2 * Zebra configuration command interface routine
3 * Copyright (C) 1997, 98 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation; either version 2, or (at your
10 * option) any later version.
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Zebra; see the file COPYING. If not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 * Boston, MA 02111-1307, USA.
23 #ifndef _ZEBRA_COMMAND_H
24 #define _ZEBRA_COMMAND_H
28 #include "lib/route_types.h"
31 /* Host configuration variable */
34 /* Host name of this router. */
37 /* Password for vty interface. */
39 char *password_encrypt;
45 /* System wide terminal lines. */
51 /* config file name of this host */
54 /* Flags for services */
58 /* Banner configuration. */
63 /* There are some command levels which called from command node. */
66 AUTH_NODE, /* Authentication mode of vty interface. */
67 RESTRICTED_NODE, /* Restricted view mode */
68 VIEW_NODE, /* View node. Default mode of vty interface. */
69 AUTH_ENABLE_NODE, /* Authentication mode for change enable. */
70 ENABLE_NODE, /* Enable node. */
71 CONFIG_NODE, /* Config node. Default mode of config file. */
72 VRF_NODE, /* VRF node. */
73 SERVICE_NODE, /* Service node. */
74 DEBUG_NODE, /* Debug node. */
75 AAA_NODE, /* AAA node. */
76 KEYCHAIN_NODE, /* Key-chain node. */
77 KEYCHAIN_KEY_NODE, /* Key-chain key node. */
78 INTERFACE_NODE, /* Interface mode node. */
79 ZEBRA_NODE, /* zebra connection node. */
80 TABLE_NODE, /* rtm_table selection node. */
81 RIP_NODE, /* RIP protocol mode node. */
82 RIPNG_NODE, /* RIPng protocol mode node. */
83 BABEL_NODE, /* Babel protocol mode node. */
84 BGP_NODE, /* BGP protocol mode which includes BGP4+ */
85 BGP_VPNV4_NODE, /* BGP MPLS-VPN PE exchange. */
86 BGP_VPNV6_NODE, /* BGP MPLS-VPN PE exchange. */
87 BGP_IPV4_NODE, /* BGP IPv4 unicast address family. */
88 BGP_IPV4M_NODE, /* BGP IPv4 multicast address family. */
89 BGP_IPV6_NODE, /* BGP IPv6 address family */
90 BGP_IPV6M_NODE, /* BGP IPv6 multicast address family. */
91 BGP_ENCAP_NODE, /* BGP ENCAP SAFI */
92 BGP_ENCAPV6_NODE, /* BGP ENCAP SAFI */
93 OSPF_NODE, /* OSPF protocol mode */
94 OSPF6_NODE, /* OSPF protocol for IPv6 mode */
95 ISIS_NODE, /* ISIS protocol mode */
96 PIM_NODE, /* PIM protocol mode */
97 MASC_NODE, /* MASC for multicast. */
98 IRDP_NODE, /* ICMP Router Discovery Protocol mode. */
99 IP_NODE, /* Static ip route node. */
100 ACCESS_NODE, /* Access list node. */
101 PREFIX_NODE, /* Prefix list node. */
102 ACCESS_IPV6_NODE, /* Access list node. */
103 PREFIX_IPV6_NODE, /* Prefix list node. */
104 AS_LIST_NODE, /* AS list node. */
105 COMMUNITY_LIST_NODE, /* Community list node. */
106 RMAP_NODE, /* Route map node. */
107 SMUX_NODE, /* SNMP configuration node. */
108 DUMP_NODE, /* Packet dump node. */
109 FORWARDING_NODE, /* IP forwarding node. */
110 PROTOCOL_NODE, /* protocol filtering node */
111 VTY_NODE, /* Vty node. */
112 LINK_PARAMS_NODE, /* Link-parameters node */
113 ZEBRA_IF_DEFAULTS_NODE, /* If defaults dummy node */
116 /* Node which has some commands and prompt string and configuration
117 function pointer . */
123 /* Prompt character at vty interface. */
126 /* Is this node's configuration goes to vtysh ? */
129 /* Node's configuration write function */
130 int (*func) (struct vty *);
132 /* Vector of this node's command list. */
135 /* Hashed index of command node list, for de-dupping primarily */
136 struct hash *cmd_hash;
141 CMD_ATTR_DEPRECATED = 1,
145 /* Structure of command element. */
148 const char *string; /* Command specification by string. */
