kopia lustrzana https://github.com/tayfunulu/WiFiManager
323 wiersze
9.8 KiB
Python
323 wiersze
9.8 KiB
Python
import network
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import socket
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import ure
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import time
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ap_ssid = "WifiManager"
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ap_password = "tayfunulu"
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ap_authmode = 3 # WPA2
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NETWORK_PROFILES = 'wifi.dat'
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wlan_ap = network.WLAN(network.AP_IF)
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wlan_sta = network.WLAN(network.STA_IF)
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server_socket = None
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def get_connection():
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"""return a working WLAN(STA_IF) instance or None"""
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# First check if there already is any connection:
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if wlan_sta.isconnected():
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return wlan_sta
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connected = False
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try:
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# ESP connecting to WiFi takes time, wait a bit and try again:
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time.sleep(3)
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if wlan_sta.isconnected():
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return wlan_sta
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# Read known network profiles from file
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profiles = read_profiles()
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# Search WiFis in range
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wlan_sta.active(True)
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networks = wlan_sta.scan()
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AUTHMODE = {0: "open", 1: "WEP", 2: "WPA-PSK", 3: "WPA2-PSK", 4: "WPA/WPA2-PSK"}
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for ssid, bssid, channel, rssi, authmode, hidden in sorted(networks, key=lambda x: x[3], reverse=True):
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ssid = ssid.decode('utf-8')
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encrypted = authmode > 0
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print("ssid: %s chan: %d rssi: %d authmode: %s" % (ssid, channel, rssi, AUTHMODE.get(authmode, '?')))
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if encrypted:
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if ssid in profiles:
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password = profiles[ssid]
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connected = do_connect(ssid, password)
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else:
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print("skipping unknown encrypted network")
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else: # open
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connected = do_connect(ssid, None)
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if connected:
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break
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except OSError as e:
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print("exception", str(e))
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# start web server for connection manager:
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if not connected:
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connected = start()
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return wlan_sta if connected else None
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def read_profiles():
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with open(NETWORK_PROFILES) as f:
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lines = f.readlines()
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profiles = {}
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for line in lines:
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ssid, password = line.strip("\n").split(";")
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profiles[ssid] = password
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return profiles
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def write_profiles(profiles):
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lines = []
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for ssid, password in profiles.items():
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lines.append("%s;%s\n" % (ssid, password))
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with open(NETWORK_PROFILES, "w") as f:
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f.write(''.join(lines))
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def do_connect(ssid, password):
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wlan_sta.active(True)
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if wlan_sta.isconnected():
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return None
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print('Trying to connect to %s...' % ssid)
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wlan_sta.connect(ssid, password)
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for retry in range(200):
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connected = wlan_sta.isconnected()
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if connected:
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break
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time.sleep(0.1)
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print('.', end='')
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if connected:
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print('\nConnected. Network config: ', wlan_sta.ifconfig())
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else:
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print('\nFailed. Not Connected to: ' + ssid)
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return connected
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def send_header(client, status_code=200, content_length=None ):
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client.sendall("HTTP/1.0 {} OK\r\n".format(status_code))
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client.sendall("Content-Type: text/html\r\n")
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if content_length is not None:
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client.sendall("Content-Length: {}\r\n".format(content_length))
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client.sendall("\r\n")
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def send_response(client, payload, status_code=200):
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content_length = len(payload)
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send_header(client, status_code, content_length)
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if content_length > 0:
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client.sendall(payload)
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client.close()
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def handle_root(client):
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wlan_sta.active(True)
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ssids = sorted(ssid.decode('utf-8') for ssid, *_ in wlan_sta.scan())
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send_header(client)
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client.sendall("""\
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<html>
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<h1 style="color: #5e9ca0; text-align: center;">
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<span style="color: #ff0000;">
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Wi-Fi Client Setup
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</span>
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</h1>
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<form action="configure" method="post">
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<table style="margin-left: auto; margin-right: auto;">
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<tbody>
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""")
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while len(ssids):
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ssid = ssids.pop(0)
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client.sendall("""\
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<tr>
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<td colspan="2">
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<input type="radio" name="ssid" value="{0}" />{0}
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</td>
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</tr>
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""".format(ssid))
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client.sendall("""\
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<tr>
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<td>Password:</td>
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<td><input name="password" type="password" /></td>
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</tr>
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</tbody>
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</table>
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<p style="text-align: center;">
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<input type="submit" value="Submit" />
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</p>
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</form>
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<p> </p>
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<hr />
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<h5>
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<span style="color: #ff0000;">
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Your ssid and password information will be saved into the
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"%(filename)s" file in your ESP module for future usage.
