xref: /freebsd/usr.sbin/ppp/prompt.c (revision d93d3a9c32d3e1ba843e8e7033f6570c714f86df)
185b542cfSBrian Somers /*-
285b542cfSBrian Somers  * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
385b542cfSBrian Somers  * All rights reserved.
485b542cfSBrian Somers  *
585b542cfSBrian Somers  * Redistribution and use in source and binary forms, with or without
685b542cfSBrian Somers  * modification, are permitted provided that the following conditions
785b542cfSBrian Somers  * are met:
885b542cfSBrian Somers  * 1. Redistributions of source code must retain the above copyright
985b542cfSBrian Somers  *    notice, this list of conditions and the following disclaimer.
1085b542cfSBrian Somers  * 2. Redistributions in binary form must reproduce the above copyright
1185b542cfSBrian Somers  *    notice, this list of conditions and the following disclaimer in the
1285b542cfSBrian Somers  *    documentation and/or other materials provided with the distribution.
1385b542cfSBrian Somers  *
1485b542cfSBrian Somers  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
1585b542cfSBrian Somers  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1685b542cfSBrian Somers  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1785b542cfSBrian Somers  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1885b542cfSBrian Somers  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1985b542cfSBrian Somers  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2085b542cfSBrian Somers  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2185b542cfSBrian Somers  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2285b542cfSBrian Somers  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2385b542cfSBrian Somers  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2485b542cfSBrian Somers  * SUCH DAMAGE.
2585b542cfSBrian Somers  *
26d93d3a9cSBrian Somers  *	$Id: prompt.c,v 1.4 1998/05/27 22:43:37 brian Exp $
2785b542cfSBrian Somers  */
2885b542cfSBrian Somers 
2985b542cfSBrian Somers #include <sys/param.h>
3085b542cfSBrian Somers #include <netinet/in.h>
31eaa4df37SBrian Somers #include <netinet/in_systm.h>
32eaa4df37SBrian Somers #include <netinet/ip.h>
33565e35e5SBrian Somers #include <sys/un.h>
3485b542cfSBrian Somers 
35833882f7SBrian Somers #include <errno.h>
3685b542cfSBrian Somers #include <stdarg.h>
3785b542cfSBrian Somers #include <stdio.h>
38b6217683SBrian Somers #include <stdlib.h>
39b6217683SBrian Somers #include <string.h>
4085b542cfSBrian Somers #include <sys/fcntl.h>
4185b542cfSBrian Somers #include <termios.h>
4285b542cfSBrian Somers #include <unistd.h>
4385b542cfSBrian Somers 
4485b542cfSBrian Somers #include "defs.h"
4585b542cfSBrian Somers #include "timer.h"
4685b542cfSBrian Somers #include "command.h"
4785b542cfSBrian Somers #include "log.h"
4885b542cfSBrian Somers #include "descriptor.h"
4985b542cfSBrian Somers #include "prompt.h"
5085b542cfSBrian Somers #include "fsm.h"
5185b542cfSBrian Somers #include "lcp.h"
5285b542cfSBrian Somers #include "auth.h"
5385b542cfSBrian Somers #include "iplist.h"
5485b542cfSBrian Somers #include "throughput.h"
55eaa4df37SBrian Somers #include "slcompress.h"
5685b542cfSBrian Somers #include "ipcp.h"
575ca5389aSBrian Somers #include "filter.h"
58879ed6faSBrian Somers #include "lqr.h"
593006ec67SBrian Somers #include "hdlc.h"
603006ec67SBrian Somers #include "async.h"
613006ec67SBrian Somers #include "mbuf.h"
