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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 | ||
cc04acf5 KS |
25 | #include <sys/poll.h> |
26 | #include <sys/utsname.h> | |
cc04acf5 KS |
27 | #include <stdio.h> |
28 | #include <stdlib.h> | |
29 | #include <unistd.h> | |
30 | #include <string.h> | |
32061b4d | 31 | #include <ctype.h> |
cc04acf5 KS |
32 | #include <errno.h> |
33 | #include <arpa/inet.h> | |
eab6af71 | 34 | #include <linux/hyperv.h> |
cc04acf5 KS |
35 | #include <ifaddrs.h> |
36 | #include <netdb.h> | |
37 | #include <syslog.h> | |
db425334 S |
38 | #include <sys/stat.h> |
39 | #include <fcntl.h> | |
32061b4d | 40 | #include <dirent.h> |
3321e738 | 41 | #include <net/if.h> |
170f4bea | 42 | #include <getopt.h> |
cc04acf5 KS |
43 | |
44 | /* | |
45 | * KVP protocol: The user mode component first registers with the | |
46 | * the kernel component. Subsequently, the kernel component requests, data | |
47 | * for the specified keys. In response to this message the user mode component | |
48 | * fills in the value corresponding to the specified key. We overload the | |
49 | * sequence field in the cn_msg header to define our KVP message types. | |
50 | * | |
51 | * We use this infrastructure for also supporting queries from user mode | |
52 | * application for state that may be maintained in the KVP kernel component. | |
53 | * | |
cc04acf5 KS |
54 | */ |
55 | ||
cc04acf5 KS |
56 | |
57 | enum key_index { | |
58 | FullyQualifiedDomainName = 0, | |
59 | IntegrationServicesVersion, /*This key is serviced in the kernel*/ | |
60 | NetworkAddressIPv4, | |
61 | NetworkAddressIPv6, | |
62 | OSBuildNumber, | |
63 | OSName, | |
64 | OSMajorVersion, | |
65 | OSMinorVersion, | |
66 | OSVersion, | |
67 | ProcessorArchitecture | |
68 | }; | |
69 | ||
32061b4d S |
70 | |
71 | enum { | |
72 | IPADDR = 0, | |
73 | NETMASK, | |
74 | GATEWAY, | |
75 | DNS | |
76 | }; | |
77 | ||
b47a81dc | 78 | static int in_hand_shake = 1; |
cc04acf5 | 79 | |
7989f7d5 OH |
80 | static char *os_name = ""; |
81 | static char *os_major = ""; | |
82 | static char *os_minor = ""; | |
83 | static char *processor_arch; | |
84 | static char *os_build; | |
f426a36c | 85 | static char *os_version; |
b47a81dc | 86 | static char *lic_version = "Unknown version"; |
58125210 | 87 | static char full_domain_name[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; |
7989f7d5 | 88 | static struct utsname uts_buf; |
cc04acf5 | 89 | |
32061b4d S |
90 | /* |
91 | * The location of the interface configuration file. | |
92 | */ | |
93 | ||
40424f5f | 94 | #define KVP_CONFIG_LOC "/var/lib/hyperv" |
db425334 | 95 | |
2eb72d4b AF |
96 | #ifndef KVP_SCRIPTS_PATH |
97 | #define KVP_SCRIPTS_PATH "/usr/libexec/hypervkvpd/" | |
98 | #endif | |
99 | ||
db425334 S |
100 | #define MAX_FILE_NAME 100 |
101 | #define ENTRIES_PER_BLOCK 50 | |
102 | ||
103 | struct kvp_record { | |
d0cbc156 S |
104 | char key[HV_KVP_EXCHANGE_MAX_KEY_SIZE]; |
105 | char value[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; | |
db425334 S |
106 | }; |
107 | ||
108 | struct kvp_file_state { | |
109 | int fd; | |
110 | int num_blocks; | |
111 | struct kvp_record *records; | |
112 | int num_records; | |
d0cbc156 | 113 | char fname[MAX_FILE_NAME]; |
db425334 S |
114 | }; |
115 | ||
116 | static struct kvp_file_state kvp_file_info[KVP_POOL_COUNT]; | |
117 | ||
118 | static void kvp_acquire_lock(int pool) | |
119 | { | |
120 | struct flock fl = {F_WRLCK, SEEK_SET, 0, 0, 0}; | |
121 | fl.l_pid = getpid(); | |
122 | ||
123 | if (fcntl(kvp_file_info[pool].fd, F_SETLKW, &fl) == -1) { | |
12e50c30 TH |
124 | syslog(LOG_ERR, "Failed to acquire the lock pool: %d; error: %d %s", pool, |
125 | errno, strerror(errno)); | |
6bb22fea | 126 | exit(EXIT_FAILURE); |
db425334 S |
127 | } |
128 | } | |
129 | ||
130 | static void kvp_release_lock(int pool) | |
131 | { | |
132 | struct flock fl = {F_UNLCK, SEEK_SET, 0, 0, 0}; | |
133 | fl.l_pid = getpid(); | |
134 | ||
135 | if (fcntl(kvp_file_info[pool].fd, F_SETLK, &fl) == -1) { | |
12e50c30 TH |
136 | syslog(LOG_ERR, "Failed to release the lock pool: %d; error: %d %s", pool, |
137 | errno, strerror(errno)); | |
6bb22fea | 138 | exit(EXIT_FAILURE); |
db425334 S |
139 | } |
140 | } | |
141 | ||
142 | static void kvp_update_file(int pool) | |
143 | { | |
144 | FILE *filep; | |
db425334 S |
145 | |
146 | /* | |
147 | * We are going to write our in-memory registry out to | |
148 | * disk; acquire the lock first. | |
149 | */ | |
150 | kvp_acquire_lock(pool); | |
151 | ||
8467fdbb | 152 | filep = fopen(kvp_file_info[pool].fname, "we"); |
db425334 | 153 | if (!filep) { |
12e50c30 TH |
154 | syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, |
155 | errno, strerror(errno)); | |
db425334 | 156 | kvp_release_lock(pool); |
6bb22fea | 157 | exit(EXIT_FAILURE); |
db425334 S |
158 | } |
159 | ||
77ce247a | 160 | fwrite(kvp_file_info[pool].records, sizeof(struct kvp_record), |
db425334 S |
161 | kvp_file_info[pool].num_records, filep); |
162 | ||
436473bc BH |
163 | if (ferror(filep) || fclose(filep)) { |
164 | kvp_release_lock(pool); | |
165 | syslog(LOG_ERR, "Failed to write file, pool: %d", pool); | |
166 | exit(EXIT_FAILURE); | |
167 | } | |
168 | ||
db425334 S |
169 | kvp_release_lock(pool); |
170 | } | |
171 | ||
adc80ae6 S |
172 | static void kvp_update_mem_state(int pool) |
173 | { | |
174 | FILE *filep; | |
175 | size_t records_read = 0; | |
176 | struct kvp_record *record = kvp_file_info[pool].records; | |
177 | struct kvp_record *readp; | |
178 | int num_blocks = kvp_file_info[pool].num_blocks; | |
179 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
180 | ||
181 | kvp_acquire_lock(pool); | |
182 | ||
8467fdbb | 183 | filep = fopen(kvp_file_info[pool].fname, "re"); |
adc80ae6 | 184 | if (!filep) { |
12e50c30 TH |
185 | syslog(LOG_ERR, "Failed to open file, pool: %d; error: %d %s", pool, |
186 | errno, strerror(errno)); | |
adc80ae6 | 187 | kvp_release_lock(pool); |
6bb22fea | 188 | exit(EXIT_FAILURE); |
adc80ae6 | 189 | } |
436473bc | 190 | for (;;) { |
adc80ae6 S |
191 | readp = &record[records_read]; |
192 | records_read += fread(readp, sizeof(struct kvp_record), | |
193 | ENTRIES_PER_BLOCK * num_blocks, | |
194 | filep); | |
195 | ||
436473bc BH |
196 | if (ferror(filep)) { |
197 | syslog(LOG_ERR, "Failed to read file, pool: %d", pool); | |
198 | exit(EXIT_FAILURE); | |
199 | } | |
200 | ||
adc80ae6 S |
201 | if (!feof(filep)) { |
202 | /* | |
203 | * We have more data to read. | |
204 | */ | |
205 | num_blocks++; | |
206 | record = realloc(record, alloc_unit * num_blocks); | |
207 | ||
208 | if (record == NULL) { | |
209 | syslog(LOG_ERR, "malloc failed"); | |
