Added public files
Roughly added all public files. Probably missed some, though.
diff --git a/sys/telnet.h b/sys/telnet.h
new file mode 100644
index 0000000..94a2b14
--- /dev/null
+++ b/sys/telnet.h
@@ -0,0 +1,261 @@
+#ifndef TELNET_H__
+#define TELNET_H__ 1
+
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley. The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * @(#)telnet.h 5.7 (Berkeley) 11/14/89
+ */
+
+/*
+ * Definitions for the TELNET protocol.
+ */
+#define IAC 255 /* interpret as command: */
+#define DONT 254 /* you are not to use option */
+#define DO 253 /* please, you use option */
+#define WONT 252 /* I won't use option */
+#define WILL 251 /* I will use option */
+#define SB 250 /* interpret as subnegotiation */
+#define GA 249 /* you may reverse the line */
+#define EL 248 /* erase the current line */
+#define EC 247 /* erase the current character */
+#define AYT 246 /* are you there */
+#define AO 245 /* abort output--but let prog finish */
+#define IP 244 /* interrupt process--permanently */
+#define BREAK 243 /* break */
+#define DM 242 /* data mark--for connect. cleaning */
+#define NOP 241 /* nop */
+#define SE 240 /* end sub negotiation */
+#define EOR 239 /* end of record (transparent mode) */
+#define ABORT 238 /* Abort process */
+#define SUSP 237 /* Suspend process */
+#define xEOF 236 /* End of file: EOF is already used... */
+
+#define SYNCH 242 /* for telfunc calls */
+
+#ifdef __DRIVER_SOURCE__
+
+#ifdef TELCMDS
+char *telcmds[] = {
+ "EOF", "SUSP", "ABORT", "EOR",
+ "SE", "NOP", "DMARK", "BRK", "IP", "AO", "AYT", "EC",
+ "EL", "GA", "SB", "WILL", "WONT", "DO", "DONT", "IAC",
+};
+#define TELCMD_FIRST xEOF
+#define TELCMD_LAST IAC
+#define TELCMD_OK(x) ((x) <= TELCMD_LAST && (x) >= TELCMD_FIRST)
+#define TELCMD(x) telcmds[(x)-TELCMD_FIRST]
+#endif
+
+#endif /* __DRIVER_SOURCE__ */
+
+/* telnet options */
+#define TELOPT_BINARY 0 /* 8-bit data path */
+#define TELOPT_ECHO 1 /* echo */
+#define TELOPT_RCP 2 /* prepare to reconnect */
+#define TELOPT_SGA 3 /* suppress go ahead */
+#define TELOPT_NAMS 4 /* approximate message size */
+#define TELOPT_STATUS 5 /* give status */
+#define TELOPT_TM 6 /* timing mark */
+#define TELOPT_RCTE 7 /* remote controlled transmission and echo */
+#define TELOPT_NAOL 8 /* negotiate about output line width */
+#define TELOPT_NAOP 9 /* negotiate about output page size */
+#define TELOPT_NAOCRD 10 /* negotiate about CR disposition */
+#define TELOPT_NAOHTS 11 /* negotiate about horizontal tabstops */
+#define TELOPT_NAOHTD 12 /* negotiate about horizontal tab disposition */
+#define TELOPT_NAOFFD 13 /* negotiate about formfeed disposition */
+#define TELOPT_NAOVTS 14 /* negotiate about vertical tab stops */
+#define TELOPT_NAOVTD 15 /* negotiate about vertical tab disposition */
+#define TELOPT_NAOLFD 16 /* negotiate about output LF disposition */
+#define TELOPT_XASCII 17 /* extended ascic character set */
+#define TELOPT_LOGOUT 18 /* force logout */
+#define TELOPT_BM 19 /* byte macro */
+#define TELOPT_DET 20 /* data entry terminal */
+#define TELOPT_SUPDUP 21 /* supdup protocol */
+#define TELOPT_SUPDUPOUTPUT 22 /* supdup output */
+#define TELOPT_SNDLOC 23 /* send location */
+#define TELOPT_TTYPE 24 /* terminal type */
+#define TELOPT_EOR 25 /* end or record */
+#define TELOPT_TUID 26 /* TACACS user identification */
