3 // ----------------------------------------------------------------------------
6 // 1. the default tracking cookie expires in 1 year, but the persons are not
7 // removed from the db - this means the database only grows - ideally the
8 // database should be cleaned in registry_save() for both on-disk and
12 // i. Find all the PERSONs that have expired cookie
13 // ii. For each of their PERSON_URLs:
14 // - decrement the linked MACHINE links
15 // - if the linked MACHINE has no other links, remove the linked MACHINE too
16 // - remove the PERSON_URL
18 // 2. add protection to prevent abusing the registry by flooding it with
19 // requests to fill the memory and crash it.
21 // Possible protections:
22 // - limit the number of URLs per person
23 // - limit the number of URLs per machine
24 // - limit the number of persons
25 // - limit the number of machines
26 // - [DONE] limit the size of URLs
27 // - [DONE] limit the size of PERSON_URL names
28 // - limit the number of requests that add data to the registry,
29 // per client IP per hour
31 // 3. lower memory requirements
33 // - embed avl structures directly into registry objects, instead of DICTIONARY
34 // - store GUIDs in memory as UUID instead of char *
35 // (this will also remove the index hash, since UUIDs can be compared directly)
36 // - do not track persons using the demo machines only
37 // (i.e. start tracking them only when they access a non-demo machine)
38 // - [DONE] do not track custom dashboards by default
40 #define REGISTRY_URL_FLAGS_DEFAULT 0x00
41 #define REGISTRY_URL_FLAGS_EXPIRED 0x01
43 #define DICTIONARY_FLAGS DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE | DICTIONARY_FLAG_NAME_LINK_DONT_CLONE
45 // ----------------------------------------------------------------------------
51 char machine_guid[36 + 1];
53 // entries counters / statistics
54 unsigned long long persons_count;
55 unsigned long long machines_count;
56 unsigned long long usages_count;
57 unsigned long long urls_count;
58 unsigned long long persons_urls_count;
59 unsigned long long machines_urls_count;
60 unsigned long long log_count;
62 // memory counters / statistics
63 unsigned long long persons_memory;
64 unsigned long long machines_memory;
65 unsigned long long urls_memory;
66 unsigned long long persons_urls_memory;
67 unsigned long long machines_urls_memory;
70 unsigned long long save_registry_every_entries;
71 char *registry_domain;
73 char *registry_to_announce;
74 time_t persons_expiration; // seconds to expire idle persons
75 int verify_cookies_redirects;
77 size_t max_url_length;
78 size_t max_name_length;
84 char *machine_guid_filename;
90 DICTIONARY *persons; // dictionary of PERSON *, with key the PERSON.guid
91 DICTIONARY *machines; // dictionary of MACHINE *, with key the MACHINE.guid
92 DICTIONARY *urls; // dictionary of URL *, with key the URL.url
94 // concurrency locking
95 // we keep different locks for different things
96 // so that many tasks can be completed in parallel
97 pthread_mutex_t persons_lock;
98 pthread_mutex_t machines_lock;
99 pthread_mutex_t urls_lock;
100 pthread_mutex_t person_urls_lock;
101 pthread_mutex_t machine_urls_lock;
102 pthread_mutex_t log_lock;
106 // ----------------------------------------------------------------------------
108 // Save memory by de-duplicating URLs
109 // so instead of storing URLs all over the place
110 // we store them here and we keep pointers elsewhere
113 uint32_t links; // the number of links to this URL - when none is left, we free it
114 uint16_t len; // the length of the URL in bytes
115 char url[1]; // the URL - dynamically allocated to more size
117 typedef struct url URL;
120 // ----------------------------------------------------------------------------
121 // MACHINE structures
123 // For each MACHINE-URL pair we keep this
125 URL *url; // de-duplicated URL
126 // DICTIONARY *persons; // dictionary of PERSON *
129 uint32_t first_t; // the first time we saw this
130 uint32_t last_t; // the last time we saw this
131 uint32_t usages; // how many times this has been accessed
133 typedef struct machine_url MACHINE_URL;
137 char guid[36 + 1]; // the GUID
139 uint32_t links; // the number of PERSON_URLs linked to this machine
141 DICTIONARY *urls; // MACHINE_URL *
143 uint32_t first_t; // the first time we saw this
144 uint32_t last_t; // the last time we saw this
145 uint32_t usages; // how many times this has been accessed
147 typedef struct machine MACHINE;
150 // ----------------------------------------------------------------------------
153 // for each PERSON-URL pair we keep this
155 URL *url; // de-duplicated URL
156 MACHINE *machine; // link the MACHINE of this URL
159 uint32_t first_t; // the first time we saw this
160 uint32_t last_t; // the last time we saw this
161 uint32_t usages; // how many times this has been accessed
163 char name[1]; // the name of the URL, as known by the user
164 // dynamically allocated to fit properly
166 typedef struct person_url PERSON_URL;
170 char guid[36 + 1]; // the person GUID
172 DICTIONARY *urls; // dictionary of PERSON_URL *
174 uint32_t first_t; // the first time we saw this
175 uint32_t last_t; // the last time we saw this
176 uint32_t usages; // how many times this has been accessed
178 typedef struct person PERSON;
181 // ----------------------------------------------------------------------------
182 // REGISTRY concurrency locking
184 static inline void registry_persons_lock(void) {
185 pthread_mutex_lock(®istry.persons_lock);
188 static inline void registry_persons_unlock(void) {
189 pthread_mutex_unlock(®istry.persons_lock);
192 static inline void registry_machines_lock(void) {
193 pthread_mutex_lock(®istry.machines_lock);
196 static inline void registry_machines_unlock(void) {
197 pthread_mutex_unlock(®istry.machines_lock);
200 static inline void registry_urls_lock(void) {
201 pthread_mutex_lock(®istry.urls_lock);
204 static inline void registry_urls_unlock(void) {
205 pthread_mutex_unlock(®istry.urls_lock);
208 // ideally, we should not lock the whole registry for
209 // updating a person's urls.
210 // however, to save the memory required for keeping a
211 // mutex (40 bytes) per person, we do...
212 static inline void registry_person_urls_lock(PERSON *p) {
214 pthread_mutex_lock(®istry.person_urls_lock);
217 static inline void registry_person_urls_unlock(PERSON *p) {
219 pthread_mutex_unlock(®istry.person_urls_lock);
222 // ideally, we should not lock the whole registry for
223 // updating a machine's urls.
224 // however, to save the memory required for keeping a
225 // mutex (40 bytes) per machine, we do...
