Commit | Line | Data |
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cc04acf5 KS |
1 | /* |
2 | * An implementation of key value pair (KVP) functionality for Linux. | |
3 | * | |
4 | * | |
5 | * Copyright (C) 2010, Novell, Inc. | |
6 | * Author : K. Y. Srinivasan <ksrinivasan@novell.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License version 2 as published | |
10 | * by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
15 | * NON INFRINGEMENT. See the GNU General Public License for more | |
16 | * details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
21 | * | |
22 | */ | |
23 | ||
24 | ||
25 | #include <sys/types.h> | |
26 | #include <sys/socket.h> | |
27 | #include <sys/poll.h> | |
28 | #include <sys/utsname.h> | |
29 | #include <linux/types.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <unistd.h> | |
33 | #include <string.h> | |
32061b4d | 34 | #include <ctype.h> |
cc04acf5 KS |
35 | #include <errno.h> |
36 | #include <arpa/inet.h> | |
37 | #include <linux/connector.h> | |
eab6af71 | 38 | #include <linux/hyperv.h> |
cc04acf5 | 39 | #include <linux/netlink.h> |
cc04acf5 KS |
40 | #include <ifaddrs.h> |
41 | #include <netdb.h> | |
42 | #include <syslog.h> | |
db425334 S |
43 | #include <sys/stat.h> |
44 | #include <fcntl.h> | |
32061b4d | 45 | #include <dirent.h> |
3321e738 | 46 | #include <net/if.h> |
cc04acf5 KS |
47 | |
48 | /* | |
49 | * KVP protocol: The user mode component first registers with the | |
50 | * the kernel component. Subsequently, the kernel component requests, data | |
51 | * for the specified keys. In response to this message the user mode component | |
52 | * fills in the value corresponding to the specified key. We overload the | |
53 | * sequence field in the cn_msg header to define our KVP message types. | |
54 | * | |
55 | * We use this infrastructure for also supporting queries from user mode | |
56 | * application for state that may be maintained in the KVP kernel component. | |
57 | * | |
cc04acf5 KS |
58 | */ |
59 | ||
cc04acf5 KS |
60 | |
61 | enum key_index { | |
62 | FullyQualifiedDomainName = 0, | |
63 | IntegrationServicesVersion, /*This key is serviced in the kernel*/ | |
64 | NetworkAddressIPv4, | |
65 | NetworkAddressIPv6, | |
66 | OSBuildNumber, | |
67 | OSName, | |
68 | OSMajorVersion, | |
69 | OSMinorVersion, | |
70 | OSVersion, | |
71 | ProcessorArchitecture | |
72 | }; | |
73 | ||
32061b4d S |
74 | |
75 | enum { | |
76 | IPADDR = 0, | |
77 | NETMASK, | |
78 | GATEWAY, | |
79 | DNS | |
80 | }; | |
81 | ||
cc04acf5 | 82 | static char kvp_send_buffer[4096]; |
9b595780 | 83 | static char kvp_recv_buffer[4096 * 2]; |
cc04acf5 | 84 | static struct sockaddr_nl addr; |
b47a81dc | 85 | static int in_hand_shake = 1; |
cc04acf5 | 86 | |
7989f7d5 OH |
87 | static char *os_name = ""; |
88 | static char *os_major = ""; | |
89 | static char *os_minor = ""; | |
90 | static char *processor_arch; | |
91 | static char *os_build; | |
f426a36c | 92 | static char *os_version; |
b47a81dc | 93 | static char *lic_version = "Unknown version"; |
7989f7d5 | 94 | static struct utsname uts_buf; |
cc04acf5 | 95 | |
32061b4d S |
96 | /* |
97 | * The location of the interface configuration file. | |
98 | */ | |
99 | ||
40424f5f | 100 | #define KVP_CONFIG_LOC "/var/lib/hyperv" |
db425334 S |
101 | |
102 | #define MAX_FILE_NAME 100 | |
103 | #define ENTRIES_PER_BLOCK 50 | |
104 | ||
105 | struct kvp_record { | |
d0cbc156 S |
106 | char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
107 | char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; | |
db425334 S |
108 | }; |
109 | ||
110 | struct kvp_file_state { | |
111 | int fd; | |
112 | int num_blocks; | |
113 | struct kvp_record *records; | |
114 | int num_records; | |
d0cbc156 | 115 | char fname[MAX_FILE_NAME]; |
db425334 S |
116 | }; |
117 | ||
118 | static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; | |
119 | ||
120 | static void kvp_acquire_lock(int pool) | |
121 | { | |
122 | struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0}; | |
123 | fl.l_pid = getpid(); | |
124 | ||
125 | if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { | |
126 | syslog(LOG_ERR, "Failed to acquire the lock pool: %d", pool); | |
6bb22fea | 127 | exit(EXIT_FAILURE); |
db425334 S |
128 | } |
129 | } | |
130 | ||
131 | static void kvp_release_lock(int pool) | |
132 | { | |
133 | struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0}; | |
134 | fl.l_pid = getpid(); | |
135 | ||
136 | if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { | |
137 | perror("fcntl"); | |
138 | syslog(LOG_ERR, "Failed to release the lock pool: %d", pool); | |
6bb22fea | 139 | exit(EXIT_FAILURE); |
db425334 S |
140 | } |
141 | } | |
142 | ||
143 | static void kvp_update_file(int pool) | |
144 | { | |
145 | FILE *filep; | |
146 | size_t bytes_written; | |
147 | ||
148 | /* | |
149 | * We are going to write our in-memory registry out to | |
150 | * disk; acquire the lock first. | |
151 | */ | |
152 | kvp_acquire_lock(pool); | |
153 | ||
154 | filep = fopen(kvp_file_info[pool].fname, "w"); | |
155 | if (!filep) { | |
156 | kvp_release_lock(pool); | |
157 | syslog(LOG_ERR, "Failed to open file, pool: %d", pool); | |
6bb22fea | 158 | exit(EXIT_FAILURE); |
db425334 S |
159 | } |
160 | ||
161 | bytes_written = fwrite(kvp_file_info[pool].records, | |
162 | sizeof(struct kvp_record), | |
163 | kvp_file_info[pool].num_records, filep); | |
164 | ||
436473bc BH |
165 | if (ferror(filep) || fclose(filep)) { |
166 | kvp_release_lock(pool); | |
167 | syslog(LOG_ERR, "Failed to write file, pool: %d", pool); | |
168 | exit(EXIT_FAILURE); | |
169 | } | |
170 | ||
db425334 S |
171 | kvp_release_lock(pool); |
172 | } | |
173 | ||
adc80ae6 S |
174 | static void kvp_update_mem_state(int pool) |
175 | { | |
176 | FILE *filep; | |
177 | size_t records_read = 0; | |
178 | struct kvp_record *record = kvp_file_info[pool].records; | |
179 | struct kvp_record *readp; | |
180 | int num_blocks = kvp_file_info[pool].num_blocks; | |
181 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
182 | ||
183 | kvp_acquire_lock(pool); | |
184 | ||
185 | filep = fopen(kvp_file_info[pool].fname, "r"); | |
186 | if (!filep) { | |
187 | kvp_release_lock(pool); | |
188 | syslog(LOG_ERR, "Failed to open file, pool: %d", pool); | |
6bb22fea | 189 | exit(EXIT_FAILURE); |
adc80ae6 | 190 | } |
436473bc | 191 | for (;;) { |
adc80ae6 S |
192 | readp = &record[records_read]; |
193 | records_read += fread(readp, sizeof(struct kvp_record), | |
194 | ENTRIES_PER_BLOCK * num_blocks, | |
195 | filep); | |
196 | ||
436473bc BH |
197 | if (ferror(filep)) { |
198 | syslog(LOG_ERR, "Failed to read file, pool: %d", pool); | |
199 | exit(EXIT_FAILURE); | |
200 | } | |
