diff options
Diffstat (limited to 'conversations/src/main/java/eu/siacs/conversations/utils')
12 files changed, 1289 insertions, 0 deletions
diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java b/conversations/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java new file mode 100644 index 00000000..47595c6e --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/CryptoHelper.java @@ -0,0 +1,112 @@ +package eu.siacs.conversations.utils; + +import java.math.BigInteger; +import java.nio.charset.Charset; +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.security.SecureRandom; + +import eu.siacs.conversations.entities.Account; +import android.util.Base64; + +public class CryptoHelper { + public static final String FILETRANSFER = "?FILETRANSFERv1:"; + final protected static char[] hexArray = "0123456789abcdef".toCharArray(); + final protected static char[] vowels = "aeiou".toCharArray(); + final protected static char[] consonants = "bcdfghjklmnpqrstvwxyz" + .toCharArray(); + + public static String bytesToHex(byte[] bytes) { + char[] hexChars = new char[bytes.length * 2]; + for (int j = 0; j < bytes.length; j++) { + int v = bytes[j] & 0xFF; + hexChars[j * 2] = hexArray[v >>> 4]; + hexChars[j * 2 + 1] = hexArray[v & 0x0F]; + } + return new String(hexChars); + } + + public static byte[] hexToBytes(String hexString) { + int len = hexString.length(); + byte[] array = new byte[len / 2]; + for (int i = 0; i < len; i += 2) { + array[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4) + Character + .digit(hexString.charAt(i + 1), 16)); + } + return array; + } + + public static String saslPlain(String username, String password) { + String sasl = '\u0000' + username + '\u0000' + password; + return Base64.encodeToString(sasl.getBytes(Charset.defaultCharset()), + Base64.NO_WRAP); + } + + private static byte[] concatenateByteArrays(byte[] a, byte[] b) { + byte[] result = new byte[a.length + b.length]; + System.arraycopy(a, 0, result, 0, a.length); + System.arraycopy(b, 0, result, a.length, b.length); + return result; + } + + public static String saslDigestMd5(Account account, String challenge, + SecureRandom random) { + try { + String[] challengeParts = new String(Base64.decode(challenge, + Base64.DEFAULT)).split(","); + String nonce = ""; + for (int i = 0; i < challengeParts.length; ++i) { + String[] parts = challengeParts[i].split("="); + if (parts[0].equals("nonce")) { + nonce = parts[1].replace("\"", ""); + } else if (parts[0].equals("rspauth")) { + return null; + } + } + String digestUri = "xmpp/" + account.getServer(); + String nonceCount = "00000001"; + String x = account.getUsername() + ":" + account.getServer() + ":" + + account.getPassword(); + MessageDigest md = MessageDigest.getInstance("MD5"); + byte[] y = md.digest(x.getBytes(Charset.defaultCharset())); + String cNonce = new BigInteger(100, random).toString(32); + byte[] a1 = concatenateByteArrays(y, + (":" + nonce + ":" + cNonce).getBytes(Charset + .defaultCharset())); + String a2 = "AUTHENTICATE:" + digestUri; + String ha1 = bytesToHex(md.digest(a1)); + String ha2 = bytesToHex(md.digest(a2.getBytes(Charset + .defaultCharset()))); + String kd = ha1 + ":" + nonce + ":" + nonceCount + ":" + cNonce + + ":auth:" + ha2; + String response = bytesToHex(md.digest(kd.getBytes(Charset + .defaultCharset()))); + String saslString = "username=\"" + account.getUsername() + + "\",realm=\"" + account.getServer() + "\",nonce=\"" + + nonce + "\",cnonce=\"" + cNonce + "\",nc=" + nonceCount + + ",qop=auth,digest-uri=\"" + digestUri + "\",response=" + + response + ",charset=utf-8"; + return Base64.encodeToString( + saslString.getBytes(Charset.defaultCharset()), + Base64.NO_WRAP); + } catch (NoSuchAlgorithmException e) { + return null; + } + } + + public static String randomMucName(SecureRandom random) { + return randomWord(3, random) + "." + randomWord(7, random); + } + + protected static String randomWord(int lenght, SecureRandom random) { + StringBuilder builder = new StringBuilder(lenght); + for (int i = 0; i < lenght; ++i) { + if (i % 2 == 0) { + builder.append(consonants[random.nextInt(consonants.length)]); + } else { + builder.append(vowels[random.nextInt(vowels.length)]); + } + } + return builder.toString(); + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/DNSHelper.java b/conversations/src/main/java/eu/siacs/conversations/utils/DNSHelper.java new file mode 100644 index 00000000..c51a75ac --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/DNSHelper.java @@ -0,0 +1,185 @@ +package eu.siacs.conversations.utils; + +import de.measite.minidns.Client; +import de.measite.minidns.DNSMessage; +import de.measite.minidns.Record; +import de.measite.minidns.Record.TYPE; +import de.measite.minidns.Record.CLASS; +import de.measite.minidns.record.SRV; +import de.measite.minidns.record.A; +import de.measite.minidns.record.AAAA; +import de.measite.minidns.record.Data; +import de.measite.minidns.util.NameUtil; +import eu.siacs.conversations.Config; + +import java.io.IOException; +import java.net.InetAddress; +import java.net.SocketTimeoutException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.Random; +import java.util.TreeMap; + +import android.os.Bundle; +import android.util.Log; + +public class DNSHelper { + protected static Client client = new Client(); + + public static Bundle getSRVRecord(String host) throws IOException { + String dns[] = client.findDNS(); + + if (dns != null) { + for (String dnsserver : dns) { + InetAddress ip = InetAddress.getByName(dnsserver); + Bundle b = queryDNS(host, ip); + if (b.containsKey("name")) { + return b; + } else if (b.containsKey("error") + && "nosrv".equals(b.getString("error", null))) { + return b; + } + } + } + return queryDNS(host, InetAddress.getByName("8.8.8.8")); + } + + public static Bundle queryDNS(String host, InetAddress dnsServer) { + Bundle namePort = new Bundle(); + try { + String qname = "_xmpp-client._tcp." + host; + Log.d(Config.LOGTAG, + "using dns server: " + dnsServer.getHostAddress() + + " to look up " + host); + DNSMessage message = client.query(qname, TYPE.SRV, CLASS.IN, + dnsServer.getHostAddress()); + + // How should we handle priorities and weight? + // Wikipedia has a nice article about priorities vs. weights: + // https://en.wikipedia.org/wiki/SRV_record#Provisioning_for_high_service_availability + + // we bucket the SRV records based on priority, pick per priority + // a random order respecting the weight, and dump that priority by + // priority + + TreeMap<Integer, ArrayList<SRV>> priorities = new TreeMap<Integer, ArrayList<SRV>>(); + TreeMap<String, ArrayList<String>> ips4 = new TreeMap<String, ArrayList<String>>(); + TreeMap<String, ArrayList<String>> ips6 = new TreeMap<String, ArrayList<String>>(); + + for (Record[] rrset : new Record[][] { message.getAnswers(), + message.getAdditionalResourceRecords() }) { + for (Record rr : rrset) { + Data d = rr.getPayload(); + if (d instanceof SRV + && NameUtil.idnEquals(qname, rr.getName())) { + SRV srv = (SRV) d; + if (!priorities.containsKey(srv.getPriority())) { + priorities.put(srv.getPriority(), + new ArrayList<SRV>(2)); + } + priorities.get(srv.getPriority()).add(srv); + } + if (d instanceof A) { + A arecord = (A) d; + if (!ips4.containsKey(rr.getName())) { + ips4.put(rr.getName(), new ArrayList<String>(3)); + } + ips4.get(rr.getName()).add(arecord.toString()); + } + if (d instanceof AAAA) { + AAAA aaaa = (AAAA) d; + if (!ips6.containsKey(rr.getName())) { + ips6.put(rr.getName(), new ArrayList<String>(3)); + } + ips6.get(rr.getName()).add("[" + aaaa.toString() + "]"); + } + } + } + + Random rnd = new Random(); + ArrayList<SRV> result = new ArrayList<SRV>( + priorities.size() * 2 + 1); + for (ArrayList<SRV> s : priorities.values()) { + + // trivial case + if (s.size() <= 1) { + result.addAll(s); + continue; + } + + long totalweight = 0l; + for (SRV srv : s) { + totalweight += srv.getWeight(); + } + + while (totalweight > 0l && s.size() > 0) { + long p = (rnd.nextLong() & 0x7fffffffffffffffl) + % totalweight; + int i = 0; + while (p > 0) { + p -= s.get(i++).getPriority(); + } + i--; + // remove is expensive, but we have only a few entries + // anyway + SRV srv = s.remove(i); + totalweight -= srv.getWeight(); + result.add(srv); + } + + Collections.shuffle(s, rnd); + result.addAll(s); + + } + + if (result.size() == 0) { + namePort.putString("error", "nosrv"); + return namePort; + } + // we now have a list of servers to try :-) + + // classic name/port pair + String resultName = result.get(0).getName(); + namePort.putString("name", resultName); + namePort.putInt("port", result.get(0).getPort()); + + if (ips4.containsKey(resultName)) { + // we have an ip! + ArrayList<String> ip = ips4.get(resultName); + Collections.shuffle(ip, rnd); + namePort.putString("ipv4", ip.get(0)); + } + if (ips6.containsKey(resultName)) { + ArrayList<String> ip = ips6.get(resultName); + Collections.shuffle(ip, rnd); + namePort.putString("ipv6", ip.get(0)); + } + + // add all other records + int i = 0; + for (SRV srv : result) { + namePort.putString("name" + i, srv.getName()); + namePort.putInt("port" + i, srv.getPort()); + i++; + } + + } catch (SocketTimeoutException e) { + namePort.putString("error", "timeout"); + } catch (Exception e) { + namePort.putString("error", "unhandled"); + } + return namePort; + } + + final protected static char[] hexArray = "0123456789ABCDEF".toCharArray(); + + public static String bytesToHex(byte[] bytes) { + char[] hexChars = new char[bytes.length * 2]; + for (int j = 0; j < bytes.length; j++) { + int v = bytes[j] & 0xFF; + hexChars[j * 2] = hexArray[v >>> 4]; + hexChars[j * 2 + 1] = hexArray[v & 0x0F]; + } + return new String(hexChars); + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/ExceptionHandler.java b/conversations/src/main/java/eu/siacs/conversations/utils/ExceptionHandler.java new file mode 100644 index 00000000..88fa18ff --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/ExceptionHandler.java @@ -0,0 +1,44 @@ +package eu.siacs.conversations.utils; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.OutputStream; +import java.io.PrintWriter; +import java.io.StringWriter; +import java.io.Writer; +import java.lang.Thread.UncaughtExceptionHandler; + +import android.content.Context; + +public class ExceptionHandler implements UncaughtExceptionHandler { + + private UncaughtExceptionHandler defaultHandler; + private Context context; + + public ExceptionHandler(Context context) { + this.context = context; + this.defaultHandler = Thread.getDefaultUncaughtExceptionHandler(); + } + + @Override + public void uncaughtException(Thread thread, Throwable ex) { + Writer result = new StringWriter(); + PrintWriter printWriter = new PrintWriter(result); + ex.printStackTrace(printWriter); + String