6bb22fea | 210 | exit(EXIT_FAILURE); |
adc80ae6 S |
211 | } |
212 | continue; | |
213 | } | |
214 | break; | |
215 | } | |
216 | ||
217 | kvp_file_info[pool].num_blocks = num_blocks; | |
218 | kvp_file_info[pool].records = record; | |
219 | kvp_file_info[pool].num_records = records_read; | |
220 | ||
d5ab4827 | 221 | fclose(filep); |
adc80ae6 S |
222 | kvp_release_lock(pool); |
223 | } | |
db425334 S |
224 | static int kvp_file_init(void) |
225 | { | |
00b83355 | 226 | int fd; |
db425334 S |
227 | FILE *filep; |
228 | size_t records_read; | |
d0cbc156 | 229 | char *fname; |
db425334 S |
230 | struct kvp_record *record; |
231 | struct kvp_record *readp; | |
232 | int num_blocks; | |
233 | int i; | |
234 | int alloc_unit = sizeof(struct kvp_record) * ENTRIES_PER_BLOCK; | |
235 | ||
40424f5f | 236 | if (access(KVP_CONFIG_LOC, F_OK)) { |
0bffd25c | 237 | if (mkdir(KVP_CONFIG_LOC, 0755 /* rwxr-xr-x */)) { |
12e50c30 TH |
238 | syslog(LOG_ERR, "Failed to create '%s'; error: %d %s", KVP_CONFIG_LOC, |
239 | errno, strerror(errno)); | |
6bb22fea | 240 | exit(EXIT_FAILURE); |
db425334 S |
241 | } |
242 | } | |
243 | ||
244 | for (i = 0; i < KVP_POOL_COUNT; i++) { | |
245 | fname = kvp_file_info[i].fname; | |
246 | records_read = 0; | |
247 | num_blocks = 1; | |
40424f5f | 248 | sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); |
8467fdbb | 249 | fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */); |
db425334 S |
250 | |
251 | if (fd == -1) | |
252 | return 1; | |
253 | ||
254 | ||
8467fdbb | 255 | filep = fopen(fname, "re"); |
fca59755 TH |
256 | if (!filep) { |
257 | close(fd); | |
db425334 | 258 | return 1; |
fca59755 | 259 | } |
db425334 S |
260 | |
261 | record = malloc(alloc_unit * num_blocks); | |
262 | if (record == NULL) { | |
263 | fclose(filep); | |
fca59755 | 264 | close(fd); |
db425334 S |
265 | return 1; |
266 | } | |
436473bc | 267 | for (;;) { |
db425334 S |
268 | readp = &record[records_read]; |
269 | records_read += fread(readp, sizeof(struct kvp_record), | |
270 | ENTRIES_PER_BLOCK, | |
271 | filep); | |
272 | ||
436473bc BH |
273 | if (ferror(filep)) { |
274 | syslog(LOG_ERR, "Failed to read file, pool: %d", | |
275 | i); | |
276 | exit(EXIT_FAILURE); | |
277 | } | |
278 | ||
db425334 S |
279 | if (!feof(filep)) { |
280 | /* | |
281 | * We have more data to read. | |
282 | */ | |
283 | num_blocks++; | |
284 | record = realloc(record, alloc_unit * | |
285 | num_blocks); | |
286 | if (record == NULL) { | |
287 | fclose(filep); | |
fca59755 | 288 | close(fd); |
db425334 S |
289 | return 1; |
290 | } | |
291 | continue; | |
292 | } | |
293 | break; | |
294 | } | |
295 | kvp_file_info[i].fd = fd; | |
296 | kvp_file_info[i].num_blocks = num_blocks; | |
297 | kvp_file_info[i].records = record; | |
298 | kvp_file_info[i].num_records = records_read; | |
299 | fclose(filep); | |
300 | ||
301 | } | |
302 | ||
303 | return 0; | |
304 | } | |
305 | ||
69258c05 | 306 | static int kvp_key_delete(int pool, const __u8 *key, int key_size) |
db425334 S |
307 | { |
308 | int i; | |
309 | int j, k; | |
adc80ae6 S |
310 | int num_records; |
311 | struct kvp_record *record; | |
312 | ||
313 | /* | |
314 | * First update the in-memory state. | |
315 | */ | |
316 | kvp_update_mem_state(pool); | |
317 | ||
318 | num_records = kvp_file_info[pool].num_records; | |
319 | record = kvp_file_info[pool].records; | |
db425334 S |
320 | |
321 | for (i = 0; i < num_records; i++) { | |
322 | if (memcmp(key, record[i].key, key_size)) | |
323 | continue; | |
324 | /* | |
325 | * Found a match; just move the remaining | |
326 | * entries up. | |
327 | */ | |
328 | if (i == num_records) { | |
329 | kvp_file_info[pool].num_records--; | |
330 | kvp_update_file(pool); | |
331 | return 0; | |
332 | } | |
333 | ||
334 | j = i; | |
335 | k = j + 1; | |
336 | for (; k < num_records; k++) { | |
337 | strcpy(record[j].key, record[k].key); | |
338 | strcpy(record[j].value, record[k].value); | |
339 | j++; | |
340 | } | |
341 | ||
342 | kvp_file_info[pool].num_records--; | |
343 | kvp_update_file(pool); | |
344 | return 0; | |
345 | } | |
346 | return 1; | |
347 | } | |
348 | ||
69258c05 VK |
349 | static int kvp_key_add_or_modify(int pool, const __u8 *key, int key_size, |
350 | const __u8 *value, int value_size) | |
db425334 S |
351 | { |
352 | int i; | |
adc80ae6 S |
353 | int num_records; |
354 | struct kvp_record *record; | |
355 | int num_blocks; | |
db425334 S |
356 | |
357 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
358 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
359 | return 1; | |
360 | ||
adc80ae6 S |
361 | /* |
362 | * First update the in-memory state. | |
363 | */ | |
364 | kvp_update_mem_state(pool); | |
365 | ||
366 | num_records = kvp_file_info[pool].num_records; | |
367 | record = kvp_file_info[pool].records; | |
368 | num_blocks = kvp_file_info[pool].num_blocks; | |
369 | ||
db425334 S |
370 | for (i = 0; i < num_records; i++) { |
371 | if (memcmp(key, record[i].key, key_size)) | |
372 | continue; | |
373 | /* | |
374 | * Found a match; just update the value - | |
375 | * this is the modify case. | |
376 | */ | |
377 | memcpy(record[i].value, value, value_size); | |
378 | kvp_update_file(pool); | |
379 | return 0; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Need to add a new entry; | |
384 | */ | |
385 | if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { | |
386 | /* Need to allocate a larger array for reg entries. */ | |
387 | record = realloc(record, sizeof(struct kvp_record) * | |
388 | ENTRIES_PER_BLOCK * (num_blocks + 1)); | |
389 | ||
390 | if (record == NULL) | |
391 | return 1; | |
392 | kvp_file_info[pool].num_blocks++; | |
393 | ||
394 | } | |
395 | memcpy(record[i].value, value, value_size); | |
396 | memcpy(record[i].key, key, key_size); | |
397 | kvp_file_info[pool].records = record; | |
398 | kvp_file_info[pool].num_records++; | |
399 | kvp_update_file(pool); | |
400 | return 0; | |
401 | } | |
402 | ||
69258c05 | 403 | static int kvp_get_value(int pool, const __u8 *key, int key_size, __u8 *value, |
db425334 S |
404 | int value_size) |
405 | { | |
406 | int i; | |
adc80ae6 S |
407 | int num_records; |
408 | struct kvp_record *record; | |
db425334 S |
409 | |
410 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
411 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
412 | return 1; | |
413 | ||
adc80ae6 S |
414 | /* |
415 | * First update the in-memory state. | |
416 | */ | |
417 | kvp_update_mem_state(pool); | |
418 | ||
419 | num_records = kvp_file_info[pool].num_records; | |
420 | record = kvp_file_info[pool].records; | |
421 | ||
db425334 S |
422 | for (i = 0; i < num_records; i++) { |
423 | if (memcmp(key, record[i].key, key_size)) | |