623b0f8d2eSBrian Somers #include "ccp.h"
633006ec67SBrian Somers #include "link.h"
643006ec67SBrian Somers #include "physical.h"
653b0f8d2eSBrian Somers #include "mp.h"
663b0f8d2eSBrian Somers #include "bundle.h"
67c5a5a6caSBrian Somers #include "chat.h"
68e2ebb036SBrian Somers #include "chap.h"
69c5a5a6caSBrian Somers #include "datalink.h"
70b6217683SBrian Somers #include "server.h"
7185b542cfSBrian Somers 
72b6217683SBrian Somers static void
73b6217683SBrian Somers prompt_Display(struct prompt *p)
74b6217683SBrian Somers {
75d93d3a9cSBrian Somers   /* XXX: See Index2Nam() - should we only figure this out once ? */
76b6217683SBrian Somers   static char shostname[MAXHOSTNAMELEN];
77b6217683SBrian Somers   const char *pconnect, *pauth;
78b6217683SBrian Somers 
79b6217683SBrian Somers   if (p->TermMode || !p->needprompt)
80b6217683SBrian Somers     return;
81b6217683SBrian Somers 
82b6217683SBrian Somers   p->needprompt = 0;
83b6217683SBrian Somers 
84b6217683SBrian Somers   if (p->nonewline)
85b6217683SBrian Somers     p->nonewline = 0;
86b6217683SBrian Somers   else
87b6217683SBrian Somers     fprintf(p->Term, "\n");
88b6217683SBrian Somers 
89b6217683SBrian Somers   if (p->auth == LOCAL_AUTH)
90b6217683SBrian Somers     pauth = " ON ";
91b6217683SBrian Somers   else
92b6217683SBrian Somers     pauth = " on ";
93b6217683SBrian Somers 
94b6217683SBrian Somers   if (p->bundle->ncp.ipcp.fsm.state == ST_OPENED)
95b6217683SBrian Somers     pconnect = "PPP";
96b6217683SBrian Somers   else if (bundle_Phase(p->bundle) == PHASE_NETWORK)
97b6217683SBrian Somers     pconnect = "PPp";
98b6217683SBrian Somers   else if (bundle_Phase(p->bundle) == PHASE_AUTHENTICATE)
99b6217683SBrian Somers     pconnect = "Ppp";
100b6217683SBrian Somers   else
101b6217683SBrian Somers     pconnect = "ppp";
102b6217683SBrian Somers 
103b6217683SBrian Somers   if (*shostname == '\0') {
104cdbbb6b5SBrian Somers     char *dot;
105b6217683SBrian Somers 
106b6217683SBrian Somers     if (gethostname(shostname, sizeof shostname))
107b6217683SBrian Somers       strcpy(shostname, "localhost");
108cdbbb6b5SBrian Somers     else if ((dot = strchr(shostname, '.')))
109cdbbb6b5SBrian Somers       *dot = '\0';
110b6217683SBrian Somers   }
111b6217683SBrian Somers 
112b6217683SBrian Somers   fprintf(p->Term, "%s%s%s> ", pconnect, pauth, shostname);
113b6217683SBrian Somers   fflush(p->Term);
114b6217683SBrian Somers }
11585b542cfSBrian Somers 
11685b542cfSBrian Somers static int
11785b542cfSBrian Somers prompt_UpdateSet(struct descriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
11885b542cfSBrian Somers {
11985b542cfSBrian Somers   struct prompt *p = descriptor2prompt(d);
120b6dec9f0SBrian Somers   int sets;
12185b542cfSBrian Somers 
122b6dec9f0SBrian Somers   sets = 0;
123f91ad6b0SBrian Somers 
124f91ad6b0SBrian Somers   if (!p->active)
125f91ad6b0SBrian Somers     return sets;
126f91ad6b0SBrian Somers 
12785b542cfSBrian Somers   if (p->fd_in >= 0) {
128b6dec9f0SBrian Somers     if (r) {
12985b542cfSBrian Somers       FD_SET(p->fd_in, r);
13024989c68SBrian Somers       log_Printf(LogTIMER, "prompt %s: fdset(r) %d\n", p->src.from, p->fd_in);
131b6dec9f0SBrian Somers       sets++;
132b6dec9f0SBrian Somers     }
133b6dec9f0SBrian Somers     if (e) {
13485b542cfSBrian Somers       FD_SET(p->fd_in, e);
13524989c68SBrian Somers       log_Printf(LogTIMER, "prompt %s: fdset(e) %d\n", p->src.from, p->fd_in);
