server/ext/login.ext

#! perl

# login handling

use Fcntl;
use Coro::AIO;

my $PLAYERDIR = sprintf "%s/%s", cf::localdir, cf::playerdir;

# paranoia function to overwrite a string-in-place
sub nuke_str {
   substr $_[0], 0, (length $_[0]), "x" x length $_[0]
}

sub query {
   my ($ns, $flags, $text) = @_;

   my $current = $Coro::current;
   $ns->query ($flags, $text, sub { $current->ready; $current = $_[0]; });
   Coro::schedule while ref $current;

   $current
}

sub can_cleanup {
   my ($playerfile, $mtime) = @_;

   my $age = time - $mtime;
   my $level = $playerfile =~ /^level (\d+)$/m ? $1 : return;

   ($level <= 3 && $age > 7 * 86400)            # 7 days for level 0..3
   || ($level <= 9 && $age > 90 * 86400)        # 3 months for level 4..9
   || ($level <= 20 && $age > 180 * 86400)      # 6 months for level 10..20
   || $age > 700 * 86400                        # 2 years for everybody else
}

sub check_playing {
   my ($ns, $user) = @_;

   return unless cf::player::find $user;

   $ns->send_drawinfo (
      "That player is already logged in on this server. "
    . "If you want to create a new player, choose another name. "
    . "If you are already a registered player, make sure nobody "
    . "else is using your account at this time. If you lost your conenction "
    . "then the server will likely timeout within a minute. If you still "
    . "cannot log-in after a minute, you are still logged in. Make sure "
    . "you do not have another client running. If you use windows, reboot, "
    . "this will fix anything.",
      cf::NDI_RED
   );

   1
}

# delete a player directory, be non-blocking AND synchronous...
# (thats hard, so we crap out and fork).
sub nuke_playerdir {
   my ($user) = @_;

   aio_stat "$PLAYERDIR/$user";
   system "cd \Q$PLAYERDIR\E "
        . "&& mv \Q$user\E ~\Q$Coro::current\E~deleting~ 2>/dev/null "
        . "&& (rm -rf ~\Q$Coro::current\E~deleting~ &)";
}

sub addme {
   my ($ns) = @_;

   $ns->destroy if $ns->pl;

   $ns->async (sub {
      my ($user, $pass);

      $ns->send_packet ("addme_success");

      for (;;) {
         $ns->send_drawinfo (
            "Please enter your username now. If you are a new user, "
          . "make one up that describes your character best. "
          . "Only letters and digits are allowed, though.",
            cf::NDI_BLUE
         );

         # read username
         while () {
            $user = query $ns, 0, "What is your name?\n:";

            if ($cf::LOGIN_LOCK{$user}) {
               $ns->send_drawinfo (
                  "That username is currently used in another login session. "
                . "Chose another, or wait till the other session has ended.",
                  cf::NDI_RED
               );
            } elsif ($user =~ /^[a-zA-Z0-9][a-zA-Z0-9\-_]{2,17}$/) {
               last;
            } else {
               $ns->send_drawinfo (
                  "Your username contains illegal characters "
                . "(only a-z, A-Z and 0-9 are allowed), "
                . "or is not between 3 and 18 characters in length.",
                  cf::NDI_RED
               );
            }
         }

         check_playing $ns, $user and next;

         $ns->send_drawinfo (
            "Welcome $user, please enter your password now. "
          . "New users should now choose a password. "
          . "Anything your client lets you enter is fine.",
            cf::NDI_BLUE
         );

         # read password
         while () {
            $pass = query $ns, cf::CS_QUERY_HIDEINPUT, "What is your password?\n:";
            last if $pass =~ /.../;
            $ns->send_drawinfo (
               "Try to use at least three characters as your password please, "
             . "that cannot be too much to ask for :)",
               cf::NDI_RED
            );
         }

         my $dir    = "$PLAYERDIR/$user";
         my $plfile = "$dir/$user.pl";

         # lock this username for the remainder of this login session
         if ($cf::LOGIN_LOCK{$user}) {
            $ns->send_drawinfo (
               "That username is currently used in another login session. "
             . "Chose another, or wait till the other session has ended.",
               cf::NDI_RED
            );
            next;
         }
         local $cf::LOGIN_LOCK{$user} = 1;

         check_playing $ns, $user and next;

