Set http referer header correctly in smartcam

kasa/transports/sslaestransport.py

@@ -7,6 +7,7 @@ import base64
 import hashlib
 import logging
 import secrets
+import socket
 import ssl
 from enum import Enum, auto
 from typing import TYPE_CHECKING, Any, cast
@@ -107,12 +108,7 @@ class SslAesTransport(BaseTransport):
         self._app_url = URL(f"https://{self._host_port}")
         self._token_url: URL | None = None
         self._ssl_context: ssl.SSLContext | None = None
-        ref = str(self._token_url) if self._token_url else str(self._app_url)
-        self._headers = {
-            **self.COMMON_HEADERS,
-            "Host": self._host_port,
-            "Referer": ref,
-        }
+        self._headers: dict | None = None
         self._seq: int | None = None
         self._pwd_hash: str | None = None
         self._username: str | None = None
@@ -187,6 +183,34 @@ class SslAesTransport(BaseTransport):
             )
         return self._ssl_context
 
+    async def _get_host_ip(self) -> str:
+        def get_ip() -> str:
+            #  From https://stackoverflow.com/a/28950776
+            s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+            s.settimeout(0)
+            try:
+                # doesn't even have to be reachable
+                s.connect(("10.254.254.254", 1))
+                ip = s.getsockname()[0]
+            except Exception:
+                ip = "127.0.0.1"
+            finally:
+                s.close()
+            return ip
+
+        loop = asyncio.get_running_loop()
+        return await loop.run_in_executor(None, get_ip)
+
+    async def _get_headers(self) -> dict:
+        if not self._headers:
+            this_ip = await self._get_host_ip()
+            self._headers = {
+                **self.COMMON_HEADERS,
+                "Referer": f"https://{this_ip}/",
+                "Host": self._host_port,
+            }
+        return self._headers
+
     async def send_secure_passthrough(self, request: str) -> dict[str, Any]:
         """Send encrypted message as passthrough."""
         if self._state is TransportState.ESTABLISHED and self._token_url:
@@ -207,7 +231,7 @@ class SslAesTransport(BaseTransport):
         tag = self.generate_tag(
             passthrough_request_str, self._local_nonce, self._pwd_hash, self._seq
         )
-        headers = {**self._headers, "Seq": str(self._seq), "Tapo_tag": tag}
+        headers = {**await self._get_headers(), "Seq": str(self._seq), "Tapo_tag": tag}
         self._seq += 1
         status_code, resp_dict = await self._http_client.post(
             url,
@@ -326,7 +350,7 @@ class SslAesTransport(BaseTransport):
         status_code, resp_dict = await http_client.post(
             self._app_url,
             json=body,
-            headers=self._headers,
+            headers=await self._get_headers(),
             ssl=await self._get_ssl_context(),
         )
         if status_code != 200:
@@ -443,7 +467,7 @@ class SslAesTransport(BaseTransport):
         status_code, resp_dict = await http_client.post(
             self._app_url,
             json=body,
-            headers=self._headers,
+            headers=await self._get_headers(),
             ssl=await self._get_ssl_context(),
         )
 

tests/transports/test_sslaestransport.py

@@ -27,7 +27,8 @@ from kasa.transports.sslaestransport import (
 )
 
 # Transport tests are not designed for real devices
-pytestmark = [pytest.mark.requires_dummy]
+# SslAesTransport use a socket to get it's own ip address
+pytestmark = [pytest.mark.requires_dummy, pytest.mark.enable_socket]
 
 MOCK_ADMIN_USER = get_default_credentials(DEFAULT_CREDENTIALS["TAPOCAMERA"]).username
 MOCK_PWD = "correct_pwd"  # noqa: S105