136b6dec9f0SBrian Somers       sets++;
137b6dec9f0SBrian Somers     }
138b6dec9f0SBrian Somers     if (sets && *n < p->fd_in + 1)
139b6dec9f0SBrian Somers       *n = p->fd_in + 1;
14085b542cfSBrian Somers   }
14185b542cfSBrian Somers 
142b6217683SBrian Somers   prompt_Display(p);
143b6217683SBrian Somers 
144b6dec9f0SBrian Somers   return sets;
14585b542cfSBrian Somers }
14685b542cfSBrian Somers 
14785b542cfSBrian Somers static int
1482f786681SBrian Somers prompt_IsSet(struct descriptor *d, const fd_set *fdset)
14985b542cfSBrian Somers {
15085b542cfSBrian Somers   struct prompt *p = descriptor2prompt(d);
15185b542cfSBrian Somers   return p->fd_in >= 0 && FD_ISSET(p->fd_in, fdset);
15285b542cfSBrian Somers }
15385b542cfSBrian Somers 
15485b542cfSBrian Somers 
15585b542cfSBrian Somers static void
15685b542cfSBrian Somers prompt_ShowHelp(struct prompt *p)
15785b542cfSBrian Somers {
15885b542cfSBrian Somers   prompt_Printf(p, "The following commands are available:\r\n");
15985b542cfSBrian Somers   prompt_Printf(p, " ~p\tEnter Packet mode\r\n");
16085b542cfSBrian Somers   prompt_Printf(p, " ~-\tDecrease log level\r\n");
16185b542cfSBrian Somers   prompt_Printf(p, " ~+\tIncrease log level\r\n");
1623b0f8d2eSBrian Somers   prompt_Printf(p, " ~t\tShow timers\r\n");
1633b0f8d2eSBrian Somers   prompt_Printf(p, " ~m\tShow memory map\r\n");
16485b542cfSBrian Somers   prompt_Printf(p, " ~.\tTerminate program\r\n");
16585b542cfSBrian Somers   prompt_Printf(p, " ~?\tThis help\r\n");
16685b542cfSBrian Somers }
16785b542cfSBrian Somers 
16885b542cfSBrian Somers static void
16985b542cfSBrian Somers prompt_Read(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
17085b542cfSBrian Somers {
17185b542cfSBrian Somers   struct prompt *p = descriptor2prompt(d);
17285b542cfSBrian Somers   int n;
17385b542cfSBrian Somers   char ch;
17485b542cfSBrian Somers   char linebuff[LINE_LEN];
17585b542cfSBrian Somers 
1761b35f8f7SBrian Somers   if (p->TermMode == NULL) {
17785b542cfSBrian Somers     n = read(p->fd_in, linebuff, sizeof linebuff - 1);
17885b542cfSBrian Somers     if (n > 0) {
17985b542cfSBrian Somers       if (linebuff[n-1] == '\n')
18085b542cfSBrian Somers         linebuff[--n] = '\0';
18185b542cfSBrian Somers       else
18285b542cfSBrian Somers         linebuff[n] = '\0';
183dd7e2610SBrian Somers       p->nonewline = 1;		/* Maybe command_Decode does a prompt */
184b6217683SBrian Somers       prompt_Required(p);
18585b542cfSBrian Somers       if (n)
186dd7e2610SBrian Somers         command_Decode(bundle, linebuff, n, p, p->src.from);
18785b542cfSBrian Somers     } else if (n <= 0) {
1880f2f3eb3SBrian Somers       log_Printf(LogPHASE, "%s: Client connection closed.\n", p->src.from);
189b6217683SBrian Somers       prompt_Destroy(p, 0);
19085b542cfSBrian Somers     }
19185b542cfSBrian Somers     return;
19285b542cfSBrian Somers   }
19385b542cfSBrian Somers 
194c7cc5030SBrian Somers   switch (p->TermMode->state) {
195c7cc5030SBrian Somers     case DATALINK_CLOSED:
196c7cc5030SBrian Somers       prompt_Printf(p, "Link lost, terminal mode.\n");
197b6217683SBrian Somers       prompt_TtyCommandMode(p);
198b6217683SBrian Somers       p->nonewline = 0;
199b6217683SBrian Somers       prompt_Required(p);
200c7cc5030SBrian Somers       return;
201c7cc5030SBrian Somers 
202c7cc5030SBrian Somers     case DATALINK_READY:
203c7cc5030SBrian Somers       break;
