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synchronize access to json key storage in account model

This commit is contained in:
Daniel Gultsch 2016-10-13 11:27:26 +02:00
parent 501152bcfd
commit f6cfa27741
3 changed files with 75 additions and 73 deletions
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40
src/main/java/eu/siacs/conversations/crypto/OtrService.java
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@ -53,28 +53,30 @@ public class OtrService extends OtrCryptoEngineImpl implements OtrEngineHost {
this.mXmppConnectionService = service;
}
private KeyPair loadKey(JSONObject keys) {
private KeyPair loadKey(final JSONObject keys) {
if (keys == null) {
return null;
}
try {
BigInteger x = new BigInteger(keys.getString("otr_x"), 16);
BigInteger y = new BigInteger(keys.getString("otr_y"), 16);
BigInteger p = new BigInteger(keys.getString("otr_p"), 16);
BigInteger q = new BigInteger(keys.getString("otr_q"), 16);
BigInteger g = new BigInteger(keys.getString("otr_g"), 16);
KeyFactory keyFactory = KeyFactory.getInstance("DSA");
DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, p, q, g);
DSAPrivateKeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
PublicKey publicKey = keyFactory.generatePublic(pubKeySpec);
PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);
return new KeyPair(publicKey, privateKey);
} catch (JSONException e) {
return null;
} catch (NoSuchAlgorithmException e) {
return null;
} catch (InvalidKeySpecException e) {
return null;
synchronized (keys) {
try {
BigInteger x = new BigInteger(keys.getString("otr_x"), 16);
BigInteger y = new BigInteger(keys.getString("otr_y"), 16);
BigInteger p = new BigInteger(keys.getString("otr_p"), 16);
BigInteger q = new BigInteger(keys.getString("otr_q"), 16);
BigInteger g = new BigInteger(keys.getString("otr_g"), 16);
KeyFactory keyFactory = KeyFactory.getInstance("DSA");
DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, p, q, g);
DSAPrivateKeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
PublicKey publicKey = keyFactory.generatePublic(pubKeySpec);
PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);
return new KeyPair(publicKey, privateKey);
} catch (JSONException e) {
return null;
} catch (NoSuchAlgorithmException e) {
return null;
} catch (InvalidKeySpecException e) {
return null;
}
}
}

89
src/main/java/eu/siacs/conversations/entities/Account.java
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@ -203,7 +203,7 @@ public class Account extends AbstractEntity {
protected int options = 0;
protected String rosterVersion;
protected State status = State.OFFLINE;
protected JSONObject keys = new JSONObject();
protected final JSONObject keys;
protected String avatar;
protected String displayName = null;
protected String hostname = null;
@ -238,11 +238,13 @@ public class Account extends AbstractEntity {
this.password = password;
this.options = options;
this.rosterVersion = rosterVersion;
JSONObject tmp;
try {
this.keys = new JSONObject(keys);
} catch (final JSONException ignored) {
this.keys = new JSONObject();
tmp = new JSONObject(keys);
} catch(JSONException e) {
tmp = new JSONObject();
}
this.keys = tmp;
this.avatar = avatar;
this.displayName = displayName;
this.hostname = hostname;
@ -391,15 +393,28 @@ public class Account extends AbstractEntity {
}
public String getKey(final String name) {
return this.keys.optString(name, null);
synchronized (this.keys) {
return this.keys.optString(name, null);
}
}
public int getKeyAsInt(final String name, int defaultValue) {
String key = getKey(name);
try {
return key == null ? defaultValue : Integer.parseInt(key);
} catch (NumberFormatException e) {
return defaultValue;
}
}
public boolean setKey(final String keyName, final String keyValue) {
try {
this.keys.put(keyName, keyValue);
return true;
} catch (final JSONException e) {
return false;
synchronized (this.keys) {
try {
this.keys.put(keyName, keyValue);
return true;
} catch (final JSONException e) {
return false;
}
}
}
@ -419,7 +434,9 @@ public class Account extends AbstractEntity {
values.put(SERVER, jid.getDomainpart());
values.put(PASSWORD, password);
values.put(OPTIONS, options);
values.put(KEYS, this.keys.toString());
synchronized (this.keys) {
values.put(KEYS, this.keys.toString());
}
values.put(ROSTERVERSION, rosterVersion);
values.put(AVATAR, avatar);
values.put(DISPLAY_NAME, displayName);
@ -496,54 +513,42 @@ public class Account extends AbstractEntity {
}
public String getPgpSignature() {
try {
if (keys.has(KEY_PGP_SIGNATURE) && !"null".equals(keys.getString(KEY_PGP_SIGNATURE))) {
return keys.getString(KEY_PGP_SIGNATURE);
} else {
return null;
}
} catch (final JSONException e) {
return null;
}
return getKey(KEY_PGP_SIGNATURE);
}
public boolean setPgpSignature(String signature) {
try {
keys.put(KEY_PGP_SIGNATURE, signature);
} catch (JSONException e) {
return false;
}
return true;
return setKey(KEY_PGP_SIGNATURE, signature);
}
public boolean unsetPgpSignature() {
try {
keys.put(KEY_PGP_SIGNATURE, JSONObject.NULL);
} catch (JSONException e) {
return false;
synchronized (this.keys) {
return keys.remove(KEY_PGP_SIGNATURE) != null;
}
return true;
}
public long getPgpId() {
if (keys.has(KEY_PGP_ID)) {
try {
return keys.getLong(KEY_PGP_ID);
} catch (JSONException e) {
synchronized (this.keys) {
if (keys.has(KEY_PGP_ID)) {
try {
return keys.getLong(KEY_PGP_ID);
} catch (JSONException e) {
return 0;
}
} else {
return 0;
}
} else {
return 0;
}
}
public boolean setPgpSignId(long pgpID) {
try {
keys.put(KEY_PGP_ID, pgpID);
} catch (JSONException e) {
return false;
synchronized (this.keys) {
try {
keys.put(KEY_PGP_ID, pgpID);
} catch (JSONException e) {
return false;
}
return true;
}
return true;
}
public Roster getRoster() {

19
src/main/java/eu/siacs/conversations/xmpp/XmppConnection.java
View File

@ -852,18 +852,13 @@ public class XmppConnection implements Runnable {
saslMechanism = new Anonymous(tagWriter, account, mXmppConnectionService.getRNG());
}
if (saslMechanism != null) {
final JSONObject keys = account.getKeys();
try {
if (keys.has(Account.PINNED_MECHANISM_KEY) &&
keys.getInt(Account.PINNED_MECHANISM_KEY) > saslMechanism.getPriority()) {
Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
" has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
") than pinned priority (" + keys.getInt(Account.PINNED_MECHANISM_KEY) +
"). Possible downgrade attack?");
throw new SecurityException();
}
} catch (final JSONException e) {
Log.d(Config.LOGTAG, "Parse error while checking pinned auth mechanism");
final int pinnedMechanism = account.getKeyAsInt(Account.PINNED_MECHANISM_KEY, -1);
if (pinnedMechanism > saslMechanism.getPriority()) {
Log.e(Config.LOGTAG, "Auth failed. Authentication mechanism " + saslMechanism.getMechanism() +
" has lower priority (" + String.valueOf(saslMechanism.getPriority()) +
") than pinned priority (" + pinnedMechanism +
"). Possible downgrade attack?");
throw new SecurityException();
}
Log.d(Config.LOGTAG, account.getJid().toString() + ": Authenticating with " + saslMechanism.getMechanism());
auth.setAttribute("mechanism", saslMechanism.getMechanism());