+#define TELOPT_OUTMRK 27 /* output marking */
+#define TELOPT_TTYLOC 28 /* terminal location number */
+#define TELOPT_3270REGIME 29 /* 3270 regime */
+#define TELOPT_X3PAD 30 /* X.3 PAD */
+#define TELOPT_NAWS 31 /* window size */
+#define TELOPT_TSPEED 32 /* terminal speed */
+#define TELOPT_LFLOW 33 /* remote flow control */
+#define TELOPT_LINEMODE 34 /* Linemode option */
+#define TELOPT_XDISPLOC 35 /* X Display Location */
+#define TELOPT_ENVIRON 36 /* Environment opt for Port ID */
+#define TELOPT_AUTHENTICATION 37 /* authentication */
+#define TELOPT_ENCRYPT 38 /* authentication */
+#define TELOPT_NEWENV 39 /* Environment opt for Port ID */
+#define TELOPT_STARTTLS 46 /* Transport Layer Security */
+#define TELOPT_KERMIT 47 /* Telnet KERMIT */
+#define TELOPT_SEND_URL 48 /* Send URL */
+#define TELOPT_EXOPL 255 /* extended-options-list */
+
+/* Inofficial, mud specific telnet options */
+#define TELOPT_MSSP 70 /* Mud Server Status Protocol */
+#define TELOPT_COMPRESS 85 /* Mud Compression Protocol, v.1 */
+#define TELOPT_COMPRESS2 86 /* Mud Compression Protocol, v.2 */
+#define TELOPT_MSP 90 /* Mud Sound Protocol */
+#define TELOPT_MXP 91 /* Mud Extension Protocol */
+#define TELOPT_ZMP 93 /* Zenith Mud Protocol */
+#define TELOPT_MUSHCLIENT 102 /* Mushclient/Aardwolf Protocol */
+#define TELOPT_ATCP 200 /* Achaea Telnet Client Protocol */
+#define TELOPT_GMCP 201 /* General Mud Communication Protocol*/
+
+#define NTELOPTS 256 /* was: (1+TELOPT_NEWENV) */
+
+#ifdef __DRIVER_SOURCE__
+
+#ifdef TELOPTS
+char *telopts[NTELOPTS]
+ = { "BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD"
+ , "NAME", "STATUS", "TIMING MARK", "RCTE"
+ , "NAOL", "NAOP", "NAOCRD", "NAOHTS"
+ , "NAOHTD", "NAOFFD", "NAOVTS", "NAOVTD"
+ , "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO"
+ , "DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT", "SEND LOCATION"
+ , "TERMINAL TYPE", "END OF RECORD", "TACACS UID", "OUTPUT MARKING"
+ , "TTYLOC", "3270 REGIME", "X.3 PAD", "NAWS"
+ , "TSPEED", "LFLOW", "LINEMODE", "XDISPLOC"
+ , "ENVIRON", "AUTH", "ENCRYPT", "NEWENV"
+ , "TELOPT 40", "TELOPT 41", "TELOPT 42", "TELOPT 43"
+ , "TELOPT 44", "TELOPT 45", "STARTTLS", "KERMIT"
+ , "SEND_URL", "TELOPT 49", "TELOPT 50", "TELOPT 51"
+ , "TELOPT 52", "TELOPT 53", "TELOPT 54", "TELOPT 55"
+ , "TELOPT 56", "TELOPT 57", "TELOPT 58", "TELOPT 59"
+ , "TELOPT 60", "TELOPT 61", "TELOPT 62", "TELOPT 63"
+ , "TELOPT 64", "TELOPT 65", "TELOPT 66", "TELOPT 67"
+ , "TELOPT 68", "TELOPT 69", "MSSP", "TELOPT 71"
+ , "TELOPT 72", "TELOPT 73", "TELOPT 74", "TELOPT 75"
+ , "TELOPT 76", "TELOPT 77", "TELOPT 78", "TELOPT 79"
+ , "TELOPT 80", "TELOPT 81", "TELOPT 82", "TELOPT 83"
+ , "TELOPT 84", "MUD COMPRESS", "MUD COMPRESS2", "TELOPT 87"
+ , "TELOPT 88", "TELOPT 89", "MUD SOUND", "MUD EXTENSION"
+ , "TELOPT 92", "ZMP", "TELOPT 94", "TELOPT 95"
+ , "TELOPT 96", "TELOPT 97", "TELOPT 98", "TELOPT 99"
+ , "TELOPT 100", "TELOPT 101", "MUSHCLIENT", "TELOPT 103"
+ , "TELOPT 104", "TELOPT 105", "TELOPT 106", "TELOPT 107"
+ , "TELOPT 108", "TELOPT 109", "TELOPT 110", "TELOPT 111"
+ , "TELOPT 112", "TELOPT 113", "TELOPT 114", "TELOPT 115"
+ , "TELOPT 116", "TELOPT 117", "TELOPT 118", "TELOPT 119"
+ , "TELOPT 120", "TELOPT 121", "TELOPT 122", "TELOPT 123"
+ , "TELOPT 124", "TELOPT 125", "TELOPT 126", "TELOPT 127"
