Add API function to list mirrored accounts

server.py

@@ -1,6 +1,7 @@
 from http.server import BaseHTTPRequestHandler, HTTPServer
 import igmirror
 import sys
+import os
 import re
 
 class MyServer(BaseHTTPRequestHandler):
@@ -13,7 +14,12 @@ class MyServer(BaseHTTPRequestHandler):
         # example: /shakira/add
         path = self.path.strip('/')
         parts = path.split('/')
-        if len(parts) == 2:
+        if len(parts) == 1:
+            if parts[0] == 'list':
+                accounts = os.listdir('./db/accounts')
+                for acc in sorted(set(accounts)):
+                    self.wfile.write(bytes(acc+'\n', "utf-8"))
+        elif len(parts) == 2:
             # a wilcard select all accounts
             if parts[0] == '*':
                 if parts[1].lower() == 'update':