 
@@ -92,7 +92,7 @@ async def get_response(request_future, social_network, logger):
         error_text = "Proxy Error"
         expection_text = str(err)
     except Exception as err:
-        logger.warning(f'Unhandled error while requesting {social_network}: {err}')
+        logger.warning(f'Unhandled error while requesting {site_name}: {err}')
         logger.debug(err, exc_info=True)
         error_text = "Some Error"
         expection_text = str(err)
@@ -101,19 +101,19 @@ async def get_response(request_future, social_network, logger):
     return html_text, status_code, error_text, expection_text
 
 
-async def update_site_data_from_response(sitename, site_data, results_info, semaphore, logger, query_notify):
+async def update_site_dict_from_response(sitename, site_dict, results_info, semaphore, logger, query_notify):
     async with semaphore:
-        site_obj = site_data[sitename]
+        site_obj = site_dict[sitename]
-        future = site_obj.get('request_future')
+        future = site_obj.request_future
         if not future:
             # ignore: search by incompatible id type
             return
 
         response = await get_response(request_future=future,
-                                      social_network=sitename,
+                                      site_name=sitename,
                                       logger=logger)
 
-        site_data[sitename] = process_site_result(response, query_notify, logger, results_info, site_obj, sitename)
+        site_dict[sitename] = process_site_result(response, query_notify, logger, results_info, site_obj)
 
 
 # TODO: move info separate module
@@ -137,13 +137,11 @@ def detect_error_page(html_text, status_code, fail_flags, ignore_403):
     return None, None
 
 
-def process_site_result(response, query_notify, logger, results_info, net_info, social_network):
+def process_site_result(response, query_notify, logger, results_info, site: MaigretSite):
     if not response:
         return results_info
 
-    fulltags = []
+    fulltags = site.tags
-    if ("tags" in net_info.keys()):
-        fulltags = net_info["tags"]
 
     # Retrieve other site information again
     username = results_info['username']
@@ -157,14 +155,14 @@ def process_site_result(response, query_notify, logger, results_info, net_info,
         return results_info
 
     # Get the expected error type
-    error_type = net_info["errorType"]
+    error_type = site.check_type
 
     # Get the failure messages and comments
-    failure_errors = net_info.get("errors", {})
+    failure_errors = site.errors
 
     # TODO: refactor
     if not response:
-        logger.error(f'No response for {social_network}')
+        logger.error(f'No response for {site.name}')
         return results_info
 
     html_text, status_code, error_text, expection_text = response
@@ -182,37 +180,37 @@ def process_site_result(response, query_notify, logger, results_info, net_info,
 
     if status_code and not error_text:
         error_text, site_error_text = detect_error_page(html_text, status_code, failure_errors,
-                                                        'ignore_403' in net_info)
+                                                        site.ignore_403)
 
     # presense flags
     # True by default
-    presense_flags = net_info.get("presenseStrs", [])
+    presense_flags = site.presense_strs
     is_presense_detected = html_text and all(
         [(presense_flag in html_text) for presense_flag in presense_flags]) or not presense_flags
 
