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> |
a1a7ea6b | 42 | #include <limits.h> |
170f4bea | 43 | #include <getopt.h> |
cc04acf5 KS |
44 | |
45 | /* | |
46 | * KVP protocol: The user mode component first registers with the | |
47 | * the kernel component. Subsequently, the kernel component requests, data | |
48 | * for the specified keys. In response to this message the user mode component | |
49 | * fills in the value corresponding to the specified key. We overload the | |
50 | * sequence field in the cn_msg header to define our KVP message types. | |
51 | * | |
52 | * We use this infrastructure for also supporting queries from user mode | |
53 | * application for state that may be maintained in the KVP kernel component. | |
54 | * | |
cc04acf5 KS |
55 | */ |
56 | ||
cc04acf5 KS |
57 | |
58 | enum key_index { | |
59 | FullyQualifiedDomainName = 0, | |
60 | IntegrationServicesVersion, /*This key is serviced in the kernel*/ | |
61 | NetworkAddressIPv4, | |
62 | NetworkAddressIPv6, | |
63 | OSBuildNumber, | |
64 | OSName, | |
65 | OSMajorVersion, | |
66 | OSMinorVersion, | |
67 | OSVersion, | |
68 | ProcessorArchitecture | |
69 | }; | |
70 | ||
32061b4d S |
71 | |
72 | enum { | |
73 | IPADDR = 0, | |
74 | NETMASK, | |
75 | GATEWAY, | |
76 | DNS | |
77 | }; | |
78 | ||
9fc3c01a | 79 | static int in_hand_shake; |
cc04acf5 | 80 | |
7989f7d5 OH |
81 | static char *os_name = ""; |
82 | static char *os_major = ""; | |
83 | static char *os_minor = ""; | |
84 | static char *processor_arch; | |
85 | static char *os_build; | |
f426a36c | 86 | static char *os_version; |
b47a81dc | 87 | static char *lic_version = "Unknown version"; |
58125210 | 88 | static char full_domain_name[HV_KVP_EXCHANGE_MAX_VALUE_SIZE]; |
7989f7d5 | 89 | static struct utsname uts_buf; |
cc04acf5 | 90 | |
32061b4d S |
91 | /* |
92 | * The location of the interface configuration file. | |
93 | */ | |
94 | ||
40424f5f | 95 | #define KVP_CONFIG_LOC "/var/lib/hyperv" |
db425334 | 96 | |
2eb72d4b AF |
97 | #ifndef KVP_SCRIPTS_PATH |
98 | #define KVP_SCRIPTS_PATH "/usr/libexec/hypervkvpd/" | |
99 | #endif | |
100 | ||
a1a7ea6b VK |
101 | #define KVP_NET_DIR "/sys/class/net/" |
102 | ||
db425334 S |
103 | #define MAX_FILE_NAME 100 |
104 | #define ENTRIES_PER_BLOCK 50 | |
105 | ||
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), | |
297d6b6e PM |
196 | ENTRIES_PER_BLOCK * num_blocks - records_read, |
197 | filep); | |
adc80ae6 | 198 | |
436473bc | 199 | if (ferror(filep)) { |
297d6b6e PM |
200 | syslog(LOG_ERR, |
201 | "Failed to read file, pool: %d; error: %d %s", | |
202 | pool, errno, strerror(errno)); | |
203 | kvp_release_lock(pool); | |
436473bc BH |
204 | exit(EXIT_FAILURE); |
205 | } | |
206 | ||
adc80ae6 S |
207 | if (!feof(filep)) { |
208 | /* | |
209 | * We have more data to read. | |
210 | */ | |
211 | num_blocks++; | |
212 | record = realloc(record, alloc_unit * num_blocks); | |
213 | ||
214 | if (record == NULL) { | |
215 | syslog(LOG_ERR, "malloc failed"); | |
297d6b6e | 216 | kvp_release_lock(pool); |
6bb22fea | 217 | exit(EXIT_FAILURE); |
adc80ae6 S |
218 | } |
219 | continue; | |
220 | } | |
221 | break; | |
222 | } | |
223 | ||
224 | kvp_file_info[pool].num_blocks = num_blocks; | |
225 | kvp_file_info[pool].records = record; | |
226 | kvp_file_info[pool].num_records = records_read; | |
227 | ||
d5ab4827 | 228 | fclose(filep); |
adc80ae6 S |
229 | kvp_release_lock(pool); |
230 | } | |
297d6b6e | 231 | |
db425334 S |
232 | static int kvp_file_init(void) |
233 | { | |
00b83355 | 234 | int fd; |
d0cbc156 | 235 | char *fname; |
db425334 S |
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; | |
40424f5f | 249 | sprintf(fname, "%s/.kvp_pool_%d", KVP_CONFIG_LOC, i); |
8467fdbb | 250 | fd = open(fname, O_RDWR | O_CREAT | O_CLOEXEC, 0644 /* rw-r--r-- */); |
db425334 S |
251 | |
252 | if (fd == -1) | |
253 | return 1; | |
254 | ||
db425334 | 255 | kvp_file_info[i].fd = fd; |
297d6b6e PM |
256 | kvp_file_info[i].num_blocks = 1; |
257 | kvp_file_info[i].records = malloc(alloc_unit); | |
258 | if (kvp_file_info[i].records == NULL) | |
259 | return 1; | |
260 | kvp_file_info[i].num_records = 0; | |
261 | kvp_update_mem_state(i); | |
db425334 S |
262 | } |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
69258c05 | 267 | static int kvp_key_delete(int pool, const __u8 *key, int key_size) |
db425334 S |
268 | { |
269 | int i; | |
270 | int j, k; | |
adc80ae6 S |
271 | int num_records; |
272 | struct kvp_record *record; | |
273 | ||
274 | /* | |
275 | * First update the in-memory state. | |
276 | */ | |
277 | kvp_update_mem_state(pool); | |
278 | ||
279 | num_records = kvp_file_info[pool].num_records; | |
280 | record = kvp_file_info[pool].records; | |
db425334 S |
281 | |
282 | for (i = 0; i < num_records; i++) { | |
283 | if (memcmp(key, record[i].key, key_size)) | |
284 | continue; | |
285 | /* | |
286 | * Found a match; just move the remaining | |
287 | * entries up. | |
288 | */ | |
86503bd3 | 289 | if (i == (num_records - 1)) { |
db425334 S |
290 | kvp_file_info[pool].num_records--; |
291 | kvp_update_file(pool); | |
292 | return 0; | |
293 | } | |
294 | ||
295 | j = i; | |
296 | k = j + 1; | |
297 | for (; k < num_records; k++) { | |
298 | strcpy(record[j].key, record[k].key); | |
299 | strcpy(record[j].value, record[k].value); | |
300 | j++; | |
301 | } | |
302 | ||
303 | kvp_file_info[pool].num_records--; | |
304 | kvp_update_file(pool); | |
305 | return 0; | |
306 | } | |
307 | return 1; | |
308 | } | |
309 | ||
69258c05 VK |
310 | static int kvp_key_add_or_modify(int pool, const __u8 *key, int key_size, |
311 | const __u8 *value, int value_size) | |
db425334 S |
312 | { |
313 | int i; | |
adc80ae6 S |
314 | int num_records; |
315 | struct kvp_record *record; | |
316 | int num_blocks; | |
db425334 S |
317 | |
318 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
319 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
320 | return 1; | |
321 | ||
adc80ae6 S |
322 | /* |
323 | * First update the in-memory state. | |
324 | */ | |
325 | kvp_update_mem_state(pool); | |
326 | ||
