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import time
import datetime
import re
import mysql.connector
import getpass
import sys
MonthCodes=dict();
MonthCodes["Jan"]=1;
MonthCodes["Feb"]=2;
MonthCodes["Mar"]=3;
MonthCodes["Apr"]=4;
MonthCodes["May"]=5;
MonthCodes["Jun"]=6;
MonthCodes["Jul"]=7;
MonthCodes["Aug"]=8;
MonthCodes["Sep"]=9;
MonthCodes["Oct"]=10;
MonthCodes["Nov"]=11;
MonthCodes["Dec"]=12;
expressions=dict();
expressions["Connection closed by invalid user "]="password";
expressions["Disconnected from invalid user "]="password";
expressions["Connection closed by authenticating user "]="password";
expressions["Disconnected from authenticating user "]="password";
expressions["Disconnecting authenticating user "]="password";
expressions["Connection closed by "]="kex";
expressions["Disconnecting invalid user "]="password";
OrderedDataKeys=["PID","timestamp","duration","IP","port","user","attempts","type"];
noise=["/n",
": Too many authentication failures",
" [preauth]",
"Bye Bye"
];
def RemoveNoise(textline):
updatedtext=""+textline;
for n in noise:
updatedtext=updatedtext.replace(n,"");
replaceind=updatedtext.find(": Change of username or service not allowed");
if replaceind!=-1:
updatedtext=updatedtext[:replaceind];
return updatedtext;
class sshlogentry:
def __init__(self,ProcID):
self.timestampsList=[];
self.data=dict();
self.PID=ProcID;
self.data["timestamp"]=None;
self.data["IP"]=None;
self.data["port"]=None;
self.data["attempts"]=0;
self.data["user"]=None;
self.data["duration"]=None;
self.data["type"]=None;
self.isValid=True;
def VerifyData(self):
if len(self.timestampsList)==0:
self.isValid=False;
return False;
self.data["timestamp"]=min(self.timestampsList);
self.data["duration"]=max(self.timestampsList)-self.data["timestamp"];
self.data["PID"]=self.PID;
if self.data["user"]==None:
self.data["user"]="n.a";
for d in self.data:
self.isValid *= self.data[d]!=None;
return True;
#SQLstatement="INSERT INTO entries (PID, timestamp, duration, IPaddress, port, user, attempts) VALUES (%s, %s, %s, %s, %s, %s, %s)";
def OutputData(self,keyorder):
return tuple([self.data.get(datakey,"") for datakey in keyorder]);
#year is not explicitly written in logs
#might need to check the code behind auth.log
def FormatLogDate(DateString,ld_year):
ld_month=MonthCodes[DateString[:3]];
ld_day=int(DateString[4:6]);
ld_hour,ld_min,ld_sec=[int(ld_temp) for ld_temp in DateString[7:15].split(":")];
return datetime.datetime(ld_year,ld_month,ld_day,ld_hour,ld_min,ld_sec);
def ParseFile(filename,LowerTS,UpperTS,VerboseFeedback=True):
Entries=[];
Errors=[];
CurrentEntry=sshlogentry(None);
#
DataSource=open(filename,"r");
for ds_i,dsLine in enumerate(DataSource):
dsLine=dsLine.replace("\n","");
OpeningBracket=dsLine.index("[");
ClosingBracket=dsLine.index("]");
entryID=dsLine[OpeningBracket+1:ClosingBracket];
if entryID != CurrentEntry.PID:
CurrentEntry.VerifyData();
if CurrentEntry.isValid:
if LowerTS <= CurrentEntry.data["timestamp"] <=UpperTS:
Entries.append(CurrentEntry);
else:
Errors.append(CurrentEntry);
CurrentEntry=sshlogentry(entryID);
entryDate=dsLine[0:15];
entryDateFormatted=FormatLogDate(entryDate,2025);
entryTimestamp=int(entryDateFormatted.timestamp());
if VerboseFeedback:
print(f'{entryDateFormatted.year}-{entryDateFormatted.month}-{entryDateFormatted.day}: line #{ds_i}');
CurrentEntry.timestampsList.append(entryTimestamp);
#
dsLineParsable=RemoveNoise(dsLine[ClosingBracket+3:]);
