lib/command.h

   1 /*
   2  * Zebra configuration command 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
   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.
  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  *
  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
  20  */
  21
  22 #ifndef _ZEBRA_COMMAND_H
  23 #define _ZEBRA_COMMAND_H
  24
  25 #include "vector.h"
  26 #include "vty.h"
  27 #include "lib/route_types.h"
  28 #include "graph.h"
  29 #include "memory.h"
  30 #include "hash.h"
  31 #include "command_graph.h"
  32
  33 DECLARE_MTYPE(HOST)
  34 DECLARE_MTYPE(COMPLETION)
  35
  36 /* Host configuration variable */
  37 struct host {
  38         /* Host name of this router. */
  39         char *name;
  40
  41         /* Domainname of this router */
  42         char *domainname;
  43
  44         /* Password for vty interface. */
  45         char *password;
  46         char *password_encrypt;
  47
  48         /* Enable password */
  49         char *enable;
  50         char *enable_encrypt;
  51
  52         /* System wide terminal lines. */
  53         int lines;
  54
  55         /* Log filename. */
  56         char *logfile;
  57
  58         /* config file name of this host */
  59         char *config;
  60         int noconfig;
  61
  62         /* Flags for services */
  63         int advanced;
  64         int encrypt;
  65
  66         /* Banner configuration. */
  67         const char *motd;
  68         char *motdfile;
  69 };
  70
  71 /* List of CLI nodes. Please remember to update the name array in command.c. */
  72 enum node_type {
  73         AUTH_NODE,               /* Authentication mode of vty interface. */
  74         VIEW_NODE,               /* View node. Default mode of vty interface. */
  75         AUTH_ENABLE_NODE,       /* Authentication mode for change enable. */
  76         ENABLE_NODE,             /* Enable node. */
  77         CONFIG_NODE,             /* Config node. Default mode of config file. */
  78         DEBUG_NODE,              /* Debug node. */
  79         VRF_DEBUG_NODE,          /* Vrf Debug node. */
  80         DEBUG_VNC_NODE,          /* Debug VNC node. */
  81         AAA_NODE,                /* AAA node. */
  82         KEYCHAIN_NODE,           /* Key-chain node. */
  83         KEYCHAIN_KEY_NODE,       /* Key-chain key node. */
  84         LOGICALROUTER_NODE,      /* Logical-Router node. */
  85         IP_NODE,                 /* Static ip route node. */
  86         VRF_NODE,                /* VRF mode node. */
  87         INTERFACE_NODE,          /* Interface mode node. */
  88         NH_GROUP_NODE,           /* Nexthop-Group mode node. */
  89         ZEBRA_NODE,              /* zebra connection node. */
  90         TABLE_NODE,              /* rtm_table selection node. */
  91         RIP_NODE,                /* RIP protocol mode node. */
  92         RIPNG_NODE,              /* RIPng protocol mode node. */
  93         BABEL_NODE,              /* BABEL protocol mode node. */
  94         EIGRP_NODE,              /* EIGRP protocol mode node. */
  95         BGP_NODE,                /* BGP protocol mode which includes BGP4+ */
  96         BGP_VPNV4_NODE,          /* BGP MPLS-VPN PE exchange. */
  97         BGP_VPNV6_NODE,          /* BGP MPLS-VPN PE exchange. */
  98         BGP_IPV4_NODE,           /* BGP IPv4 unicast address family.  */
  99         BGP_IPV4M_NODE,          /* BGP IPv4 multicast address family.  */
 100         BGP_IPV4L_NODE,          /* BGP IPv4 labeled unicast address family.  */
 101         BGP_IPV6_NODE,           /* BGP IPv6 address family */
 102         BGP_IPV6M_NODE,          /* BGP IPv6 multicast address family. */
 103         BGP_IPV6L_NODE,          /* BGP IPv6 labeled unicast address family. */
 104         BGP_VRF_POLICY_NODE,     /* BGP VRF policy */
 105         BGP_VNC_DEFAULTS_NODE,   /* BGP VNC nve defaults */
 106         BGP_VNC_NVE_GROUP_NODE,  /* BGP VNC nve group */
 107         BGP_VNC_L2_GROUP_NODE,   /* BGP VNC L2 group */
 108         RFP_DEFAULTS_NODE,       /* RFP defaults node */
 109         BGP_EVPN_NODE,           /* BGP EVPN node. */
 110         OSPF_NODE,               /* OSPF protocol mode */
 111         OSPF6_NODE,              /* OSPF protocol for IPv6 mode */
 112         LDP_NODE,                /* LDP protocol mode */
 113         LDP_IPV4_NODE,           /* LDP IPv4 address family */
 114         LDP_IPV6_NODE,           /* LDP IPv6 address family */
 115         LDP_IPV4_IFACE_NODE,     /* LDP IPv4 Interface */
 116         LDP_IPV6_IFACE_NODE,     /* LDP IPv6 Interface */
 117         LDP_L2VPN_NODE,          /* LDP L2VPN node */
 118         LDP_PSEUDOWIRE_NODE,     /* LDP Pseudowire node */
 119         ISIS_NODE,               /* ISIS protocol mode */
 120         ACCESS_NODE,             /* Access list node. */
 121         PREFIX_NODE,             /* Prefix list node. */