     if error_text is not None:
         logger.debug(error_text)
         result = QueryResult(username,
-                             social_network,
+                             site.name,
                              url,
                              QueryStatus.UNKNOWN,
                              query_time=response_time,
                              context=f'{error_text}: {site_error_text}', tags=fulltags)
     elif error_type == "message":
-        absence_flags = net_info.get("errorMsg")
+        absence_flags = site.absence_strs
         is_absence_flags_list = isinstance(absence_flags, list)
         absence_flags_set = set(absence_flags) if is_absence_flags_list else {absence_flags}
         # Checks if the error message is in the HTML
         is_absence_detected = any([(absence_flag in html_text) for absence_flag in absence_flags_set])
         if not is_absence_detected and is_presense_detected:
             result = QueryResult(username,
-                                 social_network,
+                                 site.name,
                                  url,
                                  QueryStatus.CLAIMED,
                                  query_time=response_time, tags=fulltags)
         else:
             result = QueryResult(username,
-                                 social_network,
+                                 site.name,
                                  url,
                                  QueryStatus.AVAILABLE,
                                  query_time=response_time, tags=fulltags)
@@ -220,13 +218,13 @@ def process_site_result(response, query_notify, logger, results_info, net_info,
         # Checks if the status code of the response is 2XX
         if (not status_code >= 300 or status_code < 200) and is_presense_detected:
             result = QueryResult(username,
-                                 social_network,
+                                 site.name,
                                  url,
                                  QueryStatus.CLAIMED,
                                  query_time=response_time, tags=fulltags)
         else:
             result = QueryResult(username,
-                                 social_network,
+                                 site.name,
                                  url,
                                  QueryStatus.AVAILABLE,
                                  query_time=response_time, tags=fulltags)
@@ -238,20 +236,20 @@ def process_site_result(response, query_notify, logger, results_info, net_info,
         # forward to some odd redirect).
         if 200 <= status_code < 300 and is_presense_detected:
             result = QueryResult(username,
-                                 social_network,
+                                 site.name,
                                  url,
                                  QueryStatus.CLAIMED,
                                  query_time=response_time, tags=fulltags)
         else:
             result = QueryResult(username,
-                                 social_network,
+                                 site.name,
                                  url,
                                  QueryStatus.AVAILABLE,
                                  query_time=response_time, tags=fulltags)
     else:
         # It should be impossible to ever get here...
         raise ValueError(f"Unknown Error Type '{error_type}' for "
-                         f"site '{social_network}'")
+                         f"site '{site_name}'")
 
     extracted_ids_data = {}
 
@@ -259,7 +257,7 @@ def process_site_result(response, query_notify, logger, results_info, net_info,
         try:
             extracted_ids_data = extract(html_text)
         except Exception as e:
-            logger.warning(f'Error while parsing {social_network}: {e}', exc_info=True)
+            logger.warning(f'Error while parsing {site_name}: {e}', exc_info=True)
 
         if extracted_ids_data:
             new_usernames = {}
@@ -272,22 +270,21 @@ def process_site_result(response, query_notify, logger, results_info, net_info,
             results_info['ids_usernames'] = new_usernames
             result.ids_data = extracted_ids_data
 
-    is_similar = net_info.get('similarSearch', False)
     # Notify caller about results of query.
-    query_notify.update(result, is_similar)
+    query_notify.update(result, site.similar_search)
 
     # Save status of request
     results_info['status'] = result
 
     # Save results from request
     results_info['http_status'] = status_code
-    results_info['is_similar'] = is_similar
+    results_info['is_similar'] = site.similar_search
     # results_site['response_text'] = html_text
-    results_info['rank'] = net_info.get('rank', 0)
+    results_info['rank'] = site.popularity_rank
     return results_info
 
 
-async def maigret(username, site_data, query_notify, logger,
+async def maigret(username, site_dict, query_notify, logger,
                   proxy=None, timeout=None, recursive_search=False,
                   id_type='username', tags=None, debug=False, forced=False,
                   max_connections=100):
@@ -298,7 +295,7 @@ async def maigret(username, site_data, query_notify, logger,
     Keyword Arguments:
     username               -- String indicating username that report
                               should be created against.
-    site_data              -- Dictionary containing all of the site data.
+    site_dict              -- Dictionary containing all of the site data.
     query_notify           -- Object with base type of QueryNotify().
                               This will be used to notify the caller about
                               query results.
@@ -345,21 +342,19 @@ async def maigret(username, site_data, query_notify, logger,
     results_total = {}
 
     # First create futures for all requests. This allows for the requests to run in parallel
-    for social_network, net_info in site_data.items():
+    for site_name, site in site_dict.items():
 
-        fulltags = []
+        fulltags = site.tags
-        if ("tags" in net_info.keys()):
-            fulltags = net_info["tags"]
 
-        if net_info.get('type', 'username') != id_type:
+        if site.type != id_type:
             continue
 
-        site_tags = set(net_info.get('tags', []))
+        site_tags = set(fulltags)
         if tags:
             if not set(tags).intersection(site_tags):
                 continue
 
-        if 'disabled' in net_info and net_info['disabled'] and not forced:
+        if site.disabled and not forced:
             continue
 
