Refactor micropub, add basic support for querying - source works great, the other two not so much

lemonauth/tokens.py

@@ -3,23 +3,18 @@ from jose import jwt
 from datetime import datetime, timedelta
 from django.contrib.auth import get_user_model
 from django.conf import settings
-from django.http import HttpResponse
+
+from micropub.views import error
 
 
 def auth(request):
     if 'HTTP_AUTHORIZATION' in request.META:
         auth = request.META.get('HTTP_AUTHORIZATION').split(' ')
         if auth[0] != 'Bearer':
-            return HttpResponse(
-                'authorisation with {0} not supported'.format(auth[0]),
-                content_type='text/plain',
-                status=400
-            )
+            return error.bad_req('auth type {0} not supported'.format(auth[0]))
         if len(auth) != 2:
-            return HttpResponse(
-                'invalid Bearer auth format, must be Bearer <token>',
-                content_type='text/plain',
-                status=400
+            return error.bad_req(
+                'invalid Bearer auth format, must be Bearer <token>'
             )
         token = auth[1]
     elif 'access_token' in request.POST:
@@ -27,20 +22,12 @@ def auth(request):
     elif 'access_token' in request.GET:
         token = request.GET.get('access_token')
     else:
-        return HttpResponse(
-            'authorisation required',
-            content_type='text/plain',
-            status=401
-        )
+        return error.unauthorized()
 
     try:
         token = decode(token)
     except Exception as e:
-        return HttpResponse(
-            'invalid micropub token',
-            content_type='text/plain',
-            status=403,
-        )
+        return error.forbidden()
 
     return MicropubToken(token)
 

micropub/views.py

@@ -1,102 +0,0 @@
-import json
-from django.http import HttpResponse
-from django.urls import reverse
-from django.utils.decorators import method_decorator
-from django.views import View
-from django.views.decorators.csrf import csrf_exempt
-from urllib.parse import urljoin
-
-from entries.jobs import ping_hub, send_mentions
-from entries.models import Cat, Entry
-from entries.kinds import Article, Note, Reply, Like, Repost
-from lemoncurry import utils
-from lemonauth import tokens
-
-
-def form_to_mf2(request):
-    properties = {}
-    post = request.POST
-    for key in post.keys():
-        if key.endswith('[]'):
-            key = key[:-2]
-        if key == 'access_token':
-            continue
-        properties[key] = post.getlist(key) + post.getlist(key + '[]')
-
-    type = []
-    if 'h' in properties:
-        type = ['h-' + p for p in properties['h']]
-        del properties['h']
-    return {'type': type, 'properties': properties}
-
-
-@method_decorator(csrf_exempt, name='dispatch')
-class MicropubView(View):
-    def post(self, request):
-        token = tokens.auth(request)
-        if hasattr(token, 'content'):
-            return token
-
-        normalise = {
-            'application/json': json.load,
-            'application/x-www-form-urlencoded': form_to_mf2,
-        }
-        if request.content_type not in normalise:
-            return HttpResponse(
-                'unsupported request type {0}'.format(request.content_type),
-                content_type='text/plain',
-                status=415,
-            )
-        body = normalise[request.content_type](request)
-        if 'type' not in body:
-            return utils.bad_req('mf2 object type required')
-        if body['type'] != ['h-entry']:
-            return utils.bad_req('only h-entry supported')
-
-        entry = Entry(author=token.user)
-        props = body.get('properties', {})
-        kind = Note
-        if 'name' in props:
-            entry.name = '\n'.join(props['name'])
-            kind = Article
-        if 'content' in props:
-            entry.content = '\n'.join(
-                c if isinstance(c, str) else c['html']
-                for c in props['content']
-            )
-        if 'in-reply-to' in props:
-            entry.in_reply_to = props['in-reply-to']
-            kind = Reply
-        if 'like-of' in props:
-            entry.like_of = props['like-of']
-            kind = Like
-        if 'repost-of' in props:
-            entry.repost_of = props['repost-of']
-            kind = Repost
-
-        cats = [Cat.objects.from_name(c) for c in props.get('category', [])]
-
-        entry.kind = kind.id
-        entry.save()
-        entry.cats = cats
-        entry.save()
-
-        base = utils.origin(request)
-        perma = urljoin(base, entry.url)
-        others = [urljoin(base, url) for url in (
-            reverse('home:index'),
-            reverse('entries:atom'),
-            reverse('entries:rss'),
-            reverse('entries:' + kind.index),
-            reverse('entries:' + kind.atom),
-            reverse('entries:' + kind.rss),
-        )] + [urljoin(base, cat.url) for cat in cats]
-        ping_hub.delay(perma, *others)
-        send_mentions.delay(perma)
-
-        res = HttpResponse(status=201)
-        res['Location'] = perma
-        return res
-
-
-micropub = MicropubView.as_view()

micropub/views/__init__.py

@@ -0,0 +1,20 @@
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_http_methods
+
+from lemonauth import tokens
+
+from .create import create
+from .query import query
+
+
+@csrf_exempt
+@require_http_methods(['GET', 'HEAD', 'POST'])
+def micropub(request):
+    token = tokens.auth(request)
+    if hasattr(token, 'content'):
+        return token
+    request.token = token
+    if request.method == 'POST':
+        return create(request)
+    if request.method in ('GET', 'HEAD'):
+        return query(request)

