server/ext/login.ext

#! perl # mandatory depends=highscore

# login handling

use Fcntl;
use Coro::AIO;
use Deliantra::Util ();

CONF MAX_DISCONNECT_TIME = 3600;

our $VALID_LOGIN = qr<^[a-zA-Z0-9][a-zA-Z0-9\-_]{2,19}\z>;
our %LOGIN_LOCK;

# HACK: remove when done
sub cf::client::send_drawinfo {
   my ($self, $text, $flags) = @_;

   utf8::encode $text;
   $self->send_packet (sprintf "msg %d log %s", $flags || cf::NDI_BLACK, $text);
}

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

   $ns->query ($flags, $text, Coro::rouse_cb);
   Coro::rouse_wait
}

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

   my $age = time - $mtime;
   my $level = $pl->ob->level;

   ($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
}

# return a guard object for a lock on the given username, if available
sub login_guard {
   my ($user) = @_;

   exists $LOGIN_LOCK{$user}
      and return undef;

   cf::player::find_active $user
      and return undef;

   undef $LOGIN_LOCK{$user};
   Guard::guard { delete $LOGIN_LOCK{$user} }
}

sub safe_spot($) {
   my ($pl) = @_;
   
   my $ob = $pl->ob;

   my $m = $ob->map
      or return;
   my $x = $ob->x;
   my $y = $ob->y;

   # never happens normally, but helps when shell users make mistakes
   $m->linkable
      or return 1;

   scalar grep $_->type == cf::SAVEBED, $m->at ($x, $y)
}

sub enter_map {
   my ($pl) = @_;

   my $ob = $pl->ob;

   my ($map, $x, $y)
      = $ob->{_link_pos}
        ? @{delete $ob->{_link_pos}}
        : ($pl->maplevel, $ob->x, $ob->y);

   $ob->enter_link;

   my $m = cf::map::find $map;
   my $time = delete $pl->{unclean_save};

   if ($time && $m) {
      if ($time < $m->{instantiate_time}) {
         # the map was reset in the meantime
         my $age = $cf::RUNTIME - $time;

         cf::info $ob->name, " map reset after logout, logout age $age (>= $MAX_DISCONNECT_TIME)\n";#d#

         if ($age >= $MAX_DISCONNECT_TIME) {
            $ob->message (
               "You didn't use a bed to reality to leave this realm, leaving your body in great danger. "
             . "Unfortunately, nobody was near to help you when the monsters arrived to eat you. "
             . "Maybe you can find comfort in the thought that your body was quite satisfying in taste... "
             . "H<You disconnected too long without having used a savebed.>",
               cf::NDI_RED
            );
            # kill them.
            # reminds me of the famous badness 10000 syndrome...
            $ob->stats->hp (-10000); #] if they survive this they deserved to live
            my $killer = cf::arch::get "killer_login"; $pl->killer ($killer); $killer->destroy;
         } else {
            ($map, $x, $y) = $pl->savebed;

            $ob->message (
               "You didn't use a bed to reality to leave this realm, leaving your body in great danger. "
             . "Fortunately, some friendly dwellers found you, checked your passport, and brought you to safety. "
             . "Better use a savebed next time, much worse things could have happened... "
             . "H<You disconnected without having used a savebed. When you do that for too long, you might die.>",
               cf::NDI_RED
            );
         }
      } else {
         $ob->message (
            "You didn't use a bed to reality to leave this realm. This is very dangerous, "
          . "as lots of things could happen when you leave by other means, such as cave-ins, "
          . "or monsters suddenly snapping your body. Better use a savebed next time. "
          . "H<Always apply a bed of reality to disconnect from the server.>",
            cf::NDI_RED
         );
      }
   }

   $ob->goto ($map, $x, $y);
}

sub encode_password($) {
   unpack "H*", Deliantra::Util::hash_pw $_[0]
}

sub compare_password($$) {
   my ($pass, $token) = @_;

   if ($token =~ /!!(.*)/) {
      return +(substr $pass, 0, 8) eq pack "H*", $1;
   } elsif ($token =~ /!(.*)/) {
      return $pass eq pack "H*", $1;
   } else {
      return $token eq crypt $pass, $token;
   }
}

# delete a player directory
sub nuke_playerdir {
   my ($user) = @_;

   my $lock = cf::lock_acquire "ext::login::nuke_playerdir";

   my $temp = "$PLAYERDIR/~$Coro::current~deleting~";
   aio_rename "$PLAYERDIR/$user", $temp;
   IO::AIO::aio_rmtree $temp;
}

sub login {
   my ($pl) = @_;

   # handle character creation, if neccessary
   # the rest of this function is character creation

   my $ns = $pl->ns;
   my $ob = $pl->ob;

   if ($pl->{chargen} eq "init") {
      $ob->goto ($pl->maplevel, $ob->x, $ob->y);