424 | continue; | |
425 | /* | |
426 | * Found a match; just copy the value out. | |
427 | */ | |
428 | memcpy(value, record[i].value, value_size); | |
429 | return 0; | |
430 | } | |
431 | ||
432 | return 1; | |
433 | } | |
434 | ||
69258c05 VK |
435 | static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, |
436 | __u8 *value, int value_size) | |
adc80ae6 S |
437 | { |
438 | struct kvp_record *record; | |
439 | ||
440 | /* | |
441 | * First update our in-memory database. | |
442 | */ | |
443 | kvp_update_mem_state(pool); | |
444 | record = kvp_file_info[pool].records; | |
445 | ||
446 | if (index >= kvp_file_info[pool].num_records) { | |
b47a81dc | 447 | return 1; |
adc80ae6 S |
448 | } |
449 | ||
450 | memcpy(key, record[index].key, key_size); | |
451 | memcpy(value, record[index].value, value_size); | |
b47a81dc | 452 | return 0; |
adc80ae6 S |
453 | } |
454 | ||
455 | ||
cc04acf5 KS |
456 | void kvp_get_os_info(void) |
457 | { | |
458 | FILE *file; | |
7989f7d5 | 459 | char *p, buf[512]; |
cc04acf5 | 460 | |
7989f7d5 | 461 | uname(&uts_buf); |
f426a36c S |
462 | os_version = uts_buf.release; |
463 | os_build = strdup(uts_buf.release); | |
464 | ||
44c8b25f | 465 | os_name = uts_buf.sysname; |
064931d0 | 466 | processor_arch = uts_buf.machine; |
cc04acf5 | 467 | |
e54bbc64 S |
468 | /* |
469 | * The current windows host (win7) expects the build | |
470 | * string to be of the form: x.y.z | |
471 | * Strip additional information we may have. | |
472 | */ | |
f426a36c | 473 | p = strchr(os_version, '-'); |
e54bbc64 S |
474 | if (p) |
475 | *p = '\0'; | |
476 | ||
44c8b25f BH |
477 | /* |
478 | * Parse the /etc/os-release file if present: | |
479 | * http://www.freedesktop.org/software/systemd/man/os-release.html | |
480 | */ | |
481 | file = fopen("/etc/os-release", "r"); | |
482 | if (file != NULL) { | |
483 | while (fgets(buf, sizeof(buf), file)) { | |
484 | char *value, *q; | |
485 | ||
486 | /* Ignore comments */ | |
487 | if (buf[0] == '#') | |
488 | continue; | |
489 | ||
490 | /* Split into name=value */ | |
491 | p = strchr(buf, '='); | |
492 | if (!p) | |
493 | continue; | |
494 | *p++ = 0; | |
495 | ||
496 | /* Remove quotes and newline; un-escape */ | |
497 | value = p; | |
498 | q = p; | |
499 | while (*p) { | |
500 | if (*p == '\\') { | |
501 | ++p; | |
502 | if (!*p) | |
503 | break; | |
504 | *q++ = *p++; | |
505 | } else if (*p == '\'' || *p == '"' || | |
506 | *p == '\n') { | |
507 | ++p; | |
508 | } else { | |
509 | *q++ = *p++; | |
510 | } | |
511 | } | |
512 | *q = 0; | |
513 | ||
514 | if (!strcmp(buf, "NAME")) { | |
515 | p = strdup(value); | |
516 | if (!p) | |
517 | break; | |
518 | os_name = p; | |
519 | } else if (!strcmp(buf, "VERSION_ID")) { | |
520 | p = strdup(value); | |
521 | if (!p) | |
522 | break; | |
523 | os_major = p; | |
524 | } | |
525 | } | |
526 | fclose(file); | |
527 | return; | |
528 | } | |
529 | ||
530 | /* Fallback for older RH/SUSE releases */ | |
cc04acf5 KS |
531 | file = fopen("/etc/SuSE-release", "r"); |
532 | if (file != NULL) | |
533 | goto kvp_osinfo_found; | |
534 | file = fopen("/etc/redhat-release", "r"); | |
535 | if (file != NULL) | |
536 | goto kvp_osinfo_found; | |
cc04acf5 KS |
537 | |
538 | /* | |
539 | * We don't have information about the os. | |
540 | */ | |
cc04acf5 KS |
541 | return; |
542 | ||
543 | kvp_osinfo_found: | |
7989f7d5 OH |
544 | /* up to three lines */ |
545 | p = fgets(buf, sizeof(buf), file); | |
546 | if (p) { | |
547 | p = strchr(buf, '\n'); | |
548 | if (p) | |
549 | *p = '\0'; | |
550 | p = strdup(buf); | |
551 | if (!p) | |
552 | goto done; | |
553 | os_name = p; | |
554 | ||
555 | /* second line */ | |
556 | p = fgets(buf, sizeof(buf), file); | |
557 | if (p) { | |
558 | p = strchr(buf, '\n'); | |
559 | if (p) | |
560 | *p = '\0'; | |
561 | p = strdup(buf); | |
562 | if (!p) | |
563 | goto done; | |
564 | os_major = p; | |
565 | ||
566 | /* third line */ | |
567 | p = fgets(buf, sizeof(buf), file); | |
568 | if (p) { | |
569 | p = strchr(buf, '\n'); | |
570 | if (p) | |
571 | *p = '\0'; | |
572 | p = strdup(buf); | |
573 | if (p) | |
574 | os_minor = p; | |
575 | } | |
576 | } | |
577 | } | |
578 | ||
579 | done: | |
cc04acf5 KS |
580 | fclose(file); |
581 | return; | |
582 | } | |
583 | ||
32061b4d S |
584 | |
585 | ||
586 | /* | |
587 | * Retrieve an interface name corresponding to the specified guid. | |
588 | * If there is a match, the function returns a pointer | |
589 | * to the interface name and if not, a NULL is returned. | |
590 | * If a match is found, the caller is responsible for | |
591 | * freeing the memory. | |
592 | */ | |
593 | ||
594 | static char *kvp_get_if_name(char *guid) | |
595 | { | |
596 | DIR *dir; | |
597 | struct dirent *entry; | |
598 | FILE *file; | |
599 | char *p, *q, *x; | |
600 | char *if_name = NULL; | |
601 | char buf[256]; | |
602 | char *kvp_net_dir = "/sys/class/net/"; | |
603 | char dev_id[256]; | |
604 | ||
605 | dir = opendir(kvp_net_dir); | |
606 | if (dir == NULL) | |
607 | return NULL; | |
608 | ||
609 | snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); | |
610 | q = dev_id + strlen(kvp_net_dir); | |
611 | ||
612 | while ((entry = readdir(dir)) != NULL) { | |
613 | /* | |
614 | * Set the state for the next pass. | |
615 | */ | |
616 | *q = '\0'; | |
617 | strcat(dev_id, entry->d_name); | |
618 | strcat(dev_id, "/device/device_id"); | |
619 | ||
620 | file = fopen(dev_id, "r"); | |
621 | if (file == NULL) | |
622 | continue; | |
623 | ||
624 | p = fgets(buf, sizeof(buf), file); | |
625 | if (p) { | |
626 | x = strchr(p, '\n'); | |
627 | if (x) | |
628 | *x = '\0'; | |
629 | ||
630 | if (!strcmp(p, guid)) { | |
631 | /* | |
632 | * Found the guid match; return the interface | |
633 | * name. The caller will free the memory. | |
634 | */ | |
635 | if_name = strdup(entry->d_name); | |
636 | fclose(file); | |
637 | break; | |
638 | } | |
639 | } | |
640 | fclose(file); | |
641 | } | |
642 | ||
643 | closedir(dir); | |
644 | return if_name; | |
645 | } | |
646 | ||
647 | /* | |
648 | * Retrieve the MAC address given the interface name. | |
649 | */ | |
650 | ||
651 | static char *kvp_if_name_to_mac(char *if_name) | |
652 | { | |
653 | FILE *file; | |
654 | char *p, *x; | |
655 | char buf[256]; | |
656 | char addr_file[256]; | |
69258c05 | 657 | unsigned int i; |
32061b4d S |
658 | char *mac_addr = NULL; |
659 | ||
660 | snprintf(addr_file, sizeof(addr_file), "%s%s%s", "/sys/class/net/", | |
661 | if_name, "/address"); | |
662 | ||
663 | file = fopen(addr_file, "r"); | |
664 | if (file == NULL) | |
665 | return NULL; | |
666 | ||
667 | p = fgets(buf, sizeof(buf), file); | |
668 | if (p) { | |
669 | x = strchr(p, '\n'); | |
