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 | ||
f4685fa6 TH |
105 | #ifndef SOL_NETLINK |
106 | #define SOL_NETLINK 270 | |
107 | #endif | |
108 | ||
db425334 | 109 | struct kvp_record { |
d0cbc156 S |
110 | char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
111 | char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; | |
db425334 S |
112 | }; |
113 | ||
114 | struct kvp_file_state { | |
115 | int fd; | |
116 | int num_blocks; | |
117 | struct kvp_record *records; | |
118 | int num_records; | |
d0cbc156 | 119 | char fname[MAX_FILE_NAME]; |
db425334 S |
120 | }; |
121 | ||
122 | static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; | |
123 | ||
124 | static void kvp_acquire_lock(int pool) | |
125 | { | |
126 | struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0}; | |
127 | fl.l_pid = getpid(); | |
128 | ||
129 | if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { | |
12e50c30 TH |
130 | syslog(LOG_ERR, "Failed to acquire the lock pool: %d; error: %d %s", pool, |
131 | errno, strerror(errno)); | |
6bb22fea | 132 | exit(EXIT_FAILURE); |
db425334 S |
133 | } |
134 | } | |
135 | ||
136 | static void kvp_release_lock(int pool) | |
137 | { | |
138 | struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0}; | |
139 | fl.l_pid = getpid(); | |
140 | ||
141 | if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { | |
12e50c30 TH |
142 | syslog(LOG_ERR, "Failed to release the lock pool: %d; error: %d %s", pool, |
143 | errno, strerror(errno)); | |
6bb22fea | 144 | exit(EXIT_FAILURE); |
db425334 S |
145 | } |
146 | } | |
147 | ||
148 | static void kvp_update_file(int pool) | |
149 | { | |
150 | FILE *filep; | |
151 | size_t bytes_written; | |
152 | ||
153 | /* | |
154 | * We are going to write our in-memory registry out to | |
155 | * disk; acquire the lock first. | |
156 | */ | |
157 | kvp_acquire_lock(pool); | |
158 | ||
8467fdbb | 159 | filep = fopen(kvp_file_info[pool].fname, "we"); |
db425334 | 160 | if (!filep) { |
12e50c30 TH |
161 | syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, |
162 | errno, strerror(errno)); | |
db425334 | 163 | kvp_release_lock(pool); |
6bb22fea | 164 | exit(EXIT_FAILURE); |
db425334 S |
165 | } |
166 | ||
167 | bytes_written = fwrite(kvp_file_info[pool].records, | |
168 | sizeof(struct kvp_record), | |
169 | kvp_file_info[pool].num_records, filep); | |
170 | ||
436473bc BH |
171 | if (ferror(filep) || fclose(filep)) { |
172 | kvp_release_lock(pool); | |
173 | syslog(LOG_ERR, "Failed to write file, pool: %d", pool); | |
174 | exit(EXIT_FAILURE); | |
175 | } | |
176 | ||
db425334 S |
177 | kvp_release_lock(pool); |
178 | } | |
179 | ||
adc80ae6 S |
180 | static void kvp_update_mem_state(int pool) |
181 | { | |
182 | FILE *filep; | |
183 | size_t records_read = 0; | |
184 | struct kvp_record *record = kvp_file_info[pool].records; | |
185 | struct kvp_record *readp; | |
186 | int num_blocks = kvp_file_info[pool].num_blocks; | |
187 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
188 | ||
189 | kvp_acquire_lock(pool); | |
190 | ||
8467fdbb | 191 | filep = fopen(kvp_file_info[pool].fname, "re"); |
adc80ae6 | 192 | if (!filep) { |
12e50c30 TH |
193 | syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, |
194 | errno, strerror(errno)); | |
adc80ae6 | 195 | kvp_release_lock(pool); |
6bb22fea | 196 | exit(EXIT_FAILURE); |
adc80ae6 | 197 | } |
436473bc | 198 | for (;;) { |
adc80ae6 S |
199 | readp = &record[records_read]; |
200 | records_read += fread(readp, sizeof(struct kvp_record), | |
201 | ENTRIES_PER_BLOCK * num_blocks, | |
202 | filep); | |
203 | ||
436473bc BH |
204 | if (ferror(filep)) { |
205 | syslog(LOG_ERR, "Failed to read file, pool: %d", pool); | |
206 | exit(EXIT_FAILURE); | |
207 | } | |
208 | ||
adc80ae6 S |
209 | if (!feof(filep)) { |
210 | /* | |
211 | * We have more data to read. | |
212 | */ | |
213 | num_blocks++; | |
214 | record = realloc(record, alloc_unit * num_blocks); | |
215 | ||
216 | if (record == NULL) { | |
217 | syslog(LOG_ERR, "malloc failed"); | |
6bb22fea | 218 | exit(EXIT_FAILURE); |
adc80ae6 S |
219 | } |
220 | continue; | |
221 | } | |
222 | break; | |
223 | } | |
224 | ||
225 | kvp_file_info[pool].num_blocks = num_blocks; | |
226 | kvp_file_info[pool].records = record; | |
227 | kvp_file_info[pool].num_records = records_read; | |
228 | ||
d5ab4827 | 229 | fclose(filep); |
adc80ae6 S |
230 | kvp_release_lock(pool); |
231 | } | |
db425334 S |
232 | static int kvp_file_init(void) |
233 | { | |
00b83355 | 234 | int fd; |
db425334 S |
235 | FILE *filep; |
236 | size_t records_read; | |
d0cbc156 | 237 | char *fname; |
db425334 S |
238 | struct kvp_record *record; |
239 | struct kvp_record *readp; | |
240 | int num_blocks; | |
241 | int i; | |
242 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
243 | ||
40424f5f | 244 | if (access(KVP_CONFIG_LOC, F_OK)) { |
0bffd25c | 245 | if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) { |
12e50c30 TH |
246 | syslog(LOG_ERR, "Failed to create '%s'; error: %d %s", KVP_CONFIG_LOC, |
247 | errno, strerror(errno)); | |
6bb22fea | 248 | exit(EXIT_FAILURE); |
db425334 S |
249 | } |
250 | } | |
251 | ||
252 | for (i = 0; i < KVP_POOL_COUNT; i++) { | |
253 | fname = kvp_file_info[i].fname; | |
254 | records_read = 0; | |
255 | num_blocks = 1; | |
40424f5f | 256 | sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); |
8467fdbb | 257 | fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */); |
db425334 S |
258 | |
259 | if (fd == -1) | |
260 | return 1; | |
261 | ||
262 | ||
8467fdbb | 263 | filep = fopen(fname, "re"); |
fca59755 TH |
264 | if (!filep) { |
265 | close(fd); | |
db425334 | 266 | return 1; |
fca59755 | 267 | } |
db425334 S |
268 | |
269 | record = malloc(alloc_unit * num_blocks); | |
270 | if (record == NULL) { | |
271 | fclose(filep); | |
fca59755 | 272 | close(fd); |
db425334 S |
273 | return 1; |
274 | } | |
436473bc | 275 | for (;;) { |
db425334 S |
276 | readp = &record[records_read]; |
277 | records_read += fread(readp, sizeof(struct kvp_record), | |
278 | ENTRIES_PER_BLOCK, | |
279 | filep); | |
280 | ||
436473bc BH |
281 | if (ferror(filep)) { |
282 | syslog(LOG_ERR, "Failed to read file, pool: %d", | |
283 | i); | |
284 | exit(EXIT_FAILURE); | |
285 | } | |
286 | ||
db425334 S |
287 | if (!feof(filep)) { |
288 | /* | |
289 | * We have more data to read. | |
290 | */ | |
291 | num_blocks++; | |
292 | record = realloc(record, alloc_unit * | |
293 | num_blocks); | |
294 | if (record == NULL) { | |
295 | fclose(filep); | |