204c7cc5030SBrian Somers 
205c7cc5030SBrian Somers     case DATALINK_OPEN:
206c7cc5030SBrian Somers       prompt_Printf(p, "\nPacket mode detected.\n");
207b6217683SBrian Somers       prompt_TtyCommandMode(p);
208b6217683SBrian Somers       p->nonewline = 0;
209c7cc5030SBrian Somers       /* We'll get a prompt because of our status change */
210c7cc5030SBrian Somers       /* Fall through */
211c7cc5030SBrian Somers 
212c7cc5030SBrian Somers     default:
213c7cc5030SBrian Somers       /* Wait 'till we're in a state we care about */
214c7cc5030SBrian Somers       return;
215c7cc5030SBrian Somers   }
216c7cc5030SBrian Somers 
21785b542cfSBrian Somers   /*
21885b542cfSBrian Somers    * We are in terminal mode, decode special sequences
21985b542cfSBrian Somers    */
22085b542cfSBrian Somers   n = read(p->fd_in, &ch, 1);
221dd7e2610SBrian Somers   log_Printf(LogDEBUG, "Got %d bytes (reading from the terminal)\n", n);
22285b542cfSBrian Somers 
22385b542cfSBrian Somers   if (n > 0) {
224d93d3a9cSBrian Somers     switch (p->readtilde) {
22585b542cfSBrian Somers     case 0:
22685b542cfSBrian Somers       if (ch == '~')
227d93d3a9cSBrian Somers         p->readtilde = 1;
22885b542cfSBrian Somers       else
229dd7e2610SBrian Somers 	if (physical_Write(p->TermMode->physical, &ch, n) < 0) {
230dd7e2610SBrian Somers 	  log_Printf(LogERROR, "error writing to modem: %s\n", strerror(errno));
231833882f7SBrian Somers           prompt_TtyCommandMode(p);
232833882f7SBrian Somers         }
23385b542cfSBrian Somers       break;
23485b542cfSBrian Somers     case 1:
23585b542cfSBrian Somers       switch (ch) {
23685b542cfSBrian Somers       case '?':
23785b542cfSBrian Somers 	prompt_ShowHelp(p);
23885b542cfSBrian Somers 	break;
23985b542cfSBrian Somers       case 'p':
240c7cc5030SBrian Somers         datalink_Up(p->TermMode, 0, 1);
241c7cc5030SBrian Somers         prompt_Printf(p, "\nPacket mode.\n");
242b6217683SBrian Somers 	prompt_TtyCommandMode(p);
24385b542cfSBrian Somers         break;
24485b542cfSBrian Somers       case '.':
245b6217683SBrian Somers 	prompt_TtyCommandMode(p);
246b6217683SBrian Somers         p->nonewline = 0;
247b6217683SBrian Somers         prompt_Required(p);
24885b542cfSBrian Somers 	break;
24985b542cfSBrian Somers       case 't':
250dd7e2610SBrian Somers 	timer_Show(0, p);
25185b542cfSBrian Somers 	break;
25285b542cfSBrian Somers       case 'm':
253dd7e2610SBrian Somers 	mbuf_Show(NULL);
25485b542cfSBrian Somers 	break;
25585b542cfSBrian Somers       default:
256dd7e2610SBrian Somers 	if (physical_Write(p->TermMode->physical, &ch, n) < 0) {
257dd7e2610SBrian Somers 	  log_Printf(LogERROR, "error writing to modem: %s\n", strerror(errno));
258833882f7SBrian Somers           prompt_TtyCommandMode(p);
259833882f7SBrian Somers         }
26085b542cfSBrian Somers 	break;
26185b542cfSBrian Somers       }
262d93d3a9cSBrian Somers       p->readtilde = 0;
26385b542cfSBrian Somers       break;
26485b542cfSBrian Somers     }
26585b542cfSBrian Somers   }
26685b542cfSBrian Somers }
26785b542cfSBrian Somers 
26885b542cfSBrian Somers static void
269f4768038SBrian Somers prompt_Write(struct descriptor *d, struct bundle *bundle, const fd_set *fdset)
27085b542cfSBrian Somers {
271f4768038SBrian Somers   /* We never want to write here ! */
272dd7e2610SBrian Somers   log_Printf(LogERROR, "prompt_Write: Internal error: Bad call !\n");
