/* * Zebra configuration command interface routine * Copyright (C) 1997, 98 Kunihiro Ishiguro * * This file is part of GNU Zebra. * * GNU Zebra is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2, or (at your * option) any later version. * * GNU Zebra is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GNU Zebra; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifndef _ZEBRA_COMMAND_H #define _ZEBRA_COMMAND_H #include "vector.h" #include "vty.h" #include "lib/route_types.h" /* Host configuration variable */ struct host { /* Host name of this router. */ char *name; /* Password for vty interface. */ char *password; char *password_encrypt; /* Enable password */ char *enable; char *enable_encrypt; /* System wide terminal lines. */ int lines; /* Log filename. */ char *logfile; /* config file name of this host */ char *config; /* Flags for services */ int advanced; int encrypt; /* Banner configuration. */ const char *motd; char *motdfile; }; /* There are some command levels which called from command node. */ enum node_type { AUTH_NODE, /* Authentication mode of vty interface. */ RESTRICTED_NODE, /* Restricted view mode */ VIEW_NODE, /* View node. Default mode of vty interface. */ AUTH_ENABLE_NODE, /* Authentication mode for change enable. */ ENABLE_NODE, /* Enable node. */ CONFIG_NODE, /* Config node. Default mode of config file. */ SERVICE_NODE, /* Service node. */ DEBUG_NODE, /* Debug node. */ VRF_DEBUG_NODE, /* Vrf Debug node. */ AAA_NODE, /* AAA node. */ KEYCHAIN_NODE, /* Key-chain node. */ KEYCHAIN_KEY_NODE, /* Key-chain key node. */ INTERFACE_NODE, /* Interface mode node. */ VRF_NODE, /* VRF mode node. */ ZEBRA_NODE, /* zebra connection node. */ TABLE_NODE, /* rtm_table selection node. */ RIP_NODE, /* RIP protocol mode node. */ RIPNG_NODE, /* RIPng protocol mode node. */ BGP_NODE, /* BGP protocol mode which includes BGP4+ */ BGP_VPNV4_NODE, /* BGP MPLS-VPN PE exchange. */ BGP_IPV4_NODE, /* BGP IPv4 unicast address family. */ BGP_IPV4M_NODE, /* BGP IPv4 multicast address family. */ BGP_IPV6_NODE, /* BGP IPv6 address family */ BGP_IPV6M_NODE, /* BGP IPv6 multicast address family. */ OSPF_NODE, /* OSPF protocol mode */ OSPF6_NODE, /* OSPF protocol for IPv6 mode */ ISIS_NODE, /* ISIS protocol mode */ MASC_NODE, /* MASC for multicast. */ IRDP_NODE, /* ICMP Router Discovery Protocol mode. */ IP_NODE, /* Static ip route node. */ ACCESS_NODE, /* Access list node. */ PREFIX_NODE, /* Prefix list node. */ ACCESS_IPV6_NODE, /* Access list node. */ PREFIX_IPV6_NODE, /* Prefix list node. */ AS_LIST_NODE, /* AS list node. */ COMMUNITY_LIST_NODE, /* Community list node. */ RMAP_NODE, /* Route map node. */ SMUX_NODE, /* SNMP configuration node. */ DUMP_NODE, /* Packet dump node. */ FORWARDING_NODE, /* IP forwarding node. */ PROTOCOL_NODE, /* protocol filtering node */ VTY_NODE, /* Vty node. */ }; /* Node which has some commands and prompt string and configuration function pointer . */ struct cmd_node { /* Node index. */ enum node_type node; /* Prompt character at vty interface. */ const char *prompt; /* Is this node's configuration goes to vtysh ? */ int vtysh; /* Node's configuration write function */ int (*func) (struct vty *); /* Vector of this node's command list. */ vector cmd_vector; }; enum { CMD_ATTR_DEPRECATED = 1, CMD_ATTR_HIDDEN, }; /* Structure of command element. */ struct cmd_element { const char *string; /* Command specification by string. */ int (*func) (struct cmd_element *, struct vty *, int, const char *[]); const char *doc; /* Documentation of this command. */ int daemon; /* Daemon to which this command belong. */ vector tokens; /* Vector of cmd_tokens */ u_char attr; /* Command attributes */ }; enum cmd_token_type { TOKEN_TERMINAL = 0, TOKEN_MULTIPLE, TOKEN_KEYWORD, }; /* Command description structure. */ struct cmd_token { enum cmd_token_type type; /* Used for type == MULTIPLE */ vector multiple; /* vector of cmd_token, type == FINAL */ /* Used for type == KEYWORD */ vector keyword; /* vector of vector of cmd_tokens */ /* Used for type == TERMINAL */ char *cmd; /* Command string. */ char *desc; /* Command's