mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-07-01 03:22:48 -05:00
Run entire source base through GNU indent to tidy up the varying
coding styles of the various contributors! Woohoo! [originally from svn r1098]
This commit is contained in:
Simon Tatham
550
telnet.c
550
telnet.c
@ -13,73 +13,73 @@
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static Socket s = NULL;
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#define IAC 255 /* interpret as command: */
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#define DONT 254 /* you are not to use option */
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#define DO 253 /* please, you use option */
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#define WONT 252 /* I won't use option */
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#define WILL 251 /* I will use option */
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#define SB 250 /* interpret as subnegotiation */
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#define SE 240 /* end sub negotiation */
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#define IAC 255 /* interpret as command: */
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#define DONT 254 /* you are not to use option */
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#define DO 253 /* please, you use option */
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#define WONT 252 /* I won't use option */
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#define WILL 251 /* I will use option */
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#define SB 250 /* interpret as subnegotiation */
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#define SE 240 /* end sub negotiation */
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#define GA 249 /* you may reverse the line */
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#define EL 248 /* erase the current line */
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#define EC 247 /* erase the current character */
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#define AYT 246 /* are you there */
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#define AO 245 /* abort output--but let prog finish */
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#define IP 244 /* interrupt process--permanently */
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#define BREAK 243 /* break */
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#define DM 242 /* data mark--for connect. cleaning */
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#define NOP 241 /* nop */
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#define EOR 239 /* end of record (transparent mode) */
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#define ABORT 238 /* Abort process */
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#define SUSP 237 /* Suspend process */
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#define xEOF 236 /* End of file: EOF is already used... */
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#define GA 249 /* you may reverse the line */
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#define EL 248 /* erase the current line */
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#define EC 247 /* erase the current character */
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#define AYT 246 /* are you there */
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#define AO 245 /* abort output--but let prog finish */
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#define IP 244 /* interrupt process--permanently */
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#define BREAK 243 /* break */
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#define DM 242 /* data mark--for connect. cleaning */
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#define NOP 241 /* nop */
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#define EOR 239 /* end of record (transparent mode) */
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#define ABORT 238 /* Abort process */
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#define SUSP 237 /* Suspend process */
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#define xEOF 236 /* End of file: EOF is already used... */
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#define TELOPT_BINARY 0 /* 8-bit data path */
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#define TELOPT_ECHO 1 /* echo */
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#define TELOPT_RCP 2 /* prepare to reconnect */
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#define TELOPT_SGA 3 /* suppress go ahead */
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#define TELOPT_NAMS 4 /* approximate message size */
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#define TELOPT_STATUS 5 /* give status */
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#define TELOPT_TM 6 /* timing mark */
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#define TELOPT_RCTE 7 /* remote controlled transmission and echo */
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#define TELOPT_NAOL 8 /* negotiate about output line width */
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#define TELOPT_NAOP 9 /* negotiate about output page size */
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#define TELOPT_NAOCRD 10 /* negotiate about CR disposition */
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#define TELOPT_NAOHTS 11 /* negotiate about horizontal tabstops */
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#define TELOPT_NAOHTD 12 /* negotiate about horizontal tab disposition */
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#define TELOPT_NAOFFD 13 /* negotiate about formfeed disposition */
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#define TELOPT_NAOVTS 14 /* negotiate about vertical tab stops */
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#define TELOPT_NAOVTD 15 /* negotiate about vertical tab disposition */
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#define TELOPT_NAOLFD 16 /* negotiate about output LF disposition */
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#define TELOPT_XASCII 17 /* extended ascic character set */
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#define TELOPT_LOGOUT 18 /* force logout */
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#define TELOPT_BM 19 /* byte macro */
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#define TELOPT_DET 20 /* data entry terminal */
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#define TELOPT_SUPDUP 21 /* supdup protocol */
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#define TELOPT_SUPDUPOUTPUT 22 /* supdup output */
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#define TELOPT_SNDLOC 23 /* send location */
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#define TELOPT_TTYPE 24 /* terminal type */
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#define TELOPT_EOR 25 /* end or record */
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#define TELOPT_TUID 26 /* TACACS user identification */
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#define TELOPT_OUTMRK 27 /* output marking */
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#define TELOPT_TTYLOC 28 /* terminal location number */
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#define TELOPT_3270REGIME 29 /* 3270 regime */
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#define TELOPT_X3PAD 30 /* X.3 PAD */
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#define TELOPT_NAWS 31 /* window size */
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#define TELOPT_TSPEED 32 /* terminal speed */
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#define TELOPT_LFLOW 33 /* remote flow control */
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#define TELOPT_LINEMODE 34 /* Linemode option */
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#define TELOPT_XDISPLOC 35 /* X Display Location */
