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 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 DECLARE_MTYPE(COMPLETION);
  38
  39 /*
  40  * From RFC 1123 (Requirements for Internet Hosts), Section 2.1 on hostnames:
  41  * One aspect of host name syntax is hereby changed: the restriction on
  42  * the first character is relaxed to allow either a letter or a digit.
  43  * Host software MUST support this more liberal syntax.
  44  *
  45  * Host software MUST handle host names of up to 63 characters and
  46  * SHOULD handle host names of up to 255 characters.
  47  */
  48 #define HOSTNAME_LEN   255
  49
  50 /* Host configuration variable */
  51 struct host {
  52         /* Host name of this router. */
  53         char *name;
  54
  55         /* Domainname of this router */
  56         char *domainname;
  57
  58         /*
  59          * Some extra system data that is useful
  60          */
  61         char *system;
  62         char *release;
  63         char *version;
  64
  65         /* Password for vty interface. */
  66         char *password;
  67         char *password_encrypt;
  68
  69         /* Enable password */
  70         char *enable;
  71         char *enable_encrypt;
  72
  73         /* System wide terminal lines. */
  74         int lines;
  75
  76         /* config file name of this host */
  77         char *config;
  78         int noconfig;
  79
  80         /* Flags for services */
  81         int advanced;
  82         int encrypt;
  83
  84         /* Banner configuration. */
  85         char *motd;
  86         char *motdfile;
  87
  88         /* Allow using IPv4 (Class E) reserved IP space */
  89         bool allow_reserved_ranges;
  90 };
  91
  92 /* List of CLI nodes. Please remember to update the name array in command.c. */
  93 enum node_type {
  94         AUTH_NODE,               /* Authentication mode of vty interface. */
  95         VIEW_NODE,               /* View node. Default mode of vty interface. */
  96         AUTH_ENABLE_NODE,       /* Authentication mode for change enable. */
  97         ENABLE_NODE,             /* Enable node. */
  98         CONFIG_NODE,             /* Config node. Default mode of config file. */
  99         DEBUG_NODE,              /* Debug node. */
 100         VRF_DEBUG_NODE,          /* Vrf Debug node. */
 101         NORTHBOUND_DEBUG_NODE,   /* Northbound Debug node. */
 102         DEBUG_VNC_NODE,          /* Debug VNC node. */
 103         RMAP_DEBUG_NODE,         /* Route-map debug node */
 104         RESOLVER_DEBUG_NODE,     /* Resolver debug node */
 105         AAA_NODE,                /* AAA node. */
 106         EXTLOG_NODE,             /* RFC5424 & co. extended syslog */
 107         KEYCHAIN_NODE,           /* Key-chain node. */
 108         KEYCHAIN_KEY_NODE,       /* Key-chain key node. */
 109         IP_NODE,                 /* Static ip route node. */
 110         VRF_NODE,                /* VRF mode node. */
 111         INTERFACE_NODE,          /* Interface mode node. */
 112         NH_GROUP_NODE,           /* Nexthop-Group mode node. */
 113         ZEBRA_NODE,              /* zebra connection node. */
 114         TABLE_NODE,              /* rtm_table selection node. */
 115         RIP_NODE,                /* RIP protocol mode node. */
 116         RIPNG_NODE,              /* RIPng protocol mode node. */
 117         BABEL_NODE,              /* BABEL protocol mode node. */
 118         EIGRP_NODE,              /* EIGRP protocol mode node. */
 119         BGP_NODE,                /* BGP protocol mode which includes BGP4+ */
 120         BGP_VPNV4_NODE,          /* BGP MPLS-VPN PE exchange. */
 121         BGP_VPNV6_NODE,          /* BGP MPLS-VPN PE exchange. */
 122         BGP_IPV4_NODE,           /* BGP IPv4 unicast address family.  */
 123         BGP_IPV4M_NODE,          /* BGP IPv4 multicast address family.  */
 124         BGP_IPV4L_NODE,          /* BGP IPv4 labeled unicast address family.  */
 125         BGP_IPV6_NODE,           /* BGP IPv6 address family */
