97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
import paramiko
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from paramiko.ssh_exception import SSHException, NoValidConnectionsError
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import time
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import hashlib
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import sys
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import os
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class sftp_remote:
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def __init__(self, config, settings):
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self.config = config
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self.path = config['path']
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self.description = config['description']
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self.hostname = config['hostname']
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self.username = config['username']
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self.port = config['port']
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self.remote_type = config['remote_type']
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self.remote_attempts = settings[self.remote_type]['remote_attempts']
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self.remote_delay = settings[self.remote_type]['remote_delay']
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self.remote_error = None
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self.password = settings[self.remote_type][self.hostname][self.username]['password']
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self.ssh = None
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def connect(self):
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self.transport = paramiko.Transport((self.hostname, int(self.port)))
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self.transport.connect(username = self.username, password = self.password)
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self.sftp = paramiko.SFTPClient.from_transport(self.transport)
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def disconnect(self):
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del (self.sftp)
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self.transport.close()
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def __close__(self):
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del (self.sftp)
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self.transport.close()
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def ssh_connect(self):
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self.ssh = paramiko.SSHClient()
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#i trust my vm's
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self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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self.ssh.connect(self.hostname, username=self.username, password=self.password)
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def ssh_disconnect(self):
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self.ssh.close()
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def subtract_remote_attempts(self, total_attempts):
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time.sleep(self.remote_delay)
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return total_attempts -1
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def digest(self, file_path):
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hashvalue = hashlib.sha256()
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with open(file_path, 'rb') as file_:
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while True:
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chunk = file_.read(hashvalue.block_size)
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if not chunk:
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break
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hashvalue.update(chunk)
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return hashvalue.hexdigest()
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def put(self, local_path, remote_path, files_bytes = None):
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sha256 = self.digest(local_path) #sha value at source
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total_attempts = int(self.remote_attempts)
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local_path_str = str(local_path)
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local_path_get = ''.join([local_path_str[:local_path_str.rindex('/')]])
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try:
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self.connect()
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#print('remote_path chdir: ', remote_path)
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self.sftp.chdir(remote_path) # Test if remote_path exists
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except IOError:
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self.sftp.mkdir(remote_path)
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finally:
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self.disconnect()
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if not os.path.isdir(local_path_get):
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original_umask = os.umask(0) #create local temp folder for redownloaded files
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os.makedirs(local_path_get, 755)
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os.umask(original_umask)
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filename = local_path_str.split("/")[-1]
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remote_path = remote_path + filename
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local_path_get = local_path_get + filename
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while total_attempts > 0:
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self.connect()
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self.sftp.put(local_path, remote_path)
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self.disconnect()
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self.connect()
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self.sftp.get(remote_path, local_path_get)
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self.disconnect()
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local_sha256 = self.digest(local_path_get)
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os.remove(local_path_get)
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if local_sha256 == sha256:
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#print('sha confirmed')
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return True
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total_attempts = self.subtract_remote_attempts(total_attempts)
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if total_attempts == 0:
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return False
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