fca59755 | 296 | close(fd); |
db425334 S |
297 | return 1; |
298 | } | |
299 | continue; | |
300 | } | |
301 | break; | |
302 | } | |
303 | kvp_file_info[i].fd = fd; | |
304 | kvp_file_info[i].num_blocks = num_blocks; | |
305 | kvp_file_info[i].records = record; | |
306 | kvp_file_info[i].num_records = records_read; | |
307 | fclose(filep); | |
308 | ||
309 | } | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
d892de8d | 314 | static int kvp_key_delete(int pool, const char *key, int key_size) |
db425334 S |
315 | { |
316 | int i; | |
317 | int j, k; | |
adc80ae6 S |
318 | int num_records; |
319 | struct kvp_record *record; | |
320 | ||
321 | /* | |
322 | * First update the in-memory state. | |
323 | */ | |
324 | kvp_update_mem_state(pool); | |
325 | ||
326 | num_records = kvp_file_info[pool].num_records; | |
327 | record = kvp_file_info[pool].records; | |
db425334 S |
328 | |
329 | for (i = 0; i < num_records; i++) { | |
330 | if (memcmp(key, record[i].key, key_size)) | |
331 | continue; | |
332 | /* | |
333 | * Found a match; just move the remaining | |
334 | * entries up. | |
335 | */ | |
336 | if (i == num_records) { | |
337 | kvp_file_info[pool].num_records--; | |
338 | kvp_update_file(pool); | |
339 | return 0; | |
340 | } | |
341 | ||
342 | j = i; | |
343 | k = j + 1; | |
344 | for (; k < num_records; k++) { | |
345 | strcpy(record[j].key, record[k].key); | |
346 | strcpy(record[j].value, record[k].value); | |
347 | j++; | |
348 | } | |
349 | ||
350 | kvp_file_info[pool].num_records--; | |
351 | kvp_update_file(pool); | |
352 | return 0; | |
353 | } | |
354 | return 1; | |
355 | } | |
356 | ||
d892de8d | 357 | static int kvp_key_add_or_modify(int pool, const char *key, int key_size, const char *value, |
db425334 S |
358 | int value_size) |
359 | { | |
360 | int i; | |
adc80ae6 S |
361 | int num_records; |
362 | struct kvp_record *record; | |
363 | int num_blocks; | |
db425334 S |
364 | |
365 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
366 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
367 | return 1; | |
368 | ||
adc80ae6 S |
369 | /* |
370 | * First update the in-memory state. | |
371 | */ | |
372 | kvp_update_mem_state(pool); | |
373 | ||
374 | num_records = kvp_file_info[pool].num_records; | |
375 | record = kvp_file_info[pool].records; | |
376 | num_blocks = kvp_file_info[pool].num_blocks; | |
377 | ||
db425334 S |
378 | for (i = 0; i < num_records; i++) { |
379 | if (memcmp(key, record[i].key, key_size)) | |
380 | continue; | |
381 | /* | |
382 | * Found a match; just update the value - | |
383 | * this is the modify case. | |
384 | */ | |
385 | memcpy(record[i].value, value, value_size); | |
386 | kvp_update_file(pool); | |
387 | return 0; | |
388 | } | |
389 | ||
390 | /* | |
391 | * Need to add a new entry; | |
392 | */ | |
393 | if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { | |
394 | /* Need to allocate a larger array for reg entries. */ | |
395 | record = realloc(record, sizeof(struct kvp_record) * | |
396 | ENTRIES_PER_BLOCK * (num_blocks + 1)); | |
397 | ||
398 | if (record == NULL) | |
399 | return 1; | |
400 | kvp_file_info[pool].num_blocks++; | |
401 | ||
402 | } | |
403 | memcpy(record[i].value, value, value_size); | |
404 | memcpy(record[i].key, key, key_size); | |
405 | kvp_file_info[pool].records = record; | |
406 | kvp_file_info[pool].num_records++; | |
407 | kvp_update_file(pool); | |
408 | return 0; | |
409 | } | |
410 | ||
d892de8d | 411 | static int kvp_get_value(int pool, const char *key, int key_size, char *value, |
db425334 S |
412 | int value_size) |
413 | { | |
414 | int i; | |
adc80ae6 S |
415 | int num_records; |
416 | struct kvp_record *record; | |
db425334 S |
417 | |
418 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
419 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
420 | return 1; | |
421 | ||
adc80ae6 S |
422 | /* |
423 | * First update the in-memory state. | |
424 | */ | |
425 | kvp_update_mem_state(pool); | |
426 | ||
427 | num_records = kvp_file_info[pool].num_records; | |
428 | record = kvp_file_info[pool].records; | |
429 | ||
db425334 S |
430 | for (i = 0; i < num_records; i++) { |
431 | if (memcmp(key, record[i].key, key_size)) | |
432 | continue; | |
433 | /* | |
434 | * Found a match; just copy the value out. | |
435 | */ | |
436 | memcpy(value, record[i].value, value_size); | |
437 | return 0; | |
438 | } | |
439 | ||
440 | return 1; | |
441 | } | |
442 | ||
d892de8d TH |
443 | static int kvp_pool_enumerate(int pool, int index, char *key, int key_size, |
444 | char *value, int value_size) | |
adc80ae6 S |
445 | { |
446 | struct kvp_record *record; | |
447 | ||
448 | /* | |
449 | * First update our in-memory database. | |
450 | */ | |
451 | kvp_update_mem_state(pool); | |
452 | record = kvp_file_info[pool].records; | |
453 | ||
454 | if (index >= kvp_file_info[pool].num_records) { | |
b47a81dc | 455 | return 1; |
adc80ae6 S |
456 | } |
457 | ||
458 | memcpy(key, record[index].key, key_size); | |
459 | memcpy(value, record[index].value, value_size); | |
b47a81dc | 460 | return 0; |
adc80ae6 S |
461 | } |
462 | ||
463 | ||
cc04acf5 KS |
464 | void kvp_get_os_info(void) |
465 | { | |
466 | FILE *file; | |
7989f7d5 | 467 | char *p, buf[512]; |
cc04acf5 | 468 | |
7989f7d5 | 469 | uname(&uts_buf); |
f426a36c S |
470 | os_version = uts_buf.release; |
471 | os_build = strdup(uts_buf.release); | |
472 | ||
44c8b25f | 473 | os_name = uts_buf.sysname; |
064931d0 | 474 | processor_arch = uts_buf.machine; |
cc04acf5 | 475 | |
e54bbc64 S |
476 | /* |
477 | * The current windows host (win7) expects the build | |
478 | * string to be of the form: x.y.z | |
479 | * Strip additional information we may have. | |
480 | */ | |
f426a36c | 481 | p = strchr(os_version, '-'); |
e54bbc64 S |
482 | if (p) |
483 | *p = '\0'; | |
484 | ||
44c8b25f BH |
485 | /* |
486 | * Parse the /etc/os-release file if present: | |
487 | * http://www.freedesktop.org/software/systemd/man/os-release.html | |
488 | */ | |
489 | file = fopen("/etc/os-release", "r"); | |
490 | if (file != NULL) { | |
491 | while (fgets(buf, sizeof(buf), file)) { | |
492 | char *value, *q; | |
493 | ||
494 | /* Ignore comments */ | |
495 | if (buf[0] == '#') | |
496 | continue; | |
497 | ||
498 | /* Split into name=value */ | |
499 | p = strchr(buf, '='); | |
500 | if (!p) | |
501 | continue; | |
502 | *p++ = 0; | |
503 | ||
504 | /* Remove quotes and newline; un-escape */ | |
505 | value = p; | |
506 | q = p; | |
507 | while (*p) { | |
508 | if (*p == '\\') { | |
509 | ++p; | |
