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Commit | Line | Data |
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718e3744 | 1 | /* |
2 | * Virtual terminal [aka TeletYpe] interface routine. | |
3 | * Copyright (C) 1997, 98 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
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 | |
10 | * later version. | |
11 | * | |
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. | |
16 | * | |
896014f4 DL |
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 | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
fe6b47b9 QY |
24 | #include <lib/version.h> |
25 | #include <sys/types.h> | |
beee9b4a DS |
26 | #include <sys/types.h> |
27 | #ifdef HAVE_LIBPCREPOSIX | |
28 | #include <pcreposix.h> | |
29 | #else | |
fe6b47b9 | 30 | #include <regex.h> |
beee9b4a | 31 | #endif /* HAVE_LIBPCREPOSIX */ |
6ef6e4f0 | 32 | #include <stdio.h> |
fe6b47b9 | 33 | |
718e3744 | 34 | #include "linklist.h" |
b21b19c5 | 35 | #include "thread.h" |
718e3744 | 36 | #include "buffer.h" |
718e3744 | 37 | #include "command.h" |
38 | #include "sockunion.h" | |
718e3744 | 39 | #include "memory.h" |
718e3744 | 40 | #include "log.h" |
41 | #include "prefix.h" | |
42 | #include "filter.h" | |
b21b19c5 | 43 | #include "vty.h" |
edd7c245 | 44 | #include "privs.h" |
9fc7ebf1 | 45 | #include "network.h" |
b85120bc | 46 | #include "libfrr.h" |
fe6b47b9 | 47 | #include "frrstr.h" |
ab99c8e2 | 48 | #include "lib_errors.h" |
1c2facd1 | 49 | #include "northbound_cli.h" |
807f5b98 | 50 | #include "printfrr.h" |
a8dfd147 | 51 | #include "json.h" |
9fc7ebf1 | 52 | |
53 | #include <arpa/telnet.h> | |
b510a06e | 54 | #include <termios.h> |
718e3744 | 55 | |
2950f5da DS |
56 | #ifndef VTYSH_EXTRACT_PL |
57 | #include "lib/vty_clippy.c" | |
58 | #endif | |
59 | ||
bf8d3d6a | 60 | DEFINE_MTYPE_STATIC(LIB, VTY, "VTY"); |
26ae7cc2 | 61 | DEFINE_MTYPE_STATIC(LIB, VTY_SERV, "VTY server"); |
bf8d3d6a DL |
62 | DEFINE_MTYPE_STATIC(LIB, VTY_OUT_BUF, "VTY output buffer"); |
63 | DEFINE_MTYPE_STATIC(LIB, VTY_HIST, "VTY history"); | |
4a1ab8e4 | 64 | |
43dd8caf DL |
65 | DECLARE_DLIST(vtys, struct vty, itm); |
66 | ||
718e3744 | 67 | /* Vty events */ |
55a70ffb | 68 | enum vty_event { |
d62a17ae | 69 | VTY_SERV, |
70 | VTY_READ, | |
71 | VTY_WRITE, | |
72 | VTY_TIMEOUT_RESET, | |
718e3744 | 73 | #ifdef VTYSH |
d62a17ae | 74 | VTYSH_SERV, |
75 | VTYSH_READ, | |
76 | VTYSH_WRITE | |
718e3744 | 77 | #endif /* VTYSH */ |
78 | }; | |
79 | ||
26ae7cc2 DL |
80 | PREDECL_DLIST(vtyservs); |
81 | ||
82 | struct vty_serv { | |
83 | struct vtyservs_item itm; | |
84 | ||
85 | int sock; | |
86 | bool vtysh; | |
87 | ||
88 | struct thread *t_accept; | |
89 | }; | |
90 | ||
91 | DECLARE_DLIST(vtyservs, struct vty_serv, itm); | |
92 | ||
55a70ffb DS |
93 | static void vty_event_serv(enum vty_event event, struct vty_serv *); |
94 | static void vty_event(enum vty_event, struct vty *); | |
718e3744 | 95 | |
96 | /* Extern host structure from command.c */ | |
97 | extern struct host host; | |
6b0655a2 | 98 | |
26ae7cc2 DL |
99 | /* active listeners */ |
100 | static struct vtyservs_head vty_servs[1] = {INIT_DLIST(vty_servs[0])}; | |
101 | ||
43dd8caf DL |
102 | /* active connections */ |
103 | static struct vtys_head vty_sessions[1] = {INIT_DLIST(vty_sessions[0])}; | |
104 | static struct vtys_head vtysh_sessions[1] = {INIT_DLIST(vtysh_sessions[0])}; | |
763725cd | 105 | |
718e3744 | 106 | /* Vty timeout value. */ |
107 | static unsigned long vty_timeout_val = VTY_TIMEOUT_DEFAULT; | |
108 | ||
109 | /* Vty access-class command */ | |
110 | static char *vty_accesslist_name = NULL; | |
111 | ||
112 | /* Vty access-calss for IPv6. */ | |
113 | static char *vty_ipv6_accesslist_name = NULL; | |
114 | ||
718e3744 | 115 | /* Current directory. */ |
1b3e9a21 | 116 | static char vty_cwd[MAXPATHLEN]; |
718e3744 | 117 | |
718e3744 | 118 | /* Login password check. */ |
119 | static int no_password_check = 0; | |
120 | ||
121 | /* Integrated configuration file path */ | |
c17faa4b | 122 | static char integrate_default[] = SYSCONFDIR INTEGRATE_DEFAULT_CONFIG; |
718e3744 | 123 | |
2950f5da DS |
124 | static bool do_log_commands; |
125 | static bool do_log_commands_perm; | |
6b0655a2 | 126 | |
2071aa0e DL |
127 | void vty_frame(struct vty *vty, const char *format, ...) |
128 | { | |
129 | va_list args; | |
130 | ||
131 | va_start(args, format); | |
c7179009 DL |
132 | vsnprintfrr(vty->frame + vty->frame_pos, |
133 | sizeof(vty->frame) - vty->frame_pos, format, args); | |
2071aa0e DL |
134 | vty->frame_pos = strlen(vty->frame); |
135 | va_end(args); | |
136 | } | |
137 | ||
138 | void vty_endframe(struct vty *vty, const char *endtext) | |
139 | { | |
140 | if (vty->frame_pos == 0 && endtext) | |
141 | vty_out(vty, "%s", endtext); | |
142 | vty->frame_pos = 0; | |
143 | } | |
144 | ||
fe6b47b9 QY |
145 | bool vty_set_include(struct vty *vty, const char *regexp) |
146 | { | |
147 | int errcode; | |
148 | bool ret = true; | |
149 | char errbuf[256]; | |
150 | ||
8224c6cf | 151 | if (!regexp) { |
152 | if (vty->filter) { | |
153 | regfree(&vty->include); | |
154 | vty->filter = false; | |
155 | } | |
fe6b47b9 QY |
156 | return true; |
157 | } | |
158 | ||
159 | errcode = regcomp(&vty->include, regexp, | |
160 | REG_EXTENDED | REG_NEWLINE | REG_NOSUB); | |
161 | if (errcode) { | |
162 | ret = false; | |
511942ba IR |
163 | regerror(errcode, &vty->include, errbuf, sizeof(errbuf)); |
164 | vty_out(vty, "%% Regex compilation error: %s\n", errbuf); | |
fe6b47b9 QY |
165 | } else { |
166 | vty->filter = true; | |
167 | } | |
168 | ||
169 | return ret; | |
170 | } | |
171 | ||
83eba583 | 172 | /* VTY standard output function. */ |
d62a17ae | 173 | int vty_out(struct vty *vty, const char *format, ...) |
174 | { | |
175 | va_list args; | |
807f5b98 | 176 | ssize_t len; |
d62a17ae | 177 | char buf[1024]; |
fa3bf3a2 | 178 | char *p = NULL; |
fe6b47b9 | 179 | char *filtered; |
2c12c904 DL |
180 | /* format string may contain %m, keep errno intact for printfrr */ |
181 | int saved_errno = errno; | |
d62a17ae | 182 | |
2071aa0e DL |
183 | if (vty->frame_pos) { |
184 | vty->frame_pos = 0; | |
185 | vty_out(vty, "%s", vty->frame); | |
186 | } | |
187 | ||
2cddf2ff | 188 | va_start(args, format); |
2c12c904 | 189 | errno = saved_errno; |
807f5b98 | 190 | p = vasnprintfrr(MTYPE_VTY_OUT_BUF, buf, sizeof(buf), format, args); |
2cddf2ff | 191 | va_end(args); |
d62a17ae | 192 | |
807f5b98 | 193 | len = strlen(p); |
2cddf2ff QY |
194 | |
195 | /* filter buffer */ | |
196 | if (vty->filter) { | |
0b42d81a QY |
197 | vector lines = frrstr_split_vec(p, "\n"); |
198 | ||
199 | /* Place first value in the cache */ | |
200 | char *firstline = vector_slot(lines, 0); | |
201 | buffer_put(vty->lbuf, (uint8_t *) firstline, strlen(firstline)); | |
202 | ||
203 | /* If our split returned more than one entry, time to filter */ | |
204 | if (vector_active(lines) > 1) { | |
205 | /* | |
206 | * returned string is MTYPE_TMP so it matches the MTYPE | |
207 | * of everything else in the vector | |
208 | */ | |
209 | char *bstr = buffer_getstr(vty->lbuf); | |
210 | buffer_reset(vty->lbuf); | |
211 | XFREE(MTYPE_TMP, lines->index[0]); | |
212 | vector_set_index(lines, 0, bstr); | |
213 | frrstr_filter_vec(lines, &vty->include); | |
214 | vector_compact(lines); | |
215 | /* | |
216 | * Consider the string "foo\n". If the regex is an empty string | |
217 | * and the line ended with a newline, then the vector will look | |
218 | * like: | |
219 | * | |
220 | * [0]: 'foo' | |
221 | * [1]: '' | |
222 | * | |
223 | * If the regex isn't empty, the vector will look like: | |
224 | * | |
225 | * [0]: 'foo' | |
226 | * | |
227 | * In this case we'd like to preserve the newline, so we add | |
228 | * the empty string [1] as in the first example. | |
229 | */ | |
230 | if (p[strlen(p) - 1] == '\n' && vector_active(lines) > 0 | |
231 | && strlen(vector_slot(lines, vector_active(lines) - 1))) | |
232 | vector_set(lines, XSTRDUP(MTYPE_TMP, "")); | |
233 | ||
234 | filtered = frrstr_join_vec(lines, "\n"); | |
235 | } | |
236 | else { | |
237 | filtered = NULL; | |
238 | } | |
5d806ec6 | 239 | |
2cddf2ff | 240 | frrstr_strvec_free(lines); |
0b42d81a | 241 | |
2cddf2ff QY |
242 | } else { |
243 | filtered = p; | |
244 | } | |
d62a17ae | 245 | |
0b42d81a QY |
246 | if (!filtered) |
247 | goto done; | |
248 | ||
2cddf2ff QY |
249 | switch (vty->type) { |
250 | case VTY_TERM: | |
251 | /* print with crlf replacement */ | |
252 | buffer_put_crlf(vty->obuf, (uint8_t *)filtered, | |
253 | strlen(filtered)); | |
254 | break; | |
255 | case VTY_SHELL: | |
9934e1c9 | 256 | if (vty->of) { |
257 | fprintf(vty->of, "%s", filtered); | |
258 | fflush(vty->of); | |
259 | } else if (vty->of_saved) { | |
260 | fprintf(vty->of_saved, "%s", filtered); | |
261 | fflush(vty->of_saved); | |
262 | } | |
2cddf2ff QY |
263 | break; |
264 | case VTY_SHELL_SERV: | |
265 | case VTY_FILE: | |
266 | default: | |
267 | /* print without crlf replacement */ | |
268 | buffer_put(vty->obuf, (uint8_t *)filtered, strlen(filtered)); | |
269 | break; | |
d62a17ae | 270 | } |
271 | ||
0b42d81a QY |
272 | done: |
273 | ||
274 | if (vty->filter && filtered) | |
2cddf2ff QY |
275 | XFREE(MTYPE_TMP, filtered); |
276 | ||
277 | /* If p is not different with buf, it is allocated buffer. */ | |
278 | if (p != buf) | |
279 | XFREE(MTYPE_VTY_OUT_BUF, p); | |
280 | ||
d62a17ae | 281 | return len; |
282 | } | |
283 | ||
a8dfd147 DL |
284 | int vty_json(struct vty *vty, struct json_object *json) |
285 | { | |
286 | const char *text; | |
287 | ||
288 | if (!json) | |
289 | return CMD_SUCCESS; | |
290 | ||
291 | text = json_object_to_json_string_ext( | |
292 | json, JSON_C_TO_STRING_PRETTY | JSON_C_TO_STRING_NOSLASHESCAPE); | |
293 | vty_out(vty, "%s\n", text); | |
294 | json_object_free(json); | |
295 | ||
296 | return CMD_SUCCESS; | |
297 | } | |
298 | ||
718e3744 | 299 | /* Output current time to the vty. */ |
d62a17ae | 300 | void vty_time_print(struct vty *vty, int cr) |
718e3744 | 301 | { |
e36f61b5 | 302 | char buf[FRR_TIMESTAMP_LEN]; |
d0bfb22c | 303 | |
e36f61b5 DS |
304 | if (frr_timestamp(0, buf, sizeof(buf)) == 0) { |
305 | zlog_info("frr_timestamp error"); | |
d62a17ae | 306 | return; |
307 | } | |
308 | if (cr) | |
309 | vty_out(vty, "%s\n", buf); | |
310 | else | |
311 | vty_out(vty, "%s ", buf); | |
718e3744 | 312 | |
d62a17ae | 313 | return; |
718e3744 | 314 | } |
315 | ||
316 | /* Say hello to vty interface. */ | |
d62a17ae | 317 | void vty_hello(struct vty *vty) |
318 | { | |
319 | if (host.motdfile) { | |
320 | FILE *f; | |
321 | char buf[4096]; | |
322 | ||
323 | f = fopen(host.motdfile, "r"); | |
324 | if (f) { | |
325 | while (fgets(buf, sizeof(buf), f)) { | |
326 | char *s; | |
327 | /* work backwards to ignore trailling isspace() | |
328 | */ | |
329 | for (s = buf + strlen(buf); | |
fefa5e0f DL |
330 | (s > buf) && isspace((unsigned char)s[-1]); |
331 | s--) | |
d62a17ae | 332 | ; |
333 | *s = '\0'; | |
334 | vty_out(vty, "%s\n", buf); | |
335 | } | |
336 | fclose(f); | |
337 | } else | |
338 | vty_out(vty, "MOTD file not found\n"); | |
339 | } else if (host.motd) | |
340 | vty_out(vty, "%s", host.motd); | |
718e3744 | 341 | } |
342 | ||
343 | /* Put out prompt and wait input from user. */ | |
d62a17ae | 344 | static void vty_prompt(struct vty *vty) |
718e3744 | 345 | { |
d62a17ae | 346 | if (vty->type == VTY_TERM) { |
60466a63 | 347 | vty_out(vty, cmd_prompt(vty->node), cmd_hostname_get()); |
d62a17ae | 348 | } |
718e3744 | 349 | } |
350 | ||
351 | /* Send WILL TELOPT_ECHO to remote server. */ | |
d62a17ae | 352 | static void vty_will_echo(struct vty *vty) |
718e3744 | 353 | { |
d62a17ae | 354 | unsigned char cmd[] = {IAC, WILL, TELOPT_ECHO, '\0'}; |
355 | vty_out(vty, "%s", cmd); | |
718e3744 | 356 | } |
357 | ||
358 | /* Make suppress Go-Ahead telnet option. */ | |
d62a17ae | 359 | static void vty_will_suppress_go_ahead(struct vty *vty) |
718e3744 | 360 | { |
d62a17ae | 361 | unsigned char cmd[] = {IAC, WILL, TELOPT_SGA, '\0'}; |
362 | vty_out(vty, "%s", cmd); | |
718e3744 | 363 | } |
364 | ||
365 | /* Make don't use linemode over telnet. */ | |
d62a17ae | 366 | static void vty_dont_linemode(struct vty *vty) |
718e3744 | 367 | { |
d62a17ae | 368 | unsigned char cmd[] = {IAC, DONT, TELOPT_LINEMODE, '\0'}; |
369 | vty_out(vty, "%s", cmd); | |
718e3744 | 370 | } |
371 | ||
372 | /* Use window size. */ | |
d62a17ae | 373 | static void vty_do_window_size(struct vty *vty) |
718e3744 | 374 | { |
d62a17ae | 375 | unsigned char cmd[] = {IAC, DO, TELOPT_NAWS, '\0'}; |
376 | vty_out(vty, "%s", cmd); | |
718e3744 | 377 | } |
378 | ||
718e3744 | 379 | /* Authentication of vty */ |
d62a17ae | 380 | static void vty_auth(struct vty *vty, char *buf) |
381 | { | |
382 | char *passwd = NULL; | |
383 | enum node_type next_node = 0; | |
384 | int fail; | |
d62a17ae | 385 | |
386 | switch (vty->node) { | |
387 | case AUTH_NODE: | |
388 | if (host.encrypt) | |
389 | passwd = host.password_encrypt; | |
390 | else | |
391 | passwd = host.password; | |
392 | if (host.advanced) | |
393 | next_node = host.enable ? VIEW_NODE : ENABLE_NODE; | |
394 | else | |
395 | next_node = VIEW_NODE; | |
396 | break; | |
397 | case AUTH_ENABLE_NODE: | |
398 | if (host.encrypt) | |
399 | passwd = host.enable_encrypt; | |
400 | else | |
401 | passwd = host.enable; | |
402 | next_node = ENABLE_NODE; | |
403 | break; | |
404 | } | |
405 | ||
406 | if (passwd) { | |
407 | if (host.encrypt) | |
408 | fail = strcmp(crypt(buf, passwd), passwd); | |
409 | else | |
410 | fail = strcmp(buf, passwd); | |
411 | } else | |
412 | fail = 1; | |
413 | ||
414 | if (!fail) { | |
415 | vty->fail = 0; | |
416 | vty->node = next_node; /* Success ! */ | |
417 | } else { | |
418 | vty->fail++; | |
419 | if (vty->fail >= 3) { | |
420 | if (vty->node == AUTH_NODE) { | |
421 | vty_out(vty, | |
422 | "%% Bad passwords, too many failures!\n"); | |
