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 *node, *nnode;
  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   for (ALL_LIST_ELEMENTS (master, node, nnode, config_loop))
 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 *node, *nnode;
 134   char *pnt;
 135
 136   for (ALL_LIST_ELEMENTS (config, node, nnode, pnt))
 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-id", strlen ("router-id")) == 0)
 192         config = config_get (ZEBRA_NODE, line);
 193       else if (strncmp (line, "router rip", strlen ("router rip")) == 0)
 194         config = config_get (RIP_NODE, line);
 195       else if (strncmp (line, "router ripng", strlen ("router ripng")) == 0)
 196         config = config_get (RIPNG_NODE, line);
 197       else if (strncmp (line, "router ospf", strlen ("router ospf")) == 0)
 198         config = config_get (OSPF_NODE, line);
 199       else if (strncmp (line, "router ospf6", strlen ("router ospf6")) == 0)
 200         config = config_get (OSPF6_NODE, line);
 201       else if (strncmp (line, "router bgp", strlen ("router bgp")) == 0)
 202         config = config_get (BGP_NODE, line);
 203       else if (strncmp (line, "router isis", strlen ("router isis")) == 0)
 204         config = config_get (ISIS_NODE, line);
 205       else if (strncmp (line, "router bgp", strlen ("router bgp")) == 0)
 206         config = config_get (BGP_NODE, line);
 207       else if (strncmp (line, "route-map", strlen ("route-map")) == 0)
 208         config = config_get (RMAP_NODE, line);
 209       else if (strncmp (line, "access-list", strlen ("access-list")) == 0)
 210         config = config_get (ACCESS_NODE, line);
 211       else if (strncmp (line, "ipv6 access-list",
 212                strlen ("ipv6 access-list")) == 0)
 213         config = config_get (ACCESS_IPV6_NODE, line);
 214       else if (strncmp (line, "ip prefix-list",
 215                strlen ("ip prefix-list")) == 0)
 216         config = config_get (PREFIX_NODE, line);
 217       else if (strncmp (line, "ipv6 prefix-list",
 218                strlen ("ipv6 prefix-list")) == 0)
 219         config = config_get (PREFIX_IPV6_NODE, line);
 220       else if (strncmp (line, "ip as-path access-list",
 221                strlen ("ip as-path access-list")) == 0)
 222         config = config_get (AS_LIST_NODE, line);
 223       else if (strncmp (line, "ip community-list",
 224                strlen ("ip community-list")) == 0)
 225         config = config_get (COMMUNITY_LIST_NODE, line);
 226       else if (strncmp (line, "ip route", strlen ("ip route")) == 0)
 227         config = config_get (IP_NODE, line);
 228       else if (strncmp (line, "ipv6 route", strlen ("ipv6 route")) == 0)
 229         config = config_get (IP_NODE, line);
 230       else if (strncmp (line, "key", strlen ("key")) == 0)
 231         config = config_get (KEYCHAIN_NODE, line);
 232       else if (strncmp (line, "line", strlen ("line")) == 0)
 233         config = config_get (VTY_NODE, line);
 234       else if ( (strncmp (line, "ipv6 forwarding",
 235                  strlen ("ipv6 forwarding")) == 0)
 236                || (strncmp (line, "ip forwarding",
 237                    strlen ("ip forwarding")) == 0) )
 238         config = config_get (FORWARDING_NODE, line);
 239       else if (strncmp (line, "service", strlen ("service")) == 0)
 240         config = config_get (SERVICE_NODE, line);
 241       else if (strncmp (line, "debug", strlen ("debug")) == 0)
 242         config = config_get (DEBUG_NODE, line);
 243       else if (strncmp (line, "password", strlen ("password")) == 0
 244                || strncmp (line, "enable password",
 245                            strlen ("enable password")) == 0)
 246         config = config_get (AAA_NODE, line);
 247       else
 248         {
 249           if (strncmp (line, "log", strlen ("log")) == 0
 250               || strncmp (line, "hostname", strlen ("hostname")) == 0
 251              )
 252             config_add_line_uniq (config_top, line);
 253           else
 254             config_add_line (config_top, line);
 255           config = NULL;
 256         }
 257       break;
 258     }
 259 }
 260
 261 void
 262 vtysh_config_parse (char *line)
 263 {
 264   char *begin;
 265   char *pnt;
 266
 267   begin = pnt = line;
 268
 269   while (*pnt != '\0')
 270     {
 271       if (*pnt == '\n')
 272         {
 273           *pnt++ = '\0';
