Merge remote-tracking branch 'upstream/master'

[nominatim.git] / utils / cron_ipanalyse.py

diff --git a/utils/cron_ipanalyse.py b/utils/cron_ipanalyse.py
index 2d0738af0eade18aa19f4b4b61618e59d87f561b..1ca2267fa4144081020db88545538fb01e76559c 100755 (executable)
--- a/utils/cron_ipanalyse.py
+++ b/utils/cron_ipanalyse.py
@@ -9,6 +9,7 @@
 import re
 import os
 import sys
 import re
 import os
 import sys

+import subprocess

 from datetime import datetime, timedelta
 from collections import defaultdict
 
 from datetime import datetime, timedelta
 from collections import defaultdict
 


@@ -33,6 +34,8 @@ UA_BLOCKLIST = ()
 BLOCKCOOLOFF_DELTA=timedelta(hours=1)
 # quiet time before an IP is released from the bulk pool
 BULKCOOLOFF_DELTA=timedelta(minutes=15)
 BLOCKCOOLOFF_DELTA=timedelta(hours=1)
 # quiet time before an IP is released from the bulk pool
 BULKCOOLOFF_DELTA=timedelta(minutes=15)

+# time to check if new accesses appear despite being blocked
+BLOCKCHECK_DELTA=timedelta(minutes=1)

 
 BULKLONG_LIMIT=8000
 BULKSHORT_LIMIT=2000
 
 BULKLONG_LIMIT=8000
 BULKSHORT_LIMIT=2000


@@ -58,8 +61,8 @@ BLOCK_LIMIT = BLOCK_LOWER
 
 time_regex = r'(?P<t_day>\d\d)/(?P<t_month>[A-Za-z]+)/(?P<t_year>\d\d\d\d):(?P<t_hour>\d\d):(?P<t_min>\d\d):(?P<t_sec>\d\d) [+-]\d\d\d\d'
 
 
 time_regex = r'(?P<t_day>\d\d)/(?P<t_month>[A-Za-z]+)/(?P<t_year>\d\d\d\d):(?P<t_hour>\d\d):(?P<t_min>\d\d):(?P<t_sec>\d\d) [+-]\d\d\d\d'
 

-format_pat= re.compile(r'(?P<ip>[(\d\.)]+) - - \['+ time_regex + r'] "(?P<query>.*?)" (?P<return>\d+) (?P<bytes>\d+) "(?P<referer>.*?)" "(?P<ua>.*?)"')
-time_pat= re.compile(r'[(\d\.)]+ - - \[' + time_regex + '\] ')
+format_pat= re.compile(r'(?P<ip>[a-f\d\.:]+) - - \['+ time_regex + r'] "(?P<query>.*?)" (?P<return>\d+) (?P<bytes>\d+) "(?P<referer>.*?)" "(?P<ua>.*?)"')
+time_pat= re.compile(r'[a-f\d:\.]+ - - \[' + time_regex + '\] ')

 
 logtime_pat = "%d/%b/%Y:%H:%M:%S %z"
 
 
 logtime_pat = "%d/%b/%Y:%H:%M:%S %z"
 


@@ -84,12 +87,16 @@ class LogEntry:
             if qp[0] == 'OPTIONS':
                 self.request = None
             else:
             if qp[0] == 'OPTIONS':
                 self.request = None
             else:

-                if qp[1].startswith('/search'):
+                if '/?' in qp[1]:

                     self.request = 'S'
                     self.request = 'S'

-                elif qp[1].startswith('/reverse'):
+                elif '/search' in qp[1]:
+                    self.request = 'S'
+                elif '/reverse' in qp[1]:

                     self.request = 'R'
                     self.request = 'R'

-                elif qp[1].startswith('/details'):
+                elif '/details' in qp[1]:

                     self.request = 'D'
                     self.request = 'D'

+                elif '/lookup' in qp[1]:
+                    self.request = 'L'

                 else:
                     self.request = None
         self.query = e['query']
                 else:
                     self.request = None
         self.query = e['query']


@@ -124,28 +131,72 @@ class LogFile:
         return LogEntry.get_log_time(l) if l is not None else None
 
     def seek_to_date(self, target):
         return LogEntry.get_log_time(l) if l is not None else None
 
     def seek_to_date(self, target):