27385b542cfSBrian Somers }
27485b542cfSBrian Somers 
275b6217683SBrian Somers struct prompt *
276b6217683SBrian Somers prompt_Create(struct server *s, struct bundle *bundle, int fd)
27785b542cfSBrian Somers {
278b6217683SBrian Somers   struct prompt *p = (struct prompt *)malloc(sizeof(struct prompt));
27985b542cfSBrian Somers 
280b6217683SBrian Somers   if (p != NULL) {
281b6217683SBrian Somers     p->desc.type = PROMPT_DESCRIPTOR;
282b6217683SBrian Somers     p->desc.UpdateSet = prompt_UpdateSet;
283b6217683SBrian Somers     p->desc.IsSet = prompt_IsSet;
284b6217683SBrian Somers     p->desc.Read = prompt_Read;
285b6217683SBrian Somers     p->desc.Write = prompt_Write;
28685b542cfSBrian Somers 
287b6217683SBrian Somers     if (fd == PROMPT_STD) {
2880f78c7a7SBrian Somers       char *tty = ttyname(STDIN_FILENO);
2890f78c7a7SBrian Somers 
2900f78c7a7SBrian Somers       if (!tty) {
2910f78c7a7SBrian Somers         free(p);
2920f78c7a7SBrian Somers         return NULL;
2930f78c7a7SBrian Somers       }
29485b542cfSBrian Somers       p->fd_in = STDIN_FILENO;
29585b542cfSBrian Somers       p->fd_out = STDOUT_FILENO;
29685b542cfSBrian Somers       p->Term = stdout;
297b6217683SBrian Somers       p->owner = NULL;
298b6217683SBrian Somers       p->auth = LOCAL_AUTH;
299565e35e5SBrian Somers       p->src.type = "Controller";
3000f78c7a7SBrian Somers       strncpy(p->src.from, tty, sizeof p->src.from - 1);
301565e35e5SBrian Somers       p->src.from[sizeof p->src.from - 1] = '\0';
302b6217683SBrian Somers       tcgetattr(p->fd_in, &p->oldtio);	/* Save original tty mode */
30385b542cfSBrian Somers     } else {
30485b542cfSBrian Somers       p->fd_in = p->fd_out = fd;
30585b542cfSBrian Somers       p->Term = fdopen(fd, "a+");
306b6217683SBrian Somers       p->owner = s;
307b6217683SBrian Somers       p->auth = *s->passwd ? LOCAL_NO_AUTH : LOCAL_AUTH;
308565e35e5SBrian Somers       p->src.type = "unknown";
309565e35e5SBrian Somers       *p->src.from = '\0';
31085b542cfSBrian Somers     }
3111b35f8f7SBrian Somers     p->TermMode = NULL;
312b6217683SBrian Somers     p->nonewline = 1;
313b6217683SBrian Somers     p->needprompt = 1;
314d93d3a9cSBrian Somers     p->readtilde = 0;
315b6217683SBrian Somers     p->bundle = bundle;
316b6217683SBrian Somers     log_RegisterPrompt(p);
317b6217683SBrian Somers   }
31885b542cfSBrian Somers 
319b6217683SBrian Somers   return p;
32085b542cfSBrian Somers }
32185b542cfSBrian Somers 
3223006ec67SBrian Somers void
323b6217683SBrian Somers prompt_Destroy(struct prompt *p, int verbose)
32485b542cfSBrian Somers {
3250f78c7a7SBrian Somers   if (p) {
326b6217683SBrian Somers     if (p->Term != stdout) {
327b6217683SBrian Somers       fclose(p->Term);
32885b542cfSBrian Somers       close(p->fd_in);
32985b542cfSBrian Somers       if (p->fd_out != p->fd_in)
33085b542cfSBrian Somers         close(p->fd_out);
33185b542cfSBrian Somers       if (verbose)
3320f2f3eb3SBrian Somers         log_Printf(LogPHASE, "%s: Client connection dropped.\n", p->src.from);
333b6217683SBrian Somers     } else
334b6217683SBrian Somers       prompt_TtyOldMode(p);
335b6217683SBrian Somers 
336565e35e5SBrian Somers     log_UnRegisterPrompt(p);
337565e35e5SBrian Somers     free(p);
33885b542cfSBrian Somers   }
3390f78c7a7SBrian Somers }
34085b542cfSBrian Somers 
34185b542cfSBrian Somers void
34285b542cfSBrian Somers prompt_Printf(struct prompt *p, const char *fmt,...)
