vty.c
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:58k
- /*
- * Virtual terminal [aka TeletYpe] interface routine.
- * Copyright (C) 1997, 98 Kunihiro Ishiguro
- *
- * This file is part of GNU Zebra.
- *
- * GNU Zebra is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * GNU Zebra is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Zebra; see the file COPYING. If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
- */
- #include <zebra.h>
- #include "linklist.h"
- #include "buffer.h"
- #include "version.h"
- #include "command.h"
- #include "sockunion.h"
- #include "thread.h"
- #include "memory.h"
- #include "str.h"
- #include "log.h"
- #include "prefix.h"
- #include "filter.h"
- /* Vty events */
- enum event
- {
- VTY_SERV,
- VTY_READ,
- VTY_WRITE,
- VTY_TIMEOUT_RESET,
- #ifdef VTYSH
- VTYSH_SERV,
- VTYSH_READ
- #endif /* VTYSH */
- };
- static void vty_event (enum event, int, struct vty *);
- /* Extern host structure from command.c */
- extern struct host host;
- /* Vector which store each vty structure. */
- static vector vtyvec;
- /* Vty timeout value. */
- static unsigned long vty_timeout_val = VTY_TIMEOUT_DEFAULT;
- /* Vty access-class command */
- static char *vty_accesslist_name = NULL;
- /* Vty access-calss for IPv6. */
- static char *vty_ipv6_accesslist_name = NULL;
- /* VTY server thread. */
- vector Vvty_serv_thread;
- /* Current directory. */
- char *vty_cwd = NULL;
- /* Configure lock. */
- static int vty_config;
- /* Login password check. */
- static int no_password_check = 0;
- /* Integrated configuration file path */
- char integrate_default[] = SYSCONFDIR INTEGRATE_DEFAULT_CONFIG;
- /* VTY standard output function. */
- int
- vty_out (struct vty *vty, const char *format, ...)
- {
- va_list args;
- int len = 0;
- int size = 1024;
- char buf[1024];
- char *p = NULL;
-
- va_start (args, format);
- if (vty_shell (vty))
- vprintf (format, args);
- else
- {
- /* Try to write to initial buffer. */
- len = vsnprintf (buf, sizeof buf, format, args);
- /* Initial buffer is not enough. */
- if (len < 0 || len >= size)
- {
- while (1)
- {
- if (len > -1)
- size = len + 1;
- else
- size = size * 2;
- p = XREALLOC (MTYPE_VTY_OUT_BUF, p, size);
- if (! p)
- return -1;
- len = vsnprintf (p, size, format, args);
- if (len > -1 && len < size)
- break;
- }
- }
- /* When initial buffer is enough to store all output. */
- if (! p)
- p = buf;
- /* Pointer p must point out buffer. */
- if (vty_shell_serv (vty))
- write (vty->fd, (u_char *) p, len);
- else
- buffer_write (vty->obuf, (u_char *) p, len);
- /* If p is not different with buf, it is allocated buffer. */
- if (p != buf)
- XFREE (MTYPE_VTY_OUT_BUF, p);
- }
- va_end (args);
- return len;
- }
- #define TIME_BUF 27
- /* current time string. */
- int
- time_str (char *buf)
- {
- time_t clock;
- struct tm *tm;
- int ret;
- time (&clock);
- tm = localtime (&clock);
- ret = strftime (buf, TIME_BUF, "%Y/%m/%d %H:%M:%S", tm);
- return ret;
- }
- int
- vty_log_out (struct vty *vty, const char *proto_str, const char *format,
- va_list va)
- {
- int len;
- int ret;
- char buf[1024];
- char time_buf[TIME_BUF];
- ret = time_str (time_buf);
- if (ret != 0)
- {
- snprintf (buf, sizeof buf, "%s ", time_buf);
- write (vty->fd, buf, strlen (time_buf) + 1);
- }
- snprintf (buf, sizeof buf, "%s: ", proto_str);
- write (vty->fd, buf, strlen (proto_str) + 2);
- len = vsnprintf (buf, sizeof buf, format, va);
- if (len < 0)
- return -1;
- write (vty->fd, (u_char *)buf, len);
- snprintf (buf, sizeof buf, "rn");
- write (vty->fd, buf, 2);
- return len;
- }
- /* Output current time to the vty. */
- void
- vty_time_print (struct vty *vty, int cr)
- {
- int ret;
- char buf [TIME_BUF];
-
- ret = time_str (buf);
- if (ret == 0)
- {
- zlog (NULL, LOG_INFO, "strftime error");
- return;
- }
- if (cr)
- vty_out (vty, "%sn", buf);
- else
- vty_out (vty, "%s ", buf);
- return;
- }
- /* Say hello to vty interface. */
- void
- vty_hello (struct vty *vty)
- {
- if (host.motd)
- vty_out (vty, host.motd);
- }
- /* Put out prompt and wait input from user. */
- static void
- vty_prompt (struct vty *vty)
- {
- struct utsname names;
- const char*hostname;
- if (vty->type == VTY_TERM)
- {
- hostname = host.name;
- if (!hostname)
- {
- uname (&names);
- hostname = names.nodename;
- }
- vty_out (vty, cmd_prompt (vty->node), hostname);
- }
- }
- /* Send WILL TELOPT_ECHO to remote server. */
- void
- vty_will_echo (struct vty *vty)
- {
- char cmd[] = { IAC, WILL, TELOPT_ECHO, ' ' };
- vty_out (vty, "%s", cmd);
- }
- /* Make suppress Go-Ahead telnet option. */
- static void
- vty_will_suppress_go_ahead (struct vty *vty)
- {
- char cmd[] = { IAC, WILL, TELOPT_SGA, ' ' };
- vty_out (vty, "%s", cmd);
- }
- /* Make don't use linemode over telnet. */
- static void
- vty_dont_linemode (struct vty *vty)
- {
- char cmd[] = { IAC, DONT, TELOPT_LINEMODE, ' ' };
- vty_out (vty, "%s", cmd);
- }
- /* Use window size. */
- static void
- vty_do_window_size (struct vty *vty)
- {
- char cmd[] = { IAC, DO, TELOPT_NAWS, ' ' };
- vty_out (vty, "%s", cmd);
- }
- #if 0 /* Currently not used. */
- /* Make don't use lflow vty interface. */
- static void
- vty_dont_lflow_ahead (struct vty *vty)
- {
- char cmd[] = { IAC, DONT, TELOPT_LFLOW, ' ' };
- vty_out (vty, "%s", cmd);
- }
- #endif /* 0 */
- /* Allocate new vty struct. */
- struct vty *
- vty_new ()
- {
- struct vty *new = XCALLOC (MTYPE_VTY, sizeof (struct vty));
- new->obuf = (struct buffer *) buffer_new (100);
- new->buf = XCALLOC (MTYPE_VTY, VTY_BUFSIZ);
- new->max = VTY_BUFSIZ;
- new->sb_buffer = NULL;
- return new;
- }
- /* Authentication of vty */
- static void
- vty_auth (struct vty *vty, char *buf)
- {
- char *passwd = NULL;
- enum node_type next_node = 0;
- int fail;
- char *crypt (const char *, const char *);
- switch (vty->node)
- {
- case AUTH_NODE:
- if (host.password_encrypt)
- passwd = host.password_encrypt;
- else
- passwd = host.password;
- if (host.advanced)
- next_node = host.enable ? VIEW_NODE : ENABLE_NODE;
- else
- next_node = VIEW_NODE;
- break;
- case AUTH_ENABLE_NODE:
- if (host.enable_encrypt)
- passwd = host.enable_encrypt;
- else
- passwd = host.enable;
- next_node = ENABLE_NODE;
- break;
- }
- if (passwd)
- {
- if (strcmp (crypt(buf, passwd), passwd) == 0
- || strcmp (buf, passwd) == 0)
- fail = 0;
- else
- fail = 1;
- }
- else
- fail = 1;
- if (! fail)
- {
- vty->fail = 0;
- vty->node = next_node; /* Success ! */
- }
- else
- {
- vty->fail++;
- if (vty->fail >= 3)
- {
- if (vty->node == AUTH_NODE)
- {
- vty_out (vty, "%% Bad passwords, too many failures!%s", VTY_NEWLINE);
- vty->status = VTY_CLOSE;
- }
- else
- {
- /* AUTH_ENABLE_NODE */
- vty->fail = 0;
- vty_out (vty, "%% Bad enable passwords, too many failures!%s", VTY_NEWLINE);
- vty->node = VIEW_NODE;
- }
- }
- }
- }
- /* Command execution over the vty interface. */
- int
- vty_command (struct vty *vty, char *buf)
- {
- int ret;
- vector vline;
- /* Split readline string up into the vector */
- vline = cmd_make_strvec (buf);
- if (vline == NULL)
- return CMD_SUCCESS;
- ret = cmd_execute_command (vline, vty, NULL);
- if (ret != CMD_SUCCESS)
- switch (ret)
- {
- case CMD_WARNING:
- if (vty->type == VTY_FILE)
- vty_out (vty, "Warning...%s", VTY_NEWLINE);
- break;
- case CMD_ERR_AMBIGUOUS:
- vty_out (vty, "%% Ambiguous command.%s", VTY_NEWLINE);
- break;
- case CMD_ERR_NO_MATCH:
- vty_out (vty, "%% Unknown command.%s", VTY_NEWLINE);
- break;
- case CMD_ERR_INCOMPLETE:
- vty_out (vty, "%% Command incomplete.%s", VTY_NEWLINE);
- break;
- }
- cmd_free_strvec (vline);
- return ret;
- }
- char telnet_backward_char = 0x08;
- char telnet_space_char = ' ';
- /* Basic function to write buffer to vty. */
- static void
- vty_write (struct vty *vty, char *buf, size_t nbytes)
- {
- if ((vty->node == AUTH_NODE) || (vty->node == AUTH_ENABLE_NODE))
- return;
- /* Should we do buffering here ? And make vty_flush (vty) ? */
- buffer_write (vty->obuf, (u_char *)buf, nbytes);
- }
- /* Ensure length of input buffer. Is buffer is short, double it. */
- static void
- vty_ensure (struct vty *vty, int length)
- {
- if (vty->max <= length)
- {
- vty->max *= 2;
- vty->buf = XREALLOC (MTYPE_VTY, vty->buf, vty->max);
- }
- }
- /* Basic function to insert character into vty. */
- static void
- vty_self_insert (struct vty *vty, char c)
- {
- int i;
- int length;
- vty_ensure (vty, vty->length + 1);
- length = vty->length - vty->cp;
- memmove (&vty->buf[vty->cp + 1], &vty->buf[vty->cp], length);
- vty->buf[vty->cp] = c;
- vty_write (vty, &vty->buf[vty->cp], length + 1);
- for (i = 0; i < length; i++)
- vty_write (vty, &telnet_backward_char, 1);
- vty->cp++;
- vty->length++;
- }
- /* Self insert character 'c' in overwrite mode. */
- static void
- vty_self_insert_overwrite (struct vty *vty, char c)
- {
- vty_ensure (vty, vty->length + 1);
- vty->buf[vty->cp++] = c;
- if (vty->cp > vty->length)
- vty->length++;
- if ((vty->node == AUTH_NODE) || (vty->node == AUTH_ENABLE_NODE))
- return;
- vty_write (vty, &c, 1);
- }
- /* Insert a word into vty interface with overwrite mode. */
- static void
- vty_insert_word_overwrite (struct vty *vty, char *str)
- {
- int len = strlen (str);
- vty_write (vty, str, len);
- strcpy (&vty->buf[vty->cp], str);
- vty->cp += len;
- vty->length = vty->cp;
- }
- /* Forward character. */
- static void
- vty_forward_char (struct vty *vty)
- {
- if (vty->cp < vty->length)
- {
- vty_write (vty, &vty->buf[vty->cp], 1);
- vty->cp++;
- }
- }
- /* Backward character. */
- static void
- vty_backward_char (struct vty *vty)
- {
- if (vty->cp > 0)
- {
- vty->cp--;
- vty_write (vty, &telnet_backward_char, 1);
- }
- }
- /* Move to the beginning of the line. */
- static void
- vty_beginning_of_line (struct vty *vty)
- {
- while (vty->cp)
- vty_backward_char (vty);
- }
- /* Move to the end of the line. */
- static void
- vty_end_of_line (struct vty *vty)
- {
- while (vty->cp < vty->length)
- vty_forward_char (vty);
- }
- static void vty_kill_line_from_beginning (struct vty *);
- static void vty_redraw_line (struct vty *);
- /* Print command line history. This function is called from
- vty_next_line and vty_previous_line. */
- static void
- vty_history_print (struct vty *vty)
- {
- int length;
- vty_kill_line_from_beginning (vty);
- /* Get previous line from history buffer */
- length = strlen (vty->hist[vty->hp]);
- memcpy (vty->buf, vty->hist[vty->hp], length);
- vty->cp = vty->length = length;
- /* Redraw current line */
- vty_redraw_line (vty);
- }
- /* Show next command line history. */
- void
- vty_next_line (struct vty *vty)
- {
- int try_index;
- if (vty->hp == vty->hindex)
- return;
- /* Try is there history exist or not. */
- try_index = vty->hp;
- if (try_index == (VTY_MAXHIST - 1))
- try_index = 0;
- else
- try_index++;
- /* If there is not history return. */
- if (vty->hist[try_index] == NULL)
- return;
- else
- vty->hp = try_index;
- vty_history_print (vty);
- }
- /* Show previous command line history. */
- void
- vty_previous_line (struct vty *vty)
- {
- int try_index;
- try_index = vty->hp;
- if (try_index == 0)
- try_index = VTY_MAXHIST - 1;
- else
- try_index--;
- if (vty->hist[try_index] == NULL)
- return;
- else
- vty->hp = try_index;
- vty_history_print (vty);
- }
- /* This function redraw all of the command line character. */
- static void
- vty_redraw_line (struct vty *vty)
- {
- vty_write (vty, vty->buf, vty->length);
- vty->cp = vty->length;
- }
- /* Forward word. */
- static void
- vty_forward_word (struct vty *vty)
- {
- while (vty->cp != vty->length && vty->buf[vty->cp] != ' ')
- vty_forward_char (vty);
-
- while (vty->cp != vty->length && vty->buf[vty->cp] == ' ')
- vty_forward_char (vty);
- }
- /* Backward word without skipping training space. */
- static void
- vty_backward_pure_word (struct vty *vty)
- {
- while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ')
- vty_backward_char (vty);
- }
- /* Backward word. */
- static void
- vty_backward_word (struct vty *vty)
- {
- while (vty->cp > 0 && vty->buf[vty->cp - 1] == ' ')
- vty_backward_char (vty);
- while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ')
- vty_backward_char (vty);
- }
- /* When '^D' is typed at the beginning of the line we move to the down
- level. */
- static void
- vty_down_level (struct vty *vty)
- {
- vty_out (vty, "%s", VTY_NEWLINE);
- config_exit (NULL, vty, 0, NULL);
- vty_prompt (vty);
- vty->cp = 0;
- }
- /* When '^Z' is received from vty, move down to the enable mode. */
- void
- vty_end_config (struct vty *vty)
- {
- vty_out (vty, "%s", VTY_NEWLINE);
- switch (vty->node)
- {
- case VIEW_NODE:
- case ENABLE_NODE:
- /* Nothing to do. */
- break;
- case CONFIG_NODE:
- case INTERFACE_NODE:
- case ZEBRA_NODE:
- case RIP_NODE:
- case RIPNG_NODE:
- case BGP_NODE:
- case BGP_VPNV4_NODE:
- case BGP_IPV4_NODE:
- case BGP_IPV4M_NODE:
- case BGP_IPV6_NODE:
- case RMAP_NODE:
- case OSPF_NODE:
- case OSPF6_NODE:
- case KEYCHAIN_NODE:
- case KEYCHAIN_KEY_NODE:
- case MASC_NODE:
- case VTY_NODE:
- vty_config_unlock (vty);
- vty->node = ENABLE_NODE;
- break;
- default:
- /* Unknown node, we have to ignore it. */
- break;
- }
- vty_prompt (vty);
- vty->cp = 0;
- }
- /* Delete a charcter at the current point. */
- static void
- vty_delete_char (struct vty *vty)
- {
- int i;
- int size;
- if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE)
- return;
- if (vty->length == 0)
- {
- vty_down_level (vty);
- return;
- }
- if (vty->cp == vty->length)
- return; /* completion need here? */
- size = vty->length - vty->cp;
- vty->length--;
- memmove (&vty->buf[vty->cp], &vty->buf[vty->cp + 1], size - 1);
- vty->buf[vty->length] = ' ';
- vty_write (vty, &vty->buf[vty->cp], size - 1);
- vty_write (vty, &telnet_space_char, 1);
- for (i = 0; i < size; i++)
- vty_write (vty, &telnet_backward_char, 1);
- }
- /* Delete a character before the point. */
- static void
- vty_delete_backward_char (struct vty *vty)
- {
- if (vty->cp == 0)
- return;
- vty_backward_char (vty);
- vty_delete_char (vty);
- }
- /* Kill rest of line from current point. */
- static void
- vty_kill_line (struct vty *vty)
- {
- int i;
- int size;
- size = vty->length - vty->cp;
-
- if (size == 0)
- return;
- for (i = 0; i < size; i++)
- vty_write (vty, &telnet_space_char, 1);
- for (i = 0; i < size; i++)
- vty_write (vty, &telnet_backward_char, 1);
- memset (&vty->buf[vty->cp], 0, size);
- vty->length = vty->cp;
- }
- /* Kill line from the beginning. */
- static void
- vty_kill_line_from_beginning (struct vty *vty)
- {
- vty_beginning_of_line (vty);
- vty_kill_line (vty);
- }
- /* Delete a word before the point. */
- static void
- vty_forward_kill_word (struct vty *vty)
- {
- while (vty->cp != vty->length && vty->buf[vty->cp] == ' ')
- vty_delete_char (vty);
- while (vty->cp != vty->length && vty->buf[vty->cp] != ' ')
