Don't fail with an error if an attribute that is to be deleted does not exist
[strongswan.git] / src / libhydra / plugins / attr_sql / pool_attributes.c
1 /*
2 * Copyright (C) 2009-2010 Andreas Steffen
3 * Hochschule fuer Technik Rapperswil
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
12 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * for more details.
14 */
15
16 #define _GNU_SOURCE
17 #include <string.h>
18
19 #include <library.h>
20 #include <utils/host.h>
21
22 #include "pool_attributes.h"
23 #include "pool_usage.h"
24
25 /**
26 * global database handle
27 */
28 extern database_t *db;
29
30 #define UNITY_NETWORK_LEN 14
31
32 ENUM(value_type_names, VALUE_HEX, VALUE_SUBNET,
33 "hex",
34 "string",
35 "addr",
36 "subnet"
37 );
38
39 typedef struct attr_info_t attr_info_t;
40
41 struct attr_info_t {
42 char* keyword;
43 value_type_t value_type;
44 configuration_attribute_type_t type;
45 configuration_attribute_type_t type_ip6;
46 };
47
48 static const attr_info_t attr_info[] = {
49 { "internal_ip4_netmask", VALUE_ADDR, INTERNAL_IP4_NETMASK, 0 },
50 { "internal_ip6_netmask", VALUE_ADDR, INTERNAL_IP6_NETMASK, 0 },
51 { "netmask", VALUE_ADDR, INTERNAL_IP4_NETMASK,
52 INTERNAL_IP6_NETMASK },
53 { "internal_ip4_dns", VALUE_ADDR, INTERNAL_IP4_DNS, 0 },
54 { "internal_ip6_dns", VALUE_ADDR, INTERNAL_IP6_DNS, 0 },
55 { "dns", VALUE_ADDR, INTERNAL_IP4_DNS,
56 INTERNAL_IP6_DNS },
57 { "internal_ip4_nbns", VALUE_ADDR, INTERNAL_IP4_NBNS, 0 },
58 { "internal_ip6_nbns", VALUE_ADDR, INTERNAL_IP6_NBNS, 0 },
59 { "nbns", VALUE_ADDR, INTERNAL_IP4_NBNS,
60 INTERNAL_IP6_NBNS },
61 { "wins", VALUE_ADDR, INTERNAL_IP4_NBNS,
62 INTERNAL_IP6_NBNS },
63 { "internal_ip4_dhcp", VALUE_ADDR, INTERNAL_IP4_DHCP, 0 },
64 { "internal_ip6_dhcp", VALUE_ADDR, INTERNAL_IP6_DHCP, 0 },
65 { "dhcp", VALUE_ADDR, INTERNAL_IP4_DHCP,
66 INTERNAL_IP6_DHCP },
67 { "internal_ip4_server", VALUE_ADDR, INTERNAL_IP4_SERVER, 0 },
68 { "internal_ip6_server", VALUE_ADDR, INTERNAL_IP6_SERVER, 0 },
69 { "server", VALUE_ADDR, INTERNAL_IP4_SERVER,
70 INTERNAL_IP6_SERVER },
71 { "application_version", VALUE_STRING, APPLICATION_VERSION, 0 },
72 { "version", VALUE_STRING, APPLICATION_VERSION, 0 },
73 { "unity_banner", VALUE_STRING, UNITY_BANNER, 0 },
74 { "banner", VALUE_STRING, UNITY_BANNER, 0 },
75 { "unity_def_domain", VALUE_STRING, UNITY_DEF_DOMAIN, 0 },
76 { "unity_splitdns_name", VALUE_STRING, UNITY_SPLITDNS_NAME, 0 },
77 { "unity_split_include", VALUE_SUBNET, UNITY_SPLIT_INCLUDE, 0 },
78 { "unity_local_lan", VALUE_SUBNET, UNITY_LOCAL_LAN, 0 },
79 };
80
81 /**
82 * Determine the type of the attribute and its value
83 */
84 static bool parse_attributes(char *name, char *value, value_type_t *value_type,
85 configuration_attribute_type_t *type,
86 configuration_attribute_type_t *type_ip6,
87 chunk_t *blob)
88 {
89 host_t *addr = NULL, *mask = NULL;
90 chunk_t addr_chunk, mask_chunk, blob_next;
91 char *text = "", *pos_addr, *pos_mask, *pos_next, *endptr;
