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 #include "vtysh/vtysh_user.h"
  29
  30 DEFINE_MGROUP(MVTYSH, "vtysh")
  31 DEFINE_MTYPE_STATIC(MVTYSH, VTYSH_CONFIG,      "Vtysh configuration")
  32 DEFINE_MTYPE_STATIC(MVTYSH, VTYSH_CONFIG_LINE, "Vtysh configuration line")
  33
  34 vector configvec;
  35
  36 struct config
  37 {
  38   /* Configuration node name. */
  39   char *name;
  40
  41   /* Configuration string line. */
  42   struct list *line;
  43
  44   /* Configuration can be nest. */
  45   struct config *config;
  46
  47   /* Index of this config. */
  48   u_int32_t index;
  49 };
  50
  51 struct list *config_top;
  52
  53 static int
  54 line_cmp (char *c1, char *c2)
  55 {
  56   return strcmp (c1, c2);
  57 }
  58
  59 static void
  60 line_del (char *line)
  61 {
  62   XFREE (MTYPE_VTYSH_CONFIG_LINE, line);
  63 }
  64
  65 static struct config *
  66 config_new (void)
  67 {
  68   struct config *config;
  69   config = XCALLOC (MTYPE_VTYSH_CONFIG, sizeof (struct config));
  70   return config;
  71 }
  72
  73 static int
  74 config_cmp (struct config *c1, struct config *c2)
  75 {
  76   return strcmp (c1->name, c2->name);
  77 }
  78
  79 static void
  80 config_del (struct config* config)
  81 {
  82   list_delete (config->line);
  83   if (config->name)
  84     XFREE (MTYPE_VTYSH_CONFIG_LINE, config->name);
  85   XFREE (MTYPE_VTYSH_CONFIG, config);
  86 }
  87
  88 static struct config *
  89 config_get (int index, const char *line)
  90 {
  91   struct config *config;
  92   struct config *config_loop;
  93   struct list *master;
  94   struct listnode *node, *nnode;
  95
  96   config = config_loop = NULL;
  97
  98   master = vector_lookup_ensure (configvec, index);
  99
 100   if (! master)
 101     {
 102       master = list_new ();
 103       master->del = (void (*) (void *))config_del;
 104       master->cmp = (int (*)(void *, void *)) config_cmp;
 105       vector_set_index (configvec, index, master);
 106     }
 107
 108   for (ALL_LIST_ELEMENTS (master, node, nnode, config_loop))
 109     {
 110       if (strcmp (config_loop->name, line) == 0)
 111         config = config_loop;
 112     }
 113
 114   if (! config)
 115     {
 116       config = config_new ();
 117       config->line = list_new ();
 118       config->line->del = (void (*) (void *))line_del;
 119       config->line->cmp = (int (*)(void *, void *)) line_cmp;
 120       config->name = XSTRDUP (MTYPE_VTYSH_CONFIG_LINE, line);
 121       config->index = index;
 122       listnode_add (master, config);
 123     }
 124   return config;
 125 }
 126
 127 void
 128 config_add_line (struct list *config, const char *line)
 129 {
 130   listnode_add (config, XSTRDUP (MTYPE_VTYSH_CONFIG_LINE, line));
 131 }
 132
 133 static void
 134 config_add_line_uniq (struct list *config, const char *line)
 135 {
 136   struct listnode *node, *nnode;
 137   char *pnt;
 138
 139   for (ALL_LIST_ELEMENTS (config, node, nnode, pnt))
 140     {
 141       if (strcmp (pnt, line) == 0)
 142         return;
 143     }
 144   listnode_add_sort (config, XSTRDUP (MTYPE_VTYSH_CONFIG_LINE, line));
 145 }
 146
 147 void
 148 vtysh_config_parse_line (const char *line)
 149 {
 150   char c;
 151   static struct config *config = NULL;
 152
 153   if (! line)
 154     return;
 155
 156   c = line[0];
 157
 158   if (c == '\0')
 159     return;
 160
 161   /* printf ("[%s]\n", line); */
 162
 163   switch (c)
 164     {
 165     /* Suppress exclamation points ! and commented lines. The !s are generated
 166      * dynamically in vtysh_config_dump() */
 167     case '!':
 168     case '#':
 169       break;
 170     case ' ':
 171       /* Store line to current configuration. */
 172       if (config)
 173         {