226 static inline void registry_machine_urls_lock(MACHINE *m) {
228 pthread_mutex_lock(®istry.machine_urls_lock);
231 static inline void registry_machine_urls_unlock(MACHINE *m) {
233 pthread_mutex_unlock(®istry.machine_urls_lock);
236 static inline void registry_log_lock(void) {
237 pthread_mutex_lock(®istry.log_lock);
240 static inline void registry_log_unlock(void) {
241 pthread_mutex_unlock(®istry.log_lock);
245 // ----------------------------------------------------------------------------
248 // parse a GUID and re-generated to be always lower case
249 // this is used as a protection against the variations of GUIDs
250 static inline int registry_regenerate_guid(const char *guid, char *result) {
252 if(unlikely(uuid_parse(guid, uuid) == -1)) {
253 info("Registry: GUID '%s' is not a valid GUID.", guid);
257 uuid_unparse_lower(uuid, result);
259 #ifdef NETDATA_INTERNAL_CHECKS
260 if(strcmp(guid, result))
261 info("Registry: source GUID '%s' and re-generated GUID '%s' differ!", guid, result);
262 #endif /* NETDATA_INTERNAL_CHECKS */
268 // make sure the names of the machines / URLs do not contain any tabs
269 // (which are used as our separator in the database files)
270 // and are properly trimmed (before and after)
271 static inline char *registry_fix_machine_name(char *name, size_t *len) {
272 char *s = name?name:"";
274 // skip leading spaces
275 while(*s && isspace(*s)) s++;
277 // make sure all spaces are a SPACE
280 if(unlikely(isspace(*t)))
286 // remove trailing spaces
301 static inline char *registry_fix_url(char *url, size_t *len) {
302 return registry_fix_machine_name(url, len);
306 // ----------------------------------------------------------------------------
307 // forward definition of functions
309 extern PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when);
310 extern PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when);
313 // ----------------------------------------------------------------------------
316 static inline URL *registry_url_allocate_nolock(const char *url, size_t urllen) {
317 // protection from too big URLs
318 if(urllen > registry.max_url_length)
319 urllen = registry.max_url_length;
321 debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): allocating %zu bytes", url, sizeof(URL) + urllen);
322 URL *u = mallocz(sizeof(URL) + urllen);
324 // a simple strcpy() should do the job
325 // but I prefer to be safe, since the caller specified urllen
326 u->len = (uint16_t)urllen;
327 strncpyz(u->url, url, u->len);
330 registry.urls_memory += sizeof(URL) + urllen;
332 debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): indexing it", url);
333 dictionary_set(registry.urls, u->url, u, sizeof(URL));
338 static inline URL *registry_url_get_nolock(const char *url, size_t urllen) {
339 debug(D_REGISTRY, "Registry: registry_url_get_nolock('%s')", url);
341 URL *u = dictionary_get(registry.urls, url);
343 u = registry_url_allocate_nolock(url, urllen);
344 registry.urls_count++;
350 static inline URL *registry_url_get(const char *url, size_t urllen) {
351 debug(D_REGISTRY, "Registry: registry_url_get('%s')", url);
353 registry_urls_lock();
355 URL *u = registry_url_get_nolock(url, urllen);
357 registry_urls_unlock();
362 static inline void registry_url_link_nolock(URL *u) {
364 debug(D_REGISTRY, "Registry: registry_url_link_nolock('%s'): URL has now %u links", u->url, u->links);
367 static inline void registry_url_unlink_nolock(URL *u) {
370 debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): No more links for this URL", u->url);
371 dictionary_del(registry.urls, u->url);
375 debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): URL has %u links left", u->url, u->links);
379 // ----------------------------------------------------------------------------
382 static inline MACHINE *registry_machine_find(const char *machine_guid) {
383 debug(D_REGISTRY, "Registry: registry_machine_find('%s')", machine_guid);
384 return dictionary_get(registry.machines, machine_guid);
387 static inline MACHINE_URL *registry_machine_url_allocate(MACHINE *m, URL *u, time_t when) {
388 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): allocating %zu bytes", m->guid, u->url, sizeof(MACHINE_URL));
390 MACHINE_URL *mu = mallocz(sizeof(MACHINE_URL));
392 // mu->persons = dictionary_create(DICTIONARY_FLAGS);
393 // dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
395 mu->first_t = mu->last_t = (uint32_t)when;
398 mu->flags = REGISTRY_URL_FLAGS_DEFAULT;
400 registry.machines_urls_memory += sizeof(MACHINE_URL);
402 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): indexing URL in machine", m->guid, u->url);
403 dictionary_set(m->urls, u->url, mu, sizeof(MACHINE_URL));
404 registry_url_link_nolock(u);
409 static inline MACHINE *registry_machine_allocate(const char *machine_guid, time_t when) {
410 debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating new machine, sizeof(MACHINE)=%zu", machine_guid, sizeof(MACHINE));
412 MACHINE *m = mallocz(sizeof(MACHINE));
414 strncpyz(m->guid, machine_guid, 36);
416 debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating dictionary of urls", machine_guid);
417 m->urls = dictionary_create(DICTIONARY_FLAGS);
419 m->first_t = m->last_t = (uint32_t)when;
422 registry.machines_memory += sizeof(MACHINE);
424 registry.machines_count++;
425 dictionary_set(registry.machines, m->guid, m, sizeof(MACHINE));
430 // 1. validate machine GUID
431 // 2. if it is valid, find it or create it and return it
432 // 3. if it is not valid, return NULL
433 static inline MACHINE *registry_machine_get(const char *machine_guid, time_t when) {
436 registry_machines_lock();
438 if(likely(machine_guid && *machine_guid)) {
439 // validate it is a GUID
441 if(unlikely(registry_regenerate_guid(machine_guid, buf) == -1))
442 info("Registry: machine guid '%s' is not a valid guid. Ignoring it.", machine_guid);
445 m = registry_machine_find(machine_guid);
446 if(!m) m = registry_machine_allocate(machine_guid, when);
450 registry_machines_unlock();
456 // ----------------------------------------------------------------------------
459 static inline PERSON *registry_person_find(const char *person_guid) {
460 debug(D_REGISTRY, "Registry: registry_person_find('%s')", person_guid);
461 return dictionary_get(registry.persons, person_guid);
464 static inline PERSON_URL *registry_person_url_allocate(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) {
465 // protection from too big names
466 if(namelen > registry.max_name_length)
467 namelen = registry.max_name_length;
469 debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url,
470 sizeof(PERSON_URL) + namelen);
472 PERSON_URL *pu = mallocz(sizeof(PERSON_URL) + namelen);
