2 * Virtual terminal [aka TeletYpe] interface routine.
3 * Copyright (C) 1997, 98 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <lib/version.h>
25 #include <sys/types.h>
33 #include "sockunion.h"
43 #include "lib_errors.h"
44 #include "northbound_cli.h"
47 #include <arpa/telnet.h>
50 #ifndef VTYSH_EXTRACT_PL
51 #include "lib/vty_clippy.c"
54 DEFINE_MTYPE_STATIC(LIB
, VTY
, "VTY")
55 DEFINE_MTYPE_STATIC(LIB
, VTY_OUT_BUF
, "VTY output buffer")
56 DEFINE_MTYPE_STATIC(LIB
, VTY_HIST
, "VTY history")
71 static void vty_event(enum event
, int, struct vty
*);
73 /* Extern host structure from command.c */
74 extern struct host host
;
76 /* Vector which store each vty structure. */
79 /* Vty timeout value. */
80 static unsigned long vty_timeout_val
= VTY_TIMEOUT_DEFAULT
;
82 /* Vty access-class command */
83 static char *vty_accesslist_name
= NULL
;
85 /* Vty access-calss for IPv6. */
86 static char *vty_ipv6_accesslist_name
= NULL
;
88 /* VTY server thread. */
89 static vector Vvty_serv_thread
;
91 /* Current directory. */
92 char vty_cwd
[MAXPATHLEN
];
94 /* Login password check. */
95 static int no_password_check
= 0;
97 /* Integrated configuration file path */
98 static char integrate_default
[] = SYSCONFDIR INTEGRATE_DEFAULT_CONFIG
;
100 static bool do_log_commands
;
101 static bool do_log_commands_perm
;
103 void vty_frame(struct vty
*vty
, const char *format
, ...)
107 va_start(args
, format
);
108 vsnprintfrr(vty
->frame
+ vty
->frame_pos
,
109 sizeof(vty
->frame
) - vty
->frame_pos
, format
, args
);
110 vty
->frame_pos
= strlen(vty
->frame
);
114 void vty_endframe(struct vty
*vty
, const char *endtext
)
116 if (vty
->frame_pos
== 0 && endtext
)
117 vty_out(vty
, "%s", endtext
);
121 bool vty_set_include(struct vty
*vty
, const char *regexp
)
129 regfree(&vty
->include
);
135 errcode
= regcomp(&vty
->include
, regexp
,
136 REG_EXTENDED
| REG_NEWLINE
| REG_NOSUB
);
139 regerror(ret
, &vty
->include
, errbuf
, sizeof(errbuf
));
140 vty_out(vty
, "%% Regex compilation error: %s", errbuf
);
148 /* VTY standard output function. */
149 int vty_out(struct vty
*vty
, const char *format
, ...)
157 if (vty
->frame_pos
) {
159 vty_out(vty
, "%s", vty
->frame
);
162 va_start(args
, format
);
163 p
= vasnprintfrr(MTYPE_VTY_OUT_BUF
, buf
, sizeof(buf
), format
, args
);
170 vector lines
= frrstr_split_vec(p
, "\n");
172 /* Place first value in the cache */
173 char *firstline
= vector_slot(lines
, 0);
174 buffer_put(vty
->lbuf
, (uint8_t *) firstline
, strlen(firstline
));
176 /* If our split returned more than one entry, time to filter */
177 if (vector_active(lines
) > 1) {
179 * returned string is MTYPE_TMP so it matches the MTYPE
180 * of everything else in the vector
182 char *bstr
= buffer_getstr(vty
->lbuf
);
183 buffer_reset(vty
->lbuf
);
184 XFREE(MTYPE_TMP
, lines
->index
[0]);
185 vector_set_index(lines
, 0, bstr
);
186 frrstr_filter_vec(lines
, &vty
->include
);
187 vector_compact(lines
);
189 * Consider the string "foo\n". If the regex is an empty string
190 * and the line ended with a newline, then the vector will look
196 * If the regex isn't empty, the vector will look like:
200 * In this case we'd like to preserve the newline, so we add
201 * the empty string [1] as in the first example.
203 if (p
[strlen(p
) - 1] == '\n' && vector_active(lines
) > 0
204 && strlen(vector_slot(lines
, vector_active(lines
) - 1)))
205 vector_set(lines
, XSTRDUP(MTYPE_TMP
, ""));
207 filtered
= frrstr_join_vec(lines
, "\n");
213 frrstr_strvec_free(lines
);
224 /* print with crlf replacement */
225 buffer_put_crlf(vty
->obuf
, (uint8_t *)filtered
,
229 fprintf(vty
->of
, "%s", filtered
);
235 /* print without crlf replacement */
236 buffer_put(vty
->obuf
, (uint8_t *)filtered
, strlen(filtered
));
242 if (vty
->filter
&& filtered
)
243 XFREE(MTYPE_TMP
, filtered
);
245 /* If p is not different with buf, it is allocated buffer. */
247 XFREE(MTYPE_VTY_OUT_BUF
, p
);
252 static int vty_log_out(struct vty
*vty
, const char *level
,
253 const char *proto_str
, const char *msg
,
254 struct timestamp_control
*ctl
)
260 if (!ctl
->already_rendered
) {
261 ctl
->len
= quagga_timestamp(ctl
->precision
, ctl
->buf
,
263 ctl
->already_rendered
= 1;
265 if (ctl
->len
+ 1 >= sizeof(buf
))
267 memcpy(buf
, ctl
->buf
, len
= ctl
->len
);
272 ret
= snprintf(buf
+ len
, sizeof(buf
) - len
, "%s: %s: ", level
,
275 ret
= snprintf(buf
+ len
, sizeof(buf
) - len
, "%s: ", proto_str
);
276 if ((ret
< 0) || ((size_t)(len
+= ret
) >= sizeof(buf
)))
279 if (((ret
= snprintf(buf
+ len
, sizeof(buf
) - len
, "%s", msg
)) < 0)
280 || ((size_t)((len
+= ret
) + 2) > sizeof(buf
)))
286 if (write(vty
->wfd
, buf
, len
) < 0) {
287 if (ERRNO_IO_RETRY(errno
))
288 /* Kernel buffer is full, probably too much debugging
290 drop the data and ignore. */
292 /* Fatal I/O error. */
294 0; /* disable monitoring to avoid infinite recursion */
295 flog_err(EC_LIB_SOCKET
,
296 "%s: write failed to vty client fd %d, closing: %s",
297 __func__
, vty
->fd
, safe_strerror(errno
));
298 buffer_reset(vty
->obuf
);
299 buffer_reset(vty
->lbuf
);
300 /* cannot call vty_close, because a parent routine may still try
301 to access the vty struct */
302 vty
->status
= VTY_CLOSE
;
303 shutdown(vty
->fd
, SHUT_RDWR
);
309 /* Output current time to the vty. */
310 void vty_time_print(struct vty
*vty
, int cr
)
312 char buf
[QUAGGA_TIMESTAMP_LEN
];
314 if (quagga_timestamp(0, buf
, sizeof(buf
)) == 0) {
315 zlog_info("quagga_timestamp error");
319 vty_out(vty
, "%s\n", buf
);
321 vty_out(vty
, "%s ", buf
);
326 /* Say hello to vty interface. */
327 void vty_hello(struct vty
*vty
)
333 f
= fopen(host
.motdfile
, "r");
335 while (fgets(buf
, sizeof(buf
), f
)) {
337 /* work backwards to ignore trailling isspace()
339 for (s
= buf
+ strlen(buf
);
340 (s
> buf
) && isspace((unsigned char)s
[-1]);
344 vty_out(vty
, "%s\n", buf
);
348 vty_out(vty
, "MOTD file not found\n");
349 } else if (host
.motd
)
350 vty_out(vty
, "%s", host
.motd
);
353 /* Put out prompt and wait input from user. */
354 static void vty_prompt(struct vty
*vty
)
356 if (vty
->type
== VTY_TERM
) {
357 vty_out(vty
, cmd_prompt(vty
->node
), cmd_hostname_get());
361 /* Send WILL TELOPT_ECHO to remote server. */
362 static void vty_will_echo(struct vty
*vty
)
364 unsigned char cmd
[] = {IAC
, WILL
, TELOPT_ECHO
, '\0'};
365 vty_out(vty
, "%s", cmd
);
368 /* Make suppress Go-Ahead telnet option. */
369 static void vty_will_suppress_go_ahead(struct vty
*vty
)
371 unsigned char cmd
[] = {IAC
, WILL
, TELOPT_SGA
, '\0'};
372 vty_out(vty
, "%s", cmd
);
375 /* Make don't use linemode over telnet. */
376 static void vty_dont_linemode(struct vty
*vty
)
378 unsigned char cmd
[] = {IAC
, DONT
, TELOPT_LINEMODE
, '\0'};
379 vty_out(vty
, "%s", cmd
);
382 /* Use window size. */
383 static void vty_do_window_size(struct vty
*vty
)
385 unsigned char cmd
[] = {IAC
, DO
, TELOPT_NAWS
, '\0'};
386 vty_out(vty
, "%s", cmd
);
389 #if 0 /* Currently not used. */
390 /* Make don't use lflow vty interface. */
392 vty_dont_lflow_ahead (struct vty
*vty
)
394 unsigned char cmd
[] = { IAC
, DONT
, TELOPT_LFLOW
, '\0' };
395 vty_out (vty
, "%s", cmd
);
399 /* Authentication of vty */
400 static void vty_auth(struct vty
*vty
, char *buf
)
403 enum node_type next_node
= 0;
405 char *crypt(const char *, const char *);
410 passwd
= host
.password_encrypt
;
412 passwd
= host
.password
;
414 next_node
= host
.enable
? VIEW_NODE
: ENABLE_NODE
;
416 next_node
= VIEW_NODE
;
418 case AUTH_ENABLE_NODE
:
420 passwd
= host
.enable_encrypt
;
422 passwd
= host
.enable
;
423 next_node
= ENABLE_NODE
;
429 fail
= strcmp(crypt(buf
, passwd
), passwd
);
431 fail
= strcmp(buf
, passwd
);
437 vty
->node
= next_node
; /* Success ! */
440 if (vty
->fail
