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> | |
cc04acf5 KS |
29 | #include <stdio.h> |
30 | #include <stdlib.h> | |
31 | #include <unistd.h> | |
32 | #include <string.h> | |
32061b4d | 33 | #include <ctype.h> |
cc04acf5 KS |
34 | #include <errno.h> |
35 | #include <arpa/inet.h> | |
eab6af71 | 36 | #include <linux/hyperv.h> |
cc04acf5 | 37 | #include <linux/netlink.h> |
cc04acf5 KS |
38 | #include <ifaddrs.h> |
39 | #include <netdb.h> | |
40 | #include <syslog.h> | |
db425334 S |
41 | #include <sys/stat.h> |
42 | #include <fcntl.h> | |
32061b4d | 43 | #include <dirent.h> |
3321e738 | 44 | #include <net/if.h> |
170f4bea | 45 | #include <getopt.h> |
cc04acf5 KS |
46 | |
47 | /* | |
48 | * KVP protocol: The user mode component first registers with the | |
49 | * the kernel component. Subsequently, the kernel component requests, data | |
50 | * for the specified keys. In response to this message the user mode component | |
51 | * fills in the value corresponding to the specified key. We overload the | |
52 | * sequence field in the cn_msg header to define our KVP message types. | |
53 | * | |
54 | * We use this infrastructure for also supporting queries from user mode | |
55 | * application for state that may be maintained in the KVP kernel component. | |
56 | * | |
cc04acf5 KS |
57 | */ |
58 | ||
cc04acf5 KS |
59 | |
60 | enum key_index { | |
61 | FullyQualifiedDomainName = 0, | |
62 | IntegrationServicesVersion, /*This key is serviced in the kernel*/ | |
63 | NetworkAddressIPv4, | |
64 | NetworkAddressIPv6, | |
65 | OSBuildNumber, | |
66 | OSName, | |
67 | OSMajorVersion, | |
68 | OSMinorVersion, | |
69 | OSVersion, | |
70 | ProcessorArchitecture | |
71 | }; | |
72 | ||
32061b4d S |
73 | |
74 | enum { | |
75 | IPADDR = 0, | |
76 | NETMASK, | |
77 | GATEWAY, | |
78 | DNS | |
79 | }; | |
80 | ||
b47a81dc | 81 | static int in_hand_shake = 1; |
cc04acf5 | 82 | |
7989f7d5 OH |
83 | static char *os_name = ""; |
84 | static char *os_major = ""; | |
85 | static char *os_minor = ""; | |
86 | static char *processor_arch; | |
87 | static char *os_build; | |
f426a36c | 88 | static char *os_version; |
b47a81dc | 89 | static char *lic_version = "Unknown version"; |
58125210 | 90 | static char full_domain_name[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; |
7989f7d5 | 91 | static struct utsname uts_buf; |
cc04acf5 | 92 | |
32061b4d S |
93 | /* |
94 | * The location of the interface configuration file. | |
95 | */ | |
96 | ||
40424f5f | 97 | #define KVP_CONFIG_LOC "/var/lib/hyperv" |
db425334 S |
98 | |
99 | #define MAX_FILE_NAME 100 | |
100 | #define ENTRIES_PER_BLOCK 50 | |
101 | ||
f4685fa6 TH |
102 | #ifndef SOL_NETLINK |
103 | #define SOL_NETLINK 270 | |
104 | #endif | |
105 | ||
db425334 | 106 | struct kvp_record { |
d0cbc156 S |
107 | char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
108 | char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; | |
db425334 S |
109 | }; |
110 | ||
111 | struct kvp_file_state { | |
112 | int fd; | |
113 | int num_blocks; | |
114 | struct kvp_record *records; | |
115 | int num_records; | |
d0cbc156 | 116 | char fname[MAX_FILE_NAME]; |
db425334 S |
117 | }; |
118 | ||
119 | static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; | |
120 | ||
121 | static void kvp_acquire_lock(int pool) | |
122 | { | |
123 | struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0}; | |
124 | fl.l_pid = getpid(); | |
125 | ||
126 | if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { | |
12e50c30 TH |
127 | syslog(LOG_ERR, "Failed to acquire the lock pool: %d; error: %d %s", pool, |
128 | errno, strerror(errno)); | |
6bb22fea | 129 | exit(EXIT_FAILURE); |
db425334 S |
130 | } |
131 | } | |
132 | ||
133 | static void kvp_release_lock(int pool) | |
134 | { | |
135 | struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0}; | |
136 | fl.l_pid = getpid(); | |
137 | ||
138 | if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { | |
12e50c30 TH |
139 | syslog(LOG_ERR, "Failed to release the lock pool: %d; error: %d %s", pool, |
140 | errno, strerror(errno)); | |
6bb22fea | 141 | exit(EXIT_FAILURE); |
db425334 S |
142 | } |
143 | } | |
144 | ||
145 | static void kvp_update_file(int pool) | |
146 | { | |
147 | FILE *filep; | |
db425334 S |
148 | |
149 | /* | |
150 | * We are going to write our in-memory registry out to | |
151 | * disk; acquire the lock first. | |
152 | */ | |
153 | kvp_acquire_lock(pool); | |
154 | ||
8467fdbb | 155 | filep = fopen(kvp_file_info[pool].fname, "we"); |
db425334 | 156 | if (!filep) { |
12e50c30 TH |
157 | syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, |
158 | errno, strerror(errno)); | |
db425334 | 159 | kvp_release_lock(pool); |
6bb22fea | 160 | exit(EXIT_FAILURE); |
db425334 S |
161 | } |
162 | ||
77ce247a | 163 | fwrite(kvp_file_info[pool].records, sizeof(struct kvp_record), |
db425334 S |
164 | kvp_file_info[pool].num_records, filep); |
165 | ||
436473bc BH |
166 | if (ferror(filep) || fclose(filep)) { |
167 | kvp_release_lock(pool); | |
168 | syslog(LOG_ERR, "Failed to write file, pool: %d", pool); | |
169 | exit(EXIT_FAILURE); | |
170 | } | |
171 | ||
db425334 S |
172 | kvp_release_lock(pool); |
173 | } | |
174 | ||
adc80ae6 S |
175 | static void kvp_update_mem_state(int pool) |
176 | { | |
177 | FILE *filep; | |
178 | size_t records_read = 0; | |
179 | struct kvp_record *record = kvp_file_info[pool].records; | |
180 | struct kvp_record *readp; | |
181 | int num_blocks = kvp_file_info[pool].num_blocks; | |
182 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
183 | ||
184 | kvp_acquire_lock(pool); | |
185 | ||
8467fdbb | 186 | filep = fopen(kvp_file_info[pool].fname, "re"); |
adc80ae6 | 187 | if (!filep) { |
12e50c30 TH |
188 | syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, |
189 | errno, strerror(errno)); | |
adc80ae6 | 190 | kvp_release_lock(pool); |
6bb22fea | 191 | exit(EXIT_FAILURE); |
adc80ae6 | 192 | } |
436473bc | 193 | for (;;) { |
adc80ae6 S |
194 | readp = &record[records_read]; |
195 | records_read += fread(readp, sizeof(struct kvp_record), | |
196 | ENTRIES_PER_BLOCK * num_blocks, | |
197 | filep); | |
198 | ||
436473bc BH |
199 | if (ferror(filep)) { |
200 | syslog(LOG_ERR, "Failed to read file, pool: %d", pool); | |
201 | exit(EXIT_FAILURE); | |
202 | } | |
203 | ||
adc80ae6 S |
204 | if (!feof(filep)) { |
205 | /* | |
206 | * We have more data to read. | |
207 | */ | |
208 | num_blocks++; | |
209 | record = realloc(record, alloc_unit * num_blocks); | |
210 | ||
211 | if (record == NULL) { | |
212 | syslog(LOG_ERR, "malloc failed"); | |
6bb22fea | 213 | exit(EXIT_FAILURE); |
adc80ae6 S |