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#define TELOPT_OLD_ENVIRON 36 /* Old - Environment variables */
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#define TELOPT_AUTHENTICATION 37/* Authenticate */
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#define TELOPT_ENCRYPT 38 /* Encryption option */
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#define TELOPT_NEW_ENVIRON 39 /* New - Environment variables */
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#define TELOPT_EXOPL 255 /* extended-options-list */
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#define TELOPT_BINARY 0 /* 8-bit data path */
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#define TELOPT_ECHO 1 /* echo */
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#define TELOPT_RCP 2 /* prepare to reconnect */
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#define TELOPT_SGA 3 /* suppress go ahead */
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#define TELOPT_NAMS 4 /* approximate message size */
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#define TELOPT_STATUS 5 /* give status */
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#define TELOPT_TM 6 /* timing mark */
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#define TELOPT_RCTE 7 /* remote controlled transmission and echo */
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#define TELOPT_NAOL 8 /* negotiate about output line width */
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#define TELOPT_NAOP 9 /* negotiate about output page size */
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#define TELOPT_NAOCRD 10 /* negotiate about CR disposition */
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#define TELOPT_NAOHTS 11 /* negotiate about horizontal tabstops */
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#define TELOPT_NAOHTD 12 /* negotiate about horizontal tab disposition */
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#define TELOPT_NAOFFD 13 /* negotiate about formfeed disposition */
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#define TELOPT_NAOVTS 14 /* negotiate about vertical tab stops */
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#define TELOPT_NAOVTD 15 /* negotiate about vertical tab disposition */
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#define TELOPT_NAOLFD 16 /* negotiate about output LF disposition */
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#define TELOPT_XASCII 17 /* extended ascic character set */
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#define TELOPT_LOGOUT 18 /* force logout */
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#define TELOPT_BM 19 /* byte macro */
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#define TELOPT_DET 20 /* data entry terminal */
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#define TELOPT_SUPDUP 21 /* supdup protocol */
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#define TELOPT_SUPDUPOUTPUT 22 /* supdup output */
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#define TELOPT_SNDLOC 23 /* send location */
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#define TELOPT_TTYPE 24 /* terminal type */
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#define TELOPT_EOR 25 /* end or record */
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#define TELOPT_TUID 26 /* TACACS user identification */
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#define TELOPT_OUTMRK 27 /* output marking */
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#define TELOPT_TTYLOC 28 /* terminal location number */
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#define TELOPT_3270REGIME 29 /* 3270 regime */
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#define TELOPT_X3PAD 30 /* X.3 PAD */
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#define TELOPT_NAWS 31 /* window size */
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#define TELOPT_TSPEED 32 /* terminal speed */
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#define TELOPT_LFLOW 33 /* remote flow control */
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#define TELOPT_LINEMODE 34 /* Linemode option */
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#define TELOPT_XDISPLOC 35 /* X Display Location */
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#define TELOPT_OLD_ENVIRON 36 /* Old - Environment variables */
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#define TELOPT_AUTHENTICATION 37 /* Authenticate */
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#define TELOPT_ENCRYPT 38 /* Encryption option */
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#define TELOPT_NEW_ENVIRON 39 /* New - Environment variables */
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#define TELOPT_EXOPL 255 /* extended-options-list */
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#define TELQUAL_IS 0 /* option is... */
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#define TELQUAL_SEND 1 /* send option */
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#define TELQUAL_INFO 2 /* ENVIRON: informational version of IS */
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#define TELQUAL_IS 0 /* option is... */
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#define TELQUAL_SEND 1 /* send option */
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#define TELQUAL_INFO 2 /* ENVIRON: informational version of IS */
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#define BSD_VAR 1
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#define BSD_VALUE 0
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#define RFC_VAR 0
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@ -91,15 +91,49 @@ static Socket s = NULL;
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#define iswritable(x) ( (x) != IAC && (x) != CR )
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static char *telopt(int opt) {
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static char *telopt(int opt)
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{
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#define i(x) if (opt == TELOPT_ ## x) return #x;
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i(BINARY); i(ECHO); i(RCP); i(SGA); i(NAMS); i(STATUS); i(TM); i(RCTE);
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i(NAOL); i(NAOP); i(NAOCRD); i(NAOHTS); i(NAOHTD); i(NAOFFD); i(NAOVTS);
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i(NAOVTD); i(NAOLFD); i(XASCII); i(LOGOUT); i(BM); i(DET); i(SUPDUP);
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i(SUPDUPOUTPUT); i(SNDLOC); i(TTYPE); i(EOR); i(TUID); i(OUTMRK);
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i(TTYLOC); i(X3PAD); i(NAWS); i(TSPEED); i(LFLOW); i(LINEMODE);
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i(XDISPLOC); i(OLD_ENVIRON); i(AUTHENTICATION); i(ENCRYPT);
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i(NEW_ENVIRON); i(EXOPL);
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i(BINARY);
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i(ECHO);
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i(RCP);
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i(SGA);
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i(NAMS);
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i(STATUS);
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i(TM);
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i(RCTE);
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i(NAOL);
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i(NAOP);
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i(NAOCRD);
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i(NAOHTS);
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i(NAOHTD);
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i(NAOFFD);
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i(NAOVTS);
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i(NAOVTD);