>= 3) {
441 if (vty
->node
== AUTH_NODE
) {
443 "%% Bad passwords, too many failures!\n");
444 vty
->status
= VTY_CLOSE
;
446 /* AUTH_ENABLE_NODE */
449 "%% Bad enable passwords, too many failures!\n");
450 vty
->status
= VTY_CLOSE
;
456 /* Command execution over the vty interface. */
457 static int vty_command(struct vty
*vty
, char *buf
)
460 const char *protocolname
;
466 * Log non empty command lines
471 /* Skip white spaces. */
472 while (isspace((unsigned char)*cp
) && *cp
!= '\0')
475 if (cp
!= NULL
&& *cp
!= '\0') {
477 char vty_str
[VTY_BUFSIZ
];
478 char prompt_str
[VTY_BUFSIZ
];
480 /* format the base vty info */
481 snprintf(vty_str
, sizeof(vty_str
), "vty[??]@%s", vty
->address
);
483 for (i
= 0; i
< vector_active(vtyvec
); i
++)
484 if (vty
== vector_slot(vtyvec
, i
)) {
485 snprintf(vty_str
, sizeof(vty_str
), "vty[%d]@%s",
490 /* format the prompt */
491 snprintf(prompt_str
, sizeof(prompt_str
), cmd_prompt(vty
->node
),
494 /* now log the command */
495 zlog_notice("%s%s", prompt_str
, buf
);
498 #ifdef CONSUMED_TIME_CHECK
502 unsigned long realtime
, cputime
;
505 #endif /* CONSUMED_TIME_CHECK */
507 ret
= cmd_execute(vty
, buf
, NULL
, 0);
509 /* Get the name of the protocol if any */
510 protocolname
= frr_protoname
;
512 #ifdef CONSUMED_TIME_CHECK
514 if ((realtime
= thread_consumed_time(&after
, &before
, &cputime
))
515 > CONSUMED_TIME_CHECK
)
516 /* Warn about CPU hog that must be fixed. */
519 "SLOW COMMAND: command took %lums (cpu time %lums): %s",
520 realtime
/ 1000, cputime
/ 1000, buf
);
522 #endif /* CONSUMED_TIME_CHECK */
524 if (ret
!= CMD_SUCCESS
)
527 if (vty
->type
== VTY_FILE
)
528 vty_out(vty
, "Warning...\n");
530 case CMD_ERR_AMBIGUOUS
:
531 vty_out(vty
, "%% Ambiguous command.\n");
533 case CMD_ERR_NO_MATCH
:
534 vty_out(vty
, "%% [%s] Unknown command: %s\n",
537 case CMD_ERR_INCOMPLETE
:
538 vty_out(vty
, "%% Command incomplete.\n");
545 static const char telnet_backward_char
= 0x08;
546 static const char telnet_space_char
= ' ';
548 /* Basic function to write buffer to vty. */
549 static void vty_write(struct vty
*vty
, const char *buf
, size_t nbytes
)
551 if ((vty
->node
== AUTH_NODE
) || (vty
->node
== AUTH_ENABLE_NODE
))
554 /* Should we do buffering here ? And make vty_flush (vty) ? */
555 buffer_put(vty
->obuf
, buf
, nbytes
);
558 /* Basic function to insert character into vty. */
559 static void vty_self_insert(struct vty
*vty
, char c
)
564 if (vty
->length
+ 1 >= VTY_BUFSIZ
)
567 length
= vty
->length
- vty
->cp
;
568 memmove(&vty
->buf
[vty
->cp
+ 1], &vty
->buf
[vty
->cp
], length
);
569 vty
->buf
[vty
->cp
] = c
;
571 vty_write(vty
, &vty
->buf
[vty
->cp
], length
+ 1);
572 for (i
= 0; i
< length
; i
++)
573 vty_write(vty
, &telnet_backward_char
, 1);
578 vty
->buf
[vty
->length
] = '\0';
581 /* Self insert character 'c' in overwrite mode. */
582 static void vty_self_insert_overwrite(struct vty
*vty
, char c
)
584 if (vty
->cp
== vty
->length
) {
585 vty_self_insert(vty
, c
);
589 vty
->buf
[vty
->cp
++] = c
;
590 vty_write(vty
, &c
, 1);
594 * Insert a string into vty->buf at the current cursor position.
596 * If the resultant string would be larger than VTY_BUFSIZ it is
599 static void vty_insert_word_overwrite(struct vty
*vty
, char *str
)
601 if (vty
->cp
== VTY_BUFSIZ
)
604 size_t nwrite
= MIN((int)strlen(str
), VTY_BUFSIZ
- vty
->cp
- 1);
605 memcpy(&vty
->buf
[vty
->cp
], str
, nwrite
);
607 vty
->length
= MAX(vty
->cp
, vty
->length
);
608 vty
->buf
[vty
->length
] = '\0';
609 vty_write(vty
, str
, nwrite
);
612 /* Forward character. */
613 static void vty_forward_char(struct vty
*vty
)
615 if (vty
->cp
< vty
->length
) {
616 vty_write(vty
, &vty
->buf
[vty
->cp
], 1);
621 /* Backward character. */
622 static void vty_backward_char(struct vty
*vty
)
626 vty_write(vty
, &telnet_backward_char
, 1);
630 /* Move to the beginning of the line. */
631 static void vty_beginning_of_line(struct vty
*vty
)
634 vty_backward_char(vty
);
637 /* Move to the end of the line. */
638 static void vty_end_of_line(struct vty
*vty
)
640 while (vty
->cp
< vty
->length
)
641 vty_forward_char(vty
);
644 static void vty_kill_line_from_beginning(struct vty
*);
645 static void vty_redraw_line(struct vty
*);
647 /* Print command line history. This function is called from
648 vty_next_line and vty_previous_line. */
649 static void vty_history_print(struct vty
*vty
)
653 vty_kill_line_from_beginning(vty
);
655 /* Get previous line from history buffer */
656 length
= strlen(vty
->hist
[vty
->hp
]);
657 memcpy(vty
->buf
, vty
->hist
[vty
->hp
], length
);
658 vty
->cp
= vty
->length
= length
;
659 vty
->buf
[vty
->length
] = '\0';
661 /* Redraw current line */
662 vty_redraw_line(vty
);
665 /* Show next command line history. */
666 static void vty_next_line(struct vty
*vty
)
670 if (vty
->hp
== vty
->hindex
)
673 /* Try is there history exist or not. */
675 if (try_index
== (VTY_MAXHIST
- 1))
680 /* If there is not history return. */
681 if (vty
->hist
[try_index
] == NULL
)
686 vty_history_print(vty
);
689 /* Show previous command line history. */
690 static void vty_previous_line(struct vty
*vty
)
696 try_index
= VTY_MAXHIST
- 1;
700 if (vty
->hist
[try_index
] == NULL
)
705 vty_history_print(vty
);
708 /* This function redraw all of the command line character. */
709 static void vty_redraw_line(struct vty
*vty
)
711 vty_write(vty
, vty
->buf
, vty
->length
);
712 vty
->cp
= vty
->length
;
716 static void vty_forward_word(struct vty
*vty
)
718 while (vty
->cp
!= vty
->length
&& vty
->buf
[vty
->cp
] != ' ')
719 vty_forward_char(vty
);
721 while (vty
->cp
!= vty
->length
&& vty
->buf
[vty
->cp
] == ' ')
722 vty_forward_char(vty
);
725 /* Backward word without skipping training space. */
726 static void vty_backward_pure_word(struct vty
*vty
)
728 while (vty
->cp
> 0 && vty
->buf
[vty
->cp
- 1] != ' ')
729 vty_backward_char(vty
);
733 static void vty_backward_word(struct vty
*vty
)
735 while (vty
->cp
> 0 && vty
->buf
[vty
->cp
- 1] == ' ')
736 vty_backward_char(vty
);
738 while (vty
->cp
> 0 && vty
->buf
[vty
->cp
- 1] != ' ')
739 vty_backward_char(vty
);
742 /* When '^D' is typed at the beginning of the line we move to the down
744 static void vty_down_level(struct vty
*vty
)
752 /* When '^Z' is received from vty, move down to the enable mode. */
753 static void vty_end_config(struct vty
*vty
)
758 vty_config_exit(vty
);
759 vty
->node
= ENABLE_NODE
;
766 /* Delete a charcter at the current point. */
767 static void vty_delete_char(struct vty
*vty
)
772 if (vty
->length
== 0) {
777 if (vty
->cp
== vty
->length
)
778 return; /* completion need here? */
780 size
= vty
->length
- vty
->cp
;
783 memmove(&vty
->buf
[vty
->cp
], &vty
->buf
[vty
->cp
+ 1], size
- 1);
784 vty
->buf
[vty
->length
] = '\0';
786 if (vty
->node
== AUTH_NODE
|| vty
->node
== AUTH_ENABLE_NODE
)
789 vty_write(vty
, &vty
->buf
[vty
->cp
], size
- 1);
790 vty_write(vty
, &telnet_space_char
, 1);
792 for (i
= 0; i
< size
; i
++)
793 vty_write(vty
, &telnet_backward_char
, 1);
796 /* Delete a character before the point. */
797 static void vty_delete_backward_char(struct vty
*vty
)
802 vty_backward_char(vty
);
803 vty_delete_char(vty
);
806 /* Kill rest of line from current point. */
807 static void vty_kill_line(struct vty
*vty
)
812 size
= vty
->length
- vty
->cp
;
817 for (i
= 0; i
< size
; i
++)
818 vty_write(vty
, &telnet_space_char
, 1);
819 for (i
= 0; i
< size
; i
++)
820 vty_write(vty
, &telnet_backward_char
, 1);
822 memset(&vty
->buf
[vty
->cp
], 0, size
);
823 vty
->length
= vty
->cp
;
826 /* Kill line from the beginning. */
827 static void vty_kill_line_from_beginning(struct vty
*vty
)
829 vty_beginning_of_line(vty
);
833 /* Delete a word before the point. */
834 static void vty_forward_kill_word(struct vty
