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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" |
9fc7ebf1 | 51 | |
52 | #include <arpa/telnet.h> | |
b510a06e | 53 | #include <termios.h> |
718e3744 | 54 | |
2950f5da DS |
55 | #ifndef VTYSH_EXTRACT_PL |
56 | #include "lib/vty_clippy.c" | |
57 | #endif | |
58 | ||
d62a17ae | 59 | DEFINE_MTYPE_STATIC(LIB, VTY, "VTY") |
4a1ab8e4 | 60 | DEFINE_MTYPE_STATIC(LIB, VTY_OUT_BUF, "VTY output buffer") |
d62a17ae | 61 | DEFINE_MTYPE_STATIC(LIB, VTY_HIST, "VTY history") |
4a1ab8e4 | 62 | |
718e3744 | 63 | /* Vty events */ |
d62a17ae | 64 | enum event { |
65 | VTY_SERV, | |
66 | VTY_READ, | |
67 | VTY_WRITE, | |
68 | VTY_TIMEOUT_RESET, | |
718e3744 | 69 | #ifdef VTYSH |
d62a17ae | 70 | VTYSH_SERV, |
71 | VTYSH_READ, | |
72 | VTYSH_WRITE | |
718e3744 | 73 | #endif /* VTYSH */ |
74 | }; | |
75 | ||
d62a17ae | 76 | static void vty_event(enum event, int, struct vty *); |
718e3744 | 77 | |
78 | /* Extern host structure from command.c */ | |
79 | extern struct host host; | |
6b0655a2 | 80 | |
718e3744 | 81 | /* Vector which store each vty structure. */ |
82 | static vector vtyvec; | |
83 | ||
84 | /* Vty timeout value. */ | |
85 | static unsigned long vty_timeout_val = VTY_TIMEOUT_DEFAULT; | |
86 | ||
87 | /* Vty access-class command */ | |
88 | static char *vty_accesslist_name = NULL; | |
89 | ||
90 | /* Vty access-calss for IPv6. */ | |
91 | static char *vty_ipv6_accesslist_name = NULL; | |
92 | ||
93 | /* VTY server thread. */ | |
677bcbbf | 94 | static vector Vvty_serv_thread; |
718e3744 | 95 | |
96 | /* Current directory. */ | |
1b3e9a21 | 97 | static char vty_cwd[MAXPATHLEN]; |
718e3744 | 98 | |
718e3744 | 99 | /* Login password check. */ |
100 | static int no_password_check = 0; | |
101 | ||
102 | /* Integrated configuration file path */ | |
c17faa4b | 103 | static char integrate_default[] = SYSCONFDIR INTEGRATE_DEFAULT_CONFIG; |
718e3744 | 104 | |
2950f5da DS |
105 | static bool do_log_commands; |
106 | static bool do_log_commands_perm; | |
6b0655a2 | 107 | |
2071aa0e DL |
108 | void vty_frame(struct vty *vty, const char *format, ...) |
109 | { | |
110 | va_list args; | |
111 | ||
112 | va_start(args, format); | |
c7179009 DL |
113 | vsnprintfrr(vty->frame + vty->frame_pos, |
114 | sizeof(vty->frame) - vty->frame_pos, format, args); | |
2071aa0e DL |
115 | vty->frame_pos = strlen(vty->frame); |
116 | va_end(args); | |
117 | } | |
118 | ||
119 | void vty_endframe(struct vty *vty, const char *endtext) | |
120 | { | |
121 | if (vty->frame_pos == 0 && endtext) | |
122 | vty_out(vty, "%s", endtext); | |
123 | vty->frame_pos = 0; | |
124 | } | |
125 | ||
fe6b47b9 QY |
126 | bool vty_set_include(struct vty *vty, const char *regexp) |
127 | { | |
128 | int errcode; | |
129 | bool ret = true; | |
130 | char errbuf[256]; | |
131 | ||
8224c6cf | 132 | if (!regexp) { |
133 | if (vty->filter) { | |
134 | regfree(&vty->include); | |
135 | vty->filter = false; | |
136 | } | |
fe6b47b9 QY |
137 | return true; |
138 | } | |
139 | ||
140 | errcode = regcomp(&vty->include, regexp, | |
141 | REG_EXTENDED | REG_NEWLINE | REG_NOSUB); | |
142 | if (errcode) { | |
143 | ret = false; | |
511942ba IR |
144 | regerror(errcode, &vty->include, errbuf, sizeof(errbuf)); |
145 | vty_out(vty, "%% Regex compilation error: %s\n", errbuf); | |
fe6b47b9 QY |
146 | } else { |
147 | vty->filter = true; | |
148 | } | |
149 | ||
150 | return ret; | |
151 | } | |
152 | ||
83eba583 | 153 | /* VTY standard output function. */ |
d62a17ae | 154 | int vty_out(struct vty *vty, const char *format, ...) |
155 | { | |
156 | va_list args; | |
807f5b98 | 157 | ssize_t len; |
d62a17ae | 158 | char buf[1024]; |
fa3bf3a2 | 159 | char *p = NULL; |
fe6b47b9 | 160 | char *filtered; |
d62a17ae | 161 | |
2071aa0e DL |
162 | if (vty->frame_pos) { |
163 | vty->frame_pos = 0; | |
164 | vty_out(vty, "%s", vty->frame); | |
165 | } | |
166 | ||
2cddf2ff | 167 | va_start(args, format); |
807f5b98 | 168 | p = vasnprintfrr(MTYPE_VTY_OUT_BUF, buf, sizeof(buf), format, args); |
2cddf2ff | 169 | va_end(args); |
d62a17ae | 170 | |
807f5b98 | 171 | len = strlen(p); |
2cddf2ff QY |
172 | |
173 | /* filter buffer */ | |
174 | if (vty->filter) { | |
0b42d81a QY |
175 | vector lines = frrstr_split_vec(p, "\n"); |
176 | ||
177 | /* Place first value in the cache */ | |
178 | char *firstline = vector_slot(lines, 0); | |
179 | buffer_put(vty->lbuf, (uint8_t *) firstline, strlen(firstline)); | |
180 | ||
181 | /* If our split returned more than one entry, time to filter */ | |
182 | if (vector_active(lines) > 1) { | |
183 | /* | |
184 | * returned string is MTYPE_TMP so it matches the MTYPE | |
185 | * of everything else in the vector | |
186 | */ | |
187 | char *bstr = buffer_getstr(vty->lbuf); | |
188 | buffer_reset(vty->lbuf); | |
189 | XFREE(MTYPE_TMP, lines->index[0]); | |
190 | vector_set_index(lines, 0, bstr); | |
191 | frrstr_filter_vec(lines, &vty->include); | |
192 | vector_compact(lines); | |
193 | /* | |
194 | * Consider the string "foo\n". If the regex is an empty string | |
195 | * and the line ended with a newline, then the vector will look | |
196 | * like: | |
197 | * | |
198 | * [0]: 'foo' | |
199 | * [1]: '' | |
200 | * | |
201 | * If the regex isn't empty, the vector will look like: | |
202 | * | |
203 | * [0]: 'foo' | |
204 | * | |
205 | * In this case we'd like to preserve the newline, so we add | |
206 | * the empty string [1] as in the first example. | |
207 | */ | |
208 | if (p[strlen(p) - 1] == '\n' && vector_active(lines) > 0 | |
209 | && strlen(vector_slot(lines, vector_active(lines) - 1))) | |
210 | vector_set(lines, XSTRDUP(MTYPE_TMP, "")); | |
211 | ||
212 | filtered = frrstr_join_vec(lines, "\n"); | |
213 | } | |
214 | else { | |
215 | filtered = NULL; | |
216 | } | |
5d806ec6 | 217 | |
2cddf2ff | 218 | frrstr_strvec_free(lines); |
0b42d81a | 219 | |
2cddf2ff QY |
220 | } else { |
221 | filtered = p; | |
222 | } | |
d62a17ae | 223 | |
0b42d81a QY |
224 | if (!filtered) |
225 | goto done; | |
226 | ||
2cddf2ff QY |
227 | switch (vty->type) { |
228 | case VTY_TERM: | |
229 | /* print with crlf replacement */ | |
230 | buffer_put_crlf(vty->obuf, (uint8_t *)filtered, | |
231 | strlen(filtered)); | |
232 | break; | |
233 | case VTY_SHELL: | |
9934e1c9 | 234 | if (vty->of) { |
235 | fprintf(vty->of, "%s", filtered); | |
236 | fflush(vty->of); | |
237 | } else if (vty->of_saved) { | |
238 | fprintf(vty->of_saved, "%s", filtered); | |
239 | fflush(vty->of_saved); | |
240 | } | |
2cddf2ff QY |
241 | break; |
242 | case VTY_SHELL_SERV: | |
243 | case VTY_FILE: | |
244 | default: | |
245 | /* print without crlf replacement */ | |
246 | buffer_put(vty->obuf, (uint8_t *)filtered, strlen(filtered)); | |
247 | break; | |
d62a17ae | 248 | } |
249 | ||
0b42d81a QY |
250 | done: |
251 | ||
252 | if (vty->filter && filtered) | |
2cddf2ff QY |
253 | XFREE(MTYPE_TMP, filtered); |
254 | ||
255 | /* If p is not different with buf, it is allocated buffer. */ | |
256 | if (p != buf) | |
257 | XFREE(MTYPE_VTY_OUT_BUF, p); | |
258 | ||
d62a17ae | 259 | return len; |
260 | } | |
261 | ||
262 | static int vty_log_out(struct vty *vty, const char *level, | |
807f5b98 DL |
263 | const char *proto_str, const char *msg, |
264 | struct timestamp_control *ctl) | |
d62a17ae | 265 | { |
266 | int ret; | |
267 | int len; | |
268 | char buf[1024]; | |
269 | ||
270 | if (!ctl->already_rendered) { | |
271 | ctl->len = quagga_timestamp(ctl->precision, ctl->buf, | |
272 | sizeof(ctl->buf)); | |
273 | ctl->already_rendered = 1; | |
274 | } | |
275 | if (ctl->len + 1 >= sizeof(buf)) | |
276 | return -1; | |
277 | memcpy(buf, ctl->buf, len = ctl->len); | |
278 | buf[len++] = ' '; | |
279 | buf[len] = '\0'; | |
280 | ||
281 | if (level) | |
282 | ret = snprintf(buf + len, sizeof(buf) - len, "%s: %s: ", level, | |
283 | proto_str); | |
284 | else | |
285 | ret = snprintf(buf + len, sizeof(buf) - len, "%s: ", proto_str); | |
286 | if ((ret < 0) || ((size_t)(len += ret) >= sizeof(buf))) | |
287 | return -1; | |
288 | ||
807f5b98 | 289 | if (((ret = snprintf(buf + len, sizeof(buf) - len, "%s", msg)) < 0) |
d62a17ae | 290 | || ((size_t)((len += ret) + 2) > sizeof(buf))) |
291 | return -1; | |
292 | ||
293 | buf[len++] = '\r'; | |
294 | buf[len++] = '\n'; | |
295 | ||
296 | if (write(vty->wfd, buf, len) < 0) { | |
297 | if (ERRNO_IO_RETRY(errno)) | |
298 | /* Kernel buffer is full, probably too much debugging | |
299 | output, so just | |
300 | drop the data and ignore. */ | |
301 | return -1; | |
302 | /* Fatal I/O error. */ | |
303 | vty->monitor = | |
304 | 0; /* disable monitoring to avoid infinite recursion */ | |
450971aa | 305 | flog_err(EC_LIB_SOCKET, |
34699016 DS |
306 | "%s: write failed to vty client fd %d, closing: %s", |
307 | __func__, vty->fd, safe_strerror(errno)); | |
d62a17ae | 308 | buffer_reset(vty->obuf); |
0b42d81a | 309 | buffer_reset(vty->lbuf); |
d62a17ae | 310 | /* cannot call vty_close, because a parent routine may still try |
311 | to access the vty struct */ | |
312 | vty->status = VTY_CLOSE; | |
313 | shutdown(vty->fd, SHUT_RDWR); | |
314 | return -1; | |
315 | } | |
316 | return 0; | |
718e3744 | 317 | } |
318 | ||
319 | /* Output current time to the vty. */ | |
d62a17ae | 320 | void vty_time_print(struct vty *vty, int cr) |
718e3744 | 321 | { |
d62a17ae | 322 | char buf[QUAGGA_TIMESTAMP_LEN]; |
d0bfb22c | 323 | |
d62a17ae | 324 | if (quagga_timestamp(0, buf, sizeof(buf)) == 0) { |
325 | zlog_info("quagga_timestamp error"); | |
326 | return; | |
327 | } | |
328 | if (cr) | |
329 | vty_out(vty, "%s\n", buf); | |
330 | else | |
331 | vty_out(vty, "%s ", buf); | |
718e3744 | 332 | |
d62a17ae | 333 | return; |
718e3744 | 334 | } |
335 | ||
336 | /* Say hello to vty interface. */ | |
d62a17ae | 337 | void vty_hello(struct vty *vty) |
338 | { | |
339 | if (host.motdfile) { | |
340 | FILE *f; | |
341 | char buf[4096]; | |
342 | ||
343 | f = fopen(host.motdfile, "r"); | |
344 | if (f) { | |
345 | while (fgets(buf, sizeof(buf), f)) { | |
346 | char *s; | |
347 | /* work backwards to ignore trailling isspace() | |
348 | */ | |
349 | for (s = buf + strlen(buf); | |
fefa5e0f DL |
350 | (s > buf) && isspace((unsigned char)s[-1]); |
351 | s--) | |
d62a17ae | 352 | ; |
353 | *s = '\0'; | |
354 | vty_out(vty, "%s\n", buf); | |
355 | } | |
356 | fclose(f); | |
357 | } else | |
358 | vty_out(vty, "MOTD file not found\n"); | |
359 | } else if (host.motd) | |
360 | vty_out(vty, "%s", host.motd); | |
718e3744 | 361 | } |
362 | ||
363 | /* Put out prompt and wait input from user. */ | |
d62a17ae | 364 | static void vty_prompt(struct vty *vty) |
718e3744 | 365 | { |
d62a17ae | 366 | if (vty->type == VTY_TERM) { |
60466a63 | 367 | vty_out(vty, cmd_prompt(vty->node), cmd_hostname_get()); |
d62a17ae | 368 | } |
718e3744 | 369 | } |
370 | ||
371 | /* Send WILL TELOPT_ECHO to remote server. */ | |
d62a17ae | 372 | static void vty_will_echo(struct vty *vty) |
718e3744 | 373 | { |
d62a17ae | 374 | unsigned char cmd[] = {IAC, WILL, TELOPT_ECHO, '\0'}; |
375 | vty_out(vty, "%s", cmd); | |
718e3744 | 376 | } |
377 | ||
378 | /* Make suppress Go-Ahead telnet option. */ | |
d62a17ae | 379 | static void vty_will_suppress_go_ahead(struct vty *vty) |
718e3744 | 380 | { |
d62a17ae | 381 | unsigned char cmd[] = {IAC, WILL, TELOPT_SGA, '\0'}; |
382 | vty_out(vty, "%s", cmd); | |
718e3744 | 383 | } |
384 | ||
385 | /* Make don't use linemode over telnet. */ | |
d62a17ae | 386 | static void vty_dont_linemode(struct vty *vty) |
718e3744 | 387 | { |
d62a17ae | 388 | unsigned char cmd[] = {IAC, DONT, TELOPT_LINEMODE, '\0'}; |
389 | vty_out(vty, "%s", cmd); | |
718e3744 | 390 | } |
391 | ||
392 | /* Use window size. */ | |
d62a17ae | 393 | static void vty_do_window_size(struct vty *vty) |
718e3744 | 394 | { |
d62a17ae | 395 | unsigned char cmd[] = {IAC, DO, TELOPT_NAWS, '\0'}; |
396 | vty_out(vty, "%s", cmd); | |
718e3744 | 397 | } |
398 | ||
d62a17ae | 399 | #if 0 /* Currently not used. */ |
718e3744 | 400 | /* Make don't use lflow vty interface. */ |
401 | static void | |
402 | vty_dont_lflow_ahead (struct vty *vty) | |
403 | { | |
02ff83c5 | 404 | unsigned char cmd[] = { IAC, DONT, TELOPT_LFLOW, '\0' }; |
718e3744 | 405 | vty_out (vty, "%s", cmd); |
406 | } | |
407 | #endif /* 0 */ | |
408 | ||
718e3744 | 409 | /* Authentication of vty */ |
d62a17ae | 410 | static void vty_auth(struct vty *vty, char *buf) |
411 | { | |
412 | char *passwd = NULL; | |
413 | enum node_type next_node = 0; | |
414 | int fail; | |
415 | char *crypt(const char *, const char *); | |
416 | ||
417 | switch (vty->node) { | |
418 | case AUTH_NODE: | |
419 | if (host.encrypt) | |
420 | passwd = host.password_encrypt; | |
421 | else | |
422 | passwd = host.password; | |
423 | if (host.advanced) | |
424 | next_node = host.enable ? VIEW_NODE : ENABLE_NODE; | |
425 | else | |
426 | next_node = VIEW_NODE; | |
427 | break; | |
428 | case AUTH_ENABLE_NODE: | |
429 | if (host.encrypt) | |
430 | passwd = host.enable_encrypt; | |
431 | else | |
432 | passwd = host.enable; | |
433 | next_node = ENABLE_NODE; | |
434 | break; | |
435 | } | |
436 | ||
437 | if (passwd) { | |
438 | if (host.encrypt) | |
439 | fail = strcmp(crypt(buf, passwd), passwd); | |
440 | else | |
441 | fail = strcmp(buf, passwd); | |
442 | } else | |
443 | fail = 1; | |
444 | ||
445 | if (!fail) { | |
446 | vty->fail = 0; | |
