RSS plugin not supporting HTTP authorization (#1741)

* RSS plugin not supporting HTTP authorization

This fork will fix the issue #781

* Add rpc login details to rss plugin if necessary

* updated docs

Co-authored-by: Patrick Kishino <patrick.a.kishino@gmail.com>

docs/rss-plugin.md

@@ -7,3 +7,32 @@ $ docker run -d \
       --name "transmission-rss" \
       haugene/transmission-rss
 ```
+At first start a transission-rss.conf file will be created in /etc if no manual one is mounted
+A manual transmission-rss.conf file can be mounted into the container to add additional parameters, e.g. login details to rpc
+example:
+```
+$ docker run -d \
+      -v <transmission-rss.conf>:/etc/transmission-rss.conf \
+      --link <transmission-container>:transmission \
+      --name "transmission-rss" \
+      haugene/transmission-rss
+```
+
+transmission-rss.conf example
+
+```
+feeds:
+  - url: <placeholder>
+    download_path: <placeholder>
+    regexp: <placeholder>
+    
+server:
+  host: transmission
+  port: 9091
+  rpc_path: /transmission/rpc
+
+login:
+  username: <username>
+  password: <password>
+
+```

plugins/rss/start.sh

@@ -28,6 +28,12 @@ else
   else
     sed -i "s#regexp: placeholder#regexp: $rss_regex_esc#" /etc/transmission-rss.conf
   fi
+  if [[ $TRANSMISSION_RPC_ENABLED == 'true' ]] && [ -z $(grep login /etc/transmission-rss.conf) ]; then
+    echo "RPC enabled, adding login details to rss config as no login details exist"
+    printf "login:\n  username: $TRANSMISSION_RPC_USERNAME\n  password: $TRANSMISSION_RPC_PASSWORD" >>/etc/transmission-rss.conf
+  else
+    echo "Login already provided in config OR RPC does not seem to be enabled"
+  fi
 fi
 
 echo "Starting RSS plugin with the following config:"