670 | if (x) | |
671 | *x = '\0'; | |
672 | for (i = 0; i < strlen(p); i++) | |
673 | p[i] = toupper(p[i]); | |
674 | mac_addr = strdup(p); | |
675 | } | |
676 | ||
677 | fclose(file); | |
678 | return mac_addr; | |
679 | } | |
680 | ||
681 | ||
16e87100 S |
682 | /* |
683 | * Retrieve the interface name given tha MAC address. | |
684 | */ | |
685 | ||
686 | static char *kvp_mac_to_if_name(char *mac) | |
687 | { | |
688 | DIR *dir; | |
689 | struct dirent *entry; | |
690 | FILE *file; | |
691 | char *p, *q, *x; | |
692 | char *if_name = NULL; | |
693 | char buf[256]; | |
694 | char *kvp_net_dir = "/sys/class/net/"; | |
695 | char dev_id[256]; | |
69258c05 | 696 | unsigned int i; |
16e87100 S |
697 | |
698 | dir = opendir(kvp_net_dir); | |
699 | if (dir == NULL) | |
700 | return NULL; | |
701 | ||
1745ba41 | 702 | snprintf(dev_id, sizeof(dev_id), "%s", kvp_net_dir); |
16e87100 S |
703 | q = dev_id + strlen(kvp_net_dir); |
704 | ||
705 | while ((entry = readdir(dir)) != NULL) { | |
706 | /* | |
707 | * Set the state for the next pass. | |
708 | */ | |
709 | *q = '\0'; | |
710 | ||
711 | strcat(dev_id, entry->d_name); | |
712 | strcat(dev_id, "/address"); | |
713 | ||
714 | file = fopen(dev_id, "r"); | |
715 | if (file == NULL) | |
716 | continue; | |
717 | ||
718 | p = fgets(buf, sizeof(buf), file); | |
719 | if (p) { | |
720 | x = strchr(p, '\n'); | |
721 | if (x) | |
722 | *x = '\0'; | |
723 | ||
724 | for (i = 0; i < strlen(p); i++) | |
725 | p[i] = toupper(p[i]); | |
726 | ||
727 | if (!strcmp(p, mac)) { | |
728 | /* | |
729 | * Found the MAC match; return the interface | |
730 | * name. The caller will free the memory. | |
731 | */ | |
732 | if_name = strdup(entry->d_name); | |
733 | fclose(file); | |
734 | break; | |
735 | } | |
736 | } | |
737 | fclose(file); | |
738 | } | |
739 | ||
740 | closedir(dir); | |
741 | return if_name; | |
742 | } | |
743 | ||
744 | ||
4a52c4af | 745 | static void kvp_process_ipconfig_file(char *cmd, |
69258c05 | 746 | char *config_buf, unsigned int len, |
4a52c4af S |
747 | int element_size, int offset) |
748 | { | |
749 | char buf[256]; | |
750 | char *p; | |
751 | char *x; | |
752 | FILE *file; | |
753 | ||
754 | /* | |
755 | * First execute the command. | |
756 | */ | |
757 | file = popen(cmd, "r"); | |
758 | if (file == NULL) | |
759 | return; | |
760 | ||
761 | if (offset == 0) | |
762 | memset(config_buf, 0, len); | |
763 | while ((p = fgets(buf, sizeof(buf), file)) != NULL) { | |
69258c05 | 764 | if (len < strlen(config_buf) + element_size + 1) |
4a52c4af S |
765 | break; |
766 | ||
767 | x = strchr(p, '\n'); | |
f14e600a TH |
768 | if (x) |
769 | *x = '\0'; | |
770 | ||
4a52c4af S |
771 | strcat(config_buf, p); |
772 | strcat(config_buf, ";"); | |
773 | } | |
774 | pclose(file); | |
775 | } | |
776 | ||
777 | static void kvp_get_ipconfig_info(char *if_name, | |
778 | struct hv_kvp_ipaddr_value *buffer) | |
779 | { | |
780 | char cmd[512]; | |
c0503725 S |
781 | char dhcp_info[128]; |
782 | char *p; | |
783 | FILE *file; | |
4a52c4af S |
784 | |
785 | /* | |
786 | * Get the address of default gateway (ipv4). | |
787 | */ | |
788 | sprintf(cmd, "%s %s", "ip route show dev", if_name); | |
789 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
790 | ||
791 | /* | |
792 | * Execute the command to gather gateway info. | |
793 | */ | |
794 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
795 | (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); | |
796 | ||
797 | /* | |
798 | * Get the address of default gateway (ipv6). | |
799 | */ | |
800 | sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); | |
801 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
802 | ||
803 | /* | |
804 | * Execute the command to gather gateway info (ipv6). | |
805 | */ | |
806 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
807 | (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); | |
808 | ||
96929887 S |
809 | |
810 | /* | |
811 | * Gather the DNS state. | |
812 | * Since there is no standard way to get this information | |
813 | * across various distributions of interest; we just invoke | |
814 | * an external script that needs to be ported across distros | |
815 | * of interest. | |
816 | * | |
817 | * Following is the expected format of the information from the script: | |
818 | * | |
819 | * ipaddr1 (nameserver1) | |
820 | * ipaddr2 (nameserver2) | |
821 | * . | |
822 | * . | |
823 | */ | |
824 | ||
2eb72d4b | 825 | sprintf(cmd, KVP_SCRIPTS_PATH "%s", "hv_get_dns_info"); |
96929887 S |
826 | |
827 | /* | |
828 | * Execute the command to gather DNS info. | |
829 | */ | |
830 | kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, | |
831 | (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); | |
c0503725 S |
832 | |
833 | /* | |
834 | * Gather the DHCP state. | |
835 | * We will gather this state by invoking an external script. | |
836 | * The parameter to the script is the interface name. | |
837 | * Here is the expected output: | |
838 | * | |
839 | * Enabled: DHCP enabled. | |
840 | */ | |
841 | ||
2eb72d4b | 842 | sprintf(cmd, KVP_SCRIPTS_PATH "%s %s", "hv_get_dhcp_info", if_name); |
c0503725 S |
843 | |
844 | file = popen(cmd, "r"); | |
845 | if (file == NULL) | |
846 | return; | |
847 | ||
848 | p = fgets(dhcp_info, sizeof(dhcp_info), file); | |
849 | if (p == NULL) { | |
850 | pclose(file); | |
851 | return; | |
852 | } | |
853 | ||
854 | if (!strncmp(p, "Enabled", 7)) | |
855 | buffer->dhcp_enabled = 1; | |
856 | else | |
857 | buffer->dhcp_enabled = 0; | |
858 | ||
859 | pclose(file); | |
4a52c4af S |
860 | } |
861 | ||
862 | ||
6a60a6a8 S |
863 | static unsigned int hweight32(unsigned int *w) |
864 | { | |
865 | unsigned int res = *w - ((*w >> 1) & 0x55555555); | |
866 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
867 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
868 | res = res + (res >> 8); | |
869 | return (res + (res >> 16)) & 0x000000FF; | |
870 | } | |
871 | ||
af733015 S |
872 | static int kvp_process_ip_address(void *addrp, |
873 | int family, char *buffer, | |
874 | int length, int *offset) | |
875 | { | |
876 | struct sockaddr_in *addr; | |
877 | struct sockaddr_in6 *addr6; | |
878 | int addr_length; | |
879 | char tmp[50]; | |
880 | const char *str; | |
881 | ||
882 | if (family == AF_INET) { | |
883 | addr = (struct sockaddr_in *)addrp; | |
884 | str = inet_ntop(family, &addr->sin_addr, tmp, 50); | |
885 | addr_length = INET_ADDRSTRLEN; | |
886 | } else { | |
887 | addr6 = (struct sockaddr_in6 *)addrp; | |
888 | str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); | |
889 | addr_length = INET6_ADDRSTRLEN; | |
890 | } | |
891 | ||
3321e738 | 892 | if ((length - *offset) < addr_length + 2) |