423 | vty->status = VTY_CLOSE; | |
424 | } else { | |
425 | /* AUTH_ENABLE_NODE */ | |
426 | vty->fail = 0; | |
427 | vty_out(vty, | |
428 | "%% Bad enable passwords, too many failures!\n"); | |
429 | vty->status = VTY_CLOSE; | |
430 | } | |
431 | } | |
432 | } | |
718e3744 | 433 | } |
434 | ||
435 | /* Command execution over the vty interface. */ | |
d62a17ae | 436 | static int vty_command(struct vty *vty, char *buf) |
437 | { | |
438 | int ret; | |
d62a17ae | 439 | const char *protocolname; |
440 | char *cp = NULL; | |
441 | ||
b575a12c A |
442 | assert(vty); |
443 | ||
d62a17ae | 444 | /* |
445 | * Log non empty command lines | |
446 | */ | |
447 | if (do_log_commands) | |
448 | cp = buf; | |
449 | if (cp != NULL) { | |
450 | /* Skip white spaces. */ | |
fefa5e0f | 451 | while (isspace((unsigned char)*cp) && *cp != '\0') |
d62a17ae | 452 | cp++; |
453 | } | |
454 | if (cp != NULL && *cp != '\0') { | |
d62a17ae | 455 | char vty_str[VTY_BUFSIZ]; |
456 | char prompt_str[VTY_BUFSIZ]; | |
457 | ||
458 | /* format the base vty info */ | |
43dd8caf DL |
459 | snprintf(vty_str, sizeof(vty_str), "vty[%d]@%s", vty->fd, |
460 | vty->address); | |
d62a17ae | 461 | |
462 | /* format the prompt */ | |
463 | snprintf(prompt_str, sizeof(prompt_str), cmd_prompt(vty->node), | |
464 | vty_str); | |
465 | ||
466 | /* now log the command */ | |
3ec8b5b8 | 467 | zlog_notice("%s%s", prompt_str, buf); |
d62a17ae | 468 | } |
718e3744 | 469 | |
45f01188 DL |
470 | RUSAGE_T before; |
471 | RUSAGE_T after; | |
472 | unsigned long walltime, cputime; | |
473 | ||
474 | /* cmd_execute() may change cputime_enabled if we're executing the | |
475 | * "service cputime-stats" command, which can result in nonsensical | |
476 | * and very confusing warnings | |
477 | */ | |
478 | bool cputime_enabled_here = cputime_enabled; | |
479 | ||
480 | GETRUSAGE(&before); | |
481 | ||
482 | ret = cmd_execute(vty, buf, NULL, 0); | |
483 | ||
484 | GETRUSAGE(&after); | |
485 | ||
486 | walltime = thread_consumed_time(&after, &before, &cputime); | |
487 | ||
488 | if (cputime_enabled_here && cputime_enabled && cputime_threshold | |
489 | && cputime > cputime_threshold) | |
490 | /* Warn about CPU hog that must be fixed. */ | |
491 | flog_warn(EC_LIB_SLOW_THREAD_CPU, | |
492 | "CPU HOG: command took %lums (cpu time %lums): %s", | |
493 | walltime / 1000, cputime / 1000, buf); | |
494 | else if (walltime_threshold && walltime > walltime_threshold) | |
495 | flog_warn(EC_LIB_SLOW_THREAD_WALL, | |
496 | "STARVATION: command took %lums (cpu time %lums): %s", | |
497 | walltime / 1000, cputime / 1000, buf); | |
498 | ||
499 | /* Get the name of the protocol if any */ | |
500 | protocolname = frr_protoname; | |
924b9229 | 501 | |
d62a17ae | 502 | if (ret != CMD_SUCCESS) |
503 | switch (ret) { | |
504 | case CMD_WARNING: | |
505 | if (vty->type == VTY_FILE) | |
506 | vty_out(vty, "Warning...\n"); | |
507 | break; | |
508 | case CMD_ERR_AMBIGUOUS: | |
509 | vty_out(vty, "%% Ambiguous command.\n"); | |
510 | break; | |
511 | case CMD_ERR_NO_MATCH: | |
512 | vty_out(vty, "%% [%s] Unknown command: %s\n", | |
513 | protocolname, buf); | |
514 | break; | |
515 | case CMD_ERR_INCOMPLETE: | |
516 | vty_out(vty, "%% Command incomplete.\n"); | |
517 | break; | |
518 | } | |
d62a17ae | 519 | |
520 | return ret; | |
718e3744 | 521 | } |
6b0655a2 | 522 | |
9fc7ebf1 | 523 | static const char telnet_backward_char = 0x08; |
524 | static const char telnet_space_char = ' '; | |
718e3744 | 525 | |
526 | /* Basic function to write buffer to vty. */ | |
d62a17ae | 527 | static void vty_write(struct vty *vty, const char *buf, size_t nbytes) |
718e3744 | 528 | { |
d62a17ae | 529 | if ((vty->node == AUTH_NODE) || (vty->node == AUTH_ENABLE_NODE)) |
530 | return; | |
718e3744 | 531 | |
d62a17ae | 532 | /* Should we do buffering here ? And make vty_flush (vty) ? */ |
533 | buffer_put(vty->obuf, buf, nbytes); | |
718e3744 | 534 | } |
535 | ||
718e3744 | 536 | /* Basic function to insert character into vty. */ |
d62a17ae | 537 | static void vty_self_insert(struct vty *vty, char c) |
718e3744 | 538 | { |
d62a17ae | 539 | int i; |
540 | int length; | |
718e3744 | 541 | |
d62a17ae | 542 | if (vty->length + 1 >= VTY_BUFSIZ) |
543 | return; | |
2af38873 | 544 | |
d62a17ae | 545 | length = vty->length - vty->cp; |
546 | memmove(&vty->buf[vty->cp + 1], &vty->buf[vty->cp], length); | |
547 | vty->buf[vty->cp] = c; | |
718e3744 | 548 | |
d62a17ae | 549 | vty_write(vty, &vty->buf[vty->cp], length + 1); |
550 | for (i = 0; i < length; i++) | |
551 | vty_write(vty, &telnet_backward_char, 1); | |
718e3744 | 552 | |
d62a17ae | 553 | vty->cp++; |
554 | vty->length++; | |
d1e4a518 | 555 | |
d62a17ae | 556 | vty->buf[vty->length] = '\0'; |
718e3744 | 557 | } |
558 | ||
559 | /* Self insert character 'c' in overwrite mode. */ | |
d62a17ae | 560 | static void vty_self_insert_overwrite(struct vty *vty, char c) |
718e3744 | 561 | { |
d62a17ae | 562 | if (vty->cp == vty->length) { |
563 | vty_self_insert(vty, c); | |
564 | return; | |
565 | } | |
718e3744 | 566 | |
d62a17ae | 567 | vty->buf[vty->cp++] = c; |
568 | vty_write(vty, &c, 1); | |
718e3744 | 569 | } |
570 | ||
2af38873 QY |
571 | /** |
572 | * Insert a string into vty->buf at the current cursor position. | |
573 | * | |
574 | * If the resultant string would be larger than VTY_BUFSIZ it is | |
575 | * truncated to fit. | |
576 | */ | |
d62a17ae | 577 | static void vty_insert_word_overwrite(struct vty *vty, char *str) |
718e3744 | 578 | { |
d62a17ae | 579 | if (vty->cp == VTY_BUFSIZ) |
580 | return; | |
d1e4a518 | 581 | |
d62a17ae | 582 | size_t nwrite = MIN((int)strlen(str), VTY_BUFSIZ - vty->cp - 1); |
583 | memcpy(&vty->buf[vty->cp], str, nwrite); | |
584 | vty->cp += nwrite; | |
585 | vty->length = MAX(vty->cp, vty->length); | |
586 | vty->buf[vty->length] = '\0'; | |
587 | vty_write(vty, str, nwrite); | |
718e3744 | 588 | } |
589 | ||
590 | /* Forward character. */ | |
d62a17ae | 591 | static void vty_forward_char(struct vty *vty) |
718e3744 | 592 | { |
d62a17ae | 593 | if (vty->cp < vty->length) { |
594 | vty_write(vty, &vty->buf[vty->cp], 1); | |
595 | vty->cp++; | |
596 | } | |
718e3744 | 597 | } |
598 | ||
599 | /* Backward character. */ | |
d62a17ae | 600 | static void vty_backward_char(struct vty *vty) |
718e3744 | 601 | { |
d62a17ae | 602 | if (vty->cp > 0) { |
603 | vty->cp--; | |
604 | vty_write(vty, &telnet_backward_char, 1); | |
605 | } | |
718e3744 | 606 | } |
607 | ||
608 | /* Move to the beginning of the line. */ | |
d62a17ae | 609 | static void vty_beginning_of_line(struct vty *vty) |
718e3744 | 610 | { |
d62a17ae | 611 | while (vty->cp) |
612 | vty_backward_char(vty); | |
718e3744 | 613 | } |
614 | ||
615 | /* Move to the end of the line. */ | |
d62a17ae | 616 | static void vty_end_of_line(struct vty *vty) |
718e3744 | 617 | { |
d62a17ae | 618 | while (vty->cp < vty->length) |
619 | vty_forward_char(vty); | |
718e3744 | 620 | } |
621 | ||
d62a17ae | 622 | static void vty_kill_line_from_beginning(struct vty *); |
623 | static void vty_redraw_line(struct vty *); | |
718e3744 | 624 | |
625 | /* Print command line history. This function is called from | |
626 | vty_next_line and vty_previous_line. */ | |
d62a17ae | 627 | static void vty_history_print(struct vty *vty) |
718e3744 | 628 | { |
d62a17ae | 629 | int length; |
718e3744 | 630 | |
d62a17ae | 631 | vty_kill_line_from_beginning(vty); |
718e3744 | 632 | |
d62a17ae | 633 | /* Get previous line from history buffer */ |
634 | length = strlen(vty->hist[vty->hp]); | |
635 | memcpy(vty->buf, vty->hist[vty->hp], length); | |
636 | vty->cp = vty->length = length; | |
637 | vty->buf[vty->length] = '\0'; | |
718e3744 | 638 | |
d62a17ae | 639 | /* Redraw current line */ |
640 | vty_redraw_line(vty); | |
718e3744 | 641 | } |
642 | ||
643 | /* Show next command line history. */ | |
d62a17ae | 644 | static void vty_next_line(struct vty *vty) |
718e3744 | 645 | { |
d62a17ae | 646 | int try_index; |
718e3744 | 647 | |
d62a17ae | 648 | if (vty->hp == vty->hindex) |
649 | return; | |
718e3744 | 650 | |
d62a17ae | 651 | /* Try is there history exist or not. */ |
652 | try_index = vty->hp; | |
653 | if (try_index == (VTY_MAXHIST - 1)) | |
654 | try_index = 0; | |
655 | else | |
656 | try_index++; | |
718e3744 | 657 | |
d62a17ae | 658 | /* If there is not history return. */ |
659 | if (vty->hist[try_index] == NULL) | |
660 | return; | |
661 | else | |
662 | vty->hp = try_index; | |
718e3744 | 663 | |
d62a17ae | 664 | vty_history_print(vty); |
718e3744 | 665 | } |
666 | ||
667 | /* Show previous command line history. */ | |
d62a17ae | 668 | static void vty_previous_line(struct vty *vty) |
718e3744 | 669 | { |
d62a17ae | 670 | int try_index; |
718e3744 | 671 | |
d62a17ae | 672 | try_index = vty->hp; |
673 | if (try_index == 0) | |
674 | try_index = VTY_MAXHIST - 1; | |
675 | else | |
676 | try_index--; | |
718e3744 | 677 | |
d62a17ae | 678 | if (vty->hist[try_index] == NULL) |
679 | return; | |
680 | else | |
681 | vty->hp = try_index; | |
718e3744 | 682 | |
d62a17ae | 683 | vty_history_print(vty); |
718e3744 | 684 | } |
685 | ||
686 | /* This function redraw all of the command line character. */ | |
d62a17ae | 687 | static void vty_redraw_line(struct vty *vty) |
718e3744 | 688 | { |
d62a17ae | 689 | vty_write(vty, vty->buf, vty->length); |
690 | vty->cp = vty->length; | |
718e3744 | 691 | } |
692 | ||
693 | /* Forward word. */ | |
d62a17ae | 694 | static void vty_forward_word(struct vty *vty) |
718e3744 | 695 | { |
d62a17ae | 696 | while (vty->cp != vty->length && vty->buf[vty->cp] != ' ') |
697 | vty_forward_char(vty); | |
d0bfb22c | 698 | |
d62a17ae | 699 | while (vty->cp != vty->length && vty->buf[vty->cp] == ' ') |
700 | vty_forward_char(vty); | |
718e3744 | 701 | } |
702 | ||
703 | /* Backward word without skipping training space. */ | |
d62a17ae | 704 | static void vty_backward_pure_word(struct vty *vty) |
718e3744 | 705 | { |
d62a17ae | 706 | while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ') |
707 | vty_backward_char(vty); | |
718e3744 | 708 | } |
709 | ||
710 | /* Backward word. */ | |
d62a17ae | 711 | static void vty_backward_word(struct vty *vty) |
718e3744 | 712 | { |
d62a17ae | 713 | while (vty->cp > 0 && vty->buf[vty->cp - 1] == ' ') |
714 | vty_backward_char(vty); | |
718e3744 | 715 | |
d62a17ae | 716 | while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ') |
717 | vty_backward_char(vty); | |
718e3744 | 718 | } |
719 | ||
720 | /* When '^D' is typed at the beginning of the line we move to the down | |
721 | level. */ | |
d62a17ae | 722 | static void vty_down_level(struct vty *vty) |
718e3744 | 723 | { |
d62a17ae | 724 | vty_out(vty, "\n"); |
725 | cmd_exit(vty); | |
726 | vty_prompt(vty); | |
727 | vty->cp = 0; | |
718e3744 | 728 | } |
729 | ||
730 | /* When '^Z' is received from vty, move down to the enable mode. */ | |
d62a17ae | 731 | static void vty_end_config(struct vty *vty) |
732 | { | |
733 | vty_out(vty, "\n"); | |
734 | ||
cf09d3ca | 735 | if (vty->config) { |
f344c66e | 736 | vty_config_exit(vty); |
d62a17ae | 737 | vty->node = ENABLE_NODE; |
d62a17ae | 738 | } |
739 | ||
740 | vty_prompt(vty); | |
741 | vty->cp = 0; | |
718e3744 | 742 | } |
743 | ||
03bad95a | 744 | /* Delete a character at the current point. */ |
d62a17ae | 745 | static void vty_delete_char(struct vty *vty) |
718e3744 | 746 | { |
d62a17ae | 747 | int i; |
748 | int size; | |
718e3744 | 749 | |
d62a17ae | 750 | if (vty->length == 0) { |
751 | vty_down_level(vty); | |
752 | return; | |
753 | } | |
718e3744 | 754 | |
d62a17ae | 755 | if (vty->cp == vty->length) |
756 | return; /* completion need here? */ | |
718e3744 | 757 | |
d62a17ae | 758 | size = vty->length - vty->cp; |
718e3744 | 759 | |
d62a17ae | 760 | vty->length--; |
761 | memmove(&vty->buf[vty->cp], &vty->buf[vty->cp + 1], size - 1); | |
762 | vty->buf[vty->length] = '\0'; | |
d0bfb22c | 763 | |
d62a17ae | 764 | if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE) |
765 | return; | |
718e3744 | 766 | |
d62a17ae | 767 | vty_write(vty, &vty->buf[vty->cp], size - 1); |
768 | vty_write(vty, &telnet_space_char, 1); | |
718e3744 | 769 | |
d62a17ae | 770 | for (i = 0; i < size; i++) |
771 | vty_write(vty, &telnet_backward_char, 1); | |
718e3744 | 772 | } |
773 | ||
774 | /* Delete a character before the point. */ | |
d62a17ae | 775 | static void vty_delete_backward_char(struct vty *vty) |
718e3744 | 776 | { |
d62a17ae | 777 | if (vty->cp == 0) |
778 | return; | |
718e3744 | 779 | |
d62a17ae | 780 | vty_backward_char(vty); |
781 | vty_delete_char(vty); | |
718e3744 | 782 | } |
783 | ||
784 | /* Kill rest of line from current point. */ | |
d62a17ae | 785 | static void vty_kill_line(struct vty *vty) |
718e3744 | 786 | { |
d62a17ae | 787 | int i; |
788 | int size; | |
718e3744 | 789 | |
d62a17ae | 790 | size = vty->length - vty->cp; |
d0bfb22c | 791 | |
d62a17ae | 792 | if (size == 0) |
793 | return; | |
718e3744 | 794 | |
d62a17ae | 795 | for (i = 0; i < size; i++) |
796 | vty_write(vty, &telnet_space_char, 1); | |
797 | for (i = 0; i < size; i++) | |
798 | vty_write(vty, &telnet_backward_char, 1); | |
718e3744 | 799 | |
d62a17ae | 800 | memset(&vty->buf[vty->cp], 0, size); |
801 | vty->length = vty->cp; | |
718e3744 | 802 | } |
803 | ||
804 | /* Kill line from the beginning. */ | |
d62a17ae | 805 | static void vty_kill_line_from_beginning(struct vty *vty) |
718e3744 | 806 | { |
d62a17ae | 807 | vty_beginning_of_line(vty); |
808 | vty_kill_line(vty); | |
718e3744 | 809 | } |
810 | ||
811 | /* Delete a word before the point. */ | |
d62a17ae | 812 | static void vty_forward_kill_word(struct vty *vty) |
718e3744 | 813 | { |
d62a17ae | 814 | while (vty->cp != vty->length && vty->buf[vty->cp] == ' ') |
815 | vty_delete_char(vty); | |
816 | while (vty->cp != vty->length && vty->buf[vty->cp] != ' ') | |
817 | vty_delete_char(vty); | |
718e3744 | 818 | } |
819 | ||