474 // a simple strcpy() should do the job
475 // but I prefer to be safe, since the caller specified urllen
476 strncpyz(pu->name, name, namelen);
479 pu->first_t = pu->last_t = when;
482 pu->flags = REGISTRY_URL_FLAGS_DEFAULT;
485 registry.persons_urls_memory += sizeof(PERSON_URL) + namelen;
487 debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): indexing URL in person", p->guid, m->guid, u->url);
488 dictionary_set(p->urls, u->url, pu, sizeof(PERSON_URL));
489 registry_url_link_nolock(u);
494 static inline PERSON_URL *registry_person_url_reallocate(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when, PERSON_URL *pu) {
495 // this function is needed to change the name of a PERSON_URL
497 debug(D_REGISTRY, "registry_person_url_reallocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url,
498 sizeof(PERSON_URL) + namelen);
500 PERSON_URL *tpu = registry_person_url_allocate(p, m, u, name, namelen, when);
501 tpu->first_t = pu->first_t;
502 tpu->last_t = pu->last_t;
503 tpu->usages = pu->usages;
505 // ok, these are a hack - since the registry_person_url_allocate() is
506 // adding these, we have to subtract them
507 tpu->machine->links--;
508 registry.persons_urls_memory -= sizeof(PERSON_URL) + strlen(pu->name);
509 registry_url_unlink_nolock(u);
516 static inline PERSON *registry_person_allocate(const char *person_guid, time_t when) {
519 debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): allocating new person, sizeof(PERSON)=%zu", (person_guid)?person_guid:"", sizeof(PERSON));
521 p = mallocz(sizeof(PERSON));
527 uuid_unparse_lower(uuid, p->guid);
529 debug(D_REGISTRY, "Registry: Checking if the generated person guid '%s' is unique", p->guid);
530 if (!dictionary_get(registry.persons, p->guid)) {
531 debug(D_REGISTRY, "Registry: generated person guid '%s' is unique", p->guid);
535 info("Registry: generated person guid '%s' found in the registry. Retrying...", p->guid);
539 strncpyz(p->guid, person_guid, 36);
541 debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): creating dictionary of urls", p->guid);
542 p->urls = dictionary_create(DICTIONARY_FLAGS);
544 p->first_t = p->last_t = when;
547 registry.persons_memory += sizeof(PERSON);
549 registry.persons_count++;
550 dictionary_set(registry.persons, p->guid, p, sizeof(PERSON));
556 // 1. validate person GUID
557 // 2. if it is valid, find it
558 // 3. if it is not valid, create a new one
560 static inline PERSON *registry_person_get(const char *person_guid, time_t when) {
563 registry_persons_lock();
565 if(person_guid && *person_guid) {
567 // validate it is a GUID
568 if(unlikely(registry_regenerate_guid(person_guid, buf) == -1))
569 info("Registry: person guid '%s' is not a valid guid. Ignoring it.", person_guid);
572 p = registry_person_find(person_guid);
576 if(!p) p = registry_person_allocate(NULL, when);
578 registry_persons_unlock();
583 // ----------------------------------------------------------------------------
584 // LINKING OF OBJECTS
586 static inline PERSON_URL *registry_person_link_to_url(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) {
587 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): searching for URL in person", p->guid, m->guid, u->url);
589 registry_person_urls_lock(p);
591 PERSON_URL *pu = dictionary_get(p->urls, u->url);
593 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
594 pu = registry_person_url_allocate(p, m, u, name, namelen, when);
595 registry.persons_urls_count++;
598 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
600 if(likely(pu->last_t < (uint32_t)when)) pu->last_t = when;
602 if(pu->machine != m) {
603 MACHINE_URL *mu = dictionary_get(pu->machine->urls, u->url);
605 info("registry_person_link_to_url('%s', '%s', '%s'): URL switched machines (old was '%s') - expiring it from previous machine.",
606 p->guid, m->guid, u->url, pu->machine->guid);
607 mu->flags |= REGISTRY_URL_FLAGS_EXPIRED;
610 info("registry_person_link_to_url('%s', '%s', '%s'): URL switched machines (old was '%s') - but the URL is not linked to the old machine.",
611 p->guid, m->guid, u->url, pu->machine->guid);
614 pu->machine->links--;
618 if(strcmp(pu->name, name)) {
619 // the name of the PERSON_URL has changed !
620 pu = registry_person_url_reallocate(p, m, u, name, namelen, when, pu);
625 if(likely(p->last_t < (uint32_t)when)) p->last_t = when;
627 if(pu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
628 info("registry_person_link_to_url('%s', '%s', '%s'): accessing an expired URL. Re-enabling URL.", p->guid, m->guid, u->url);
629 pu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
632 registry_person_urls_unlock(p);
637 static inline MACHINE_URL *registry_machine_link_to_url(PERSON *p, MACHINE *m, URL *u, time_t when) {
638 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): searching for URL in machine", p->guid, m->guid, u->url);
640 registry_machine_urls_lock(m);
642 MACHINE_URL *mu = dictionary_get(m->urls, u->url);
644 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
645 mu = registry_machine_url_allocate(m, u, when);
646 registry.machines_urls_count++;
649 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
651 if(likely(mu->last_t < (uint32_t)when)) mu->last_t = when;
654 //debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): indexing person in machine", p->guid, m->guid, u->url);
655 //dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
658 if(likely(m->last_t < (uint32_t)when)) m->last_t = when;
660 if(mu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
661 info("registry_machine_link_to_url('%s', '%s', '%s'): accessing an expired URL.", p->guid, m->guid, u->url);
662 mu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
665 registry_machine_urls_unlock(m);
670 // ----------------------------------------------------------------------------
671 // REGISTRY LOG LOAD/SAVE
673 static inline int registry_should_save_db(void) {
674 debug(D_REGISTRY, "log entries %llu, max %llu", registry.log_count, registry.save_registry_every_entries);
675 return registry.log_count > registry.save_registry_every_entries;
678 static inline void registry_log(const char action, PERSON *p, MACHINE *m, URL *u, char *name) {
679 if(likely(registry.log_fp)) {
680 // we lock only if the file is open
681 // to allow replaying the log at registry_log_load()
684 if(unlikely(fprintf(registry.log_fp, "%c\t%08x\t%s\t%s\t%s\t%s\n",
691 error("Registry: failed to save log. Registry data may be lost in case of abnormal restart.");
693 // we increase the counter even on failures
694 // so that the registry will be saved periodically
695 registry.log_count++;
697 registry_log_unlock();
699 // this must be outside the log_lock(), or a deadlock will happen.