 122         ACCESS_IPV6_NODE,       /* Access list node. */
 123         ACCESS_MAC_NODE,         /* MAC access list node*/
 124         PREFIX_IPV6_NODE,       /* Prefix list node. */
 125         AS_LIST_NODE,            /* AS list node. */
 126         COMMUNITY_LIST_NODE,     /* Community list node. */
 127         RMAP_NODE,               /* Route map node. */
 128         PBRMAP_NODE,             /* PBR map node. */
 129         SMUX_NODE,               /* SNMP configuration node. */
 130         DUMP_NODE,               /* Packet dump node. */
 131         FORWARDING_NODE,         /* IP forwarding node. */
 132         PROTOCOL_NODE,           /* protocol filtering node */
 133         MPLS_NODE,               /* MPLS config node */
 134         PW_NODE,                 /* Pseudowire config node */
 135         VTY_NODE,                /* Vty node. */
 136         LINK_PARAMS_NODE,       /* Link-parameters node */
 137         BGP_EVPN_VNI_NODE,       /* BGP EVPN VNI */
 138         RPKI_NODE,     /* RPKI node for configuration of RPKI cache server
 139                           connections.*/
 140         BGP_FLOWSPECV4_NODE,    /* BGP IPv4 FLOWSPEC Address-Family */
 141         BGP_FLOWSPECV6_NODE,    /* BGP IPv6 FLOWSPEC Address-Family */
 142         NODE_TYPE_MAX, /* maximum */
 143 };
 144
 145 extern vector cmdvec;
 146 extern const struct message tokennames[];
 147 extern const char *node_names[];
 148
 149 /* Node which has some commands and prompt string and configuration
 150    function pointer . */
 151 struct cmd_node {
 152         /* Node index. */
 153         enum node_type node;
 154
 155         /* Prompt character at vty interface. */
 156         const char *prompt;
 157
 158         /* Is this node's configuration goes to vtysh ? */
 159         int vtysh;
 160
 161         /* Node's configuration write function */
 162         int (*func)(struct vty *);
 163
 164         /* Node's command graph */
 165         struct graph *cmdgraph;
 166
 167         /* Vector of this node's command list. */
 168         vector cmd_vector;
 169
 170         /* Hashed index of command node list, for de-dupping primarily */
 171         struct hash *cmd_hash;
 172 };
 173
 174 /* Return value of the commands. */
 175 #define CMD_SUCCESS              0
 176 #define CMD_WARNING              1
 177 #define CMD_ERR_NO_MATCH         2
 178 #define CMD_ERR_AMBIGUOUS        3
 179 #define CMD_ERR_INCOMPLETE       4
 180 #define CMD_ERR_EXEED_ARGC_MAX   5
 181 #define CMD_ERR_NOTHING_TODO     6
 182 #define CMD_COMPLETE_FULL_MATCH  7
 183 #define CMD_COMPLETE_MATCH       8
 184 #define CMD_COMPLETE_LIST_MATCH  9
 185 #define CMD_SUCCESS_DAEMON      10
 186 #define CMD_ERR_NO_FILE         11
 187 #define CMD_SUSPEND             12
 188 #define CMD_WARNING_CONFIG_FAILED 13
 189 #define CMD_NOT_MY_INSTANCE     14
 190
 191 /* Argc max counts. */
 192 #define CMD_ARGC_MAX   256
 193
 194 /* Turn off these macros when uisng cpp with extract.pl */
 195 #ifndef VTYSH_EXTRACT_PL
 196
 197 /* helper defines for end-user DEFUN* macros */
 198 #define DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attrs, dnum)     \
 199         static struct cmd_element cmdname = {                                  \
 200                 .string = cmdstr,                                              \
 201                 .func = funcname,                                              \
 202                 .doc = helpstr,                                                \
 203                 .attr = attrs,                                                 \
 204                 .daemon = dnum,                                                \
 205                 .name = #cmdname,                                              \
 206         };
 207
 208 #define DEFUN_CMD_FUNC_DECL(funcname)                                          \
 209         static int funcname(const struct cmd_element *, struct vty *, int,     \
 210                             struct cmd_token *[]);
 211
 212 #define DEFUN_CMD_FUNC_TEXT(funcname)                                          \
 213         static int funcname(const struct cmd_element *self                     \
 214                             __attribute__((unused)),                           \
 215                             struct vty *vty __attribute__((unused)),           \
 216                             int argc __attribute__((unused)),                  \
 217                             struct cmd_token *argv[] __attribute__((unused)))
 218
 219 #define DEFPY(funcname, cmdname, cmdstr, helpstr)                              \
 220         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0)            \
 221         funcdecl_##funcname
 222
 223 #define DEFPY_NOSH(funcname, cmdname, cmdstr, helpstr)                         \
 224         DEFPY(funcname, cmdname, cmdstr, helpstr)