- vty_delete_char (vty);
- }
- /* Delete a word before the point. */
- static void
- vty_backward_kill_word (struct vty *vty)
- {
- while (vty->cp > 0 && vty->buf[vty->cp - 1] == ' ')
- vty_delete_backward_char (vty);
- while (vty->cp > 0 && vty->buf[vty->cp - 1] != ' ')
- vty_delete_backward_char (vty);
- }
- /* Transpose chars before or at the point. */
- static void
- vty_transpose_chars (struct vty *vty)
- {
- char c1, c2;
- /* If length is short or point is near by the beginning of line then
- return. */
- if (vty->length < 2 || vty->cp < 1)
- return;
- /* In case of point is located at the end of the line. */
- if (vty->cp == vty->length)
- {
- c1 = vty->buf[vty->cp - 1];
- c2 = vty->buf[vty->cp - 2];
- vty_backward_char (vty);
- vty_backward_char (vty);
- vty_self_insert_overwrite (vty, c1);
- vty_self_insert_overwrite (vty, c2);
- }
- else
- {
- c1 = vty->buf[vty->cp];
- c2 = vty->buf[vty->cp - 1];
- vty_backward_char (vty);
- vty_self_insert_overwrite (vty, c1);
- vty_self_insert_overwrite (vty, c2);
- }
- }
- /* Do completion at vty interface. */
- static void
- vty_complete_command (struct vty *vty)
- {
- int i;
- int ret;
- char **matched = NULL;
- vector vline;
- if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE)
- return;
- vline = cmd_make_strvec (vty->buf);
- if (vline == NULL)
- return;
- /* In case of 'help t'. */
- if (isspace ((int) vty->buf[vty->length - 1]))
- vector_set (vline, ' ');
- matched = cmd_complete_command (vline, vty, &ret);
-
- cmd_free_strvec (vline);
- vty_out (vty, "%s", VTY_NEWLINE);
- switch (ret)
- {
- case CMD_ERR_AMBIGUOUS:
- vty_out (vty, "%% Ambiguous command.%s", VTY_NEWLINE);
- vty_prompt (vty);
- vty_redraw_line (vty);
- break;
- case CMD_ERR_NO_MATCH:
- /* vty_out (vty, "%% There is no matched command.%s", VTY_NEWLINE); */
- vty_prompt (vty);
- vty_redraw_line (vty);
- break;
- case CMD_COMPLETE_FULL_MATCH:
- vty_prompt (vty);
- vty_redraw_line (vty);
- vty_backward_pure_word (vty);
- vty_insert_word_overwrite (vty, matched[0]);
- vty_self_insert (vty, ' ');
- XFREE (MTYPE_TMP, matched[0]);
- break;
- case CMD_COMPLETE_MATCH:
- vty_prompt (vty);
- vty_redraw_line (vty);
- vty_backward_pure_word (vty);
- vty_insert_word_overwrite (vty, matched[0]);
- XFREE (MTYPE_TMP, matched[0]);
- vector_only_index_free (matched);
- return;
- break;
- case CMD_COMPLETE_LIST_MATCH:
- for (i = 0; matched[i] != NULL; i++)
- {
- if (i != 0 && ((i % 6) == 0))
- vty_out (vty, "%s", VTY_NEWLINE);
- vty_out (vty, "%-10s ", matched[i]);
- XFREE (MTYPE_TMP, matched[i]);
- }
- vty_out (vty, "%s", VTY_NEWLINE);
- vty_prompt (vty);
- vty_redraw_line (vty);
- break;
- case CMD_ERR_NOTHING_TODO:
- vty_prompt (vty);
- vty_redraw_line (vty);
- break;
- default:
- break;
- }
- if (matched)
- vector_only_index_free (matched);
- }
- void
- vty_describe_fold (struct vty *vty, int cmd_width,
- int desc_width, struct desc *desc)
- {
- char *buf, *cmd, *p;
- int pos;
- cmd = desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd;
- if (desc_width <= 0)
- {
- vty_out (vty, " %-*s %s%s", cmd_width, cmd, desc->str, VTY_NEWLINE);
- return;
- }
- buf = XCALLOC (MTYPE_TMP, strlen (desc->str) + 1);
- for (p = desc->str; strlen (p) > desc_width; p += pos + 1)
- {
- for (pos = desc_width; pos > 0; pos--)
- if (*(p + pos) == ' ')
- break;
- if (pos == 0)
- break;
- strncpy (buf, p, pos);
- buf[pos] = ' ';
- vty_out (vty, " %-*s %s%s", cmd_width, cmd, buf, VTY_NEWLINE);
- cmd = "";
- }
- vty_out (vty, " %-*s %s%s", cmd_width, cmd, p, VTY_NEWLINE);
- XFREE (MTYPE_TMP, buf);
- }
- /* Describe matched command function. */
- static void
- vty_describe_command (struct vty *vty)
- {
- int ret;
- vector vline;
- vector describe;
- int i, width, desc_width;
- struct desc *desc, *desc_cr = NULL;
- vline = cmd_make_strvec (vty->buf);
- /* In case of '> ?'. */
- if (vline == NULL)
- {
- vline = vector_init (1);
- vector_set (vline, ' ');
- }
- else
- if (isspace ((int) vty->buf[vty->length - 1]))
- vector_set (vline, ' ');
- describe = cmd_describe_command (vline, vty, &ret);
- vty_out (vty, "%s", VTY_NEWLINE);
- /* Ambiguous error. */
- switch (ret)
- {
- case CMD_ERR_AMBIGUOUS:
- cmd_free_strvec (vline);
- vty_out (vty, "%% Ambiguous command.%s", VTY_NEWLINE);
- vty_prompt (vty);
- vty_redraw_line (vty);
- return;
- break;
- case CMD_ERR_NO_MATCH:
- cmd_free_strvec (vline);
- vty_out (vty, "%% There is no matched command.%s", VTY_NEWLINE);
- vty_prompt (vty);
- vty_redraw_line (vty);
- return;
- break;
- }
- /* Get width of command string. */
- width = 0;
- for (i = 0; i < vector_max (describe); i++)
- if ((desc = vector_slot (describe, i)) != NULL)
- {
- int len;
- if (desc->cmd[0] == ' ')
- continue;
- len = strlen (desc->cmd);
- if (desc->cmd[0] == '.')
- len--;
- if (width < len)
- width = len;
- }
- /* Get width of description string. */
- desc_width = vty->width - (width + 6);
- /* Print out description. */
- for (i = 0; i < vector_max (describe); i++)
- if ((desc = vector_slot (describe, i)) != NULL)
- {
- if (desc->cmd[0] == ' ')
- continue;
-
- if (strcmp (desc->cmd, "<cr>") == 0)
- {
- desc_cr = desc;
- continue;
- }
- if (!desc->str)
- vty_out (vty, " %-s%s",
- desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd,
- VTY_NEWLINE);
- else if (desc_width >= strlen (desc->str))
- vty_out (vty, " %-*s %s%s", width,
- desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd,
- desc->str, VTY_NEWLINE);
- else
- vty_describe_fold (vty, width, desc_width, desc);
- #if 0
- vty_out (vty, " %-*s %s%s", width
- desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd,
- desc->str ? desc->str : "", VTY_NEWLINE);
- #endif /* 0 */
- }
- if ((desc = desc_cr))
- {
- if (!desc->str)
- vty_out (vty, " %-s%s",
- desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd,
- VTY_NEWLINE);
- else if (desc_width >= strlen (desc->str))
- vty_out (vty, " %-*s %s%s", width,
- desc->cmd[0] == '.' ? desc->cmd + 1 : desc->cmd,
- desc->str, VTY_NEWLINE);
- else
- vty_describe_fold (vty, width, desc_width, desc);
- }
- cmd_free_strvec (vline);
- vector_free (describe);
- vty_prompt (vty);
- vty_redraw_line (vty);
- }
- void
- vty_clear_buf (struct vty *vty)
- {
- memset (vty->buf, 0, vty->max);
- }
- /* ^C stop current input and do not add command line to the history. */
- static void
- vty_stop_input (struct vty *vty)
- {
- vty->cp = vty->length = 0;
- vty_clear_buf (vty);
- vty_out (vty, "%s", VTY_NEWLINE);
- switch (vty->node)
- {
- case VIEW_NODE:
- case ENABLE_NODE:
- /* Nothing to do. */
- break;
- case CONFIG_NODE:
- case INTERFACE_NODE:
- case ZEBRA_NODE:
- case RIP_NODE:
- case RIPNG_NODE:
- case BGP_NODE:
- case RMAP_NODE:
- case OSPF_NODE:
- case OSPF6_NODE:
- case KEYCHAIN_NODE:
- case KEYCHAIN_KEY_NODE:
- case MASC_NODE:
- case VTY_NODE:
- vty_config_unlock (vty);
- vty->node = ENABLE_NODE;
- break;
- default:
- /* Unknown node, we have to ignore it. */
- break;
- }
- vty_prompt (vty);
- /* Set history pointer to the latest one. */
- vty->hp = vty->hindex;
- }
- /* Add current command line to the history buffer. */
- static void
- vty_hist_add (struct vty *vty)
- {
- int index;
- if (vty->length == 0)
- return;
- index = vty->hindex ? vty->hindex - 1 : VTY_MAXHIST - 1;
- /* Ignore the same string as previous one. */
- if (vty->hist[index])
- if (strcmp (vty->buf, vty->hist[index]) == 0)
- {
- vty->hp = vty->hindex;
- return;
- }