         # try to read the user file and check the password
         if (my $fh = aio_open $plfile, O_RDONLY, 0) {
            my $mtime = (stat $fh)[9];

            0 < aio_read $fh, 0, 16384, my $buf, 0 or next;
            $buf =~ /^password (\S+)$/m            or next;
            my $hash = $1;

            if ($hash eq crypt $pass, $hash) {
               nuke_str $pass;
               # password matches, wonderful
               my $pl = cf::player::load $plfile or next;
               $pl->enable_save (1);
               $pl->connect ($ns);
               last;
            } elsif (can_cleanup $buf, $mtime) {
               Coro::Timer::sleep 1;

               $ns->send_drawinfo (
                  "Player exists, but password does not match. If this is your account, "
                . "please try again. If not, you can now decide to take over this account "
                . "because it has not been in-use for some time.",
                  cf::NDI_RED
               );

               #TODO: nuke_str
               (query $ns, cf::CS_QUERY_SINGLECHAR, "Delete existing account and create a new one (Y/N)?") =~ /^[yY]/
                  or next;

               # check if the file hasn't changed
               aio_stat $plfile and next;
               $mtime == (stat _)[9] or next;

               nuke_playerdir $user;

               # fall through to creation
            } else {
               nuke_str $pass;

               Coro::Timer::sleep 1;

               $ns->send_drawinfo (
                  "Wrong username or password. Please try again "
                . "(check for Numlock and other semi-obvious error sources).",
                  cf::NDI_RED
               );
               next;
            }
         }

         # the rest of this function is character creation

         # just to make sure nothing is left over
         nuke_playerdir $user;

         my $pass2 = query $ns, cf::CS_QUERY_HIDEINPUT, "Please type your password again.";

         if ($pass2 ne $pass) {
            nuke_str $pass;
            nuke_str $pass2;
            $ns->send_drawinfo (
               "The passwords do not match, please try again.",
               cf::NDI_RED
            );
            next;
         }

         nuke_str $pass2;

         my $pl = cf::player::create;
         $pl->ob->name ($user);
         $pl->password (crypt $pass, join '', ('.', '/', 0..9, 'A'..'Z', 'a'..'z')[rand 64, rand 64]);
         nuke_str $pass;
         $pl->connect ($ns);

         my $ob = $pl->ob;

         while () {
            $ob->update_stats;
            $pl->save_stats;

            my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
                         "[y] to roll new stats [n] to use stats\n[1-7] [1-7] to swap stats.\nRoll again (y/n/1-7)?";

            if ($res =~ /^[Nn]/) {
               last;
            } elsif ($res > 0 && $res <= 7) {
               my $swap = query $ns, cf::CS_QUERY_SINGLECHAR, "Swap stat with (will not roll new stats) [1-7]?";

               if ($swap > 0 && $swap <= 7) {
                  $ob->swap_stats ($res - 1, $swap - 1);
               }
            } else {
               $ob->roll_stats;
            }
         }

         $ob->set_animation (2);
         $ob->add_statbonus;

         $ns->send_drawinfo ($ob->msg, cf::NDI_BLUE);
         $ns->send_packet (sprintf "query %d %s", cf::CS_QUERY_SINGLECHAR,
                      "Now choose a character.\nPress any key to change outlook.\nPress `d' when you're pleased.\n");

         $ns->state (cf::ST_CHANGE_CLASS);
         $pl->enable_save (1);#d# too early

         last;
      }
   });
}

cf::object->attach (
   type     => cf::SAVEBED,
   on_apply => sub {
      my ($bed, $ob) = @_;

      return cf::override 0 unless $ob->type == cf::PLAYER;

      # update respawn position
      $ob->contr->savebed ($bed->map->path, $bed->x, $bed->y);

      $ob->contr->killer ("left");
      $ob->check_score;

      $ob->reply (undef, "In the future, you will wake up here when you die.");
      $ob->contr->save (1);