327 | num_records = kvp_file_info[pool].num_records; | |
328 | record = kvp_file_info[pool].records; | |
329 | num_blocks = kvp_file_info[pool].num_blocks; | |
330 | ||
db425334 S |
331 | for (i = 0; i < num_records; i++) { |
332 | if (memcmp(key, record[i].key, key_size)) | |
333 | continue; | |
334 | /* | |
335 | * Found a match; just update the value - | |
336 | * this is the modify case. | |
337 | */ | |
338 | memcpy(record[i].value, value, value_size); | |
339 | kvp_update_file(pool); | |
340 | return 0; | |
341 | } | |
342 | ||
343 | /* | |
344 | * Need to add a new entry; | |
345 | */ | |
346 | if (num_records == (ENTRIES_PER_BLOCK * num_blocks)) { | |
347 | /* Need to allocate a larger array for reg entries. */ | |
348 | record = realloc(record, sizeof(struct kvp_record) * | |
349 | ENTRIES_PER_BLOCK * (num_blocks + 1)); | |
350 | ||
351 | if (record == NULL) | |
352 | return 1; | |
353 | kvp_file_info[pool].num_blocks++; | |
354 | ||
355 | } | |
356 | memcpy(record[i].value, value, value_size); | |
357 | memcpy(record[i].key, key, key_size); | |
358 | kvp_file_info[pool].records = record; | |
359 | kvp_file_info[pool].num_records++; | |
360 | kvp_update_file(pool); | |
361 | return 0; | |
362 | } | |
363 | ||
69258c05 | 364 | static int kvp_get_value(int pool, const __u8 *key, int key_size, __u8 *value, |
db425334 S |
365 | int value_size) |
366 | { | |
367 | int i; | |
adc80ae6 S |
368 | int num_records; |
369 | struct kvp_record *record; | |
db425334 S |
370 | |
371 | if ((key_size > HV_KVP_EXCHANGE_MAX_KEY_SIZE) || | |
372 | (value_size > HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) | |
373 | return 1; | |
374 | ||
adc80ae6 S |
375 | /* |
376 | * First update the in-memory state. | |
377 | */ | |
378 | kvp_update_mem_state(pool); | |
379 | ||
380 | num_records = kvp_file_info[pool].num_records; | |
381 | record = kvp_file_info[pool].records; | |
382 | ||
db425334 S |
383 | for (i = 0; i < num_records; i++) { |
384 | if (memcmp(key, record[i].key, key_size)) | |
385 | continue; | |
386 | /* | |
387 | * Found a match; just copy the value out. | |
388 | */ | |
389 | memcpy(value, record[i].value, value_size); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | return 1; | |
394 | } | |
395 | ||
69258c05 VK |
396 | static int kvp_pool_enumerate(int pool, int index, __u8 *key, int key_size, |
397 | __u8 *value, int value_size) | |
adc80ae6 S |
398 | { |
399 | struct kvp_record *record; | |
400 | ||
401 | /* | |
402 | * First update our in-memory database. | |
403 | */ | |
404 | kvp_update_mem_state(pool); | |
405 | record = kvp_file_info[pool].records; | |
406 | ||
407 | if (index >= kvp_file_info[pool].num_records) { | |
b47a81dc | 408 | return 1; |
adc80ae6 S |
409 | } |
410 | ||
411 | memcpy(key, record[index].key, key_size); | |
412 | memcpy(value, record[index].value, value_size); | |
b47a81dc | 413 | return 0; |
adc80ae6 S |
414 | } |
415 | ||
416 | ||
cc04acf5 KS |
417 | void kvp_get_os_info(void) |
418 | { | |
419 | FILE *file; | |
7989f7d5 | 420 | char *p, buf[512]; |
cc04acf5 | 421 | |
7989f7d5 | 422 | uname(&uts_buf); |
f426a36c S |
423 | os_version = uts_buf.release; |
424 | os_build = strdup(uts_buf.release); | |
425 | ||
44c8b25f | 426 | os_name = uts_buf.sysname; |
064931d0 | 427 | processor_arch = uts_buf.machine; |
cc04acf5 | 428 | |
e54bbc64 S |
429 | /* |
430 | * The current windows host (win7) expects the build | |
431 | * string to be of the form: x.y.z | |
432 | * Strip additional information we may have. | |
433 | */ | |
f426a36c | 434 | p = strchr(os_version, '-'); |
e54bbc64 S |
435 | if (p) |
436 | *p = '\0'; | |
437 | ||
44c8b25f BH |
438 | /* |
439 | * Parse the /etc/os-release file if present: | |
440 | * http://www.freedesktop.org/software/systemd/man/os-release.html | |
441 | */ | |
442 | file = fopen("/etc/os-release", "r"); | |
443 | if (file != NULL) { | |
444 | while (fgets(buf, sizeof(buf), file)) { | |
445 | char *value, *q; | |
446 | ||
447 | /* Ignore comments */ | |
448 | if (buf[0] == '#') | |
449 | continue; | |
450 | ||
451 | /* Split into name=value */ | |
452 | p = strchr(buf, '='); | |
453 | if (!p) | |
454 | continue; | |
455 | *p++ = 0; | |
456 | ||
457 | /* Remove quotes and newline; un-escape */ | |
458 | value = p; | |
459 | q = p; | |
460 | while (*p) { | |
461 | if (*p == '\\') { | |
462 | ++p; | |
463 | if (!*p) | |
464 | break; | |
465 | *q++ = *p++; | |
466 | } else if (*p == '\'' || *p == '"' || | |
467 | *p == '\n') { | |
468 | ++p; | |
469 | } else { | |
470 | *q++ = *p++; | |
471 | } | |
472 | } | |
473 | *q = 0; | |
474 | ||
475 | if (!strcmp(buf, "NAME")) { | |
476 | p = strdup(value); | |
477 | if (!p) | |
478 | break; | |
479 | os_name = p; | |
480 | } else if (!strcmp(buf, "VERSION_ID")) { | |
481 | p = strdup(value); | |
482 | if (!p) | |
483 | break; | |
484 | os_major = p; | |
485 | } | |
486 | } | |
487 | fclose(file); | |
488 | return; | |
489 | } | |
490 | ||
491 | /* Fallback for older RH/SUSE releases */ | |
cc04acf5 KS |
492 | file = fopen("/etc/SuSE-release", "r"); |
493 | if (file != NULL) | |
494 | goto kvp_osinfo_found; | |
495 | file = fopen("/etc/redhat-release", "r"); | |
496 | if (file != NULL) | |
497 | goto kvp_osinfo_found; | |
cc04acf5 KS |
498 | |
499 | /* | |
500 | * We don't have information about the os. | |
501 | */ | |
cc04acf5 KS |
502 | return; |
503 | ||
504 | kvp_osinfo_found: | |
7989f7d5 OH |
505 | /* up to three lines */ |
506 | p = fgets(buf, sizeof(buf), file); | |
507 | if (p) { | |
508 | p = strchr(buf, '\n'); | |
509 | if (p) | |
510 | *p = '\0'; | |
511 | p = strdup(buf); | |
512 | if (!p) | |
513 | goto done; | |
514 | os_name = p; | |
515 | ||
516 | /* second line */ | |
517 | p = fgets(buf, sizeof(buf), file); | |
518 | if (p) { | |
519 | p = strchr(buf, '\n'); | |
520 | if (p) | |
521 | *p = '\0'; | |
522 | p = strdup(buf); | |
523 | if (!p) | |
524 | goto done; | |
525 | os_major = p; | |
526 | ||
527 | /* third line */ | |
528 | p = fgets(buf, sizeof(buf), file); | |
529 | if (p) { | |
530 | p = strchr(buf, '\n'); | |
531 | if (p) | |
532 | *p = '\0'; | |
533 | p = strdup(buf); | |
534 | if (p) | |