201 | ||
adc80ae6 S |
202 | if (!feof(filep)) { |
203 | /* | |
204 | * We have more data to read. | |
205 | */ | |
206 | num_blocks++; | |
207 | record = realloc(record, alloc_unit * num_blocks); | |
208 | ||
209 | if (record == NULL) { | |
210 | syslog(LOG_ERR, "malloc failed"); | |
6bb22fea | 211 | exit(EXIT_FAILURE); |
adc80ae6 S |
212 | } |
213 | continue; | |
214 | } | |
215 | break; | |
216 | } | |
217 | ||
218 | kvp_file_info[pool].num_blocks = num_blocks; | |
219 | kvp_file_info[pool].records = record; | |
220 | kvp_file_info[pool].num_records = records_read; | |
221 | ||
d5ab4827 | 222 | fclose(filep); |
adc80ae6 S |
223 | kvp_release_lock(pool); |
224 | } | |
db425334 S |
225 | static int kvp_file_init(void) |
226 | { | |
00b83355 | 227 | int fd; |
db425334 S |
228 | FILE *filep; |
229 | size_t records_read; | |
d0cbc156 | 230 | char *fname; |
db425334 S |
231 | struct kvp_record *record; |
232 | struct kvp_record *readp; | |
233 | int num_blocks; | |
234 | int i; | |
235 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
236 | ||
40424f5f | 237 | if (access(KVP_CONFIG_LOC, F_OK)) { |
0bffd25c | 238 | if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) { |
40424f5f | 239 | syslog(LOG_ERR, " Failed to create %s", KVP_CONFIG_LOC); |
6bb22fea | 240 | exit(EXIT_FAILURE); |
db425334 S |
241 | } |
242 | } | |
243 | ||
244 | for (i = 0; i < KVP_POOL_COUNT; i++) { | |
245 | fname = kvp_file_info[i].fname; | |
246 | records_read = 0; | |
247 | num_blocks = 1; | |
40424f5f | 248 | sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); |
0bffd25c | 249 | fd = open(fname, O_RDWR | O_CREAT, 0644 /* rw-r--r-- */); |
db425334 S |
250 | |
251 | if (fd == -1) | |
252 | return 1; | |
253 | ||
254 | ||
255 | filep = fopen(fname, "r"); | |
256 | if (!filep) | |
257 | return 1; | |
258 | ||
259 | record = malloc(alloc_unit * num_blocks); | |
260 | if (record == NULL) { | |
261 | fclose(filep); | |
262 | return 1; | |
263 | } | |
436473bc | 264 | for (;;) { |
db425334 S |
265 | readp = &record[records_read]; |
266 | records_read += fread(readp, sizeof(struct kvp_record), | |
267 | ENTRIES_PER_BLOCK, | |
268 | filep); | |
269 | ||
436473bc BH |
270 | if (ferror(filep)) { |
271 | syslog(LOG_ERR, "Failed to read file, pool: %d", | |
272 | i); | |
273 | exit(EXIT_FAILURE); | |
274 | } | |
275 | ||
db425334 S |
276 | if (!feof(filep)) { |
277 | /* | |
278 | * We have more data to read. | |
279 | */ | |
280 | num_blocks++; | |
281 | record = realloc(record, alloc_unit * | |
282 | num_blocks); | |
283 | if (record == NULL) { | |
284 | fclose(filep); | |
285 | return 1; | |
286 | } | |
287 | continue; | |
288 | } | |
289 | break; | |
290 | } | |
291 | kvp_file_info[i].fd = fd; | |
292 | kvp_file_info[i].num_blocks = num_blocks; | |
293 | kvp_file_info[i].records = record; | |
294 | kvp_file_info[i].num_records = records_read; | |
295 | fclose(filep); | |
296 | ||
297 | } | |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
d892de8d | 302 | static int kvp_key_delete(int pool, const char *key, int key_size) |
db425334 S |
303 | { |
304 | int i; | |
305 | int j, k; | |
adc80ae6 S |
306 | int num_records; |
307 | struct kvp_record *record; | |
308 | ||
309 | /* | |
310 | * First update the in-memory state. | |
311 | */ | |
312 | kvp_update_mem_state(pool); | |
313 | ||
314 | num_records = kvp_file_info[pool].num_records; | |
315 | record = kvp_file_info[pool].records; | |
db425334 S |
316 | |
317 | for (i = 0; i < num_records; i++) { | |
318 | if (memcmp(key, record[i].key, key_size)) | |
319 | continue; | |
320 | /* | |
321 | * Found a match; just move the remaining | |
322 | * entries up. | |
323 | */ | |
324 | if (i == num_records) { | |
325 | kvp_file_info[pool].num_records--; | |
326 | kvp_update_file(pool); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | j = i; | |
331 | k = j + 1; | |
332 | for (; k < num_records; k++) { | |
333 | strcpy(record[j].key, record[k].key); | |
334 | strcpy(record[j].value, record[k].value); | |
335 | j++; | |
336 | } | |
337 | ||
338 | kvp_file_info[pool].num_records--; | |
339 | kvp_update_file(pool); | |
340 | return 0; | |
341 | } | |
342 | return 1; | |
343 | } | |
344 | ||
d892de8d | 345 | static int kvp_key_add_or_modify(int pool, const char *key, int key_size, const char *value, |
db425334 S |
346 | int value_size) |
347 | { | |
348 | int i; | |
adc80ae6 S |
349 | int num_records; |
350 | struct kvp_record *record; | |
351 | int num_blocks; | |
db425334 S |
352 | |
353 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
354 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
355 | return 1; | |
356 | ||
adc80ae6 S |
357 | /* |
358 | * First update the in-memory state. | |
359 | */ | |
360 | kvp_update_mem_state(pool); | |
361 | ||
362 | num_records = kvp_file_info[pool].num_records; | |
363 | record = kvp_file_info[pool].records; | |
364 | num_blocks = kvp_file_info[pool].num_blocks; | |
365 | ||
db425334 S |
366 | for (i = 0; i < num_records; i++) { |
367 | if (memcmp(key, record[i].key, key_size)) | |
368 | continue; | |
369 | /* | |
370 | * Found a match; just update the value - | |
371 | * this is the modify case. | |
372 | */ | |
373 | memcpy(record[i].value, value, value_size); | |
374 | kvp_update_file(pool); | |
375 | return 0; | |
376 | } | |
377 | ||
378 | /* | |
379 | * Need to add a new entry; | |
380 | */ | |
381 | if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { | |
382 | /* Need to allocate a larger array for reg entries. */ | |
383 | record = realloc(record, sizeof(struct kvp_record) * | |
384 | ENTRIES_PER_BLOCK * (num_blocks + 1)); | |
385 | ||
386 | if (record == NULL) | |
387 | return 1; | |
388 | kvp_file_info[pool].num_blocks++; | |
389 | ||
390 | } | |
391 | memcpy(record[i].value, value, value_size); | |
392 | memcpy(record[i].key, key, key_size); | |
393 | kvp_file_info[pool].records = record; | |
394 | kvp_file_info[pool].num_records++; | |
395 | kvp_update_file(pool); | |
396 | return 0; | |
397 | } | |
398 | ||
d892de8d | 399 | static int kvp_get_value(int pool, const char *key, int key_size, char *value, |
db425334 S |
400 | int value_size) |
401 | { | |
402 | int i; | |
adc80ae6 S |
403 | int num_records; |
404 | struct kvp_record *record; | |
db425334 S |
405 | |
406 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
407 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
408 | return 1; | |
409 | ||
adc80ae6 S |
410 | /* |
411 | * First update the in-memory state. | |
412 | */ | |
413 | kvp_update_mem_state(pool); | |
414 | ||
415 | num_records = kvp_file_info[pool].num_records; | |
416 | record = kvp_file_info[pool].records; | |
417 | ||
db425334 S |
418 | for (i = 0; i < num_records; i++) { |