820 | /* Delete a word before the point. */ | |
d62a17ae | 821 | static void vty_backward_kill_word(struct vty *vty) |
718e3744 | 822 | { |
d62a17ae | 823 | while (vty->cp > 0 && vty->buf[vty->cp - 1] == ' ') |
824 | vty_delete_backward_char(vty); | |
825 | while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ') | |
826 | vty_delete_backward_char(vty); | |
718e3744 | 827 | } |
828 | ||
829 | /* Transpose chars before or at the point. */ | |
d62a17ae | 830 | static void vty_transpose_chars(struct vty *vty) |
718e3744 | 831 | { |
d62a17ae | 832 | char c1, c2; |
718e3744 | 833 | |
d62a17ae | 834 | /* If length is short or point is near by the beginning of line then |
835 | return. */ | |
836 | if (vty->length < 2 || vty->cp < 1) | |
837 | return; | |
718e3744 | 838 | |
d62a17ae | 839 | /* In case of point is located at the end of the line. */ |
840 | if (vty->cp == vty->length) { | |
841 | c1 = vty->buf[vty->cp - 1]; | |
842 | c2 = vty->buf[vty->cp - 2]; | |
718e3744 | 843 | |
d62a17ae | 844 | vty_backward_char(vty); |
845 | vty_backward_char(vty); | |
846 | vty_self_insert_overwrite(vty, c1); | |
847 | vty_self_insert_overwrite(vty, c2); | |
848 | } else { | |
849 | c1 = vty->buf[vty->cp]; | |
850 | c2 = vty->buf[vty->cp - 1]; | |
718e3744 | 851 | |
d62a17ae | 852 | vty_backward_char(vty); |
853 | vty_self_insert_overwrite(vty, c1); | |
854 | vty_self_insert_overwrite(vty, c2); | |
855 | } | |
718e3744 | 856 | } |
857 | ||
858 | /* Do completion at vty interface. */ | |
d62a17ae | 859 | static void vty_complete_command(struct vty *vty) |
860 | { | |
861 | int i; | |
862 | int ret; | |
863 | char **matched = NULL; | |
864 | vector vline; | |
865 | ||
866 | if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE) | |
867 | return; | |
868 | ||
869 | vline = cmd_make_strvec(vty->buf); | |
870 | if (vline == NULL) | |
871 | return; | |
872 | ||
873 | /* In case of 'help \t'. */ | |
fefa5e0f | 874 | if (isspace((unsigned char)vty->buf[vty->length - 1])) |
d62a17ae | 875 | vector_set(vline, NULL); |
876 | ||
877 | matched = cmd_complete_command(vline, vty, &ret); | |
878 | ||
879 | cmd_free_strvec(vline); | |
880 | ||
881 | vty_out(vty, "\n"); | |
882 | switch (ret) { | |
883 | case CMD_ERR_AMBIGUOUS: | |
884 | vty_out(vty, "%% Ambiguous command.\n"); | |
885 | vty_prompt(vty); | |
886 | vty_redraw_line(vty); | |
887 | break; | |
888 | case CMD_ERR_NO_MATCH: | |
889 | /* vty_out (vty, "%% There is no matched command.\n"); */ | |
890 | vty_prompt(vty); | |
891 | vty_redraw_line(vty); | |
892 | break; | |
893 | case CMD_COMPLETE_FULL_MATCH: | |
894 | if (!matched[0]) { | |
895 | /* 2016-11-28 equinox -- need to debug, SEGV here */ | |
896 | vty_out(vty, "%% CLI BUG: FULL_MATCH with NULL str\n"); | |
897 | vty_prompt(vty); | |
898 | vty_redraw_line(vty); | |
899 | break; | |
900 | } | |
901 | vty_prompt(vty); | |
902 | vty_redraw_line(vty); | |
903 | vty_backward_pure_word(vty); | |
904 | vty_insert_word_overwrite(vty, matched[0]); | |
905 | vty_self_insert(vty, ' '); | |
906 | XFREE(MTYPE_COMPLETION, matched[0]); | |
907 | break; | |
908 | case CMD_COMPLETE_MATCH: | |
909 | vty_prompt(vty); | |
910 | vty_redraw_line(vty); | |
911 | vty_backward_pure_word(vty); | |
912 | vty_insert_word_overwrite(vty, matched[0]); | |
913 | XFREE(MTYPE_COMPLETION, matched[0]); | |
914 | break; | |
915 | case CMD_COMPLETE_LIST_MATCH: | |
916 | for (i = 0; matched[i] != NULL; i++) { | |
917 | if (i != 0 && ((i % 6) == 0)) | |
918 | vty_out(vty, "\n"); | |
919 | vty_out(vty, "%-10s ", matched[i]); | |
920 | XFREE(MTYPE_COMPLETION, matched[i]); | |
921 | } | |
922 | vty_out(vty, "\n"); | |
923 | ||
924 | vty_prompt(vty); | |
925 | vty_redraw_line(vty); | |
926 | break; | |
927 | case CMD_ERR_NOTHING_TODO: | |
928 | vty_prompt(vty); | |
929 | vty_redraw_line(vty); | |
930 | break; | |
931 | default: | |
932 | break; | |
933 | } | |
0a22ddfb | 934 | XFREE(MTYPE_TMP, matched); |
d62a17ae | 935 | } |
936 | ||
937 | static void vty_describe_fold(struct vty *vty, int cmd_width, | |
938 | unsigned int desc_width, struct cmd_token *token) | |
939 | { | |
940 | char *buf; | |
941 | const char *cmd, *p; | |
942 | int pos; | |
943 | ||
944 | cmd = token->text; | |
945 | ||
946 | if (desc_width <= 0) { | |
947 | vty_out(vty, " %-*s %s\n", cmd_width, cmd, token->desc); | |
948 | return; | |
949 | } | |
950 | ||
951 | buf = XCALLOC(MTYPE_TMP, strlen(token->desc) + 1); | |
952 | ||
953 | for (p = token->desc; strlen(p) > desc_width; p += pos + 1) { | |
954 | for (pos = desc_width; pos > 0; pos--) | |
955 | if (*(p + pos) == ' ') | |
956 | break; | |
957 | ||
958 | if (pos == 0) | |
959 | break; | |
960 | ||
fcb072cd | 961 | memcpy(buf, p, pos); |
d62a17ae | 962 | buf[pos] = '\0'; |
963 | vty_out(vty, " %-*s %s\n", cmd_width, cmd, buf); | |
964 | ||
965 | cmd = ""; | |
966 | } | |
967 | ||
968 | vty_out(vty, " %-*s %s\n", cmd_width, cmd, p); | |
969 | ||
970 | XFREE(MTYPE_TMP, buf); | |
718e3744 | 971 | } |
972 | ||
973 | /* Describe matched command function. */ | |
d62a17ae | 974 | static void vty_describe_command(struct vty *vty) |
975 | { | |
976 | int ret; | |
977 | vector vline; | |
978 | vector describe; | |
979 | unsigned int i, width, desc_width; | |
980 | struct cmd_token *token, *token_cr = NULL; | |
981 | ||
982 | vline = cmd_make_strvec(vty->buf); | |
983 | ||
984 | /* In case of '> ?'. */ | |
985 | if (vline == NULL) { | |
986 | vline = vector_init(1); | |
987 | vector_set(vline, NULL); | |
fefa5e0f | 988 | } else if (isspace((unsigned char)vty->buf[vty->length - 1])) |
d62a17ae | 989 | vector_set(vline, NULL); |
990 | ||
991 | describe = cmd_describe_command(vline, vty, &ret); | |
992 | ||
993 | vty_out(vty, "\n"); | |
994 | ||
995 | /* Ambiguous error. */ | |
996 | switch (ret) { | |
997 | case CMD_ERR_AMBIGUOUS: | |
998 | vty_out(vty, "%% Ambiguous command.\n"); | |
999 | goto out; | |
1000 | break; | |
1001 | case CMD_ERR_NO_MATCH: | |
1002 | vty_out(vty, "%% There is no matched command.\n"); | |
1003 | goto out; | |
1004 | break; | |
1005 | } | |
1006 | ||
1007 | /* Get width of command string. */ | |
1008 | width = 0; | |
1009 | for (i = 0; i < vector_active(describe); i++) | |
1010 | if ((token = vector_slot(describe, i)) != NULL) { | |
1011 | unsigned int len; | |
1012 | ||
1013 | if (token->text[0] == '\0') | |
1014 | continue; | |
1015 | ||
1016 | len = strlen(token->text); | |
1017 | ||
1018 | if (width < len) | |
1019 | width = len; | |
1020 | } | |
1021 | ||
1022 | /* Get width of description string. */ | |
1023 | desc_width = vty->width - (width + 6); | |
1024 | ||
1025 | /* Print out description. */ | |
1026 | for (i = 0; i < vector_active(describe); i++) | |
1027 | if ((token = vector_slot(describe, i)) != NULL) { | |
1028 | if (token->text[0] == '\0') | |
1029 | continue; | |
1030 | ||
1031 | if (strcmp(token->text, CMD_CR_TEXT) == 0) { | |
1032 | token_cr = token; | |
1033 | continue; | |
1034 | } | |
1035 | ||
1036 | if (!token->desc) | |
1037 | vty_out(vty, " %-s\n", token->text); | |
1038 | else if (desc_width >= strlen(token->desc)) | |
1039 | vty_out(vty, " %-*s %s\n", width, token->text, | |
1040 | token->desc); | |
1041 | else | |
1042 | vty_describe_fold(vty, width, desc_width, | |
1043 | token); | |
1044 | ||
1045 | if (IS_VARYING_TOKEN(token->type)) { | |
1046 | const char *ref = vector_slot( | |
1047 | vline, vector_active(vline) - 1); | |
1048 | ||
1049 | vector varcomps = vector_init(VECTOR_MIN_SIZE); | |
1050 | cmd_variable_complete(token, ref, varcomps); | |
1051 | ||
1052 | if (vector_active(varcomps) > 0) { | |
1053 | char *ac = cmd_variable_comp2str( | |
1054 | varcomps, vty->width); | |
1055 | vty_out(vty, "%s\n", ac); | |
1056 | XFREE(MTYPE_TMP, ac); | |
1057 | } | |
1058 | ||
1059 | vector_free(varcomps); | |
1060 | } | |
d62a17ae | 1061 | } |
1062 | ||
1063 | if ((token = token_cr)) { | |
1064 | if (!token->desc) | |
1065 | vty_out(vty, " %-s\n", token->text); | |
1066 | else if (desc_width >= strlen(token->desc)) | |
1067 | vty_out(vty, " %-*s %s\n", width, token->text, | |
1068 | token->desc); | |
1069 | else | |
1070 | vty_describe_fold(vty, width, desc_width, token); | |
1071 | } | |
718e3744 | 1072 | |
2fe8aba3 | 1073 | out: |
d62a17ae | 1074 | cmd_free_strvec(vline); |
1075 | if (describe) | |
1076 | vector_free(describe); | |
718e3744 | 1077 | |
d62a17ae | 1078 | vty_prompt(vty); |
1079 | vty_redraw_line(vty); | |
718e3744 | 1080 | } |
1081 | ||
d62a17ae | 1082 | static void vty_clear_buf(struct vty *vty) |
718e3744 | 1083 | { |
d62a17ae | 1084 | memset(vty->buf, 0, vty->max); |
718e3744 | 1085 | } |
1086 | ||
1087 | /* ^C stop current input and do not add command line to the history. */ | |
d62a17ae | 1088 | static void vty_stop_input(struct vty *vty) |
1089 | { | |
1090 | vty->cp = vty->length = 0; | |
1091 | vty_clear_buf(vty); | |
1092 | vty_out(vty, "\n"); | |
1093 | ||
cf09d3ca | 1094 | if (vty->config) { |
f344c66e | 1095 | vty_config_exit(vty); |
d62a17ae | 1096 | vty->node = ENABLE_NODE; |
d62a17ae | 1097 | } |
cf09d3ca | 1098 | |
d62a17ae | 1099 | vty_prompt(vty); |
1100 | ||
1101 | /* Set history pointer to the latest one. */ | |
1102 | vty->hp = vty->hindex; | |
718e3744 | 1103 | } |
1104 | ||
1105 | /* Add current command line to the history buffer. */ | |
d62a17ae | 1106 | static void vty_hist_add(struct vty *vty) |
718e3744 | 1107 | { |
d62a17ae | 1108 | int index; |
718e3744 | 1109 | |
d62a17ae | 1110 | if (vty->length == 0) |
1111 | return; | |
718e3744 | 1112 | |
d62a17ae | 1113 | index = vty->hindex ? vty->hindex - 1 : VTY_MAXHIST - 1; |
718e3744 | 1114 | |
d62a17ae | 1115 | /* Ignore the same string as previous one. */ |
1116 | if (vty->hist[index]) | |
1117 | if (strcmp(vty->buf, vty->hist[index]) == 0) { | |
1118 | vty->hp = vty->hindex; | |
1119 | return; | |
1120 | } | |
718e3744 | 1121 | |
d62a17ae | 1122 | /* Insert history entry. */ |
0a22ddfb | 1123 | XFREE(MTYPE_VTY_HIST, vty->hist[vty->hindex]); |
d62a17ae | 1124 | vty->hist[vty->hindex] = XSTRDUP(MTYPE_VTY_HIST, vty->buf); |
718e3744 | 1125 | |
d62a17ae | 1126 | /* History index rotation. */ |
1127 | vty->hindex++; | |
1128 | if (vty->hindex == VTY_MAXHIST) | |
1129 | vty->hindex = 0; | |
718e3744 | 1130 | |
d62a17ae | 1131 | vty->hp = vty->hindex; |
718e3744 | 1132 | } |
1133 | ||
1134 | /* #define TELNET_OPTION_DEBUG */ | |
1135 | ||
1136 | /* Get telnet window size. */ | |
d62a17ae | 1137 | static int vty_telnet_option(struct vty *vty, unsigned char *buf, int nbytes) |
718e3744 | 1138 | { |
1139 | #ifdef TELNET_OPTION_DEBUG | |
d62a17ae | 1140 | int i; |
1141 | ||
1142 | for (i = 0; i < nbytes; i++) { | |
1143 | switch (buf[i]) { | |
1144 | case IAC: | |
1145 | vty_out(vty, "IAC "); | |
1146 | break; | |
1147 | case WILL: | |
1148 | vty_out(vty, "WILL "); | |
1149 | break; | |
1150 | case WONT: | |
1151 | vty_out(vty, "WONT "); | |
1152 | break; | |
1153 | case DO: | |
1154 | vty_out(vty, "DO "); | |
1155 | break; | |
1156 | case DONT: | |
1157 | vty_out(vty, "DONT "); | |
1158 | break; | |
1159 | case SB: | |
1160 | vty_out(vty, "SB "); | |
1161 | break; | |
1162 | case SE: | |
1163 | vty_out(vty, "SE "); | |
1164 | break; | |
1165 | case TELOPT_ECHO: | |
1166 | vty_out(vty, "TELOPT_ECHO \n"); | |
1167 | break; | |
1168 | case TELOPT_SGA: | |
1169 | vty_out(vty, "TELOPT_SGA \n"); | |
1170 | break; | |
1171 | case TELOPT_NAWS: | |
1172 | vty_out(vty, "TELOPT_NAWS \n"); | |
1173 | break; | |
1174 | default: | |
1175 | vty_out(vty, "%x ", buf[i]); | |
1176 | break; | |
1177 | } | |
1178 | } | |
1179 | vty_out(vty, "\n"); | |
718e3744 | 1180 | |
1181 | #endif /* TELNET_OPTION_DEBUG */ | |
1182 | ||
d62a17ae | 1183 | switch (buf[0]) { |
1184 | case SB: | |
1185 | vty->sb_len = 0; | |
1186 | vty->iac_sb_in_progress = 1; | |
1187 | return 0; | |
d62a17ae | 1188 | case SE: { |
1189 | if (!vty->iac_sb_in_progress) | |
1190 | return 0; | |
1191 | ||
1192 | if ((vty->sb_len == 0) || (vty->sb_buf[0] == '\0')) { | |
1193 | vty->iac_sb_in_progress = 0; | |
1194 | return 0; | |
1195 | } | |
1196 | switch (vty->sb_buf[0]) { | |
1197 | case TELOPT_NAWS: | |
1198 | if (vty->sb_len != TELNET_NAWS_SB_LEN) | |
34699016 | 1199 | flog_err( |
450971aa | 1200 | EC_LIB_SYSTEM_CALL, |
3efd0893 | 1201 | "RFC 1073 violation detected: telnet NAWS option should send %d characters, but we received %lu", |
d62a17ae | 1202 | TELNET_NAWS_SB_LEN, |
d7c0a89a | 1203 | (unsigned long)vty->sb_len); |
d62a17ae | 1204 | else if (sizeof(vty->sb_buf) < TELNET_NAWS_SB_LEN) |
af4c2728 | 1205 | flog_err( |
450971aa | 1206 | EC_LIB_DEVELOPMENT, |
472878dc | 1207 | "Bug detected: sizeof(vty->sb_buf) %lu < %d, too small to handle the telnet NAWS option", |
d7c0a89a | 1208 | (unsigned long)sizeof(vty->sb_buf), |
d62a17ae | 1209 | TELNET_NAWS_SB_LEN); |
1210 | else { | |
1211 | vty->width = ((vty->sb_buf[1] << 8) | |
1212 | | vty->sb_buf[2]); | |
1213 | vty->height = ((vty->sb_buf[3] << 8) | |
1214 | | vty->sb_buf[4]); | |
9fc7ebf1 | 1215 | #ifdef TELNET_OPTION_DEBUG |
d62a17ae | 1216 | vty_out(vty, |
3efd0893 | 1217 | "TELNET NAWS window size negotiation completed: width %d, height %d\n", |
d62a17ae | 1218 | vty->width, vty->height); |
9fc7ebf1 | 1219 | #endif |
d62a17ae | 1220 | } |
1221 | break; | |
1222 | } | |
1223 | vty->iac_sb_in_progress = 0; | |
1224 | return 0; | |
d62a17ae | 1225 | } |
1226 | default: | |
1227 | break; | |
1228 | } | |
1229 | return 1; | |
718e3744 | 1230 | } |
1231 | ||
1232 | /* Execute current command line. */ | |
d62a17ae | 1233 | static int vty_execute(struct vty *vty) |
718e3744 | 1234 | { |
d62a17ae | 1235 | int ret; |
718e3744 | 1236 | |
d62a17ae | 1237 | ret = CMD_SUCCESS; |
718e3744 | 1238 | |
d62a17ae | 1239 | switch (vty->node) { |
1240 | case AUTH_NODE: | |
1241 | case AUTH_ENABLE_NODE: | |
1242 | vty_auth(vty, vty->buf); | |
1243 | break; | |
1244 | default: | |
1245 | ret = vty_command(vty, vty->buf); | |
1246 | if (vty->type == VTY_TERM) | |
