2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/param.h>
30 #include <netinet/in.h>
31 #include <netinet/in_systm.h>
32 #include <netinet/ip.h>
33 #include <sys/socket.h>
41 #include <sys/fcntl.h>
50 #include "descriptor.h"
55 #include "throughput.h"
56 #include "slcompress.h"
83 prompt_Display(struct prompt *p)
85 /* XXX: See Index2Nam() - should we only figure this out once ? */
86 static char shostname[MAXHOSTNAMELEN];
87 const char *pconnect, *pauth;
89 if (p->TermMode || !p->needprompt)
97 fprintf(p->Term, "\n");
99 if (p->auth == LOCAL_AUTH)
104 if (p->bundle->ncp.ipcp.fsm.state == ST_OPENED)
107 else if (!Enabled(p->bundle, OPT_IPCP) &&
108 p->bundle->ncp.ipv6cp.fsm.state == ST_OPENED)
111 else if (bundle_Phase(p->bundle) == PHASE_NETWORK)
113 else if (bundle_Phase(p->bundle) == PHASE_AUTHENTICATE)
118 if (*shostname == '\0') {
121 if (gethostname(shostname, sizeof shostname) || *shostname == '\0')
122 strcpy(shostname, "localhost");
123 else if ((dot = strchr(shostname, '.')))
127 fprintf(p->Term, "%s%s%s> ", pconnect, pauth, shostname);
132 prompt_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w __unused,
135 struct prompt *p = descriptor2prompt(d);
146 log_Printf(LogTIMER, "prompt %s: fdset(r) %d\n", p->src.from, p->fd_in);
151 log_Printf(LogTIMER, "prompt %s: fdset(e) %d\n", p->src.from, p->fd_in);
154 if (sets && *n < p->fd_in + 1)
164 prompt_IsSet(struct fdescriptor *d, const fd_set *fdset)
166 struct prompt *p = descriptor2prompt(d);
167 return p->fd_in >= 0 && FD_ISSET(p->fd_in, fdset);
172 prompt_ShowHelp(struct prompt *p)
174 prompt_Printf(p, "The following commands are available:\n");
175 prompt_Printf(p, " ~p\tEnter Packet mode\n");
176 prompt_Printf(p, " ~t\tShow timers\n");
177 prompt_Printf(p, " ~m\tShow memory map\n");
178 prompt_Printf(p, " ~.\tTerminate program\n");
179 prompt_Printf(p, " ~?\tThis help\n");
183 prompt_Read(struct fdescriptor *d, struct bundle *bundle,
184 const fd_set *fdset __unused)
186 struct prompt *p = descriptor2prompt(d);
190 char linebuff[LINE_LEN];
192 if (p->TermMode == NULL) {
193 n = read(p->fd_in, linebuff, sizeof linebuff - 1);
195 if (linebuff[n-1] == '\n')
196 linebuff[--n] = '\0';
199 p->nonewline = 1; /* Maybe command_Decode does a prompt */
202 if ((op = log_PromptContext) == NULL)
203 log_PromptContext = p;
204 if (!command_Decode(bundle, linebuff, n, p, p->src.from))
205 prompt_Printf(p, "Syntax error\n");
206 log_PromptContext = op;
209 log_Printf(LogPHASE, "%s: Client connection closed.\n", p->src.from);
212 prompt_Destroy(p, 0);
217 switch (p->TermMode->state) {
218 case DATALINK_CLOSED:
219 prompt_Printf(p, "Link lost, terminal mode.\n");
220 prompt_TtyCommandMode(p);
229 prompt_Printf(p, "\nPacket mode detected.\n");
230 prompt_TtyCommandMode(p);
232 /* We'll get a prompt because of our status change */
236 /* Wait 'till we're in a state we care about */
241 * We are in terminal mode, decode special sequences
243 n = read(p->fd_in, &ch, 1);
244 log_Printf(LogDEBUG, "Got %d bytes (reading from the terminal)\n", n);
247 switch (p->readtilde) {
252 if (physical_Write(p->TermMode->physical, &ch, n) < 0) {
253 log_Printf(LogWARN, "error writing to modem: %s\n", strerror(errno));
254 prompt_TtyCommandMode(p);
263 datalink_Up(p->TermMode, 0, 1);
264 prompt_Printf(p, "\nPacket mode.\n");
265 prompt_TtyCommandMode(p);
268 prompt_TtyCommandMode(p);
285 arg.cx = p->TermMode;
292 if (physical_Write(p->TermMode->physical, &ch, n) < 0) {
293 log_Printf(LogWARN, "error writing to modem: %s\n", strerror(errno));
294 prompt_TtyCommandMode(p);
305 prompt_Write(struct fdescriptor *d __unused, struct bundle *bundle __unused,
306 const fd_set *fdset __unused)
308 /* We never want to write here ! */
309 log_Printf(LogALERT, "prompt_Write: Internal error: Bad call !\n");
314 prompt_Create(struct server *s, struct bundle *bundle, int fd)
316 struct prompt *p = (struct prompt *)malloc(sizeof(struct prompt));
319 p->desc.type = PROMPT_DESCRIPTOR;
320 p->desc.UpdateSet = prompt_UpdateSet;
321 p->desc.IsSet = prompt_IsSet;
322 p->desc.Read = prompt_Read;
323 p->desc.Write = prompt_Write;
325 if (fd == PROMPT_STD) {
326 char *tty = ttyname(STDIN_FILENO);
332 p->fd_in = STDIN_FILENO;
333 p->fd_out = STDOUT_FILENO;
336 p->auth = LOCAL_AUTH;
337 p->src.type = "Controller";
338 strncpy(p->src.from, tty, sizeof p->src.from - 1);
339 p->src.from[sizeof p->src.from - 1] = '\0';
340 tcgetattr(p->fd_in, &p->oldtio); /* Save original tty mode */
342 p->fd_in = p->fd_out = fd;
343 p->Term = fdopen(fd, "a+");
345 p->auth = *s->cfg.passwd ? LOCAL_NO_AUTH : LOCAL_AUTH;
346 p->src.type = "unknown";
354 log_RegisterPrompt(p);
361 prompt_Destroy(struct prompt *p, int verbose)
364 if (p->Term != stdout) {
367 if (p->fd_out != p->fd_in)
370 log_Printf(LogPHASE, "%s: Client connection dropped.\n", p->src.from);
372 prompt_TtyOldMode(p);
374 log_UnRegisterPrompt(p);
380 prompt_Printf(struct prompt *p, const char *fmt,...)