419 | if (memcmp(key, record[i].key, key_size)) | |
420 | continue; | |
421 | /* | |
422 | * Found a match; just copy the value out. | |
423 | */ | |
424 | memcpy(value, record[i].value, value_size); | |
425 | return 0; | |
426 | } | |
427 | ||
428 | return 1; | |
429 | } | |
430 | ||
d892de8d TH |
431 | static int kvp_pool_enumerate(int pool, int index, char *key, int key_size, |
432 | char *value, int value_size) | |
adc80ae6 S |
433 | { |
434 | struct kvp_record *record; | |
435 | ||
436 | /* | |
437 | * First update our in-memory database. | |
438 | */ | |
439 | kvp_update_mem_state(pool); | |
440 | record = kvp_file_info[pool].records; | |
441 | ||
442 | if (index >= kvp_file_info[pool].num_records) { | |
b47a81dc | 443 | return 1; |
adc80ae6 S |
444 | } |
445 | ||
446 | memcpy(key, record[index].key, key_size); | |
447 | memcpy(value, record[index].value, value_size); | |
b47a81dc | 448 | return 0; |
adc80ae6 S |
449 | } |
450 | ||
451 | ||
cc04acf5 KS |
452 | void kvp_get_os_info(void) |
453 | { | |
454 | FILE *file; | |
7989f7d5 | 455 | char *p, buf[512]; |
cc04acf5 | 456 | |
7989f7d5 | 457 | uname(&uts_buf); |
f426a36c S |
458 | os_version = uts_buf.release; |
459 | os_build = strdup(uts_buf.release); | |
460 | ||
44c8b25f | 461 | os_name = uts_buf.sysname; |
064931d0 | 462 | processor_arch = uts_buf.machine; |
cc04acf5 | 463 | |
e54bbc64 S |
464 | /* |
465 | * The current windows host (win7) expects the build | |
466 | * string to be of the form: x.y.z | |
467 | * Strip additional information we may have. | |
468 | */ | |
f426a36c | 469 | p = strchr(os_version, '-'); |
e54bbc64 S |
470 | if (p) |
471 | *p = '\0'; | |
472 | ||
44c8b25f BH |
473 | /* |
474 | * Parse the /etc/os-release file if present: | |
475 | * http://www.freedesktop.org/software/systemd/man/os-release.html | |
476 | */ | |
477 | file = fopen("/etc/os-release", "r"); | |
478 | if (file != NULL) { | |
479 | while (fgets(buf, sizeof(buf), file)) { | |
480 | char *value, *q; | |
481 | ||
482 | /* Ignore comments */ | |
483 | if (buf[0] == '#') | |
484 | continue; | |
485 | ||
486 | /* Split into name=value */ | |
487 | p = strchr(buf, '='); | |
488 | if (!p) | |
489 | continue; | |
490 | *p++ = 0; | |
491 | ||
492 | /* Remove quotes and newline; un-escape */ | |
493 | value = p; | |
494 | q = p; | |
495 | while (*p) { | |
496 | if (*p == '\\') { | |
497 | ++p; | |
498 | if (!*p) | |
499 | break; | |
500 | *q++ = *p++; | |
501 | } else if (*p == '\'' || *p == '"' || | |
502 | *p == '\n') { | |
503 | ++p; | |
504 | } else { | |
505 | *q++ = *p++; | |
506 | } | |
507 | } | |
508 | *q = 0; | |
509 | ||
510 | if (!strcmp(buf, "NAME")) { | |
511 | p = strdup(value); | |
512 | if (!p) | |
513 | break; | |
514 | os_name = p; | |
515 | } else if (!strcmp(buf, "VERSION_ID")) { | |
516 | p = strdup(value); | |
517 | if (!p) | |
518 | break; | |
519 | os_major = p; | |
520 | } | |
521 | } | |
522 | fclose(file); | |
523 | return; | |
524 | } | |
525 | ||
526 | /* Fallback for older RH/SUSE releases */ | |
cc04acf5 KS |
527 | file = fopen("/etc/SuSE-release", "r"); |
528 | if (file != NULL) | |
529 | goto kvp_osinfo_found; | |
530 | file = fopen("/etc/redhat-release", "r"); | |
531 | if (file != NULL) | |
532 | goto kvp_osinfo_found; | |
cc04acf5 KS |
533 | |
534 | /* | |
535 | * We don't have information about the os. | |
536 | */ | |
cc04acf5 KS |
537 | return; |
538 | ||
539 | kvp_osinfo_found: | |
7989f7d5 OH |
540 | /* up to three lines */ |
541 | p = fgets(buf, sizeof(buf), file); | |
542 | if (p) { | |
543 | p = strchr(buf, '\n'); | |
544 | if (p) | |
545 | *p = '\0'; | |
546 | p = strdup(buf); | |
547 | if (!p) | |
548 | goto done; | |
549 | os_name = p; | |
550 | ||
551 | /* second line */ | |
552 | p = fgets(buf, sizeof(buf), file); | |
553 | if (p) { | |
554 | p = strchr(buf, '\n'); | |
555 | if (p) | |
556 | *p = '\0'; | |
557 | p = strdup(buf); | |
558 | if (!p) | |
559 | goto done; | |
560 | os_major = p; | |
561 | ||
562 | /* third line */ | |
563 | p = fgets(buf, sizeof(buf), file); | |
564 | if (p) { | |
565 | p = strchr(buf, '\n'); | |
566 | if (p) | |
567 | *p = '\0'; | |
568 | p = strdup(buf); | |
569 | if (p) | |
570 | os_minor = p; | |
571 | } | |
572 | } | |
573 | } | |
574 | ||
575 | done: | |
cc04acf5 KS |
576 | fclose(file); |
577 | return; | |
578 | } | |
579 | ||
32061b4d S |
580 | |
581 | ||
582 | /* | |
583 | * Retrieve an interface name corresponding to the specified guid. | |
584 | * If there is a match, the function returns a pointer | |
585 | * to the interface name and if not, a NULL is returned. | |
586 | * If a match is found, the caller is responsible for | |
587 | * freeing the memory. | |
588 | */ | |
589 | ||
590 | static char *kvp_get_if_name(char *guid) | |
591 | { | |
592 | DIR *dir; | |
593 | struct dirent *entry; | |
594 | FILE *file; | |
595 | char *p, *q, *x; | |
596 | char *if_name = NULL; | |
597 | char buf[256]; | |
598 | char *kvp_net_dir = "/sys/class/net/"; | |
599 | char dev_id[256]; | |
600 | ||
601 | dir = opendir(kvp_net_dir); | |
602 | if (dir == NULL) | |
603 | return NULL; | |
604 | ||
605 | snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); | |
606 | q = dev_id + strlen(kvp_net_dir); | |
607 | ||
608 | while ((entry = readdir(dir)) != NULL) { | |
609 | /* | |
610 | * Set the state for the next pass. | |
611 | */ | |
612 | *q = '\0'; | |
613 | strcat(dev_id, entry->d_name); | |
614 | strcat(dev_id, "/device/device_id"); | |
615 | ||
616 | file = fopen(dev_id, "r"); | |
617 | if (file == NULL) | |
618 | continue; | |
619 | ||
620 | p = fgets(buf, sizeof(buf), file); | |
621 | if (p) { | |
622 | x = strchr(p, '\n'); | |
623 | if (x) | |
624 | *x = '\0'; | |
625 | ||
626 | if (!strcmp(p, guid)) { | |
627 | /* | |
628 | * Found the guid match; return the interface | |
629 | * name. The caller will free the memory. | |
630 | */ | |
631 | if_name = strdup(entry->d_name); | |
632 | fclose(file); | |
633 | break; | |
634 | } | |
635 | } | |
636 | fclose(file); | |
637 | } | |
638 | ||
639 | closedir(dir); | |
640 | return if_name; | |
641 | } | |
642 | ||
643 | /* | |
644 | * Retrieve the MAC address given the interface name. | |
645 | */ | |
646 | ||
647 | static char *kvp_if_name_to_mac(char *if_name) | |
648 | { | |
649 | FILE *file; | |
650 | char *p, *x; | |
651 | char buf[256]; | |
652 | char addr_file[256]; | |
653 | int i; | |
654 | char *mac_addr = NULL; | |
655 | ||
656 | snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", | |
657 | if_name, "/address"); | |
658 | ||
659 | file = fopen(addr_file, "r"); | |
660 | if (file == NULL) | |
661 | return NULL; | |
662 | ||
663 | p = fgets(buf, sizeof(buf), file); | |
664 | if (p) { | |
665 | x = strchr(p, '\n'); | |
