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https://git.proxmox.com/git/mirror_frr
synced 2025-08-06 10:54:47 +00:00
[vty] Add support for a 'restricted mode' with anonymous vty connections
* lib/command.h: Add a RESTRICTED_NODE, intended for use with
anonymous, 'no login' vtys, to provide a subset of 'view' mode
commands.
* lib/command.c: Add RESTRICTED_NODE bits, nothing special, just
following VIEW_NODE.
* lib/vty.c: (vty_auth) enable authentication should fall back to
restricted/view node as appropriate.
(vty_create) init vty's to restricted/view node as appropriate,
for the 'no login' case.
(vty_{no_,}restricted_mode_cmd) config commands to enable
'anonymous restricted' in vty configuration.
(vty_config_write) 'anonymous restricted' config.
(vty_init) Install some commands to restricted mode, and the
'anonymous restricted' config commands into VTY_NODE.
* bgpd/*.c: Install some of the safe(r) BGP commands into
'restricted mode', i.e. lookup commands of non-sensitive data.
Useful with looking-glass route-servers.
This commit is contained in:
Paul Jakma
Paul Jakma
parent
b38309a4ee
commit
62687ff1cd
@ -1319,5 +1319,6 @@ bgp_scan_init ()
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install_element (BGP_NODE, &no_bgp_scan_time_cmd);
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install_element (BGP_NODE, &no_bgp_scan_time_val_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_scan_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_scan_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_scan_cmd);
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}
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@ -11787,6 +11787,37 @@ bgp_route_init ()
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install_element (VIEW_NODE, &show_ip_bgp_view_rsclient_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_view_rsclient_route_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_view_rsclient_prefix_cmd);
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/* Restricted node: VIEW_NODE - (set of dangerous commands) */
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install_element (RESTRICTED_NODE, &show_ip_bgp_route_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_route_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_rd_route_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_all_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_rd_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_view_route_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_view_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community2_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community3_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community4_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community2_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community3_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community4_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community2_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community3_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_community4_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community2_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community3_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_community4_exact_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_rsclient_route_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_rsclient_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_view_rsclient_route_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_view_rsclient_prefix_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_ipv4_cmd);
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@ -11971,6 +12002,40 @@ bgp_route_init ()
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install_element (VIEW_NODE, &show_bgp_view_rsclient_cmd);
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install_element (VIEW_NODE, &show_bgp_view_rsclient_route_cmd);
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install_element (VIEW_NODE, &show_bgp_view_rsclient_prefix_cmd);
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/* Restricted:
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* VIEW_NODE - (set of dangerous commands) - (commands dependent on prev)
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*/
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install_element (RESTRICTED_NODE, &show_bgp_route_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_route_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community2_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community2_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community3_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community3_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community4_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community4_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community2_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community2_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community3_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community3_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_community4_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_community4_exact_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_rsclient_route_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_rsclient_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_route_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_ipv6_route_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_ipv6_prefix_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_neighbor_received_prefix_filter_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_ipv6_neighbor_received_prefix_filter_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_rsclient_route_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_view_rsclient_prefix_cmd);
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install_element (ENABLE_NODE, &show_bgp_cmd);
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install_element (ENABLE_NODE, &show_bgp_ipv6_cmd);
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@ -9747,6 +9747,18 @@ bgp_vty_init (void)
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install_element (VIEW_NODE, &show_bgp_instance_summary_cmd);
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install_element (VIEW_NODE, &show_bgp_ipv6_summary_cmd);
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install_element (VIEW_NODE, &show_bgp_instance_ipv6_summary_cmd);
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#endif /* HAVE_IPV6 */
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install_element (RESTRICTED_NODE, &show_ip_bgp_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_instance_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_instance_ipv4_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_all_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_rd_summary_cmd);
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#ifdef HAVE_IPV6
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install_element (RESTRICTED_NODE, &show_bgp_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_instance_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_instance_ipv6_summary_cmd);
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#endif /* HAVE_IPV6 */
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install_element (ENABLE_NODE, &show_ip_bgp_summary_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_instance_summary_cmd);
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@ -9772,6 +9784,11 @@ bgp_vty_init (void)
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install_element (VIEW_NODE, &show_ip_bgp_vpnv4_rd_neighbors_peer_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_instance_neighbors_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_instance_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_all_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_vpnv4_rd_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_instance_neighbors_peer_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_neighbors_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_ipv4_neighbors_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_neighbors_peer_cmd);
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@ -9792,6 +9809,10 @@ bgp_vty_init (void)
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install_element (VIEW_NODE, &show_bgp_instance_ipv6_neighbors_cmd);
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install_element (VIEW_NODE, &show_bgp_instance_neighbors_peer_cmd);
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install_element (VIEW_NODE, &show_bgp_instance_ipv6_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_instance_neighbors_peer_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_instance_ipv6_neighbors_peer_cmd);
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install_element (ENABLE_NODE, &show_bgp_neighbors_cmd);
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install_element (ENABLE_NODE, &show_bgp_ipv6_neighbors_cmd);
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install_element (ENABLE_NODE, &show_bgp_neighbors_peer_cmd);
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@ -9813,6 +9834,10 @@ bgp_vty_init (void)
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install_element (VIEW_NODE, &show_ip_bgp_instance_rsclient_summary_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_ipv4_rsclient_summary_cmd);
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install_element (VIEW_NODE, &show_ip_bgp_instance_ipv4_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_instance_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_ipv4_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_ip_bgp_instance_ipv4_rsclient_summary_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_rsclient_summary_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_instance_rsclient_summary_cmd);
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install_element (ENABLE_NODE, &show_ip_bgp_ipv4_rsclient_summary_cmd);
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@ -9823,6 +9848,10 @@ bgp_vty_init (void)
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install_element (VIEW_NODE, &show_bgp_ipv6_rsclient_summary_cmd);
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install_element (VIEW_NODE, &show_bgp_instance_rsclient_summary_cmd);
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install_element (VIEW_NODE, &show_bgp_instance_ipv6_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_ipv6_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_instance_rsclient_summary_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_instance_ipv6_rsclient_summary_cmd);
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install_element (ENABLE_NODE, &show_bgp_rsclient_summary_cmd);
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install_element (ENABLE_NODE, &show_bgp_ipv6_rsclient_summary_cmd);
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install_element (ENABLE_NODE, &show_bgp_instance_rsclient_summary_cmd);
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@ -9869,6 +9898,7 @@ bgp_vty_init (void)
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/* "show bgp memory" commands. */
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install_element (VIEW_NODE, &show_bgp_memory_cmd);
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install_element (RESTRICTED_NODE, &show_bgp_memory_cmd);
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install_element (ENABLE_NODE, &show_bgp_memory_cmd);
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/* Community-list. */
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@ -53,6 +53,12 @@ struct cmd_node view_node =
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"%s> ",
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};
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struct cmd_node restricted_node =
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{
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RESTRICTED_NODE,
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"%s$ ",
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};
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struct cmd_node auth_enable_node =
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{
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AUTH_ENABLE_NODE,
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@ -1563,6 +1569,7 @@ cmd_try_do_shortcut (enum node_type node, char* first_word) {
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node != VIEW_NODE &&
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node != AUTH_ENABLE_NODE &&
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node != ENABLE_NODE &&
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node != RESTRICTED_NODE &&
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0 == strcmp( "do", first_word ) )
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return 1;
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return 0;
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@ -2376,6 +2383,7 @@ DEFUN (config_exit,
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{
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case VIEW_NODE:
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case ENABLE_NODE:
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case RESTRICTED_NODE:
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if (vty_shell (vty))
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exit (0);
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else
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@ -2431,6 +2439,7 @@ DEFUN (config_end,
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{
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case VIEW_NODE:
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case ENABLE_NODE:
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case RESTRICTED_NODE:
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/* Nothing to do. */
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break;
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case CONFIG_NODE:
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@ -3538,6 +3547,7 @@ cmd_init (int terminal)
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install_node (&enable_node, NULL);
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install_node (&auth_node, NULL);
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install_node (&auth_enable_node, NULL);
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install_node (&restricted_node, NULL);
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install_node (&config_node, config_write_host);
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/* Each node's basic commands. */
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@ -3553,6 +3563,15 @@ cmd_init (int terminal)
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install_element (VIEW_NODE, &config_terminal_no_length_cmd);
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install_element (VIEW_NODE, &show_logging_cmd);
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install_element (VIEW_NODE, &echo_cmd);
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install_element (RESTRICTED_NODE, &config_list_cmd);
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install_element (RESTRICTED_NODE, &config_exit_cmd);
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install_element (RESTRICTED_NODE, &config_quit_cmd);
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install_element (RESTRICTED_NODE, &config_help_cmd);
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install_element (RESTRICTED_NODE, &config_enable_cmd);
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install_element (RESTRICTED_NODE, &config_terminal_length_cmd);
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install_element (RESTRICTED_NODE, &config_terminal_no_length_cmd);
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install_element (RESTRICTED_NODE, &echo_cmd);
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}
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if (terminal)
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@ -3620,6 +3639,7 @@ cmd_init (int terminal)
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install_element (VIEW_NODE, &show_thread_cpu_cmd);
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install_element (ENABLE_NODE, &show_thread_cpu_cmd);
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install_element (RESTRICTED_NODE, &show_thread_cpu_cmd);
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install_element (VIEW_NODE, &show_work_queues_cmd);
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install_element (ENABLE_NODE, &show_work_queues_cmd);
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}
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@ -63,6 +63,7 @@ struct host
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enum node_type
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{
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AUTH_NODE, /* Authentication mode of vty interface. */
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RESTRICTED_NODE, /* Restricted view mode */
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VIEW_NODE, /* View node. Default mode of vty interface. */
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AUTH_ENABLE_NODE, /* Authentication mode for change enable. */
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ENABLE_NODE, /* Enable node. */
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@ -100,7 +101,7 @@ enum node_type
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DUMP_NODE, /* Packet dump node. */
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FORWARDING_NODE, /* IP forwarding node. */
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PROTOCOL_NODE, /* protocol filtering node */
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VTY_NODE /* Vty node. */
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VTY_NODE, /* Vty node. */
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};
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/* Node which has some commands and prompt string and configuration
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10
lib/memory.c
10
lib/memory.c
@ -444,6 +444,16 @@ DEFUN (show_memory_isis,
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void
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memory_init (void)
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{
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install_element (RESTRICTED_NODE, &show_memory_cmd);
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install_element (RESTRICTED_NODE, &show_memory_all_cmd);
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install_element (RESTRICTED_NODE, &show_memory_lib_cmd);
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install_element (RESTRICTED_NODE, &show_memory_rip_cmd);
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install_element (RESTRICTED_NODE, &show_memory_ripng_cmd);
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install_element (RESTRICTED_NODE, &show_memory_bgp_cmd);
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install_element (RESTRICTED_NODE, &show_memory_ospf_cmd);
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install_element (RESTRICTED_NODE, &show_memory_ospf6_cmd);
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install_element (RESTRICTED_NODE, &show_memory_isis_cmd);
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install_element (VIEW_NODE, &show_memory_cmd);
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install_element (VIEW_NODE, &show_memory_all_cmd);
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install_element (VIEW_NODE, &show_memory_lib_cmd);
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46
lib/vty.c
46
lib/vty.c
@ -82,6 +82,10 @@ static int vty_config;
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/* Login password check. */
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static int no_password_check = 0;
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/* Restrict unauthenticated logins? */
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static const u_char restricted_mode_default = 0;
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static u_char restricted_mode = 0;
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/* Integrated configuration file path */
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char integrate_default[] = SYSCONFDIR INTEGRATE_DEFAULT_CONFIG;
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@ -383,7 +387,7 @@ vty_auth (struct vty *vty, char *buf)
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/* AUTH_ENABLE_NODE */
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vty->fail = 0;
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vty_out (vty, "%% Bad enable passwords, too many failures!%s", VTY_NEWLINE);
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vty->node = VIEW_NODE;
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vty->node = restricted_mode ? RESTRICTED_NODE : VIEW_NODE;
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}
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}
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}
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@ -687,6 +691,7 @@ vty_end_config (struct vty *vty)
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{
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case VIEW_NODE:
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case ENABLE_NODE:
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case RESTRICTED_NODE:
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/* Nothing to do. */
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break;
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case CONFIG_NODE:
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@ -1094,6 +1099,7 @@ vty_stop_input (struct vty *vty)
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{
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case VIEW_NODE:
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case ENABLE_NODE:
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case RESTRICTED_NODE:
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/* Nothing to do. */
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break;
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case CONFIG_NODE:
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@ -1613,7 +1619,9 @@ vty_create (int vty_sock, union sockunion *su)
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vty->address = sockunion_su2str (su);
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if (no_password_check)
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{
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if (host.advanced)
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if (restricted_mode)
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vty->node = RESTRICTED_NODE;
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else if (host.advanced)
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||||
vty->node = ENABLE_NODE;
|
||||
else
|
||||
vty->node = VIEW_NODE;
|
||||
@ -2715,6 +2723,26 @@ DEFUN (no_vty_login,
|
||||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
/* initial mode. */
|
||||
DEFUN (vty_restricted_mode,
|
||||
vty_restricted_mode_cmd,
|
||||
"anonymous restricted",
|
||||
"Restrict view commands available in anonymous, unauthenticated vty\n")
|
||||
{
|
||||
restricted_mode = 1;
|
||||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
DEFUN (vty_no_restricted_mode,
|
||||
vty_no_restricted_mode_cmd,
|
||||
"no anonymous restricted",
|
||||
NO_STR
|
||||
"Enable password checking\n")
|
||||
{
|
||||
restricted_mode = 0;
|
||||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
DEFUN (service_advanced_vty,
|
||||
service_advanced_vty_cmd,
|
||||
"service advanced-vty",
|
||||
@ -2812,7 +2840,15 @@ vty_config_write (struct vty *vty)
|
||||
/* login */
|
||||
if (no_password_check)
|
||||
vty_out (vty, " no login%s", VTY_NEWLINE);
|
||||
|
||||
|
||||
if (restricted_mode != restricted_mode_default)
|
||||
{
|
||||
if (restricted_mode_default)
|
||||
vty_out (vty, " no anonymous restricted%s", VTY_NEWLINE);
|
||||
else
|
||||
vty_out (vty, " anonymous restricted%s", VTY_NEWLINE);
|
||||
}
|
||||
|
||||
vty_out (vty, "!%s", VTY_NEWLINE);
|
||||
|
||||
return CMD_SUCCESS;
|
||||
@ -2923,6 +2959,8 @@ vty_init (struct thread_master *master_thread)
|
||||
/* Install bgp top node. */
|
||||
install_node (&vty_node, vty_config_write);
|
||||
|
||||
install_element (RESTRICTED_NODE, &config_who_cmd);
|
||||
install_element (RESTRICTED_NODE, &show_history_cmd);
|
||||
install_element (VIEW_NODE, &config_who_cmd);
|
||||
install_element (VIEW_NODE, &show_history_cmd);
|
||||
install_element (ENABLE_NODE, &config_who_cmd);
|
||||
@ -2943,6 +2981,8 @@ vty_init (struct thread_master *master_thread)
|
||||
install_element (VTY_NODE, &no_vty_access_class_cmd);
|
||||
install_element (VTY_NODE, &vty_login_cmd);
|
||||
install_element (VTY_NODE, &no_vty_login_cmd);
|
||||
install_element (VTY_NODE, &vty_restricted_mode_cmd);
|
||||
install_element (VTY_NODE, &vty_no_restricted_mode_cmd);
|
||||
#ifdef HAVE_IPV6
|
||||
install_element (VTY_NODE, &vty_ipv6_access_class_cmd);
|
||||
install_element (VTY_NODE, &no_vty_ipv6_access_class_cmd);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user