Create a basic but functional micropub media endpoint :o

Pipfile

@@ -46,5 +46,6 @@ django-super-favicon = "*"
 django-redis = "*"
 gevent = "*"
 django-extensions = "*"
+python-magic = "*"
 
 [dev-packages]

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "d62130799f04a1649c0e6bd978dca2816500d94e27af5d21d1ec328dc795a2f8"
+            "sha256": "0347a58bdf44bc71022adb2ced6ae592ff1f7fd44520caee906f3e8e0e3730e4"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -571,44 +571,29 @@
             ],
             "version": "==1.5.3"
         },
+        "pyasn1": {
+            "hashes": [
+                "sha256:0d7f6e959fe53f3960a23d73f35e1fce61348b30915b6664309ca756de7c1f89",
+                "sha256:5a0db897b311d265cde49615cf783f1c78613138605cdd0f907ecfa5b2aba3ee",
+                "sha256:758cb50abddc03e4563fd9e7f03db56e3e87b58c0bd01247360326e5c0c7ffa5",
+                "sha256:7d626683e3d792cccc608da02498aff37ab4f3dafd8905d6bf755d11f9b26b43",
+                "sha256:a7efe807c4b83a859e2735c692b92ed7b567cfddc4163763412920041d876c2b",
+                "sha256:b5a9ca48055b9a20f6d1b3d68e38692e5431c86a0f99ea602e61294e891fee5b",
+                "sha256:c07d6e587b2f928366b1f67c09bda026a3e6fcc99e80a744dc67f8fca3895626",
+                "sha256:d258b0a71994f7770599835249cece1caef3c70def868c4915e6e5ca49b67d15",
+                "sha256:d5cd6ed995dba16fad0c521cfe31cd2d68400b53fcc2bce93326829be73ab6d1",
+                "sha256:d84c2aea3cf43780e9e6a19f4e4dddee9f6976519020e64e47c57e5c7a8c3dd2",
+                "sha256:e85895087905c65b5b594eb91f7522664c85545b147d5f4d4e7b1b07da8dcbdc",
+                "sha256:f81c96761fca60d64b1c9b79ec2e40cf9495a745cf570613079ef324aeb9672b"
+            ],
+            "version": "==0.4.2"
+        },
         "pycparser": {
             "hashes": [
                 "sha256:99a8ca03e29851d96616ad0404b4aad7d9ee16f25c9f9708a11faf2810f7b226"
             ],
             "version": "==2.18"
         },
-        "pycryptodome": {
-            "hashes": [
-                "sha256:043c82cd3dd3120286a1b325ace93000cf52abb13a067c3ecb6220f874fe4c30",
-                "sha256:0cdd73492859d853f60b8185715312dbca465879661e28d354d1cf5ea11860e7",
-                "sha256:15013007e393d0cc0e69f4329a47c4c8597b7f3d02c12c03f805405542f70c71",
-                "sha256:19d81b92bff837cdade735b9023808556bb4868e1ce194dad4d5ec4e2b2851f3",
-                "sha256:1ceb3e87605c4f0080115a8a00abf45f5df27b0166a37fd669fbff4523273cfc",
-                "sha256:2354a77051ed4a2959ce2aac508071eb3e42fc348ea39228b2eac335990bf508",
-                "sha256:27bd2878200690b050dca34f505b5c623532324b3de40267c1484784063134df",
-                "sha256:322f239e51fda80233762400a8975ab728639b571fa58545b95b9c44042af010",
-                "sha256:49a71eb990af30ff6276cfe201eb83ed3640ae989c1b5973f7b55a46c94232d1",
-                "sha256:4b5a2680008da3ac0cef2d3661597e0cbf8a3eb19eed35b859fd67e2de63eb85",
-                "sha256:6d34fe5134eb5d62368e21e6f203ac1770bc7273e9536c4a280121312c2de53a",
-                "sha256:733d5eb7e5ceed8b9d0b3c24c81f52c04cb5de6786461388204fceefe4456aa5",
-                "sha256:7c73d3798fe2946953768b788ce554c0d4b390780f5e73d63bd833241af27bfe",
-                "sha256:97af76f5200f15e97cac58d77f319dec40b4bada98de697c91a9517e63b41d1a",
-                "sha256:97cc46ff02b99dafdc2e0385b325cec0f8a15bf8b285d6ed1d7e4a3bc2067ce1",
-                "sha256:a561b59e0c3548eb649af381b7c38c6fd8392bbd4d0a8214794b2b761f405af4",
-                "sha256:ab2c633bfc23cf41be9281228517cb6f87879f4f1aeb154ed72bd53ab7cc83e9",
-                "sha256:adb54316998337f315520bbd8ef4d8bbd940b4ddfaef8ba1db3c137c5e499399",
-                "sha256:b4a3b710287eb1fc3e2cc1af018063f003530dff00c9ea4c55ae19bc1f3923cc",
-                "sha256:bcfdb66d6604882c3f96eea922552c2487cc0aec4b883cd217b9d341d2f8fad0",
-                "sha256:c08c053eb8716bbbd5e13e38f453b9e46a063e68df8659f3c421dcb7519fd381",
-                "sha256:e51da4ef9d9e2695a04044152f380c2db17adc9fc6fad8e24d863ead9cd548ed",
-                "sha256:e850e07f54dc3de9a1efdd59d227fcd1cb30cdd307dafdc647c79e8f30cf5032",
-                "sha256:ebc579c41fe26748dc1bad4f9105f08740ee28826293a28103b3875968695a5e",
-                "sha256:ed94cb1b4bf24be734f2bf2db3e8ea75f3914d2f8e684291bee54bbe4a5a9151",
-                "sha256:f5e19802295e63bdf83bb92849285c01f7167840efb1c1e08507a50b10ba7efa",
-                "sha256:fc569682f012b1f62f8d28d8f9bc71f1de67648cd1bc124ef8ccf8db4edfc28a"
-            ],
-            "version": "==3.6.1"
-        },
         "pytest": {
             "hashes": [
                 "sha256:54713b26c97538db6ff0703a12b19aeaeb60b5e599de542e7fca0ec83b9038e8",
@@ -633,11 +618,19 @@
         },
         "python-jose": {
             "hashes": [
-                "sha256:391f860dbe274223d73dd87de25e4117bf09e8fe5f93a417663b1f2d7b591165",
+                "sha256:e06dd2e5e9125da79b519ff2652b8c666d64a5ea228fcd9862e0b29a534ccc53",
-                "sha256:3b35cdb0e55a88581ff6d3f12de753aa459e940b50fe7ca5aa25149bc94cb37b"
+                "sha256:e8255fb3cc524c04f4c790547a6215468f2a32d3a866424175523359e69f3aeb"
             ],
             "index": "pypi",
-            "version": "==2.0.2"
+            "version": "==3.0.0"
+        },
+        "python-magic": {
+            "hashes": [
+                "sha256:f2674dcfad52ae6c49d4803fa027809540b130db1dec928cfbb9240316831375",
+                "sha256:f3765c0f582d2dfc72c15f3b5a82aecfae9498bd29ca840d72f37d7bd38bfcd5"
+            ],
+            "index": "pypi",
+            "version": "==0.4.15"
         },
         "python-memcached": {
             "hashes": [
@@ -730,6 +723,13 @@
             ],
             "version": "==0.10.0"
         },
+        "rsa": {
+            "hashes": [
+                "sha256:25df4e10c263fb88b5ace923dd84bf9aa7f5019687b5e55382ffcdb8bede9db5",
+                "sha256:43f682fea81c452c98d09fc316aae12de6d30c4b5c84226642cf8f8fd1c93abd"
+            ],
+            "version": "==3.4.2"
+        },
         "six": {
             "hashes": [
                 "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9",