666 | if (x) | |
667 | *x = '\0'; | |
668 | for (i = 0; i < strlen(p); i++) | |
669 | p[i] = toupper(p[i]); | |
670 | mac_addr = strdup(p); | |
671 | } | |
672 | ||
673 | fclose(file); | |
674 | return mac_addr; | |
675 | } | |
676 | ||
677 | ||
16e87100 S |
678 | /* |
679 | * Retrieve the interface name given tha MAC address. | |
680 | */ | |
681 | ||
682 | static char *kvp_mac_to_if_name(char *mac) | |
683 | { | |
684 | DIR *dir; | |
685 | struct dirent *entry; | |
686 | FILE *file; | |
687 | char *p, *q, *x; | |
688 | char *if_name = NULL; | |
689 | char buf[256]; | |
690 | char *kvp_net_dir = "/sys/class/net/"; | |
691 | char dev_id[256]; | |
692 | int i; | |
693 | ||
694 | dir = opendir(kvp_net_dir); | |
695 | if (dir == NULL) | |
696 | return NULL; | |
697 | ||
698 | snprintf(dev_id, sizeof(dev_id), kvp_net_dir); | |
699 | q = dev_id + strlen(kvp_net_dir); | |
700 | ||
701 | while ((entry = readdir(dir)) != NULL) { | |
702 | /* | |
703 | * Set the state for the next pass. | |
704 | */ | |
705 | *q = '\0'; | |
706 | ||
707 | strcat(dev_id, entry->d_name); | |
708 | strcat(dev_id, "/address"); | |
709 | ||
710 | file = fopen(dev_id, "r"); | |
711 | if (file == NULL) | |
712 | continue; | |
713 | ||
714 | p = fgets(buf, sizeof(buf), file); | |
715 | if (p) { | |
716 | x = strchr(p, '\n'); | |
717 | if (x) | |
718 | *x = '\0'; | |
719 | ||
720 | for (i = 0; i < strlen(p); i++) | |
721 | p[i] = toupper(p[i]); | |
722 | ||
723 | if (!strcmp(p, mac)) { | |
724 | /* | |
725 | * Found the MAC match; return the interface | |
726 | * name. The caller will free the memory. | |
727 | */ | |
728 | if_name = strdup(entry->d_name); | |
729 | fclose(file); | |
730 | break; | |
731 | } | |
732 | } | |
733 | fclose(file); | |
734 | } | |
735 | ||
736 | closedir(dir); | |
737 | return if_name; | |
738 | } | |
739 | ||
740 | ||
4a52c4af S |
741 | static void kvp_process_ipconfig_file(char *cmd, |
742 | char *config_buf, int len, | |
743 | int element_size, int offset) | |
744 | { | |
745 | char buf[256]; | |
746 | char *p; | |
747 | char *x; | |
748 | FILE *file; | |
749 | ||
750 | /* | |
751 | * First execute the command. | |
752 | */ | |
753 | file = popen(cmd, "r"); | |
754 | if (file == NULL) | |
755 | return; | |
756 | ||
757 | if (offset == 0) | |
758 | memset(config_buf, 0, len); | |
759 | while ((p = fgets(buf, sizeof(buf), file)) != NULL) { | |
760 | if ((len - strlen(config_buf)) < (element_size + 1)) | |
761 | break; | |
762 | ||
763 | x = strchr(p, '\n'); | |
764 | *x = '\0'; | |
765 | strcat(config_buf, p); | |
766 | strcat(config_buf, ";"); | |
767 | } | |
768 | pclose(file); | |
769 | } | |
770 | ||
771 | static void kvp_get_ipconfig_info(char *if_name, | |
772 | struct hv_kvp_ipaddr_value *buffer) | |
773 | { | |
774 | char cmd[512]; | |
c0503725 S |
775 | char dhcp_info[128]; |
776 | char *p; | |
777 | FILE *file; | |
4a52c4af S |
778 | |
779 | /* | |
780 | * Get the address of default gateway (ipv4). | |
781 | */ | |
782 | sprintf(cmd, "%s %s", "ip route show dev", if_name); | |
783 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
784 | ||
785 | /* | |
786 | * Execute the command to gather gateway info. | |
787 | */ | |
788 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
789 | (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); | |
790 | ||
791 | /* | |
792 | * Get the address of default gateway (ipv6). | |
793 | */ | |
794 | sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); | |
795 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
796 | ||
797 | /* | |
798 | * Execute the command to gather gateway info (ipv6). | |
799 | */ | |
800 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
801 | (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); | |
802 | ||
96929887 S |
803 | |
804 | /* | |
805 | * Gather the DNS state. | |
806 | * Since there is no standard way to get this information | |
807 | * across various distributions of interest; we just invoke | |
808 | * an external script that needs to be ported across distros | |
809 | * of interest. | |
810 | * | |
811 | * Following is the expected format of the information from the script: | |
812 | * | |
813 | * ipaddr1 (nameserver1) | |
814 | * ipaddr2 (nameserver2) | |
815 | * . | |
816 | * . | |
817 | */ | |
818 | ||
819 | sprintf(cmd, "%s", "hv_get_dns_info"); | |
820 | ||
821 | /* | |
822 | * Execute the command to gather DNS info. | |
823 | */ | |
824 | kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, | |
825 | (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); | |
c0503725 S |
826 | |
827 | /* | |
828 | * Gather the DHCP state. | |
829 | * We will gather this state by invoking an external script. | |
830 | * The parameter to the script is the interface name. | |
831 | * Here is the expected output: | |
832 | * | |
833 | * Enabled: DHCP enabled. | |
834 | */ | |
835 | ||
836 | sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name); | |
837 | ||
838 | file = popen(cmd, "r"); | |
839 | if (file == NULL) | |
840 | return; | |
841 | ||
842 | p = fgets(dhcp_info, sizeof(dhcp_info), file); | |
843 | if (p == NULL) { | |
844 | pclose(file); | |
845 | return; | |
846 | } | |
847 | ||
848 | if (!strncmp(p, "Enabled", 7)) | |
849 | buffer->dhcp_enabled = 1; | |
850 | else | |
851 | buffer->dhcp_enabled = 0; | |
852 | ||
853 | pclose(file); | |
4a52c4af S |
854 | } |
855 | ||
856 | ||
6a60a6a8 S |
857 | static unsigned int hweight32(unsigned int *w) |
858 | { | |
859 | unsigned int res = *w - ((*w >> 1) & 0x55555555); | |
860 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
861 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
862 | res = res + (res >> 8); | |
863 | return (res + (res >> 16)) & 0x000000FF; | |
864 | } | |
865 | ||
af733015 S |
866 | static int kvp_process_ip_address(void *addrp, |
867 | int family, char *buffer, | |
868 | int length, int *offset) | |
869 | { | |
870 | struct sockaddr_in *addr; | |
871 | struct sockaddr_in6 *addr6; | |
872 | int addr_length; | |
873 | char tmp[50]; | |
874 | const char *str; | |
875 | ||
876 | if (family == AF_INET) { | |
877 | addr = (struct sockaddr_in *)addrp; | |
878 | str = inet_ntop(family, &addr->sin_addr, tmp, 50); | |
879 | addr_length = INET_ADDRSTRLEN; | |
880 | } else { | |
881 | addr6 = (struct sockaddr_in6 *)addrp; | |
882 | str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); | |
883 | addr_length = INET6_ADDRSTRLEN; | |
884 | } | |
885 | ||
3321e738 | 886 | if ((length - *offset) < addr_length + 2) |
16e87100 | 887 | return HV_E_FAIL; |
af733015 S |
888 | if (str == NULL) { |
889 | strcpy(buffer, "inet_ntop failed\n"); | |
16e87100 | 890 | return HV_E_FAIL; |
af733015 S |
891 | } |
892 | if (*offset == 0) | |
