ripngd/ripng_routemap.c

   1 /* RIPng routemap.
   2  * Copyright (C) 1999 Kunihiro Ishiguro
   3  *
   4  * This file is part of GNU Zebra.
   5  *
   6  * GNU Zebra is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2, or (at your option) any
   9  * later version.
  10  *
  11  * GNU Zebra is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
  18  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19  * 02111-1307, USA.
  20  */
  21
  22 #include <zebra.h>
  23
  24 #include "if.h"
  25 #include "memory.h"
  26 #include "prefix.h"
  27 #include "routemap.h"
  28 #include "command.h"
  29
  30 #include "ripngd/ripngd.h"
  31 \f
  32 #if 0
  33 /* `match interface IFNAME' */
  34 route_map_result_t
  35 route_match_interface (void *rule, struct prefix *prefix,
  36                        route_map_object_t type, void *object)
  37 {
  38   struct ripng_info *rinfo;
  39   struct interface *ifp;
  40   char *ifname;
  41
  42   if (type == ROUTE_MAP_RIPNG)
  43     {
  44       ifname = rule;
  45       ifp = if_lookup_by_name(ifname);
  46
  47       if (!ifp)
  48         return RM_NOMATCH;
  49
  50       rinfo = object;
  51
  52       if (rinfo->ifindex == ifp->ifindex)
  53         return RM_MATCH;
  54       else
  55         return RM_NOMATCH;
  56     }
  57   return RM_NOMATCH;
  58 }
  59
  60 void *
  61 route_match_interface_compile (char *arg)
  62 {
  63   return XSTRDUP (MTYPE_ROUTE_MAP_COMPILED, arg);
  64 }
  65
  66 void
  67 route_match_interface_free (void *rule)
  68 {
  69   XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
  70 }
  71
  72 struct route_map_rule_cmd route_match_interface_cmd =
  73 {
  74   "interface",
  75   route_match_interface,
  76   route_match_interface_compile,
  77   route_match_interface_free
  78 };
  79 #endif /* 0 */
  80 \f
  81 struct rip_metric_modifier
  82 {
  83   enum
  84   {
  85     metric_increment,
  86     metric_decrement,
  87     metric_absolute
  88   } type;
  89
  90   u_char metric;
  91 };
  92
  93 route_map_result_t
  94 route_set_metric (void *rule, struct prefix *prefix,
  95                   route_map_object_t type, void *object)
  96 {
  97   if (type == RMAP_RIPNG)
  98     {
  99       struct rip_metric_modifier *mod;
 100       struct ripng_info *rinfo;
 101
 102       mod = rule;
 103       rinfo = object;
 104
 105       if (mod->type == metric_increment)
 106         rinfo->metric += mod->metric;
 107       else if (mod->type == metric_decrement)
 108         rinfo->metric -= mod->metric;
 109       else if (mod->type == metric_absolute)
 110         rinfo->metric = mod->metric;
 111
 112       if (rinfo->metric < 1)
 113         rinfo->metric = 1;
 114       if (rinfo->metric > RIPNG_METRIC_INFINITY)
 115         rinfo->metric = RIPNG_METRIC_INFINITY;
 116
 117       rinfo->metric_set = 1;
 118     }
 119   return RMAP_OKAY;
 120 }
 121
 122 void *
 123 route_set_metric_compile (char *arg)
 124 {
 125   int len;
 126   char *pnt;
 127   int type;
 128   long metric;
 129   char *endptr = NULL;
 130   struct rip_metric_modifier *mod;
 131
 132   len = strlen (arg);
 133   pnt = arg;
 134
 135   if (len == 0)
 136     return NULL;
 137
 138   /* Examine first character. */
 139   if (arg[0] == '+')
 140     {
 141       type = metric_increment;
 142       pnt++;
 143     }
 144   else if (arg[0] == '-')
 145     {
 146       type = metric_decrement;
 147       pnt++;
 148     }
 149   else
 150     type = metric_absolute;
 151
 152   /* Check beginning with digit string. */
 153   if (*pnt < '0' || *pnt > '9')
 154     return NULL;
 155
 156   /* Convert string to integer. */
 157   metric = strtol (pnt, &endptr, 10);
 158
 159   if (metric == LONG_MAX || *endptr != '\0')
 160     return NULL;
 161   if (metric < 0 || metric > RIPNG_METRIC_INFINITY)
 162     return NULL;
 163
 164   mod = XMALLOC (MTYPE_ROUTE_MAP_COMPILED,
 165                  sizeof (struct rip_metric_modifier));
 166   mod->type = type;
 167   mod->metric = metric;
 168
 169   return mod;
 170 }
 171
 172 void
 173 route_set_metric_free (void *rule)
 174 {
 175   XFREE (MTYPE_ROUTE_MAP_COMPILED, rule);
 176 }
 177
 178 struct route_map_rule_cmd route_set_metric_cmd =
 179 {
 180   "metric",
 181   route_set_metric,
 182   route_set_metric_compile,
 183   route_set_metric_free,
 184 };
 185 \f
 186 int
