proto/rip/config.Y

   1 /*
   2  *      BIRD -- RIP Configuration
   3  *
   4  *      (c) 1998--1999 Pavel Machek <pavel@ucw.cz>
   5  *      (c) 2004--2013 Ondrej Filip <feela@network.cz>
   6  *      (c) 2009--2015 Ondrej Zajicek <santiago@crfreenet.org>
   7  *      (c) 2009--2015 CZ.NIC z.s.p.o.
   8  *
   9  *      Can be freely distributed and used under the terms of the GNU GPL.
  10  */
  11
  12 CF_HDR
  13
  14 #include "proto/rip/rip.h"
  15 #include "nest/iface.h"
  16
  17 CF_DEFINES
  18
  19 #define RIP_CFG ((struct rip_config *) this_proto)
  20 #define RIP_IFACE ((struct rip_iface_config *) this_ipatt)
  21
  22 static inline int rip_cfg_is_v2(void) { return RIP_CFG->rip2; }
  23 static inline int rip_cfg_is_ng(void) { return ! RIP_CFG->rip2; }
  24
  25 static inline void
  26 rip_check_auth(void)
  27 {
  28   if (rip_cfg_is_ng())
  29     cf_error("Authentication not supported in RIPng");
  30 }
  31
  32
  33 CF_DECLS
  34
  35 CF_KEYWORDS(RIP, NG, ECMP, LIMIT, WEIGHT, INFINITY, METRIC, UPDATE, TIMEOUT,
  36             GARBAGE, PORT, ADDRESS, MODE, BROADCAST, MULTICAST, PASSIVE,
  37             VERSION, SPLIT, HORIZON, POISON, REVERSE, CHECK, ZERO, TIME, BFD,
  38             AUTHENTICATION, NONE, PLAINTEXT, CRYPTOGRAPHIC, MD5, TTL, SECURITY,
  39             RX, TX, BUFFER, LENGTH, PRIORITY, ONLY, LINK, RIP_METRIC, RIP_TAG)
  40
  41 %type <i> rip_variant rip_auth
  42
  43 CF_GRAMMAR
  44
  45 proto: rip_proto ;
  46
  47 rip_variant:
  48    RIP    { $$ = 1; }
  49  | RIP NG { $$ = 0; }
  50  ;
  51
  52 rip_proto_start: proto_start rip_variant
  53 {
  54   this_proto = proto_config_new(&proto_rip, $1);
  55   this_proto->net_type = $2 ? NET_IP4 : NET_IP6;
  56
  57   init_list(&RIP_CFG->patt_list);
  58   RIP_CFG->rip2 = $2;
  59   RIP_CFG->ecmp = rt_default_ecmp;
  60   RIP_CFG->infinity = RIP_DEFAULT_INFINITY;
  61   RIP_CFG->min_timeout_time = 60 S_;
  62   RIP_CFG->max_garbage_time = 60 S_;
  63 };
  64
  65 rip_proto_item:
  66    proto_item
  67  | proto_channel
  68  | ECMP bool            { RIP_CFG->ecmp = $2 ? RIP_DEFAULT_ECMP_LIMIT : 0; }
  69  | ECMP bool LIMIT expr { RIP_CFG->ecmp = $2 ? $4 : 0; }
  70  | INFINITY expr        { RIP_CFG->infinity = $2; }
  71  | INTERFACE rip_iface
  72  ;
  73
  74 rip_proto_opts:
  75    /* empty */
  76  | rip_proto_opts rip_proto_item ';'
  77  ;
  78
  79 rip_proto:
  80    rip_proto_start proto_name '{' rip_proto_opts '}';
  81
  82
  83 rip_iface_start:
  84 {
  85   this_ipatt = cfg_allocz(sizeof(struct rip_iface_config));
  86   add_tail(&RIP_CFG->patt_list, NODE this_ipatt);
  87   init_list(&this_ipatt->ipn_list);
  88   reset_passwords();
  89
  90   RIP_IFACE->metric = 1;
  91   RIP_IFACE->port = rip_cfg_is_v2() ? RIP_PORT : RIP_NG_PORT;
  92   RIP_IFACE->version = rip_cfg_is_v2() ? RIP_V2 : RIP_V1;