92 int i;
93
94 switch (*value_type)
95 {
96 case VALUE_STRING:
97 *blob = chunk_create(value, strlen(value));
98 *blob = chunk_clone(*blob);
99 break;
100 case VALUE_HEX:
101 *blob = chunk_from_hex(chunk_create(value, strlen(value)), NULL);
102 break;
103 case VALUE_ADDR:
104 addr = host_create_from_string(value, 0);
105 if (addr == NULL)
106 {
107 fprintf(stderr, "invalid IP address: '%s'.\n", value);
108 return FALSE;
109 }
110 addr_chunk = addr->get_address(addr);
111 *blob = chunk_clone(addr_chunk);
112 break;
113 case VALUE_SUBNET:
114 *blob = chunk_empty;
115 pos_next = value;
116
117 do
118 {
119 pos_addr = pos_next;
120 pos_next = strchr(pos_next, ',');
121 if (pos_next)
122 {
123 *pos_next = '\0';
124 pos_next += 1;
125 }
126 pos_mask = strchr(pos_addr, '/');
127 if (pos_mask == NULL)
128 {
129 fprintf(stderr, "invalid IPv4 subnet: '%s'.\n", pos_addr);
130 free(blob->ptr);
131 return FALSE;
132 }
133 *pos_mask = '\0';
134 pos_mask += 1;
135 addr = host_create_from_string(pos_addr, 0);
136 mask = host_create_from_string(pos_mask, 0);
137 if (addr == NULL || addr->get_family(addr) != AF_INET ||
138 mask == NULL || mask->get_family(addr) != AF_INET)
139 {
140 fprintf(stderr, "invalid IPv4 subnet: '%s/%s'.\n",
141 pos_addr, pos_mask);
142 DESTROY_IF(addr);
143 DESTROY_IF(mask);
144 free(blob->ptr);
145 return FALSE;
146 }
147 addr_chunk = addr->get_address(addr);
148 mask_chunk = mask->get_address(mask);
149 blob_next = chunk_alloc(blob->len + UNITY_NETWORK_LEN);
150 memcpy(blob_next.ptr, blob->ptr, blob->len);
151 pos_addr = blob_next.ptr + blob->len;
152 memset(pos_addr, 0x00, UNITY_NETWORK_LEN);
153 memcpy(pos_addr, addr_chunk.ptr, 4);
154 memcpy(pos_addr + 4, mask_chunk.ptr, 4);
155 addr->destroy(addr);
156 mask->destroy(mask);
157 chunk_free(blob);
158 *blob = blob_next;
159 }
160 while (pos_next);
161 break;
162 case VALUE_NONE:
163 *blob = chunk_empty;
164 break;
165 }
166
167 /* init the attribute type */
168 *type = 0;
169 *type_ip6 = 0;
170
171 for (i = 0; i < countof(attr_info); i++)
172 {
173 if (strcaseeq(name, attr_info[i].keyword))
174 {
175 *type = attr_info[i].type;
176 *type_ip6 = attr_info[i].type_ip6;
177
178 if (*value_type == VALUE_NONE)
179 {
180 *value_type = attr_info[i].value_type;
181 return TRUE;
182 }
183
184 if (*value_type != attr_info[i].value_type &&
185 *value_type != VALUE_HEX)
186 {
187 switch (attr_info[i].value_type)
188 {
189 case VALUE_STRING:
190 text = "a string";
191 break;
192 case VALUE_HEX:
193 text = "a hex";
194 break;
195 case VALUE_ADDR:
196 text = "an IP address";
197 break;
198 case VALUE_SUBNET:
199 text = "a subnet";
200 break;
201 case VALUE_NONE:
202 text = "no";
203 break;
204 }
205 fprintf(stderr, "the %s attribute requires %s value.\n",
206 name, text);
207 DESTROY_IF(addr);
208 free(blob->ptr);
209 return FALSE;
210 }
211
212 if (*value_type == VALUE_ADDR)
213 {
214 *type = (addr->get_family(addr) == AF_INET) ?