893 | strcpy(buffer, tmp); | |
3321e738 S |
894 | else { |
895 | strcat(buffer, ";"); | |
af733015 | 896 | strcat(buffer, tmp); |
3321e738 | 897 | } |
af733015 S |
898 | |
899 | *offset += strlen(str) + 1; | |
3321e738 | 900 | |
af733015 S |
901 | return 0; |
902 | } | |
903 | ||
cc04acf5 | 904 | static int |
4a3b97e5 | 905 | kvp_get_ip_info(int family, char *if_name, int op, |
0ecaa198 | 906 | void *out_buffer, int length) |
cc04acf5 KS |
907 | { |
908 | struct ifaddrs *ifap; | |
909 | struct ifaddrs *curp; | |
cc04acf5 | 910 | int offset = 0; |
04405784 | 911 | int sn_offset = 0; |
cc04acf5 | 912 | int error = 0; |
0ecaa198 S |
913 | char *buffer; |
914 | struct hv_kvp_ipaddr_value *ip_buffer; | |
6a60a6a8 S |
915 | char cidr_mask[5]; /* /xyz */ |
916 | int weight; | |
917 | int i; | |
918 | unsigned int *w; | |
919 | char *sn_str; | |
920 | struct sockaddr_in6 *addr6; | |
0ecaa198 S |
921 | |
922 | if (op == KVP_OP_ENUMERATE) { | |
923 | buffer = out_buffer; | |
924 | } else { | |
925 | ip_buffer = out_buffer; | |
926 | buffer = (char *)ip_buffer->ip_addr; | |
927 | ip_buffer->addr_family = 0; | |
928 | } | |
cc04acf5 KS |
929 | /* |
930 | * On entry into this function, the buffer is capable of holding the | |
0ecaa198 | 931 | * maximum key value. |
cc04acf5 KS |
932 | */ |
933 | ||
934 | if (getifaddrs(&ifap)) { | |
935 | strcpy(buffer, "getifaddrs failed\n"); | |
16e87100 | 936 | return HV_E_FAIL; |
cc04acf5 KS |
937 | } |
938 | ||
939 | curp = ifap; | |
940 | while (curp != NULL) { | |
0ecaa198 S |
941 | if (curp->ifa_addr == NULL) { |
942 | curp = curp->ifa_next; | |
943 | continue; | |
944 | } | |
cc04acf5 | 945 | |
0ecaa198 S |
946 | if ((if_name != NULL) && |
947 | (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { | |
948 | /* | |
949 | * We want info about a specific interface; | |
950 | * just continue. | |
951 | */ | |
952 | curp = curp->ifa_next; | |
953 | continue; | |
954 | } | |
cc04acf5 | 955 | |
0ecaa198 S |
956 | /* |
957 | * We only support two address families: AF_INET and AF_INET6. | |
958 | * If a family value of 0 is specified, we collect both | |
959 | * supported address families; if not we gather info on | |
960 | * the specified address family. | |
961 | */ | |
3321e738 S |
962 | if ((((family != 0) && |
963 | (curp->ifa_addr->sa_family != family))) || | |
964 | (curp->ifa_flags & IFF_LOOPBACK)) { | |
0ecaa198 S |
965 | curp = curp->ifa_next; |
966 | continue; | |
967 | } | |
968 | if ((curp->ifa_addr->sa_family != AF_INET) && | |
969 | (curp->ifa_addr->sa_family != AF_INET6)) { | |
970 | curp = curp->ifa_next; | |
971 | continue; | |
972 | } | |
973 | ||
0d5b6b19 S |
974 | if (op == KVP_OP_GET_IP_INFO) { |
975 | /* | |
976 | * Gather info other than the IP address. | |
977 | * IP address info will be gathered later. | |
978 | */ | |
04405784 | 979 | if (curp->ifa_addr->sa_family == AF_INET) { |
0d5b6b19 | 980 | ip_buffer->addr_family |= ADDR_FAMILY_IPV4; |
04405784 S |
981 | /* |
982 | * Get subnet info. | |
983 | */ | |
984 | error = kvp_process_ip_address( | |
985 | curp->ifa_netmask, | |
986 | AF_INET, | |
987 | (char *) | |
988 | ip_buffer->sub_net, | |
989 | length, | |
990 | &sn_offset); | |
991 | if (error) | |
992 | goto gather_ipaddr; | |
993 | } else { | |
0d5b6b19 | 994 | ip_buffer->addr_family |= ADDR_FAMILY_IPV6; |
6a60a6a8 | 995 | |
04405784 | 996 | /* |
6a60a6a8 | 997 | * Get subnet info in CIDR format. |
04405784 | 998 | */ |
6a60a6a8 S |
999 | weight = 0; |
1000 | sn_str = (char *)ip_buffer->sub_net; | |
1001 | addr6 = (struct sockaddr_in6 *) | |
1002 | curp->ifa_netmask; | |
1003 | w = addr6->sin6_addr.s6_addr32; | |
1004 | ||
1005 | for (i = 0; i < 4; i++) | |
1006 | weight += hweight32(&w[i]); | |
1007 | ||
1008 | sprintf(cidr_mask, "/%d", weight); | |
1009 | if ((length - sn_offset) < | |
1010 | (strlen(cidr_mask) + 1)) | |
04405784 | 1011 | goto gather_ipaddr; |
6a60a6a8 S |
1012 | |
1013 | if (sn_offset == 0) | |
1014 | strcpy(sn_str, cidr_mask); | |
1015 | else | |
1016 | strcat(sn_str, cidr_mask); | |
1017 | strcat((char *)ip_buffer->sub_net, ";"); | |
1018 | sn_offset += strlen(sn_str) + 1; | |
04405784 | 1019 | } |
4a52c4af S |
1020 | |
1021 | /* | |
1022 | * Collect other ip related configuration info. | |
1023 | */ | |
1024 | ||
1025 | kvp_get_ipconfig_info(if_name, ip_buffer); | |
0d5b6b19 S |
1026 | } |
1027 | ||
04405784 | 1028 | gather_ipaddr: |
af733015 S |
1029 | error = kvp_process_ip_address(curp->ifa_addr, |
1030 | curp->ifa_addr->sa_family, | |
1031 | buffer, | |
1032 | length, &offset); | |
1033 | if (error) | |
1034 | goto getaddr_done; | |
0ecaa198 | 1035 | |
cc04acf5 KS |
1036 | curp = curp->ifa_next; |
1037 | } | |
1038 | ||
1039 | getaddr_done: | |
1040 | freeifaddrs(ifap); | |
1041 | return error; | |
1042 | } | |
1043 | ||
1044 | ||
32061b4d S |
1045 | static int expand_ipv6(char *addr, int type) |
1046 | { | |
1047 | int ret; | |
1048 | struct in6_addr v6_addr; | |
1049 | ||
1050 | ret = inet_pton(AF_INET6, addr, &v6_addr); | |
1051 | ||
1052 | if (ret != 1) { | |
1053 | if (type == NETMASK) | |
1054 | return 1; | |
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" | |
1059 | "%02x%02x:%02x%02x:%02x%02x", | |
1060 | (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], | |
1061 | (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], | |
1062 | (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], | |
1063 | (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], | |
1064 | (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], | |
1065 | (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], | |
1066 | (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], | |
1067 | (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); | |
1068 | ||
1069 | return 1; | |
1070 | ||
1071 | } | |
1072 | ||
1073 | static int is_ipv4(char *addr) | |
1074 | { | |
1075 | int ret; | |
1076 | struct in_addr ipv4_addr; | |
1077 | ||
1078 | ret = inet_pton(AF_INET, addr, &ipv4_addr); | |
1079 | ||
1080 | if (ret == 1) | |
1081 | return 1; | |
1082 | return 0; | |
1083 | } | |
1084 | ||
1085 | static int parse_ip_val_buffer(char *in_buf, int *offset, | |
1086 | char *out_buf, int out_len) | |
1087 | { | |
1088 | char *x; | |
1089 | char *start; | |
1090 | ||
1091 | /* | |
1092 | * in_buf has sequence of characters that are seperated by | |
1093 | * the character ';'. The last sequence does not have the | |
1094 | * terminating ";" character. | |
1095 | */ | |
1096 | start = in_buf + *offset; | |
1097 | ||
1098 | x = strchr(start, ';'); | |
1099 | if (x) | |
1100 | *x = 0; | |
1101 | else | |
1102 | x = start + strlen(start); | |
1103 | ||
1104 | if (strlen(start) != 0) { | |
1105 | int i = 0; | |
1106 | /* | |