*vty
)
836 while (vty
->cp
!= vty
->length
&& vty
->buf
[vty
->cp
] == ' ')
837 vty_delete_char(vty
);
838 while (vty
->cp
!= vty
->length
&& vty
->buf
[vty
->cp
] != ' ')
839 vty_delete_char(vty
);
842 /* Delete a word before the point. */
843 static void vty_backward_kill_word(struct vty
*vty
)
845 while (vty
->cp
> 0 && vty
->buf
[vty
->cp
- 1] == ' ')
846 vty_delete_backward_char(vty
);
847 while (vty
->cp
> 0 && vty
->buf
[vty
->cp
- 1] != ' ')
848 vty_delete_backward_char(vty
);
851 /* Transpose chars before or at the point. */
852 static void vty_transpose_chars(struct vty
*vty
)
856 /* If length is short or point is near by the beginning of line then
858 if (vty
->length
< 2 || vty
->cp
< 1)
861 /* In case of point is located at the end of the line. */
862 if (vty
->cp
== vty
->length
) {
863 c1
= vty
->buf
[vty
->cp
- 1];
864 c2
= vty
->buf
[vty
->cp
- 2];
866 vty_backward_char(vty
);
867 vty_backward_char(vty
);
868 vty_self_insert_overwrite(vty
, c1
);
869 vty_self_insert_overwrite(vty
, c2
);
871 c1
= vty
->buf
[vty
->cp
];
872 c2
= vty
->buf
[vty
->cp
- 1];
874 vty_backward_char(vty
);
875 vty_self_insert_overwrite(vty
, c1
);
876 vty_self_insert_overwrite(vty
, c2
);
880 /* Do completion at vty interface. */
881 static void vty_complete_command(struct vty
*vty
)
885 char **matched
= NULL
;
888 if (vty
->node
== AUTH_NODE
|| vty
->node
== AUTH_ENABLE_NODE
)
891 vline
= cmd_make_strvec(vty
->buf
);
895 /* In case of 'help \t'. */
896 if (isspace((unsigned char)vty
->buf
[vty
->length
- 1]))
897 vector_set(vline
, NULL
);
899 matched
= cmd_complete_command(vline
, vty
, &ret
);
901 cmd_free_strvec(vline
);
905 case CMD_ERR_AMBIGUOUS
:
906 vty_out(vty
, "%% Ambiguous command.\n");
908 vty_redraw_line(vty
);
910 case CMD_ERR_NO_MATCH
:
911 /* vty_out (vty, "%% There is no matched command.\n"); */
913 vty_redraw_line(vty
);
915 case CMD_COMPLETE_FULL_MATCH
:
917 /* 2016-11-28 equinox -- need to debug, SEGV here */
918 vty_out(vty
, "%% CLI BUG: FULL_MATCH with NULL str\n");
920 vty_redraw_line(vty
);
924 vty_redraw_line(vty
);
925 vty_backward_pure_word(vty
);
926 vty_insert_word_overwrite(vty
, matched
[0]);
927 vty_self_insert(vty
, ' ');
928 XFREE(MTYPE_COMPLETION
, matched
[0]);
930 case CMD_COMPLETE_MATCH
:
932 vty_redraw_line(vty
);
933 vty_backward_pure_word(vty
);
934 vty_insert_word_overwrite(vty
, matched
[0]);
935 XFREE(MTYPE_COMPLETION
, matched
[0]);
937 case CMD_COMPLETE_LIST_MATCH
:
938 for (i
= 0; matched
[i
] != NULL
; i
++) {
939 if (i
!= 0 && ((i
% 6) == 0))
941 vty_out(vty
, "%-10s ", matched
[i
]);
942 XFREE(MTYPE_COMPLETION
, matched
[i
]);
947 vty_redraw_line(vty
);
949 case CMD_ERR_NOTHING_TODO
:
951 vty_redraw_line(vty
);
956 XFREE(MTYPE_TMP
, matched
);
959 static void vty_describe_fold(struct vty
*vty
, int cmd_width
,
960 unsigned int desc_width
, struct cmd_token
*token
)
968 if (desc_width
<= 0) {
969 vty_out(vty
, " %-*s %s\n", cmd_width
, cmd
, token
->desc
);
973 buf
= XCALLOC(MTYPE_TMP
, strlen(token
->desc
) + 1);
975 for (p
= token
->desc
; strlen(p
) > desc_width
; p
+= pos
+ 1) {
976 for (pos
= desc_width
; pos
> 0; pos
--)
977 if (*(p
+ pos
) == ' ')
985 vty_out(vty
, " %-*s %s\n", cmd_width
, cmd
, buf
);
990 vty_out(vty
, " %-*s %s\n", cmd_width
, cmd
, p
);
992 XFREE(MTYPE_TMP
, buf
);
995 /* Describe matched command function. */
996 static void vty_describe_command(struct vty
*vty
)
1001 unsigned int i
, width
, desc_width
;
1002 struct cmd_token
*token
, *token_cr
= NULL
;
1004 vline
= cmd_make_strvec(vty
->buf
);
1006 /* In case of '> ?'. */
1007 if (vline
== NULL
) {
1008 vline
= vector_init(1);
1009 vector_set(vline
, NULL
);
1010 } else if (isspace((unsigned char)vty
->buf
[vty
->length
- 1]))
1011 vector_set(vline
, NULL
);
1013 describe
= cmd_describe_command(vline
, vty
, &ret
);
1017 /* Ambiguous error. */
1019 case CMD_ERR_AMBIGUOUS
:
1020 vty_out(vty
, "%% Ambiguous command.\n");
1023 case CMD_ERR_NO_MATCH
:
1024 vty_out(vty
, "%% There is no matched command.\n");
1029 /* Get width of command string. */
1031 for (i
= 0; i
< vector_active(describe
); i
++)
1032 if ((token
= vector_slot(describe
, i
)) != NULL
) {
1035 if (token
->text
[0] == '\0')
1038 len
= strlen(token
->text
);
1044 /* Get width of description string. */
1045 desc_width
= vty
->width
- (width
+ 6);
1047 /* Print out description. */
1048 for (i
= 0; i
< vector_active(describe
); i
++)
1049 if ((token
= vector_slot(describe
, i
)) != NULL
) {
1050 if (token
->text
[0] == '\0')
1053 if (strcmp(token
->text
, CMD_CR_TEXT
) == 0) {
1059 vty_out(vty
, " %-s\n", token
->text
);
1060 else if (desc_width
>= strlen(token
->desc
))
1061 vty_out(vty
, " %-*s %s\n", width
, token
->text
,
1064 vty_describe_fold(vty
, width
, desc_width
,
1067 if (IS_VARYING_TOKEN(token
->type
)) {
1068 const char *ref
= vector_slot(
1069 vline
, vector_active(vline
) - 1);
1071 vector varcomps
= vector_init(VECTOR_MIN_SIZE
);
1072 cmd_variable_complete(token
, ref
, varcomps
);
1074 if (vector_active(varcomps
) > 0) {
1075 char *ac
= cmd_variable_comp2str(
1076 varcomps
, vty
->width
);
1077 vty_out(vty
, "%s\n", ac
);
1078 XFREE(MTYPE_TMP
, ac
);
1081 vector_free(varcomps
);
1084 vty_out (vty
, " %-*s %s\n", width
1085 desc
->cmd
[0] == '.' ? desc
->cmd
+ 1 : desc
->cmd
,
1086 desc
->str
? desc
->str
: "");
1090 if ((token
= token_cr
)) {
1092 vty_out(vty
, " %-s\n", token
->text
);
1093 else if (desc_width
>= strlen(token
->desc
))
1094 vty_out(vty
, " %-*s %s\n", width
, token
->text
,
1097 vty_describe_fold(vty
, width
, desc_width
, token
);
1101 cmd_free_strvec(vline
);
1103 vector_free(describe
);
1106 vty_redraw_line(vty
);
1109 static void vty_clear_buf(struct vty
*vty
)
1111 memset(vty
->buf
, 0, vty
->max
);
1114 /* ^C stop current input and do not add command line to the history. */
1115 static void vty_stop_input(struct vty
*vty
)
1117 vty
->cp
= vty
->length
= 0;
1122 vty_config_exit(vty
);
1123 vty
->node
= ENABLE_NODE
;
1128 /* Set history pointer to the latest one. */
1129 vty
->hp
= vty
->hindex
;
1132 /* Add current command line to the history buffer. */
1133 static void vty_hist_add(struct vty
*vty
)
1137 if (vty
->length
== 0)
1140 index
= vty
->hindex
? vty
->hindex
- 1 : VTY_MAXHIST
- 1;
1142 /* Ignore the same string as previous one. */
1143 if (vty
->hist
[index
])
1144 if (strcmp(vty
->buf
, vty
->hist
[index
]) == 0) {
1145 vty
->hp
= vty
->hindex
;
1149 /* Insert history entry. */
1150 XFREE(MTYPE_VTY_HIST
, vty
->hist
[vty
->hindex
]);
1151 vty
->hist
[vty
->hindex
] = XSTRDUP(MTYPE_VTY_HIST
, vty
->buf
);
1153 /* History index rotation. */
1155 if (vty
->hindex
== VTY_MAXHIST
)
1158 vty
->hp
= vty
->hindex
;
1161 /* #define TELNET_OPTION_DEBUG */
1163 /* Get telnet window size. */
1164 static int vty_telnet_option(struct vty
*vty
, unsigned char *buf
, int nbytes
)
1166 #ifdef TELNET_OPTION_DEBUG
1169 for (i
= 0; i
< nbytes
; i
++) {
1172 vty_out(vty
, "IAC ");
1175 vty_out(vty
, "WILL ");
1178 vty_out(vty
, "WONT ");
1181 vty_out(vty
, "DO ");
1184 vty_out(vty
, "DONT ");
1187 vty_out(vty
, "SB ");
1190 vty_out(vty
, "SE ");
1193 vty_out(vty
, "TELOPT_ECHO \n");
1196 vty_out(vty
, "TELOPT_SGA \n");
1199 vty_out(vty
, "TELOPT_NAWS \n");
1202 vty_out(vty
, "%x ", buf
[i
]);
1208 #endif /* TELNET_OPTION_DEBUG */
1213 vty
->iac_sb_in_progress
= 1;
1217 if (!vty
->iac_sb_in_progress
)
1220 if ((vty
->sb_len
== 0) || (vty
->sb_buf
[0] == '\0')) {
1221 vty
->iac_sb_in_progress
= 0;
1224 switch (vty
->sb_buf
[0]) {
1226 if (vty
->sb_len
!= TELNET_NAWS_SB_LEN
)
1229 "RFC 1073 violation detected: telnet NAWS option "
1230 "should send %d characters, but we received %lu",
1232 (unsigned long)vty
->sb_len
);
1233 else if (sizeof(vty
->sb_buf