      # create the playerdir, if necessary, as chargen_race_done did it before
      # presumably because of unique maps
      aio_mkdir playerdir $pl, 0770;
      delete $pl->{deny_save}; # set by new
      $pl->save;

      $pl->{chargen} = "stats";
   }

   if ($pl->{chargen} eq "stats") {
      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;
         }

         Coro::Timer::sleep 0.05;
      }

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

      $pl->{chargen} = "race";
   }

   if ($pl->{chargen} eq "race") {
      while () {
         $ns->send_msg ("chargen-race-title", ucfirst $pl->title, -1);
         my $msg = $ob->msg;
         $msg =~ s/(?<=\S)\n(?=\S)/ /g;
         $ns->send_msg ("chargen-race-description", $msg, cf::NDI_BLUE);

         my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
                      "Now choose a character.\nPress any key to change outlook.\nPress `d' when you're pleased.\n";

         last if $res =~ /[dD]/;

         $pl->chargen_race_next;
         Coro::Timer::sleep 0.05;
      }

      $pl->chargen_race_done;
      $pl->{chargen} = "gender";
   }

   if ($pl->{chargen} eq "race") {
      while () {
         my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
                      "Now choose a gender.\nPress 'f' to become female, and 'm' to become male.\n";

         if ($res =~ /^[fF]/) {
            $pl->gender (1);
            last;
         } elsif ($res =~ /^[mM]/) {
            $pl->gender (0);
            last;
         }
         Coro::Timer::sleep 0.05;
      }
      $pl->{chargen} = "done";
   }

   $ns->state (cf::ST_PLAYING);

   if ($pl->{chargen} eq "done") {
      # XXX: Workaround for delayed client ext protocol handshake
      $pl->esrv_new_player;

      $pl->{chargen} = "done";
   }

   $ob->reply (undef, "Welcome to Deliantra!");

   if (0 < Coro::AIO::aio_load "$cf::CONFDIR/motd", my $motd) {
      $pl->ns->send_msg ("c/motd" => $motd, cf::NDI_CLEAR);
   }
}

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

   # just to make sure nothing is left over
   # normally, nothing is there.
   nuke_playerdir $user;

   my $pl = cf::player::new $user;
   $pl->password (unpack "H*", $hash);
   $pl->connect ($ns);

   $pl->{chargen} = "init";

   login $pl;
}

cf::client->attach (on_addme => sub {
   my ($ns) = @_;

   $ns->{addme}++ and return $ns->destroy;

   $ns->async (sub {
      $Coro::current->{desc} = "addme init";

      my ($user, $pass);

      $ns->send_packet ("addme_success");

      for (;;) {
         delete $ns->{login_guard};

         $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? (login names are case-sensitive)\n:";

            if ($user =~ $VALID_LOGIN) {
               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 20 characters in length.",
                  cf::NDI_RED
               );
            }
            Coro::Timer::sleep 0.4;
         }

         $Coro::current->{desc} = "addme($user)";

         $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
            );
            Coro::Timer::sleep 0.4;
         }

         $ns->{login_guard} = login_guard $user
            or do {
               $ns->send_drawinfo (
                  "That user is already logged in (or is logging in)."
                . "Chose another, or wait till the other session has ended.",
                  cf::NDI_RED
               );
               next;
            };

         # try to read the user file and check the password
         if (my $pl = cf::player::find $user) {
            aio_stat $pl->path and next;
            my $mtime = (stat _)[9];
            my $token = $pl->password;

            if ($cf::CFG{ext_login_nocheck} or compare_password $pass, $token) {
               # player exists and passwords match - we can proceed

               # password matches, wonderful
               my $pl = cf::player::find $user or next;
               $pl->connect ($ns);
               enter_map $pl;
               login $pl;
               return;
            } elsif (can_cleanup $pl, $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
               );

               (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 cf::player::path $user and next;
               $mtime == (stat _)[9] or next;

               $pl->quit_character;

               # fall through to creation
            } else {
               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;
            }
         } else {
            # unable to load the playerfile:
            # check whether the player dir exists, which means the file is corrupted or
            # something very similar.
            if (!aio_stat cf::player::playerdir $user) {
               $ns->send_drawinfo (
                  "Unable to retrieve this player. It might be a locked or broken account. "
                . "If this is your account, ask a dungeon master for assistance. "
                . "Otherwise choose a different login name.",
                  cf::NDI_RED
               );
               next;
            }
         }

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

         if ($pass2 ne $pass) {
            $ns->send_drawinfo (
               "The passwords do not match, please try again.",
               cf::NDI_RED
            );
            Coro::Timer::sleep 0.5;
            next;
         }

         last;
      }

      chargen $ns, $user, Deliantra::Util::hash_pw $pass;
   });
});

cf::client->attach (
   on_version => sub {
      my ($ns, $arg) = @_;