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i(NAOLFD);
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i(XASCII);
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i(LOGOUT);
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i(BM);
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i(DET);
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i(SUPDUP);
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i(SUPDUPOUTPUT);
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i(SNDLOC);
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i(TTYPE);
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i(EOR);
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i(TUID);
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i(OUTMRK);
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i(TTYLOC);
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i(X3PAD);
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i(NAWS);
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i(TSPEED);
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i(LFLOW);
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i(LINEMODE);
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i(XDISPLOC);
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i(OLD_ENVIRON);
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i(AUTHENTICATION);
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i(ENCRYPT);
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i(NEW_ENVIRON);
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i(EXOPL);
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#undef i
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return "<unknown>";
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}
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@ -116,16 +150,24 @@ struct Opt {
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} state;
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};
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static struct Opt o_naws = {WILL, WONT, DO, DONT, TELOPT_NAWS, REQUESTED};
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static struct Opt o_tspeed = {WILL, WONT, DO, DONT, TELOPT_TSPEED, REQUESTED};
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static struct Opt o_ttype = {WILL, WONT, DO, DONT, TELOPT_TTYPE, REQUESTED};
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static struct Opt o_oenv = {WILL, WONT, DO, DONT, TELOPT_OLD_ENVIRON,
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INACTIVE};
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static struct Opt o_nenv = {WILL, WONT, DO, DONT, TELOPT_NEW_ENVIRON,
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REQUESTED};
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static struct Opt o_echo = {DO, DONT, WILL, WONT, TELOPT_ECHO, REQUESTED};
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static struct Opt o_we_sga = {WILL, WONT, DO, DONT, TELOPT_SGA, REQUESTED};
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static struct Opt o_they_sga = {DO, DONT, WILL, WONT, TELOPT_SGA, REQUESTED};
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static struct Opt o_naws =
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{ WILL, WONT, DO, DONT, TELOPT_NAWS, REQUESTED };
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static struct Opt o_tspeed =
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{ WILL, WONT, DO, DONT, TELOPT_TSPEED, REQUESTED };
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static struct Opt o_ttype =
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{ WILL, WONT, DO, DONT, TELOPT_TTYPE, REQUESTED };
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static struct Opt o_oenv = { WILL, WONT, DO, DONT, TELOPT_OLD_ENVIRON,
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INACTIVE
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};
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static struct Opt o_nenv = { WILL, WONT, DO, DONT, TELOPT_NEW_ENVIRON,
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REQUESTED
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};
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static struct Opt o_echo =
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{ DO, DONT, WILL, WONT, TELOPT_ECHO, REQUESTED };
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static struct Opt o_we_sga =
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{ WILL, WONT, DO, DONT, TELOPT_SGA, REQUESTED };
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static struct Opt o_they_sga =
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{ DO, DONT, WILL, WONT, TELOPT_SGA, REQUESTED };
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static struct Opt *opts[] = {
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&o_naws, &o_tspeed, &o_ttype, &o_oenv, &o_nenv, &o_echo,
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@ -140,12 +182,14 @@ static char *sb_buf = NULL;
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static int sb_size = 0;
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#define SB_DELTA 1024
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static void c_write1(int c) {
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char cc = (char)c;
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static void c_write1(int c)
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{
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char cc = (char) c;
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from_backend(0, &cc, 1);
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}
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static void log_option (char *sender, int cmd, int option) {
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static void log_option(char *sender, int cmd, int option)
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{
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char buf[50];
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sprintf(buf, "%s:\t%s %s", sender,
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(cmd == WILL ? "WILL" : cmd == WONT ? "WONT" :
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@ -154,32 +198,38 @@ static void log_option (char *sender, int cmd, int option) {
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logevent(buf);
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}
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static void send_opt (int cmd, int option) {
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static void send_opt(int cmd, int option)
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{
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unsigned char b[3];
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b[0] = IAC; b[1] = cmd; b[2] = option;
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b[0] = IAC;
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b[1] = cmd;
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b[2] = option;
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sk_write(s, b, 3);
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log_option("client", cmd, option);
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}
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static void deactivate_option (struct Opt *o) {
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static void deactivate_option(struct Opt *o)
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{
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if (o->state == REQUESTED || o->state == ACTIVE)
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send_opt (o->nsend, o->option);
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send_opt(o->nsend, o->option);
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o->state = REALLY_INACTIVE;
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}
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/*
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* Generate side effects of enabling or disabling an option.