) < TELNET_NAWS_SB_LEN
)
1236 "Bug detected: sizeof(vty->sb_buf) %lu < %d, too small to handle the telnet NAWS option",
1237 (unsigned long)sizeof(vty
->sb_buf
),
1238 TELNET_NAWS_SB_LEN
);
1240 vty
->width
= ((vty
->sb_buf
[1] << 8)
1242 vty
->height
= ((vty
->sb_buf
[3] << 8)
1244 #ifdef TELNET_OPTION_DEBUG
1246 "TELNET NAWS window size negotiation completed: "
1247 "width %d, height %d\n",
1248 vty
->width
, vty
->height
);
1253 vty
->iac_sb_in_progress
= 0;
1263 /* Execute current command line. */
1264 static int vty_execute(struct vty
*vty
)
1270 switch (vty
->node
) {
1272 case AUTH_ENABLE_NODE
:
1273 vty_auth(vty
, vty
->buf
);
1276 ret
= vty_command(vty
, vty
->buf
);
1277 if (vty
->type
== VTY_TERM
)
1282 /* Clear command line buffer. */
1283 vty
->cp
= vty
->length
= 0;
1286 if (vty
->status
!= VTY_CLOSE
)
1292 #define CONTROL(X) ((X) - '@')
1293 #define VTY_NORMAL 0
1294 #define VTY_PRE_ESCAPE 1
1295 #define VTY_ESCAPE 2
1297 /* Escape character command map. */
1298 static void vty_escape_map(unsigned char c
, struct vty
*vty
)
1302 vty_previous_line(vty
);
1308 vty_forward_char(vty
);
1311 vty_backward_char(vty
);
1317 /* Go back to normal mode. */
1318 vty
->escape
= VTY_NORMAL
;
1321 /* Quit print out to the buffer. */
1322 static void vty_buffer_reset(struct vty
*vty
)
1324 buffer_reset(vty
->obuf
);
1325 buffer_reset(vty
->lbuf
);
1327 vty_redraw_line(vty
);
1330 /* Read data via vty socket. */
1331 static int vty_read(struct thread
*thread
)
1335 unsigned char buf
[VTY_READ_BUFSIZ
];
1337 int vty_sock
= THREAD_FD(thread
);
1338 struct vty
*vty
= THREAD_ARG(thread
);
1340 /* Read raw data from socket */
1341 if ((nbytes
= read(vty
->fd
, buf
, VTY_READ_BUFSIZ
)) <= 0) {
1343 if (ERRNO_IO_RETRY(errno
)) {
1344 vty_event(VTY_READ
, vty_sock
, vty
);
1347 vty
->monitor
= 0; /* disable monitoring to avoid
1348 infinite recursion */
1351 "%s: read error on vty client fd %d, closing: %s",
1352 __func__
, vty
->fd
, safe_strerror(errno
));
1353 buffer_reset(vty
->obuf
);
1354 buffer_reset(vty
->lbuf
);
1356 vty
->status
= VTY_CLOSE
;
1359 for (i
= 0; i
< nbytes
; i
++) {
1360 if (buf
[i
] == IAC
) {
1369 if (vty
->iac_sb_in_progress
&& !vty
->iac
) {
1370 if (vty
->sb_len
< sizeof(vty
->sb_buf
))
1371 vty
->sb_buf
[vty
->sb_len
] = buf
[i
];
1377 /* In case of telnet command */
1379 ret
= vty_telnet_option(vty
, buf
+ i
, nbytes
- i
);
1386 if (vty
->status
== VTY_MORE
) {
1391 vty_buffer_reset(vty
);
1393 #if 0 /* More line does not work for "show ip bgp". */
1396 vty
->status
= VTY_MORELINE
;
1405 /* Escape character. */
1406 if (vty
->escape
== VTY_ESCAPE
) {
1407 vty_escape_map(buf
[i
], vty
);
1411 /* Pre-escape status. */
1412 if (vty
->escape
== VTY_PRE_ESCAPE
) {
1415 vty
->escape
= VTY_ESCAPE
;
1418 vty_backward_word(vty
);
1419 vty
->escape
= VTY_NORMAL
;
1422 vty_forward_word(vty
);
1423 vty
->escape
= VTY_NORMAL
;
1426 vty_forward_kill_word(vty
);
1427 vty
->escape
= VTY_NORMAL
;
1431 vty_backward_kill_word(vty
);
1432 vty
->escape
= VTY_NORMAL
;
1435 vty
->escape
= VTY_NORMAL
;
1443 vty_beginning_of_line(vty
);
1446 vty_backward_char(vty
);
1449 vty_stop_input(vty
);
1452 vty_delete_char(vty
);
1455 vty_end_of_line(vty
);
1458 vty_forward_char(vty
);
1462 vty_delete_backward_char(vty
);
1471 vty_previous_line(vty
);
1474 vty_transpose_chars(vty
);
1477 vty_kill_line_from_beginning(vty
);
1480 vty_backward_kill_word(vty
);
1483 vty_end_config(vty
);
1491 vty_complete_command(vty
);
1494 if (vty
->node
== AUTH_NODE
1495 || vty
->node
== AUTH_ENABLE_NODE
)
1496 vty_self_insert(vty
, buf
[i
]);
1498 vty_describe_command(vty
);
1501 if (i
+ 1 < nbytes
&& buf
[i
+ 1] == '[') {
1502 vty
->escape
= VTY_ESCAPE
;
1505 vty
->escape
= VTY_PRE_ESCAPE
;
1508 if (buf
[i
] > 31 && buf
[i
] < 127)
1509 vty_self_insert(vty
, buf
[i
]);
1515 if (vty
->status
== VTY_CLOSE
)
1518 vty_event(VTY_WRITE
, vty
->wfd
, vty
);
1519 vty_event(VTY_READ
, vty_sock
, vty
);
1524 /* Flush buffer to the vty. */
1525 static int vty_flush(struct thread
*thread
)
1528 buffer_status_t flushrc
;
1529 int vty_sock
= THREAD_FD(thread
);
1530 struct vty
*vty
= THREAD_ARG(thread
);
1532 /* Tempolary disable read thread. */
1533 if (vty
->lines
== 0)
1534 THREAD_OFF(vty
->t_read
);
1536 /* Function execution continue. */
1537 erase
= ((vty
->status
== VTY_MORE
|| vty
->status
== VTY_MORELINE
));
1539 /* N.B. if width is 0, that means we don't know the window size. */
1540 if ((vty
->lines
== 0) || (vty
->width
== 0) || (vty
->height
== 0))
1541 flushrc
= buffer_flush_available(vty
->obuf
, vty_sock
);
1542 else if (vty
->status
== VTY_MORELINE
)
1543 flushrc
= buffer_flush_window(vty
->obuf
, vty_sock
, vty
->width
,
1546 flushrc
= buffer_flush_window(
1547 vty
->obuf
, vty_sock
, vty
->width
,
1548 vty
->lines
>= 0 ? vty
->lines
: vty
->height
, erase
, 0);
1552 0; /* disable monitoring to avoid infinite recursion */
1553 zlog_info("buffer_flush failed on vty client fd %d, closing",
1555 buffer_reset(vty
->lbuf
);
1556 buffer_reset(vty
->obuf
);
1560 if (vty
->status
== VTY_CLOSE
)
1563 vty
->status
= VTY_NORMAL
;
1564 if (vty
->lines
== 0)
1565 vty_event(VTY_READ
, vty_sock
, vty
);
1568 case BUFFER_PENDING
:
1569 /* There is more data waiting to be written. */
1570 vty
->status
= VTY_MORE
;
1571 if (vty
->lines
== 0)
1572 vty_event(VTY_WRITE
, vty_sock
, vty
);
1579 /* Allocate new vty struct. */
1580 struct vty
*vty_new(void)
1582 struct vty
*new = XCALLOC(MTYPE_VTY
, sizeof(struct vty
));
1584 new->fd
= new->wfd
= -1;
1586 new->lbuf
= buffer_new(0);
1587 new->obuf
= buffer_new(0); /* Use default buffer size. */
1588 new->buf
= XCALLOC(MTYPE_VTY
, VTY_BUFSIZ
);
1589 new->max
= VTY_BUFSIZ
;
1595 /* allocate and initialise vty */
1596 static struct vty
*vty_new_init(int vty_sock
)
1602 vty
->wfd
= vty_sock
;
1603 vty
->type
= VTY_TERM
;
1604 vty
->node
= AUTH_NODE
;
1609 memset(vty
->hist
, 0, sizeof(vty
->hist
));
1612 vty
->xpath_index
= 0;
1613 memset(vty
->xpath
, 0, sizeof(vty
->xpath
));
1614 vty
->private_config
= false;
1615 vty
->candidate_config
= vty_shared_candidate_config
;
1616 vector_set_index(vtyvec
, vty_sock
, vty
);
1617 vty
->status
= VTY_NORMAL
;
1620 vty
->iac_sb_in_progress
= 0;
1626 /* Create new vty structure. */
1627 static struct vty
*vty_create(int vty_sock
, union sockunion
*su
)
1629 char buf
[SU_ADDRSTRLEN
];
1632 sockunion2str(su
, buf
, SU_ADDRSTRLEN
);
1634 /* Allocate new vty structure and set up default values. */
1635 vty
= vty_new_init(vty_sock
);
1637 /* configurable parameters not part of basic init */
1638 vty
->v_timeout
= vty_timeout_val
;
1639 strlcpy(vty
->address
, buf
, sizeof(vty
->address
));
1640 if (no_password_check
) {
1642 vty
->node
= ENABLE_NODE
;
1644 vty
->node
= VIEW_NODE
;
1646 if (host
.lines
>= 0)
1647 vty
->lines
= host
.lines
;
1649 if (!no_password_check
) {
1650 /* Vty is not available if password isn't set. */
1651 if (host
.password
== NULL
&& host
.password_encrypt
== NULL
) {
1652 vty_out(vty
, "Vty password is not set.\n");
1653 vty
->status
= VTY_CLOSE
;
1659 /* Say hello to the world. */
1661 if (!no_password_check
)
1662 vty_out(vty
, "\nUser Access Verification\n\n");
1664 /* Setting up terminal. */
1666 vty_will_suppress_go_ahead(vty
);
1668 vty_dont_linemode(vty
);
1669 vty_do_window_size(vty
);
1670 /* vty_dont_lflow_ahead (vty); */
1674 /* Add read/write thread. */
1675 vty_event(VTY_WRITE
, vty_sock
, vty
);
1676 vty_event(VTY_READ
, vty_sock
, vty
);
1681 /* create vty for stdio */
1682 static struct termios stdio_orig_termios
;
1683 static struct vty
*stdio_vty
= NULL
;
1684 static bool stdio_termios
= false;
1685 static void (*stdio_vty_atclose
)(int isexit
);
1687 static void vty_stdio_reset(int isexit
)
1691 tcsetattr(0, TCSANOW
, &stdio_orig_termios
