private void initialize(char[] knownHostsData) throws IOException {
BufferedReader br = new BufferedReader(new CharArrayReader(knownHostsData));
while (true) {
String line = br.readLine();
if (line == null) break;
line = line.trim();
if (line.startsWith("#")) continue;
String[] arr = line.split(" ");
if (arr.length >= 3) {
if ((arr[1].compareTo("ssh-rsa") == 0) || (arr[1].compareTo("ssh-dss") == 0)) {
String[] hostnames = arr[0].split(",");
byte[] msg = Base64.decode(arr[2].toCharArray());
addHostkey(hostnames, arr[1], msg);
}
}
}
}
/**
* Build list of known hosts for Trilead library.
*
* @return
*/
public KnownHosts getKnownHosts() {
KnownHosts known = new KnownHosts();
synchronized (dbLock) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor c =
db.query(
TABLE_HOSTS,
new String[] {
FIELD_HOST_HOSTNAME, FIELD_HOST_PORT, FIELD_HOST_HOSTKEYALGO, FIELD_HOST_HOSTKEY
},
null,
null,
null,
null,
null);
if (c != null) {
int COL_HOSTNAME = c.getColumnIndexOrThrow(FIELD_HOST_HOSTNAME),
COL_PORT = c.getColumnIndexOrThrow(FIELD_HOST_PORT),
COL_HOSTKEYALGO = c.getColumnIndexOrThrow(FIELD_HOST_HOSTKEYALGO),
COL_HOSTKEY = c.getColumnIndexOrThrow(FIELD_HOST_HOSTKEY);
while (c.moveToNext()) {
String hostname = c.getString(COL_HOSTNAME), hostkeyalgo = c.getString(COL_HOSTKEYALGO);
int port = c.getInt(COL_PORT);
byte[] hostkey = c.getBlob(COL_HOSTKEY);
if (hostkeyalgo == null || hostkeyalgo.length() == 0) continue;
if (hostkey == null || hostkey.length == 0) continue;
try {
known.addHostkey(
new String[] {String.format("%s:%d", hostname, port)}, hostkeyalgo, hostkey);
} catch (Exception e) {
Log.e(TAG, "Problem while adding a known host from database", e);
}
}
c.close();
}
}
return known;
}