         # Results from analysis of this specific site
@@ -368,32 +363,29 @@ async def maigret(username, site_data, query_notify, logger,
         # Record URL of main site and username
         results_site['username'] = username
         results_site['parsing_enabled'] = recursive_search
-        results_site['url_main'] = net_info.get("urlMain")
+        results_site['url_main'] = site.url_main
 
 
         headers = {
             'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 11.1; rv:55.0) Gecko/20100101 Firefox/55.0',
         }
 
-        if "headers" in net_info:
+        headers.update(site.headers)
-            # Override/append any extra headers required by a given site.
-            headers.update(net_info["headers"])
 
         # URL of user on site (if it exists)
-        url = net_info.get('url').format(
+        url = site.url_username_format.format(
-            urlMain=net_info['urlMain'],
+            urlMain=site.url_main,
-            urlSubpath=net_info.get('urlSubpath', ''),
+            urlSubpath=site.url_subpath,
             username=username
         )
         # workaround to prevent slash errors
         url = url.replace('///', '/')
 
         # Don't make request if username is invalid for the site
-        regex_check = net_info.get("regexCheck")
+        if site.regex_check and re.search(site.regex_check, username) is None:
-        if regex_check and re.search(regex_check, username) is None:
             # No need to do the check at the site: this user name is not allowed.
             results_site['status'] = QueryResult(username,
-                                                 social_network,
+                                                 site_name,
                                                  url,
                                                  QueryStatus.ILLEGAL)
             results_site["url_user"] = ""
@@ -403,7 +395,7 @@ async def maigret(username, site_data, query_notify, logger,
         else:
             # URL of user on site (if it exists)
             results_site["url_user"] = url
-            url_probe = net_info.get("urlProbe")
+            url_probe = site.url_probe
             if url_probe is None:
                 # Probe URL is normal one seen by people out on the web.
                 url_probe = url
@@ -411,13 +403,13 @@ async def maigret(username, site_data, query_notify, logger,
                 # There is a special URL for probing existence separate
                 # from where the user profile normally can be found.
                 url_probe = url_probe.format(
-                    urlMain=net_info['urlMain'],
+                    urlMain=site.url_main,
-                    urlSubpath=net_info.get('urlSubpath', ''),
+                    urlSubpath=site.url_subpath,
                     username=username,
                 )
 
 
-            if net_info["errorType"] == 'status_code' and net_info.get("request_head_only", True):
+            if site.check_type == 'status_code' and site.request_head_only:
                 # In most cases when we are detecting by status code,
                 # it is not necessary to get the entire body:  we can
                 # detect fine with just the HEAD response.
@@ -428,7 +420,7 @@ async def maigret(username, site_data, query_notify, logger,
                 # not respond properly unless we request the whole page.
                 request_method = session.get
 
-            if net_info["errorType"] == "response_url":
+            if site.check_type == "response_url":
                 # Site forwards request to a different URL if username not
                 # found.  Disallow the redirect so we can capture the
                 # http status from the original URL request.
@@ -454,10 +446,11 @@ async def maigret(username, site_data, query_notify, logger,
                                     )
 
             # Store future in data for access later
-            net_info["request_future"] = future
+            # TODO: move to separate obj
+            site.request_future = future
 
         # Add this site's results into final dictionary with all of the other results.
-        results_total[social_network] = results_site
+        results_total[site_name] = results_site
 
     # TODO: move into top-level function
 
@@ -465,7 +458,7 @@ async def maigret(username, site_data, query_notify, logger,
 
     tasks = []
     for sitename, result_obj in results_total.items():
-        update_site_coro = update_site_data_from_response(sitename, site_data, result_obj, sem, logger, query_notify)
+        update_site_coro = update_site_dict_from_response(sitename, site_dict, result_obj, sem, logger, query_notify)
         future = asyncio.ensure_future(update_site_coro)
         tasks.append(future)
 
@@ -553,8 +546,9 @@ async def site_self_check(site_name, site_data, logger):
 
 
 async def self_check(json_file, logger):
-    data = json.load(open(json_file))
+    db = MaigretDatabase()
-    sites = SitesInformation(json_file)
+    db.load_from_file(json_file)
+    sites = db.sites
     all_sites = {}
 
     def disabled_count(data):
@@ -825,18 +819,11 @@ async def main():
 