 187 ripng_route_match_add (struct vty *vty, struct route_map_index *index,
 188                        char *command, char *arg)
 189 {
 190   int ret;
 191
 192   ret = route_map_add_match (index, command, arg);
 193   if (ret)
 194     {
 195       switch (ret)
 196         {
 197         case RMAP_RULE_MISSING:
 198           vty_out (vty, "Can't find rule.%s", VTY_NEWLINE);
 199           return CMD_WARNING;
 200           break;
 201         case RMAP_COMPILE_ERROR:
 202           vty_out (vty, "Argument is malformed.%s", VTY_NEWLINE);
 203           return CMD_WARNING;
 204           break;
 205         }
 206     }
 207   return CMD_SUCCESS;
 208 }
 209
 210 int
 211 ripng_route_match_delete (struct vty *vty, struct route_map_index *index,
 212                           char *command, char *arg)
 213 {
 214   int ret;
 215
 216   ret = route_map_delete_match (index, command, arg);
 217   if (ret)
 218     {
 219       switch (ret)
 220         {
 221         case RMAP_RULE_MISSING:
 222           vty_out (vty, "Can't find rule.%s", VTY_NEWLINE);
 223           return CMD_WARNING;
 224           break;
 225         case RMAP_COMPILE_ERROR:
 226           vty_out (vty, "Argument is malformed.%s", VTY_NEWLINE);
 227           return CMD_WARNING;
 228           break;
 229         }
 230     }
 231   return CMD_SUCCESS;
 232 }
 233
 234 int
 235 ripng_route_set_add (struct vty *vty, struct route_map_index *index,
 236                      char *command, char *arg)
 237 {
 238   int ret;
 239
 240   ret = route_map_add_set (index, command, arg);
 241   if (ret)
 242     {
 243       switch (ret)
 244         {
 245         case RMAP_RULE_MISSING:
 246           vty_out (vty, "Can't find rule.%s", VTY_NEWLINE);
 247           return CMD_WARNING;
 248           break;
 249         case RMAP_COMPILE_ERROR:
 250           vty_out (vty, "Argument is malformed.%s", VTY_NEWLINE);
 251           return CMD_WARNING;
 252           break;
 253         }
 254     }
 255   return CMD_SUCCESS;
 256 }
 257
 258 int
 259 ripng_route_set_delete (struct vty *vty, struct route_map_index *index,
 260                         char *command, char *arg)
 261 {
 262   int ret;
 263
 264   ret = route_map_delete_set (index, command, arg);
 265   if (ret)
 266     {
 267       switch (ret)
 268         {
 269         case RMAP_RULE_MISSING:
 270           vty_out (vty, "Can't find rule.%s", VTY_NEWLINE);
 271           return CMD_WARNING;
 272           break;
 273         case RMAP_COMPILE_ERROR:
 274           vty_out (vty, "Argument is malformed.%s", VTY_NEWLINE);
 275           return CMD_WARNING;
 276           break;
 277         }
 278     }
 279   return CMD_SUCCESS;
 280 }
 281 \f
 282 #if 0
 283 DEFUN (match_interface,
 284        match_interface_cmd,
 285        "match interface WORD",
 286        "Match value\n"
 287        "Interface\n"
 288        "Interface name\n")
 289 {
 290   return ripng_route_match_add (vty, vty->index, "interface", argv[0]);
 291 }
 292
 293 DEFUN (no_match_interface,
 294        no_match_interface_cmd,
 295        "no match interface WORD",
 296        NO_STR
 297        "Match value\n"
 298        "Interface\n"
 299        "Interface name\n")
 300 {
 301   return ripng_route_match_delete (vty, vty->index, "interface", argv[0]);
 302 }
 303 #endif /* 0 */
 304
 305 DEFUN (set_metric,
 306        set_metric_cmd,
 307        "set metric <0-4294967295>",
 308        "Set value\n"
 309        "Metric\n"
 310        "METRIC value\n")
 311 {
 312   return ripng_route_set_add (vty, vty->index, "metric", argv[0]);
 313 }
 314
 315 DEFUN (no_set_metric,
 316        no_set_metric_cmd,
 317        "no set metric <0-4294967295>",
 318        NO_STR
 319        "Set value\n"
 320        "Metric\n"
 321        "METRIC value\n")
 322 {
 323   return ripng_route_set_delete (vty, vty->index, "metric", argv[0]);
 324 }
 325
 326 void
 327 ripng_route_map_init ()
 328 {
 329   route_map_init ();
 330   route_map_init_vty ();
 331
 332   /* route_map_install_match (&route_match_interface_cmd); */
 333   route_map_install_set (&route_set_metric_cmd);
 334
 335   /*
 336   install_element (RMAP_NODE, &match_interface_cmd);
 337   install_element (RMAP_NODE, &no_match_interface_cmd);
 338   */
 339
 340   install_element (RMAP_NODE, &set_metric_cmd);
 341   install_element (RMAP_NODE, &no_set_metric_cmd);
 342 }