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/*
Copyright (C) 2010 University of Minnesota. All rights reserved.
aper.cc - add bulk APER formated addresses to text databases
20090619.1532 s.a.hollatz <[email protected]>
NOTES
[a] Use:
aper list file
aper list < file
aper list
where 'list' is one of the following:
reply -- add to phish reply list
cleared -- add to phish cleared list used by reply
links -- add to phish links list
help -- simple command usage
Reads from stdin if file isn't given. In the third use above, stdin
is read until end-of-file is entered at the keyboard, usually 'ctrl-D'.
Sometimes this is useful: echo | aper list
The file format follows the "standard" APER form, one entry per line.
The file must have the same type of contents as the specified list.
[b] Compile: c++ -s -o aper aper.cc
[c] Warranty
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Copyright (C) 2010 University of Minnesota. All rights reserved.
*/
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <new>
#include <sstream>
#include <bitset>
#include <algorithm>
#include <cctype>
#include <limits>
#include <cstdlib>
#include <time.h>
#include <cstdio>
#include <unistd.h>
//=================================================================
// TWEEKABLES
// in case file names and address types change. probably no need to
// change things beyond this point unless you're fixing things.
const std::string replyfile = "phishing_reply_addresses";
const std::string replytypes = "ABCDE";
const std::string replyclearedfile = "phishing_cleared_addresses";
const std::string linksfile = "phishing_links";
//=================================================================
const char tokcomment = '#';
const char tokcsv = ',';
const char toksplit = ' ';
const char tokmail = '@';
const char tokdns = '.';
const char *tmpdir = "."; // dir for temp files
const char *tmpprefix = ".aper"; // prefix for temp files (5 char max)
enum errstate
{
EOK, // all ok
EUSE, // usage
EFILE, // cannot open file of new addresses
ERFILE, // cannot open file of reply addresses
ECFILE, // cannot open file of cleared addresses
ELFILE, // cannot open file of links
EXFILE, // cannot open temporary file
EXFILERM, // cannot remove temporary file
EATYPE, // incorrect address type
EADDRESS, // bad address format
EDATE, // bad date format
EAPERDB, // cannot load APER database
EUSERDB, // cannot load user database
EWAPERDB, // cannot write APER database
EMEM, // memory allocation problem
EUNKNOWN // we shouldn't need this, but...
};
enum trimspec
{
ENDS, // trim leading and trailing whitespace
ALL // nuke all whitespace
};
enum datamode { reply, links, cleared, nummodes };
std::bitset<nummodes> dbmode;
class APERnode
{
public:
APERnode( void );
APERnode( std::string date );
virtual ~APERnode( void ) {}
std::string date( void ) const { return ( _date ); }
void date( std::string d ) { _date = d; }
bool isvaliddate( std::string d ) const;
bool isnewer( std::string d ) const;
virtual void address( std::string a ) = 0;
virtual std::string address( void ) const = 0;
virtual bool isvalidaddress( std::string ) const = 0;
virtual void write( std::ostream &f ) = 0;
private:
std::string _date;
};
typedef std::set<char> AddrT;
class APERreply : public APERnode
{
public:
APERreply( void );
std::string address( void ) const { return ( _address ); }
void address( std::string a ) { _address = a; }
bool isvalidaddress( std::string a ) const;
std::string addrtype( void ) const;
void addrtype( std::string addrt );
bool isvalidaddrtype( std::string addrt ) const;
void clear( void ) { _iscleared = true; }
void unclear( void ) { _iscleared = false; }
bool iscleared( void ) const { return _iscleared; }
void write( std::ostream &f );
private:
std::string _address;
AddrT _addrt;
bool _iscleared;
};
class APERlinks : public APERnode
{
public:
APERlinks( void );
std::string address( void ) const { return ( _address ); }
void address( std::string a ) { _address = a; }
bool isvalidaddress( std::string address ) const;
std::string cleanup( std::string url );
void write( std::ostream &f );
private:
std::string _address;
};
class APERcleared : public APERnode
{
public:
APERcleared( void );
std::string address( void ) const { return ( _address ); }
void address( std::string a ) { _address = a; }