     # Create object with all information about sites we are aware of.
     try:
-        sites = SitesInformation(args.json_file)
+        site_data_all = MaigretDatabase().load_from_file(args.json_file).sites_dict
     except Exception as error:
         print(f"ERROR:  {error}")
         sys.exit(1)
 
-    # Create original dictionary from SitesInformation() object.
-    # Eventually, the rest of the code will be updated to use the new object
-    # directly, but this will glue the two pieces together.
-    site_data_all = {}
-    for site in sites:
-        site_data_all[site.name] = site.information
-
     if args.site_list is None:
         # Not desired to look at a sub-set of sites
         site_data = site_data_all
@@ -868,7 +855,7 @@ async def main():
             site_data[site] = site_dataCpy.get(site)
 
     # Database consistency
-    enabled_count = len(list(filter(lambda x: not x.get('disabled', False), site_data.values())))
+    enabled_count = len(list(filter(lambda x: not x.disabled, site_data.values())))
     print(f'Sites in database, enabled/total: {enabled_count}/{len(site_data)}')
 
     # Create notify object for query results.

maigret/resources/data.json

@@ -1,6 +1,7 @@
 {
   "engines": {
     "XenForo": {
+      "presenseStrs": ["XenForo"],
       "site": {
         "errorMsg": [
           "The specified member cannot be found. Please enter a member's entire name.",
@@ -11,7 +12,7 @@
         "errors": {
           "You must be logged-in to do that.": "Login required"
         },
-        "url": "{urlMain}/members/?username={username}"
+        "url": "{urlMain}{urlSubpath}/members/?username={username}"
       }
     },
     "phpBB": {
@@ -46,7 +47,7 @@
           "The administrator has banned your IP address": "IP ban",
           "\u0418\u0437\u0432\u0438\u043d\u0438\u0442\u0435, \u0441\u0435\u0440\u0432\u0435\u0440 \u043f\u0435\u0440\u0435\u0433\u0440\u0443\u0436\u0435\u043d. \u041f\u043e\u0436\u0430\u043b\u0443\u0439\u0441\u0442\u0430, \u043f\u043e\u043f\u0440\u043e\u0431\u0443\u0439\u0442\u0435 \u0437\u0430\u0439\u0442\u0438 \u043f\u043e\u0437\u0436\u0435.": "Server is overloaded"
         },
-        "url": "{urlMain}/{urlSubpath}/member.php?username={username}"
+        "url": "{urlMain}{urlSubpath}/member.php?username={username}"
       }
     }
   },
@@ -6845,7 +6846,7 @@
         "ru"
       ],
       "urlMain": "https://www.infrance.su/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -7987,7 +7988,7 @@
         "ru"
       ],
       "urlMain": "https://la.mail.ru",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "wizard",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -8554,7 +8555,7 @@
         "ru"
       ],
       "urlMain": "https://minecraftonly.ru",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -8639,7 +8640,7 @@
         "us"
       ],
       "urlMain": "https://www.mobile-files.com/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -8819,7 +8820,7 @@
         "pk"
       ],
       "urlMain": "https://www.movie-list.com",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -8859,7 +8860,7 @@
         "us"
       ],
       "urlMain": "https://www.mpgh.net/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -9873,7 +9874,7 @@
       "engine": "vBulletin",
       "rank": 4840375,
       "urlMain": "http://p38forum.com",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "red",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -10193,7 +10194,7 @@
         "ru"
       ],
       "urlMain": "https://pw.mail.ru/",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "wizard",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -10216,7 +10217,7 @@
         "ru"
       ],
       "urlMain": "http://pesiq.ru/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -11233,7 +11234,7 @@
         "music"
       ],
       "urlMain": "http://www.rap-royalty.com",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "red",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -11365,7 +11366,7 @@
         "ru"
       ],
       "urlMain": "http://www.redorchestra.ru",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -11484,7 +11485,7 @@
         "ru"
       ],
       "urlMain": "https://rev.mail.ru",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "wizard",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -11523,7 +11524,7 @@
         "ru"
       ],
       "urlMain": "https://www.rlocman.ru",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "elnat",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -11700,7 +11701,7 @@
         "us"
       ],
       "urlMain": "https://www.rpgwatch.com",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "blue",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -11821,7 +11822,7 @@
         "ru"
       ],
       "urlMain": "http://www.russian.fi/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -12532,7 +12533,7 @@
         "ru"
       ],
       "urlMain": "https://solaris-club.net",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -12802,7 +12803,7 @@
         "ru"
       ],
       "urlMain": "http://statistika.ru",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "hamam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -12900,7 +12901,7 @@
         "ru"
       ],
       "urlMain": "https://www.stratege.ru",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "blue",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -13199,7 +13200,7 @@
         "ru"
       ],
       "urlMain": "https://tanks.mail.ru",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "red",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -13751,7 +13752,7 @@
         "in"
       ],
       "urlMain": "https://www.trainsim.com/",
-      "urlSubpath": "vbts",
+      "urlSubpath": "/vbts",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -13986,7 +13987,7 @@
         "ru"
       ],
       "urlMain": "http://tv-games.ru/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "adam",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -14632,7 +14633,7 @@
         "ru"
       ],
       "urlMain": "https://wf.mail.ru",
-      "urlSubpath": "forums",
+      "urlSubpath": "/forums",
       "username_claimed": "wizard",
       "username_unclaimed": "noonewouldeverusethis7"
     },
@@ -14961,7 +14962,7 @@
         "us"
       ],
       "urlMain": "http://wirednewyork.com/",
-      "urlSubpath": "forum",
+      "urlSubpath": "/forum",
       "username_claimed": "blue",
       "username_unclaimed": "noonewouldeverusethis7"
     },