510 | if (!*p) | |
511 | break; | |
512 | *q++ = *p++; | |
513 | } else if (*p == '\'' || *p == '"' || | |
514 | *p == '\n') { | |
515 | ++p; | |
516 | } else { | |
517 | *q++ = *p++; | |
518 | } | |
519 | } | |
520 | *q = 0; | |
521 | ||
522 | if (!strcmp(buf, "NAME")) { | |
523 | p = strdup(value); | |
524 | if (!p) | |
525 | break; | |
526 | os_name = p; | |
527 | } else if (!strcmp(buf, "VERSION_ID")) { | |
528 | p = strdup(value); | |
529 | if (!p) | |
530 | break; | |
531 | os_major = p; | |
532 | } | |
533 | } | |
534 | fclose(file); | |
535 | return; | |
536 | } | |
537 | ||
538 | /* Fallback for older RH/SUSE releases */ | |
cc04acf5 KS |
539 | file = fopen("/etc/SuSE-release", "r"); |
540 | if (file != NULL) | |
541 | goto kvp_osinfo_found; | |
542 | file = fopen("/etc/redhat-release", "r"); | |
543 | if (file != NULL) | |
544 | goto kvp_osinfo_found; | |
cc04acf5 KS |
545 | |
546 | /* | |
547 | * We don't have information about the os. | |
548 | */ | |
cc04acf5 KS |
549 | return; |
550 | ||
551 | kvp_osinfo_found: | |
7989f7d5 OH |
552 | /* up to three lines */ |
553 | p = fgets(buf, sizeof(buf), file); | |
554 | if (p) { | |
555 | p = strchr(buf, '\n'); | |
556 | if (p) | |
557 | *p = '\0'; | |
558 | p = strdup(buf); | |
559 | if (!p) | |
560 | goto done; | |
561 | os_name = p; | |
562 | ||
563 | /* second line */ | |
564 | p = fgets(buf, sizeof(buf), file); | |
565 | if (p) { | |
566 | p = strchr(buf, '\n'); | |
567 | if (p) | |
568 | *p = '\0'; | |
569 | p = strdup(buf); | |
570 | if (!p) | |
571 | goto done; | |
572 | os_major = p; | |
573 | ||
574 | /* third line */ | |
575 | p = fgets(buf, sizeof(buf), file); | |
576 | if (p) { | |
577 | p = strchr(buf, '\n'); | |
578 | if (p) | |
579 | *p = '\0'; | |
580 | p = strdup(buf); | |
581 | if (p) | |
582 | os_minor = p; | |
583 | } | |
584 | } | |
585 | } | |
586 | ||
587 | done: | |
cc04acf5 KS |
588 | fclose(file); |
589 | return; | |
590 | } | |
591 | ||
32061b4d S |
592 | |
593 | ||
594 | /* | |
595 | * Retrieve an interface name corresponding to the specified guid. | |
596 | * If there is a match, the function returns a pointer | |
597 | * to the interface name and if not, a NULL is returned. | |
598 | * If a match is found, the caller is responsible for | |
599 | * freeing the memory. | |
600 | */ | |
601 | ||
602 | static char *kvp_get_if_name(char *guid) | |
603 | { | |
604 | DIR *dir; | |
605 | struct dirent *entry; | |
606 | FILE *file; | |
607 | char *p, *q, *x; | |
608 | char *if_name = NULL; | |
609 | char buf[256]; | |
610 | char *kvp_net_dir = "/sys/class/net/"; | |
611 | char dev_id[256]; | |
612 | ||
613 | dir = opendir(kvp_net_dir); | |
614 | if (dir == NULL) | |
615 | return NULL; | |
616 | ||
617 | snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); | |
618 | q = dev_id + strlen(kvp_net_dir); | |
619 | ||
620 | while ((entry = readdir(dir)) != NULL) { | |
621 | /* | |
622 | * Set the state for the next pass. | |
623 | */ | |
624 | *q = '\0'; | |
625 | strcat(dev_id, entry->d_name); | |
626 | strcat(dev_id, "/device/device_id"); | |
627 | ||
628 | file = fopen(dev_id, "r"); | |
629 | if (file == NULL) | |
630 | continue; | |
631 | ||
632 | p = fgets(buf, sizeof(buf), file); | |
633 | if (p) { | |
634 | x = strchr(p, '\n'); | |
635 | if (x) | |
636 | *x = '\0'; | |
637 | ||
638 | if (!strcmp(p, guid)) { | |
639 | /* | |
640 | * Found the guid match; return the interface | |
641 | * name. The caller will free the memory. | |
642 | */ | |
643 | if_name = strdup(entry->d_name); | |
644 | fclose(file); | |
645 | break; | |
646 | } | |
647 | } | |
648 | fclose(file); | |
649 | } | |
650 | ||
651 | closedir(dir); | |
652 | return if_name; | |
653 | } | |
654 | ||
655 | /* | |
656 | * Retrieve the MAC address given the interface name. | |
657 | */ | |
658 | ||
659 | static char *kvp_if_name_to_mac(char *if_name) | |
660 | { | |
661 | FILE *file; | |
662 | char *p, *x; | |
663 | char buf[256]; | |
664 | char addr_file[256]; | |
665 | int i; | |
666 | char *mac_addr = NULL; | |
667 | ||
668 | snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", | |
669 | if_name, "/address"); | |
670 | ||
671 | file = fopen(addr_file, "r"); | |
672 | if (file == NULL) | |
673 | return NULL; | |
674 | ||
675 | p = fgets(buf, sizeof(buf), file); | |
676 | if (p) { | |
677 | x = strchr(p, '\n'); | |
678 | if (x) | |
679 | *x = '\0'; | |
680 | for (i = 0; i < strlen(p); i++) | |
681 | p[i] = toupper(p[i]); | |
682 | mac_addr = strdup(p); | |
683 | } | |
684 | ||
685 | fclose(file); | |
686 | return mac_addr; | |
687 | } | |
688 | ||
689 | ||
16e87100 S |
690 | /* |
691 | * Retrieve the interface name given tha MAC address. | |
692 | */ | |
693 | ||
694 | static char *kvp_mac_to_if_name(char *mac) | |
695 | { | |
696 | DIR *dir; | |
697 | struct dirent *entry; | |
698 | FILE *file; | |
699 | char *p, *q, *x; | |
700 | char *if_name = NULL; | |
701 | char buf[256]; | |
702 | char *kvp_net_dir = "/sys/class/net/"; | |
703 | char dev_id[256]; | |
704 | int i; | |
705 | ||
706 | dir = opendir(kvp_net_dir); | |
707 | if (dir == NULL) | |
708 | return NULL; | |
709 | ||
710 | snprintf(dev_id, sizeof(dev_id), kvp_net_dir); | |
711 | q = dev_id + strlen(kvp_net_dir); | |
712 | ||
713 | while ((entry = readdir(dir)) != NULL) { | |
714 | /* | |
715 | * Set the state for the next pass. | |
716 | */ | |
717 | *q = '\0'; | |
718 | ||
719 | strcat(dev_id, entry->d_name); | |
720 | strcat(dev_id, "/address"); | |
721 | ||
722 | file = fopen(dev_id, "r"); | |
723 | if (file == NULL) | |
724 | continue; | |
725 | ||
726 | p = fgets(buf, sizeof(buf), file); | |
727 | if (p) { | |
728 | x = strchr(p, '\n'); | |
729 | if (x) | |
730 | *x = '\0'; | |
731 | ||
732 | for (i = 0; i < strlen(p); i++) | |
733 | p[i] = toupper(p[i]); | |
734 | ||
735 | if (!strcmp(p, mac)) { | |
736 | /* | |
737 | * Found the MAC match; return the interface | |
738 | * name. The caller will free the memory. | |
739 | */ | |
740 | if_name = strdup(entry->d_name); | |
741 | fclose(file); | |
742 | break; | |
743 | } | |
744 | } | |
745 | fclose(file); | |
746 | } | |
747 | ||
748 | closedir(dir); | |
749 | return if_name; | |
750 | } | |
751 | ||
752 | ||
4a52c4af S |
753 | static void kvp_process_ipconfig_file(char *cmd, |
754 | char *config_buf, int len, | |
755 | int element_size, int offset) | |
756 | { | |
757 | char buf[256]; | |
758 | char *p; | |
759 | char *x; | |
760 | FILE *file; | |
761 | ||
762 | /* | |
763 | * First execute the command. | |
764 | */ | |
765 | file = popen(cmd, "r"); | |
