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- /*
- * Copyright (c) 1988, 1990 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted provided
- * that: (1) source distributions retain this entire copyright notice and
- * comment, and (2) distributions including binaries display the following
- * acknowledgement: ``This product includes software developed by the
- * University of California, Berkeley and its contributors'' in the
- * documentation or other materials provided with the distribution and in
- * all advertising materials mentioning features or use of this software.
- * Neither the name of the University nor the names of its contributors may
- * 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
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)commands.c 5.1 (Berkeley) 9/14/90";
- #endif /* not lint */
-
- #include <sys/types.h>
- #include <string.h>
- #include <sys/socket.h>
- #ifdef AMI_TCP
- #include <bsdsocket.h>
- #else
- #include <ss/socket.h>
- #endif
- #include <netinet/in.h>
-
- #include <signal.h>
- #include <netdb.h>
- #include <ctype.h>
- #ifndef AMI_TCP
- #include <pwd.h>
- #endif
-
- #include <varargs.h>
- #include <arpa/telnet.h>
-
- #include "general.h"
-
- #include "ring.h"
-
- #include "externs.h"
- #include "defines.h"
- #include "types.h"
-
- char *hostname;
- extern char *getenv();
- extern long bytesin;
- extern long bytesout;
- extern FILE *log_file;
-
- #define Ambiguous(s) ((char **)s == &ambiguous)
- static char *ambiguous; /* special return value for command routines */
- static call();
-
- typedef struct {
- char *name; /* command name */
- char *help; /* help string (NULL for no help) */
- int (*handler)(); /* routine which executes command */
- int needconnect; /* Do we need to be connected to execute? */
- } Command;
-
- static char line[256];
- static char saveline[256];
- static int margc;
- static char *margv[20];
-
- /*
- * Various utility routines.
- */
-
-
- char *h_errlist[] = {
- "Error 0",
- "Unknown host", /* 1 HOST_NOT_FOUND */
- "Host name lookup failure", /* 2 TRY_AGAIN */
- "Unknown server error", /* 3 NO_RECOVERY */
- "No address associated with name", /* 4 NO_ADDRESS */
- };
- int h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
-
- int h_errno; /* In some version of SunOS this is necessary */
-
- /*
- * herror --
- * print the error indicated by the h_errno value.
- */
- herror(s)
- char *s;
- {
- if (s && *s) {
- fprintf(stderr, "%s: ", s);
- }
- if ((h_errno < 0) || (h_errno >= h_nerr)) {
- fprintf(stderr, "Unknown error\n");
- } else if (h_errno == 0) {
- #if defined(sun)
- fprintf(stderr, "Host unknown\n");
- #endif /* defined(sun) */
- } else {
- fprintf(stderr, "%s\n", h_errlist[h_errno]);
- }
- }
-
- static void
- makeargv()
- {
- register char *cp, *cp2, c;
- register char **argp = margv;
-
- margc = 0;
- cp = line;
- while (c = *cp) {
- register int inquote = 0;
- while (isspace(c))
- c = *++cp;
- if (c == '\0')
- break;
- *argp++ = cp;
- margc += 1;
- for (cp2 = cp; c != '\0'; c = *++cp) {
- if (inquote) {
- if (c == inquote) {
- inquote = 0;
- continue;
- }
- } else {
- if (c == '\\') {
- if ((c = *++cp) == '\0')
- break;
- } else if (c == '"') {
- inquote = '"';
- continue;
- } else if (c == '\'') {
- inquote = '\'';
- continue;
- } else if (isspace(c))
- break;
- }
- *cp2++ = c;
- }
- *cp2 = '\0';
- if (c == '\0')
- break;
- cp++;
- }
- *argp++ = 0;
- }
-
-
- static char **
- genget(name, table, next)
- char *name; /* name to match */
- char **table; /* name entry in table */
- char **(*next)(); /* routine to return next entry in table */
- {
- register char *p, *q;
- register char **c, **found;
- register int nmatches, longest;
-
- if (name == 0) {
- return 0;
- }
- longest = 0;
- nmatches = 0;
- found = 0;
- for (c = table; (p = *c) != 0; c = (*next)(c)) {
- for (q = name;
- (*q == *p) || (isupper(*q) && tolower(*q) == *p); p++, q++)
- if (*q == 0) /* exact match? */
- return (c);
- if (!*q) { /* the name was a prefix */
- if (q - name > longest) {
- longest = q - name;
- nmatches = 1;
- found = c;
- } else if (q - name == longest)
- nmatches++;
- }
- }
- if (nmatches > 1)
- return &ambiguous;
- return (found);
- }
-
- /*
- * Make a character string into a number.
- *
- * Todo: 1. Could take random integers (12, 0x12, 012, 0b1).
- */
-
- static
- special(s)
- register char *s;
- {
- register char c;
- char b;
-
- switch (*s) {
- case '^':
- b = *++s;
- if (b == '?') {
- c = b | 0x40; /* DEL */
- } else {
- c = b & 0x1f;
- }
- break;
- default:
- c = *s;
- break;
- }
- return c;
- }
-
- /*
- * Construct a control character sequence
- * for a special character.
- */
- static char *
- control(c)
- register cc_t c;
- {
- static char buf[5];
-
- if (c == 0x7f)
- return ("^?");
- if (c == (cc_t)_POSIX_VDISABLE) {
- return "off";
- }
- if ((unsigned int)c >= 0x80) {
- buf[0] = '\\';
- buf[1] = ((c>>6)&07) + '0';
- buf[2] = ((c>>3)&07) + '0';
- buf[3] = (c&07) + '0';
- buf[4] = 0;
- } else if ((unsigned int)c >= 0x20) {
- buf[0] = c;
- buf[1] = 0;
- } else {
- buf[0] = '^';
- buf[1] = '@'+c;
- buf[2] = 0;
- }
- return (buf);
- }
-
-
-
- /*
- * The following are data structures and routines for
- * the "send" command.