      # perl probably uses lrand48, which is not secure at all
      # maybe require linux and use /dev/urandom.
      $ns->{nonces} = [map { join "", map { chr rand 256 } 0..63  } 1..2];
      $ns->ext_msg (nonces => @{ $ns->{nonces} });
   },
);

cf::register_async_exticmd create_login => sub {
   my ($ns, $reply, $user, $pass) = @_;

   $ns->{addme}++ and return $ns->destroy;

   $ns->async (sub {
      my $fail = sub {
         $reply->(0, $_[0]);
         $ns->flush; # does not ensure that the data reaches the client - TODO
         # need to do this in another thread, as this one gets canceled
         Coro::async_pool {
            Coro::AnyEvent::sleep 0.1; # TODO, see above, extra hack
            $ns->destroy if $ns->valid;
         };
         Coro::schedule; # do the destroy, should not return
      };

      $user =~ $VALID_LOGIN
         or return $fail (
               "Your username contains illegal characters (only a-z, A-Z and 0-9 are allowed), "
             . "or is not between 3 and 20 characters in length."
            );

      $ns->{login_guard} = login_guard $user
         or return $fail->("User name '$user' is in use - try another login name.");

      cf::player::find $user
         and return $fail->("User name '$user' is already registered - choose another login name.");

      $reply->(1, "Account Created");

      chargen $ns, $user, $pass;
   });
};

cf::register_async_exticmd login => sub {
   my ($ns, $reply, $user, $hash) = @_;

   $ns->{addme}++ and return $ns->destroy;

   $ns->async (sub {
      $Coro::current->{desc} = "login($user)";

      my $fail = sub {
         $reply->(0, $_[0]);
         $ns->flush; # does not ensure that the data reaches the client - TODO
         # need to do this in another thread, as this one gets canceled
         Coro::async_pool {
            Coro::AnyEvent::sleep 0.1; # TODO, see above, extra hack
            $ns->destroy if $ns->valid;
         };
         Coro::schedule; # do the destroy, should not return
      };

      $ns->{login_guard} = login_guard $user
         or return $fail->("User '$user' is currently playing or logging in in another session. If that is your "
                           . "user name, make sure you are not running two clients. When in doubt, reboot.");

      # try to read the user file and check the password
      my $pl = cf::player::find $user
         or return $fail->("User '$user' does not exist - wrong spelling?");

      aio_stat $pl->path
         and return $ns->destroy;

      my $mtime = (stat _)[9];
      my $token = $pl->password;

      $token = $token =~ /^!/
               ? Deliantra::Util::hash_pw pack "H*", substr $token, 1
               : pack "H*", $token;

      $token = Deliantra::Util::auth_pw $token, $ns->{nonces}[0], $ns->{nonces}[1];

      $token eq $hash
         or $cf::CFG{ext_login_nocheck}
         or return $fail->("User exists, but the password doesn't match - check your spelling, NumLock/CapsLock etc.");
      
      # player exists and passwords match - we can proceed

      $reply->(1, "Success");

      $pl->connect ($ns);
      enter_map $pl;
      login $pl;
   });
};

cf::register_command password => sub {
   my ($pl, $arg) = @_;

   unless ($pl->flag (cf::FLAG_WIZ)) {
      $pl->message (
         "The password can currently only changed by a DM.",
         cf::NDI_UNIQUE | cf::NDI_REPLY);
      return;
   }

   $pl->message (#d#
      "Passwords cannot currently be changed.",#d#
      cf::NDI_UNIQUE | cf::NDI_REPLY);#d#
   return;#d#

   my (@args) = split /\s+/, $arg;
   my ($player, $new_pw) = @args;

   if ($pl->flag (cf::FLAG_WIZ) && $player eq '') {
      $pl->message (
         "Usage: password <player> [<new password>]",
         cf::NDI_UNIQUE | cf::NDI_REPLY);
      return;
   }

   if ($new_pw eq '') {
      $new_pw =
         join '',
            map { ('.', '/', 0..9, 'A'..'Z', 'a'..'z')[(cf::rndm 64)] }
               1..9;
   }

   cf::async {
      my $plc = cf::player::find $player;
      if ($plc) {
         $plc->password (encode_password $new_pw);
         $pl->message (
            "Ok, changed password of '$player' to '$new_pw'!",
            cf::NDI_UNIQUE | cf::NDI_RED | cf::NDI_REPLY);
      } else {
         $pl->message (
            "Fail! Couldn't set password for '$player', "
            . "he doesn't seem to exist!",
            cf::NDI_UNIQUE | cf::NDI_RED | cf::NDI_REPLY);
      }
   };
};

cf::register_command quit => sub {
   my ($ob, $arg) = @_;