- /* Insert history entry. */
- if (vty->hist[vty->hindex])
- XFREE (MTYPE_VTY_HIST, vty->hist[vty->hindex]);
- vty->hist[vty->hindex] = XSTRDUP (MTYPE_VTY_HIST, vty->buf);
- /* History index rotation. */
- vty->hindex++;
- if (vty->hindex == VTY_MAXHIST)
- vty->hindex = 0;
- vty->hp = vty->hindex;
- }
- /* #define TELNET_OPTION_DEBUG */
- /* Get telnet window size. */
- static int
- vty_telnet_option (struct vty *vty, unsigned char *buf, int nbytes)
- {
- #ifdef TELNET_OPTION_DEBUG
- int i;
- for (i = 0; i < nbytes; i++)
- {
- switch (buf[i])
- {
- case IAC:
- vty_out (vty, "IAC ");
- break;
- case WILL:
- vty_out (vty, "WILL ");
- break;
- case WONT:
- vty_out (vty, "WONT ");
- break;
- case DO:
- vty_out (vty, "DO ");
- break;
- case DONT:
- vty_out (vty, "DONT ");
- break;
- case SB:
- vty_out (vty, "SB ");
- break;
- case SE:
- vty_out (vty, "SE ");
- break;
- case TELOPT_ECHO:
- vty_out (vty, "TELOPT_ECHO %s", VTY_NEWLINE);
- break;
- case TELOPT_SGA:
- vty_out (vty, "TELOPT_SGA %s", VTY_NEWLINE);
- break;
- case TELOPT_NAWS:
- vty_out (vty, "TELOPT_NAWS %s", VTY_NEWLINE);
- break;
- default:
- vty_out (vty, "%x ", buf[i]);
- break;
- }
- }
- vty_out (vty, "%s", VTY_NEWLINE);
- #endif /* TELNET_OPTION_DEBUG */
- switch (buf[0])
- {
- case SB:
- buffer_reset(vty->sb_buffer);
- vty->iac_sb_in_progress = 1;
- return 0;
- break;
- case SE:
- {
- char *buffer;
- int length;
- if (!vty->iac_sb_in_progress)
- return 0;
- buffer = (char *)vty->sb_buffer->head->data;
- length = vty->sb_buffer->length;
- if (buffer == NULL)
- return 0;
- if (buffer[0] == ' ')
- {
- vty->iac_sb_in_progress = 0;
- return 0;
- }
- switch (buffer[0])
- {
- case TELOPT_NAWS:
- if (length < 5)
- break;
- vty->width = buffer[2];
- vty->height = vty->lines >= 0 ? vty->lines : buffer[4];
- break;
- }
- vty->iac_sb_in_progress = 0;
- return 0;
- break;
- }
- default:
- break;
- }
- return 1;
- }
- /* Execute current command line. */
- static int
- vty_execute (struct vty *vty)
- {
- int ret;
- ret = CMD_SUCCESS;
- switch (vty->node)
- {
- case AUTH_NODE:
- case AUTH_ENABLE_NODE:
- vty_auth (vty, vty->buf);
- break;
- default:
- ret = vty_command (vty, vty->buf);
- if (vty->type == VTY_TERM)
- vty_hist_add (vty);
- break;
- }
- /* Clear command line buffer. */
- vty->cp = vty->length = 0;
- vty_clear_buf (vty);
- if (vty->status != VTY_CLOSE
- && vty->status != VTY_START
- && vty->status != VTY_CONTINUE)
- vty_prompt (vty);
- return ret;
- }
- #define CONTROL(X) ((X) - '@')
- #define VTY_NORMAL 0
- #define VTY_PRE_ESCAPE 1
- #define VTY_ESCAPE 2
- /* Escape character command map. */
- static void
- vty_escape_map (unsigned char c, struct vty *vty)
- {
- switch (c)
- {
- case ('A'):
- vty_previous_line (vty);
- break;
- case ('B'):
- vty_next_line (vty);
- break;
- case ('C'):
- vty_forward_char (vty);
- break;
- case ('D'):
- vty_backward_char (vty);
- break;
- default:
- break;
- }
- /* Go back to normal mode. */
- vty->escape = VTY_NORMAL;
- }
- /* Quit print out to the buffer. */
- static void
- vty_buffer_reset (struct vty *vty)
- {
- buffer_reset (vty->obuf);
- vty_prompt (vty);
- vty_redraw_line (vty);
- }
- /* Read data via vty socket. */
- static int
- vty_read (struct thread *thread)
- {
- int i;
- int ret;
- int nbytes;
- unsigned char buf[VTY_READ_BUFSIZ];
- int vty_sock = THREAD_FD (thread);
- struct vty *vty = THREAD_ARG (thread);
- vty->t_read = NULL;
- /* Read raw data from socket */
- nbytes = read (vty->fd, buf, VTY_READ_BUFSIZ);
- if (nbytes <= 0)
- vty->status = VTY_CLOSE;
- for (i = 0; i < nbytes; i++)
- {
- if (buf[i] == IAC)
- {
- if (!vty->iac)
- {
- vty->iac = 1;
- continue;
- }
- else
- {
- vty->iac = 0;
- }
- }
-
- if (vty->iac_sb_in_progress && !vty->iac)
- {
- buffer_putc(vty->sb_buffer, buf[i]);
- continue;
- }
- if (vty->iac)
- {
- /* In case of telnet command */
- ret = vty_telnet_option (vty, buf + i, nbytes - i);
- vty->iac = 0;
- i += ret;
- continue;
- }
- if (vty->status == VTY_MORE)
- {
- switch (buf[i])
- {
- case CONTROL('C'):
- case 'q':
- case 'Q':
- if (vty->output_func)
- (*vty->output_func) (vty, 1);
- vty_buffer_reset (vty);
- break;
- #if 1 /* More line for "show ip bgp" is fixed */
- case 'n':
- case 'r':
- vty->status = VTY_MORELINE;
- if (vty->output_func)
- (*vty->output_func) (vty, 0);
- break;
- #endif
- default:
- if (vty->output_func)
- (*vty->output_func) (vty, 0);
- break;
- }
- continue;
- }
- /* Escape character. */
- if (vty->escape == VTY_ESCAPE)
- {
- vty_escape_map (buf[i], vty);
- continue;
- }
- /* Pre-escape status. */
- if (vty->escape == VTY_PRE_ESCAPE)
- {
- switch (buf[i])
- {
- case '[':
- vty->escape = VTY_ESCAPE;
- break;
- case 'b':
- vty_backward_word (vty);
- vty->escape = VTY_NORMAL;
- break;
- case 'f':
- vty_forward_word (vty);
- vty->escape = VTY_NORMAL;
- break;
- case 'd':
- vty_forward_kill_word (vty);
- vty->escape = VTY_NORMAL;
- break;
- case CONTROL('H'):
- case 0x7f:
- vty_backward_kill_word (vty);
- vty->escape = VTY_NORMAL;
- break;
- default:
- vty->escape = VTY_NORMAL;
- break;
- }
- continue;
- }
- switch (buf[i])
- {
- case CONTROL('A'):
- vty_beginning_of_line (vty);
- break;
- case CONTROL('B'):
- vty_backward_char (vty);
- break;
- case CONTROL('C'):
- vty_stop_input (vty);
- break;
- case CONTROL('D'):
- vty_delete_char (vty);
- break;
- case CONTROL('E'):
- vty_end_of_line (vty);
- break;
- case CONTROL('F'):
- vty_forward_char (vty);
- break;
- case CONTROL('H'):
- case 0x7f:
- vty_delete_backward_char (vty);
- break;
- case CONTROL('K'):
- vty_kill_line (vty);
- break;
- case CONTROL('N'):
- vty_next_line (vty);
- break;
- case CONTROL('P'):
- vty_previous_line (vty);
- break;
- case CONTROL('T'):
- vty_transpose_chars (vty);
- break;
- case CONTROL('U'):
- vty_kill_line_from_beginning (vty);
- break;
- case CONTROL('W'):
- vty_backward_kill_word (vty);
- break;
- case CONTROL('Z'):
- vty_end_config (vty);
- break;
- case 'n':
- case 'r':
- vty_out (vty, "%s", VTY_NEWLINE);
- vty_execute (vty);
- break;
- case 't':
- vty_complete_command (vty);
- break;
- case '?':
- if (vty->node == AUTH_NODE || vty->node == AUTH_ENABLE_NODE)
- vty_self_insert (vty, buf[i]);
- else
- vty_describe_command (vty);
- break;
- case ' 33':
- if (i + 1 < nbytes && buf[i + 1] == '[')
- {
- vty->escape = VTY_ESCAPE;
- i++;
- }
- else
- vty->escape = VTY_PRE_ESCAPE;
- break;
- default:
- if (buf[i] > 31 && buf[i] < 127)
- vty_self_insert (vty, buf[i]);
- break;
- }
- }
- /* Check status. */
- if (vty->status == VTY_CLOSE)
- vty_close (vty);
- else
- {
- vty_event (VTY_WRITE, vty_sock, vty);
- vty_event (VTY_READ, vty_sock, vty);
- }
- return 0;
- }
- /* Flush buffer to the vty. */
- static int
- vty_flush (struct thread *thread)
- {
- int erase;
- int dont_more;
- int vty_sock = THREAD_FD (thread);
- struct vty *vty = THREAD_ARG (thread);
- vty->t_write = NULL;
- /* Tempolary disable read thread. */
- if (vty->lines == 0)
- if (vty->t_read)
- {
- thread_cancel (vty->t_read);
- vty->t_read = NULL;
- }
- /* Function execution continue. */
- if (vty->status == VTY_START || vty->status == VTY_CONTINUE)
- {
- if (vty->status == VTY_CONTINUE && vty->output_func)
- erase = 1;
- else
- erase = 0;
- if (vty->output_func == NULL)
- dont_more = 1;
- else
- dont_more = 0;
- if (vty->lines == 0)
- {
- erase = 0;
- dont_more = 1;
- }
- buffer_flush_vty_all (vty->obuf, vty->fd, erase, dont_more);
