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/*
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* Copyright (C) 2001 Ross Combs (rocombs@cs.nmsu.edu)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "common/setup_before.h"
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#ifdef HAVE_STDDEF_H
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# include <stddef.h>
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#else
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# ifndef NULL
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# define NULL ((void *)0)
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# endif
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#endif
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#ifdef STDC_HEADERS
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# include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#else
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# ifdef HAVE_STRINGS_H
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# include <strings.h>
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# endif
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# ifdef HAVE_MEMORY_H
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# include <memory.h>
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# endif
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#endif
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#include "compat/strdup.h"
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#include <ctype.h>
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#include "common/packet.h"
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#include "common/tag.h"
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#include "message.h"
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#include "common/eventlog.h"
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#include "command.h"
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#include "account.h"
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#include "account_wrap.h"
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#include "connection.h"
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#include "channel.h"
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#include "common/queue.h"
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#include "common/bnethash.h"
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#include "common/bnethashconv.h"
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#include "common/bn_type.h"
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#include "common/field_sizes.h"
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#include "common/list.h"
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#include "common/xalloc.h"
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#include "handle_telnet.h"
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#include "common/setup_after.h"
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extern int handle_telnet_packet(t_connection * c, t_packet const * const packet)
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{
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t_packet * rpacket;
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if (!c)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] got NULL connection",conn_get_socket(c));
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return -1;
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}
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if (!packet)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] got NULL packet",conn_get_socket(c));
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return -1;
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}
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if (packet_get_class(packet)!=packet_class_raw)
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] got bad packet (class %d)",conn_get_socket(c),(int)packet_get_class(packet));
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return -1;
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}
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{
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char const * const linestr=packet_get_str_const(packet,0,MAX_MESSAGE_LEN);
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if (packet_get_size(packet)<2) /* empty line */
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return 0;
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if (!linestr)
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{
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eventlog(eventlog_level_warn,__FUNCTION__,"[%d] line too long",conn_get_socket(c));
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return 0;
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}
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switch (conn_get_state(c))
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{
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case conn_state_connected:
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conn_add_flags(c,MF_PLUG);
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conn_set_clienttag(c,CLIENTTAG_BNCHATBOT_UINT);
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{
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char const * temp=linestr;
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if (temp[0]=='\004') /* FIXME: no echo, ignore for now (we always do no echo) */
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temp = &temp[1];
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if (temp[0]=='\0') /* empty line */
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{
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conn_set_state(c,conn_state_bot_username); /* don't look for ^D or reset tag and flags */
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break;
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}
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conn_set_state(c,conn_state_bot_password);
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if (conn_set_loggeduser(c,temp)<0)
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not set username to \"%s\"",conn_get_socket(c),temp);
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{
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char const * const msg="\r\nPassword: ";
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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#if 0 /* don't echo */
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packet_append_ntstring(rpacket,conn_get_loggeduser(c));
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#endif
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packet_append_ntstring(rpacket,msg);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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}
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}
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break;
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case conn_state_bot_username:
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conn_set_state(c,conn_state_bot_password);
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if (conn_set_loggeduser(c,linestr)<0)
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not set username to \"%s\"",conn_get_socket(c),linestr);
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{
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char const * const temp="\r\nPassword: ";
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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#if 0 /* don't echo */
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packet_append_ntstring(rpacket,linestr);
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#endif
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packet_append_ntstring(rpacket,temp);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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}
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break;
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case conn_state_bot_password:
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{
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char const * const tempa="\r\nLogin failed.\r\n\r\nUsername: ";
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char const * const tempb="\r\nAccount has no bot access.\r\n\r\nUsername: ";
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char const * const loggeduser=conn_get_loggeduser(c);
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t_account * account;
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char const * oldstrhash1;
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t_hash trypasshash1;
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t_hash oldpasshash1;
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char * testpass;
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if (!loggeduser) /* error earlier in login */
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{
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/* no log message... */
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempa);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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if (connlist_find_connection_by_accountname(loggeduser))
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (already logged in)",conn_get_socket(c),loggeduser);
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempa);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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if (!(account = accountlist_find_account(loggeduser)))
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (bad account)",conn_get_socket(c),loggeduser);
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempa);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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if ((oldstrhash1 = account_get_pass(account)))
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{
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if (hash_set_str(&oldpasshash1,oldstrhash1)<0)
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (corrupted passhash1?)",conn_get_socket(c),account_get_name(account));
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempa);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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testpass = xstrdup(linestr);
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{
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unsigned int i;
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for (i=0; i<strlen(testpass); i++)
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if (isupper((int)testpass[i]))
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testpass[i] = tolower((int)testpass[i]);
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}
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if (bnet_hash(&trypasshash1,strlen(testpass),testpass)<0) /* FIXME: force to lowercase */
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (unable to hash password)",conn_get_socket(c),account_get_name(account));
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xfree(testpass);
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempa);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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xfree(testpass);
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if (hash_eq(trypasshash1,oldpasshash1)!=1)
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (wrong password)",conn_get_socket(c),account_get_name(account));
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempa);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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if (account_get_auth_botlogin(account)!=1) /* default to false */
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (no bot access)",conn_get_socket(c),account_get_name(account));
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempb);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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else if (account_get_auth_lock(account)==1) /* default to false */
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{
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] bot login for \"%s\" refused (this account is locked)",conn_get_socket(c),account_get_name(account));
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conn_set_state(c,conn_state_bot_username);
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if (!(rpacket = packet_create(packet_class_raw)))
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{
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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break;
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}
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packet_append_ntstring(rpacket,tempb);
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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break;
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}
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] \"%s\" bot logged in (correct password)",conn_get_socket(c),account_get_name(account));
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}
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else
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eventlog(eventlog_level_info,__FUNCTION__,"[%d] \"%s\" bot logged in (no password)",conn_get_socket(c),account_get_name(account));
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if (!(rpacket = packet_create(packet_class_raw))) /* if we got this far, let them log in even if this fails */
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] could not create rpacket",conn_get_socket(c));
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else
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{
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packet_append_ntstring(rpacket,"\r\n");
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conn_push_outqueue(c,rpacket);
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packet_del_ref(rpacket);
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}
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message_send_text(c,message_type_uniqueid,c,account_get_name(account));
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conn_login(c,account,loggeduser);
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if (conn_set_channel(c,CHANNEL_NAME_CHAT)<0)
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conn_set_channel(c,CHANNEL_NAME_BANNED); /* should not fail */
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}
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break;
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case conn_state_loggedin:
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{
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t_channel const * channel;
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conn_set_idletime(c);
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if ((channel = conn_get_channel(c)))
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channel_message_log(channel,c,1,linestr);
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/* we don't log game commands currently */
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if (linestr[0]=='/')
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handle_command(c,linestr);
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else
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if (channel && !conn_quota_exceeded(c,linestr))
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channel_message_send(channel,message_type_talk,c,linestr);
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/* else discard */
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}
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break;
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default:
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eventlog(eventlog_level_error,__FUNCTION__,"[%d] unknown telnet connection state %d",conn_get_socket(c),(int)conn_get_state(c));
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}
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}
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return 0;
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}
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