description. */ }; /* Return value of the commands. */ #define CMD_SUCCESS 0 #define CMD_WARNING 1 #define CMD_ERR_NO_MATCH 2 #define CMD_ERR_AMBIGUOUS 3 #define CMD_ERR_INCOMPLETE 4 #define CMD_ERR_EXEED_ARGC_MAX 5 #define CMD_ERR_NOTHING_TODO 6 #define CMD_COMPLETE_FULL_MATCH 7 #define CMD_COMPLETE_MATCH 8 #define CMD_COMPLETE_LIST_MATCH 9 #define CMD_SUCCESS_DAEMON 10 #define CMD_ERR_NO_FILE 11 /* Argc max counts. */ #define CMD_ARGC_MAX 25 /* Turn off these macros when uisng cpp with extract.pl */ #ifndef VTYSH_EXTRACT_PL /* helper defines for end-user DEFUN* macros */ #define DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attrs, dnum) \ struct cmd_element cmdname = \ { \ .string = cmdstr, \ .func = funcname, \ .doc = helpstr, \ .attr = attrs, \ .daemon = dnum, \ }; #define DEFUN_CMD_FUNC_DECL(funcname) \ static int funcname (struct cmd_element *, struct vty *, int, const char *[]); #define DEFUN_CMD_FUNC_TEXT(funcname) \ static int funcname \ (struct cmd_element *self __attribute__ ((unused)), \ struct vty *vty __attribute__ ((unused)), \ int argc __attribute__ ((unused)), \ const char *argv[] __attribute__ ((unused)) ) /* DEFUN for vty command interafce. Little bit hacky ;-). * * DEFUN(funcname, cmdname, cmdstr, helpstr) * * funcname * ======== * * Name of the function that will be defined. * * cmdname * ======= * * Name of the struct that will be defined for the command. * * cmdstr * ====== * * The cmdstr defines the command syntax. It is used by the vty subsystem * and vtysh to perform matching and completion in the cli. So you have to take * care to construct it adhering to the following grammar. The names used * for the production rules losely represent the names used in lib/command.c * * cmdstr = cmd_token , { " " , cmd_token } ; * * cmd_token = cmd_terminal * | cmd_multiple * | cmd_keyword ; * * cmd_terminal_fixed = fixed_string * | variable * | range * | ipv4 * | ipv4_prefix * | ipv6 * | ipv6_prefix ; * * cmd_terminal = cmd_terminal_fixed * | option * | vararg ; * * multiple_part = cmd_terminal_fixed ; * cmd_multiple = "(" , multiple_part , ( "|" | { "|" , multiple_part } ) , ")" ; * * keyword_part = fixed_string , { " " , ( cmd_terminal_fixed | cmd_multiple ) } ; * cmd_keyword = "{" , keyword_part , { "|" , keyword_part } , "}" ; * * lowercase = "a" | ... | "z" ; * uppercase = "A" | ... | "Z" ; * digit = "0" | ... | "9" ; * number = digit , { digit } ; * * fixed_string = (lowercase | digit) , { lowercase | digit | uppercase | "-" | "_" } ; * variable = uppercase , { uppercase | "_" } ; * range = "<" , number , "-" , number , ">" ; * ipv4 = "A.B.C.D" ; * ipv4_prefix = "A.B.C.D/M" ; * ipv6 = "X:X::X:X" ; * ipv6_prefix = "X:X::X:X/M" ; * option = "[" , variable , "]" ; * vararg = "." , variable ; * * To put that all in a textual description: A cmdstr is a sequence of tokens, * separated by spaces. * * Terminal Tokens: * * A very simple cmdstring would be something like: "show ip bgp". It consists * of three Terminal Tokens, each containing a fixed string. When this command * is called, no arguments will be passed down to the function implementing it, * as it only consists of fixed strings. * * Apart from fixed strings, Terminal Tokens can also contain variables: * An example would be "show ip bgp A.B.C.D". This command expects an IPv4 * as argument. As this is a variable, the IP address entered by the user will * be passed down as an argument. Apart from two exceptions, the other options * for Terminal Tokens behave exactly as we just discussed and only make a * difference for the CLI. The two exceptions will be discussed in the next * paragraphs. * * A Terminal Token can contain a so called option match. This is a simple * string variable that the user may omit. An example would be: * "show interface [IFNAME]". If the user calls this without an interface as * argument, no arguments will be passed down to the function implementing * this command. Otherwise, the interface name will be provided to the function * as a regular argument. * Also, a Terminal Token can contain a so called vararg. This