   $ob->send_msg (undef,
                  "Quitting will delete your character PERMANENTLY: It will be gone forever and any progress will be lost. "
                  . "If you are sure you want to do this, then use the quit_character command instead of quit.",
                  cf::NDI_UNIQUE | cf::NDI_RED | cf::NDI_REPLY);
};

cf::register_command quit_character => sub {
   my ($ob, $arg) = @_;

   my $pl = $ob->contr;

   $pl->ns->query (cf::CS_QUERY_SINGLECHAR, "Do you want to PERMANENTLY delete your character and all associated data (y/n)?", sub {
      if ($_[0] !~ /^[yY]/) {
         $ob->send_msg (undef, "Ok, not not quitting then.", cf::NDI_UNIQUE | cf::NDI_RED | cf::NDI_REPLY);
      } else {
         $ob->send_msg (undef, "Ok, quitting, hope to see you again.", cf::NDI_UNIQUE | cf::NDI_RED | cf::NDI_REPLY);
         cf::async {
            $pl->quit_character;
         };
      }
   });
};

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

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

      my $pl = $ob->contr;

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

      cf::async {
         my $killer = cf::arch::get "killer_logout"; $pl->killer ($killer); $killer->destroy;
         ext::highscore::check $ob;

         $pl->save;

         $ob->send_msg ($cf::SAY_CHANNEL => "In the future, you will wake up here when you die.", cf::NDI_DEF | cf::NDI_REPLY);

         my $ns = $pl->ns
            or return;

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

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;
         $pl->{unclean_save} = $cf::RUNTIME
            unless safe_spot $pl;
      }
   },
);