);
1692 stdio_termios
= false;
1696 if (stdio_vty_atclose
)
1697 stdio_vty_atclose(isexit
);
1698 stdio_vty_atclose
= NULL
;
1702 static void vty_stdio_atexit(void)
1707 void vty_stdio_suspend(void)
1712 THREAD_OFF(stdio_vty
->t_write
);
1713 THREAD_OFF(stdio_vty
->t_read
);
1714 THREAD_OFF(stdio_vty
->t_timeout
);
1717 tcsetattr(0, TCSANOW
, &stdio_orig_termios
);
1718 stdio_termios
= false;
1721 void vty_stdio_resume(void)
1726 if (!tcgetattr(0, &stdio_orig_termios
)) {
1727 struct termios termios
;
1729 termios
= stdio_orig_termios
;
1730 termios
.c_iflag
&= ~(IGNBRK
| BRKINT
| PARMRK
| ISTRIP
| INLCR
1731 | IGNCR
| ICRNL
| IXON
);
1732 termios
.c_oflag
&= ~OPOST
;
1733 termios
.c_lflag
&= ~(ECHO
| ECHONL
| ICANON
| IEXTEN
);
1734 termios
.c_cflag
&= ~(CSIZE
| PARENB
);
1735 termios
.c_cflag
|= CS8
;
1736 tcsetattr(0, TCSANOW
, &termios
);
1737 stdio_termios
= true;
1740 vty_prompt(stdio_vty
);
1742 /* Add read/write thread. */
1743 vty_event(VTY_WRITE
, 1, stdio_vty
);
1744 vty_event(VTY_READ
, 0, stdio_vty
);
1747 void vty_stdio_close(void)
1751 vty_close(stdio_vty
);
1754 struct vty
*vty_stdio(void (*atclose
)(int isexit
))
1758 /* refuse creating two vtys on stdio */
1762 vty
= stdio_vty
= vty_new_init(0);
1763 stdio_vty_atclose
= atclose
;
1766 /* always have stdio vty in a known _unchangeable_ state, don't want
1768 * to have any effect here to make sure scripting this works as intended
1770 vty
->node
= ENABLE_NODE
;
1772 strlcpy(vty
->address
, "console", sizeof(vty
->address
));
1778 /* Accept connection from the network. */
1779 static int vty_accept(struct thread
*thread
)
1787 struct access_list
*acl
= NULL
;
1788 char buf
[SU_ADDRSTRLEN
];
1790 accept_sock
= THREAD_FD(thread
);
1792 /* We continue hearing vty socket. */
1793 vty_event(VTY_SERV
, accept_sock
, NULL
);
1795 memset(&su
, 0, sizeof(union sockunion
));
1797 /* We can handle IPv4 or IPv6 socket. */
1798 vty_sock
= sockunion_accept(accept_sock
, &su
);
1800 flog_err(EC_LIB_SOCKET
, "can't accept vty socket : %s",
1801 safe_strerror(errno
));
1804 set_nonblocking(vty_sock
);
1805 set_cloexec(vty_sock
);
1807 sockunion2hostprefix(&su
, &p
);
1809 /* VTY's accesslist apply. */
1810 if (p
.family
== AF_INET
&& vty_accesslist_name
) {
1811 if ((acl
= access_list_lookup(AFI_IP
, vty_accesslist_name
))
1812 && (access_list_apply(acl
, &p
) == FILTER_DENY
)) {
1813 zlog_info("Vty connection refused from %s",
1814 sockunion2str(&su
, buf
, SU_ADDRSTRLEN
));
1817 /* continue accepting connections */
1818 vty_event(VTY_SERV
, accept_sock
, NULL
);
1824 /* VTY's ipv6 accesslist apply. */
1825 if (p
.family
== AF_INET6
&& vty_ipv6_accesslist_name
) {
1826 if ((acl
= access_list_lookup(AFI_IP6
,
1827 vty_ipv6_accesslist_name
))
1828 && (access_list_apply(acl
, &p
) == FILTER_DENY
)) {
1829 zlog_info("Vty connection refused from %s",
1830 sockunion2str(&su
, buf
, SU_ADDRSTRLEN
));
1833 /* continue accepting connections */
1834 vty_event(VTY_SERV
, accept_sock
, NULL
);
1841 ret
= setsockopt(vty_sock
, IPPROTO_TCP
, TCP_NODELAY
, (char *)&on
,
1844 zlog_info("can't set sockopt to vty_sock : %s",
1845 safe_strerror(errno
));
1847 zlog_info("Vty connection from %s",
1848 sockunion2str(&su
, buf
, SU_ADDRSTRLEN
));
1850 vty_create(vty_sock
, &su
);
1855 static void vty_serv_sock_addrinfo(const char *hostname
, unsigned short port
)
1858 struct addrinfo req
;
1859 struct addrinfo
*ainfo
;
1860 struct addrinfo
*ainfo_save
;
1862 char port_str
[BUFSIZ
];
1864 memset(&req
, 0, sizeof(struct addrinfo
));
1865 req
.ai_flags
= AI_PASSIVE
;
1866 req
.ai_family
= AF_UNSPEC
;
1867 req
.ai_socktype
= SOCK_STREAM
;
1868 sprintf(port_str
, "%d", port
);
1869 port_str
[sizeof(port_str
) - 1] = '\0';
1871 ret
= getaddrinfo(hostname
, port_str
, &req
, &ainfo
);
1874 flog_err_sys(EC_LIB_SYSTEM_CALL
, "getaddrinfo failed: %s",
1882 if (ainfo
->ai_family
!= AF_INET
&& ainfo
->ai_family
!= AF_INET6
)
1885 sock
= socket(ainfo
->ai_family
, ainfo
->ai_socktype
,
1886 ainfo
->ai_protocol
);
1890 sockopt_v6only(ainfo
->ai_family
, sock
);
1891 sockopt_reuseaddr(sock
);
1892 sockopt_reuseport(sock
);
1895 ret
= bind(sock
, ainfo
->ai_addr
, ainfo
->ai_addrlen
);
1897 close(sock
); /* Avoid sd leak. */
1901 ret
= listen(sock
, 3);
1903 close(sock
); /* Avoid sd leak. */
1907 vty_event(VTY_SERV
, sock
, NULL
);
1908 } while ((ainfo
= ainfo
->ai_next
) != NULL
);
1910 freeaddrinfo(ainfo_save
);
1914 /* For sockaddr_un. */
1917 /* VTY shell UNIX domain socket. */
1918 static void vty_serv_un(const char *path
)
1922 struct sockaddr_un serv
;
1924 struct zprivs_ids_t ids
;
1926 /* First of all, unlink existing socket */
1930 old_mask
= umask(0007);
1932 /* Make UNIX domain socket. */
1933 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1935 flog_err_sys(EC_LIB_SOCKET
,
1936 "Cannot create unix stream socket: %s",
1937 safe_strerror(errno
));
1941 /* Make server socket. */
1942 memset(&serv
, 0, sizeof(struct sockaddr_un
));
1943 serv
.sun_family
= AF_UNIX
;
1944 strlcpy(serv
.sun_path
, path
, sizeof(serv
.sun_path
));
1945 #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN
1946 len
= serv
.sun_len
= SUN_LEN(&serv
);
1948 len
= sizeof(serv
.sun_family
) + strlen(serv
.sun_path
);
1949 #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */
1953 ret
= bind(sock
, (struct sockaddr
*)&serv
, len
);
1955 flog_err_sys(EC_LIB_SOCKET
, "Cannot bind path %s: %s", path
,
1956 safe_strerror(errno
));
1957 close(sock
); /* Avoid sd leak. */
1961 ret
= listen(sock
, 5);
1963 flog_err_sys(EC_LIB_SOCKET
, "listen(fd %d) failed: %s", sock
,
1964 safe_strerror(errno
));
1965 close(sock
); /* Avoid sd leak. */
1971 zprivs_get_ids(&ids
);
1973 /* Hack: ids.gid_vty is actually a uint, but we stored -1 in it
1974 earlier for the case when we don't need to chown the file
1975 type casting it here to make a compare */
1976 if ((int)ids
.gid_vty
> 0) {
1977 /* set group of socket */
1978 if (chown(path
, -1, ids
.gid_vty
)) {
1979 flog_err_sys(EC_LIB_SYSTEM_CALL
,
1980 "vty_serv_un: could chown socket, %s",
1981 safe_strerror(errno
));
1985 vty_event(VTYSH_SERV
, sock
, NULL
);
1988 /* #define VTYSH_DEBUG 1 */
1990 static int vtysh_accept(struct thread
*thread
)
1995 struct sockaddr_un client
;
1998 accept_sock
= THREAD_FD(thread
);
2000 vty_event(VTYSH_SERV
, accept_sock
, NULL
);
2002 memset(&client
, 0, sizeof(struct sockaddr_un
));
2003 client_len
= sizeof(struct sockaddr_un
);
2005 sock
= accept(accept_sock
, (struct sockaddr
*)&client
,
2006 (socklen_t
*)&client_len
);
2009 flog_err(EC_LIB_SOCKET
, "can't accept vty socket : %s",
2010 safe_strerror(errno
));
2014 if (set_nonblocking(sock
) < 0) {
2017 "vtysh_accept: could not set vty socket %d to non-blocking, %s, closing",
2018 sock
, safe_strerror(errno
));
2025 printf("VTY shell accept\n");
2026 #endif /* VTYSH_DEBUG */
2031 vty
->type
= VTY_SHELL_SERV
;
2032 vty
->node
= VIEW_NODE
;
2034 vty_event(VTYSH_READ
, sock
, vty
);
2039 static int vtysh_flush(struct vty
*vty
)
2041 switch (buffer_flush_available(vty
->obuf
, vty
->wfd
)) {
2042 case BUFFER_PENDING
:
2043 vty_event(VTYSH_WRITE
, vty
->wfd
, vty
);
2047 0; /* disable monitoring to avoid infinite recursion */
2048 flog_err(EC_LIB_SOCKET
, "%s: write error to fd %d, closing",
2050 buffer_reset(vty
->lbuf
);
2051 buffer_reset(vty
->obuf
);
2061 static int vtysh_read(struct thread
*thread
)
2067 unsigned char buf
[VTY_READ_BUFSIZ
];
2069 uint8_t header
[4] = {0, 0, 0, 0};
2071 sock
= THREAD_FD(thread
);
2072 vty
= THREAD_ARG(thread
);
2074 if ((nbytes
= read(sock
, buf
, VTY_READ_BUFSIZ
)) <= 0) {
2076 if (ERRNO_IO_RETRY(errno
)) {
2077 vty_event(VTYSH_READ
, sock
, vty
);
2080 vty
->monitor
= 0; /* disable monitoring to avoid
2081 infinite recursion */