bool isvalidaddress( std::string address ) const;
void write( std::ostream &f );
private:
std::string _address;
};
typedef std::map<std::string, APERnode *> APERdb;
typedef std::vector<std::string> Comments;
typedef unsigned int linenum_type;
std::string trimspace( std::string &s, trimspec trim = ENDS );
std::string split( std::string s, char c = tokcsv );
std::string tolowercase( std::string s );
errstate errnotify( errstate err, std::string extrainfo = "", linenum_type line = 0 );
bool loadaperdb( void );
bool loadaperreply( std::istream *f );
bool loadapercleared( std::istream *f );
bool loadaperlinks( std::istream *f );
bool setapercleared( std::istream *f );
bool loaduserdb( std::string datafile );
bool loaduserreply( std::istream *f );
bool loadusercleared( std::istream *f );
bool loaduserlinks( std::istream *f );
bool writeaperdb( void );
APERdb aperdb;
Comments comments;
/////////////////////////////////////////////////////
// main //
/////////////////////////////////////////////////////
int main( int argc, char *argv[] )
{
std::string datafile;
while ( --argc > 0 )
{
std::string opt = *++argv;
if ( dbmode.none() )
{
if ( opt == "help" ) { return errnotify( EUSE ); }
if ( opt == "cleared" ) { dbmode.set( cleared ); continue; }
if ( opt == "links" ) { dbmode.set( links ); continue; }
if ( opt == "reply" ) { dbmode.set( reply ); continue; }
}
if ( dbmode.any() ) { datafile = opt; break; }
}
if ( dbmode.none() ) return ( errnotify( EUSE ) );
if ( ! loadaperdb() ) return ( errnotify( EAPERDB ) );
if ( ! loaduserdb( datafile ) ) return ( errnotify( EUSERDB ) );
if ( ! writeaperdb() ) return ( errnotify( EWAPERDB ) );
return ( EOK );
}
/////////////////////////////////////////////////////
// errnotify //
/////////////////////////////////////////////////////
errstate errnotify( errstate err, std::string extrainfo, linenum_type line )
{
std::string msg;
switch ( err )
{
case EUSE:
msg =
"Add bulk to Anti Phishing Email Reply list data\n" \
"use: aper list [file]\n" \
"\t'list' reply | cleared | links\n" \
"\t'file' data to add, read stdin if not specified";
break;
case EFILE: msg = "Cannot open new data file"; break;
case ERFILE: msg = "Cannot open reply address file"; break;
case ECFILE: msg = "Cannot open cleared address file"; break;
case EXFILE: msg = "Cannot open temporary file"; break;
case EXFILERM: msg = "Cannot remove temporary file"; break;
case EATYPE: msg = "Bad record type"; break;
case EADDRESS: msg = "Bad address format"; break;
case EDATE: msg = "Bad date format"; break;
case EAPERDB: msg = "Cannot load APER database"; break;
case EUSERDB: msg = "Cannot load user database"; break;
case EWAPERDB: msg = "Cannot write APER database"; break;
case ELFILE: msg = "Cannot open links file"; break;
case EUNKNOWN:
default: msg = "Unknown error state"; break;
}
if ( ! extrainfo.empty() )
msg += ": " + extrainfo;
if ( line > 0 )
std::cerr << "\tline " << line << ": ";
std::cerr << msg << std::endl;
return ( err );
}
/////////////////////////////////////////////////////
// loadaperdb //
/////////////////////////////////////////////////////
bool loadaperdb( void )
{
if ( dbmode.test( reply ) )
{
bool r(true), c(true);
std::ifstream ifsreply( replyfile.c_str() );
if ( ! ifsreply ) { errnotify( ERFILE, replyfile ); return ( false ); }
r = loadaperreply( &ifsreply );
ifsreply.close();
std::ifstream ifsclear( replyclearedfile.c_str() );
if ( ! ifsclear ) { errnotify( ECFILE, replyclearedfile ); return ( false ); }
c = setapercleared( &ifsclear );
ifsclear.close();
return ( r & c );
}
if ( dbmode.test( links ) )
{
std::ifstream ifs( linksfile.c_str() );
if ( ! ifs ) { errnotify( ELFILE, linksfile ); return ( false ); }
bool status = loadaperlinks( &ifs );
ifs.close();
return ( status );
}
if ( dbmode.test( cleared ) )
{
std::ifstream ifs( replyclearedfile.c_str() );
if ( ! ifs ) { errnotify( ECFILE, replyclearedfile ); return ( false ); }
bool status = loadapercleared( &ifs );
ifs.close();
return ( status );
}
return ( false );
}
/////////////////////////////////////////////////////
// loadaperreply //
/////////////////////////////////////////////////////
bool loadaperreply( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
trimspace( s, ENDS );
if ( s.empty() ) continue;
if ( s[0] == tokcomment )
comments.push_back( s );
else
break;
}