766 | if (file == NULL) | |
767 | return; | |
768 | ||
769 | if (offset == 0) | |
770 | memset(config_buf, 0, len); | |
771 | while ((p = fgets(buf, sizeof(buf), file)) != NULL) { | |
772 | if ((len - strlen(config_buf)) < (element_size + 1)) | |
773 | break; | |
774 | ||
775 | x = strchr(p, '\n'); | |
f14e600a TH |
776 | if (x) |
777 | *x = '\0'; | |
778 | ||
4a52c4af S |
779 | strcat(config_buf, p); |
780 | strcat(config_buf, ";"); | |
781 | } | |
782 | pclose(file); | |
783 | } | |
784 | ||
785 | static void kvp_get_ipconfig_info(char *if_name, | |
786 | struct hv_kvp_ipaddr_value *buffer) | |
787 | { | |
788 | char cmd[512]; | |
c0503725 S |
789 | char dhcp_info[128]; |
790 | char *p; | |
791 | FILE *file; | |
4a52c4af S |
792 | |
793 | /* | |
794 | * Get the address of default gateway (ipv4). | |
795 | */ | |
796 | sprintf(cmd, "%s %s", "ip route show dev", if_name); | |
797 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
798 | ||
799 | /* | |
800 | * Execute the command to gather gateway info. | |
801 | */ | |
802 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
803 | (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); | |
804 | ||
805 | /* | |
806 | * Get the address of default gateway (ipv6). | |
807 | */ | |
808 | sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); | |
809 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
810 | ||
811 | /* | |
812 | * Execute the command to gather gateway info (ipv6). | |
813 | */ | |
814 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
815 | (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); | |
816 | ||
96929887 S |
817 | |
818 | /* | |
819 | * Gather the DNS state. | |
820 | * Since there is no standard way to get this information | |
821 | * across various distributions of interest; we just invoke | |
822 | * an external script that needs to be ported across distros | |
823 | * of interest. | |
824 | * | |
825 | * Following is the expected format of the information from the script: | |
826 | * | |
827 | * ipaddr1 (nameserver1) | |
828 | * ipaddr2 (nameserver2) | |
829 | * . | |
830 | * . | |
831 | */ | |
832 | ||
833 | sprintf(cmd, "%s", "hv_get_dns_info"); | |
834 | ||
835 | /* | |
836 | * Execute the command to gather DNS info. | |
837 | */ | |
838 | kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, | |
839 | (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); | |
c0503725 S |
840 | |
841 | /* | |
842 | * Gather the DHCP state. | |
843 | * We will gather this state by invoking an external script. | |
844 | * The parameter to the script is the interface name. | |
845 | * Here is the expected output: | |
846 | * | |
847 | * Enabled: DHCP enabled. | |
848 | */ | |
849 | ||
850 | sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name); | |
851 | ||
852 | file = popen(cmd, "r"); | |
853 | if (file == NULL) | |
854 | return; | |
855 | ||
856 | p = fgets(dhcp_info, sizeof(dhcp_info), file); | |
857 | if (p == NULL) { | |
858 | pclose(file); | |
859 | return; | |
860 | } | |
861 | ||
862 | if (!strncmp(p, "Enabled", 7)) | |
863 | buffer->dhcp_enabled = 1; | |
864 | else | |
865 | buffer->dhcp_enabled = 0; | |
866 | ||
867 | pclose(file); | |
4a52c4af S |
868 | } |
869 | ||
870 | ||
6a60a6a8 S |
871 | static unsigned int hweight32(unsigned int *w) |
872 | { | |
873 | unsigned int res = *w - ((*w >> 1) & 0x55555555); | |
874 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
875 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
876 | res = res + (res >> 8); | |
877 | return (res + (res >> 16)) & 0x000000FF; | |
878 | } | |
879 | ||
af733015 S |
880 | static int kvp_process_ip_address(void *addrp, |
881 | int family, char *buffer, | |
882 | int length, int *offset) | |
883 | { | |
884 | struct sockaddr_in *addr; | |
885 | struct sockaddr_in6 *addr6; | |
886 | int addr_length; | |
887 | char tmp[50]; | |
888 | const char *str; | |
889 | ||
890 | if (family == AF_INET) { | |
891 | addr = (struct sockaddr_in *)addrp; | |
892 | str = inet_ntop(family, &addr->sin_addr, tmp, 50); | |
893 | addr_length = INET_ADDRSTRLEN; | |
894 | } else { | |
895 | addr6 = (struct sockaddr_in6 *)addrp; | |
896 | str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); | |
897 | addr_length = INET6_ADDRSTRLEN; | |
898 | } | |
899 | ||
3321e738 | 900 | if ((length - *offset) < addr_length + 2) |
16e87100 | 901 | return HV_E_FAIL; |
af733015 S |
902 | if (str == NULL) { |
903 | strcpy(buffer, "inet_ntop failed\n"); | |
16e87100 | 904 | return HV_E_FAIL; |
af733015 S |
905 | } |
906 | if (*offset == 0) | |
907 | strcpy(buffer, tmp); | |
3321e738 S |
908 | else { |
909 | strcat(buffer, ";"); | |
af733015 | 910 | strcat(buffer, tmp); |
3321e738 | 911 | } |
af733015 S |
912 | |
913 | *offset += strlen(str) + 1; | |
3321e738 | 914 | |
af733015 S |
915 | return 0; |
916 | } | |
917 | ||
cc04acf5 | 918 | static int |
4a3b97e5 | 919 | kvp_get_ip_info(int family, char *if_name, int op, |
0ecaa198 | 920 | void *out_buffer, int length) |
cc04acf5 KS |
921 | { |
922 | struct ifaddrs *ifap; | |
923 | struct ifaddrs *curp; | |
cc04acf5 | 924 | int offset = 0; |
04405784 | 925 | int sn_offset = 0; |
cc04acf5 | 926 | int error = 0; |
0ecaa198 S |
927 | char *buffer; |
928 | struct hv_kvp_ipaddr_value *ip_buffer; | |
6a60a6a8 S |
929 | char cidr_mask[5]; /* /xyz */ |
930 | int weight; | |
931 | int i; | |
932 | unsigned int *w; | |
933 | char *sn_str; | |
934 | struct sockaddr_in6 *addr6; | |
0ecaa198 S |
935 | |
936 | if (op == KVP_OP_ENUMERATE) { | |
937 | buffer = out_buffer; | |
938 | } else { | |
939 | ip_buffer = out_buffer; | |
940 | buffer = (char *)ip_buffer->ip_addr; | |
941 | ip_buffer->addr_family = 0; | |
942 | } | |
cc04acf5 KS |
943 | /* |
944 | * On entry into this function, the buffer is capable of holding the | |
0ecaa198 | 945 | * maximum key value. |
cc04acf5 KS |
946 | */ |
947 | ||
948 | if (getifaddrs(&ifap)) { | |
949 | strcpy(buffer, "getifaddrs failed\n"); | |
16e87100 | 950 | return HV_E_FAIL; |
cc04acf5 KS |
951 | } |
952 | ||
953 | curp = ifap; | |
954 | while (curp != NULL) { | |
0ecaa198 S |
955 | if (curp->ifa_addr == NULL) { |
956 | curp = curp->ifa_next; | |
957 | continue; | |
958 | } | |
cc04acf5 | 959 | |
0ecaa198 S |
960 | if ((if_name != NULL) && |
961 | (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { | |
962 | /* | |
963 | * We want info about a specific interface; | |
964 | * just continue. | |
965 | */ | |
966 | curp = curp->ifa_next; | |
967 | continue; | |
968 | } | |
cc04acf5 | 969 | |