- *
- */
-
- struct sendlist {
- char *name; /* How user refers to it (case independent) */
- char *help; /* Help information (0 ==> no help) */
- int (*handler)(); /* Routine to perform (for special ops) */
- int what; /* Character to be sent (<0 ==> special) */
- };
-
- #define SENDQUESTION -1
- #define SENDESCAPE -3
-
- static struct sendlist Sendlist[] = {
- { "ao", "Send Telnet Abort output", 0, AO },
- { "ayt", "Send Telnet 'Are You There'", 0, AYT },
- { "brk", "Send Telnet Break", 0, BREAK },
- { "ec", "Send Telnet Erase Character", 0, EC },
- { "el", "Send Telnet Erase Line", 0, EL },
- { "escape", "Send current escape character", 0, SENDESCAPE },
- { "ga", "Send Telnet 'Go Ahead' sequence", 0, GA },
- { "ip", "Send Telnet Interrupt Process", 0, IP },
- { "nop", "Send Telnet 'No operation'", 0, NOP },
- { "eor", "Send Telnet 'End of Record'", 0, EOR },
- { "abort", "Send Telnet 'Abort Process'", 0, ABORT },
- { "susp", "Send Telnet 'Suspend Process'", 0, SUSP },
- { "eof", "Send Telnet End of File Character", 0, xEOF },
- { "synch", "Perform Telnet 'Synch operation'", dosynch, SYNCH },
- { "getstatus", "Send request for STATUS", get_status, 0 },
- { "?", "Display send options", 0, SENDQUESTION },
- { 0 }
- };
-
- static struct sendlist Sendlist2[] = { /* some synonyms */
- { "break", 0, 0, BREAK },
-
- { "intp", 0, 0, IP },
- { "interrupt", 0, 0, IP },
- { "intr", 0, 0, IP },
-
- { "help", 0, 0, SENDQUESTION },
-
- { 0 }
- };
-
- static char **
- getnextsend(name)
- char *name;
- {
- struct sendlist *c = (struct sendlist *) name;
-
- return (char **) (c+1);
- }
-
- static struct sendlist *
- getsend(name)
- char *name;
- {
- struct sendlist *sl;
-
- if ((sl = (struct sendlist *)
- genget(name, (char **) Sendlist, getnextsend)) != 0) {
- return sl;
- } else {
- return (struct sendlist *)
- genget(name, (char **) Sendlist2, getnextsend);
- }
- }
-
- static
- sendcmd(argc, argv)
- int argc;
- char **argv;
- {
- int what; /* what we are sending this time */
- int count; /* how many bytes we are going to need to send */
- int i;
- int question = 0; /* was at least one argument a question */
- struct sendlist *s; /* pointer to current command */
-
- if (argc < 2) {
- printf("need at least one argument for 'send' command\n");
- printf("'send ?' for help\n");
- return 0;
- }
- /*
- * First, validate all the send arguments.
- * In addition, we see how much space we are going to need, and
- * whether or not we will be doing a "SYNCH" operation (which
- * flushes the network queue).
- */
- count = 0;
- for (i = 1; i < argc; i++) {
- s = getsend(argv[i]);
- if (s == 0) {
- printf("Unknown send argument '%s'\n'send ?' for help.\n",
- argv[i]);
- return 0;
- } else if (Ambiguous(s)) {
- printf("Ambiguous send argument '%s'\n'send ?' for help.\n",
- argv[i]);
- return 0;
- }
- switch (s->what) {
- case SENDQUESTION:
- question = 1;
- break;
- case SENDESCAPE:
- count += 1;
- break;
- case SYNCH:
- count += 2;
- break;
- default:
- count += 2;
- break;
- }
- }
- if (!connected) {
- if (count)
- printf("?Need to be connected first.\n");
- if (question) {
- for (s = Sendlist; s->name; s++)
- if (s->help)
- printf("%-15s %s\n", s->name, s->help);
- } else
- printf("'send ?' for help\n");
- return !question;
- }
- /* Now, do we have enough room? */
- if (NETROOM() < count) {
- printf("There is not enough room in the buffer TO the network\n");
- printf("to process your request. Nothing will be done.\n");
- printf("('send synch' will throw away most data in the network\n");
- printf("buffer, if this might help.)\n");
- return 0;
- }
- /* OK, they are all OK, now go through again and actually send */
- for (i = 1; i < argc; i++) {
- if ((s = getsend(argv[i])) == 0) {
- fprintf(stderr, "Telnet 'send' error - argument disappeared!\n");
- (void) quit();
- /*NOTREACHED*/
- }
- if (s->handler) {
- (*s->handler)(s);
- } else {
- switch (what = s->what) {
- case SYNCH:
- dosynch();
- break;
- case SENDQUESTION:
- for (s = Sendlist; s->name; s++) {
- if (s->help)
- printf("%-15s %s\n", s->name, s->help);
- }
- question = 1;
- break;
- case SENDESCAPE:
- NETADD(escape);
- break;
- default:
- NET2ADD(IAC, what);
- printoption("SENT", "IAC", what);
- break;
- }
- }
- }
- return !question;
- }
-
- /*
- * The following are the routines and data structures referred
- * to by the arguments to the "toggle" command.
- */
-
- static
- lclchars()
- {
- donelclchars = 1;
- return 1;
- }
-
- static
- togdebug()
- {
- if (debug) {
- if (net > 0 &&
- #ifdef AMI_TCP
- setsockopt(net, SOL_SOCKET, SO_DEBUG, 0, 0)
- #else
- SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 0, 0)
- #endif
- < 0)
- perror("setsockopt (SO_DEBUG)");
- } else
- printf("Cannot turn off socket debugging\n");
- return 1;
- }
-
-
- static int
- togcrlf()
- {
- if (crlf) {
- printf("Will send carriage returns as telnet <CR><LF>.\n");
- } else {
- printf("Will send carriage returns as telnet <CR><NUL>.\n");
- }
- return 1;
- }
-
- int binmode;
-
- static int
- togbinary(val)
- int val;
- {
- donebinarytoggle = 1;
-
- if (val >= 0) {
- binmode = val;
- } else {
- if (my_want_state_is_will(TELOPT_BINARY) &&
- my_want_state_is_do(TELOPT_BINARY)) {
- binmode = 1;
- } else if (my_want_state_is_wont(TELOPT_BINARY) &&
- my_want_state_is_dont(TELOPT_BINARY)) {
- binmode = 0;
- }
- val = binmode ? 0 : 1;
- }
-
- if (val == 1) {
- if (my_want_state_is_will(TELOPT_BINARY) &&
- my_want_state_is_do(TELOPT_BINARY)) {
- printf("Already operating in binary mode with remote host.\n");
- } else {
- printf("Negotiating binary mode with remote host.\n");
- tel_enter_binary(3);
- }
- } else {
- if (my_want_state_is_wont(TELOPT_BINARY) &&
- my_want_state_is_dont(TELOPT_BINARY)) {
- printf("Already in network ascii mode with remote host.\n");
- } else {
- printf("Negotiating network ascii mode with remote host.\n");
- tel_leave_binary(3);
- }
- }
- return 1;
- }
-
- static int
- togrbinary(val)
- int val;
- {
- donebinarytoggle = 1;
-
- if (val == -1)
- val = my_want_state_is_do(TELOPT_BINARY) ? 0 : 1;
-
- if (val == 1) {
- if (my_want_state_is_do(TELOPT_BINARY)) {
- printf("Already receiving in binary mode.\n");
- } else {
- printf("Negotiating binary mode on input.\n");
- tel_enter_binary(1);
- }
- } else {
- if (my_want_state_is_dont(TELOPT_BINARY)) {
- printf("Already receiving in network ascii mode.\n");
- } else {
- printf("Negotiating network ascii mode on input.\n");
- tel_leave_binary(1);
- }
- }
- return 1;
- }
-
- static int
- togxbinary(val)
- int val;
- {
- donebinarytoggle = 1;
-
- if (val == -1)
- val = my_want_state_is_will(TELOPT_BINARY) ? 0 : 1;
-
- if (val == 1) {
- if (my_want_state_is_will(TELOPT_BINARY)) {
- printf("Already transmitting in binary mode.\n");
- } else {
- printf("Negotiating binary mode on output.\n");
- tel_enter_binary(2);
- }
- } else {
- if (my_want_state_is_wont(TELOPT_BINARY)) {
- printf("Already transmitting in network ascii mode.\n");
- } else {
- printf("Negotiating network ascii mode on output.\n");
- tel_leave_binary(2);
- }
- }
- return 1;
- }
-
-
- extern int togglehelp();
- extern int slc_check();
-
- struct togglelist {
- char *name; /* name of toggle */
- char *help; /* help message */
- int (*handler)(); /* routine to do actual setting */
- int *variable;
- char *actionexplanation;