214 | } |
215 | continue; | |
216 | } | |
217 | break; | |
218 | } | |
219 | ||
220 | kvp_file_info[pool].num_blocks = num_blocks; | |
221 | kvp_file_info[pool].records = record; | |
222 | kvp_file_info[pool].num_records = records_read; | |
223 | ||
d5ab4827 | 224 | fclose(filep); |
adc80ae6 S |
225 | kvp_release_lock(pool); |
226 | } | |
db425334 S |
227 | static int kvp_file_init(void) |
228 | { | |
00b83355 | 229 | int fd; |
db425334 S |
230 | FILE *filep; |
231 | size_t records_read; | |
d0cbc156 | 232 | char *fname; |
db425334 S |
233 | struct kvp_record *record; |
234 | struct kvp_record *readp; | |
235 | int num_blocks; | |
236 | int i; | |
237 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
238 | ||
40424f5f | 239 | if (access(KVP_CONFIG_LOC, F_OK)) { |
0bffd25c | 240 | if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) { |
12e50c30 TH |
241 | syslog(LOG_ERR, "Failed to create '%s'; error: %d %s", KVP_CONFIG_LOC, |
242 | errno, strerror(errno)); | |
6bb22fea | 243 | exit(EXIT_FAILURE); |
db425334 S |
244 | } |
245 | } | |
246 | ||
247 | for (i = 0; i < KVP_POOL_COUNT; i++) { | |
248 | fname = kvp_file_info[i].fname; | |
249 | records_read = 0; | |
250 | num_blocks = 1; | |
40424f5f | 251 | sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); |
8467fdbb | 252 | fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */); |
db425334 S |
253 | |
254 | if (fd == -1) | |
255 | return 1; | |
256 | ||
257 | ||
8467fdbb | 258 | filep = fopen(fname, "re"); |
fca59755 TH |
259 | if (!filep) { |
260 | close(fd); | |
db425334 | 261 | return 1; |
fca59755 | 262 | } |
db425334 S |
263 | |
264 | record = malloc(alloc_unit * num_blocks); | |
265 | if (record == NULL) { | |
266 | fclose(filep); | |
fca59755 | 267 | close(fd); |
db425334 S |
268 | return 1; |
269 | } | |
436473bc | 270 | for (;;) { |
db425334 S |
271 | readp = &record[records_read]; |
272 | records_read += fread(readp, sizeof(struct kvp_record), | |
273 | ENTRIES_PER_BLOCK, | |
274 | filep); | |
275 | ||
436473bc BH |
276 | if (ferror(filep)) { |
277 | syslog(LOG_ERR, "Failed to read file, pool: %d", | |
278 | i); | |
279 | exit(EXIT_FAILURE); | |
280 | } | |
281 | ||
db425334 S |
282 | if (!feof(filep)) { |
283 | /* | |
284 | * We have more data to read. | |
285 | */ | |
286 | num_blocks++; | |
287 | record = realloc(record, alloc_unit * | |
288 | num_blocks); | |
289 | if (record == NULL) { | |
290 | fclose(filep); | |
fca59755 | 291 | close(fd); |
db425334 S |
292 | return 1; |
293 | } | |
294 | continue; | |
295 | } | |
296 | break; | |
297 | } | |
298 | kvp_file_info[i].fd = fd; | |
299 | kvp_file_info[i].num_blocks = num_blocks; | |
300 | kvp_file_info[i].records = record; | |
301 | kvp_file_info[i].num_records = records_read; | |
302 | fclose(filep); | |
303 | ||
304 | } | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
69258c05 | 309 | static int kvp_key_delete(int pool, const __u8 *key, int key_size) |
db425334 S |
310 | { |
311 | int i; | |
312 | int j, k; | |
adc80ae6 S |
313 | int num_records; |
314 | struct kvp_record *record; | |
315 | ||
316 | /* | |
317 | * First update the in-memory state. | |
318 | */ | |
319 | kvp_update_mem_state(pool); | |
320 | ||
321 | num_records = kvp_file_info[pool].num_records; | |
322 | record = kvp_file_info[pool].records; | |
db425334 S |
323 | |
324 | for (i = 0; i < num_records; i++) { | |
325 | if (memcmp(key, record[i].key, key_size)) | |
326 | continue; | |
327 | /* | |
328 | * Found a match; just move the remaining | |
329 | * entries up. | |
330 | */ | |
331 | if (i == num_records) { | |
332 | kvp_file_info[pool].num_records--; | |
333 | kvp_update_file(pool); | |
334 | return 0; | |
335 | } | |
336 | ||
337 | j = i; | |
338 | k = j + 1; | |
339 | for (; k < num_records; k++) { | |
340 | strcpy(record[j].key, record[k].key); | |
341 | strcpy(record[j].value, record[k].value); | |
342 | j++; | |
343 | } | |
344 | ||
345 | kvp_file_info[pool].num_records--; | |
346 | kvp_update_file(pool); | |
347 | return 0; | |
348 | } | |
349 | return 1; | |
350 | } | |
351 | ||
69258c05 VK |
352 | static int kvp_key_add_or_modify(int pool, const __u8 *key, int key_size, |
353 | const __u8 *value, int value_size) | |
db425334 S |
354 | { |
355 | int i; | |
adc80ae6 S |
356 | int num_records; |
357 | struct kvp_record *record; | |
358 | int num_blocks; | |
db425334 S |
359 | |
360 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
361 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
362 | return 1; | |
363 | ||
adc80ae6 S |
364 | /* |
365 | * First update the in-memory state. | |
366 | */ | |
367 | kvp_update_mem_state(pool); | |
368 | ||
369 | num_records = kvp_file_info[pool].num_records; | |
370 | record = kvp_file_info[pool].records; | |
371 | num_blocks = kvp_file_info[pool].num_blocks; | |
372 | ||
db425334 S |
373 | for (i = 0; i < num_records; i++) { |
374 | if (memcmp(key, record[i].key, key_size)) | |
375 | continue; | |
376 | /* | |
377 | * Found a match; just update the value - | |
378 | * this is the modify case. | |
379 | */ | |
380 | memcpy(record[i].value, value, value_size); | |
381 | kvp_update_file(pool); | |
382 | return 0; | |
383 | } | |
384 | ||
385 | /* | |
386 | * Need to add a new entry; | |
387 | */ | |
388 | if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { | |
389 | /* Need to allocate a larger array for reg entries. */ | |
390 | record = realloc(record, sizeof(struct kvp_record) * | |
391 | ENTRIES_PER_BLOCK * (num_blocks + 1)); | |
392 | ||
393 | if (record == NULL) | |
394 | return 1; | |
395 | kvp_file_info[pool].num_blocks++; | |
396 | ||
397 | } | |
398 | memcpy(record[i].value, value, value_size); | |
399 | memcpy(record[i].key, key, key_size); | |
400 | kvp_file_info[pool].records = record; | |
401 | kvp_file_info[pool].num_records++; | |
402 | kvp_update_file(pool); | |
403 | return 0; | |
404 | } | |
405 | ||
69258c05 | 406 | static int kvp_get_value(int pool, const __u8 *key, int key_size, __u8 *value, |
db425334 S |
407 | int value_size) |
408 | { | |
409 | int i; | |
adc80ae6 S |
410 | int num_records; |
411 | struct kvp_record *record; | |
db425334 S |
412 | |
413 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
414 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
415 | return 1; | |
416 | ||
adc80ae6 S |
417 | /* |
418 | * First update the in-memory state. | |
419 | */ | |
420 | kvp_update_mem_state(pool); | |
421 | ||
422 | num_records = kvp_file_info[pool].num_records; | |
423 | record = kvp_file_info[pool].records; | |
424 | ||
db425334 S |
425 | for (i = 0; i < num_records; i++) { |
426 | if (memcmp(key, record[i].key, key_size)) | |