0ecaa198 S |
970 | /* |
971 | * We only support two address families: AF_INET and AF_INET6. | |
972 | * If a family value of 0 is specified, we collect both | |
973 | * supported address families; if not we gather info on | |
974 | * the specified address family. | |
975 | */ | |
3321e738 S |
976 | if ((((family != 0) && |
977 | (curp->ifa_addr->sa_family != family))) || | |
978 | (curp->ifa_flags & IFF_LOOPBACK)) { | |
0ecaa198 S |
979 | curp = curp->ifa_next; |
980 | continue; | |
981 | } | |
982 | if ((curp->ifa_addr->sa_family != AF_INET) && | |
983 | (curp->ifa_addr->sa_family != AF_INET6)) { | |
984 | curp = curp->ifa_next; | |
985 | continue; | |
986 | } | |
987 | ||
0d5b6b19 S |
988 | if (op == KVP_OP_GET_IP_INFO) { |
989 | /* | |
990 | * Gather info other than the IP address. | |
991 | * IP address info will be gathered later. | |
992 | */ | |
04405784 | 993 | if (curp->ifa_addr->sa_family == AF_INET) { |
0d5b6b19 | 994 | ip_buffer->addr_family |= ADDR_FAMILY_IPV4; |
04405784 S |
995 | /* |
996 | * Get subnet info. | |
997 | */ | |
998 | error = kvp_process_ip_address( | |
999 | curp->ifa_netmask, | |
1000 | AF_INET, | |
1001 | (char *) | |
1002 | ip_buffer->sub_net, | |
1003 | length, | |
1004 | &sn_offset); | |
1005 | if (error) | |
1006 | goto gather_ipaddr; | |
1007 | } else { | |
0d5b6b19 | 1008 | ip_buffer->addr_family |= ADDR_FAMILY_IPV6; |
6a60a6a8 | 1009 | |
04405784 | 1010 | /* |
6a60a6a8 | 1011 | * Get subnet info in CIDR format. |
04405784 | 1012 | */ |
6a60a6a8 S |
1013 | weight = 0; |
1014 | sn_str = (char *)ip_buffer->sub_net; | |
1015 | addr6 = (struct sockaddr_in6 *) | |
1016 | curp->ifa_netmask; | |
1017 | w = addr6->sin6_addr.s6_addr32; | |
1018 | ||
1019 | for (i = 0; i < 4; i++) | |
1020 | weight += hweight32(&w[i]); | |
1021 | ||
1022 | sprintf(cidr_mask, "/%d", weight); | |
1023 | if ((length - sn_offset) < | |
1024 | (strlen(cidr_mask) + 1)) | |
04405784 | 1025 | goto gather_ipaddr; |
6a60a6a8 S |
1026 | |
1027 | if (sn_offset == 0) | |
1028 | strcpy(sn_str, cidr_mask); | |
ed4bb974 S |
1029 | else { |
1030 | strcat((char *)ip_buffer->sub_net, ";"); | |
6a60a6a8 | 1031 | strcat(sn_str, cidr_mask); |
ed4bb974 | 1032 | } |
6a60a6a8 | 1033 | sn_offset += strlen(sn_str) + 1; |
04405784 | 1034 | } |
4a52c4af S |
1035 | |
1036 | /* | |
1037 | * Collect other ip related configuration info. | |
1038 | */ | |
1039 | ||
1040 | kvp_get_ipconfig_info(if_name, ip_buffer); | |
0d5b6b19 S |
1041 | } |
1042 | ||
04405784 | 1043 | gather_ipaddr: |
af733015 S |
1044 | error = kvp_process_ip_address(curp->ifa_addr, |
1045 | curp->ifa_addr->sa_family, | |
1046 | buffer, | |
1047 | length, &offset); | |
1048 | if (error) | |
1049 | goto getaddr_done; | |
0ecaa198 | 1050 | |
cc04acf5 KS |
1051 | curp = curp->ifa_next; |
1052 | } | |
1053 | ||
1054 | getaddr_done: | |
1055 | freeifaddrs(ifap); | |
1056 | return error; | |
1057 | } | |
1058 | ||
1059 | ||
32061b4d S |
1060 | static int expand_ipv6(char *addr, int type) |
1061 | { | |
1062 | int ret; | |
1063 | struct in6_addr v6_addr; | |
1064 | ||
1065 | ret = inet_pton(AF_INET6, addr, &v6_addr); | |
1066 | ||
1067 | if (ret != 1) { | |
1068 | if (type == NETMASK) | |
1069 | return 1; | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" | |
1074 | "%02x%02x:%02x%02x:%02x%02x", | |
1075 | (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], | |
1076 | (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], | |
1077 | (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], | |
1078 | (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], | |
1079 | (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], | |
1080 | (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], | |
1081 | (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], | |
1082 | (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); | |
1083 | ||
1084 | return 1; | |
1085 | ||
1086 | } | |
1087 | ||
1088 | static int is_ipv4(char *addr) | |
1089 | { | |
1090 | int ret; | |
1091 | struct in_addr ipv4_addr; | |
1092 | ||
1093 | ret = inet_pton(AF_INET, addr, &ipv4_addr); | |
1094 | ||
1095 | if (ret == 1) | |
1096 | return 1; | |
1097 | return 0; | |
1098 | } | |
1099 | ||
1100 | static int parse_ip_val_buffer(char *in_buf, int *offset, | |
1101 | char *out_buf, int out_len) | |
1102 | { | |
1103 | char *x; | |
1104 | char *start; | |
1105 | ||
1106 | /* | |
1107 | * in_buf has sequence of characters that are seperated by | |
1108 | * the character ';'. The last sequence does not have the | |
1109 | * terminating ";" character. | |
1110 | */ | |
1111 | start = in_buf + *offset; | |
1112 | ||
1113 | x = strchr(start, ';'); | |
1114 | if (x) | |
1115 | *x = 0; | |
1116 | else | |
1117 | x = start + strlen(start); | |
1118 | ||
1119 | if (strlen(start) != 0) { | |
1120 | int i = 0; | |
1121 | /* | |
1122 | * Get rid of leading spaces. | |
1123 | */ | |
1124 | while (start[i] == ' ') | |
1125 | i++; | |
1126 | ||
1127 | if ((x - start) <= out_len) { | |
1128 | strcpy(out_buf, (start + i)); | |
1129 | *offset += (x - start) + 1; | |
1130 | return 1; | |
1131 | } | |
1132 | } | |
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) | |
1137 | { | |
1138 | int ret; | |
1139 | ||
1140 | ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); | |
1141 | ||
1142 | if (ret < 0) | |
1143 | return HV_E_FAIL; | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | ||
1149 | static int process_ip_string(FILE *f, char *ip_string, int type) | |
1150 | { | |
1151 | int error = 0; | |
1152 | char addr[INET6_ADDRSTRLEN]; | |
1153 | int i = 0; | |
1154 | int j = 0; | |
1155 | char str[256]; | |
1156 | char sub_str[10]; | |
1157 | int offset = 0; | |
1158 | ||
1159 | memset(addr, 0, sizeof(addr)); | |
1160 | ||
1161 | while (parse_ip_val_buffer(ip_string, &offset, addr, | |
1162 | (MAX_IP_ADDR_SIZE * 2))) { | |
1163 | ||
1164 | sub_str[0] = 0; | |
1165 | if (is_ipv4(addr)) { | |
1166 | switch (type) { | |
1167 | case IPADDR: | |
1168 | snprintf(str, sizeof(str), "%s", "IPADDR"); | |
1169 | break; | |
1170 | case NETMASK: | |
1171 | snprintf(str, sizeof(str), "%s", "NETMASK"); | |
1172 | break; | |
1173 | case GATEWAY: | |
1174 | snprintf(str, sizeof(str), "%s", "GATEWAY"); | |
1175 | break; | |
1176 | case DNS: | |
1177 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1178 | break; | |
1179 | } | |
0783d72f TH |
1180 | |
1181 | if (type == DNS) { | |
32061b4d | 1182 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); |
0783d72f TH |
1183 | } else if (type == GATEWAY && i == 0) { |
