PppLinkpublic final class PppLink extends DataLink implements DataLinkInterface| Represents a PPP link.
Ideally this would be managed by the RIL implementation, but
we currently have implementations where this is not the case.
{@hide} |
| Fields Summary |
|---|
| private static final String | LOG_TAG | | static final String | PATH_PPP_OPERSTATE | | static final String | SERVICE_PPPD_GPRS | | static final String | PROPERTY_PPPD_EXIT_CODE | | static final int | POLL_SYSFS_MILLIS | | static final int | EVENT_POLL_DATA_CONNECTION | | static final int | EVENT_PPP_OPERSTATE_CHANGED | | static final int | EVENT_PPP_PIDFILE_CHANGED | | static final byte[] | UP_ASCII_STRING | | static final byte[] | DOWN_ASCII_STRING | | static final byte[] | UNKNOWN_ASCII_STRING | | private final byte[] | mCheckPPPBuffer | | int | lastPppdExitCode |
| Methods Summary |
|---|
| private void | checkPPP()
boolean connecting = (dataConnection.state == State.CONNECTING);
try {
RandomAccessFile file = new RandomAccessFile(PATH_PPP_OPERSTATE, "r");
file.read(mCheckPPPBuffer);
file.close();
// Unfortunately, we're currently seeing operstate
// "unknown" where one might otherwise expect "up"
if (ArrayUtils.equals(mCheckPPPBuffer, UP_ASCII_STRING, UP_ASCII_STRING.length)
|| ArrayUtils.equals(mCheckPPPBuffer, UNKNOWN_ASCII_STRING,
UNKNOWN_ASCII_STRING.length)
&& dataConnection.state == State.CONNECTING) {
Log.i(LOG_TAG,
"found ppp interface. Notifying GPRS connected");
if (mLinkChangeRegistrant != null) {
mLinkChangeRegistrant.notifyResult(LinkState.LINK_UP);
}
connecting = false;
} else if (dataConnection.state == State.CONNECTED
&& ArrayUtils.equals(mCheckPPPBuffer, DOWN_ASCII_STRING,
DOWN_ASCII_STRING.length)) {
Log.i(LOG_TAG,
"ppp interface went down. Reconnecting...");
if (mLinkChangeRegistrant != null) {
mLinkChangeRegistrant.notifyResult(LinkState.LINK_DOWN);
}
}
} catch (IOException ex) {
if (! (ex instanceof FileNotFoundException)) {
Log.i(LOG_TAG, "Poll ppp0 ex " + ex.toString());
}
if (dataConnection.state == State.CONNECTED &&
mLinkChangeRegistrant != null) {
mLinkChangeRegistrant.notifyResult(LinkState.LINK_DOWN);
}
}
// CONNECTING means pppd has started but negotiation is not complete
// If we're still CONNECTING here, check to see if pppd has
// already exited
if (connecting) {
String exitCode;
exitCode = SystemProperties.get(PROPERTY_PPPD_EXIT_CODE, "");
if (!exitCode.equals("")) {
// pppd has exited. Let's figure out why
lastPppdExitCode = Integer.parseInt(exitCode);
Log.d(LOG_TAG,"pppd exited with " + exitCode);
if (mLinkChangeRegistrant != null) {
mLinkChangeRegistrant.notifyResult(LinkState.LINK_EXITED);
}
}
}
| | public void | connect()
// Clear any previous exit code
SystemProperties.set(PROPERTY_PPPD_EXIT_CODE, "");
SystemService.start(SERVICE_PPPD_GPRS);
removeMessages(EVENT_POLL_DATA_CONNECTION);
Message poll = obtainMessage();
poll.what = EVENT_POLL_DATA_CONNECTION;
sendMessageDelayed(poll, POLL_SYSFS_MILLIS);
| | public void | disconnect()
SystemService.stop(SERVICE_PPPD_GPRS);
| | public int | getLastLinkExitCode()
return lastPppdExitCode;
| | public void | handleMessage(android.os.Message msg)
switch (msg.what) {
case EVENT_POLL_DATA_CONNECTION:
checkPPP();
// keep polling in case interface goes down
if (dataConnection.state != State.IDLE) {
Message poll = obtainMessage();
poll.what = EVENT_POLL_DATA_CONNECTION;
sendMessageDelayed(poll, POLL_SYSFS_MILLIS);
}
break;
}
| | public void | setPasswordInfo(android.database.Cursor cursor)
StringBuilder builder = new StringBuilder();
FileOutputStream output = null;
try {
output = new FileOutputStream("/etc/ppp/pap-secrets");
if (cursor.moveToFirst()) {
do {
builder.append(cursor.getString(cursor.getColumnIndex("user")));
builder.append(" ");
builder.append(cursor.getString(cursor.getColumnIndex("server")));
builder.append(" ");
builder.append(cursor.getString(cursor.getColumnIndex("password")));
builder.append("\n");
} while (cursor.moveToNext());
}
output.write(builder.toString().getBytes());
} catch (java.io.IOException e) {
Log.e(LOG_TAG, "Could not create '/etc/ppp/pap-secrets'", e);
} finally {
try {
if (output != null) output.close();
} catch (java.io.IOException e) {
Log.e(LOG_TAG, "Error closing '/etc/ppp/pap-secrets'", e);
}
}
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