+ , "TELOPT 128", "TELOPT 129", "TELOPT 130", "TELOPT 131"
+ , "TELOPT 132", "TELOPT 133", "TELOPT 134", "TELOPT 135"
+ , "TELOPT 136", "TELOPT 137", "TELOPT 138", "TELOPT 139"
+ , "TELOPT 140", "TELOPT 141", "TELOPT 142", "TELOPT 143"
+ , "TELOPT 144", "TELOPT 145", "TELOPT 146", "TELOPT 147"
+ , "TELOPT 148", "TELOPT 149", "TELOPT 150", "TELOPT 151"
+ , "TELOPT 152", "TELOPT 153", "TELOPT 154", "TELOPT 155"
+ , "TELOPT 156", "TELOPT 157", "TELOPT 158", "TELOPT 159"
+ , "TELOPT 160", "TELOPT 161", "TELOPT 162", "TELOPT 163"
+ , "TELOPT 164", "TELOPT 165", "TELOPT 166", "TELOPT 167"
+ , "TELOPT 168", "TELOPT 169", "TELOPT 170", "TELOPT 171"
+ , "TELOPT 172", "TELOPT 173", "TELOPT 174", "TELOPT 175"
+ , "TELOPT 176", "TELOPT 177", "TELOPT 178", "TELOPT 179"
+ , "TELOPT 180", "TELOPT 181", "TELOPT 182", "TELOPT 183"
+ , "TELOPT 184", "TELOPT 185", "TELOPT 186", "TELOPT 187"
+ , "TELOPT 188", "TELOPT 189", "TELOPT 190", "TELOPT 191"
+ , "TELOPT 192", "TELOPT 193", "TELOPT 194", "TELOPT 195"
+ , "TELOPT 196", "TELOPT 197", "TELOPT 198", "TELOPT 199"
+ , "ATCP", "TELOPT 201", "TELOPT 202", "TELOPT 203"
+ , "TELOPT 204", "TELOPT 205", "TELOPT 206", "TELOPT 207"
+ , "TELOPT 208", "TELOPT 209", "TELOPT 210", "TELOPT 211"
+ , "TELOPT 212", "TELOPT 213", "TELOPT 214", "TELOPT 215"
+ , "TELOPT 216", "TELOPT 217", "TELOPT 218", "TELOPT 219"
+ , "TELOPT 220", "TELOPT 221", "TELOPT 222", "TELOPT 223"
+ , "TELOPT 224", "TELOPT 225", "TELOPT 226", "TELOPT 227"
+ , "TELOPT 228", "TELOPT 229", "TELOPT 230", "TELOPT 231"
+ , "TELOPT 232", "TELOPT 233", "TELOPT 234", "TELOPT 235"
+ , "TELOPT 236", "TELOPT 237", "TELOPT 238", "TELOPT 239"
+ , "TELOPT 240", "TELOPT 241", "TELOPT 242", "TELOPT 243"
+ , "TELOPT 244", "TELOPT 245", "TELOPT 246", "TELOPT 247"
+ , "TELOPT 248", "TELOPT 249", "TELOPT 250", "TELOPT 251"
+ , "TELOPT 252", "TELOPT 253", "TELOPT 254", "EXOPL"
+};
+#endif
+
+#endif /* __DRIVER_SOURCE__ */
+
+/* sub-option qualifiers */
+#define TELQUAL_IS 0 /* option is... */
+#define TELQUAL_SEND 1 /* send option */
+
+/*
+ * LINEMODE suboptions
+ */
+
+#define LM_MODE 1
+#define LM_FORWARDMASK 2
+#define LM_SLC 3
+
+#define MODE_EDIT 0x01
+#define MODE_TRAPSIG 0x02
+#define MODE_ACK 0x04
+
+#define MODE_MASK (MODE_EDIT|MODE_TRAPSIG|MODE_ACK)
+
+/* Not part of protocol, but needed to simplify things... */
+#define MODE_FLOW 0x0100
+#define MODE_ECHO 0x0200
+#define MODE_INBIN 0x0400
+#define MODE_OUTBIN 0x0800
+#define MODE_FORCE 0x1000
+
+#define SLC_SYNCH 1
+#define SLC_BRK 2
+#define SLC_IP 3
+#define SLC_AO 4
+#define SLC_AYT 5
+#define SLC_EOR 6
+#define SLC_ABORT 7
+#define SLC_EOF 8
+#define SLC_SUSP 9
+#define SLC_EC 10
+#define SLC_EL 11
+#define SLC_EW 12
+#define SLC_RP 13
+#define SLC_LNEXT 14
+#define SLC_XON 15
+#define SLC_XOFF 16
+#define SLC_FORW1 17
+#define SLC_FORW2 18
+
+#define NSLC 18
+
+#define SLC_NAMES "0", "SYNCH", "BRK", "IP", "AO", "AYT", "EOR", \
+ "ABORT", "EOF", "SUSP", "EC", "EL", "EW", "RP", \
+ "LNEXT", "XON", "XOFF", "FORW1", "FORW2"
+
+#define SLC_NOSUPPORT 0
+#define SLC_CANTCHANGE 1
+#define SLC_VARIABLE 2
+#define SLC_DEFAULT 3
+#define SLC_LEVELBITS 0x03
+
+#define SLC_FUNC 0
+#define SLC_FLAGS 1
+#define SLC_VALUE 2
+
+#define SLC_ACK 0x80
+#define SLC_FLUSHIN 0x40
+#define SLC_FLUSHOUT 0x20
+
+#endif /* TELNET_H__ */