-        date1 = self.seek_next(0)
-        if date1 > target:
+        # start position for binary search
+        fromseek = 0
+        fromdate = self.seek_next(0)
+        if fromdate > target:
+            return True
+        # end position for binary search
+        toseek = -100
+        while -toseek < self.len:
+            todate = self.seek_next(self.len + toseek)
+            if todate is not None:
+                break
+            toseek -= 100
+        if todate is None or todate < target:

             return False
             return False

-        curseek = 2*1024*1024
-        curdate = self.seek_next(curseek)
-        if curdate is None:
-            raise RuntimeError("Cannot seek to %d" % curseek)
-        while target < curdate or (target - curdate).total_seconds() > 1:
-            bps = curseek / ((curdate - date1).total_seconds())
-            curseek += (target - curdate).total_seconds() * bps
-            if curseek < 0:
-                curseek = 0
-            elif curseek > self.len:
-                curseek = self.len - bps
-            curdate = self.seek_next(curseek)
-            if curdate is None:
-                raise RuntimeError("Cannot see to %d" % curseek)
-        return True
+        toseek = self.len + toseek
+
+
+        while True:
+            bps = (toseek - fromseek) / (todate - fromdate).total_seconds()
+            newseek = fromseek + int((target - fromdate).total_seconds() * bps)
+            newdate = self.seek_next(newseek)
+            if newdate is None:
+                return False;
+            error = abs((target - newdate).total_seconds())
+            if error < 1:
+                return True
+            if newdate > target:
+                toseek = newseek
+                todate = newdate
+                oldfromseek = fromseek
+                fromseek = toseek - error * bps
+                while True:
+                    if fromseek <= oldfromseek:
+                        fromseek = oldfromseek
+                        fromdate = self.seek_next(fromseek)
+                        break
+                    fromdate = self.seek_next(fromseek)
+                    if fromdate < target:
+                        break;
+                    bps *=2
+                    fromseek -= error * bps
+            else:
+                fromseek = newseek
+                fromdate = newdate
+                oldtoseek = toseek
+                toseek = fromseek + error * bps
+                while True:
+                    if toseek > oldtoseek:
+                        toseek = oldtoseek
+                        todate = self.seek_next(toseek)
+                        break
+                    todate = self.seek_next(toseek)
+                    if todate > target:
+                        break
+                    bps *=2
+                    toseek += error * bps
+            if toseek - fromseek < 500:
+                return True
+

 
     def loglines(self):
         for l in self.fd:
 
     def loglines(self):
         for l in self.fd:

-            yield LogEntry(l)
+            try:
+                yield LogEntry(l)
+            except ValueError:
+                pass # ignore invalid lines

 
 class BlockList:
 
 
 class BlockList:
 


@@ -176,6 +227,7 @@ class IPstats:
         self.short_api = 0
         self.long_total = 0
         self.long_api = 0
         self.short_api = 0
         self.long_total = 0
         self.long_api = 0

+        self.block_total = 0

         self.bad_ua = False
 
     def add_long(self, logentry):
         self.bad_ua = False
 
     def add_long(self, logentry):


@@ -192,16 +244,22 @@ class IPstats:
             self.short_api += 1
         self.add_long(logentry)
 
             self.short_api += 1
         self.add_long(logentry)
 

+    def add_block(self, logentry):
+        self.block_total += 1
+
+    def ignores_warnings(self):
+        return self.block_total > 5
+

     def new_state(self, was_blocked, was_bulked):
         if was_blocked:
             # deblock only if the IP has been really quiet
             # (properly catches the ones that simply ignore the HTTP error)
     def new_state(self, was_blocked, was_bulked):
         if was_blocked:
             # deblock only if the IP has been really quiet
             # (properly catches the ones that simply ignore the HTTP error)

-            return None if self.long_total < 5 else 'block'
+            return None if self.long_total < 20 else 'block'

         if self.long_api > BLOCK_UPPER or self.short_api > BLOCK_UPPER / 3:
                 # client totally overdoing it
                 return 'block'
         if was_bulked:
         if self.long_api > BLOCK_UPPER or self.short_api > BLOCK_UPPER / 3:
                 # client totally overdoing it
                 return 'block'
         if was_bulked:

-            if self.short_total < 5:
+            if self.short_total < 20:

                 # client has stopped, debulk
                 return None
             if self.long_api > BLOCK_LIMIT or self.short_api > BLOCK_LIMIT / 3:
                 # client has stopped, debulk
                 return None
             if self.long_api > BLOCK_LIMIT or self.short_api > BLOCK_LIMIT / 3:


@@ -210,8 +268,8 @@ class IPstats:
             return 'bulk'
 
         if self.long_api > BULKLONG_LIMIT or self.short_api > BULKSHORT_LIMIT:
             return 'bulk'
 
         if self.long_api > BULKLONG_LIMIT or self.short_api > BULKSHORT_LIMIT:

-            if self.bad_ua:
-                return 'uablock' # bad useragent
+            #if self.bad_ua:
+            #    return 'uablock' # bad useragent

             return 'bulk'
 
         return None
             return 'bulk'
 
         return None


@@ -238,6 +296,7 @@ if __name__ == '__main__':
     bl = BlockList()
 
     shortstart = dt + BLOCKCOOLOFF_DELTA - BULKCOOLOFF_DELTA
     bl = BlockList()
 
     shortstart = dt + BLOCKCOOLOFF_DELTA - BULKCOOLOFF_DELTA

+    blockstart = dt + BLOCKCOOLOFF_DELTA - BLOCKCHECK_DELTA

     notlogged = bl.whitelist | bl.blacklist
 
     stats = defaultdict(IPstats)
     notlogged = bl.whitelist | bl.blacklist
 
     stats = defaultdict(IPstats)


@@ -254,22 +313,28 @@ if __name__ == '__main__':
             stats[l.ip].add_short(l)
         if l.request is not None and l.retcode == 200:
             total200 += 1
             stats[l.ip].add_short(l)
         if l.request is not None and l.retcode == 200:
             total200 += 1

+        if l.date > blockstart and l.retcode in (403, 429):
+            stats[l.ip].add_block(l)

 
     # adapt limits according to CPU and DB load
     fd = open("/proc/loadavg")
     cpuload = int(float(fd.readline().split()[2]))
     fd.close()
 
     # adapt limits according to CPU and DB load
     fd = open("/proc/loadavg")
     cpuload = int(float(fd.readline().split()[2]))
     fd.close()

-    dbload = total200 / BULKCOOLOFF_DELTA.total_seconds()
+    # check the number of excess connections to apache
+    dbcons = int(subprocess.check_output("netstat -s | grep 'connections established' | sed 's:^\s*::;s: .*::'", shell=True))
+    fpms = int(subprocess.check_output('ps -Af | grep php-fpm | wc -l', shell=True))
+    dbload = max(0, dbcons - fpms)

 
     numbulks = len(bl.prevbulks)
 
     numbulks = len(bl.prevbulks)

-    BLOCK_LIMIT = max(BLOCK_LIMIT, BLOCK_UPPER - BLOCK_LOADFAC * (dbload - 75))
-    BULKLONG_LIMIT = max(BULK_LOWER, BULKLONG_LIMIT - BULK_LOADFAC * (cpuload - 14))
+    BLOCK_LIMIT = max(BLOCK_LIMIT, BLOCK_UPPER - BLOCK_LOADFAC * dbload)
+    BULKLONG_LIMIT = max(BULK_LOWER, BULKLONG_LIMIT - BULK_LOADFAC * cpuload)

     if numbulks > MAX_BULK_IPS:
         BLOCK_LIMIT = max(3600, BLOCK_LOWER - (numbulks - MAX_BULK_IPS)*10)
     # if the bulk pool is still empty, clients will be faster, avoid having
     # them blocked in this case
     if numbulks < 10:
     if numbulks > MAX_BULK_IPS:
         BLOCK_LIMIT = max(3600, BLOCK_LOWER - (numbulks - MAX_BULK_IPS)*10)
     # if the bulk pool is still empty, clients will be faster, avoid having
     # them blocked in this case
     if numbulks < 10:

-        BLOCK_LIMIT = 2*BLOCK_UPPER
+        BLOCK_UPPER *= 2
+        BLOCK_LIMIT = BLOCK_UPPER

 
 
     # collecting statistics
 
 
     # collecting statistics


@@ -305,11 +370,11 @@ if __name__ == '__main__':
             elif wasbulked:
                 debulked.append(k)
     for i in bl.blacklist:
             elif wasbulked:
                 debulked.append(k)
     for i in bl.blacklist:

-        fd.write("%s ban\n" % k)
+        fd.write("%s ban\n" % i)

     fd.close()
 
     # TODO write logs (need to collect some statistics)
     fd.close()
 
     # TODO write logs (need to collect some statistics)

-    logstr = datetime.now().strftime('%Y-%m-%d %H:%M') + ' %s %s\n'
+    logstr = datetime.now().strftime('%d/%b/%Y:%H:%M:%S') + ' %s %s\n'

     fd = open(LOGFILE, 'a')
     if unblocked:
         fd.write(logstr % ('unblocked:', ', '.join(unblocked)))
     fd = open(LOGFILE, 'a')
     if unblocked:
         fd.write(logstr % ('unblocked:', ', '.join(unblocked)))


@@ -323,4 +388,7 @@ if __name__ == '__main__':
         fd.write(logstr % (' ua block:', ', '.join(uablocked)))
     if blocked:
         fd.write(logstr % ('new block:', ', '.join(blocked)))
         fd.write(logstr % (' ua block:', ', '.join(uablocked)))
     if blocked:
         fd.write(logstr % ('new block:', ', '.join(blocked)))

+    for k,v in stats.items():
+        if v.ignores_warnings() and k not in notlogged and ':' not in k:
+            fd.write(logstr % ('Warning ignored:', k))

     fd.close()
     fd.close()