maigret/sites.py

@@ -1,8 +1,5 @@
-"""Sherlock Sites Information Module
+"""Maigret Sites Information"""
-
+from __future__ import annotations
-This module supports storing information about web sites.
-This is the raw data that will be used to search for usernames.
-"""
 import json
 import operator
 import sys
@@ -10,8 +7,14 @@ import sys
 import requests
 
 
-class SiteInformation():
+class MaigretEngine:
-    def __init__(self, name, url_home, url_username_format, popularity_rank,
+    def __init__(self, name, *args, **kwargs):
+        self.name = name
+        self.__dict__.update(kwargs)
+
+
+class MaigretSite:
+    def __init__(self, name, url_main, url_username_format, popularity_rank,
                  username_claimed, username_unclaimed,
                  information):
         """Create Site Information Object.
@@ -21,7 +24,7 @@ class SiteInformation():
         Keyword Arguments:
         self                   -- This object.
         name                   -- String which identifies site.
-        url_home               -- String containing URL for home of site.
+        url_main               -- String containing URL for home of site.
         url_username_format    -- String containing URL for Username format
                                   on site.
                                   NOTE:  The string should contain the
@@ -55,7 +58,7 @@ class SiteInformation():
         """
 
         self.name = name
-        self.url_home = url_home
+        self.url_main = url_main
         self.url_username_format = url_username_format
 
         if (popularity_rank is None) or (popularity_rank == 0):
@@ -66,105 +69,56 @@ class SiteInformation():
         self.username_claimed = username_claimed
         self.username_unclaimed = username_unclaimed
         self.information = information
+        self.disabled = information.get('disabled', False)
+        self.similar_search = information.get('similarSearch', False)
+        self.ignore_403 = information.get('ignore_403', False)
+        self.tags = information.get('tags', [])
+
+        self.type = information.get('type', 'username')
+        self.headers = information.get('headers', {})
+        self.errors = information.get('errors', {})
+        self.url_subpath = information.get('urlSubpath', '')
+        self.regex_check = information.get('regexCheck', None)
+        self.url_probe = information.get('urlProbe', None)
+        self.check_type = information.get('errorType', '')
+        self.request_head_only = information.get('request_head_only', '')
+
+        self.presense_strs = information.get('presenseStrs', [])
+        self.absence_strs = information.get('errorMsg', [])
+        self.request_future = None
 
-        return
 
     def __str__(self):
-        """Convert Object To String.
+        return f"{self.name} ({self.url_main})"
-
-        Keyword Arguments:
-        self                   -- This object.
-
-        Return Value:
-        Nicely formatted string to get information about this object.
-        """
-
-        return f"{self.name} ({self.url_home})"
 