 225
 226 #define DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 227         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)         \
 228         funcdecl_##funcname
 229
 230 #define DEFPY_HIDDEN(funcname, cmdname, cmdstr, helpstr)                       \
 231         DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
 232
 233 #define DEFUN(funcname, cmdname, cmdstr, helpstr)                              \
 234         DEFUN_CMD_FUNC_DECL(funcname)                                          \
 235         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0)            \
 236         DEFUN_CMD_FUNC_TEXT(funcname)
 237
 238 #define DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 239         DEFUN_CMD_FUNC_DECL(funcname)                                          \
 240         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)         \
 241         DEFUN_CMD_FUNC_TEXT(funcname)
 242
 243 #define DEFUN_HIDDEN(funcname, cmdname, cmdstr, helpstr)                       \
 244         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
 245
 246 /* DEFUN_NOSH for commands that vtysh should ignore */
 247 #define DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr)                         \
 248         DEFUN(funcname, cmdname, cmdstr, helpstr)
 249
 250 /* DEFSH for vtysh. */
 251 #define DEFSH(daemon, cmdname, cmdstr, helpstr)                                \
 252         DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, 0, daemon)
 253
 254 #define DEFSH_HIDDEN(daemon, cmdname, cmdstr, helpstr)                         \
 255         DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN,     \
 256                           daemon)
 257
 258 /* DEFUN + DEFSH */
 259 #define DEFUNSH(daemon, funcname, cmdname, cmdstr, helpstr)                    \
 260         DEFUN_CMD_FUNC_DECL(funcname)                                          \
 261         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon)       \
 262         DEFUN_CMD_FUNC_TEXT(funcname)
 263
 264 /* DEFUN + DEFSH with attributes */
 265 #define DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, attr)         \
 266         DEFUN_CMD_FUNC_DECL(funcname)                                          \
 267         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, daemon)    \
 268         DEFUN_CMD_FUNC_TEXT(funcname)
 269
 270 #define DEFUNSH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr)             \
 271         DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr,               \
 272                      CMD_ATTR_HIDDEN)
 273
 274 #define DEFUNSH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr)         \
 275         DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr,               \
 276                      CMD_ATTR_DEPRECATED)
 277
 278 /* ALIAS macro which define existing command's alias. */
 279 #define ALIAS(funcname, cmdname, cmdstr, helpstr)                              \
 280         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0)
 281
 282 #define ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 283         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)
 284
 285 #define ALIAS_HIDDEN(funcname, cmdname, cmdstr, helpstr)                       \
 286         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, \
 287                           0)
 288
 289 #define ALIAS_DEPRECATED(funcname, cmdname, cmdstr, helpstr)                   \
 290         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr,                  \
 291                           CMD_ATTR_DEPRECATED, 0)
 292
 293 #define ALIAS_SH(daemon, funcname, cmdname, cmdstr, helpstr)                   \
 294         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon)
 295
 296 #define ALIAS_SH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr)            \
 297         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, \
 298                           daemon)
 299
 300 #define ALIAS_SH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr)        \
 301         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr,                  \
 302                           CMD_ATTR_DEPRECATED, daemon)
 303
 304 #else /* VTYSH_EXTRACT_PL */
 305 #define DEFPY(funcname, cmdname, cmdstr, helpstr)                              \
 306         DEFUN(funcname, cmdname, cmdstr, helpstr)
 307
 308 #define DEFPY_NOSH(funcname, cmdname, cmdstr, helpstr)                         \
 309         DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr)
 310
 311 #define DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 312         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr)
 313 #endif /* VTYSH_EXTRACT_PL */
 314
 315 /* Some macroes */
 316
 317 /*
 318  * Sometimes #defines create maximum values that
 319  * need to have strings created from them that
 320  * allow the parser to match against them.
