Indicator of a running macproxy daemon in the webapp (#436)

* Support for downloading properties files

* Show extra message when unzipping properties file

* Add logic to unzip method

* Move unzipped properties into CFG_DIR

* Better status message

* Cleanup

* Generic process introspection method

* Show macproxy status in the webapp

src/web/pi_cmds.py

@@ -51,15 +51,16 @@ def running_env():
     return {"git": ra_git_version, "env": pi_version}
 
 
-def running_netatalk():
+def running_proc(daemon):
     """
-    Returns (int) afpd, which is the number of afpd processes currently running
+    Takes (str) daemon
+    Returns (int) proc, which is the number of processes currently running
     """
     process = subprocess.run(["ps", "aux"], capture_output=True)
     output = process.stdout.decode("utf-8")
     from re import findall
-    afpd = findall("afpd", output)
-    return len(afpd)
+    proc = findall(daemon, output)
+    return len(proc)
 
 
 def is_bridge_setup():
@@ -82,6 +83,24 @@ def disk_space():
     total, used, free = disk_usage(__file__)
     return {"total": total, "used": used, "free": free}
 
+
+def get_ip_address():
+    """
+    Use a mock socket connection to identify the Pi's IP address
+    """
+    from socket import socket, AF_INET, SOCK_DGRAM
+    sock = socket(AF_INET, SOCK_DGRAM)
+    try:
+        # mock ip address; doesn't have to be reachable
+        sock.connect(('10.255.255.255', 1))
+        ip_addr = sock.getsockname()[0]
+    except Exception:
+        ip_addr = '127.0.0.1'
+    finally:
+        sock.close()
+    return ip_addr
+
+
 def introspect_file(file_path, re_term):
     """
     Takes a (str) file_path and (str) re_term in regex format
@@ -96,4 +115,4 @@ def introspect_file(file_path, re_term):
     for line in ifile:
         if match(re_term, line):
             return True
-    return False
+    return False

src/web/templates/index.html

@@ -317,6 +317,11 @@
         </td>
     </tr>
 </table>
+{% if macproxy_configured %}
+<p><small>macproxy is running at {{ ip_addr }} port 5000</small></p>
+{% else %}
+<p><small>Install <a href="https://github.com/akuker/RASCSI/wiki/Vintage-Web-Proxy#macproxy">macproxy</a> to browse the Web with your vintage browser.</small></p>
+{% endif %}
 
 <hr/>
 <details>

src/web/web.py

@@ -36,9 +36,10 @@ from pi_cmds import (
     reboot_pi,
     running_env,
     systemd_service,
-    running_netatalk,
+    running_proc,
     is_bridge_setup,
     disk_space,
+    get_ip_address,
     introspect_file,
 )
 from ractl_cmds import (
@@ -112,7 +113,9 @@ def index():
     return render_template(
         "index.html",
         bridge_configured=is_bridge_setup(),
-        netatalk_configured=running_netatalk(),
+        netatalk_configured=running_proc("afpd"),
+        macproxy_configured=running_proc("macproxy"),
+        ip_addr=get_ip_address(),
         devices=formatted_devices,
         files=sorted_image_files,
         config_files=sorted_config_files,