215 attr_info[i].type : attr_info[i].type_ip6;
216 addr->destroy(addr);
217 }
218 else if (*value_type == VALUE_HEX)
219 {
220 *value_type = attr_info[i].value_type;
221
222 if (*value_type == VALUE_ADDR)
223 {
224 if (blob->len == 16)
225 {
226 *type = attr_info[i].type_ip6;
227 }
228 else if (blob->len != 4)
229 {
230 fprintf(stderr, "the %s attribute requires "
231 "a valid IP address.\n", name);
232 free(blob->ptr);
233 return FALSE;
234 }
235 }
236 }
237 return TRUE;
238 }
239 }
240
241 /* clean up */
242 DESTROY_IF(addr);
243
244 /* is the attribute type numeric? */
245 *type = strtol(name, &endptr, 10);
246
247 if (*endptr != '\0')
248 {
249 fprintf(stderr, "the %s attribute is not recognized.\n", name);
250 free(blob->ptr);
251 return FALSE;
252 }
253 if (*type < 1 || *type > 32767)
254 {
255 fprintf(stderr, "the attribute type must lie in the range 1..32767.\n");
256 free(blob->ptr);
257 return FALSE;
258 }
259 if (*value_type == VALUE_NONE)
260 {
261 *value_type = VALUE_HEX;
262 }
263 return TRUE;
264 }
265
266 /**
267 * ipsec pool --addattr <type> --string|server|subnet - add attribute entry
268 */
269 void add_attr(char *name, char *value, value_type_t value_type)
270 {
271 configuration_attribute_type_t type, type_ip6;
272 chunk_t blob;
273 bool success;
274
275 if (value_type == VALUE_NONE)
276 {
277 fprintf(stderr, "the value of the %s attribute is missing.\n", name);
278 usage();
279 exit(EXIT_FAILURE);
280 }
281 if (!parse_attributes(name, value, &value_type, &type, &type_ip6, &blob))
282 {
283 exit(EXIT_FAILURE);
284 }
285
286 success = db->execute(db, NULL,
287 "INSERT INTO attributes (type, value) VALUES (?, ?)",
288 DB_INT, type, DB_BLOB, blob) == 1;
289 free(blob.ptr);
290
291 if (success)
292 {
293 printf("added %s attribute (%N).\n", name,
294 configuration_attribute_type_names, type);
295 }
296 else
297 {
298 fprintf(stderr, "adding %s attribute (%N) failed.\n", name,
299 configuration_attribute_type_names, type);
300 exit(EXIT_FAILURE);
301 }
302 }
303
304 /**
305 * ipsec pool --delattr <type> --string|server|subnet - delete attribute entry
306 */
307 void del_attr(char *name, char *value, value_type_t value_type)
308 {
309 configuration_attribute_type_t type, type_ip6, type_db;
310 chunk_t blob, blob_db;
311 u_int id;
312 enumerator_t *query;
313 bool found = FALSE;
314
315 if (!parse_attributes(name, value, &value_type, &type, &type_ip6, &blob))
316 {
317 exit(EXIT_FAILURE);
318 }
319
320 if (blob.len > 0)
321 {
322 query = db->query(db,
323 "SELECT id, type, value FROM attributes "
324 "WHERE type = ? AND value = ?",
325 DB_INT, type, DB_BLOB, blob,
326 DB_UINT, DB_INT, DB_BLOB);
327 }
328 else if (type_ip6 == 0)
329 {
330 query = db->query(db,
331 "SELECT id, type, value FROM attributes "
332 "WHERE type = ?",
333 DB_INT, type,
334 DB_UINT, DB_INT, DB_BLOB);
335 }
336 else
337 {
338 query = db->query(db,
339 "SELECT id, type, value FROM attributes "
340 "WHERE type = ? OR type = ?",
341 DB_INT, type, DB_INT, type_ip6,
342 DB_UINT, DB_INT, DB_BLOB);
343 }
344
345 if (!query)
346 {
347 fprintf(stderr, "deleting '%s' attribute (%N) failed.\n",
348 name, configuration_attribute_type_names, type);
349 free(blob.ptr);
350 exit(EXIT_FAILURE);
351 }
352
353 while (query->enumerate(query, &id, &type_db, &blob_db))
354 {
355 host_t *server = NULL;
356
357 found = TRUE;
358
359 if (value_type == VALUE_ADDR)
360 {
361 int family = (type_db == type_ip6) ? AF_INET6 : AF_INET;
362
363 server = host_create_from_chunk(family, blob_db, 0);
364 }
365
366 if (db->execute(db, NULL,
367 "DELETE FROM attributes WHERE id = ?",
368 DB_UINT, id) != 1)
369 {
370 if (server)
371 {
372 fprintf(stderr, "deleting %s server %H failed\n", name, server);
373 server->destroy(server);
374 }
375 else if (value_type == VALUE_STRING)
376 {
377 fprintf(stderr, "deleting %s attribute (%N) with value '%.*s' failed.\n",
378 name, configuration_attribute_type_names, type,
379 blob_db.len, blob_db.ptr);
380 }
381
382 else
383 {
384 fprintf(stderr, "deleting %s attribute (%N) with value %#B failed.\n",
385 name, configuration_attribute_type_names, type,
386 &blob_db);
387 }
388 query->destroy(query);