427 | continue; | |
428 | /* | |
429 | * Found a match; just copy the value out. | |
430 | */ | |
431 | memcpy(value, record[i].value, value_size); | |
432 | return 0; | |
433 | } | |
434 | ||
435 | return 1; | |
436 | } | |
437 | ||
69258c05 VK |
438 | static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, |
439 | __u8 *value, int value_size) | |
adc80ae6 S |
440 | { |
441 | struct kvp_record *record; | |
442 | ||
443 | /* | |
444 | * First update our in-memory database. | |
445 | */ | |
446 | kvp_update_mem_state(pool); | |
447 | record = kvp_file_info[pool].records; | |
448 | ||
449 | if (index >= kvp_file_info[pool].num_records) { | |
b47a81dc | 450 | return 1; |
adc80ae6 S |
451 | } |
452 | ||
453 | memcpy(key, record[index].key, key_size); | |
454 | memcpy(value, record[index].value, value_size); | |
b47a81dc | 455 | return 0; |
adc80ae6 S |
456 | } |
457 | ||
458 | ||
cc04acf5 KS |
459 | void kvp_get_os_info(void) |
460 | { | |
461 | FILE *file; | |
7989f7d5 | 462 | char *p, buf[512]; |
cc04acf5 | 463 | |
7989f7d5 | 464 | uname(&uts_buf); |
f426a36c S |
465 | os_version = uts_buf.release; |
466 | os_build = strdup(uts_buf.release); | |
467 | ||
44c8b25f | 468 | os_name = uts_buf.sysname; |
064931d0 | 469 | processor_arch = uts_buf.machine; |
cc04acf5 | 470 | |
e54bbc64 S |
471 | /* |
472 | * The current windows host (win7) expects the build | |
473 | * string to be of the form: x.y.z | |
474 | * Strip additional information we may have. | |
475 | */ | |
f426a36c | 476 | p = strchr(os_version, '-'); |
e54bbc64 S |
477 | if (p) |
478 | *p = '\0'; | |
479 | ||
44c8b25f BH |
480 | /* |
481 | * Parse the /etc/os-release file if present: | |
482 | * http://www.freedesktop.org/software/systemd/man/os-release.html | |
483 | */ | |
484 | file = fopen("/etc/os-release", "r"); | |
485 | if (file != NULL) { | |
486 | while (fgets(buf, sizeof(buf), file)) { | |
487 | char *value, *q; | |
488 | ||
489 | /* Ignore comments */ | |
490 | if (buf[0] == '#') | |
491 | continue; | |
492 | ||
493 | /* Split into name=value */ | |
494 | p = strchr(buf, '='); | |
495 | if (!p) | |
496 | continue; | |
497 | *p++ = 0; | |
498 | ||
499 | /* Remove quotes and newline; un-escape */ | |
500 | value = p; | |
501 | q = p; | |
502 | while (*p) { | |
503 | if (*p == '\\') { | |
504 | ++p; | |
505 | if (!*p) | |
506 | break; | |
507 | *q++ = *p++; | |
508 | } else if (*p == '\'' || *p == '"' || | |
509 | *p == '\n') { | |
510 | ++p; | |
511 | } else { | |
512 | *q++ = *p++; | |
513 | } | |
514 | } | |
515 | *q = 0; | |
516 | ||
517 | if (!strcmp(buf, "NAME")) { | |
518 | p = strdup(value); | |
519 | if (!p) | |
520 | break; | |
521 | os_name = p; | |
522 | } else if (!strcmp(buf, "VERSION_ID")) { | |
523 | p = strdup(value); | |
524 | if (!p) | |
525 | break; | |
526 | os_major = p; | |
527 | } | |
528 | } | |
529 | fclose(file); | |
530 | return; | |
531 | } | |
532 | ||
533 | /* Fallback for older RH/SUSE releases */ | |
cc04acf5 KS |
534 | file = fopen("/etc/SuSE-release", "r"); |
535 | if (file != NULL) | |
536 | goto kvp_osinfo_found; | |
537 | file = fopen("/etc/redhat-release", "r"); | |
538 | if (file != NULL) | |
539 | goto kvp_osinfo_found; | |
cc04acf5 KS |
540 | |
541 | /* | |
542 | * We don't have information about the os. | |
543 | */ | |
cc04acf5 KS |
544 | return; |
545 | ||
546 | kvp_osinfo_found: | |
7989f7d5 OH |
547 | /* up to three lines */ |
548 | p = fgets(buf, sizeof(buf), file); | |
549 | if (p) { | |
550 | p = strchr(buf, '\n'); | |
551 | if (p) | |
552 | *p = '\0'; | |
553 | p = strdup(buf); | |
554 | if (!p) | |
555 | goto done; | |
556 | os_name = p; | |
557 | ||
558 | /* second line */ | |
559 | p = fgets(buf, sizeof(buf), file); | |
560 | if (p) { | |
561 | p = strchr(buf, '\n'); | |
562 | if (p) | |
563 | *p = '\0'; | |
564 | p = strdup(buf); | |
565 | if (!p) | |
566 | goto done; | |
567 | os_major = p; | |
568 | ||
569 | /* third line */ | |
570 | p = fgets(buf, sizeof(buf), file); | |
571 | if (p) { | |
572 | p = strchr(buf, '\n'); | |
573 | if (p) | |
574 | *p = '\0'; | |
575 | p = strdup(buf); | |
576 | if (p) | |
577 | os_minor = p; | |
578 | } | |
579 | } | |
580 | } | |
581 | ||
582 | done: | |
cc04acf5 KS |
583 | fclose(file); |
584 | return; | |
585 | } | |
586 | ||
32061b4d S |
587 | |
588 | ||
589 | /* | |
590 | * Retrieve an interface name corresponding to the specified guid. | |
591 | * If there is a match, the function returns a pointer | |
592 | * to the interface name and if not, a NULL is returned. | |
593 | * If a match is found, the caller is responsible for | |
594 | * freeing the memory. | |
595 | */ | |
596 | ||
597 | static char *kvp_get_if_name(char *guid) | |
598 | { | |
599 | DIR *dir; | |
600 | struct dirent *entry; | |
601 | FILE *file; | |
602 | char *p, *q, *x; | |
603 | char *if_name = NULL; | |
604 | char buf[256]; | |
605 | char *kvp_net_dir = "/sys/class/net/"; | |
606 | char dev_id[256]; | |
607 | ||
608 | dir = opendir(kvp_net_dir); | |
609 | if (dir == NULL) | |
610 | return NULL; | |
611 | ||
612 | snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); | |
613 | q = dev_id + strlen(kvp_net_dir); | |
614 | ||
615 | while ((entry = readdir(dir)) != NULL) { | |
616 | /* | |
617 | * Set the state for the next pass. | |
618 | */ | |
619 | *q = '\0'; | |
620 | strcat(dev_id, entry->d_name); | |
621 | strcat(dev_id, "/device/device_id"); | |
622 | ||
623 | file = fopen(dev_id, "r"); | |
624 | if (file == NULL) | |
625 | continue; | |
626 | ||
627 | p = fgets(buf, sizeof(buf), file); | |
628 | if (p) { | |
629 | x = strchr(p, '\n'); | |
630 | if (x) | |
631 | *x = '\0'; | |
632 | ||
633 | if (!strcmp(p, guid)) { | |
634 | /* | |
635 | * Found the guid match; return the interface | |
636 | * name. The caller will free the memory. | |
637 | */ | |
638 | if_name = strdup(entry->d_name); | |
639 | fclose(file); | |
640 | break; | |
641 | } | |
642 | } | |
643 | fclose(file); | |
644 | } | |
645 | ||
646 | closedir(dir); | |
647 | return if_name; | |
648 | } | |
649 | ||
650 | /* | |
651 | * Retrieve the MAC address given the interface name. | |
652 | */ | |
653 | ||
654 | static char *kvp_if_name_to_mac(char *if_name) | |
655 | { | |
656 | FILE *file; | |
657 | char *p, *x; | |
658 | char buf[256]; | |
659 | char addr_file[256]; | |
69258c05 | 660 | unsigned int i; |
32061b4d S |
661 | char *mac_addr = NULL; |
662 | ||
663 | snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", | |
664 | if_name, "/address"); | |
665 | ||
666 | file = fopen(addr_file, "r"); | |
667 | if (file == NULL) | |
668 | return NULL; | |
669 | ||
670 | p = fgets(buf, sizeof(buf), file); | |
