vtysh/vtysh_config.c

   1 /* Configuration generator.
   2    Copyright (C) 2000 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 #include <zebra.h>
  22
  23 #include "command.h"
  24 #include "linklist.h"
  25 #include "memory.h"
  26
  27 #include "vtysh/vtysh.h"
  28
  29 vector configvec;
  30
  31 extern int vtysh_writeconfig_integrated;
  32
  33 struct config
  34 {
  35   /* Configuration node name. */
  36   char *name;
  37
  38   /* Configuration string line. */
  39   struct list *line;
  40
  41   /* Configuration can be nest. */
  42   struct config *config;
  43
  44   /* Index of this config. */
  45   u_int32_t index;
  46 };
  47
  48 struct list *config_top;
  49
  50 int
  51 line_cmp (char *c1, char *c2)
  52 {
  53   return strcmp (c1, c2);
  54 }
  55
  56 void
  57 line_del (char *line)
  58 {
  59   XFREE (MTYPE_VTYSH_CONFIG_LINE, line);
  60 }
  61
  62 struct config *
  63 config_new ()
  64 {
  65   struct config *config;
  66   config = XCALLOC (MTYPE_VTYSH_CONFIG, sizeof (struct config));
  67   return config;
  68 }
  69
  70 int
  71 config_cmp (struct config *c1, struct config *c2)
  72 {
  73   return strcmp (c1->name, c2->name);
  74 }
  75
  76 void
  77 config_del (struct config* config)
  78 {
  79   list_delete (config->line);
  80   if (config->name)
  81     XFREE (MTYPE_VTYSH_CONFIG_LINE, config->name);
  82   XFREE (MTYPE_VTYSH_CONFIG, config);
  83 }
  84
  85 struct config *
  86 config_get (int index, const char *line)
  87 {
  88   struct config *config;
  89   struct config *config_loop;
  90   struct list *master;
  91   struct listnode *nn;
  92
  93   config = config_loop = NULL;
  94
  95   master = vector_lookup_ensure (configvec, index);
  96
  97   if (! master)
  98     {
  99       master = list_new ();
 100       master->del = (void (*) (void *))config_del;
 101       master->cmp = (int (*)(void *, void *)) config_cmp;
 102       vector_set_index (configvec, index, master);
 103     }
 104
 105   LIST_LOOP (master, config_loop, nn)
 106     {
 107       if (strcmp (config_loop->name, line) == 0)
 108         config = config_loop;
 109     }
 110
 111   if (! config)
 112     {
 113       config = config_new ();
 114       config->line = list_new ();
 115       config->line->del = (void (*) (void *))line_del;
 116       config->line->cmp = (int (*)(void *, void *)) line_cmp;
 117       config->name = XSTRDUP (MTYPE_VTYSH_CONFIG_LINE, line);
 118       config->index = index;
 119       listnode_add (master, config);
 120     }
 121   return config;
 122 }
 123
 124 void
 125 config_add_line (struct list *config, const char *line)
 126 {
 127   listnode_add (config, XSTRDUP (MTYPE_VTYSH_CONFIG_LINE, line));
 128 }
 129
 130 void
 131 config_add_line_uniq (struct list *config, const char *line)
 132 {
 133   struct listnode *nn;
 134   char *pnt;
 135
 136   LIST_LOOP (config, pnt, nn)
 137     {
 138       if (strcmp (pnt, line) == 0)
 139         return;
 140     }
 141   listnode_add_sort (config, XSTRDUP (MTYPE_VTYSH_CONFIG_LINE, line));
 142 }
 143
 144 void
 145 vtysh_config_parse_line (const char *line)
 146 {
 147   char c;
 148   static struct config *config = NULL;
 149
 150   if (! line)
 151     return;
 152
 153   c = line[0];
 154
 155   if (c == '\0')
 156     return;
 157
 158   /* printf ("[%s]\n", line); */
 159
 160   switch (c)
 161     {
 162     case '!':
 163     case '#':
 164       break;
 165     case ' ':
 166       /* Store line to current configuration. */
 167       if (config)
 168         {
 169           if (strncmp (line, " address-family vpnv4",
 170               strlen (" address-family vpnv4")) == 0)
 171             config = config_get (BGP_VPNV4_NODE, line);
 172           else if (strncmp (line, " address-family ipv4 multicast",
 173                    strlen (" address-family ipv4 multicast")) == 0)
 174             config = config_get (BGP_IPV4M_NODE, line);
 175           else if (strncmp (line, " address-family ipv6",
 176                    strlen (" address-family ipv6")) == 0)
 177             config = config_get (BGP_IPV6_NODE, line);
 178           else if (config->index == RMAP_NODE ||
 179                    config->index == INTERFACE_NODE ||
 180                    config->index == VTY_NODE)