535 | os_minor = p; | |
536 | } | |
537 | } | |
538 | } | |
539 | ||
540 | done: | |
cc04acf5 KS |
541 | fclose(file); |
542 | return; | |
543 | } | |
544 | ||
32061b4d S |
545 | |
546 | ||
547 | /* | |
548 | * Retrieve an interface name corresponding to the specified guid. | |
549 | * If there is a match, the function returns a pointer | |
550 | * to the interface name and if not, a NULL is returned. | |
551 | * If a match is found, the caller is responsible for | |
552 | * freeing the memory. | |
553 | */ | |
554 | ||
555 | static char *kvp_get_if_name(char *guid) | |
556 | { | |
557 | DIR *dir; | |
558 | struct dirent *entry; | |
559 | FILE *file; | |
a1a7ea6b | 560 | char *p, *x; |
32061b4d S |
561 | char *if_name = NULL; |
562 | char buf[256]; | |
a1a7ea6b | 563 | char dev_id[PATH_MAX]; |
32061b4d | 564 | |
a1a7ea6b | 565 | dir = opendir(KVP_NET_DIR); |
32061b4d S |
566 | if (dir == NULL) |
567 | return NULL; | |
568 | ||
32061b4d S |
569 | while ((entry = readdir(dir)) != NULL) { |
570 | /* | |
571 | * Set the state for the next pass. | |
572 | */ | |
a1a7ea6b VK |
573 | snprintf(dev_id, sizeof(dev_id), "%s%s/device/device_id", |
574 | KVP_NET_DIR, entry->d_name); | |
32061b4d S |
575 | |
576 | file = fopen(dev_id, "r"); | |
577 | if (file == NULL) | |
578 | continue; | |
579 | ||
580 | p = fgets(buf, sizeof(buf), file); | |
581 | if (p) { | |
582 | x = strchr(p, '\n'); | |
583 | if (x) | |
584 | *x = '\0'; | |
585 | ||
586 | if (!strcmp(p, guid)) { | |
587 | /* | |
588 | * Found the guid match; return the interface | |
589 | * name. The caller will free the memory. | |
590 | */ | |
591 | if_name = strdup(entry->d_name); | |
592 | fclose(file); | |
593 | break; | |
594 | } | |
595 | } | |
596 | fclose(file); | |
597 | } | |
598 | ||
599 | closedir(dir); | |
600 | return if_name; | |
601 | } | |
602 | ||
603 | /* | |
604 | * Retrieve the MAC address given the interface name. | |
605 | */ | |
606 | ||
607 | static char *kvp_if_name_to_mac(char *if_name) | |
608 | { | |
609 | FILE *file; | |
610 | char *p, *x; | |
611 | char buf[256]; | |
a1a7ea6b | 612 | char addr_file[PATH_MAX]; |
69258c05 | 613 | unsigned int i; |
32061b4d S |
614 | char *mac_addr = NULL; |
615 | ||
a1a7ea6b VK |
616 | snprintf(addr_file, sizeof(addr_file), "%s%s%s", KVP_NET_DIR, |
617 | if_name, "/address"); | |
32061b4d S |
618 | |
619 | file = fopen(addr_file, "r"); | |
620 | if (file == NULL) | |
621 | return NULL; | |
622 | ||
623 | p = fgets(buf, sizeof(buf), file); | |
624 | if (p) { | |
625 | x = strchr(p, '\n'); | |
626 | if (x) | |
627 | *x = '\0'; | |
628 | for (i = 0; i < strlen(p); i++) | |
629 | p[i] = toupper(p[i]); | |
630 | mac_addr = strdup(p); | |
631 | } | |
632 | ||
633 | fclose(file); | |
634 | return mac_addr; | |
635 | } | |
636 | ||
4a52c4af | 637 | static void kvp_process_ipconfig_file(char *cmd, |
69258c05 | 638 | char *config_buf, unsigned int len, |
4a52c4af S |
639 | int element_size, int offset) |
640 | { | |
641 | char buf[256]; | |
642 | char *p; | |
643 | char *x; | |
644 | FILE *file; | |
645 | ||
646 | /* | |
647 | * First execute the command. | |
648 | */ | |
649 | file = popen(cmd, "r"); | |
650 | if (file == NULL) | |
651 | return; | |
652 | ||
653 | if (offset == 0) | |
654 | memset(config_buf, 0, len); | |
655 | while ((p = fgets(buf, sizeof(buf), file)) != NULL) { | |
69258c05 | 656 | if (len < strlen(config_buf) + element_size + 1) |
4a52c4af S |
657 | break; |
658 | ||
659 | x = strchr(p, '\n'); | |
f14e600a TH |
660 | if (x) |
661 | *x = '\0'; | |
662 | ||
4a52c4af S |
663 | strcat(config_buf, p); |
664 | strcat(config_buf, ";"); | |
665 | } | |
666 | pclose(file); | |
667 | } | |
668 | ||
669 | static void kvp_get_ipconfig_info(char *if_name, | |
670 | struct hv_kvp_ipaddr_value *buffer) | |
671 | { | |
672 | char cmd[512]; | |
c0503725 S |
673 | char dhcp_info[128]; |
674 | char *p; | |
675 | FILE *file; | |
4a52c4af S |
676 | |
677 | /* | |
678 | * Get the address of default gateway (ipv4). | |
679 | */ | |
680 | sprintf(cmd, "%s %s", "ip route show dev", if_name); | |
681 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
682 | ||
683 | /* | |
684 | * Execute the command to gather gateway info. | |
685 | */ | |
686 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
687 | (MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0); | |
688 | ||
689 | /* | |
690 | * Get the address of default gateway (ipv6). | |
691 | */ | |
692 | sprintf(cmd, "%s %s", "ip -f inet6 route show dev", if_name); | |
693 | strcat(cmd, " | awk '/default/ {print $3 }'"); | |
694 | ||
695 | /* | |
696 | * Execute the command to gather gateway info (ipv6). | |
697 | */ | |
698 | kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way, | |
699 | (MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1); | |
700 | ||
96929887 S |
701 | |
702 | /* | |
2d35c660 | 703 | * Gather the DNS state. |
96929887 S |
704 | * Since there is no standard way to get this information |
705 | * across various distributions of interest; we just invoke | |
706 | * an external script that needs to be ported across distros | |
707 | * of interest. | |
708 | * | |
709 | * Following is the expected format of the information from the script: | |
710 | * | |
711 | * ipaddr1 (nameserver1) | |
712 | * ipaddr2 (nameserver2) | |
713 | * . | |
714 | * . | |
715 | */ | |
716 | ||
2eb72d4b | 717 | sprintf(cmd, KVP_SCRIPTS_PATH "%s", "hv_get_dns_info"); |
96929887 S |
718 | |
719 | /* | |
720 | * Execute the command to gather DNS info. | |
721 | */ | |
722 | kvp_process_ipconfig_file(cmd, (char *)buffer->dns_addr, | |
723 | (MAX_IP_ADDR_SIZE * 2), INET_ADDRSTRLEN, 0); | |
c0503725 S |
724 | |
725 | /* | |
726 | * Gather the DHCP state. | |
727 | * We will gather this state by invoking an external script. | |
728 | * The parameter to the script is the interface name. | |
729 | * Here is the expected output: | |
730 | * | |
731 | * Enabled: DHCP enabled. | |
732 | */ | |
733 | ||
2eb72d4b | 734 | sprintf(cmd, KVP_SCRIPTS_PATH "%s %s", "hv_get_dhcp_info", if_name); |
c0503725 S |
735 | |
736 | file = popen(cmd, "r"); | |