149 int (*func) (struct cmd_element *, struct vty *, int, const char *[]);
150 const char *doc; /* Documentation of this command. */
151 int daemon; /* Daemon to which this command belong. */
152 vector tokens; /* Vector of cmd_tokens */
153 u_char attr; /* Command attributes */
164 enum cmd_terminal_type
173 TERMINAL_IPV4_PREFIX,
175 TERMINAL_IPV6_PREFIX,
178 /* argument to be recorded on argv[] if it's not a literal */
179 #define TERMINAL_RECORD(t) ((t) >= TERMINAL_OPTION)
181 /* Command description structure. */
184 enum cmd_token_type type;
185 enum cmd_terminal_type terminal;
187 /* Used for type == MULTIPLE */
188 vector multiple; /* vector of cmd_token, type == FINAL */
190 /* Used for type == KEYWORD */
191 vector keyword; /* vector of vector of cmd_tokens */
193 /* Used for type == TERMINAL */
194 char *cmd; /* Command string. */
195 char *desc; /* Command's description. */
198 /* Return value of the commands. */
199 #define CMD_SUCCESS 0
200 #define CMD_WARNING 1
201 #define CMD_ERR_NO_MATCH 2
202 #define CMD_ERR_AMBIGUOUS 3
203 #define CMD_ERR_INCOMPLETE 4
204 #define CMD_ERR_EXEED_ARGC_MAX 5
205 #define CMD_ERR_NOTHING_TODO 6
206 #define CMD_COMPLETE_FULL_MATCH 7
207 #define CMD_COMPLETE_MATCH 8
208 #define CMD_COMPLETE_LIST_MATCH 9
209 #define CMD_SUCCESS_DAEMON 10
211 /* Argc max counts. */
212 #define CMD_ARGC_MAX 25
214 /* Turn off these macros when uisng cpp with extract.pl */
215 #ifndef VTYSH_EXTRACT_PL
217 /* helper defines for end-user DEFUN* macros */
218 #define DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attrs, dnum) \
219 struct cmd_element cmdname = \
228 #define DEFUN_CMD_FUNC_DECL(funcname) \
229 static int funcname (struct cmd_element *, struct vty *, int, const char *[]);
231 #define DEFUN_CMD_FUNC_TEXT(funcname) \
232 static int funcname \
233 (struct cmd_element *self __attribute__ ((unused)), \
234 struct vty *vty __attribute__ ((unused)), \
235 int argc __attribute__ ((unused)), \
236 const char *argv[] __attribute__ ((unused)) )
238 /* DEFUN for vty command interafce. Little bit hacky ;-).
240 * DEFUN(funcname, cmdname, cmdstr, helpstr)
245 * Name of the function that will be defined.
250 * Name of the struct that will be defined for the command.
255 * The cmdstr defines the command syntax. It is used by the vty subsystem
256 * and vtysh to perform matching and completion in the cli. So you have to take
257 * care to construct it adhering to the following grammar. The names used
258 * for the production rules losely represent the names used in lib/command.c
260 * cmdstr = cmd_token , { " " , cmd_token } ;
262 * cmd_token = cmd_terminal
266 * cmd_terminal_fixed = fixed_string
274 * cmd_terminal = cmd_terminal_fixed
278 * multiple_part = cmd_terminal_fixed ;
279 * cmd_multiple = "(" , multiple_part , ( "|" | { "|" , multiple_part } ) , ")" ;
281 * keyword_part = fixed_string , { " " , ( cmd_terminal_fixed | cmd_multiple ) } ;
282 * cmd_keyword = "{" , keyword_part , { "|" , keyword_part } , "}" ;
284 * lowercase = "a" | ... | "z" ;
285 * uppercase = "A" | ... | "Z" ;
286 * digit = "0" | ... | "9" ;
287 * number = digit , { digit } ;
289 * fixed_string = (lowercase | digit) , { lowercase | digit | uppercase | "-" | "_" } ;
290 * variable = uppercase , { uppercase | "_" } ;
291 * range = "<" , number , "-" , number , ">" ;
293 * ipv4_prefix = "A.B.C.D/M" ;
294 * ipv6 = "X:X::X:X" ;
295 * ipv6_prefix = "X:X::X:X/M" ;
296 * option = "[" , variable , "]" ;
297 * vararg = "." , variable ;
299 * To put that all in a textual description: A cmdstr is a sequence of tokens,
300 * separated by spaces.