671 | if (p) { | |
672 | x = strchr(p, '\n'); | |
673 | if (x) | |
674 | *x = '\0'; | |
675 | for (i = 0; i < strlen(p); i++) | |
676 | p[i] = toupper(p[i]); | |
677 | mac_addr = strdup(p); | |
678 | } | |
679 | ||
680 | fclose(file); | |
681 | return mac_addr; | |
682 | } | |
683 | ||
684 | ||
16e87100 S |
685 | /* |
686 | * Retrieve the interface name given tha MAC address. | |
687 | */ | |
688 | ||
689 | static char *kvp_mac_to_if_name(char *mac) | |
690 | { | |
691 | DIR *dir; | |
692 | struct dirent *entry; | |
693 | FILE *file; | |
694 | char *p, *q, *x; | |
695 | char *if_name = NULL; | |
696 | char buf[256]; | |
697 | char *kvp_net_dir = "/sys/class/net/"; | |
698 | char dev_id[256]; | |
69258c05 | 699 | unsigned int i; |
16e87100 S |
700 | |
701 | dir = opendir(kvp_net_dir); | |
702 | if (dir == NULL) | |
703 | return NULL; | |
704 | ||
705 | snprintf(dev_id, sizeof(dev_id), kvp_net_dir); | |
706 | q = dev_id + strlen(kvp_net_dir); | |
707 | ||
708 | while ((entry = readdir(dir)) != NULL) { | |
709 | /* | |
710 | * Set the state for the next pass. | |
711 | */ | |
712 | *q = '\0'; | |
713 | ||
714 | strcat(dev_id, entry->d_name); | |
715 | strcat(dev_id, "/address"); | |
716 | ||
717 | file = fopen(dev_id, "r"); | |
718 | if (file == NULL) | |
719 | continue; | |
720 | ||
721 | p = fgets(buf, sizeof(buf), file); | |
722 | if (p) { | |
723 | x = strchr(p, '\n'); | |
724 | if (x) | |
725 | *x = '\0'; | |
726 | ||
727 | for (i = 0; i < strlen(p); i++) | |
728 | p[i] = toupper(p[i]); | |
729 | ||
730 | if (!strcmp(p, mac)) { | |
731 | /* | |
732 | * Found the MAC match; return the interface | |
733 | * name. The caller will free the memory. | |
734 | */ | |
735 | if_name = strdup(entry->d_name); | |
736 | fclose(file); | |
737 | break; | |
738 | } | |
739 | } | |
740 | fclose(file); | |
741 | } | |
742 | ||
743 | closedir(dir); | |
744 | return if_name; | |
745 | } | |
746 | ||
747 | ||
4a52c4af | 748 | static void kvp_process_ipconfig_file(char *cmd, |
69258c05 | 749 | char *config_buf, unsigned int len, |
4a52c4af S |
750 | int element_size, int offset) |
751 | { | |
752 | char buf[256]; | |
753 | char *p; | |
754 | char *x; | |
755 | FILE *file; | |
756 | ||
757 | /* | |
758 | * First execute the command. | |
759 | */ | |
760 | file = popen(cmd, "r"); | |
761 | if (file == NULL) | |
762 | return; | |
763 | ||
764 | if (offset == 0) | |
765 | memset(config_buf, 0, len); | |
766 | while ((p = fgets(buf, sizeof(buf), file)) != NULL) { | |
69258c05 | 767 | if (len < strlen(config_buf) + element_size + 1) |
4a52c4af S |
768 | break; |
769 | ||
770 | x = strchr(p, '\n'); | |
f14e600a TH |
771 | if (x) |
772 | *x = '\0'; | |
773 | ||
4a52c4af S |
774 | strcat(config_buf, p); |
775 | strcat(config_buf, ";"); | |
776 | } | |
777 | pclose(file); | |
778 | } | |
779 | ||
780 | static void kvp_get_ipconfig_info(char *if_name, | |
781 | struct hv_kvp_ipaddr_value *buffer) | |
782 | { | |
783 | char cmd[512]; | |
c0503725 S |
784 | char dhcp_info[128]; |
785 | char *p; | |
786 | FILE *file; | |
4a52c4af S |
787 | |
788 | /* | |
789 | * Get the address of default gateway (ipv4). | |
790 | */ | |
791 | sprintf(cmd, "%s %s", "ip route show dev", if_name); | |
792 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
793 | ||
794 | /* | |
795 | * Execute the command to gather gateway info. | |
796 | */ | |
797 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
798 | (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); | |
799 | ||
800 | /* | |
801 | * Get the address of default gateway (ipv6). | |
802 | */ | |
803 | sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); | |
804 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
805 | ||
806 | /* | |
807 | * Execute the command to gather gateway info (ipv6). | |
808 | */ | |
809 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
810 | (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); | |
811 | ||
96929887 S |
812 | |
813 | /* | |
814 | * Gather the DNS state. | |
815 | * Since there is no standard way to get this information | |
816 | * across various distributions of interest; we just invoke | |
817 | * an external script that needs to be ported across distros | |
818 | * of interest. | |
819 | * | |
820 | * Following is the expected format of the information from the script: | |
821 | * | |
822 | * ipaddr1 (nameserver1) | |
823 | * ipaddr2 (nameserver2) | |
824 | * . | |
825 | * . | |
826 | */ | |
827 | ||
828 | sprintf(cmd, "%s", "hv_get_dns_info"); | |
829 | ||
830 | /* | |
831 | * Execute the command to gather DNS info. | |
832 | */ | |
833 | kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, | |
834 | (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); | |
c0503725 S |
835 | |
836 | /* | |
837 | * Gather the DHCP state. | |
838 | * We will gather this state by invoking an external script. | |
839 | * The parameter to the script is the interface name. | |
840 | * Here is the expected output: | |
841 | * | |
842 | * Enabled: DHCP enabled. | |
843 | */ | |
844 | ||
845 | sprintf(cmd, "%s %s", "hv_get_dhcp_info", if_name); | |
846 | ||
847 | file = popen(cmd, "r"); | |
848 | if (file == NULL) | |
849 | return; | |
850 | ||
851 | p = fgets(dhcp_info, sizeof(dhcp_info), file); | |
852 | if (p == NULL) { | |
853 | pclose(file); | |
854 | return; | |
855 | } | |
856 | ||
857 | if (!strncmp(p, "Enabled", 7)) | |
858 | buffer->dhcp_enabled = 1; | |
859 | else | |
860 | buffer->dhcp_enabled = 0; | |
861 | ||
862 | pclose(file); | |
4a52c4af S |
863 | } |
864 | ||
865 | ||
6a60a6a8 S |
866 | static unsigned int hweight32(unsigned int *w) |
867 | { | |
868 | unsigned int res = *w - ((*w >> 1) & 0x55555555); | |
869 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
870 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
871 | res = res + (res >> 8); | |
872 | return (res + (res >> 16)) & 0x000000FF; | |
873 | } | |
874 | ||
af733015 S |
875 | static int kvp_process_ip_address(void *addrp, |
876 | int family, char *buffer, | |
877 | int length, int *offset) | |
878 | { | |
879 | struct sockaddr_in *addr; | |
880 | struct sockaddr_in6 *addr6; | |
881 | int addr_length; | |
882 | char tmp[50]; | |
883 | const char *str; | |
884 | ||
885 | if (family == AF_INET) { | |
886 | addr = (struct sockaddr_in *)addrp; | |
887 | str = inet_ntop(family, &addr->sin_addr, tmp, 50); | |
888 | addr_length = INET_ADDRSTRLEN; | |
889 | } else { | |
890 | addr6 = (struct sockaddr_in6 *)addrp; | |
891 | str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); | |
892 | addr_length = INET6_ADDRSTRLEN; | |
893 | } | |
894 | ||
3321e738 | 895 | if ((length - *offset) < addr_length + 2) |
