Due to a scheduled upgrade to version 14.10, GitLab will be unavailabe on Monday 30.05., from 19:00 until 20:00.

SftpClient.kt 2.79 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 kotlin.system.exitProcess
Jonas Waeber's avatar
Jonas Waeber committed
26
import net.schmizz.sshj.SSHClient
Jonas Waeber's avatar
Jonas Waeber committed
27
28
29
30
31
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
32
33
34
import net.schmizz.sshj.userauth.UserAuthException
import org.apache.logging.log4j.LogManager

35
class SftpClient(sftpSettings: Map<String, String>) : Closeable {
Jonas Waeber's avatar
Jonas Waeber committed
36
37
38
39
40
    private val log = LogManager.getLogger("SftpClient")
    private val ssh = SSHClient()
    private val instance: SFTPClient
    init {
        try {
41
42
43
            ssh.loadKnownHosts()
            ssh.addHostKeyVerifier(sftpSettings["fingerprint"])
            ssh.connect(sftpSettings["host"])
Jonas Waeber's avatar
Jonas Waeber committed
44
45
46
            ssh.authPassword(sftpSettings["user"], sftpSettings["password"])
            instance = ssh.newSFTPClient()
        } catch (ex: UserAuthException) {
Jonas Waeber's avatar
Jonas Waeber committed
47
            log.error("SFTP User Authentication Error: Invalid user authentication supplied.")
Jonas Waeber's avatar
Jonas Waeber committed
48
            exitProcess(1)
49
50
51
52
53
54
        } 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
55
56
        } catch (ex: Exception) {
            ex.printStackTrace()
57
            log.error("SSH Exception: ${ex.localizedMessage}")
Jonas Waeber's avatar
Jonas Waeber committed
58
59
60
61
62
63
64
65
            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
66
67
    fun open(file: File): RemoteFile {
        return instance.open(file.path, setOf(OpenMode.READ))
Jonas Waeber's avatar
Jonas Waeber committed
68
69
70
71
72
73
74
75
76
77
    }

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

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

78
    override fun close() {
Jonas Waeber's avatar
Jonas Waeber committed
79
80
81
        instance.close()
        ssh.disconnect()
    }
Jonas Waeber's avatar
Jonas Waeber committed
82
}