      $ob->contr->ns->query (cf::CS_QUERY_SINGLECHAR, "Do you want to continue playing (y/n)?", sub {
         if ($_[0] !~ /^[yY]/) {
            $ob->contr->invoke (cf::EVENT_PLAYER_LOGOUT, 1);
            $ob->contr->ns->destroy;
         } else {
            $ob->contr->enable_save (1);
         }
      });
   },
);

cf::player->attach (
   on_login  => sub {
      my ($pl) = @_;
      my $name = $pl->ob->name;

      $_->ob->message ("$name has entered the game.", cf::NDI_DK_ORANGE | cf::NDI_UNIQUE) for cf::player::list;
   },
   on_logout => sub {
      my ($pl, $cleanly) = @_;
      my $name = $pl->ob->name;

      if ($cleanly) {
         $_->ob->message ("$name left the game.", cf::NDI_DK_ORANGE | cf::NDI_UNIQUE) for cf::player::list;
      } else {
         $_->ob->message ("$name uncerimoniously disconnected.", cf::NDI_DK_ORANGE | cf::NDI_UNIQUE) for cf::player::list;
      }
   },
);

cf::client->attach (
   on_addme => \&addme,
);

Revision:	1.10
Committed:	Fri Jan 5 20:04:02 2007 UTC (17 years, 4 months ago) by root
Branch:	MAIN
Changes since 1.9:	+1 -1 lines
Log Message:	fix the bug: on_destroy is obviously not being called on pooled coroutines, aslo use more sensible names than 'coro'
#	User	Rev	Content
1	root	1.1	#! perl
2
3			# login handling
4
5			use Fcntl;
6			use Coro::AIO;
7
8			my $PLAYERDIR = sprintf "%s/%s", cf::localdir, cf::playerdir;
9
10	root	1.9	# paranoia function to overwrite a string-in-place
11			sub nuke_str {
12			substr $_[0], 0, (length $_[0]), "x" x length $_[0]
13			}
14	root	1.1
15			sub query {
16			my ($ns, $flags, $text) = @_;
17
18			my $current = $Coro::current;
19			$ns->query ($flags, $text, sub { $current->ready; $current = $_[0]; });
20			Coro::schedule while ref $current;
21
22			$current
23			}
24
25			sub can_cleanup {
26			my ($playerfile, $mtime) = @_;
27
28			my $age = time - $mtime;
29			my $level = $playerfile =~ /^level (\d+)$/m ? $1 : return;
30
31			($level <= 3 && $age > 7 * 86400) # 7 days for level 0..3
32			\|\| ($level <= 9 && $age > 90 * 86400) # 3 months for level 4..9
33			\|\| ($level <= 20 && $age > 180 * 86400) # 6 months for level 10..20
34			\|\| $age > 700 * 86400 # 2 years for everybody else
35			}
36
37			sub check_playing {
38			my ($ns, $user) = @_;
39
40			return unless cf::player::find $user;
41
42			$ns->send_drawinfo (
43			"That player is already logged in on this server. "
44			. "If you want to create a new player, choose another name. "
45			. "If you are already a registered player, make sure nobody "
46			. "else is using your account at this time. If you lost your conenction "
47			. "then the server will likely timeout within a minute. If you still "
48			. "cannot log-in after a minute, you are still logged in. Make sure "
49			. "you do not have another client running. If you use windows, reboot, "
50			. "this will fix anything.",
51			cf::NDI_RED
52			);
53
54			1
55			}
56
57			# delete a player directory, be non-blocking AND synchronous...
58			# (thats hard, so we crap out and fork).
59			sub nuke_playerdir {
60			my ($user) = @_;
61
62			aio_stat "$PLAYERDIR/$user";
63			system "cd \Q$PLAYERDIR\E "
64			. "&& mv \Q$user\E ~\Q$Coro::current\E~deleting~ 2>/dev/null "
65			. "&& (rm -rf ~\Q$Coro::current\E~deleting~ &)";
66			}
67
68	root	1.8	sub addme {
69	root	1.1	my ($ns) = @_;
70
71			$ns->destroy if $ns->pl;
72
73	root	1.10	$ns->async (sub {
74	root	1.1	my ($user, $pass);
75