700 // registry_save() checks the same inside the log_lock, so only
701 // one thread will save the db
702 if(unlikely(registry_should_save_db()))
707 static inline int registry_log_open_nolock(void) {
709 fclose(registry.log_fp);
711 registry.log_fp = fopen(registry.log_filename, "a");
713 if(registry.log_fp) {
714 if (setvbuf(registry.log_fp, NULL, _IOLBF, 0) != 0)
715 error("Cannot set line buffering on registry log file.");
719 error("Cannot open registry log file '%s'. Registry data will be lost in case of netdata or server crash.", registry.log_filename);
723 static inline void registry_log_close_nolock(void) {
724 if(registry.log_fp) {
725 fclose(registry.log_fp);
726 registry.log_fp = NULL;
730 static inline void registry_log_recreate_nolock(void) {
731 if(registry.log_fp != NULL) {
732 registry_log_close_nolock();
734 // open it with truncate
735 registry.log_fp = fopen(registry.log_filename, "w");
736 if(registry.log_fp) fclose(registry.log_fp);
737 else error("Cannot truncate registry log '%s'", registry.log_filename);
739 registry.log_fp = NULL;
741 registry_log_open_nolock();
745 int registry_log_load(void) {
746 char *s, buf[4096 + 1];
749 // closing the log is required here
750 // otherwise we will append to it the values we read
751 registry_log_close_nolock();
753 debug(D_REGISTRY, "Registry: loading active db from: %s", registry.log_filename);
754 FILE *fp = fopen(registry.log_filename, "r");
756 error("Registry: cannot open registry file: %s", registry.log_filename);
760 while ((s = fgets_trim_len(buf, 4096, fp, &len))) {
764 case 'A': // accesses
767 // verify it is valid
768 if (unlikely(len < 85 || s[1] != '\t' || s[10] != '\t' || s[47] != '\t' || s[84] != '\t')) {
769 error("Registry: log line %zu is wrong (len = %zu).", line, len);
772 s[1] = s[10] = s[47] = s[84] = '\0';
775 time_t when = strtoul(&s[2], NULL, 16);
776 char *person_guid = &s[11];
777 char *machine_guid = &s[48];
780 // skip the name to find the url
782 while(*url && *url != '\t') url++;
784 error("Registry: log line %zu does not have a url.", line);
789 // make sure the person exists
790 // without this, a new person guid will be created
791 PERSON *p = registry_person_find(person_guid);
792 if(!p) p = registry_person_allocate(person_guid, when);
795 registry_request_access(p->guid, machine_guid, url, name, when);
797 registry_request_delete(p->guid, machine_guid, url, name, when);
799 registry.log_count++;
803 error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.log_filename, s);
811 // open the log again
812 registry_log_open_nolock();
818 // ----------------------------------------------------------------------------
821 PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
822 debug(D_REGISTRY, "registry_request_access('%s', '%s', '%s'): NEW REQUEST", (person_guid)?person_guid:"", machine_guid, url);
824 MACHINE *m = registry_machine_get(machine_guid, when);
827 // make sure the name is valid
829 name = registry_fix_machine_name(name, &namelen);
832 url = registry_fix_url(url, &urllen);
834 URL *u = registry_url_get(url, urllen);
835 PERSON *p = registry_person_get(person_guid, when);
837 registry_person_link_to_url(p, m, u, name, namelen, when);
838 registry_machine_link_to_url(p, m, u, when);
840 registry_log('A', p, m, u, name);
842 registry.usages_count++;
846 // verify the person, the machine and the URL exist in our DB
847 PERSON_URL *registry_verify_request(char *person_guid, char *machine_guid, char *url, PERSON **pp, MACHINE **mm) {
848 char pbuf[36 + 1], mbuf[36 + 1];
850 if(!person_guid || !*person_guid || !machine_guid || !*machine_guid || !url || !*url) {
851 info("Registry Request Verification: invalid request! person: '%s', machine '%s', url '%s'", person_guid?person_guid:"UNSET", machine_guid?machine_guid:"UNSET", url?url:"UNSET");
856 url = registry_fix_url(url, NULL);
858 // make sure the person GUID is valid
859 if(registry_regenerate_guid(person_guid, pbuf) == -1) {
860 info("Registry Request Verification: invalid person GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
865 // make sure the machine GUID is valid
866 if(registry_regenerate_guid(machine_guid, mbuf) == -1) {
867 info("Registry Request Verification: invalid machine GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
872 // make sure the machine exists
873 MACHINE *m = registry_machine_find(machine_guid);
875 info("Registry Request Verification: machine not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
880 // make sure the person exist
881 PERSON *p = registry_person_find(person_guid);
883 info("Registry Request Verification: person not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
888 PERSON_URL *pu = dictionary_get(p->urls, url);
890 info("Registry Request Verification: URL not found for person, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
896 PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) {
901 PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m);
902 if(!pu || !p || !m) return NULL;
905 delete_url = registry_fix_url(delete_url, NULL);
907 // make sure the user is not deleting the url it uses
908 if(!strcmp(delete_url, pu->url->url)) {
909 info("Registry Delete Request: delete URL is the one currently accessed, person: '%s', machine '%s', url '%s', delete url '%s'", p->guid, m->guid, pu->url->url, delete_url);
913 registry_person_urls_lock(p);
915 PERSON_URL *dpu = dictionary_get(p->urls, delete_url);
917 info("Registry Delete Request: URL not found for person: '%s', machine '%s', url '%s', delete url '%s'", p->guid, m->guid, pu->url->url, delete_url);
918 registry_person_urls_unlock(p);
922 registry_log('D', p, m, pu->url, dpu->url->url);
924 dictionary_del(p->urls, dpu->url->url);
925 registry_url_unlink_nolock(dpu->url);
928 registry_person_urls_unlock(p);
933 // a structure to pass to the dictionary_get_all() callback handler
934 struct machine_request_callback_data {
935 MACHINE *find_this_machine;
939 // the callback function
940 // this will be run for every PERSON_URL of this PERSON
941 int machine_request_callback(void *entry, void *data) {
942 PERSON_URL *mypu = (PERSON_URL *)entry;
943 struct machine_request_callback_data *myrdata = (struct machine_request_callback_data *)data;
945 if(mypu->machine == myrdata->find_this_machine) {
946 myrdata->result = mypu;
947 return -1; // this will also stop the walk through
950 return 0; // continue
953 MACHINE *registry_request_machine(char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) {
960 PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m);
961 if(!pu || !p || !m) return NULL;
963 // make sure the machine GUID is valid
964 if(registry_regenerate_guid(request_machine, mbuf) == -1) {
965 info("Registry Machine URLs request: invalid machine GUID, person: '%s', machine '%s', url '%s', request machine '%s'", p->guid, m->guid, pu->url->url, request_machine);
968 request_machine = mbuf;
970 // make sure the machine exists
971 m = registry_machine_find(request_machine);
973 info("Registry Machine URLs request: machine not found, person: '%s', machine '%s', url '%s', request machine '%s'", p->guid, machine_guid, pu->url->url, request_machine);
977 // Verify the user has in the past accessed this machine
978 // We will walk through the PERSON_URLs to find the machine
979 // linking to our machine
981 // a structure to pass to the dictionary_get_all() callback handler
982 struct machine_request_callback_data rdata = { m, NULL };
984 // request a walk through on the dictionary
985 // no need for locking here, the underlying dictionary has its own
986 dictionary_get_all(p->urls, machine_request_callback, &rdata);
995 // ----------------------------------------------------------------------------
996 // REGISTRY JSON generation
998 #define REGISTRY_STATUS_OK "ok"
999 #define REGISTRY_STATUS_FAILED "failed"
1000 #define REGISTRY_STATUS_DISABLED "disabled"
1002 int registry_verify_cookies_redirects(void) {
1003 return registry.verify_cookies_redirects;
1006 const char *registry_to_announce(void) {
1007 return registry.registry_to_announce;
1010 void registry_set_cookie(struct web_client *w, const char *guid) {