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*/
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static void option_side_effects(struct Opt *o, int enabled) {
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static void option_side_effects(struct Opt *o, int enabled)
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{
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if (o->option == TELOPT_ECHO && o->send == DO)
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echoing = !enabled;
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echoing = !enabled;
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else if (o->option == TELOPT_SGA && o->send == DO)
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editing = !enabled;
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ldisc_send(NULL, 0); /* cause ldisc to notice the change */
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editing = !enabled;
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ldisc_send(NULL, 0); /* cause ldisc to notice the change */
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}
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static void activate_option (struct Opt *o) {
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static void activate_option(struct Opt *o)
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{
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if (o->send == WILL && o->option == TELOPT_NAWS)
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telnet_size();
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if (o->send == WILL &&
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@ -189,40 +239,43 @@ static void activate_option (struct Opt *o) {
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* We may only have one kind of ENVIRON going at a time.
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* This is a hack, but who cares.
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*/
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deactivate_option (o->option==TELOPT_NEW_ENVIRON ? &o_oenv : &o_nenv);
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deactivate_option(o->option ==
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TELOPT_NEW_ENVIRON ? &o_oenv : &o_nenv);
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}
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option_side_effects(o, 1);
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}
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static void refused_option (struct Opt *o) {
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static void refused_option(struct Opt *o)
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{
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if (o->send == WILL && o->option == TELOPT_NEW_ENVIRON &&
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o_oenv.state == INACTIVE) {
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send_opt (WILL, TELOPT_OLD_ENVIRON);
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send_opt(WILL, TELOPT_OLD_ENVIRON);
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o_oenv.state = REQUESTED;
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}
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option_side_effects(o, 0);
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}
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static void proc_rec_opt (int cmd, int option) {
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static void proc_rec_opt(int cmd, int option)
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{
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struct Opt **o;
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log_option ("server", cmd, option);
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log_option("server", cmd, option);
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for (o = opts; *o; o++) {
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if ((*o)->option == option && (*o)->ack == cmd) {
|
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switch ((*o)->state) {
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case REQUESTED:
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(*o)->state = ACTIVE;
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activate_option (*o);
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activate_option(*o);
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break;
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case ACTIVE:
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break;
|
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case INACTIVE:
|
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(*o)->state = ACTIVE;
|
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send_opt ((*o)->send, option);
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activate_option (*o);
|
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send_opt((*o)->send, option);
|
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activate_option(*o);
|
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break;
|
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case REALLY_INACTIVE:
|
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send_opt ((*o)->nsend, option);
|
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send_opt((*o)->nsend, option);
|
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break;
|
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}
|
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return;
|
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@ -230,12 +283,12 @@ static void proc_rec_opt (int cmd, int option) {
|
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switch ((*o)->state) {
|
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case REQUESTED:
|
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(*o)->state = INACTIVE;
|
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refused_option (*o);
|
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refused_option(*o);
|
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break;
|
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case ACTIVE:
|
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(*o)->state = INACTIVE;
|
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send_opt ((*o)->nsend, option);
|
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option_side_effects(*o, 0);
|
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send_opt((*o)->nsend, option);
|
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option_side_effects(*o, 0);
|
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break;
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case INACTIVE:
|
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case REALLY_INACTIVE:
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@ -248,10 +301,11 @@ static void proc_rec_opt (int cmd, int option) {
|
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* If we reach here, the option was one we weren't prepared to
|
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* cope with. So send a negative ack.
|
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*/
|
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send_opt ((cmd == WILL ? DONT : WONT), option);
|
||||
send_opt((cmd == WILL ? DONT : WONT), option);
|
||||
}
|
||||
|
||||
static void process_subneg (void) {
|
||||
static void process_subneg(void)
|
||||
{
|
||||
unsigned char b[2048], *p, *q;
|
||||
int var, value, n;
|
||||
char *e;
|
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@ -259,45 +313,53 @@ static void process_subneg (void) {
|
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switch (sb_opt) {
|
||||
case TELOPT_TSPEED:
|
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if (sb_len == 1 && sb_buf[0] == TELQUAL_SEND) {
|
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char logbuf[sizeof(cfg.termspeed)+80];
|
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b[0] = IAC; b[1] = SB; b[2] = TELOPT_TSPEED;
|
||||
char logbuf[sizeof(cfg.termspeed) + 80];
|
||||
b[0] = IAC;
|
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b[1] = SB;
|
||||
b[2] = TELOPT_TSPEED;
|
||||
b[3] = TELQUAL_IS;
|
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strcpy(b+4, cfg.termspeed);
|
||||
strcpy(b + 4, cfg.termspeed);
|
||||
n = 4 + strlen(cfg.termspeed);
|
||||
b[n] = IAC; b[n+1] = SE;
|
||||
sk_write(s, b, n+2);
|
||||
b[n] = IAC;
|
||||
b[n + 1] = SE;
|
||||
sk_write(s, b, n + 2);
|
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logevent("server:\tSB TSPEED SEND");
|
||||
sprintf(logbuf, "client:\tSB TSPEED IS %s", cfg.termspeed);
|
||||
logevent (logbuf);
|
||||
logevent(logbuf);
|
||||
} else
|
||||
logevent ("server:\tSB TSPEED <something weird>");
|
||||
logevent("server:\tSB TSPEED <something weird>");
|
||||
break;
|
||||
case TELOPT_TTYPE:
|
||||
if (sb_len == 1 && sb_buf[0] == TELQUAL_SEND) {
|
||||
char logbuf[sizeof(cfg.termtype)+80];
|
||||
b[0] = IAC; b[1] = SB; b[2] = TELOPT_TTYPE;
|
||||
char logbuf[sizeof(cfg.termtype) + 80];
|
||||
b[0] = IAC;
|
||||
b[1] = SB;
|
||||
b[2] = TELOPT_TTYPE;
|
||||
b[3] = TELQUAL_IS;
|
||||
for (n = 0; cfg.termtype[n]; n++)
|
||||
b[n+4] = (cfg.termtype[n] >= 'a' && cfg.termtype[n] <= 'z' ?