 126         BGP_IPV6M_NODE,          /* BGP IPv6 multicast address family. */
 127         BGP_IPV6L_NODE,          /* BGP IPv6 labeled unicast address family. */
 128         BGP_VRF_POLICY_NODE,     /* BGP VRF policy */
 129         BGP_VNC_DEFAULTS_NODE,   /* BGP VNC nve defaults */
 130         BGP_VNC_NVE_GROUP_NODE,  /* BGP VNC nve group */
 131         BGP_VNC_L2_GROUP_NODE,   /* BGP VNC L2 group */
 132         RFP_DEFAULTS_NODE,       /* RFP defaults node */
 133         BGP_EVPN_NODE,           /* BGP EVPN node. */
 134         BGP_SRV6_NODE,           /* BGP SRv6 node. */
 135         OSPF_NODE,               /* OSPF protocol mode */
 136         OSPF6_NODE,              /* OSPF protocol for IPv6 mode */
 137         LDP_NODE,                /* LDP protocol mode */
 138         LDP_IPV4_NODE,           /* LDP IPv4 address family */
 139         LDP_IPV6_NODE,           /* LDP IPv6 address family */
 140         LDP_IPV4_IFACE_NODE,     /* LDP IPv4 Interface */
 141         LDP_IPV6_IFACE_NODE,     /* LDP IPv6 Interface */
 142         LDP_L2VPN_NODE,          /* LDP L2VPN node */
 143         LDP_PSEUDOWIRE_NODE,     /* LDP Pseudowire node */
 144         ISIS_NODE,               /* ISIS protocol mode */
 145         ACCESS_NODE,             /* Access list node. */
 146         PREFIX_NODE,             /* Prefix list node. */
 147         ACCESS_IPV6_NODE,       /* Access list node. */
 148         ACCESS_MAC_NODE,         /* MAC access list node*/
 149         PREFIX_IPV6_NODE,       /* Prefix list node. */
 150         AS_LIST_NODE,            /* AS list node. */
 151         COMMUNITY_LIST_NODE,     /* Community list node. */
 152         COMMUNITY_ALIAS_NODE, /* Community alias node. */
 153         RMAP_NODE,               /* Route map node. */
 154         PBRMAP_NODE,             /* PBR map node. */
 155         SMUX_NODE,               /* SNMP configuration node. */
 156         DUMP_NODE,               /* Packet dump node. */
 157         FORWARDING_NODE,         /* IP forwarding node. */
 158         PROTOCOL_NODE,           /* protocol filtering node */
 159         MPLS_NODE,               /* MPLS config node */
 160         PW_NODE,                 /* Pseudowire config node */
 161         SEGMENT_ROUTING_NODE,    /* Segment routing root node */
 162         SR_TRAFFIC_ENG_NODE,     /* SR Traffic Engineering node */
 163         SR_SEGMENT_LIST_NODE,    /* SR segment list config node */
 164         SR_POLICY_NODE,          /* SR policy config node */
 165         SR_CANDIDATE_DYN_NODE,   /* SR dynamic candidate path config node */
 166         PCEP_NODE,               /* PCEP node */
 167         PCEP_PCE_CONFIG_NODE,    /* PCE shared configuration node */
 168         PCEP_PCE_NODE,           /* PCE configuration node */
 169         PCEP_PCC_NODE,           /* PCC configuration node */
 170         SRV6_NODE,               /* SRv6 node */
 171         SRV6_LOCS_NODE,          /* SRv6 locators node */
 172         SRV6_LOC_NODE,           /* SRv6 locator node */
 173         VTY_NODE,                /* Vty node. */
 174         FPM_NODE,                /* Dataplane FPM node. */
 175         LINK_PARAMS_NODE,       /* Link-parameters node */
 176         BGP_EVPN_VNI_NODE,       /* BGP EVPN VNI */
 177         RPKI_NODE,     /* RPKI node for configuration of RPKI cache server
 178                           connections.*/
 179         BGP_FLOWSPECV4_NODE,    /* BGP IPv4 FLOWSPEC Address-Family */
 180         BGP_FLOWSPECV6_NODE,    /* BGP IPv6 FLOWSPEC Address-Family */
 181         BFD_NODE,                /* BFD protocol mode. */
 182         BFD_PEER_NODE,           /* BFD peer configuration mode. */
 183         BFD_PROFILE_NODE,        /* BFD profile configuration mode. */
 184         OPENFABRIC_NODE,        /* OpenFabric router configuration node */
 185         VRRP_NODE,               /* VRRP node */
 186         BMP_NODE,               /* BMP config under router bgp */
 187         NODE_TYPE_MAX, /* maximum */
 188 };
 189
 190 extern vector cmdvec;
 191 extern const struct message tokennames[];
 192
 193 /* for external users depending on struct layout */