 174           if (strncmp (line, " link-params", strlen (" link-params")) == 0)
 175             {
 176               config_add_line (config->line, line);
 177               config->index = LINK_PARAMS_NODE;
 178             }
 179           else if (config->index == LINK_PARAMS_NODE &&
 180               strncmp (line, "  exit-link-params", strlen ("  exit")) == 0)
 181             {
 182               config_add_line (config->line, line);
 183               config->index = INTERFACE_NODE;
 184             }
 185           else if (config->index == RMAP_NODE ||
 186               config->index == INTERFACE_NODE ||
 187               config->index == NS_NODE ||
 188               config->index == VTY_NODE)
 189             config_add_line_uniq (config->line, line);
 190           else
 191             config_add_line (config->line, line);
 192         }
 193       else
 194         config_add_line (config_top, line);
 195       break;
 196     default:
 197       if (strncmp (line, "interface", strlen ("interface")) == 0)
 198         config = config_get (INTERFACE_NODE, line);
 199       else if (strncmp (line, "logical-router", strlen ("ns")) == 0)
 200         config = config_get (NS_NODE, line);
 201       else if (strncmp (line, "vrf", strlen ("vrf")) == 0)
 202         config = config_get (VRF_NODE, line);
 203       else if (strncmp (line, "router-id", strlen ("router-id")) == 0)
 204         config = config_get (ZEBRA_NODE, line);
 205       else if (strncmp (line, "router rip", strlen ("router rip")) == 0)
 206         config = config_get (RIP_NODE, line);
 207       else if (strncmp (line, "router ripng", strlen ("router ripng")) == 0)
 208         config = config_get (RIPNG_NODE, line);
 209       else if (strncmp (line, "router eigrp", strlen ("router eigrp")) == 0)
 210         config = config_get (EIGRP_NODE, line);
 211       else if (strncmp (line, "router ospf", strlen ("router ospf")) == 0)
 212         config = config_get (OSPF_NODE, line);
 213       else if (strncmp (line, "router ospf6", strlen ("router ospf6")) == 0)
 214         config = config_get (OSPF6_NODE, line);
 215       else if (strncmp (line, "mpls ldp", strlen ("mpls ldp")) == 0)
 216         config = config_get (LDP_NODE, line);
 217       else if (strncmp (line, "l2vpn", strlen ("l2vpn")) == 0)
 218         config = config_get (LDP_L2VPN_NODE, line);
 219       else if (strncmp (line, "router bgp", strlen ("router bgp")) == 0)
 220         config = config_get (BGP_NODE, line);
 221       else if (strncmp (line, "router isis", strlen ("router isis")) == 0)
 222         config = config_get (ISIS_NODE, line);
 223       else if (strncmp (line, "route-map", strlen ("route-map")) == 0)
 224         config = config_get (RMAP_NODE, line);
 225       else if (strncmp (line, "access-list", strlen ("access-list")) == 0)
 226         config = config_get (ACCESS_NODE, line);
 227       else if (strncmp (line, "ipv6 access-list",
 228                strlen ("ipv6 access-list")) == 0)
 229         config = config_get (ACCESS_IPV6_NODE, line);
 230       else if (strncmp (line, "ip prefix-list",
 231                strlen ("ip prefix-list")) == 0)
 232         config = config_get (PREFIX_NODE, line);
 233       else if (strncmp (line, "ipv6 prefix-list",
 234                strlen ("ipv6 prefix-list")) == 0)
 235         config = config_get (PREFIX_IPV6_NODE, line);
 236       else if (strncmp (line, "ip as-path access-list",
 237                strlen ("ip as-path access-list")) == 0)
 238         config = config_get (AS_LIST_NODE, line);
 239       else if (strncmp (line, "ip community-list", strlen ("ip community-list")) == 0 ||
 240                strncmp (line, "ip extcommunity-list", strlen ("ip extcommunity-list")) == 0)
 241         config = config_get (COMMUNITY_LIST_NODE, line);