Revision:	1.129
Committed:	Sun Nov 18 09:53:46 2012 UTC (11 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.128:	+40 -48 lines
Log Message:	better locking. maybe
#	Content
1	#! perl # mandatory depends=highscore
2
3	# login handling
4
5	use Fcntl;
6	use Coro::AIO;
7	use Deliantra::Util ();
8
9	CONF MAX_DISCONNECT_TIME = 3600;
10
11	our $VALID_LOGIN = qr<^[a-zA-Z0-9][a-zA-Z0-9\-_]{2,19}\z>;
12	our %LOGIN_LOCK;
13
14	# HACK: remove when done
15	sub cf::client::send_drawinfo {
16	my ($self, $text, $flags) = @_;
17
18	utf8::encode $text;
19	$self->send_packet (sprintf "msg %d log %s", $flags \|\| cf::NDI_BLACK, $text);
20	}
21
22	sub query {
23	my ($ns, $flags, $text) = @_;
24
25	$ns->query ($flags, $text, Coro::rouse_cb);
26	Coro::rouse_wait
27	}
28
29	sub can_cleanup {
30	my ($pl, $mtime) = @_;
31
32	my $age = time - $mtime;
33	my $level = $pl->ob->level;
34
35	($level <= 3 && $age > 7 * 86400) # 7 days for level 0..3
36	\|\| ($level <= 9 && $age > 90 * 86400) # 3 months for level 4..9
37	\|\| ($level <= 20 && $age > 180 * 86400) # 6 months for level 10..20
38	\|\| $age > 700 * 86400 # 2 years for everybody else
39	}
40
41	# return a guard object for a lock on the given username, if available
42	sub login_guard {
43	my ($user) = @_;
44
45	exists $LOGIN_LOCK{$user}
46	and return undef;
47
48	cf::player::find_active $user
49	and return undef;
50
51	undef $LOGIN_LOCK{$user};
52	Guard::guard { delete $LOGIN_LOCK{$user} }
53	}
54
55	sub safe_spot($) {
56	my ($pl) = @_;
57
58	my $ob = $pl->ob;
59
60	my $m = $ob->map
61	or return;
62	my $x = $ob->x;
63	my $y = $ob->y;
64
65	# never happens normally, but helps when shell users make mistakes
66	$m->linkable
67	or return 1;
68
69	scalar grep $_->type == cf::SAVEBED, $m->at ($x, $y)
70	}
71
72	sub enter_map {
73	my ($pl) = @_;
74
75	my $ob = $pl->ob;
76
77	my ($map, $x, $y)
78	= $ob->{_link_pos}
79	? @{delete $ob->{_link_pos}}
80	: ($pl->maplevel, $ob->x, $ob->y);
81
82	$ob->enter_link;
83
84	my $m = cf::map::find $map;
85	my $time = delete $pl->{unclean_save};
86
87	if ($time && $m) {
88	if ($time < $m->{instantiate_time}) {
89	# the map was reset in the meantime
90	my $age = $cf::RUNTIME - $time;
91
92	cf::info $ob->name, " map reset after logout, logout age $age (>= $MAX_DISCONNECT_TIME)\n";#d#
93
94	if ($age >= $MAX_DISCONNECT_TIME) {
95	$ob->message (
96	"You didn't use a bed to reality to leave this realm, leaving your body in great danger. "
97	. "Unfortunately, nobody was near to help you when the monsters arrived to eat you. "
98	. "Maybe you can find comfort in the thought that your body was quite satisfying in taste... "
99	. "H<You disconnected too long without having used a savebed.>",
100	cf::NDI_RED
101	);
102	# kill them.
103	# reminds me of the famous badness 10000 syndrome...
104	$ob->stats->hp (-10000); #] if they survive this they deserved to live
105	my $killer = cf::arch::get "killer_login"; $pl->killer ($killer); $killer->destroy;
106	} else {
107	($map, $x, $y) = $pl->savebed;
108
109	$ob->message (
110	"You didn't use a bed to reality to leave this realm, leaving your body in great danger. "
111	. "Fortunately, some friendly dwellers found you, checked your passport, and brought you to safety. "
112	. "Better use a savebed next time, much worse things could have happened... "
113	. "H<You disconnected without having used a savebed. When you do that for too long, you might die.>",
114	cf::NDI_RED
115	);
116	}
117	} else {
118	$ob->message (
119	"You didn't use a bed to reality to leave this realm. This is very dangerous, "
120	. "as lots of things could happen when you leave by other means, such as cave-ins, "
121	. "or monsters suddenly snapping your body. Better use a savebed next time. "
122	. "H<Always apply a bed of reality to disconnect from the server.>",
123	cf::NDI_RED
124	);
125	}
126	}
127
128	$ob->goto ($map, $x, $y);
129	}
130
131	sub encode_password($) {
132	unpack "H*", Deliantra::Util::hash_pw $_[0]
133	}
134
135	sub compare_password($$) {
136	my ($pass, $token) = @_;
137
138	if ($token =~ /!!(.*)/) {
139	return +(substr $pass, 0, 8) eq pack "H*", $1;
140	} elsif ($token =~ /!(.*)/) {
141	return $pass eq pack "H*", $1;
142	} else {
143	return $token eq crypt $pass, $token;
144	}
145	}
146
147	# delete a player directory
148	sub nuke_playerdir {
149	my ($user) = @_;
150
151	my $lock = cf::lock_acquire "ext::login::nuke_playerdir";
152
153	my $temp = "$PLAYERDIR/~$Coro::current~deleting~";
154	aio_rename "$PLAYERDIR/$user", $temp;
155	IO::AIO::aio_rmtree $temp;
156	}
157
158	sub login {