1247 | vty_hist_add(vty); | |
1248 | break; | |
1249 | } | |
718e3744 | 1250 | |
d62a17ae | 1251 | /* Clear command line buffer. */ |
1252 | vty->cp = vty->length = 0; | |
1253 | vty_clear_buf(vty); | |
718e3744 | 1254 | |
d62a17ae | 1255 | if (vty->status != VTY_CLOSE) |
1256 | vty_prompt(vty); | |
718e3744 | 1257 | |
d62a17ae | 1258 | return ret; |
718e3744 | 1259 | } |
1260 | ||
1261 | #define CONTROL(X) ((X) - '@') | |
1262 | #define VTY_NORMAL 0 | |
1263 | #define VTY_PRE_ESCAPE 1 | |
1264 | #define VTY_ESCAPE 2 | |
e0a5979d | 1265 | #define VTY_CR 3 |
718e3744 | 1266 | |
1267 | /* Escape character command map. */ | |
d62a17ae | 1268 | static void vty_escape_map(unsigned char c, struct vty *vty) |
1269 | { | |
1270 | switch (c) { | |
1271 | case ('A'): | |
1272 | vty_previous_line(vty); | |
1273 | break; | |
1274 | case ('B'): | |
1275 | vty_next_line(vty); | |
1276 | break; | |
1277 | case ('C'): | |
1278 | vty_forward_char(vty); | |
1279 | break; | |
1280 | case ('D'): | |
1281 | vty_backward_char(vty); | |
1282 | break; | |
1283 | default: | |
1284 | break; | |
1285 | } | |
1286 | ||
1287 | /* Go back to normal mode. */ | |
1288 | vty->escape = VTY_NORMAL; | |
718e3744 | 1289 | } |
1290 | ||
1291 | /* Quit print out to the buffer. */ | |
d62a17ae | 1292 | static void vty_buffer_reset(struct vty *vty) |
718e3744 | 1293 | { |
d62a17ae | 1294 | buffer_reset(vty->obuf); |
0b42d81a | 1295 | buffer_reset(vty->lbuf); |
d62a17ae | 1296 | vty_prompt(vty); |
1297 | vty_redraw_line(vty); | |
718e3744 | 1298 | } |
1299 | ||
1300 | /* Read data via vty socket. */ | |
cc9f21da | 1301 | static void vty_read(struct thread *thread) |
d62a17ae | 1302 | { |
1303 | int i; | |
1304 | int nbytes; | |
1305 | unsigned char buf[VTY_READ_BUFSIZ]; | |
1306 | ||
d62a17ae | 1307 | struct vty *vty = THREAD_ARG(thread); |
d62a17ae | 1308 | |
1309 | /* Read raw data from socket */ | |
1310 | if ((nbytes = read(vty->fd, buf, VTY_READ_BUFSIZ)) <= 0) { | |
1311 | if (nbytes < 0) { | |
1312 | if (ERRNO_IO_RETRY(errno)) { | |
ab699721 | 1313 | vty_event(VTY_READ, vty); |
cc9f21da | 1314 | return; |
d62a17ae | 1315 | } |
34699016 | 1316 | flog_err( |
450971aa | 1317 | EC_LIB_SOCKET, |
d62a17ae | 1318 | "%s: read error on vty client fd %d, closing: %s", |
1319 | __func__, vty->fd, safe_strerror(errno)); | |
1320 | buffer_reset(vty->obuf); | |
0b42d81a | 1321 | buffer_reset(vty->lbuf); |
d62a17ae | 1322 | } |
1323 | vty->status = VTY_CLOSE; | |
1324 | } | |
1325 | ||
1326 | for (i = 0; i < nbytes; i++) { | |
1327 | if (buf[i] == IAC) { | |
1328 | if (!vty->iac) { | |
1329 | vty->iac = 1; | |
1330 | continue; | |
1331 | } else { | |
1332 | vty->iac = 0; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | if (vty->iac_sb_in_progress && !vty->iac) { | |
1337 | if (vty->sb_len < sizeof(vty->sb_buf)) | |
1338 | vty->sb_buf[vty->sb_len] = buf[i]; | |
1339 | vty->sb_len++; | |
1340 | continue; | |
1341 | } | |
1342 | ||
1343 | if (vty->iac) { | |
1344 | /* In case of telnet command */ | |
1345 | int ret = 0; | |
1346 | ret = vty_telnet_option(vty, buf + i, nbytes - i); | |
1347 | vty->iac = 0; | |
1348 | i += ret; | |
1349 | continue; | |
1350 | } | |
1351 | ||
1352 | ||
1353 | if (vty->status == VTY_MORE) { | |
1354 | switch (buf[i]) { | |
1355 | case CONTROL('C'): | |
1356 | case 'q': | |
1357 | case 'Q': | |
1358 | vty_buffer_reset(vty); | |
1359 | break; | |
d62a17ae | 1360 | default: |
1361 | break; | |
1362 | } | |
1363 | continue; | |
1364 | } | |
1365 | ||
1366 | /* Escape character. */ | |
1367 | if (vty->escape == VTY_ESCAPE) { | |
1368 | vty_escape_map(buf[i], vty); | |
1369 | continue; | |
1370 | } | |
1371 | ||
1372 | /* Pre-escape status. */ | |
1373 | if (vty->escape == VTY_PRE_ESCAPE) { | |
1374 | switch (buf[i]) { | |
1375 | case '[': | |
1376 | vty->escape = VTY_ESCAPE; | |
1377 | break; | |
1378 | case 'b': | |
1379 | vty_backward_word(vty); | |
1380 | vty->escape = VTY_NORMAL; | |
1381 | break; | |
1382 | case 'f': | |
1383 | vty_forward_word(vty); | |
1384 | vty->escape = VTY_NORMAL; | |
1385 | break; | |
1386 | case 'd': | |
1387 | vty_forward_kill_word(vty); | |
1388 | vty->escape = VTY_NORMAL; | |
1389 | break; | |
1390 | case CONTROL('H'): | |
1391 | case 0x7f: | |
1392 | vty_backward_kill_word(vty); | |
1393 | vty->escape = VTY_NORMAL; | |
1394 | break; | |
1395 | default: | |
1396 | vty->escape = VTY_NORMAL; | |
1397 | break; | |
1398 | } | |
1399 | continue; | |
1400 | } | |
1401 | ||
e0a5979d DL |
1402 | if (vty->escape == VTY_CR) { |
1403 | /* if we get CR+NL, the NL results in an extra empty | |
1404 | * prompt line being printed without this; just drop | |
1405 | * the NL if it immediately follows CR. | |
1406 | */ | |
1407 | vty->escape = VTY_NORMAL; | |
1408 | ||
1409 | if (buf[i] == '\n') | |
1410 | continue; | |
1411 | } | |
1412 | ||
d62a17ae | 1413 | switch (buf[i]) { |
1414 | case CONTROL('A'): | |
1415 | vty_beginning_of_line(vty); | |
1416 | break; | |
1417 | case CONTROL('B'): | |
1418 | vty_backward_char(vty); | |
1419 | break; | |
1420 | case CONTROL('C'): | |
1421 | vty_stop_input(vty); | |
1422 | break; | |
1423 | case CONTROL('D'): | |
1424 | vty_delete_char(vty); | |
1425 | break; | |
1426 | case CONTROL('E'): | |
1427 | vty_end_of_line(vty); | |
1428 | break; | |
1429 | case CONTROL('F'): | |
1430 | vty_forward_char(vty); | |
1431 | break; | |
1432 | case CONTROL('H'): | |
1433 | case 0x7f: | |
1434 | vty_delete_backward_char(vty); | |
1435 | break; | |
1436 | case CONTROL('K'): | |
1437 | vty_kill_line(vty); | |
1438 | break; | |
1439 | case CONTROL('N'): | |
1440 | vty_next_line(vty); | |
1441 | break; | |
1442 | case CONTROL('P'): | |
1443 | vty_previous_line(vty); | |
1444 | break; | |
1445 | case CONTROL('T'): | |
1446 | vty_transpose_chars(vty); | |
1447 | break; | |
1448 | case CONTROL('U'): | |
1449 | vty_kill_line_from_beginning(vty); | |
1450 | break; | |
1451 | case CONTROL('W'): | |
1452 | vty_backward_kill_word(vty); | |
1453 | break; | |
1454 | case CONTROL('Z'): | |
1455 | vty_end_config(vty); | |
1456 | break; | |
d62a17ae | 1457 | case '\r': |
e0a5979d DL |
1458 | vty->escape = VTY_CR; |
1459 | /* fallthru */ | |
1460 | case '\n': | |
d62a17ae | 1461 | vty_out(vty, "\n"); |
ab699721 | 1462 | buffer_flush_available(vty->obuf, vty->wfd); |
d62a17ae | 1463 | vty_execute(vty); |
b2dde56b DL |
1464 | |
1465 | if (vty->pass_fd != -1) { | |
1466 | close(vty->pass_fd); | |
1467 | vty->pass_fd = -1; | |
1468 | } | |
d62a17ae | 1469 | break; |
1470 | case '\t': | |
1471 | vty_complete_command(vty); | |
1472 | break; | |
1473 | case '?': | |
1474 | if (vty->node == AUTH_NODE | |
1475 | || vty->node == AUTH_ENABLE_NODE) | |
1476 | vty_self_insert(vty, buf[i]); | |
1477 | else | |
1478 | vty_describe_command(vty); | |
1479 | break; | |
1480 | case '\033': | |
1481 | if (i + 1 < nbytes && buf[i + 1] == '[') { | |
1482 | vty->escape = VTY_ESCAPE; | |
1483 | i++; | |
1484 | } else | |
1485 | vty->escape = VTY_PRE_ESCAPE; | |
1486 | break; | |
1487 | default: | |
1488 | if (buf[i] > 31 && buf[i] < 127) | |
1489 | vty_self_insert(vty, buf[i]); | |
1490 | break; | |
1491 | } | |
1492 | } | |
1493 | ||
1494 | /* Check status. */ | |
1495 | if (vty->status == VTY_CLOSE) | |
1496 | vty_close(vty); | |
1497 | else { | |
ab699721 DL |
1498 | vty_event(VTY_WRITE, vty); |
1499 | vty_event(VTY_READ, vty); | |
d62a17ae | 1500 | } |
718e3744 | 1501 | } |
1502 | ||
1503 | /* Flush buffer to the vty. */ | |
cc9f21da | 1504 | static void vty_flush(struct thread *thread) |
d62a17ae | 1505 | { |
1506 | int erase; | |
1507 | buffer_status_t flushrc; | |
d62a17ae | 1508 | struct vty *vty = THREAD_ARG(thread); |
1509 | ||
d62a17ae | 1510 | /* Tempolary disable read thread. */ |
43b8ca99 DS |
1511 | if (vty->lines == 0) |
1512 | THREAD_OFF(vty->t_read); | |
d62a17ae | 1513 | |
1514 | /* Function execution continue. */ | |
1515 | erase = ((vty->status == VTY_MORE || vty->status == VTY_MORELINE)); | |
1516 | ||
1517 | /* N.B. if width is 0, that means we don't know the window size. */ | |
1518 | if ((vty->lines == 0) || (vty->width == 0) || (vty->height == 0)) | |
ab699721 | 1519 | flushrc = buffer_flush_available(vty->obuf, vty->wfd); |
d62a17ae | 1520 | else if (vty->status == VTY_MORELINE) |
ab699721 | 1521 | flushrc = buffer_flush_window(vty->obuf, vty->wfd, vty->width, |
d62a17ae | 1522 | 1, erase, 0); |
1523 | else | |
1524 | flushrc = buffer_flush_window( | |
ab699721 | 1525 | vty->obuf, vty->wfd, vty->width, |
d62a17ae | 1526 | vty->lines >= 0 ? vty->lines : vty->height, erase, 0); |
1527 | switch (flushrc) { | |
1528 | case BUFFER_ERROR: | |
ab699721 DL |
1529 | zlog_info("buffer_flush failed on vty client fd %d/%d, closing", |
1530 | vty->fd, vty->wfd); | |
0b42d81a | 1531 | buffer_reset(vty->lbuf); |
d62a17ae | 1532 | buffer_reset(vty->obuf); |
1533 | vty_close(vty); | |
cc9f21da | 1534 | return; |
d62a17ae | 1535 | case BUFFER_EMPTY: |
1536 | if (vty->status == VTY_CLOSE) | |
1537 | vty_close(vty); | |
1538 | else { | |
1539 | vty->status = VTY_NORMAL; | |
1540 | if (vty->lines == 0) | |
ab699721 | 1541 | vty_event(VTY_READ, vty); |
d62a17ae | 1542 | } |
1543 | break; | |
1544 | case BUFFER_PENDING: | |
1545 | /* There is more data waiting to be written. */ | |
1546 | vty->status = VTY_MORE; | |
1547 | if (vty->lines == 0) | |
ab699721 | 1548 | vty_event(VTY_WRITE, vty); |
d62a17ae | 1549 | break; |
1550 | } | |
718e3744 | 1551 | } |
1552 | ||
2cddf2ff | 1553 | /* Allocate new vty struct. */ |
4d762f26 | 1554 | struct vty *vty_new(void) |
2cddf2ff QY |
1555 | { |
1556 | struct vty *new = XCALLOC(MTYPE_VTY, sizeof(struct vty)); | |
1557 | ||
1558 | new->fd = new->wfd = -1; | |
6ef6e4f0 | 1559 | new->of = stdout; |
0b42d81a | 1560 | new->lbuf = buffer_new(0); |
2cddf2ff QY |
1561 | new->obuf = buffer_new(0); /* Use default buffer size. */ |
1562 | new->buf = XCALLOC(MTYPE_VTY, VTY_BUFSIZ); | |
2cddf2ff | 1563 | new->max = VTY_BUFSIZ; |
b2dde56b | 1564 | new->pass_fd = -1; |
2cddf2ff QY |
1565 | |
1566 | return new; | |
1567 | } | |
1568 | ||
1569 | ||
b7642925 | 1570 | /* allocate and initialise vty */ |
d62a17ae | 1571 | static struct vty *vty_new_init(int vty_sock) |
1572 | { | |
1573 | struct vty *vty; | |
1574 | ||
1575 | vty = vty_new(); | |
1576 | vty->fd = vty_sock; | |
1577 | vty->wfd = vty_sock; | |
1578 | vty->type = VTY_TERM; | |
1579 | vty->node = AUTH_NODE; | |
1580 | vty->fail = 0; | |
1581 | vty->cp = 0; | |
1582 | vty_clear_buf(vty); | |
1583 | vty->length = 0; | |
1584 | memset(vty->hist, 0, sizeof(vty->hist)); | |
1585 | vty->hp = 0; | |
1586 | vty->hindex = 0; | |
1c2facd1 RW |
1587 | vty->xpath_index = 0; |
1588 | memset(vty->xpath, 0, sizeof(vty->xpath)); | |
1589 | vty->private_config = false; | |
1590 | vty->candidate_config = vty_shared_candidate_config; | |
d62a17ae | 1591 | vty->status = VTY_NORMAL; |
1592 | vty->lines = -1; | |
1593 | vty->iac = 0; | |
1594 | vty->iac_sb_in_progress = 0; | |
1595 | vty->sb_len = 0; | |
1596 | ||
43dd8caf DL |
1597 | vtys_add_tail(vty_sessions, vty); |
1598 | ||
d62a17ae | 1599 | return vty; |
b7642925 DL |
1600 | } |
1601 | ||
718e3744 | 1602 | /* Create new vty structure. */ |
d62a17ae | 1603 | static struct vty *vty_create(int vty_sock, union sockunion *su) |
1604 | { | |
1605 | char buf[SU_ADDRSTRLEN]; | |
1606 | struct vty *vty; | |
1607 | ||
1608 | sockunion2str(su, buf, SU_ADDRSTRLEN); | |
1609 | ||
1610 | /* Allocate new vty structure and set up default values. */ | |
1611 | vty = vty_new_init(vty_sock); | |
1612 | ||
1613 | /* configurable parameters not part of basic init */ | |
1614 | vty->v_timeout = vty_timeout_val; | |
9f73d2c9 | 1615 | strlcpy(vty->address, buf, sizeof(vty->address)); |
d62a17ae | 1616 | if (no_password_check) { |
1617 | if (host.advanced) | |
1618 | vty->node = ENABLE_NODE; | |
1619 | else | |
1620 | vty->node = VIEW_NODE; | |
1621 | } | |
1622 | if (host.lines >= 0) | |
1623 | vty->lines = host.lines; | |
1624 | ||
1625 | if (!no_password_check) { | |
1626 | /* Vty is not available if password isn't set. */ | |
1627 | if (host.password == NULL && host.password_encrypt == NULL) { | |
1628 | vty_out(vty, "Vty password is not set.\n"); | |
1629 | vty->status = VTY_CLOSE; | |
1630 | vty_close(vty); | |
1631 | return NULL; | |
1632 | } | |
1633 | } | |
1634 | ||
1635 | /* Say hello to the world. */ | |
1636 | vty_hello(vty); | |
1637 | if (!no_password_check) | |
1638 | vty_out(vty, "\nUser Access Verification\n\n"); | |
1639 | ||
1640 | /* Setting up terminal. */ | |
1641 | vty_will_echo(vty); | |
1642 | vty_will_suppress_go_ahead(vty); | |
1643 | ||
1644 | vty_dont_linemode(vty); | |
1645 | vty_do_window_size(vty); | |
1646 | /* vty_dont_lflow_ahead (vty); */ | |
1647 | ||
1648 | vty_prompt(vty); | |
1649 | ||
1650 | /* Add read/write thread. */ | |
ab699721 DL |
1651 | vty_event(VTY_WRITE, vty); |
1652 | vty_event(VTY_READ, vty); | |
d62a17ae | 1653 | |
1654 | return vty; | |
718e3744 | 1655 | } |
1656 | ||
b7642925 | 1657 | /* create vty for stdio */ |
b510a06e DL |
1658 | static struct termios stdio_orig_termios; |
1659 | static struct vty *stdio_vty = NULL; | |
154b9e8f DL |
1660 | static bool stdio_termios = false; |
1661 | static void (*stdio_vty_atclose)(int isexit); | |
b510a06e | 1662 | |
154b9e8f | 1663 | static void vty_stdio_reset(int isexit) |
b510a06e | 1664 | { |
d62a17ae | 1665 | if (stdio_vty) { |
154b9e8f DL |
1666 | if (stdio_termios) |
1667 | tcsetattr(0, TCSANOW, &stdio_orig_termios); | |
1668 | stdio_termios = false; | |
1669 | ||
d62a17ae | 1670 | stdio_vty = NULL; |
dbf78092 | 1671 | |
d62a17ae | 1672 | if (stdio_vty_atclose) |
154b9e8f | 1673 | stdio_vty_atclose(isexit); |
d62a17ae | 1674 | stdio_vty_atclose = NULL; |
1675 | } | |
b510a06e DL |
1676 | } |
1677 | ||
154b9e8f DL |
1678 | static void vty_stdio_atexit(void) |
1679 | { | |
1680 | vty_stdio_reset(1); | |
1681 | } | |
1682 | ||
1683 | void vty_stdio_suspend(void) | |
1684 | { | |