16e87100 | 896 | return HV_E_FAIL; |
af733015 S |
897 | if (str == NULL) { |
898 | strcpy(buffer, "inet_ntop failed\n"); | |
16e87100 | 899 | return HV_E_FAIL; |
af733015 S |
900 | } |
901 | if (*offset == 0) | |
902 | strcpy(buffer, tmp); | |
3321e738 S |
903 | else { |
904 | strcat(buffer, ";"); | |
af733015 | 905 | strcat(buffer, tmp); |
3321e738 | 906 | } |
af733015 S |
907 | |
908 | *offset += strlen(str) + 1; | |
3321e738 | 909 | |
af733015 S |
910 | return 0; |
911 | } | |
912 | ||
cc04acf5 | 913 | static int |
4a3b97e5 | 914 | kvp_get_ip_info(int family, char *if_name, int op, |
69258c05 | 915 | void *out_buffer, unsigned int length) |
cc04acf5 KS |
916 | { |
917 | struct ifaddrs *ifap; | |
918 | struct ifaddrs *curp; | |
cc04acf5 | 919 | int offset = 0; |
04405784 | 920 | int sn_offset = 0; |
cc04acf5 | 921 | int error = 0; |
0ecaa198 S |
922 | char *buffer; |
923 | struct hv_kvp_ipaddr_value *ip_buffer; | |
6a60a6a8 S |
924 | char cidr_mask[5]; /* /xyz */ |
925 | int weight; | |
926 | int i; | |
927 | unsigned int *w; | |
928 | char *sn_str; | |
929 | struct sockaddr_in6 *addr6; | |
0ecaa198 S |
930 | |
931 | if (op == KVP_OP_ENUMERATE) { | |
932 | buffer = out_buffer; | |
933 | } else { | |
934 | ip_buffer = out_buffer; | |
935 | buffer = (char *)ip_buffer->ip_addr; | |
936 | ip_buffer->addr_family = 0; | |
937 | } | |
cc04acf5 KS |
938 | /* |
939 | * On entry into this function, the buffer is capable of holding the | |
0ecaa198 | 940 | * maximum key value. |
cc04acf5 KS |
941 | */ |
942 | ||
943 | if (getifaddrs(&ifap)) { | |
944 | strcpy(buffer, "getifaddrs failed\n"); | |
16e87100 | 945 | return HV_E_FAIL; |
cc04acf5 KS |
946 | } |
947 | ||
948 | curp = ifap; | |
949 | while (curp != NULL) { | |
0ecaa198 S |
950 | if (curp->ifa_addr == NULL) { |
951 | curp = curp->ifa_next; | |
952 | continue; | |
953 | } | |
cc04acf5 | 954 | |
0ecaa198 S |
955 | if ((if_name != NULL) && |
956 | (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { | |
957 | /* | |
958 | * We want info about a specific interface; | |
959 | * just continue. | |
960 | */ | |
961 | curp = curp->ifa_next; | |
962 | continue; | |
963 | } | |
cc04acf5 | 964 | |
0ecaa198 S |
965 | /* |
966 | * We only support two address families: AF_INET and AF_INET6. | |
967 | * If a family value of 0 is specified, we collect both | |
968 | * supported address families; if not we gather info on | |
969 | * the specified address family. | |
970 | */ | |
3321e738 S |
971 | if ((((family != 0) && |
972 | (curp->ifa_addr->sa_family != family))) || | |
973 | (curp->ifa_flags & IFF_LOOPBACK)) { | |
0ecaa198 S |
974 | curp = curp->ifa_next; |
975 | continue; | |
976 | } | |
977 | if ((curp->ifa_addr->sa_family != AF_INET) && | |
978 | (curp->ifa_addr->sa_family != AF_INET6)) { | |
979 | curp = curp->ifa_next; | |
980 | continue; | |
981 | } | |
982 | ||
0d5b6b19 S |
983 | if (op == KVP_OP_GET_IP_INFO) { |
984 | /* | |
985 | * Gather info other than the IP address. | |
986 | * IP address info will be gathered later. | |
987 | */ | |
04405784 | 988 | if (curp->ifa_addr->sa_family == AF_INET) { |
0d5b6b19 | 989 | ip_buffer->addr_family |= ADDR_FAMILY_IPV4; |
04405784 S |
990 | /* |
991 | * Get subnet info. | |
992 | */ | |
993 | error = kvp_process_ip_address( | |
994 | curp->ifa_netmask, | |
995 | AF_INET, | |
996 | (char *) | |
997 | ip_buffer->sub_net, | |
998 | length, | |
999 | &sn_offset); | |
1000 | if (error) | |
1001 | goto gather_ipaddr; | |
1002 | } else { | |
0d5b6b19 | 1003 | ip_buffer->addr_family |= ADDR_FAMILY_IPV6; |
6a60a6a8 | 1004 | |
04405784 | 1005 | /* |
6a60a6a8 | 1006 | * Get subnet info in CIDR format. |
04405784 | 1007 | */ |
6a60a6a8 S |
1008 | weight = 0; |
1009 | sn_str = (char *)ip_buffer->sub_net; | |
1010 | addr6 = (struct sockaddr_in6 *) | |
1011 | curp->ifa_netmask; | |
1012 | w = addr6->sin6_addr.s6_addr32; | |
1013 | ||
1014 | for (i = 0; i < 4; i++) | |
1015 | weight += hweight32(&w[i]); | |
1016 | ||
1017 | sprintf(cidr_mask, "/%d", weight); | |
69258c05 | 1018 | if (length < sn_offset + strlen(cidr_mask) + 1) |
04405784 | 1019 | goto gather_ipaddr; |
6a60a6a8 S |
1020 | |
1021 | if (sn_offset == 0) | |
1022 | strcpy(sn_str, cidr_mask); | |
ed4bb974 S |
1023 | else { |
1024 | strcat((char *)ip_buffer->sub_net, ";"); | |
6a60a6a8 | 1025 | strcat(sn_str, cidr_mask); |
ed4bb974 | 1026 | } |
6a60a6a8 | 1027 | sn_offset += strlen(sn_str) + 1; |
04405784 | 1028 | } |
4a52c4af S |
1029 | |
1030 | /* | |
1031 | * Collect other ip related configuration info. | |
1032 | */ | |
1033 | ||
1034 | kvp_get_ipconfig_info(if_name, ip_buffer); | |
0d5b6b19 S |
1035 | } |
1036 | ||
04405784 | 1037 | gather_ipaddr: |
af733015 S |
1038 | error = kvp_process_ip_address(curp->ifa_addr, |
1039 | curp->ifa_addr->sa_family, | |
1040 | buffer, | |
1041 | length, &offset); | |
1042 | if (error) | |
1043 | goto getaddr_done; | |
0ecaa198 | 1044 | |
cc04acf5 KS |
1045 | curp = curp->ifa_next; |
1046 | } | |
1047 | ||
1048 | getaddr_done: | |
1049 | freeifaddrs(ifap); | |
1050 | return error; | |
1051 | } | |
1052 | ||
1053 | ||
32061b4d S |
1054 | static int expand_ipv6(char *addr, int type) |
1055 | { | |
1056 | int ret; | |
1057 | struct in6_addr v6_addr; | |
1058 | ||
1059 | ret = inet_pton(AF_INET6, addr, &v6_addr); | |
1060 | ||
1061 | if (ret != 1) { | |
1062 | if (type == NETMASK) | |
1063 | return 1; | |
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" | |
1068 | "%02x%02x:%02x%02x:%02x%02x", | |
1069 | (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], | |
1070 | (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], | |
1071 | (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], | |
1072 | (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], | |
1073 | (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], | |
1074 | (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], | |
1075 | (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], | |
1076 | (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); | |
1077 | ||
1078 | return 1; | |
1079 | ||
1080 | } | |
1081 | ||
1082 | static int is_ipv4(char *addr) | |
1083 | { | |
1084 | int ret; | |
1085 | struct in_addr ipv4_addr; | |
1086 | ||
1087 | ret = inet_pton(AF_INET, addr, &ipv4_addr); | |
1088 | ||
1089 | if (ret == 1) | |
1090 | return 1; | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | static int parse_ip_val_buffer(char *in_buf, int *offset, | |
1095 | char *out_buf, int out_len) | |
1096 | { | |
1097 | char *x; | |
1098 | char *start; | |
1099 | ||
1100 | /* | |
1101 | * in_buf has sequence of characters that are seperated by | |