micropub/views/create.py

@@ -0,0 +1,87 @@
+import json
+from django.urls import reverse
+from django.http import HttpResponse
+from urllib.parse import urljoin
+
+from entries.jobs import ping_hub, send_mentions
+from entries.models import Cat, Entry
+from entries.kinds import Article, Note, Reply, Like, Repost
+from lemoncurry import utils
+
+from . import error
+
+
+def form_to_mf2(request):
+    properties = {}
+    post = request.POST
+    for key in post.keys():
+        if key.endswith('[]'):
+            key = key[:-2]
+        if key == 'access_token':
+            continue
+        properties[key] = post.getlist(key) + post.getlist(key + '[]')
+
+    type = []
+    if 'h' in properties:
+        type = ['h-' + p for p in properties['h']]
+        del properties['h']
+    return {'type': type, 'properties': properties}
+
+
+def create(request):
+    normalise = {
+        'application/json': json.load,
+        'application/x-www-form-urlencoded': form_to_mf2,
+    }
+    if request.content_type not in normalise:
+        return error.unsupported_type(request.content_type)
+    body = normalise[request.content_type](request)
+    if 'type' not in body:
+        return error.bad_req('mf2 object type required')
+    if body['type'] != ['h-entry']:
+        return error.bad_req('only h-entry supported')
+
+    entry = Entry(author=request.token.user)
+    props = body.get('properties', {})
+    kind = Note
+    if 'name' in props:
+        entry.name = '\n'.join(props['name'])
+        kind = Article
+    if 'content' in props:
+        entry.content = '\n'.join(
+            c if isinstance(c, str) else c['html']
+            for c in props['content']
+        )
+    if 'in-reply-to' in props:
+        entry.in_reply_to = props['in-reply-to']
+        kind = Reply
+    if 'like-of' in props:
+        entry.like_of = props['like-of']
+        kind = Like
+    if 'repost-of' in props:
+        entry.repost_of = props['repost-of']
+        kind = Repost
+
+    cats = [Cat.objects.from_name(c) for c in props.get('category', [])]
+
+    entry.kind = kind.id
+    entry.save()
+    entry.cats = cats
+    entry.save()
+
+    base = utils.origin(request)
+    perma = urljoin(base, entry.url)
+    others = [urljoin(base, url) for url in (
+        reverse('home:index'),
+        reverse('entries:atom'),
+        reverse('entries:rss'),
+        reverse('entries:' + kind.index),
+        reverse('entries:' + kind.atom),
+        reverse('entries:' + kind.rss),
+    )] + [urljoin(base, cat.url) for cat in cats]
+    ping_hub.delay(perma, *others)
+    send_mentions.delay(perma)
+
+    res = HttpResponse(status=201)
+    res['Location'] = perma
+    return res

micropub/views/error.py

@@ -0,0 +1,31 @@
+from django.http import JsonResponse
+
+
+def forbidden():
+    return res('forbidden', 403)
+
+
+def unauthorized():
+    return res('unauthorized', 401)
+
+
+def bad_req(msg):
+    return res('invalid_request', msg=msg)
+
+
+def bad_type(type):
+    msg = 'unsupported request type {0}'.format(type)
+    return res('invalid_request', 415, msg)
+
+
+def bad_scope(scope):
+    return res('insufficient_scope', 401, scope=scope)
+
+
+def res(error, status=400, msg=None, scope=None):
+    content = {'error': error}
+    if msg:
+        content['error_description'] = msg
+    if scope:
+        content['scope'] = scope
+    return JsonResponse(content, status=status)

micropub/views/query.py

@@ -0,0 +1,47 @@
+from django.http import JsonResponse
+from lemoncurry import requests
+from . import error
+
+
+def config(request):
+    config = syndicate_to(request)
+    return config
+
+
+def source(request):
+    get = request.GET
+    if 'url' not in get:
+        return error.bad_req('must specify url parameter for source query')
+    mf2 = requests.mf2(get['url']).to_dict(filter_by_type='h-entry')
+    if not mf2:
+        return error.bad_req('no h-entry at the requested url')
+    entry = mf2[0]
+    keys = get.getlist('properties', []) + get.getlist('properties[]', [])
+    if not keys:
+        return entry
+
+    props = entry['properties']
+    return {'properties': {k: props[k] for k in keys if k in props}}
+
+
+def syndicate_to(request):
+    return {'syndicate-to': []}
+
+
+queries = {
+    'config': config,
+    'source': source,
+    'syndicate-to': syndicate_to,
+}
+
+
+def query(request):
+    if 'q' not in request.GET:
+        return error.bad_req('must specify q parameter')
+    q = request.GET['q']
+    if q not in queries:
+        return error.bad_req('unsupported query {0}'.format(q))
+    res = queries[q](request)
+    if hasattr(res, 'content'):
+        return res
+    return JsonResponse(res)