def asa_login(self):
"""
Handle ASA reaching privilege level 15 using login
twb-dc-fw1> login
Username: admin
Raises NetmikoAuthenticationException, if we do not reach privilege
level 15 after 10 loops.
"""
delay_factor = self.select_delay_factor(0)
i = 1
max_attempts = 10
self.write_channel("login" + self.RETURN)
output = self.read_until_pattern(pattern=r"login")
while i <= max_attempts:
time.sleep(0.5 * delay_factor)
output = self.read_channel()
if "sername" in output:
self.write_channel(self.username + self.RETURN)
elif "ssword" in output:
self.write_channel(self.password + self.RETURN)
elif "#" in output:
return
else:
self.write_channel("login" + self.RETURN)
i += 1
msg = "Unable to enter enable mode!"
raise NetmikoAuthenticationException(msg)
def _test_channel_read(self, count=40, pattern=""):
"""Since Keymile NOS always returns True on paramiko.connect() we
check the output for substring Login incorrect after connecting."""
output = super()._test_channel_read(count=count, pattern=pattern)
pattern = r"Login incorrect"
if re.search(pattern, output):
self.paramiko_cleanup()
msg = "Authentication failure: unable to connect"
msg += f"{self.device_type} {self.host}:{self.port}"
msg += self.RESPONSE_RETURN + "Login incorrect"
raise NetmikoAuthenticationException(msg)
else:
return output
async def session_preparation(self):
"""
Prepare the session after the connection has been established
Cisco WLC uses "config paging disable" to disable paging
"""
await asyncio.create_task(self._test_channel_read())
try:
self.set_base_prompt()
except ValueError:
msg = f"Authentication failed: {self.host}"
raise NetmikoAuthenticationException(msg)
self.disable_paging(command="config paging disable")
# Clear the read buffer
await asyncio.sleep(0.3 * self.global_delay_factor)
await asyncio.create_task(self.clear_buffer())
def telnet_login(
self,
pri_prompt_terminator=r"#\s*$",
alt_prompt_terminator=r">\s*$",
username_pattern=r"(Login|Username)",
pwd_pattern=r"Password",
delay_factor=1,
max_loops=20,
):
# set callback function to handle telnet options.
self.remote_conn.set_option_negotiation_callback(self._process_option)
delay_factor = self.select_delay_factor(delay_factor)
time.sleep(1 * delay_factor)
output = ""
return_msg = ""
i = 1
while i <= max_loops:
try:
output = self.read_channel()
return_msg += output
# Search for username pattern / send username
if re.search(username_pattern, output, flags=re.I):
self.write_channel(self.username + self.TELNET_RETURN)
time.sleep(1 * delay_factor)
output = self.read_channel()
return_msg += output
# Search for password pattern / send password
if re.search(pwd_pattern, output, flags=re.I):
self.write_channel(self.password + self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
output = self.read_channel()
return_msg += output
if re.search(pri_prompt_terminator, output,
flags=re.M) or re.search(
alt_prompt_terminator, output,
flags=re.M):
return return_msg
# Check if proper data received
if re.search(pri_prompt_terminator, output,
flags=re.M) or re.search(
alt_prompt_terminator, output, flags=re.M):
return return_msg
time.sleep(0.5 * delay_factor)
i += 1
except EOFError:
self.remote_conn.close()
msg = f"Login failed: {self.host}"
raise NetmikoAuthenticationException(msg)
# Last try to see if we already logged in
self.write_channel(self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
output = self.read_channel()
return_msg += output
if re.search(pri_prompt_terminator, output, flags=re.M) or re.search(
alt_prompt_terminator, output, flags=re.M):
return return_msg
msg = f"Login failed: {self.host}"
self.remote_conn.close()
raise NetmikoAuthenticationException(msg)
def telnet_login(
self,
pri_prompt_terminator=r"#\s*$",
alt_prompt_terminator=r">\s*$",
username_pattern=r"(?:user:|username|login|user name)",
pwd_pattern=r"assword",
delay_factor=1,
max_loops=20,
):
"""Telnet login. Can be username/password or just password."""