 274           vtysh_config_parse_line (begin);
 275           begin = pnt;
 276         }
 277       else
 278         {
 279           pnt++;
 280         }
 281     }
 282 }
 283
 284 /* Macro to check delimiter is needed between each configuration line
 285  * or not. */
 286 #define NO_DELIMITER(I)  \
 287   ((I) == ACCESS_NODE || (I) == PREFIX_NODE || (I) == IP_NODE \
 288    || (I) == AS_LIST_NODE || (I) == COMMUNITY_LIST_NODE || \
 289    (I) == ACCESS_IPV6_NODE || (I) == PREFIX_IPV6_NODE \
 290    || (I) == SERVICE_NODE || (I) == FORWARDING_NODE || (I) == DEBUG_NODE \
 291    || (I) == AAA_NODE)
 292
 293 /* Display configuration to file pointer. */
 294 void
 295 vtysh_config_dump (FILE *fp)
 296 {
 297   struct listnode *node, *nnode;
 298   struct listnode *mnode, *mnnode;
 299   struct config *config;
 300   struct list *master;
 301   char *line;
 302   unsigned int i;
 303
 304   for (ALL_LIST_ELEMENTS (config_top, node, nnode, line))
 305     {
 306       fprintf (fp, "%s\n", line);
 307       fflush (fp);
 308     }
 309   fprintf (fp, "!\n");
 310   fflush (fp);
 311
 312   for (i = 0; i < vector_active (configvec); i++)
 313     if ((master = vector_slot (configvec, i)) != NULL)
 314       {
 315         for (ALL_LIST_ELEMENTS (master, node, nnode, config))
 316           {
 317             fprintf (fp, "%s\n", config->name);
 318             fflush (fp);
 319
 320             for (ALL_LIST_ELEMENTS (config->line, mnode, mnnode, line))
 321               {
 322                 fprintf  (fp, "%s\n", line);
 323                 fflush (fp);
 324               }
 325             if (! NO_DELIMITER (i))
 326               {
 327                 fprintf (fp, "!\n");
 328                 fflush (fp);
 329               }
 330           }
 331         if (NO_DELIMITER (i))
 332           {
 333             fprintf (fp, "!\n");
 334             fflush (fp);
 335           }
 336       }
 337
 338   for (i = 0; i < vector_active (configvec); i++)
 339     if ((master = vector_slot (configvec, i)) != NULL)
 340       {
 341         list_delete (master);
 342         vector_slot (configvec, i) = NULL;
 343       }
 344   list_delete_all_node (config_top);
 345 }
 346
 347 /* Read up configuration file from file_name. */
 348 static void
 349 vtysh_read_file (FILE *confp)
 350 {
 351   int ret;
 352   struct vty *vty;
 353
 354   vty = vty_new ();
 355   vty->fd = 0;                  /* stdout */
 356   vty->type = VTY_TERM;
 357   vty->node = CONFIG_NODE;
 358
 359   vtysh_execute_no_pager ("enable");
 360   vtysh_execute_no_pager ("configure terminal");
 361
 362   /* Execute configuration file. */
 363   ret = vtysh_config_from_file (vty, confp);
 364
 365   vtysh_execute_no_pager ("end");
 366   vtysh_execute_no_pager ("disable");
 367
 368   vty_close (vty);
 369
 370   if (ret != CMD_SUCCESS)
 371     {
 372       switch (ret)
 373         {
 374         case CMD_ERR_AMBIGUOUS:
 375           fprintf (stderr, "Ambiguous command.\n");
 376           break;
 377         case CMD_ERR_NO_MATCH:
 378           fprintf (stderr, "There is no such command.\n");
 379           break;
 380         }
 381       fprintf (stderr, "Error occured during reading below line.\n%s\n",
 382                vty->buf);
 383       exit (1);
 384     }
 385 }
 386
 387 /* Read up configuration file from config_default_dir. */
 388 int
 389 vtysh_read_config (char *config_default_dir)
 390 {
 391   FILE *confp = NULL;
 392
 393   confp = fopen (config_default_dir, "r");
 394   if (confp == NULL)
 395     return (1);
 396
 397   vtysh_read_file (confp);
 398   fclose (confp);
 399   host_config_set (config_default_dir);
 400
 401   return (0);
 402 }
 403
 404 /* We don't write vtysh specific into file from vtysh. vtysh.conf should
 405  * be edited by hand. So, we handle only "write terminal" case here and
 406  * integrate vtysh specific conf with conf from daemons.
 407  */
 408 void
 409 vtysh_config_write ()
 410 {
 411   char line[81];
 412   extern struct host host;
 413
 414   if (host.name)
 415     {
 416       sprintf (line, "hostname %s", host.name);
 417       vtysh_config_parse_line(line);
 418     }
 419   if (vtysh_writeconfig_integrated)
 420     vtysh_config_parse_line ("service integrated-vtysh-config");
 421 }
 422
 423 void
 424 vtysh_config_init ()
 425 {
 426   config_top = list_new ();
 427   config_top->del = (void (*) (void *))line_del;
 428   configvec = vector_init (1);
 429 }