 242       else if (strncmp (line, "ip route", strlen ("ip route")) == 0)
 243         config = config_get (IP_NODE, line);
 244       else if (strncmp (line, "ipv6 route", strlen ("ipv6 route")) == 0)
 245         config = config_get (IP_NODE, line);
 246       else if (strncmp (line, "key", strlen ("key")) == 0)
 247         config = config_get (KEYCHAIN_NODE, line);
 248       else if (strncmp (line, "line", strlen ("line")) == 0)
 249         config = config_get (VTY_NODE, line);
 250       else if ( (strncmp (line, "ipv6 forwarding",
 251                  strlen ("ipv6 forwarding")) == 0)
 252                || (strncmp (line, "ip forwarding",
 253                    strlen ("ip forwarding")) == 0) )
 254         config = config_get (FORWARDING_NODE, line);
 255       else if (strncmp (line, "service", strlen ("service")) == 0)
 256         config = config_get (SERVICE_NODE, line);
 257       else if (strncmp (line, "debug vrf", strlen ("debug vrf")) == 0)
 258         config = config_get (VRF_DEBUG_NODE, line);
 259       else if (strncmp (line, "debug", strlen ("debug")) == 0)
 260         config = config_get (DEBUG_NODE, line);
 261       else if (strncmp (line, "password", strlen ("password")) == 0
 262                || strncmp (line, "enable password",
 263                            strlen ("enable password")) == 0)
 264         config = config_get (AAA_NODE, line);
 265       else if (strncmp (line, "ip protocol", strlen ("ip protocol")) == 0)
 266         config = config_get (PROTOCOL_NODE, line);
 267       else if (strncmp (line, "ipv6 protocol", strlen ("ipv6 protocol")) == 0)
 268         config = config_get (PROTOCOL_NODE, line);
 269       else if (strncmp (line, "ip nht", strlen ("ip nht")) == 0)
 270         config = config_get (PROTOCOL_NODE, line);
 271       else if (strncmp (line, "ipv6 nht", strlen ("ipv6 nht")) == 0)
 272         config = config_get (PROTOCOL_NODE, line);
 273       else if (strncmp (line, "mpls", strlen ("mpls")) == 0)
 274         config = config_get (MPLS_NODE, line);
 275       else
 276         {
 277           if (strncmp (line, "log", strlen ("log")) == 0
 278               || strncmp (line, "hostname", strlen ("hostname")) == 0
 279              )
 280             config_add_line_uniq (config_top, line);
 281           else
 282             config_add_line (config_top, line);
 283           config = NULL;
 284         }
 285       break;
 286     }
 287 }
 288
 289 /* Macro to check delimiter is needed between each configuration line
 290  * or not. */
 291 #define NO_DELIMITER(I)  \
 292   ((I) == ACCESS_NODE || (I) == PREFIX_NODE || (I) == IP_NODE \
 293    || (I) == AS_LIST_NODE || (I) == COMMUNITY_LIST_NODE || \
 294    (I) == ACCESS_IPV6_NODE || (I) == PREFIX_IPV6_NODE \
 295    || (I) == SERVICE_NODE || (I) == FORWARDING_NODE || (I) == DEBUG_NODE \
 296    || (I) == AAA_NODE || (I) == VRF_DEBUG_NODE || (I) == MPLS_NODE)
 297
 298 /* Display configuration to file pointer. */
 299 void
 300 vtysh_config_dump (FILE *fp)
 301 {
 302   struct listnode *node, *nnode;
 303   struct listnode *mnode, *mnnode;
 304   struct config *config;
 305   struct list *master;
 306   char *line;
 307   unsigned int i;
 308
 309   for (ALL_LIST_ELEMENTS (config_top, node, nnode, line))
 310     {
 311       fprintf (fp, "%s\n", line);
 312       fflush (fp);
 313     }
 314   fprintf (fp, "!\n");
 315   fflush (fp);
 316
 317   for (i = 0; i < vector_active (configvec); i++)
 318     if ((master = vector_slot (configvec, i)) != NULL)
 319       {
 320         for (ALL_LIST_ELEMENTS (master, node, nnode, config))
 321     {
 322       /* Don't print empty sections for interface/vrf. Route maps on the
 323        * other hand could have a legitimate empty section at the end.
 324        */
 325       if ((config->index == INTERFACE_NODE || (config->index == VRF_NODE))
 326           && list_isempty (config->line))
 327         continue;
 328
 329             fprintf (fp, "%s\n", config->name);
 330             fflush (fp);
 331
 332             for (ALL_LIST_ELEMENTS (config->line, mnode, mnnode, line))
 333               {
 334                 fprintf  (fp, "%s\n", line);
 335                 fflush (fp);
 336               }
 337             if (! NO_DELIMITER (i))
 338               {
 339                 fprintf (fp, "!\n");
 340                 fflush (fp);
 341               }
 342           }
 343         if (NO_DELIMITER (i))
 344           {
 345             fprintf (fp, "!\n");
 346             fflush (fp);
 347           }
 348       }
 349
 350   for (i = 0; i < vector_active (configvec); i++)
 351     if ((master = vector_slot (configvec, i)) != NULL)
 352       {
 353         list_delete (master);
 354         vector_slot (configvec, i) = NULL;
 355       }
 356   list_delete_all_node (config_top);
 357 }
 358
 359 /* Read up configuration file from file_name. */
 360 static int
 361 vtysh_read_file (FILE *confp)
 362 {
 363   struct vty *vty;
 364   int ret;
 365
 366   vty = vty_new ();
 367   vty->fd = 0;                  /* stdout */
 368   vty->type = VTY_TERM;
 369   vty->node = CONFIG_NODE;
 370
 371   vtysh_execute_no_pager ("enable");
 372   vtysh_execute_no_pager ("configure terminal");
 373
 374   /* Execute configuration file. */
 375   ret = vtysh_config_from_file (vty, confp);
 376
 377   vtysh_execute_no_pager ("end");
 378   vtysh_execute_no_pager ("disable");
 379
 380   vty_close (vty);
 381
 382   return (ret);
 383 }
 384
 385 /* Read up configuration file from config_default_dir. */
 386 int
 387 vtysh_read_config (const char *config_default_dir)
 388 {
 389   FILE *confp = NULL;
 390   int ret;
 391
 392   confp = fopen (config_default_dir, "r");
 393   if (confp == NULL)
 394     {
 395       fprintf (stderr, "%% Can't open configuration file %s due to '%s'.\n",
 396                config_default_dir, safe_strerror (errno));
 397       return (CMD_ERR_NO_FILE);
 398     }
 399
 400   ret = vtysh_read_file (confp);
 401   fclose (confp);
 402
 403   return (ret);
 404 }
 405
 406 /* We don't write vtysh specific into file from vtysh. vtysh.conf should
 407  * be edited by hand. So, we handle only "write terminal" case here and
 408  * integrate vtysh specific conf with conf from daemons.
 409  */
 410 void
 411 vtysh_config_write ()
 412 {
 413   char line[81];
 414   extern struct host host;
 415
 416   if (host.name)
 417     {
 418       sprintf (line, "hostname %s", host.name);
 419       vtysh_config_parse_line(line);
 420     }
 421   if (vtysh_write_integrated == WRITE_INTEGRATED_NO)
 422     vtysh_config_parse_line ("no service integrated-vtysh-config");
 423   if (vtysh_write_integrated == WRITE_INTEGRATED_YES)
 424     vtysh_config_parse_line ("service integrated-vtysh-config");
 425
 426   user_config_write ();
 427 }
 428
 429 void
 430 vtysh_config_init ()
 431 {
 432   config_top = list_new ();
 433   config_top->del = (void (*) (void *))line_del;
 434   configvec = vector_init (1);
 435 }