 194 #define FRR_CMD_NODE_20200416
 195
 196 /* Node which has some commands and prompt string and configuration
 197    function pointer . */
 198 struct cmd_node {
 199         const char *name;
 200
 201         /* Node index. */
 202         enum node_type node;
 203         enum node_type parent_node;
 204
 205         /* Prompt character at vty interface. */
 206         const char *prompt;
 207
 208         /* Node's configuration write function */
 209         int (*config_write)(struct vty *);
 210
 211         /* called when leaving the node on a VTY session.
 212          * return 1 if normal exit processing should happen, 0 to suppress
 213          */
 214         int (*node_exit)(struct vty *);
 215
 216         /* Node's command graph */
 217         struct graph *cmdgraph;
 218
 219         /* Vector of this node's command list. */
 220         vector cmd_vector;
 221
 222         /* Hashed index of command node list, for de-dupping primarily */
 223         struct hash *cmd_hash;
 224
 225         /* set as soon as any command is in cmdgraph */
 226         bool graph_built;
 227
 228         /* don't decrement vty->xpath_index on leaving this node */
 229         bool no_xpath;
 230 };
 231
 232 /* Return value of the commands. */
 233 #define CMD_SUCCESS              0
 234 #define CMD_WARNING              1
 235 #define CMD_ERR_NO_MATCH         2
 236 #define CMD_ERR_AMBIGUOUS        3
 237 #define CMD_ERR_INCOMPLETE       4
 238 #define CMD_ERR_EXEED_ARGC_MAX   5
 239 #define CMD_ERR_NOTHING_TODO     6
 240 #define CMD_COMPLETE_FULL_MATCH  7
 241 #define CMD_COMPLETE_MATCH       8
 242 #define CMD_COMPLETE_LIST_MATCH  9
 243 #define CMD_SUCCESS_DAEMON      10
 244 #define CMD_ERR_NO_FILE         11
 245 #define CMD_SUSPEND             12
 246 #define CMD_WARNING_CONFIG_FAILED 13
 247 #define CMD_NOT_MY_INSTANCE     14
 248 #define CMD_NO_LEVEL_UP 15
 249 #define CMD_ERR_NO_DAEMON 16
 250
 251 /* Argc max counts. */
 252 #define CMD_ARGC_MAX   256
 253
 254 /* helper defines for end-user DEFUN* macros */
 255 #define DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attrs, dnum)     \
 256         static const struct cmd_element cmdname = {                            \
 257                 .string = cmdstr,                                              \
 258                 .func = funcname,                                              \
 259                 .doc = helpstr,                                                \
 260                 .attr = attrs,                                                 \
 261                 .daemon = dnum,                                                \
 262                 .name = #cmdname,                                              \
 263                 .xref = XREF_INIT(XREFT_DEFUN, NULL, #funcname),               \
 264         };                                                                     \
 265         XREF_LINK(cmdname.xref);                                               \
 266         /* end */
 267
 268
 269 #define DEFUN_CMD_FUNC_DECL(funcname)                                          \
 270         static int funcname(const struct cmd_element *, struct vty *, int,     \
 271                             struct cmd_token *[]);
 272
 273 #define DEFUN_CMD_FUNC_TEXT(funcname)                                          \
 274         static int funcname(const struct cmd_element *self                     \
 275                             __attribute__((unused)),                           \
 276                             struct vty *vty __attribute__((unused)),           \
 277                             int argc __attribute__((unused)),                  \
 278                             struct cmd_token *argv[] __attribute__((unused)))
 279
 280 /* DEFPY variants */
 281
 282 #define DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 283         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)         \
 284         funcdecl_##funcname
 285
 286 #define DEFPY(funcname, cmdname, cmdstr, helpstr)                              \