304 * A very simple cmdstring would be something like: "show ip bgp". It consists
305 * of three Terminal Tokens, each containing a fixed string. When this command
306 * is called, no arguments will be passed down to the function implementing it,
307 * as it only consists of fixed strings.
309 * Apart from fixed strings, Terminal Tokens can also contain variables:
310 * An example would be "show ip bgp A.B.C.D". This command expects an IPv4
311 * as argument. As this is a variable, the IP address entered by the user will
312 * be passed down as an argument. Apart from two exceptions, the other options
313 * for Terminal Tokens behave exactly as we just discussed and only make a
314 * difference for the CLI. The two exceptions will be discussed in the next
317 * A Terminal Token can contain a so called option match. This is a simple
318 * string variable that the user may omit. An example would be:
319 * "show interface [IFNAME]". If the user calls this without an interface as
320 * argument, no arguments will be passed down to the function implementing
321 * this command. Otherwise, the interface name will be provided to the function
322 * as a regular argument.
324 * Also, a Terminal Token can contain a so called vararg. This is used e.g. in
325 * "show ip bgp regexp .LINE". The last token is a vararg match and will
326 * consume all the arguments the user inputs on the command line and append
327 * those to the list of arguments passed down to the function implementing this
328 * command. (Therefore, it doesn't make much sense to have any tokens after a
329 * vararg because the vararg will already consume all the words the user entered
334 * The Multiple Token type can be used if there are multiple possibilities what
335 * arguments may be used for a command, but it should map to the same function
336 * nonetheless. An example would be "ip route A.B.C.D/M (reject|blackhole)"
337 * In that case both "reject" and "blackhole" would be acceptable as last
338 * arguments. The words matched by Multiple Tokens are always added to the
339 * argument list, even if they are matched by fixed strings. Such a Multiple
340 * Token can contain almost any type of token that would also be acceptable
341 * for a Terminal Token, the exception are optional variables and varag.
343 * There is one special case that is used in some places of Quagga that should be
344 * pointed out here shortly. An example would be "password (8|) WORD". This
345 * construct is used to have fixed strings communicated as arguments. (The "8"
346 * will be passed down as an argument in this case) It does not mean that
347 * the "8" is optional. Another historic and possibly surprising property of
348 * this construct is that it consumes two parts of helpstr. (Help
349 * strings will be explained later)
353 * There are commands that take a lot of different and possibly optional arguments.
354 * An example from ospf would be the "default-information originate" command. This
355 * command takes a lot of optional arguments that may be provided in any order.
356 * To accomodate such commands, the Keyword Token has been implemented.
357 * Using the keyword token, the "default-information originate" command and all
358 * its possible options can be represented using this single cmdstr:
359 * "default-information originate \
360 * {always|metric <0-16777214>|metric-type (1|2)|route-map WORD}"
362 * Keywords always start with a fixed string and may be followed by arguments.
363 * Except optional variables and vararg, everything is permitted here.
365 * For the special case of a keyword without arguments, either NULL or the
366 * keyword itself will be pushed as an argument, depending on whether the
367 * keyword is present.
368 * For the other keywords, arguments will be only pushed for
369 * variables/Multiple Tokens. If the keyword is not present, the arguments that
370 * would have been pushed will be substituted by NULL.
373 * "default information originate metric-type 1 metric 1000"
374 * would yield the following arguments:
375 * { NULL, "1000", "1", NULL }
377 * "default information originate always route-map RMAP-DEFAULT"
378 * would yield the following arguments:
379 * { "always", NULL, NULL, "RMAP-DEFAULT" }
384 * The helpstr is used to show a short explantion for the commands that
385 * are available when the user presses '?' on the CLI. It is the concatenation
386 * of the helpstrings for all the tokens that make up the command.
388 * There should be one helpstring for each token in the cmdstr except those
389 * containing other tokens, like Multiple or Keyword Tokens. For those, there
390 * will only be the helpstrings of the contained tokens.
392 * The individual helpstrings are expected to be in the same order as their
393 * respective Tokens appear in the cmdstr. They should each be terminated with
394 * a linefeed. The last helpstring should be terminated with a linefeed as well.
396 * Care should also be taken to avoid having similar tokens with different
397 * helpstrings. Imagine e.g. the commands "show ip ospf" and "show ip bgp".