|
||||
cfg.termtype[n] + 'A'-'a' : cfg.termtype[n]);
|
||||
b[n+4] = IAC; b[n+5] = SE;
|
||||
sk_write(s, b, n+6);
|
||||
b[n+4] = 0;
|
||||
b[n + 4] = (cfg.termtype[n] >= 'a'
|
||||
&& cfg.termtype[n] <=
|
||||
'z' ? cfg.termtype[n] + 'A' -
|
||||
'a' : cfg.termtype[n]);
|
||||
b[n + 4] = IAC;
|
||||
b[n + 5] = SE;
|
||||
sk_write(s, b, n + 6);
|
||||
b[n + 4] = 0;
|
||||
logevent("server:\tSB TTYPE SEND");
|
||||
sprintf(logbuf, "client:\tSB TTYPE IS %s", b+4);
|
||||
sprintf(logbuf, "client:\tSB TTYPE IS %s", b + 4);
|
||||
logevent(logbuf);
|
||||
} else
|
||||
logevent("server:\tSB TTYPE <something weird>\r\n");
|
||||
break;
|
||||
case TELOPT_OLD_ENVIRON:
|
||||
case TELOPT_NEW_ENVIRON:
|
||||
case TELOPT_NEW_ENVIRON:
|
||||
p = sb_buf;
|
||||
q = p + sb_len;
|
||||
if (p < q && *p == TELQUAL_SEND) {
|
||||
char logbuf[50];
|
||||
p++;
|
||||
sprintf (logbuf, "server:\tSB %s SEND", telopt(sb_opt));
|
||||
logevent (logbuf);
|
||||
sprintf(logbuf, "server:\tSB %s SEND", telopt(sb_opt));
|
||||
logevent(logbuf);
|
||||
if (sb_opt == TELOPT_OLD_ENVIRON) {
|
||||
if (cfg.rfc_environ) {
|
||||
value = RFC_VALUE;
|
||||
@ -327,29 +389,40 @@ static void process_subneg (void) {
|
||||
value = RFC_VALUE;
|
||||
var = RFC_VAR;
|
||||
}
|
||||
b[0] = IAC; b[1] = SB; b[2] = sb_opt;
|
||||
b[0] = IAC;
|
||||
b[1] = SB;
|
||||
b[2] = sb_opt;
|
||||
b[3] = TELQUAL_IS;
|
||||
n = 4;
|
||||
e = cfg.environmt;
|
||||
e = cfg.environmt;
|
||||
while (*e) {
|
||||
b[n++] = var;
|
||||
while (*e && *e != '\t') b[n++] = *e++;
|
||||
if (*e == '\t') e++;
|
||||
while (*e && *e != '\t')
|
||||
b[n++] = *e++;
|
||||
if (*e == '\t')
|
||||
e++;
|
||||
b[n++] = value;
|
||||
while (*e) b[n++] = *e++;
|
||||
while (*e)
|
||||
b[n++] = *e++;
|
||||
e++;
|
||||
}
|
||||
if (*cfg.username) {
|
||||
b[n++] = var; b[n++] = 'U'; b[n++] = 'S';
|
||||
b[n++] = 'E'; b[n++] = 'R'; b[n++] = value;
|
||||
b[n++] = var;
|
||||
b[n++] = 'U';
|
||||
b[n++] = 'S';
|
||||
b[n++] = 'E';
|
||||
b[n++] = 'R';
|
||||
b[n++] = value;
|
||||
e = cfg.username;
|
||||
while (*e) b[n++] = *e++;
|
||||
while (*e)
|
||||
b[n++] = *e++;
|
||||
}
|
||||
b[n++] = IAC; b[n++] = SE;
|
||||
b[n++] = IAC;
|
||||
b[n++] = SE;
|
||||
sk_write(s, b, n);
|
||||
sprintf(logbuf, "client:\tSB %s IS %s", telopt(sb_opt),
|
||||
n==6 ? "<nothing>" : "<stuff>");
|
||||
logevent (logbuf);
|
||||
n == 6 ? "<nothing>" : "<stuff>");
|
||||
logevent(logbuf);
|
||||
}
|
||||
break;
|
||||
}
|
||||
@ -360,7 +433,8 @@ static enum {
|
||||
SEENSB, SUBNEGOT, SUBNEG_IAC, SEENCR
|
||||
} telnet_state = TOPLEVEL;
|
||||
|
||||
static void do_telnet_read (char *buf, int len) {
|
||||
static void do_telnet_read(char *buf, int len)
|
||||
{
|
||||
|
||||
while (len--) {
|
||||
int c = (unsigned char) *buf++;
|
||||
@ -385,7 +459,8 @@ static void do_telnet_read (char *buf, int len) {
|
||||
* Oh well, we do get the DM in the right place so I'll
|
||||
* just stop hiding on the next 0xf2 and hope for the best.