stacktrace = result.toString(); + printWriter.close(); + try { + OutputStream os = context.openFileOutput("stacktrace.txt", + Context.MODE_PRIVATE); + os.write(stacktrace.getBytes()); + } catch (FileNotFoundException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } catch (IOException e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + this.defaultHandler.uncaughtException(thread, ex); + } + +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/ExceptionHelper.java b/conversations/src/main/java/eu/siacs/conversations/utils/ExceptionHelper.java new file mode 100644 index 00000000..b5fc88bd --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/ExceptionHelper.java @@ -0,0 +1,117 @@ +package eu.siacs.conversations.utils; + +import java.io.BufferedReader; +import java.io.FileInputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStreamReader; +import java.util.List; + +import eu.siacs.conversations.Config; +import eu.siacs.conversations.R; +import eu.siacs.conversations.entities.Account; +import eu.siacs.conversations.entities.Conversation; +import eu.siacs.conversations.entities.Message; +import eu.siacs.conversations.services.XmppConnectionService; +import android.app.AlertDialog; +import android.content.Context; +import android.content.DialogInterface; +import android.content.SharedPreferences; +import android.content.DialogInterface.OnClickListener; +import android.content.pm.PackageInfo; +import android.content.pm.PackageManager; +import android.content.pm.PackageManager.NameNotFoundException; +import android.preference.PreferenceManager; +import android.text.format.DateUtils; +import android.util.Log; + +public class ExceptionHelper { + public static void init(Context context) { + if (!(Thread.getDefaultUncaughtExceptionHandler() instanceof ExceptionHandler)) { + Thread.setDefaultUncaughtExceptionHandler(new ExceptionHandler( + context)); + } + } + + public static void checkForCrash(Context context, + final XmppConnectionService service) { + try { + final SharedPreferences preferences = PreferenceManager + .getDefaultSharedPreferences(context); + boolean neverSend = preferences.getBoolean("never_send", false); + if (neverSend) { + return; + } + List<Account> accounts = service.getAccounts(); + Account account = null; + for (int i = 0; i < accounts.size(); ++i) { + if (!accounts.get(i).isOptionSet(Account.OPTION_DISABLED)) { + account = accounts.get(i); + break; + } + } + if (account == null) { + return; + } + final Account finalAccount = account; + FileInputStream file = context.openFileInput("stacktrace.txt"); + InputStreamReader inputStreamReader = new InputStreamReader(file); + BufferedReader stacktrace = new BufferedReader(inputStreamReader); + final StringBuilder report = new StringBuilder(); + PackageManager pm = context.getPackageManager(); + PackageInfo packageInfo = null; + try { + packageInfo = pm.getPackageInfo(context.getPackageName(), 0); + report.append("Version: " + packageInfo.versionName + '\n'); + report.append("Last Update: " + + DateUtils.formatDateTime(context, + packageInfo.lastUpdateTime, + DateUtils.FORMAT_SHOW_TIME + | DateUtils.FORMAT_SHOW_DATE) + '\n'); + } catch (NameNotFoundException e) { + } + String line; + while ((line = stacktrace.readLine()) != null) { + report.append(line); + report.append('\n'); + } + file.close(); + context.deleteFile("stacktrace.txt"); + AlertDialog.Builder builder = new AlertDialog.Builder(context); + builder.setTitle(context.getString(R.string.crash_report_title)); + builder.setMessage(context.getText(R.string.crash_report_message)); + builder.setPositiveButton(context.getText(R.string.send_now), + new OnClickListener() { + + @Override + public void onClick(DialogInterface dialog, int which) { + + Log.d(Config.LOGTAG, "using account=" + + finalAccount.getJid() + + " to send in stack trace"); + Conversation conversation = service + .findOrCreateConversation(finalAccount, + "bugs@siacs.eu", false); + Message message = new Message(conversation, report + .toString(), Message.ENCRYPTION_NONE); + service.sendMessage(message); + } + }); + builder.setNegativeButton(context.getText(R.string.send_never), + new OnClickListener() { + + @Override + public void onClick(DialogInterface dialog, int which) { + preferences.edit().putBoolean("never_send", true) + .commit(); + } + }); + builder.create().show(); + } catch (FileNotFoundException e) { + return; + } catch (IOException e) { + return; + } + + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/OnPhoneContactsLoadedListener.java b/conversations/src/main/java/eu/siacs/conversations/utils/OnPhoneContactsLoadedListener.java new file mode 100644 index 00000000..9a689768 --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/OnPhoneContactsLoadedListener.java @@ -0,0 +1,9 @@ +package eu.siacs.conversations.utils; + +import java.util.List; + +import android.os.Bundle; + +public interface OnPhoneContactsLoadedListener { + public void onPhoneContactsLoaded(List<Bundle> phoneContacts); +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/PRNGFixes.java b/conversations/src/main/java/eu/siacs/conversations/utils/PRNGFixes.java new file mode 100644 index 00000000..8fe67234 --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/PRNGFixes.java @@ -0,0 +1,327 @@ +package eu.siacs.conversations.utils; + +import android.os.Build; +import android.os.Process; +import