1107 | * Get rid of leading spaces. | |
1108 | */ | |
1109 | while (start[i] == ' ') | |
1110 | i++; | |
1111 | ||
1112 | if ((x - start) <= out_len) { | |
1113 | strcpy(out_buf, (start + i)); | |
1114 | *offset += (x - start) + 1; | |
1115 | return 1; | |
1116 | } | |
1117 | } | |
1118 | return 0; | |
1119 | } | |
1120 | ||
1121 | static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) | |
1122 | { | |
1123 | int ret; | |
1124 | ||
1125 | ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); | |
1126 | ||
1127 | if (ret < 0) | |
1128 | return HV_E_FAIL; | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | ||
1134 | static int process_ip_string(FILE *f, char *ip_string, int type) | |
1135 | { | |
1136 | int error = 0; | |
1137 | char addr[INET6_ADDRSTRLEN]; | |
1138 | int i = 0; | |
1139 | int j = 0; | |
1140 | char str[256]; | |
1141 | char sub_str[10]; | |
1142 | int offset = 0; | |
1143 | ||
1144 | memset(addr, 0, sizeof(addr)); | |
1145 | ||
1146 | while (parse_ip_val_buffer(ip_string, &offset, addr, | |
1147 | (MAX_IP_ADDR_SIZE * 2))) { | |
1148 | ||
1149 | sub_str[0] = 0; | |
1150 | if (is_ipv4(addr)) { | |
1151 | switch (type) { | |
1152 | case IPADDR: | |
1153 | snprintf(str, sizeof(str), "%s", "IPADDR"); | |
1154 | break; | |
1155 | case NETMASK: | |
1156 | snprintf(str, sizeof(str), "%s", "NETMASK"); | |
1157 | break; | |
1158 | case GATEWAY: | |
1159 | snprintf(str, sizeof(str), "%s", "GATEWAY"); | |
1160 | break; | |
1161 | case DNS: | |
1162 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1163 | break; | |
1164 | } | |
1165 | if (i != 0) { | |
1166 | if (type != DNS) { | |
1167 | snprintf(sub_str, sizeof(sub_str), | |
1168 | "_%d", i++); | |
1169 | } else { | |
1170 | snprintf(sub_str, sizeof(sub_str), | |
1171 | "%d", ++i); | |
1172 | } | |
1173 | } else if (type == DNS) { | |
1174 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); | |
1175 | } | |
1176 | ||
1177 | ||
1178 | } else if (expand_ipv6(addr, type)) { | |
1179 | switch (type) { | |
1180 | case IPADDR: | |
1181 | snprintf(str, sizeof(str), "%s", "IPV6ADDR"); | |
1182 | break; | |
1183 | case NETMASK: | |
1184 | snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); | |
1185 | break; | |
1186 | case GATEWAY: | |
1187 | snprintf(str, sizeof(str), "%s", | |
1188 | "IPV6_DEFAULTGW"); | |
1189 | break; | |
1190 | case DNS: | |
1191 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1192 | break; | |
1193 | } | |
1194 | if ((j != 0) || (type == DNS)) { | |
1195 | if (type != DNS) { | |
1196 | snprintf(sub_str, sizeof(sub_str), | |
1197 | "_%d", j++); | |
1198 | } else { | |
1199 | snprintf(sub_str, sizeof(sub_str), | |
1200 | "%d", ++i); | |
1201 | } | |
1202 | } else if (type == DNS) { | |
1203 | snprintf(sub_str, sizeof(sub_str), | |
1204 | "%d", ++i); | |
1205 | } | |
1206 | } else { | |
1207 | return HV_INVALIDARG; | |
1208 | } | |
1209 | ||
1210 | error = kvp_write_file(f, str, sub_str, addr); | |
1211 | if (error) | |
1212 | return error; | |
1213 | memset(addr, 0, sizeof(addr)); | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) | |
1220 | { | |
1221 | int error = 0; | |
1222 | char if_file[128]; | |
1223 | FILE *file; | |
1224 | char cmd[512]; | |
1225 | char *mac_addr; | |
1226 | ||
1227 | /* | |
1228 | * Set the configuration for the specified interface with | |
1229 | * the information provided. Since there is no standard | |
1230 | * way to configure an interface, we will have an external | |
1231 | * script that does the job of configuring the interface and | |
1232 | * flushing the configuration. | |
1233 | * | |
1234 | * The parameters passed to this external script are: | |
1235 | * 1. A configuration file that has the specified configuration. | |
1236 | * | |
1237 | * We will embed the name of the interface in the configuration | |
1238 | * file: ifcfg-ethx (where ethx is the interface name). | |
1239 | * | |
1240 | * The information provided here may be more than what is needed | |
1241 | * in a given distro to configure the interface and so are free | |
1242 | * ignore information that may not be relevant. | |
1243 | * | |
1244 | * Here is the format of the ip configuration file: | |
1245 | * | |
1246 | * HWADDR=macaddr | |
1247 | * IF_NAME=interface name | |
1248 | * DHCP=yes (This is optional; if yes, DHCP is configured) | |
1249 | * | |
1250 | * IPADDR=ipaddr1 | |
1251 | * IPADDR_1=ipaddr2 | |
1252 | * IPADDR_x=ipaddry (where y = x + 1) | |
1253 | * | |
1254 | * NETMASK=netmask1 | |
1255 | * NETMASK_x=netmasky (where y = x + 1) | |
1256 | * | |
1257 | * GATEWAY=ipaddr1 | |
1258 | * GATEWAY_x=ipaddry (where y = x + 1) | |
1259 | * | |
1260 | * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) | |
1261 | * | |
1262 | * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be | |
1263 | * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as | |
1264 | * IPV6NETMASK. | |
1265 | * | |
1266 | * The host can specify multiple ipv4 and ipv6 addresses to be | |
1267 | * configured for the interface. Furthermore, the configuration | |
1268 | * needs to be persistent. A subsequent GET call on the interface | |
1269 | * is expected to return the configuration that is set via the SET | |
1270 | * call. | |
1271 | */ | |
1272 | ||
1273 | snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, | |
40424f5f | 1274 | "/ifcfg-", if_name); |
32061b4d S |
1275 | |
1276 | file = fopen(if_file, "w"); | |
1277 | ||
1278 | if (file == NULL) { | |
1279 | syslog(LOG_ERR, "Failed to open config file"); | |
1280 | return HV_E_FAIL; | |
1281 | } | |
1282 | ||
1283 | /* | |
1284 | * First write out the MAC address. | |
1285 | */ | |
1286 | ||
1287 | mac_addr = kvp_if_name_to_mac(if_name); | |
1288 | if (mac_addr == NULL) { | |
1289 | error = HV_E_FAIL; | |
1290 | goto setval_error; | |
1291 | } | |
1292 | ||
1293 | error = kvp_write_file(file, "HWADDR", "", mac_addr); | |
1294 | if (error) | |
1295 | goto setval_error; | |
1296 | ||
1297 | error = kvp_write_file(file, "IF_NAME", "", if_name); | |
1298 | if (error) | |
1299 | goto setval_error; | |
1300 | ||
1301 | if (new_val->dhcp_enabled) { | |
1302 | error = kvp_write_file(file, "DHCP", "", "yes"); | |
1303 | if (error) | |
1304 | goto setval_error; | |
1305 | ||
1306 | /* | |
1307 | * We are done!. | |
1308 | */ | |
1309 | goto setval_done; | |
1310 | } | |
1311 | ||
1312 | /* | |
1313 | * Write the configuration for ipaddress, netmask, gateway and | |
1314 | * name servers. | |
1315 | */ | |
1316 | ||
1317 | error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); | |
1318 | if (error) | |
1319 | goto setval_error; | |
1320 | ||
1321 | error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); | |
1322 | if (error) | |
