Uni/CZI_presence_detector
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Add frontend, improve upload script

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This commit is contained in:
JonOfUs 2023-08-12 17:23:33 +02:00
parent 4d28f80980
commit dee770c395
9 changed files with 167 additions and 7 deletions
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public/bootstrap/css/bootstrap.min.css vendored Normal file
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<?php
$page_title = 'CZI Presence Detector';
$present_file = 'present.json';
$present = json_decode(file_get_contents($present_file), true);
?>
<html>
<head>
<title><?php echo $page_title; ?></title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-4bw+/aepP/YC94hEpVNVgiZdgIC5+VKNBQNGCHeKRQN+PtmoHDEXuppvnDJzQIu9" crossorigin="anonymous">
<script src="/bootstrap/js/bootstrap.bundle.min.js" integrity="sha384-HwwvtgBNo3bZJJLYd8oVXjrBZt8cqVSpeBNS5n7C8IVInixGAoxmnlMuBnhbgrkm" crossorigin="anonymous"></script>
</head>
<body>
<nav class="navbar navbar-light bg-light justify-content-between" style="padding: 0">
<span class="navbar-brand mb-0 h1" style="padding-left: 1rem"><?php echo $page_title; ?></span>
</nav>
<div id="content" style="padding: 2rem;">
<h2>Jetzt gerade im CZI <small>(letztes Update von <?php echo date('H:i:s d.m.Y', $present["timestamp"]); ?>)</small></h2><br>
<table class="table">
<thead>
<tr>
<th>Name</th>
<th>MAC</th>
</tr>
</thead>
<?php
foreach ($present["identities"] as $identity) {
?>
<tr>
<td><?php echo $identity["name"]; ?></td>
<td><code><?php echo $identity["mac"]; ?></code></td>
</tr>
<?php
}
?>
</table>
</div>
</body>
</html>

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{"timestamp":1691853251,"identities":[{"mac":"ff:ff:ff:ff:ff:ff","name":"BROADCAST"}]}

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<?php
$secret_key = 'CHANGE-THIS';
$present_file = 'present.json';
// check for POST request
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
error_log('FAILED - not POST - '. $_SERVER['REQUEST_METHOD']);
http_response_code(405);
exit();
}
// get content type
$content_type = isset($_SERVER['CONTENT_TYPE']) ? strtolower(trim($_SERVER['CONTENT_TYPE'])) : '';
if ($content_type != 'application/json') {
error_log('FAILED - not application/json - '. $content_type);
http_response_code(400);
exit();
}
// get payload
$payload = trim(file_get_contents("php://input"));
if (empty($payload)) {
error_log('FAILED - no payload');
http_response_code(400);
exit();
}
// get header signature
$header_signature = isset($_SERVER['HTTP_X_HMAC_HASH']) ? $_SERVER['HTTP_X_HMAC_HASH'] : '';
if (empty($header_signature)) {
error_log('FAILED - header signature missing');
http_response_code(401);
exit();
}
// calculate payload signature
$payload_signature = hash_hmac('sha256', $payload, $secret_key, false);
// check payload signature against header signature
if ($header_signature !== $payload_signature) {
error_log('FAILED - payload signature');
http_response_code(401);
exit();
}
// convert json to array
$decoded = json_decode($payload, true);
// check for json decode errors
if (json_last_error() !== JSON_ERROR_NONE) {
error_log('FAILED - json decode - '. json_last_error());
http_response_code(400);
exit();
}
// success, do something
http_response_code(200);
$present = array(
"timestamp" => time(),
"identities" => $decoded
);
file_put_contents($present_file, json_encode($present));

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scan.sh
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#!/bin/bash #!/bin/bash
adapter=wlo1 adapter=wlan0
adapter_mon="${wlo1}mon" adapter_mon="${wlo1}mon"
# Check for root privileges # Check for root privileges

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upload.py
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import sys import sys
import yaml import yaml
import requests
import json
import hmac
import hashlib
IDENTITIES_PATH = "identities.yaml" IDENTITIES_PATH = "identities.yaml"
WEBHOOK_URL = "http://localhost:8080/update.php"
WEBHOOK_SECRET = "CHANGE-THIS"
def parse_wifi_map(map_path): def parse_wifi_map(map_path):
# read scan results
with open(map_path, 'r') as f: with open(map_path, 'r') as f:
wifi_map = yaml.safe_load(f) wifi_map = yaml.safe_load(f)
# read known identities
with open(IDENTITIES_PATH, 'r') as f: with open(IDENTITIES_PATH, 'r') as f:
identities = yaml.safe_load(f)['identities'] identities = yaml.safe_load(f)['identities']
print("Known identities:")
for identity in identities: for identity in identities:
print('mac = {}, name = {}'.format(identity['mac'],identity['name'])) print('mac = {}, name = {}'.format(identity['mac'],identity['name']))
devices = set() devices = set()
filtered_devices = [] filtered_devices = []
# filter scan results for known identities
for ssid in wifi_map: for ssid in wifi_map:
print('ssid = {}'.format(ssid)) #print('ssid = {}'.format(ssid))
ssid_node = wifi_map[ssid] ssid_node = wifi_map[ssid]
for bssid in ssid_node: for bssid in ssid_node:
print('\tbssid = {}'.format(bssid)) #print('\tbssid = {}'.format(bssid))
bssid_node = ssid_node[bssid] bssid_node = ssid_node[bssid]
if 'devices' in bssid_node: if 'devices' in bssid_node:
for device in bssid_node['devices']: for device in bssid_node['devices']:
devices |= {device} devices |= {device}
print('\t\tdevice = {}'.format(device)) #print('\t\tdevice = {}'.format(device))
for identity in identities: for identity in identities:
if identity['mac'] == device: if identity['mac'] == device:
filtered_devices.append(identity) filtered_devices.append(identity)
print('\n\nSSID count: {}, Device count: {}'.format(len(wifi_map), len(devices))) #print('\n\nSSID count: {}, Device count: {}'.format(len(wifi_map), len(devices)))
print('\nFiltered devices:') print('\nFiltered devices:')
print(filtered_devices) print(filtered_devices)
return filtered_devices
if __name__ == '__main__': if __name__ == '__main__':
wifi_map_path = 'wifi_map.yaml' wifi_map_path = 'wifi_map.yaml'
if len(sys.argv) > 1: if len(sys.argv) > 1:
wifi_map_path = sys.argv[1] wifi_map_path = sys.argv[1]
parse_wifi_map(wifi_map_path)
filtered_devices = parse_wifi_map(wifi_map_path)
# build request
json_payload = json.dumps(filtered_devices).encode("utf-8")
signature = hmac.new(
key=bytes(WEBHOOK_SECRET, "utf-8"),
msg=json_payload,
digestmod=hashlib.sha256
).hexdigest()
req_headers = {
'Content-Type': 'application/json',
'x-hmac-hash': signature
}
# send request
r = requests.post(url=WEBHOOK_URL, data=json_payload, headers=req_headers)
print("Upload response:")
print(r.status_code)