- };
-
- static struct togglelist Togglelist[] = {
- { "autoflush",
- "flushing of output when sending interrupt characters",
- 0,
- &autoflush,
- "flush output when sending interrupt characters" },
- { "autosynch",
- "automatic sending of interrupt characters in urgent mode",
- 0,
- &autosynch,
- "send interrupt characters in urgent mode" },
- { "binary",
- "sending and receiving of binary data",
- togbinary,
- 0,
- 0 },
- { "inbinary",
- "receiving of binary data",
- togrbinary,
- 0,
- 0 },
- { "outbinary",
- "sending of binary data",
- togxbinary,
- 0,
- 0 },
- { "crlf",
- "sending carriage returns as telnet <CR><LF>",
- togcrlf,
- &crlf,
- 0 },
- { "crmod",
- "mapping of received carriage returns",
- 0,
- &crmod,
- "map carriage return on output" },
- { "localchars",
- "local recognition of certain control characters",
- lclchars,
- &localchars,
- "recognize certain control characters" },
- { " ", "", 0 }, /* empty line */
- { "debug",
- "debugging",
- togdebug,
- &debug,
- "turn on socket level debugging" },
- { "netdata",
- "printing of hexadecimal network data (debugging)",
- 0,
- &netdata,
- "print hexadecimal representation of network traffic" },
- { "prettydump",
- "output of \"netdata\" to user readable format (debugging)",
- 0,
- &prettydump,
- "print user readable output for \"netdata\"" },
- { "options",
- "viewing of options processing (debugging)",
- 0,
- &showoptions,
- "show option processing" },
- { "?",
- 0,
- togglehelp },
- { "help",
- 0,
- togglehelp },
- { 0 }
- };
-
- static
- togglehelp()
- {
- struct togglelist *c;
-
- for (c = Togglelist; c->name; c++) {
- if (c->help) {
- if (*c->help)
- printf("%-15s toggle %s\n", c->name, c->help);
- else
- printf("\n");
- }
- }
- printf("\n");
- printf("%-15s %s\n", "?", "display help information");
- return 0;
- }
-
- static
- settogglehelp(set)
- int set;
- {
- struct togglelist *c;
-
- for (c = Togglelist; c->name; c++) {
- if (c->help) {
- if (*c->help)
- printf("%-15s %s %s\n", c->name, set ? "enable" : "disable",
- c->help);
- else
- printf("\n");
- }
- }
- }
-
- static char **
- getnexttoggle(name)
- char *name;
- {
- struct togglelist *c = (struct togglelist *) name;
-
- return (char **) (c+1);
- }
-
- static struct togglelist *
- gettoggle(name)
- char *name;
- {
- return (struct togglelist *)
- genget(name, (char **) Togglelist, getnexttoggle);
- }
-
- static
- toggle(argc, argv)
- int argc;
- char *argv[];
- {
- int retval = 1;
- char *name;
- struct togglelist *c;
-
- if (argc < 2) {
- fprintf(stderr,
- "Need an argument to 'toggle' command. 'toggle ?' for help.\n");
- return 0;
- }
- argc--;
- argv++;
- while (argc--) {
- name = *argv++;
- c = gettoggle(name);
- if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('toggle ?' for help).\n",
- name);
- return 0;
- } else if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('toggle ?' for help).\n",
- name);
- return 0;
- } else {
- if (c->variable) {
- *c->variable = !*c->variable; /* invert it */
- if (c->actionexplanation) {
- printf("%s %s.\n", *c->variable? "Will" : "Won't",
- c->actionexplanation);
- }
- }
- if (c->handler) {
- retval &= (*c->handler)(-1);
- }
- }
- }
- return retval;
- }
-
- /*
- * The following perform the "set" command.
- */
-
- struct setlist {
- char *name; /* name */
- char *help; /* help information */
- void (*handler)();
- cc_t *charp; /* where it is located at */
- };
-
- static struct setlist Setlist[] = {
- { "escape", "character to escape back to telnet command mode", 0, &escape },
- { "tracefile", "file to write trace information to", SetNetTrace, (cc_t *)NetTraceFile},
- { " ", "" },
- { 0 }
- };
-
- static char **
- getnextset(name)
- char *name;
- {
- struct setlist *c = (struct setlist *)name;
-
- return (char **) (c+1);
- }
-
- static struct setlist *
- getset(name)
- char *name;
- {
- return (struct setlist *) genget(name, (char **) Setlist, getnextset);
- }
-
- set_escape_char(s)
- char *s;
- {
- escape = (s && *s) ? special(s) : _POSIX_VDISABLE;
- printf("escape character is '%s'.\n", control(escape));
- }
-
- static
- setcmd(argc, argv)
- int argc;
- char *argv[];
- {
- int value;
- struct setlist *ct;
- struct togglelist *c;
-
- if (argc < 2 || argc > 3) {
- printf("Format is 'set Name Value'\n'set ?' for help.\n");
- return 0;
- }
- if ((argc == 2) &&
- ((!strcmp(argv[1], "?")) || (!strcmp(argv[1], "help")))) {
- for (ct = Setlist; ct->name; ct++)
- printf("%-15s %s\n", ct->name, ct->help);
- printf("\n");
- settogglehelp(1);
- printf("%-15s %s\n", "?", "display help information");
- return 0;
- }
-
- ct = getset(argv[1]);
- if (ct == 0) {
- c = gettoggle(argv[1]);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('set ?' for help).\n",
- argv[1]);
- return 0;
- } else if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n",
- argv[1]);
- return 0;
- }
- if (c->variable) {
- if ((argc == 2) || (strcmp("on", argv[2]) == 0))
- *c->variable = 1;
- else if (strcmp("off", argv[2]) == 0)
- *c->variable = 0;
- else {
- printf("Format is 'set togglename [on|off]'\n'set ?' for help.\n");
- return 0;
- }
- if (c->actionexplanation) {
- printf("%s %s.\n", *c->variable? "Will" : "Won't",
- c->actionexplanation);
- }
- }
- if (c->handler)
- (*c->handler)(1);
- } else if (argc != 3) {
- printf("Format is 'set Name Value'\n'set ?' for help.\n");
- return 0;
- } else if (Ambiguous(ct)) {
- fprintf(stderr, "'%s': ambiguous argument ('set ?' for help).\n",
- argv[1]);
- return 0;
- } else if (ct->handler) {
- (*ct->handler)(argv[2]);
- printf("%s set to \"%s\".\n", ct->name, (char *)ct->charp);
- } else {
- if (strcmp("off", argv[2])) {
- value = special(argv[2]);
- } else {
- value = _POSIX_VDISABLE;
- }
- *(ct->charp) = (cc_t)value;
- printf("%s character is '%s'.\n", ct->name, control(*(ct->charp)));
- }
- slc_check();
- return 1;
- }
-
- static
- unsetcmd(argc, argv)
- int argc;
- char *argv[];
- {
- struct setlist *ct;
- struct togglelist *c;
- register char *name;
-
- if (argc < 2) {
- fprintf(stderr,
- "Need an argument to 'unset' command. 'unset ?' for help.\n");
- return 0;
- }
- if ((!strcmp(argv[1], "?")) || (!strcmp(argv[1], "help"))) {
- for (ct = Setlist; ct->name; ct++)
- printf("%-15s %s\n", ct->name, ct->help);
- printf("\n");
- settogglehelp(0);
- printf("%-15s %s\n", "?", "display help information");
- return 0;
- }
-
- argc--;
- argv++;
- while (argc--) {
- name = *argv++;
- ct = getset(name);
- if (ct == 0) {
- c = gettoggle(name);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('unset ?' for help).\n",
- name);
- return 0;
- } else if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n",
- name);
- return 0;
- }
- if (c->variable) {
- *c->variable = 0;
- if (c->actionexplanation) {
- printf("%s %s.\n", *c->variable? "Will" : "Won't",
- c->actionexplanation);
- }
- }
- if (c->handler)
- (*c->handler)(0);
- } else if (Ambiguous(ct)) {
- fprintf(stderr, "'%s': ambiguous argument ('unset ?' for help).\n",
- name);
- return 0;
- } else if (ct->handler) {
- (*ct->handler)(0);
- printf("%s reset to \"%s\".\n", ct->name, (char *)ct->charp);
- } else {
- *(ct->charp) = _POSIX_VDISABLE;
- printf("%s character is '%s'.\n", ct->name, control(*(ct->charp)));
- }
- }
- return 1;
- }
-
- /*
- * The following are the data structures and routines for the
- * 'mode' command.
