From 8ed8e5f2556ce346579fa68f290636e2481c313d Mon Sep 17 00:00:00 2001
From: Dmytro Bogovych <dmytro.bogovych@gmail.com>
Date: Tue, 19 Sep 2023 09:01:41 +0300
Subject: [PATCH] - initial implementation of standalone hotspot

---
 setup/setup_agent_gsm.sh |  4 +--
 src/agent_gsm.py         | 14 +++++++++--
 src/agent_point.py       | 54 ++++++++++++++++++++++++++++++++++++++++
 src/utils_qualtest.py    | 14 +++++++++--
 4 files changed, 80 insertions(+), 6 deletions(-)
 create mode 100644 src/agent_point.py

diff --git a/setup/setup_agent_gsm.sh b/setup/setup_agent_gsm.sh
index 9936379..a6aef55 100755
--- a/setup/setup_agent_gsm.sh
+++ b/setup/setup_agent_gsm.sh
@@ -10,8 +10,8 @@ INSTALL_DIR=agent_gsm
 GIT_SOURCE=https://git.sevana.biz/public/agent_gsm
 
 # Install prerequisites
-sudo apt install --assume-yes git mc python3 sox vim libffi-dev screen python3-pip python3-numpy
-sudo pip3 install pyyaml sox pyrabbit soundfile dbus_python pexpect pydub requests rabbitpy pydub
+sudo apt install --assume-yes git mc python3 sox vim libffi-dev screen python3-pip python3-numpy dnsmasq hostapd
+sudo pip3 install pyyaml sox pyrabbit soundfile dbus_python pexpect pydub requests rabbitpy pydub reachability bottle
 
 if [ -f "$INSTALL_DIR" ]; then
     rm -rf "$INSTALL_DIR"
diff --git a/src/agent_gsm.py b/src/agent_gsm.py
index f92873f..911d668 100644
--- a/src/agent_gsm.py
+++ b/src/agent_gsm.py
@@ -24,6 +24,7 @@ from bt_signal import SignalBoundaries
 from bt_call_controller import INTERRUPT_SIGNAL
 import bt_call_controller
 
+import agent_point
 
 CONFIG = AgentConfig()
 
@@ -436,6 +437,9 @@ def receive_signal(signal_number, frame):
     # Delete PID file
     remove_pid_on_exit()
     
+    # Stop optional access point
+    agent_point.stop()
+
     # Debugging info
     print(f'Got signal {signal_number} from {frame}')
     
@@ -447,7 +451,6 @@ def receive_signal(signal_number, frame):
     return
 
 
-
 # Check if Python version is ok
 assert sys.version_info >= (3, 6)
 
@@ -529,7 +532,11 @@ if __name__ == '__main__':
         if BACKEND.phone is None:
             utils.log_error(f'Failed to obtain information about {BACKEND.instance}. Exiting.')
             exit(EXIT_ERROR)
-    
+
+        if not BACKEND.online:
+            # Start own hotspot and API server
+            agent_point.start()
+
         # Cache phone information
         CACHE.put_phone(BACKEND.phone)
 
@@ -570,4 +577,7 @@ if __name__ == '__main__':
     # Close log file
     utils.close_log_file()
 
+    # Stop optional access point
+    agent_point.stop()
+
     sys.exit(EXIT_OK)
diff --git a/src/agent_point.py b/src/agent_point.py
new file mode 100644
index 0000000..efe6996
--- /dev/null
+++ b/src/agent_point.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python3
+import PyAccessPoint
+import bottle
+import multiprocessing
+from PyAccessPoint import pyaccesspoint
+class AccessPoint:
+    active: bool = False
+    ap: pyaccesspoint.AccessPoint = None
+
+    def __init__(self) -> None:
+        pass
+
+
+    def start(self):
+        if self.ap is not None:
+            return
+        
+        self.ap = pyaccesspoint.AccessPoint(ssid='agent_gsm', password='qwerty')
+        if not self.ap.start():
+            raise RuntimeError(f'Failed to start WiFi access point.')
+        
+    def stop(self):
+        if self.ap is None:
+            return
+        
+        if not self.ap.stop():
+            raise RuntimeError(f'Failed to stop Wifi access point')
+        self.ap = None
+
+ACCESS_POINT = AccessPoint()
+SERVER_PROCESS = None
+
+@bottle.route('/status')
+def web_status():
+    return "OK"
+
+def web_process():
+    bottle.run(host='0.0.0.0', port=8080)
+
+def start():
+    global SERVER_PROCESS
+
+    ACCESS_POINT.start()
+    SERVER_PROCESS = multiprocessing.Process(target=web_process)
+
+def stop():
+    ACCESS_POINT.stop()
+    SERVER_PROCESS.kill()
+
+
+if __name__ == '__main__':
+    start()
+    # Wait 120 seconds for tests
+    stop()
diff --git a/src/utils_qualtest.py b/src/utils_qualtest.py
index 03fce30..db6d9d5 100644
--- a/src/utils_qualtest.py
+++ b/src/utils_qualtest.py
@@ -66,12 +66,13 @@ def trace_function(frame, event, arg):
 class QualtestBackend:
     address: str
     instance: str
+    online: bool
 
     def __init__(self):
-        self.address = ""    
+        self.address = ""
         self.instance = ""
         self.__phone = None
-
+        self.online = False
 
     @property
     def phone(self) -> Phone:
@@ -190,8 +191,17 @@ class QualtestBackend:
                 response = urllib.request.urlopen(url, timeout=utils.NETWORK_TIMEOUT)
                 if response.getcode() != 200:
                     raise RuntimeError(f'Failed to load phone definition from server. Error code: {response.getcode()}')
+                
+                # Consider backend as working one
+                self.online = True
+            
             except Exception as e:
                 utils.log_error(f'Problem when loading the phone definition from backend. Error: {str(e)}')
+                
+                # Consider backend as non-working
+                self.online = False
+
+                # Try to get data from the cache
                 r = cache.get_phone(self.instance)
                 if r is None:
                     raise RuntimeError(f'No cached phone definition.')