 181             config_add_line_uniq (config->line, line);
 182           else
 183             config_add_line (config->line, line);
 184         }
 185       else
 186         config_add_line (config_top, line);
 187       break;
 188     default:
 189       if (strncmp (line, "interface", strlen ("interface")) == 0)
 190         config = config_get (INTERFACE_NODE, line);
 191       else if (strncmp (line, "router rip", strlen ("router rip")) == 0)
 192         config = config_get (RIP_NODE, line);
 193       else if (strncmp (line, "router ripng", strlen ("router ripng")) == 0)
 194         config = config_get (RIPNG_NODE, line);
 195       else if (strncmp (line, "router ospf", strlen ("router ospf")) == 0)
 196         config = config_get (OSPF_NODE, line);
 197       else if (strncmp (line, "router ospf6", strlen ("router ospf6")) == 0)
 198         config = config_get (OSPF6_NODE, line);
 199       else if (strncmp (line, "router bgp", strlen ("router bgp")) == 0)
 200         config = config_get (BGP_NODE, line);
 201       else if (strncmp (line, "router isis", strlen ("router isis")) == 0)
 202         config = config_get (ISIS_NODE, line);
 203       else if (strncmp (line, "router", strlen ("router")) == 0)
 204         config = config_get (BGP_NODE, line);
 205       else if (strncmp (line, "route-map", strlen ("route-map")) == 0)
 206         config = config_get (RMAP_NODE, line);
 207       else if (strncmp (line, "access-list", strlen ("access-list")) == 0)
 208         config = config_get (ACCESS_NODE, line);
 209       else if (strncmp (line, "ipv6 access-list",
 210                strlen ("ipv6 access-list")) == 0)
 211         config = config_get (ACCESS_IPV6_NODE, line);
 212       else if (strncmp (line, "ip prefix-list",
 213                strlen ("ip prefix-list")) == 0)
 214         config = config_get (PREFIX_NODE, line);
 215       else if (strncmp (line, "ipv6 prefix-list",
 216                strlen ("ipv6 prefix-list")) == 0)
 217         config = config_get (PREFIX_IPV6_NODE, line);
 218       else if (strncmp (line, "ip as-path access-list",
 219                strlen ("ip as-path access-list")) == 0)
 220         config = config_get (AS_LIST_NODE, line);
 221       else if (strncmp (line, "ip community-list",
 222                strlen ("ip community-list")) == 0)
 223         config = config_get (COMMUNITY_LIST_NODE, line);
 224       else if (strncmp (line, "ip route", strlen ("ip route")) == 0)
 225         config = config_get (IP_NODE, line);
 226       else if (strncmp (line, "ipv6 route", strlen ("ipv6 route")) == 0)
 227         config = config_get (IP_NODE, line);
 228       else if (strncmp (line, "key", strlen ("key")) == 0)
 229         config = config_get (KEYCHAIN_NODE, line);
 230       else if (strncmp (line, "line", strlen ("line")) == 0)
 231         config = config_get (VTY_NODE, line);
 232       else if ( (strncmp (line, "ipv6 forwarding",
 233                  strlen ("ipv6 forwarding")) == 0)
 234                || (strncmp (line, "ip forwarding",
 235                    strlen ("ip forwarding")) == 0) )
 236         config = config_get (FORWARDING_NODE, line);
 237       else if (strncmp (line, "service", strlen ("service")) == 0)
 238         config = config_get (SERVICE_NODE, line);
 239       else
 240         {
 241           if (strncmp (line, "log", strlen ("log")) == 0
 242               || strncmp (line, "hostname", strlen ("hostname")) == 0
 243               || strncmp (line, "password", strlen ("password")) == 0
 244               || strncmp (line, "enable password",
 245                           strlen ("enable password")) == 0
 246               || strncmp (line, "service", strlen ("service")) == 0
 247              )
 248             config_add_line_uniq (config_top, line);
 249           else
 250             config_add_line (config_top, line);
 251           config = NULL;
 252         }
 253       break;
 254     }
 255 }
 256
 257 void
 258 vtysh_config_parse (char *line)
 259 {
 260   char *begin;
 261   char *pnt;
 262
 263   begin = pnt = line;
 264
 265   while (*pnt != '\0')
 266     {
 267       if (*pnt == '\n')
 268         {
 269           *pnt++ = '\0';
 270           vtysh_config_parse_line (begin);