  93   RIP_IFACE->split_horizon = 1;
  94   RIP_IFACE->poison_reverse = 1;
  95   RIP_IFACE->check_zero = 1;
  96   RIP_IFACE->check_link = 1;
  97   RIP_IFACE->ttl_security = rip_cfg_is_v2() ? 0 : 1;
  98   RIP_IFACE->rx_buffer = rip_cfg_is_v2() ? RIP_MAX_PKT_LENGTH : 0;
  99   RIP_IFACE->tx_length = rip_cfg_is_v2() ? RIP_MAX_PKT_LENGTH : 0;
 100   RIP_IFACE->tx_tos = IP_PREC_INTERNET_CONTROL;
 101   RIP_IFACE->tx_priority = sk_priority_control;
 102   RIP_IFACE->update_time = RIP_DEFAULT_UPDATE_TIME;
 103   RIP_IFACE->timeout_time = RIP_DEFAULT_TIMEOUT_TIME;
 104   RIP_IFACE->garbage_time = RIP_DEFAULT_GARBAGE_TIME;
 105 };
 106
 107 rip_iface_finish:
 108 {
 109   /* Default mode is broadcast for RIPv1, multicast for RIPv2 and RIPng */
 110   if (!RIP_IFACE->mode)
 111     RIP_IFACE->mode = (rip_cfg_is_v2() && (RIP_IFACE->version == RIP_V1)) ?
 112       RIP_IM_BROADCAST : RIP_IM_MULTICAST;
 113
 114   RIP_IFACE->passwords = get_passwords();
 115
 116   if (!RIP_IFACE->auth_type != !RIP_IFACE->passwords)
 117     log(L_WARN "Authentication and password options should be used together");
 118
 119   if (RIP_IFACE->passwords)
 120   {
 121     struct password_item *pass;
 122     WALK_LIST(pass, *RIP_IFACE->passwords)
 123     {
 124       if (pass->alg && (RIP_IFACE->auth_type != RIP_AUTH_CRYPTO))
 125         cf_error("Password algorithm option requires cryptographic authentication");
 126
 127       /* Set default crypto algorithm (MD5) */
 128       if (!pass->alg && (RIP_IFACE->auth_type == RIP_AUTH_CRYPTO))
 129         pass->alg = ALG_MD5;
 130     }
 131   }
 132
 133   RIP_CFG->min_timeout_time = MIN_(RIP_CFG->min_timeout_time, RIP_IFACE->timeout_time);
 134   RIP_CFG->max_garbage_time = MAX_(RIP_CFG->max_garbage_time, RIP_IFACE->garbage_time);
 135 };
 136
 137 rip_iface_item:
 138    METRIC expr          { RIP_IFACE->metric = $2; if (($2<1) || ($2>255)) cf_error("Metric must be in range 1-255"); }
 139  | MODE MULTICAST       { RIP_IFACE->mode = RIP_IM_MULTICAST; }
 140  | MODE BROADCAST       { RIP_IFACE->mode = RIP_IM_BROADCAST; if (rip_cfg_is_ng()) cf_error("Broadcast not supported in RIPng"); }
 141  | PASSIVE bool         { RIP_IFACE->passive = $2; }
 142  | ADDRESS ipa          { RIP_IFACE->address = $2; if (ipa_is_ip4($2) != rip_cfg_is_v2()) cf_error("IP address version mismatch"); }
 143  | PORT expr            { RIP_IFACE->port = $2; if (($2<1) || ($2>65535)) cf_error("Invalid port number"); }
 144  | VERSION expr         { RIP_IFACE->version = $2;
 145                           if (rip_cfg_is_ng()) cf_error("Version not supported in RIPng");
 146                           if (($2 != RIP_V1) && ($2 != RIP_V2)) cf_error("Unsupported version");
 147                         }