- */
-
- static
- dolinemode()
- {
- send_will(TELOPT_LINEMODE, 1);
- send_dont(TELOPT_ECHO, 1);
- return 1;
- }
-
- static
- docharmode()
- {
- send_wont(TELOPT_LINEMODE, 1);
- send_do(TELOPT_ECHO, 1);
- return 1;
- }
-
- setmode(bit)
- {
- return dolmmode(bit, 1);
- }
-
- clearmode(bit)
- {
- return dolmmode(bit, 0);
- }
-
- dolmmode(bit, on)
- int bit, on;
- {
- char c;
- extern int linemode;
-
- if (my_want_state_is_wont(TELOPT_LINEMODE)) {
- printf("?Need to have LINEMODE option enabled first.\n");
- printf("'mode ?' for help.\n");
- return 0;
- }
-
- if (on)
- c = (linemode | bit);
- else
- c = (linemode & ~bit);
- lm_mode(&c, 1, 1);
- return 1;
- }
-
- struct modelist {
- char *name; /* command name */
- char *help; /* help string */
- int (*handler)(); /* routine which executes command */
- int needconnect; /* Do we need to be connected to execute? */
- int arg1;
- };
-
- extern int modehelp();
-
- static struct modelist ModeList[] = {
- { "character", "Disable LINEMODE option", docharmode, 1 },
- { "line", "Enable LINEMODE option", dolinemode, 1 },
- { "", "", 0 },
- { "", "These require the LINEMODE option to be enabled", 0 },
- { "isig", "Enable signal trapping", setmode, 1, MODE_TRAPSIG },
- { "+isig", 0, setmode, 1, MODE_TRAPSIG },
- { "-isig", "Disable signal trapping", clearmode, 1, MODE_TRAPSIG },
- { "edit", "Enable character editing", setmode, 1, MODE_EDIT },
- { "+edit", 0, setmode, 1, MODE_EDIT },
- { "-edit", "Disable character editing", clearmode, 1, MODE_EDIT },
- { "softtabs", "Enable tab expansion", setmode, 1, MODE_SOFT_TAB },
- { "+softtabs", 0, setmode, 1, MODE_SOFT_TAB },
- { "-softtabs", "Disable character editing", clearmode, 1, MODE_SOFT_TAB },
- { "litecho", "Enable literal character echo", setmode, 1, MODE_LIT_ECHO },
- { "+litecho", 0, setmode, 1, MODE_LIT_ECHO },
- { "-litecho", "Disable literal character echo", clearmode, 1, MODE_LIT_ECHO },
- { "help", 0, modehelp, 0 },
- { "", "", 0 },
- { "?", "Print help information", modehelp, 0 },
- { 0 },
- };
-
- static char **
- getnextmode(name)
- char *name;
- {
- return (char **) (((struct modelist *)name)+1);
- }
-
- static struct modelist *
- getmodecmd(name)
- char *name;
- {
- return (struct modelist *) genget(name, (char **) ModeList, getnextmode);
- }
-
- modehelp()
- {
- struct modelist *mt;
-
- printf("format is: 'mode Mode', where 'Mode' is one of:\n\n");
- for (mt = ModeList; mt->name; mt++) {
- if (mt->help) {
- if (*mt->help)
- printf("%-15s %s\n", mt->name, mt->help);
- else
- printf("\n");
- }
- }
- return 0;
- }
-
- static
- modecmd(argc, argv)
- int argc;
- char *argv[];
- {
- struct modelist *mt;
-
- if (argc != 2) {
- printf("'mode' command requires an argument\n");
- printf("'mode ?' for help.\n");
- } else if ((mt = getmodecmd(argv[1])) == 0) {
- fprintf(stderr, "Unknown mode '%s' ('mode ?' for help).\n", argv[1]);
- } else if (Ambiguous(mt)) {
- fprintf(stderr, "Ambiguous mode '%s' ('mode ?' for help).\n", argv[1]);
- } else if (mt->needconnect && !connected) {
- printf("?Need to be connected first.\n");
- printf("'mode ?' for help.\n");
- } else if (mt->handler) {
- return (*mt->handler)(mt->arg1);
- }
- return 0;
- }
-
- /*
- * The following data structures and routines implement the
- * "display" command.
- */
-
- static
- display(argc, argv)
- int argc;
- char *argv[];
- {
- #define dotog(tl) if (tl->variable && tl->actionexplanation) { \
- if (*tl->variable) { \
- printf("will"); \
- } else { \
- printf("won't"); \
- } \
- printf(" %s.\n", tl->actionexplanation); \
- }
-
- #define doset(sl) if (sl->name && *sl->name != ' ') { \
- if (sl->handler == 0) \
- printf("%-15s [%s]\n", sl->name, control(*sl->charp)); \
- else \
- printf("%-15s \"%s\"\n", sl->name, (char *)sl->charp); \
- }
-
- struct togglelist *tl;
- struct setlist *sl;
-
- if (argc == 1) {
- for (tl = Togglelist; tl->name; tl++) {
- dotog(tl);
- }
- printf("\n");
- for (sl = Setlist; sl->name; sl++) {
- doset(sl);
- }
- } else {
- int i;
-
- for (i = 1; i < argc; i++) {
- sl = getset(argv[i]);
- tl = gettoggle(argv[i]);
- if (Ambiguous(sl) || Ambiguous(tl)) {
- printf("?Ambiguous argument '%s'.\n", argv[i]);
- return 0;
- } else if (!sl && !tl) {
- printf("?Unknown argument '%s'.\n", argv[i]);
- return 0;
- } else {
- if (tl) {
- dotog(tl);
- }
- if (sl) {
- doset(sl);
- }
- }
- }
- }
- /*@*/optionstatus();
- return 1;
- #undef doset
- #undef dotog
- }
-
- /*
- * The following are the data structures, and many of the routines,
- * relating to command processing.