1012 time_t et = time(NULL) + registry.persons_expiration;
1013 struct tm etmbuf, *etm = gmtime_r(&et, &etmbuf);
1014 strftime(edate, sizeof(edate), "%a, %d %b %Y %H:%M:%S %Z", etm);
1016 snprintfz(w->cookie1, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Expires=%s", guid, edate);
1018 if(registry.registry_domain && registry.registry_domain[0])
1019 snprintfz(w->cookie2, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Domain=%s; Expires=%s", guid, registry.registry_domain, edate);
1022 static inline void registry_set_person_cookie(struct web_client *w, PERSON *p) {
1023 registry_set_cookie(w, p->guid);
1026 static inline void registry_json_header(struct web_client *w, const char *action, const char *status) {
1027 buffer_flush(w->response.data);
1028 w->response.data->contenttype = CT_APPLICATION_JSON;
1029 buffer_sprintf(w->response.data, "{\n\t\"action\": \"%s\",\n\t\"status\": \"%s\",\n\t\"hostname\": \"%s\",\n\t\"machine_guid\": \"%s\"",
1030 action, status, registry.hostname, registry.machine_guid);
1033 static inline void registry_json_footer(struct web_client *w) {
1034 buffer_strcat(w->response.data, "\n}\n");
1037 int registry_request_hello_json(struct web_client *w) {
1038 registry_json_header(w, "hello", REGISTRY_STATUS_OK);
1040 buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
1041 registry.registry_to_announce);
1043 registry_json_footer(w);
1047 static inline int registry_json_disabled(struct web_client *w, const char *action) {
1048 registry_json_header(w, action, REGISTRY_STATUS_DISABLED);
1050 buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
1051 registry.registry_to_announce);
1053 registry_json_footer(w);
1057 // structure used be the callbacks below
1058 struct registry_json_walk_person_urls_callback {
1061 struct web_client *w;
1065 // callback for rendering PERSON_URLs
1066 static inline int registry_json_person_url_callback(void *entry, void *data) {
1067 PERSON_URL *pu = (PERSON_URL *)entry;
1068 struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data;
1069 struct web_client *w = c->w;
1071 if(unlikely(c->count++))
1072 buffer_strcat(w->response.data, ",");
1074 buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u, \"%s\" ]",
1075 pu->machine->guid, pu->url->url, pu->last_t, pu->usages, pu->name);
1080 // callback for rendering MACHINE_URLs
1081 static inline int registry_json_machine_url_callback(void *entry, void *data) {
1082 MACHINE_URL *mu = (MACHINE_URL *)entry;
1083 struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data;
1084 struct web_client *w = c->w;
1087 if(unlikely(c->count++))
1088 buffer_strcat(w->response.data, ",");
1090 buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u ]",
1091 m->guid, mu->url->url, mu->last_t, mu->usages);
1097 // the main method for registering an access
1098 int registry_request_access_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
1099 if(!registry.enabled)
1100 return registry_json_disabled(w, "access");
1102 PERSON *p = registry_request_access(person_guid, machine_guid, url, name, when);
1104 registry_json_header(w, "access", REGISTRY_STATUS_FAILED);
1105 registry_json_footer(w);
1110 registry_set_person_cookie(w, p);
1112 // generate the response
1113 registry_json_header(w, "access", REGISTRY_STATUS_OK);
1115 buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\",\n\t\"urls\": [", p->guid);
1116 struct registry_json_walk_person_urls_callback c = { p, NULL, w, 0 };
1117 dictionary_get_all(p->urls, registry_json_person_url_callback, &c);
1118 buffer_strcat(w->response.data, "\n\t]\n");
1120 registry_json_footer(w);
1124 // the main method for deleting a URL from a person
1125 int registry_request_delete_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) {
1126 if(!registry.enabled)
1127 return registry_json_disabled(w, "delete");
1129 PERSON *p = registry_request_delete(person_guid, machine_guid, url, delete_url, when);
1131 registry_json_header(w, "delete", REGISTRY_STATUS_FAILED);
1132 registry_json_footer(w);
1136 // generate the response
1137 registry_json_header(w, "delete", REGISTRY_STATUS_OK);
1138 registry_json_footer(w);
1142 // the main method for searching the URLs of a netdata
1143 int registry_request_search_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) {
1144 if(!registry.enabled)
1145 return registry_json_disabled(w, "search");
1147 MACHINE *m = registry_request_machine(person_guid, machine_guid, url, request_machine, when);
1149 registry_json_header(w, "search", REGISTRY_STATUS_FAILED);
1150 registry_json_footer(w);
1154 registry_json_header(w, "search", REGISTRY_STATUS_OK);
1156 buffer_strcat(w->response.data, ",\n\t\"urls\": [");
1157 struct registry_json_walk_person_urls_callback c = { NULL, m, w, 0 };
1158 dictionary_get_all(m->urls, registry_json_machine_url_callback, &c);
1159 buffer_strcat(w->response.data, "\n\t]\n");
1161 registry_json_footer(w);
1165 // structure used be the callbacks below
1166 struct registry_person_url_callback_verify_machine_exists_data {
1171 int registry_person_url_callback_verify_machine_exists(void *entry, void *data) {
1172 struct registry_person_url_callback_verify_machine_exists_data *d = (struct registry_person_url_callback_verify_machine_exists_data *)data;
1173 PERSON_URL *pu = (PERSON_URL *)entry;
1176 if(pu->machine == m)
1182 // the main method for switching user identity
1183 int registry_request_switch_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *new_person_guid, time_t when) {
1187 if(!registry.enabled)
1188 return registry_json_disabled(w, "switch");
1190 PERSON *op = registry_person_find(person_guid);
1192 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1193 registry_json_footer(w);
1197 PERSON *np = registry_person_find(new_person_guid);
1199 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1200 registry_json_footer(w);
1204 MACHINE *m = registry_machine_find(machine_guid);
1206 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1207 registry_json_footer(w);
1211 struct registry_person_url_callback_verify_machine_exists_data data = { m, 0 };
1213 // verify the old person has access to this machine
1214 dictionary_get_all(op->urls, registry_person_url_callback_verify_machine_exists, &data);
1216 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1217 registry_json_footer(w);
1221 // verify the new person has access to this machine
1223 dictionary_get_all(np->urls, registry_person_url_callback_verify_machine_exists, &data);
1225 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1226 registry_json_footer(w);
1230 // set the cookie of the new person
1231 // the user just switched identity
1232 registry_set_person_cookie(w, np);
1234 // generate the response
1235 registry_json_header(w, "switch", REGISTRY_STATUS_OK);
1236 buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\"", np->guid);
1237 registry_json_footer(w);
1242 // ----------------------------------------------------------------------------
1243 // REGISTRY THIS MACHINE UNIQUE ID
1245 static inline int is_machine_guid_blacklisted(const char *guid) {
1246 // these are machine GUIDs that have been included in distribution packages.
1247 // we blacklist them here, so that the next version of netdata will generate
1250 if(!strcmp(guid, "8a795b0c-2311-11e6-8563-000c295076a6")
1251 || !strcmp(guid, "4aed1458-1c3e-11e6-a53f-000c290fc8f5")
1253 error("Blacklisted machine GUID '%s' found.", guid);
1260 char *registry_get_this_machine_guid(void) {
1261 if(likely(registry.machine_guid[0]))
1262 return registry.machine_guid;
1264 // read it from disk
1265 int fd = open(registry.machine_guid_filename, O_RDONLY);
1268 if(read(fd, buf, 36) != 36)
1269 error("Failed to read machine GUID from '%s'", registry.machine_guid_filename);
1272 if(registry_regenerate_guid(buf, registry.machine_guid) == -1) {
1273 error("Failed to validate machine GUID '%s' from '%s'. Ignoring it - this might mean this netdata will appear as duplicate in the registry.",
1274 buf, registry.machine_guid_filename);
1276 registry.machine_guid[0] = '\0';
1278 else if(is_machine_guid_blacklisted(registry.machine_guid))
1279 registry.machine_guid[0] = '\0';
1284 // generate a new one?