159	my ($pl) = @_;
160
161	# handle character creation, if neccessary
162	# the rest of this function is character creation
163
164	my $ns = $pl->ns;
165	my $ob = $pl->ob;
166
167	if ($pl->{chargen} eq "init") {
168	$ob->goto ($pl->maplevel, $ob->x, $ob->y);
169
170	# create the playerdir, if necessary, as chargen_race_done did it before
171	# presumably because of unique maps
172	aio_mkdir playerdir $pl, 0770;
173	delete $pl->{deny_save}; # set by new
174	$pl->save;
175
176	$pl->{chargen} = "stats";
177	}
178
179	if ($pl->{chargen} eq "stats") {
180	while () {
181	$ob->update_stats;
182	$pl->save_stats;
183
184	my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
185	"[y] to roll new stats [n] to use stats\n[1-7] [1-7] to swap stats.\nRoll again (y/n/1-7)?";
186
187	if ($res =~ /^[Nn]/) {
188	last;
189	} elsif ($res > 0 && $res <= 7) {
190	my $swap = query $ns, cf::CS_QUERY_SINGLECHAR, "Swap stat with (will not roll new stats) [1-7]?";
191
192	if ($swap > 0 && $swap <= 7) {
193	$ob->swap_stats ($res - 1, $swap - 1);
194	}
195	} else {
196	$ob->roll_stats;
197	}
198
199	Coro::Timer::sleep 0.05;
200	}
201
202	$ob->set_animation (2);
203	$ob->add_statbonus;
204
205	$pl->{chargen} = "race";
206	}
207
208	if ($pl->{chargen} eq "race") {
209	while () {
210	$ns->send_msg ("chargen-race-title", ucfirst $pl->title, -1);
211	my $msg = $ob->msg;
212	$msg =~ s/(?<=\S)\n(?=\S)/ /g;
213	$ns->send_msg ("chargen-race-description", $msg, cf::NDI_BLUE);
214
215	my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
216	"Now choose a character.\nPress any key to change outlook.\nPress `d' when you're pleased.\n";
217
218	last if $res =~ /[dD]/;
219
220	$pl->chargen_race_next;
221	Coro::Timer::sleep 0.05;
222	}
223
224	$pl->chargen_race_done;
225	$pl->{chargen} = "gender";
226	}
227
228	if ($pl->{chargen} eq "race") {
229	while () {
230	my $res = query $ns, cf::CS_QUERY_SINGLECHAR,
231	"Now choose a gender.\nPress 'f' to become female, and 'm' to become male.\n";
232
233	if ($res =~ /^[fF]/) {
234	$pl->gender (1);
235	last;
236	} elsif ($res =~ /^[mM]/) {
237	$pl->gender (0);
238	last;
239	}
240	Coro::Timer::sleep 0.05;
241	}
242	$pl->{chargen} = "done";
243	}
244
245	$ns->state (cf::ST_PLAYING);
246
247	if ($pl->{chargen} eq "done") {
248	# XXX: Workaround for delayed client ext protocol handshake
249	$pl->esrv_new_player;
250
251	$pl->{chargen} = "done";
252	}
253
254	$ob->reply (undef, "Welcome to Deliantra!");
255
256	if (0 < Coro::AIO::aio_load "$cf::CONFDIR/motd", my $motd) {
257	$pl->ns->send_msg ("c/motd" => $motd, cf::NDI_CLEAR);
258	}
259	}
260
261	sub chargen {
262	my ($ns, $user, $hash) = @_;
263
264	# just to make sure nothing is left over
265	# normally, nothing is there.
266	nuke_playerdir $user;
267
268	my $pl = cf::player::new $user;
269	$pl->password (unpack "H*", $hash);
270	$pl->connect ($ns);
271
272	$pl->{chargen} = "init";
273
274	login $pl;
275	}
276
277	cf::client->attach (on_addme => sub {
278	my ($ns) = @_;
279
280	$ns->{addme}++ and return $ns->destroy;
281
282	$ns->async (sub {
283	$Coro::current->{desc} = "addme init";
284
285	my ($user, $pass);
286
287	$ns->send_packet ("addme_success");
288
289	for (;;) {
290	delete $ns->{login_guard};
291
292	$ns->send_drawinfo (
293	"Please enter your username now. If you are a new user, "
294	. "make one up that describes your character best. "
295	. "Only letters and digits are allowed, though.",
296	cf::NDI_BLUE
297	);
298
299	# read username
300	while () {
301	$user = query $ns, 0, "What is your name? (login names are case-sensitive)\n:";
302
303	if ($user =~ $VALID_LOGIN) {
304	last;
305	} else {
306	$ns->send_drawinfo (
307	"Your username contains illegal characters "
308	. "(only a-z, A-Z and 0-9 are allowed), "
309	. "or is not between 3 and 20 characters in length.",
310	cf::NDI_RED
311	);
312	}
313	Coro::Timer::sleep 0.4;
314	}
315
316	$Coro::current->{desc} = "addme($user)";
317
318	$ns->send_drawinfo (
319	"Welcome $user, please enter your password now. "
320	. "New users should now choose a password. "
321	. "Anything your client lets you enter is fine.",
322	cf::NDI_BLUE
323	);
324
325	# read password
326	while () {
327	$pass = query $ns, cf::CS_QUERY_HIDEINPUT, "What is your password?\n:";
328	last if $pass =~ /.../;
329	$ns->send_drawinfo (
330	"Try to use at least three characters as your password please, "
331	. "that cannot be too much to ask for :)",
332	cf::NDI_RED
333	);
334	Coro::Timer::sleep 0.4;
335	}
336
337	$ns->{login_guard} = login_guard $user
338	or do {
339	$ns->send_drawinfo (