- */
-
- /*
- * Set the escape character.
- */
- static
- setescape(argc, argv)
- int argc;
- char *argv[];
- {
- register char *arg;
- char buf[50];
-
- printf(
- "Deprecated usage - please use 'set escape%s%s' in the future.\n",
- (argc > 2)? " ":"", (argc > 2)? argv[1]: "");
- if (argc > 2)
- arg = argv[1];
- else {
- printf("new escape character: ");
- (void) gets(buf);
- arg = buf;
- }
- if (arg[0] != '\0')
- escape = arg[0];
- printf("Escape character is '%s'.\n", control(escape));
- (void) fflush(stdout);
- return 1;
- }
-
- /*VARARGS*/
- static
- togcrmod()
- {
- crmod = !crmod;
- printf("Deprecated usage - please use 'toggle crmod' in the future.\n");
- printf("%s map carriage return on output.\n", crmod ? "Will" : "Won't");
- (void) fflush(stdout);
- return 1;
- }
-
- /*VARARGS*/
- suspend()
- {
- return 1;
- }
-
- /*VARARGS*/
- static
- bye(argc, argv)
- int argc; /* Number of arguments */
- char *argv[]; /* arguments */
- {
- if (connected) {
- (void) shutdown(net, 2);
- printf("Connection closed.\n");
- (void) NetClose(net);
- fprintf(log_file,"%s %d\n",hostname,bytesin+bytesout);
- connected = 0;
- /* reset options */
- tninit();
- }
- if ((argc != 2) || (strcmp(argv[1], "fromquit") != 0)) {
- longjmp(toplevel, 1);
- /* NOTREACHED */
- }
- return 1; /* Keep lint, etc., happy */
- }
-
- /*VARARGS*/
- quit()
- {
- (void) call(bye, "bye", "fromquit", 0);
- Exit(0);
- /*NOTREACHED*/
- }
-
- /*
- * The SLC command.
- */
-
- struct slclist {
- char *name;
- char *help;
- int (*handler)();
- int arg;
- };
-
- extern int slc_help();
- extern int slc_mode_export(), slc_mode_import(), slcstate();
-
- struct slclist SlcList[] = {
- { "export", "Use local special character definitions",
- slc_mode_export, 0 },
- { "import", "Use remote special character definitions",
- slc_mode_import, 1 },
- { "check", "Verify remote special character definitions",
- slc_mode_import, 0 },
- { "help", 0, slc_help, 0 },
- { "?", "Print help information", slc_help, 0 },
- { 0 },
- };
-
- static
- slc_help()
- {
- struct slclist *c;
-
- for (c = SlcList; c->name; c++) {
- if (c->help) {
- if (*c->help)
- printf("%-15s %s\n", c->name, c->help);
- else
- printf("\n");
- }
- }
- }
-
- static char **
- getnextslc(name)
- char *name;
- {
- return (char **)(((struct slclist *)name)+1);
- }
-
- static struct slclist *
- getslc(name)
- char *name;
- {
- return (struct slclist *)genget(name, (char **) SlcList, getnextslc);
- }
-
- static
- slccmd(argc, argv)
- int argc;
- char *argv[];
- {
- struct slclist *c;
-
- if (argc != 2) {
- fprintf(stderr,
- "Need an argument to 'slc' command. 'slc ?' for help.\n");
- return 0;
- }
- c = getslc(argv[1]);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('slc ?' for help).\n",
- argv[1]);
- return 0;
- }
- if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('slc ?' for help).\n",
- argv[1]);
- return 0;
- }
- (*c->handler)(c->arg);
- slcstate();
- return 1;
- }
-
- /*
- * The ENVIRON command.
- */
-
- struct envlist {
- char *name;
- char *help;
- int (*handler)();
- int narg;
- };
-
- extern struct env_lst *env_define();
- extern int env_undefine();
- extern int env_export(), env_unexport();
- extern int env_send(), env_list(), env_help();
-
- struct envlist EnvList[] = {
- { "define", "Define an environment variable",
- (int (*)())env_define, 2 },
- { "undefine", "Undefine an environment variable",
- env_undefine, 1 },
- { "export", "Mark an environment variable for automatic export",
- env_export, 1 },
- { "unexport", "Dont mark an environment variable for automatic export",
- env_unexport, 1 },
- { "send", "Send an environment variable", env_send, 1 },
- { "list", "List the current environment variables",
- env_list, 0 },
- { "help", 0, env_help, 0 },
- { "?", "Print help information", env_help, 0 },
- { 0 },
- };
-
- static
- env_help()
- {
- struct envlist *c;
-
- for (c = EnvList; c->name; c++) {
- if (c->help) {
- if (*c->help)
- printf("%-15s %s\n", c->name, c->help);
- else
- printf("\n");
- }
- }
- }
-
- static char **
- getnextenv(name)
- char *name;
- {
- return (char **)(((struct envlist *)name)+1);
- }
-
- static struct envlist *
- getenvcmd(name)
- char *name;
- {
- return (struct envlist *)genget(name, (char **) EnvList, getnextenv);
- }
-
- env_cmd(argc, argv)
- int argc;
- char *argv[];
- {
- struct envlist *c;
-
- if (argc < 2) {
- fprintf(stderr,
- "Need an argument to 'environ' command. 'environ ?' for help.\n");
- return 0;
- }
- c = getenvcmd(argv[1]);
- if (c == 0) {
- fprintf(stderr, "'%s': unknown argument ('environ ?' for help).\n",
- argv[1]);
- return 0;
- }
- if (Ambiguous(c)) {
- fprintf(stderr, "'%s': ambiguous argument ('environ ?' for help).\n",
- argv[1]);
- return 0;
- }
- if (c->narg + 2 != argc) {
- fprintf(stderr,
- "Need %s%d argument%s to 'environ %s' command. 'environ ?' for help.\n",
- c->narg < argc + 2 ? "only " : "",
- c->narg, c->narg == 1 ? "" : "s", c->name);
- return 0;
- }
- (void)(*c->handler)(argv[2], argv[3]);
- return 1;
- }
-
- struct env_lst {
- struct env_lst *next; /* pointer to next structure */
- struct env_lst *prev; /* pointer to next structure */
- char *var; /* pointer to variable name */
- char *value; /* pointer to varialbe value */
- int export; /* 1 -> export with default list of variables */
- };
-
- struct env_lst envlisthead;
-
- struct env_lst *
- env_find(var)
- char *var;
- {
- register struct env_lst *ep;
-
- for (ep = envlisthead.next; ep; ep = ep->next) {
- if (strcmp(ep->var, var) == 0)
- return(ep);
- }
- return(NULL);
- }
-
- env_init()
- {
- register char **epp, *cp;
- register struct env_lst *ep;
-
- /*
- * If USER is not defined, but LOGNAME is, then add
- * USER with the value from LOGNAME. By default, we
- * don't export the USER variable.