1285 if(!registry.machine_guid[0]) {
1288 uuid_generate_time(uuid);
1289 uuid_unparse_lower(uuid, registry.machine_guid);
1290 registry.machine_guid[36] = '\0';
1293 fd = open(registry.machine_guid_filename, O_WRONLY|O_CREAT|O_TRUNC, 444);
1295 fatal("Cannot create unique machine id file '%s'. Please fix this.", registry.machine_guid_filename);
1297 if(write(fd, registry.machine_guid, 36) != 36)
1298 fatal("Cannot write the unique machine id file '%s'. Please fix this.", registry.machine_guid_filename);
1303 setenv("NETDATA_REGISTRY_UNIQUE_ID", registry.machine_guid, 1);
1305 return registry.machine_guid;
1309 // ----------------------------------------------------------------------------
1310 // REGISTRY LOAD/SAVE
1312 int registry_machine_save_url(void *entry, void *file) {
1313 MACHINE_URL *mu = entry;
1316 debug(D_REGISTRY, "Registry: registry_machine_save_url('%s')", mu->url->url);
1318 int ret = fprintf(fp, "V\t%08x\t%08x\t%08x\t%02x\t%s\n",
1326 // error handling is done at registry_save()
1331 int registry_machine_save(void *entry, void *file) {
1335 debug(D_REGISTRY, "Registry: registry_machine_save('%s')", m->guid);
1337 int ret = fprintf(fp, "M\t%08x\t%08x\t%08x\t%s\n",
1345 int ret2 = dictionary_get_all(m->urls, registry_machine_save_url, fp);
1346 if(ret2 < 0) return ret2;
1350 // error handling is done at registry_save()
1355 static inline int registry_person_save_url(void *entry, void *file) {
1356 PERSON_URL *pu = entry;
1359 debug(D_REGISTRY, "Registry: registry_person_save_url('%s')", pu->url->url);
1361 int ret = fprintf(fp, "U\t%08x\t%08x\t%08x\t%02x\t%s\t%s\t%s\n",
1371 // error handling is done at registry_save()
1376 static inline int registry_person_save(void *entry, void *file) {
1380 debug(D_REGISTRY, "Registry: registry_person_save('%s')", p->guid);
1382 int ret = fprintf(fp, "P\t%08x\t%08x\t%08x\t%s\n",
1390 int ret2 = dictionary_get_all(p->urls, registry_person_save_url, fp);
1391 if (ret2 < 0) return ret2;
1395 // error handling is done at registry_save()
1400 int registry_save(void) {
1401 if(!registry.enabled) return -1;
1403 // make sure the log is not updated
1404 registry_log_lock();
1406 if(unlikely(!registry_should_save_db())) {
1407 registry_log_unlock();
1411 error_log_limit_unlimited();
1413 char tmp_filename[FILENAME_MAX + 1];
1414 char old_filename[FILENAME_MAX + 1];
1416 snprintfz(old_filename, FILENAME_MAX, "%s.old", registry.db_filename);
1417 snprintfz(tmp_filename, FILENAME_MAX, "%s.tmp", registry.db_filename);
1419 debug(D_REGISTRY, "Registry: Creating file '%s'", tmp_filename);
1420 FILE *fp = fopen(tmp_filename, "w");
1422 error("Registry: Cannot create file: %s", tmp_filename);
1423 registry_log_unlock();
1424 error_log_limit_reset();
1428 // dictionary_get_all() has its own locking, so this is safe to do
1430 debug(D_REGISTRY, "Saving all machines");
1431 int bytes1 = dictionary_get_all(registry.machines, registry_machine_save, fp);
1433 error("Registry: Cannot save registry machines - return value %d", bytes1);
1435 registry_log_unlock();
1436 error_log_limit_reset();
1439 debug(D_REGISTRY, "Registry: saving machines took %d bytes", bytes1);
1441 debug(D_REGISTRY, "Saving all persons");
1442 int bytes2 = dictionary_get_all(registry.persons, registry_person_save, fp);
1444 error("Registry: Cannot save registry persons - return value %d", bytes2);
1446 registry_log_unlock();
1447 error_log_limit_reset();
1450 debug(D_REGISTRY, "Registry: saving persons took %d bytes", bytes2);
1453 fprintf(fp, "T\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\n",
1454 registry.persons_count,
1455 registry.machines_count,
1456 registry.usages_count + 1, // this is required - it is lost on db rotation
1457 registry.urls_count,
1458 registry.persons_urls_count,
1459 registry.machines_urls_count
1466 // remove the .old db
1467 debug(D_REGISTRY, "Registry: Removing old db '%s'", old_filename);
1468 if(unlink(old_filename) == -1 && errno != ENOENT)
1469 error("Registry: cannot remove old registry file '%s'", old_filename);
1471 // rename the db to .old
1472 debug(D_REGISTRY, "Registry: Link current db '%s' to .old: '%s'", registry.db_filename, old_filename);
1473 if(link(registry.db_filename, old_filename) == -1 && errno != ENOENT)
1474 error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename, registry.db_filename);
1477 // remove the database (it is saved in .old)
1478 debug(D_REGISTRY, "Registry: removing db '%s'", registry.db_filename);
1479 if (unlink(registry.db_filename) == -1 && errno != ENOENT)
1480 error("Registry: cannot remove old registry file '%s'", registry.db_filename);
1482 // move the .tmp to make it active
1483 debug(D_REGISTRY, "Registry: linking tmp db '%s' to active db '%s'", tmp_filename, registry.db_filename);
1484 if (link(tmp_filename, registry.db_filename) == -1) {
1485 error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename,
1486 registry.db_filename);
1488 // move the .old back
1489 debug(D_REGISTRY, "Registry: linking old db '%s' to active db '%s'", old_filename, registry.db_filename);
1490 if(link(old_filename, registry.db_filename) == -1)
1491 error("Registry: cannot move file '%s' to '%s'. Recovering the old registry DB failed!", old_filename, registry.db_filename);
1494 debug(D_REGISTRY, "Registry: removing tmp db '%s'", tmp_filename);
1495 if(unlink(tmp_filename) == -1)
1496 error("Registry: cannot remove tmp registry file '%s'", tmp_filename);
1498 // it has been moved successfully
1499 // discard the current registry log
1500 registry_log_recreate_nolock();
1501 registry.log_count = 0;
1505 // continue operations
1506 registry_log_unlock();
1507 error_log_limit_reset();
1512 static inline size_t registry_load(void) {
1513 char *s, buf[4096 + 1];
1519 debug(D_REGISTRY, "Registry: loading active db from: '%s'", registry.db_filename);
1520 FILE *fp = fopen(registry.db_filename, "r");
1522 error("Registry: cannot open registry file: '%s'", registry.db_filename);
1528 while((s = fgets_trim_len(buf, 4096, fp, &len))) {
1531 debug(D_REGISTRY, "Registry: read line %zu to length %zu: %s", line, len, s);
1534 if(unlikely(len != 103 || s[1] != '\t' || s[18] != '\t' || s[35] != '\t' || s[52] != '\t' || s[69] != '\t' || s[86] != '\t' || s[103] != '\0')) {
1535 error("Registry totals line %zu is wrong (len = %zu).", line, len);
1538 registry.persons_count = strtoull(&s[2], NULL, 16);
1539 registry.machines_count = strtoull(&s[19], NULL, 16);
