def main():
options = docopt.docopt(usage, help=False)
options['--env'] = '' # exabgp compatibility
root = root_folder(options, [
'/bin/exabgpcli', '/sbin/exabgpcli', '/lib/exabgp/application/cli.py'
])
etc = root + '/etc/exabgp'
envfile = get_envfile(options, etc)
env = get_env(envfile)
pipename = env['api']['pipename']
if options['--help']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
if not options['<command>']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
command = ' '.join(options['<command>'])
pipes = named_pipe(root)
if len(pipes) != 1:
sys.stdout.write(
'could not find ExaBGP\'s named pipes (%s.in and %s.out) for the cli\n'
% (pipename, pipename))
sys.stdout.write(
'we scanned the following folders (the number is your PID):\n - ')
sys.stdout.write('\n - '.join(pipes))
sys.stdout.flush()
sys.exit(1)
send = pipes[0] + pipename + '.in'
recv = pipes[0] + pipename + '.out'
if not check_fifo(send):
sys.stdout.write(
'could not find write named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
if not check_fifo(recv):
sys.stdout.write('could not find read named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
def write_timeout(signum, frame):
sys.stderr.write('could not send command to ExaBGP')
sys.stderr.flush()
sys.exit(1)
signal.signal(signal.SIGALRM, write_timeout)
signal.alarm(2)
try:
writer = os.open(send, os.O_WRONLY | os.O_EXCL)
os.write(writer, command.encode('utf-8') + b'\n')
os.close(writer)
except OSError as exc:
if exc.errno == errno.ENXIO:
sys.stdout.write(
'ExaBGP is not running / using the configured named pipe')
sys.stdout.flush()
sys.exit(1)
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
except IOError as exc:
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
signal.alarm(0)
if command == 'reset':
sys.exit(0)
def read_timeout(signum, frame):
sys.stderr.write('could not read answer to ExaBGP')
sys.stderr.flush()
sys.exit(1)
signal.signal(signal.SIGALRM, read_timeout)
try:
signal.alarm(5)
reader = os.open(recv, os.O_RDONLY | os.O_EXCL)
signal.alarm(0)
buf = b''
done = False
while not done:
try:
raw = os.read(reader, 4096)
buf += raw
while b'\n' in buf:
line, buf = buf.split(b'\n', 1)
if line == b'done':
done = True
break
if line == b'shutdown':
sys.stderr.write(
'ExaBGP is shutting down, command aborted\n')
sys.stderr.flush()
done = True
break
if line == b'error':
done = True
sys.stderr.write('ExaBGP returns an error\n')
sys.stderr.flush()
break
sys.stdout.write('%s\n' % line.decode())
sys.stdout.flush()
select.select([reader], [], [], 0.01)
except OSError as exc:
if exc.errno in error.block:
break
except IOError as exc:
if exc.errno in error.block:
break
os.close(reader)
sys.exit(0)
except IOError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
except OSError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
def main ():
options = docopt.docopt(usage, help=False)
options['--env'] = '' # exabgp compatibility
root = root_folder(options,['/bin/exabgpcli','/sbin/exabgpcli','/lib/exabgp/application/cli.py'])
etc = root + '/etc/exabgp'
envfile = get_envfile(options,etc)
env = get_env(envfile)
pipename = env['api']['pipename']
if options['--help']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
if not options['<command>']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
command = ' '.join(options['<command>'])
pipes = named_pipe(root)
if len(pipes) != 1:
sys.stdout.write('Could not find ExaBGP\'s named pipes (%s.in and %s.out) for the cli in any of ' % (pipename,pipename) + ', '.join(pipes))
sys.stdout.flush()
sys.exit(1)
send = pipes[0] + pipename + '.in'
recv = pipes[0] + pipename + '.out'
if not check_fifo(send):
sys.stdout.write('could not find write named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
if not check_fifo(recv):
sys.stdout.write('could not find read named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
def write_timeout(signum, frame):
sys.stderr.write('could not send command to ExaBGP')
sys.stderr.flush()
sys.exit(1)