android.util.Log; + +import java.io.ByteArrayOutputStream; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.OutputStream; +import java.io.UnsupportedEncodingException; +import java.security.NoSuchAlgorithmException; +import java.security.Provider; +import java.security.SecureRandom; +import java.security.SecureRandomSpi; +import java.security.Security; + +/** + * Fixes for the output of the default PRNG having low entropy. + * + * The fixes need to be applied via {@link #apply()} before any use of Java + * Cryptography Architecture primitives. A good place to invoke them is in the + * application's {@code onCreate}. + */ +public final class PRNGFixes { + + private static final int VERSION_CODE_JELLY_BEAN = 16; + private static final int VERSION_CODE_JELLY_BEAN_MR2 = 18; + private static final byte[] BUILD_FINGERPRINT_AND_DEVICE_SERIAL = getBuildFingerprintAndDeviceSerial(); + + /** Hidden constructor to prevent instantiation. */ + private PRNGFixes() { + } + + /** + * Applies all fixes. + * + * @throws SecurityException + * if a fix is needed but could not be applied. + */ + public static void apply() { + applyOpenSSLFix(); + installLinuxPRNGSecureRandom(); + } + + /** + * Applies the fix for OpenSSL PRNG having low entropy. Does nothing if the + * fix is not needed. + * + * @throws SecurityException + * if the fix is needed but could not be applied. + */ + private static void applyOpenSSLFix() throws SecurityException { + if ((Build.VERSION.SDK_INT < VERSION_CODE_JELLY_BEAN) + || (Build.VERSION.SDK_INT > VERSION_CODE_JELLY_BEAN_MR2)) { + // No need to apply the fix + return; + } + + try { + // Mix in the device- and invocation-specific seed. + Class.forName("org.apache.harmony.xnet.provider.jsse.NativeCrypto") + .getMethod("RAND_seed", byte[].class) + .invoke(null, generateSeed()); + + // Mix output of Linux PRNG into OpenSSL's PRNG + int bytesRead = (Integer) Class + .forName( + "org.apache.harmony.xnet.provider.jsse.NativeCrypto") + .getMethod("RAND_load_file", String.class, long.class) + .invoke(null, "/dev/urandom", 1024); + if (bytesRead != 1024) { + throw new IOException( + "Unexpected number of bytes read from Linux PRNG: " + + bytesRead); + } + } catch (Exception e) { + throw new SecurityException("Failed to seed OpenSSL PRNG", e); + } + } + + /** + * Installs a Linux PRNG-backed {@code SecureRandom} implementation as the + * default. Does nothing if the implementation is already the default or if + * there is not need to install the implementation. + * + * @throws SecurityException + * if the fix is needed but could not be applied. + */ + private static void installLinuxPRNGSecureRandom() throws SecurityException { + if (Build.VERSION.SDK_INT > VERSION_CODE_JELLY_BEAN_MR2) { + // No need to apply the fix + return; + } + + // Install a Linux PRNG-based SecureRandom implementation as the + // default, if not yet installed. + Provider[] secureRandomProviders = Security + .getProviders("SecureRandom.SHA1PRNG"); + if ((secureRandomProviders == null) + || (secureRandomProviders.length < 1) + || (!LinuxPRNGSecureRandomProvider.class + .equals(secureRandomProviders[0].getClass()))) { + Security.insertProviderAt(new LinuxPRNGSecureRandomProvider(), 1); + } + + // Assert that new SecureRandom() and + // SecureRandom.getInstance("SHA1PRNG") return a SecureRandom backed + // by the Linux PRNG-based SecureRandom implementation. + SecureRandom rng1 = new SecureRandom(); + if (!LinuxPRNGSecureRandomProvider.class.equals(rng1.getProvider() + .getClass())) { + throw new SecurityException( + "new SecureRandom() backed by wrong Provider: " + + rng1.getProvider().getClass()); + } + + SecureRandom rng2; + try { + rng2 = SecureRandom.getInstance("SHA1PRNG"); + } catch (NoSuchAlgorithmException e) { + throw new SecurityException("SHA1PRNG not available", e); + } + if (!LinuxPRNGSecureRandomProvider.class.equals(rng2.getProvider() + .getClass())) { + throw new SecurityException( + "SecureRandom.getInstance(\"SHA1PRNG\") backed by wrong" + + " Provider: " + rng2.getProvider().getClass()); + } + } + + /** + * {@code Provider} of {@code SecureRandom} engines which pass through all + * requests to the Linux PRNG. + */ + private static class LinuxPRNGSecureRandomProvider extends Provider { + + public LinuxPRNGSecureRandomProvider() { + super("LinuxPRNG", 1.0, + "A Linux-specific random number provider that uses" + + " /dev/urandom"); + // Although /dev/urandom is not a SHA-1 PRNG, some apps + // explicitly request a SHA1PRNG SecureRandom and we thus need to + // prevent them from getting the default implementation whose output + // may have low entropy. + put("SecureRandom.SHA1PRNG", LinuxPRNGSecureRandom.class.getName()); + put("SecureRandom.SHA1PRNG ImplementedIn", "Software"); + } + } + + /** + * {@link SecureRandomSpi} which passes all requests to the Linux PRNG ( + * {@code /dev/urandom}). + */ + public static class LinuxPRNGSecureRandom extends SecureRandomSpi { + + /* + * IMPLEMENTATION NOTE: Requests to generate bytes and to mix in a seed + * are passed through to the Linux PRNG (/dev/urandom). Instances of + * this class seed themselves by mixing in the current time, PID, UID, + * build fingerprint, and hardware serial number (where available) into + * Linux PRNG. + * + * Concurrency: Read requests to the underlying Linux PRNG are + * serialized (on sLock) to ensure that multiple threads do