is used e.g. in * "show ip bgp regexp .LINE". The last token is a vararg match and will * consume all the arguments the user inputs on the command line and append * those to the list of arguments passed down to the function implementing this * command. (Therefore, it doesn't make much sense to have any tokens after a * vararg because the vararg will already consume all the words the user entered * in the CLI) * * Multiple Tokens: * * The Multiple Token type can be used if there are multiple possibilities what * arguments may be used for a command, but it should map to the same function * nonetheless. An example would be "ip route A.B.C.D/M (reject|blackhole)" * In that case both "reject" and "blackhole" would be acceptable as last * arguments. The words matched by Multiple Tokens are always added to the * argument list, even if they are matched by fixed strings. Such a Multiple * Token can contain almost any type of token that would also be acceptable * for a Terminal Token, the exception are optional variables and varag. * * There is one special case that is used in some places of Quagga that should be * pointed out here shortly. An example would be "password (8|) WORD". This * construct is used to have fixed strings communicated as arguments. (The "8" * will be passed down as an argument in this case) It does not mean that * the "8" is optional. Another historic and possibly surprising property of * this construct is that it consumes two parts of helpstr. (Help * strings will be explained later) * * Keyword Tokens: * * There are commands that take a lot of different and possibly optional arguments. * An example from ospf would be the "default-information originate" command. This * command takes a lot of optional arguments that may be provided in any order. * To accomodate such commands, the Keyword Token has been implemented. * Using the keyword token, the "default-information originate" command and all * its possible options can be represented using this single cmdstr: * "default-information originate \ * {always|metric <0-16777214>|metric-type (1|2)|route-map WORD}" * * Keywords always start with a fixed string and may be followed by arguments. * Except optional variables and vararg, everything is permitted here. * * For the special case of a keyword without arguments, either NULL or the * keyword itself will be pushed as an argument, depending on whether the * keyword is present. * For the other keywords, arguments will be only pushed for * variables/Multiple Tokens. If the keyword is not present, the arguments that * would have been pushed will be substituted by NULL. * * A few examples: * "default information originate metric-type 1 metric 1000" * would yield the following arguments: * { NULL, "1000", "1", NULL } * * "default information originate always route-map RMAP-DEFAULT" * would yield the following arguments: * { "always", NULL, NULL, "RMAP-DEFAULT" } * * helpstr * ======= * * The helpstr is used to show a short explantion for the commands that * are available when the user presses '?' on the CLI. It is the concatenation * of the helpstrings for all the tokens that make up the command. * * There should be one helpstring for each token in the cmdstr except those * containing other tokens, like Multiple or Keyword Tokens. For those, there * will only be the helpstrings of the contained tokens. * * The individual helpstrings are expected to be in the same order as their * respective Tokens appear in the cmdstr. They should each be terminated with * a linefeed. The last helpstring should be terminated with a linefeed as well. * * Care should also be taken to avoid having similar tokens with different * helpstrings. Imagine e.g. the commands "show ip ospf" and "show ip bgp". * they both contain a helpstring for "show", but only one will be displayed * when the user enters "sh?". If those two helpstrings differ, it is not * defined which one will be shown and the behavior is therefore unpredictable. */ #define DEFUN(funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_FUNC_DECL(funcname) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0) \ DEFUN_CMD_FUNC_TEXT(funcname) #define DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \ DEFUN_CMD_FUNC_DECL(funcname) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0) \ DEFUN_CMD_FUNC_TEXT(funcname) #define DEFUN_HIDDEN(funcname, cmdname, cmdstr, helpstr) \ DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN) #define DEFUN_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \ DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED) \ /* DEFUN_NOSH for commands that vtysh should ignore */ #define DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr) \ DEFUN(funcname, cmdname, cmdstr, helpstr) /* DEFSH for vtysh. */ #define DEFSH(daemon, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, 0, daemon) \ #define DEFSH_HIDDEN(daemon, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, daemon) \ /* DEFUN + DEFSH */ #define DEFUNSH(daemon, funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_FUNC_DECL(funcname) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon) \ DEFUN_CMD_FUNC_TEXT(funcname) /* DEFUN + DEFSH with attributes */ #define DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, attr) \ DEFUN_CMD_FUNC_DECL(funcname) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, daemon) \ DEFUN_CMD_FUNC_TEXT(funcname) #define DEFUNSH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \ DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN) #define DEFUNSH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \ DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED) /* ALIAS macro which define existing command's alias. */ #define ALIAS(funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0) #define ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0) #define ALIAS_HIDDEN(funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, 0) #define ALIAS_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, 0) #define ALIAS_SH(daemon, funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon) #define ALIAS_SH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, daemon) #define ALIAS_SH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, daemon) #endif /* VTYSH_EXTRACT_PL */ /* Some macroes */ /* * Sometimes #defines create maximum values that * need to have strings created from them that * allow the parser to match against them. * These macros allow that. */ #define CMD_CREATE_STR(s) CMD_CREATE_STR_HELPER(s) #define CMD_CREATE_STR_HELPER(s) #s #define CMD_RANGE_STR(a,s) "<" CMD_CREATE_STR(a) "-" CMD_CREATE_STR(s) ">" #define CMD_OPTION(S) ((S[0]) == '[') #define CMD_VARIABLE(S) (((S[0]) >= 'A' && (S[0]) <= 'Z') || ((S[0]) == '<')) #define CMD_VARARG(S) ((S[0]) == '.') #define CMD_RANGE(S) ((S[0] == '<')) #define CMD_IPV4(S) ((strcmp ((S), "A.B.C.D") == 0)) #define CMD_IPV4_PREFIX(S) ((strcmp ((S), "A.B.C.D/M") == 0)) #define CMD_IPV6(S) ((strcmp ((S), "X:X::X:X") == 0)) #define CMD_IPV6_PREFIX(S) ((strcmp ((S), "X:X::X:X/M") == 0)) /* Common descriptions. */ #define SHOW_STR "Show running system information\n" #define IP_STR "IP information\n" #define IPV6_STR "IPv6 information\n" #define NO_STR "Negate a command or set its defaults\n" #define REDIST_STR "Redistribute information from another routing protocol\n" #define CLEAR_STR "Reset functions\n" #define RIP_STR "RIP information\n" #define BGP_STR "BGP information\n" #define BGP_SOFT_STR "Soft reconfig inbound and outbound updates\n" #define BGP_SOFT_IN_STR "Send route-refresh unless using 'soft-reconfiguration inbound'\n" #define BGP_SOFT_OUT_STR "Resend all outbound updates\n" #define BGP_SOFT_RSCLIENT_RIB_STR "Soft reconfig for rsclient RIB\n" #define OSPF_STR "OSPF information\n" #define NEIGHBOR_STR "Specify neighbor router\n" #define DEBUG_STR "Debugging functions (see also 'undebug')\n" #define UNDEBUG_STR "Disable debugging functions (see also 'debug')\n" #define ROUTER_STR "Enable a routing process\n" #define AS_STR "AS number\n" #define MBGP_STR "MBGP information\n" #define MATCH_STR "Match values from routing table\n" #define SET_STR "Set values in destination routing protocol\n" #define