if ( f->good() )
{
do
{
if ( s[0] == tokcomment ) continue;
trimspace( s, ENDS );
if ( s.empty() ) continue;
std::string address, addrt, date;
std::istringstream iss( split( s ) );
iss >> address >> addrt >> date;
APERreply *node = new (std::nothrow) APERreply;
errstate err = ( node ) ? EOK : EMEM;
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvalidaddrtype( addrt ) )
err = errnotify( EATYPE, addrt, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
address = tolowercase( address );
node->address( address );
node->addrtype( addrt );
node->date( date );
if ( aperdb.count( address ) == 0 )
{
aperdb[ address ] = node;
}
else
{
delete node;
if ( ! aperdb[ address ]->isnewer( date ) )
aperdb[ address ]->date( date );
APERreply *p = dynamic_cast<APERreply *>( aperdb[ address ] );
if ( p->addrtype() != addrt ) p->addrtype( addrt );
}
}
while ( ++line, getline( *f, s ) );
}
return ( true );
}
/////////////////////////////////////////////////////
// setapercleared //
/////////////////////////////////////////////////////
// this is a little different from loadapercleared() in that this simply
// sets the cleared flag. this should be called after loadaperreply().
bool setapercleared( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
trimspace( s, ENDS );
if ( s.empty() ) continue;
if ( s[0] == tokcomment ) continue;
std::string address, date;
std::istringstream iss( split( s ) );
iss >> address >> date;
APERreply *node = new (std::nothrow) APERreply;
errstate err = ( node ) ? EOK : EMEM;
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
address = tolowercase( address );
node->address( address );
node->date( date );
if ( aperdb.count( address ) > 0 )
{
delete node;
if ( ! aperdb[ address ]->isnewer( date ) )
{
APERreply *p = dynamic_cast<APERreply *>( aperdb[ address ] );
p->clear();
p->date( date );
}
}
else
{
node->clear();
aperdb[ address ] = node;
}
}
return ( true );
}
/////////////////////////////////////////////////////
// loadapercleared //
/////////////////////////////////////////////////////
bool loadapercleared( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
trimspace( s, ENDS );
if ( s.empty() ) continue;
if ( s[0] == tokcomment )
comments.push_back( s );
else
break;
}
if ( f->good() )
{
do
{
if ( s[0] == tokcomment ) continue;
trimspace( s, ENDS );
if ( s.empty() ) continue;
std::string address, date;
std::istringstream iss( split( s ) );
iss >> address >> date;
APERcleared *node = new (std::nothrow) APERcleared;
errstate err = ( node ) ? EOK : EMEM;
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
address = tolowercase( address );
node->address( address );
node->date( date );
if ( aperdb.count( address ) == 0 )
{
aperdb[ address ] = node;
}
else
{
delete node;
if ( ! aperdb[ address ]->isnewer( date ) )
aperdb[ address ]->date( date );
}
}
while ( ++line, getline( *f, s ) );
}
return ( true );
}
/////////////////////////////////////////////////////
// loadaperlinks //
/////////////////////////////////////////////////////
bool loadaperlinks( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
trimspace( s, ENDS );
if ( s.empty() ) continue;
if ( s[0] == tokcomment )
comments.push_back( s );
else
break;
}
if ( f->good() )
{
do
{
if ( s[0] == tokcomment ) continue;
trimspace( s, ENDS );
if ( s.empty() ) continue;
std::string address, date;
std::istringstream iss( split( s ) );
iss >> address >> date;
APERlinks *node = new (std::nothrow) APERlinks;
errstate err = EOK;
if ( node )
{
address = node->cleanup( address );
}
else
{
err = EMEM;
}
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
node->address( address );
node->date( date );
if ( aperdb.count( address ) == 0 )
{
aperdb[ address ] = node;
}
else
{
delete node;
if ( ! aperdb[ address ]->isnewer( date ) )
aperdb[ address ]->date( date );
}
}
while ( ++line, getline( *f, s ) );
}
return ( true );
}
/////////////////////////////////////////////////////
// loaduserdb //
/////////////////////////////////////////////////////
bool loaduserdb( std::string datafile )
{
std::istream *f = &std::cin;
std::ifstream ifs;
if ( ! datafile.empty() )
{
ifs.open( datafile.c_str() );
if ( ! ifs )
{
errnotify( EFILE, datafile );
return ( false );
}
f = &ifs;
}
bool status = true;
if ( dbmode.test( reply ) ) status = loaduserreply( f );
if ( dbmode.test( links ) ) status = loaduserlinks( f );