16e87100 | 893 | return HV_E_FAIL; |
af733015 S |
894 | if (str == NULL) { |
895 | strcpy(buffer, "inet_ntop failed\n"); | |
16e87100 | 896 | return HV_E_FAIL; |
af733015 S |
897 | } |
898 | if (*offset == 0) | |
899 | strcpy(buffer, tmp); | |
3321e738 S |
900 | else { |
901 | strcat(buffer, ";"); | |
af733015 | 902 | strcat(buffer, tmp); |
3321e738 | 903 | } |
af733015 S |
904 | |
905 | *offset += strlen(str) + 1; | |
3321e738 | 906 | |
af733015 S |
907 | return 0; |
908 | } | |
909 | ||
cc04acf5 | 910 | static int |
4a3b97e5 | 911 | kvp_get_ip_info(int family, char *if_name, int op, |
69258c05 | 912 | void *out_buffer, unsigned int length) |
cc04acf5 KS |
913 | { |
914 | struct ifaddrs *ifap; | |
915 | struct ifaddrs *curp; | |
cc04acf5 | 916 | int offset = 0; |
04405784 | 917 | int sn_offset = 0; |
cc04acf5 | 918 | int error = 0; |
0ecaa198 S |
919 | char *buffer; |
920 | struct hv_kvp_ipaddr_value *ip_buffer; | |
6a60a6a8 S |
921 | char cidr_mask[5]; /* /xyz */ |
922 | int weight; | |
923 | int i; | |
924 | unsigned int *w; | |
925 | char *sn_str; | |
926 | struct sockaddr_in6 *addr6; | |
0ecaa198 S |
927 | |
928 | if (op == KVP_OP_ENUMERATE) { | |
929 | buffer = out_buffer; | |
930 | } else { | |
931 | ip_buffer = out_buffer; | |
932 | buffer = (char *)ip_buffer->ip_addr; | |
933 | ip_buffer->addr_family = 0; | |
934 | } | |
cc04acf5 KS |
935 | /* |
936 | * On entry into this function, the buffer is capable of holding the | |
0ecaa198 | 937 | * maximum key value. |
cc04acf5 KS |
938 | */ |
939 | ||
940 | if (getifaddrs(&ifap)) { | |
941 | strcpy(buffer, "getifaddrs failed\n"); | |
16e87100 | 942 | return HV_E_FAIL; |
cc04acf5 KS |
943 | } |
944 | ||
945 | curp = ifap; | |
946 | while (curp != NULL) { | |
0ecaa198 S |
947 | if (curp->ifa_addr == NULL) { |
948 | curp = curp->ifa_next; | |
949 | continue; | |
950 | } | |
cc04acf5 | 951 | |
0ecaa198 S |
952 | if ((if_name != NULL) && |
953 | (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { | |
954 | /* | |
955 | * We want info about a specific interface; | |
956 | * just continue. | |
957 | */ | |
958 | curp = curp->ifa_next; | |
959 | continue; | |
960 | } | |
cc04acf5 | 961 | |
0ecaa198 S |
962 | /* |
963 | * We only support two address families: AF_INET and AF_INET6. | |
964 | * If a family value of 0 is specified, we collect both | |
965 | * supported address families; if not we gather info on | |
966 | * the specified address family. | |
967 | */ | |
3321e738 S |
968 | if ((((family != 0) && |
969 | (curp->ifa_addr->sa_family != family))) || | |
970 | (curp->ifa_flags & IFF_LOOPBACK)) { | |
0ecaa198 S |
971 | curp = curp->ifa_next; |
972 | continue; | |
973 | } | |
974 | if ((curp->ifa_addr->sa_family != AF_INET) && | |
975 | (curp->ifa_addr->sa_family != AF_INET6)) { | |
976 | curp = curp->ifa_next; | |
977 | continue; | |
978 | } | |
979 | ||
0d5b6b19 S |
980 | if (op == KVP_OP_GET_IP_INFO) { |
981 | /* | |
982 | * Gather info other than the IP address. | |
983 | * IP address info will be gathered later. | |
984 | */ | |
04405784 | 985 | if (curp->ifa_addr->sa_family == AF_INET) { |
0d5b6b19 | 986 | ip_buffer->addr_family |= ADDR_FAMILY_IPV4; |
04405784 S |
987 | /* |
988 | * Get subnet info. | |
989 | */ | |
990 | error = kvp_process_ip_address( | |
991 | curp->ifa_netmask, | |
992 | AF_INET, | |
993 | (char *) | |
994 | ip_buffer->sub_net, | |
995 | length, | |
996 | &sn_offset); | |
997 | if (error) | |
998 | goto gather_ipaddr; | |
999 | } else { | |
0d5b6b19 | 1000 | ip_buffer->addr_family |= ADDR_FAMILY_IPV6; |
6a60a6a8 | 1001 | |
04405784 | 1002 | /* |
6a60a6a8 | 1003 | * Get subnet info in CIDR format. |
04405784 | 1004 | */ |
6a60a6a8 S |
1005 | weight = 0; |
1006 | sn_str = (char *)ip_buffer->sub_net; | |
1007 | addr6 = (struct sockaddr_in6 *) | |
1008 | curp->ifa_netmask; | |
1009 | w = addr6->sin6_addr.s6_addr32; | |
1010 | ||
1011 | for (i = 0; i < 4; i++) | |
1012 | weight += hweight32(&w[i]); | |
1013 | ||
1014 | sprintf(cidr_mask, "/%d", weight); | |
69258c05 | 1015 | if (length < sn_offset + strlen(cidr_mask) + 1) |
04405784 | 1016 | goto gather_ipaddr; |
6a60a6a8 S |
1017 | |
1018 | if (sn_offset == 0) | |
1019 | strcpy(sn_str, cidr_mask); | |
ed4bb974 S |
1020 | else { |
1021 | strcat((char *)ip_buffer->sub_net, ";"); | |
6a60a6a8 | 1022 | strcat(sn_str, cidr_mask); |
ed4bb974 | 1023 | } |
6a60a6a8 | 1024 | sn_offset += strlen(sn_str) + 1; |
04405784 | 1025 | } |
4a52c4af S |
1026 | |
1027 | /* | |
1028 | * Collect other ip related configuration info. | |
1029 | */ | |
1030 | ||
1031 | kvp_get_ipconfig_info(if_name, ip_buffer); | |
0d5b6b19 S |
1032 | } |
1033 | ||
04405784 | 1034 | gather_ipaddr: |
af733015 S |
1035 | error = kvp_process_ip_address(curp->ifa_addr, |
1036 | curp->ifa_addr->sa_family, | |
1037 | buffer, | |
1038 | length, &offset); | |
1039 | if (error) | |
1040 | goto getaddr_done; | |
0ecaa198 | 1041 | |
cc04acf5 KS |
1042 | curp = curp->ifa_next; |
1043 | } | |
1044 | ||
1045 | getaddr_done: | |
1046 | freeifaddrs(ifap); | |
1047 | return error; | |
1048 | } | |
1049 | ||
1050 | ||
32061b4d S |
1051 | static int expand_ipv6(char *addr, int type) |
1052 | { | |
1053 | int ret; | |
1054 | struct in6_addr v6_addr; | |
1055 | ||
1056 | ret = inet_pton(AF_INET6, addr, &v6_addr); | |
1057 | ||
1058 | if (ret != 1) { | |
1059 | if (type == NETMASK) | |
1060 | return 1; | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" | |
1065 | "%02x%02x:%02x%02x:%02x%02x", | |
1066 | (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], | |
1067 | (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], | |
1068 | (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], | |
1069 | (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], | |
1070 | (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], | |
1071 | (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], | |
1072 | (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], | |
1073 | (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); | |
1074 | ||
1075 | return 1; | |
1076 | ||
1077 | } | |
1078 | ||
1079 | static int is_ipv4(char *addr) | |
1080 | { | |
1081 | int ret; | |
1082 | struct in_addr ipv4_addr; | |
1083 | ||
1084 | ret = inet_pton(AF_INET, addr, &ipv4_addr); | |
1085 | ||
1086 | if (ret == 1) | |
1087 | return 1; | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static int parse_ip_val_buffer(char *in_buf, int *offset, | |
1092 | char *out_buf, int out_len) | |
1093 | { | |
1094 | char *x; | |
1095 | char *start; | |
1096 | ||
1097 | /* | |
1098 | * in_buf has sequence of characters that are seperated by | |
1099 | * the character ';'. The last sequence does not have the | |