1102 | * the character ';'. The last sequence does not have the | |
1103 | * terminating ";" character. | |
1104 | */ | |
1105 | start = in_buf + *offset; | |
1106 | ||
1107 | x = strchr(start, ';'); | |
1108 | if (x) | |
1109 | *x = 0; | |
1110 | else | |
1111 | x = start + strlen(start); | |
1112 | ||
1113 | if (strlen(start) != 0) { | |
1114 | int i = 0; | |
1115 | /* | |
1116 | * Get rid of leading spaces. | |
1117 | */ | |
1118 | while (start[i] == ' ') | |
1119 | i++; | |
1120 | ||
1121 | if ((x - start) <= out_len) { | |
1122 | strcpy(out_buf, (start + i)); | |
1123 | *offset += (x - start) + 1; | |
1124 | return 1; | |
1125 | } | |
1126 | } | |
1127 | return 0; | |
1128 | } | |
1129 | ||
1130 | static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) | |
1131 | { | |
1132 | int ret; | |
1133 | ||
1134 | ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); | |
1135 | ||
1136 | if (ret < 0) | |
1137 | return HV_E_FAIL; | |
1138 | ||
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | ||
1143 | static int process_ip_string(FILE *f, char *ip_string, int type) | |
1144 | { | |
1145 | int error = 0; | |
1146 | char addr[INET6_ADDRSTRLEN]; | |
1147 | int i = 0; | |
1148 | int j = 0; | |
1149 | char str[256]; | |
1150 | char sub_str[10]; | |
1151 | int offset = 0; | |
1152 | ||
1153 | memset(addr, 0, sizeof(addr)); | |
1154 | ||
1155 | while (parse_ip_val_buffer(ip_string, &offset, addr, | |
1156 | (MAX_IP_ADDR_SIZE * 2))) { | |
1157 | ||
1158 | sub_str[0] = 0; | |
1159 | if (is_ipv4(addr)) { | |
1160 | switch (type) { | |
1161 | case IPADDR: | |
1162 | snprintf(str, sizeof(str), "%s", "IPADDR"); | |
1163 | break; | |
1164 | case NETMASK: | |
1165 | snprintf(str, sizeof(str), "%s", "NETMASK"); | |
1166 | break; | |
1167 | case GATEWAY: | |
1168 | snprintf(str, sizeof(str), "%s", "GATEWAY"); | |
1169 | break; | |
1170 | case DNS: | |
1171 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1172 | break; | |
1173 | } | |
0783d72f TH |
1174 | |
1175 | if (type == DNS) { | |
32061b4d | 1176 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); |
0783d72f TH |
1177 | } else if (type == GATEWAY && i == 0) { |
1178 | ++i; | |
1179 | } else { | |
1180 | snprintf(sub_str, sizeof(sub_str), "%d", i++); | |
32061b4d S |
1181 | } |
1182 | ||
1183 | ||
1184 | } else if (expand_ipv6(addr, type)) { | |
1185 | switch (type) { | |
1186 | case IPADDR: | |
1187 | snprintf(str, sizeof(str), "%s", "IPV6ADDR"); | |
1188 | break; | |
1189 | case NETMASK: | |
1190 | snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); | |
1191 | break; | |
1192 | case GATEWAY: | |
1193 | snprintf(str, sizeof(str), "%s", | |
1194 | "IPV6_DEFAULTGW"); | |
1195 | break; | |
1196 | case DNS: | |
1197 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1198 | break; | |
1199 | } | |
0783d72f TH |
1200 | |
1201 | if (type == DNS) { | |
1202 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); | |
1203 | } else if (j == 0) { | |
1204 | ++j; | |
1205 | } else { | |
1206 | snprintf(sub_str, sizeof(sub_str), "_%d", j++); | |
32061b4d S |
1207 | } |
1208 | } else { | |
1209 | return HV_INVALIDARG; | |
1210 | } | |
1211 | ||
1212 | error = kvp_write_file(f, str, sub_str, addr); | |
1213 | if (error) | |
1214 | return error; | |
1215 | memset(addr, 0, sizeof(addr)); | |
1216 | } | |
1217 | ||
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) | |
1222 | { | |
1223 | int error = 0; | |
1224 | char if_file[128]; | |
1225 | FILE *file; | |
1226 | char cmd[512]; | |
1227 | char *mac_addr; | |
1228 | ||
1229 | /* | |
1230 | * Set the configuration for the specified interface with | |
1231 | * the information provided. Since there is no standard | |
1232 | * way to configure an interface, we will have an external | |
1233 | * script that does the job of configuring the interface and | |
1234 | * flushing the configuration. | |
1235 | * | |
1236 | * The parameters passed to this external script are: | |
1237 | * 1. A configuration file that has the specified configuration. | |
1238 | * | |
1239 | * We will embed the name of the interface in the configuration | |
1240 | * file: ifcfg-ethx (where ethx is the interface name). | |
1241 | * | |
1242 | * The information provided here may be more than what is needed | |
1243 | * in a given distro to configure the interface and so are free | |
1244 | * ignore information that may not be relevant. | |
1245 | * | |
1246 | * Here is the format of the ip configuration file: | |
1247 | * | |
1248 | * HWADDR=macaddr | |
0783d72f TH |
1249 | * DEVICE=interface name |
1250 | * BOOTPROTO=<protocol> (where <protocol> is "dhcp" if DHCP is configured | |
1251 | * or "none" if no boot-time protocol should be used) | |
32061b4d | 1252 | * |
0783d72f TH |
1253 | * IPADDR0=ipaddr1 |
1254 | * IPADDR1=ipaddr2 | |
1255 | * IPADDRx=ipaddry (where y = x + 1) | |
32061b4d | 1256 | * |
0783d72f TH |
1257 | * NETMASK0=netmask1 |
1258 | * NETMASKx=netmasky (where y = x + 1) | |
32061b4d S |
1259 | * |
1260 | * GATEWAY=ipaddr1 | |
0783d72f | 1261 | * GATEWAYx=ipaddry (where y = x + 1) |
32061b4d S |
1262 | * |
1263 | * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) | |
1264 | * | |
1265 | * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be | |
1266 | * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as | |
1267 | * IPV6NETMASK. | |
1268 | * | |
1269 | * The host can specify multiple ipv4 and ipv6 addresses to be | |
1270 | * configured for the interface. Furthermore, the configuration | |
1271 | * needs to be persistent. A subsequent GET call on the interface | |
1272 | * is expected to return the configuration that is set via the SET | |
1273 | * call. | |
1274 | */ | |
1275 | ||
1276 | snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, | |
40424f5f | 1277 | "/ifcfg-", if_name); |
32061b4d S |
1278 | |
1279 | file = fopen(if_file, "w"); | |
1280 | ||
1281 | if (file == NULL) { | |
12e50c30 TH |
1282 | syslog(LOG_ERR, "Failed to open config file; error: %d %s", |
1283 | errno, strerror(errno)); | |
32061b4d S |
1284 | return HV_E_FAIL; |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * First write out the MAC address. | |
1289 | */ | |
1290 | ||
1291 | mac_addr = kvp_if_name_to_mac(if_name); | |
1292 | if (mac_addr == NULL) { | |
1293 | error = HV_E_FAIL; | |
1294 | goto setval_error; | |
1295 | } | |
1296 | ||
1297 | error = kvp_write_file(file, "HWADDR", "", mac_addr); | |
57969af0 | 1298 | free(mac_addr); |
32061b4d S |
1299 | if (error) |
1300 | goto setval_error; | |
1301 | ||
0783d72f | 1302 | error = kvp_write_file(file, "DEVICE", "", if_name); |
32061b4d S |
1303 | if (error) |