398 * they both contain a helpstring for "show", but only one will be displayed
399 * when the user enters "sh?". If those two helpstrings differ, it is not
400 * defined which one will be shown and the behavior is therefore unpredictable.
402 #define DEFUN(funcname, cmdname, cmdstr, helpstr) \
403 DEFUN_CMD_FUNC_DECL(funcname) \
404 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0) \
405 DEFUN_CMD_FUNC_TEXT(funcname)
407 #define DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \
408 DEFUN_CMD_FUNC_DECL(funcname) \
409 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0) \
410 DEFUN_CMD_FUNC_TEXT(funcname)
412 #define DEFUN_HIDDEN(funcname, cmdname, cmdstr, helpstr) \
413 DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
415 #define DEFUN_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \
416 DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED) \
418 /* DEFUN_NOSH for commands that vtysh should ignore */
419 #define DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr) \
420 DEFUN(funcname, cmdname, cmdstr, helpstr)
422 /* DEFSH for vtysh. */
423 #define DEFSH(daemon, cmdname, cmdstr, helpstr) \
424 DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, 0, daemon) \
427 #define DEFUNSH(daemon, funcname, cmdname, cmdstr, helpstr) \
428 DEFUN_CMD_FUNC_DECL(funcname) \
429 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon) \
430 DEFUN_CMD_FUNC_TEXT(funcname)
432 /* DEFUN + DEFSH with attributes */
433 #define DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, attr) \
434 DEFUN_CMD_FUNC_DECL(funcname) \
435 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, daemon) \
436 DEFUN_CMD_FUNC_TEXT(funcname)
438 #define DEFUNSH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \
439 DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
441 #define DEFUNSH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \
442 DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED)
444 /* ALIAS macro which define existing command's alias. */
445 #define ALIAS(funcname, cmdname, cmdstr, helpstr) \
446 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0)
448 #define ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \
449 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)
451 #define ALIAS_HIDDEN(funcname, cmdname, cmdstr, helpstr) \
452 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, 0)
454 #define ALIAS_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \
455 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, 0)
457 #define ALIAS_SH(daemon, funcname, cmdname, cmdstr, helpstr) \
458 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon)
460 #define ALIAS_SH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \
461 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, daemon)
463 #define ALIAS_SH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \
464 DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, daemon)
466 #endif /* VTYSH_EXTRACT_PL */
469 * Sometimes #defines create maximum values that
470 * need to have strings created from them that
471 * allow the parser to match against them.
472 * These macros allow that.
474 #define CMD_CREATE_STR(s) CMD_CREATE_STR_HELPER(s)
475 #define CMD_CREATE_STR_HELPER(s) #s
476 #define CMD_RANGE_STR(a,s) "<" CMD_CREATE_STR(a) "-" CMD_CREATE_STR(s) ">"
479 /* Common descriptions. */
480 #define SHOW_STR "Show running system information\n"
481 #define IP_STR "IP information\n"
482 #define IPV6_STR "IPv6 information\n"
483 #define NO_STR "Negate a command or set its defaults\n"
484 #define REDIST_STR "Redistribute information from another routing protocol\n"
485 #define CLEAR_STR "Reset functions\n"
486 #define RIP_STR "RIP information\n"
487 #define BGP_STR "BGP information\n"
488 #define BGP_SOFT_STR "Soft reconfig inbound and outbound updates\n"
489 #define BGP_SOFT_IN_STR "Send route-refresh unless using 'soft-reconfiguration inbound'\n"
490 #define BGP_SOFT_OUT_STR "Resend all outbound updates\n"
491 #define BGP_SOFT_RSCLIENT_RIB_STR "Soft reconfig for rsclient RIB\n"
492 #define OSPF_STR "OSPF information\n"
493 #define NEIGHBOR_STR "Specify neighbor router\n"
494 #define DEBUG_STR "Debugging functions (see also 'undebug')\n"
495 #define UNDEBUG_STR "Disable debugging functions (see also 'debug')\n"