 287         DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, 0)
 288
 289 #define DEFPY_NOSH(funcname, cmdname, cmdstr, helpstr)                         \
 290         DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_NOSH)
 291
 292 #define DEFPY_HIDDEN(funcname, cmdname, cmdstr, helpstr)                       \
 293         DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
 294
 295 #define DEFPY_YANG(funcname, cmdname, cmdstr, helpstr)                         \
 296         DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_YANG)
 297
 298 #define DEFPY_YANG_NOSH(funcname, cmdname, cmdstr, helpstr)                    \
 299         DEFPY_ATTR(funcname, cmdname, cmdstr, helpstr,                         \
 300                    CMD_ATTR_YANG | CMD_ATTR_NOSH)
 301
 302 /* DEFUN variants */
 303
 304 #define DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 305         DEFUN_CMD_FUNC_DECL(funcname)                                          \
 306         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)         \
 307         DEFUN_CMD_FUNC_TEXT(funcname)
 308
 309 #define DEFUN(funcname, cmdname, cmdstr, helpstr)                              \
 310         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, 0)
 311
 312 #define DEFUN_HIDDEN(funcname, cmdname, cmdstr, helpstr)                       \
 313         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
 314
 315 #define DEFUN_YANG(funcname, cmdname, cmdstr, helpstr)                         \
 316         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_YANG)
 317
 318 /* DEFUN_NOSH for commands that vtysh should ignore */
 319 #define DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr)                         \
 320         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_NOSH)
 321
 322 #define DEFUN_YANG_NOSH(funcname, cmdname, cmdstr, helpstr)                    \
 323         DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr,                         \
 324                    CMD_ATTR_YANG | CMD_ATTR_NOSH)
 325
 326 /* DEFSH for vtysh. */
 327 #define DEFSH_ATTR(daemon, cmdname, cmdstr, helpstr, attr)                     \
 328         DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, attr, daemon)
 329
 330 #define DEFSH(daemon, cmdname, cmdstr, helpstr)                                \
 331         DEFSH_ATTR(daemon, cmdname, cmdstr, helpstr, 0)
 332
 333 #define DEFSH_HIDDEN(daemon, cmdname, cmdstr, helpstr)                         \
 334         DEFSH_ATTR(daemon, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
 335
 336 /* DEFUN + DEFSH */
 337 #define DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, attr)         \
 338         DEFUN_CMD_FUNC_DECL(funcname)                                          \
 339         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, daemon)    \
 340         DEFUN_CMD_FUNC_TEXT(funcname)
 341
 342 #define DEFUNSH(daemon, funcname, cmdname, cmdstr, helpstr)                    \
 343         DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, 0)
 344
 345 #define DEFUNSH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr)             \
 346         DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr,               \
 347                      CMD_ATTR_HIDDEN)
 348
 349 /* ALIAS macro which define existing command's alias. */
 350 #define ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, attr)                   \
 351         DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)
 352
 353 #define ALIAS(funcname, cmdname, cmdstr, helpstr)                              \
 354         ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, 0)
 355
 356 #define ALIAS_HIDDEN(funcname, cmdname, cmdstr, helpstr)                       \
 357         ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
 358
 359 /* note: DEPRECATED implies HIDDEN, and other than that there is currently no
 360  * difference.  It's purely for expressing intent in the source code - a
 361  * DEPRECATED command is supposed to go away, a HIDDEN one is likely to stay.