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Be careful about security!
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</span>
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</h5>
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<hr />
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<h2 style="color: #2e6c80;">
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Some useful infos:
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</h2>
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<ul>
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<li>
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Original code from <a href="https://github.com/cpopp/MicroPythonSamples"
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target="_blank" rel="noopener">cpopp/MicroPythonSamples</a>.
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</li>
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<li>
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This code available at <a href="https://github.com/tayfunulu/WiFiManager"
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target="_blank" rel="noopener">tayfunulu/WiFiManager</a>.
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</li>
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</ul>
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</html>
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""" % dict(filename=NETWORK_PROFILES))
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client.close()
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def handle_configure(client, request):
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match = ure.search("ssid=([^&]*)&password=(.*)", request)
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if match is None:
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send_response(client, "Parameters not found", status_code=400)
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return False
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# version 1.9 compatibility
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try:
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ssid = match.group(1).decode("utf-8").replace("%3F", "?").replace("%21", "!")
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password = match.group(2).decode("utf-8").replace("%3F", "?").replace("%21", "!")
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except Exception:
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ssid = match.group(1).replace("%3F", "?").replace("%21", "!")
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password = match.group(2).replace("%3F", "?").replace("%21", "!")
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if len(ssid) == 0:
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send_response(client, "SSID must be provided", status_code=400)
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return False
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if do_connect(ssid, password):
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response = """\
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<html>
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<center>
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<br><br>
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<h1 style="color: #5e9ca0; text-align: center;">
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<span style="color: #ff0000;">
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ESP successfully connected to WiFi network %(ssid)s.
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</span>
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</h1>
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<br><br>
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</center>
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</html>
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""" % dict(ssid=ssid)
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send_response(client, response)
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time.sleep(1)
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wlan_ap.active(False)
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try:
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profiles = read_profiles()
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except OSError:
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profiles = {}
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profiles[ssid] = password
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write_profiles(profiles)
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time.sleep(5)
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return True
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else:
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response = """\
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<html>
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<center>
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<h1 style="color: #5e9ca0; text-align: center;">
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<span style="color: #ff0000;">
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ESP could not connect to WiFi network %(ssid)s.
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</span>
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</h1>
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<br><br>
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<form>
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<input type="button" value="Go back!" onclick="history.back()"></input>
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</form>
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</center>
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</html>
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""" % dict(ssid=ssid)
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send_response(client, response)
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return False
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def handle_not_found(client, url):
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send_response(client, "Path not found: {}".format(url), status_code=404)
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def stop():
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global server_socket
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if server_socket:
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server_socket.close()
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server_socket = None
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def start(port=80):
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global server_socket
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addr = socket.getaddrinfo('0.0.0.0', port)[0][-1]
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stop()
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wlan_sta.active(True)
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wlan_ap.active(True)
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wlan_ap.config(essid=ap_ssid, password=ap_password, authmode=ap_authmode)
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server_socket = socket.socket()
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server_socket.bind(addr)
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server_socket.listen(1)
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print('Connect to WiFi ssid ' + ap_ssid + ', default password: ' + ap_password)
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print('and access the ESP via your favorite web browser at 192.168.4.1.')
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print('Listening on:', addr)
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while True:
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if wlan_sta.isconnected():
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wlan_ap.active(False)
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return True
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client, addr = server_socket.accept()
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print('client connected from', addr)
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try:
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client.settimeout(5.0)
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request = b""
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try:
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while "\r\n\r\n" not in request:
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request += client.recv(512)
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except OSError:
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pass
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# Handle form data from Safari on macOS and iOS; it sends \r\n\r\nssid=<ssid>&password=<password>
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try:
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request += client.recv(1024)
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print("Received form data after \\r\\n\\r\\n(i.e. from Safari on macOS or iOS)")
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except OSError:
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pass
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print("Request is: {}".format(request))
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if "HTTP" not in request: # skip invalid requests
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continue
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# version 1.9 compatibility
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try:
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url = ure.search("(?:GET|POST) /(.*?)(?:\\?.*?)? HTTP", request).group(1).decode("utf-8").rstrip("/")
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except Exception:
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url = ure.search("(?:GET|POST) /(.*?)(?:\\?.*?)? HTTP", request).group(1).rstrip("/")
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print("URL is {}".format(url))
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if url == "":
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handle_root(client)
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elif url == "configure":
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handle_configure(client, request)
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else:
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handle_not_found(client, url)
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finally:
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client.close()
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