bool sbbs_t::spy(uint i /* node_num */)
{
char ch;
char ansi_seq[32];
int ansi_len;
int in;
if(!i || i>MAX_NODES) {
bprintf("Invalid node number: %d\r\n",i);
return(false);
}
if(i==cfg.node_num) {
bprintf("Can't spy on yourself.\r\n");
return(false);
}
if(spy_socket[i-1]!=INVALID_SOCKET) {
bprintf("Node %d already being spied (%lx)\r\n",i,spy_socket[i-1]);
return(false);
}
bprintf("*** Synchronet Remote Spy on Node %d: Ctrl-C to Abort ***"
"\r\n\r\n",i);
spy_socket[i-1]=client_socket;
ansi_len=0;
while(online
&& client_socket!=INVALID_SOCKET
&& spy_socket[i-1]!=INVALID_SOCKET
&& !msgabort()) {
in=incom(1000);
if(in==NOINP) {
gettimeleft();
continue;
}
ch=in;
if(ch==ESC) {
if(!ansi_len) {
ansi_seq[ansi_len++]=ch;
continue;
}
ansi_len=0;
}
if(ansi_len && ansi_len<(int)sizeof(ansi_seq)-2) {
if(ansi_len==1) {
if(ch=='[') {
ansi_seq[ansi_len++]=ch;
continue;
}
ansi_len=0;
}
if(ch=='R') { /* throw-away cursor position report */
ansi_len=0;
continue;
}
ansi_seq[ansi_len++]=ch;
if(isalpha(ch)) {
RingBufWrite(node_inbuf[i-1],(uchar*)ansi_seq,ansi_len);
ansi_len=0;
}
continue;
}
if(ch<' ') {
lncntr=0; /* defeat pause */
spy_socket[i-1]=INVALID_SOCKET; /* disable spy output */
ch=handle_ctrlkey(ch,K_NONE);
spy_socket[i-1]=client_socket; /* enable spy output */
if(ch==0)
continue;
}
if(node_inbuf[i-1]!=NULL)
RingBufWrite(node_inbuf[i-1],(uchar*)&ch,1);
}
spy_socket[i-1]=INVALID_SOCKET;
return(true);
}
void sbbs_t::telnet_gate(char* destaddr, ulong mode, char* client_user_name, char* server_user_name, char* term_type)
{
char* p;
uchar buf[512];
int i;
int rd;
uint attempts;
ulong l;
bool gotline;
ushort port;
ulong ip_addr;
ulong save_console;
SOCKET remote_socket;
SOCKADDR_IN addr;
if(mode&TG_RLOGIN)
port=513;
else
port=IPPORT_TELNET;
p=strchr(destaddr,':');
if(p!=NULL) {
*p=0;
port=atoi(p+1);
}
ip_addr=resolve_ip(destaddr);
if(ip_addr==INADDR_NONE) {
lprintf(LOG_NOTICE,"!TELGATE Failed to resolve address: %s",destaddr);
bprintf("!Failed to resolve address: %s\r\n",destaddr);
return;
}
if((remote_socket = open_socket(SOCK_STREAM, client.protocol)) == INVALID_SOCKET) {
errormsg(WHERE,ERR_OPEN,"socket",0);
return;
}
memset(&addr,0,sizeof(addr));
addr.sin_addr.s_addr = htonl(startup->telnet_interface);
addr.sin_family = AF_INET;
if((i=bind(remote_socket, (struct sockaddr *) &addr, sizeof (addr)))!=0) {
lprintf(LOG_NOTICE,"!TELGATE ERROR %d (%d) binding to socket %d",i, ERROR_VALUE, remote_socket);
bprintf("!ERROR %d (%d) binding to socket\r\n",i, ERROR_VALUE);
close_socket(remote_socket);
return;
}
memset(&addr,0,sizeof(addr));
addr.sin_addr.s_addr = ip_addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
if((i=connect(remote_socket, (struct sockaddr *)&addr, sizeof(addr)))!=0) {
lprintf(LOG_NOTICE,"!TELGATE ERROR %d (%d) connecting to server: %s"
,i,ERROR_VALUE, destaddr);
bprintf("!ERROR %d (%d) connecting to server: %s\r\n"
,i,ERROR_VALUE, destaddr);
close_socket(remote_socket);
return;
}
l=1;
if((i = ioctlsocket(remote_socket, FIONBIO, &l))!=0) {
lprintf(LOG_NOTICE,"!TELGATE ERROR %d (%d) disabling socket blocking"
,i, ERROR_VALUE);
close_socket(remote_socket);
return;
}
lprintf(LOG_INFO,"Node %d %s gate to %s port %u on socket %d"
,cfg.node_num
,mode&TG_RLOGIN ? "RLogin" : "Telnet"
,destaddr,port,remote_socket);
if(!(mode&TG_CTRLKEYS))
console|=CON_RAW_IN;
if(mode&TG_RLOGIN) {
p=(char*)buf;
*(p++)=0;
p+=sprintf(p,"%s",client_user_name==NULL ? useron.alias : client_user_name);