 362  */
 363 #define ALIAS_DEPRECATED(funcname, cmdname, cmdstr, helpstr)                   \
 364         ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr,                         \
 365                    CMD_ATTR_DEPRECATED | CMD_ATTR_HIDDEN)
 366
 367 #define ALIAS_YANG(funcname, cmdname, cmdstr, helpstr)                         \
 368         ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_YANG)
 369
 370 /* Some macroes */
 371
 372 /*
 373  * Sometimes #defines create maximum values that
 374  * need to have strings created from them that
 375  * allow the parser to match against them.
 376  * These macros allow that.
 377  */
 378 #define CMD_CREATE_STR(s)  CMD_CREATE_STR_HELPER(s)
 379 #define CMD_CREATE_STR_HELPER(s) #s
 380 #define CMD_RANGE_STR(a,s) "(" CMD_CREATE_STR(a) "-" CMD_CREATE_STR(s) ")"
 381
 382 /* Common descriptions. */
 383 #define SHOW_STR "Show running system information\n"
 384 #define IP_STR "IP information\n"
 385 #define IPV6_STR "IPv6 information\n"
 386 #define IP_ADDR_STR "IPv4 Address\n"
 387 #define IP6_ADDR_STR "IPv6 Address\n"
 388 #define SRTE_STR "SR-TE information\n"
 389 #define SRTE_COLOR_STR "SR-TE Color information\n"
 390 #define NO_STR "Negate a command or set its defaults\n"
 391 #define IGNORED_IN_NO_STR "Ignored value in no form\n"
 392 #define REDIST_STR "Redistribute information from another routing protocol\n"
 393 #define CLEAR_STR "Reset functions\n"
 394 #define RIP_STR "RIP information\n"
 395 #define EIGRP_STR "EIGRP information\n"
 396 #define BGP_STR "BGP information\n"
 397 #define BGP_SOFT_STR "Soft reconfig inbound and outbound updates\n"
 398 #define BGP_SOFT_IN_STR "Send route-refresh unless using 'soft-reconfiguration inbound'\n"
 399 #define BGP_SOFT_OUT_STR "Resend all outbound updates\n"
 400 #define BGP_SOFT_RSCLIENT_RIB_STR "Soft reconfig for rsclient RIB\n"
 401 #define OSPF_STR "OSPF information\n"
 402 #define NEIGHBOR_STR "Specify neighbor router\n"
 403 #define DEBUG_STR "Debugging functions\n"
 404 #define UNDEBUG_STR "Disable debugging functions (see also 'debug')\n"
 405 #define ROUTER_STR "Enable a routing process\n"
 406 #define AS_STR "AS number\n"
 407 #define MAC_STR "MAC address\n"
 408 #define MBGP_STR "MBGP information\n"
 409 #define MATCH_STR "Match values from routing table\n"
 410 #define SET_STR "Set values in destination routing protocol\n"
 411 #define OUT_STR "Filter outgoing routing updates\n"
 412 #define IN_STR  "Filter incoming routing updates\n"
 413 #define V4NOTATION_STR "specify by IPv4 address notation(e.g. 0.0.0.0)\n"
 414 #define OSPF6_NUMBER_STR "Specify by number\n"
 415 #define INTERFACE_STR "Interface information\n"
 416 #define IFNAME_STR "Interface name(e.g. ep0)\n"
 417 #define IP6_STR "IPv6 Information\n"
 418 #define OSPF6_STR "Open Shortest Path First (OSPF) for IPv6\n"
 419 #define OSPF6_INSTANCE_STR "(1-65535) Instance ID\n"
 420 #define SECONDS_STR "Seconds\n"
 421 #define ROUTE_STR "Routing Table\n"
 422 #define PREFIX_LIST_STR "Build a prefix list\n"
 423 #define OSPF6_DUMP_TYPE_LIST                                                   \
 424         "<neighbor|interface|area|lsa|zebra|config|dbex|spf|route|lsdb|redistribute|hook|asbr|prefix|abr>"
 425 #define AREA_TAG_STR "[area tag]\n"