lemoncurry/settings/base.py

@@ -12,6 +12,7 @@ https://docs.djangoproject.com/en/1.11/ref/settings/
 
 from os import path
 
+APPEND_SLASH = False
 
 ADMINS = [
     ('dani', 'dani@00dani.me'),

lemoncurry/utils.py

@@ -26,6 +26,10 @@ def origin(request):
     return '{0}://{1}'.format(request.scheme, request.site.domain)
 
 
+def absolute_url(request, url):
+    return urljoin(origin(request), url)
+
+
 def uri(request):
     return origin(request) + request.path
 

micropub/urls.py

@@ -1,7 +1,9 @@
 from django.urls import path
-from . import views
+from .views import micropub
+from .views.media import media
 
 app_name = 'micropub'
 urlpatterns = (
-    path('', views.micropub, name='micropub'),
+    path('', micropub, name='micropub'),
+    path('/media', media, name='media'),
 )

micropub/views/media.py

@@ -0,0 +1,54 @@
+import hashlib
+
+from django.core.files.storage import default_storage as store
+from django.http import HttpResponse
+from django.views.decorators.csrf import csrf_exempt
+from django.views.decorators.http import require_POST
+import magic
+
+from lemonauth import tokens
+from lemoncurry.utils import absolute_url
+from . import error
+
+ACCEPTED_MEDIA_TYPES = (
+    'image/jpeg',
+    'image/png',
+)
+
+
+@csrf_exempt
+@require_POST
+def media(request):
+    token = tokens.auth(request)
+    if hasattr(token, 'content'):
+        return token
+    if 'file' not in request.FILES:
+        return error.bad_req(
+            "a file named 'file' must be provided to the media endpoint"
+        )
+    file = request.FILES['file']
+    if file.content_type not in ACCEPTED_MEDIA_TYPES:
+        return error.bad_req(
+            'unacceptable file type {0}'.format(file.content_type)
+        )
+
+    mime = None
+    sha = hashlib.sha256()
+    for chunk in file.chunks():
+        if mime is None:
+            mime = magic.from_buffer(chunk, mime=True)
+        sha.update(chunk)
+
+    if mime != file.content_type:
+        return error.bad_req(
+            'detected file type {0} did not match specified file type {1}'
+            .format(mime, file.content_type)
+        )
+
+    path = 'mp/{0[0]}/{2}.{1}'.format(*mime.split('/'), sha.hexdigest())
+    path = store.save(path, file)
+    url = absolute_url(request, store.url(path))
+
+    res = HttpResponse(status=201)
+    res['Location'] = url
+    return res

micropub/views/query.py

@@ -1,10 +1,13 @@
 from django.http import JsonResponse
+from django.urls import reverse
 from lemoncurry import requests
+from lemoncurry.utils import absolute_url
 from . import error
 
 
 def config(request):
     config = syndicate_to(request)
+    config['media-endpoint'] = absolute_url(request, reverse('micropub:media'))
     return config