2084 "%s: read failed on vtysh client fd %d, closing: %s",
2085 __func__
, sock
, safe_strerror(errno
));
2087 buffer_reset(vty
->lbuf
);
2088 buffer_reset(vty
->obuf
);
2091 printf("close vtysh\n");
2092 #endif /* VTYSH_DEBUG */
2097 printf("line: %.*s\n", nbytes
, buf
);
2098 #endif /* VTYSH_DEBUG */
2100 if (vty
->length
+ nbytes
>= VTY_BUFSIZ
) {
2101 /* Clear command line buffer. */
2102 vty
->cp
= vty
->length
= 0;
2104 vty_out(vty
, "%% Command is too long.\n");
2106 for (p
= buf
; p
< buf
+ nbytes
; p
++) {
2107 vty
->buf
[vty
->length
++] = *p
;
2109 /* Pass this line to parser. */
2110 ret
= vty_execute(vty
);
2111 /* Note that vty_execute clears the command buffer and resets
2112 vty->length to 0. */
2114 /* Return result. */
2116 printf("result: %d\n", ret
);
2117 printf("vtysh node: %d\n", vty
->node
);
2118 #endif /* VTYSH_DEBUG */
2120 /* hack for asynchronous "write integrated"
2121 * - other commands in "buf" will be ditched
2122 * - input during pending config-write is
2124 if (ret
== CMD_SUSPEND
)
2127 /* warning: watchfrr hardcodes this result write
2130 buffer_put(vty
->obuf
, header
, 4);
2132 if (!vty
->t_write
&& (vtysh_flush(vty
) < 0))
2133 /* Try to flush results; exit if a write
2140 if (vty
->status
== VTY_CLOSE
)
2143 vty_event(VTYSH_READ
, sock
, vty
);
2148 static int vtysh_write(struct thread
*thread
)
2150 struct vty
*vty
= THREAD_ARG(thread
);
2158 /* Determine address family to bind. */
2159 void vty_serv_sock(const char *addr
, unsigned short port
, const char *path
)
2161 /* If port is set to 0, do not listen on TCP/IP at all! */
2163 vty_serv_sock_addrinfo(addr
, port
);
2170 static void vty_error_delete(void *arg
)
2172 struct vty_error
*ve
= arg
;
2174 XFREE(MTYPE_TMP
, ve
);
2177 /* Close vty interface. Warning: call this only from functions that
2178 will be careful not to access the vty afterwards (since it has
2179 now been freed). This is safest from top-level functions (called
2180 directly by the thread dispatcher). */
2181 void vty_close(struct vty
*vty
)
2184 bool was_stdio
= false;
2186 /* Cancel threads.*/
2187 THREAD_OFF(vty
->t_read
);
2188 THREAD_OFF(vty
->t_write
);
2189 THREAD_OFF(vty
->t_timeout
);
2192 buffer_flush_all(vty
->obuf
, vty
->wfd
);
2194 /* Free input buffer. */
2195 buffer_free(vty
->obuf
);
2196 buffer_free(vty
->lbuf
);
2198 /* Free command history. */
2199 for (i
= 0; i
< VTY_MAXHIST
; i
++) {
2200 XFREE(MTYPE_VTY_HIST
, vty
->hist
[i
]);
2205 vector_unset(vtyvec
, vty
->fd
);
2207 if (vty
->wfd
> 0 && vty
->type
== VTY_FILE
)
2211 * note check is for fd > STDERR_FILENO, not fd != -1.
2212 * We never close stdin/stdout/stderr here, because we may be
2213 * running in foreground mode with logging to stdout. Also,
2214 * additionally, we'd need to replace these fds with /dev/null. */
2215 if (vty
->wfd
> STDERR_FILENO
&& vty
->wfd
!= vty
->fd
)
2217 if (vty
->fd
> STDERR_FILENO
)
2219 if (vty
->fd
== STDIN_FILENO
)
2222 XFREE(MTYPE_VTY
, vty
->buf
);
2225 vty
->error
->del
= vty_error_delete
;
2226 list_delete(&vty
->error
);
2229 /* Check configure. */
2230 vty_config_exit(vty
);
2233 XFREE(MTYPE_VTY
, vty
);
2239 /* When time out occur output message then close connection. */
2240 static int vty_timeout(struct thread
*thread
)
2244 vty
= THREAD_ARG(thread
);
2248 buffer_reset(vty
->lbuf
);
2249 buffer_reset(vty
->obuf
);
2250 vty_out(vty
, "\nVty connection is timed out.\n");
2252 /* Close connection. */
2253 vty
->status
= VTY_CLOSE
;
2259 /* Read up configuration file from file_name. */
2260 static void vty_read_file(struct nb_config
*config
, FILE *confp
)
2264 struct vty_error
*ve
;
2265 struct listnode
*node
;
2266 unsigned int line_num
= 0;
2269 /* vty_close won't close stderr; if some config command prints
2270 * something it'll end up there. (not ideal; it'd be beter if output
2271 * from a file-load went to logging instead. Also note that if this
2272 * function is called after daemonizing, stderr will be /dev/null.)
2274 * vty->fd will be -1 from vty_new()
2276 vty
->wfd
= STDERR_FILENO
;
2277 vty
->type
= VTY_FILE
;
2278 vty
->node
= CONFIG_NODE
;
2281 vty
->candidate_config
= config
;
2283 vty
->private_config
= true;
2284 vty
->candidate_config
= nb_config_new(NULL
);
2287 /* Execute configuration file */
2288 ret
= config_from_file(vty
, confp
, &line_num
);
2290 /* Flush any previous errors before printing messages below */
2291 buffer_flush_all(vty
->obuf
, vty
->wfd
);
2293 if (!((ret
== CMD_SUCCESS
) || (ret
== CMD_ERR_NOTHING_TODO
))) {
2294 const char *message
= NULL
;
2298 case CMD_ERR_AMBIGUOUS
:
2299 message
= "Ambiguous command";
2301 case CMD_ERR_NO_MATCH
:
2302 message
= "No such command";
2305 message
= "Command returned Warning";
2307 case CMD_WARNING_CONFIG_FAILED
:
2308 message
= "Command returned Warning Config Failed";
2310 case CMD_ERR_INCOMPLETE
:
2311 message
= "Command returned Incomplete";
2313 case CMD_ERR_EXEED_ARGC_MAX
:
2315 "Command exceeded maximum number of Arguments";
2318 message
= "Command returned unhandled error message";
2322 for (ALL_LIST_ELEMENTS_RO(vty
->error
, node
, ve
)) {
2323 nl
= strchr(ve
->error_buf
, '\n');
2326 flog_err(EC_LIB_VTY
, "ERROR: %s on config line %u: %s",
2327 message
, ve
->line_num
, ve
->error_buf
);
2332 * Automatically commit the candidate configuration after
2333 * reading the configuration file.
2335 if (config
== NULL
&& vty
->candidate_config
2336 && frr_get_cli_mode() == FRR_CLI_TRANSACTIONAL
) {
2337 ret
= nb_candidate_commit(vty
->candidate_config
, NB_CLIENT_CLI
,
2338 vty
, true, "Read configuration file",
2340 if (ret
!= NB_OK
&& ret
!= NB_ERR_NO_CHANGES
)
2341 zlog_err("%s: failed to read configuration file.",
2348 static FILE *vty_use_backup_config(const char *fullpath
)
2350 char *fullpath_sav
, *fullpath_tmp
;
2356 size_t fullpath_sav_sz
= strlen(fullpath
) + strlen(CONF_BACKUP_EXT
) + 1;
2357 fullpath_sav
= malloc(fullpath_sav_sz
);
2358 strlcpy(fullpath_sav
, fullpath
, fullpath_sav_sz
);
2359 strlcat(fullpath_sav
, CONF_BACKUP_EXT
, fullpath_sav_sz
);
2361 sav
= open(fullpath_sav
, O_RDONLY
);
2367 fullpath_tmp
= malloc(strlen(fullpath
) + 8);
2368 sprintf(fullpath_tmp
, "%s.XXXXXX", fullpath
);
2370 /* Open file to configuration write. */
2371 tmp
= mkstemp(fullpath_tmp
);
2375 if (fchmod(tmp
, CONFIGFILE_MASK
) != 0)
2378 while ((c
= read(sav
, buffer
, 512)) > 0) {
2379 if (write(tmp
, buffer
, c
) <= 0)
2385 if (rename(fullpath_tmp
, fullpath
) == 0)
2386 ret
= fopen(fullpath
, "r");
2388 unlink(fullpath_tmp
);
2393 unlink(fullpath_tmp
);
2403 /* Read up configuration file from file_name. */
2404 bool vty_read_config(struct nb_config
*config
, const char *config_file
,
2405 char *config_default_dir
)
2407 char cwd
[MAXPATHLEN
];
2409 const char *fullpath
;
2411 bool read_success
= false;
2413 /* If -f flag specified. */
2414 if (config_file
!= NULL
) {
2415 if (!IS_DIRECTORY_SEP(config_file
[0])) {
2416 if (getcwd(cwd
, MAXPATHLEN
) == NULL
) {
2419 "%s: failure to determine Current Working Directory %d!",
2421 goto tmp_free_and_out
;
2423 tmp
= XMALLOC(MTYPE_TMP
,
2424 strlen(cwd
) + strlen(config_file
) + 2);
2425 sprintf(tmp
, "%s/%s", cwd
, config_file
);
2428 fullpath
= config_file
;
2430 confp
= fopen(fullpath
, "r");
2432 if (confp
== NULL
) {
2434 EC_LIB_BACKUP_CONFIG
,
2435 "%s: failed to open configuration file %s: %s, checking backup",
2436 __func__
, fullpath
, safe_strerror(errno
));
2438 confp
= vty_use_backup_config(fullpath
);
2441 EC_LIB_BACKUP_CONFIG
,
2442 "WARNING: using backup configuration file!");
2446 "%s: can't open configuration file [%s]",
2447 __func__
, config_file
);
2448 goto tmp_free_and_out
;
2453 host_config_set(config_default_dir
);
2457 struct stat conf_stat
;
2459 /* !!!!PLEASE LEAVE!!!!