1184 | ++i; | |
1185 | } else { | |
1186 | snprintf(sub_str, sizeof(sub_str), "%d", i++); | |
32061b4d S |
1187 | } |
1188 | ||
1189 | ||
1190 | } else if (expand_ipv6(addr, type)) { | |
1191 | switch (type) { | |
1192 | case IPADDR: | |
1193 | snprintf(str, sizeof(str), "%s", "IPV6ADDR"); | |
1194 | break; | |
1195 | case NETMASK: | |
1196 | snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); | |
1197 | break; | |
1198 | case GATEWAY: | |
1199 | snprintf(str, sizeof(str), "%s", | |
1200 | "IPV6_DEFAULTGW"); | |
1201 | break; | |
1202 | case DNS: | |
1203 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1204 | break; | |
1205 | } | |
0783d72f TH |
1206 | |
1207 | if (type == DNS) { | |
1208 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); | |
1209 | } else if (j == 0) { | |
1210 | ++j; | |
1211 | } else { | |
1212 | snprintf(sub_str, sizeof(sub_str), "_%d", j++); | |
32061b4d S |
1213 | } |
1214 | } else { | |
1215 | return HV_INVALIDARG; | |
1216 | } | |
1217 | ||
1218 | error = kvp_write_file(f, str, sub_str, addr); | |
1219 | if (error) | |
1220 | return error; | |
1221 | memset(addr, 0, sizeof(addr)); | |
1222 | } | |
1223 | ||
1224 | return 0; | |
1225 | } | |
1226 | ||
1227 | static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) | |
1228 | { | |
1229 | int error = 0; | |
1230 | char if_file[128]; | |
1231 | FILE *file; | |
1232 | char cmd[512]; | |
1233 | char *mac_addr; | |
1234 | ||
1235 | /* | |
1236 | * Set the configuration for the specified interface with | |
1237 | * the information provided. Since there is no standard | |
1238 | * way to configure an interface, we will have an external | |
1239 | * script that does the job of configuring the interface and | |
1240 | * flushing the configuration. | |
1241 | * | |
1242 | * The parameters passed to this external script are: | |
1243 | * 1. A configuration file that has the specified configuration. | |
1244 | * | |
1245 | * We will embed the name of the interface in the configuration | |
1246 | * file: ifcfg-ethx (where ethx is the interface name). | |
1247 | * | |
1248 | * The information provided here may be more than what is needed | |
1249 | * in a given distro to configure the interface and so are free | |
1250 | * ignore information that may not be relevant. | |
1251 | * | |
1252 | * Here is the format of the ip configuration file: | |
1253 | * | |
1254 | * HWADDR=macaddr | |
0783d72f TH |
1255 | * DEVICE=interface name |
1256 | * BOOTPROTO=<protocol> (where <protocol> is "dhcp" if DHCP is configured | |
1257 | * or "none" if no boot-time protocol should be used) | |
32061b4d | 1258 | * |
0783d72f TH |
1259 | * IPADDR0=ipaddr1 |
1260 | * IPADDR1=ipaddr2 | |
1261 | * IPADDRx=ipaddry (where y = x + 1) | |
32061b4d | 1262 | * |
0783d72f TH |
1263 | * NETMASK0=netmask1 |
1264 | * NETMASKx=netmasky (where y = x + 1) | |
32061b4d S |
1265 | * |
1266 | * GATEWAY=ipaddr1 | |
0783d72f | 1267 | * GATEWAYx=ipaddry (where y = x + 1) |
32061b4d S |
1268 | * |
1269 | * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) | |
1270 | * | |
1271 | * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be | |
1272 | * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as | |
1273 | * IPV6NETMASK. | |
1274 | * | |
1275 | * The host can specify multiple ipv4 and ipv6 addresses to be | |
1276 | * configured for the interface. Furthermore, the configuration | |
1277 | * needs to be persistent. A subsequent GET call on the interface | |
1278 | * is expected to return the configuration that is set via the SET | |
1279 | * call. | |
1280 | */ | |
1281 | ||
1282 | snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, | |
40424f5f | 1283 | "/ifcfg-", if_name); |
32061b4d S |
1284 | |
1285 | file = fopen(if_file, "w"); | |
1286 | ||
1287 | if (file == NULL) { | |
12e50c30 TH |
1288 | syslog(LOG_ERR, "Failed to open config file; error: %d %s", |
1289 | errno, strerror(errno)); | |
32061b4d S |
1290 | return HV_E_FAIL; |
1291 | } | |
1292 | ||
1293 | /* | |
1294 | * First write out the MAC address. | |
1295 | */ | |
1296 | ||
1297 | mac_addr = kvp_if_name_to_mac(if_name); | |
1298 | if (mac_addr == NULL) { | |
1299 | error = HV_E_FAIL; | |
1300 | goto setval_error; | |
1301 | } | |
1302 | ||
1303 | error = kvp_write_file(file, "HWADDR", "", mac_addr); | |
1304 | if (error) | |
1305 | goto setval_error; | |
1306 | ||
0783d72f | 1307 | error = kvp_write_file(file, "DEVICE", "", if_name); |
32061b4d S |
1308 | if (error) |
1309 | goto setval_error; | |
1310 | ||
1311 | if (new_val->dhcp_enabled) { | |
0783d72f | 1312 | error = kvp_write_file(file, "BOOTPROTO", "", "dhcp"); |
32061b4d S |
1313 | if (error) |
1314 | goto setval_error; | |
1315 | ||
1316 | /* | |
1317 | * We are done!. | |
1318 | */ | |
1319 | goto setval_done; | |
0783d72f TH |
1320 | |
1321 | } else { | |
1322 | error = kvp_write_file(file, "BOOTPROTO", "", "none"); | |
1323 | if (error) | |
1324 | goto setval_error; | |
32061b4d S |
1325 | } |
1326 | ||
1327 | /* | |
1328 | * Write the configuration for ipaddress, netmask, gateway and | |
1329 | * name servers. | |
1330 | */ | |
1331 | ||
1332 | error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); | |
1333 | if (error) | |
1334 | goto setval_error; | |
1335 | ||
1336 | error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); | |
1337 | if (error) | |
1338 | goto setval_error; | |
1339 | ||
1340 | error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); | |
1341 | if (error) | |
1342 | goto setval_error; | |
1343 | ||
1344 | error = process_ip_string(file, (char *)new_val->dns_addr, DNS); | |
1345 | if (error) | |
1346 | goto setval_error; | |
1347 | ||
1348 | setval_done: | |
1349 | free(mac_addr); | |
1350 | fclose(file); | |
1351 | ||
1352 | /* | |
1353 | * Now that we have populated the configuration file, | |
1354 | * invoke the external script to do its magic. | |
1355 | */ | |
1356 | ||
1357 | snprintf(cmd, sizeof(cmd), "%s %s", "hv_set_ifconfig", if_file); | |
1358 | system(cmd); | |
1359 | return 0; | |
1360 | ||
1361 | setval_error: | |
1362 | syslog(LOG_ERR, "Failed to write config file"); | |
1363 | free(mac_addr); | |
1364 | fclose(file); | |
1365 | return error; | |
1366 | } | |
1367 | ||
1368 | ||
cc04acf5 KS |
1369 | static int |
1370 | kvp_get_domain_name(char *buffer, int length) | |
1371 | { | |
1372 | struct addrinfo hints, *info ; | |
cc04acf5 KS |
1373 | int error = 0; |
1374 | ||
5be528c2 | 1375 | gethostname(buffer, length); |
cc04acf5 KS |
1376 | memset(&hints, 0, sizeof(hints)); |