OUT_STR "Filter outgoing routing updates\n" #define IN_STR "Filter incoming routing updates\n" #define V4NOTATION_STR "specify by IPv4 address notation(e.g. 0.0.0.0)\n" #define OSPF6_NUMBER_STR "Specify by number\n" #define INTERFACE_STR "Interface infomation\n" #define IFNAME_STR "Interface name(e.g. ep0)\n" #define IP6_STR "IPv6 Information\n" #define OSPF6_STR "Open Shortest Path First (OSPF) for IPv6\n" #define OSPF6_ROUTER_STR "Enable a routing process\n" #define OSPF6_INSTANCE_STR "<1-65535> Instance ID\n" #define SECONDS_STR "<1-65535> Seconds\n" #define ROUTE_STR "Routing Table\n" #define PREFIX_LIST_STR "Build a prefix list\n" #define OSPF6_DUMP_TYPE_LIST \ "(neighbor|interface|area|lsa|zebra|config|dbex|spf|route|lsdb|redistribute|hook|asbr|prefix|abr)" #define ISIS_STR "IS-IS information\n" #define AREA_TAG_STR "[area tag]\n" #define COMMUNITY_AANN_STR "Community number where AA and NN are <0-65535>\n" #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" #define CONF_BACKUP_EXT ".sav" /* IPv4 only machine should not accept IPv6 address for peer's IP address. So we replace VTY command string like below. */ #ifdef HAVE_IPV6 #define NEIGHBOR_CMD "neighbor (A.B.C.D|X:X::X:X) " #define NO_NEIGHBOR_CMD "no neighbor (A.B.C.D|X:X::X:X) " #define NEIGHBOR_ADDR_STR "Neighbor address\nIPv6 address\n" #define NEIGHBOR_CMD2 "neighbor (A.B.C.D|X:X::X:X|WORD) " #define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|X:X::X:X|WORD) " #define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor IPv6 address\nInterface name or neighbor tag\n" #define NEIGHBOR_ADDR_STR3 "Neighbor address\nIPv6 address\nInterface name\n" #else #define NEIGHBOR_CMD "neighbor A.B.C.D " #define NO_NEIGHBOR_CMD "no neighbor A.B.C.D " #define NEIGHBOR_ADDR_STR "Neighbor address\n" #define NEIGHBOR_CMD2 "neighbor (A.B.C.D|WORD) " #define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|WORD) " #define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor tag\n" #endif /* HAVE_IPV6 */ /* Dynamic neighbor (listen range) configuration */ #ifdef HAVE_IPV6 #define LISTEN_RANGE_CMD "bgp listen range (A.B.C.D/M|X:X::X:X/M) " #define LISTEN_RANGE_ADDR_STR "Neighbor address\nNeighbor IPv6 address\n" #else #define LISTEN_RANGE_CMD "bgp listen range A.B.C.D/M " #define LISTEN_RANGE_ADDR_STR "Neighbor address\n" #endif /* HAVE_IPV6 */ /* Prototypes. */ extern void install_node (struct cmd_node *, int (*) (struct vty *)); extern void install_default (enum node_type); extern void install_element (enum node_type, struct cmd_element *); /* Concatenates argv[shift] through argv[argc-1] into a single NUL-terminated string with a space between each element (allocated using XMALLOC(MTYPE_TMP)). Returns NULL if shift >= argc. */ extern char *argv_concat (const char **argv, int argc, int shift); extern vector cmd_make_strvec (const char *); extern void cmd_free_strvec (vector); extern vector cmd_describe_command (vector, struct vty *, int *status); extern char **cmd_complete_command (vector, struct vty *, int *status); extern const char *cmd_prompt (enum node_type); extern int command_config_read_one_line (struct vty *vty, struct cmd_element **, int use_config_node); extern int config_from_file (struct vty *, FILE *, unsigned int *line_num); extern enum node_type node_parent (enum node_type); extern int cmd_execute_command (vector, struct vty *, struct cmd_element **, int); extern int cmd_execute_command_strict (vector, struct vty *, struct cmd_element **); extern void cmd_init (int); extern void cmd_terminate (void); /* Export typical functions. */ extern struct cmd_element config_end_cmd; extern struct cmd_element config_exit_cmd; extern struct cmd_element config_quit_cmd; extern struct cmd_element config_help_cmd; extern struct cmd_element config_list_cmd; extern char *host_config_file (void); extern void host_config_set (const char *); extern void print_version (const char *); extern int cmd_banner_motd_file (const char *); /* struct host global, ick */ extern struct host host; /* "" global */ extern char *command_cr; #endif /* _ZEBRA_COMMAND_H */