447 | vty->node = next_node; /* Success ! */ | |
448 | } else { | |
449 | vty->fail++; | |
450 | if (vty->fail >= 3) { | |
451 | if (vty->node == AUTH_NODE) { | |
452 | vty_out(vty, | |
453 | "%% Bad passwords, too many failures!\n"); | |
454 | vty->status = VTY_CLOSE; | |
455 | } else { | |
456 | /* AUTH_ENABLE_NODE */ | |
457 | vty->fail = 0; | |
458 | vty_out(vty, | |
459 | "%% Bad enable passwords, too many failures!\n"); | |
460 | vty->status = VTY_CLOSE; | |
461 | } | |
462 | } | |
463 | } | |
718e3744 | 464 | } |
465 | ||
466 | /* Command execution over the vty interface. */ | |
d62a17ae | 467 | static int vty_command(struct vty *vty, char *buf) |
468 | { | |
469 | int ret; | |
d62a17ae | 470 | const char *protocolname; |
471 | char *cp = NULL; | |
472 | ||
b575a12c A |
473 | assert(vty); |
474 | ||
d62a17ae | 475 | /* |
476 | * Log non empty command lines | |
477 | */ | |
478 | if (do_log_commands) | |
479 | cp = buf; | |
480 | if (cp != NULL) { | |
481 | /* Skip white spaces. */ | |
fefa5e0f | 482 | while (isspace((unsigned char)*cp) && *cp != '\0') |
d62a17ae | 483 | cp++; |
484 | } | |
485 | if (cp != NULL && *cp != '\0') { | |
486 | unsigned i; | |
487 | char vty_str[VTY_BUFSIZ]; | |
488 | char prompt_str[VTY_BUFSIZ]; | |
489 | ||
490 | /* format the base vty info */ | |
491 | snprintf(vty_str, sizeof(vty_str), "vty[??]@%s", vty->address); | |
b575a12c A |
492 | |
493 | for (i = 0; i < vector_active(vtyvec); i++) | |
494 | if (vty == vector_slot(vtyvec, i)) { | |
495 | snprintf(vty_str, sizeof(vty_str), "vty[%d]@%s", | |
496 | i, vty->address); | |
497 | break; | |
498 | } | |
d62a17ae | 499 | |
500 | /* format the prompt */ | |
501 | snprintf(prompt_str, sizeof(prompt_str), cmd_prompt(vty->node), | |
502 | vty_str); | |
503 | ||
504 | /* now log the command */ | |
3ec8b5b8 | 505 | zlog_notice("%s%s", prompt_str, buf); |
d62a17ae | 506 | } |
718e3744 | 507 | |
924b9229 | 508 | #ifdef CONSUMED_TIME_CHECK |
d62a17ae | 509 | { |
510 | RUSAGE_T before; | |
511 | RUSAGE_T after; | |
512 | unsigned long realtime, cputime; | |
924b9229 | 513 | |
d62a17ae | 514 | GETRUSAGE(&before); |
924b9229 | 515 | #endif /* CONSUMED_TIME_CHECK */ |
516 | ||
fe6b47b9 | 517 | ret = cmd_execute(vty, buf, NULL, 0); |
718e3744 | 518 | |
d62a17ae | 519 | /* Get the name of the protocol if any */ |
520 | protocolname = frr_protoname; | |
d0bfb22c | 521 | |
924b9229 | 522 | #ifdef CONSUMED_TIME_CHECK |
d62a17ae | 523 | GETRUSAGE(&after); |
524 | if ((realtime = thread_consumed_time(&after, &before, &cputime)) | |
525 | > CONSUMED_TIME_CHECK) | |
526 | /* Warn about CPU hog that must be fixed. */ | |
34699016 | 527 | flog_warn( |
450971aa | 528 | EC_LIB_SLOW_THREAD, |
d62a17ae | 529 | "SLOW COMMAND: command took %lums (cpu time %lums): %s", |
530 | realtime / 1000, cputime / 1000, buf); | |
531 | } | |
924b9229 | 532 | #endif /* CONSUMED_TIME_CHECK */ |
533 | ||
d62a17ae | 534 | if (ret != CMD_SUCCESS) |
535 | switch (ret) { | |
536 | case CMD_WARNING: | |
537 | if (vty->type == VTY_FILE) | |
538 | vty_out(vty, "Warning...\n"); | |
539 | break; | |
540 | case CMD_ERR_AMBIGUOUS: | |
541 | vty_out(vty, "%% Ambiguous command.\n"); | |
542 | break; | |
543 | case CMD_ERR_NO_MATCH: | |
544 | vty_out(vty, "%% [%s] Unknown command: %s\n", | |
545 | protocolname, buf); | |
546 | break; | |
547 | case CMD_ERR_INCOMPLETE: | |
548 | vty_out(vty, "%% Command incomplete.\n"); | |
549 | break; | |
550 | } | |
d62a17ae | 551 | |
552 | return ret; | |
718e3744 | 553 | } |
6b0655a2 | 554 | |
9fc7ebf1 | 555 | static const char telnet_backward_char = 0x08; |
556 | static const char telnet_space_char = ' '; | |
718e3744 | 557 | |
558 | /* Basic function to write buffer to vty. */ | |
d62a17ae | 559 | static void vty_write(struct vty *vty, const char *buf, size_t nbytes) |
718e3744 | 560 | { |
d62a17ae | 561 | if ((vty->node == AUTH_NODE) || (vty->node == AUTH_ENABLE_NODE)) |
562 | return; | |
718e3744 | 563 | |
d62a17ae | 564 | /* Should we do buffering here ? And make vty_flush (vty) ? */ |
565 | buffer_put(vty->obuf, buf, nbytes); | |
718e3744 | 566 | } |
567 | ||
718e3744 | 568 | /* Basic function to insert character into vty. */ |
d62a17ae | 569 | static void vty_self_insert(struct vty *vty, char c) |
718e3744 | 570 | { |
d62a17ae | 571 | int i; |
572 | int length; | |
718e3744 | 573 | |
d62a17ae | 574 | if (vty->length + 1 >= VTY_BUFSIZ) |
575 | return; | |
2af38873 | 576 | |
d62a17ae | 577 | length = vty->length - vty->cp; |
578 | memmove(&vty->buf[vty->cp + 1], &vty->buf[vty->cp], length); | |
579 | vty->buf[vty->cp] = c; | |
718e3744 | 580 | |
d62a17ae | 581 | vty_write(vty, &vty->buf[vty->cp], length + 1); |
582 | for (i = 0; i < length; i++) | |
583 | vty_write(vty, &telnet_backward_char, 1); | |
718e3744 | 584 | |
d62a17ae | 585 | vty->cp++; |
586 | vty->length++; | |
d1e4a518 | 587 | |
d62a17ae | 588 | vty->buf[vty->length] = '\0'; |
718e3744 | 589 | } |
590 | ||
591 | /* Self insert character 'c' in overwrite mode. */ | |
d62a17ae | 592 | static void vty_self_insert_overwrite(struct vty *vty, char c) |
718e3744 | 593 | { |
d62a17ae | 594 | if (vty->cp == vty->length) { |
595 | vty_self_insert(vty, c); | |
596 | return; | |
597 | } | |
718e3744 | 598 | |
d62a17ae | 599 | vty->buf[vty->cp++] = c; |
600 | vty_write(vty, &c, 1); | |
718e3744 | 601 | } |
602 | ||
2af38873 QY |
603 | /** |
604 | * Insert a string into vty->buf at the current cursor position. | |
605 | * | |
606 | * If the resultant string would be larger than VTY_BUFSIZ it is | |
607 | * truncated to fit. | |
608 | */ | |
d62a17ae | 609 | static void vty_insert_word_overwrite(struct vty *vty, char *str) |
718e3744 | 610 | { |
d62a17ae | 611 | if (vty->cp == VTY_BUFSIZ) |
612 | return; | |
d1e4a518 | 613 | |
d62a17ae | 614 | size_t nwrite = MIN((int)strlen(str), VTY_BUFSIZ - vty->cp - 1); |
615 | memcpy(&vty->buf[vty->cp], str, nwrite); | |
616 | vty->cp += nwrite; | |
617 | vty->length = MAX(vty->cp, vty->length); | |
618 | vty->buf[vty->length] = '\0'; | |
619 | vty_write(vty, str, nwrite); | |
718e3744 | 620 | } |
621 | ||
622 | /* Forward character. */ | |
d62a17ae | 623 | static void vty_forward_char(struct vty *vty) |
718e3744 | 624 | { |
d62a17ae | 625 | if (vty->cp < vty->length) { |
626 | vty_write(vty, &vty->buf[vty->cp], 1); | |
627 | vty->cp++; | |
628 | } | |
718e3744 | 629 | } |
630 | ||
631 | /* Backward character. */ | |
d62a17ae | 632 | static void vty_backward_char(struct vty *vty) |
718e3744 | 633 | { |
d62a17ae | 634 | if (vty->cp > 0) { |
635 | vty->cp--; | |
636 | vty_write(vty, &telnet_backward_char, 1); | |
637 | } | |
718e3744 | 638 | } |
639 | ||
640 | /* Move to the beginning of the line. */ | |
d62a17ae | 641 | static void vty_beginning_of_line(struct vty *vty) |
718e3744 | 642 | { |
d62a17ae | 643 | while (vty->cp) |
644 | vty_backward_char(vty); | |
718e3744 | 645 | } |
646 | ||
647 | /* Move to the end of the line. */ | |
d62a17ae | 648 | static void vty_end_of_line(struct vty *vty) |
718e3744 | 649 | { |
d62a17ae | 650 | while (vty->cp < vty->length) |
651 | vty_forward_char(vty); | |
718e3744 | 652 | } |
653 | ||
d62a17ae | 654 | static void vty_kill_line_from_beginning(struct vty *); |
655 | static void vty_redraw_line(struct vty *); | |
718e3744 | 656 | |
657 | /* Print command line history. This function is called from | |
658 | vty_next_line and vty_previous_line. */ | |
d62a17ae | 659 | static void vty_history_print(struct vty *vty) |
718e3744 | 660 | { |
d62a17ae | 661 | int length; |
718e3744 | 662 | |
d62a17ae | 663 | vty_kill_line_from_beginning(vty); |
718e3744 | 664 | |
d62a17ae | 665 | /* Get previous line from history buffer */ |
666 | length = strlen(vty->hist[vty->hp]); | |
667 | memcpy(vty->buf, vty->hist[vty->hp], length); | |
668 | vty->cp = vty->length = length; | |
669 | vty->buf[vty->length] = '\0'; | |
718e3744 | 670 | |
d62a17ae | 671 | /* Redraw current line */ |
672 | vty_redraw_line(vty); | |
718e3744 | 673 | } |
674 | ||
675 | /* Show next command line history. */ | |
d62a17ae | 676 | static void vty_next_line(struct vty *vty) |
718e3744 | 677 | { |
d62a17ae | 678 | int try_index; |
718e3744 | 679 | |
d62a17ae | 680 | if (vty->hp == vty->hindex) |
681 | return; | |
718e3744 | 682 | |
d62a17ae | 683 | /* Try is there history exist or not. */ |
684 | try_index = vty->hp; | |
685 | if (try_index == (VTY_MAXHIST - 1)) | |
686 | try_index = 0; | |
687 | else | |
688 | try_index++; | |
718e3744 | 689 | |
d62a17ae | 690 | /* If there is not history return. */ |
691 | if (vty->hist[try_index] == NULL) | |
692 | return; | |
693 | else | |
694 | vty->hp = try_index; | |
718e3744 | 695 | |
d62a17ae | 696 | vty_history_print(vty); |
718e3744 | 697 | } |
698 | ||
699 | /* Show previous command line history. */ | |
d62a17ae | 700 | static void vty_previous_line(struct vty *vty) |
718e3744 | 701 | { |
d62a17ae | 702 | int try_index; |
718e3744 | 703 | |
d62a17ae | 704 | try_index = vty->hp; |
705 | if (try_index == 0) | |
706 | try_index = VTY_MAXHIST - 1; | |
707 | else | |
708 | try_index--; | |
718e3744 | 709 | |
d62a17ae | 710 | if (vty->hist[try_index] == NULL) |
711 | return; | |
712 | else | |
713 | vty->hp = try_index; | |
718e3744 | 714 | |
d62a17ae | 715 | vty_history_print(vty); |
718e3744 | 716 | } |
717 | ||
718 | /* This function redraw all of the command line character. */ | |
d62a17ae | 719 | static void vty_redraw_line(struct vty *vty) |
718e3744 | 720 | { |
d62a17ae | 721 | vty_write(vty, vty->buf, vty->length); |
722 | vty->cp = vty->length; | |
718e3744 | 723 | } |
724 | ||
725 | /* Forward word. */ | |
d62a17ae | 726 | static void vty_forward_word(struct vty *vty) |
718e3744 | 727 | { |
d62a17ae | 728 | while (vty->cp != vty->length && vty->buf[vty->cp] != ' ') |
729 | vty_forward_char(vty); | |
d0bfb22c | 730 | |
d62a17ae | 731 | while (vty->cp != vty->length && vty->buf[vty->cp] == ' ') |
732 | vty_forward_char(vty); | |
718e3744 | 733 | } |
734 | ||
735 | /* Backward word without skipping training space. */ | |
d62a17ae | 736 | static void vty_backward_pure_word(struct vty *vty) |
718e3744 | 737 | { |
d62a17ae | 738 | while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ') |
739 | vty_backward_char(vty); | |
718e3744 | 740 | } |
741 | ||
742 | /* Backward word. */ | |
d62a17ae | 743 | static void vty_backward_word(struct vty *vty) |
718e3744 | 744 | { |
d62a17ae | 745 | while (vty->cp > 0 && vty->buf[vty->cp - 1] == ' ') |
746 | vty_backward_char(vty); | |
718e3744 | 747 | |
d62a17ae | 748 | while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ') |
749 | vty_backward_char(vty); | |
718e3744 | 750 | } |
751 | ||
752 | /* When '^D' is typed at the beginning of the line we move to the down | |
753 | level. */ | |
d62a17ae | 754 | static void vty_down_level(struct vty *vty) |
718e3744 | 755 | { |
d62a17ae | 756 | vty_out(vty, "\n"); |
757 | cmd_exit(vty); | |
758 | vty_prompt(vty); | |
759 | vty->cp = 0; | |
718e3744 | 760 | } |
761 | ||
762 | /* When '^Z' is received from vty, move down to the enable mode. */ | |
d62a17ae | 763 | static void vty_end_config(struct vty *vty) |
764 | { | |
765 | vty_out(vty, "\n"); | |
766 | ||
cf09d3ca | 767 | if (vty->config) { |
f344c66e | 768 | vty_config_exit(vty); |
d62a17ae | 769 | vty->node = ENABLE_NODE; |
d62a17ae | 770 | } |
771 | ||
772 | vty_prompt(vty); | |
773 | vty->cp = 0; | |
718e3744 | 774 | } |
775 | ||
776 | /* Delete a charcter at the current point. */ | |
d62a17ae | 777 | static void vty_delete_char(struct vty *vty) |
718e3744 | 778 | { |
d62a17ae | 779 | int i; |
780 | int size; | |
718e3744 | 781 | |
d62a17ae | 782 | if (vty->length == 0) { |
783 | vty_down_level(vty); | |
784 | return; | |
785 | } | |
718e3744 | 786 | |
d62a17ae | 787 | if (vty->cp == vty->length) |
788 | return; /* completion need here? */ | |
718e3744 | 789 | |
d62a17ae | 790 | size = vty->length - vty->cp; |
718e3744 | 791 | |
d62a17ae | 792 | vty->length--; |
793 | memmove(&vty->buf[vty->cp], &vty->buf[vty->cp + 1], size - 1); | |
794 | vty->buf[vty->length] = '\0'; | |
d0bfb22c | 795 | |
d62a17ae | 796 | if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE) |
797 | return; | |
718e3744 | 798 | |
d62a17ae | 799 | vty_write(vty, &vty->buf[vty->cp], size - 1); |
800 | vty_write(vty, &telnet_space_char, 1); | |
718e3744 | 801 | |
d62a17ae | 802 | for (i = 0; i < size; i++) |
803 | vty_write(vty, &telnet_backward_char, 1); | |
718e3744 | 804 | } |
805 | ||
806 | /* Delete a character before the point. */ | |
d62a17ae | 807 | static void vty_delete_backward_char(struct vty *vty) |
718e3744 | 808 | { |
d62a17ae | 809 | if (vty->cp == 0) |
810 | return; | |
718e3744 | 811 | |
d62a17ae | 812 | vty_backward_char(vty); |
813 | vty_delete_char(vty); | |
718e3744 | 814 | } |
815 | ||
816 | /* Kill rest of line from current point. */ | |
d62a17ae | 817 | static void vty_kill_line(struct vty *vty) |
718e3744 | 818 | { |
d62a17ae | 819 | int i; |
820 | int size; | |
718e3744 | 821 | |
d62a17ae | 822 | size = vty->length - vty->cp; |
d0bfb22c | 823 | |
d62a17ae | 824 | if (size == 0) |
825 | return; | |
718e3744 | 826 | |
d62a17ae | 827 | for (i = 0; i < size; i++) |
828 | vty_write(vty, &telnet_space_char, 1); | |
829 | for (i = 0; i < size; i++) | |
830 | vty_write(vty, &telnet_backward_char, 1); | |
718e3744 | 831 | |
d62a17ae | 832 | memset(&vty->buf[vty->cp], 0, size); |