1377 | hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ | |
1378 | hints.ai_socktype = SOCK_STREAM; | |
1379 | hints.ai_flags = AI_CANONNAME; | |
1380 | ||
5be528c2 | 1381 | error = getaddrinfo(buffer, NULL, &hints, &info); |
cc04acf5 KS |
1382 | if (error != 0) { |
1383 | strcpy(buffer, "getaddrinfo failed\n"); | |
5be528c2 | 1384 | return error; |
cc04acf5 KS |
1385 | } |
1386 | strcpy(buffer, info->ai_canonname); | |
cc04acf5 KS |
1387 | freeaddrinfo(info); |
1388 | return error; | |
1389 | } | |
1390 | ||
1391 | static int | |
1392 | netlink_send(int fd, struct cn_msg *msg) | |
1393 | { | |
1394 | struct nlmsghdr *nlh; | |
1395 | unsigned int size; | |
1396 | struct msghdr message; | |
1397 | char buffer[64]; | |
1398 | struct iovec iov[2]; | |
1399 | ||
1400 | size = NLMSG_SPACE(sizeof(struct cn_msg) + msg->len); | |
1401 | ||
1402 | nlh = (struct nlmsghdr *)buffer; | |
1403 | nlh->nlmsg_seq = 0; | |
1404 | nlh->nlmsg_pid = getpid(); | |
1405 | nlh->nlmsg_type = NLMSG_DONE; | |
1406 | nlh->nlmsg_len = NLMSG_LENGTH(size - sizeof(*nlh)); | |
1407 | nlh->nlmsg_flags = 0; | |
1408 | ||
1409 | iov[0].iov_base = nlh; | |
1410 | iov[0].iov_len = sizeof(*nlh); | |
1411 | ||
1412 | iov[1].iov_base = msg; | |
1413 | iov[1].iov_len = size; | |
1414 | ||
1415 | memset(&message, 0, sizeof(message)); | |
1416 | message.msg_name = &addr; | |
1417 | message.msg_namelen = sizeof(addr); | |
1418 | message.msg_iov = iov; | |
1419 | message.msg_iovlen = 2; | |
1420 | ||
1421 | return sendmsg(fd, &message, 0); | |
1422 | } | |
1423 | ||
7989f7d5 | 1424 | int main(void) |
cc04acf5 | 1425 | { |
f4685fa6 | 1426 | int fd, len, nl_group; |
cc04acf5 KS |
1427 | int error; |
1428 | struct cn_msg *message; | |
1429 | struct pollfd pfd; | |
1430 | struct nlmsghdr *incoming_msg; | |
1431 | struct cn_msg *incoming_cn_msg; | |
26403354 | 1432 | struct hv_kvp_msg *hv_msg; |
7989f7d5 | 1433 | char *p; |
cc04acf5 KS |
1434 | char *key_value; |
1435 | char *key_name; | |
b47a81dc S |
1436 | int op; |
1437 | int pool; | |
32061b4d S |
1438 | char *if_name; |
1439 | struct hv_kvp_ipaddr_value *kvp_ip_val; | |
cc04acf5 KS |
1440 | |
1441 | daemon(1, 0); | |
1442 | openlog("KVP", 0, LOG_USER); | |
1443 | syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); | |
1444 | /* | |
1445 | * Retrieve OS release information. | |
1446 | */ | |
1447 | kvp_get_os_info(); | |
1448 | ||
db425334 S |
1449 | if (kvp_file_init()) { |
1450 | syslog(LOG_ERR, "Failed to initialize the pools"); | |
6bb22fea | 1451 | exit(EXIT_FAILURE); |
db425334 S |
1452 | } |
1453 | ||
cc04acf5 KS |
1454 | fd = socket(AF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); |
1455 | if (fd < 0) { | |
12e50c30 TH |
1456 | syslog(LOG_ERR, "netlink socket creation failed; error: %d %s", errno, |
1457 | strerror(errno)); | |
6bb22fea | 1458 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1459 | } |
1460 | addr.nl_family = AF_NETLINK; | |
1461 | addr.nl_pad = 0; | |
1462 | addr.nl_pid = 0; | |
77d6a528 | 1463 | addr.nl_groups = 0; |
cc04acf5 KS |
1464 | |
1465 | ||
1466 | error = bind(fd, (struct sockaddr *)&addr, sizeof(addr)); | |
1467 | if (error < 0) { | |
12e50c30 | 1468 | syslog(LOG_ERR, "bind failed; error: %d %s", errno, strerror(errno)); |
cc04acf5 | 1469 | close(fd); |
6bb22fea | 1470 | exit(EXIT_FAILURE); |
cc04acf5 | 1471 | } |
f4685fa6 | 1472 | nl_group = CN_KVP_IDX; |
35901603 TH |
1473 | |
1474 | if (setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &nl_group, sizeof(nl_group)) < 0) { | |
1475 | syslog(LOG_ERR, "setsockopt failed; error: %d %s", errno, strerror(errno)); | |
1476 | close(fd); | |
1477 | exit(EXIT_FAILURE); | |
1478 | } | |
1479 | ||
cc04acf5 KS |
1480 | /* |
1481 | * Register ourselves with the kernel. | |
1482 | */ | |
1483 | message = (struct cn_msg *)kvp_send_buffer; | |
1484 | message->id.idx = CN_KVP_IDX; | |
1485 | message->id.val = CN_KVP_VAL; | |
26403354 S |
1486 | |
1487 | hv_msg = (struct hv_kvp_msg *)message->data; | |
b47a81dc | 1488 | hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; |
cc04acf5 | 1489 | message->ack = 0; |
26403354 | 1490 | message->len = sizeof(struct hv_kvp_msg); |
cc04acf5 KS |
1491 | |
1492 | len = netlink_send(fd, message); | |
1493 | if (len < 0) { | |
12e50c30 | 1494 | syslog(LOG_ERR, "netlink_send failed; error: %d %s", errno, strerror(errno)); |
cc04acf5 | 1495 | close(fd); |
6bb22fea | 1496 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1497 | } |
1498 | ||
1499 | pfd.fd = fd; | |
1500 | ||
1501 | while (1) { | |
bcc2c9c3 OH |
1502 | struct sockaddr *addr_p = (struct sockaddr *) &addr; |
1503 | socklen_t addr_l = sizeof(addr); | |
cc04acf5 KS |
1504 | pfd.events = POLLIN; |
1505 | pfd.revents = 0; | |
4d81e307 TH |
1506 | |
1507 | if (poll(&pfd, 1, -1) < 0) { | |
1508 | syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno)); | |
1509 | if (errno == EINVAL) { | |
1510 | close(fd); | |
1511 | exit(EXIT_FAILURE); | |
1512 | } | |
1513 | else | |
1514 | continue; | |
1515 | } | |
cc04acf5 | 1516 | |
bcc2c9c3 OH |
1517 | len = recvfrom(fd, kvp_recv_buffer, sizeof(kvp_recv_buffer), 0, |
1518 | addr_p, &addr_l); | |
cc04acf5 | 1519 | |
95a69ada | 1520 | if (len < 0) { |
bcc2c9c3 OH |
1521 | syslog(LOG_ERR, "recvfrom failed; pid:%u error:%d %s", |
1522 | addr.nl_pid, errno, strerror(errno)); | |
cc04acf5 KS |
1523 | close(fd); |
1524 | return -1; | |
1525 | } | |
1526 | ||
95a69ada TH |
1527 | if (addr.nl_pid) { |
1528 | syslog(LOG_WARNING, "Received packet from untrusted pid:%u", | |
1529 | addr.nl_pid); | |
1530 | continue; | |
1531 | } | |
1532 | ||
cc04acf5 | 1533 | incoming_msg = (struct nlmsghdr *)kvp_recv_buffer; |
75db6014 TH |
1534 | |
1535 | if (incoming_msg->nlmsg_type != NLMSG_DONE) | |
1536 | continue; | |
1537 | ||
cc04acf5 | 1538 | incoming_cn_msg = (struct cn_msg *)NLMSG_DATA(incoming_msg); |
26403354 | 1539 | hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; |
cc04acf5 | 1540 | |
b47a81dc S |
1541 | /* |
1542 | * We will use the KVP header information to pass back | |
1543 | * the error from this daemon. So, first copy the state | |
1544 | * and set the error code to success. | |
1545 | */ | |
1546 | op = hv_msg->kvp_hdr.operation; | |
1547 | pool = hv_msg->kvp_hdr.pool; | |
1548 | hv_msg->error = HV_S_OK; | |
1549 | ||
1550 | if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { | |
cc04acf5 KS |
1551 | /* |
1552 | * Driver is registering with us; stash away the version | |
1553 | * information. | |
1554 | */ | |
b47a81dc | 1555 | in_hand_shake = 0; |