737 | if (file == NULL) | |
738 | return; | |
739 | ||
740 | p = fgets(dhcp_info, sizeof(dhcp_info), file); | |
741 | if (p == NULL) { | |
742 | pclose(file); | |
743 | return; | |
744 | } | |
745 | ||
746 | if (!strncmp(p, "Enabled", 7)) | |
747 | buffer->dhcp_enabled = 1; | |
748 | else | |
749 | buffer->dhcp_enabled = 0; | |
750 | ||
751 | pclose(file); | |
4a52c4af S |
752 | } |
753 | ||
754 | ||
6a60a6a8 S |
755 | static unsigned int hweight32(unsigned int *w) |
756 | { | |
757 | unsigned int res = *w - ((*w >> 1) & 0x55555555); | |
758 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); | |
759 | res = (res + (res >> 4)) & 0x0F0F0F0F; | |
760 | res = res + (res >> 8); | |
761 | return (res + (res >> 16)) & 0x000000FF; | |
762 | } | |
763 | ||
af733015 S |
764 | static int kvp_process_ip_address(void *addrp, |
765 | int family, char *buffer, | |
766 | int length, int *offset) | |
767 | { | |
768 | struct sockaddr_in *addr; | |
769 | struct sockaddr_in6 *addr6; | |
770 | int addr_length; | |
771 | char tmp[50]; | |
772 | const char *str; | |
773 | ||
774 | if (family == AF_INET) { | |
775 | addr = (struct sockaddr_in *)addrp; | |
776 | str = inet_ntop(family, &addr->sin_addr, tmp, 50); | |
777 | addr_length = INET_ADDRSTRLEN; | |
778 | } else { | |
779 | addr6 = (struct sockaddr_in6 *)addrp; | |
780 | str = inet_ntop(family, &addr6->sin6_addr.s6_addr, tmp, 50); | |
781 | addr_length = INET6_ADDRSTRLEN; | |
782 | } | |
783 | ||
3321e738 | 784 | if ((length - *offset) < addr_length + 2) |
16e87100 | 785 | return HV_E_FAIL; |
af733015 S |
786 | if (str == NULL) { |
787 | strcpy(buffer, "inet_ntop failed\n"); | |
16e87100 | 788 | return HV_E_FAIL; |
af733015 S |
789 | } |
790 | if (*offset == 0) | |
791 | strcpy(buffer, tmp); | |
3321e738 S |
792 | else { |
793 | strcat(buffer, ";"); | |
af733015 | 794 | strcat(buffer, tmp); |
3321e738 | 795 | } |
af733015 S |
796 | |
797 | *offset += strlen(str) + 1; | |
3321e738 | 798 | |
af733015 S |
799 | return 0; |
800 | } | |
801 | ||
cc04acf5 | 802 | static int |
4a3b97e5 | 803 | kvp_get_ip_info(int family, char *if_name, int op, |
69258c05 | 804 | void *out_buffer, unsigned int length) |
cc04acf5 KS |
805 | { |
806 | struct ifaddrs *ifap; | |
807 | struct ifaddrs *curp; | |
cc04acf5 | 808 | int offset = 0; |
04405784 | 809 | int sn_offset = 0; |
cc04acf5 | 810 | int error = 0; |
0ecaa198 | 811 | char *buffer; |
89eb4d8d | 812 | struct hv_kvp_ipaddr_value *ip_buffer = NULL; |
6a60a6a8 S |
813 | char cidr_mask[5]; /* /xyz */ |
814 | int weight; | |
815 | int i; | |
816 | unsigned int *w; | |
817 | char *sn_str; | |
818 | struct sockaddr_in6 *addr6; | |
0ecaa198 S |
819 | |
820 | if (op == KVP_OP_ENUMERATE) { | |
821 | buffer = out_buffer; | |
822 | } else { | |
823 | ip_buffer = out_buffer; | |
824 | buffer = (char *)ip_buffer->ip_addr; | |
825 | ip_buffer->addr_family = 0; | |
826 | } | |
cc04acf5 KS |
827 | /* |
828 | * On entry into this function, the buffer is capable of holding the | |
0ecaa198 | 829 | * maximum key value. |
cc04acf5 KS |
830 | */ |
831 | ||
832 | if (getifaddrs(&ifap)) { | |
833 | strcpy(buffer, "getifaddrs failed\n"); | |
16e87100 | 834 | return HV_E_FAIL; |
cc04acf5 KS |
835 | } |
836 | ||
837 | curp = ifap; | |
838 | while (curp != NULL) { | |
0ecaa198 S |
839 | if (curp->ifa_addr == NULL) { |
840 | curp = curp->ifa_next; | |
841 | continue; | |
842 | } | |
cc04acf5 | 843 | |
0ecaa198 S |
844 | if ((if_name != NULL) && |
845 | (strncmp(curp->ifa_name, if_name, strlen(if_name)))) { | |
846 | /* | |
847 | * We want info about a specific interface; | |
848 | * just continue. | |
849 | */ | |
850 | curp = curp->ifa_next; | |
851 | continue; | |
852 | } | |
cc04acf5 | 853 | |
0ecaa198 S |
854 | /* |
855 | * We only support two address families: AF_INET and AF_INET6. | |
856 | * If a family value of 0 is specified, we collect both | |
857 | * supported address families; if not we gather info on | |
858 | * the specified address family. | |
859 | */ | |
3321e738 S |
860 | if ((((family != 0) && |
861 | (curp->ifa_addr->sa_family != family))) || | |
862 | (curp->ifa_flags & IFF_LOOPBACK)) { | |
0ecaa198 S |
863 | curp = curp->ifa_next; |
864 | continue; | |
865 | } | |
866 | if ((curp->ifa_addr->sa_family != AF_INET) && | |
867 | (curp->ifa_addr->sa_family != AF_INET6)) { | |
868 | curp = curp->ifa_next; | |
869 | continue; | |
870 | } | |
871 | ||
0d5b6b19 S |
872 | if (op == KVP_OP_GET_IP_INFO) { |
873 | /* | |
874 | * Gather info other than the IP address. | |
875 | * IP address info will be gathered later. | |
876 | */ | |
04405784 | 877 | if (curp->ifa_addr->sa_family == AF_INET) { |
0d5b6b19 | 878 | ip_buffer->addr_family |= ADDR_FAMILY_IPV4; |
04405784 S |
879 | /* |
880 | * Get subnet info. | |
881 | */ | |
882 | error = kvp_process_ip_address( | |
883 | curp->ifa_netmask, | |
884 | AF_INET, | |
885 | (char *) | |
886 | ip_buffer->sub_net, | |
887 | length, | |
888 | &sn_offset); | |
889 | if (error) | |
890 | goto gather_ipaddr; | |
891 | } else { | |
0d5b6b19 | 892 | ip_buffer->addr_family |= ADDR_FAMILY_IPV6; |
6a60a6a8 | 893 | |
04405784 | 894 | /* |
6a60a6a8 | 895 | * Get subnet info in CIDR format. |
04405784 | 896 | */ |
6a60a6a8 S |
897 | weight = 0; |
898 | sn_str = (char *)ip_buffer->sub_net; | |
899 | addr6 = (struct sockaddr_in6 *) | |
900 | curp->ifa_netmask; | |
901 | w = addr6->sin6_addr.s6_addr32; | |
902 | ||
903 | for (i = 0; i < 4; i++) | |
904 | weight += hweight32(&w[i]); | |
905 | ||
906 | sprintf(cidr_mask, "/%d", weight); | |
69258c05 | 907 | if (length < sn_offset + strlen(cidr_mask) + 1) |
04405784 | 908 | goto gather_ipaddr; |
6a60a6a8 S |
909 | |
910 | if (sn_offset == 0) | |
911 | strcpy(sn_str, cidr_mask); | |
ed4bb974 S |
912 | else { |
913 | strcat((char *)ip_buffer->sub_net, ";"); | |
6a60a6a8 | 914 | strcat(sn_str, cidr_mask); |
ed4bb974 | 915 | } |
6a60a6a8 | 916 | sn_offset += strlen(sn_str) + 1; |
04405784 | 917 | } |
4a52c4af S |
918 | |
919 | /* | |
920 | * Collect other ip related configuration info. | |
921 | */ | |
922 | ||
923 | kvp_get_ipconfig_info(if_name, ip_buffer); | |
0d5b6b19 S |
924 | } |