 426 #define COMMUNITY_AANN_STR "Community number where AA and NN are (0-65535)\n"
 427 #define COMMUNITY_VAL_STR                                                      \
 428         "Community number in AA:NN format (where AA and NN are (0-65535)) or local-AS|no-advertise|no-export|internet|graceful-shutdown|accept-own-nexthop|accept-own|route-filter-translated-v4|route-filter-v4|route-filter-translated-v6|route-filter-v6|llgr-stale|no-llgr|blackhole|no-peer or additive\n"
 429 #define MPLS_TE_STR "MPLS-TE specific commands\n"
 430 #define LINK_PARAMS_STR "Configure interface link parameters\n"
 431 #define OSPF_RI_STR "OSPF Router Information specific commands\n"
 432 #define PCE_STR "PCE Router Information specific commands\n"
 433 #define MPLS_STR "MPLS information\n"
 434 #define SR_STR "Segment-Routing specific commands\n"
 435 #define WATCHFRR_STR "watchfrr information\n"
 436 #define ZEBRA_STR "Zebra information\n"
 437 #define FILTER_LOG_STR "Filter Logs\n"
 438 #define BFD_PROFILE_STR "BFD profile.\n"
 439 #define BFD_PROFILE_NAME_STR "BFD profile name.\n"
 440 #define SHARP_STR "Sharp Routing Protocol\n"
 441 #define OSPF_GR_STR                                                            \
 442         "OSPF non-stop forwarding (NSF) also known as OSPF Graceful Restart\n"
 443
 444 #define CMD_VNI_RANGE "(1-16777215)"
 445 #define CONF_BACKUP_EXT ".sav"
 446 #define MPLS_LDP_SYNC_STR "Enable MPLS LDP-SYNC\n"
 447 #define NO_MPLS_LDP_SYNC_STR "Disable MPLS LDP-SYNC\n"
 448 #define MPLS_LDP_SYNC_HOLDDOWN_STR                                             \
 449         "Time to wait for LDP-SYNC to occur before restoring if cost\n"
 450 #define NO_MPLS_LDP_SYNC_HOLDDOWN_STR "holddown timer disable\n"
 451
 452 /* Command warnings. */
 453 #define NO_PASSWD_CMD_WARNING                                                  \
 454         "Please be aware that removing the password is a security risk and you should think twice about this command.\n"
 455
 456 /* IPv4 only machine should not accept IPv6 address for peer's IP
 457    address.  So we replace VTY command string like below. */
 458 #define NEIGHBOR_ADDR_STR  "Neighbor address\nIPv6 address\n"
 459 #define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor IPv6 address\nInterface name or neighbor tag\n"
 460 #define NEIGHBOR_ADDR_STR3 "Neighbor address\nIPv6 address\nInterface name\n"
 461
 462 /* Graceful Restart cli help strings */
 463 #define GR_CMD "Global Graceful Restart command\n"
 464 #define NO_GR_CMD "Undo Global Graceful Restart command\n"
 465 #define GR "Global Graceful Restart - GR Mode\n"
 466 #define GR_DISABLE "Global Graceful Restart - Disable Mode\n"
 467 #define NO_GR_DISABLE "Undo Global Graceful Restart - Disable Mode\n"
 468 #define GR_DEBUG "Graceful Restart - Enable Debug Logs\n"
 469 #define GR_SHOW "Graceful Restart - Show command for Global and all neighbor mode\n"
 470 #define GR_NEIGHBOR_CMD "Graceful Restart command for a neighbor\n"
 471 #define NO_GR_NEIGHBOR_CMD "Undo Graceful Restart command for a neighbor\n"
 472 #define GR_NEIGHBOR_DISABLE_CMD "Graceful Restart Disable command for a neighbor\n"
 473 #define NO_GR_NEIGHBOR_DISABLE_CMD "Undo Graceful Restart Disable command for a neighbor\n"