833 | vty->length = vty->cp; | |
718e3744 | 834 | } |
835 | ||
836 | /* Kill line from the beginning. */ | |
d62a17ae | 837 | static void vty_kill_line_from_beginning(struct vty *vty) |
718e3744 | 838 | { |
d62a17ae | 839 | vty_beginning_of_line(vty); |
840 | vty_kill_line(vty); | |
718e3744 | 841 | } |
842 | ||
843 | /* Delete a word before the point. */ | |
d62a17ae | 844 | static void vty_forward_kill_word(struct vty *vty) |
718e3744 | 845 | { |
d62a17ae | 846 | while (vty->cp != vty->length && vty->buf[vty->cp] == ' ') |
847 | vty_delete_char(vty); | |
848 | while (vty->cp != vty->length && vty->buf[vty->cp] != ' ') | |
849 | vty_delete_char(vty); | |
718e3744 | 850 | } |
851 | ||
852 | /* Delete a word before the point. */ | |
d62a17ae | 853 | static void vty_backward_kill_word(struct vty *vty) |
718e3744 | 854 | { |
d62a17ae | 855 | while (vty->cp > 0 && vty->buf[vty->cp - 1] == ' ') |
856 | vty_delete_backward_char(vty); | |
857 | while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ') | |
858 | vty_delete_backward_char(vty); | |
718e3744 | 859 | } |
860 | ||
861 | /* Transpose chars before or at the point. */ | |
d62a17ae | 862 | static void vty_transpose_chars(struct vty *vty) |
718e3744 | 863 | { |
d62a17ae | 864 | char c1, c2; |
718e3744 | 865 | |
d62a17ae | 866 | /* If length is short or point is near by the beginning of line then |
867 | return. */ | |
868 | if (vty->length < 2 || vty->cp < 1) | |
869 | return; | |
718e3744 | 870 | |
d62a17ae | 871 | /* In case of point is located at the end of the line. */ |
872 | if (vty->cp == vty->length) { | |
873 | c1 = vty->buf[vty->cp - 1]; | |
874 | c2 = vty->buf[vty->cp - 2]; | |
718e3744 | 875 | |
d62a17ae | 876 | vty_backward_char(vty); |
877 | vty_backward_char(vty); | |
878 | vty_self_insert_overwrite(vty, c1); | |
879 | vty_self_insert_overwrite(vty, c2); | |
880 | } else { | |
881 | c1 = vty->buf[vty->cp]; | |
882 | c2 = vty->buf[vty->cp - 1]; | |
718e3744 | 883 | |
d62a17ae | 884 | vty_backward_char(vty); |
885 | vty_self_insert_overwrite(vty, c1); | |
886 | vty_self_insert_overwrite(vty, c2); | |
887 | } | |
718e3744 | 888 | } |
889 | ||
890 | /* Do completion at vty interface. */ | |
d62a17ae | 891 | static void vty_complete_command(struct vty *vty) |
892 | { | |
893 | int i; | |
894 | int ret; | |
895 | char **matched = NULL; | |
896 | vector vline; | |
897 | ||
898 | if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE) | |
899 | return; | |
900 | ||
901 | vline = cmd_make_strvec(vty->buf); | |
902 | if (vline == NULL) | |
903 | return; | |
904 | ||
905 | /* In case of 'help \t'. */ | |
fefa5e0f | 906 | if (isspace((unsigned char)vty->buf[vty->length - 1])) |
d62a17ae | 907 | vector_set(vline, NULL); |
908 | ||
909 | matched = cmd_complete_command(vline, vty, &ret); | |
910 | ||
911 | cmd_free_strvec(vline); | |
912 | ||
913 | vty_out(vty, "\n"); | |
914 | switch (ret) { | |
915 | case CMD_ERR_AMBIGUOUS: | |
916 | vty_out(vty, "%% Ambiguous command.\n"); | |
917 | vty_prompt(vty); | |
918 | vty_redraw_line(vty); | |
919 | break; | |
920 | case CMD_ERR_NO_MATCH: | |
921 | /* vty_out (vty, "%% There is no matched command.\n"); */ | |
922 | vty_prompt(vty); | |
923 | vty_redraw_line(vty); | |
924 | break; | |
925 | case CMD_COMPLETE_FULL_MATCH: | |
926 | if (!matched[0]) { | |
927 | /* 2016-11-28 equinox -- need to debug, SEGV here */ | |
928 | vty_out(vty, "%% CLI BUG: FULL_MATCH with NULL str\n"); | |
929 | vty_prompt(vty); | |
930 | vty_redraw_line(vty); | |
931 | break; | |
932 | } | |
933 | vty_prompt(vty); | |
934 | vty_redraw_line(vty); | |
935 | vty_backward_pure_word(vty); | |
936 | vty_insert_word_overwrite(vty, matched[0]); | |
937 | vty_self_insert(vty, ' '); | |
938 | XFREE(MTYPE_COMPLETION, matched[0]); | |
939 | break; | |
940 | case CMD_COMPLETE_MATCH: | |
941 | vty_prompt(vty); | |
942 | vty_redraw_line(vty); | |
943 | vty_backward_pure_word(vty); | |
944 | vty_insert_word_overwrite(vty, matched[0]); | |
945 | XFREE(MTYPE_COMPLETION, matched[0]); | |
946 | break; | |
947 | case CMD_COMPLETE_LIST_MATCH: | |
948 | for (i = 0; matched[i] != NULL; i++) { | |
949 | if (i != 0 && ((i % 6) == 0)) | |
950 | vty_out(vty, "\n"); | |
951 | vty_out(vty, "%-10s ", matched[i]); | |
952 | XFREE(MTYPE_COMPLETION, matched[i]); | |
953 | } | |
954 | vty_out(vty, "\n"); | |
955 | ||
956 | vty_prompt(vty); | |
957 | vty_redraw_line(vty); | |
958 | break; | |
959 | case CMD_ERR_NOTHING_TODO: | |
960 | vty_prompt(vty); | |
961 | vty_redraw_line(vty); | |
962 | break; | |
963 | default: | |
964 | break; | |
965 | } | |
0a22ddfb | 966 | XFREE(MTYPE_TMP, matched); |
d62a17ae | 967 | } |
968 | ||
969 | static void vty_describe_fold(struct vty *vty, int cmd_width, | |
970 | unsigned int desc_width, struct cmd_token *token) | |
971 | { | |
972 | char *buf; | |
973 | const char *cmd, *p; | |
974 | int pos; | |
975 | ||
976 | cmd = token->text; | |
977 | ||
978 | if (desc_width <= 0) { | |
979 | vty_out(vty, " %-*s %s\n", cmd_width, cmd, token->desc); | |
980 | return; | |
981 | } | |
982 | ||
983 | buf = XCALLOC(MTYPE_TMP, strlen(token->desc) + 1); | |
984 | ||
985 | for (p = token->desc; strlen(p) > desc_width; p += pos + 1) { | |
986 | for (pos = desc_width; pos > 0; pos--) | |
987 | if (*(p + pos) == ' ') | |
988 | break; | |
989 | ||
990 | if (pos == 0) | |
991 | break; | |
992 | ||
fcb072cd | 993 | memcpy(buf, p, pos); |
d62a17ae | 994 | buf[pos] = '\0'; |
995 | vty_out(vty, " %-*s %s\n", cmd_width, cmd, buf); | |
996 | ||
997 | cmd = ""; | |
998 | } | |
999 | ||
1000 | vty_out(vty, " %-*s %s\n", cmd_width, cmd, p); | |
1001 | ||
1002 | XFREE(MTYPE_TMP, buf); | |
718e3744 | 1003 | } |
1004 | ||
1005 | /* Describe matched command function. */ | |
d62a17ae | 1006 | static void vty_describe_command(struct vty *vty) |
1007 | { | |
1008 | int ret; | |
1009 | vector vline; | |
1010 | vector describe; | |
1011 | unsigned int i, width, desc_width; | |
1012 | struct cmd_token *token, *token_cr = NULL; | |
1013 | ||
1014 | vline = cmd_make_strvec(vty->buf); | |
1015 | ||
1016 | /* In case of '> ?'. */ | |
1017 | if (vline == NULL) { | |
1018 | vline = vector_init(1); | |
1019 | vector_set(vline, NULL); | |
fefa5e0f | 1020 | } else if (isspace((unsigned char)vty->buf[vty->length - 1])) |
d62a17ae | 1021 | vector_set(vline, NULL); |
1022 | ||
1023 | describe = cmd_describe_command(vline, vty, &ret); | |
1024 | ||
1025 | vty_out(vty, "\n"); | |
1026 | ||
1027 | /* Ambiguous error. */ | |
1028 | switch (ret) { | |
1029 | case CMD_ERR_AMBIGUOUS: | |
1030 | vty_out(vty, "%% Ambiguous command.\n"); | |
1031 | goto out; | |
1032 | break; | |
1033 | case CMD_ERR_NO_MATCH: | |
1034 | vty_out(vty, "%% There is no matched command.\n"); | |
1035 | goto out; | |
1036 | break; | |
1037 | } | |
1038 | ||
1039 | /* Get width of command string. */ | |
1040 | width = 0; | |
1041 | for (i = 0; i < vector_active(describe); i++) | |
1042 | if ((token = vector_slot(describe, i)) != NULL) { | |
1043 | unsigned int len; | |
1044 | ||
1045 | if (token->text[0] == '\0') | |
1046 | continue; | |
1047 | ||
1048 | len = strlen(token->text); | |
1049 | ||
1050 | if (width < len) | |
1051 | width = len; | |
1052 | } | |
1053 | ||
1054 | /* Get width of description string. */ | |
1055 | desc_width = vty->width - (width + 6); | |
1056 | ||
1057 | /* Print out description. */ | |
1058 | for (i = 0; i < vector_active(describe); i++) | |
1059 | if ((token = vector_slot(describe, i)) != NULL) { | |
1060 | if (token->text[0] == '\0') | |
1061 | continue; | |
1062 | ||
1063 | if (strcmp(token->text, CMD_CR_TEXT) == 0) { | |
1064 | token_cr = token; | |
1065 | continue; | |
1066 | } | |
1067 | ||
1068 | if (!token->desc) | |
1069 | vty_out(vty, " %-s\n", token->text); | |
1070 | else if (desc_width >= strlen(token->desc)) | |
1071 | vty_out(vty, " %-*s %s\n", width, token->text, | |
1072 | token->desc); | |
1073 | else | |
1074 | vty_describe_fold(vty, width, desc_width, | |
1075 | token); | |
1076 | ||
1077 | if (IS_VARYING_TOKEN(token->type)) { | |
1078 | const char *ref = vector_slot( | |
1079 | vline, vector_active(vline) - 1); | |
1080 | ||
1081 | vector varcomps = vector_init(VECTOR_MIN_SIZE); | |
1082 | cmd_variable_complete(token, ref, varcomps); | |
1083 | ||
1084 | if (vector_active(varcomps) > 0) { | |
1085 | char *ac = cmd_variable_comp2str( | |
1086 | varcomps, vty->width); | |
1087 | vty_out(vty, "%s\n", ac); | |
1088 | XFREE(MTYPE_TMP, ac); | |
1089 | } | |
1090 | ||
1091 | vector_free(varcomps); | |
1092 | } | |
718e3744 | 1093 | #if 0 |
55f70b67 | 1094 | vty_out (vty, " %-*s %s\n", width |
d0bfb22c | 1095 | desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd, |
55f70b67 | 1096 | desc->str ? desc->str : ""); |
718e3744 | 1097 | #endif /* 0 */ |
d62a17ae | 1098 | } |
1099 | ||
1100 | if ((token = token_cr)) { | |
1101 | if (!token->desc) | |
1102 | vty_out(vty, " %-s\n", token->text); | |
1103 | else if (desc_width >= strlen(token->desc)) | |
1104 | vty_out(vty, " %-*s %s\n", width, token->text, | |
1105 | token->desc); | |
1106 | else | |
1107 | vty_describe_fold(vty, width, desc_width, token); | |
1108 | } | |
718e3744 | 1109 | |
2fe8aba3 | 1110 | out: |
d62a17ae | 1111 | cmd_free_strvec(vline); |
1112 | if (describe) | |
1113 | vector_free(describe); | |
718e3744 | 1114 | |
d62a17ae | 1115 | vty_prompt(vty); |
1116 | vty_redraw_line(vty); | |
718e3744 | 1117 | } |
1118 | ||
d62a17ae | 1119 | static void vty_clear_buf(struct vty *vty) |
718e3744 | 1120 | { |
d62a17ae | 1121 | memset(vty->buf, 0, vty->max); |
718e3744 | 1122 | } |
1123 | ||
1124 | /* ^C stop current input and do not add command line to the history. */ | |
d62a17ae | 1125 | static void vty_stop_input(struct vty *vty) |
1126 | { | |
1127 | vty->cp = vty->length = 0; | |
1128 | vty_clear_buf(vty); | |
1129 | vty_out(vty, "\n"); | |
1130 | ||
cf09d3ca | 1131 | if (vty->config) { |
f344c66e | 1132 | vty_config_exit(vty); |
d62a17ae | 1133 | vty->node = ENABLE_NODE; |
d62a17ae | 1134 | } |
cf09d3ca | 1135 | |
d62a17ae | 1136 | vty_prompt(vty); |
1137 | ||
1138 | /* Set history pointer to the latest one. */ | |
1139 | vty->hp = vty->hindex; | |
718e3744 | 1140 | } |
1141 | ||
1142 | /* Add current command line to the history buffer. */ | |
d62a17ae | 1143 | static void vty_hist_add(struct vty *vty) |
718e3744 | 1144 | { |
d62a17ae | 1145 | int index; |
718e3744 | 1146 | |
d62a17ae | 1147 | if (vty->length == 0) |
1148 | return; | |
718e3744 | 1149 | |
d62a17ae | 1150 | index = vty->hindex ? vty->hindex - 1 : VTY_MAXHIST - 1; |
718e3744 | 1151 | |
d62a17ae | 1152 | /* Ignore the same string as previous one. */ |
1153 | if (vty->hist[index]) | |
1154 | if (strcmp(vty->buf, vty->hist[index]) == 0) { | |
1155 | vty->hp = vty->hindex; | |
1156 | return; | |
1157 | } | |
718e3744 | 1158 | |
d62a17ae | 1159 | /* Insert history entry. */ |
0a22ddfb | 1160 | XFREE(MTYPE_VTY_HIST, vty->hist[vty->hindex]); |
d62a17ae | 1161 | vty->hist[vty->hindex] = XSTRDUP(MTYPE_VTY_HIST, vty->buf); |
718e3744 | 1162 | |
d62a17ae | 1163 | /* History index rotation. */ |
1164 | vty->hindex++; | |
1165 | if (vty->hindex == VTY_MAXHIST) | |
1166 | vty->hindex = 0; | |
718e3744 | 1167 | |
d62a17ae | 1168 | vty->hp = vty->hindex; |
718e3744 | 1169 | } |
1170 | ||
1171 | /* #define TELNET_OPTION_DEBUG */ | |
1172 | ||
1173 | /* Get telnet window size. */ | |
d62a17ae | 1174 | static int vty_telnet_option(struct vty *vty, unsigned char *buf, int nbytes) |
718e3744 | 1175 | { |
1176 | #ifdef TELNET_OPTION_DEBUG | |
d62a17ae | 1177 | int i; |
1178 | ||
1179 | for (i = 0; i < nbytes; i++) { | |
1180 | switch (buf[i]) { | |
1181 | case IAC: | |
1182 | vty_out(vty, "IAC "); | |
1183 | break; | |
1184 | case WILL: | |
1185 | vty_out(vty, "WILL "); | |
1186 | break; | |
1187 | case WONT: | |
1188 | vty_out(vty, "WONT "); | |
1189 | break; | |
1190 | case DO: | |
1191 | vty_out(vty, "DO "); | |
1192 | break; | |
1193 | case DONT: | |
1194 | vty_out(vty, "DONT "); | |
1195 | break; | |
1196 | case SB: | |
1197 | vty_out(vty, "SB "); | |
1198 | break; | |
1199 | case SE: | |
1200 | vty_out(vty, "SE "); | |
1201 | break; | |
1202 | case TELOPT_ECHO: | |
1203 | vty_out(vty, "TELOPT_ECHO \n"); | |
1204 | break; | |
1205 | case TELOPT_SGA: | |
1206 | vty_out(vty, "TELOPT_SGA \n"); | |
1207 | break; | |
1208 | case TELOPT_NAWS: | |
1209 | vty_out(vty, "TELOPT_NAWS \n"); | |
1210 | break; | |
1211 | default: | |
1212 | vty_out(vty, "%x ", buf[i]); | |
1213 | break; | |
1214 | } | |
1215 | } | |
1216 | vty_out(vty, "\n"); | |
718e3744 | 1217 | |
1218 | #endif /* TELNET_OPTION_DEBUG */ | |
1219 | ||
d62a17ae | 1220 | switch (buf[0]) { |
1221 | case SB: | |
1222 | vty->sb_len = 0; | |
1223 | vty->iac_sb_in_progress = 1; | |
1224 | return 0; | |
d62a17ae | 1225 | case SE: { |
1226 | if (!vty->iac_sb_in_progress) | |
1227 | return 0; | |
1228 | ||
1229 | if ((vty->sb_len == 0) || (vty->sb_buf[0] == '\0')) { | |
1230 | vty->iac_sb_in_progress = 0; | |
1231 | return 0; | |
1232 | } | |
1233 | switch (vty->sb_buf[0]) { | |
1234 | case TELOPT_NAWS: | |
1235 | if (vty->sb_len != TELNET_NAWS_SB_LEN) | |
34699016 | 1236 | flog_err( |
450971aa | 1237 | EC_LIB_SYSTEM_CALL, |
3efd0893 | 1238 | "RFC 1073 violation detected: telnet NAWS option should send %d characters, but we received %lu", |
d62a17ae | 1239 | TELNET_NAWS_SB_LEN, |