|
||||
*/
|
||||
else if (c == DM) in_synch = 0;
|
||||
else if (c == DM)
|
||||
in_synch = 0;
|
||||
#endif
|
||||
if (c == CR)
|
||||
telnet_state = SEENCR;
|
||||
@ -394,16 +469,20 @@ static void do_telnet_read (char *buf, int len) {
|
||||
}
|
||||
break;
|
||||
case SEENIAC:
|
||||
if (c == DO) telnet_state = SEENDO;
|
||||
else if (c == DONT) telnet_state = SEENDONT;
|
||||
else if (c == WILL) telnet_state = SEENWILL;
|
||||
else if (c == WONT) telnet_state = SEENWONT;
|
||||
else if (c == SB) telnet_state = SEENSB;
|
||||
if (c == DO)
|
||||
telnet_state = SEENDO;
|
||||
else if (c == DONT)
|
||||
telnet_state = SEENDONT;
|
||||
else if (c == WILL)
|
||||
telnet_state = SEENWILL;
|
||||
else if (c == WONT)
|
||||
telnet_state = SEENWONT;
|
||||
else if (c == SB)
|
||||
telnet_state = SEENSB;
|
||||
else if (c == DM) {
|
||||
in_synch = 0;
|
||||
in_synch = 0;
|
||||
telnet_state = TOPLEVEL;
|
||||
}
|
||||
else {
|
||||
} else {
|
||||
/* ignore everything else; print it if it's IAC */
|
||||
if (c == IAC) {
|
||||
c_write1(c);
|
||||
@ -412,19 +491,19 @@ static void do_telnet_read (char *buf, int len) {
|
||||
}
|
||||
break;
|
||||
case SEENWILL:
|
||||
proc_rec_opt (WILL, c);
|
||||
proc_rec_opt(WILL, c);
|
||||
telnet_state = TOPLEVEL;
|
||||
break;
|
||||
case SEENWONT:
|
||||
proc_rec_opt (WONT, c);
|
||||
proc_rec_opt(WONT, c);
|
||||
telnet_state = TOPLEVEL;
|
||||
break;
|
||||
case SEENDO:
|
||||
proc_rec_opt (DO, c);
|
||||
proc_rec_opt(DO, c);
|
||||
telnet_state = TOPLEVEL;
|
||||
break;
|
||||
case SEENDONT:
|
||||
proc_rec_opt (DONT, c);
|
||||
proc_rec_opt(DONT, c);
|
||||
telnet_state = TOPLEVEL;
|
||||
break;
|
||||
case SEENSB:
|
||||
@ -436,7 +515,7 @@ static void do_telnet_read (char *buf, int len) {
|
||||
if (c == IAC)
|
||||
telnet_state = SUBNEG_IAC;
|
||||
else {
|
||||
subneg_addchar:
|
||||
subneg_addchar:
|
||||
if (sb_len >= sb_size) {
|
||||
char *newbuf;
|
||||
sb_size += SB_DELTA;
|
||||
@ -450,7 +529,7 @@ static void do_telnet_read (char *buf, int len) {
|
||||
}
|
||||
if (sb_len < sb_size)
|
||||
sb_buf[sb_len++] = c;
|
||||
telnet_state = SUBNEGOT;/* in case we came here by goto */
|
||||
telnet_state = SUBNEGOT; /* in case we came here by goto */
|
||||
}
|
||||
break;
|
||||
case SUBNEG_IAC:
|
||||
@ -465,19 +544,23 @@ static void do_telnet_read (char *buf, int len) {
|
||||
}
|
||||
}
|
||||
|
||||
static int telnet_closing (Plug plug, char *error_msg, int error_code, int calling_back) {
|
||||
static int telnet_closing(Plug plug, char *error_msg, int error_code,
|
||||
int calling_back)
|
||||
{
|
||||
sk_close(s);
|
||||
s = NULL;
|
||||
if (error_msg) {
|
||||
/* A socket error has occurred. */
|
||||
connection_fatal (error_msg);
|
||||
} /* Otherwise, the remote side closed the connection normally. */
|
||||
/* A socket error has occurred. */
|
||||
connection_fatal(error_msg);
|
||||
} /* Otherwise, the remote side closed the connection normally. */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int telnet_receive(Plug plug, int urgent, char *data, int len) {
|
||||
if(urgent) in_synch = TRUE;
|
||||
do_telnet_read (data, len);
|
||||
static int telnet_receive(Plug plug, int urgent, char *data, int len)
|
||||
{
|
||||
if (urgent)
|
||||
in_synch = TRUE;
|
||||
do_telnet_read(data, len);
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -488,7 +571,8 @@ static int telnet_receive(Plug plug, int urgent, char *data, int len) {
|
||||
*
|
||||
* Also places the canonical host name into `realhost'.