1304 | goto setval_error; | |
1305 | ||
787d6182 DC |
1306 | /* |
1307 | * The dhcp_enabled flag is only for IPv4. In the case the host only | |
1308 | * injects an IPv6 address, the flag is true, but we still need to | |
1309 | * proceed to parse and pass the IPv6 information to the | |
1310 | * disto-specific script hv_set_ifconfig. | |
1311 | */ | |
32061b4d | 1312 | if (new_val->dhcp_enabled) { |
0783d72f | 1313 | error = kvp_write_file(file, "BOOTPROTO", "", "dhcp"); |
32061b4d S |
1314 | if (error) |
1315 | goto setval_error; | |
1316 | ||
0783d72f TH |
1317 | } else { |
1318 | error = kvp_write_file(file, "BOOTPROTO", "", "none"); | |
1319 | if (error) | |
1320 | goto setval_error; | |
32061b4d S |
1321 | } |
1322 | ||
1323 | /* | |
1324 | * Write the configuration for ipaddress, netmask, gateway and | |
1325 | * name servers. | |
1326 | */ | |
1327 | ||
1328 | error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); | |
1329 | if (error) | |
1330 | goto setval_error; | |
1331 | ||
1332 | error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); | |
1333 | if (error) | |
1334 | goto setval_error; | |
1335 | ||
1336 | error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); | |
1337 | if (error) | |
1338 | goto setval_error; | |
1339 | ||
1340 | error = process_ip_string(file, (char *)new_val->dns_addr, DNS); | |
1341 | if (error) | |
1342 | goto setval_error; | |
1343 | ||
32061b4d S |
1344 | fclose(file); |
1345 | ||
1346 | /* | |
1347 | * Now that we have populated the configuration file, | |
1348 | * invoke the external script to do its magic. | |
1349 | */ | |
1350 | ||
1351 | snprintf(cmd, sizeof(cmd), "%s %s", "hv_set_ifconfig", if_file); | |
d3b688c6 OH |
1352 | if (system(cmd)) { |
1353 | syslog(LOG_ERR, "Failed to execute cmd '%s'; error: %d %s", | |
1354 | cmd, errno, strerror(errno)); | |
1355 | return HV_E_FAIL; | |
1356 | } | |
32061b4d S |
1357 | return 0; |
1358 | ||
1359 | setval_error: | |
1360 | syslog(LOG_ERR, "Failed to write config file"); | |
32061b4d S |
1361 | fclose(file); |
1362 | return error; | |
1363 | } | |
1364 | ||
1365 | ||
58125210 | 1366 | static void |
cc04acf5 KS |
1367 | kvp_get_domain_name(char *buffer, int length) |
1368 | { | |
1369 | struct addrinfo hints, *info ; | |
cc04acf5 KS |
1370 | int error = 0; |
1371 | ||
5be528c2 | 1372 | gethostname(buffer, length); |
cc04acf5 KS |
1373 | memset(&hints, 0, sizeof(hints)); |
1374 | hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ | |
1375 | hints.ai_socktype = SOCK_STREAM; | |
1376 | hints.ai_flags = AI_CANONNAME; | |
1377 | ||
5be528c2 | 1378 | error = getaddrinfo(buffer, NULL, &hints, &info); |
cc04acf5 | 1379 | if (error != 0) { |
58125210 OH |
1380 | snprintf(buffer, length, "getaddrinfo failed: 0x%x %s", |
1381 | error, gai_strerror(error)); | |
1382 | return; | |
cc04acf5 | 1383 | } |
58125210 | 1384 | snprintf(buffer, length, "%s", info->ai_canonname); |
cc04acf5 | 1385 | freeaddrinfo(info); |
cc04acf5 KS |
1386 | } |
1387 | ||
170f4bea VK |
1388 | void print_usage(char *argv[]) |
1389 | { | |
1390 | fprintf(stderr, "Usage: %s [options]\n" | |
1391 | "Options are:\n" | |
1392 | " -n, --no-daemon stay in foreground, don't daemonize\n" | |
1393 | " -h, --help print this help\n", argv[0]); | |
1394 | } | |
1395 | ||
1396 | int main(int argc, char *argv[]) | |
cc04acf5 | 1397 | { |
8ddca808 | 1398 | int kvp_fd, len; |
cc04acf5 | 1399 | int error; |
cc04acf5 | 1400 | struct pollfd pfd; |
8ddca808 VK |
1401 | char *p; |
1402 | struct hv_kvp_msg hv_msg[1]; | |
cc04acf5 KS |
1403 | char *key_value; |
1404 | char *key_name; | |
b47a81dc S |
1405 | int op; |
1406 | int pool; | |
32061b4d S |
1407 | char *if_name; |
1408 | struct hv_kvp_ipaddr_value *kvp_ip_val; | |
170f4bea VK |
1409 | int daemonize = 1, long_index = 0, opt; |
1410 | ||
1411 | static struct option long_options[] = { | |
1412 | {"help", no_argument, 0, 'h' }, | |
1413 | {"no-daemon", no_argument, 0, 'n' }, | |
1414 | {0, 0, 0, 0 } | |
1415 | }; | |
1416 | ||
1417 | while ((opt = getopt_long(argc, argv, "hn", long_options, | |
1418 | &long_index)) != -1) { | |
1419 | switch (opt) { | |
1420 | case 'n': | |
1421 | daemonize = 0; | |
1422 | break; | |
1423 | case 'h': | |
1424 | default: | |
1425 | print_usage(argv); | |
1426 | exit(EXIT_FAILURE); | |
1427 | } | |
1428 | } | |
cc04acf5 | 1429 | |
170f4bea | 1430 | if (daemonize && daemon(1, 0)) |
00663d73 | 1431 | return 1; |
170f4bea | 1432 | |
cc04acf5 KS |
1433 | openlog("KVP", 0, LOG_USER); |
1434 | syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); | |
b4919a5f | 1435 | |
8ddca808 VK |
1436 | kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR); |
1437 | ||
1438 | if (kvp_fd < 0) { | |
1439 | syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s", | |
1440 | errno, strerror(errno)); | |
b4919a5f OH |
1441 | exit(EXIT_FAILURE); |
1442 | } | |
8ddca808 | 1443 | |
cc04acf5 KS |
1444 | /* |
1445 | * Retrieve OS release information. | |
1446 | */ | |
1447 | kvp_get_os_info(); | |
58125210 OH |
1448 | /* |
1449 | * Cache Fully Qualified Domain Name because getaddrinfo takes an | |
1450 | * unpredictable amount of time to finish. | |
1451 | */ | |
1452 | kvp_get_domain_name(full_domain_name, sizeof(full_domain_name)); | |
cc04acf5 | 1453 | |
db425334 S |
1454 | if (kvp_file_init()) { |
1455 | syslog(LOG_ERR, "Failed to initialize the pools"); | |
6bb22fea | 1456 | exit(EXIT_FAILURE); |
db425334 S |
1457 | } |
1458 | ||
cc04acf5 KS |
1459 | /* |
1460 | * Register ourselves with the kernel. | |
1461 | */ | |
b47a81dc | 1462 | hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; |
8ddca808 VK |
1463 | len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); |
1464 | if (len != sizeof(struct hv_kvp_msg)) { | |
1465 | syslog(LOG_ERR, "registration to kernel failed; error: %d %s", | |
1466 | errno, strerror(errno)); | |
1467 | close(kvp_fd); | |
6bb22fea | 1468 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1469 | } |
1470 | ||
8ddca808 | 1471 | pfd.fd = kvp_fd; |
cc04acf5 KS |
1472 | |
1473 | while (1) { | |
1474 | pfd.events = POLLIN; | |
1475 | pfd.revents = 0; | |
4d81e307 TH |
1476 | |
1477 | if (poll(&pfd, 1, -1) < 0) { | |
1478 | syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno)); | |
1479 | if (errno == EINVAL) { | |
8ddca808 | 1480 | close(kvp_fd); |
4d81e307 TH |
1481 | exit(EXIT_FAILURE); |
1482 | } | |
1483 | else | |
1484 | continue; | |
1485 | } | |
cc04acf5 | 1486 | |
8ddca808 | 1487 | len = read(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); |
4300f264 | 1488 | |
8ddca808 VK |
1489 | if (len != sizeof(struct hv_kvp_msg)) { |