d7c0a89a | 1240 | (unsigned long)vty->sb_len); |
d62a17ae | 1241 | else if (sizeof(vty->sb_buf) < TELNET_NAWS_SB_LEN) |
af4c2728 | 1242 | flog_err( |
450971aa | 1243 | EC_LIB_DEVELOPMENT, |
472878dc | 1244 | "Bug detected: sizeof(vty->sb_buf) %lu < %d, too small to handle the telnet NAWS option", |
d7c0a89a | 1245 | (unsigned long)sizeof(vty->sb_buf), |
d62a17ae | 1246 | TELNET_NAWS_SB_LEN); |
1247 | else { | |
1248 | vty->width = ((vty->sb_buf[1] << 8) | |
1249 | | vty->sb_buf[2]); | |
1250 | vty->height = ((vty->sb_buf[3] << 8) | |
1251 | | vty->sb_buf[4]); | |
9fc7ebf1 | 1252 | #ifdef TELNET_OPTION_DEBUG |
d62a17ae | 1253 | vty_out(vty, |
3efd0893 | 1254 | "TELNET NAWS window size negotiation completed: width %d, height %d\n", |
d62a17ae | 1255 | vty->width, vty->height); |
9fc7ebf1 | 1256 | #endif |
d62a17ae | 1257 | } |
1258 | break; | |
1259 | } | |
1260 | vty->iac_sb_in_progress = 0; | |
1261 | return 0; | |
d62a17ae | 1262 | } |
1263 | default: | |
1264 | break; | |
1265 | } | |
1266 | return 1; | |
718e3744 | 1267 | } |
1268 | ||
1269 | /* Execute current command line. */ | |
d62a17ae | 1270 | static int vty_execute(struct vty *vty) |
718e3744 | 1271 | { |
d62a17ae | 1272 | int ret; |
718e3744 | 1273 | |
d62a17ae | 1274 | ret = CMD_SUCCESS; |
718e3744 | 1275 | |
d62a17ae | 1276 | switch (vty->node) { |
1277 | case AUTH_NODE: | |
1278 | case AUTH_ENABLE_NODE: | |
1279 | vty_auth(vty, vty->buf); | |
1280 | break; | |
1281 | default: | |
1282 | ret = vty_command(vty, vty->buf); | |
1283 | if (vty->type == VTY_TERM) | |
1284 | vty_hist_add(vty); | |
1285 | break; | |
1286 | } | |
718e3744 | 1287 | |
d62a17ae | 1288 | /* Clear command line buffer. */ |
1289 | vty->cp = vty->length = 0; | |
1290 | vty_clear_buf(vty); | |
718e3744 | 1291 | |
d62a17ae | 1292 | if (vty->status != VTY_CLOSE) |
1293 | vty_prompt(vty); | |
718e3744 | 1294 | |
d62a17ae | 1295 | return ret; |
718e3744 | 1296 | } |
1297 | ||
1298 | #define CONTROL(X) ((X) - '@') | |
1299 | #define VTY_NORMAL 0 | |
1300 | #define VTY_PRE_ESCAPE 1 | |
1301 | #define VTY_ESCAPE 2 | |
1302 | ||
1303 | /* Escape character command map. */ | |
d62a17ae | 1304 | static void vty_escape_map(unsigned char c, struct vty *vty) |
1305 | { | |
1306 | switch (c) { | |
1307 | case ('A'): | |
1308 | vty_previous_line(vty); | |
1309 | break; | |
1310 | case ('B'): | |
1311 | vty_next_line(vty); | |
1312 | break; | |
1313 | case ('C'): | |
1314 | vty_forward_char(vty); | |
1315 | break; | |
1316 | case ('D'): | |
1317 | vty_backward_char(vty); | |
1318 | break; | |
1319 | default: | |
1320 | break; | |
1321 | } | |
1322 | ||
1323 | /* Go back to normal mode. */ | |
1324 | vty->escape = VTY_NORMAL; | |
718e3744 | 1325 | } |
1326 | ||
1327 | /* Quit print out to the buffer. */ | |
d62a17ae | 1328 | static void vty_buffer_reset(struct vty *vty) |
718e3744 | 1329 | { |
d62a17ae | 1330 | buffer_reset(vty->obuf); |
0b42d81a | 1331 | buffer_reset(vty->lbuf); |
d62a17ae | 1332 | vty_prompt(vty); |
1333 | vty_redraw_line(vty); | |
718e3744 | 1334 | } |
1335 | ||
1336 | /* Read data via vty socket. */ | |
d62a17ae | 1337 | static int vty_read(struct thread *thread) |
1338 | { | |
1339 | int i; | |
1340 | int nbytes; | |
1341 | unsigned char buf[VTY_READ_BUFSIZ]; | |
1342 | ||
1343 | int vty_sock = THREAD_FD(thread); | |
1344 | struct vty *vty = THREAD_ARG(thread); | |
d62a17ae | 1345 | |
1346 | /* Read raw data from socket */ | |
1347 | if ((nbytes = read(vty->fd, buf, VTY_READ_BUFSIZ)) <= 0) { | |
1348 | if (nbytes < 0) { | |
1349 | if (ERRNO_IO_RETRY(errno)) { | |
1350 | vty_event(VTY_READ, vty_sock, vty); | |
1351 | return 0; | |
1352 | } | |
1353 | vty->monitor = 0; /* disable monitoring to avoid | |
1354 | infinite recursion */ | |
34699016 | 1355 | flog_err( |
450971aa | 1356 | EC_LIB_SOCKET, |
d62a17ae | 1357 | "%s: read error on vty client fd %d, closing: %s", |
1358 | __func__, vty->fd, safe_strerror(errno)); | |
1359 | buffer_reset(vty->obuf); | |
0b42d81a | 1360 | buffer_reset(vty->lbuf); |
d62a17ae | 1361 | } |
1362 | vty->status = VTY_CLOSE; | |
1363 | } | |
1364 | ||
1365 | for (i = 0; i < nbytes; i++) { | |
1366 | if (buf[i] == IAC) { | |
1367 | if (!vty->iac) { | |
1368 | vty->iac = 1; | |
1369 | continue; | |
1370 | } else { | |
1371 | vty->iac = 0; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | if (vty->iac_sb_in_progress && !vty->iac) { | |
1376 | if (vty->sb_len < sizeof(vty->sb_buf)) | |
1377 | vty->sb_buf[vty->sb_len] = buf[i]; | |
1378 | vty->sb_len++; | |
1379 | continue; | |
1380 | } | |
1381 | ||
1382 | if (vty->iac) { | |
1383 | /* In case of telnet command */ | |
1384 | int ret = 0; | |
1385 | ret = vty_telnet_option(vty, buf + i, nbytes - i); | |
1386 | vty->iac = 0; | |
1387 | i += ret; | |
1388 | continue; | |
1389 | } | |
1390 | ||
1391 | ||
1392 | if (vty->status == VTY_MORE) { | |
1393 | switch (buf[i]) { | |
1394 | case CONTROL('C'): | |
1395 | case 'q': | |
1396 | case 'Q': | |
1397 | vty_buffer_reset(vty); | |
1398 | break; | |
718e3744 | 1399 | #if 0 /* More line does not work for "show ip bgp". */ |
d0bfb22c QY |
1400 | case '\n': |
1401 | case '\r': | |
1402 | vty->status = VTY_MORELINE; | |
1403 | break; | |
718e3744 | 1404 | #endif |
d62a17ae | 1405 | default: |
1406 | break; | |
1407 | } | |
1408 | continue; | |
1409 | } | |
1410 | ||
1411 | /* Escape character. */ | |
1412 | if (vty->escape == VTY_ESCAPE) { | |
1413 | vty_escape_map(buf[i], vty); | |
1414 | continue; | |
1415 | } | |
1416 | ||
1417 | /* Pre-escape status. */ | |
1418 | if (vty->escape == VTY_PRE_ESCAPE) { | |
1419 | switch (buf[i]) { | |
1420 | case '[': | |
1421 | vty->escape = VTY_ESCAPE; | |
1422 | break; | |
1423 | case 'b': | |
1424 | vty_backward_word(vty); | |
1425 | vty->escape = VTY_NORMAL; | |
1426 | break; | |
1427 | case 'f': | |
1428 | vty_forward_word(vty); | |
1429 | vty->escape = VTY_NORMAL; | |
1430 | break; | |
1431 | case 'd': | |
1432 | vty_forward_kill_word(vty); | |
1433 | vty->escape = VTY_NORMAL; | |
1434 | break; | |
1435 | case CONTROL('H'): | |
1436 | case 0x7f: | |
1437 | vty_backward_kill_word(vty); | |
1438 | vty->escape = VTY_NORMAL; | |
1439 | break; | |
1440 | default: | |
1441 | vty->escape = VTY_NORMAL; | |
1442 | break; | |
1443 | } | |
1444 | continue; | |
1445 | } | |
1446 | ||
1447 | switch (buf[i]) { | |
1448 | case CONTROL('A'): | |
1449 | vty_beginning_of_line(vty); | |
1450 | break; | |
1451 | case CONTROL('B'): | |
1452 | vty_backward_char(vty); | |
1453 | break; | |
1454 | case CONTROL('C'): | |
1455 | vty_stop_input(vty); | |
1456 | break; | |
1457 | case CONTROL('D'): | |
1458 | vty_delete_char(vty); | |
1459 | break; | |
1460 | case CONTROL('E'): | |
1461 | vty_end_of_line(vty); | |
1462 | break; | |
1463 | case CONTROL('F'): | |
1464 | vty_forward_char(vty); | |
1465 | break; | |
1466 | case CONTROL('H'): | |
1467 | case 0x7f: | |
1468 | vty_delete_backward_char(vty); | |
1469 | break; | |
1470 | case CONTROL('K'): | |
1471 | vty_kill_line(vty); | |
1472 | break; | |
1473 | case CONTROL('N'): | |
1474 | vty_next_line(vty); | |
1475 | break; | |
1476 | case CONTROL('P'): | |
1477 | vty_previous_line(vty); | |
1478 | break; | |
1479 | case CONTROL('T'): | |
1480 | vty_transpose_chars(vty); | |
1481 | break; | |
1482 | case CONTROL('U'): | |
1483 | vty_kill_line_from_beginning(vty); | |
1484 | break; | |
1485 | case CONTROL('W'): | |
1486 | vty_backward_kill_word(vty); | |
1487 | break; | |
1488 | case CONTROL('Z'): | |
1489 | vty_end_config(vty); | |
1490 | break; | |
1491 | case '\n': | |
1492 | case '\r': | |
1493 | vty_out(vty, "\n"); | |
1494 | vty_execute(vty); | |
1495 | break; | |
1496 | case '\t': | |
1497 | vty_complete_command(vty); | |
1498 | break; | |
1499 | case '?': | |
1500 | if (vty->node == AUTH_NODE | |
1501 | || vty->node == AUTH_ENABLE_NODE) | |
1502 | vty_self_insert(vty, buf[i]); | |
1503 | else | |
1504 | vty_describe_command(vty); | |
1505 | break; | |
1506 | case '\033': | |
1507 | if (i + 1 < nbytes && buf[i + 1] == '[') { | |
1508 | vty->escape = VTY_ESCAPE; | |
1509 | i++; | |
1510 | } else | |
1511 | vty->escape = VTY_PRE_ESCAPE; | |
1512 | break; | |
1513 | default: | |
1514 | if (buf[i] > 31 && buf[i] < 127) | |
1515 | vty_self_insert(vty, buf[i]); | |
1516 | break; | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | /* Check status. */ | |
1521 | if (vty->status == VTY_CLOSE) | |
1522 | vty_close(vty); | |
1523 | else { | |
1524 | vty_event(VTY_WRITE, vty->wfd, vty); | |
1525 | vty_event(VTY_READ, vty_sock, vty); | |
1526 | } | |
1527 | return 0; | |
718e3744 | 1528 | } |
1529 | ||
1530 | /* Flush buffer to the vty. */ | |
d62a17ae | 1531 | static int vty_flush(struct thread *thread) |
1532 | { | |
1533 | int erase; | |
1534 | buffer_status_t flushrc; | |
1535 | int vty_sock = THREAD_FD(thread); | |
1536 | struct vty *vty = THREAD_ARG(thread); | |
1537 | ||
d62a17ae | 1538 | /* Tempolary disable read thread. */ |
43b8ca99 DS |
1539 | if (vty->lines == 0) |
1540 | THREAD_OFF(vty->t_read); | |
d62a17ae | 1541 | |
1542 | /* Function execution continue. */ | |
1543 | erase = ((vty->status == VTY_MORE || vty->status == VTY_MORELINE)); | |
1544 | ||
1545 | /* N.B. if width is 0, that means we don't know the window size. */ | |
1546 | if ((vty->lines == 0) || (vty->width == 0) || (vty->height == 0)) | |
1547 | flushrc = buffer_flush_available(vty->obuf, vty_sock); | |
1548 | else if (vty->status == VTY_MORELINE) | |
1549 | flushrc = buffer_flush_window(vty->obuf, vty_sock, vty->width, | |
1550 | 1, erase, 0); | |
1551 | else | |
1552 | flushrc = buffer_flush_window( | |
1553 | vty->obuf, vty_sock, vty->width, | |
1554 | vty->lines >= 0 ? vty->lines : vty->height, erase, 0); | |
1555 | switch (flushrc) { | |
1556 | case BUFFER_ERROR: | |
1557 | vty->monitor = | |
1558 | 0; /* disable monitoring to avoid infinite recursion */ | |
34699016 | 1559 | zlog_info("buffer_flush failed on vty client fd %d, closing", |
d62a17ae | 1560 | vty->fd); |
0b42d81a | 1561 | buffer_reset(vty->lbuf); |
d62a17ae | 1562 | buffer_reset(vty->obuf); |
1563 | vty_close(vty); | |
1564 | return 0; | |
1565 | case BUFFER_EMPTY: | |
1566 | if (vty->status == VTY_CLOSE) | |
1567 | vty_close(vty); | |
1568 | else { | |
1569 | vty->status = VTY_NORMAL; | |
1570 | if (vty->lines == 0) | |
1571 | vty_event(VTY_READ, vty_sock, vty); | |
1572 | } | |
1573 | break; | |
1574 | case BUFFER_PENDING: | |
1575 | /* There is more data waiting to be written. */ | |
1576 | vty->status = VTY_MORE; | |
1577 | if (vty->lines == 0) | |
1578 | vty_event(VTY_WRITE, vty_sock, vty); | |
1579 | break; | |
1580 | } | |
1581 | ||
1582 | return 0; | |
718e3744 | 1583 | } |
1584 | ||
2cddf2ff | 1585 | /* Allocate new vty struct. */ |
4d762f26 | 1586 | struct vty *vty_new(void) |
2cddf2ff QY |
1587 | { |
1588 | struct vty *new = XCALLOC(MTYPE_VTY, sizeof(struct vty)); | |
1589 | ||
1590 | new->fd = new->wfd = -1; | |
6ef6e4f0 | 1591 | new->of = stdout; |
0b42d81a | 1592 | new->lbuf = buffer_new(0); |
2cddf2ff QY |
1593 | new->obuf = buffer_new(0); /* Use default buffer size. */ |
1594 | new->buf = XCALLOC(MTYPE_VTY, VTY_BUFSIZ); | |
2cddf2ff QY |
1595 | new->max = VTY_BUFSIZ; |
1596 | ||
1597 | return new; | |
1598 | } | |
1599 | ||
1600 | ||
b7642925 | 1601 | /* allocate and initialise vty */ |
d62a17ae | 1602 | static struct vty *vty_new_init(int vty_sock) |
1603 | { | |
1604 | struct vty *vty; | |
1605 | ||
1606 | vty = vty_new(); | |
1607 | vty->fd = vty_sock; | |
1608 | vty->wfd = vty_sock; | |
1609 | vty->type = VTY_TERM; | |
1610 | vty->node = AUTH_NODE; | |
1611 | vty->fail = 0; | |
1612 | vty->cp = 0; | |
1613 | vty_clear_buf(vty); | |
1614 | vty->length = 0; | |
1615 | memset(vty->hist, 0, sizeof(vty->hist)); | |
1616 | vty->hp = 0; | |
1617 | vty->hindex = 0; | |
1c2facd1 RW |
1618 | vty->xpath_index = 0; |
1619 | memset(vty->xpath, 0, sizeof(vty->xpath)); | |
1620 | vty->private_config = false; | |
1621 | vty->candidate_config = vty_shared_candidate_config; | |
d62a17ae | 1622 | vector_set_index(vtyvec, vty_sock, vty); |
1623 | vty->status = VTY_NORMAL; | |
1624 | vty->lines = -1; | |
1625 | vty->iac = 0; | |
1626 | vty->iac_sb_in_progress = 0; | |
1627 | vty->sb_len = 0; | |
1628 | ||
1629 | return vty; | |
b7642925 DL |
1630 | } |
1631 | ||
718e3744 | 1632 | /* Create new vty structure. */ |
d62a17ae | 1633 | static struct vty *vty_create(int vty_sock, union sockunion *su) |
1634 | { | |
1635 | char buf[SU_ADDRSTRLEN]; | |
1636 | struct vty *vty; | |
1637 | ||
1638 | sockunion2str(su, buf, SU_ADDRSTRLEN); | |
1639 | ||
1640 | /* Allocate new vty structure and set up default values. */ | |
1641 | vty = vty_new_init(vty_sock); | |
1642 | ||
1643 | /* configurable parameters not part of basic init */ | |
1644 | vty->v_timeout = vty_timeout_val; | |
9f73d2c9 | 1645 | strlcpy(vty->address, buf, sizeof(vty->address)); |
d62a17ae | 1646 | if (no_password_check) { |
1647 | if (host.advanced) | |
1648 | vty->node = ENABLE_NODE; | |
1649 | else | |
1650 | vty->node = VIEW_NODE; | |
1651 | } | |
1652 | if (host.lines >= 0) | |
1653 | vty->lines = host.lines; | |
1654 | ||
1655 | if (!no_password_check) { | |
1656 | /* Vty is not available if password isn't set. */ | |
1657 | if (host.password == NULL && host.password_encrypt == NULL) { | |
1658 | vty_out(vty, "Vty password is not set.\n"); | |
1659 | vty->status = VTY_CLOSE; | |