if ( dbmode.test( cleared ) ) status = loadusercleared( f );
if ( *f != std::cin )
ifs.close();
else
f->ignore( std::numeric_limits<int>::max() );
return ( status );
}
/////////////////////////////////////////////////////
// loaduserreply //
/////////////////////////////////////////////////////
bool loaduserreply( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
trimspace( s, ALL );
if ( s.empty() ) continue;
if ( s[0] == tokcomment ) continue;
std::string address, addrt, date;
std::istringstream iss( split( s ) );
iss >> address >> addrt >> date;
APERreply *node = new (std::nothrow) APERreply;
errstate err = ( node ) ? EOK : EMEM;
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvalidaddrtype( addrt ) )
err = errnotify( EATYPE, addrt, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
address = tolowercase( address );
node->address( address );
node->addrtype( addrt );
node->date( date );
if ( aperdb.count( address ) == 0 )
{
aperdb[ address ] = node;
}
else
{
APERreply *p = dynamic_cast<APERreply *>( aperdb[ address ] );
if ( node->isnewer( p->date() ) )
{
if ( p->iscleared() ) p->unclear();
p->date( date );
}
if ( p->addrtype() != addrt ) p->addrtype( addrt );
delete node;
}
}
return ( true );
}
/////////////////////////////////////////////////////
// loaduserlinks //
/////////////////////////////////////////////////////
bool loaduserlinks( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
if ( s.empty() ) continue;
if ( s[0] == tokcomment ) continue;
std::string address, date;
std::istringstream iss( split( s ) );
iss >> address >> date;
APERlinks *node = new (std::nothrow) APERlinks;
errstate err = EOK;
if ( node )
{
address = node->cleanup( address );
}
else
{
err = EMEM;
}
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
node->address( address );
node->date( date );
if ( aperdb.count( address ) == 0 )
{
aperdb[ address ] = node;
}
else
{
delete node;
if ( ! aperdb[ address ]->isnewer( date ) )
aperdb[ address ]->date( date );
}
}
return ( true );
}
/////////////////////////////////////////////////////
// loadusercleared //
/////////////////////////////////////////////////////
bool loadusercleared( std::istream *f )
{
std::string s;
linenum_type line = 0;
while ( getline( *f, s ) )
{
++line;
trimspace( s, ENDS );
if ( s.empty() ) continue;
if ( s[0] == tokcomment ) continue;
std::string address, date;
std::istringstream iss( split( s ) );
iss >> address >> date;
APERcleared *node = new (std::nothrow) APERcleared;
errstate err = ( node ) ? EOK : EMEM;
if ( err == EOK && ! node->isvalidaddress( address ) )
err = errnotify( EADDRESS, address, line );
if ( err == EOK && ! node->isvaliddate( date ) )
err = errnotify( EDATE, date, line );
if ( err != EOK )
{
delete node;
return ( false );
}
address = tolowercase( address );
node->address( address );
node->date( date );
if ( aperdb.count( address ) == 0 )
{
aperdb[ address ] = node;
}
else
{
delete node;
if ( ! aperdb[ address ]->isnewer( date ) )
aperdb[ address ]->date( date );
}
}
return ( true );
}
/////////////////////////////////////////////////////
// writeaperdb //
/////////////////////////////////////////////////////
bool writeaperdb( void )
{
const char *tmpfile = tempnam( tmpdir, tmpprefix );
std::ofstream ofs( tmpfile );
if ( ! ofs )
{
errnotify( EXFILE, tmpfile );
return ( false );
}
for ( Comments::iterator itr = comments.begin(); itr != comments.end(); ++itr )
ofs << *itr << std::endl;
for ( APERdb::iterator itr = aperdb.begin(); itr != aperdb.end(); ++itr )
itr->second->write( ofs );
ofs.close();
std::string s;
if ( dbmode.test( reply ) ) s = replyfile;
if ( dbmode.test( links ) ) s = linksfile;
if ( dbmode.test( cleared ) ) s = replyclearedfile;
if ( rename( tmpfile, s.c_str() ) != 0 )
{
errnotify( EWAPERDB, s );
if ( unlink( tmpfile ) != 0 ) errnotify( EXFILERM, tmpfile );
return ( false );
}
return ( true );
}
/////////////////////////////////////////////////////
// APERnode::APERnode //
/////////////////////////////////////////////////////
APERnode::APERnode( std::string d ) : _date( d ) {}
APERnode::APERnode( void ) {}
/////////////////////////////////////////////////////
// APERnode::isvaliddate //
/////////////////////////////////////////////////////
// a valid date has the form YYYYMMDD consisting of all digits.