 474 #define GR_NEIGHBOR_HELPER_CMD "Graceful Restart Helper command for a neighbor\n"
 475 #define NO_GR_NEIGHBOR_HELPER_CMD "Undo Graceful Restart Helper command for a neighbor\n"
 476
 477 /* EVPN help Strings */
 478 #define EVPN_RT_HELP_STR "EVPN route information\n"
 479 #define EVPN_RT_DIST_HELP_STR "Route Distinguisher\n"
 480 #define EVPN_ASN_IP_HELP_STR "ASN:XX or A.B.C.D:XX\n"
 481 #define EVPN_TYPE_HELP_STR "Specify Route type\n"
 482 #define EVPN_TYPE_1_HELP_STR "EAD (Type-1) route\n"
 483 #define EVPN_TYPE_2_HELP_STR "MAC-IP (Type-2) route\n"
 484 #define EVPN_TYPE_3_HELP_STR "Multicast (Type-3) route\n"
 485 #define EVPN_TYPE_4_HELP_STR "Ethernet Segment (Type-4) route\n"
 486 #define EVPN_TYPE_5_HELP_STR "Prefix (Type-5) route\n"
 487 #define EVPN_TYPE_ALL_LIST "<ead|1|macip|2|multicast|3|es|4|prefix|5>"
 488 #define EVPN_TYPE_ALL_LIST_HELP_STR                                            \
 489         EVPN_TYPE_1_HELP_STR EVPN_TYPE_1_HELP_STR                              \
 490         EVPN_TYPE_2_HELP_STR EVPN_TYPE_2_HELP_STR                              \
 491         EVPN_TYPE_3_HELP_STR EVPN_TYPE_3_HELP_STR                              \
 492         EVPN_TYPE_4_HELP_STR EVPN_TYPE_4_HELP_STR                              \
 493         EVPN_TYPE_5_HELP_STR EVPN_TYPE_5_HELP_STR
 494
 495 /* Describing roles */
 496 #define ROLE_STR                                                               \
 497         "Providing transit\nRoute server\nRS client\nUsing transit\nPublic/private peering\n"
 498
 499 /* BFD protocol integration strings. */
 500 #define BFD_INTEGRATION_STR "BFD monitoring\n"
 501 #define BFD_INTEGRATION_MULTI_HOP_STR "Use BFD multi hop session\n"
 502 #define BFD_INTEGRATION_SOURCE_STR "Use source for BFD session\n"
 503 #define BFD_INTEGRATION_SOURCEV4_STR "Use IPv4 source for BFD session\n"
 504 #define BFD_INTEGRATION_SOURCEV6_STR "Use IPv4 source for BFD session\n"
 505
 506 /* Prototypes. */
 507 extern void install_node(struct cmd_node *node);
 508 extern void install_default(enum node_type);
 509
 510 struct xref_install_element {
 511         struct xref xref;
 512
 513         const struct cmd_element *cmd_element;
 514         enum node_type node_type;
 515 };
 516
 517 #define install_element(node_type_, cmd_element_) do {                         \
 518                 static const struct xref_install_element _xref                 \
 519                                 __attribute__((used)) = {                      \
 520                         .xref = XREF_INIT(XREFT_INSTALL_ELEMENT, NULL,         \
 521                                           __func__),                           \
 522                         .cmd_element = cmd_element_,                           \
 523                         .node_type = node_type_,                               \
 524                 };                                                             \
 525                 XREF_LINK(_xref.xref);                                         \
 526                 _install_element(node_type_, cmd_element_);                    \
 527         } while (0)
 528
 529 extern void _install_element(enum node_type, const struct cmd_element *);
 530
 531 /* known issue with uninstall_element:  changes to cmd_token->attr (i.e.