- */
- if ((env_find("USER") == NULL) && (ep = env_find("LOGNAME"))) {
- env_define("USER", ep->value);
- env_unexport("USER");
- }
- env_export("DISPLAY");
- env_export("PRINTER");
- }
-
- struct env_lst *
- env_define(var, value)
- char *var, *value;
- {
- register struct env_lst *ep;
- extern char *strdup();
-
- if (ep = env_find(var)) {
- if (ep->var)
- free(ep->var);
- if (ep->value)
- free(ep->value);
- } else {
- ep = (struct env_lst *)malloc(sizeof(struct env_lst));
- ep->next = envlisthead.next;
- envlisthead.next = ep;
- ep->prev = &envlisthead;
- if (ep->next)
- ep->next->prev = ep;
- }
- ep->export = 1;
- ep->var = strdup(var);
- ep->value = strdup(value);
- return(ep);
- }
-
- env_undefine(var)
- char *var;
- {
- register struct env_lst *ep;
-
- if (ep = env_find(var)) {
- ep->prev->next = ep->next;
- if (ep->next)
- ep->next->prev = ep->prev;
- if (ep->var)
- free(ep->var);
- if (ep->value)
- free(ep->value);
- free(ep);
- }
- }
-
- env_export(var)
- char *var;
- {
- register struct env_lst *ep;
-
- if (ep = env_find(var))
- ep->export = 1;
- }
-
- env_unexport(var)
- char *var;
- {
- register struct env_lst *ep;
-
- if (ep = env_find(var))
- ep->export = 0;
- }
-
- env_send(var)
- char *var;
- {
- register struct env_lst *ep;
-
- if (my_state_is_wont(TELOPT_ENVIRON)) {
- fprintf(stderr,
- "Cannot send '%s': Telnet ENVIRON option not enabled\n",
- var);
- return;
- }
- ep = env_find(var);
- if (ep == 0) {
- fprintf(stderr, "Cannot send '%s': variable not defined\n",
- var);
- return;
- }
- env_opt_start_info();
- env_opt_add(ep->var);
- env_opt_end(0);
- }
-
- env_list()
- {
- register struct env_lst *ep;
-
- for (ep = envlisthead.next; ep; ep = ep->next) {
- printf("%c %-20s %s\n", ep->export ? '*' : ' ',
- ep->var, ep->value);
- }
- }
-
- char *
- env_default(init)
- {
- static struct env_lst *nep = NULL;
-
- if (init) {
- nep = &envlisthead;
- return;
- }
- if (nep) {
- while (nep = nep->next) {
- if (nep->export)
- return(nep->var);
- }
- }
- return(NULL);
- }
-
- char *
- env_getvalue(var)
- char *var;
- {
- register struct env_lst *ep;
-
- if (ep = env_find(var))
- return(ep->value);
- return(NULL);
- }
-
- /*
- * Print status about the connection.
- */
- /*ARGSUSED*/
- static
- status(argc, argv)
- int argc;
- char *argv[];
- {
- if (connected) {
- printf("Connected to %s.\n", hostname);
- if ((argc < 2) || strcmp(argv[1], "notmuch")) {
- int mode = getconnmode();
-
- if (my_want_state_is_will(TELOPT_LINEMODE)) {
- printf("Operating with LINEMODE option\n");
- printf("%s line editing\n", (mode&MODE_EDIT) ? "Local" : "No");
- printf("%s catching of signals\n",
- (mode&MODE_TRAPSIG) ? "Local" : "No");
- slcstate();
- } else {
- printf("Operating in single character mode\n");
- if (localchars)
- printf("Catching signals locally\n");
- }
- printf("%s character echo\n", (mode&MODE_ECHO) ? "Local" : "Remote");
- if (my_want_state_is_will(TELOPT_LFLOW))
- printf("%s flow control\n", (mode&MODE_FLOW) ? "Local" : "No");
- }
- } else {
- printf("No connection.\n");
- }
- printf("Escape character is '%s'.\n", control(escape));
- (void) fflush(stdout);
- return 1;
- }
-
-
- extern int autologin;
-
- int
- tn(argc, argv)
- int argc;
- char *argv[];
- {
- register struct hostent *host = 0;
- struct sockaddr_in sin;
- struct servent *sp = 0;
- static char hnamebuf[32];
- unsigned long temp, inet_addr();
- extern char *inet_ntoa();
- #if defined(SRCRT) && defined(IPPROTO_IP)
- char *srp = 0, *strrchr();
- unsigned long sourceroute(), srlen;
- #endif
- char *cmd, *hostp = 0, *portp = 0, *user = 0;
-
- /* clear the socket address prior to use */
- bzero((char *)&sin, sizeof(sin));
-
- if (connected) {
- printf("?Already connected to %s\n", hostname);
- return 0;
- }
- if (argc < 2) {
- (void) strcpy(line, "Connect ");
- printf("(to) ");
- (void) gets(&line[strlen(line)]);
- makeargv();
- argc = margc;
- argv = margv;
- }
- cmd = *argv;
- --argc; ++argv;
- while (argc) {
- if (strcmp(*argv, "-l") == 0) {
- --argc; ++argv;
- if (argc == 0)
- goto usage;
- user = *argv++;
- --argc;
- continue;
- }
- if (strcmp(*argv, "-a") == 0) {
- --argc; ++argv;
- autologin = 1;
- continue;
- }
- if (hostp == 0) {
- hostp = *argv++;
- --argc;
- continue;
- }
- if (portp == 0) {
- portp = *argv++;
- --argc;
- continue;
- }
- usage:
- printf("usage: %s [-l user] [-a] host-name [port]\n", cmd);
- return 0;
- }
- #if defined(SRCRT) && defined(IPPROTO_IP)
- if (hostp[0] == '@' || hostp[0] == '!') {
- if ((hostname = strrchr(hostp, ':')) == NULL)
- hostname = strrchr(hostp, '@');
- hostname++;
- srp = 0;
- temp = sourceroute(hostp, &srp, &srlen);
- if (temp == 0) {
- herror(srp);
- return 0;
- } else if (temp == -1) {
- printf("Bad source route option: %s\n", hostp);
- return 0;
- } else {
- sin.sin_addr.s_addr = temp;
- sin.sin_family = AF_INET;
- }
- } else {
- #endif
- temp = inet_addr(hostp);
- if (temp != (unsigned long) -1) {
- sin.sin_addr.s_addr = temp;
- sin.sin_family = AF_INET;
- (void) strcpy(hnamebuf, hostp);
- hostname = hnamebuf;
- } else {
- host = gethostbyname(hostp);
- if (host) {
- sin.sin_family = host->h_addrtype;
- memcpy((caddr_t)&sin.sin_addr, host->h_addr, host->h_length);
- hostname = host->h_name;
- } else {
- herror(hostp);
- return 0;
- }
- }
- #if defined(SRCRT) && defined(IPPROTO_IP)
- }
- #endif
- if (portp) {
- if (*portp == '-') {
- portp++;
- telnetport = 1;
- } else
- telnetport = 0;
- sin.sin_port = atoi(portp);
- if (sin.sin_port == 0) {
- sp = getservbyname(portp, "tcp");