delay_factor = self.select_delay_factor(delay_factor)
time.sleep(1 * delay_factor)
output = ""
return_msg = ""
outer_loops = 3
inner_loops = int(max_loops / outer_loops)
i = 1
for _ in range(outer_loops):
while i <= inner_loops:
try:
output = self.read_channel()
return_msg += output
# Search for username pattern / send username
if re.search(username_pattern, output, flags=re.I):
# Sometimes username/password must be terminated with "\r" and not "\r\n"
self.write_channel(self.username + "\r")
time.sleep(1 * delay_factor)
output = self.read_channel()
return_msg += output
# Search for password pattern / send password
if re.search(pwd_pattern, output, flags=re.I):
# Sometimes username/password must be terminated with "\r" and not "\r\n"
self.write_channel(self.password + "\r")
time.sleep(0.5 * delay_factor)
output = self.read_channel()
return_msg += output
if re.search(
pri_prompt_terminator, output,
flags=re.M) or re.search(
alt_prompt_terminator, output, flags=re.M):
return return_msg
# Support direct telnet through terminal server
if re.search(
r"initial configuration dialog\? \[yes/no\]: ",
output):
self.write_channel("no" + self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
count = 0
while count < 15:
output = self.read_channel()
return_msg += output
if re.search(r"ress RETURN to get started",
output):
output = ""
break
time.sleep(2 * delay_factor)
count += 1
# Check for device with no password configured
if re.search(r"assword required, but none set", output):
self.remote_conn.close()
msg = "Login failed - Password required, but none set: {}".format(
self.host)
raise NetmikoAuthenticationException(msg)
# Check if proper data received
if re.search(pri_prompt_terminator, output,
flags=re.M) or re.search(
alt_prompt_terminator, output,
flags=re.M):
return return_msg
i += 1
except EOFError:
self.remote_conn.close()
msg = f"Login failed: {self.host}"
raise NetmikoAuthenticationException(msg)
# Try sending an <enter> to restart the login process
self.write_channel(self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
i = 1
# Last try to see if we already logged in
self.write_channel(self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
output = self.read_channel()
return_msg += output
if re.search(pri_prompt_terminator, output, flags=re.M) or re.search(
alt_prompt_terminator, output, flags=re.M):
return return_msg
self.remote_conn.close()
msg = f"Login failed: {self.host}"
raise NetmikoAuthenticationException(msg)
def telnet_login(
self,
pri_prompt_terminator=r"]\s*$",
alt_prompt_terminator=r">\s*$",
username_pattern=r"(?:user:|username|login|user name)",
pwd_pattern=r"assword",
delay_factor=1,
max_loops=20,
):
"""Telnet login for Huawei Devices"""
delay_factor = self.select_delay_factor(delay_factor)
password_change_prompt = r"(Change now|Please choose 'YES' or 'NO').+"
combined_pattern = r"({}|{}|{})".format(pri_prompt_terminator,
alt_prompt_terminator,
password_change_prompt)
output = ""
return_msg = ""
i = 1
while i <= max_loops:
try:
output = self.read_channel()
return_msg += output
# Search for username pattern / send username
if re.search(username_pattern, output, flags=re.I):
self.write_channel(self.username + self.TELNET_RETURN)
time.sleep(1 * delay_factor)
output = self.read_channel()
return_msg += output
# Search for password pattern / send password
if re.search(pwd_pattern, output, flags=re.I):
self.write_channel(self.password + self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
output = self.read_channel()
return_msg += output
if re.search(pri_prompt_terminator, output,
flags=re.M) or re.search(
alt_prompt_terminator, output,
flags=re.M):
return return_msg
# Search for password change prompt, send "N"
if re.search(password_change_prompt, output):
self.write_channel("N" + self.TELNET_RETURN)
output = self.read_until_pattern(pattern=combined_pattern)
return_msg += output
# Check if proper data received
if re.search(pri_prompt_terminator, output,
flags=re.M) or re.search(
alt_prompt_terminator, output, flags=re.M):
return return_msg
self.write_channel(self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
i += 1
except EOFError:
self.remote_conn.close()
msg = f"Login failed: {self.host}"
raise NetmikoAuthenticationException(msg)
# Last try to see if we already logged in
self.write_channel(self.TELNET_RETURN)
time.sleep(0.5 * delay_factor)
output = self.read_channel()
return_msg += output
if re.search(pri_prompt_terminator, output, flags=re.M) or re.search(
alt_prompt_terminator, output, flags=re.M):
return return_msg
self.remote_conn.close()
msg = f"Login failed: {self.host}"
raise NetmikoAuthenticationException(msg)