// valid formats are strings in the set (00000000, 99999999] and
// evalute to a valid date for the system.
//
// valid dates are between 20:45:52 UTC, December 13, 1901
// and 03:14:07 UTC, January 19, 2038 .
//
// there is a lot of overkill here but it helps in strange ways.
bool APERnode::isvaliddate( std::string date ) const
{
if ( date.empty() ) return ( false );
if ( date.size() != 8 ) return ( false );
std::string Y( date.substr( 0, 4 ) );
std::string M( date.substr( 4, 2 ) );
std::string D( date.substr( 6, 2 ) );
std::string digits = "0123456789";
if ( Y.find_first_not_of( digits ) != std::string::npos ) return ( false );
if ( M.find_first_not_of( digits ) != std::string::npos ) return ( false );
if ( D.find_first_not_of( digits ) != std::string::npos ) return ( false );
int y( atoi( Y.c_str() ) );
int m( atoi( M.c_str() ) );
int d( atoi( D.c_str() ) );
if ( y * m * d == 0 ) return ( false );
if ( m < 1 || m > 12 ) return ( false );
if ( d < 1 || d > 31 ) return ( false );
struct tm t;
t.tm_year = y - 1900;
t.tm_mon = m - 1;
t.tm_mday = d;
t.tm_hour = 0;
t.tm_min = 0;
t.tm_sec = 1;
t.tm_isdst = -1;
return ( mktime( &t ) != -1 );
}
/////////////////////////////////////////////////////
// APERnode::isnewer //
/////////////////////////////////////////////////////
// is the node newer than the date given?
bool APERnode::isnewer( std::string date ) const
{
if ( _date > date ) return ( true );
if ( _date == date || _date < date ) return ( false );
}
/////////////////////////////////////////////////////
// APERreply::APERreply //
/////////////////////////////////////////////////////
APERreply::APERreply( void ) : _iscleared( false ) {}
/////////////////////////////////////////////////////
// AEPRreply::write //
/////////////////////////////////////////////////////
void APERreply::write( std::ostream &f )
{
if ( ! iscleared() )
{
std::string s = address() + tokcsv + addrtype() + tokcsv + date();
if ( ! s.empty() ) f << s << std::endl;
}
}
/////////////////////////////////////////////////////
// APERreply::isvalidaddress //
/////////////////////////////////////////////////////
// lame check of email address format.
// basically, [email protected] ==> good format.
// there are no RFC-compliant checks (except one).
bool APERreply::isvalidaddress( std::string address ) const
{
if ( address.empty() ) return ( false );
std::string::size_type d = address.find( tokmail );
if ( d == std::string::npos ) return ( false );
if ( d > 0 && d < address.size() - 1 )
{
std::string host = address.substr( d );
d = host.find( tokdns );
if ( d == std::string::npos ) return ( false );
// try catching a typo...
if ( host.find( ".." ) != std::string::npos ) return ( false );
// assume host looks like @xxxx.yyyy with '@' at position 0.
// we don't want tokdns at 0 or 1 or at the end.