1323 | goto setval_error; | |
1324 | ||
1325 | error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); | |
1326 | if (error) | |
1327 | goto setval_error; | |
1328 | ||
1329 | error = process_ip_string(file, (char *)new_val->dns_addr, DNS); | |
1330 | if (error) | |
1331 | goto setval_error; | |
1332 | ||
1333 | setval_done: | |
1334 | free(mac_addr); | |
1335 | fclose(file); | |
1336 | ||
1337 | /* | |
1338 | * Now that we have populated the configuration file, | |
1339 | * invoke the external script to do its magic. | |
1340 | */ | |
1341 | ||
1342 | snprintf(cmd, sizeof(cmd), "%s %s", "hv_set_ifconfig", if_file); | |
1343 | system(cmd); | |
1344 | return 0; | |
1345 | ||
1346 | setval_error: | |
1347 | syslog(LOG_ERR, "Failed to write config file"); | |
1348 | free(mac_addr); | |
1349 | fclose(file); | |
1350 | return error; | |
1351 | } | |
1352 | ||
1353 | ||
cc04acf5 KS |
1354 | static int |
1355 | kvp_get_domain_name(char *buffer, int length) | |
1356 | { | |
1357 | struct addrinfo hints, *info ; | |
cc04acf5 KS |
1358 | int error = 0; |
1359 | ||
5be528c2 | 1360 | gethostname(buffer, length); |
cc04acf5 KS |
1361 | memset(&hints, 0, sizeof(hints)); |
1362 | hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ | |
1363 | hints.ai_socktype = SOCK_STREAM; | |
1364 | hints.ai_flags = AI_CANONNAME; | |
1365 | ||
5be528c2 | 1366 | error = getaddrinfo(buffer, NULL, &hints, &info); |
cc04acf5 KS |
1367 | if (error != 0) { |
1368 | strcpy(buffer, "getaddrinfo failed\n"); | |
5be528c2 | 1369 | return error; |
cc04acf5 KS |
1370 | } |
1371 | strcpy(buffer, info->ai_canonname); | |
cc04acf5 KS |
1372 | freeaddrinfo(info); |
1373 | return error; | |
1374 | } | |
1375 | ||
1376 | static int | |
1377 | netlink_send(int fd, struct cn_msg *msg) | |
1378 | { | |
1379 | struct nlmsghdr *nlh; | |
1380 | unsigned int size; | |
1381 | struct msghdr message; | |
1382 | char buffer[64]; | |
1383 | struct iovec iov[2]; | |
1384 | ||
1385 | size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len); | |
1386 | ||
1387 | nlh = (struct nlmsghdr *)buffer; | |
1388 | nlh->nlmsg_seq = 0; | |
1389 | nlh->nlmsg_pid = getpid(); | |
1390 | nlh->nlmsg_type = NLMSG_DONE; | |
1391 | nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh)); | |
1392 | nlh->nlmsg_flags = 0; | |
1393 | ||
1394 | iov[0].iov_base = nlh; | |
1395 | iov[0].iov_len = sizeof(*nlh); | |
1396 | ||
1397 | iov[1].iov_base = msg; | |
1398 | iov[1].iov_len = size; | |
1399 | ||
1400 | memset(&message, 0, sizeof(message)); | |
1401 | message.msg_name = &addr; | |
1402 | message.msg_namelen = sizeof(addr); | |
1403 | message.msg_iov = iov; | |
1404 | message.msg_iovlen = 2; | |
1405 | ||
1406 | return sendmsg(fd, &message, 0); | |
1407 | } | |
1408 | ||
7989f7d5 | 1409 | int main(void) |
cc04acf5 KS |
1410 | { |
1411 | int fd, len, sock_opt; | |
1412 | int error; | |
1413 | struct cn_msg *message; | |
1414 | struct pollfd pfd; | |
1415 | struct nlmsghdr *incoming_msg; | |
1416 | struct cn_msg *incoming_cn_msg; | |
26403354 | 1417 | struct hv_kvp_msg *hv_msg; |
7989f7d5 | 1418 | char *p; |
cc04acf5 KS |
1419 | char *key_value; |
1420 | char *key_name; | |
b47a81dc S |
1421 | int op; |
1422 | int pool; | |
32061b4d S |
1423 | char *if_name; |
1424 | struct hv_kvp_ipaddr_value *kvp_ip_val; | |
cc04acf5 KS |
1425 | |
1426 | daemon(1, 0); | |
1427 | openlog("KVP", 0, LOG_USER); | |
1428 | syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); | |
1429 | /* | |
1430 | * Retrieve OS release information. | |
1431 | */ | |
1432 | kvp_get_os_info(); | |
1433 | ||
db425334 S |
1434 | if (kvp_file_init()) { |
1435 | syslog(LOG_ERR, "Failed to initialize the pools"); | |
6bb22fea | 1436 | exit(EXIT_FAILURE); |
db425334 S |
1437 | } |
1438 | ||
cc04acf5 KS |
1439 | fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); |
1440 | if (fd < 0) { | |
1441 | syslog(LOG_ERR, "netlink socket creation failed; error:%d", fd); | |
6bb22fea | 1442 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1443 | } |
1444 | addr.nl_family = AF_NETLINK; | |
1445 | addr.nl_pad = 0; | |
1446 | addr.nl_pid = 0; | |
1447 | addr.nl_groups = CN_KVP_IDX; | |
1448 | ||
1449 | ||
1450 | error = bind(fd, (struct sockaddr *)&addr, sizeof(addr)); | |
1451 | if (error < 0) { | |
1452 | syslog(LOG_ERR, "bind failed; error:%d", error); | |
1453 | close(fd); | |
6bb22fea | 1454 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1455 | } |
1456 | sock_opt = addr.nl_groups; | |
1457 | setsockopt(fd, 270, 1, &sock_opt, sizeof(sock_opt)); | |
1458 | /* | |
1459 | * Register ourselves with the kernel. | |
1460 | */ | |
1461 | message = (struct cn_msg *)kvp_send_buffer; | |
1462 | message->id.idx = CN_KVP_IDX; | |
1463 | message->id.val = CN_KVP_VAL; | |
26403354 S |
1464 | |
1465 | hv_msg = (struct hv_kvp_msg *)message->data; | |
b47a81dc | 1466 | hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; |
cc04acf5 | 1467 | message->ack = 0; |
26403354 | 1468 | message->len = sizeof(struct hv_kvp_msg); |
cc04acf5 KS |
1469 | |
1470 | len = netlink_send(fd, message); | |
1471 | if (len < 0) { | |
1472 | syslog(LOG_ERR, "netlink_send failed; error:%d", len); | |
1473 | close(fd); | |
6bb22fea | 1474 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1475 | } |
1476 | ||
1477 | pfd.fd = fd; | |
1478 | ||
1479 | while (1) { | |
bcc2c9c3 OH |
1480 | struct sockaddr *addr_p = (struct sockaddr *) &addr; |
1481 | socklen_t addr_l = sizeof(addr); | |
cc04acf5 KS |
1482 | pfd.events = POLLIN; |
1483 | pfd.revents = 0; | |
1484 | poll(&pfd, 1, -1); | |
1485 | ||
bcc2c9c3 OH |
1486 | len = recvfrom(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0, |
1487 | addr_p, &addr_l); | |
cc04acf5 | 1488 | |
95a69ada | 1489 | if (len < 0) { |
bcc2c9c3 OH |
1490 | syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s", |
1491 | addr.nl_pid, errno, strerror(errno)); | |
cc04acf5 KS |
1492 | close(fd); |
1493 | return -1; | |
1494 | } | |
1495 | ||
95a69ada TH |
1496 | if (addr.nl_pid) { |
1497 | syslog(LOG_WARNING, "Received packet from untrusted pid:%u", | |
1498 | addr.nl_pid); | |
1499 | continue; | |
1500 | } | |
1501 | ||
cc04acf5 KS |
1502 | incoming_msg = (struct nlmsghdr *)kvp_recv_buffer; |
1503 | incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg); | |
26403354 | 1504 | hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; |
cc04acf5 | 1505 | |
b47a81dc S |
1506 | /* |
1507 | * We will use the KVP header information to pass back | |
1508 | * the error from this daemon. So, first copy the state | |
1509 | * and set the error code to success. | |
1510 | */ | |
1511 | op = hv_msg->kvp_hdr.operation; | |
1512 | pool = hv_msg->kvp_hdr.pool; | |
1513 | hv_msg->error = HV_S_OK; | |
1514 | ||