- if (sp)
- sin.sin_port = sp->s_port;
- else {
- printf("%s: bad port number\n", portp);
- return 0;
- }
- } else {
- #if !defined(htons)
- u_short htons();
- #endif /* !defined(htons) */
- sin.sin_port = htons(sin.sin_port);
- }
- } else {
- if (sp == 0) {
- sp = getservbyname("telnet", "tcp");
- if (sp == 0) {
- fprintf(stderr, "telnet: tcp/telnet: unknown service\n");
- return 0;
- }
- sin.sin_port = sp->s_port;
- }
- telnetport = 1;
- }
- bytesin = 0;
- bytesout = 0;
- #ifdef AMI_TCP
- printf("Trying %s...\n", inet_ntoa(sin.sin_addr));
- #else
- printf("Trying %s...\n", inet_ntoa(sin.sin_addr.s_addr));
- #endif
- do {
- net = socket(AF_INET, SOCK_STREAM, 0);
- if (net < 0) {
- perror("telnet: socket");
- return 0;
- }
- #if defined(SRCRT) && defined(IPPROTO_IP)
- if (srp && setsockopt(net, IPPROTO_IP, IP_OPTIONS, (char *)srp, srlen) < 0)
- perror("setsockopt (IP_OPTIONS)");
- #endif
-
- if (debug &&
- #ifdef AMI_TCP
- setsockopt(net, SOL_SOCKET, SO_DEBUG, &debug,sizeof(debug))
- #else
- SetSockOpt(net, SOL_SOCKET, SO_DEBUG, 1)
- #endif
- < 0) {
- perror("setsockopt (SO_DEBUG)");
- }
-
- if (connect(net, (struct sockaddr *)&sin, sizeof (sin)) < 0) {
- perror("telnet: Unable to connect to remote host");
- return 0;
- }
- connected++;
- } while (connected == 0);
- cmdrc(hostp, hostname);
- if (autologin && user == NULL) {
- #ifdef AMI_TCP
- user = getenv("USER");
- #else
- struct passwd *pw;
- if (user == NULL ||
- (pw = getpwnam(user)) && pw->pw_uid != getuid()) {
- if (pw = getpwuid(getuid()))
- user = pw->pw_name;
- else
- user = NULL;
- }
- #endif
- }
- if (user) {
- env_define("USER", user);
- env_export("USER");
- }
- (void) call(status, "status", "notmuch", 0);
- if (setjmp(peerdied) == 0)
- telnet();
- (void) NetClose(net);
- fprintf(log_file,"%s %d\n",hostname,bytesin+bytesout);
- ExitString("Connection closed by foreign host.\n",1);
- /*NOTREACHED*/
- }
-
- controld()
-
- {
- NETADD(4);
- }
-
- #define HELPINDENT (sizeof ("connect"))
-
- static char
- openhelp[] = "connect to a site",
- closehelp[] = "close current connection",
- quithelp[] = "exit telnet",
- statushelp[] = "print status information",
- helphelp[] = "print help information",
- sendhelp[] = "transmit special characters ('send ?' for more)",
- sethelp[] = "set operating parameters ('set ?' for more)",
- unsethelp[] = "unset operating parameters ('unset ?' for more)",
- togglestring[] ="toggle operating parameters ('toggle ?' for more)",
- slchelp[] = "change state of special charaters ('slc ?' for more)",
- displayhelp[] = "display operating parameters",
- controlhelp[] = "send a control-D to host",
- envhelp[] = "change environment variables ('environ ?' for more)",
- modestring[] = "try to enter line or character mode ('mode ?' for more)";
-
- extern int help();
-
- static Command cmdtab[] = {
- { "close", closehelp, bye, 1 },
- { "^d", controlhelp, controld, 1 },
- { "display", displayhelp, display, 0 },
- { "mode", modestring, modecmd, 0 },
- { "open", openhelp, tn, 0 },
- { "quit", quithelp, quit, 0 },
- { "send", sendhelp, sendcmd, 0 },
- { "set", sethelp, setcmd, 0 },
- { "unset", unsethelp, unsetcmd, 0 },
- { "status", statushelp, status, 0 },
- { "toggle", togglestring, toggle, 0 },
- { "slc", slchelp, slccmd, 0 },
- { "environ", envhelp, env_cmd, 0 },
- { "?", helphelp, help, 0 },
- 0
- };
-
- static char crmodhelp[] = "deprecated command -- use 'toggle crmod' instead";
- static char escapehelp[] = "deprecated command -- use 'set escape' instead";
-
- static Command cmdtab2[] = {
- { "help", 0, help, 0 },
- { "escape", escapehelp, setescape, 0 },
- { "crmod", crmodhelp, togcrmod, 0 },
- 0
- };
-
-
- /*
- * Call routine with argc, argv set from args (terminated by 0).
- */
-
- /*VARARGS1*/
- static
- call(va_alist)
- va_dcl
- {
- va_list ap;
- typedef int (*intrtn_t)();
- intrtn_t routine;
- char *args[100];
- int argno = 0;
-
- va_start(ap);
- routine = (va_arg(ap, intrtn_t));
- while ((args[argno++] = va_arg(ap, char *)) != 0) {
- ;
- }
- va_end(ap);
- return (*routine)(argno-1, args);
- }
-
-
- static char **
- getnextcmd(name)
- char *name;
- {
- Command *c = (Command *) name;
-
- return (char **) (c+1);
- }
-
- static Command *
- getcmd(name)
- char *name;
- {
- Command *cm;
-
- if ((cm = (Command *) genget(name, (char **) cmdtab, getnextcmd)) != 0) {
- return cm;
- } else {
- return (Command *) genget(name, (char **) cmdtab2, getnextcmd);
- }
- }
-
- void
- command(top, tbuf, cnt)
- int top;
- char *tbuf;
- int cnt;
- {
- register Command *c;
-
- setcommandmode();
- if (!top) {
- putchar('\n');
- }
- for (;;) {
- printf("%s> ", prompt);
- if (tbuf) {
- register char *cp;
- cp = line;
- while (cnt > 0 && (*cp++ = *tbuf++) != '\n')
- cnt--;
- tbuf = 0;
- if (cp == line || *--cp != '\n' || cp == line)
- goto getline;
- *cp = '\0';
- printf("%s\n", line);
- } else {
- getline:
- if (gets(line) == NULL) {
- if (feof(stdin) || ferror(stdin)) {
- (void) quit();
- /*NOTREACHED*/
- }
- break;
- }
- }
- if (line[0] == 0)
- break;
- makeargv();
- if (margv[0] == 0) {
- break;
- }
- c = getcmd(margv[0]);
- if (Ambiguous(c)) {
- printf("?Ambiguous command\n");
- continue;
- }
- if (c == 0) {
- printf("?Invalid command\n");
- continue;
- }
- if (c->needconnect && !connected) {
- printf("?Need to be connected first.\n");
- continue;
- }
- if ((*c->handler)(margc, margv)) {
- break;
- }
- }
- if (!top) {
- if (!connected) {
- longjmp(toplevel, 1);
- /*NOTREACHED*/
- }
- setconnmode(0);
- }
- }
-
- /*
- * Help command.