|
||||
*/
|
||||
static char *telnet_init (char *host, int port, char **realhost) {
|
||||
static char *telnet_init(char *host, int port, char **realhost)
|
||||
{
|
||||
static struct plug_function_table fn_table = {
|
||||
telnet_closing,
|
||||
telnet_receive
|
||||
@ -501,7 +585,7 @@ static char *telnet_init (char *host, int port, char **realhost) {
|
||||
* Try to find host.
|
||||
*/
|
||||
addr = sk_namelookup(host, realhost);
|
||||
if ( (err = sk_addr_error(addr)) )
|
||||
if ((err = sk_addr_error(addr)))
|
||||
return err;
|
||||
|
||||
if (port < 0)
|
||||
@ -511,7 +595,7 @@ static char *telnet_init (char *host, int port, char **realhost) {
|
||||
* Open socket.
|
||||
*/
|
||||
s = sk_new(addr, port, 0, 1, &fn_table_ptr);
|
||||
if ( (err = sk_socket_error(s)) )
|
||||
if ((err = sk_socket_error(s)))
|
||||
return err;
|
||||
|
||||
sk_addr_free(addr);
|
||||
@ -524,7 +608,7 @@ static char *telnet_init (char *host, int port, char **realhost) {
|
||||
|
||||
for (o = opts; *o; o++)
|
||||
if ((*o)->state == REQUESTED)
|
||||
send_opt ((*o)->send, (*o)->option);
|
||||
send_opt((*o)->send, (*o)->option);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -538,7 +622,8 @@ static char *telnet_init (char *host, int port, char **realhost) {
|
||||
/*
|
||||
* Called to send data down the Telnet connection.
|
||||
*/
|
||||
static void telnet_send (char *buf, int len) {
|
||||
static void telnet_send(char *buf, int len)
|
||||
{
|
||||
char *p;
|
||||
static unsigned char iac[2] = { IAC, IAC };
|
||||
static unsigned char cr[2] = { CR, NUL };
|
||||
@ -548,14 +633,15 @@ static void telnet_send (char *buf, int len) {
|
||||
return;
|
||||
|
||||
p = buf;
|
||||
while (p < buf+len) {
|
||||
while (p < buf + len) {
|
||||
char *q = p;
|
||||
|
||||
while (iswritable((unsigned char)*p) && p < buf+len) p++;
|
||||
sk_write(s, q, p-q);
|
||||
while (iswritable((unsigned char) *p) && p < buf + len)
|
||||
p++;
|
||||
sk_write(s, q, p - q);
|
||||
|
||||
while (p < buf+len && !iswritable((unsigned char)*p)) {
|
||||
sk_write(s, (unsigned char)*p == IAC ? iac : nl, 2);
|
||||
while (p < buf + len && !iswritable((unsigned char) *p)) {
|
||||
sk_write(s, (unsigned char) *p == IAC ? iac : nl, 2);
|
||||
p++;
|
||||
}
|
||||
}
|
||||
@ -564,27 +650,34 @@ static void telnet_send (char *buf, int len) {
|
||||
/*
|
||||
* Called to set the size of the window from Telnet's POV.
|
||||
*/
|
||||
static void telnet_size(void) {
|
||||
static void telnet_size(void)
|
||||
{
|
||||
unsigned char b[16];
|
||||
char logbuf[50];
|
||||
|
||||
if (s == NULL || o_naws.state != ACTIVE)
|
||||
return;
|
||||
b[0] = IAC; b[1] = SB; b[2] = TELOPT_NAWS;
|
||||
b[3] = cols >> 8; b[4] = cols & 0xFF;
|
||||
b[5] = rows >> 8; b[6] = rows & 0xFF;
|
||||
b[7] = IAC; b[8] = SE;
|
||||
b[0] = IAC;
|
||||
b[1] = SB;
|
||||
b[2] = TELOPT_NAWS;
|
||||
b[3] = cols >> 8;
|
||||
b[4] = cols & 0xFF;
|
||||
b[5] = rows >> 8;
|
||||
b[6] = rows & 0xFF;
|
||||
b[7] = IAC;
|
||||
b[8] = SE;
|
||||
sk_write(s, b, 9);
|
||||
sprintf(logbuf, "client:\tSB NAWS %d,%d",
|
||||
((unsigned char)b[3] << 8) + (unsigned char)b[4],
|
||||
((unsigned char)b[5] << 8) + (unsigned char)b[6]);
|
||||
logevent (logbuf);
|
||||
((unsigned char) b[3] << 8) + (unsigned char) b[4],
|
||||
((unsigned char) b[5] << 8) + (unsigned char) b[6]);
|
||||
logevent(logbuf);
|
||||
}
|
||||
|
||||
/*
|
||||
* Send Telnet special codes.