1660 | vty_close(vty); | |
1661 | return NULL; | |
1662 | } | |
1663 | } | |
1664 | ||
1665 | /* Say hello to the world. */ | |
1666 | vty_hello(vty); | |
1667 | if (!no_password_check) | |
1668 | vty_out(vty, "\nUser Access Verification\n\n"); | |
1669 | ||
1670 | /* Setting up terminal. */ | |
1671 | vty_will_echo(vty); | |
1672 | vty_will_suppress_go_ahead(vty); | |
1673 | ||
1674 | vty_dont_linemode(vty); | |
1675 | vty_do_window_size(vty); | |
1676 | /* vty_dont_lflow_ahead (vty); */ | |
1677 | ||
1678 | vty_prompt(vty); | |
1679 | ||
1680 | /* Add read/write thread. */ | |
1681 | vty_event(VTY_WRITE, vty_sock, vty); | |
1682 | vty_event(VTY_READ, vty_sock, vty); | |
1683 | ||
1684 | return vty; | |
718e3744 | 1685 | } |
1686 | ||
b7642925 | 1687 | /* create vty for stdio */ |
b510a06e DL |
1688 | static struct termios stdio_orig_termios; |
1689 | static struct vty *stdio_vty = NULL; | |
154b9e8f DL |
1690 | static bool stdio_termios = false; |
1691 | static void (*stdio_vty_atclose)(int isexit); | |
b510a06e | 1692 | |
154b9e8f | 1693 | static void vty_stdio_reset(int isexit) |
b510a06e | 1694 | { |
d62a17ae | 1695 | if (stdio_vty) { |
154b9e8f DL |
1696 | if (stdio_termios) |
1697 | tcsetattr(0, TCSANOW, &stdio_orig_termios); | |
1698 | stdio_termios = false; | |
1699 | ||
d62a17ae | 1700 | stdio_vty = NULL; |
dbf78092 | 1701 | |
d62a17ae | 1702 | if (stdio_vty_atclose) |
154b9e8f | 1703 | stdio_vty_atclose(isexit); |
d62a17ae | 1704 | stdio_vty_atclose = NULL; |
1705 | } | |
b510a06e DL |
1706 | } |
1707 | ||
154b9e8f DL |
1708 | static void vty_stdio_atexit(void) |
1709 | { | |
1710 | vty_stdio_reset(1); | |
1711 | } | |
1712 | ||
1713 | void vty_stdio_suspend(void) | |
1714 | { | |
1715 | if (!stdio_vty) | |
1716 | return; | |
1717 | ||
43b8ca99 DS |
1718 | THREAD_OFF(stdio_vty->t_write); |
1719 | THREAD_OFF(stdio_vty->t_read); | |
1720 | THREAD_OFF(stdio_vty->t_timeout); | |
154b9e8f DL |
1721 | |
1722 | if (stdio_termios) | |
1723 | tcsetattr(0, TCSANOW, &stdio_orig_termios); | |
1724 | stdio_termios = false; | |
1725 | } | |
1726 | ||
1727 | void vty_stdio_resume(void) | |
1728 | { | |
1729 | if (!stdio_vty) | |
1730 | return; | |
1731 | ||
1732 | if (!tcgetattr(0, &stdio_orig_termios)) { | |
1733 | struct termios termios; | |
1734 | ||
1735 | termios = stdio_orig_termios; | |
1736 | termios.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | |
1737 | | IGNCR | ICRNL | IXON); | |
1738 | termios.c_oflag &= ~OPOST; | |
1739 | termios.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN); | |
1740 | termios.c_cflag &= ~(CSIZE | PARENB); | |
1741 | termios.c_cflag |= CS8; | |
1742 | tcsetattr(0, TCSANOW, &termios); | |
1743 | stdio_termios = true; | |
1744 | } | |
1745 | ||
1746 | vty_prompt(stdio_vty); | |
1747 | ||
1748 | /* Add read/write thread. */ | |
1749 | vty_event(VTY_WRITE, 1, stdio_vty); | |
1750 | vty_event(VTY_READ, 0, stdio_vty); | |
1751 | } | |
1752 | ||
1753 | void vty_stdio_close(void) | |
1754 | { | |
1755 | if (!stdio_vty) | |
1756 | return; | |
1757 | vty_close(stdio_vty); | |
1758 | } | |
1759 | ||
1760 | struct vty *vty_stdio(void (*atclose)(int isexit)) | |
b7642925 | 1761 | { |
d62a17ae | 1762 | struct vty *vty; |
b7642925 | 1763 | |
d62a17ae | 1764 | /* refuse creating two vtys on stdio */ |
1765 | if (stdio_vty) | |
1766 | return NULL; | |
b510a06e | 1767 | |
d62a17ae | 1768 | vty = stdio_vty = vty_new_init(0); |
1769 | stdio_vty_atclose = atclose; | |
1770 | vty->wfd = 1; | |
b7642925 | 1771 | |
d62a17ae | 1772 | /* always have stdio vty in a known _unchangeable_ state, don't want |
1773 | * config | |
1774 | * to have any effect here to make sure scripting this works as intended | |
1775 | */ | |
1776 | vty->node = ENABLE_NODE; | |
1777 | vty->v_timeout = 0; | |
9f73d2c9 | 1778 | strlcpy(vty->address, "console", sizeof(vty->address)); |
b7642925 | 1779 | |
154b9e8f | 1780 | vty_stdio_resume(); |
d62a17ae | 1781 | return vty; |
b7642925 DL |
1782 | } |
1783 | ||
718e3744 | 1784 | /* Accept connection from the network. */ |
d62a17ae | 1785 | static int vty_accept(struct thread *thread) |
1786 | { | |
1787 | int vty_sock; | |
1788 | union sockunion su; | |
1789 | int ret; | |
1790 | unsigned int on; | |
1791 | int accept_sock; | |
1792 | struct prefix p; | |
1793 | struct access_list *acl = NULL; | |
1794 | char buf[SU_ADDRSTRLEN]; | |
1795 | ||
1796 | accept_sock = THREAD_FD(thread); | |
1797 | ||
1798 | /* We continue hearing vty socket. */ | |
1799 | vty_event(VTY_SERV, accept_sock, NULL); | |
1800 | ||
1801 | memset(&su, 0, sizeof(union sockunion)); | |
1802 | ||
1803 | /* We can handle IPv4 or IPv6 socket. */ | |
1804 | vty_sock = sockunion_accept(accept_sock, &su); | |
1805 | if (vty_sock < 0) { | |
450971aa | 1806 | flog_err(EC_LIB_SOCKET, "can't accept vty socket : %s", |
34699016 | 1807 | safe_strerror(errno)); |
d62a17ae | 1808 | return -1; |
1809 | } | |
1810 | set_nonblocking(vty_sock); | |
1811 | set_cloexec(vty_sock); | |
1812 | ||
1813 | sockunion2hostprefix(&su, &p); | |
1814 | ||
1815 | /* VTY's accesslist apply. */ | |
1816 | if (p.family == AF_INET && vty_accesslist_name) { | |
1817 | if ((acl = access_list_lookup(AFI_IP, vty_accesslist_name)) | |
1818 | && (access_list_apply(acl, &p) == FILTER_DENY)) { | |
1819 | zlog_info("Vty connection refused from %s", | |
1820 | sockunion2str(&su, buf, SU_ADDRSTRLEN)); | |
1821 | close(vty_sock); | |
1822 | ||
1823 | /* continue accepting connections */ | |
1824 | vty_event(VTY_SERV, accept_sock, NULL); | |
1825 | ||
1826 | return 0; | |
1827 | } | |
1828 | } | |
1829 | ||
1830 | /* VTY's ipv6 accesslist apply. */ | |
1831 | if (p.family == AF_INET6 && vty_ipv6_accesslist_name) { | |
1832 | if ((acl = access_list_lookup(AFI_IP6, | |
1833 | vty_ipv6_accesslist_name)) | |
1834 | && (access_list_apply(acl, &p) == FILTER_DENY)) { | |
1835 | zlog_info("Vty connection refused from %s", | |
1836 | sockunion2str(&su, buf, SU_ADDRSTRLEN)); | |
1837 | close(vty_sock); | |
1838 | ||
1839 | /* continue accepting connections */ | |
1840 | vty_event(VTY_SERV, accept_sock, NULL); | |
1841 | ||
1842 | return 0; | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | on = 1; | |
1847 | ret = setsockopt(vty_sock, IPPROTO_TCP, TCP_NODELAY, (char *)&on, | |
1848 | sizeof(on)); | |
1849 | if (ret < 0) | |
1850 | zlog_info("can't set sockopt to vty_sock : %s", | |
1851 | safe_strerror(errno)); | |
1852 | ||
1853 | zlog_info("Vty connection from %s", | |
1854 | sockunion2str(&su, buf, SU_ADDRSTRLEN)); | |
1855 | ||
1856 | vty_create(vty_sock, &su); | |
1857 | ||
1858 | return 0; | |
1859 | } | |
1860 | ||
1861 | static void vty_serv_sock_addrinfo(const char *hostname, unsigned short port) | |
1862 | { | |
1863 | int ret; | |
1864 | struct addrinfo req; | |
1865 | struct addrinfo *ainfo; | |
1866 | struct addrinfo *ainfo_save; | |
1867 | int sock; | |
1868 | char port_str[BUFSIZ]; | |
1869 | ||
1870 | memset(&req, 0, sizeof(struct addrinfo)); | |
1871 | req.ai_flags = AI_PASSIVE; | |
1872 | req.ai_family = AF_UNSPEC; | |
1873 | req.ai_socktype = SOCK_STREAM; | |
772270f3 | 1874 | snprintf(port_str, sizeof(port_str), "%d", port); |
d62a17ae | 1875 | port_str[sizeof(port_str) - 1] = '\0'; |
1876 | ||
1877 | ret = getaddrinfo(hostname, port_str, &req, &ainfo); | |
1878 | ||
1879 | if (ret != 0) { | |
450971aa | 1880 | flog_err_sys(EC_LIB_SYSTEM_CALL, "getaddrinfo failed: %s", |
09c866e3 | 1881 | gai_strerror(ret)); |
d62a17ae | 1882 | exit(1); |
1883 | } | |
1884 | ||
1885 | ainfo_save = ainfo; | |
1886 | ||
1887 | do { | |
1888 | if (ainfo->ai_family != AF_INET && ainfo->ai_family != AF_INET6) | |
1889 | continue; | |
1890 | ||
1891 | sock = socket(ainfo->ai_family, ainfo->ai_socktype, | |
1892 | ainfo->ai_protocol); | |
1893 | if (sock < 0) | |
1894 | continue; | |
718e3744 | 1895 | |
d62a17ae | 1896 | sockopt_v6only(ainfo->ai_family, sock); |
1897 | sockopt_reuseaddr(sock); | |
1898 | sockopt_reuseport(sock); | |
1899 | set_cloexec(sock); | |
1900 | ||
1901 | ret = bind(sock, ainfo->ai_addr, ainfo->ai_addrlen); | |
1902 | if (ret < 0) { | |
1903 | close(sock); /* Avoid sd leak. */ | |
1904 | continue; | |
1905 | } | |
1906 | ||
1907 | ret = listen(sock, 3); | |
1908 | if (ret < 0) { | |
1909 | close(sock); /* Avoid sd leak. */ | |
1910 | continue; | |
1911 | } | |
1912 | ||
1913 | vty_event(VTY_SERV, sock, NULL); | |
1914 | } while ((ainfo = ainfo->ai_next) != NULL); | |
1915 | ||
1916 | freeaddrinfo(ainfo_save); | |
718e3744 | 1917 | } |
718e3744 | 1918 | |
1919 | #ifdef VTYSH | |
1920 | /* For sockaddr_un. */ | |
1921 | #include <sys/un.h> | |
1922 | ||
1923 | /* VTY shell UNIX domain socket. */ | |
d62a17ae | 1924 | static void vty_serv_un(const char *path) |
1925 | { | |
1926 | int ret; | |
1927 | int sock, len; | |
1928 | struct sockaddr_un serv; | |
1929 | mode_t old_mask; | |
1930 | struct zprivs_ids_t ids; | |
1931 | ||
1932 | /* First of all, unlink existing socket */ | |
1933 | unlink(path); | |
1934 | ||
1935 | /* Set umask */ | |
1936 | old_mask = umask(0007); | |
1937 | ||
1938 | /* Make UNIX domain socket. */ | |
1939 | sock = socket(AF_UNIX, SOCK_STREAM, 0); | |
1940 | if (sock < 0) { | |
450971aa | 1941 | flog_err_sys(EC_LIB_SOCKET, |
09c866e3 QY |
1942 | "Cannot create unix stream socket: %s", |
1943 | safe_strerror(errno)); | |
d62a17ae | 1944 | return; |
1945 | } | |
1946 | ||
1947 | /* Make server socket. */ | |
1948 | memset(&serv, 0, sizeof(struct sockaddr_un)); | |
1949 | serv.sun_family = AF_UNIX; | |
1950 | strlcpy(serv.sun_path, path, sizeof(serv.sun_path)); | |
6f0e3f6e | 1951 | #ifdef HAVE_STRUCT_SOCKADDR_UN_SUN_LEN |
d62a17ae | 1952 | len = serv.sun_len = SUN_LEN(&serv); |
718e3744 | 1953 | #else |
d62a17ae | 1954 | len = sizeof(serv.sun_family) + strlen(serv.sun_path); |
6f0e3f6e | 1955 | #endif /* HAVE_STRUCT_SOCKADDR_UN_SUN_LEN */ |
718e3744 | 1956 | |
d62a17ae | 1957 | set_cloexec(sock); |
2da59394 | 1958 | |
d62a17ae | 1959 | ret = bind(sock, (struct sockaddr *)&serv, len); |
1960 | if (ret < 0) { | |
450971aa | 1961 | flog_err_sys(EC_LIB_SOCKET, "Cannot bind path %s: %s", path, |
09c866e3 | 1962 | safe_strerror(errno)); |
d62a17ae | 1963 | close(sock); /* Avoid sd leak. */ |
1964 | return; | |
1965 | } | |
718e3744 | 1966 | |
d62a17ae | 1967 | ret = listen(sock, 5); |
1968 | if (ret < 0) { | |
450971aa | 1969 | flog_err_sys(EC_LIB_SOCKET, "listen(fd %d) failed: %s", sock, |
09c866e3 | 1970 | safe_strerror(errno)); |
d62a17ae | 1971 | close(sock); /* Avoid sd leak. */ |
1972 | return; | |
1973 | } | |
718e3744 | 1974 | |
d62a17ae | 1975 | umask(old_mask); |
718e3744 | 1976 | |
d62a17ae | 1977 | zprivs_get_ids(&ids); |
d0bfb22c | 1978 | |
d62a17ae | 1979 | /* Hack: ids.gid_vty is actually a uint, but we stored -1 in it |
1980 | earlier for the case when we don't need to chown the file | |
1981 | type casting it here to make a compare */ | |
1982 | if ((int)ids.gid_vty > 0) { | |
1983 | /* set group of socket */ | |
1984 | if (chown(path, -1, ids.gid_vty)) { | |
450971aa | 1985 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
1986 | "vty_serv_un: could chown socket, %s", |
1987 | safe_strerror(errno)); | |
d62a17ae | 1988 | } |
1989 | } | |
edd7c245 | 1990 | |
d62a17ae | 1991 | vty_event(VTYSH_SERV, sock, NULL); |
718e3744 | 1992 | } |
1993 | ||
1994 | /* #define VTYSH_DEBUG 1 */ | |
1995 | ||
d62a17ae | 1996 | static int vtysh_accept(struct thread *thread) |
718e3744 | 1997 | { |
d62a17ae | 1998 | int accept_sock; |
1999 | int sock; | |
2000 | int client_len; | |
2001 | struct sockaddr_un client; | |
2002 | struct vty *vty; | |
d0bfb22c | 2003 | |
d62a17ae | 2004 | accept_sock = THREAD_FD(thread); |
718e3744 | 2005 | |
d62a17ae | 2006 | vty_event(VTYSH_SERV, accept_sock, NULL); |
718e3744 | 2007 | |
d62a17ae | 2008 | memset(&client, 0, sizeof(struct sockaddr_un)); |
2009 | client_len = sizeof(struct sockaddr_un); | |
718e3744 | 2010 | |
d62a17ae | 2011 | sock = accept(accept_sock, (struct sockaddr *)&client, |
2012 | (socklen_t *)&client_len); | |
718e3744 | 2013 | |
d62a17ae | 2014 | if (sock < 0) { |
450971aa | 2015 | flog_err(EC_LIB_SOCKET, "can't accept vty socket : %s", |
34699016 | 2016 | safe_strerror(errno)); |
d62a17ae | 2017 | return -1; |
2018 | } | |
718e3744 | 2019 | |
d62a17ae | 2020 | if (set_nonblocking(sock) < 0) { |
34699016 | 2021 | flog_err( |
450971aa | 2022 | EC_LIB_SOCKET, |
34699016 | 2023 | "vtysh_accept: could not set vty socket %d to non-blocking, %s, closing", |
d62a17ae | 2024 | sock, safe_strerror(errno)); |
2025 | close(sock); | |
2026 | return -1; | |
2027 | } | |
2028 | set_cloexec(sock); | |
2da59394 | 2029 | |
718e3744 | 2030 | #ifdef VTYSH_DEBUG |
d62a17ae | 2031 | printf("VTY shell accept\n"); |
718e3744 | 2032 | #endif /* VTYSH_DEBUG */ |
2033 | ||
d62a17ae | 2034 | vty = vty_new(); |
2035 | vty->fd = sock; | |
2036 | vty->wfd = sock; | |
2037 | vty->type = VTY_SHELL_SERV; | |
2038 | vty->node = VIEW_NODE; | |
2039 | ||
2040 | vty_event(VTYSH_READ, sock, vty); | |
2041 | ||
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | static int vtysh_flush(struct vty *vty) | |
2046 | { | |
2047 | switch (buffer_flush_available(vty->obuf, vty->wfd)) { | |
2048 | case BUFFER_PENDING: | |
2049 | vty_event(VTYSH_WRITE, vty->wfd, vty); | |
2050 | break; | |
2051 | case BUFFER_ERROR: | |
2052 | vty->monitor = | |
2053 | 0; /* disable monitoring to avoid infinite recursion */ | |