1685 | if (!stdio_vty) | |
1686 | return; | |
1687 | ||
43b8ca99 DS |
1688 | THREAD_OFF(stdio_vty->t_write); |
1689 | THREAD_OFF(stdio_vty->t_read); | |
1690 | THREAD_OFF(stdio_vty->t_timeout); | |
154b9e8f DL |
1691 | |
1692 | if (stdio_termios) | |
1693 | tcsetattr(0, TCSANOW, &stdio_orig_termios); | |
1694 | stdio_termios = false; | |
1695 | } | |
1696 | ||
1697 | void vty_stdio_resume(void) | |
1698 | { | |
1699 | if (!stdio_vty) | |
1700 | return; | |
1701 | ||
1702 | if (!tcgetattr(0, &stdio_orig_termios)) { | |
1703 | struct termios termios; | |
1704 | ||
1705 | termios = stdio_orig_termios; | |
1706 | termios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | |
1707 | | IGNCR | ICRNL | IXON); | |
154b9e8f DL |
1708 | termios.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN); |
1709 | termios.c_cflag &= ~(CSIZE | PARENB); | |
1710 | termios.c_cflag |= CS8; | |
1711 | tcsetattr(0, TCSANOW, &termios); | |
1712 | stdio_termios = true; | |
1713 | } | |
1714 | ||
1715 | vty_prompt(stdio_vty); | |
1716 | ||
1717 | /* Add read/write thread. */ | |
ab699721 DL |
1718 | vty_event(VTY_WRITE, stdio_vty); |
1719 | vty_event(VTY_READ, stdio_vty); | |
154b9e8f DL |
1720 | } |
1721 | ||
1722 | void vty_stdio_close(void) | |
1723 | { | |
1724 | if (!stdio_vty) | |
1725 | return; | |
1726 | vty_close(stdio_vty); | |
1727 | } | |
1728 | ||
1729 | struct vty *vty_stdio(void (*atclose)(int isexit)) | |
b7642925 | 1730 | { |
d62a17ae | 1731 | struct vty *vty; |
b7642925 | 1732 | |
d62a17ae | 1733 | /* refuse creating two vtys on stdio */ |
1734 | if (stdio_vty) | |
1735 | return NULL; | |
b510a06e | 1736 | |
d62a17ae | 1737 | vty = stdio_vty = vty_new_init(0); |
1738 | stdio_vty_atclose = atclose; | |
1739 | vty->wfd = 1; | |
b7642925 | 1740 | |
d62a17ae | 1741 | /* always have stdio vty in a known _unchangeable_ state, don't want |
1742 | * config | |
1743 | * to have any effect here to make sure scripting this works as intended | |
1744 | */ | |
1745 | vty->node = ENABLE_NODE; | |
1746 | vty->v_timeout = 0; | |
9f73d2c9 | 1747 | strlcpy(vty->address, "console", sizeof(vty->address)); |
b7642925 | 1748 | |
154b9e8f | 1749 | vty_stdio_resume(); |
d62a17ae | 1750 | return vty; |
b7642925 DL |
1751 | } |
1752 | ||
718e3744 | 1753 | /* Accept connection from the network. */ |
cc9f21da | 1754 | static void vty_accept(struct thread *thread) |
d62a17ae | 1755 | { |
26ae7cc2 | 1756 | struct vty_serv *vtyserv = THREAD_ARG(thread); |
d62a17ae | 1757 | int vty_sock; |
1758 | union sockunion su; | |
1759 | int ret; | |
1760 | unsigned int on; | |
26ae7cc2 | 1761 | int accept_sock = vtyserv->sock; |
d62a17ae | 1762 | struct prefix p; |
1763 | struct access_list *acl = NULL; | |
d62a17ae | 1764 | |
d62a17ae | 1765 | /* We continue hearing vty socket. */ |
26ae7cc2 | 1766 | vty_event_serv(VTY_SERV, vtyserv); |
d62a17ae | 1767 | |
1768 | memset(&su, 0, sizeof(union sockunion)); | |
1769 | ||
1770 | /* We can handle IPv4 or IPv6 socket. */ | |
1771 | vty_sock = sockunion_accept(accept_sock, &su); | |
1772 | if (vty_sock < 0) { | |
450971aa | 1773 | flog_err(EC_LIB_SOCKET, "can't accept vty socket : %s", |
34699016 | 1774 | safe_strerror(errno)); |
cc9f21da | 1775 | return; |
d62a17ae | 1776 | } |
1777 | set_nonblocking(vty_sock); | |
1778 | set_cloexec(vty_sock); | |
1779 | ||
0154d8ce | 1780 | if (!sockunion2hostprefix(&su, &p)) { |
07d4bb8b | 1781 | close(vty_sock); |
a0ee6f32 DS |
1782 | zlog_info("Vty unable to convert prefix from sockunion %pSU", |
1783 | &su); | |
cc9f21da | 1784 | return; |
0154d8ce | 1785 | } |
d62a17ae | 1786 | |
1787 | /* VTY's accesslist apply. */ | |
1788 | if (p.family == AF_INET && vty_accesslist_name) { | |
1789 | if ((acl = access_list_lookup(AFI_IP, vty_accesslist_name)) | |
1790 | && (access_list_apply(acl, &p) == FILTER_DENY)) { | |
a0ee6f32 | 1791 | zlog_info("Vty connection refused from %pSU", &su); |
d62a17ae | 1792 | close(vty_sock); |
cc9f21da | 1793 | return; |
d62a17ae | 1794 | } |
1795 | } | |
1796 | ||
1797 | /* VTY's ipv6 accesslist apply. */ | |
1798 | if (p.family == AF_INET6 && vty_ipv6_accesslist_name) { | |
1799 | if ((acl = access_list_lookup(AFI_IP6, | |
1800 | vty_ipv6_accesslist_name)) | |
1801 | && (access_list_apply(acl, &p) == FILTER_DENY)) { | |
a0ee6f32 | 1802 | zlog_info("Vty connection refused from %pSU", &su); |
d62a17ae | 1803 | close(vty_sock); |
cc9f21da | 1804 | return; |
d62a17ae | 1805 | } |
1806 | } | |
1807 | ||
1808 | on = 1; | |
1809 | ret = setsockopt(vty_sock, IPPROTO_TCP, TCP_NODELAY, (char *)&on, | |
1810 | sizeof(on)); | |
1811 | if (ret < 0) | |
1812 | zlog_info("can't set sockopt to vty_sock : %s", | |
1813 | safe_strerror(errno)); | |
1814 | ||
a0ee6f32 | 1815 | zlog_info("Vty connection from %pSU", &su); |
d62a17ae | 1816 | |
1817 | vty_create(vty_sock, &su); | |
d62a17ae | 1818 | } |
1819 | ||
1820 | static void vty_serv_sock_addrinfo(const char *hostname, unsigned short port) | |
1821 | { | |
1822 | int ret; | |
1823 | struct addrinfo req; | |
1824 | struct addrinfo *ainfo; | |
1825 | struct addrinfo *ainfo_save; | |
1826 | int sock; | |
1827 | char port_str[BUFSIZ]; | |
1828 | ||
6006b807 | 1829 | memset(&req, 0, sizeof(req)); |
d62a17ae | 1830 | req.ai_flags = AI_PASSIVE; |
1831 | req.ai_family = AF_UNSPEC; | |
1832 | req.ai_socktype = SOCK_STREAM; | |
772270f3 | 1833 | snprintf(port_str, sizeof(port_str), "%d", port); |
d62a17ae | 1834 | port_str[sizeof(port_str) - 1] = '\0'; |
1835 | ||
1836 | ret = getaddrinfo(hostname, port_str, &req, &ainfo); | |
1837 | ||
1838 | if (ret != 0) { | |
450971aa | 1839 | flog_err_sys(EC_LIB_SYSTEM_CALL, "getaddrinfo failed: %s", |
09c866e3 | 1840 | gai_strerror(ret)); |
d62a17ae | 1841 | exit(1); |
1842 | } | |
1843 | ||
1844 | ainfo_save = ainfo; | |
1845 | ||
1846 | do { | |
26ae7cc2 DL |
1847 | struct vty_serv *vtyserv; |
1848 | ||
d62a17ae | 1849 | if (ainfo->ai_family != AF_INET && ainfo->ai_family != AF_INET6) |
1850 | continue; | |
1851 | ||
1852 | sock = socket(ainfo->ai_family, ainfo->ai_socktype, | |
1853 | ainfo->ai_protocol); | |
1854 | if (sock < 0) | |
1855 | continue; | |
718e3744 | 1856 | |
d62a17ae | 1857 | sockopt_v6only(ainfo->ai_family, sock); |
1858 | sockopt_reuseaddr(sock); | |
1859 | sockopt_reuseport(sock); | |
1860 | set_cloexec(sock); | |
1861 | ||
1862 | ret = bind(sock, ainfo->ai_addr, ainfo->ai_addrlen); | |
1863 | if (ret < 0) { | |
1864 | close(sock); /* Avoid sd leak. */ | |
1865 | continue; | |
1866 | } | |
1867 | ||
1868 | ret = listen(sock, 3); | |
1869 | if (ret < 0) { | |
1870 | close(sock); /* Avoid sd leak. */ | |
1871 | continue; | |
1872 | } | |
1873 | ||
26ae7cc2 DL |
1874 | vtyserv = XCALLOC(MTYPE_VTY_SERV, sizeof(*vtyserv)); |
1875 | vtyserv->sock = sock; | |
1876 | vtyservs_add_tail(vty_servs, vtyserv); | |
1877 | ||
1878 | vty_event_serv(VTY_SERV, vtyserv); | |
d62a17ae | 1879 | } while ((ainfo = ainfo->ai_next) != NULL); |
1880 | ||
1881 | freeaddrinfo(ainfo_save); | |
718e3744 | 1882 | } |
718e3744 | 1883 | |
1884 | #ifdef VTYSH | |
1885 | /* For sockaddr_un. */ | |
1886 | #include <sys/un.h> | |
1887 | ||
1888 | /* VTY shell UNIX domain socket. */ | |
d62a17ae | 1889 | static void vty_serv_un(const char *path) |
1890 | { | |
26ae7cc2 | 1891 | struct vty_serv *vtyserv; |
d62a17ae | 1892 | int ret; |
1893 | int sock, len; | |
1894 | struct sockaddr_un serv; | |
1895 | mode_t old_mask; | |
1896 | struct zprivs_ids_t ids; | |
1897 | ||
1898 | /* First of all, unlink existing socket */ | |
1899 | unlink(path); | |
1900 | ||
1901 | /* Set umask */ | |
1902 | old_mask = umask(0007); | |
1903 | ||
1904 | /* Make UNIX domain socket. */ | |
1905 | sock = socket(AF_UNIX, SOCK_STREAM, 0); | |
1906 | if (sock < 0) { | |
450971aa | 1907 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1908 | "Cannot create unix stream socket: %s", |
1909 | safe_strerror(errno)); | |
d62a17ae | 1910 | return; |
1911 | } | |
1912 | ||
1913 | /* Make server socket. */ | |
6006b807 | 1914 | memset(&serv, 0, sizeof(serv)); |
d62a17ae | 1915 | serv.sun_family = AF_UNIX; |
1916 | strlcpy(serv.sun_path, path, sizeof(serv.sun_path)); | |
6f0e3f6e | 1917 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN |
d62a17ae | 1918 | len = serv.sun_len = SUN_LEN(&serv); |
718e3744 | 1919 | #else |
d62a17ae | 1920 | len = sizeof(serv.sun_family) + strlen(serv.sun_path); |
6f0e3f6e | 1921 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ |
718e3744 | 1922 | |
d62a17ae | 1923 | set_cloexec(sock); |
2da59394 | 1924 | |
d62a17ae | 1925 | ret = bind(sock, (struct sockaddr *)&serv, len); |
1926 | if (ret < 0) { | |
450971aa | 1927 | flog_err_sys(EC_LIB_SOCKET, "Cannot bind path %s: %s", path, |
09c866e3 | 1928 | safe_strerror(errno)); |
d62a17ae | 1929 | close(sock); /* Avoid sd leak. */ |
1930 | return; | |
1931 | } | |
718e3744 | 1932 | |
d62a17ae | 1933 | ret = listen(sock, 5); |
1934 | if (ret < 0) { | |
450971aa | 1935 | flog_err_sys(EC_LIB_SOCKET, "listen(fd %d) failed: %s", sock, |
09c866e3 | 1936 | safe_strerror(errno)); |
d62a17ae | 1937 | close(sock); /* Avoid sd leak. */ |
1938 | return; | |
1939 | } | |
718e3744 | 1940 | |
d62a17ae | 1941 | umask(old_mask); |
718e3744 | 1942 | |
d62a17ae | 1943 | zprivs_get_ids(&ids); |
d0bfb22c | 1944 | |
d62a17ae | 1945 | /* Hack: ids.gid_vty is actually a uint, but we stored -1 in it |
1946 | earlier for the case when we don't need to chown the file | |
1947 | type casting it here to make a compare */ | |
1948 | if ((int)ids.gid_vty > 0) { | |
1949 | /* set group of socket */ | |
1950 | if (chown(path, -1, ids.gid_vty)) { | |
450971aa | 1951 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
1952 | "vty_serv_un: could chown socket, %s", |
1953 | safe_strerror(errno)); | |
d62a17ae | 1954 | } |
1955 | } | |
edd7c245 | 1956 | |
26ae7cc2 DL |
1957 | vtyserv = XCALLOC(MTYPE_VTY_SERV, sizeof(*vtyserv)); |
1958 | vtyserv->sock = sock; | |
1959 | vtyserv->vtysh = true; | |
1960 | vtyservs_add_tail(vty_servs, vtyserv); | |
1961 | ||
1962 | vty_event_serv(VTYSH_SERV, vtyserv); | |
718e3744 | 1963 | } |
1964 | ||
1965 | /* #define VTYSH_DEBUG 1 */ | |
1966 | ||
cc9f21da | 1967 | static void vtysh_accept(struct thread *thread) |
718e3744 | 1968 | { |
26ae7cc2 DL |
1969 | struct vty_serv *vtyserv = THREAD_ARG(thread); |
1970 | int accept_sock = vtyserv->sock; | |
d62a17ae | 1971 | int sock; |
1972 | int client_len; | |
1973 | struct sockaddr_un client; | |
1974 | struct vty *vty; | |
d0bfb22c | 1975 | |
26ae7cc2 | 1976 | vty_event_serv(VTYSH_SERV, vtyserv); |
718e3744 | 1977 | |
6006b807 | 1978 | memset(&client, 0, sizeof(client)); |
d62a17ae | 1979 | client_len = sizeof(struct sockaddr_un); |
718e3744 | 1980 | |
d62a17ae | 1981 | sock = accept(accept_sock, (struct sockaddr *)&client, |
1982 | (socklen_t *)&client_len); | |
718e3744 | 1983 | |
d62a17ae | 1984 | if (sock < 0) { |
450971aa | 1985 | flog_err(EC_LIB_SOCKET, "can't accept vty socket : %s", |
34699016 | 1986 | safe_strerror(errno)); |
cc9f21da | 1987 | return; |
d62a17ae | 1988 | } |
718e3744 | 1989 | |
d62a17ae | 1990 | if (set_nonblocking(sock) < 0) { |
34699016 | 1991 | flog_err( |
450971aa | 1992 | EC_LIB_SOCKET, |
34699016 | 1993 | "vtysh_accept: could not set vty socket %d to non-blocking, %s, closing", |
d62a17ae | 1994 | sock, safe_strerror(errno)); |
1995 | close(sock); | |
cc9f21da | 1996 | return; |
d62a17ae | 1997 | } |
1998 | set_cloexec(sock); | |
2da59394 | 1999 | |
718e3744 | 2000 | #ifdef VTYSH_DEBUG |
d62a17ae | 2001 | printf("VTY shell accept\n"); |
718e3744 | 2002 | #endif /* VTYSH_DEBUG */ |
2003 | ||
d62a17ae | 2004 | vty = vty_new(); |
2005 | vty->fd = sock; | |
2006 | vty->wfd = sock; | |
2007 | vty->type = VTY_SHELL_SERV; | |
2008 | vty->node = VIEW_NODE; | |
43dd8caf | 2009 | vtys_add_tail(vtysh_sessions, vty); |
d62a17ae | 2010 | |
ab699721 | 2011 | vty_event(VTYSH_READ, vty); |
d62a17ae | 2012 | } |
2013 | ||
b2dde56b DL |
2014 | static int vtysh_do_pass_fd(struct vty *vty) |
2015 | { | |
2016 | struct iovec iov[1] = { | |
2017 | { | |
2018 | .iov_base = vty->pass_fd_status, | |
2019 | .iov_len = sizeof(vty->pass_fd_status), | |
2020 | }, | |
2021 | }; | |
2022 | union { | |
2023 | uint8_t buf[CMSG_SPACE(sizeof(int))]; | |
2024 | struct cmsghdr align; | |
2025 | } u; | |
2026 | struct msghdr mh = { | |
2027 | .msg_iov = iov, | |
2028 | .msg_iovlen = array_size(iov), | |
2029 | .msg_control = u.buf, | |
2030 | .msg_controllen = sizeof(u.buf), | |
2031 | }; | |
2032 | struct cmsghdr *cmh = CMSG_FIRSTHDR(&mh); | |
2033 | ssize_t ret; | |
2034 | ||
b4c94f8c | 2035 | memset(&u.buf, 0, sizeof(u.buf)); |
b2dde56b DL |
2036 | cmh->cmsg_level = SOL_SOCKET; |
2037 | cmh->cmsg_type = SCM_RIGHTS; | |
2038 | cmh->cmsg_len = CMSG_LEN(sizeof(int)); | |
2039 | memcpy(CMSG_DATA(cmh), &vty->pass_fd, sizeof(int)); | |
2040 | ||
2041 | ret = sendmsg(vty->wfd, &mh, 0); | |
2042 | if (ret < 0 && ERRNO_IO_RETRY(errno)) | |
2043 | return BUFFER_PENDING; | |
2044 | ||
2045 | close(vty->pass_fd); | |
2046 | vty->pass_fd = -1; | |
2047 | vty->status = VTY_NORMAL; | |
2048 | ||
2049 | if (ret <= 0) | |
2050 | return BUFFER_ERROR; | |
2051 | ||
2052 | /* resume accepting commands (suspended in vtysh_read) */ | |
2053 | vty_event(VTYSH_READ, vty); | |
2054 | ||
2055 | if ((size_t)ret < sizeof(vty->pass_fd_status)) { | |
2056 | size_t remains = sizeof(vty->pass_fd_status) - ret; | |
2057 | ||
2058 | buffer_put(vty->obuf, vty->pass_fd_status + ret, remains); | |
2059 | return BUFFER_PENDING; | |
2060 | } | |
2061 | return BUFFER_EMPTY; | |
2062 | } | |
2063 | ||
d62a17ae | 2064 | static int vtysh_flush(struct vty *vty) |
2065 | { | |
b2dde56b DL |
2066 | int ret; |
2067 | ||
2068 | ret = buffer_flush_available(vty->obuf, vty->wfd); | |
2069 | if (ret == BUFFER_EMPTY && vty->status == VTY_PASSFD) | |
2070 | ret = vtysh_do_pass_fd(vty); | |
2071 | ||
2072 | switch (ret) { | |
d62a17ae | 2073 | case BUFFER_PENDING: |
ab699721 | 2074 | vty_event(VTYSH_WRITE, vty); |