signal.signal(signal.SIGALRM, write_timeout)
signal.alarm(2)
try:
writer = os.open(send, os.O_WRONLY | os.O_EXCL)
os.write(writer,command + '\n')
os.close(writer)
except OSError as exc:
if exc.errno == errno.ENXIO:
sys.stdout.write('ExaBGP is not running / using the configured named pipe')
sys.stdout.flush()
sys.exit(1)
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
except IOError as exc:
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
signal.alarm(0)
if command == 'reset':
sys.exit(0)
def read_timeout(signum, frame):
sys.stderr.write('could not read answer to ExaBGP')
sys.stderr.flush()
sys.exit(1)
signal.signal(signal.SIGALRM, read_timeout)
try:
signal.alarm(5)
reader = os.open(recv, os.O_RDONLY | os.O_EXCL)
signal.alarm(0)
buf = ''
done = False
while not done:
try:
raw = os.read(reader,4096)
buf += raw
while '\n' in buf:
line,buf = buf.split('\n',1)
if line == 'done':
done = True
break
if line == 'shutdown':
sys.stderr.write('ExaBGP is shutting down, command aborted\n')
sys.stderr.flush()
done = True
break
if line == 'error':
done = True
sys.stderr.write('ExaBGP returns an error\n')
sys.stderr.flush()
break
sys.stdout.write('%s\n' % line)
sys.stdout.flush()
select.select([reader],[],[],0.01)
except OSError as exc:
if exc.errno in error.block:
break
except IOError as exc:
if exc.errno in error.block:
break
os.close(reader)
sys.exit(0)
except IOError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
except OSError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
def main():
options = docopt.docopt(usage, help=False)
options['--env'] = '' # exabgp compatibility
root = root_folder(options, [
'/bin/exabgpcli', '/sbin/exabgpcli', '/lib/exabgp/application/cli.py'
])
prefix = '' if root == '/usr' else root
etc = prefix + '/etc/exabgp'
envfile = get_envfile(options, etc)
env = get_env(envfile)
pipename = env['api']['pipename']
if options['--help']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
if not options['<command>']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
command = ' '.join(options['<command>'])
pipes = named_pipe(root)
if len(pipes) != 1:
sys.stdout.write(
'could not find ExaBGP\'s named pipes (%s.in and %s.out) for the cli\n'
% (pipename, pipename))
sys.stdout.write(
'we scanned the following folders (the number is your PID):\n - ')
sys.stdout.write('\n - '.join(pipes))
sys.stdout.flush()
sys.exit(1)
send = pipes[0] + pipename + '.in'
recv = pipes[0] + pipename + '.out'
if not check_fifo(send):
sys.stdout.write(
'could not find write named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
if not check_fifo(recv):
sys.stdout.write('could not find read named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
def write_timeout(signum, frame):
sys.stderr.write('could not send command to ExaBGP')
sys.stderr.flush()
sys.exit(1)
buffer = ''
start = time.time()
try:
reader = os.open(recv, os.O_RDONLY | os.O_EXCL | os.O_NONBLOCK)
while True:
while select.select([reader], [], [], 0) != ([], [], []):
buffer += os.read(reader, 4096)
buffer = buffer[-AnswerStream.buffer_size:]
# we read nothing, nothing to do
if not buffer:
break
# we read some data but it is not ending by a new line (ie: not a command completion)
if buffer[-1] != '\n':
continue
if AnswerStream.done.endswith(buffer[-len(AnswerStream.done):]):
break
if AnswerStream.error.endswith(buffer[-len(AnswerStream.error):]):
break
if AnswerStream.shutdown.endswith(
buffer[-len(AnswerStream.shutdown):]):
break
# we are not ack'ing the command and probably have read all there is
if time.time() > start + 1.5:
break
except Exception as exc:
sys.stdout.write(
'could not clear named pipe from potential previous command data')
sys.stdout.write(exc)
sys.stdout.flush()
signal.signal(signal.SIGALRM, write_timeout)
signal.alarm(2)
try:
writer = os.open(send, os.O_WRONLY | os.O_EXCL)
os.write(writer, command.encode('utf-8') + b'\n')
os.close(writer)
except OSError as exc:
if exc.errno == errno.ENXIO:
sys.stdout.write(
'ExaBGP is not running / using the configured named pipe')