 148  | VERSION ONLY bool    { RIP_IFACE->version_only = $3; }
 149  | SPLIT HORIZON bool   { RIP_IFACE->split_horizon = $3; }
 150  | POISON REVERSE bool  { RIP_IFACE->poison_reverse = $3; }
 151  | CHECK ZERO bool      { RIP_IFACE->check_zero = $3; }
 152  | UPDATE TIME expr     { RIP_IFACE->update_time = $3 S_; if ($3<=0) cf_error("Update time must be positive"); }
 153  | TIMEOUT TIME expr    { RIP_IFACE->timeout_time = $3 S_; if ($3<=0) cf_error("Timeout time must be positive"); }
 154  | GARBAGE TIME expr    { RIP_IFACE->garbage_time = $3 S_; if ($3<=0) cf_error("Garbage time must be positive"); }
 155  | ECMP WEIGHT expr     { RIP_IFACE->ecmp_weight = $3 - 1; if (($3<1) || ($3>256)) cf_error("ECMP weight must be in range 1-256"); }
 156  | RX BUFFER expr       { RIP_IFACE->rx_buffer = $3; if (($3<256) || ($3>65535)) cf_error("RX length must be in range 256-65535"); }
 157  | TX LENGTH expr       { RIP_IFACE->tx_length = $3; if (($3<256) || ($3>65535)) cf_error("TX length must be in range 256-65535"); }
 158  | TX tos               { RIP_IFACE->tx_tos = $2; }
 159  | TX PRIORITY expr     { RIP_IFACE->tx_priority = $3; }
 160  | TTL SECURITY bool    { RIP_IFACE->ttl_security = $3; }
 161  | TTL SECURITY TX ONLY { RIP_IFACE->ttl_security = 2; }
 162  | CHECK LINK bool      { RIP_IFACE->check_link = $3; }
 163  | BFD bool             { RIP_IFACE->bfd = $2; cf_check_bfd($2); }
 164  | AUTHENTICATION rip_auth { RIP_IFACE->auth_type = $2; if ($2) rip_check_auth(); }
 165  | password_list        { rip_check_auth(); }
 166 ;
 167
 168 rip_auth:
 169    NONE                 { $$ = RIP_AUTH_NONE; }
 170  | PLAINTEXT            { $$ = RIP_AUTH_PLAIN; }
 171  | CRYPTOGRAPHIC        { $$ = RIP_AUTH_CRYPTO; }
 172  | MD5                  { $$ = RIP_AUTH_CRYPTO; }       /* For backward compatibility */
 173  ;
 174
 175 rip_iface_opts:
 176    /* empty */
 177  | rip_iface_opts rip_iface_item ';'
 178  ;
 179
 180 rip_iface_opt_list:
 181    /* empty */
 182  | '{' rip_iface_opts '}'
 183  ;
 184
 185 rip_iface:
 186   rip_iface_start iface_patt_list_nopx rip_iface_opt_list rip_iface_finish;
 187
 188
 189 dynamic_attr: RIP_METRIC { $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_RIP_METRIC); } ;
 190 dynamic_attr: RIP_TAG { $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_RIP_TAG); } ;
 191
 192 CF_CLI_HELP(SHOW RIP, ..., [[Show information about RIP protocol]]);
 193
 194 CF_CLI(SHOW RIP INTERFACES, optproto opttext, [<name>] [\"<interface>\"], [[Show information about RIP interfaces]])
 195 { rip_show_interfaces(proto_get_named($4, &proto_rip), $5); };
 196
 197 CF_CLI(SHOW RIP NEIGHBORS, optproto opttext, [<name>] [\"<interface>\"], [[Show information about RIP neighbors]])
 198 { rip_show_neighbors(proto_get_named($4, &proto_rip), $5); };
 199
 200
 201 CF_CODE
 202
 203 CF_END