- if (vty->status == VTY_CLOSE)
- {
- vty_close (vty);
- return 0;
- }
- if (vty->output_func == NULL)
- {
- vty->status = VTY_NORMAL;
- vty_prompt (vty);
- vty_event (VTY_WRITE, vty_sock, vty);
- }
- else
- vty->status = VTY_MORE;
- if (vty->lines == 0)
- {
- if (vty->output_func == NULL)
- vty_event (VTY_READ, vty_sock, vty);
- else
- {
- if (vty->output_func)
- (*vty->output_func) (vty, 0);
- vty_event (VTY_WRITE, vty_sock, vty);
- }
- }
- }
- else
- {
- if (vty->status == VTY_MORE || vty->status == VTY_MORELINE)
- erase = 1;
- else
- erase = 0;
- if (vty->lines == 0)
- buffer_flush_window (vty->obuf, vty->fd, vty->width, 25, 0, 1);
- else if (vty->status == VTY_MORELINE)
- buffer_flush_window (vty->obuf, vty->fd, vty->width, 1, erase, 0);
- else
- buffer_flush_window (vty->obuf, vty->fd, vty->width,
- vty->lines >= 0 ? vty->lines : vty->height,
- erase, 0);
-
- if (buffer_empty (vty->obuf))
- {
- if (vty->status == VTY_CLOSE)
- vty_close (vty);
- else
- {
- vty->status = VTY_NORMAL;
-
- if (vty->lines == 0)
- vty_event (VTY_READ, vty_sock, vty);
- }
- }
- else
- {
- vty->status = VTY_MORE;
- if (vty->lines == 0)
- vty_event (VTY_WRITE, vty_sock, vty);
- }
- }
- return 0;
- }
- /* Create new vty structure. */
- struct vty *
- vty_create (int vty_sock, union sockunion *su)
- {
- struct vty *vty;
- /* Allocate new vty structure and set up default values. */
- vty = vty_new ();
- vty->fd = vty_sock;
- vty->type = VTY_TERM;
- vty->address = sockunion_su2str (su);
- if (no_password_check)
- {
- if (host.advanced)
- vty->node = ENABLE_NODE;
- else
- vty->node = VIEW_NODE;
- }
- else
- vty->node = AUTH_NODE;
- vty->fail = 0;
- vty->cp = 0;
- vty_clear_buf (vty);
- vty->length = 0;
- memset (vty->hist, 0, sizeof (vty->hist));
- vty->hp = 0;
- vty->hindex = 0;
- vector_set_index (vtyvec, vty_sock, vty);
- vty->status = VTY_NORMAL;
- vty->v_timeout = vty_timeout_val;
- if (host.lines >= 0)
- vty->lines = host.lines;
- else
- vty->lines = -1;
- vty->iac = 0;
- vty->iac_sb_in_progress = 0;
- vty->sb_buffer = buffer_new (1024);
- if (! no_password_check)
- {
- /* Vty is not available if password isn't set. */
- if (host.password == NULL && host.password_encrypt == NULL)
- {
- vty_out (vty, "Vty password is not set.%s", VTY_NEWLINE);
- vty->status = VTY_CLOSE;
- vty_close (vty);
- return NULL;
- }
- }
- /* Say hello to the world. */
- vty_hello (vty);
- if (! no_password_check)
- vty_out (vty, "%sUser Access Verification%s%s", VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);
- /* Setting up terminal. */
- vty_will_echo (vty);
- vty_will_suppress_go_ahead (vty);
- vty_dont_linemode (vty);
- vty_do_window_size (vty);
- /* vty_dont_lflow_ahead (vty); */
- vty_prompt (vty);
- /* Add read/write thread. */
- vty_event (VTY_WRITE, vty_sock, vty);
- vty_event (VTY_READ, vty_sock, vty);
- return vty;
- }
- /* Accept connection from the network. */
- static int
- vty_accept (struct thread *thread)
- {
- int vty_sock;
- struct vty *vty;
- union sockunion su;
- int ret;
- unsigned int on;
- int accept_sock;
- struct prefix *p = NULL;
- struct access_list *acl = NULL;
- accept_sock = THREAD_FD (thread);
- /* We continue hearing vty socket. */
- vty_event (VTY_SERV, accept_sock, NULL);
- memset (&su, 0, sizeof (union sockunion));
- /* We can handle IPv4 or IPv6 socket. */
- vty_sock = sockunion_accept (accept_sock, &su);
- if (vty_sock < 0)
- {
- zlog_warn ("can't accept vty socket : %s", strerror (errno));
- return -1;
- }
- p = sockunion2hostprefix (&su);
- /* VTY's accesslist apply. */
- if (p->family == AF_INET && vty_accesslist_name)
- {
- if ((acl = access_list_lookup (AFI_IP, vty_accesslist_name)) &&
- (access_list_apply (acl, p) == FILTER_DENY))
- {
- char *buf;
- zlog (NULL, LOG_INFO, "Vty connection refused from %s",
- (buf = sockunion_su2str (&su)));
- free (buf);
- close (vty_sock);
-
- /* continue accepting connections */
- vty_event (VTY_SERV, accept_sock, NULL);
-
- prefix_free (p);
- return 0;
- }
- }
- #ifdef HAVE_IPV6
- /* VTY's ipv6 accesslist apply. */
- if (p->family == AF_INET6 && vty_ipv6_accesslist_name)
- {
- if ((acl = access_list_lookup (AFI_IP6, vty_ipv6_accesslist_name)) &&
- (access_list_apply (acl, p) == FILTER_DENY))
- {
- char *buf;
- zlog (NULL, LOG_INFO, "Vty connection refused from %s",
- (buf = sockunion_su2str (&su)));
- free (buf);
- close (vty_sock);
-
- /* continue accepting connections */
- vty_event (VTY_SERV, accept_sock, NULL);
-
- prefix_free (p);
- return 0;
- }
- }
- #endif /* HAVE_IPV6 */
-
- prefix_free (p);
- on = 1;
- ret = setsockopt (vty_sock, IPPROTO_TCP, TCP_NODELAY,
- (char *) &on, sizeof (on));
- if (ret < 0)
- zlog (NULL, LOG_INFO, "can't set sockopt to vty_sock : %s",
- strerror (errno));
- vty = vty_create (vty_sock, &su);
- return 0;
- }
- #if defined(HAVE_IPV6) || defined(HAVE_GETADDRINFO)
- void
- vty_serv_sock_addrinfo (const char *hostname, unsigned short port)
- {
- int ret;
- struct addrinfo req;
- struct addrinfo *ainfo;
- struct addrinfo *ainfo_save;
- int sock;
- char port_str[BUFSIZ];
- memset (&req, 0, sizeof (struct addrinfo));
- req.ai_flags = AI_PASSIVE;
- req.ai_family = AF_UNSPEC;
- req.ai_socktype = SOCK_STREAM;
- sprintf (port_str, "%d", port);
- port_str[sizeof (port_str) - 1] = ' ';
- ret = getaddrinfo (hostname, port_str, &req, &ainfo);
- if (ret != 0)
- {
- fprintf (stderr, "getaddrinfo failed: %sn", gai_strerror (ret));
- exit (1);
- }
- ainfo_save = ainfo;
- do
- {
- if (ainfo->ai_family != AF_INET
- #ifdef HAVE_IPV6
- && ainfo->ai_family != AF_INET6
- #endif /* HAVE_IPV6 */
- )
- continue;
- sock = socket (ainfo->ai_family, ainfo->ai_socktype, ainfo->ai_protocol);
- if (sock < 0)
- continue;
- sockopt_reuseaddr (sock);
- sockopt_reuseport (sock);
- ret = bind (sock, ainfo->ai_addr, ainfo->ai_addrlen);
- if (ret < 0)
- {
- close (sock); /* Avoid sd leak. */
- continue;
- }
- ret = listen (sock, 3);
- if (ret < 0)
- {
- close (sock); /* Avoid sd leak. */
- continue;
- }
- vty_event (VTY_SERV, sock, NULL);
- }
- while ((ainfo = ainfo->ai_next) != NULL);
- freeaddrinfo (ainfo_save);
- }
- #endif /* ! (defined(HAVE_IPV6) || defined(HAVE_GETADDRINFO)) */
- /* Make vty server socket. */
- void
- vty_serv_sock_family (unsigned short port, int family)
- {
- int ret;
- union sockunion su;
- int accept_sock;
- memset (&su, 0, sizeof (union sockunion));
- su.sa.sa_family = family;
- /* Make new socket. */
- accept_sock = sockunion_stream_socket (&su);
- if (accept_sock < 0)
- return;
- /* This is server, so reuse address. */
- sockopt_reuseaddr (accept_sock);
- sockopt_reuseport (accept_sock);
- /* Bind socket to universal address and given port. */
- ret = sockunion_bind (accept_sock, &su, port, NULL);
- if (ret < 0)
- {
- close (accept_sock); /* Avoid sd leak. */
- return;
- }
- /* Listen socket under queue 3. */
- ret = listen (accept_sock, 3);
- if (ret < 0)
- {
- zlog (NULL, LOG_WARNING, "can't listen socket");
- close (accept_sock); /* Avoid sd leak. */
- return;
- }
- /* Add vty server event. */
- vty_event (VTY_SERV, accept_sock, NULL);
- }
- #ifdef VTYSH
- /* For sockaddr_un. */
- #include <sys/un.h>
- /* VTY shell UNIX domain socket. */
- void
- vty_serv_un (char *path)
- {
- int ret;
- int sock, len;
- struct sockaddr_un serv;
- mode_t old_mask;
- /* First of all, unlink existing socket */
- unlink (path);
- /* Set umask */
- old_mask = umask (0077);
- /* Make UNIX domain socket. */