sys.stdout.flush()
sys.exit(1)
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
except IOError as exc:
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
signal.alarm(0)
if command == 'reset':
sys.exit(0)
def read_timeout(signum, frame):
sys.stderr.write('could not read answer to ExaBGP')
sys.stderr.flush()
sys.exit(1)
signal.signal(signal.SIGALRM, read_timeout)
try:
signal.alarm(5)
reader = os.open(recv, os.O_RDONLY | os.O_EXCL)
signal.alarm(0)
buf = b''
done = False
while not done:
try:
raw = os.read(reader, 4096)
buf += raw
while b'\n' in buf:
line, buf = buf.split(b'\n', 1)
string = line.decode()
if string == Answer.done:
done = True
break
if string == Answer.shutdown:
sys.stderr.write(
'ExaBGP is shutting down, command aborted\n')
sys.stderr.flush()
done = True
break
if string == Answer.error:
done = True
sys.stderr.write(
'ExaBGP returns an error (see ExaBGP\'s logs for more information)\n'
)
sys.stderr.write(
'use help for a list of available commands\n')
sys.stderr.flush()
break
sys.stdout.write('%s\n' % string)
sys.stdout.flush()
select.select([reader], [], [], 0.01)
except OSError as exc:
if exc.errno in error.block:
break
except IOError as exc:
if exc.errno in error.block:
break
os.close(reader)
sys.exit(0)
except IOError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
except OSError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
def main ():
options = docopt.docopt(usage, help=False)
if options['--env'] is None:
options['--env'] = ''
root = root_folder(options,['/bin/exabgpcli','/sbin/exabgpcli','/lib/exabgp/application/cli.py'])
prefix = '' if root == '/usr' else root
etc = prefix + '/etc/exabgp'
envfile = get_envfile(options,etc)
env = get_env(envfile)
pipename = env['api']['pipename']
if options['--help']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
if not options['<command>']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
command = ' '.join(options['<command>'])
pipes = named_pipe(root, pipename)
if len(pipes) != 1:
sys.stdout.write('could not find ExaBGP\'s named pipes (%s.in and %s.out) for the cli\n' % (pipename, pipename))
sys.stdout.write('we scanned the following folders (the number is your PID):\n - ')
sys.stdout.write('\n - '.join(pipes))
sys.stdout.flush()
sys.exit(1)
send = pipes[0] + pipename + '.in'
recv = pipes[0] + pipename + '.out'
if not check_fifo(send):
sys.stdout.write('could not find write named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
if not check_fifo(recv):
sys.stdout.write('could not find read named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
reader = open_reader(recv)
rbuffer = b''
start = time.time()
while True:
try:
while select.select([reader], [], [], 0) != ([], [], []):
rbuffer += os.read(reader,4096)
rbuffer = rbuffer[-AnswerStream.buffer_size:]
except IOError as exc:
if exc.errno in error.block:
continue
sys.stdout.write('could not clear named pipe from potential previous command data (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
except OSError as exc:
if exc.errno in error.block:
continue
sys.stdout.write('could not clear named pipe from potential previous command data (%s)' % str(exc))
sys.stdout.write(exc)
sys.stdout.flush()
sys.exit(1)
# we are not ack'ing the command and probably have read all there is
if time.time() > start + 1.5:
break
# we read nothing, nothing to do
if not rbuffer:
break
# we read some data but it is not ending by a new line (ie: not a command completion)
if rbuffer[-1] != 10: # \n
continue
if AnswerStream.done.endswith(rbuffer[-len(AnswerStream.done):]):
break
if AnswerStream.error.endswith(rbuffer[-len(AnswerStream.error):]):
break
if AnswerStream.shutdown.endswith(rbuffer[-len(AnswerStream.shutdown):]):
break
renamed = ['']
for pos, token in enumerate(command.split()):
for nickname, name, match in (
('a', 'announce', lambda pos, pre: pos == 0 or pre.count('.') == 3 or pre.count(':') != 0),
('a', 'attributes', lambda pos, pre: pre[-1] == 'announce' or pre[-1] == 'withdraw'),