 321  * These macros allow that.
 322  */
 323 #define CMD_CREATE_STR(s)  CMD_CREATE_STR_HELPER(s)
 324 #define CMD_CREATE_STR_HELPER(s) #s
 325 #define CMD_RANGE_STR(a,s) "(" CMD_CREATE_STR(a) "-" CMD_CREATE_STR(s) ")"
 326
 327 /* Common descriptions. */
 328 #define SHOW_STR "Show running system information\n"
 329 #define IP_STR "IP information\n"
 330 #define IPV6_STR "IPv6 information\n"
 331 #define NO_STR "Negate a command or set its defaults\n"
 332 #define REDIST_STR "Redistribute information from another routing protocol\n"
 333 #define CLEAR_STR "Reset functions\n"
 334 #define RIP_STR "RIP information\n"
 335 #define EIGRP_STR "EIGRP information\n"
 336 #define BGP_STR "BGP information\n"
 337 #define BGP_SOFT_STR "Soft reconfig inbound and outbound updates\n"
 338 #define BGP_SOFT_IN_STR "Send route-refresh unless using 'soft-reconfiguration inbound'\n"
 339 #define BGP_SOFT_OUT_STR "Resend all outbound updates\n"
 340 #define BGP_SOFT_RSCLIENT_RIB_STR "Soft reconfig for rsclient RIB\n"
 341 #define OSPF_STR "OSPF information\n"
 342 #define NEIGHBOR_STR "Specify neighbor router\n"
 343 #define DEBUG_STR "Debugging functions\n"
 344 #define UNDEBUG_STR "Disable debugging functions (see also 'debug')\n"
 345 #define ROUTER_STR "Enable a routing process\n"
 346 #define AS_STR "AS number\n"
 347 #define MAC_STR "MAC address\n"
 348 #define MBGP_STR "MBGP information\n"
 349 #define MATCH_STR "Match values from routing table\n"
 350 #define SET_STR "Set values in destination routing protocol\n"
 351 #define OUT_STR "Filter outgoing routing updates\n"
 352 #define IN_STR  "Filter incoming routing updates\n"
 353 #define V4NOTATION_STR "specify by IPv4 address notation(e.g. 0.0.0.0)\n"
 354 #define OSPF6_NUMBER_STR "Specify by number\n"
 355 #define INTERFACE_STR "Interface infomation\n"
 356 #define IFNAME_STR "Interface name(e.g. ep0)\n"
 357 #define IP6_STR "IPv6 Information\n"
 358 #define OSPF6_STR "Open Shortest Path First (OSPF) for IPv6\n"
 359 #define OSPF6_INSTANCE_STR "(1-65535) Instance ID\n"
 360 #define SECONDS_STR "Seconds\n"
 361 #define ROUTE_STR "Routing Table\n"
 362 #define PREFIX_LIST_STR "Build a prefix list\n"
 363 #define OSPF6_DUMP_TYPE_LIST                                                   \
 364         "<neighbor|interface|area|lsa|zebra|config|dbex|spf|route|lsdb|redistribute|hook|asbr|prefix|abr>"
 365 #define ISIS_STR "IS-IS information\n"
 366 #define AREA_TAG_STR "[area tag]\n"
 367 #define COMMUNITY_AANN_STR "Community number where AA and NN are (0-65535)\n"
 368 #define COMMUNITY_VAL_STR  "Community number in AA:NN format (where AA and NN are (0-65535)) or local-AS|no-advertise|no-export|internet or additive\n"
 369 #define MPLS_TE_STR "MPLS-TE specific commands\n"
 370 #define LINK_PARAMS_STR "Configure interface link parameters\n"
 371 #define OSPF_RI_STR "OSPF Router Information specific commands\n"
 372 #define PCE_STR "PCE Router Information specific commands\n"
 373 #define MPLS_STR "MPLS information\n"
 374 #define SR_STR "Segment-Routing specific commands\n"
 375 #define WATCHFRR_STR "watchfrr information\n"
 376 #define ZEBRA_STR "Zebra information\n"
 377
 378 #define CONF_BACKUP_EXT ".sav"
 379
 380 /* Command warnings. */
 381 #define NO_PASSWD_CMD_WARNING                                                  \
 382         "Please be aware that removing the password is a security risk and you should think twice about this command.\n"
 383
 384 /* IPv4 only machine should not accept IPv6 address for peer's IP
 385    address.  So we replace VTY command string like below. */
 386 #define NEIGHBOR_ADDR_STR  "Neighbor address\nIPv6 address\n"
 387 #define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor IPv6 address\nInterface name or neighbor tag\n"
 388 #define NEIGHBOR_ADDR_STR3 "Neighbor address\nIPv6 address\nInterface name\n"
 389
 390 /* Prototypes. */
 391 extern void install_node(struct cmd_node *, int (*)(struct vty *));
 392 extern void install_default(enum node_type);
 393 extern void install_element(enum node_type, struct cmd_element *);
 394
 395 /* known issue with uninstall_element:  changes to cmd_token->attr (i.e.