340	"That user is already logged in (or is logging in)."
341	. "Chose another, or wait till the other session has ended.",
342	cf::NDI_RED
343	);
344	next;
345	};
346
347	# try to read the user file and check the password
348	if (my $pl = cf::player::find $user) {
349	aio_stat $pl->path and next;
350	my $mtime = (stat _)[9];
351	my $token = $pl->password;
352
353	if ($cf::CFG{ext_login_nocheck} or compare_password $pass, $token) {
354	# player exists and passwords match - we can proceed
355
356	# password matches, wonderful
357	my $pl = cf::player::find $user or next;
358	$pl->connect ($ns);
359	enter_map $pl;
360	login $pl;
361	return;
362	} elsif (can_cleanup $pl, $mtime) {
363	Coro::Timer::sleep 1;
364
365	$ns->send_drawinfo (
366	"Player exists, but password does not match. If this is your account, "
367	. "please try again. If not, you can now decide to take over this account "
368	. "because it has not been in-use for some time.",
369	cf::NDI_RED
370	);
371
372	(query $ns, cf::CS_QUERY_SINGLECHAR, "Delete existing account and create a new one (Y/N)?") =~ /^[yY]/
373	or next;
374
375	# check if the file hasn't changed
376	aio_stat cf::player::path $user and next;
377	$mtime == (stat _)[9] or next;
378
379	$pl->quit_character;
380
381	# fall through to creation
382	} else {
383	Coro::Timer::sleep 1;
384
385	$ns->send_drawinfo (
386	"Wrong username or password. Please try again "
387	. "(check for Numlock and other semi-obvious error sources).",
388	cf::NDI_RED
389	);
390	next;
391	}
392	} else {
393	# unable to load the playerfile:
394	# check whether the player dir exists, which means the file is corrupted or
395	# something very similar.
396	if (!aio_stat cf::player::playerdir $user) {
397	$ns->send_drawinfo (
398	"Unable to retrieve this player. It might be a locked or broken account. "
399	. "If this is your account, ask a dungeon master for assistance. "
400	. "Otherwise choose a different login name.",
401	cf::NDI_RED
402	);
403	next;
404	}
405	}
406
407	my $pass2 = query $ns, cf::CS_QUERY_HIDEINPUT, "Please type your password again.";
408
409	if ($pass2 ne $pass) {
410	$ns->send_drawinfo (
411	"The passwords do not match, please try again.",
412	cf::NDI_RED
413	);
414	Coro::Timer::sleep 0.5;
415	next;
416	}
417
418	last;
419	}
420
421	chargen $ns, $user, Deliantra::Util::hash_pw $pass;
422	});
423	});
424
425	cf::client->attach (
426	on_version => sub {
427	my ($ns, $arg) = @_;
428
429	# perl probably uses lrand48, which is not secure at all
430	# maybe require linux and use /dev/urandom.
431	$ns->{nonces} = [map { join "", map { chr rand 256 } 0..63 } 1..2];
432	$ns->ext_msg (nonces => @{ $ns->{nonces} });
433	},
434	);
435
436	cf::register_async_exticmd create_login => sub {
437	my ($ns, $reply, $user, $pass) = @_;
438
439	$ns->{addme}++ and return $ns->destroy;
440
441	$ns->async (sub {
442	my $fail = sub {
443	$reply->(0, $_[0]);
444	$ns->flush; # does not ensure that the data reaches the client - TODO
445	# need to do this in another thread, as this one gets canceled
446	Coro::async_pool {
447	Coro::AnyEvent::sleep 0.1; # TODO, see above, extra hack
448	$ns->destroy if $ns->valid;
449	};
450	Coro::schedule; # do the destroy, should not return
451	};
452
453	$user =~ $VALID_LOGIN
454	or return $fail (
455	"Your username contains illegal characters (only a-z, A-Z and 0-9 are allowed), "
456	. "or is not between 3 and 20 characters in length."
457	);
458
459	$ns->{login_guard} = login_guard $user
460	or return $fail->("User name '$user' is in use - try another login name.");
461
462	cf::player::find $user
463	and return $fail->("User name '$user' is already registered - choose another login name.");
464
465	$reply->(1, "Account Created");
466
467	chargen $ns, $user, $pass;
468	});
469	};
470
471	cf::register_async_exticmd login => sub {
472	my ($ns, $reply, $user, $hash) = @_;
473
474	$ns->{addme}++ and return $ns->destroy;
475
476	$ns->async (sub {
477	$Coro::current->{desc} = "login($user)";
478
479	my $fail = sub {
480	$reply->(0, $_[0]);
481	$ns->flush; # does not ensure that the data reaches the client - TODO
482	# need to do this in another thread, as this one gets canceled
483	Coro::async_pool {
484	Coro::AnyEvent::sleep 0.1; # TODO, see above, extra hack
485	$ns->destroy if $ns->valid;
486	};
487	Coro::schedule; # do the destroy, should not return
488	};
489
490	$ns->{login_guard} = login_guard $user
491	or return $fail->("User '$user' is currently playing or logging in in another session. If that is your "