1100 | * terminating ";" character. | |
1101 | */ | |
1102 | start = in_buf + *offset; | |
1103 | ||
1104 | x = strchr(start, ';'); | |
1105 | if (x) | |
1106 | *x = 0; | |
1107 | else | |
1108 | x = start + strlen(start); | |
1109 | ||
1110 | if (strlen(start) != 0) { | |
1111 | int i = 0; | |
1112 | /* | |
1113 | * Get rid of leading spaces. | |
1114 | */ | |
1115 | while (start[i] == ' ') | |
1116 | i++; | |
1117 | ||
1118 | if ((x - start) <= out_len) { | |
1119 | strcpy(out_buf, (start + i)); | |
1120 | *offset += (x - start) + 1; | |
1121 | return 1; | |
1122 | } | |
1123 | } | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) | |
1128 | { | |
1129 | int ret; | |
1130 | ||
1131 | ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); | |
1132 | ||
1133 | if (ret < 0) | |
1134 | return HV_E_FAIL; | |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | ||
1140 | static int process_ip_string(FILE *f, char *ip_string, int type) | |
1141 | { | |
1142 | int error = 0; | |
1143 | char addr[INET6_ADDRSTRLEN]; | |
1144 | int i = 0; | |
1145 | int j = 0; | |
1146 | char str[256]; | |
1147 | char sub_str[10]; | |
1148 | int offset = 0; | |
1149 | ||
1150 | memset(addr, 0, sizeof(addr)); | |
1151 | ||
1152 | while (parse_ip_val_buffer(ip_string, &offset, addr, | |
1153 | (MAX_IP_ADDR_SIZE * 2))) { | |
1154 | ||
1155 | sub_str[0] = 0; | |
1156 | if (is_ipv4(addr)) { | |
1157 | switch (type) { | |
1158 | case IPADDR: | |
1159 | snprintf(str, sizeof(str), "%s", "IPADDR"); | |
1160 | break; | |
1161 | case NETMASK: | |
1162 | snprintf(str, sizeof(str), "%s", "NETMASK"); | |
1163 | break; | |
1164 | case GATEWAY: | |
1165 | snprintf(str, sizeof(str), "%s", "GATEWAY"); | |
1166 | break; | |
1167 | case DNS: | |
1168 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1169 | break; | |
1170 | } | |
0783d72f TH |
1171 | |
1172 | if (type == DNS) { | |
32061b4d | 1173 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); |
0783d72f TH |
1174 | } else if (type == GATEWAY && i == 0) { |
1175 | ++i; | |
1176 | } else { | |
1177 | snprintf(sub_str, sizeof(sub_str), "%d", i++); | |
32061b4d S |
1178 | } |
1179 | ||
1180 | ||
1181 | } else if (expand_ipv6(addr, type)) { | |
1182 | switch (type) { | |
1183 | case IPADDR: | |
1184 | snprintf(str, sizeof(str), "%s", "IPV6ADDR"); | |
1185 | break; | |
1186 | case NETMASK: | |
1187 | snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); | |
1188 | break; | |
1189 | case GATEWAY: | |
1190 | snprintf(str, sizeof(str), "%s", | |
1191 | "IPV6_DEFAULTGW"); | |
1192 | break; | |
1193 | case DNS: | |
1194 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1195 | break; | |
1196 | } | |
0783d72f TH |
1197 | |
1198 | if (type == DNS) { | |
1199 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); | |
1200 | } else if (j == 0) { | |
1201 | ++j; | |
1202 | } else { | |
1203 | snprintf(sub_str, sizeof(sub_str), "_%d", j++); | |
32061b4d S |
1204 | } |
1205 | } else { | |
1206 | return HV_INVALIDARG; | |
1207 | } | |
1208 | ||
1209 | error = kvp_write_file(f, str, sub_str, addr); | |
1210 | if (error) | |
1211 | return error; | |
1212 | memset(addr, 0, sizeof(addr)); | |
1213 | } | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) | |
1219 | { | |
1220 | int error = 0; | |
1221 | char if_file[128]; | |
1222 | FILE *file; | |
1223 | char cmd[512]; | |
1224 | char *mac_addr; | |
1225 | ||
1226 | /* | |
1227 | * Set the configuration for the specified interface with | |
1228 | * the information provided. Since there is no standard | |
1229 | * way to configure an interface, we will have an external | |
1230 | * script that does the job of configuring the interface and | |
1231 | * flushing the configuration. | |
1232 | * | |
1233 | * The parameters passed to this external script are: | |
1234 | * 1. A configuration file that has the specified configuration. | |
1235 | * | |
1236 | * We will embed the name of the interface in the configuration | |
1237 | * file: ifcfg-ethx (where ethx is the interface name). | |
1238 | * | |
1239 | * The information provided here may be more than what is needed | |
1240 | * in a given distro to configure the interface and so are free | |
1241 | * ignore information that may not be relevant. | |
1242 | * | |
1243 | * Here is the format of the ip configuration file: | |
1244 | * | |
1245 | * HWADDR=macaddr | |
0783d72f TH |
1246 | * DEVICE=interface name |
1247 | * BOOTPROTO=<protocol> (where <protocol> is "dhcp" if DHCP is configured | |
1248 | * or "none" if no boot-time protocol should be used) | |
32061b4d | 1249 | * |
0783d72f TH |
1250 | * IPADDR0=ipaddr1 |
1251 | * IPADDR1=ipaddr2 | |
1252 | * IPADDRx=ipaddry (where y = x + 1) | |
32061b4d | 1253 | * |
0783d72f TH |
1254 | * NETMASK0=netmask1 |
1255 | * NETMASKx=netmasky (where y = x + 1) | |
32061b4d S |
1256 | * |
1257 | * GATEWAY=ipaddr1 | |
0783d72f | 1258 | * GATEWAYx=ipaddry (where y = x + 1) |
32061b4d S |
1259 | * |
1260 | * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) | |
1261 | * | |
1262 | * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be | |
1263 | * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as | |
1264 | * IPV6NETMASK. | |
1265 | * | |
1266 | * The host can specify multiple ipv4 and ipv6 addresses to be | |
1267 | * configured for the interface. Furthermore, the configuration | |
1268 | * needs to be persistent. A subsequent GET call on the interface | |
1269 | * is expected to return the configuration that is set via the SET | |
1270 | * call. | |
1271 | */ | |
1272 | ||
1273 | snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, | |
40424f5f | 1274 | "/ifcfg-", if_name); |
32061b4d S |
1275 | |
1276 | file = fopen(if_file, "w"); | |
1277 | ||
1278 | if (file == NULL) { | |
12e50c30 TH |
1279 | syslog(LOG_ERR, "Failed to open config file; error: %d %s", |
1280 | errno, strerror(errno)); | |
32061b4d S |
1281 | return HV_E_FAIL; |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * First write out the MAC address. | |
1286 | */ | |
1287 | ||
1288 | mac_addr = kvp_if_name_to_mac(if_name); | |
1289 | if (mac_addr == NULL) { | |
1290 | error = HV_E_FAIL; | |
1291 | goto setval_error; | |
1292 | } | |
1293 | ||
1294 | error = kvp_write_file(file, "HWADDR", "", mac_addr); | |
57969af0 | 1295 | free(mac_addr); |
32061b4d S |
1296 | if (error) |
1297 | goto setval_error; | |
1298 | ||
0783d72f | 1299 | error = kvp_write_file(file, "DEVICE", "", if_name); |
32061b4d S |
1300 | if (error) |
1301 | goto setval_error; | |
1302 | ||
787d6182 DC |
1303 | /* |
1304 | * The dhcp_enabled flag is only for IPv4. In the case the host only | |
1305 | * injects an IPv6 address, the flag is true, but we still need to | |