382 if (p && p->active) {
386 prompt_vPrintf(p, fmt, ap);
392 prompt_vPrintf(struct prompt *p, const char *fmt, va_list ap)
394 if (p && p->active) {
399 /* Stuff '\r' in front of '\n' 'cos we're in raw mode */
400 size_t len = strlen(fmt);
402 if (len && len < sizeof nfmt - 1 && fmt[len-1] == '\n' &&
403 (len == 1 || fmt[len-2] != '\r')) {
405 strcpy(nfmt + len - 1, "\r\n");
411 vfprintf(p->Term, pfmt, ap);
418 prompt_TtyInit(struct prompt *p)
420 int stat, fd = p ? p->fd_in : STDIN_FILENO;
421 struct termios newtio;
423 stat = fcntl(fd, F_GETFL, 0);
426 fcntl(fd, F_SETFL, stat);
432 tcgetattr(fd, &newtio);
434 newtio.c_lflag &= ~(ECHO | ISIG | ICANON);
436 newtio.c_oflag &= ~OPOST;
438 newtio.c_cc[VINTR] = _POSIX_VDISABLE;
439 newtio.c_cc[VMIN] = 1;
440 newtio.c_cc[VTIME] = 0;
441 newtio.c_cflag |= CS8;
442 tcsetattr(fd, TCSANOW, &newtio);
448 * Set tty into command mode. We allow canonical input and echo processing.
451 prompt_TtyCommandMode(struct prompt *p)
453 struct termios newtio;
456 tcgetattr(p->fd_in, &newtio);
457 newtio.c_lflag |= (ECHO | ISIG | ICANON);
458 newtio.c_iflag = p->oldtio.c_iflag;
459 newtio.c_oflag |= OPOST;
460 tcsetattr(p->fd_in, TCSADRAIN, &newtio);
462 stat = fcntl(p->fd_in, F_GETFL, 0);
465 fcntl(p->fd_in, F_SETFL, stat);
472 * Set tty into terminal mode which is used while we invoke term command.
475 prompt_TtyTermMode(struct prompt *p, struct datalink *dl)
479 if (p->Term == stdout)
480 tcsetattr(p->fd_in, TCSADRAIN, &p->comtio);
482 stat = fcntl(p->fd_in, F_GETFL, 0);
485 fcntl(p->fd_in, F_SETFL, stat);
491 prompt_TtyOldMode(struct prompt *p)
495 stat = fcntl(p->fd_in, F_GETFL, 0);
498 fcntl(p->fd_in, F_SETFL, stat);
501 if (p->Term == stdout)
502 tcsetattr(p->fd_in, TCSADRAIN, &p->oldtio);
506 prompt_pgrp(struct prompt *p)
508 return tcgetpgrp(p->fd_in);
512 PasswdCommand(struct cmdargs const *arg)
517 log_Printf(LogWARN, "passwd: Cannot specify without a prompt\n");
521 if (arg->prompt->owner == NULL) {
522 log_Printf(LogWARN, "passwd: Not required\n");
526 if (arg->argc == arg->argn)
528 else if (arg->argc > arg->argn+1)
531 pass = arg->argv[arg->argn];
533 if (!strcmp(arg->prompt->owner->cfg.passwd, pass))
534 arg->prompt->auth = LOCAL_AUTH;
536 arg->prompt->auth = LOCAL_NO_AUTH;
541 static struct pppTimer bgtimer;
544 prompt_TimedContinue(void *v)
546 prompt_Continue((struct prompt *)v);
550 prompt_Continue(struct prompt *p)
552 timer_Stop(&bgtimer);
553 if (getpgrp() == prompt_pgrp(p)) {
554 prompt_TtyCommandMode(p);
557 log_ActivatePrompt(p);
558 } else if (!p->owner) {
559 bgtimer.func = prompt_TimedContinue;
560 bgtimer.name = "prompt bg";
561 bgtimer.load = SECTICKS;
563 timer_Start(&bgtimer);
568 prompt_Suspend(struct prompt *p)
570 if (getpgrp() == prompt_pgrp(p)) {
571 prompt_TtyOldMode(p);
572 log_DeactivatePrompt(p);