commit 326179e0017f68e6a7c3acbc96d230d07f0c7ac0
Author: Quentin Dufour <quentin@deuxfleurs.fr>
Date:   Tue Mar 21 17:18:06 2023 +0100

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..99d7a65
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+homeserver.signing_key
+.venv
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..dd2f341
--- /dev/null
+++ b/main.py
@@ -0,0 +1,46 @@
+import json
+import requests
+
+from signedjson.key import generate_signing_key, get_verify_key, read_signing_keys
+from signedjson.sign import (
+    sign_json, verify_signed_json, SignatureVerifyException
+)
+
+
+# curl https://libera.chat/.well-known/matrix/server
+# curl 'https://libera.ems.host/_matrix/key/v2/server'
+
+def authorization_headers(origin_name, origin_signing_key,
+                          destination_name, request_method, request_target,
+                          content=None):
+    request_json = {
+         "method": request_method,
+         "uri": request_target,
+         "origin": origin_name,
+         "destination": destination_name,
+    }
+
+    if content is not None:
+        # Assuming content is already parsed as JSON
+        request_json["content"] = content
+
+    signed_json = sign_json(request_json, origin_name, origin_signing_key)
+
+    authorization_headers = []
+
+    for key, sig in signed_json["signatures"][origin_name].items():
+        authorization_headers.append(bytes(
+            "X-Matrix origin=\"%s\",destination=\"%s\",key=\"%s\",sig=\"%s\"" % (
+                origin_name, destination_name, key, sig),
+            encoding="utf-8"))
+
+    return ("Authorization", authorization_headers[0])
+
+sk = None
+with open('homeserver.signing_key', 'r') as k:
+  sk = read_signing_keys(k)[0]
+
+head_key, head_val = authorization_headers("deuxfleurs.fr", sk, "libera.chat", "GET", "/_matrix/federation/unstable/rooms/!FmBSWmHvlUJtFiEjrH:libera.chat/complexity")
+r = requests.get('https://libera.ems.host:443/_matrix/federation/unstable/rooms/!FmBSWmHvlUJtFiEjrH:libera.chat/complexity', headers = { head_key: head_val })
+print(r.json())
+
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..45d764f
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+signedjson==1.1.4
+requests==2.28.2