925 | ||
04405784 | 926 | gather_ipaddr: |
af733015 S |
927 | error = kvp_process_ip_address(curp->ifa_addr, |
928 | curp->ifa_addr->sa_family, | |
929 | buffer, | |
930 | length, &offset); | |
931 | if (error) | |
932 | goto getaddr_done; | |
0ecaa198 | 933 | |
cc04acf5 KS |
934 | curp = curp->ifa_next; |
935 | } | |
936 | ||
937 | getaddr_done: | |
938 | freeifaddrs(ifap); | |
939 | return error; | |
940 | } | |
941 | ||
4ba63412 HZ |
942 | /* |
943 | * Retrieve the IP given the MAC address. | |
944 | */ | |
945 | static int kvp_mac_to_ip(struct hv_kvp_ipaddr_value *kvp_ip_val) | |
946 | { | |
947 | char *mac = (char *)kvp_ip_val->adapter_id; | |
948 | DIR *dir; | |
949 | struct dirent *entry; | |
950 | FILE *file; | |
951 | char *p, *x; | |
952 | char *if_name = NULL; | |
953 | char buf[256]; | |
954 | char dev_id[PATH_MAX]; | |
955 | unsigned int i; | |
956 | int error = HV_E_FAIL; | |
957 | ||
958 | dir = opendir(KVP_NET_DIR); | |
959 | if (dir == NULL) | |
960 | return HV_E_FAIL; | |
961 | ||
962 | while ((entry = readdir(dir)) != NULL) { | |
963 | /* | |
964 | * Set the state for the next pass. | |
965 | */ | |
966 | snprintf(dev_id, sizeof(dev_id), "%s%s/address", KVP_NET_DIR, | |
967 | entry->d_name); | |
968 | ||
969 | file = fopen(dev_id, "r"); | |
970 | if (file == NULL) | |
971 | continue; | |
972 | ||
973 | p = fgets(buf, sizeof(buf), file); | |
974 | fclose(file); | |
975 | if (!p) | |
976 | continue; | |
977 | ||
978 | x = strchr(p, '\n'); | |
979 | if (x) | |
980 | *x = '\0'; | |
981 | ||
982 | for (i = 0; i < strlen(p); i++) | |
983 | p[i] = toupper(p[i]); | |
984 | ||
985 | if (strcmp(p, mac)) | |
986 | continue; | |
987 | ||
988 | /* | |
989 | * Found the MAC match. | |
990 | * A NIC (e.g. VF) matching the MAC, but without IP, is skipped. | |
991 | */ | |
992 | if_name = entry->d_name; | |
993 | if (!if_name) | |
994 | continue; | |
995 | ||
996 | error = kvp_get_ip_info(0, if_name, KVP_OP_GET_IP_INFO, | |
997 | kvp_ip_val, MAX_IP_ADDR_SIZE * 2); | |
998 | ||
999 | if (!error && strlen((char *)kvp_ip_val->ip_addr)) | |
1000 | break; | |
1001 | } | |
1002 | ||
1003 | closedir(dir); | |
1004 | return error; | |
1005 | } | |
cc04acf5 | 1006 | |
32061b4d S |
1007 | static int expand_ipv6(char *addr, int type) |
1008 | { | |
1009 | int ret; | |
1010 | struct in6_addr v6_addr; | |
1011 | ||
1012 | ret = inet_pton(AF_INET6, addr, &v6_addr); | |
1013 | ||
1014 | if (ret != 1) { | |
1015 | if (type == NETMASK) | |
1016 | return 1; | |
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | sprintf(addr, "%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:" | |
1021 | "%02x%02x:%02x%02x:%02x%02x", | |
1022 | (int)v6_addr.s6_addr[0], (int)v6_addr.s6_addr[1], | |
1023 | (int)v6_addr.s6_addr[2], (int)v6_addr.s6_addr[3], | |
1024 | (int)v6_addr.s6_addr[4], (int)v6_addr.s6_addr[5], | |
1025 | (int)v6_addr.s6_addr[6], (int)v6_addr.s6_addr[7], | |
1026 | (int)v6_addr.s6_addr[8], (int)v6_addr.s6_addr[9], | |
1027 | (int)v6_addr.s6_addr[10], (int)v6_addr.s6_addr[11], | |
1028 | (int)v6_addr.s6_addr[12], (int)v6_addr.s6_addr[13], | |
1029 | (int)v6_addr.s6_addr[14], (int)v6_addr.s6_addr[15]); | |
1030 | ||
1031 | return 1; | |
1032 | ||
1033 | } | |
1034 | ||
1035 | static int is_ipv4(char *addr) | |
1036 | { | |
1037 | int ret; | |
1038 | struct in_addr ipv4_addr; | |
1039 | ||
1040 | ret = inet_pton(AF_INET, addr, &ipv4_addr); | |
1041 | ||
1042 | if (ret == 1) | |
1043 | return 1; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | static int parse_ip_val_buffer(char *in_buf, int *offset, | |
1048 | char *out_buf, int out_len) | |
1049 | { | |
1050 | char *x; | |
1051 | char *start; | |
1052 | ||
1053 | /* | |
2d35c660 | 1054 | * in_buf has sequence of characters that are separated by |
32061b4d S |
1055 | * the character ';'. The last sequence does not have the |
1056 | * terminating ";" character. | |
1057 | */ | |
1058 | start = in_buf + *offset; | |
1059 | ||
1060 | x = strchr(start, ';'); | |
1061 | if (x) | |
1062 | *x = 0; | |
1063 | else | |
1064 | x = start + strlen(start); | |
1065 | ||
1066 | if (strlen(start) != 0) { | |
1067 | int i = 0; | |
1068 | /* | |
1069 | * Get rid of leading spaces. | |
1070 | */ | |
1071 | while (start[i] == ' ') | |
1072 | i++; | |
1073 | ||
1074 | if ((x - start) <= out_len) { | |
1075 | strcpy(out_buf, (start + i)); | |
1076 | *offset += (x - start) + 1; | |
1077 | return 1; | |
1078 | } | |
1079 | } | |
1080 | return 0; | |
1081 | } | |
1082 | ||
1083 | static int kvp_write_file(FILE *f, char *s1, char *s2, char *s3) | |
1084 | { | |
1085 | int ret; | |
1086 | ||
1087 | ret = fprintf(f, "%s%s%s%s\n", s1, s2, "=", s3); | |
1088 | ||
1089 | if (ret < 0) | |
1090 | return HV_E_FAIL; | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | ||
1096 | static int process_ip_string(FILE *f, char *ip_string, int type) | |
1097 | { | |
1098 | int error = 0; | |
1099 | char addr[INET6_ADDRSTRLEN]; | |
1100 | int i = 0; | |
1101 | int j = 0; | |
1102 | char str[256]; | |
3619350c | 1103 | char sub_str[13]; |
32061b4d S |
1104 | int offset = 0; |
1105 | ||
1106 | memset(addr, 0, sizeof(addr)); | |
1107 | ||
1108 | while (parse_ip_val_buffer(ip_string, &offset, addr, | |
1109 | (MAX_IP_ADDR_SIZE * 2))) { | |
1110 | ||
1111 | sub_str[0] = 0; | |
1112 | if (is_ipv4(addr)) { | |
1113 | switch (type) { | |
1114 | case IPADDR: | |
1115 | snprintf(str, sizeof(str), "%s", "IPADDR"); | |
1116 | break; | |
1117 | case NETMASK: | |
1118 | snprintf(str, sizeof(str), "%s", "NETMASK"); | |
1119 | break; | |
1120 | case GATEWAY: | |
1121 | snprintf(str, sizeof(str), "%s", "GATEWAY"); | |
1122 | break; | |
1123 | case DNS: | |
1124 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1125 | break; | |
1126 | } | |
0783d72f TH |
1127 | |
1128 | if (type == DNS) { | |
32061b4d | 1129 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); |
0783d72f TH |
1130 | } else if (type == GATEWAY && i == 0) { |
1131 | ++i; | |
1132 | } else { | |
1133 | snprintf(sub_str, sizeof(sub_str), "%d", i++); | |
32061b4d S |
1134 | } |
1135 | ||
1136 | ||
1137 | } else if (expand_ipv6(addr, type)) { | |