('c', 'configuration', lambda pos, pre: True),
('e', 'eor', lambda pos, pre: pre[-1] == 'announce'),
('e', 'extensive', lambda _, pre: 'show' in pre),
('f', 'flow', lambda pos, pre: pre[-1] == 'announce' or pre[-1] == 'withdraw'),
('f', 'flush', lambda pos, pre: pos == 0 or pre.count('.') == 3 or pre.count(':') != 0),
('h', 'help', lambda pos, pre: pos == 0),
('i', 'in', lambda pos, pre: pre[-1] == 'adj-rib'),
('n', 'neighbor', lambda pos, pre: pos == 0 or pre[-1] == 'show'),
('r', 'route', lambda pos, pre: pre == 'announce' or pre == 'withdraw'),
('rr', 'route-refresh', lambda _, pre: pre == 'announce'),
('s', 'show', lambda pos, pre: pos == 0),
('t', 'teardown', lambda pos, pre: pos == 0 or pre.count('.') == 3 or pre.count(':') != 0),
('s', 'summary', lambda pos, pre: pos != 0),
('v', 'vps', lambda pos, pre: pre[-1] == 'announce' or pre[-1] == 'withdraw'),
('o', 'operation', lambda pos, pre: pre[-1] == 'announce'),
('o', 'out', lambda pos, pre: pre[-1] == 'adj-rib'),
('a', 'adj-rib', lambda pos, pre: pre[-1] in ['clear','flush','show']),
('w', 'withdraw', lambda pos, pre: pos == 0 or pre.count('.') == 3 or pre.count(':') != 0),
('w', 'watchdog', lambda pos, pre: pre[-1] == 'announce' or pre[-1] == 'withdraw'),
('neighbour', 'neighbor', lambda pos, pre: True),
('neigbour', 'neighbor', lambda pos, pre: True),
('neigbor', 'neighbor', lambda pos, pre: True),
):
if (token == nickname or name.startswith(token)) and match(pos,renamed):
renamed.append(name)
break
else:
renamed.append(token)
sending = ' '.join(renamed).strip()
# This does not change the behaviour for well formed command
if sending != command:
print('command: %s' % sending)
writer = open_writer(send)
try:
os.write(writer, sending.encode('utf-8') + b'\n')
os.close(writer)
except IOError as exc:
sys.stdout.write('could not send command to ExaBGP (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
except OSError as exc:
sys.stdout.write('could not send command to ExaBGP (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
if command == 'reset':
sys.exit(0)
waited = 0.0
buf = b''
done = False
done_time_diff = 0.5
while not done:
try:
r, _, _ = select.select([reader], [], [], 0.01)
except OSError as exc:
if exc.errno in error.block:
continue
sys.stdout.write('could not get answer from ExaBGP (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
except IOError as exc:
if exc.errno in error.block:
continue
sys.stdout.write('could not get answer from ExaBGP (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
if waited > 5.0:
sys.stderr.write('\n')
sys.stderr.write('warning: no end of command message received\n')
sys.stderr.write('warning: normal if exabgp.api.ack is set to false otherwise some data may get stuck on the pipe\n')
sys.stderr.write('warning: otherwise it may cause exabgp reactor to block\n')
sys.exit(0)
elif not r:
waited += 0.01
continue
else:
waited = 0.0
try:
raw = os.read(reader, 4096)
except OSError as exc:
if exc.errno in error.block:
continue
sys.stdout.write('could not read answer from ExaBGP (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
except IOError as exc:
if exc.errno in error.block:
continue
sys.stdout.write('could not read answer from ExaBGP (%s)' % str(exc))
sys.stdout.flush()
sys.exit(1)
buf += raw
while b'\n' in buf:
line,buf = buf.split(b'\n',1)
string = line.decode()
if string == Answer.done:
done = True
break
if string == Answer.shutdown:
sys.stderr.write('ExaBGP is shutting down, command aborted\n')
sys.stderr.flush()
done = True
break
if string == Answer.error:
done = True
sys.stderr.write('ExaBGP returns an error (see ExaBGP\'s logs for more information)\n')
sys.stderr.write('use help for a list of available commands\n')
sys.stderr.flush()
break
sys.stdout.write('%s\n' % string)
sys.stdout.flush()
if not env.get('api').get('ack') and not raw.decode():
this_moment = time.time()
recv_epoch_time = os.path.getmtime(recv)
time_diff = this_moment - recv_epoch_time
if time_diff >= done_time_diff:
done = True