d62a17ae | 2075 | break; |
2076 | case BUFFER_ERROR: | |
450971aa | 2077 | flog_err(EC_LIB_SOCKET, "%s: write error to fd %d, closing", |
34699016 | 2078 | __func__, vty->fd); |
0b42d81a | 2079 | buffer_reset(vty->lbuf); |
d62a17ae | 2080 | buffer_reset(vty->obuf); |
2081 | vty_close(vty); | |
2082 | return -1; | |
d62a17ae | 2083 | case BUFFER_EMPTY: |
2084 | break; | |
2085 | } | |
2086 | return 0; | |
2087 | } | |
2088 | ||
b2dde56b DL |
2089 | void vty_pass_fd(struct vty *vty, int fd) |
2090 | { | |
2091 | if (vty->pass_fd != -1) | |
2092 | close(vty->pass_fd); | |
2093 | ||
2094 | vty->pass_fd = fd; | |
2095 | } | |
2096 | ||
cc9f21da | 2097 | static void vtysh_read(struct thread *thread) |
d62a17ae | 2098 | { |
2099 | int ret; | |
2100 | int sock; | |
2101 | int nbytes; | |
2102 | struct vty *vty; | |
2103 | unsigned char buf[VTY_READ_BUFSIZ]; | |
2104 | unsigned char *p; | |
d7c0a89a | 2105 | uint8_t header[4] = {0, 0, 0, 0}; |
d62a17ae | 2106 | |
2107 | sock = THREAD_FD(thread); | |
2108 | vty = THREAD_ARG(thread); | |
d62a17ae | 2109 | |
2110 | if ((nbytes = read(sock, buf, VTY_READ_BUFSIZ)) <= 0) { | |
2111 | if (nbytes < 0) { | |
2112 | if (ERRNO_IO_RETRY(errno)) { | |
ab699721 | 2113 | vty_event(VTYSH_READ, vty); |
cc9f21da | 2114 | return; |
d62a17ae | 2115 | } |
34699016 | 2116 | flog_err( |
450971aa | 2117 | EC_LIB_SOCKET, |
d62a17ae | 2118 | "%s: read failed on vtysh client fd %d, closing: %s", |
2119 | __func__, sock, safe_strerror(errno)); | |
2120 | } | |
0b42d81a | 2121 | buffer_reset(vty->lbuf); |
d62a17ae | 2122 | buffer_reset(vty->obuf); |
2123 | vty_close(vty); | |
718e3744 | 2124 | #ifdef VTYSH_DEBUG |
d62a17ae | 2125 | printf("close vtysh\n"); |
718e3744 | 2126 | #endif /* VTYSH_DEBUG */ |
cc9f21da | 2127 | return; |
d62a17ae | 2128 | } |
718e3744 | 2129 | |
2130 | #ifdef VTYSH_DEBUG | |
d62a17ae | 2131 | printf("line: %.*s\n", nbytes, buf); |
718e3744 | 2132 | #endif /* VTYSH_DEBUG */ |
2133 | ||
d62a17ae | 2134 | if (vty->length + nbytes >= VTY_BUFSIZ) { |
2135 | /* Clear command line buffer. */ | |
2136 | vty->cp = vty->length = 0; | |
2137 | vty_clear_buf(vty); | |
2138 | vty_out(vty, "%% Command is too long.\n"); | |
2139 | } else { | |
2140 | for (p = buf; p < buf + nbytes; p++) { | |
2141 | vty->buf[vty->length++] = *p; | |
2142 | if (*p == '\0') { | |
2143 | /* Pass this line to parser. */ | |
2144 | ret = vty_execute(vty); | |
2145 | /* Note that vty_execute clears the command buffer and resets | |
2146 | vty->length to 0. */ | |
2147 | ||
2148 | /* Return result. */ | |
718e3744 | 2149 | #ifdef VTYSH_DEBUG |
d62a17ae | 2150 | printf("result: %d\n", ret); |
2151 | printf("vtysh node: %d\n", vty->node); | |
718e3744 | 2152 | #endif /* VTYSH_DEBUG */ |
2153 | ||
b2dde56b DL |
2154 | if (vty->pass_fd != -1) { |
2155 | memset(vty->pass_fd_status, 0, 4); | |
2156 | vty->pass_fd_status[3] = ret; | |
2157 | vty->status = VTY_PASSFD; | |
2158 | ||
2159 | if (!vty->t_write) | |
2160 | vty_event(VTYSH_WRITE, vty); | |
2161 | ||
2162 | /* this introduces a "sequence point" | |
2163 | * command output is written normally, | |
2164 | * read processing is suspended until | |
2165 | * buffer is empty | |
2166 | * then retcode + FD is written | |
2167 | * then normal processing resumes | |
2168 | * | |
2169 | * => skip vty_event(VTYSH_READ, vty)! | |
2170 | */ | |
2171 | return; | |
2172 | } | |
2173 | ||
d62a17ae | 2174 | /* hack for asynchronous "write integrated" |
2175 | * - other commands in "buf" will be ditched | |
2176 | * - input during pending config-write is | |
2177 | * "unsupported" */ | |
2178 | if (ret == CMD_SUSPEND) | |
2179 | break; | |
95c4aff2 | 2180 | |
d62a17ae | 2181 | /* warning: watchfrr hardcodes this result write |
2182 | */ | |
2183 | header[3] = ret; | |
2184 | buffer_put(vty->obuf, header, 4); | |
9fc7ebf1 | 2185 | |
d62a17ae | 2186 | if (!vty->t_write && (vtysh_flush(vty) < 0)) |
2187 | /* Try to flush results; exit if a write | |
2188 | * error occurs. */ | |
cc9f21da | 2189 | return; |
d62a17ae | 2190 | } |
2191 | } | |
2192 | } | |
718e3744 | 2193 | |
d62a17ae | 2194 | if (vty->status == VTY_CLOSE) |
2195 | vty_close(vty); | |
2196 | else | |
ab699721 | 2197 | vty_event(VTYSH_READ, vty); |
718e3744 | 2198 | } |
49ff6d9d | 2199 | |
cc9f21da | 2200 | static void vtysh_write(struct thread *thread) |
49ff6d9d | 2201 | { |
d62a17ae | 2202 | struct vty *vty = THREAD_ARG(thread); |
49ff6d9d | 2203 | |
d62a17ae | 2204 | vtysh_flush(vty); |
49ff6d9d | 2205 | } |
2206 | ||
718e3744 | 2207 | #endif /* VTYSH */ |
2208 | ||
2209 | /* Determine address family to bind. */ | |
d62a17ae | 2210 | void vty_serv_sock(const char *addr, unsigned short port, const char *path) |
718e3744 | 2211 | { |
d62a17ae | 2212 | /* If port is set to 0, do not listen on TCP/IP at all! */ |
2213 | if (port) | |
2214 | vty_serv_sock_addrinfo(addr, port); | |
718e3744 | 2215 | |
2216 | #ifdef VTYSH | |
d62a17ae | 2217 | vty_serv_un(path); |
718e3744 | 2218 | #endif /* VTYSH */ |
2219 | } | |
2220 | ||
7ab57d19 DS |
2221 | static void vty_error_delete(void *arg) |
2222 | { | |
2223 | struct vty_error *ve = arg; | |
2224 | ||
2225 | XFREE(MTYPE_TMP, ve); | |
2226 | } | |
2227 | ||
9d0a3260 AS |
2228 | /* Close vty interface. Warning: call this only from functions that |
2229 | will be careful not to access the vty afterwards (since it has | |
2230 | now been freed). This is safest from top-level functions (called | |
2231 | directly by the thread dispatcher). */ | |
d62a17ae | 2232 | void vty_close(struct vty *vty) |
718e3744 | 2233 | { |
d62a17ae | 2234 | int i; |
2235 | bool was_stdio = false; | |
718e3744 | 2236 | |
791ded4a DL |
2237 | /* Drop out of configure / transaction if needed. */ |
2238 | vty_config_exit(vty); | |
2239 | ||
d62a17ae | 2240 | /* Cancel threads.*/ |
43b8ca99 DS |
2241 | THREAD_OFF(vty->t_read); |
2242 | THREAD_OFF(vty->t_write); | |
2243 | THREAD_OFF(vty->t_timeout); | |
718e3744 | 2244 | |
b2dde56b DL |
2245 | if (vty->pass_fd != -1) { |
2246 | close(vty->pass_fd); | |
2247 | vty->pass_fd = -1; | |
2248 | } | |
0798d276 | 2249 | zlog_live_close(&vty->live_log); |
b2dde56b | 2250 | |
d62a17ae | 2251 | /* Flush buffer. */ |
2252 | buffer_flush_all(vty->obuf, vty->wfd); | |
718e3744 | 2253 | |
d62a17ae | 2254 | /* Free input buffer. */ |
2255 | buffer_free(vty->obuf); | |
0b42d81a | 2256 | buffer_free(vty->lbuf); |
718e3744 | 2257 | |
d62a17ae | 2258 | /* Free command history. */ |
0a22ddfb QY |
2259 | for (i = 0; i < VTY_MAXHIST; i++) { |
2260 | XFREE(MTYPE_VTY_HIST, vty->hist[i]); | |
2261 | } | |
718e3744 | 2262 | |
d62a17ae | 2263 | /* Unset vector. */ |
763725cd IR |
2264 | if (vty->fd != -1) { |
2265 | if (vty->type == VTY_SHELL_SERV) | |
43dd8caf | 2266 | vtys_del(vtysh_sessions, vty); |
763725cd | 2267 | else |
43dd8caf | 2268 | vtys_del(vty_sessions, vty); |
763725cd | 2269 | } |
718e3744 | 2270 | |
d62a17ae | 2271 | if (vty->wfd > 0 && vty->type == VTY_FILE) |
2272 | fsync(vty->wfd); | |
056cfe49 | 2273 | |
10b8a9c0 DL |
2274 | /* Close socket. |
2275 | * note check is for fd > STDERR_FILENO, not fd != -1. | |
2276 | * We never close stdin/stdout/stderr here, because we may be | |
2277 | * running in foreground mode with logging to stdout. Also, | |
2278 | * additionally, we'd need to replace these fds with /dev/null. */ | |
2279 | if (vty->wfd > STDERR_FILENO && vty->wfd != vty->fd) | |
2280 | close(vty->wfd); | |
572e2644 | 2281 | if (vty->fd > STDERR_FILENO) |
d62a17ae | 2282 | close(vty->fd); |
572e2644 | 2283 | if (vty->fd == STDIN_FILENO) |
d62a17ae | 2284 | was_stdio = true; |
718e3744 | 2285 | |
0a22ddfb | 2286 | XFREE(MTYPE_VTY, vty->buf); |
718e3744 | 2287 | |
7ab57d19 DS |
2288 | if (vty->error) { |
2289 | vty->error->del = vty_error_delete; | |
2290 | list_delete(&vty->error); | |
2291 | } | |
5689fe5f | 2292 | |
d62a17ae | 2293 | /* OK free vty. */ |
2294 | XFREE(MTYPE_VTY, vty); | |
dd03f8ca | 2295 | |
d62a17ae | 2296 | if (was_stdio) |
154b9e8f | 2297 | vty_stdio_reset(0); |
718e3744 | 2298 | } |
2299 | ||
2300 | /* When time out occur output message then close connection. */ | |
cc9f21da | 2301 | static void vty_timeout(struct thread *thread) |
718e3744 | 2302 | { |
d62a17ae | 2303 | struct vty *vty; |
718e3744 | 2304 | |
d62a17ae | 2305 | vty = THREAD_ARG(thread); |
d62a17ae | 2306 | vty->v_timeout = 0; |
718e3744 | 2307 | |
d62a17ae | 2308 | /* Clear buffer*/ |
0b42d81a | 2309 | buffer_reset(vty->lbuf); |
d62a17ae | 2310 | buffer_reset(vty->obuf); |
2311 | vty_out(vty, "\nVty connection is timed out.\n"); | |
718e3744 | 2312 | |
d62a17ae | 2313 | /* Close connection. */ |
2314 | vty->status = VTY_CLOSE; | |
2315 | vty_close(vty); | |
718e3744 | 2316 | } |
2317 | ||
2318 | /* Read up configuration file from file_name. */ | |
1c2facd1 | 2319 | static void vty_read_file(struct nb_config *config, FILE *confp) |
d62a17ae | 2320 | { |
2321 | int ret; | |
2322 | struct vty *vty; | |
7ab57d19 DS |
2323 | struct vty_error *ve; |
2324 | struct listnode *node; | |
d62a17ae | 2325 | unsigned int line_num = 0; |
2326 | ||
2327 | vty = vty_new(); | |
10b8a9c0 | 2328 | /* vty_close won't close stderr; if some config command prints |
03bad95a | 2329 | * something it'll end up there. (not ideal; it'd be better if output |
10b8a9c0 DL |
2330 | * from a file-load went to logging instead. Also note that if this |
2331 | * function is called after daemonizing, stderr will be /dev/null.) | |
2332 | * | |
2333 | * vty->fd will be -1 from vty_new() | |
2334 | */ | |
2335 | vty->wfd = STDERR_FILENO; | |
d62a17ae | 2336 | vty->type = VTY_FILE; |
2337 | vty->node = CONFIG_NODE; | |
eaf6705d | 2338 | vty->config = true; |
1c2facd1 RW |
2339 | if (config) |
2340 | vty->candidate_config = config; | |
2341 | else { | |
2342 | vty->private_config = true; | |
2343 | vty->candidate_config = nb_config_new(NULL); | |
2344 | } | |
d62a17ae | 2345 | |
2346 | /* Execute configuration file */ | |
2347 | ret = config_from_file(vty, confp, &line_num); | |
2348 | ||
2349 | /* Flush any previous errors before printing messages below */ | |
10b8a9c0 | 2350 | buffer_flush_all(vty->obuf, vty->wfd); |
d62a17ae | 2351 | |
2352 | if (!((ret == CMD_SUCCESS) || (ret == CMD_ERR_NOTHING_TODO))) { | |
2353 | const char *message = NULL; | |
b4fa7c95 DL |
2354 | char *nl; |
2355 | ||
d62a17ae | 2356 | switch (ret) { |
2357 | case CMD_ERR_AMBIGUOUS: | |
b4fa7c95 | 2358 | message = "Ambiguous command"; |
d62a17ae | 2359 | break; |
2360 | case CMD_ERR_NO_MATCH: | |
b4fa7c95 | 2361 | message = "No such command"; |
d62a17ae | 2362 | break; |
c539c389 DS |
2363 | case CMD_WARNING: |
2364 | message = "Command returned Warning"; | |
2365 | break; | |
2366 | case CMD_WARNING_CONFIG_FAILED: | |
2367 | message = "Command returned Warning Config Failed"; | |
2368 | break; | |
2369 | case CMD_ERR_INCOMPLETE: | |
2370 | message = "Command returned Incomplete"; | |
2371 | break; | |
2372 | case CMD_ERR_EXEED_ARGC_MAX: | |
996c9314 LB |
2373 | message = |
2374 | "Command exceeded maximum number of Arguments"; | |
c539c389 DS |
2375 | break; |
2376 | default: | |
2377 | message = "Command returned unhandled error message"; | |
2378 | break; | |
d62a17ae | 2379 | } |
b4fa7c95 | 2380 | |
7ab57d19 DS |
2381 | for (ALL_LIST_ELEMENTS_RO(vty->error, node, ve)) { |
2382 | nl = strchr(ve->error_buf, '\n'); | |
2383 | if (nl) | |
2384 | *nl = '\0'; | |
ad6f7449 | 2385 | flog_err(EC_LIB_VTY, "%s on config line %u: %s", |
7ab57d19 DS |
2386 | message, ve->line_num, ve->error_buf); |
2387 | } | |
d62a17ae | 2388 | } |
2389 | ||
1c2facd1 RW |
2390 | /* |
2391 | * Automatically commit the candidate configuration after | |
2392 | * reading the configuration file. | |
2393 | */ | |
91f9fd78 | 2394 | if (config == NULL) { |
13d6b9c1 | 2395 | struct nb_context context = {}; |
df5eda3d | 2396 | char errmsg[BUFSIZ] = {0}; |
13d6b9c1 RW |
2397 | |
2398 | context.client = NB_CLIENT_CLI; | |
2399 | context.user = vty; | |
2400 | ret = nb_candidate_commit(&context, vty->candidate_config, true, | |
df5eda3d RW |
2401 | "Read configuration file", NULL, |
2402 | errmsg, sizeof(errmsg)); | |
1c2facd1 | 2403 | if (ret != NB_OK && ret != NB_ERR_NO_CHANGES) |
df5eda3d RW |
2404 | zlog_err( |
2405 | "%s: failed to read configuration file: %s (%s)", | |
2406 | __func__, nb_err_name(ret), errmsg); | |
1c2facd1 RW |
2407 | } |
2408 | ||
d62a17ae | 2409 | vty_close(vty); |
2410 | } | |
2411 | ||
2412 | static FILE *vty_use_backup_config(const char *fullpath) | |
2413 | { | |
2414 | char *fullpath_sav, *fullpath_tmp; | |
2415 | FILE *ret = NULL; | |
2416 | int tmp, sav; | |
2417 | int c; | |
2418 | char buffer[512]; | |
2419 | ||
9f73d2c9 QY |
2420 | size_t fullpath_sav_sz = strlen(fullpath) + strlen(CONF_BACKUP_EXT) + 1; |
2421 | fullpath_sav = malloc(fullpath_sav_sz); | |
2422 | strlcpy(fullpath_sav, fullpath, fullpath_sav_sz); | |
2423 | strlcat(fullpath_sav, CONF_BACKUP_EXT, fullpath_sav_sz); | |
d62a17ae | 2424 | |
2425 | sav = open(fullpath_sav, O_RDONLY); | |
2426 | if (sav < 0) { | |
2427 | free(fullpath_sav); | |
2428 | return NULL; | |
2429 | } | |
2430 | ||
2431 | fullpath_tmp = malloc(strlen(fullpath) + 8); | |
fc746f1c | 2432 | snprintf(fullpath_tmp, strlen(fullpath) + 8, "%s.XXXXXX", fullpath); |
d62a17ae | 2433 | |
2434 | /* Open file to configuration write. */ | |
2435 | tmp = mkstemp(fullpath_tmp); | |
2436 | if (tmp < 0) | |
2437 | goto out_close_sav; | |
2438 | ||
2439 | if (fchmod(tmp, CONFIGFILE_MASK) != 0) | |
2440 | goto out_close; | |
2441 | ||
2442 | while ((c = read(sav, buffer, 512)) > 0) { | |
2443 | if (write(tmp, buffer, c) <= 0) | |
2444 | goto out_close; | |
2445 | } | |
2446 | close(sav); | |
2447 | close(tmp); | |
2448 | ||
2449 | if (rename(fullpath_tmp, fullpath) == 0) | |
2450 | ret = fopen(fullpath, "r"); | |
2451 | else | |
2452 | unlink(fullpath_tmp); | |
2453 | ||
2454 | if (0) { | |
2455 | out_close: | |
2456 | close(tmp); | |
