Camera improvements (#94)

* Add option to set camera url

* Update proxy configuration for camera

* Update 3Dprinter-OctoPrint camera documentation; add reverse proxy option.

3dprinter-octoprint/CHANGELOG.md

@@ -1,3 +1,6 @@
+## 2024.01.2
+  * Add option to pass webcam URL to proxy.
+
 ## 2024.01.1
 
   * Maintenance release:

3dprinter-octoprint/DOCS.md

@@ -1,16 +1,20 @@
 # Startup
 
-Set a network port in addon settings to be able to access the WebUI.
+Set a network port in add-on settings to be able to access the WebUI.
 
-# Addon configuration
+# Add-on configuration
 
 ## Trusted proxies
 
 *If you have placed a reverse proxy in front of Home Assistant*, by setting trusted proxies you should be able to use HTTPS. For more information, see [Caddy documentation](https://caddyserver.com/docs/caddyfile/directives/reverse_proxy).
 
+## Camera URL
+
+By entering a URL to a camera you can make it available at `<OctoPrint URL>/camera/`. Note that this means that anyone with access to your OctoPrint instance can access the stream (even if not signed in! https://community.octoprint.org/t/why-is-there-no-access-control-for-the-webcam-in-octoprint-why-is-my-webcam-always-on/233). **Making this secure is up to you!**
+
 # OctoPrint integration
 
-You can use the OctoPrint integration with this addon. Go to Home Assistant, add integration OctoPrint, and use the following:
+You can use the OctoPrint integration with this add-on. Go to Home Assistant, add integration OctoPrint, and use the following:
 - Host: `cce6f2d5-3dprinter-octoprint` (use the add-on hostname, the first part could differ).
 - port: 5000
 - Don't use SSL (leave unchecked)
@@ -19,9 +23,16 @@ Go to OctoPrint WebUI, you should see a request for authentication.
 
 # Camera
 
-This addon does not include a camera server, it has to be setup separately. 
+This add-on does not include a camera server, that has to be installed and setup separately.
 
-You could, for instance, use the addon [camera-mjpg-streamer](https://github.com/fredrikbaberg/ha-3dprinter-addons/tree/main/camera-mjpg-streamer) available in the same repository. Note that this method **only allows for snapshot**, it does **NOT** work for camera stream as this requires the browser/app used to directly access the stream.
+You could, for instance, use the add-on [camera-mjpg-streamer](https://github.com/fredrikbaberg/ha-3dprinter-addons/tree/main/camera-mjpg-streamer) available in the same repository. This will work for snapshots, but not necessarily for video as the video stream has to be available by the browser/app directly, **not just the host running OctoPrint**.
+
+Instead of exposing the video stream directly, you could try to use the `Camera URL` option. **Note that this is mostly untested.** In theory you should be able to:
+* Install the [camera-mjpg-streamer](https://github.com/fredrikbaberg/ha-3dprinter-addons/tree/main/camera-mjpg-streamer) add-on. Start it and make sure you can see the image from the camera in that add-on.
+* In options for this add-on, set `Camera URL` to hostname of the add-on where the camera is running, e.g. `http://cce6f2d5-camera-mjpg-streamer`.
+* In OctoPrint, set:
+    * `Stream URL` to `http://<octoprint URL>/camera/?action=stream`
+    * `Snapshot URL` to `http://<octoprint URL>/camera/?action=snapshot`. This will make it easier to check that it works, but should later be changed to the local URL, e.g. `http://cce6f2d5-camera-mjpg-streamer/?action=snapshot`.
 
 # Remote access
 

3dprinter-octoprint/config.yaml

@@ -1,5 +1,5 @@
 name: "3DPrinter-OctoPrint"
-version: "2024.01.1"
+version: "2024.01.2"
 slug: "3dprinter-octoprint"
 description: "OctoPrint as an addon, no additional bells and whistles."
 arch:
@@ -16,29 +16,18 @@ ports_description:
 devices:
   - "/dev/i2c-0"
   - "/dev/i2c-1"
-# - "/dev/mem"
-# - "/dev/gpiomem"
-# privileged:
-#   - SYS_RAWIO
-# apparmor: false
 gpio: true
 usb: true
 uart: true
 options:
   trusted_proxies: ""
-  # camera_url: "http://b7aa59c4-camera-mjpg-streamer"
+  camera_url: ""
-  # mode: normal
 schema:
   trusted_proxies: "str?"
-  # camera_url: "url?"
+  camera_url: "str?"
-  # mode: "list(normal|recovery|reverse_proxy_test|camera)?"
 image: ghcr.io/fredrikbaberg/ha-addon-3dprinter-octoprint-{arch}
-# codenotary:
 tmpfs: true
-# ingress: false
-# ingress_stream: false
 panel_icon: mdi:printer-3d
 panel_title: 3DPrinter-OctoPrint
-# stage: stable
 init: false
 realtime: true

3dprinter-octoprint/rootfs/etc/cont-init.d/proxy.sh

@@ -9,6 +9,7 @@ bashio::var.json \
     addon_hostname "$(bashio::addon.hostname)" \
     addon_ip "$(bashio::addon.ip_address)" \
     trusted_proxies "$(bashio::config 'trusted_proxies')" \
+    camera_url "$(bashio::config 'camera_url')" \
     | tempio \
         -template /usr/share/tempio/caddy/Caddyfile.internal_external.gtpl \
         -out /etc/caddy/sites-enabled/internal_external.caddy

3dprinter-octoprint/rootfs/usr/share/tempio/caddy/Caddyfile.internal_external.gtpl

@@ -2,6 +2,14 @@
 # * Home-Assistant OctoPrint integration.
 # * Accessing OctoPrint WebUI through external port.
 :5000 {
+	{{ if .camera_url }}
+	handle_path /camera* {
+		reverse_proxy {{ .camera_url }} {
+			trusted_proxies {{ .trusted_proxies }}
+			flush_interval -1
+		}
+	}
+	{{ end }}
 	reverse_proxy http://127.0.0.1:80 {
 		trusted_proxies {{ .trusted_proxies }}
 	}