 271           begin = pnt;
 272         }
 273       else
 274         {
 275           pnt++;
 276         }
 277     }
 278 }
 279
 280 /* Macro to check delimiter is needed between each configuration line
 281  * or not. */
 282 #define NO_DELIMITER(I)  \
 283   ((I) == ACCESS_NODE || (I) == PREFIX_NODE || (I) == IP_NODE \
 284    || (I) == AS_LIST_NODE || (I) == COMMUNITY_LIST_NODE || \
 285    (I) == ACCESS_IPV6_NODE || (I) == PREFIX_IPV6_NODE \
 286    || (I) == SERVICE_NODE)
 287
 288 /* Display configuration to file pointer. */
 289 void
 290 vtysh_config_dump (FILE *fp)
 291 {
 292   struct listnode *nn;
 293   struct listnode *nm;
 294   struct config *config;
 295   struct list *master;
 296   char *line;
 297   unsigned int i;
 298
 299   LIST_LOOP (config_top, line, nn)
 300     {
 301       fprintf (fp, "%s\n", line);
 302       fflush (fp);
 303     }
 304   fprintf (fp, "!\n");
 305   fflush (fp);
 306
 307   for (i = 0; i < vector_max (configvec); i++)
 308     if ((master = vector_slot (configvec, i)) != NULL)
 309       {
 310         LIST_LOOP (master, config, nn)
 311           {
 312             fprintf (fp, "%s\n", config->name);
 313             fflush (fp);
 314
 315             LIST_LOOP (config->line, line, nm)
 316               {
 317                 fprintf  (fp, "%s\n", line);
 318                 fflush (fp);
 319               }
 320             if (! NO_DELIMITER (i))
 321               {
 322                 fprintf (fp, "!\n");
 323                 fflush (fp);
 324               }
 325           }
 326         if (NO_DELIMITER (i))
 327           {
 328             fprintf (fp, "!\n");
 329             fflush (fp);
 330           }
 331       }
 332
 333   for (i = 0; i < vector_max (configvec); i++)
 334     if ((master = vector_slot (configvec, i)) != NULL)
 335       {
 336         list_delete (master);
 337         vector_slot (configvec, i) = NULL;
 338       }
 339   list_delete_all_node (config_top);
 340 }
 341
 342 /* Read up configuration file from file_name. */
 343 static void
 344 vtysh_read_file (FILE *confp)
 345 {
 346   int ret;
 347   struct vty *vty;
 348
 349   vty = vty_new ();
 350   vty->fd = 0;                  /* stdout */
 351   vty->type = VTY_TERM;
 352   vty->node = CONFIG_NODE;
 353
 354   vtysh_execute_no_pager ("enable");
 355   vtysh_execute_no_pager ("configure terminal");
 356
 357   /* Execute configuration file. */
 358   ret = vtysh_config_from_file (vty, confp);
 359
 360   vtysh_execute_no_pager ("end");
 361   vtysh_execute_no_pager ("disable");
 362
 363   vty_close (vty);
 364
 365   if (ret != CMD_SUCCESS)
 366     {
 367       switch (ret)
 368         {
 369         case CMD_ERR_AMBIGUOUS:
 370           fprintf (stderr, "Ambiguous command.\n");
 371           break;
 372         case CMD_ERR_NO_MATCH:
 373           fprintf (stderr, "There is no such command.\n");
 374           break;
 375         }
 376       fprintf (stderr, "Error occured during reading below line.\n%s\n",
 377                vty->buf);
 378       exit (1);
 379     }
 380 }
 381
 382 /* Read up configuration file from config_default_dir. */
 383 int
 384 vtysh_read_config (char *config_default_dir)
 385 {
 386   FILE *confp = NULL;
 387
 388   confp = fopen (config_default_dir, "r");
 389   if (confp == NULL)
 390     return (1);
 391
 392   vtysh_read_file (confp);
 393   fclose (confp);
 394   host_config_set (config_default_dir);
 395
 396   return (0);
 397 }
 398
 399 /* We don't write vtysh specific into file from vtysh. vtysh.conf should
 400  * be edited by hand. So, we handle only "write terminal" case here and
 401  * integrate vtysh specific conf with conf from daemons.
 402  */
 403 void
 404 vtysh_config_write ()
 405 {
 406   char line[81];
 407   extern struct host host;
 408
 409   if (host.name)
 410     {
 411       sprintf (line, "hostname %s", host.name);
 412       vtysh_config_parse_line(line);
 413     }
 414   if (vtysh_writeconfig_integrated)
 415     vtysh_config_parse_line ("service integrated-vtysh-config");
 416 }
 417
 418 void
 419 vtysh_config_init ()
 420 {
 421   config_top = list_new ();
 422   config_top->del = (void (*) (void *))line_del;
 423   configvec = vector_init (1);
 424 }