1306 | * proceed to parse and pass the IPv6 information to the | |
1307 | * disto-specific script hv_set_ifconfig. | |
1308 | */ | |
32061b4d | 1309 | if (new_val->dhcp_enabled) { |
0783d72f | 1310 | error = kvp_write_file(file, "BOOTPROTO", "", "dhcp"); |
32061b4d S |
1311 | if (error) |
1312 | goto setval_error; | |
1313 | ||
0783d72f TH |
1314 | } else { |
1315 | error = kvp_write_file(file, "BOOTPROTO", "", "none"); | |
1316 | if (error) | |
1317 | goto setval_error; | |
32061b4d S |
1318 | } |
1319 | ||
1320 | /* | |
1321 | * Write the configuration for ipaddress, netmask, gateway and | |
1322 | * name servers. | |
1323 | */ | |
1324 | ||
1325 | error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); | |
1326 | if (error) | |
1327 | goto setval_error; | |
1328 | ||
1329 | error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); | |
1330 | if (error) | |
1331 | goto setval_error; | |
1332 | ||
1333 | error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); | |
1334 | if (error) | |
1335 | goto setval_error; | |
1336 | ||
1337 | error = process_ip_string(file, (char *)new_val->dns_addr, DNS); | |
1338 | if (error) | |
1339 | goto setval_error; | |
1340 | ||
32061b4d S |
1341 | fclose(file); |
1342 | ||
1343 | /* | |
1344 | * Now that we have populated the configuration file, | |
1345 | * invoke the external script to do its magic. | |
1346 | */ | |
1347 | ||
2eb72d4b AF |
1348 | snprintf(cmd, sizeof(cmd), KVP_SCRIPTS_PATH "%s %s", |
1349 | "hv_set_ifconfig", if_file); | |
d3b688c6 OH |
1350 | if (system(cmd)) { |
1351 | syslog(LOG_ERR, "Failed to execute cmd '%s'; error: %d %s", | |
1352 | cmd, errno, strerror(errno)); | |
1353 | return HV_E_FAIL; | |
1354 | } | |
32061b4d S |
1355 | return 0; |
1356 | ||
1357 | setval_error: | |
1358 | syslog(LOG_ERR, "Failed to write config file"); | |
32061b4d S |
1359 | fclose(file); |
1360 | return error; | |
1361 | } | |
1362 | ||
1363 | ||
58125210 | 1364 | static void |
cc04acf5 KS |
1365 | kvp_get_domain_name(char *buffer, int length) |
1366 | { | |
1367 | struct addrinfo hints, *info ; | |
cc04acf5 KS |
1368 | int error = 0; |
1369 | ||
5be528c2 | 1370 | gethostname(buffer, length); |
cc04acf5 KS |
1371 | memset(&hints, 0, sizeof(hints)); |
1372 | hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ | |
1373 | hints.ai_socktype = SOCK_STREAM; | |
1374 | hints.ai_flags = AI_CANONNAME; | |
1375 | ||
5be528c2 | 1376 | error = getaddrinfo(buffer, NULL, &hints, &info); |
cc04acf5 | 1377 | if (error != 0) { |
58125210 OH |
1378 | snprintf(buffer, length, "getaddrinfo failed: 0x%x %s", |
1379 | error, gai_strerror(error)); | |
1380 | return; | |
cc04acf5 | 1381 | } |
58125210 | 1382 | snprintf(buffer, length, "%s", info->ai_canonname); |
cc04acf5 | 1383 | freeaddrinfo(info); |
cc04acf5 KS |
1384 | } |
1385 | ||
170f4bea VK |
1386 | void print_usage(char *argv[]) |
1387 | { | |
1388 | fprintf(stderr, "Usage: %s [options]\n" | |
1389 | "Options are:\n" | |
1390 | " -n, --no-daemon stay in foreground, don't daemonize\n" | |
1391 | " -h, --help print this help\n", argv[0]); | |
1392 | } | |
1393 | ||
1394 | int main(int argc, char *argv[]) | |
cc04acf5 | 1395 | { |
8ddca808 | 1396 | int kvp_fd, len; |
cc04acf5 | 1397 | int error; |
cc04acf5 | 1398 | struct pollfd pfd; |
8ddca808 VK |
1399 | char *p; |
1400 | struct hv_kvp_msg hv_msg[1]; | |
cc04acf5 KS |
1401 | char *key_value; |
1402 | char *key_name; | |
b47a81dc S |
1403 | int op; |
1404 | int pool; | |
32061b4d S |
1405 | char *if_name; |
1406 | struct hv_kvp_ipaddr_value *kvp_ip_val; | |
170f4bea VK |
1407 | int daemonize = 1, long_index = 0, opt; |
1408 | ||
1409 | static struct option long_options[] = { | |
1410 | {"help", no_argument, 0, 'h' }, | |
1411 | {"no-daemon", no_argument, 0, 'n' }, | |
1412 | {0, 0, 0, 0 } | |
1413 | }; | |
1414 | ||
1415 | while ((opt = getopt_long(argc, argv, "hn", long_options, | |
1416 | &long_index)) != -1) { | |
1417 | switch (opt) { | |
1418 | case 'n': | |
1419 | daemonize = 0; | |
1420 | break; | |
1421 | case 'h': | |
1422 | default: | |
1423 | print_usage(argv); | |
1424 | exit(EXIT_FAILURE); | |
1425 | } | |
1426 | } | |
cc04acf5 | 1427 | |
170f4bea | 1428 | if (daemonize && daemon(1, 0)) |
00663d73 | 1429 | return 1; |
170f4bea | 1430 | |
cc04acf5 KS |
1431 | openlog("KVP", 0, LOG_USER); |
1432 | syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); | |
b4919a5f | 1433 | |
26840437 | 1434 | kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC); |
8ddca808 VK |
1435 | |
1436 | if (kvp_fd < 0) { | |
1437 | syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s", | |
1438 | errno, strerror(errno)); | |
b4919a5f OH |
1439 | exit(EXIT_FAILURE); |
1440 | } | |
8ddca808 | 1441 | |
cc04acf5 KS |
1442 | /* |
1443 | * Retrieve OS release information. | |
1444 | */ | |
1445 | kvp_get_os_info(); | |
58125210 OH |
1446 | /* |
1447 | * Cache Fully Qualified Domain Name because getaddrinfo takes an | |
1448 | * unpredictable amount of time to finish. | |
1449 | */ | |
1450 | kvp_get_domain_name(full_domain_name, sizeof(full_domain_name)); | |
cc04acf5 | 1451 | |
db425334 S |
1452 | if (kvp_file_init()) { |
1453 | syslog(LOG_ERR, "Failed to initialize the pools"); | |
6bb22fea | 1454 | exit(EXIT_FAILURE); |
db425334 S |
1455 | } |
1456 | ||
cc04acf5 KS |
1457 | /* |
1458 | * Register ourselves with the kernel. | |
1459 | */ | |
b47a81dc | 1460 | hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; |
8ddca808 VK |
1461 | len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); |
1462 | if (len != sizeof(struct hv_kvp_msg)) { | |
1463 | syslog(LOG_ERR, "registration to kernel failed; error: %d %s", | |
1464 | errno, strerror(errno)); | |
1465 | close(kvp_fd); | |
6bb22fea | 1466 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1467 | } |
1468 | ||
8ddca808 | 1469 | pfd.fd = kvp_fd; |
cc04acf5 KS |
1470 | |
1471 | while (1) { | |
1472 | pfd.events = POLLIN; | |
1473 | pfd.revents = 0; | |
4d81e307 TH |
1474 | |
1475 | if (poll(&pfd, 1, -1) < 0) { | |
1476 | syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno)); | |
1477 | if (errno == EINVAL) { | |
8ddca808 | 1478 | close(kvp_fd); |
4d81e307 TH |
1479 | exit(EXIT_FAILURE); |
1480 | } | |
1481 | else | |
1482 | continue; | |
1483 | } | |
cc04acf5 | 1484 | |
8ddca808 | 1485 | len = read(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); |
4300f264 | 1486 | |
8ddca808 VK |
1487 | if (len != sizeof(struct hv_kvp_msg)) { |
1488 | syslog(LOG_ERR, "read failed; error:%d %s", | |
1489 | errno, strerror(errno)); | |
4300f264 | 1490 | |
8ddca808 VK |
1491 | close(kvp_fd); |
1492 | return EXIT_FAILURE; | |
cc04acf5 KS |
1493 | } |
1494 | ||
b47a81dc S |