1138 | switch (type) { | |
1139 | case IPADDR: | |
1140 | snprintf(str, sizeof(str), "%s", "IPV6ADDR"); | |
1141 | break; | |
1142 | case NETMASK: | |
1143 | snprintf(str, sizeof(str), "%s", "IPV6NETMASK"); | |
1144 | break; | |
1145 | case GATEWAY: | |
1146 | snprintf(str, sizeof(str), "%s", | |
1147 | "IPV6_DEFAULTGW"); | |
1148 | break; | |
1149 | case DNS: | |
1150 | snprintf(str, sizeof(str), "%s", "DNS"); | |
1151 | break; | |
1152 | } | |
0783d72f TH |
1153 | |
1154 | if (type == DNS) { | |
1155 | snprintf(sub_str, sizeof(sub_str), "%d", ++i); | |
1156 | } else if (j == 0) { | |
1157 | ++j; | |
1158 | } else { | |
1159 | snprintf(sub_str, sizeof(sub_str), "_%d", j++); | |
32061b4d S |
1160 | } |
1161 | } else { | |
1162 | return HV_INVALIDARG; | |
1163 | } | |
1164 | ||
1165 | error = kvp_write_file(f, str, sub_str, addr); | |
1166 | if (error) | |
1167 | return error; | |
1168 | memset(addr, 0, sizeof(addr)); | |
1169 | } | |
1170 | ||
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | static int kvp_set_ip_info(char *if_name, struct hv_kvp_ipaddr_value *new_val) | |
1175 | { | |
1176 | int error = 0; | |
a1a7ea6b | 1177 | char if_file[PATH_MAX]; |
32061b4d | 1178 | FILE *file; |
a1a7ea6b | 1179 | char cmd[PATH_MAX]; |
32061b4d | 1180 | char *mac_addr; |
4fcba780 | 1181 | int str_len; |
32061b4d S |
1182 | |
1183 | /* | |
1184 | * Set the configuration for the specified interface with | |
1185 | * the information provided. Since there is no standard | |
1186 | * way to configure an interface, we will have an external | |
1187 | * script that does the job of configuring the interface and | |
1188 | * flushing the configuration. | |
1189 | * | |
1190 | * The parameters passed to this external script are: | |
1191 | * 1. A configuration file that has the specified configuration. | |
1192 | * | |
1193 | * We will embed the name of the interface in the configuration | |
1194 | * file: ifcfg-ethx (where ethx is the interface name). | |
1195 | * | |
1196 | * The information provided here may be more than what is needed | |
1197 | * in a given distro to configure the interface and so are free | |
1198 | * ignore information that may not be relevant. | |
1199 | * | |
1200 | * Here is the format of the ip configuration file: | |
1201 | * | |
1202 | * HWADDR=macaddr | |
0783d72f TH |
1203 | * DEVICE=interface name |
1204 | * BOOTPROTO=<protocol> (where <protocol> is "dhcp" if DHCP is configured | |
1205 | * or "none" if no boot-time protocol should be used) | |
32061b4d | 1206 | * |
0783d72f TH |
1207 | * IPADDR0=ipaddr1 |
1208 | * IPADDR1=ipaddr2 | |
1209 | * IPADDRx=ipaddry (where y = x + 1) | |
32061b4d | 1210 | * |
0783d72f TH |
1211 | * NETMASK0=netmask1 |
1212 | * NETMASKx=netmasky (where y = x + 1) | |
32061b4d S |
1213 | * |
1214 | * GATEWAY=ipaddr1 | |
0783d72f | 1215 | * GATEWAYx=ipaddry (where y = x + 1) |
32061b4d S |
1216 | * |
1217 | * DNSx=ipaddrx (where first DNS address is tagged as DNS1 etc) | |
1218 | * | |
1219 | * IPV6 addresses will be tagged as IPV6ADDR, IPV6 gateway will be | |
1220 | * tagged as IPV6_DEFAULTGW and IPV6 NETMASK will be tagged as | |
1221 | * IPV6NETMASK. | |
1222 | * | |
1223 | * The host can specify multiple ipv4 and ipv6 addresses to be | |
1224 | * configured for the interface. Furthermore, the configuration | |
1225 | * needs to be persistent. A subsequent GET call on the interface | |
1226 | * is expected to return the configuration that is set via the SET | |
1227 | * call. | |
1228 | */ | |
1229 | ||
1230 | snprintf(if_file, sizeof(if_file), "%s%s%s", KVP_CONFIG_LOC, | |
40424f5f | 1231 | "/ifcfg-", if_name); |
32061b4d S |
1232 | |
1233 | file = fopen(if_file, "w"); | |
1234 | ||
1235 | if (file == NULL) { | |
12e50c30 TH |
1236 | syslog(LOG_ERR, "Failed to open config file; error: %d %s", |
1237 | errno, strerror(errno)); | |
32061b4d S |
1238 | return HV_E_FAIL; |
1239 | } | |
1240 | ||
1241 | /* | |
1242 | * First write out the MAC address. | |
1243 | */ | |
1244 | ||
1245 | mac_addr = kvp_if_name_to_mac(if_name); | |
1246 | if (mac_addr == NULL) { | |
1247 | error = HV_E_FAIL; | |
1248 | goto setval_error; | |
1249 | } | |
1250 | ||
1251 | error = kvp_write_file(file, "HWADDR", "", mac_addr); | |
57969af0 | 1252 | free(mac_addr); |
32061b4d S |
1253 | if (error) |
1254 | goto setval_error; | |
1255 | ||
0783d72f | 1256 | error = kvp_write_file(file, "DEVICE", "", if_name); |
32061b4d S |
1257 | if (error) |
1258 | goto setval_error; | |
1259 | ||
787d6182 DC |
1260 | /* |
1261 | * The dhcp_enabled flag is only for IPv4. In the case the host only | |
1262 | * injects an IPv6 address, the flag is true, but we still need to | |
1263 | * proceed to parse and pass the IPv6 information to the | |
1264 | * disto-specific script hv_set_ifconfig. | |
1265 | */ | |
32061b4d | 1266 | if (new_val->dhcp_enabled) { |
0783d72f | 1267 | error = kvp_write_file(file, "BOOTPROTO", "", "dhcp"); |
32061b4d S |
1268 | if (error) |
1269 | goto setval_error; | |
1270 | ||
0783d72f TH |
1271 | } else { |
1272 | error = kvp_write_file(file, "BOOTPROTO", "", "none"); | |
1273 | if (error) | |
1274 | goto setval_error; | |
32061b4d S |
1275 | } |
1276 | ||
1277 | /* | |
1278 | * Write the configuration for ipaddress, netmask, gateway and | |
1279 | * name servers. | |
1280 | */ | |
1281 | ||
1282 | error = process_ip_string(file, (char *)new_val->ip_addr, IPADDR); | |
1283 | if (error) | |
1284 | goto setval_error; | |
1285 | ||
1286 | error = process_ip_string(file, (char *)new_val->sub_net, NETMASK); | |
1287 | if (error) | |
1288 | goto setval_error; | |
1289 | ||
1290 | error = process_ip_string(file, (char *)new_val->gate_way, GATEWAY); | |
1291 | if (error) | |
1292 | goto setval_error; | |
1293 | ||
1294 | error = process_ip_string(file, (char *)new_val->dns_addr, DNS); | |
1295 | if (error) | |
1296 | goto setval_error; | |
1297 | ||
32061b4d S |
1298 | fclose(file); |
1299 | ||
1300 | /* | |
1301 | * Now that we have populated the configuration file, | |
1302 | * invoke the external script to do its magic. | |
1303 | */ | |
1304 | ||
4fcba780 DC |