not get + * duplicated PRNG output. + */ + + private static final File URANDOM_FILE = new File("/dev/urandom"); + + private static final Object sLock = new Object(); + + /** + * Input stream for reading from Linux PRNG or {@code null} if not yet + * opened. + * + * @GuardedBy("sLock") + */ + private static DataInputStream sUrandomIn; + + /** + * Output stream for writing to Linux PRNG or {@code null} if not yet + * opened. + * + * @GuardedBy("sLock") + */ + private static OutputStream sUrandomOut; + + /** + * Whether this engine instance has been seeded. This is needed because + * each instance needs to seed itself if the client does not explicitly + * seed it. + */ + private boolean mSeeded; + + @Override + protected void engineSetSeed(byte[] bytes) { + try { + OutputStream out; + synchronized (sLock) { + out = getUrandomOutputStream(); + } + out.write(bytes); + out.flush(); + } catch (IOException e) { + // On a small fraction of devices /dev/urandom is not writable. + // Log and ignore. + Log.w(PRNGFixes.class.getSimpleName(), + "Failed to mix seed into " + URANDOM_FILE); + } finally { + mSeeded = true; + } + } + + @Override + protected void engineNextBytes(byte[] bytes) { + if (!mSeeded) { + // Mix in the device- and invocation-specific seed. + engineSetSeed(generateSeed()); + } + + try { + DataInputStream in; + synchronized (sLock) { + in = getUrandomInputStream(); + } + synchronized (in) { + in.readFully(bytes); + } + } catch (IOException e) { + throw new SecurityException("Failed to read from " + + URANDOM_FILE, e); + } + } + + @Override + protected byte[] engineGenerateSeed(int size) { + byte[] seed = new byte[size]; + engineNextBytes(seed); + return seed; + } + + private DataInputStream getUrandomInputStream() { + synchronized (sLock) { + if (sUrandomIn == null) { + // NOTE: Consider inserting a BufferedInputStream between + // DataInputStream and FileInputStream if you need higher + // PRNG output performance and can live with future PRNG + // output being pulled into this process prematurely. + try { + sUrandomIn = new DataInputStream(new FileInputStream( + URANDOM_FILE)); + } catch (IOException e) { + throw new SecurityException("Failed to open " + + URANDOM_FILE + " for reading", e); + } + } + return sUrandomIn; + } + } + + private OutputStream getUrandomOutputStream() throws IOException { + synchronized (sLock) { + if (sUrandomOut == null) { + sUrandomOut = new FileOutputStream(URANDOM_FILE); + } + return sUrandomOut; + } + } + } + + /** + * Generates a device- and invocation-specific seed to be mixed into the + * Linux PRNG. + */ + private static byte[] generateSeed() { + try { + ByteArrayOutputStream seedBuffer = new ByteArrayOutputStream(); + DataOutputStream seedBufferOut = new DataOutputStream(seedBuffer); + seedBufferOut.writeLong(System.currentTimeMillis()); + seedBufferOut.writeLong(System.nanoTime()); + seedBufferOut.writeInt(Process.myPid()); + seedBufferOut.writeInt(Process.myUid()); + seedBufferOut.write(BUILD_FINGERPRINT_AND_DEVICE_SERIAL); + seedBufferOut.close(); + return seedBuffer.toByteArray(); + } catch (IOException e) { + throw new SecurityException("Failed to generate seed", e); + } + } + + /** + * Gets the hardware serial number of this device. + * + * @return serial number or {@code null} if not available. + */ + private static String getDeviceSerialNumber() { + // We're using the Reflection API because Build.SERIAL is only available + // since API Level 9 (Gingerbread, Android 2.3). + try { + return (String) Build.class.getField("SERIAL").get(null); + } catch (Exception ignored) { + return null; + } + } + + private static byte[] getBuildFingerprintAndDeviceSerial() { + StringBuilder result = new StringBuilder(); + String fingerprint = Build.FINGERPRINT; + if (fingerprint != null) { + result.append(fingerprint); + } + String serial = getDeviceSerialNumber(); + if (serial != null) { + result.append(serial); + } + try { + return result.toString().getBytes("UTF-8"); + } catch (UnsupportedEncodingException e) { + throw new RuntimeException("UTF-8 encoding not supported"); + } + } +}
\ No newline at end of file diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/PhoneHelper.java b/conversations/src/main/java/eu/siacs/conversations/utils/PhoneHelper.java new file mode 100644 index 00000000..5becc7e7 --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/PhoneHelper.java @@ -0,0 +1,95 @@ +package eu.siacs.conversations.utils; + +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.RejectedExecutionException; + +import android.content.Context; +import android.content.CursorLoader; +import android.content.Loader; +import android.content.Loader.OnLoadCompleteListener; +import android.database.Cursor; +import android.net.Uri; +import android.os.Bundle; +import android.provider.ContactsContract; +import android.provider.ContactsContract.Profile; + +public class PhoneHelper { + + public static void loadPhoneContacts(Context context, + final OnPhoneContactsLoadedListener listener) { + final List<Bundle> phoneContacts = new ArrayList<Bundle>(); + + final String[] PROJECTION = new String[] { ContactsContract.Data._ID, + ContactsContract.Data.DISPLAY_NAME, + ContactsContract.Data.PHOTO_URI, + ContactsContract.Data.LOOKUP_KEY, + ContactsContract.CommonDataKinds.Im.DATA }; + + final String SELECTION = "(" + ContactsContract.Data.MIMETYPE + "=\"" + + ContactsContract.CommonDataKinds.Im.CONTENT_ITEM_TYPE + + "\") AND (" + ContactsContract.CommonDataKinds.Im.PROTOCOL + + "=\"" + ContactsContract.CommonDataKinds.Im.PROTOCOL_JABBER + + "\")"; + + CursorLoader mCursorLoader = new CursorLoader(context, + ContactsContract.Data.CONTENT_URI, PROJECTION, SELECTION, null, + null); + mCursorLoader.registerListener(0, new OnLoadCompleteListener<Cursor>() { + + @Override + public void onLoadComplete(Loader<Cursor> arg0, Cursor cursor) { + if (cursor == null) { + return; + } + while (cursor.moveToNext()) { + Bundle contact = new Bundle(); + contact.putInt("phoneid", cursor.getInt(cursor + .getColumnIndex(ContactsContract.Data._ID))); + contact.putString( + "displayname", + cursor.getString(cursor + .getColumnIndex(ContactsContract.Data.DISPLAY_NAME))); + contact.putString("photouri", cursor.getString(cursor + .getColumnIndex(ContactsContract.Data.PHOTO_URI))); + contact.putString("lookup", cursor.getString(cursor + .getColumnIndex(ContactsContract.Data.LOOKUP_KEY))); + + contact.putString( + "jid", + cursor.getString(cursor + .getColumnIndex(ContactsContract.CommonDataKinds.Im.DATA))); + phoneContacts.add(contact); + } + if (listener != null) { + listener.onPhoneContactsLoaded(phoneContacts); + } + } + }); + try { + mCursorLoader.startLoading(); + } catch (RejectedExecutionException e) { + if (listener != null) { + listener.onPhoneContactsLoaded(phoneContacts); + } + } + } + + public static Uri getSefliUri(Context context) { + String[] mProjection = new String[] { Profile._ID, Profile.PHOTO_URI }; + Cursor mProfileCursor = context.getContentResolver().query( + Profile.CONTENT_URI, mProjection, null, null, null); + + if (mProfileCursor == null || mProfileCursor.getCount() == 0) { + return null; + } else { + mProfileCursor.moveToFirst(); + String uri = mProfileCursor.getString(1); + if (uri == null) { + return null; + } else { + return Uri.parse(uri); + } + } + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/UIHelper.java b/conversations/src/main/java/eu/siacs/conversations/utils/UIHelper.java new file mode 100644 index 00000000..5141c83c --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/UIHelper.java @@ -0,0 +1,225 @@ +package eu.siacs.conversations.utils; + +import java.util.ArrayList; +import java.util.Calendar; +import java.util.Date; +import java.util.List; +import java.util.regex.Pattern; + +import eu.siacs.conversations.R; +import eu.siacs.conversations.entities.Account; +import eu.siacs.conversations.entities.Contact; +import eu.siacs.conversations.entities.Conversation; +import eu.siacs.conversations.ui.ConversationActivity; +import eu.siacs.conversations.ui.ManageAccountActivity; +import android.annotation.SuppressLint; +import android.app.AlertDialog; +import android.app.Notification; +import android.app.NotificationManager; +import android.app.PendingIntent; +import android.content.Context; +import android.content.DialogInterface; +import android.content.DialogInterface.OnClickListener; +import android.content.Intent; +import android.support.v4.app.NotificationCompat; +import android.support.v4.app.TaskStackBuilder; +import android.text.format.DateFormat; +import android.text.format.DateUtils; +import android.view.LayoutInflater; +import android.view.View; +import android.widget.TextView; + +public class UIHelper { + private static final int SHORT_DATE_FLAGS = DateUtils.FORMAT_SHOW_DATE + | DateUtils.FORMAT_NO_YEAR | DateUtils.FORMAT_ABBREV_ALL; + private static final int FULL_DATE_FLAGS = DateUtils.FORMAT_SHOW_TIME + | DateUtils.FORMAT_ABBREV_ALL | DateUtils.FORMAT_SHOW_DATE; + + public static String readableTimeDifference(Context context, long time) { + return readableTimeDifference(context, time, false); + } + + public static String readableTimeDifferenceFull(Context context, long time) { + return readableTimeDifference(context, time, true); + } + + private static String readableTimeDifference(Context context, long time, + boolean fullDate) { + if (time == 0) { + return context.getString(R.string.just_now); + } + Date date = new Date(time); + long difference = (System.currentTimeMillis() - time) / 1000; + if (difference < 60) { + return context.getString(R.string.just_now); + } else if (difference < 60 * 2) { + return context.getString(R.string.minute_ago); + } else if (difference < 60 * 15) { + return context.getString(R.string.minutes_ago, + Math.round(difference / 60.0)); + } else if (today(date)) { + java.text.DateFormat df = DateFormat.getTimeFormat(context); + return df.format(date); + } else { + if (fullDate) { + return DateUtils.formatDateTime(context, date.getTime(), + FULL_DATE_FLAGS); + } else { + return DateUtils.formatDateTime(context, date.getTime(), + SHORT_DATE_FLAGS); + } + } + } + + private static boolean today(Date date) { + Calendar cal1 = Calendar.getInstance(); + Calendar cal2 = Calendar.getInstance(); + cal1.setTime(date); + cal2.setTimeInMillis(System.currentTimeMillis()); + return cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) + && cal1.get(Calendar.DAY_OF_YEAR) == cal2 + .get(Calendar.DAY_OF_YEAR); + } + + public static String lastseen(Context context, long time) { + if (time == 0) { + return context.getString(R.string.never_seen); + } + long difference = (System.currentTimeMillis() - time) / 1000; + if (difference < 60) { + return context.getString(R.string.last_seen_now); + } else if (difference < 60 * 2) { + return context.getString(R.string.last_seen_min); + } else if (difference < 60 * 60) { + return context.getString(R.string.last_seen_mins, + Math.round(difference / 60.0)); + } else if (difference < 60 * 60 * 2) { + return context.getString(R.string.last_seen_hour); + } else if (difference < 60 * 60 * 24) { + return context.getString(R.string.last_seen_hours, + Math.round(difference / (60.0 * 60.0))); + } else if (difference < 60 * 60 * 48) { + return context.getString(R.string.last_seen_day); + } else { + return context.getString(R.string.last_seen_days, + Math.round(difference / (60.0 * 60.0 * 24.0))); + } + } + + public static void showErrorNotification(Context context, + List<Account> accounts) { + NotificationManager mNotificationManager = (NotificationManager) context + .getSystemService(Context.NOTIFICATION_SERVICE); + List<Account> accountsWproblems = new ArrayList<Account>(); + for (Account account : accounts) { + if (account.hasErrorStatus()) { + accountsWproblems.add(account); + } + } + NotificationCompat.Builder mBuilder = new NotificationCompat.Builder( + context); + if (accountsWproblems.size() == 0) { + mNotificationManager.cancel(1111); + return; + } else if (accountsWproblems.size() == 1) { + mBuilder.setContentTitle(context + .getString(R.string.problem_connecting_to_account)); + mBuilder.setContentText(accountsWproblems.get(0).getJid()); + } else { + mBuilder.setContentTitle(context + .getString(R.string.problem_connecting_to_accounts)); + mBuilder.setContentText(context.getString(R.string.touch_to_fix)); + } + mBuilder.setOngoing(true); + mBuilder.setLights(0xffffffff, 2000, 4000); + mBuilder.setSmallIcon(R.drawable.ic_notification); + TaskStackBuilder stackBuilder = TaskStackBuilder.create(context); + stackBuilder.addParentStack(ConversationActivity.class); + + Intent manageAccountsIntent = new Intent(context, + ManageAccountActivity.class); + stackBuilder.addNextIntent(manageAccountsIntent); + + PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, + PendingIntent.FLAG_UPDATE_CURRENT); + + mBuilder.setContentIntent(resultPendingIntent); + Notification notification = mBuilder.build(); + mNotificationManager.notify(1111, notification); + } + + @SuppressLint("InflateParams") + public static AlertDialog getVerifyFingerprintDialog( + final ConversationActivity activity, + final Conversation conversation, final View msg) { + final Contact contact = conversation.getContact(); + final Account account = conversation.getAccount(); + + AlertDialog.Builder builder = new AlertDialog.Builder(activity); + builder.setTitle("Verify fingerprint"); + LayoutInflater inflater = activity.getLayoutInflater(); + View view = inflater.inflate(R.layout.dialog_verify_otr, null); + TextView jid = (TextView) view.findViewById(R.id.verify_otr_jid); + TextView fingerprint = (TextView) view + .findViewById(R.id.verify_otr_fingerprint); + TextView yourprint = (TextView) view + .findViewById(R.id.verify_otr_yourprint); + + jid.setText(contact.getJid()); + fingerprint.setText(conversation.getOtrFingerprint()); + yourprint.setText(account.getOtrFingerprint()); + builder.setNegativeButton("Cancel", null); + builder.setPositiveButton("Verify", new OnClickListener() { + + @Override + public void onClick(DialogInterface dialog, int which) { + contact.addOtrFingerprint(conversation.getOtrFingerprint()); + msg.setVisibility(View.GONE); + activity.xmppConnectionService.syncRosterToDisk(account); + } + }); + builder.setView(view); + return builder.create(); + } + + private final static class EmoticonPattern { + Pattern pattern; + String replacement; + + EmoticonPattern(String ascii, int unicode) { + this.pattern = Pattern.compile("(?<=(^|\\s))" + ascii + + "(?=(\\s|$))"); + this.replacement = new String(new int[] { unicode, }, 0, 1); + } + + String replaceAll(String body) { + return pattern.matcher(body).replaceAll(replacement); + } + } + + private static final EmoticonPattern[] patterns = new EmoticonPattern[] { + new EmoticonPattern(":-?D", 0x1f600), + new EmoticonPattern("\\^\\^", 0x1f601), + new EmoticonPattern(":'D", 0x1f602), + new EmoticonPattern("\\]-?D", 0x1f608), + new EmoticonPattern(";-?\\)", 0x1f609), + new EmoticonPattern(":-?\\)", 0x1f60a), + new EmoticonPattern("[B8]-?\\)", 0x1f60e), + new EmoticonPattern(":-?\\|", 0x1f610), + new EmoticonPattern(":-?[/\\\\]", 0x1f615), + new EmoticonPattern(":-?\\*", 0x1f617), + new EmoticonPattern(":-?[Ppb]", 0x1f61b), + new EmoticonPattern(":-?\\(", 0x1f61e), + new EmoticonPattern(":-?[0Oo]", 0x1f62e), + new EmoticonPattern("\\\\o/", 0x1F631), }; + + public static String transformAsciiEmoticons(String body) { + if (body != null) { + for (EmoticonPattern p : patterns) { + body = p.replaceAll(body); + } + body = body.trim(); + } + return body; + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/Validator.java b/conversations/src/main/java/eu/siacs/conversations/utils/Validator.java new file mode 100644 index 00000000..00130fa2 --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/Validator.java @@ -0,0 +1,14 @@ +package eu.siacs.conversations.utils; + +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +public class Validator { + public static final Pattern VALID_JID = Pattern.compile( + "^[^@/<>'\"\\s]+@[^@/<>'\"\\s]+$", Pattern.CASE_INSENSITIVE); + + public static boolean isValidJid(String jid) { + Matcher matcher = VALID_JID.matcher(jid); + return matcher.find(); + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/XmlHelper.java b/conversations/src/main/java/eu/siacs/conversations/utils/XmlHelper.java new file mode 100644 index 00000000..4dee07cf --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/XmlHelper.java @@ -0,0 +1,12 @@ +package eu.siacs.conversations.utils; + +public class XmlHelper { + public static String encodeEntities(String content) { + content = content.replace("&", "&"); + content = content.replace("<", "<"); + content = content.replace(">", ">"); + content = content.replace("\"", """); + content = content.replace("'", "'"); + return content; + } +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/zlib/ZLibInputStream.java b/conversations/src/main/java/eu/siacs/conversations/utils/zlib/ZLibInputStream.java new file mode 100644 index 00000000..b777c10c --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/zlib/ZLibInputStream.java @@ -0,0 +1,54 @@ +package eu.siacs.conversations.utils.zlib; + +import java.io.IOException; +import java.io.InputStream; +import java.util.zip.Inflater; +import java.util.zip.InflaterInputStream; + +/** + * ZLibInputStream is a zlib and input stream compatible version of an + * InflaterInputStream. This class solves the incompatibility between + * {@link InputStream#available()} and {@link InflaterInputStream#available()}. + */ +public class ZLibInputStream extends InflaterInputStream { + + /** + * Construct a ZLibInputStream, reading data from the underlying stream. + * + * @param is + * The {@code InputStream} to read data from. + * @throws IOException + * If an {@code IOException} occurs. + */ + public ZLibInputStream(InputStream is) throws IOException { + super(is, new Inflater(), 512); + } + + /** + * Provide a more InputStream compatible version of available. A return + * value of 1 means that it is likly to read one byte without blocking, 0 + * means that the system is known to block for more input. + * + * @return 0 if no data is available, 1 otherwise + * @throws IOException + */ + @Override + public int available() throws IOException { + /* + * This is one of the funny code blocks. InflaterInputStream.available + * violates the contract of InputStream.available, which breaks kXML2. + * + * I'm not sure who's to blame, oracle/sun for a broken api or the + * google guys for mixing a sun bug with a xml reader that can't handle + * it.... + * + * Anyway, this simple if breaks suns distorted reality, but helps to + * use the api as intended. + */ + if (inf.needsInput()) { + return 0; + } + return super.available(); + } + +} diff --git a/conversations/src/main/java/eu/siacs/conversations/utils/zlib/ZLibOutputStream.java b/conversations/src/main/java/eu/siacs/conversations/utils/zlib/ZLibOutputStream.java new file mode 100644 index 00000000..8b3f5e68 --- /dev/null +++ b/conversations/src/main/java/eu/siacs/conversations/utils/zlib/ZLibOutputStream.java @@ -0,0 +1,95 @@ +package eu.siacs.conversations.utils.zlib; + +import java.io.IOException; +import java.io.OutputStream; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.security.NoSuchAlgorithmException; +import java.util.zip.Deflater; +import java.util.zip.DeflaterOutputStream; + +/** + * <p> + * Android 2.2 includes Java7 FLUSH_SYNC option, which will be used by this + * Implementation, preferable via reflection. The @hide was remove in API level + * 19. This class might thus go away in the future. + * </p> + * <p> + * Please use {@link ZLibOutputStream#SUPPORTED} to check for flush + * compatibility. + * </p> + */ +public class ZLibOutputStream extends DeflaterOutputStream { + + /** + * The reflection based flush method. + */ + + private final static Method method; + /** + * SUPPORTED is true if a flush compatible method exists. + */ + public final static boolean SUPPORTED; + + /** + * Static block to initialize {@link #SUPPORTED} and {@link #method}. + */ + static { + Method m = null; + try { + m = Deflater.class.getMethod("deflate", byte[].class, int.class, + int.class, int.class); + } catch (SecurityException e) { + } catch (NoSuchMethodException e) { + } + method = m; + SUPPORTED = (method != null); + } + + /** + * Create a new ZLib compatible output stream wrapping the given low level + * stream. ZLib compatiblity means we will send a zlib header. + * + * @param os + * OutputStream The underlying stream. + * @throws IOException + * In case of a lowlevel transfer problem. + * @throws NoSuchAlgorithmException + * In case of a {@link Deflater} error. + */ + public ZLibOutputStream(OutputStream os) throws IOException, + NoSuchAlgorithmException { + super(os, new Deflater(Deflater.BEST_COMPRESSION)); + } + + /** + * Flush the given stream, preferring Java7 FLUSH_SYNC if available. + * + * @throws IOException + * In case of a lowlevel exception. + */ + @Override + public void flush() throws IOException { + if (!SUPPORTED) { + super.flush(); + return; + } + try { + int count = 0; + do { + count = (Integer) method.invoke(def, buf, 0, buf.length, 3); + if (count > 0) { + out.write(buf, 0, count); + } + } while (count > 0); + } catch (IllegalArgumentException e) { + throw new IOException("Can't flush"); + } catch (IllegalAccessException e) { + throw new IOException("Can't flush"); + } catch (InvocationTargetException e) { + throw new IOException("Can't flush"); + } + super.flush(); + } + +} |