389 free(blob.ptr);
390 exit(EXIT_FAILURE);
391 }
392 if (server)
393 {
394 printf("deleted %s server %H\n", name, server);
395 server->destroy(server);
396 }
397 else if (value_type == VALUE_STRING)
398 {
399 printf("deleted %s attribute (%N) with value '%.*s'.\n",
400 name, configuration_attribute_type_names, type,
401 blob_db.len, blob_db.ptr);
402 }
403 else
404 {
405 printf("deleted %s attribute (%N) with value %#B.\n",
406 name, configuration_attribute_type_names, type,
407 &blob_db);
408 }
409 }
410 query->destroy(query);
411
412 if (!found)
413 {
414 if (blob.len == 0)
415 {
416 if (type_ip6 == 0)
417 {
418 fprintf(stderr, "no %s attribute (%N) was found.\n", name,
419 configuration_attribute_type_names, type);
420 }
421 else
422 {
423 fprintf(stderr, "no %s attribute was found.\n", name);
424 }
425 }
426 else
427 {
428 if (value_type == VALUE_ADDR)
429 {
430 host_t *server = host_create_from_chunk(AF_UNSPEC, blob, 0);
431
432 fprintf(stderr, "the %s server %H was not found.\n", name,
433 server);
434 server->destroy(server);
435 }
436 else
437 {
438 fprintf(stderr, "the %s attribute (%N) with value '%.*s' "
439 "was not found.\n", name,
440 configuration_attribute_type_names, type,
441 blob.len, blob.ptr);
442 }
443 }
444 }
445 free(blob.ptr);
446 }
447
448 /**
449 * ipsec pool --statusattr - show all attribute entries
450 */
451 void status_attr(bool hexout)
452 {
453 configuration_attribute_type_t type;
454 value_type_t value_type;
455 chunk_t value, addr_chunk, mask_chunk;
456 enumerator_t *enumerator;
457 host_t *addr, *mask;
458 char type_name[30];
459 bool first = TRUE;
460 int i;
461
462 /* enumerate over all attributes */
463 enumerator = db->query(db, "SELECT type, value FROM attributes ORDER BY type",
464 DB_INT, DB_BLOB);
465 if (enumerator)
466 {
467 while (enumerator->enumerate(enumerator, &type, &value))
468 {
469 if (first)
470 {
471 printf(" type description value\n");
472 first = FALSE;
473 }
474 snprintf(type_name, sizeof(type_name), "%N",
475 configuration_attribute_type_names, type);
476 if (type_name[0] == '(')
477 {
478 type_name[0] = '\0';
479 }
480 printf("%5d %-20s ",type, type_name);
481
482 value_type = VALUE_HEX;
483 if (!hexout)
484 {
485 for (i = 0; i < countof(attr_info); i++)
486 {
487 if (type == attr_info[i].type)
488 {
489 value_type = attr_info[i].value_type;
490 break;
491 }
492 }
493 }
494 switch (value_type)
495 {
496 case VALUE_ADDR:
497 addr = host_create_from_chunk(AF_UNSPEC, value, 0);
498 if (addr)
499 {
500 printf(" %H\n", addr);
501 addr->destroy(addr);
502 }
503 else
504 {
505 /* value cannot be represented as an IP address */
506 printf(" %#B\n", &value);
507 }
508 break;
509 case VALUE_SUBNET:
510 if (value.len % UNITY_NETWORK_LEN == 0)
511 {
512 for (i = 0; i < value.len / UNITY_NETWORK_LEN; i++)
513 {
514 addr_chunk = chunk_create(value.ptr + i*UNITY_NETWORK_LEN, 4);
515 addr = host_create_from_chunk(AF_INET, addr_chunk, 0);
516 mask_chunk = chunk_create(addr_chunk.ptr + 4, 4);
517 mask = host_create_from_chunk(AF_INET, mask_chunk, 0);
518 printf("%s%H/%H", (i > 0) ? "," : " ", addr, mask);
519 addr->destroy(addr);
520 mask->destroy(mask);
521 }
522 printf("\n");
523 }
524 else
525 {
526 /* value cannot be represented as a list of subnets */
527 printf(" %#B\n", &value);
528 }
529 break;
530 case VALUE_STRING:
531 printf("\"%.*s\"\n", value.len, value.ptr);
532 break;
533 case VALUE_HEX:
534 default:
535 printf(" %#B\n", &value);
536 }
537 }
538 enumerator->destroy(enumerator);
539 }
540 }
541
542 /**
543 * ipsec pool --showattr - show all supported attribute keywords
544 */
545 void show_attr(void)
546 {
547 int i;
548
549 for (i = 0; i < countof(attr_info); i++)
550 {
551 char value_name[10];
552
553
554 snprintf(value_name, sizeof(value_name), "%N",
555 value_type_names, attr_info[i].value_type);
556
557 printf("%-20s --%-6s (%N",
558 attr_info[i].keyword, value_name,
559 configuration_attribute_type_names, attr_info[i].type);
560
561 if (attr_info[i].type_ip6)
562 {
563 printf(", %N)\n",
564 configuration_attribute_type_names, attr_info[i].type_ip6);
565 }
566 else
567 {
568 printf(")\n");
569 }
570 }
571 }
572