1305 | str_len = snprintf(cmd, sizeof(cmd), KVP_SCRIPTS_PATH "%s %s", |
1306 | "hv_set_ifconfig", if_file); | |
1307 | /* | |
1308 | * This is a little overcautious, but it's necessary to suppress some | |
1309 | * false warnings from gcc 8.0.1. | |
1310 | */ | |
1311 | if (str_len <= 0 || (unsigned int)str_len >= sizeof(cmd)) { | |
1312 | syslog(LOG_ERR, "Cmd '%s' (len=%d) may be too long", | |
1313 | cmd, str_len); | |
1314 | return HV_E_FAIL; | |
1315 | } | |
1316 | ||
d3b688c6 OH |
1317 | if (system(cmd)) { |
1318 | syslog(LOG_ERR, "Failed to execute cmd '%s'; error: %d %s", | |
1319 | cmd, errno, strerror(errno)); | |
1320 | return HV_E_FAIL; | |
1321 | } | |
32061b4d S |
1322 | return 0; |
1323 | ||
1324 | setval_error: | |
1325 | syslog(LOG_ERR, "Failed to write config file"); | |
32061b4d S |
1326 | fclose(file); |
1327 | return error; | |
1328 | } | |
1329 | ||
1330 | ||
58125210 | 1331 | static void |
cc04acf5 KS |
1332 | kvp_get_domain_name(char *buffer, int length) |
1333 | { | |
1334 | struct addrinfo hints, *info ; | |
cc04acf5 KS |
1335 | int error = 0; |
1336 | ||
5be528c2 | 1337 | gethostname(buffer, length); |
cc04acf5 KS |
1338 | memset(&hints, 0, sizeof(hints)); |
1339 | hints.ai_family = AF_INET; /*Get only ipv4 addrinfo. */ | |
1340 | hints.ai_socktype = SOCK_STREAM; | |
1341 | hints.ai_flags = AI_CANONNAME; | |
1342 | ||
5be528c2 | 1343 | error = getaddrinfo(buffer, NULL, &hints, &info); |
cc04acf5 | 1344 | if (error != 0) { |
58125210 OH |
1345 | snprintf(buffer, length, "getaddrinfo failed: 0x%x %s", |
1346 | error, gai_strerror(error)); | |
1347 | return; | |
cc04acf5 | 1348 | } |
58125210 | 1349 | snprintf(buffer, length, "%s", info->ai_canonname); |
cc04acf5 | 1350 | freeaddrinfo(info); |
cc04acf5 KS |
1351 | } |
1352 | ||
170f4bea VK |
1353 | void print_usage(char *argv[]) |
1354 | { | |
1355 | fprintf(stderr, "Usage: %s [options]\n" | |
1356 | "Options are:\n" | |
1357 | " -n, --no-daemon stay in foreground, don't daemonize\n" | |
1358 | " -h, --help print this help\n", argv[0]); | |
1359 | } | |
1360 | ||
1361 | int main(int argc, char *argv[]) | |
cc04acf5 | 1362 | { |
9fc3c01a | 1363 | int kvp_fd = -1, len; |
cc04acf5 | 1364 | int error; |
cc04acf5 | 1365 | struct pollfd pfd; |
8ddca808 VK |
1366 | char *p; |
1367 | struct hv_kvp_msg hv_msg[1]; | |
cc04acf5 KS |
1368 | char *key_value; |
1369 | char *key_name; | |
b47a81dc S |
1370 | int op; |
1371 | int pool; | |
32061b4d S |
1372 | char *if_name; |
1373 | struct hv_kvp_ipaddr_value *kvp_ip_val; | |
170f4bea VK |
1374 | int daemonize = 1, long_index = 0, opt; |
1375 | ||
1376 | static struct option long_options[] = { | |
1377 | {"help", no_argument, 0, 'h' }, | |
1378 | {"no-daemon", no_argument, 0, 'n' }, | |
1379 | {0, 0, 0, 0 } | |
1380 | }; | |
1381 | ||
1382 | while ((opt = getopt_long(argc, argv, "hn", long_options, | |
1383 | &long_index)) != -1) { | |
1384 | switch (opt) { | |
1385 | case 'n': | |
1386 | daemonize = 0; | |
1387 | break; | |
1388 | case 'h': | |
b0995156 AV |
1389 | print_usage(argv); |
1390 | exit(0); | |
170f4bea VK |
1391 | default: |
1392 | print_usage(argv); | |
1393 | exit(EXIT_FAILURE); | |
1394 | } | |
1395 | } | |
cc04acf5 | 1396 | |
170f4bea | 1397 | if (daemonize && daemon(1, 0)) |
00663d73 | 1398 | return 1; |
170f4bea | 1399 | |
cc04acf5 KS |
1400 | openlog("KVP", 0, LOG_USER); |
1401 | syslog(LOG_INFO, "KVP starting; pid is:%d", getpid()); | |
b4919a5f | 1402 | |
cc04acf5 KS |
1403 | /* |
1404 | * Retrieve OS release information. | |
1405 | */ | |
1406 | kvp_get_os_info(); | |
58125210 OH |
1407 | /* |
1408 | * Cache Fully Qualified Domain Name because getaddrinfo takes an | |
1409 | * unpredictable amount of time to finish. | |
1410 | */ | |
1411 | kvp_get_domain_name(full_domain_name, sizeof(full_domain_name)); | |
cc04acf5 | 1412 | |
db425334 S |
1413 | if (kvp_file_init()) { |
1414 | syslog(LOG_ERR, "Failed to initialize the pools"); | |
6bb22fea | 1415 | exit(EXIT_FAILURE); |
db425334 S |
1416 | } |
1417 | ||
9fc3c01a DC |
1418 | reopen_kvp_fd: |
1419 | if (kvp_fd != -1) | |
1420 | close(kvp_fd); | |
1421 | in_hand_shake = 1; | |
1422 | kvp_fd = open("/dev/vmbus/hv_kvp", O_RDWR | O_CLOEXEC); | |
1423 | ||
1424 | if (kvp_fd < 0) { | |
1425 | syslog(LOG_ERR, "open /dev/vmbus/hv_kvp failed; error: %d %s", | |
1426 | errno, strerror(errno)); | |
1427 | exit(EXIT_FAILURE); | |
1428 | } | |
1429 | ||
cc04acf5 KS |
1430 | /* |
1431 | * Register ourselves with the kernel. | |
1432 | */ | |
b47a81dc | 1433 | hv_msg->kvp_hdr.operation = KVP_OP_REGISTER1; |
8ddca808 VK |
1434 | len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); |
1435 | if (len != sizeof(struct hv_kvp_msg)) { | |
1436 | syslog(LOG_ERR, "registration to kernel failed; error: %d %s", | |
1437 | errno, strerror(errno)); | |
1438 | close(kvp_fd); | |
6bb22fea | 1439 | exit(EXIT_FAILURE); |
cc04acf5 KS |
1440 | } |
1441 | ||
8ddca808 | 1442 | pfd.fd = kvp_fd; |
cc04acf5 KS |
1443 | |
1444 | while (1) { | |
1445 | pfd.events = POLLIN; | |
1446 | pfd.revents = 0; | |
4d81e307 TH |
1447 | |
1448 | if (poll(&pfd, 1, -1) < 0) { | |
1449 | syslog(LOG_ERR, "poll failed; error: %d %s", errno, strerror(errno)); | |
1450 | if (errno == EINVAL) { | |
8ddca808 | 1451 | close(kvp_fd); |
4d81e307 TH |
1452 | exit(EXIT_FAILURE); |
1453 | } | |
1454 | else | |
1455 | continue; | |
1456 | } | |
cc04acf5 | 1457 | |
8ddca808 | 1458 | len = read(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); |
4300f264 | 1459 | |
8ddca808 VK |
1460 | if (len != sizeof(struct hv_kvp_msg)) { |
1461 | syslog(LOG_ERR, "read failed; error:%d %s", | |
1462 | errno, strerror(errno)); | |
9fc3c01a | 1463 | goto reopen_kvp_fd; |
cc04acf5 KS |
1464 | } |
1465 | ||
b47a81dc S |
1466 | /* |
1467 | * We will use the KVP header information to pass back | |
1468 | * the error from this daemon. So, first copy the state | |
1469 | * and set the error code to success. | |
1470 | */ | |
1471 | op = hv_msg->kvp_hdr.operation; | |
1472 | pool = hv_msg->kvp_hdr.pool; | |
1473 | hv_msg->error = HV_S_OK; | |
1474 | ||
1475 | if ((in_hand_shake) && (op == KVP_OP_REGISTER1)) { | |