e485ceac | 1556 | p = (char *)hv_msg->body.kvp_register.version; |
7989f7d5 | 1557 | lic_version = malloc(strlen(p) + 1); |
cc04acf5 | 1558 | if (lic_version) { |
7989f7d5 | 1559 | strcpy(lic_version, p); |
cc04acf5 KS |
1560 | syslog(LOG_INFO, "KVP LIC Version: %s", |
1561 | lic_version); | |
1562 | } else { | |
1563 | syslog(LOG_ERR, "malloc failed"); | |
1564 | } | |
1565 | continue; | |
b47a81dc | 1566 | } |
cc04acf5 | 1567 | |
b47a81dc | 1568 | switch (op) { |
16e87100 S |
1569 | case KVP_OP_GET_IP_INFO: |
1570 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1571 | if_name = | |
1572 | kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); | |
1573 | ||
1574 | if (if_name == NULL) { | |
1575 | /* | |
1576 | * We could not map the mac address to an | |
1577 | * interface name; return error. | |
1578 | */ | |
1579 | hv_msg->error = HV_E_FAIL; | |
1580 | break; | |
1581 | } | |
1582 | error = kvp_get_ip_info( | |
1583 | 0, if_name, KVP_OP_GET_IP_INFO, | |
1584 | kvp_ip_val, | |
1585 | (MAX_IP_ADDR_SIZE * 2)); | |
1586 | ||
1587 | if (error) | |
1588 | hv_msg->error = error; | |
1589 | ||
1590 | free(if_name); | |
1591 | break; | |
1592 | ||
32061b4d S |
1593 | case KVP_OP_SET_IP_INFO: |
1594 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1595 | if_name = kvp_get_if_name( | |
1596 | (char *)kvp_ip_val->adapter_id); | |
1597 | if (if_name == NULL) { | |
1598 | /* | |
1599 | * We could not map the guid to an | |
1600 | * interface name; return error. | |
1601 | */ | |
1602 | hv_msg->error = HV_GUID_NOTFOUND; | |
1603 | break; | |
1604 | } | |
1605 | error = kvp_set_ip_info(if_name, kvp_ip_val); | |
1606 | if (error) | |
1607 | hv_msg->error = error; | |
1608 | ||
1609 | free(if_name); | |
1610 | break; | |
1611 | ||
fa3d5b85 | 1612 | case KVP_OP_SET: |
b47a81dc | 1613 | if (kvp_key_add_or_modify(pool, |
db425334 S |
1614 | hv_msg->body.kvp_set.data.key, |
1615 | hv_msg->body.kvp_set.data.key_size, | |
1616 | hv_msg->body.kvp_set.data.value, | |
1617 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1618 | hv_msg->error = HV_S_CONT; |
db425334 S |
1619 | break; |
1620 | ||
fa3d5b85 | 1621 | case KVP_OP_GET: |
b47a81dc | 1622 | if (kvp_get_value(pool, |
db425334 S |
1623 | hv_msg->body.kvp_set.data.key, |
1624 | hv_msg->body.kvp_set.data.key_size, | |
1625 | hv_msg->body.kvp_set.data.value, | |
1626 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1627 | hv_msg->error = HV_S_CONT; |
db425334 S |
1628 | break; |
1629 | ||
fa3d5b85 | 1630 | case KVP_OP_DELETE: |
b47a81dc | 1631 | if (kvp_key_delete(pool, |
db425334 S |
1632 | hv_msg->body.kvp_delete.key, |
1633 | hv_msg->body.kvp_delete.key_size)) | |
b47a81dc | 1634 | hv_msg->error = HV_S_CONT; |
db425334 S |
1635 | break; |
1636 | ||
cc04acf5 | 1637 | default: |
26403354 | 1638 | break; |
cc04acf5 KS |
1639 | } |
1640 | ||
b47a81dc | 1641 | if (op != KVP_OP_ENUMERATE) |
fa3d5b85 S |
1642 | goto kvp_done; |
1643 | ||
adc80ae6 S |
1644 | /* |
1645 | * If the pool is KVP_POOL_AUTO, dynamically generate | |
1646 | * both the key and the value; if not read from the | |
1647 | * appropriate pool. | |
1648 | */ | |
b47a81dc S |
1649 | if (pool != KVP_POOL_AUTO) { |
1650 | if (kvp_pool_enumerate(pool, | |
adc80ae6 S |
1651 | hv_msg->body.kvp_enum_data.index, |
1652 | hv_msg->body.kvp_enum_data.data.key, | |
1653 | HV_KVP_EXCHANGE_MAX_KEY_SIZE, | |
1654 | hv_msg->body.kvp_enum_data.data.value, | |
b47a81dc S |
1655 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
1656 | hv_msg->error = HV_S_CONT; | |
adc80ae6 S |
1657 | goto kvp_done; |
1658 | } | |
1659 | ||
26403354 S |
1660 | hv_msg = (struct hv_kvp_msg *)incoming_cn_msg->data; |
1661 | key_name = (char *)hv_msg->body.kvp_enum_data.data.key; | |
1662 | key_value = (char *)hv_msg->body.kvp_enum_data.data.value; | |
cc04acf5 | 1663 | |
26403354 | 1664 | switch (hv_msg->body.kvp_enum_data.index) { |
cc04acf5 KS |
1665 | case FullyQualifiedDomainName: |
1666 | kvp_get_domain_name(key_value, | |
1667 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE); | |
1668 | strcpy(key_name, "FullyQualifiedDomainName"); | |
1669 | break; | |
1670 | case IntegrationServicesVersion: | |
1671 | strcpy(key_name, "IntegrationServicesVersion"); | |
1672 | strcpy(key_value, lic_version); | |
1673 | break; | |
1674 | case NetworkAddressIPv4: | |
4a3b97e5 | 1675 | kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1676 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1677 | strcpy(key_name, "NetworkAddressIPv4"); |
1678 | break; | |
1679 | case NetworkAddressIPv6: | |
4a3b97e5 | 1680 | kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1681 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1682 | strcpy(key_name, "NetworkAddressIPv6"); |
1683 | break; | |
1684 | case OSBuildNumber: | |
1685 | strcpy(key_value, os_build); | |
1686 | strcpy(key_name, "OSBuildNumber"); | |
1687 | break; | |
1688 | case OSName: | |
1689 | strcpy(key_value, os_name); | |
1690 | strcpy(key_name, "OSName"); | |
1691 | break; | |
1692 | case OSMajorVersion: | |
1693 | strcpy(key_value, os_major); | |
1694 | strcpy(key_name, "OSMajorVersion"); | |
1695 | break; | |
1696 | case OSMinorVersion: | |
1697 | strcpy(key_value, os_minor); | |
1698 | strcpy(key_name, "OSMinorVersion"); | |
1699 | break; | |
1700 | case OSVersion: | |
f426a36c | 1701 | strcpy(key_value, os_version); |
cc04acf5 KS |
1702 | strcpy(key_name, "OSVersion"); |
1703 | break; | |
1704 | case ProcessorArchitecture: | |
1705 | strcpy(key_value, processor_arch); | |
1706 | strcpy(key_name, "ProcessorArchitecture"); | |
1707 | break; | |
1708 | default: | |
b47a81dc | 1709 | hv_msg->error = HV_S_CONT; |
cc04acf5 KS |
1710 | break; |
1711 | } | |
1712 | /* | |
1713 | * Send the value back to the kernel. The response is | |
1714 | * already in the receive buffer. Update the cn_msg header to | |
1715 | * reflect the key value that has been added to the message | |
1716 | */ | |
fa3d5b85 | 1717 | kvp_done: |
cc04acf5 KS |
1718 | |
1719 | incoming_cn_msg->id.idx = CN_KVP_IDX; | |
1720 | incoming_cn_msg->id.val = CN_KVP_VAL; | |
cc04acf5 | 1721 | incoming_cn_msg->ack = 0; |
26403354 | 1722 | incoming_cn_msg->len = sizeof(struct hv_kvp_msg); |
cc04acf5 KS |
1723 | |
1724 | len = netlink_send(fd, incoming_cn_msg); | |
1725 | if (len < 0) { | |
12e50c30 TH |
1726 | syslog(LOG_ERR, "net_link send failed; error: %d %s", errno, |
1727 | strerror(errno)); | |
6bb22fea | 1728 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1729 | } |
1730 | } | |
1731 | ||
1732 | } |