 532  * deprecated/hidden) are not reversed. */
 533 extern void uninstall_element(enum node_type, const struct cmd_element *);
 534
 535 /* construct CLI tree only when entering nodes */
 536 extern void cmd_defer_tree(bool val);
 537
 538 /* finish CLI tree for node when above is true (noop otherwise) */
 539 extern void cmd_finalize_node(struct cmd_node *node);
 540
 541 /* Concatenates argv[shift] through argv[argc-1] into a single NUL-terminated
 542    string with a space between each element (allocated using
 543    XMALLOC(MTYPE_TMP)).  Returns NULL if shift >= argc. */
 544 extern char *argv_concat(struct cmd_token **argv, int argc, int shift);
 545
 546 /*
 547  * It is preferred that you set the index initial value
 548  * to a 0.  This way in the future if you modify the
 549  * cli then there is no need to modify the initial
 550  * value of the index
 551  */
 552 extern int argv_find(struct cmd_token **argv, int argc, const char *text,
 553                      int *index);
 554
 555 extern vector cmd_make_strvec(const char *);
 556 extern void cmd_free_strvec(vector);
 557 extern vector cmd_describe_command(vector, struct vty *, int *status);
 558 extern char **cmd_complete_command(vector, struct vty *, int *status);
 559 extern const char *cmd_prompt(enum node_type);
 560 extern int command_config_read_one_line(struct vty *vty,
 561                                         const struct cmd_element **,
 562                                         uint32_t line_num, int use_config_node);
 563 extern int config_from_file(struct vty *, FILE *, unsigned int *line_num);
 564 extern enum node_type node_parent(enum node_type);
 565 /*
 566  * Execute command under the given vty context.
 567  *
 568  * vty
 569  *    The vty context to execute under.
 570  *
 571  * cmd
 572  *    The command string to execute.
 573  *
 574  * matched
 575  *    If non-null and a match was found, the address of the matched command is
 576  *    stored here. No action otherwise.
 577  *
 578  * vtysh
 579  *    Whether or not this is being called from vtysh. If this is nonzero,
 580  *    XXX: then what?
 581  *
 582  * Returns:
 583  *    XXX: what does it return
 584  */
 585 extern int cmd_execute(struct vty *vty, const char *cmd,
 586                        const struct cmd_element **matched, int vtysh);
 587 extern int cmd_execute_command(vector, struct vty *,
 588                                const struct cmd_element **, int);
 589 extern int cmd_execute_command_strict(vector, struct vty *,
 590                                       const struct cmd_element **);
 591 extern void cmd_init(int terminal);
 592 extern void cmd_init_config_callbacks(void (*start_config_cb)(void),
 593                                       void (*end_config_cb)(void));
 594 extern void cmd_terminate(void);
 595 extern void cmd_exit(struct vty *vty);
 596 extern int cmd_list_cmds(struct vty *vty, int do_permute);
 597 extern int cmd_find_cmds(struct vty *vty, struct cmd_token **argv, int argc);
 598
 599 extern int cmd_domainname_set(const char *domainname);
 600 extern int cmd_hostname_set(const char *hostname);
 601 extern const char *cmd_hostname_get(void);
 602 extern const char *cmd_domainname_get(void);
 603 extern const char *cmd_system_get(void);
 604 extern const char *cmd_release_get(void);
 605 extern const char *cmd_version_get(void);
 606 extern bool cmd_allow_reserved_ranges_get(void);
 607
 608 /* NOT safe for general use; call this only if DEV_BUILD! */
 609 extern void grammar_sandbox_init(void);
 610
 611 extern vector completions_to_vec(struct list *completions);
 612
 613 /* Export typical functions. */
 614 extern const char *host_config_get(void);
 615 extern void host_config_set(const char *);
 616
 617 extern void print_version(const char *);
 618
 619 extern int cmd_banner_motd_file(const char *);
 620 extern void cmd_banner_motd_line(const char *line);
 621
 622 struct cmd_variable_handler {
 623         const char *tokenname, *varname;
 624         void (*completions)(vector out, struct cmd_token *token);
 625 };
 626
 627 extern void cmd_variable_complete(struct cmd_token *token, const char *arg,
 628                                   vector comps);
 629 extern void
 630 cmd_variable_handler_register(const struct cmd_variable_handler *cvh);
 631 extern char *cmd_variable_comp2str(vector comps, unsigned short cols);
 632
 633 extern void command_setup_early_logging(const char *dest, const char *level);
 634
 635 /*
 636  * Allow a mechanism for `debug XXX` commands that live
 637  * under the lib directory to output their debug status
 638  */
 639 extern void cmd_show_lib_debugs(struct vty *vty);
 640
 641 #ifdef __cplusplus
 642 }
 643 #endif
 644
 645 #endif /* _ZEBRA_COMMAND_H */