1package eu.siacs.conversations.entities;
 2
 3import java.io.File;
 4
 5import eu.siacs.conversations.utils.MimeUtils;
 6
 7public class DownloadableFile extends File {
 8
 9	private static final long serialVersionUID = 2247012619505115863L;
10
11	private long expectedSize = 0;
12	private String sha1sum;
13	private byte[] aeskey;
14
15	private byte[] iv = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
16			0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0xf };
17
18	public DownloadableFile(String path) {
19		super(path);
20	}
21
22	public long getSize() {
23		return super.length();
24	}
25
26	public long getExpectedSize() {
27		return this.expectedSize;
28	}
29
30	public String getMimeType() {
31		String path = this.getAbsolutePath();
32		int start = path.lastIndexOf('.') + 1;
33		if (start < path.length()) {
34			String mime = MimeUtils.guessMimeTypeFromExtension(path.substring(start));
35			return mime == null ? "" : mime;
36		} else {
37			return "";
38		}
39	}
40
41	public void setExpectedSize(long size) {
42		this.expectedSize = size;
43	}
44
45	public String getSha1Sum() {
46		return this.sha1sum;
47	}
48
49	public void setSha1Sum(String sum) {
50		this.sha1sum = sum;
51	}
52
53	public void setKeyAndIv(byte[] keyIvCombo) {
54		if (keyIvCombo.length == 48) {
55			this.aeskey = new byte[32];
56			this.iv = new byte[16];
57			System.arraycopy(keyIvCombo, 0, this.iv, 0, 16);
58			System.arraycopy(keyIvCombo, 16, this.aeskey, 0, 32);
59		} else if (keyIvCombo.length >= 32) {
60			this.aeskey = new byte[32];
61			System.arraycopy(keyIvCombo, 0, aeskey, 0, 32);
62		} else if (keyIvCombo.length >= 16) {
63			this.aeskey = new byte[16];
64			System.arraycopy(keyIvCombo, 0, this.aeskey, 0, 16);
65		}
66	}
67
68	public void setKey(byte[] key) {
69		this.aeskey = key;
70	}
71
72	public void setIv(byte[] iv) {
73		this.iv = iv;
74	}
75
76	public byte[] getKey() {
77		return this.aeskey;
78	}
79
80	public byte[] getIv() {
81		return this.iv;
82	}
83}