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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_dynhn.c | |
3 | * Dynamic hostname cache | |
4 | * Copyright (C) 2001,2002 Sampo Saaristo | |
d62a17ae | 5 | * Tampere University of Technology |
eb5d44eb | 6 | * Institute of Communications Engineering |
7 | * | |
d62a17ae | 8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms of the GNU General Public Licenseas published by the Free | |
10 | * Software Foundation; either version 2 of the License, or (at your option) | |
eb5d44eb | 11 | * any later version. |
12 | * | |
d62a17ae | 13 | * This program is distributed in the hope that it will be useful,but WITHOUT |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
eb5d44eb | 16 | * more details. |
17 | * | |
896014f4 DL |
18 | * You should have received a copy of the GNU General Public License along |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
eb5d44eb | 21 | */ |
22 | ||
eb5d44eb | 23 | #include <zebra.h> |
eb5d44eb | 24 | |
25 | #include "vty.h" | |
26 | #include "linklist.h" | |
27 | #include "memory.h" | |
28 | #include "log.h" | |
29 | #include "stream.h" | |
30 | #include "command.h" | |
31 | #include "if.h" | |
d3d7474b | 32 | #include "thread.h" |
eb5d44eb | 33 | |
eb5d44eb | 34 | #include "isisd/isis_constants.h" |
35 | #include "isisd/isis_common.h" | |
36 | #include "isisd/isis_flags.h" | |
37 | #include "isisd/isis_circuit.h" | |
38 | #include "isisd/isisd.h" | |
39 | #include "isisd/isis_dynhn.h" | |
40 | #include "isisd/isis_misc.h" | |
41 | #include "isisd/isis_constants.h" | |
42 | ||
eb5d44eb | 43 | extern struct host host; |
44 | ||
45 | struct list *dyn_cache = NULL; | |
d62a17ae | 46 | static int dyn_cache_cleanup(struct thread *); |
eb5d44eb | 47 | |
d62a17ae | 48 | void dyn_cache_init(void) |
eb5d44eb | 49 | { |
d62a17ae | 50 | if (dyn_cache == NULL) |
51 | dyn_cache = list_new(); | |
52 | thread_add_timer(master, dyn_cache_cleanup, NULL, 120, | |
53 | &isis->t_dync_clean); | |
54 | return; | |
eb5d44eb | 55 | } |
56 | ||
d62a17ae | 57 | static int dyn_cache_cleanup(struct thread *thread) |
d3d7474b | 58 | { |
d62a17ae | 59 | struct listnode *node, *nnode; |
60 | struct isis_dynhn *dyn; | |
61 | time_t now = time(NULL); | |
d3d7474b | 62 | |
d62a17ae | 63 | isis->t_dync_clean = NULL; |
d3d7474b | 64 | |
d62a17ae | 65 | for (ALL_LIST_ELEMENTS(dyn_cache, node, nnode, dyn)) { |
66 | if ((now - dyn->refresh) < MAX_LSP_LIFETIME) | |
67 | continue; | |
d3d7474b | 68 | |
d62a17ae | 69 | list_delete_node(dyn_cache, node); |
70 | XFREE(MTYPE_ISIS_DYNHN, dyn); | |
71 | } | |
d3d7474b | 72 | |
d62a17ae | 73 | thread_add_timer(master, dyn_cache_cleanup, NULL, 120, |
74 | &isis->t_dync_clean); | |
75 | return ISIS_OK; | |
d3d7474b | 76 | } |
77 | ||
d7c0a89a | 78 | struct isis_dynhn *dynhn_find_by_id(const uint8_t *id) |
eb5d44eb | 79 | { |
d62a17ae | 80 | struct listnode *node = NULL; |
81 | struct isis_dynhn *dyn = NULL; | |
eb5d44eb | 82 | |
d62a17ae | 83 | for (ALL_LIST_ELEMENTS_RO(dyn_cache, node, dyn)) |
84 | if (memcmp(dyn->id, id, ISIS_SYS_ID_LEN) == 0) | |
85 | return dyn; | |
f390d2c7 | 86 | |
d62a17ae | 87 | return NULL; |
eb5d44eb | 88 | } |
89 | ||
d62a17ae | 90 | struct isis_dynhn *dynhn_find_by_name(const char *hostname) |
3f045a08 | 91 | { |
d62a17ae | 92 | struct listnode *node = NULL; |
93 | struct isis_dynhn *dyn = NULL; | |
3f045a08 | 94 | |
d62a17ae | 95 | for (ALL_LIST_ELEMENTS_RO(dyn_cache, node, dyn)) |
af8ac8f9 | 96 | if (strncmp(dyn->hostname, hostname, 255) == 0) |
d62a17ae | 97 | return dyn; |
3f045a08 | 98 | |
d62a17ae | 99 | return NULL; |
3f045a08 JB |
100 | } |
101 | ||
d7c0a89a | 102 | void isis_dynhn_insert(const uint8_t *id, const char *hostname, int level) |
eb5d44eb | 103 | { |
d62a17ae | 104 | struct isis_dynhn *dyn; |
105 | ||
106 | dyn = dynhn_find_by_id(id); | |
d62a17ae | 107 | if (!dyn) { |
af8ac8f9 CF |
108 | dyn = XCALLOC(MTYPE_ISIS_DYNHN, sizeof(struct isis_dynhn)); |
109 | memcpy(dyn->id, id, ISIS_SYS_ID_LEN); | |
110 | dyn->level = level; | |
111 | listnode_add(dyn_cache, dyn); | |
d62a17ae | 112 | } |
113 | ||
af8ac8f9 | 114 | snprintf(dyn->hostname, sizeof(dyn->hostname), "%s", hostname); |
d62a17ae | 115 | dyn->refresh = time(NULL); |
eb5d44eb | 116 | } |
117 | ||
d7c0a89a | 118 | void isis_dynhn_remove(const uint8_t *id) |
3f045a08 | 119 | { |
d62a17ae | 120 | struct isis_dynhn *dyn; |
121 | ||
122 | dyn = dynhn_find_by_id(id); | |
123 | if (!dyn) | |
124 | return; | |
125 | listnode_delete(dyn_cache, dyn); | |
126 | XFREE(MTYPE_ISIS_DYNHN, dyn); | |
3f045a08 JB |
127 | } |
128 | ||
eb5d44eb | 129 | /* |
130 | * Level System ID Dynamic Hostname (notag) | |
131 | * 2 0000.0000.0001 foo-gw | |
132 | * 2 0000.0000.0002 bar-gw | |
133 | * * 0000.0000.0004 this-gw | |
134 | */ | |
d62a17ae | 135 | void dynhn_print_all(struct vty *vty) |
eb5d44eb | 136 | { |
d62a17ae | 137 | struct listnode *node; |
138 | struct isis_dynhn *dyn; | |
139 | ||
140 | vty_out(vty, "Level System ID Dynamic Hostname\n"); | |
141 | for (ALL_LIST_ELEMENTS_RO(dyn_cache, node, dyn)) { | |
142 | vty_out(vty, "%-7d", dyn->level); | |
143 | vty_out(vty, "%-15s%-15s\n", sysid_print(dyn->id), | |
af8ac8f9 | 144 | dyn->hostname); |
d62a17ae | 145 | } |
146 | ||
147 | vty_out(vty, " * %s %s\n", sysid_print(isis->sysid), | |
6b3ee3a0 | 148 | cmd_hostname_get()); |
d62a17ae | 149 | return; |
eb5d44eb | 150 | } |