2457 | unlink(fullpath_tmp); | |
2458 | out_close_sav: | |
2459 | close(sav); | |
2460 | } | |
2461 | ||
2462 | free(fullpath_sav); | |
2463 | free(fullpath_tmp); | |
2464 | return ret; | |
718e3744 | 2465 | } |
2466 | ||
2467 | /* Read up configuration file from file_name. */ | |
1c2facd1 RW |
2468 | bool vty_read_config(struct nb_config *config, const char *config_file, |
2469 | char *config_default_dir) | |
d62a17ae | 2470 | { |
2471 | char cwd[MAXPATHLEN]; | |
2472 | FILE *confp = NULL; | |
2473 | const char *fullpath; | |
2474 | char *tmp = NULL; | |
5ede5e4e | 2475 | bool read_success = false; |
d62a17ae | 2476 | |
2477 | /* If -f flag specified. */ | |
2478 | if (config_file != NULL) { | |
2479 | if (!IS_DIRECTORY_SEP(config_file[0])) { | |
2480 | if (getcwd(cwd, MAXPATHLEN) == NULL) { | |
09c866e3 | 2481 | flog_err_sys( |
450971aa | 2482 | EC_LIB_SYSTEM_CALL, |
1c2facd1 RW |
2483 | "%s: failure to determine Current Working Directory %d!", |
2484 | __func__, errno); | |
2485 | goto tmp_free_and_out; | |
d62a17ae | 2486 | } |
7533cad7 QY |
2487 | size_t tmp_len = strlen(cwd) + strlen(config_file) + 2; |
2488 | tmp = XMALLOC(MTYPE_TMP, tmp_len); | |
2489 | snprintf(tmp, tmp_len, "%s/%s", cwd, config_file); | |
d62a17ae | 2490 | fullpath = tmp; |
2491 | } else | |
2492 | fullpath = config_file; | |
2493 | ||
2494 | confp = fopen(fullpath, "r"); | |
2495 | ||
2496 | if (confp == NULL) { | |
34699016 | 2497 | flog_warn( |
450971aa | 2498 | EC_LIB_BACKUP_CONFIG, |
34699016 DS |
2499 | "%s: failed to open configuration file %s: %s, checking backup", |
2500 | __func__, fullpath, safe_strerror(errno)); | |
d62a17ae | 2501 | |
2502 | confp = vty_use_backup_config(fullpath); | |
2503 | if (confp) | |
a0ee6f32 DS |
2504 | flog_warn(EC_LIB_BACKUP_CONFIG, |
2505 | "using backup configuration file!"); | |
d62a17ae | 2506 | else { |
1c2facd1 RW |
2507 | flog_err( |
2508 | EC_LIB_VTY, | |
2509 | "%s: can't open configuration file [%s]", | |
2510 | __func__, config_file); | |
2511 | goto tmp_free_and_out; | |
d62a17ae | 2512 | } |
2513 | } | |
2514 | } else { | |
2515 | ||
2516 | host_config_set(config_default_dir); | |
a7222276 | 2517 | |
718e3744 | 2518 | #ifdef VTYSH |
d62a17ae | 2519 | int ret; |
2520 | struct stat conf_stat; | |
2521 | ||
2522 | /* !!!!PLEASE LEAVE!!!! | |
2523 | * This is NEEDED for use with vtysh -b, or else you can get | |
2524 | * a real configuration food fight with a lot garbage in the | |
2525 | * merged configuration file it creates coming from the per | |
2526 | * daemon configuration files. This also allows the daemons | |
2527 | * to start if there default configuration file is not | |
2528 | * present or ignore them, as needed when using vtysh -b to | |
2529 | * configure the daemons at boot - MAG | |
2530 | */ | |
2531 | ||
2532 | /* Stat for vtysh Zebra.conf, if found startup and wait for | |
2533 | * boot configuration | |
2534 | */ | |
2535 | ||
2536 | if (strstr(config_default_dir, "vtysh") == NULL) { | |
2537 | ret = stat(integrate_default, &conf_stat); | |
5ede5e4e DS |
2538 | if (ret >= 0) { |
2539 | read_success = true; | |
d62a17ae | 2540 | goto tmp_free_and_out; |
5ede5e4e | 2541 | } |
d62a17ae | 2542 | } |
a7222276 | 2543 | #endif /* VTYSH */ |
d62a17ae | 2544 | confp = fopen(config_default_dir, "r"); |
2545 | if (confp == NULL) { | |
34699016 | 2546 | flog_err( |
450971aa | 2547 | EC_LIB_SYSTEM_CALL, |
34699016 DS |
2548 | "%s: failed to open configuration file %s: %s, checking backup", |
2549 | __func__, config_default_dir, | |
2550 | safe_strerror(errno)); | |
d62a17ae | 2551 | |
2552 | confp = vty_use_backup_config(config_default_dir); | |
2553 | if (confp) { | |
a0ee6f32 DS |
2554 | flog_warn(EC_LIB_BACKUP_CONFIG, |
2555 | "using backup configuration file!"); | |
d62a17ae | 2556 | fullpath = config_default_dir; |
2557 | } else { | |
450971aa | 2558 | flog_err(EC_LIB_VTY, |
1c50c1c0 QY |
2559 | "can't open configuration file [%s]", |
2560 | config_default_dir); | |
d62a17ae | 2561 | goto tmp_free_and_out; |
2562 | } | |
2563 | } else | |
2564 | fullpath = config_default_dir; | |
2565 | } | |
2566 | ||
1c2facd1 | 2567 | vty_read_file(config, confp); |
5ede5e4e | 2568 | read_success = true; |
d62a17ae | 2569 | |
2570 | fclose(confp); | |
2571 | ||
2572 | host_config_set(fullpath); | |
6eda6425 DS |
2573 | |
2574 | tmp_free_and_out: | |
0a22ddfb | 2575 | XFREE(MTYPE_TMP, tmp); |
5ede5e4e DS |
2576 | |
2577 | return read_success; | |
718e3744 | 2578 | } |
2579 | ||
763725cd IR |
2580 | static void update_xpath(struct vty *vty, const char *oldpath, |
2581 | const char *newpath) | |
2582 | { | |
2583 | int i; | |
2584 | ||
2585 | for (i = 0; i < vty->xpath_index; i++) { | |
2586 | if (!frrstr_startswith(vty->xpath[i], oldpath)) | |
2587 | break; | |
2588 | ||
2589 | char *tmp = frrstr_replace(vty->xpath[i], oldpath, newpath); | |
2590 | strlcpy(vty->xpath[i], tmp, sizeof(vty->xpath[0])); | |
2591 | XFREE(MTYPE_TMP, tmp); | |
2592 | } | |
2593 | } | |
2594 | ||
2595 | void vty_update_xpath(const char *oldpath, const char *newpath) | |
2596 | { | |
2597 | struct vty *vty; | |
763725cd | 2598 | |
43dd8caf | 2599 | frr_each (vtys, vtysh_sessions, vty) |
763725cd | 2600 | update_xpath(vty, oldpath, newpath); |
43dd8caf | 2601 | frr_each (vtys, vty_sessions, vty) |
763725cd | 2602 | update_xpath(vty, oldpath, newpath); |
763725cd IR |
2603 | } |
2604 | ||
f344c66e | 2605 | int vty_config_enter(struct vty *vty, bool private_config, bool exclusive) |
718e3744 | 2606 | { |
364ad673 RW |
2607 | if (exclusive && nb_running_lock(NB_CLIENT_CLI, vty)) { |
2608 | vty_out(vty, "%% Configuration is locked by other client\n"); | |
f344c66e | 2609 | return CMD_WARNING; |
d62a17ae | 2610 | } |
f344c66e RW |
2611 | |
2612 | vty->node = CONFIG_NODE; | |
2613 | vty->config = true; | |
2614 | vty->private_config = private_config; | |
41e195d4 | 2615 | vty->xpath_index = 0; |
f344c66e | 2616 | |
8685be73 RW |
2617 | if (private_config) { |
2618 | vty->candidate_config = nb_config_dup(running_config); | |
2619 | vty->candidate_config_base = nb_config_dup(running_config); | |
2620 | vty_out(vty, | |
2621 | "Warning: uncommitted changes will be discarded on exit.\n\n"); | |
2622 | } else { | |
2623 | vty->candidate_config = vty_shared_candidate_config; | |
2624 | if (frr_get_cli_mode() == FRR_CLI_TRANSACTIONAL) | |
f344c66e RW |
2625 | vty->candidate_config_base = |
2626 | nb_config_dup(running_config); | |
2627 | } | |
2628 | ||
2629 | return CMD_SUCCESS; | |
718e3744 | 2630 | } |
2631 | ||
f344c66e | 2632 | void vty_config_exit(struct vty *vty) |
718e3744 | 2633 | { |
24389580 DL |
2634 | enum node_type node = vty->node; |
2635 | struct cmd_node *cnode; | |
2636 | ||
2637 | /* unlock and jump up to ENABLE_NODE if -and only if- we're | |
2638 | * somewhere below CONFIG_NODE */ | |
2639 | while (node && node != CONFIG_NODE) { | |
2640 | cnode = vector_lookup(cmdvec, node); | |
2641 | node = cnode->parent_node; | |
2642 | } | |
791ded4a DL |
2643 | if (node != CONFIG_NODE) |
2644 | /* called outside config, e.g. vty_close() in ENABLE_NODE */ | |
24389580 | 2645 | return; |
24389580 DL |
2646 | |
2647 | while (vty->node != ENABLE_NODE) | |
791ded4a | 2648 | /* will call vty_config_node_exit() below */ |
24389580 | 2649 | cmd_exit(vty); |
791ded4a DL |
2650 | } |
2651 | ||
2652 | int vty_config_node_exit(struct vty *vty) | |
2653 | { | |
2654 | vty->xpath_index = 0; | |
24389580 | 2655 | |
fd396924 CH |
2656 | /* Perform any pending commits. */ |
2657 | (void)nb_cli_pending_commit_check(vty); | |
b855e95f | 2658 | |
fbdc1c0a RW |
2659 | /* Check if there's a pending confirmed commit. */ |
2660 | if (vty->t_confirmed_commit_timeout) { | |
2661 | vty_out(vty, | |
a0ee6f32 | 2662 | "exiting with a pending confirmed commit. Rolling back to previous configuration.\n\n"); |
fbdc1c0a RW |
2663 | nb_cli_confirmed_commit_rollback(vty); |
2664 | nb_cli_confirmed_commit_clean(vty); | |
2665 | } | |
2666 | ||
364ad673 | 2667 | (void)nb_running_unlock(NB_CLIENT_CLI, vty); |
1c2facd1 RW |
2668 | |
2669 | if (vty->candidate_config) { | |
2670 | if (vty->private_config) | |
2671 | nb_config_free(vty->candidate_config); | |
2672 | vty->candidate_config = NULL; | |
2673 | } | |
2674 | if (vty->candidate_config_base) { | |
2675 | nb_config_free(vty->candidate_config_base); | |
2676 | vty->candidate_config_base = NULL; | |
2677 | } | |
cf09d3ca RW |
2678 | |
2679 | vty->config = false; | |
791ded4a | 2680 | return 1; |
cc933ef9 DL |
2681 | } |
2682 | ||
718e3744 | 2683 | /* Master of the threads. */ |
79159516 | 2684 | static struct thread_master *vty_master; |
718e3744 | 2685 | |
55a70ffb | 2686 | static void vty_event_serv(enum vty_event event, struct vty_serv *vty_serv) |
718e3744 | 2687 | { |
d62a17ae | 2688 | switch (event) { |
2689 | case VTY_SERV: | |
26ae7cc2 DL |
2690 | thread_add_read(vty_master, vty_accept, vty_serv, |
2691 | vty_serv->sock, &vty_serv->t_accept); | |
d62a17ae | 2692 | break; |
718e3744 | 2693 | #ifdef VTYSH |
d62a17ae | 2694 | case VTYSH_SERV: |
26ae7cc2 DL |
2695 | thread_add_read(vty_master, vtysh_accept, vty_serv, |
2696 | vty_serv->sock, &vty_serv->t_accept); | |
d62a17ae | 2697 | break; |
ab699721 DL |
2698 | #endif /* VTYSH */ |
2699 | default: | |
2700 | assert(!"vty_event_serv() called incorrectly"); | |
2701 | } | |
2702 | } | |
2703 | ||
55a70ffb | 2704 | static void vty_event(enum vty_event event, struct vty *vty) |
ab699721 DL |
2705 | { |
2706 | switch (event) { | |
2707 | #ifdef VTYSH | |
d62a17ae | 2708 | case VTYSH_READ: |
ab699721 | 2709 | thread_add_read(vty_master, vtysh_read, vty, vty->fd, |
d62a17ae | 2710 | &vty->t_read); |
2711 | break; | |
2712 | case VTYSH_WRITE: | |
ab699721 | 2713 | thread_add_write(vty_master, vtysh_write, vty, vty->wfd, |
d62a17ae | 2714 | &vty->t_write); |
2715 | break; | |
718e3744 | 2716 | #endif /* VTYSH */ |
d62a17ae | 2717 | case VTY_READ: |
ab699721 DL |
2718 | thread_add_read(vty_master, vty_read, vty, vty->fd, |
2719 | &vty->t_read); | |
d62a17ae | 2720 | |
2721 | /* Time out treatment. */ | |
2722 | if (vty->v_timeout) { | |
43b8ca99 | 2723 | THREAD_OFF(vty->t_timeout); |
d62a17ae | 2724 | thread_add_timer(vty_master, vty_timeout, vty, |
2725 | vty->v_timeout, &vty->t_timeout); | |
2726 | } | |
2727 | break; | |
2728 | case VTY_WRITE: | |
ab699721 | 2729 | thread_add_write(vty_master, vty_flush, vty, vty->wfd, |
d62a17ae | 2730 | &vty->t_write); |
2731 | break; | |
2732 | case VTY_TIMEOUT_RESET: | |
43b8ca99 DS |
2733 | THREAD_OFF(vty->t_timeout); |
2734 | if (vty->v_timeout) | |
d62a17ae | 2735 | thread_add_timer(vty_master, vty_timeout, vty, |
2736 | vty->v_timeout, &vty->t_timeout); | |
d62a17ae | 2737 | break; |
ab699721 DL |
2738 | default: |
2739 | assert(!"vty_event() called incorrectly"); | |
d62a17ae | 2740 | } |
718e3744 | 2741 | } |
6b0655a2 | 2742 | |
505e5056 | 2743 | DEFUN_NOSH (config_who, |
718e3744 | 2744 | config_who_cmd, |
2745 | "who", | |
2746 | "Display who is on vty\n") | |
2747 | { | |
d62a17ae | 2748 | struct vty *v; |
718e3744 | 2749 | |
43dd8caf | 2750 | frr_each (vtys, vty_sessions, v) |
0798d276 DL |
2751 | vty_out(vty, "%svty[%d] connected from %s%s.\n", |
2752 | v->config ? "*" : " ", v->fd, v->address, | |
2753 | zlog_live_is_null(&v->live_log) ? "" : ", live log"); | |
d62a17ae | 2754 | return CMD_SUCCESS; |
718e3744 | 2755 | } |
2756 | ||
2757 | /* Move to vty configuration mode. */ | |
505e5056 | 2758 | DEFUN_NOSH (line_vty, |
718e3744 | 2759 | line_vty_cmd, |
2760 | "line vty", | |
2761 | "Configure a terminal line\n" | |
2762 | "Virtual terminal\n") | |
2763 | { | |
d62a17ae | 2764 | vty->node = VTY_NODE; |
2765 | return CMD_SUCCESS; | |
718e3744 | 2766 | } |
2767 | ||
2768 | /* Set time out value. */ | |
d62a17ae | 2769 | static int exec_timeout(struct vty *vty, const char *min_str, |
2770 | const char *sec_str) | |
718e3744 | 2771 | { |
d62a17ae | 2772 | unsigned long timeout = 0; |
718e3744 | 2773 | |
d62a17ae | 2774 | /* min_str and sec_str are already checked by parser. So it must be |
2775 | all digit string. */ | |
2776 | if (min_str) { | |
2777 | timeout = strtol(min_str, NULL, 10); | |
2778 | timeout *= 60; | |
2779 | } | |
2780 | if (sec_str) | |
2781 | timeout += strtol(sec_str, NULL, 10); | |
718e3744 | 2782 | |
d62a17ae | 2783 | vty_timeout_val = timeout; |
2784 | vty->v_timeout = timeout; | |
ab699721 | 2785 | vty_event(VTY_TIMEOUT_RESET, vty); |
718e3744 | 2786 | |
2787 | ||
d62a17ae | 2788 | return CMD_SUCCESS; |
718e3744 | 2789 | } |
2790 | ||
2791 | DEFUN (exec_timeout_min, | |
2792 | exec_timeout_min_cmd, | |
aa1c90a4 | 2793 | "exec-timeout (0-35791)", |
718e3744 | 2794 | "Set timeout value\n" |
2795 | "Timeout value in minutes\n") | |
2796 | { | |
d62a17ae | 2797 | int idx_number = 1; |
2798 | return exec_timeout(vty, argv[idx_number]->arg, NULL); | |
718e3744 | 2799 | } |
2800 | ||
2801 | DEFUN (exec_timeout_sec, | |
2802 | exec_timeout_sec_cmd, | |
aa1c90a4 | 2803 | "exec-timeout (0-35791) (0-2147483)", |
718e3744 | 2804 | "Set the EXEC timeout\n" |
2805 | "Timeout in minutes\n" | |
2806 | "Timeout in seconds\n") | |
2807 | { | |
d62a17ae | 2808 | int idx_number = 1; |
2809 | int idx_number_2 = 2; | |
2810 | return exec_timeout(vty, argv[idx_number]->arg, | |
2811 | argv[idx_number_2]->arg); | |
718e3744 | 2812 | } |
2813 | ||
2814 | DEFUN (no_exec_timeout, | |
2815 | no_exec_timeout_cmd, | |
2816 | "no exec-timeout", | |
2817 | NO_STR | |
2818 | "Set the EXEC timeout\n") | |
2819 | { | |
d62a17ae | 2820 | return exec_timeout(vty, NULL, NULL); |
718e3744 | 2821 | } |
2822 | ||
2823 | /* Set vty access class. */ | |
2824 | DEFUN (vty_access_class, | |
2825 | vty_access_class_cmd, | |
2826 | "access-class WORD", | |
2827 | "Filter connections based on an IP access list\n" | |
2828 | "IP access list\n") | |
2829 | { | |
d62a17ae | 2830 | int idx_word = 1; |
2831 | if (vty_accesslist_name) | |
2832 | XFREE(MTYPE_VTY, vty_accesslist_name); | |