|
||||
*/
|
||||
static void telnet_special (Telnet_Special code) {
|
||||
static void telnet_special(Telnet_Special code)
|
||||
{
|
||||
unsigned char b[2];
|
||||
|
||||
if (s == NULL)
|
||||
@ -592,51 +685,96 @@ static void telnet_special (Telnet_Special code) {
|
||||
|
||||
b[0] = IAC;
|
||||
switch (code) {
|
||||
case TS_AYT: b[1] = AYT; sk_write(s, b, 2); break;
|
||||
case TS_BRK: b[1] = BREAK; sk_write(s, b, 2); break;
|
||||
case TS_EC: b[1] = EC; sk_write(s, b, 2); break;
|
||||
case TS_EL: b[1] = EL; sk_write(s, b, 2); break;
|
||||
case TS_GA: b[1] = GA; sk_write(s, b, 2); break;
|
||||
case TS_NOP: b[1] = NOP; sk_write(s, b, 2); break;
|
||||
case TS_ABORT: b[1] = ABORT; sk_write(s, b, 2); break;
|
||||
case TS_AO: b[1] = AO; sk_write(s, b, 2); break;
|
||||
case TS_IP: b[1] = IP; sk_write(s, b, 2); break;
|
||||
case TS_SUSP: b[1] = SUSP; sk_write(s, b, 2); break;
|
||||
case TS_EOR: b[1] = EOR; sk_write(s, b, 2); break;
|
||||
case TS_EOF: b[1] = xEOF; sk_write(s, b, 2); break;
|
||||
case TS_AYT:
|
||||
b[1] = AYT;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_BRK:
|
||||
b[1] = BREAK;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_EC:
|
||||
b[1] = EC;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_EL:
|
||||
b[1] = EL;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_GA:
|
||||
b[1] = GA;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_NOP:
|
||||
b[1] = NOP;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_ABORT:
|
||||
b[1] = ABORT;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_AO:
|
||||
b[1] = AO;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_IP:
|
||||
b[1] = IP;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_SUSP:
|
||||
b[1] = SUSP;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_EOR:
|
||||
b[1] = EOR;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_EOF:
|
||||
b[1] = xEOF;
|
||||
sk_write(s, b, 2);
|
||||
break;
|
||||
case TS_SYNCH:
|
||||
b[1] = DM;
|
||||
sk_write (s, b, 1);
|
||||
sk_write_oob (s, b+1, 1);
|
||||
break;
|
||||
b[1] = DM;
|
||||
sk_write(s, b, 1);
|
||||
sk_write_oob(s, b + 1, 1);
|
||||
break;
|
||||
case TS_RECHO:
|
||||
if (o_echo.state == INACTIVE || o_echo.state == REALLY_INACTIVE) {
|
||||
o_echo.state = REQUESTED;
|
||||
send_opt (o_echo.send, o_echo.option);
|
||||
send_opt(o_echo.send, o_echo.option);
|
||||
}
|
||||
break;
|
||||
case TS_LECHO:
|
||||
if (o_echo.state == ACTIVE) {
|
||||
o_echo.state = REQUESTED;
|
||||
send_opt (o_echo.nsend, o_echo.option);
|
||||
send_opt(o_echo.nsend, o_echo.option);
|
||||
}
|
||||
break;
|
||||
case TS_PING:
|
||||
case TS_PING:
|
||||
if (o_they_sga.state == ACTIVE) {
|
||||
b[1] = NOP;
|
||||
sk_write(s, b, 2);
|
||||
b[1] = NOP;
|
||||
sk_write(s, b, 2);
|
||||
}
|
||||
break;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static Socket telnet_socket(void) { return s; }
|
||||
static Socket telnet_socket(void)
|
||||
{
|
||||
return s;
|
||||
}
|
||||
|
||||
static int telnet_sendok(void) { return 1; }
|
||||
static int telnet_sendok(void)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int telnet_ldisc(int option) {
|
||||
if (option == LD_ECHO) return echoing;
|
||||
if (option == LD_EDIT) return editing;
|
||||
static int telnet_ldisc(int option)
|
||||
{
|
||||
if (option == LD_ECHO)
|
||||
return echoing;
|
||||
if (option == LD_EDIT)
|
||||
return editing;
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user