76			$ns->send_packet ("addme_success");
77
78			for (;;) {
79			$ns->send_drawinfo (
80			"Please enter your username now. If you are a new user, "
81			. "make one up that describes your character best. "
82			. "Only letters and digits are allowed, though.",
83			cf::NDI_BLUE
84			);
85
86			# read username
87			while () {
88			$user = query $ns, 0, "What is your name?\n:";
89	root	1.3
90			if ($cf::LOGIN_LOCK{$user}) {
91			$ns->send_drawinfo (
92			"That username is currently used in another login session. "
93			. "Chose another, or wait till the other session has ended.",
94			cf::NDI_RED
95			);
96			} elsif ($user =~ /^[a-zA-Z0-9][a-zA-Z0-9\-_]{2,17}$/) {
97			last;
98			} else {
99			$ns->send_drawinfo (
100			"Your username contains illegal characters "
101			. "(only a-z, A-Z and 0-9 are allowed), "
102			. "or is not between 3 and 18 characters in length.",
103			cf::NDI_RED
104			);
105			}
106	root	1.1	}
107
108			check_playing $ns, $user and next;
109
110			$ns->send_drawinfo (
111			"Welcome $user, please enter your password now. "
112			. "New users should now choose a password. "
113			. "Anything your client lets you enter is fine.",
114			cf::NDI_BLUE
115			);
116
117			# read password
118			while () {
119			$pass = query $ns, cf::CS_QUERY_HIDEINPUT, "What is your password?\n:";
120			last if $pass =~ /.../;
121			$ns->send_drawinfo (
122			"Try to use at least three characters as your password please, "
123			. "that cannot be too much to ask for :)",
124			cf::NDI_RED
125			);
126			}
127
128			my $dir = "$PLAYERDIR/$user";
129			my $plfile = "$dir/$user.pl";
130
131	root	1.3	# lock this username for the remainder of this login session
132			if ($cf::LOGIN_LOCK{$user}) {
133			$ns->send_drawinfo (
134			"That username is currently used in another login session. "
135			. "Chose another, or wait till the other session has ended.",
136			cf::NDI_RED
137			);
138			next;
139			}
140			local $cf::LOGIN_LOCK{$user} = 1;
141
142			check_playing $ns, $user and next;
143
144	root	1.1	# try to read the user file and check the password
145			if (my $fh = aio_open $plfile, O_RDONLY, 0) {
146			my $mtime = (stat $fh)[9];
147
148			0 < aio_read $fh, 0, 16384, my $buf, 0 or next;
149			$buf =~ /^password (\S+)$/m or next;
150			my $hash = $1;
151
152			if ($hash eq crypt $pass, $hash) {
153	root	1.9	nuke_str $pass;
154	root	1.1	# password matches, wonderful
155			my $pl = cf::player::load $plfile or next;
156			$pl->enable_save (1);
157			$pl->connect ($ns);
158			last;
159	root	1.3	} elsif (can_cleanup $buf, $mtime) {
160	root	1.1	Coro::Timer::sleep 1;
161
162			$ns->send_drawinfo (
163	root	1.3	"Player exists, but password does not match. If this is your account, "
164			. "please try again. If not, you can now decide to take over this account "
165	root	1.1	. "because it has not been in-use for some time.",
166			cf::NDI_RED
167			);
168
169	root	1.9	#TODO: nuke_str
170	root	1.1	(query $ns, cf::CS_QUERY_SINGLECHAR, "Delete existing account and create a new one (Y/N)?") =~ /^[yY]/
171			or next;
172
173			# check if the file hasn't changed
174	root	1.3	aio_stat $plfile and next;
175	root	1.1	$mtime == (stat _)[9] or next;
176
177			nuke_playerdir $user;
178
179			# fall through to creation
180			} else {
181	root	1.9	nuke_str $pass;
182
183	root	1.1	Coro::Timer::sleep 1;
184
185			$ns->send_drawinfo (
186			"Wrong username or password. Please try again "