cc04acf5 KS |
1476 | /* |
1477 | * Driver is registering with us; stash away the version | |
1478 | * information. | |
1479 | */ | |
b47a81dc | 1480 | in_hand_shake = 0; |
e485ceac | 1481 | p = (char *)hv_msg->body.kvp_register.version; |
7989f7d5 | 1482 | lic_version = malloc(strlen(p) + 1); |
cc04acf5 | 1483 | if (lic_version) { |
7989f7d5 | 1484 | strcpy(lic_version, p); |
cc04acf5 | 1485 | syslog(LOG_INFO, "KVP LIC Version: %s", |
8ddca808 | 1486 | lic_version); |
cc04acf5 KS |
1487 | } else { |
1488 | syslog(LOG_ERR, "malloc failed"); | |
1489 | } | |
1490 | continue; | |
b47a81dc | 1491 | } |
cc04acf5 | 1492 | |
b47a81dc | 1493 | switch (op) { |
16e87100 S |
1494 | case KVP_OP_GET_IP_INFO: |
1495 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
16e87100 | 1496 | |
2d35c660 | 1497 | error = kvp_mac_to_ip(kvp_ip_val); |
16e87100 S |
1498 | |
1499 | if (error) | |
1500 | hv_msg->error = error; | |
1501 | ||
16e87100 S |
1502 | break; |
1503 | ||
32061b4d S |
1504 | case KVP_OP_SET_IP_INFO: |
1505 | kvp_ip_val = &hv_msg->body.kvp_ip_val; | |
1506 | if_name = kvp_get_if_name( | |
1507 | (char *)kvp_ip_val->adapter_id); | |
1508 | if (if_name == NULL) { | |
1509 | /* | |
1510 | * We could not map the guid to an | |
1511 | * interface name; return error. | |
1512 | */ | |
1513 | hv_msg->error = HV_GUID_NOTFOUND; | |
1514 | break; | |
1515 | } | |
1516 | error = kvp_set_ip_info(if_name, kvp_ip_val); | |
1517 | if (error) | |
1518 | hv_msg->error = error; | |
1519 | ||
1520 | free(if_name); | |
1521 | break; | |
1522 | ||
fa3d5b85 | 1523 | case KVP_OP_SET: |
b47a81dc | 1524 | if (kvp_key_add_or_modify(pool, |
db425334 S |
1525 | hv_msg->body.kvp_set.data.key, |
1526 | hv_msg->body.kvp_set.data.key_size, | |
1527 | hv_msg->body.kvp_set.data.value, | |
1528 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1529 | hv_msg->error = HV_S_CONT; |
db425334 S |
1530 | break; |
1531 | ||
fa3d5b85 | 1532 | case KVP_OP_GET: |
b47a81dc | 1533 | if (kvp_get_value(pool, |
db425334 S |
1534 | hv_msg->body.kvp_set.data.key, |
1535 | hv_msg->body.kvp_set.data.key_size, | |
1536 | hv_msg->body.kvp_set.data.value, | |
1537 | hv_msg->body.kvp_set.data.value_size)) | |
b47a81dc | 1538 | hv_msg->error = HV_S_CONT; |
db425334 S |
1539 | break; |
1540 | ||
fa3d5b85 | 1541 | case KVP_OP_DELETE: |
b47a81dc | 1542 | if (kvp_key_delete(pool, |
db425334 S |
1543 | hv_msg->body.kvp_delete.key, |
1544 | hv_msg->body.kvp_delete.key_size)) | |
b47a81dc | 1545 | hv_msg->error = HV_S_CONT; |
db425334 S |
1546 | break; |
1547 | ||
cc04acf5 | 1548 | default: |
26403354 | 1549 | break; |
cc04acf5 KS |
1550 | } |
1551 | ||
b47a81dc | 1552 | if (op != KVP_OP_ENUMERATE) |
fa3d5b85 S |
1553 | goto kvp_done; |
1554 | ||
adc80ae6 S |
1555 | /* |
1556 | * If the pool is KVP_POOL_AUTO, dynamically generate | |
1557 | * both the key and the value; if not read from the | |
1558 | * appropriate pool. | |
1559 | */ | |
b47a81dc S |
1560 | if (pool != KVP_POOL_AUTO) { |
1561 | if (kvp_pool_enumerate(pool, | |
adc80ae6 S |
1562 | hv_msg->body.kvp_enum_data.index, |
1563 | hv_msg->body.kvp_enum_data.data.key, | |
1564 | HV_KVP_EXCHANGE_MAX_KEY_SIZE, | |
1565 | hv_msg->body.kvp_enum_data.data.value, | |
b47a81dc S |
1566 | HV_KVP_EXCHANGE_MAX_VALUE_SIZE)) |
1567 | hv_msg->error = HV_S_CONT; | |
adc80ae6 S |
1568 | goto kvp_done; |
1569 | } | |
1570 | ||
26403354 S |
1571 | key_name = (char *)hv_msg->body.kvp_enum_data.data.key; |
1572 | key_value = (char *)hv_msg->body.kvp_enum_data.data.value; | |
cc04acf5 | 1573 | |
26403354 | 1574 | switch (hv_msg->body.kvp_enum_data.index) { |
cc04acf5 | 1575 | case FullyQualifiedDomainName: |
58125210 | 1576 | strcpy(key_value, full_domain_name); |
cc04acf5 KS |
1577 | strcpy(key_name, "FullyQualifiedDomainName"); |
1578 | break; | |
1579 | case IntegrationServicesVersion: | |
1580 | strcpy(key_name, "IntegrationServicesVersion"); | |
1581 | strcpy(key_value, lic_version); | |
1582 | break; | |
1583 | case NetworkAddressIPv4: | |
4a3b97e5 | 1584 | kvp_get_ip_info(AF_INET, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1585 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1586 | strcpy(key_name, "NetworkAddressIPv4"); |
1587 | break; | |
1588 | case NetworkAddressIPv6: | |
4a3b97e5 | 1589 | kvp_get_ip_info(AF_INET6, NULL, KVP_OP_ENUMERATE, |
0ecaa198 | 1590 | key_value, HV_KVP_EXCHANGE_MAX_VALUE_SIZE); |
cc04acf5 KS |
1591 | strcpy(key_name, "NetworkAddressIPv6"); |
1592 | break; | |
1593 | case OSBuildNumber: | |
1594 | strcpy(key_value, os_build); | |
1595 | strcpy(key_name, "OSBuildNumber"); | |
1596 | break; | |
1597 | case OSName: | |
1598 | strcpy(key_value, os_name); | |
1599 | strcpy(key_name, "OSName"); | |
1600 | break; | |
1601 | case OSMajorVersion: | |
1602 | strcpy(key_value, os_major); | |
1603 | strcpy(key_name, "OSMajorVersion"); | |
1604 | break; | |
1605 | case OSMinorVersion: | |
1606 | strcpy(key_value, os_minor); | |
1607 | strcpy(key_name, "OSMinorVersion"); | |
1608 | break; | |
1609 | case OSVersion: | |
f426a36c | 1610 | strcpy(key_value, os_version); |
cc04acf5 KS |
1611 | strcpy(key_name, "OSVersion"); |
1612 | break; | |
1613 | case ProcessorArchitecture: | |
1614 | strcpy(key_value, processor_arch); | |
1615 | strcpy(key_name, "ProcessorArchitecture"); | |
1616 | break; | |
1617 | default: | |
b47a81dc | 1618 | hv_msg->error = HV_S_CONT; |
cc04acf5 KS |
1619 | break; |
1620 | } | |
4300f264 | 1621 | |
9fc3c01a DC |
1622 | /* |
1623 | * Send the value back to the kernel. Note: the write() may | |
1624 | * return an error due to hibernation; we can ignore the error | |
1625 | * by resetting the dev file, i.e. closing and re-opening it. | |
1626 | */ | |
8ddca808 VK |
1627 | kvp_done: |
1628 | len = write(kvp_fd, hv_msg, sizeof(struct hv_kvp_msg)); | |
1629 | if (len != sizeof(struct hv_kvp_msg)) { | |
1630 | syslog(LOG_ERR, "write failed; error: %d %s", errno, | |
1631 | strerror(errno)); | |
9fc3c01a | 1632 | goto reopen_kvp_fd; |
cc04acf5 KS |
1633 | } |
1634 | } | |
1635 | ||
8ddca808 VK |
1636 | close(kvp_fd); |
1637 | exit(0); | |
cc04acf5 | 1638 | } |