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< > BotCompany Repo | #1014225 - simpleSpamClientDetect2

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (2676L/17K).

scope simpleSpamClientDetect2.

static int #interval = 60000;
static double #perSecondThreshold = 2.0; // per IP + URI
static int #spamMax;
static Set<S> #whiteList = syncSet(myIPs());
static Lock #myLock = lock();

// ip + uri -> time, count
static Map<PairS, Pair<Long, Int>> #ipsAndUris = synchroMap();

// returns pair(count, bad)
static Pair<Int, Bool> simpleSpamClientDetect2(S clientIP, S uri) {
  lock myLock;
  // TODO: clean up map sometimes
  Pair<S> pair = pair(clientIP, uri);
  Pair<Long, Int> value = ipsAndUris.get(pair);
  if (value == null || now() > value.a+interval)
    ipsAndUris.put(pair, value = pair(now(), 1));
  else
    value.b++;
  spamMax = iround(perSecondThreshold*interval/1000);
  ret pair(value.b, !contains(whiteList, clientIP) && value.b >= spamMax);
}

// returns new count
static int #markNoSpam(S clientIP, S uri) {
  lock myLock;
  PairS pair = pair(clientIP, uri);
  Pair<Long, Int> value = ipsAndUris.get(pair);
  if (value != null && value.b > 0) ret --value.b;
  ret -1;
}

end scope

Author comment

Began life as a copy of #1014077

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Snippet ID: #1014225
Snippet name: simpleSpamClientDetect2
Eternal ID of this version: #1014225/8
Text MD5: 6a6c27960c29d6f3eebf34d6977e1dbf
Transpilation MD5: e6daaba8c32f66f0ca587065ac6e94be
Author: stefan
Category: javax / http
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2020-10-27 13:08:06
Source code size: 1062 bytes / 35 lines
Pitched / IR pitched: No / No
Views / Downloads: 281 / 323
Version history: 7 change(s)
Referenced in: [show references]

Formerly at http://tinybrain.de/1014225 & http://1014225.tinybrain.de