450971aa | 2054 | flog_err(EC_LIB_SOCKET, "%s: write error to fd %d, closing", |
34699016 | 2055 | __func__, vty->fd); |
0b42d81a | 2056 | buffer_reset(vty->lbuf); |
d62a17ae | 2057 | buffer_reset(vty->obuf); |
2058 | vty_close(vty); | |
2059 | return -1; | |
d62a17ae | 2060 | case BUFFER_EMPTY: |
2061 | break; | |
2062 | } | |
2063 | return 0; | |
2064 | } | |
2065 | ||
2066 | static int vtysh_read(struct thread *thread) | |
2067 | { | |
2068 | int ret; | |
2069 | int sock; | |
2070 | int nbytes; | |
2071 | struct vty *vty; | |
2072 | unsigned char buf[VTY_READ_BUFSIZ]; | |
2073 | unsigned char *p; | |
d7c0a89a | 2074 | uint8_t header[4] = {0, 0, 0, 0}; |
d62a17ae | 2075 | |
2076 | sock = THREAD_FD(thread); | |
2077 | vty = THREAD_ARG(thread); | |
d62a17ae | 2078 | |
2079 | if ((nbytes = read(sock, buf, VTY_READ_BUFSIZ)) <= 0) { | |
2080 | if (nbytes < 0) { | |
2081 | if (ERRNO_IO_RETRY(errno)) { | |
2082 | vty_event(VTYSH_READ, sock, vty); | |
2083 | return 0; | |
2084 | } | |
2085 | vty->monitor = 0; /* disable monitoring to avoid | |
2086 | infinite recursion */ | |
34699016 | 2087 | flog_err( |
450971aa | 2088 | EC_LIB_SOCKET, |
d62a17ae | 2089 | "%s: read failed on vtysh client fd %d, closing: %s", |
2090 | __func__, sock, safe_strerror(errno)); | |
2091 | } | |
0b42d81a | 2092 | buffer_reset(vty->lbuf); |
d62a17ae | 2093 | buffer_reset(vty->obuf); |
2094 | vty_close(vty); | |
718e3744 | 2095 | #ifdef VTYSH_DEBUG |
d62a17ae | 2096 | printf("close vtysh\n"); |
718e3744 | 2097 | #endif /* VTYSH_DEBUG */ |
d62a17ae | 2098 | return 0; |
2099 | } | |
718e3744 | 2100 | |
2101 | #ifdef VTYSH_DEBUG | |
d62a17ae | 2102 | printf("line: %.*s\n", nbytes, buf); |
718e3744 | 2103 | #endif /* VTYSH_DEBUG */ |
2104 | ||
d62a17ae | 2105 | if (vty->length + nbytes >= VTY_BUFSIZ) { |
2106 | /* Clear command line buffer. */ | |
2107 | vty->cp = vty->length = 0; | |
2108 | vty_clear_buf(vty); | |
2109 | vty_out(vty, "%% Command is too long.\n"); | |
2110 | } else { | |
2111 | for (p = buf; p < buf + nbytes; p++) { | |
2112 | vty->buf[vty->length++] = *p; | |
2113 | if (*p == '\0') { | |
2114 | /* Pass this line to parser. */ | |
2115 | ret = vty_execute(vty); | |
2116 | /* Note that vty_execute clears the command buffer and resets | |
2117 | vty->length to 0. */ | |
2118 | ||
2119 | /* Return result. */ | |
718e3744 | 2120 | #ifdef VTYSH_DEBUG |
d62a17ae | 2121 | printf("result: %d\n", ret); |
2122 | printf("vtysh node: %d\n", vty->node); | |
718e3744 | 2123 | #endif /* VTYSH_DEBUG */ |
2124 | ||
d62a17ae | 2125 | /* hack for asynchronous "write integrated" |
2126 | * - other commands in "buf" will be ditched | |
2127 | * - input during pending config-write is | |
2128 | * "unsupported" */ | |
2129 | if (ret == CMD_SUSPEND) | |
2130 | break; | |
95c4aff2 | 2131 | |
d62a17ae | 2132 | /* warning: watchfrr hardcodes this result write |
2133 | */ | |
2134 | header[3] = ret; | |
2135 | buffer_put(vty->obuf, header, 4); | |
9fc7ebf1 | 2136 | |
d62a17ae | 2137 | if (!vty->t_write && (vtysh_flush(vty) < 0)) |
2138 | /* Try to flush results; exit if a write | |
2139 | * error occurs. */ | |
2140 | return 0; | |
2141 | } | |
2142 | } | |
2143 | } | |
718e3744 | 2144 | |
d62a17ae | 2145 | if (vty->status == VTY_CLOSE) |
2146 | vty_close(vty); | |
2147 | else | |
2148 | vty_event(VTYSH_READ, sock, vty); | |
718e3744 | 2149 | |
d62a17ae | 2150 | return 0; |
718e3744 | 2151 | } |
49ff6d9d | 2152 | |
d62a17ae | 2153 | static int vtysh_write(struct thread *thread) |
49ff6d9d | 2154 | { |
d62a17ae | 2155 | struct vty *vty = THREAD_ARG(thread); |
49ff6d9d | 2156 | |
d62a17ae | 2157 | vtysh_flush(vty); |
2158 | return 0; | |
49ff6d9d | 2159 | } |
2160 | ||
718e3744 | 2161 | #endif /* VTYSH */ |
2162 | ||
2163 | /* Determine address family to bind. */ | |
d62a17ae | 2164 | void vty_serv_sock(const char *addr, unsigned short port, const char *path) |
718e3744 | 2165 | { |
d62a17ae | 2166 | /* If port is set to 0, do not listen on TCP/IP at all! */ |
2167 | if (port) | |
2168 | vty_serv_sock_addrinfo(addr, port); | |
718e3744 | 2169 | |
2170 | #ifdef VTYSH | |
d62a17ae | 2171 | vty_serv_un(path); |
718e3744 | 2172 | #endif /* VTYSH */ |
2173 | } | |
2174 | ||
7ab57d19 DS |
2175 | static void vty_error_delete(void *arg) |
2176 | { | |
2177 | struct vty_error *ve = arg; | |
2178 | ||
2179 | XFREE(MTYPE_TMP, ve); | |
2180 | } | |
2181 | ||
9d0a3260 AS |
2182 | /* Close vty interface. Warning: call this only from functions that |
2183 | will be careful not to access the vty afterwards (since it has | |
2184 | now been freed). This is safest from top-level functions (called | |
2185 | directly by the thread dispatcher). */ | |
d62a17ae | 2186 | void vty_close(struct vty *vty) |
718e3744 | 2187 | { |
d62a17ae | 2188 | int i; |
2189 | bool was_stdio = false; | |
718e3744 | 2190 | |
791ded4a DL |
2191 | /* Drop out of configure / transaction if needed. */ |
2192 | vty_config_exit(vty); | |
2193 | ||
d62a17ae | 2194 | /* Cancel threads.*/ |
43b8ca99 DS |
2195 | THREAD_OFF(vty->t_read); |
2196 | THREAD_OFF(vty->t_write); | |
2197 | THREAD_OFF(vty->t_timeout); | |
718e3744 | 2198 | |
d62a17ae | 2199 | /* Flush buffer. */ |
2200 | buffer_flush_all(vty->obuf, vty->wfd); | |
718e3744 | 2201 | |
d62a17ae | 2202 | /* Free input buffer. */ |
2203 | buffer_free(vty->obuf); | |
0b42d81a | 2204 | buffer_free(vty->lbuf); |
718e3744 | 2205 | |
d62a17ae | 2206 | /* Free command history. */ |
0a22ddfb QY |
2207 | for (i = 0; i < VTY_MAXHIST; i++) { |
2208 | XFREE(MTYPE_VTY_HIST, vty->hist[i]); | |
2209 | } | |
718e3744 | 2210 | |
d62a17ae | 2211 | /* Unset vector. */ |
10b8a9c0 DL |
2212 | if (vty->fd != -1) |
2213 | vector_unset(vtyvec, vty->fd); | |
718e3744 | 2214 | |
d62a17ae | 2215 | if (vty->wfd > 0 && vty->type == VTY_FILE) |
2216 | fsync(vty->wfd); | |
056cfe49 | 2217 | |
10b8a9c0 DL |
2218 | /* Close socket. |
2219 | * note check is for fd > STDERR_FILENO, not fd != -1. | |
2220 | * We never close stdin/stdout/stderr here, because we may be | |
2221 | * running in foreground mode with logging to stdout. Also, | |
2222 | * additionally, we'd need to replace these fds with /dev/null. */ | |
2223 | if (vty->wfd > STDERR_FILENO && vty->wfd != vty->fd) | |
2224 | close(vty->wfd); | |
572e2644 | 2225 | if (vty->fd > STDERR_FILENO) |
d62a17ae | 2226 | close(vty->fd); |
572e2644 | 2227 | if (vty->fd == STDIN_FILENO) |
d62a17ae | 2228 | was_stdio = true; |
718e3744 | 2229 | |
0a22ddfb | 2230 | XFREE(MTYPE_VTY, vty->buf); |
718e3744 | 2231 | |
7ab57d19 DS |
2232 | if (vty->error) { |
2233 | vty->error->del = vty_error_delete; | |
2234 | list_delete(&vty->error); | |
2235 | } | |
5689fe5f | 2236 | |
d62a17ae | 2237 | /* OK free vty. */ |
2238 | XFREE(MTYPE_VTY, vty); | |
dd03f8ca | 2239 | |
d62a17ae | 2240 | if (was_stdio) |
154b9e8f | 2241 | vty_stdio_reset(0); |
718e3744 | 2242 | } |
2243 | ||
2244 | /* When time out occur output message then close connection. */ | |
d62a17ae | 2245 | static int vty_timeout(struct thread *thread) |
718e3744 | 2246 | { |
d62a17ae | 2247 | struct vty *vty; |
718e3744 | 2248 | |
d62a17ae | 2249 | vty = THREAD_ARG(thread); |
d62a17ae | 2250 | vty->v_timeout = 0; |
718e3744 | 2251 | |
d62a17ae | 2252 | /* Clear buffer*/ |
0b42d81a | 2253 | buffer_reset(vty->lbuf); |
d62a17ae | 2254 | buffer_reset(vty->obuf); |
2255 | vty_out(vty, "\nVty connection is timed out.\n"); | |
718e3744 | 2256 | |
d62a17ae | 2257 | /* Close connection. */ |
2258 | vty->status = VTY_CLOSE; | |
2259 | vty_close(vty); | |
718e3744 | 2260 | |
d62a17ae | 2261 | return 0; |
718e3744 | 2262 | } |
2263 | ||
2264 | /* Read up configuration file from file_name. */ | |
1c2facd1 | 2265 | static void vty_read_file(struct nb_config *config, FILE *confp) |
d62a17ae | 2266 | { |
2267 | int ret; | |
2268 | struct vty *vty; | |
7ab57d19 DS |
2269 | struct vty_error *ve; |
2270 | struct listnode *node; | |
d62a17ae | 2271 | unsigned int line_num = 0; |
2272 | ||
2273 | vty = vty_new(); | |
10b8a9c0 DL |
2274 | /* vty_close won't close stderr; if some config command prints |
2275 | * something it'll end up there. (not ideal; it'd be beter if output | |
2276 | * from a file-load went to logging instead. Also note that if this | |
2277 | * function is called after daemonizing, stderr will be /dev/null.) | |
2278 | * | |
2279 | * vty->fd will be -1 from vty_new() | |
2280 | */ | |
2281 | vty->wfd = STDERR_FILENO; | |
d62a17ae | 2282 | vty->type = VTY_FILE; |
2283 | vty->node = CONFIG_NODE; | |
eaf6705d | 2284 | vty->config = true; |
1c2facd1 RW |
2285 | if (config) |
2286 | vty->candidate_config = config; | |
2287 | else { | |
2288 | vty->private_config = true; | |
2289 | vty->candidate_config = nb_config_new(NULL); | |
2290 | } | |
d62a17ae | 2291 | |
2292 | /* Execute configuration file */ | |
2293 | ret = config_from_file(vty, confp, &line_num); | |
2294 | ||
2295 | /* Flush any previous errors before printing messages below */ | |
10b8a9c0 | 2296 | buffer_flush_all(vty->obuf, vty->wfd); |
d62a17ae | 2297 | |
2298 | if (!((ret == CMD_SUCCESS) || (ret == CMD_ERR_NOTHING_TODO))) { | |
2299 | const char *message = NULL; | |
b4fa7c95 DL |
2300 | char *nl; |
2301 | ||
d62a17ae | 2302 | switch (ret) { |
2303 | case CMD_ERR_AMBIGUOUS: | |
b4fa7c95 | 2304 | message = "Ambiguous command"; |
d62a17ae | 2305 | break; |
2306 | case CMD_ERR_NO_MATCH: | |
b4fa7c95 | 2307 | message = "No such command"; |
d62a17ae | 2308 | break; |
c539c389 DS |
2309 | case CMD_WARNING: |
2310 | message = "Command returned Warning"; | |
2311 | break; | |
2312 | case CMD_WARNING_CONFIG_FAILED: | |
2313 | message = "Command returned Warning Config Failed"; | |
2314 | break; | |
2315 | case CMD_ERR_INCOMPLETE: | |
2316 | message = "Command returned Incomplete"; | |
2317 | break; | |
2318 | case CMD_ERR_EXEED_ARGC_MAX: | |
996c9314 LB |
2319 | message = |
2320 | "Command exceeded maximum number of Arguments"; | |
c539c389 DS |
2321 | break; |
2322 | default: | |
2323 | message = "Command returned unhandled error message"; | |
2324 | break; | |
d62a17ae | 2325 | } |
b4fa7c95 | 2326 | |
7ab57d19 DS |
2327 | for (ALL_LIST_ELEMENTS_RO(vty->error, node, ve)) { |
2328 | nl = strchr(ve->error_buf, '\n'); | |
2329 | if (nl) | |
2330 | *nl = '\0'; | |
2331 | flog_err(EC_LIB_VTY, "ERROR: %s on config line %u: %s", | |
2332 | message, ve->line_num, ve->error_buf); | |
2333 | } | |
d62a17ae | 2334 | } |
2335 | ||
1c2facd1 RW |
2336 | /* |
2337 | * Automatically commit the candidate configuration after | |
2338 | * reading the configuration file. | |
2339 | */ | |
91f9fd78 | 2340 | if (config == NULL) { |
13d6b9c1 | 2341 | struct nb_context context = {}; |
df5eda3d | 2342 | char errmsg[BUFSIZ] = {0}; |
13d6b9c1 RW |
2343 | |
2344 | context.client = NB_CLIENT_CLI; | |
2345 | context.user = vty; | |
2346 | ret = nb_candidate_commit(&context, vty->candidate_config, true, | |
df5eda3d RW |
2347 | "Read configuration file", NULL, |
2348 | errmsg, sizeof(errmsg)); | |
1c2facd1 | 2349 | if (ret != NB_OK && ret != NB_ERR_NO_CHANGES) |
df5eda3d RW |
2350 | zlog_err( |
2351 | "%s: failed to read configuration file: %s (%s)", | |
2352 | __func__, nb_err_name(ret), errmsg); | |
1c2facd1 RW |
2353 | } |
2354 | ||
d62a17ae | 2355 | vty_close(vty); |
2356 | } | |
2357 | ||
2358 | static FILE *vty_use_backup_config(const char *fullpath) | |
2359 | { | |
2360 | char *fullpath_sav, *fullpath_tmp; | |
2361 | FILE *ret = NULL; | |
2362 | int tmp, sav; | |
2363 | int c; | |
2364 | char buffer[512]; | |
2365 | ||
9f73d2c9 QY |
2366 | size_t fullpath_sav_sz = strlen(fullpath) + strlen(CONF_BACKUP_EXT) + 1; |
2367 | fullpath_sav = malloc(fullpath_sav_sz); | |
2368 | strlcpy(fullpath_sav, fullpath, fullpath_sav_sz); | |
2369 | strlcat(fullpath_sav, CONF_BACKUP_EXT, fullpath_sav_sz); | |
d62a17ae | 2370 | |
2371 | sav = open(fullpath_sav, O_RDONLY); | |
2372 | if (sav < 0) { | |
2373 | free(fullpath_sav); | |
2374 | return NULL; | |
2375 | } | |
2376 | ||
2377 | fullpath_tmp = malloc(strlen(fullpath) + 8); | |
fc746f1c | 2378 | snprintf(fullpath_tmp, strlen(fullpath) + 8, "%s.XXXXXX", fullpath); |
d62a17ae | 2379 | |
2380 | /* Open file to configuration write. */ | |
2381 | tmp = mkstemp(fullpath_tmp); | |
2382 | if (tmp < 0) | |
2383 | goto out_close_sav; | |
2384 | ||
2385 | if (fchmod(tmp, CONFIGFILE_MASK) != 0) | |
2386 | goto out_close; | |
2387 | ||
2388 | while ((c = read(sav, buffer, 512)) > 0) { | |
2389 | if (write(tmp, buffer, c) <= 0) | |
2390 | goto out_close; | |
2391 | } | |
2392 | close(sav); | |
2393 | close(tmp); | |
2394 | ||
2395 | if (rename(fullpath_tmp, fullpath) == 0) | |
2396 | ret = fopen(fullpath, "r"); | |
2397 | else | |
2398 | unlink(fullpath_tmp); | |
2399 | ||
2400 | if (0) { | |
2401 | out_close: | |
2402 | close(tmp); | |
2403 | unlink(fullpath_tmp); | |
2404 | out_close_sav: | |
2405 | close(sav); | |
2406 | } | |
2407 | ||
2408 | free(fullpath_sav); | |
2409 | free(fullpath_tmp); | |
2410 | return ret; | |
718e3744 | 2411 | } |
2412 | ||
2413 | /* Read up configuration file from file_name. */ | |
1c2facd1 RW |
2414 | bool vty_read_config(struct nb_config *config, const char *config_file, |
2415 | char *config_default_dir) | |
d62a17ae | 2416 | { |
2417 | char cwd[MAXPATHLEN]; | |
2418 | FILE *confp = NULL; | |
2419 | const char *fullpath; | |
2420 | char *tmp = NULL; | |