1515 | if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { | |
cc04acf5 KS |
1516 | /* |
1517 | * Driver is registering with us; stash away the version | |
1518 | * information. | |
1519 | */ | |
b47a81dc | 1520 | in_hand_shake = 0; |
e485ceac | 1521 | p = (char *)hv_msg->body.kvp_register.version; |
7989f7d5 | 1522 | lic_version = malloc(strlen(p) + 1); |
cc04acf5 | 1523 | if (lic_version) { |
7989f7d5 | 1524 | strcpy(lic_version, p); |
cc04acf5 KS |
1525 | syslog(LOG_INFO, "KVP LIC Version: %s", |
1526 | lic_version); | |
1527 | } else { | |
1528 | syslog(LOG_ERR, "malloc failed"); | |
1529 | } | |
1530 | continue; | |
b47a81dc | 1531 | } |
cc04acf5 | 1532 | |
b47a81dc | 1533 | switch (op) { |
16e87100 S |
1534 | case KVP_OP_GET_IP_INFO: |
1535 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1536 | if_name = | |
1537 | kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); | |
1538 | ||
1539 | if (if_name == NULL) { | |
1540 | /* | |
1541 | * We could not map the mac address to an | |
1542 | * interface name; return error. | |
1543 | */ | |
1544 | hv_msg->error = HV_E_FAIL; | |
1545 | break; | |
1546 | } | |
1547 | error = kvp_get_ip_info( | |
1548 | 0, if_name, KVP_OP_GET_IP_INFO, | |
1549 | kvp_ip_val, | |
1550 | (MAX_IP_ADDR_SIZE * 2)); | |
1551 | ||
1552 | if (error) | |
1553 | hv_msg->error = error; | |
1554 | ||
1555 | free(if_name); | |
1556 | break; | |
1557 | ||
32061b4d S |
1558 | case KVP_OP_SET_IP_INFO: |
1559 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1560 | if_name = kvp_get_if_name( | |
1561 | (char *)kvp_ip_val->adapter_id); | |
1562 | if (if_name == NULL) { | |
1563 | /* | |
1564 | * We could not map the guid to an | |
1565 | * interface name; return error. | |
1566 | */ | |
1567 | hv_msg->error = HV_GUID_NOTFOUND; | |
1568 | break; | |
1569 | } | |
1570 | error = kvp_set_ip_info(if_name, kvp_ip_val); | |
1571 | if (error) | |
1572 | hv_msg->error = error; | |
1573 | ||
1574 | free(if_name); | |
1575 | break; | |
1576 | ||
fa3d5b85 | 1577 | case KVP_OP_SET: |
b47a81dc | 1578 | if (kvp_key_add_or_modify(pool, |
db425334 S |
1579 | hv_msg->body.kvp_set.data.key, |
1580 | hv_msg->body.kvp_set.data.key_size, | |
1581 | hv_msg->body.kvp_set.data.value, | |
1582 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1583 | hv_msg->error = HV_S_CONT; |
db425334 S |
1584 | break; |
1585 | ||
fa3d5b85 | 1586 | case KVP_OP_GET: |
b47a81dc | 1587 | if (kvp_get_value(pool, |
db425334 S |
1588 | hv_msg->body.kvp_set.data.key, |
1589 | hv_msg->body.kvp_set.data.key_size, | |
1590 | hv_msg->body.kvp_set.data.value, | |
1591 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1592 | hv_msg->error = HV_S_CONT; |
db425334 S |
1593 | break; |
1594 | ||
fa3d5b85 | 1595 | case KVP_OP_DELETE: |
b47a81dc | 1596 | if (kvp_key_delete(pool, |
db425334 S |
1597 | hv_msg->body.kvp_delete.key, |
1598 | hv_msg->body.kvp_delete.key_size)) | |
b47a81dc | 1599 | hv_msg->error = HV_S_CONT; |
db425334 S |
1600 | break; |
1601 | ||
cc04acf5 | 1602 | default: |
26403354 | 1603 | break; |
cc04acf5 KS |
1604 | } |
1605 | ||
b47a81dc | 1606 | if (op != KVP_OP_ENUMERATE) |
fa3d5b85 S |
1607 | goto kvp_done; |
1608 | ||
adc80ae6 S |
1609 | /* |
1610 | * If the pool is KVP_POOL_AUTO, dynamically generate | |
1611 | * both the key and the value; if not read from the | |
1612 | * appropriate pool. | |
1613 | */ | |
b47a81dc S |
1614 | if (pool != KVP_POOL_AUTO) { |
1615 | if (kvp_pool_enumerate(pool, | |
adc80ae6 S |
1616 | hv_msg->body.kvp_enum_data.index, |
1617 | hv_msg->body.kvp_enum_data.data.key, | |
1618 | HV_KVP_EXCHANGE_MAX_KEY_SIZE, | |
1619 | hv_msg->body.kvp_enum_data.data.value, | |
b47a81dc S |
1620 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
1621 | hv_msg->error = HV_S_CONT; | |
adc80ae6 S |
1622 | goto kvp_done; |
1623 | } | |
1624 | ||
26403354 S |
1625 | hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; |
1626 | key_name = (char *)hv_msg->body.kvp_enum_data.data.key; | |
1627 | key_value = (char *)hv_msg->body.kvp_enum_data.data.value; | |
cc04acf5 | 1628 | |
26403354 | 1629 | switch (hv_msg->body.kvp_enum_data.index) { |
cc04acf5 KS |
1630 | case FullyQualifiedDomainName: |
1631 | kvp_get_domain_name(key_value, | |
1632 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE); | |
1633 | strcpy(key_name, "FullyQualifiedDomainName"); | |
1634 | break; | |
1635 | case IntegrationServicesVersion: | |
1636 | strcpy(key_name, "IntegrationServicesVersion"); | |
1637 | strcpy(key_value, lic_version); | |
1638 | break; | |
1639 | case NetworkAddressIPv4: | |
4a3b97e5 | 1640 | kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1641 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1642 | strcpy(key_name, "NetworkAddressIPv4"); |
1643 | break; | |
1644 | case NetworkAddressIPv6: | |
4a3b97e5 | 1645 | kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1646 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1647 | strcpy(key_name, "NetworkAddressIPv6"); |
1648 | break; | |
1649 | case OSBuildNumber: | |
1650 | strcpy(key_value, os_build); | |
1651 | strcpy(key_name, "OSBuildNumber"); | |
1652 | break; | |
1653 | case OSName: | |
1654 | strcpy(key_value, os_name); | |
1655 | strcpy(key_name, "OSName"); | |
1656 | break; | |
1657 | case OSMajorVersion: | |
1658 | strcpy(key_value, os_major); | |
1659 | strcpy(key_name, "OSMajorVersion"); | |
1660 | break; | |
1661 | case OSMinorVersion: | |
1662 | strcpy(key_value, os_minor); | |
1663 | strcpy(key_name, "OSMinorVersion"); | |
1664 | break; | |
1665 | case OSVersion: | |
f426a36c | 1666 | strcpy(key_value, os_version); |
cc04acf5 KS |
1667 | strcpy(key_name, "OSVersion"); |
1668 | break; | |
1669 | case ProcessorArchitecture: | |
1670 | strcpy(key_value, processor_arch); | |
1671 | strcpy(key_name, "ProcessorArchitecture"); | |
1672 | break; | |
1673 | default: | |
b47a81dc | 1674 | hv_msg->error = HV_S_CONT; |
cc04acf5 KS |
1675 | break; |
1676 | } | |
1677 | /* | |
1678 | * Send the value back to the kernel. The response is | |
1679 | * already in the receive buffer. Update the cn_msg header to | |
1680 | * reflect the key value that has been added to the message | |
1681 | */ | |
fa3d5b85 | 1682 | kvp_done: |
cc04acf5 KS |
1683 | |
1684 | incoming_cn_msg->id.idx = CN_KVP_IDX; | |
1685 | incoming_cn_msg->id.val = CN_KVP_VAL; | |
cc04acf5 | 1686 | incoming_cn_msg->ack = 0; |
26403354 | 1687 | incoming_cn_msg->len = sizeof(struct hv_kvp_msg); |
cc04acf5 KS |
1688 | |
1689 | len = netlink_send(fd, incoming_cn_msg); | |
1690 | if (len < 0) { | |
1691 | syslog(LOG_ERR, "net_link send failed; error:%d", len); | |
6bb22fea | 1692 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1693 | } |
1694 | } | |
1695 | ||
1696 | } |