1490 | syslog(LOG_ERR, "read failed; error:%d %s", | |
1491 | errno, strerror(errno)); | |
4300f264 | 1492 | |
8ddca808 VK |
1493 | close(kvp_fd); |
1494 | return EXIT_FAILURE; | |
cc04acf5 KS |
1495 | } |
1496 | ||
b47a81dc S |
1497 | /* |
1498 | * We will use the KVP header information to pass back | |
1499 | * the error from this daemon. So, first copy the state | |
1500 | * and set the error code to success. | |
1501 | */ | |
1502 | op = hv_msg->kvp_hdr.operation; | |
1503 | pool = hv_msg->kvp_hdr.pool; | |
1504 | hv_msg->error = HV_S_OK; | |
1505 | ||
1506 | if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { | |
cc04acf5 KS |
1507 | /* |
1508 | * Driver is registering with us; stash away the version | |
1509 | * information. | |
1510 | */ | |
b47a81dc | 1511 | in_hand_shake = 0; |
e485ceac | 1512 | p = (char *)hv_msg->body.kvp_register.version; |
7989f7d5 | 1513 | lic_version = malloc(strlen(p) + 1); |
cc04acf5 | 1514 | if (lic_version) { |
7989f7d5 | 1515 | strcpy(lic_version, p); |
cc04acf5 | 1516 | syslog(LOG_INFO, "KVP LIC Version: %s", |
8ddca808 | 1517 | lic_version); |
cc04acf5 KS |
1518 | } else { |
1519 | syslog(LOG_ERR, "malloc failed"); | |
1520 | } | |
1521 | continue; | |
b47a81dc | 1522 | } |
cc04acf5 | 1523 | |
b47a81dc | 1524 | switch (op) { |
16e87100 S |
1525 | case KVP_OP_GET_IP_INFO: |
1526 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1527 | if_name = | |
1528 | kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); | |
1529 | ||
1530 | if (if_name == NULL) { | |
1531 | /* | |
1532 | * We could not map the mac address to an | |
1533 | * interface name; return error. | |
1534 | */ | |
1535 | hv_msg->error = HV_E_FAIL; | |
1536 | break; | |
1537 | } | |
1538 | error = kvp_get_ip_info( | |
1539 | 0, if_name, KVP_OP_GET_IP_INFO, | |
1540 | kvp_ip_val, | |
1541 | (MAX_IP_ADDR_SIZE * 2)); | |
1542 | ||
1543 | if (error) | |
1544 | hv_msg->error = error; | |
1545 | ||
1546 | free(if_name); | |
1547 | break; | |
1548 | ||
32061b4d S |
1549 | case KVP_OP_SET_IP_INFO: |
1550 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1551 | if_name = kvp_get_if_name( | |
1552 | (char *)kvp_ip_val->adapter_id); | |
1553 | if (if_name == NULL) { | |
1554 | /* | |
1555 | * We could not map the guid to an | |
1556 | * interface name; return error. | |
1557 | */ | |
1558 | hv_msg->error = HV_GUID_NOTFOUND; | |
1559 | break; | |
1560 | } | |
1561 | error = kvp_set_ip_info(if_name, kvp_ip_val); | |
1562 | if (error) | |
1563 | hv_msg->error = error; | |
1564 | ||
1565 | free(if_name); | |
1566 | break; | |
1567 | ||
fa3d5b85 | 1568 | case KVP_OP_SET: |
b47a81dc | 1569 | if (kvp_key_add_or_modify(pool, |
db425334 S |
1570 | hv_msg->body.kvp_set.data.key, |
1571 | hv_msg->body.kvp_set.data.key_size, | |
1572 | hv_msg->body.kvp_set.data.value, | |
1573 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1574 | hv_msg->error = HV_S_CONT; |
db425334 S |
1575 | break; |
1576 | ||
fa3d5b85 | 1577 | case KVP_OP_GET: |
b47a81dc | 1578 | if (kvp_get_value(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_DELETE: |
b47a81dc | 1587 | if (kvp_key_delete(pool, |
db425334 S |
1588 | hv_msg->body.kvp_delete.key, |
1589 | hv_msg->body.kvp_delete.key_size)) | |
b47a81dc | 1590 | hv_msg->error = HV_S_CONT; |
db425334 S |
1591 | break; |
1592 | ||
cc04acf5 | 1593 | default: |
26403354 | 1594 | break; |
cc04acf5 KS |
1595 | } |
1596 | ||
b47a81dc | 1597 | if (op != KVP_OP_ENUMERATE) |
fa3d5b85 S |
1598 | goto kvp_done; |
1599 | ||
adc80ae6 S |
1600 | /* |
1601 | * If the pool is KVP_POOL_AUTO, dynamically generate | |
1602 | * both the key and the value; if not read from the | |
1603 | * appropriate pool. | |
1604 | */ | |
b47a81dc S |
1605 | if (pool != KVP_POOL_AUTO) { |
1606 | if (kvp_pool_enumerate(pool, | |
adc80ae6 S |
1607 | hv_msg->body.kvp_enum_data.index, |
1608 | hv_msg->body.kvp_enum_data.data.key, | |
1609 | HV_KVP_EXCHANGE_MAX_KEY_SIZE, | |
1610 | hv_msg->body.kvp_enum_data.data.value, | |
b47a81dc S |
1611 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
1612 | hv_msg->error = HV_S_CONT; | |
adc80ae6 S |
1613 | goto kvp_done; |
1614 | } | |
1615 | ||
26403354 S |
1616 | key_name = (char *)hv_msg->body.kvp_enum_data.data.key; |
1617 | key_value = (char *)hv_msg->body.kvp_enum_data.data.value; | |
cc04acf5 | 1618 | |
26403354 | 1619 | switch (hv_msg->body.kvp_enum_data.index) { |
cc04acf5 | 1620 | case FullyQualifiedDomainName: |
58125210 | 1621 | strcpy(key_value, full_domain_name); |
cc04acf5 KS |
1622 | strcpy(key_name, "FullyQualifiedDomainName"); |
1623 | break; | |
1624 | case IntegrationServicesVersion: | |
1625 | strcpy(key_name, "IntegrationServicesVersion"); | |
1626 | strcpy(key_value, lic_version); | |
1627 | break; | |
1628 | case NetworkAddressIPv4: | |
4a3b97e5 | 1629 | kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1630 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1631 | strcpy(key_name, "NetworkAddressIPv4"); |
1632 | break; | |
1633 | case NetworkAddressIPv6: | |
4a3b97e5 | 1634 | kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1635 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1636 | strcpy(key_name, "NetworkAddressIPv6"); |
1637 | break; | |
1638 | case OSBuildNumber: | |
1639 | strcpy(key_value, os_build); | |
1640 | strcpy(key_name, "OSBuildNumber"); | |
1641 | break; | |
1642 | case OSName: | |
1643 | strcpy(key_value, os_name); | |
1644 | strcpy(key_name, "OSName"); | |
1645 | break; | |
1646 | case OSMajorVersion: | |
1647 | strcpy(key_value, os_major); | |
1648 | strcpy(key_name, "OSMajorVersion"); | |
1649 | break; | |
1650 | case OSMinorVersion: | |
1651 | strcpy(key_value, os_minor); | |
1652 | strcpy(key_name, "OSMinorVersion"); | |
1653 | break; | |
1654 | case OSVersion: | |
f426a36c | 1655 | strcpy(key_value, os_version); |
cc04acf5 KS |
1656 | strcpy(key_name, "OSVersion"); |
1657 | break; | |
1658 | case ProcessorArchitecture: | |
1659 | strcpy(key_value, processor_arch); | |
1660 | strcpy(key_name, "ProcessorArchitecture"); | |
1661 | break; | |
1662 | default: | |
b47a81dc | 1663 | hv_msg->error = HV_S_CONT; |
cc04acf5 KS |
1664 | break; |
1665 | } | |
4300f264 | 1666 | |
8ddca808 VK |
1667 | /* Send the value back to the kernel. */ |
1668 | kvp_done: | |
1669 | len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); | |
1670 | if (len != sizeof(struct hv_kvp_msg)) { | |
1671 | syslog(LOG_ERR, "write failed; error: %d %s", errno, | |
1672 | strerror(errno)); | |
6bb22fea | 1673 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1674 | } |
1675 | } | |
1676 | ||
8ddca808 VK |
1677 | close(kvp_fd); |
1678 | exit(0); | |
cc04acf5 | 1679 | } |