p++; // Add NULL
p+=sprintf(p,"%s",server_user_name==NULL ? useron.name : server_user_name);
p++; // Add NULL
if(term_type!=NULL)
p+=sprintf(p,"%s",term_type);
else
p+=sprintf(p,"%s/%u",terminal, cur_rate);
p++; // Add NULL
l=p-(char*)buf;
sendsocket(remote_socket,(char*)buf,l);
mode|=TG_NOLF; /* Send LF (to remote host) when Telnet client sends CRLF (when not in binary mode) */
}
/* This is required for gating to Unix telnetd */
if(mode&TG_NOTERMTYPE)
request_telnet_opt(TELNET_DONT,TELNET_TERM_TYPE, 3000); // Re-negotiation of terminal type
/* Text/NVT mode by default */
request_telnet_opt(TELNET_DONT,TELNET_BINARY_TX, 3000);
if(!(telnet_mode&TELNET_MODE_OFF) && (mode&TG_PASSTHRU))
telnet_mode|=TELNET_MODE_GATE; // Pass-through telnet commands
while(online) {
if(!(mode&TG_NOCHKTIME))
gettimeleft();
rd=RingBufRead(&inbuf,buf,sizeof(buf));
if(rd) {
#if 0
if(memchr(buf,TELNET_IAC,rd)) {
char dump[2048];
dump[0];
p=dump;
for(int i=0;i<rd;i++)
p+=sprintf(p,"%u ",buf[i]);
lprintf(LOG_DEBUG,"Node %d Telnet cmd from client: %s", cfg.node_num, dump);
}
#endif
if(telnet_remote_option[TELNET_BINARY_TX]!=TELNET_WILL) {
if(*buf==0x1d) { // ^]
save_console=console;
console&=~CON_RAW_IN; // Allow Ctrl-U/Ctrl-P
CRLF;
while(online) {
SYNC;
mnemonics("\1n\r\n\1h\1bTelnet Gate: \1y~D\1wisconnect, "
"\1y~E\1wcho toggle, \1y~L\1wist Users, \1y~P\1wrivate message, "
"\1y~Q\1wuit: ");
switch(getkeys("DELPQ",0)) {
case 'D':
closesocket(remote_socket);
break;
case 'E':
mode^=TG_ECHO;
bprintf(text[EchoIsNow]
,mode&TG_ECHO
? text[ON]:text[OFF]);
continue;
case 'L':
whos_online(true);
continue;
case 'P':
nodemsg();
continue;
}
break;
}
attr(LIGHTGRAY);
console=save_console;
}
else if(*buf<' ' && (mode&TG_CTRLKEYS))
handle_ctrlkey(*buf, K_NONE);
gotline=false;
if((mode&TG_LINEMODE) && buf[0]!='\r') {
ungetkey(buf[0]);
l=K_CHAT;
if(!(mode&TG_ECHO))
l|=K_NOECHO;
rd=getstr((char*)buf,sizeof(buf)-1,l);
if(!rd)
continue;
strcat((char*)buf,crlf);
rd+=2;
gotline=true;
}
if((mode&TG_CRLF) && buf[rd-1]=='\r')
buf[rd++]='\n';
else if((mode&TG_NOLF) && buf[rd-1]=='\n')
rd--;
if(!gotline && (mode&TG_ECHO) && rd) {
RingBufWrite(&outbuf,buf,rd);
}
} /* Not Telnet Binary mode */
if(rd > 0) {
for(attempts=0;attempts<60 && online; attempts++) /* added retry loop here, Jan-20-2003 */
{
if((i=sendsocket(remote_socket,(char*)buf,rd))>=0)
break;
if(ERROR_VALUE!=EWOULDBLOCK)
break;
mswait(500);
}
if(i<0) {
lprintf(LOG_NOTICE,"!TELGATE ERROR %d sending on socket %d",ERROR_VALUE,remote_socket);
break;
}
}
}
rd=recv(remote_socket,(char*)buf,sizeof(buf),0);
if(rd<0) {
if(ERROR_VALUE==EWOULDBLOCK) {
if(mode&TG_NODESYNC) {
SYNC;
} else {
// Check if the node has been interrupted
getnodedat(cfg.node_num,&thisnode,0);
if(thisnode.misc&NODE_INTR)
break;
}
YIELD();
continue;
}
lprintf(LOG_NOTICE,"!TELGATE ERROR %d receiving on socket %d",ERROR_VALUE,remote_socket);
break;
}
if(!rd) {
lprintf(LOG_INFO,"Node %d Telnet gate disconnected",cfg.node_num);
break;
}
#if 0
if(memchr(buf,TELNET_IAC,rd)) {
char dump[2048];
dump[0];
p=dump;
for(int i=0;i<rd;i++)
p+=sprintf(p,"%u ",buf[i]);
lprintf(LOG_DEBUG,"Node %d Telnet cmd from server: %s", cfg.node_num, dump);
}
#endif
RingBufWrite(&outbuf,buf,rd);
}
console&=~CON_RAW_IN;
telnet_mode&=~TELNET_MODE_GATE;
/* Disable Telnet Terminal Echo */
request_telnet_opt(TELNET_WILL,TELNET_ECHO);
close_socket(remote_socket);
lprintf(LOG_INFO,"Node %d Telnet gate to %s finished",cfg.node_num,destaddr);
}