492	. "user name, make sure you are not running two clients. When in doubt, reboot.");
493
494	# try to read the user file and check the password
495	my $pl = cf::player::find $user
496	or return $fail->("User '$user' does not exist - wrong spelling?");
497
498	aio_stat $pl->path
499	and return $ns->destroy;
500
501	my $mtime = (stat _)[9];
502	my $token = $pl->password;
503
504	$token = $token =~ /^!/
505	? Deliantra::Util::hash_pw pack "H*", substr $token, 1
506	: pack "H*", $token;
507
508	$token = Deliantra::Util::auth_pw $token, $ns->{nonces}[0], $ns->{nonces}[1];
509
510	$token eq $hash
511	or $cf::CFG{ext_login_nocheck}
512	or return $fail->("User exists, but the password doesn't match - check your spelling, NumLock/CapsLock etc.");
513
514	# player exists and passwords match - we can proceed
515
516	$reply->(1, "Success");
517
518	$pl->connect ($ns);
519	enter_map $pl;
520	login $pl;
521	});
522	};
523
524	cf::register_command password => sub {
525	my ($pl, $arg) = @_;
526
527	unless ($pl->flag (cf::FLAG_WIZ)) {
528	$pl->message (
529	"The password can currently only changed by a DM.",
530	cf::NDI_UNIQUE \| cf::NDI_REPLY);
531	return;
532	}
533
534	$pl->message (#d#
535	"Passwords cannot currently be changed.",#d#
536	cf::NDI_UNIQUE \| cf::NDI_REPLY);#d#
537	return;#d#
538
539	my (@args) = split /\s+/, $arg;
540	my ($player, $new_pw) = @args;
541
542	if ($pl->flag (cf::FLAG_WIZ) && $player eq '') {
543	$pl->message (
544	"Usage: password <player> [<new password>]",
545	cf::NDI_UNIQUE \| cf::NDI_REPLY);
546	return;
547	}
548
549	if ($new_pw eq '') {
550	$new_pw =
551	join '',
552	map { ('.', '/', 0..9, 'A'..'Z', 'a'..'z')[(cf::rndm 64)] }
553	1..9;
554	}
555
556	cf::async {
557	my $plc = cf::player::find $player;
558	if ($plc) {
559	$plc->password (encode_password $new_pw);
560	$pl->message (
561	"Ok, changed password of '$player' to '$new_pw'!",
562	cf::NDI_UNIQUE \| cf::NDI_RED \| cf::NDI_REPLY);
563	} else {
564	$pl->message (
565	"Fail! Couldn't set password for '$player', "
566	. "he doesn't seem to exist!",
567	cf::NDI_UNIQUE \| cf::NDI_RED \| cf::NDI_REPLY);
568	}
569	};
570	};
571
572	cf::register_command quit => sub {
573	my ($ob, $arg) = @_;
574
575	$ob->send_msg (undef,
576	"Quitting will delete your character PERMANENTLY: It will be gone forever and any progress will be lost. "
577	. "If you are sure you want to do this, then use the quit_character command instead of quit.",
578	cf::NDI_UNIQUE \| cf::NDI_RED \| cf::NDI_REPLY);
579	};
580
581	cf::register_command quit_character => sub {
582	my ($ob, $arg) = @_;
583
584	my $pl = $ob->contr;
585
586	$pl->ns->query (cf::CS_QUERY_SINGLECHAR, "Do you want to PERMANENTLY delete your character and all associated data (y/n)?", sub {
587	if ($_[0] !~ /^[yY]/) {
588	$ob->send_msg (undef, "Ok, not not quitting then.", cf::NDI_UNIQUE \| cf::NDI_RED \| cf::NDI_REPLY);
589	} else {
590	$ob->send_msg (undef, "Ok, quitting, hope to see you again.", cf::NDI_UNIQUE \| cf::NDI_RED \| cf::NDI_REPLY);
591	cf::async {
592	$pl->quit_character;
593	};
594	}
595	});
596	};
597
598	cf::object->attach (
599	type => cf::SAVEBED,
600	on_apply => sub {
601	my ($bed, $ob) = @_;
602
603	return cf::override 0 unless $ob->type == cf::PLAYER;
604
605	my $pl = $ob->contr;
606
607	# update respawn position
608	$pl->savebed ($bed->map->path, $bed->x, $bed->y);
609
610	cf::async {
611	my $killer = cf::arch::get "killer_logout"; $pl->killer ($killer); $killer->destroy;
612	ext::highscore::check $ob;
613
614	$pl->save;
615
616	$ob->send_msg ($cf::SAY_CHANNEL => "In the future, you will wake up here when you die.", cf::NDI_DEF \| cf::NDI_REPLY);
617
618	my $ns = $pl->ns
619	or return;
620
621	$ns->query (cf::CS_QUERY_SINGLECHAR, "Do you want to continue playing (y/n)?", sub {
622	if ($_[0] !~ /^[yY]/) {
623	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1);
624	$pl->deactivate;
625	$pl->ns->destroy;
626	}
627	});
628	};
629	},
630	);
631
632	cf::player->attach (
633	on_login => sub {
634	my ($pl) = @_;
635	my $name = $pl->ob->name;
636
637	$_->ob->message ("$name has entered the game.", cf::NDI_DK_ORANGE \| cf::NDI_UNIQUE) for cf::player::list;
638	},
639	on_logout => sub {
640	my ($pl, $cleanly) = @_;
641	my $name = $pl->ob->name;
642
643	if ($cleanly) {
644	$_->ob->message ("$name left the game.", cf::NDI_DK_ORANGE \| cf::NDI_UNIQUE) for cf::player::list;
645	} else {
646	$_->ob->message ("$name uncerimoniously disconnected.", cf::NDI_DK_ORANGE \| cf::NDI_UNIQUE) for cf::player::list;
647	$pl->{unclean_save} = $cf::RUNTIME
648	unless safe_spot $pl;
649	}
650	},
651	);
652