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