Send Zebra Certificate through socket using ZPL command

import socket import os from _thread import * from flask import Flask, request import re import zebra def zebra (cert_test, hosts): port = 9100 for host in hosts: try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(1) result = s.connect_ex((host, port)) print(result) if result == 0: s.send(str.encode(cert_test)) print (s.recv(1024)) #ACK return (" [*] Port " + str(port) + " open!" + host) else: return("[+] CLOSE HOST " + host + ":" + str(port)) except: pass hosts = ['10.XX.XX.XX'] #I'm sending the certificate in binary format Example: "2D2D2D2D2D424" cert_test = cert_test = "^XA~DYE:WEBLINK1_CA,A,NRD,2182,,A,<My Cert in Binary>^XZ" zebra (cert_test,hosts)

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3 Replies

P Pedro Zapata 1 year 1 month ago

Hi everyone,

Now i'm using another method, sending the whole file over a tcp socket with a .zpl file. But the result it's the same, the printer don't read the certificate. Can anyone help me?

import socket
import tqdm
import os


separator = "<SEPARATOR>"
buffer_size = 4096


host = "10.27.XX.XX"


port = 9100

filename = "prueba.zpl"

filesize = os.path.getsize(filename)

s = socket.socket()

print (f"[+] Conectando a la impresora {host}:{port}")
s.connect((host, port))
print ("[+] Conectado.")

s.send(f"{filename}{separator}{filesize}".encode())
#s.send(str.encode(filename))

progress = tqdm.tqdm(range(filesize), f"Sending {filename}", unit="B", unit_scale=True, unit_divisor=1024)

with open(filename, "rb") as f:
    while True:
        # read the bytes from the file
        bytes_read = f.read(buffer_size)
        if not bytes_read:
            # file transmitting is done
            break
        # we use sendall to assure transimission in 
        # busy networks
        s.sendall(bytes_read)
        # update the progress bar
        progress.update(len(bytes_read))
# close the socket
s.close()

! CISDFCRC16
BA0B
privkey.nrd
0000037B
E3AF
-----BEGIN RSA PRIVATE KEY-----
MIICXgIBAAKBgQDQXu/E9YuGlScfWQepZa8Qe/1mJRpmk8oPhPVvam/4M5/WaWQp
3/p1f8J17/hDH8fFq5Dnx3/tHaU7A4SKO8GeghX5hnp/mt4tuQEvsXkCrcgS1puz
z5dbO7ThhuzxYClnr7uiXPvSRXawgwDTPas+0q/6gHeUSXtA0EofuIyv7wIDAQAB
AoGBAJPnf3wn6wT5pE59DJIyakRiLmkt1wKOzvObJfgS7i2Yv1EbeAy9PnPe3vKG
Bovm6A+oi2/qTSTLUTiFc7QHXJPVxLmRiHMbf1Q8j+VJkGTpWt8EY/Px+HSM2HAP
jqd+Im0IiE9RQPsxWQH9UaauF6nl5gIfMF74BIPsVzFXLFfxAkEA6zSrCKCycE/P
14cjZibnLiWxdL3U3I9eWuhmIS37RB6UJF

prueba.zpl file

S Steven Si 1 year 1 month ago

The printer needs a reset in order to read the cert file. Can you try to FTP the cert to the printer's E: drive to see if the printer reads the cert file? If the printer still doesn't read the cert file after the FTP, it might be the cert file is not valid.

P Pedro Zapata 1 year 1 month ago

Thanks Steven i will try with other Cert.