718e3744 | 2833 | |
d62a17ae | 2834 | vty_accesslist_name = XSTRDUP(MTYPE_VTY, argv[idx_word]->arg); |
718e3744 | 2835 | |
d62a17ae | 2836 | return CMD_SUCCESS; |
718e3744 | 2837 | } |
2838 | ||
2839 | /* Clear vty access class. */ | |
2840 | DEFUN (no_vty_access_class, | |
2841 | no_vty_access_class_cmd, | |
2842 | "no access-class [WORD]", | |
2843 | NO_STR | |
2844 | "Filter connections based on an IP access list\n" | |
2845 | "IP access list\n") | |
2846 | { | |
d62a17ae | 2847 | int idx_word = 2; |
2848 | const char *accesslist = (argc == 3) ? argv[idx_word]->arg : NULL; | |
2849 | if (!vty_accesslist_name | |
2850 | || (argc == 3 && strcmp(vty_accesslist_name, accesslist))) { | |
2851 | vty_out(vty, "Access-class is not currently applied to vty\n"); | |
2852 | return CMD_WARNING_CONFIG_FAILED; | |
2853 | } | |
718e3744 | 2854 | |
d62a17ae | 2855 | XFREE(MTYPE_VTY, vty_accesslist_name); |
718e3744 | 2856 | |
d62a17ae | 2857 | vty_accesslist_name = NULL; |
718e3744 | 2858 | |
d62a17ae | 2859 | return CMD_SUCCESS; |
718e3744 | 2860 | } |
2861 | ||
718e3744 | 2862 | /* Set vty access class. */ |
2863 | DEFUN (vty_ipv6_access_class, | |
2864 | vty_ipv6_access_class_cmd, | |
2865 | "ipv6 access-class WORD", | |
2866 | IPV6_STR | |
2867 | "Filter connections based on an IP access list\n" | |
2868 | "IPv6 access list\n") | |
2869 | { | |
d62a17ae | 2870 | int idx_word = 2; |
2871 | if (vty_ipv6_accesslist_name) | |
2872 | XFREE(MTYPE_VTY, vty_ipv6_accesslist_name); | |
718e3744 | 2873 | |
d62a17ae | 2874 | vty_ipv6_accesslist_name = XSTRDUP(MTYPE_VTY, argv[idx_word]->arg); |
718e3744 | 2875 | |
d62a17ae | 2876 | return CMD_SUCCESS; |
718e3744 | 2877 | } |
2878 | ||
2879 | /* Clear vty access class. */ | |
2880 | DEFUN (no_vty_ipv6_access_class, | |
2881 | no_vty_ipv6_access_class_cmd, | |
2882 | "no ipv6 access-class [WORD]", | |
2883 | NO_STR | |
2884 | IPV6_STR | |
2885 | "Filter connections based on an IP access list\n" | |
2886 | "IPv6 access list\n") | |
2887 | { | |
d62a17ae | 2888 | int idx_word = 3; |
2889 | const char *accesslist = (argc == 4) ? argv[idx_word]->arg : NULL; | |
aa1c90a4 | 2890 | |
d62a17ae | 2891 | if (!vty_ipv6_accesslist_name |
2892 | || (argc == 4 && strcmp(vty_ipv6_accesslist_name, accesslist))) { | |
2893 | vty_out(vty, | |
2894 | "IPv6 access-class is not currently applied to vty\n"); | |
2895 | return CMD_WARNING_CONFIG_FAILED; | |
2896 | } | |
718e3744 | 2897 | |
d62a17ae | 2898 | XFREE(MTYPE_VTY, vty_ipv6_accesslist_name); |
718e3744 | 2899 | |
d62a17ae | 2900 | vty_ipv6_accesslist_name = NULL; |
718e3744 | 2901 | |
d62a17ae | 2902 | return CMD_SUCCESS; |
718e3744 | 2903 | } |
718e3744 | 2904 | |
2905 | /* vty login. */ | |
2906 | DEFUN (vty_login, | |
2907 | vty_login_cmd, | |
2908 | "login", | |
2909 | "Enable password checking\n") | |
2910 | { | |
d62a17ae | 2911 | no_password_check = 0; |
2912 | return CMD_SUCCESS; | |
718e3744 | 2913 | } |
2914 | ||
2915 | DEFUN (no_vty_login, | |
2916 | no_vty_login_cmd, | |
2917 | "no login", | |
2918 | NO_STR | |
2919 | "Enable password checking\n") | |
2920 | { | |
d62a17ae | 2921 | no_password_check = 1; |
2922 | return CMD_SUCCESS; | |
718e3744 | 2923 | } |
2924 | ||
2925 | DEFUN (service_advanced_vty, | |
2926 | service_advanced_vty_cmd, | |
2927 | "service advanced-vty", | |
2928 | "Set up miscellaneous service\n" | |
2929 | "Enable advanced mode vty interface\n") | |
2930 | { | |
d62a17ae | 2931 | host.advanced = 1; |
2932 | return CMD_SUCCESS; | |
718e3744 | 2933 | } |
2934 | ||
2935 | DEFUN (no_service_advanced_vty, | |
2936 | no_service_advanced_vty_cmd, | |
2937 | "no service advanced-vty", | |
2938 | NO_STR | |
2939 | "Set up miscellaneous service\n" | |
2940 | "Enable advanced mode vty interface\n") | |
2941 | { | |
d62a17ae | 2942 | host.advanced = 0; |
2943 | return CMD_SUCCESS; | |
718e3744 | 2944 | } |
2945 | ||
0798d276 DL |
2946 | DEFUN_NOSH(terminal_monitor, |
2947 | terminal_monitor_cmd, | |
2948 | "terminal monitor [detach]", | |
2949 | "Set terminal line parameters\n" | |
2950 | "Copy debug output to the current terminal line\n" | |
2951 | "Keep logging feed open independent of VTY session\n") | |
718e3744 | 2952 | { |
0798d276 DL |
2953 | int fd_ret = -1; |
2954 | ||
2955 | if (vty->type != VTY_SHELL_SERV) { | |
2956 | vty_out(vty, "%% not supported\n"); | |
2957 | return CMD_WARNING; | |
2958 | } | |
2959 | ||
2960 | if (argc == 3) { | |
2961 | struct zlog_live_cfg detach_log = {}; | |
2962 | ||
2963 | zlog_live_open(&detach_log, LOG_DEBUG, &fd_ret); | |
2964 | zlog_live_disown(&detach_log); | |
2965 | } else | |
2966 | zlog_live_open(&vty->live_log, LOG_DEBUG, &fd_ret); | |
2967 | ||
2968 | if (fd_ret == -1) { | |
2969 | vty_out(vty, "%% error opening live log: %m\n"); | |
2970 | return CMD_WARNING; | |
2971 | } | |
2972 | ||
2973 | vty_pass_fd(vty, fd_ret); | |
d62a17ae | 2974 | return CMD_SUCCESS; |
718e3744 | 2975 | } |
2976 | ||
0798d276 DL |
2977 | DEFUN_NOSH(no_terminal_monitor, |
2978 | no_terminal_monitor_cmd, | |
2979 | "no terminal monitor", | |
2980 | NO_STR | |
2981 | "Set terminal line parameters\n" | |
2982 | "Copy debug output to the current terminal line\n") | |
718e3744 | 2983 | { |
0798d276 | 2984 | zlog_live_close(&vty->live_log); |
d62a17ae | 2985 | return CMD_SUCCESS; |
718e3744 | 2986 | } |
2987 | ||
0798d276 DL |
2988 | DEFUN_NOSH(terminal_no_monitor, |
2989 | terminal_no_monitor_cmd, | |
2990 | "terminal no monitor", | |
2991 | "Set terminal line parameters\n" | |
2992 | NO_STR | |
2993 | "Copy debug output to the current terminal line\n") | |
f667a580 | 2994 | { |
0798d276 | 2995 | return no_terminal_monitor(self, vty, argc, argv); |
f667a580 QY |
2996 | } |
2997 | ||
789f78ac | 2998 | |
505e5056 | 2999 | DEFUN_NOSH (show_history, |
718e3744 | 3000 | show_history_cmd, |
3001 | "show history", | |
3002 | SHOW_STR | |
3003 | "Display the session command history\n") | |
3004 | { | |
d62a17ae | 3005 | int index; |
718e3744 | 3006 | |
d62a17ae | 3007 | for (index = vty->hindex + 1; index != vty->hindex;) { |
3008 | if (index == VTY_MAXHIST) { | |
3009 | index = 0; | |
3010 | continue; | |
3011 | } | |
718e3744 | 3012 | |
d62a17ae | 3013 | if (vty->hist[index] != NULL) |
3014 | vty_out(vty, " %s\n", vty->hist[index]); | |
718e3744 | 3015 | |
d62a17ae | 3016 | index++; |
3017 | } | |
718e3744 | 3018 | |
d62a17ae | 3019 | return CMD_SUCCESS; |
718e3744 | 3020 | } |
3021 | ||
da688ecd | 3022 | /* vty login. */ |
2950f5da | 3023 | DEFPY (log_commands, |
da688ecd | 3024 | log_commands_cmd, |
2950f5da DS |
3025 | "[no] log commands", |
3026 | NO_STR | |
da688ecd | 3027 | "Logging control\n" |
2950f5da | 3028 | "Log all commands\n") |
da688ecd | 3029 | { |
2950f5da DS |
3030 | if (no) { |
3031 | if (do_log_commands_perm) { | |
3032 | vty_out(vty, | |
3033 | "Daemon started with permanent logging turned on for commands, ignoring\n"); | |
3034 | return CMD_WARNING; | |
3035 | } | |
3036 | ||
3037 | do_log_commands = false; | |
3038 | } else | |
3039 | do_log_commands = true; | |
3040 | ||
d62a17ae | 3041 | return CMD_SUCCESS; |
da688ecd LB |
3042 | } |
3043 | ||
718e3744 | 3044 | /* Display current configuration. */ |
d62a17ae | 3045 | static int vty_config_write(struct vty *vty) |
718e3744 | 3046 | { |
07679ad9 | 3047 | vty_frame(vty, "line vty\n"); |
718e3744 | 3048 | |
d62a17ae | 3049 | if (vty_accesslist_name) |
3050 | vty_out(vty, " access-class %s\n", vty_accesslist_name); | |
718e3744 | 3051 | |
d62a17ae | 3052 | if (vty_ipv6_accesslist_name) |
3053 | vty_out(vty, " ipv6 access-class %s\n", | |
3054 | vty_ipv6_accesslist_name); | |
718e3744 | 3055 | |
d62a17ae | 3056 | /* exec-timeout */ |
3057 | if (vty_timeout_val != VTY_TIMEOUT_DEFAULT) | |
3058 | vty_out(vty, " exec-timeout %ld %ld\n", vty_timeout_val / 60, | |
3059 | vty_timeout_val % 60); | |
718e3744 | 3060 | |
d62a17ae | 3061 | /* login */ |
3062 | if (no_password_check) | |
3063 | vty_out(vty, " no login\n"); | |
da688ecd | 3064 | |
07679ad9 IR |
3065 | vty_endframe(vty, "exit\n"); |
3066 | ||
d62a17ae | 3067 | if (do_log_commands) |
3068 | vty_out(vty, "log commands\n"); | |
d0bfb22c | 3069 | |
d62a17ae | 3070 | vty_out(vty, "!\n"); |
718e3744 | 3071 | |
d62a17ae | 3072 | return CMD_SUCCESS; |
718e3744 | 3073 | } |
3074 | ||
612c2c15 | 3075 | static int vty_config_write(struct vty *vty); |
d62a17ae | 3076 | struct cmd_node vty_node = { |
f4b8291f | 3077 | .name = "vty", |
62b346ee | 3078 | .node = VTY_NODE, |
24389580 | 3079 | .parent_node = CONFIG_NODE, |
62b346ee | 3080 | .prompt = "%s(config-line)# ", |
612c2c15 | 3081 | .config_write = vty_config_write, |
718e3744 | 3082 | }; |
3083 | ||
3084 | /* Reset all VTY status. */ | |
4d762f26 | 3085 | void vty_reset(void) |
d62a17ae | 3086 | { |
d62a17ae | 3087 | struct vty *vty; |
d62a17ae | 3088 | |
43dd8caf DL |
3089 | frr_each_safe (vtys, vty_sessions, vty) { |
3090 | buffer_reset(vty->lbuf); | |
3091 | buffer_reset(vty->obuf); | |
3092 | vty->status = VTY_CLOSE; | |
3093 | vty_close(vty); | |
3094 | } | |
d62a17ae | 3095 | |
d62a17ae | 3096 | vty_timeout_val = VTY_TIMEOUT_DEFAULT; |
3097 | ||
e1b36e13 QY |
3098 | XFREE(MTYPE_VTY, vty_accesslist_name); |
3099 | XFREE(MTYPE_VTY, vty_ipv6_accesslist_name); | |
718e3744 | 3100 | } |
3101 | ||
d62a17ae | 3102 | static void vty_save_cwd(void) |
718e3744 | 3103 | { |
d62a17ae | 3104 | char *c; |
79ad2798 | 3105 | |
daeb97e9 | 3106 | c = getcwd(vty_cwd, sizeof(vty_cwd)); |
718e3744 | 3107 | |
d62a17ae | 3108 | if (!c) { |
3109 | /* | |
3110 | * At this point if these go wrong, more than likely | |
3111 | * the whole world is coming down around us | |
3112 | * Hence not worrying about it too much. | |
3113 | */ | |
46cba0d4 | 3114 | if (chdir(SYSCONFDIR)) { |
450971aa | 3115 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
3116 | "Failure to chdir to %s, errno: %d", |
3117 | SYSCONFDIR, errno); | |
d62a17ae | 3118 | exit(-1); |
3119 | } | |
daeb97e9 | 3120 | if (getcwd(vty_cwd, sizeof(vty_cwd)) == NULL) { |
450971aa | 3121 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 | 3122 | "Failure to getcwd, errno: %d", errno); |
d62a17ae | 3123 | exit(-1); |
3124 | } | |
3125 | } | |
718e3744 | 3126 | } |
3127 | ||
4d762f26 | 3128 | char *vty_get_cwd(void) |
718e3744 | 3129 | { |
d62a17ae | 3130 | return vty_cwd; |
718e3744 | 3131 | } |
3132 | ||
d62a17ae | 3133 | int vty_shell(struct vty *vty) |
718e3744 | 3134 | { |
d62a17ae | 3135 | return vty->type == VTY_SHELL ? 1 : 0; |
718e3744 | 3136 | } |
3137 | ||
d62a17ae | 3138 | int vty_shell_serv(struct vty *vty) |
718e3744 | 3139 | { |
d62a17ae | 3140 | return vty->type == VTY_SHELL_SERV ? 1 : 0; |
718e3744 | 3141 | } |
3142 | ||
4d762f26 | 3143 | void vty_init_vtysh(void) |
718e3744 | 3144 | { |
43dd8caf | 3145 | /* currently nothing to do, but likely to have future use */ |
718e3744 | 3146 | } |
3147 | ||
3148 | /* Install vty's own commands like `who' command. */ | |
2950f5da | 3149 | void vty_init(struct thread_master *master_thread, bool do_command_logging) |
d62a17ae | 3150 | { |
3151 | /* For further configuration read, preserve current directory. */ | |
3152 | vty_save_cwd(); | |
3153 | ||
d62a17ae | 3154 | vty_master = master_thread; |
3155 | ||
154b9e8f | 3156 | atexit(vty_stdio_atexit); |
d62a17ae | 3157 | |
d62a17ae | 3158 | /* Install bgp top node. */ |
612c2c15 | 3159 | install_node(&vty_node); |
d62a17ae | 3160 | |
3161 | install_element(VIEW_NODE, &config_who_cmd); | |
3162 | install_element(VIEW_NODE, &show_history_cmd); | |
3163 | install_element(CONFIG_NODE, &line_vty_cmd); | |
3164 | install_element(CONFIG_NODE, &service_advanced_vty_cmd); | |
3165 | install_element(CONFIG_NODE, &no_service_advanced_vty_cmd); | |
3166 | install_element(CONFIG_NODE, &show_history_cmd); | |
3167 | install_element(CONFIG_NODE, &log_commands_cmd); | |
2950f5da DS |
3168 | |
3169 | if (do_command_logging) { | |
3170 | do_log_commands = true; | |
3171 | do_log_commands_perm = true; | |
3172 | } | |
3173 | ||
d62a17ae | 3174 | install_element(ENABLE_NODE, &terminal_monitor_cmd); |
3175 | install_element(ENABLE_NODE, &terminal_no_monitor_cmd); | |
3176 | install_element(ENABLE_NODE, &no_terminal_monitor_cmd); | |
3177 | ||
3178 | install_default(VTY_NODE); | |
3179 | install_element(VTY_NODE, &exec_timeout_min_cmd); | |
3180 | install_element(VTY_NODE, &exec_timeout_sec_cmd); | |
3181 | install_element(VTY_NODE, &no_exec_timeout_cmd); | |
3182 | install_element(VTY_NODE, &vty_access_class_cmd); | |
3183 | install_element(VTY_NODE, &no_vty_access_class_cmd); | |
3184 | install_element(VTY_NODE, &vty_login_cmd); | |
3185 | install_element(VTY_NODE, &no_vty_login_cmd); | |
3186 | install_element(VTY_NODE, &vty_ipv6_access_class_cmd); | |
3187 | install_element(VTY_NODE, &no_vty_ipv6_access_class_cmd); | |
3188 | } | |
3189 | ||
3190 | void vty_terminate(void) | |
3191 | { | |
43dd8caf | 3192 | struct vty *vty; |
26ae7cc2 | 3193 | struct vty_serv *vtyserv; |
43dd8caf | 3194 | |
daeb97e9 | 3195 | memset(vty_cwd, 0x00, sizeof(vty_cwd)); |
d62a17ae | 3196 | |
43dd8caf DL |
3197 | vty_reset(); |
3198 | ||
3199 | /* default state of vty_sessions is initialized & empty. */ | |
3200 | vtys_fini(vty_sessions); | |
3201 | vtys_init(vty_sessions); | |
3202 | ||
3203 | /* vty_reset() doesn't close vtysh sessions */ | |
3204 | frr_each_safe (vtys, vtysh_sessions, vty) { | |
3205 | buffer_reset(vty->lbuf); | |
3206 | buffer_reset(vty->obuf); | |
3207 | vty->status = VTY_CLOSE; | |
3208 | vty_close(vty); | |
3209 | } | |
3210 | ||
3211 | vtys_fini(vtysh_sessions); | |
3212 | vtys_init(vtysh_sessions); | |
3213 | ||
26ae7cc2 DL |
3214 | while ((vtyserv = vtyservs_pop(vty_servs))) { |
3215 | THREAD_OFF(vtyserv->t_accept); | |
3216 | close(vtyserv->sock); | |
3217 | XFREE(MTYPE_VTY_SERV, vtyserv); | |
d62a17ae | 3218 | } |
26ae7cc2 DL |
3219 | |
3220 | vtyservs_fini(vty_servs); | |
3221 | vtyservs_init(vty_servs); | |
228da428 | 3222 | } |