- sock = socket (AF_UNIX, SOCK_STREAM, 0);
- if (sock < 0)
- {
- perror ("sock");
- return;
- }
- /* Make server socket. */
- memset (&serv, 0, sizeof (struct sockaddr_un));
- serv.sun_family = AF_UNIX;
- strncpy (serv.sun_path, path, strlen (path));
- #ifdef HAVE_SUN_LEN
- len = serv.sun_len = SUN_LEN(&serv);
- #else
- len = sizeof (serv.sun_family) + strlen (serv.sun_path);
- #endif /* HAVE_SUN_LEN */
- ret = bind (sock, (struct sockaddr *) &serv, len);
- if (ret < 0)
- {
- perror ("bind");
- close (sock); /* Avoid sd leak. */
- return;
- }
- ret = listen (sock, 5);
- if (ret < 0)
- {
- perror ("listen");
- close (sock); /* Avoid sd leak. */
- return;
- }
- umask (old_mask);
- vty_event (VTYSH_SERV, sock, NULL);
- }
- /* #define VTYSH_DEBUG 1 */
- static int
- vtysh_accept (struct thread *thread)
- {
- int accept_sock;
- int sock;
- int client_len;
- struct sockaddr_un client;
- struct vty *vty;
-
- accept_sock = THREAD_FD (thread);
- vty_event (VTYSH_SERV, accept_sock, NULL);
- memset (&client, 0, sizeof (struct sockaddr_un));
- client_len = sizeof (struct sockaddr_un);
- sock = accept (accept_sock, (struct sockaddr *) &client, &client_len);
- if (sock < 0)
- {
- zlog_warn ("can't accept vty socket : %s", strerror (errno));
- return -1;
- }
- #ifdef VTYSH_DEBUG
- printf ("VTY shell acceptn");
- #endif /* VTYSH_DEBUG */
- vty = vty_new ();
- vty->fd = sock;
- vty->type = VTY_SHELL_SERV;
- vty->node = VIEW_NODE;
- vty_event (VTYSH_READ, sock, vty);
- return 0;
- }
- static int
- vtysh_read (struct thread *thread)
- {
- int ret;
- int sock;
- int nbytes;
- struct vty *vty;
- unsigned char buf[VTY_READ_BUFSIZ];
- u_char header[4] = {0, 0, 0, 0};
- sock = THREAD_FD (thread);
- vty = THREAD_ARG (thread);
- vty->t_read = NULL;
- nbytes = read (sock, buf, VTY_READ_BUFSIZ);
- if (nbytes <= 0)
- {
- vty_close (vty);
- #ifdef VTYSH_DEBUG
- printf ("close vtyshn");
- #endif /* VTYSH_DEBUG */
- return 0;
- }
- #ifdef VTYSH_DEBUG
- printf ("line: %sn", buf);
- #endif /* VTYSH_DEBUG */
- vty_ensure (vty, nbytes);
- memcpy (vty->buf, buf, nbytes);
-
- /* Pass this line to parser. */
- ret = vty_execute (vty);
- vty_clear_buf (vty);
- /* Return result. */
- #ifdef VTYSH_DEBUG
- printf ("result: %dn", ret);
- printf ("vtysh node: %dn", vty->node);
- #endif /* VTYSH_DEBUG */
- header[3] = ret;
- write (vty->fd, header, 4);
- vty_event (VTYSH_READ, sock, vty);
- return 0;
- }
- #endif /* VTYSH */
- /* Determine address family to bind. */
- void
- vty_serv_sock (const char *hostname, unsigned short port, char *path)
- {
- /* If port is set to 0, do not listen on TCP/IP at all! */
- if (port)
- {
- #if defined(HAVE_IPV6) || defined(HAVE_GETADDRINFO)
- vty_serv_sock_addrinfo (hostname, port);
- #else /* ! (defined(HAVE_IPV6) || defined(HAVE_GETADDRINFO)) */
- vty_serv_sock_family (port, AF_INET);
- #endif /* HAVE_IPV6 */
- }
- #ifdef VTYSH
- vty_serv_un (path);
- #endif /* VTYSH */
- }
- /* Close vty interface. */
- void
- vty_close (struct vty *vty)
- {
- int i;
- /* Cancel threads.*/
- if (vty->t_read)
- thread_cancel (vty->t_read);
- if (vty->t_write)
- thread_cancel (vty->t_write);
- if (vty->t_timeout)
- thread_cancel (vty->t_timeout);
- if (vty->t_output)
- thread_cancel (vty->t_output);
- /* Flush buffer. */
- if (! buffer_empty (vty->obuf))
- buffer_flush_all (vty->obuf, vty->fd);
- /* Free input buffer. */
- buffer_free (vty->obuf);
- /* Free SB buffer. */
- if (vty->sb_buffer)
- buffer_free (vty->sb_buffer);
- /* Free command history. */
- for (i = 0; i < VTY_MAXHIST; i++)
- if (vty->hist[i])
- XFREE (MTYPE_VTY_HIST, vty->hist[i]);
- /* Unset vector. */
- vector_unset (vtyvec, vty->fd);
- /* Close socket. */
- if (vty->fd > 0)
- close (vty->fd);
- if (vty->address)
- XFREE (0, vty->address);
- if (vty->buf)
- XFREE (MTYPE_VTY, vty->buf);
- /* Check configure. */
- vty_config_unlock (vty);
- /* OK free vty. */
- XFREE (MTYPE_VTY, vty);
- }
- /* When time out occur output message then close connection. */
- static int
- vty_timeout (struct thread *thread)
- {
- struct vty *vty;
- vty = THREAD_ARG (thread);
- vty->t_timeout = NULL;
- vty->v_timeout = 0;
- /* Clear buffer*/
- buffer_reset (vty->obuf);
- vty_out (vty, "%sVty connection is timed out.%s", VTY_NEWLINE, VTY_NEWLINE);
- /* Close connection. */
- vty->status = VTY_CLOSE;
- vty_close (vty);
- return 0;
- }
- /* Read up configuration file from file_name. */
- static void
- vty_read_file (FILE *confp)
- {
- int ret;
- struct vty *vty;
- vty = vty_new ();
- vty->fd = 0; /* stdout */
- vty->type = VTY_TERM;
- vty->node = CONFIG_NODE;
-
- /* Execute configuration file */
- ret = config_from_file (vty, confp);
- if (ret != CMD_SUCCESS)
- {
- switch (ret)
- {
- case CMD_ERR_AMBIGUOUS:
- fprintf (stderr, "Ambiguous command.n");
- break;
- case CMD_ERR_NO_MATCH:
- fprintf (stderr, "There is no such command.n");
- break;
- }
- fprintf (stderr, "Error occured during reading below line.n%sn",
- vty->buf);
- vty_close (vty);
- exit (1);
- }
- vty_close (vty);
- }
- FILE *
- vty_use_backup_config (char *fullpath)
- {
- char *fullpath_sav, *fullpath_tmp;
- FILE *ret = NULL;
- struct stat buf;
- int tmp, sav;
- int c;
- char buffer[512];
-
- fullpath_sav = malloc (strlen (fullpath) + strlen (CONF_BACKUP_EXT) + 1);
- strcpy (fullpath_sav, fullpath);
- strcat (fullpath_sav, CONF_BACKUP_EXT);
- if (stat (fullpath_sav, &buf) == -1)
- {
- free (fullpath_sav);
- return NULL;
- }
- fullpath_tmp = malloc (strlen (fullpath) + 8);
- sprintf (fullpath_tmp, "%s.XXXXXX", fullpath);
-
- /* Open file to configuration write. */
- tmp = mkstemp (fullpath_tmp);
- if (tmp < 0)
- {
- free (fullpath_sav);
- free (fullpath_tmp);
- return NULL;
- }
- sav = open (fullpath_sav, O_RDONLY);
- if (sav < 0)
- {
- free (fullpath_sav);
- free (fullpath_tmp);
- unlink (fullpath_tmp);
- return NULL;
- }
-
- while((c = read (sav, buffer, 512)) > 0)
- write (tmp, buffer, c);
-
- close (sav);
- close (tmp);
-
- if (link (fullpath_tmp, fullpath) == 0)
- ret = fopen (fullpath, "r");
- unlink (fullpath_tmp);
-
- free (fullpath_sav);
- free (fullpath_tmp);
- return fopen (fullpath, "r");
- }
- /* Read up configuration file from file_name. */
- void
- vty_read_config (char *config_file,
- char *config_current_dir,
- char *config_default_dir)
- {
- char *cwd;
- FILE *confp = NULL;
- char *fullpath;
- /* If -f flag specified. */
- if (config_file != NULL)
- {
- if (! IS_DIRECTORY_SEP (config_file[0]))
- {
- cwd = getcwd (NULL, MAXPATHLEN);
- fullpath = XMALLOC (MTYPE_TMP,
- strlen (cwd) + strlen (config_file) + 2);
- sprintf (fullpath, "%s/%s", cwd, config_file);
- }
- else
- fullpath = config_file;
- confp = fopen (fullpath, "r");
- if (confp == NULL)
- {
- confp = vty_use_backup_config (fullpath);
- if (confp)
- fprintf (stderr, "WARNING: using backup configuration file!n");
- else
- {
- fprintf (stderr, "can't open configuration file [%s]n",
- config_file);
- exit(1);
- }
- }
- }
- else
- {
- /* Relative path configuration file open. */
- if (config_current_dir)
- {
- confp = fopen (config_current_dir, "r");
- if (confp == NULL)
- {
- confp = vty_use_backup_config (config_current_dir);
- if (confp)
- fprintf (stderr, "WARNING: using backup configuration file!n");
- }
- }
- /* If there is no relative path exists, open system default file. */
- if (confp == NULL)
- {
- #ifdef VTYSH
- int ret;
- struct stat conf_stat;
- /* !!!!PLEASE LEAVE!!!!
- This is NEEDED for use with vtysh -b, or else you can get
- a real configuration food fight with a lot garbage in the
- merged configuration file it creates coming from the per
- daemon configuration files. This also allows the daemons
- to start if there default configuration file is not
- present or ignore them, as needed when using vtysh -b to
- configure the daemons at boot - MAG */
- /* Stat for vtysh Zebra.conf, if found startup and wait for
- boot configuration */
- if ( strstr(config_default_dir, "vtysh") == NULL)
- {
- ret = stat (integrate_default, &conf_stat);
- if (ret >= 0)
- {
- return;
- }
- }
- #endif /* VTYSH */
- confp = fopen (config_default_dir, "r");
- if (confp == NULL)
- {
- confp = vty_use_backup_config (config_default_dir);
- if (confp)
- {
- fprintf (stderr, "WARNING: using backup configuration file!n");
- fullpath = config_default_dir;
- }
- else
- {
- fprintf (stderr, "can't open configuration file [%s]n",
- config_default_dir);
- exit (1);
- }
- }
- else
- fullpath = config_default_dir;
- }
- else
- {
- /* Rleative path configuration file. */
- cwd = getcwd (NULL, MAXPATHLEN);
- fullpath = XMALLOC (MTYPE_TMP,
- strlen (cwd) + strlen (config_current_dir) + 2);
- sprintf (fullpath, "%s/%s", cwd, config_current_dir);
- }
- }
- vty_read_file (confp);
- fclose (confp);
- host_config_set (fullpath);
- }
- /* Small utility function which output log to the VTY. */
- void
- vty_log (const char *proto_str, const char *format, va_list va)
- {
- int i;
- struct vty *vty;
- for (i = 0; i < vector_max (vtyvec); i++)
- if ((vty = vector_slot (vtyvec, i)) != NULL)
- if (vty->monitor)
- vty_log_out (vty, proto_str, format, va);
- }
- int
- vty_config_lock (struct vty *vty)
- {
- if (vty_config == 0)
- {
- vty->config = 1;
- vty_config = 1;
- }
- return vty->config;
- }
- int
- vty_config_unlock (struct vty *vty)
- {
- if (vty_config == 1 && vty->config == 1)
- {
- vty->config = 0;
- vty_config = 0;
- }
- return vty->config;
- }
- /* Master of the threads. */
- extern struct thread_master *master;
- /* struct thread_master *master; */
- static void
- vty_event (enum event event, int sock, struct vty *vty)
- {
- struct thread *vty_serv_thread;
- switch (event)
- {
- case VTY_SERV:
- vty_serv_thread = thread_add_read (master, vty_accept, vty, sock);
- vector_set_index (Vvty_serv_thread, sock, vty_serv_thread);
- break;
- #ifdef VTYSH
- case VTYSH_SERV:
- thread_add_read (master, vtysh_accept, vty, sock);
- break;
- case VTYSH_READ:
- thread_add_read (master, vtysh_read, vty, sock);
- break;
- #endif /* VTYSH */
- case VTY_READ:
- vty->t_read = thread_add_read (master, vty_read, vty, sock);
- /* Time out treatment. */
- if (vty->v_timeout)
- {
- if (vty->t_timeout)
- thread_cancel (vty->t_timeout);
- vty->t_timeout =
- thread_add_timer (master, vty_timeout, vty, vty->v_timeout);
- }
- break;
- case VTY_WRITE:
- if (! vty->t_write)
- vty->t_write = thread_add_write (master, vty_flush, vty, sock);
- break;
- case VTY_TIMEOUT_RESET:
- if (vty->t_timeout)
- {
- thread_cancel (vty->t_timeout);
- vty->t_timeout = NULL;
- }
- if (vty->v_timeout)
- {
- vty->t_timeout =
- thread_add_timer (master, vty_timeout, vty, vty->v_timeout);
- }
- break;
- }
- }
- DEFUN (config_who,
- config_who_cmd,
- "who",
- "Display who is on vtyn")
- {
- int i;
- struct vty *v;
- for (i = 0; i < vector_max (vtyvec); i++)
- if ((v = vector_slot (vtyvec, i)) != NULL)
- vty_out (vty, "%svty[%d] connected from %s.%s",
- v->config ? "*" : " ",
- i, v->address, VTY_NEWLINE);
- return CMD_SUCCESS;
- }
- /* Move to vty configuration mode. */
- DEFUN (line_vty,
- line_vty_cmd,
- "line vty",
- "Configure a terminal linen"
- "Virtual terminaln")
- {
- vty->node = VTY_NODE;
- return CMD_SUCCESS;
- }
- /* Set time out value. */
- int
- exec_timeout (struct vty *vty, char *min_str, char *sec_str)
- {
- unsigned long timeout = 0;
- /* min_str and sec_str are already checked by parser. So it must be
- all digit string. */
- if (min_str)
- {
- timeout = strtol (min_str, NULL, 10);
- timeout *= 60;
- }
- if (sec_str)
- timeout += strtol (sec_str, NULL, 10);
- vty_timeout_val = timeout;
- vty->v_timeout = timeout;
- vty_event (VTY_TIMEOUT_RESET, 0, vty);
- return CMD_SUCCESS;
- }
- DEFUN (exec_timeout_min,
- exec_timeout_min_cmd,
- "exec-timeout <0-35791>",
- "Set timeout valuen"
- "Timeout value in minutesn")
- {
- return exec_timeout (vty, argv[0], NULL);
- }
- DEFUN (exec_timeout_sec,
- exec_timeout_sec_cmd,
- "exec-timeout <0-35791> <0-2147483>",
- "Set the EXEC timeoutn"
- "Timeout in minutesn"
- "Timeout in secondsn")
- {
- return exec_timeout (vty, argv[0], argv[1]);
- }
- DEFUN (no_exec_timeout,
- no_exec_timeout_cmd,
- "no exec-timeout",
- NO_STR
- "Set the EXEC timeoutn")
- {
- return exec_timeout (vty, NULL, NULL);
- }
- /* Set vty access class. */
- DEFUN (vty_access_class,
- vty_access_class_cmd,
- "access-class WORD",
- "Filter connections based on an IP access listn"
- "IP access listn")
- {
- if (vty_accesslist_name)
- XFREE(MTYPE_VTY, vty_accesslist_name);
- vty_accesslist_name = XSTRDUP(MTYPE_VTY, argv[0]);
- return CMD_SUCCESS;
- }
- /* Clear vty access class. */
- DEFUN (no_vty_access_class,
- no_vty_access_class_cmd,
- "no access-class [WORD]",
- NO_STR
- "Filter connections based on an IP access listn"
- "IP access listn")
- {
- if (! vty_accesslist_name || (argc && strcmp(vty_accesslist_name, argv[0])))
- {
- vty_out (vty, "Access-class is not currently applied to vty%s",
- VTY_NEWLINE);
- return CMD_WARNING;
- }
- XFREE(MTYPE_VTY, vty_accesslist_name);
- vty_accesslist_name = NULL;
- return CMD_SUCCESS;
- }
- #ifdef HAVE_IPV6
- /* Set vty access class. */
- DEFUN (vty_ipv6_access_class,
- vty_ipv6_access_class_cmd,
- "ipv6 access-class WORD",
- IPV6_STR
- "Filter connections based on an IP access listn"
- "IPv6 access listn")
- {
- if (vty_ipv6_accesslist_name)
- XFREE(MTYPE_VTY, vty_ipv6_accesslist_name);
- vty_ipv6_accesslist_name = XSTRDUP(MTYPE_VTY, argv[0]);
- return CMD_SUCCESS;
- }
- /* Clear vty access class. */
- DEFUN (no_vty_ipv6_access_class,
- no_vty_ipv6_access_class_cmd,
- "no ipv6 access-class [WORD]",
- NO_STR
- IPV6_STR
- "Filter connections based on an IP access listn"
- "IPv6 access listn")
- {
- if (! vty_ipv6_accesslist_name ||
- (argc && strcmp(vty_ipv6_accesslist_name, argv[0])))
- {
- vty_out (vty, "IPv6 access-class is not currently applied to vty%s",
- VTY_NEWLINE);
- return CMD_WARNING;
- }
- XFREE(MTYPE_VTY, vty_ipv6_accesslist_name);
- vty_ipv6_accesslist_name = NULL;
- return CMD_SUCCESS;
- }
- #endif /* HAVE_IPV6 */
- /* vty login. */
- DEFUN (vty_login,
- vty_login_cmd,
- "login",
- "Enable password checkingn")
- {
- no_password_check = 0;
- return CMD_SUCCESS;
- }
- DEFUN (no_vty_login,
- no_vty_login_cmd,
- "no login",
- NO_STR
- "Enable password checkingn")
- {
- no_password_check = 1;
- return CMD_SUCCESS;
- }
- DEFUN (service_advanced_vty,
- service_advanced_vty_cmd,
- "service advanced-vty",
- "Set up miscellaneous servicen"
- "Enable advanced mode vty interfacen")
- {
- host.advanced = 1;
- return CMD_SUCCESS;
- }
- DEFUN (no_service_advanced_vty,
- no_service_advanced_vty_cmd,
- "no service advanced-vty",
- NO_STR
- "Set up miscellaneous servicen"
- "Enable advanced mode vty interfacen")
- {
- host.advanced = 0;
- return CMD_SUCCESS;
- }
- DEFUN (terminal_monitor,
- terminal_monitor_cmd,
- "terminal monitor",
- "Set terminal line parametersn"
- "Copy debug output to the current terminal linen")
- {
- vty->monitor = 1;
- return CMD_SUCCESS;
- }
- DEFUN (terminal_no_monitor,
- terminal_no_monitor_cmd,
- "terminal no monitor",
- "Set terminal line parametersn"
- NO_STR
- "Copy debug output to the current terminal linen")
- {
- vty->monitor = 0;
- return CMD_SUCCESS;
- }
- DEFUN (show_history,
- show_history_cmd,
- "show history",
- SHOW_STR
- "Display the session command historyn")
- {
- int index;
- for (index = vty->hindex + 1; index != vty->hindex;)
- {
- if (index == VTY_MAXHIST)
- {
- index = 0;
- continue;
- }
- if (vty->hist[index] != NULL)
- vty_out (vty, " %s%s", vty->hist[index], VTY_NEWLINE);
- index++;
- }
- return CMD_SUCCESS;
- }
- /* Display current configuration. */
- int
- vty_config_write (struct vty *vty)
- {
- vty_out (vty, "line vty%s", VTY_NEWLINE);
- if (vty_accesslist_name)
- vty_out (vty, " access-class %s%s",
- vty_accesslist_name, VTY_NEWLINE);
- if (vty_ipv6_accesslist_name)
- vty_out (vty, " ipv6 access-class %s%s",
- vty_ipv6_accesslist_name, VTY_NEWLINE);
- /* exec-timeout */
- if (vty_timeout_val != VTY_TIMEOUT_DEFAULT)
- vty_out (vty, " exec-timeout %ld %ld%s",
- vty_timeout_val / 60,
- vty_timeout_val % 60, VTY_NEWLINE);
- /* login */
- if (no_password_check)
- vty_out (vty, " no login%s", VTY_NEWLINE);
- vty_out (vty, "!%s", VTY_NEWLINE);
- return CMD_SUCCESS;
- }
- struct cmd_node vty_node =
- {
- VTY_NODE,
- "%s(config-line)# ",
- };
- /* Reset all VTY status. */
- void
- vty_reset ()
- {
- int i;
- struct vty *vty;
- struct thread *vty_serv_thread;
- for (i = 0; i < vector_max (vtyvec); i++)
- if ((vty = vector_slot (vtyvec, i)) != NULL)
- {
- buffer_reset (vty->obuf);
- vty->status = VTY_CLOSE;
- vty_close (vty);
- }
- for (i = 0; i < vector_max (Vvty_serv_thread); i++)
- if ((vty_serv_thread = vector_slot (Vvty_serv_thread, i)) != NULL)
- {
- thread_cancel (vty_serv_thread);
- vector_slot (Vvty_serv_thread, i) = NULL;
- close (i);
- }
- vty_timeout_val = VTY_TIMEOUT_DEFAULT;
- if (vty_accesslist_name)
- {
- XFREE(MTYPE_VTY, vty_accesslist_name);
- vty_accesslist_name = NULL;
- }
- if (vty_ipv6_accesslist_name)
- {
- XFREE(MTYPE_VTY, vty_ipv6_accesslist_name);
- vty_ipv6_accesslist_name = NULL;
- }
- }
- /* for ospf6d easy temprary reload function */
- /* vty_reset + close accept socket */
- void
- vty_finish ()
- {
- int i;
- struct vty *vty;
- struct thread *vty_serv_thread;
- for (i = 0; i < vector_max (vtyvec); i++)
- if ((vty = vector_slot (vtyvec, i)) != NULL)
- {
- buffer_reset (vty->obuf);
- vty->status = VTY_CLOSE;
- vty_close (vty);
- }
- for (i = 0; i < vector_max (Vvty_serv_thread); i++)
- if ((vty_serv_thread = vector_slot (Vvty_serv_thread, i)) != NULL)
- {
- thread_cancel (vty_serv_thread);
- vector_slot (Vvty_serv_thread, i) = NULL;
- close (i);
- }
- vty_timeout_val = VTY_TIMEOUT_DEFAULT;
- if (vty_accesslist_name)
- {
- XFREE(MTYPE_VTY, vty_accesslist_name);
- vty_accesslist_name = NULL;
- }
- if (vty_ipv6_accesslist_name)
- {
- XFREE(MTYPE_VTY, vty_ipv6_accesslist_name);
- vty_ipv6_accesslist_name = NULL;
- }
- }
- void
- vty_save_cwd ()
- {
- char *cwd;
- cwd = getcwd (NULL, MAXPATHLEN);
- vty_cwd = XMALLOC (MTYPE_TMP, strlen (cwd) + 1);
- strcpy (vty_cwd, cwd);
- }
- char *
- vty_get_cwd ()
- {
- return vty_cwd;
- }
- int
- vty_shell (struct vty *vty)
- {
- return vty->type == VTY_SHELL ? 1 : 0;
- }
- int
- vty_shell_serv (struct vty *vty)
- {
- return vty->type == VTY_SHELL_SERV ? 1 : 0;
- }
- void
- vty_init_vtysh ()
- {
- vtyvec = vector_init (VECTOR_MIN_SIZE);
- }
- /* Install vty's own commands like `who' command. */
- void
- vty_init ()
- {
- /* For further configuration read, preserve current directory. */
- vty_save_cwd ();
- vtyvec = vector_init (VECTOR_MIN_SIZE);
- /* Initilize server thread vector. */
- Vvty_serv_thread = vector_init (VECTOR_MIN_SIZE);
- /* Install bgp top node. */
- install_node (&vty_node, vty_config_write);
- install_element (VIEW_NODE, &config_who_cmd);
- install_element (VIEW_NODE, &show_history_cmd);
- install_element (ENABLE_NODE, &config_who_cmd);
- install_element (CONFIG_NODE, &line_vty_cmd);
- install_element (CONFIG_NODE, &service_advanced_vty_cmd);
- install_element (CONFIG_NODE, &no_service_advanced_vty_cmd);
- install_element (CONFIG_NODE, &show_history_cmd);
- install_element (ENABLE_NODE, &terminal_monitor_cmd);
- install_element (ENABLE_NODE, &terminal_no_monitor_cmd);
- install_element (ENABLE_NODE, &show_history_cmd);
- install_default (VTY_NODE);
- install_element (VTY_NODE, &exec_timeout_min_cmd);
- install_element (VTY_NODE, &exec_timeout_sec_cmd);
- install_element (VTY_NODE, &no_exec_timeout_cmd);
- install_element (VTY_NODE, &vty_access_class_cmd);
- install_element (VTY_NODE, &no_vty_access_class_cmd);
- install_element (VTY_NODE, &vty_login_cmd);
- install_element (VTY_NODE, &no_vty_login_cmd);
- #ifdef HAVE_IPV6
- install_element (VTY_NODE, &vty_ipv6_access_class_cmd);
- install_element (VTY_NODE, &no_vty_ipv6_access_class_cmd);
- #endif /* HAVE_IPV6 */
- }