1495 | /* |
1496 | * We will use the KVP header information to pass back | |
1497 | * the error from this daemon. So, first copy the state | |
1498 | * and set the error code to success. | |
1499 | */ | |
1500 | op = hv_msg->kvp_hdr.operation; | |
1501 | pool = hv_msg->kvp_hdr.pool; | |
1502 | hv_msg->error = HV_S_OK; | |
1503 | ||
1504 | if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { | |
cc04acf5 KS |
1505 | /* |
1506 | * Driver is registering with us; stash away the version | |
1507 | * information. | |
1508 | */ | |
b47a81dc | 1509 | in_hand_shake = 0; |
e485ceac | 1510 | p = (char *)hv_msg->body.kvp_register.version; |
7989f7d5 | 1511 | lic_version = malloc(strlen(p) + 1); |
cc04acf5 | 1512 | if (lic_version) { |
7989f7d5 | 1513 | strcpy(lic_version, p); |
cc04acf5 | 1514 | syslog(LOG_INFO, "KVP LIC Version: %s", |
8ddca808 | 1515 | lic_version); |
cc04acf5 KS |
1516 | } else { |
1517 | syslog(LOG_ERR, "malloc failed"); | |
1518 | } | |
1519 | continue; | |
b47a81dc | 1520 | } |
cc04acf5 | 1521 | |
b47a81dc | 1522 | switch (op) { |
16e87100 S |
1523 | case KVP_OP_GET_IP_INFO: |
1524 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1525 | if_name = | |
1526 | kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id); | |
1527 | ||
1528 | if (if_name == NULL) { | |
1529 | /* | |
1530 | * We could not map the mac address to an | |
1531 | * interface name; return error. | |
1532 | */ | |
1533 | hv_msg->error = HV_E_FAIL; | |
1534 | break; | |
1535 | } | |
1536 | error = kvp_get_ip_info( | |
1537 | 0, if_name, KVP_OP_GET_IP_INFO, | |
1538 | kvp_ip_val, | |
1539 | (MAX_IP_ADDR_SIZE * 2)); | |
1540 | ||
1541 | if (error) | |
1542 | hv_msg->error = error; | |
1543 | ||
1544 | free(if_name); | |
1545 | break; | |
1546 | ||
32061b4d S |
1547 | case KVP_OP_SET_IP_INFO: |
1548 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1549 | if_name = kvp_get_if_name( | |
1550 | (char *)kvp_ip_val->adapter_id); | |
1551 | if (if_name == NULL) { | |
1552 | /* | |
1553 | * We could not map the guid to an | |
1554 | * interface name; return error. | |
1555 | */ | |
1556 | hv_msg->error = HV_GUID_NOTFOUND; | |
1557 | break; | |
1558 | } | |
1559 | error = kvp_set_ip_info(if_name, kvp_ip_val); | |
1560 | if (error) | |
1561 | hv_msg->error = error; | |
1562 | ||
1563 | free(if_name); | |
1564 | break; | |
1565 | ||
fa3d5b85 | 1566 | case KVP_OP_SET: |
b47a81dc | 1567 | if (kvp_key_add_or_modify(pool, |
db425334 S |
1568 | hv_msg->body.kvp_set.data.key, |
1569 | hv_msg->body.kvp_set.data.key_size, | |
1570 | hv_msg->body.kvp_set.data.value, | |
1571 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1572 | hv_msg->error = HV_S_CONT; |
db425334 S |
1573 | break; |
1574 | ||
fa3d5b85 | 1575 | case KVP_OP_GET: |
b47a81dc | 1576 | if (kvp_get_value(pool, |
db425334 S |
1577 | hv_msg->body.kvp_set.data.key, |
1578 | hv_msg->body.kvp_set.data.key_size, | |
1579 | hv_msg->body.kvp_set.data.value, | |
1580 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1581 | hv_msg->error = HV_S_CONT; |
db425334 S |
1582 | break; |
1583 | ||
fa3d5b85 | 1584 | case KVP_OP_DELETE: |
b47a81dc | 1585 | if (kvp_key_delete(pool, |
db425334 S |
1586 | hv_msg->body.kvp_delete.key, |
1587 | hv_msg->body.kvp_delete.key_size)) | |
b47a81dc | 1588 | hv_msg->error = HV_S_CONT; |
db425334 S |
1589 | break; |
1590 | ||
cc04acf5 | 1591 | default: |
26403354 | 1592 | break; |
cc04acf5 KS |
1593 | } |
1594 | ||
b47a81dc | 1595 | if (op != KVP_OP_ENUMERATE) |
fa3d5b85 S |
1596 | goto kvp_done; |
1597 | ||
adc80ae6 S |
1598 | /* |
1599 | * If the pool is KVP_POOL_AUTO, dynamically generate | |
1600 | * both the key and the value; if not read from the | |
1601 | * appropriate pool. | |
1602 | */ | |
b47a81dc S |
1603 | if (pool != KVP_POOL_AUTO) { |
1604 | if (kvp_pool_enumerate(pool, | |
adc80ae6 S |
1605 | hv_msg->body.kvp_enum_data.index, |
1606 | hv_msg->body.kvp_enum_data.data.key, | |
1607 | HV_KVP_EXCHANGE_MAX_KEY_SIZE, | |
1608 | hv_msg->body.kvp_enum_data.data.value, | |
b47a81dc S |
1609 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
1610 | hv_msg->error = HV_S_CONT; | |
adc80ae6 S |
1611 | goto kvp_done; |
1612 | } | |
1613 | ||
26403354 S |
1614 | key_name = (char *)hv_msg->body.kvp_enum_data.data.key; |
1615 | key_value = (char *)hv_msg->body.kvp_enum_data.data.value; | |
cc04acf5 | 1616 | |
26403354 | 1617 | switch (hv_msg->body.kvp_enum_data.index) { |
cc04acf5 | 1618 | case FullyQualifiedDomainName: |
58125210 | 1619 | strcpy(key_value, full_domain_name); |
cc04acf5 KS |
1620 | strcpy(key_name, "FullyQualifiedDomainName"); |
1621 | break; | |
1622 | case IntegrationServicesVersion: | |
1623 | strcpy(key_name, "IntegrationServicesVersion"); | |
1624 | strcpy(key_value, lic_version); | |
1625 | break; | |
1626 | case NetworkAddressIPv4: | |
4a3b97e5 | 1627 | kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1628 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1629 | strcpy(key_name, "NetworkAddressIPv4"); |
1630 | break; | |
1631 | case NetworkAddressIPv6: | |
4a3b97e5 | 1632 | kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1633 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1634 | strcpy(key_name, "NetworkAddressIPv6"); |
1635 | break; | |
1636 | case OSBuildNumber: | |
1637 | strcpy(key_value, os_build); | |
1638 | strcpy(key_name, "OSBuildNumber"); | |
1639 | break; | |
1640 | case OSName: | |
1641 | strcpy(key_value, os_name); | |
1642 | strcpy(key_name, "OSName"); | |
1643 | break; | |
1644 | case OSMajorVersion: | |
1645 | strcpy(key_value, os_major); | |
1646 | strcpy(key_name, "OSMajorVersion"); | |
1647 | break; | |
1648 | case OSMinorVersion: | |
1649 | strcpy(key_value, os_minor); | |
1650 | strcpy(key_name, "OSMinorVersion"); | |
1651 | break; | |
1652 | case OSVersion: | |
f426a36c | 1653 | strcpy(key_value, os_version); |
cc04acf5 KS |
1654 | strcpy(key_name, "OSVersion"); |
1655 | break; | |
1656 | case ProcessorArchitecture: | |
1657 | strcpy(key_value, processor_arch); | |
1658 | strcpy(key_name, "ProcessorArchitecture"); | |
1659 | break; | |
1660 | default: | |
b47a81dc | 1661 | hv_msg->error = HV_S_CONT; |
cc04acf5 KS |
1662 | break; |
1663 | } | |
4300f264 | 1664 | |
8ddca808 VK |
1665 | /* Send the value back to the kernel. */ |
1666 | kvp_done: | |
1667 | len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); | |
1668 | if (len != sizeof(struct hv_kvp_msg)) { | |
1669 | syslog(LOG_ERR, "write failed; error: %d %s", errno, | |
1670 | strerror(errno)); | |
6bb22fea | 1671 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1672 | } |
1673 | } | |
1674 | ||
8ddca808 VK |
1675 | close(kvp_fd); |
1676 | exit(0); | |
cc04acf5 | 1677 | } |