2460 * This is NEEDED for use with vtysh -b, or else you can get
2461 * a real configuration food fight with a lot garbage in the
2462 * merged configuration file it creates coming from the per
2463 * daemon configuration files. This also allows the daemons
2464 * to start if there default configuration file is not
2465 * present or ignore them, as needed when using vtysh -b to
2466 * configure the daemons at boot - MAG
2469 /* Stat for vtysh Zebra.conf, if found startup and wait for
2470 * boot configuration
2473 if (strstr(config_default_dir
, "vtysh") == NULL
) {
2474 ret
= stat(integrate_default
, &conf_stat
);
2476 read_success
= true;
2477 goto tmp_free_and_out
;
2481 confp
= fopen(config_default_dir
, "r");
2482 if (confp
== NULL
) {
2485 "%s: failed to open configuration file %s: %s, checking backup",
2486 __func__
, config_default_dir
,
2487 safe_strerror(errno
));
2489 confp
= vty_use_backup_config(config_default_dir
);
2492 EC_LIB_BACKUP_CONFIG
,
2493 "WARNING: using backup configuration file!");
2494 fullpath
= config_default_dir
;
2496 flog_err(EC_LIB_VTY
,
2497 "can't open configuration file [%s]",
2498 config_default_dir
);
2499 goto tmp_free_and_out
;
2502 fullpath
= config_default_dir
;
2505 vty_read_file(config
, confp
);
2506 read_success
= true;
2510 host_config_set(fullpath
);
2513 XFREE(MTYPE_TMP
, tmp
);
2515 return read_success
;
2518 /* Small utility function which output log to the VTY. */
2519 void vty_log(const char *level
, const char *proto_str
, const char *msg
,
2520 struct timestamp_control
*ctl
)
2528 for (i
= 0; i
< vector_active(vtyvec
); i
++)
2529 if ((vty
= vector_slot(vtyvec
, i
)) != NULL
)
2531 vty_log_out(vty
, level
, proto_str
, msg
, ctl
);
2534 /* Async-signal-safe version of vty_log for fixed strings. */
2535 void vty_log_fixed(char *buf
, size_t len
)
2538 struct iovec iov
[2];
2539 char crlf
[4] = "\r\n";
2541 /* vty may not have been initialised */
2545 iov
[0].iov_base
= buf
;
2546 iov
[0].iov_len
= len
;
2547 iov
[1].iov_base
= crlf
;
2550 for (i
= 0; i
< vector_active(vtyvec
); i
++) {
2552 if (((vty
= vector_slot(vtyvec
, i
)) != NULL
) && vty
->monitor
)
2553 /* N.B. We don't care about the return code, since
2555 most likely just about to die anyway. */
2556 if (writev(vty
->wfd
, iov
, 2) == -1) {
2557 fprintf(stderr
, "Failure to writev: %d\n",
2564 int vty_config_enter(struct vty
*vty
, bool private_config
, bool exclusive
)
2566 if (exclusive
&& nb_running_lock(NB_CLIENT_CLI
, vty
)) {
2567 vty_out(vty
, "%% Configuration is locked by other client\n");
2571 vty
->node
= CONFIG_NODE
;
2573 vty
->private_config
= private_config
;
2574 vty
->xpath_index
= 0;
2576 pthread_rwlock_rdlock(&running_config
->lock
);
2578 if (private_config
) {
2579 vty
->candidate_config
= nb_config_dup(running_config
);
2580 vty
->candidate_config_base
=
2581 nb_config_dup(running_config
);
2583 "Warning: uncommitted changes will be discarded on exit.\n\n");
2585 vty
->candidate_config
= vty_shared_candidate_config
;
2586 if (frr_get_cli_mode() == FRR_CLI_TRANSACTIONAL
)
2587 vty
->candidate_config_base
=
2588 nb_config_dup(running_config
);
2591 pthread_rwlock_unlock(&running_config
->lock
);
2596 void vty_config_exit(struct vty
*vty
)
2598 /* Check if there's a pending confirmed commit. */
2599 if (vty
->t_confirmed_commit_timeout
) {
2601 "WARNING: exiting with a pending confirmed commit. Rolling back to previous configuration.\n\n");
2602 nb_cli_confirmed_commit_rollback(vty
);
2603 nb_cli_confirmed_commit_clean(vty
);
2606 (void)nb_running_unlock(NB_CLIENT_CLI
, vty
);
2608 if (vty
->candidate_config
) {
2609 if (vty
->private_config
)
2610 nb_config_free(vty
->candidate_config
);
2611 vty
->candidate_config
= NULL
;
2613 if (vty
->candidate_config_base
) {
2614 nb_config_free(vty
->candidate_config_base
);
2615 vty
->candidate_config_base
= NULL
;
2618 vty
->config
= false;
2621 /* Master of the threads. */
2622 static struct thread_master
*vty_master
;
2624 static void vty_event(enum event event
, int sock
, struct vty
*vty
)
2626 struct thread
*vty_serv_thread
= NULL
;
2630 vty_serv_thread
= thread_add_read(vty_master
, vty_accept
, vty
,
2632 vector_set_index(Vvty_serv_thread
, sock
, vty_serv_thread
);
2636 vty_serv_thread
= thread_add_read(vty_master
, vtysh_accept
, vty
,
2638 vector_set_index(Vvty_serv_thread
, sock
, vty_serv_thread
);
2641 thread_add_read(vty_master
, vtysh_read
, vty
, sock
,
2645 thread_add_write(vty_master
, vtysh_write
, vty
, sock
,
2650 thread_add_read(vty_master
, vty_read
, vty
, sock
, &vty
->t_read
);
2652 /* Time out treatment. */
2653 if (vty
->v_timeout
) {
2654 THREAD_OFF(vty
->t_timeout
);
2655 thread_add_timer(vty_master
, vty_timeout
, vty
,
2656 vty
->v_timeout
, &vty
->t_timeout
);
2660 thread_add_write(vty_master
, vty_flush
, vty
, sock
,
2663 case VTY_TIMEOUT_RESET
:
2664 THREAD_OFF(vty
->t_timeout
);
2666 thread_add_timer(vty_master
, vty_timeout
, vty
,
2667 vty
->v_timeout
, &vty
->t_timeout
);
2672 DEFUN_NOSH (config_who
,
2675 "Display who is on vty\n")
2680 for (i
= 0; i
< vector_active(vtyvec
); i
++)
2681 if ((v
= vector_slot(vtyvec
, i
)) != NULL
)
2682 vty_out(vty
, "%svty[%d] connected from %s.\n",
2683 v
->config
? "*" : " ", i
, v
->address
);
2687 /* Move to vty configuration mode. */
2688 DEFUN_NOSH (line_vty
,
2691 "Configure a terminal line\n"
2692 "Virtual terminal\n")
2694 vty
->node
= VTY_NODE
;
2698 /* Set time out value. */
2699 static int exec_timeout(struct vty
*vty
, const char *min_str
,
2700 const char *sec_str
)
2702 unsigned long timeout
= 0;
2704 /* min_str and sec_str are already checked by parser. So it must be
2705 all digit string. */
2707 timeout
= strtol(min_str
, NULL
, 10);
2711 timeout
+= strtol(sec_str
, NULL
, 10);
2713 vty_timeout_val
= timeout
;
2714 vty
->v_timeout
= timeout
;
2715 vty_event(VTY_TIMEOUT_RESET
, 0, vty
);
2721 DEFUN (exec_timeout_min
,
2722 exec_timeout_min_cmd
,
2723 "exec-timeout (0-35791)",
2724 "Set timeout value\n"
2725 "Timeout value in minutes\n")
2728 return exec_timeout(vty
, argv
[idx_number
]->arg
, NULL
);
2731 DEFUN (exec_timeout_sec
,
2732 exec_timeout_sec_cmd
,
2733 "exec-timeout (0-35791) (0-2147483)",
2734 "Set the EXEC timeout\n"
2735 "Timeout in minutes\n"
2736 "Timeout in seconds\n")
2739 int idx_number_2
= 2;
2740 return exec_timeout(vty
, argv
[idx_number
]->arg
,
2741 argv
[idx_number_2
]->arg
);
2744 DEFUN (no_exec_timeout
,
2745 no_exec_timeout_cmd
,
2748 "Set the EXEC timeout\n")
2750 return exec_timeout(vty
, NULL
, NULL
);
2753 /* Set vty access class. */
2754 DEFUN (vty_access_class
,
2755 vty_access_class_cmd
,
2756 "access-class WORD",
2757 "Filter connections based on an IP access list\n"
2761 if (vty_accesslist_name
)
2762 XFREE(MTYPE_VTY
, vty_accesslist_name
);
2764 vty_accesslist_name
= XSTRDUP(MTYPE_VTY
, argv
[idx_word
]->arg
);
2769 /* Clear vty access class. */
2770 DEFUN (no_vty_access_class
,
2771 no_vty_access_class_cmd
,
2772 "no access-class [WORD]",
2774 "Filter connections based on an IP access list\n"
2778 const char *accesslist
= (argc
== 3) ? argv
[idx_word
]->arg
: NULL
;