 
-class SitesInformation():
+class MaigretDatabase:
-    def __init__(self, data_file_path=None):
+    def __init__(self):
-        """Create Sites Information Object.
+        self._sites = []
+        self._engines = []
 
-        Contains information about all supported web sites.
+    @property
+    def sites(self: MaigretDatabase):
+        return self._sites
 
-        Keyword Arguments:
+    @property
-        self                   -- This object.
+    def sites_dict(self):
-        data_file_path         -- String which indicates path to data file.
+        return {site.name: site for site in self._sites}
-                                  The file name must end in ".json".
+    
 
-                                  There are 3 possible formats:
+    @property
-                                   * Absolute File Format
+    def engines(self: MaigretDatabase):
-                                     For example, "c:/stuff/data.json".
+        return self._engines
-                                   * Relative File Format
-                                     The current working directory is used
-                                     as the context.
-                                     For example, "data.json".
-                                   * URL Format
-                                     For example,
-                                     "https://example.com/data.json", or
-                                     "http://example.com/data.json".
 
-                                  An exception will be thrown if the path
-                                  to the data file is not in the expected
-                                  format, or if there was any problem loading
-                                  the file.
-
-                                  If this option is not specified, then a
-                                  default site list will be used.
-
-        Return Value:
-        Nothing.
-        """
-
-        # Ensure that specified data file has correct extension.
-        if ".json" != data_file_path[-5:].lower():
-            raise FileNotFoundError(f"Incorrect JSON file extension for "
-                                    f"data file '{data_file_path}'."
-                                    )
-
-        if (("http://" == data_file_path[:7].lower()) or
-                ("https://" == data_file_path[:8].lower())
-        ):
-            # Reference is to a URL.
-            try:
-                response = requests.get(url=data_file_path)
-            except Exception as error:
-                raise FileNotFoundError(f"Problem while attempting to access "
-                                        f"data file URL '{data_file_path}':  "
-                                        f"{str(error)}"
-                                        )
-            if response.status_code == 200:
-                try:
-                    site_data = response.json()
-                except Exception as error:
-                    raise ValueError(f"Problem parsing json contents at "
-                                     f"'{data_file_path}':  {str(error)}."
-                                     )
-            else:
-                raise FileNotFoundError(f"Bad response while accessing "
-                                        f"data file URL '{data_file_path}'."
-                                        )
-        else:
-            # Reference is to a file.
-            try:
-                with open(data_file_path, "r", encoding="utf-8") as file:
-                    try:
-                        data = json.load(file)
-                        site_data = data.get("sites")
-                        engines_data = data.get("engines")
-                    except Exception as error:
-                        raise ValueError(f"Problem parsing json contents at "
-                                         f"'{data_file_path}':  {str(error)}."
-                                         )
-            except FileNotFoundError as error:
-                raise FileNotFoundError(f"Problem while attempting to access "
-                                        f"data file '{data_file_path}'."
-                                        )
-
-        self.sites = {}
 
+    def load_from_json(self: MaigretDatabase, json_data: dict) -> MaigretDatabase:
         # Add all of site information from the json file to internal site list.
+        site_data = json_data.get("sites")
+        engines_data = json_data.get("engines")
+
+        for engine_name in engines_data:
+            self._engines.append(MaigretEngine(engine_name, engines_data[engine_name]))
+
         for site_name in site_data:
             try:
                 site = {}
@@ -178,8 +132,7 @@ class SitesInformation():
 
                 site.update(site_user_info)
 
-                self.sites[site_name] = \
+                maigret_site = MaigretSite(site_name,
-                    SiteInformation(site_name,
                                     site["urlMain"],
                                     site["url"],
                                     popularity_rank,
@@ -187,15 +140,74 @@ class SitesInformation():
                                     site["username_unclaimed"],
                                     site
                                     )
+
+                self._sites.append(maigret_site)
             except KeyError as error:
-                raise ValueError(f"Problem parsing json contents at "
+                raise ValueError(f"Problem parsing json content for site {site_name}: "
-                                 f"'{data_file_path}' for site {site_name}:  "
                                  f"Missing attribute {str(error)}."
                                  )
 