try:
os.close(reader)
except Exception:
pass
sys.exit(0)
def main ():
options = docopt.docopt(usage, help=False)
options['--env'] = '' # exabgp compatibility
root = root_folder(options,['/bin/exabgpcli','/sbin/exabgpcli','/lib/exabgp/application/cli.py'])
prefix = '' if root == '/usr' else root
etc = prefix + '/etc/exabgp'
envfile = get_envfile(options,etc)
env = get_env(envfile)
pipename = env['api']['pipename']
if options['--help']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
if not options['<command>']:
sys.stdout.write(usage)
sys.stdout.flush()
sys.exit(0)
command = ' '.join(options['<command>'])
pipes = named_pipe(root)
if len(pipes) != 1:
sys.stdout.write('could not find ExaBGP\'s named pipes (%s.in and %s.out) for the cli\n' % (pipename, pipename))
sys.stdout.write('we scanned the following folders (the number is your PID):\n - ')
sys.stdout.write('\n - '.join(pipes))
sys.stdout.flush()
sys.exit(1)
send = pipes[0] + pipename + '.in'
recv = pipes[0] + pipename + '.out'
if not check_fifo(send):
sys.stdout.write('could not find write named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
if not check_fifo(recv):
sys.stdout.write('could not find read named pipe to connect to ExaBGP')
sys.stdout.flush()
sys.exit(1)
def write_timeout(signum, frame):
sys.stderr.write('could not send command to ExaBGP')
sys.stderr.flush()
sys.exit(1)
buffer = ''
start = time.time()
try:
reader = os.open(recv, os.O_RDONLY | os.O_EXCL | os.O_NONBLOCK)
while True:
while select.select([reader], [], [], 0) != ([], [], []):
buffer += os.read(reader,4096)
buffer = buffer[-AnswerStream.buffer_size:]
# we read nothing, nothing to do
if not buffer:
break
# we read some data but it is not ending by a new line (ie: not a command completion)
if buffer[-1] != '\n':
continue
if AnswerStream.done.endswith(buffer[-len(AnswerStream.done):]):
break
if AnswerStream.error.endswith(buffer[-len(AnswerStream.error):]):
break
if AnswerStream.shutdown.endswith(buffer[-len(AnswerStream.shutdown):]):
break
# we are not ack'ing the command and probably have read all there is
if time.time() > start + 1.5:
break
except Exception as exc:
sys.stdout.write('could not clear named pipe from potential previous command data')
sys.stdout.write(exc)
sys.stdout.flush()
signal.signal(signal.SIGALRM, write_timeout)
signal.alarm(2)
try:
writer = os.open(send, os.O_WRONLY | os.O_EXCL)
os.write(writer,command.encode('utf-8') + b'\n')
os.close(writer)
except OSError as exc:
if exc.errno == errno.ENXIO:
sys.stdout.write('ExaBGP is not running / using the configured named pipe')
sys.stdout.flush()
sys.exit(1)
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
except IOError as exc:
sys.stdout.write('could not communicate with ExaBGP')
sys.stdout.flush()
sys.exit(1)
signal.alarm(0)
if command == 'reset':
sys.exit(0)
def read_timeout(signum, frame):
sys.stderr.write('could not read answer to ExaBGP')
sys.stderr.flush()
sys.exit(1)
signal.signal(signal.SIGALRM, read_timeout)
try:
signal.alarm(5)
reader = os.open(recv, os.O_RDONLY | os.O_EXCL)
signal.alarm(0)
buf = b''
done = False
while not done:
try:
raw = os.read(reader,4096)
buf += raw
while b'\n' in buf:
line,buf = buf.split(b'\n',1)
string = line.decode()
if string == Answer.done:
done = True
break
if string == Answer.shutdown:
sys.stderr.write('ExaBGP is shutting down, command aborted\n')
sys.stderr.flush()
done = True
break
if string == Answer.error:
done = True
sys.stderr.write('ExaBGP returns an error (see ExaBGP\'s logs for more information)\n')
sys.stderr.write('use help for a list of available commands\n')
sys.stderr.flush()
break
sys.stdout.write('%s\n' % string)
sys.stdout.flush()
select.select([reader],[],[],0.01)
except OSError as exc:
if exc.errno in error.block:
break
except IOError as exc:
if exc.errno in error.block:
break
os.close(reader)
sys.exit(0)
except IOError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
except OSError:
sys.stdout.write('could not read answer from ExaBGP')
sys.stdout.flush()