- */
- static
- help(argc, argv)
- int argc;
- char *argv[];
- {
- register Command *c;
-
- if (argc == 1) {
- printf("Commands may be abbreviated. Commands are:\n\n");
- for (c = cmdtab; c->name; c++)
- if (c->help) {
- printf("%-*s\t%s\n", HELPINDENT, c->name,
- c->help);
- }
- return 0;
- }
- while (--argc > 0) {
- register char *arg;
- arg = *++argv;
- c = getcmd(arg);
- if (Ambiguous(c))
- printf("?Ambiguous help command %s\n", arg);
- else if (c == (Command *)0)
- printf("?Invalid help command %s\n", arg);
- else
- printf("%s\n", c->help);
- }
- return 0;
- }
-
- static char *rcname = 0;
- static char rcbuf[128];
-
- cmdrc(m1, m2)
- char *m1, *m2;
- {
- register Command *c;
- FILE *rcfile;
- int gotmachine = 0;
- int l1 = strlen(m1);
- int l2 = strlen(m2);
- char m1save[64];
-
- strcpy(m1save, m1);
- m1 = m1save;
-
- if (rcname == 0) {
- rcname = getenv("HOME");
- if (rcname)
- strcpy(rcbuf, rcname);
- else
- rcbuf[0] = '\0';
- strcat(rcbuf, "/.telnetrc");
- rcname = rcbuf;
- }
-
- if ((rcfile = fopen(rcname, "r")) == 0) {
- return;
- }
-
- for (;;) {
- if (fgets(line, sizeof(line), rcfile) == NULL)
- break;
- if (line[0] == 0)
- break;
- if (line[0] == '#')
- continue;
- if (gotmachine == 0) {
- if (isspace(line[0]))
- continue;
- if (strncasecmp(line, m1, l1) == 0)
- strncpy(line, &line[l1], sizeof(line) - l1);
- else if (strncasecmp(line, m2, l2) == 0)
- strncpy(line, &line[l2], sizeof(line) - l2);
- else
- continue;
- gotmachine = 1;
- } else {
- if (!isspace(line[0])) {
- gotmachine = 0;
- continue;
- }
- }
- makeargv();
- if (margv[0] == 0)
- continue;
- c = getcmd(margv[0]);
- if (Ambiguous(c)) {
- printf("?Ambiguous command: %s\n", margv[0]);
- continue;
- }
- if (c == 0) {
- printf("?Invalid command: %s\n", margv[0]);
- continue;
- }
- /*
- * This should never happen...
- */
- if (c->needconnect && !connected) {
- printf("?Need to be connected first for %s.\n", margv[0]);
- continue;
- }
- (*c->handler)(margc, margv);
- }
- fclose(rcfile);
- }
-
- #if defined(SRCRT) && defined(IPPROTO_IP)
-
- /*
- * Source route is handed in as
- * [!]@hop1@hop2...[@|:]dst
- * If the leading ! is present, it is a
- * strict source route, otherwise it is
- * assmed to be a loose source route.
- *
- * We fill in the source route option as
- * hop1,hop2,hop3...dest
- * and return a pointer to hop1, which will
- * be the address to connect() to.
- *
- * Arguments:
- * arg: pointer to route list to decipher
- *
- * cpp: If *cpp is not equal to NULL, this is a
- * pointer to a pointer to a character array
- * that should be filled in with the option.
- *
- * lenp: pointer to an integer that contains the
- * length of *cpp if *cpp != NULL.
- *
- * Return values:
- *
- * Returns the address of the host to connect to. If the
- * return value is -1, there was a syntax error in the
- * option, either unknown characters, or too many hosts.
- * If the return value is 0, one of the hostnames in the
- * path is unknown, and *cpp is set to point to the bad
- * hostname.
- *
- * *cpp: If *cpp was equal to NULL, it will be filled
- * in with a pointer to our static area that has
- * the option filled in. This will be 32bit aligned.
- *
- * *lenp: This will be filled in with how long the option
- * pointed to by *cpp is.
- *
- */
- unsigned long
- sourceroute(arg, cpp, lenp)
- char *arg;
- char **cpp;
- int *lenp;
- {
- static char lsr[44];
- char *cp, *cp2, *lsrp, *lsrep, *index();
- register int tmp;
- struct in_addr sin_addr;
- register struct hostent *host = 0;
- register char c;
-
- /*
- * Verify the arguments, and make sure we have
- * at least 7 bytes for the option.
- */
- if (cpp == NULL || lenp == NULL)
- return((unsigned long)-1);
- if (*cpp != NULL && *lenp < 7)
- return((unsigned long)-1);
- /*
- * Decide whether we have a buffer passed to us,
- * or if we need to use our own static buffer.
- */
- if (*cpp) {
- lsrp = *cpp;
- lsrep = lsrp + *lenp;
- } else {
- *cpp = lsrp = lsr;
- lsrep = lsrp + 44;
- }
-
- cp = arg;
-
- /*
- * Next, decide whether we have a loose source
- * route or a strict source route, and fill in
- * the begining of the option.
- */
- if (*cp == '!') {
- cp++;
- *lsrp++ = IPOPT_SSRR;
- } else
- *lsrp++ = IPOPT_LSRR;
-
- if (*cp != '@')
- return((unsigned long)-1);
-
- lsrp++; /* skip over length, we'll fill it in later */
- *lsrp++ = 4;
-
- cp++;
-
- sin_addr.s_addr = 0;
-
- for (c = 0;;) {
- if (c == ':')
- cp2 = 0;
- else for (cp2 = cp; c = *cp2; cp2++) {
- if (c == ',') {
- *cp2++ = '\0';
- if (*cp2 == '@')
- cp2++;
- } else if (c == '@') {
- *cp2++ = '\0';
- } else if (c == ':') {
- *cp2++ = '\0';
- } else
- continue;
- break;
- }
- if (!c)
- cp2 = 0;
-
- if ((tmp = inet_addr(cp)) != -1) {
- sin_addr.s_addr = tmp;
- } else if (host = gethostbyname(cp)) {
- memcpy((caddr_t)&sin_addr, host->h_addr, host->h_length);
- } else {
- *cpp = cp;
- return(0);
- }
- memcpy(lsrp, (char *)&sin_addr, 4);
- lsrp += 4;
- if (cp2)
- cp = cp2;
- else
- break;
- /*
- * Check to make sure there is space for next address
- */
- if (lsrp + 4 > lsrep)
- return((unsigned long)-1);
- }
- if ((*(*cpp+IPOPT_OLEN) = lsrp - *cpp) <= 7) {
- *cpp = 0;
- *lenp = 0;
- return((unsigned long)-1);
- }
- *lsrp++ = IPOPT_NOP; /* 32 bit word align it */
- *lenp = lsrp - *cpp;
- return(sin_addr.s_addr);
- }
- #endif
-
- #if defined(NOSTRNCASECMP)
- strncasecmp(p1, p2, len)
- register char *p1, *p2;
- int len;
- {
- while (len--) {
- if (tolower(*p1) != tolower(*p2))
- return(tolower(*p1) - tolower(*p2));
- if (*p1 == '\0')
- return(0);
- p1++, p2++;
- }
- return(0);
- }
- #endif
-