-        return
+        return self
 
-    def site_name_list(self, popularity_rank=False):
+
+    def load_from_str(self: MaigretDatabase, db_str: str) -> MaigretDatabase:
+        try:
+            data = json.loads(db_str)
+        except Exception as error:
+            raise ValueError(f"Problem parsing json contents from str"
+                             f"'{db_str[:50]}'...:  {str(error)}."
+                             )
+
+        return self.load_from_json(data)
+
+
+    def load_from_url(self: MaigretDatabase, url: str) -> MaigretDatabase:
+        is_url_valid = url.startswith('http://') or url.startswith('https://')
+
+        if not is_url_valid:
+            return False
+
+        try:
+            response = requests.get(url=url)
+        except Exception as error:
+            raise FileNotFoundError(f"Problem while attempting to access "
+                                    f"data file URL '{url}':  "
+                                    f"{str(error)}"
+                                    )
+
+        if response.status_code == 200:
+            try:
+                data = response.json()
+            except Exception as error:
+                raise ValueError(f"Problem parsing json contents at "
+                                 f"'{url}':  {str(error)}."
+                                 )
+        else:
+            raise FileNotFoundError(f"Bad response while accessing "
+                                    f"data file URL '{url}'."
+                                    )
+
+        return self.load_from_json(data)
+
+
+    def load_from_file(self: MaigretDatabase, filename: str) -> MaigretDatabase:
+        try:
+            with open(filename, 'r', encoding='utf-8') as file:
+                try:
+                    data = json.load(file)
+                except Exception as error:
+                    raise ValueError(f"Problem parsing json contents from "
+                                     f"file '{filename}':  {str(error)}."
+                                     )
+        except FileNotFoundError as error:
+            raise FileNotFoundError(f"Problem while attempting to access "
+                                    f"data file '{filename}'."
+                                    )
+
+        return self.load_from_json(data)
+
+
+    def site_name_list(self: MaigretDatabase, popularity_rank=False):
         """Get Site Name List.
 
         Keyword Arguments:
@@ -223,27 +235,3 @@ class SitesInformation():
             site_names = sorted([site.name for site in self], key=str.lower)
 
         return site_names
-
-    def __iter__(self):
-        """Iterator For Object.
-
-        Keyword Arguments:
-        self                   -- This object.
-
-        Return Value:
-        Iterator for sites object.
-        """
-
-        for site_name in self.sites:
-            yield self.sites[site_name]
-
-    def __len__(self):
-        """Length For Object.
-
-        Keyword Arguments:
-        self                   -- This object.
-
-        Return Value:
-        Length of sites object.
-        """
-        return len(self.sites)

tests/test_sites.py

@@ -0,0 +1,49 @@
+"""Maigret Database test functions"""
+from maigret.sites import MaigretDatabase
+
+
+def test_load_empty_db_from_str():
+    db = MaigretDatabase()
+    db.load_from_str('{"engines": {}, "sites": {}}')
+
+    assert db.sites == []
+    assert db.engines == []
+
+
+def test_load_valid_db():
+    db = MaigretDatabase()
+    db.load_from_json({
+        'engines': {
+            "XenForo": {
+              "presenseStrs": ["XenForo"],
+              "site": {
+                "errorMsg": [
+                  "The specified member cannot be found. Please enter a member's entire name.",
+                ],
+                "errorType": "message",
+                "errors": {
+                  "You must be logged-in to do that.": "Login required"
+                },
+                "url": "{urlMain}{urlSubpath}/members/?username={username}"
+              }
+            },
+        },
+        'sites': {
+            "Amperka": {
+              "engine": "XenForo",
+              "rank": 121613,
+              "tags": [
+                "ru"
+              ],
+              "urlMain": "http://forum.amperka.ru",
+              "username_claimed": "adam",
+              "username_unclaimed": "noonewouldeverusethis7"
+            },
+        }
+    })
+
+    assert len(db.sites) == 1
+    assert len(db.engines) == 1
+
+    assert db.sites[0].name == 'Amperka'
+    assert db.engines[0].name == 'XenForo'