1540 registry.usages_count = strtoull(&s[36], NULL, 16);
1541 registry.urls_count = strtoull(&s[53], NULL, 16);
1542 registry.persons_urls_count = strtoull(&s[70], NULL, 16);
1543 registry.machines_urls_count = strtoull(&s[87], NULL, 16);
1548 // verify it is valid
1549 if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) {
1550 error("Registry person line %zu is wrong (len = %zu).", line, len);
1554 s[1] = s[10] = s[19] = s[28] = '\0';
1555 p = registry_person_allocate(&s[29], strtoul(&s[2], NULL, 16));
1556 p->last_t = strtoul(&s[11], NULL, 16);
1557 p->usages = strtoul(&s[20], NULL, 16);
1558 debug(D_REGISTRY, "Registry loaded person '%s', first: %u, last: %u, usages: %u", p->guid, p->first_t, p->last_t, p->usages);
1561 case 'M': // machine
1563 // verify it is valid
1564 if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) {
1565 error("Registry person line %zu is wrong (len = %zu).", line, len);
1569 s[1] = s[10] = s[19] = s[28] = '\0';
1570 m = registry_machine_allocate(&s[29], strtoul(&s[2], NULL, 16));
1571 m->last_t = strtoul(&s[11], NULL, 16);
1572 m->usages = strtoul(&s[20], NULL, 16);
1573 debug(D_REGISTRY, "Registry loaded machine '%s', first: %u, last: %u, usages: %u", m->guid, m->first_t, m->last_t, m->usages);
1576 case 'U': // person URL
1578 error("Registry: ignoring line %zu, no person loaded: %s", line, s);
1582 // verify it is valid
1583 if(len < 69 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t' || s[68] != '\t') {
1584 error("Registry person URL line %zu is wrong (len = %zu).", line, len);
1588 s[1] = s[10] = s[19] = s[28] = s[31] = s[68] = '\0';
1590 // skip the name to find the url
1592 while(*url && *url != '\t') url++;
1594 error("Registry person URL line %zu does not have a url.", line);
1599 // u = registry_url_allocate_nolock(url, strlen(url));
1600 u = registry_url_get_nolock(url, strlen(url));
1602 time_t first_t = strtoul(&s[2], NULL, 16);
1604 m = registry_machine_find(&s[32]);
1605 if(!m) m = registry_machine_allocate(&s[32], first_t);
1607 PERSON_URL *pu = registry_person_url_allocate(p, m, u, &s[69], strlen(&s[69]), first_t);
1608 pu->last_t = strtoul(&s[11], NULL, 16);
1609 pu->usages = strtoul(&s[20], NULL, 16);
1610 pu->flags = strtoul(&s[29], NULL, 16);
1611 debug(D_REGISTRY, "Registry loaded person URL '%s' with name '%s' of machine '%s', first: %u, last: %u, usages: %u, flags: %02x", u->url, pu->name, m->guid, pu->first_t, pu->last_t, pu->usages, pu->flags);
1614 case 'V': // machine URL
1616 error("Registry: ignoring line %zu, no machine loaded: %s", line, s);
1620 // verify it is valid
1621 if(len < 32 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t') {
1622 error("Registry person URL line %zu is wrong (len = %zu).", line, len);
1626 s[1] = s[10] = s[19] = s[28] = s[31] = '\0';
1627 // u = registry_url_allocate_nolock(&s[32], strlen(&s[32]));
1628 u = registry_url_get_nolock(&s[32], strlen(&s[32]));
1630 MACHINE_URL *mu = registry_machine_url_allocate(m, u, strtoul(&s[2], NULL, 16));
1631 mu->last_t = strtoul(&s[11], NULL, 16);
1632 mu->usages = strtoul(&s[20], NULL, 16);
1633 mu->flags = strtoul(&s[29], NULL, 16);
1634 debug(D_REGISTRY, "Registry loaded machine URL '%s', machine '%s', first: %u, last: %u, usages: %u, flags: %02x", u->url, m->guid, mu->first_t, mu->last_t, mu->usages, mu->flags);
1638 error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.db_filename, s);
1647 // ----------------------------------------------------------------------------
1650 int registry_init(void) {
1651 char filename[FILENAME_MAX + 1];
1653 // registry enabled?
1654 registry.enabled = config_get_boolean("registry", "enabled", 0);
1657 registry.pathname = config_get("registry", "registry db directory", VARLIB_DIR "/registry");
1658 if(mkdir(registry.pathname, 0770) == -1 && errno != EEXIST)
1659 fatal("Cannot create directory '%s'.", registry.pathname);
1662 snprintfz(filename, FILENAME_MAX, "%s/netdata.public.unique.id", registry.pathname);
1663 registry.machine_guid_filename = config_get("registry", "netdata unique id file", filename);
1664 registry_get_this_machine_guid();
1666 snprintfz(filename, FILENAME_MAX, "%s/registry.db", registry.pathname);
1667 registry.db_filename = config_get("registry", "registry db file", filename);
1669 snprintfz(filename, FILENAME_MAX, "%s/registry-log.db", registry.pathname);
1670 registry.log_filename = config_get("registry", "registry log file", filename);
1672 // configuration options
1673 registry.save_registry_every_entries = config_get_number("registry", "registry save db every new entries", 1000000);
1674 registry.persons_expiration = config_get_number("registry", "registry expire idle persons days", 365) * 86400;
1675 registry.registry_domain = config_get("registry", "registry domain", "");
1676 registry.registry_to_announce = config_get("registry", "registry to announce", "https://registry.my-netdata.io");
1677 registry.hostname = config_get("registry", "registry hostname", config_get("global", "hostname", localhost.hostname));
1678 registry.verify_cookies_redirects = config_get_boolean("registry", "verify browser cookies support", 1);
1680 setenv("NETDATA_REGISTRY_HOSTNAME", registry.hostname, 1);
1681 setenv("NETDATA_REGISTRY_URL", registry.registry_to_announce, 1);
1683 registry.max_url_length = config_get_number("registry", "max URL length", 1024);
1684 if(registry.max_url_length < 10) {
1685 registry.max_url_length = 10;
1686 config_set_number("registry", "max URL length", registry.max_url_length);
1689 registry.max_name_length = config_get_number("registry", "max URL name length", 50);
1690 if(registry.max_name_length < 10) {
1691 registry.max_name_length = 10;
1692 config_set_number("registry", "max URL name length", registry.max_name_length);
1695 // initialize entries counters
1696 registry.persons_count = 0;
1697 registry.machines_count = 0;
1698 registry.usages_count = 0;
1699 registry.urls_count = 0;
1700 registry.persons_urls_count = 0;
1701 registry.machines_urls_count = 0;
1703 // initialize memory counters
1704 registry.persons_memory = 0;
1705 registry.machines_memory = 0;
1706 registry.urls_memory = 0;
1707 registry.persons_urls_memory = 0;
1708 registry.machines_urls_memory = 0;
1711 pthread_mutex_init(®istry.persons_lock, NULL);
1712 pthread_mutex_init(®istry.machines_lock, NULL);
1713 pthread_mutex_init(®istry.urls_lock, NULL);
1714 pthread_mutex_init(®istry.person_urls_lock, NULL);
1715 pthread_mutex_init(®istry.machine_urls_lock, NULL);