187			. "(check for Numlock and other semi-obvious error sources).",
188			cf::NDI_RED
189			);
190			next;
191			}
192			}
193
194			# the rest of this function is character creation
195
196	root	1.3	# just to make sure nothing is left over
197	root	1.1	nuke_playerdir $user;
198
199	root	1.3	my $pass2 = query $ns, cf::CS_QUERY_HIDEINPUT, "Please type your password again.";
200
201			if ($pass2 ne $pass) {
202	root	1.9	nuke_str $pass;
203			nuke_str $pass2;
204	root	1.3	$ns->send_drawinfo (
205			"The passwords do not match, please try again.",
206			cf::NDI_RED
207			);
208			next;
209			}
210
211	root	1.9	nuke_str $pass2;
212
213	root	1.1	my $pl = cf::player::create;
214			$pl->ob->name ($user);
215			$pl->password (crypt $pass, join '', ('.', '/', 0..9, 'A'..'Z', 'a'..'z')[rand 64, rand 64]);
216	root	1.9	nuke_str $pass;
217	root	1.1	$pl->connect ($ns);
218	root	1.3
219	root	1.1	my $ob = $pl->ob;
220
221			while () {
222			$ob->update_stats;
223			$pl->save_stats;
224
225			my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
226			"[y] to roll new stats [n] to use stats\n[1-7] [1-7] to swap stats.\nRoll again (y/n/1-7)?";
227
228			if ($res =~ /^[Nn]/) {
229			last;
230			} elsif ($res > 0 && $res <= 7) {
231			my $swap = query $ns, cf::CS_QUERY_SINGLECHAR, "Swap stat with (will not roll new stats) [1-7]?";
232
233			if ($swap > 0 && $swap <= 7) {
234			$ob->swap_stats ($res - 1, $swap - 1);
235			}
236			} else {
237			$ob->roll_stats;
238			}
239			}
240
241			$ob->set_animation (2);
242			$ob->add_statbonus;
243
244			$ns->send_drawinfo ($ob->msg, cf::NDI_BLUE);
245			$ns->send_packet (sprintf "query %d %s", cf::CS_QUERY_SINGLECHAR,
246			"Now choose a character.\nPress any key to change outlook.\nPress `d' when you're pleased.\n");
247
248			$ns->state (cf::ST_CHANGE_CLASS);
249	root	1.2	$pl->enable_save (1);#d# too early
250	root	1.1
251			last;
252			}
253			});
254			}
255
256			cf::object->attach (
257			type => cf::SAVEBED,
258			on_apply => sub {
259			my ($bed, $ob) = @_;
260
261			return cf::override 0 unless $ob->type == cf::PLAYER;
262
263			# update respawn position
264			$ob->contr->savebed ($bed->map->path, $bed->x, $bed->y);
265
266	root	1.4	$ob->contr->killer ("left");
267	root	1.5	$ob->check_score;
268	root	1.1
269			$ob->reply (undef, "In the future, you will wake up here when you die.");
270	root	1.6	$ob->contr->save (1);
271	root	1.1
272	root	1.2	$ob->contr->ns->query (cf::CS_QUERY_SINGLECHAR, "Do you want to continue playing (y/n)?", sub {
273	root	1.6	if ($_[0] !~ /^[yY]/) {
274	root	1.8	$ob->contr->invoke (cf::EVENT_PLAYER_LOGOUT, 1);
275	root	1.6	$ob->contr->ns->destroy;
276	root	1.7	} else {
277			$ob->contr->enable_save (1);
278	root	1.6	}
279	root	1.1	});
280			},
281			);
282
283	root	1.8	cf::player->attach (
284			on_login => sub {
285			my ($pl) = @_;
286			my $name = $pl->ob->name;
287
288			$_->ob->message ("$name has entered the game.", cf::NDI_DK_ORANGE \| cf::NDI_UNIQUE) for cf::player::list;
289			},
290			on_logout => sub {
291			my ($pl, $cleanly) = @_;
292			my $name = $pl->ob->name;
293
294			if ($cleanly) {
295			$_->ob->message ("$name left the game.", cf::NDI_DK_ORANGE \| cf::NDI_UNIQUE) for cf::player::list;
296			} else {
297			$_->ob->message ("$name uncerimoniously disconnected.", cf::NDI_DK_ORANGE \| cf::NDI_UNIQUE) for cf::player::list;
298			}
299			},
300			);
301
302			cf::client->attach (
303			on_addme => \&addme,
304			);
305	root	1.1