SftpClient.kt 2.86 KB
Newer Older
Jonas Waeber's avatar
Jonas Waeber committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
/*
 * sftp-reader
 * Copyright (C) 2020 Memoriav
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package org.memobase

21
import java.io.Closeable
Jonas Waeber's avatar
Jonas Waeber committed
22
import java.io.File
23
24
import java.net.ConnectException
import java.net.UnknownHostException
Jonas Waeber's avatar
Jonas Waeber committed
25
import java.util.Properties
Jonas Waeber's avatar
Jonas Waeber committed
26
import kotlin.system.exitProcess
Jonas Waeber's avatar
Jonas Waeber committed
27
import net.schmizz.sshj.SSHClient
Jonas Waeber's avatar
Jonas Waeber committed
28
29
30
31
32
import net.schmizz.sshj.sftp.FileAttributes
import net.schmizz.sshj.sftp.FileMode
import net.schmizz.sshj.sftp.OpenMode
import net.schmizz.sshj.sftp.RemoteFile
import net.schmizz.sshj.sftp.SFTPClient
Jonas Waeber's avatar
Jonas Waeber committed
33
34
35
import net.schmizz.sshj.userauth.UserAuthException
import org.apache.logging.log4j.LogManager

Jonas Waeber's avatar
Jonas Waeber committed
36
class SftpClient(sftpSettings: Properties) : Closeable {
Jonas Waeber's avatar
Jonas Waeber committed
37
38
39
40
41
    private val log = LogManager.getLogger("SftpClient")
    private val ssh = SSHClient()
    private val instance: SFTPClient
    init {
        try {
42
            ssh.loadKnownHosts()
Jonas Waeber's avatar
Jonas Waeber committed
43
44
45
            ssh.addHostKeyVerifier(sftpSettings.getProperty("fingerprint"))
            ssh.connect(sftpSettings.getProperty("host"))
            ssh.authPassword(sftpSettings.getProperty("user"), sftpSettings.getProperty("password"))
Jonas Waeber's avatar
Jonas Waeber committed
46
47
            instance = ssh.newSFTPClient()
        } catch (ex: UserAuthException) {
Jonas Waeber's avatar
Jonas Waeber committed
48
            log.error("SFTP User Authentication Error: Invalid user authentication supplied.")
Jonas Waeber's avatar
Jonas Waeber committed
49
            exitProcess(1)
50
51
52
53
54
55
        } catch (ex: ConnectException) {
            log.error("SFTP Connection Exception: ${ex.message}.")
            exitProcess(1)
        } catch (ex: UnknownHostException) {
            log.error("SFTP Host Not Found: ${ex.message}.")
            exitProcess(1)
Jonas Waeber's avatar
Jonas Waeber committed
56
57
        } catch (ex: Exception) {
            ex.printStackTrace()
58
            log.error("SSH Exception: ${ex.localizedMessage}")
Jonas Waeber's avatar
Jonas Waeber committed
59
60
61
62
63
64
65
66
            exitProcess(1)
        }
    }

    fun listFiles(path: String): List<String> {
        return ls(path).filter { fileAttributes(it).mode.type == FileMode.Type.REGULAR }
    }

Jonas Waeber's avatar
Jonas Waeber committed
67
68
    fun open(file: File): RemoteFile {
        return instance.open(file.path, setOf(OpenMode.READ))
Jonas Waeber's avatar
Jonas Waeber committed
69
70
71
72
73
74
75
76
77
78
    }

    private fun fileAttributes(path: String): FileAttributes {
        return instance.lstat(path)
    }

    private fun ls(path: String): List<String> {
        return instance.ls(path).map { it.path }
    }

79
    override fun close() {
Jonas Waeber's avatar
Jonas Waeber committed
80
81
82
        instance.close()
        ssh.disconnect()
    }
Jonas Waeber's avatar
Jonas Waeber committed
83
}