34385b542cfSBrian Somers {
344f91ad6b0SBrian Somers   if (p && p->active) {
34585b542cfSBrian Somers     va_list ap;
34685b542cfSBrian Somers     va_start(ap, fmt);
34785b542cfSBrian Somers     vfprintf(p->Term, fmt, ap);
34885b542cfSBrian Somers     fflush(p->Term);
34985b542cfSBrian Somers     va_end(ap);
350c06d604bSBrian Somers     p->nonewline = 1;
35185b542cfSBrian Somers   }
35285b542cfSBrian Somers }
35385b542cfSBrian Somers 
35485b542cfSBrian Somers void
35585b542cfSBrian Somers prompt_vPrintf(struct prompt *p, const char *fmt, va_list ap)
35685b542cfSBrian Somers {
357f91ad6b0SBrian Somers   if (p && p->active) {
35885b542cfSBrian Somers     vfprintf(p->Term, fmt, ap);
35985b542cfSBrian Somers     fflush(p->Term);
360c06d604bSBrian Somers     p->nonewline = 1;
36185b542cfSBrian Somers   }
36285b542cfSBrian Somers }
36385b542cfSBrian Somers 
36485b542cfSBrian Somers void
365565e35e5SBrian Somers prompt_TtyInit(struct prompt *p)
36685b542cfSBrian Somers {
367565e35e5SBrian Somers   int stat, fd = p ? p->fd_in : STDIN_FILENO;
368b6217683SBrian Somers   struct termios newtio;
369b6217683SBrian Somers 
370565e35e5SBrian Somers   stat = fcntl(fd, F_GETFL, 0);
371565e35e5SBrian Somers   if (stat > 0) {
372565e35e5SBrian Somers     stat |= O_NONBLOCK;
373565e35e5SBrian Somers     fcntl(fd, F_SETFL, stat);
374565e35e5SBrian Somers   }
375565e35e5SBrian Somers 
376565e35e5SBrian Somers   if (p)
37785b542cfSBrian Somers     newtio = p->oldtio;
378565e35e5SBrian Somers   else
379565e35e5SBrian Somers     tcgetattr(fd, &newtio);
380565e35e5SBrian Somers 
38185b542cfSBrian Somers   newtio.c_lflag &= ~(ECHO | ISIG | ICANON);
38285b542cfSBrian Somers   newtio.c_iflag = 0;
38385b542cfSBrian Somers   newtio.c_oflag &= ~OPOST;
38485b542cfSBrian Somers   newtio.c_cc[VEOF] = _POSIX_VDISABLE;
385565e35e5SBrian Somers   if (!p)
38685b542cfSBrian Somers     newtio.c_cc[VINTR] = _POSIX_VDISABLE;
38785b542cfSBrian Somers   newtio.c_cc[VMIN] = 1;
38885b542cfSBrian Somers   newtio.c_cc[VTIME] = 0;
38985b542cfSBrian Somers   newtio.c_cflag |= CS8;
390565e35e5SBrian Somers   tcsetattr(fd, TCSANOW, &newtio);
391565e35e5SBrian Somers   if (p)
39285b542cfSBrian Somers     p->comtio = newtio;
39385b542cfSBrian Somers }
39485b542cfSBrian Somers 
39585b542cfSBrian Somers /*
39685b542cfSBrian Somers  *  Set tty into command mode. We allow canonical input and echo processing.
