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Diffstat (limited to 'lib/keystroke.h')
| -rw-r--r-- | lib/keystroke.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/lib/keystroke.h b/lib/keystroke.h new file mode 100644 index 00000000..4dc94d12 --- /dev/null +++ b/lib/keystroke.h @@ -0,0 +1,187 @@ +/* Keystroke Buffering -- header + * Copyright (C) 2010 Chris Hall (GMCH), Highwayman + * + * This file is part of GNU Zebra. + * + * GNU Zebra 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, or (at your + * option) any later version. + * + * GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef _ZEBRA_KEYSTROKE_H +#define _ZEBRA_KEYSTROKE_H + +#include <stddef.h> +#include <stdint.h> +#include <stdbool.h> + +#include <arpa/telnet.h> + +#include "zassert.h" +#include "vio_fifo.h" + +#ifndef Inline +#define Inline static inline +#endif + +/*============================================================================== + * Keystroke buffering + */ + +enum { keystroke_max_len = 100 } ; + +enum keystroke_type +{ + ks_null = 0, /* nothing, nada, bupkis... */ + ks_char, /* character -- uint32_t */ + ks_esc, /* ESC xx */ + ks_csi, /* ESC [ ... or CSI ... */ + ks_iac, /* Telnet command */ + + ks_type_count, + + ks_type_reserved = 0x0F, +} ; +CONFIRM(ks_type_count <= ks_type_reserved) ; + +enum keystroke_null +{ + knull_not_eof, + knull_eof +}; + +enum keystroke_flags +{ + kf_compound = 0x80, /* marker on all compound characters */ + kf_reserved = 0x40, + kf_broken = 0x20, /* badly formed in some way */ + kf_truncated = 0x10, /* too big for buffer ! */ + /* for ks_null => EOF */ + + kf_type_mask = 0x0F, /* extraction of type */ +} ; + +CONFIRM(ks_type_reserved == kf_type_mask) ; + +typedef struct keystroke* keystroke ; +typedef struct keystroke_stream* keystroke_stream ; + +struct keystroke +{ + enum keystroke_type type ; + uint8_t flags ; + + uint32_t value ; + + unsigned len ; + uint8_t buf[keystroke_max_len] ; +} ; + +/* Telnet commands/options */ +enum tn_Command +{ + tn_IAC = IAC, /* IAC IAC interpret as command: */ + tn_DONT = DONT, /* IAC DONT <opt> you are not to use option */ + tn_DO = DO, /* IAC DO <opt> please, you use option */ + tn_WONT = WONT, /* IAC WONT <opt> I won't use option */ + tn_WILL = WILL, /* IAC WILL <opt> I will use option */ + tn_SB = SB, /* IAC SB <opt> interpret as subnegotiation */ + tn_GA = GA, /* IAC GA you may reverse the line */ + tn_EL = EL, /* IAC EL erase the current line */ + tn_EC = EC, /* IAC EC erase the current character */ + tn_AYT = AYT, /* IAC AYT are you there */ + tn_AO = AO, /* IAC AO abort output--but let prog finish */ + tn_IP = IP, /* IAC IP interrupt process--permanently */ + tn_BREAK = BREAK, /* IAC BREAK break */ + tn_DM = DM, /* IAC DM data mark--for connect. cleaning */ + tn_NOP = NOP, /* IAC NOP nop */ + tn_SE = SE, /* IAC SE end sub negotiation */ + tn_EOR = EOR, /* IAC EOR end of record (transparent mode) */ + tn_ABORT = ABORT, /* IAC ABORT Abort process */ + tn_SUSP = SUSP, /* IAC SUSP Suspend process */ + tn_EOF = xEOF, /* IAC xEOF End of file: EOF is already used... */ + + tn_SYNCH = SYNCH, /* IAC SYNCH for telfunc calls */ +} ; + +enum tn_Option +{ + to_BINARY = TELOPT_BINARY, /* 8-bit data path */ + to_ECHO = TELOPT_ECHO, /* echo */ + to_RCP = TELOPT_RCP, /* prepare to reconnect */ + to_SGA = TELOPT_SGA, /* suppress go ahead */ + to_NAMS = TELOPT_NAMS, /* approximate message size */ + to_STATUS = TELOPT_STATUS, /* give status */ + to_TM = TELOPT_TM, /* timing mark */ + to_RCTE = TELOPT_RCTE, /* remote controlled tx and echo */ + to_NAOL = TELOPT_NAOL, /* neg. about output line width */ + to_NAOP = TELOPT_NAOP, /* neg. about output page size */ + to_NAOCRD = TELOPT_NAOCRD, /* neg. about CR disposition */ + to_NAOHTS = TELOPT_NAOHTS, /* neg. about horizontal tabstops */ + to_NAOHTD = TELOPT_NAOHTD, /* neg. about horizontal tab disp. */ + to_NAOFFD = TELOPT_NAOFFD, /* neg. about formfeed disposition */ + to_NAOVTS = TELOPT_NAOVTS, /* neg. about vertical tab stops */ + to_NAOVTD = TELOPT_NAOVTD, /* neg. about vertical tab disp. */ + to_NAOLFD = TELOPT_NAOLFD, /* neg. about output LF disposition */ + to_XASCII = TELOPT_XASCII, /* extended ascii character set */ + to_LOGOUT = TELOPT_LOGOUT, /* force logout */ + to_BM = TELOPT_BM, /* byte macro */ + to_DET = TELOPT_DET, /* data entry terminal */ + to_SUPDUP = TELOPT_SUPDUP, /* supdup protocol */ + to_SUPDUPOUTPUT = TELOPT_SUPDUPOUTPUT,/* supdup output */ + to_SNDLOC = TELOPT_SNDLOC, /* send location */ + to_TTYPE = TELOPT_TTYPE, /* terminal type */ + to_EOR = TELOPT_EOR, /* end or record */ + to_TUID = TELOPT_TUID, /* TACACS user identification */ + to_OUTMRK = TELOPT_OUTMRK, /* output marking */ + to_TTYLOC = TELOPT_TTYLOC, /* terminal location number */ + to_3270REGIME = TELOPT_3270REGIME, /* 3270 regime */ + to_X3PAD = TELOPT_X3PAD, /* X.3 PAD */ + to_NAWS = TELOPT_NAWS, /* window size */ + to_TSPEED = TELOPT_TSPEED, /* terminal speed */ + to_LFLOW = TELOPT_LFLOW, /* remote flow control */ + to_LINEMODE = TELOPT_LINEMODE, /* Linemode option */ + to_XDISPLOC = TELOPT_XDISPLOC, /* X Display Location */ + to_OLD_ENVIRON = TELOPT_OLD_ENVIRON, /* Old - Environment variables */ + to_AUTHENTICATION = TELOPT_AUTHENTICATION, /* Authenticate */ + to_ENCRYPT = TELOPT_ENCRYPT, /* Encryption option */ + to_NEW_ENVIRON = TELOPT_NEW_ENVIRON, /* New - Environment variables */ + to_EXOPL = TELOPT_EXOPL, /* extended-options-list */ +} ; + + +/*============================================================================== + * Functions + */ +extern keystroke_stream +keystroke_stream_new(uint8_t csi_char) ; + +extern void +keystroke_stream_set_eof(keystroke_stream stream) ; + +extern void +keystroke_stream_free(keystroke_stream stream) ; + +extern bool +keystroke_stream_empty(keystroke_stream stream) ; +extern bool +keystroke_stream_eof(keystroke_stream stream) ; + +extern void +keystroke_input(keystroke_stream stream, uint8_t* ptr, size_t len, + keystroke steal) ; +extern int +keystroke_get(keystroke_stream stream, keystroke stroke) ; + +#endif /* _ZEBRA_KEYSTROKE_H */ |