2779 if (!vty_accesslist_name
2780 || (argc
== 3 && strcmp(vty_accesslist_name
, accesslist
))) {
2781 vty_out(vty
, "Access-class is not currently applied to vty\n");
2782 return CMD_WARNING_CONFIG_FAILED
;
2785 XFREE(MTYPE_VTY
, vty_accesslist_name
);
2787 vty_accesslist_name
= NULL
;
2792 /* Set vty access class. */
2793 DEFUN (vty_ipv6_access_class
,
2794 vty_ipv6_access_class_cmd
,
2795 "ipv6 access-class WORD",
2797 "Filter connections based on an IP access list\n"
2798 "IPv6 access list\n")
2801 if (vty_ipv6_accesslist_name
)
2802 XFREE(MTYPE_VTY
, vty_ipv6_accesslist_name
);
2804 vty_ipv6_accesslist_name
= XSTRDUP(MTYPE_VTY
, argv
[idx_word
]->arg
);
2809 /* Clear vty access class. */
2810 DEFUN (no_vty_ipv6_access_class
,
2811 no_vty_ipv6_access_class_cmd
,
2812 "no ipv6 access-class [WORD]",
2815 "Filter connections based on an IP access list\n"
2816 "IPv6 access list\n")
2819 const char *accesslist
= (argc
== 4) ? argv
[idx_word
]->arg
: NULL
;
2821 if (!vty_ipv6_accesslist_name
2822 || (argc
== 4 && strcmp(vty_ipv6_accesslist_name
, accesslist
))) {
2824 "IPv6 access-class is not currently applied to vty\n");
2825 return CMD_WARNING_CONFIG_FAILED
;
2828 XFREE(MTYPE_VTY
, vty_ipv6_accesslist_name
);
2830 vty_ipv6_accesslist_name
= NULL
;
2839 "Enable password checking\n")
2841 no_password_check
= 0;
2845 DEFUN (no_vty_login
,
2849 "Enable password checking\n")
2851 no_password_check
= 1;
2855 DEFUN (service_advanced_vty
,
2856 service_advanced_vty_cmd
,
2857 "service advanced-vty",
2858 "Set up miscellaneous service\n"
2859 "Enable advanced mode vty interface\n")
2865 DEFUN (no_service_advanced_vty
,
2866 no_service_advanced_vty_cmd
,
2867 "no service advanced-vty",
2869 "Set up miscellaneous service\n"
2870 "Enable advanced mode vty interface\n")
2876 DEFUN_NOSH (terminal_monitor
,
2877 terminal_monitor_cmd
,
2879 "Set terminal line parameters\n"
2880 "Copy debug output to the current terminal line\n")
2886 DEFUN_NOSH (terminal_no_monitor
,
2887 terminal_no_monitor_cmd
,
2888 "terminal no monitor",
2889 "Set terminal line parameters\n"
2891 "Copy debug output to the current terminal line\n")
2897 DEFUN_NOSH (no_terminal_monitor
,
2898 no_terminal_monitor_cmd
,
2899 "no terminal monitor",
2901 "Set terminal line parameters\n"
2902 "Copy debug output to the current terminal line\n")
2904 return terminal_no_monitor(self
, vty
, argc
, argv
);
2908 DEFUN_NOSH (show_history
,
2912 "Display the session command history\n")
2916 for (index
= vty
->hindex
+ 1; index
!= vty
->hindex
;) {
2917 if (index
== VTY_MAXHIST
) {
2922 if (vty
->hist
[index
] != NULL
)
2923 vty_out(vty
, " %s\n", vty
->hist
[index
]);
2932 DEFPY (log_commands
,
2934 "[no] log commands",
2937 "Log all commands\n")
2940 if (do_log_commands_perm
) {
2942 "Daemon started with permanent logging turned on for commands, ignoring\n");
2946 do_log_commands
= false;
2948 do_log_commands
= true;
2953 /* Display current configuration. */
2954 static int vty_config_write(struct vty
*vty
)
2956 vty_out(vty
, "line vty\n");
2958 if (vty_accesslist_name
)
2959 vty_out(vty
, " access-class %s\n", vty_accesslist_name
);
2961 if (vty_ipv6_accesslist_name
)
2962 vty_out(vty
, " ipv6 access-class %s\n",
2963 vty_ipv6_accesslist_name
);
2966 if (vty_timeout_val
!= VTY_TIMEOUT_DEFAULT
)
2967 vty_out(vty
, " exec-timeout %ld %ld\n", vty_timeout_val
/ 60,
2968 vty_timeout_val
% 60);
2971 if (no_password_check
)
2972 vty_out(vty
, " no login\n");
2974 if (do_log_commands
)
2975 vty_out(vty
, "log commands\n");
2977 vty_out(vty
, "!\n");
2982 struct cmd_node vty_node
= {
2983 VTY_NODE
, "%s(config-line)# ", 1,
2986 /* Reset all VTY status. */
2987 void vty_reset(void)
2991 struct thread
*vty_serv_thread
;
2993 for (i
= 0; i
< vector_active(vtyvec
); i
++)
2994 if ((vty
= vector_slot(vtyvec
, i
)) != NULL
) {
2995 buffer_reset(vty
->lbuf
);
2996 buffer_reset(vty
->obuf
);
2997 vty
->status
= VTY_CLOSE
;
3001 for (i
= 0; i
< vector_active(Vvty_serv_thread
); i
++)
3002 if ((vty_serv_thread
= vector_slot(Vvty_serv_thread
, i
))
3004 THREAD_OFF(vty_serv_thread
);
3005 vector_slot(Vvty_serv_thread
, i
) = NULL
;
3009 vty_timeout_val
= VTY_TIMEOUT_DEFAULT
;
3011 if (vty_accesslist_name
) {
3012 XFREE(MTYPE_VTY
, vty_accesslist_name
);
3013 vty_accesslist_name
= NULL
;
3016 if (vty_ipv6_accesslist_name
) {
3017 XFREE(MTYPE_VTY
, vty_ipv6_accesslist_name
);
3018 vty_ipv6_accesslist_name
= NULL
;
3022 static void vty_save_cwd(void)
3026 c
= getcwd(vty_cwd
, sizeof(vty_cwd
));
3030 * At this point if these go wrong, more than likely
3031 * the whole world is coming down around us
3032 * Hence not worrying about it too much.
3034 if (!chdir(SYSCONFDIR
)) {
3035 flog_err_sys(EC_LIB_SYSTEM_CALL
,
3036 "Failure to chdir to %s, errno: %d",
3040 if (getcwd(vty_cwd
, sizeof(vty_cwd
)) == NULL
) {
3041 flog_err_sys(EC_LIB_SYSTEM_CALL
,
3042 "Failure to getcwd, errno: %d", errno
);
3048 char *vty_get_cwd(void)
3053 int vty_shell(struct vty
*vty
)
3055 return vty
->type
== VTY_SHELL
? 1 : 0;
3058 int vty_shell_serv(struct vty
*vty
)
3060 return vty
->type
== VTY_SHELL_SERV
? 1 : 0;
3063 void vty_init_vtysh(void)
3065 vtyvec
= vector_init(VECTOR_MIN_SIZE
);
3068 /* Install vty's own commands like `who' command. */
3069 void vty_init(struct thread_master
*master_thread
, bool do_command_logging
)
3071 /* For further configuration read, preserve current directory. */
3074 vtyvec
= vector_init(VECTOR_MIN_SIZE
);
3076 vty_master
= master_thread
;
3078 atexit(vty_stdio_atexit
);
3080 /* Initilize server thread vector. */
3081 Vvty_serv_thread
= vector_init(VECTOR_MIN_SIZE
);
3083 /* Install bgp top node. */
3084 install_node(&vty_node
, vty_config_write
);
3086 install_element(VIEW_NODE
, &config_who_cmd
);
3087 install_element(VIEW_NODE
, &show_history_cmd
);
3088 install_element(CONFIG_NODE
, &line_vty_cmd
);
3089 install_element(CONFIG_NODE
, &service_advanced_vty_cmd
);
3090 install_element(CONFIG_NODE
, &no_service_advanced_vty_cmd
);
3091 install_element(CONFIG_NODE
, &show_history_cmd
);
3092 install_element(CONFIG_NODE
, &log_commands_cmd
);
3094 if (do_command_logging
) {
3095 do_log_commands
= true;
3096 do_log_commands_perm
= true;
3099 install_element(ENABLE_NODE
, &terminal_monitor_cmd
);
3100 install_element(ENABLE_NODE
, &terminal_no_monitor_cmd
);
3101 install_element(ENABLE_NODE
, &no_terminal_monitor_cmd
);
3103 install_default(VTY_NODE
);
3104 install_element(VTY_NODE
, &exec_timeout_min_cmd
);
3105 install_element(VTY_NODE
, &exec_timeout_sec_cmd
);
3106 install_element(VTY_NODE
, &no_exec_timeout_cmd
);
3107 install_element(VTY_NODE
, &vty_access_class_cmd
);
3108 install_element(VTY_NODE
, &no_vty_access_class_cmd
);
3109 install_element(VTY_NODE
, &vty_login_cmd
);
3110 install_element(VTY_NODE
, &no_vty_login_cmd
);
3111 install_element(VTY_NODE
, &vty_ipv6_access_class_cmd
);
3112 install_element(VTY_NODE
, &no_vty_ipv6_access_class_cmd
);
3115 void vty_terminate(void)
3117 memset(vty_cwd
, 0x00, sizeof(vty_cwd
));
3119 if (vtyvec
&& Vvty_serv_thread
) {
3121 vector_free(vtyvec
);
3122 vector_free(Vvty_serv_thread
);
3124 Vvty_serv_thread
= NULL
;