5ede5e4e | 2421 | bool read_success = false; |
d62a17ae | 2422 | |
2423 | /* If -f flag specified. */ | |
2424 | if (config_file != NULL) { | |
2425 | if (!IS_DIRECTORY_SEP(config_file[0])) { | |
2426 | if (getcwd(cwd, MAXPATHLEN) == NULL) { | |
09c866e3 | 2427 | flog_err_sys( |
450971aa | 2428 | EC_LIB_SYSTEM_CALL, |
1c2facd1 RW |
2429 | "%s: failure to determine Current Working Directory %d!", |
2430 | __func__, errno); | |
2431 | goto tmp_free_and_out; | |
d62a17ae | 2432 | } |
2433 | tmp = XMALLOC(MTYPE_TMP, | |
2434 | strlen(cwd) + strlen(config_file) + 2); | |
2435 | sprintf(tmp, "%s/%s", cwd, config_file); | |
2436 | fullpath = tmp; | |
2437 | } else | |
2438 | fullpath = config_file; | |
2439 | ||
2440 | confp = fopen(fullpath, "r"); | |
2441 | ||
2442 | if (confp == NULL) { | |
34699016 | 2443 | flog_warn( |
450971aa | 2444 | EC_LIB_BACKUP_CONFIG, |
34699016 DS |
2445 | "%s: failed to open configuration file %s: %s, checking backup", |
2446 | __func__, fullpath, safe_strerror(errno)); | |
d62a17ae | 2447 | |
2448 | confp = vty_use_backup_config(fullpath); | |
2449 | if (confp) | |
34699016 | 2450 | flog_warn( |
450971aa | 2451 | EC_LIB_BACKUP_CONFIG, |
996c9314 | 2452 | "WARNING: using backup configuration file!"); |
d62a17ae | 2453 | else { |
1c2facd1 RW |
2454 | flog_err( |
2455 | EC_LIB_VTY, | |
2456 | "%s: can't open configuration file [%s]", | |
2457 | __func__, config_file); | |
2458 | goto tmp_free_and_out; | |
d62a17ae | 2459 | } |
2460 | } | |
2461 | } else { | |
2462 | ||
2463 | host_config_set(config_default_dir); | |
a7222276 | 2464 | |
718e3744 | 2465 | #ifdef VTYSH |
d62a17ae | 2466 | int ret; |
2467 | struct stat conf_stat; | |
2468 | ||
2469 | /* !!!!PLEASE LEAVE!!!! | |
2470 | * This is NEEDED for use with vtysh -b, or else you can get | |
2471 | * a real configuration food fight with a lot garbage in the | |
2472 | * merged configuration file it creates coming from the per | |
2473 | * daemon configuration files. This also allows the daemons | |
2474 | * to start if there default configuration file is not | |
2475 | * present or ignore them, as needed when using vtysh -b to | |
2476 | * configure the daemons at boot - MAG | |
2477 | */ | |
2478 | ||
2479 | /* Stat for vtysh Zebra.conf, if found startup and wait for | |
2480 | * boot configuration | |
2481 | */ | |
2482 | ||
2483 | if (strstr(config_default_dir, "vtysh") == NULL) { | |
2484 | ret = stat(integrate_default, &conf_stat); | |
5ede5e4e DS |
2485 | if (ret >= 0) { |
2486 | read_success = true; | |
d62a17ae | 2487 | goto tmp_free_and_out; |
5ede5e4e | 2488 | } |
d62a17ae | 2489 | } |
a7222276 | 2490 | #endif /* VTYSH */ |
d62a17ae | 2491 | confp = fopen(config_default_dir, "r"); |
2492 | if (confp == NULL) { | |
34699016 | 2493 | flog_err( |
450971aa | 2494 | EC_LIB_SYSTEM_CALL, |
34699016 DS |
2495 | "%s: failed to open configuration file %s: %s, checking backup", |
2496 | __func__, config_default_dir, | |
2497 | safe_strerror(errno)); | |
d62a17ae | 2498 | |
2499 | confp = vty_use_backup_config(config_default_dir); | |
2500 | if (confp) { | |
34699016 | 2501 | flog_warn( |
450971aa | 2502 | EC_LIB_BACKUP_CONFIG, |
996c9314 | 2503 | "WARNING: using backup configuration file!"); |
d62a17ae | 2504 | fullpath = config_default_dir; |
2505 | } else { | |
450971aa | 2506 | flog_err(EC_LIB_VTY, |
1c50c1c0 QY |
2507 | "can't open configuration file [%s]", |
2508 | config_default_dir); | |
d62a17ae | 2509 | goto tmp_free_and_out; |
2510 | } | |
2511 | } else | |
2512 | fullpath = config_default_dir; | |
2513 | } | |
2514 | ||
1c2facd1 | 2515 | vty_read_file(config, confp); |
5ede5e4e | 2516 | read_success = true; |
d62a17ae | 2517 | |
2518 | fclose(confp); | |
2519 | ||
2520 | host_config_set(fullpath); | |
6eda6425 DS |
2521 | |
2522 | tmp_free_and_out: | |
0a22ddfb | 2523 | XFREE(MTYPE_TMP, tmp); |
5ede5e4e DS |
2524 | |
2525 | return read_success; | |
718e3744 | 2526 | } |
2527 | ||
2528 | /* Small utility function which output log to the VTY. */ | |
807f5b98 DL |
2529 | void vty_log(const char *level, const char *proto_str, const char *msg, |
2530 | struct timestamp_control *ctl) | |
718e3744 | 2531 | { |
d62a17ae | 2532 | unsigned int i; |
2533 | struct vty *vty; | |
d0bfb22c | 2534 | |
d62a17ae | 2535 | if (!vtyvec) |
2536 | return; | |
718e3744 | 2537 | |
d62a17ae | 2538 | for (i = 0; i < vector_active(vtyvec); i++) |
2539 | if ((vty = vector_slot(vtyvec, i)) != NULL) | |
807f5b98 DL |
2540 | if (vty->monitor) |
2541 | vty_log_out(vty, level, proto_str, msg, ctl); | |
718e3744 | 2542 | } |
2543 | ||
274a4a44 | 2544 | /* Async-signal-safe version of vty_log for fixed strings. */ |
d62a17ae | 2545 | void vty_log_fixed(char *buf, size_t len) |
274a4a44 | 2546 | { |
d62a17ae | 2547 | unsigned int i; |
2548 | struct iovec iov[2]; | |
2549 | char crlf[4] = "\r\n"; | |
9fc7ebf1 | 2550 | |
d62a17ae | 2551 | /* vty may not have been initialised */ |
2552 | if (!vtyvec) | |
2553 | return; | |
d0bfb22c | 2554 | |
d62a17ae | 2555 | iov[0].iov_base = buf; |
2556 | iov[0].iov_len = len; | |
2557 | iov[1].iov_base = crlf; | |
2558 | iov[1].iov_len = 2; | |
274a4a44 | 2559 | |
d62a17ae | 2560 | for (i = 0; i < vector_active(vtyvec); i++) { |
2561 | struct vty *vty; | |
2562 | if (((vty = vector_slot(vtyvec, i)) != NULL) && vty->monitor) | |
2563 | /* N.B. We don't care about the return code, since | |
2564 | process is | |
2565 | most likely just about to die anyway. */ | |
2566 | if (writev(vty->wfd, iov, 2) == -1) { | |
2567 | fprintf(stderr, "Failure to writev: %d\n", | |
2568 | errno); | |
2569 | exit(-1); | |
2570 | } | |
2571 | } | |
274a4a44 | 2572 | } |
2573 | ||
f344c66e | 2574 | int vty_config_enter(struct vty *vty, bool private_config, bool exclusive) |
718e3744 | 2575 | { |
364ad673 RW |
2576 | if (exclusive && nb_running_lock(NB_CLIENT_CLI, vty)) { |
2577 | vty_out(vty, "%% Configuration is locked by other client\n"); | |
f344c66e | 2578 | return CMD_WARNING; |
d62a17ae | 2579 | } |
f344c66e RW |
2580 | |
2581 | vty->node = CONFIG_NODE; | |
2582 | vty->config = true; | |
2583 | vty->private_config = private_config; | |
41e195d4 | 2584 | vty->xpath_index = 0; |
f344c66e | 2585 | |
8685be73 RW |
2586 | if (private_config) { |
2587 | vty->candidate_config = nb_config_dup(running_config); | |
2588 | vty->candidate_config_base = nb_config_dup(running_config); | |
2589 | vty_out(vty, | |
2590 | "Warning: uncommitted changes will be discarded on exit.\n\n"); | |
2591 | } else { | |
2592 | vty->candidate_config = vty_shared_candidate_config; | |
2593 | if (frr_get_cli_mode() == FRR_CLI_TRANSACTIONAL) | |
f344c66e RW |
2594 | vty->candidate_config_base = |
2595 | nb_config_dup(running_config); | |
2596 | } | |
2597 | ||
2598 | return CMD_SUCCESS; | |
718e3744 | 2599 | } |
2600 | ||
f344c66e | 2601 | void vty_config_exit(struct vty *vty) |
718e3744 | 2602 | { |
24389580 DL |
2603 | enum node_type node = vty->node; |
2604 | struct cmd_node *cnode; | |
2605 | ||
2606 | /* unlock and jump up to ENABLE_NODE if -and only if- we're | |
2607 | * somewhere below CONFIG_NODE */ | |
2608 | while (node && node != CONFIG_NODE) { | |
2609 | cnode = vector_lookup(cmdvec, node); | |
2610 | node = cnode->parent_node; | |
2611 | } | |
791ded4a DL |
2612 | if (node != CONFIG_NODE) |
2613 | /* called outside config, e.g. vty_close() in ENABLE_NODE */ | |
24389580 | 2614 | return; |
24389580 DL |
2615 | |
2616 | while (vty->node != ENABLE_NODE) | |
791ded4a | 2617 | /* will call vty_config_node_exit() below */ |
24389580 | 2618 | cmd_exit(vty); |
791ded4a DL |
2619 | } |
2620 | ||
2621 | int vty_config_node_exit(struct vty *vty) | |
2622 | { | |
2623 | vty->xpath_index = 0; | |
24389580 | 2624 | |
b855e95f RW |
2625 | /* Perform pending commit if any. */ |
2626 | nb_cli_pending_commit_check(vty); | |
2627 | ||
fbdc1c0a RW |
2628 | /* Check if there's a pending confirmed commit. */ |
2629 | if (vty->t_confirmed_commit_timeout) { | |
2630 | vty_out(vty, | |
2631 | "WARNING: exiting with a pending confirmed commit. Rolling back to previous configuration.\n\n"); | |
2632 | nb_cli_confirmed_commit_rollback(vty); | |
2633 | nb_cli_confirmed_commit_clean(vty); | |
2634 | } | |
2635 | ||
364ad673 | 2636 | (void)nb_running_unlock(NB_CLIENT_CLI, vty); |
1c2facd1 RW |
2637 | |
2638 | if (vty->candidate_config) { | |
2639 | if (vty->private_config) | |
2640 | nb_config_free(vty->candidate_config); | |
2641 | vty->candidate_config = NULL; | |
2642 | } | |
2643 | if (vty->candidate_config_base) { | |
2644 | nb_config_free(vty->candidate_config_base); | |
2645 | vty->candidate_config_base = NULL; | |
2646 | } | |
cf09d3ca RW |
2647 | |
2648 | vty->config = false; | |
791ded4a | 2649 | return 1; |
cc933ef9 DL |
2650 | } |
2651 | ||
718e3744 | 2652 | /* Master of the threads. */ |
79159516 | 2653 | static struct thread_master *vty_master; |
718e3744 | 2654 | |
d62a17ae | 2655 | static void vty_event(enum event event, int sock, struct vty *vty) |
718e3744 | 2656 | { |
d62a17ae | 2657 | struct thread *vty_serv_thread = NULL; |
d8182598 | 2658 | |
d62a17ae | 2659 | switch (event) { |
2660 | case VTY_SERV: | |
2661 | vty_serv_thread = thread_add_read(vty_master, vty_accept, vty, | |
2662 | sock, NULL); | |
2663 | vector_set_index(Vvty_serv_thread, sock, vty_serv_thread); | |
2664 | break; | |
718e3744 | 2665 | #ifdef VTYSH |
d62a17ae | 2666 | case VTYSH_SERV: |
2667 | vty_serv_thread = thread_add_read(vty_master, vtysh_accept, vty, | |
2668 | sock, NULL); | |
2669 | vector_set_index(Vvty_serv_thread, sock, vty_serv_thread); | |
2670 | break; | |
2671 | case VTYSH_READ: | |
d62a17ae | 2672 | thread_add_read(vty_master, vtysh_read, vty, sock, |
2673 | &vty->t_read); | |
2674 | break; | |
2675 | case VTYSH_WRITE: | |
d62a17ae | 2676 | thread_add_write(vty_master, vtysh_write, vty, sock, |
2677 | &vty->t_write); | |
2678 | break; | |
718e3744 | 2679 | #endif /* VTYSH */ |
d62a17ae | 2680 | case VTY_READ: |
d62a17ae | 2681 | thread_add_read(vty_master, vty_read, vty, sock, &vty->t_read); |
2682 | ||
2683 | /* Time out treatment. */ | |
2684 | if (vty->v_timeout) { | |
43b8ca99 | 2685 | THREAD_OFF(vty->t_timeout); |
d62a17ae | 2686 | thread_add_timer(vty_master, vty_timeout, vty, |
2687 | vty->v_timeout, &vty->t_timeout); | |
2688 | } | |
2689 | break; | |
2690 | case VTY_WRITE: | |
2691 | thread_add_write(vty_master, vty_flush, vty, sock, | |
2692 | &vty->t_write); | |
2693 | break; | |
2694 | case VTY_TIMEOUT_RESET: | |
43b8ca99 DS |
2695 | THREAD_OFF(vty->t_timeout); |
2696 | if (vty->v_timeout) | |
d62a17ae | 2697 | thread_add_timer(vty_master, vty_timeout, vty, |
2698 | vty->v_timeout, &vty->t_timeout); | |
d62a17ae | 2699 | break; |
2700 | } | |
718e3744 | 2701 | } |
6b0655a2 | 2702 | |
505e5056 | 2703 | DEFUN_NOSH (config_who, |
718e3744 | 2704 | config_who_cmd, |
2705 | "who", | |
2706 | "Display who is on vty\n") | |
2707 | { | |
d62a17ae | 2708 | unsigned int i; |
2709 | struct vty *v; | |
718e3744 | 2710 | |
d62a17ae | 2711 | for (i = 0; i < vector_active(vtyvec); i++) |
2712 | if ((v = vector_slot(vtyvec, i)) != NULL) | |
2713 | vty_out(vty, "%svty[%d] connected from %s.\n", | |
2714 | v->config ? "*" : " ", i, v->address); | |
2715 | return CMD_SUCCESS; | |
718e3744 | 2716 | } |
2717 | ||
2718 | /* Move to vty configuration mode. */ | |
505e5056 | 2719 | DEFUN_NOSH (line_vty, |
718e3744 | 2720 | line_vty_cmd, |
2721 | "line vty", | |
2722 | "Configure a terminal line\n" | |
2723 | "Virtual terminal\n") | |
2724 | { | |
d62a17ae | 2725 | vty->node = VTY_NODE; |
2726 | return CMD_SUCCESS; | |
718e3744 | 2727 | } |
2728 | ||
2729 | /* Set time out value. */ | |
d62a17ae | 2730 | static int exec_timeout(struct vty *vty, const char *min_str, |
2731 | const char *sec_str) | |
718e3744 | 2732 | { |
d62a17ae | 2733 | unsigned long timeout = 0; |
718e3744 | 2734 | |
d62a17ae | 2735 | /* min_str and sec_str are already checked by parser. So it must be |
2736 | all digit string. */ | |
2737 | if (min_str) { | |
2738 | timeout = strtol(min_str, NULL, 10); | |
2739 | timeout *= 60; | |
2740 | } | |
2741 | if (sec_str) | |
2742 | timeout += strtol(sec_str, NULL, 10); | |
718e3744 | 2743 | |
d62a17ae | 2744 | vty_timeout_val = timeout; |
2745 | vty->v_timeout = timeout; | |
2746 | vty_event(VTY_TIMEOUT_RESET, 0, vty); | |
718e3744 | 2747 | |
2748 | ||
d62a17ae | 2749 | return CMD_SUCCESS; |
718e3744 | 2750 | } |
2751 | ||
2752 | DEFUN (exec_timeout_min, | |
2753 | exec_timeout_min_cmd, | |
aa1c90a4 | 2754 | "exec-timeout (0-35791)", |
718e3744 | 2755 | "Set timeout value\n" |
2756 | "Timeout value in minutes\n") | |
2757 | { | |
d62a17ae | 2758 | int idx_number = 1; |
2759 | return exec_timeout(vty, argv[idx_number]->arg, NULL); | |
718e3744 | 2760 | } |
2761 | ||
2762 | DEFUN (exec_timeout_sec, | |
2763 | exec_timeout_sec_cmd, | |
aa1c90a4 | 2764 | "exec-timeout (0-35791) (0-2147483)", |
718e3744 | 2765 | "Set the EXEC timeout\n" |
2766 | "Timeout in minutes\n" | |
2767 | "Timeout in seconds\n") | |
2768 | { | |
d62a17ae | 2769 | int idx_number = 1; |
2770 | int idx_number_2 = 2; | |
2771 | return exec_timeout(vty, argv[idx_number]->arg, | |
2772 | argv[idx_number_2]->arg); | |
718e3744 | 2773 | } |
2774 | ||
2775 | DEFUN (no_exec_timeout, | |
2776 | no_exec_timeout_cmd, | |
2777 | "no exec-timeout", | |
2778 | NO_STR | |
2779 | "Set the EXEC timeout\n") | |
2780 | { | |