39785b542cfSBrian Somers  */
39885b542cfSBrian Somers void
39985b542cfSBrian Somers prompt_TtyCommandMode(struct prompt *p)
40085b542cfSBrian Somers {
40185b542cfSBrian Somers   struct termios newtio;
40285b542cfSBrian Somers   int stat;
40385b542cfSBrian Somers 
40485b542cfSBrian Somers   tcgetattr(p->fd_in, &newtio);
40585b542cfSBrian Somers   newtio.c_lflag |= (ECHO | ISIG | ICANON);
40685b542cfSBrian Somers   newtio.c_iflag = p->oldtio.c_iflag;
40785b542cfSBrian Somers   newtio.c_oflag |= OPOST;
40885b542cfSBrian Somers   tcsetattr(p->fd_in, TCSADRAIN, &newtio);
409b6217683SBrian Somers 
41085b542cfSBrian Somers   stat = fcntl(p->fd_in, F_GETFL, 0);
41185b542cfSBrian Somers   if (stat > 0) {
41285b542cfSBrian Somers     stat |= O_NONBLOCK;
413b6217683SBrian Somers     fcntl(p->fd_in, F_SETFL, stat);
41485b542cfSBrian Somers   }
415b6217683SBrian Somers 
4161b35f8f7SBrian Somers   p->TermMode = NULL;
41785b542cfSBrian Somers }
41885b542cfSBrian Somers 
41985b542cfSBrian Somers /*
42085b542cfSBrian Somers  * Set tty into terminal mode which is used while we invoke term command.
42185b542cfSBrian Somers  */
42285b542cfSBrian Somers void
4231b35f8f7SBrian Somers prompt_TtyTermMode(struct prompt *p, struct datalink *dl)
42485b542cfSBrian Somers {
42585b542cfSBrian Somers   int stat;
42685b542cfSBrian Somers 
427b6217683SBrian Somers   prompt_Printf(p, "Entering terminal mode on %s.\n", dl->name);
428b6217683SBrian Somers   prompt_Printf(p, "Type `~?' for help.\n");
429b6217683SBrian Somers 
430b6217683SBrian Somers   if (p->Term == stdout)
43185b542cfSBrian Somers     tcsetattr(p->fd_in, TCSADRAIN, &p->comtio);
432b6217683SBrian Somers 
43385b542cfSBrian Somers   stat = fcntl(p->fd_in, F_GETFL, 0);
43485b542cfSBrian Somers   if (stat > 0) {
43585b542cfSBrian Somers     stat &= ~O_NONBLOCK;
436b6217683SBrian Somers     fcntl(p->fd_in, F_SETFL, stat);
43785b542cfSBrian Somers   }
4381b35f8f7SBrian Somers   p->TermMode = dl;
43985b542cfSBrian Somers }
44085b542cfSBrian Somers 
44185b542cfSBrian Somers void
44285b542cfSBrian Somers prompt_TtyOldMode(struct prompt *p)
44385b542cfSBrian Somers {
44485b542cfSBrian Somers   int stat;
44585b542cfSBrian Somers 
44685b542cfSBrian Somers   stat = fcntl(p->fd_in, F_GETFL, 0);
44785b542cfSBrian Somers   if (stat > 0) {
44885b542cfSBrian Somers     stat &= ~O_NONBLOCK;
449b6217683SBrian Somers     fcntl(p->fd_in, F_SETFL, stat);
45085b542cfSBrian Somers   }
451b6217683SBrian Somers 
452b6217683SBrian Somers   if (p->Term == stdout)
45385b542cfSBrian Somers     tcsetattr(p->fd_in, TCSADRAIN, &p->oldtio);
45485b542cfSBrian Somers }
45585b542cfSBrian Somers 
45685b542cfSBrian Somers pid_t
45785b542cfSBrian Somers prompt_pgrp(struct prompt *p)
45885b542cfSBrian Somers {
459b6217683SBrian Somers   return tcgetpgrp(p->fd_in);
460b6217683SBrian Somers }
