Add BookWyrm user-agent to http requests

This allows other software to identify BookWyrm in calls, as well as
will allow BookWyrm to differentiate between calls done from other
fediverse software and BookWyrm to answer with specific BookWyrm data.

bookwyrm/connectors/abstract_connector.py

@@ -8,7 +8,7 @@ import requests
 from requests import HTTPError
 from requests.exceptions import SSLError
 
-from bookwyrm import activitypub, models
+from bookwyrm import activitypub, models, settings
 
 
 class ConnectorException(HTTPError):
@@ -42,6 +42,7 @@ class AbstractMinimalConnector(ABC):
             '%s%s' % (self.search_url, query),
             headers={
                 'Accept': 'application/json; charset=utf-8',
+                'User-Agent': settings.USER_AGENT,
             },
         )
         if not resp.ok:
@@ -196,6 +197,7 @@ def get_data(url):
             url,
             headers={
                 'Accept': 'application/json; charset=utf-8',
+                'User-Agent': settings.USER_AGENT,
             },
         )
     except RequestError:
@@ -213,7 +215,12 @@ def get_data(url):
 def get_image(url):
     ''' wrapper for requesting an image '''
     try:
-        resp = requests.get(url)
+        resp = requests.get(
+            url,
+            headers={
+                'User-Agent': settings.USER_AGENT,
+            },
+        )
     except (RequestError, SSLError):
         return None
     if not resp.ok: