1: /*
2: * This file is free software: you may copy, redistribute and/or modify it
3: * under the terms of the GNU General Public License as published by the
4: * Free Software Foundation, either version 2 of the License, or (at your
5: * option) any later version.
6: *
7: * This file is distributed in the hope that it will be useful, but
8: * WITHOUT ANY WARRANTY; without even the implied warranty of
9: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10: * General Public License for more details.
11: *
12: * You should have received a copy of the GNU General Public License
13: * along with this program. If not, see <http://www.gnu.org/licenses/>.
14: *
15: * This file incorporates work covered by the following copyright and
16: * permission notice:
17: *
18: Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
19:
20: Permission is hereby granted, free of charge, to any person obtaining a copy
21: of this software and associated documentation files (the "Software"), to deal
22: in the Software without restriction, including without limitation the rights
23: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
24: copies of the Software, and to permit persons to whom the Software is
25: furnished to do so, subject to the following conditions:
26:
27: The above copyright notice and this permission notice shall be included in
28: all copies or substantial portions of the Software.
29:
30: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
31: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
32: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
33: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
34: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
35: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
36: THE SOFTWARE.
37: */
38:
39: /* quagga's includes */
40: #include <zebra.h>
41: #include "command.h"
42: #include "zclient.h"
43: #include "stream.h"
44:
45: /* babel's includes*/
46: #include "babel_zebra.h"
47: #include "babel_interface.h"
48: #include "xroute.h"
49: #include "util.h"
50:
51: void babelz_zebra_init(void);
52:
53:
54: /* we must use a pointer because of zclient.c's functions (new, free). */
55: struct zclient *zclient;
56: static int zebra_config_write (struct vty *vty);
57:
58: /* Debug types */
59: static struct {
60: int type;
61: int str_min_len;
62: const char *str;
63: } debug_type[] = {
64: {BABEL_DEBUG_COMMON, 1, "common"},
65: {BABEL_DEBUG_KERNEL, 1, "kernel"},
66: {BABEL_DEBUG_FILTER, 1, "filter"},
67: {BABEL_DEBUG_TIMEOUT, 1, "timeout"},
68: {BABEL_DEBUG_IF, 1, "interface"},
69: {BABEL_DEBUG_ROUTE, 1, "route"},
70: {BABEL_DEBUG_ALL, 1, "all"},
71: {0, 0, NULL}
72: };
73:
74: /* Zebra node structure. */
75: struct cmd_node zebra_node =
76: {
77: ZEBRA_NODE,
78: "%s(config-router)# ",
79: 1 /* vtysh? yes */
80: };
81:
82:
83: /* Zebra route add and delete treatment (ipv6). */
84: static int
85: babel_zebra_read_ipv6 (int command, struct zclient *zclient,
86: zebra_size_t length)
87: {
88: struct stream *s;
89: struct zapi_ipv6 api;
90: unsigned long ifindex = -1;
91: struct in6_addr nexthop;
92: struct prefix_ipv6 prefix;
93:
94: s = zclient->ibuf;
95: ifindex = 0;
96: memset (&nexthop, 0, sizeof (struct in6_addr));
97: memset (&api, 0, sizeof(struct zapi_ipv6));
98: memset (&prefix, 0, sizeof (struct prefix_ipv6));
99:
100: /* Type, flags, message. */
101: api.type = stream_getc (s);
102: api.flags = stream_getc (s);
103: api.message = stream_getc (s);
104:
105: /* IPv6 prefix. */
106: prefix.family = AF_INET6;
107: prefix.prefixlen = stream_getc (s);
108: stream_get (&prefix.prefix, s, PSIZE (prefix.prefixlen));
109:
110: /* Nexthop, ifindex, distance, metric. */
111: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) {
112: api.nexthop_num = stream_getc (s);
113: stream_get (&nexthop, s, sizeof(nexthop));
114: }
115: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) {
116: api.ifindex_num = stream_getc (s);
117: ifindex = stream_getl (s);
118: }
119: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
120: api.distance = stream_getc (s);
121: else
122: api.distance = 0;
123: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
124: api.metric = stream_getl (s);
125: else
126: api.metric = 0;
127:
128: if (command == ZEBRA_IPV6_ROUTE_ADD)
129: babel_ipv6_route_add(&api, &prefix, ifindex, &nexthop);
130: else
131: babel_ipv6_route_delete(&api, &prefix, ifindex);
132:
133: return 0;
134: }
135:
136: static int
137: babel_zebra_read_ipv4 (int command, struct zclient *zclient,
138: zebra_size_t length)
139: {
140: struct stream *s;
141: struct zapi_ipv4 api;
142: unsigned long ifindex = -1;
143: struct in_addr nexthop;
144: struct prefix_ipv4 prefix;
145:
146: s = zclient->ibuf;
147: ifindex = 0;
148: memset (&nexthop, 0, sizeof (struct in_addr));
149: memset (&api, 0, sizeof(struct zapi_ipv4));
150: memset (&prefix, 0, sizeof (struct prefix_ipv4));
151:
152: /* Type, flags, message. */
153: api.type = stream_getc (s);
154: api.flags = stream_getc (s);
155: api.message = stream_getc (s);
156:
157: /* IPv6 prefix. */
158: prefix.family = AF_INET;
159: prefix.prefixlen = stream_getc (s);
160: stream_get (&prefix.prefix, s, PSIZE (prefix.prefixlen));
161:
162: /* Nexthop, ifindex, distance, metric. */
163: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP)) {
164: api.nexthop_num = stream_getc (s);
165: stream_get (&nexthop, s, sizeof(nexthop));
166: }
167: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX)) {
168: api.ifindex_num = stream_getc (s);
169: ifindex = stream_getl (s);
170: }
171: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
172: api.distance = stream_getc (s);
173: else
174: api.distance = 0;
175: if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
176: api.metric = stream_getl (s);
177: else
178: api.metric = 0;
179:
180: if (command == ZEBRA_IPV6_ROUTE_ADD) {
181: babel_ipv4_route_add(&api, &prefix, ifindex, &nexthop);
182: } else {
183: babel_ipv4_route_delete(&api, &prefix, ifindex);
184: }
185:
186: return 0;
187: }
188:
189: /* [Babel Command] */
190: DEFUN (babel_redistribute_type,
191: babel_redistribute_type_cmd,
192: "redistribute " QUAGGA_REDIST_STR_BABELD,
193: "Redistribute\n"
194: QUAGGA_REDIST_HELP_STR_BABELD)
195: {
196: int type;
197:
198: type = proto_redistnum(AFI_IP6, argv[0]);
199:
200: if (type < 0)
201: type = proto_redistnum(AFI_IP, argv[0]);
202:
203: if (type < 0) {
204: vty_out(vty, "Invalid type %s%s", argv[0], VTY_NEWLINE);
205: return CMD_WARNING;
206: }
207:
208: zclient_redistribute (ZEBRA_REDISTRIBUTE_ADD, zclient, type);
209: return CMD_SUCCESS;
210: }
211:
212: /* [Babel Command] */
213: DEFUN (no_babel_redistribute_type,
214: no_babel_redistribute_type_cmd,
215: "no redistribute " QUAGGA_REDIST_STR_BABELD,
216: NO_STR
217: "Redistribute\n"
218: QUAGGA_REDIST_HELP_STR_BABELD)
219: {
220: int type;
221:
222: type = proto_redistnum(AFI_IP6, argv[0]);
223:
224: if (type < 0)
225: type = proto_redistnum(AFI_IP, argv[0]);
226:
227: if (type < 0) {
228: vty_out(vty, "Invalid type %s%s", argv[0], VTY_NEWLINE);
229: return CMD_WARNING;
230: }
231:
232: zclient_redistribute (ZEBRA_REDISTRIBUTE_DELETE, zclient, type);
233: /* perhaps should we remove xroutes having the same type... */
234: return CMD_SUCCESS;
235: }
236:
237: #ifndef NO_DEBUG
238: /* [Babel Command] */
239: DEFUN (debug_babel,
240: debug_babel_cmd,
241: "debug babel (common|kernel|filter|timeout|interface|route|all)",
242: "Enable debug messages for specific or all part.\n"
243: "Babel information\n"
244: "Common messages (default)\n"
245: "Kernel messages\n"
246: "Filter messages\n"
247: "Timeout messages\n"
248: "Interface messages\n"
249: "Route messages\n"
250: "All messages\n")
251: {
252: int i;
253:
254: for(i = 0; debug_type[i].str != NULL; i++) {
255: if (strncmp (debug_type[i].str, argv[0],
256: debug_type[i].str_min_len) == 0) {
257: debug |= debug_type[i].type;
258: return CMD_SUCCESS;
259: }
260: }
261:
262: vty_out(vty, "Invalid type %s%s", argv[0], VTY_NEWLINE);
263:
264: return CMD_WARNING;
265: }
266:
267: /* [Babel Command] */
268: DEFUN (no_debug_babel,
269: no_debug_babel_cmd,
270: "no debug babel (common|kernel|filter|timeout|interface|route|all)",
271: NO_STR
272: "Disable debug messages for specific or all part.\n"
273: "Babel information\n"
274: "Common messages (default)\n"
275: "Kernel messages\n"
276: "Filter messages\n"
277: "Timeout messages\n"
278: "Interface messages\n"
279: "Route messages\n"
280: "All messages\n")
281: {
282: int i;
283:
284: for (i = 0; debug_type[i].str; i++) {
285: if (strncmp(debug_type[i].str, argv[0],
286: debug_type[i].str_min_len) == 0) {
287: debug &= ~debug_type[i].type;
288: return CMD_SUCCESS;
289: }
290: }
291:
292: vty_out(vty, "Invalid type %s%s", argv[0], VTY_NEWLINE);
293:
294: return CMD_WARNING;
295: }
296: #endif /* NO_DEBUG */
297:
298: /* Output "debug" statement lines, if necessary. */
299: int
300: debug_babel_config_write (struct vty * vty)
301: {
302: #ifdef NO_DEBUG
303: return 0;
304: #else
305: int i, lines = 0;
306:
307: if (debug == BABEL_DEBUG_ALL)
308: {
309: vty_out (vty, "debug babel all%s", VTY_NEWLINE);
310: lines++;
311: }
312: else
313: for (i = 0; debug_type[i].str != NULL; i++)
314: if
315: (
316: debug_type[i].type != BABEL_DEBUG_ALL
317: && CHECK_FLAG (debug, debug_type[i].type)
318: )
319: {
320: vty_out (vty, "debug babel %s%s", debug_type[i].str, VTY_NEWLINE);
321: lines++;
322: }
323: if (lines)
324: {
325: vty_out (vty, "!%s", VTY_NEWLINE);
326: lines++;
327: }
328: return lines;
329: #endif /* NO_DEBUG */
330: }
331:
332: void babelz_zebra_init(void)
333: {
334: zclient = zclient_new();
335: zclient_init(zclient, ZEBRA_ROUTE_BABEL);
336:
337: zclient->interface_add = babel_interface_add;
338: zclient->interface_delete = babel_interface_delete;
339: zclient->interface_up = babel_interface_up;
340: zclient->interface_down = babel_interface_down;
341: zclient->interface_address_add = babel_interface_address_add;
342: zclient->interface_address_delete = babel_interface_address_delete;
343: zclient->ipv4_route_add = babel_zebra_read_ipv4;
344: zclient->ipv4_route_delete = babel_zebra_read_ipv4;
345: zclient->ipv6_route_add = babel_zebra_read_ipv6;
346: zclient->ipv6_route_delete = babel_zebra_read_ipv6;
347:
348: install_node (&zebra_node, zebra_config_write);
349: install_element(BABEL_NODE, &babel_redistribute_type_cmd);
350: install_element(BABEL_NODE, &no_babel_redistribute_type_cmd);
351: install_element(ENABLE_NODE, &debug_babel_cmd);
352: install_element(ENABLE_NODE, &no_debug_babel_cmd);
353: install_element(CONFIG_NODE, &debug_babel_cmd);
354: install_element(CONFIG_NODE, &no_debug_babel_cmd);
355: }
356:
357: static int
358: zebra_config_write (struct vty *vty)
359: {
360: if (! zclient->enable)
361: {
362: vty_out (vty, "no router zebra%s", VTY_NEWLINE);
363: return 1;
364: }
365: else if (! zclient->redist[ZEBRA_ROUTE_BABEL])
366: {
367: vty_out (vty, "router zebra%s", VTY_NEWLINE);
368: vty_out (vty, " no redistribute babel%s", VTY_NEWLINE);
369: return 1;
370: }
371: return 0;
372: }
373:
374: void
375: babel_zebra_close_connexion(void)
376: {
377: zclient_stop(zclient);
378: }
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