Created
January 18, 2019 19:43
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HTTP server that allows for adding and authenticating a fingerprint with a Waveshare fingerprint scanner
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| #!/usr/bin/env python | |
| from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer | |
| import SocketServer | |
| import serial | |
| ser = serial.Serial("/dev/serial0", baudrate=19200, timeout = 5) | |
| def send_bytes(bytes): | |
| tosend = [0xF5] + bytes + [bytes[0]^bytes[4], 0xF5] | |
| ser.write(tosend[::-1]) | |
| def receive_bytes(): | |
| bytes = ser.read(8) | |
| barr = bytearray(bytes) | |
| return barr | |
| def verify_success(bytes): | |
| return len(bytes) == 8 and bytes[4] == 0x00 | |
| def add_fingerprint(): | |
| send_bytes([ 0x01, 0x00, 0x01, 0x01, 0x00 ]) | |
| bytes = receive_bytes() | |
| if not verify_success(bytes): | |
| return False | |
| send_bytes([ 0x02, 0x00, 0x01, 0x01, 0x00 ]) | |
| bytes = receive_bytes() | |
| if not verify_success(bytes): | |
| return False | |
| send_bytes([ 0x03, 0x00, 0x01, 0x01, 0x00 ]) | |
| bytes = receive_bytes() | |
| if not verify_success(bytes): | |
| return False | |
| return True | |
| def auth_fingerprint(): | |
| send_bytes([ 0x0C, 0x00, 0x00, 0x00, 0x00 ]) | |
| bytes = receive_bytes() | |
| return len(bytes) == 8 and bytes[4] == 0x01 | |
| class S(BaseHTTPRequestHandler): | |
| def _set_headers(self): | |
| self.send_response(200) | |
| self.send_header('Content-type', 'text/html') | |
| self.end_headers() | |
| def do_GET(self): | |
| result = auth_fingerprint() | |
| if result: | |
| self.send_response(200) | |
| else: | |
| self.send_response(403) | |
| self.send_header('Content-type', 'text/plain') | |
| self.end_headers() | |
| def do_HEAD(self): | |
| self._set_headers() | |
| def do_POST(self): | |
| self._set_headers() | |
| result = add_fingerprint() | |
| self.wfile.write("<html><body><h1>Fingerprint added: "+str(result)+"</h1></body></html>") | |
| def run(server_class=HTTPServer, handler_class=S, port=80): | |
| server_address = ('', port) | |
| httpd = server_class(server_address, handler_class) | |
| print 'Server started' | |
| httpd.serve_forever() | |
| if __name__ == "__main__": | |
| from sys import argv | |
| if len(argv) == 2: | |
| run(port=int(argv[1])) | |
| else: | |
| run() |
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