1717 // create dictionaries
1718 registry.persons = dictionary_create(DICTIONARY_FLAGS);
1719 registry.machines = dictionary_create(DICTIONARY_FLAGS);
1720 registry.urls = dictionary_create(DICTIONARY_FLAGS);
1722 // load the registry database
1723 if(registry.enabled) {
1724 registry_log_open_nolock();
1726 registry_log_load();
1728 if(unlikely(registry_should_save_db()))
1735 void registry_free(void) {
1736 if(!registry.enabled) return;
1738 // we need to destroy the dictionaries ourselves
1739 // since the dictionaries use memory we allocated
1741 while(registry.persons->values_index.root) {
1742 PERSON *p = ((NAME_VALUE *)registry.persons->values_index.root)->value;
1744 // fprintf(stderr, "\nPERSON: '%s', first: %u, last: %u, usages: %u\n", p->guid, p->first_t, p->last_t, p->usages);
1746 while(p->urls->values_index.root) {
1747 PERSON_URL *pu = ((NAME_VALUE *)p->urls->values_index.root)->value;
1749 // fprintf(stderr, "\tURL: '%s', first: %u, last: %u, usages: %u, flags: 0x%02x\n", pu->url->url, pu->first_t, pu->last_t, pu->usages, pu->flags);
1751 debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", pu->url->url, p->guid);
1752 dictionary_del(p->urls, pu->url->url);
1754 debug(D_REGISTRY, "Registry: unlinking url '%s' from person", pu->url->url);
1755 registry_url_unlink_nolock(pu->url);
1757 debug(D_REGISTRY, "Registry: freeing person url");
1761 debug(D_REGISTRY, "Registry: deleting person '%s' from persons registry", p->guid);
1762 dictionary_del(registry.persons, p->guid);
1764 debug(D_REGISTRY, "Registry: destroying URL dictionary of person '%s'", p->guid);
1765 dictionary_destroy(p->urls);
1767 debug(D_REGISTRY, "Registry: freeing person '%s'", p->guid);
1771 while(registry.machines->values_index.root) {
1772 MACHINE *m = ((NAME_VALUE *)registry.machines->values_index.root)->value;
1774 // fprintf(stderr, "\nMACHINE: '%s', first: %u, last: %u, usages: %u\n", m->guid, m->first_t, m->last_t, m->usages);
1776 while(m->urls->values_index.root) {
1777 MACHINE_URL *mu = ((NAME_VALUE *)m->urls->values_index.root)->value;
1779 // fprintf(stderr, "\tURL: '%s', first: %u, last: %u, usages: %u, flags: 0x%02x\n", mu->url->url, mu->first_t, mu->last_t, mu->usages, mu->flags);
1781 //debug(D_REGISTRY, "Registry: destroying persons dictionary from url '%s'", mu->url->url);
1782 //dictionary_destroy(mu->persons);
1784 debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", mu->url->url, m->guid);
1785 dictionary_del(m->urls, mu->url->url);
1787 debug(D_REGISTRY, "Registry: unlinking url '%s' from machine", mu->url->url);
1788 registry_url_unlink_nolock(mu->url);
1790 debug(D_REGISTRY, "Registry: freeing machine url");
1794 debug(D_REGISTRY, "Registry: deleting machine '%s' from machines registry", m->guid);
1795 dictionary_del(registry.machines, m->guid);
1797 debug(D_REGISTRY, "Registry: destroying URL dictionary of machine '%s'", m->guid);
1798 dictionary_destroy(m->urls);
1800 debug(D_REGISTRY, "Registry: freeing machine '%s'", m->guid);
1804 // and free the memory of remaining dictionary structures
1806 debug(D_REGISTRY, "Registry: destroying persons dictionary");
1807 dictionary_destroy(registry.persons);
1809 debug(D_REGISTRY, "Registry: destroying machines dictionary");
1810 dictionary_destroy(registry.machines);
1812 debug(D_REGISTRY, "Registry: destroying urls dictionary");
1813 dictionary_destroy(registry.urls);
1816 // ----------------------------------------------------------------------------
1819 void registry_statistics(void) {
1820 if(!registry.enabled) return;
1822 static RRDSET *sts = NULL, *stc = NULL, *stm = NULL;
1824 if(!sts) sts = rrdset_find("netdata.registry_sessions");
1826 sts = rrdset_create("netdata", "registry_sessions", NULL, "registry", NULL, "NetData Registry Sessions", "session", 131000, rrd_update_every, RRDSET_TYPE_LINE);
1828 rrddim_add(sts, "sessions", NULL, 1, 1, RRDDIM_ABSOLUTE);
1830 else rrdset_next(sts);
1832 rrddim_set(sts, "sessions", registry.usages_count);
1835 // ------------------------------------------------------------------------
1837 if(!stc) stc = rrdset_find("netdata.registry_entries");
1839 stc = rrdset_create("netdata", "registry_entries", NULL, "registry", NULL, "NetData Registry Entries", "entries", 131100, rrd_update_every, RRDSET_TYPE_LINE);
1841 rrddim_add(stc, "persons", NULL, 1, 1, RRDDIM_ABSOLUTE);
1842 rrddim_add(stc, "machines", NULL, 1, 1, RRDDIM_ABSOLUTE);
1843 rrddim_add(stc, "urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1844 rrddim_add(stc, "persons_urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1845 rrddim_add(stc, "machines_urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1847 else rrdset_next(stc);
1849 rrddim_set(stc, "persons", registry.persons_count);
1850 rrddim_set(stc, "machines", registry.machines_count);
1851 rrddim_set(stc, "urls", registry.urls_count);
1852 rrddim_set(stc, "persons_urls", registry.persons_urls_count);
1853 rrddim_set(stc, "machines_urls", registry.machines_urls_count);
1856 // ------------------------------------------------------------------------
1858 if(!stm) stm = rrdset_find("netdata.registry_mem");
1860 stm = rrdset_create("netdata", "registry_mem", NULL, "registry", NULL, "NetData Registry Memory", "KB", 131300, rrd_update_every, RRDSET_TYPE_STACKED);
1862 rrddim_add(stm, "persons", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1863 rrddim_add(stm, "machines", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1864 rrddim_add(stm, "urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1865 rrddim_add(stm, "persons_urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1866 rrddim_add(stm, "machines_urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1868 else rrdset_next(stm);
1870 rrddim_set(stm, "persons", registry.persons_memory + registry.persons_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1871 rrddim_set(stm, "machines", registry.machines_memory + registry.machines_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1872 rrddim_set(stm, "urls", registry.urls_memory + registry.urls_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1873 rrddim_set(stm, "persons_urls", registry.persons_urls_memory + registry.persons_count * sizeof(DICTIONARY) + registry.persons_urls_count * sizeof(NAME_VALUE));
1874 rrddim_set(stm, "machines_urls", registry.machines_urls_memory + registry.machines_count * sizeof(DICTIONARY) + registry.machines_urls_count * sizeof(NAME_VALUE));