 396  * deprecated/hidden) are not reversed. */
 397 extern void uninstall_element(enum node_type, struct cmd_element *);
 398
 399 /* Concatenates argv[shift] through argv[argc-1] into a single NUL-terminated
 400    string with a space between each element (allocated using
 401    XMALLOC(MTYPE_TMP)).  Returns NULL if shift >= argc. */
 402 extern char *argv_concat(struct cmd_token **argv, int argc, int shift);
 403
 404 /*
 405  * It is preferred that you set the index initial value
 406  * to a 0.  This way in the future if you modify the
 407  * cli then there is no need to modify the initial
 408  * value of the index
 409  */
 410 extern int argv_find(struct cmd_token **argv, int argc, const char *text,
 411                      int *index);
 412
 413 extern vector cmd_make_strvec(const char *);
 414 extern void cmd_free_strvec(vector);
 415 extern vector cmd_describe_command(vector, struct vty *, int *status);
 416 extern char **cmd_complete_command(vector, struct vty *, int *status);
 417 extern const char *cmd_prompt(enum node_type);
 418 extern int command_config_read_one_line(struct vty *vty,
 419                                         const struct cmd_element **,
 420                                         int use_config_node);
 421 extern int config_from_file(struct vty *, FILE *, unsigned int *line_num);
 422 extern enum node_type node_parent(enum node_type);
 423 /*
 424  * Execute command under the given vty context.
 425  *
 426  * vty
 427  *    The vty context to execute under.
 428  *
 429  * cmd
 430  *    The command string to execute.
 431  *
 432  * matched
 433  *    If non-null and a match was found, the address of the matched command is
 434  *    stored here. No action otherwise.
 435  *
 436  * vtysh
 437  *    Whether or not this is being called from vtysh. If this is nonzero,
 438  *    XXX: then what?
 439  *
 440  * Returns:
 441  *    XXX: what does it return
 442  */
 443 extern int cmd_execute(struct vty *vty, const char *cmd,
 444                        const struct cmd_element **matched, int vtysh);
 445 extern int cmd_execute_command(vector, struct vty *,
 446                                const struct cmd_element **, int);
 447 extern int cmd_execute_command_strict(vector, struct vty *,
 448                                       const struct cmd_element **);
 449 extern void cmd_init(int);
 450 extern void cmd_terminate(void);
 451 extern void cmd_exit(struct vty *vty);
 452 extern int cmd_list_cmds(struct vty *vty, int do_permute);
 453
 454 extern int cmd_domainname_set(const char *domainname);
 455 extern int cmd_hostname_set(const char *hostname);
 456 extern const char *cmd_hostname_get(void);
 457 extern const char *cmd_domainname_get(void);
 458
 459 /* NOT safe for general use; call this only if DEV_BUILD! */
 460 extern void grammar_sandbox_init(void);
 461
 462 extern vector completions_to_vec(struct list *completions);
 463
 464 /* Export typical functions. */
 465 extern const char *host_config_get(void);
 466 extern void host_config_set(const char *);
 467
 468 extern void print_version(const char *);
 469
 470 extern int cmd_banner_motd_file(const char *);
 471
 472 /* struct host global, ick */
 473 extern struct host host;
 474
 475 struct cmd_variable_handler {
 476         const char *tokenname, *varname;
 477         void (*completions)(vector out, struct cmd_token *token);
 478 };
 479
 480 extern void cmd_variable_complete(struct cmd_token *token, const char *arg,
 481                                   vector comps);
 482 extern void
 483 cmd_variable_handler_register(const struct cmd_variable_handler *cvh);
 484 extern char *cmd_variable_comp2str(vector comps, unsigned short cols);
 485
 486 extern void command_setup_early_logging(const char *dest, const char *level);
 487 #endif /* _ZEBRA_COMMAND_H */