461b6217683SBrian Somers 
462b6217683SBrian Somers int
463b6217683SBrian Somers PasswdCommand(struct cmdargs const *arg)
464b6217683SBrian Somers {
465b6217683SBrian Somers   const char *pass;
466b6217683SBrian Somers 
467b6217683SBrian Somers   if (!arg->prompt) {
468dd7e2610SBrian Somers     log_Printf(LogWARN, "passwd: Cannot specify without a prompt\n");
469b6217683SBrian Somers     return 0;
470b6217683SBrian Somers   }
471b6217683SBrian Somers 
472b6217683SBrian Somers   if (arg->prompt->owner == NULL) {
473dd7e2610SBrian Somers     log_Printf(LogWARN, "passwd: Not required\n");
474b6217683SBrian Somers     return 0;
475b6217683SBrian Somers   }
476b6217683SBrian Somers 
47725092092SBrian Somers   if (arg->argc == arg->argn)
478b6217683SBrian Somers     pass = "";
47925092092SBrian Somers   else if (arg->argc > arg->argn+1)
480b6217683SBrian Somers     return -1;
481b6217683SBrian Somers   else
48225092092SBrian Somers     pass = arg->argv[arg->argn];
483b6217683SBrian Somers 
484b6217683SBrian Somers   if (!strcmp(arg->prompt->owner->passwd, pass))
485b6217683SBrian Somers     arg->prompt->auth = LOCAL_AUTH;
486b6217683SBrian Somers   else
487b6217683SBrian Somers     arg->prompt->auth = LOCAL_NO_AUTH;
488b6217683SBrian Somers 
489b6217683SBrian Somers   return 0;
49085b542cfSBrian Somers }
491f91ad6b0SBrian Somers 
492f91ad6b0SBrian Somers static struct pppTimer bgtimer;
493f91ad6b0SBrian Somers 
494f91ad6b0SBrian Somers static void
495f91ad6b0SBrian Somers prompt_TimedContinue(void *v)
496f91ad6b0SBrian Somers {
497f91ad6b0SBrian Somers   prompt_Continue((struct prompt *)v);
498f91ad6b0SBrian Somers }
499f91ad6b0SBrian Somers 
500f91ad6b0SBrian Somers void
501f91ad6b0SBrian Somers prompt_Continue(struct prompt *p)
502f91ad6b0SBrian Somers {
503dd7e2610SBrian Somers   timer_Stop(&bgtimer);
504f91ad6b0SBrian Somers   if (getpgrp() == prompt_pgrp(p)) {
505f91ad6b0SBrian Somers     prompt_TtyCommandMode(p);
506f91ad6b0SBrian Somers     p->nonewline = 1;
507f91ad6b0SBrian Somers     prompt_Required(p);
5080f2f3eb3SBrian Somers     log_ActivatePrompt(p);
509f91ad6b0SBrian Somers   } else if (!p->owner) {
510f91ad6b0SBrian Somers     bgtimer.func = prompt_TimedContinue;
511f91ad6b0SBrian Somers     bgtimer.name = "prompt bg";
512f91ad6b0SBrian Somers     bgtimer.load = SECTICKS;
513f91ad6b0SBrian Somers     bgtimer.arg = p;
514dd7e2610SBrian Somers     timer_Start(&bgtimer);
515f91ad6b0SBrian Somers   }
516f91ad6b0SBrian Somers }
517f91ad6b0SBrian Somers 
518f91ad6b0SBrian Somers void
519f91ad6b0SBrian Somers prompt_Suspend(struct prompt *p)
520f91ad6b0SBrian Somers {
521f91ad6b0SBrian Somers   if (getpgrp() == prompt_pgrp(p)) {
522f91ad6b0SBrian Somers     prompt_TtyOldMode(p);
5230f2f3eb3SBrian Somers     log_DeactivatePrompt(p);
524f91ad6b0SBrian Somers   }
525f91ad6b0SBrian Somers }
526