496 #define ROUTER_STR "Enable a routing process\n"
497 #define AS_STR "AS number\n"
498 #define MBGP_STR "MBGP information\n"
499 #define MATCH_STR "Match values from routing table\n"
500 #define SET_STR "Set values in destination routing protocol\n"
501 #define OUT_STR "Filter outgoing routing updates\n"
502 #define IN_STR "Filter incoming routing updates\n"
503 #define V4NOTATION_STR "specify by IPv4 address notation(e.g. 0.0.0.0)\n"
504 #define OSPF6_NUMBER_STR "Specify by number\n"
505 #define INTERFACE_STR "Interface information\n"
506 #define IFNAME_STR "Interface name(e.g. ep0)\n"
507 #define IP6_STR "IPv6 Information\n"
508 #define OSPF6_STR "Open Shortest Path First (OSPF) for IPv6\n"
509 #define OSPF6_ROUTER_STR "Enable a routing process\n"
510 #define OSPF6_INSTANCE_STR "<1-65535> Instance ID\n"
511 #define SECONDS_STR "<1-65535> Seconds\n"
512 #define ROUTE_STR "Routing Table\n"
513 #define PREFIX_LIST_STR "Build a prefix list\n"
514 #define OSPF6_DUMP_TYPE_LIST \
515 "(neighbor|interface|area|lsa|zebra|config|dbex|spf|route|lsdb|redistribute|hook|asbr|prefix|abr)"
516 #define ISIS_STR "IS-IS information\n"
517 #define AREA_TAG_STR "[area tag]\n"
518 #define MPLS_TE_STR "MPLS-TE specific commands\n"
519 #define LINK_PARAMS_STR "Configure interface link parameters\n"
520 #define OSPF_RI_STR "OSPF Router Information specific commands\n"
521 #define PCE_STR "PCE Router Information specific commands\n"
523 #define CONF_BACKUP_EXT ".sav"
525 /* IPv4 only machine should not accept IPv6 address for peer's IP
526 address. So we replace VTY command string like below. */
528 #define NEIGHBOR_CMD "neighbor (A.B.C.D|X:X::X:X) "
529 #define NO_NEIGHBOR_CMD "no neighbor (A.B.C.D|X:X::X:X) "
530 #define NEIGHBOR_ADDR_STR "Neighbor address\nIPv6 address\n"
531 #define NEIGHBOR_CMD2 "neighbor (A.B.C.D|X:X::X:X|WORD) "
532 #define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|X:X::X:X|WORD) "
533 #define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor IPv6 address\nNeighbor tag\n"
535 #define NEIGHBOR_CMD "neighbor A.B.C.D "
536 #define NO_NEIGHBOR_CMD "no neighbor A.B.C.D "
537 #define NEIGHBOR_ADDR_STR "Neighbor address\n"
538 #define NEIGHBOR_CMD2 "neighbor (A.B.C.D|WORD) "
539 #define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|WORD) "
540 #define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor tag\n"
541 #endif /* HAVE_IPV6 */
544 extern void install_node (struct cmd_node *, int (*) (struct vty *));
545 extern void install_default (enum node_type);
546 extern void install_element (enum node_type, struct cmd_element *);
548 /* Concatenates argv[shift] through argv[argc-1] into a single NUL-terminated
549 string with a space between each element (allocated using
550 XMALLOC(MTYPE_TMP)). Returns NULL if shift >= argc. */
551 extern char *argv_concat (const char **argv, int argc, int shift);
553 extern vector cmd_make_strvec (const char *);
554 extern void cmd_free_strvec (vector);
555 extern vector cmd_describe_command (vector, struct vty *, int *status);
556 extern char **cmd_complete_command (vector, struct vty *, int *status);
557 extern char **cmd_complete_command_lib (vector, struct vty *, int *status, int islib);
558 extern const char *cmd_prompt (enum node_type);
559 extern int command_config_read_one_line (struct vty *vty, struct cmd_element **, int use_config_node);
560 extern int config_from_file (struct vty *, FILE *, unsigned int *line_num);
561 extern enum node_type node_parent (enum node_type);
562 extern int cmd_execute_command (vector, struct vty *, struct cmd_element **, int);
563 extern int cmd_execute_command_strict (vector, struct vty *, struct cmd_element **);
564 extern void cmd_init (int);
565 extern void cmd_terminate (void);
567 /* Export typical functions. */
568 extern struct cmd_element config_end_cmd;
569 extern struct cmd_element config_exit_cmd;
570 extern struct cmd_element config_quit_cmd;
571 extern struct cmd_element config_help_cmd;
572 extern struct cmd_element config_list_cmd;
573 extern const char *host_config_get (void);
574 extern void host_config_set (char *);
576 extern void print_version (const char *);
578 /* struct host global, ick */
579 extern struct host host;
582 extern char *command_cr;
583 #endif /* _ZEBRA_COMMAND_H */