/**
* Get a new modhash by scraping and return it
*
* @param client
* @return
*/
public static String doUpdateModhash(HttpClient client) {
final Pattern MODHASH_PATTERN = Pattern.compile("modhash: '(.*?)'");
String modhash;
HttpEntity entity = null;
// The pattern to find modhash from HTML javascript area
try {
HttpGet httpget = new HttpGet(Constants.MODHASH_URL);
HttpResponse response = client.execute(httpget);
// For modhash, we don't care about the status, since the 404 page has the info we want.
// status = response.getStatusLine().toString();
// if (!status.contains("OK"))
// throw new HttpException(status);
entity = response.getEntity();
BufferedReader in = new BufferedReader(new InputStreamReader(entity.getContent()));
// modhash should appear within first 1200 chars
char[] buffer = new char[1200];
in.read(buffer, 0, 1200);
in.close();
String line = String.valueOf(buffer);
entity.consumeContent();
if (StringUtils.isEmpty(line)) {
throw new HttpException(
"No content returned from doUpdateModhash GET to " + Constants.MODHASH_URL);
}
if (line.contains("USER_REQUIRED")) {
throw new Exception("User session error: USER_REQUIRED");
}
Matcher modhashMatcher = MODHASH_PATTERN.matcher(line);
if (modhashMatcher.find()) {
modhash = modhashMatcher.group(1);
if (StringUtils.isEmpty(modhash)) {
// Means user is not actually logged in.
return null;
}
} else {
throw new Exception("No modhash found at URL " + Constants.MODHASH_URL);
}
if (Constants.LOGGING) Common.logDLong(TAG, line);
if (Constants.LOGGING) Log.d(TAG, "modhash: " + modhash);
return modhash;
} catch (Exception e) {
if (entity != null) {
try {
entity.consumeContent();
} catch (Exception e2) {
if (Constants.LOGGING) Log.e(TAG, "entity.consumeContent()", e);
}
}
if (Constants.LOGGING) Log.e(TAG, "doUpdateModhash()", e);
return null;
}
}
public static String checkResponseErrors(HttpResponse response, HttpEntity entity) {
String status = response.getStatusLine().toString();
String line;
if (!status.contains("OK")) {
return "HTTP error. Status = " + status;
}
try {
BufferedReader in = new BufferedReader(new InputStreamReader(entity.getContent()));
line = in.readLine();
if (Constants.LOGGING) Common.logDLong(TAG, line);
in.close();
} catch (IOException e) {
if (Constants.LOGGING) Log.e(TAG, "IOException", e);
return "Error reading retrieved data.";
}
if (StringUtils.isEmpty(line)) {
return "API returned empty data.";
}
if (line.contains("WRONG_PASSWORD")) {
return "Wrong password.";
}
if (line.contains("USER_REQUIRED")) {
// The modhash probably expired
return "Login expired.";
}
if (line.contains("SUBREDDIT_NOEXIST")) {
return "That subreddit does not exist.";
}
if (line.contains("SUBREDDIT_NOTALLOWED")) {
return "You are not allowed to post to that subreddit.";
}
return null;
}
public static String checkIDResponse(HttpResponse response, HttpEntity entity)
throws CaptchaException, Exception {
// Group 1: fullname. Group 2: kind. Group 3: id36.
final Pattern NEW_ID_PATTERN = Pattern.compile("\"id\": \"((.+?)_(.+?))\"");
// Group 1: whole error. Group 2: the time part
final Pattern RATELIMIT_RETRY_PATTERN =
Pattern.compile("(you are trying to submit too fast. try again in (.+?)\\.)");
String status = response.getStatusLine().toString();
String line;
if (!status.contains("OK")) {
throw new Exception("HTTP error. Status = " + status);
}
try {
BufferedReader in = new BufferedReader(new InputStreamReader(entity.getContent()));
line = in.readLine();
if (Constants.LOGGING) Common.logDLong(TAG, line);
in.close();
} catch (IOException e) {
if (Constants.LOGGING) Log.e(TAG, "IOException", e);
throw new Exception("Error reading retrieved data.");
}
if (StringUtils.isEmpty(line)) {
throw new Exception("API returned empty data.");
}
if (line.contains("WRONG_PASSWORD")) {
throw new Exception("Wrong password.");
}
if (line.contains("USER_REQUIRED")) {
// The modhash probably expired
throw new Exception("Login expired.");
}
if (line.contains("SUBREDDIT_NOEXIST")) {
throw new Exception("That subreddit does not exist.");
}
if (line.contains("SUBREDDIT_NOTALLOWED")) {
throw new Exception("You are not allowed to post to that subreddit.");
}
String newId;
Matcher idMatcher = NEW_ID_PATTERN.matcher(line);
if (idMatcher.find()) {
newId = idMatcher.group(3);
} else {
if (line.contains("RATELIMIT")) {
// Try to find the # of minutes using regex
Matcher rateMatcher = RATELIMIT_RETRY_PATTERN.matcher(line);
if (rateMatcher.find()) throw new Exception(rateMatcher.group(1));
else throw new Exception("you are trying to submit too fast. try again in a few minutes.");
}
if (line.contains("DELETED_LINK")) {
throw new Exception("the link you are commenting on has been deleted");
}
if (line.contains("BAD_CAPTCHA")) {
throw new CaptchaException("Bad CAPTCHA. Try again.");
}
// No id returned by reply POST.
return null;
}
// Getting here means success.
return newId;
}