d62a17ae | 2781 | return exec_timeout(vty, NULL, NULL); |
718e3744 | 2782 | } |
2783 | ||
2784 | /* Set vty access class. */ | |
2785 | DEFUN (vty_access_class, | |
2786 | vty_access_class_cmd, | |
2787 | "access-class WORD", | |
2788 | "Filter connections based on an IP access list\n" | |
2789 | "IP access list\n") | |
2790 | { | |
d62a17ae | 2791 | int idx_word = 1; |
2792 | if (vty_accesslist_name) | |
2793 | XFREE(MTYPE_VTY, vty_accesslist_name); | |
718e3744 | 2794 | |
d62a17ae | 2795 | vty_accesslist_name = XSTRDUP(MTYPE_VTY, argv[idx_word]->arg); |
718e3744 | 2796 | |
d62a17ae | 2797 | return CMD_SUCCESS; |
718e3744 | 2798 | } |
2799 | ||
2800 | /* Clear vty access class. */ | |
2801 | DEFUN (no_vty_access_class, | |
2802 | no_vty_access_class_cmd, | |
2803 | "no access-class [WORD]", | |
2804 | NO_STR | |
2805 | "Filter connections based on an IP access list\n" | |
2806 | "IP access list\n") | |
2807 | { | |
d62a17ae | 2808 | int idx_word = 2; |
2809 | const char *accesslist = (argc == 3) ? argv[idx_word]->arg : NULL; | |
2810 | if (!vty_accesslist_name | |
2811 | || (argc == 3 && strcmp(vty_accesslist_name, accesslist))) { | |
2812 | vty_out(vty, "Access-class is not currently applied to vty\n"); | |
2813 | return CMD_WARNING_CONFIG_FAILED; | |
2814 | } | |
718e3744 | 2815 | |
d62a17ae | 2816 | XFREE(MTYPE_VTY, vty_accesslist_name); |
718e3744 | 2817 | |
d62a17ae | 2818 | vty_accesslist_name = NULL; |
718e3744 | 2819 | |
d62a17ae | 2820 | return CMD_SUCCESS; |
718e3744 | 2821 | } |
2822 | ||
718e3744 | 2823 | /* Set vty access class. */ |
2824 | DEFUN (vty_ipv6_access_class, | |
2825 | vty_ipv6_access_class_cmd, | |
2826 | "ipv6 access-class WORD", | |
2827 | IPV6_STR | |
2828 | "Filter connections based on an IP access list\n" | |
2829 | "IPv6 access list\n") | |
2830 | { | |
d62a17ae | 2831 | int idx_word = 2; |
2832 | if (vty_ipv6_accesslist_name) | |
2833 | XFREE(MTYPE_VTY, vty_ipv6_accesslist_name); | |
718e3744 | 2834 | |
d62a17ae | 2835 | vty_ipv6_accesslist_name = XSTRDUP(MTYPE_VTY, argv[idx_word]->arg); |
718e3744 | 2836 | |
d62a17ae | 2837 | return CMD_SUCCESS; |
718e3744 | 2838 | } |
2839 | ||
2840 | /* Clear vty access class. */ | |
2841 | DEFUN (no_vty_ipv6_access_class, | |
2842 | no_vty_ipv6_access_class_cmd, | |
2843 | "no ipv6 access-class [WORD]", | |
2844 | NO_STR | |
2845 | IPV6_STR | |
2846 | "Filter connections based on an IP access list\n" | |
2847 | "IPv6 access list\n") | |
2848 | { | |
d62a17ae | 2849 | int idx_word = 3; |
2850 | const char *accesslist = (argc == 4) ? argv[idx_word]->arg : NULL; | |
aa1c90a4 | 2851 | |
d62a17ae | 2852 | if (!vty_ipv6_accesslist_name |
2853 | || (argc == 4 && strcmp(vty_ipv6_accesslist_name, accesslist))) { | |
2854 | vty_out(vty, | |
2855 | "IPv6 access-class is not currently applied to vty\n"); | |
2856 | return CMD_WARNING_CONFIG_FAILED; | |
2857 | } | |
718e3744 | 2858 | |
d62a17ae | 2859 | XFREE(MTYPE_VTY, vty_ipv6_accesslist_name); |
718e3744 | 2860 | |
d62a17ae | 2861 | vty_ipv6_accesslist_name = NULL; |
718e3744 | 2862 | |
d62a17ae | 2863 | return CMD_SUCCESS; |
718e3744 | 2864 | } |
718e3744 | 2865 | |
2866 | /* vty login. */ | |
2867 | DEFUN (vty_login, | |
2868 | vty_login_cmd, | |
2869 | "login", | |
2870 | "Enable password checking\n") | |
2871 | { | |
d62a17ae | 2872 | no_password_check = 0; |
2873 | return CMD_SUCCESS; | |
718e3744 | 2874 | } |
2875 | ||
2876 | DEFUN (no_vty_login, | |
2877 | no_vty_login_cmd, | |
2878 | "no login", | |
2879 | NO_STR | |
2880 | "Enable password checking\n") | |
2881 | { | |
d62a17ae | 2882 | no_password_check = 1; |
2883 | return CMD_SUCCESS; | |
718e3744 | 2884 | } |
2885 | ||
2886 | DEFUN (service_advanced_vty, | |
2887 | service_advanced_vty_cmd, | |
2888 | "service advanced-vty", | |
2889 | "Set up miscellaneous service\n" | |
2890 | "Enable advanced mode vty interface\n") | |
2891 | { | |
d62a17ae | 2892 | host.advanced = 1; |
2893 | return CMD_SUCCESS; | |
718e3744 | 2894 | } |
2895 | ||
2896 | DEFUN (no_service_advanced_vty, | |
2897 | no_service_advanced_vty_cmd, | |
2898 | "no service advanced-vty", | |
2899 | NO_STR | |
2900 | "Set up miscellaneous service\n" | |
2901 | "Enable advanced mode vty interface\n") | |
2902 | { | |
d62a17ae | 2903 | host.advanced = 0; |
2904 | return CMD_SUCCESS; | |
718e3744 | 2905 | } |
2906 | ||
505e5056 | 2907 | DEFUN_NOSH (terminal_monitor, |
718e3744 | 2908 | terminal_monitor_cmd, |
2909 | "terminal monitor", | |
2910 | "Set terminal line parameters\n" | |
2911 | "Copy debug output to the current terminal line\n") | |
2912 | { | |
d62a17ae | 2913 | vty->monitor = 1; |
2914 | return CMD_SUCCESS; | |
718e3744 | 2915 | } |
2916 | ||
505e5056 | 2917 | DEFUN_NOSH (terminal_no_monitor, |
718e3744 | 2918 | terminal_no_monitor_cmd, |
2919 | "terminal no monitor", | |
2920 | "Set terminal line parameters\n" | |
2921 | NO_STR | |
2922 | "Copy debug output to the current terminal line\n") | |
2923 | { | |
d62a17ae | 2924 | vty->monitor = 0; |
2925 | return CMD_SUCCESS; | |
718e3744 | 2926 | } |
2927 | ||
505e5056 | 2928 | DEFUN_NOSH (no_terminal_monitor, |
789f78ac | 2929 | no_terminal_monitor_cmd, |
2930 | "no terminal monitor", | |
2931 | NO_STR | |
2932 | "Set terminal line parameters\n" | |
2933 | "Copy debug output to the current terminal line\n") | |
f667a580 | 2934 | { |
d62a17ae | 2935 | return terminal_no_monitor(self, vty, argc, argv); |
f667a580 QY |
2936 | } |
2937 | ||
789f78ac | 2938 | |
505e5056 | 2939 | DEFUN_NOSH (show_history, |
718e3744 | 2940 | show_history_cmd, |
2941 | "show history", | |
2942 | SHOW_STR | |
2943 | "Display the session command history\n") | |
2944 | { | |
d62a17ae | 2945 | int index; |
718e3744 | 2946 | |
d62a17ae | 2947 | for (index = vty->hindex + 1; index != vty->hindex;) { |
2948 | if (index == VTY_MAXHIST) { | |
2949 | index = 0; | |
2950 | continue; | |
2951 | } | |
718e3744 | 2952 | |
d62a17ae | 2953 | if (vty->hist[index] != NULL) |
2954 | vty_out(vty, " %s\n", vty->hist[index]); | |
718e3744 | 2955 | |
d62a17ae | 2956 | index++; |
2957 | } | |
718e3744 | 2958 | |
d62a17ae | 2959 | return CMD_SUCCESS; |
718e3744 | 2960 | } |
2961 | ||
da688ecd | 2962 | /* vty login. */ |
2950f5da | 2963 | DEFPY (log_commands, |
da688ecd | 2964 | log_commands_cmd, |
2950f5da DS |
2965 | "[no] log commands", |
2966 | NO_STR | |
da688ecd | 2967 | "Logging control\n" |
2950f5da | 2968 | "Log all commands\n") |
da688ecd | 2969 | { |
2950f5da DS |
2970 | if (no) { |
2971 | if (do_log_commands_perm) { | |
2972 | vty_out(vty, | |
2973 | "Daemon started with permanent logging turned on for commands, ignoring\n"); | |
2974 | return CMD_WARNING; | |
2975 | } | |
2976 | ||
2977 | do_log_commands = false; | |
2978 | } else | |
2979 | do_log_commands = true; | |
2980 | ||
d62a17ae | 2981 | return CMD_SUCCESS; |
da688ecd LB |
2982 | } |
2983 | ||
718e3744 | 2984 | /* Display current configuration. */ |
d62a17ae | 2985 | static int vty_config_write(struct vty *vty) |
718e3744 | 2986 | { |
d62a17ae | 2987 | vty_out(vty, "line vty\n"); |
718e3744 | 2988 | |
d62a17ae | 2989 | if (vty_accesslist_name) |
2990 | vty_out(vty, " access-class %s\n", vty_accesslist_name); | |
718e3744 | 2991 | |
d62a17ae | 2992 | if (vty_ipv6_accesslist_name) |
2993 | vty_out(vty, " ipv6 access-class %s\n", | |
2994 | vty_ipv6_accesslist_name); | |
718e3744 | 2995 | |
d62a17ae | 2996 | /* exec-timeout */ |
2997 | if (vty_timeout_val != VTY_TIMEOUT_DEFAULT) | |
2998 | vty_out(vty, " exec-timeout %ld %ld\n", vty_timeout_val / 60, | |
2999 | vty_timeout_val % 60); | |
718e3744 | 3000 | |
d62a17ae | 3001 | /* login */ |
3002 | if (no_password_check) | |
3003 | vty_out(vty, " no login\n"); | |
da688ecd | 3004 | |
d62a17ae | 3005 | if (do_log_commands) |
3006 | vty_out(vty, "log commands\n"); | |
d0bfb22c | 3007 | |
d62a17ae | 3008 | vty_out(vty, "!\n"); |
718e3744 | 3009 | |
d62a17ae | 3010 | return CMD_SUCCESS; |
718e3744 | 3011 | } |
3012 | ||
612c2c15 | 3013 | static int vty_config_write(struct vty *vty); |
d62a17ae | 3014 | struct cmd_node vty_node = { |
f4b8291f | 3015 | .name = "vty", |
62b346ee | 3016 | .node = VTY_NODE, |
24389580 | 3017 | .parent_node = CONFIG_NODE, |
62b346ee | 3018 | .prompt = "%s(config-line)# ", |
612c2c15 | 3019 | .config_write = vty_config_write, |
718e3744 | 3020 | }; |
3021 | ||
3022 | /* Reset all VTY status. */ | |
4d762f26 | 3023 | void vty_reset(void) |
d62a17ae | 3024 | { |
3025 | unsigned int i; | |
3026 | struct vty *vty; | |
3027 | struct thread *vty_serv_thread; | |
3028 | ||
3029 | for (i = 0; i < vector_active(vtyvec); i++) | |
3030 | if ((vty = vector_slot(vtyvec, i)) != NULL) { | |
0b42d81a | 3031 | buffer_reset(vty->lbuf); |
d62a17ae | 3032 | buffer_reset(vty->obuf); |
3033 | vty->status = VTY_CLOSE; | |
3034 | vty_close(vty); | |
3035 | } | |
3036 | ||
3037 | for (i = 0; i < vector_active(Vvty_serv_thread); i++) | |
3038 | if ((vty_serv_thread = vector_slot(Vvty_serv_thread, i)) | |
3039 | != NULL) { | |
43b8ca99 | 3040 | THREAD_OFF(vty_serv_thread); |
d62a17ae | 3041 | vector_slot(Vvty_serv_thread, i) = NULL; |
3042 | close(i); | |
3043 | } | |
3044 | ||
3045 | vty_timeout_val = VTY_TIMEOUT_DEFAULT; | |
3046 | ||
e1b36e13 QY |
3047 | XFREE(MTYPE_VTY, vty_accesslist_name); |
3048 | XFREE(MTYPE_VTY, vty_ipv6_accesslist_name); | |
718e3744 | 3049 | } |
3050 | ||
d62a17ae | 3051 | static void vty_save_cwd(void) |
718e3744 | 3052 | { |
d62a17ae | 3053 | char *c; |
79ad2798 | 3054 | |
daeb97e9 | 3055 | c = getcwd(vty_cwd, sizeof(vty_cwd)); |
718e3744 | 3056 | |
d62a17ae | 3057 | if (!c) { |
3058 | /* | |
3059 | * At this point if these go wrong, more than likely | |
3060 | * the whole world is coming down around us | |
3061 | * Hence not worrying about it too much. | |
3062 | */ | |
3063 | if (!chdir(SYSCONFDIR)) { | |
450971aa | 3064 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 QY |
3065 | "Failure to chdir to %s, errno: %d", |
3066 | SYSCONFDIR, errno); | |
d62a17ae | 3067 | exit(-1); |
3068 | } | |
daeb97e9 | 3069 | if (getcwd(vty_cwd, sizeof(vty_cwd)) == NULL) { |
450971aa | 3070 | flog_err_sys(EC_LIB_SYSTEM_CALL, |
09c866e3 | 3071 | "Failure to getcwd, errno: %d", errno); |
d62a17ae | 3072 | exit(-1); |
3073 | } | |
3074 | } | |
718e3744 | 3075 | } |
3076 | ||
4d762f26 | 3077 | char *vty_get_cwd(void) |
718e3744 | 3078 | { |
d62a17ae | 3079 | return vty_cwd; |
718e3744 | 3080 | } |
3081 | ||
d62a17ae | 3082 | int vty_shell(struct vty *vty) |
718e3744 | 3083 | { |
d62a17ae | 3084 | return vty->type == VTY_SHELL ? 1 : 0; |
718e3744 | 3085 | } |
3086 | ||
d62a17ae | 3087 | int vty_shell_serv(struct vty *vty) |
718e3744 | 3088 | { |
d62a17ae | 3089 | return vty->type == VTY_SHELL_SERV ? 1 : 0; |
718e3744 | 3090 | } |
3091 | ||
4d762f26 | 3092 | void vty_init_vtysh(void) |
718e3744 | 3093 | { |
d62a17ae | 3094 | vtyvec = vector_init(VECTOR_MIN_SIZE); |
718e3744 | 3095 | } |
3096 | ||
3097 | /* Install vty's own commands like `who' command. */ | |
2950f5da | 3098 | void vty_init(struct thread_master *master_thread, bool do_command_logging) |
d62a17ae | 3099 | { |
3100 | /* For further configuration read, preserve current directory. */ | |
3101 | vty_save_cwd(); | |
3102 | ||
3103 | vtyvec = vector_init(VECTOR_MIN_SIZE); | |
3104 | ||
3105 | vty_master = master_thread; | |
3106 | ||
154b9e8f | 3107 | atexit(vty_stdio_atexit); |
d62a17ae | 3108 | |
3109 | /* Initilize server thread vector. */ | |
3110 | Vvty_serv_thread = vector_init(VECTOR_MIN_SIZE); | |
3111 | ||
3112 | /* Install bgp top node. */ | |
612c2c15 | 3113 | install_node(&vty_node); |
d62a17ae | 3114 | |
3115 | install_element(VIEW_NODE, &config_who_cmd); | |
3116 | install_element(VIEW_NODE, &show_history_cmd); | |
3117 | install_element(CONFIG_NODE, &line_vty_cmd); | |
3118 | install_element(CONFIG_NODE, &service_advanced_vty_cmd); | |
3119 | install_element(CONFIG_NODE, &no_service_advanced_vty_cmd); | |
3120 | install_element(CONFIG_NODE, &show_history_cmd); | |
3121 | install_element(CONFIG_NODE, &log_commands_cmd); | |
2950f5da DS |
3122 | |
3123 | if (do_command_logging) { | |
3124 | do_log_commands = true; | |
3125 | do_log_commands_perm = true; | |
3126 | } | |
3127 | ||
d62a17ae | 3128 | install_element(ENABLE_NODE, &terminal_monitor_cmd); |
3129 | install_element(ENABLE_NODE, &terminal_no_monitor_cmd); | |
3130 | install_element(ENABLE_NODE, &no_terminal_monitor_cmd); | |
3131 | ||
3132 | install_default(VTY_NODE); | |
3133 | install_element(VTY_NODE, &exec_timeout_min_cmd); | |
3134 | install_element(VTY_NODE, &exec_timeout_sec_cmd); | |
3135 | install_element(VTY_NODE, &no_exec_timeout_cmd); | |
3136 | install_element(VTY_NODE, &vty_access_class_cmd); | |
3137 | install_element(VTY_NODE, &no_vty_access_class_cmd); | |
3138 | install_element(VTY_NODE, &vty_login_cmd); | |
3139 | install_element(VTY_NODE, &no_vty_login_cmd); | |
3140 | install_element(VTY_NODE, &vty_ipv6_access_class_cmd); | |
3141 | install_element(VTY_NODE, &no_vty_ipv6_access_class_cmd); | |
3142 | } | |
3143 | ||
3144 | void vty_terminate(void) | |
3145 | { | |
daeb97e9 | 3146 | memset(vty_cwd, 0x00, sizeof(vty_cwd)); |
d62a17ae | 3147 | |
3148 | if (vtyvec && Vvty_serv_thread) { | |
3149 | vty_reset(); | |
3150 | vector_free(vtyvec); | |
3151 | vector_free(Vvty_serv_thread); | |
3152 | vtyvec = NULL; | |
3153 | Vvty_serv_thread = NULL; | |
3154 | } | |
228da428 | 3155 | } |