CurrentEntry.data["attempts"]+=dsLineParsable.count("Failed password for");
for expression in expressions:
if expression in dsLineParsable and " port " in dsLineParsable:
entrySublist,entryPort=dsLineParsable.replace(expression,"").split(" port ");
CurrentEntry.data["port"]=int(entryPort);
IPmatch=re.search(r'(\d+)\.(\d+)\.(\d+)\.(\d+)',entrySublist);
if not IPmatch:
IPmatch=re.search(r'([a-f0-9:]+:+)+[a-f0-9]*(%\w+)*',entrySublist);
CurrentEntry.data["IP"]=IPmatch.group();
CurrentEntry.data["user"]=entrySublist.replace(" "+CurrentEntry.data["IP"],"").replace(" from","");
CurrentEntry.data["type"]=""+expressions[expression];
break;
DataSource.close();
return Entries,Errors;
def CreateFeedFile(EntryList,feedorder,FeedFilename="ssh-logins-feedfile",delim=";"):
feedfile=open(FeedFilename,"w");
for entryItem in EntryList:
feedline=delim.join([f'{ei}'for ei in entryItem.OutputData(feedorder)]);
feedfile.write(feedline+"\n");
feedfile.close();
def UpdateDatabase(ParsedEntriesList,keyorder, pword=None):
ParsedValuesList=[];
for pel in ParsedEntriesList:
ParsedValuesList.append(pel.OutputData(keyorder));
if pword==None:
SQLpassword=getpass.getpass("SQL user password: ");
else:
SQLpassword=pwd;
SQLDatabase=mysql.connector.connect(
host="localhost",
user="sshlogins",
password=SQLpassword,
database="sshlogs");
SQLcursor=SQLDatabase.cursor();
OrderedData=", ".join(keyorder);
SQLstatement="INSERT INTO entries (PID, timestamp, duration, IPaddress, port, user, attempts, type) VALUES (%s, %s, %s, %s, %s, %s, %s, %s)";
batchsize=100;
for batch in range(1+len(ParsedValuesList)//batchsize):
SQLcursor.executemany(SQLstatement,ParsedValuesList[batch*batchsize:(batch+1)*batchsize]);
SQLDatabase.commit();
print("batch ",batch," out of ",1+len(ParsedValuesList)//batchsize," inserted");
def CreateUncategorizedFile(UncategorizedList,fname="uncategorized-sshlogs.err",delim=";"):
uncat=open(fname,"a");
for err in UncategorizedList:
uncat.write(err+"\n");
uncat.close();
def ConvertBoundaryDates(LB,UB):
boundaryTimestamps=list();
#second date must be reduced by 1
#so it's a previous month
for bi,bdate in enumerate([LB,UB]):
yy,mm,dd=[int(v) for v in bdate.split("-")]
ts=datetime.datetime(yy,mm,dd).timestamp();
boundaryTimestamps.append(int(ts)-bi);
return boundaryTimestamps;
def PerformUpdate(LowerBoundsDate,UpperBoundsDate,RawData,dbpassword=None):
print("Performing full database update:");
print("Start...");
LowerBounds,UpperBounds=ConvertBoundaryDates(LowerBoundsDate,UpperBoundsDate);
updateEntries,updateErrors=ParseFile(RawData,LowerBounds,UpperBounds,True);
print("File parsed");
#CreateFeedFile(EntryList=updateEntries,feedorder=OrderedDataKeys,FeedFilename="ssh-logins-feedfile");
print("backup feedfile created");
UpdateDatabase(updateEntries,OrderedDataKeys,dbpassword);
print("Instances retrieved:",len(updateEntries));
print("Instances discarded:",len(updateErrors));
updateEntries,updateErrors=[],[]; #i think this will clear memory
'''
+-------------+-----------+
| COLUMN_NAME | DATA_TYPE |
+-------------+-----------+
| lp | int |
| PID | int |
| timestamp | int |
| duration | mediumint |
| IPaddress | varchar |
| port | varchar |
| user | varchar |
| attempts | smallint |
| type | varchar |
+-------------+-----------+
9 rows in set (0,01 sec)
'''
if __name__=="__main__":
PerformUpdate(sys.argv[1],sys.argv[2],sys.argv[3],sys.argv[4]);
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