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
33 #define REGISTRY_URL_FLAGS_DEFAULT 0x00
34 #define REGISTRY_URL_FLAGS_EXPIRED 0x01
36 #define DICTIONARY_FLAGS DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE | DICTIONARY_FLAG_NAME_LINK_DONT_CLONE
38 // ----------------------------------------------------------------------------
44 char machine_guid[36 + 1];
46 // entries counters / statistics
47 unsigned long long persons_count;
48 unsigned long long machines_count;
49 unsigned long long usages_count;
50 unsigned long long urls_count;
51 unsigned long long persons_urls_count;
52 unsigned long long machines_urls_count;
53 unsigned long long log_count;
55 // memory counters / statistics
56 unsigned long long persons_memory;
57 unsigned long long machines_memory;
58 unsigned long long urls_memory;
59 unsigned long long persons_urls_memory;
60 unsigned long long machines_urls_memory;
63 unsigned long long save_registry_every_entries;
64 char *registry_domain;
66 char *registry_to_announce;
67 time_t persons_expiration; // seconds to expire idle persons
68 int verify_cookies_redirects;
70 size_t max_url_length;
71 size_t max_name_length;
77 char *machine_guid_filename;
83 DICTIONARY *persons; // dictionary of PERSON *, with key the PERSON.guid
84 DICTIONARY *machines; // dictionary of MACHINE *, with key the MACHINE.guid
85 DICTIONARY *urls; // dictionary of URL *, with key the URL.url
87 // concurrency locking
88 // we keep different locks for different things
89 // so that many tasks can be completed in parallel
90 pthread_mutex_t persons_lock;
91 pthread_mutex_t machines_lock;
92 pthread_mutex_t urls_lock;
93 pthread_mutex_t person_urls_lock;
94 pthread_mutex_t machine_urls_lock;
95 pthread_mutex_t log_lock;
99 // ----------------------------------------------------------------------------
101 // Save memory by de-duplicating URLs
102 // so instead of storing URLs all over the place
103 // we store them here and we keep pointers elsewhere
106 uint32_t links; // the number of links to this URL - when none is left, we free it
107 uint16_t len; // the length of the URL in bytes
108 char url[1]; // the URL - dynamically allocated to more size
110 typedef struct url URL;
113 // ----------------------------------------------------------------------------
114 // MACHINE structures
116 // For each MACHINE-URL pair we keep this
118 URL *url; // de-duplicated URL
119 // DICTIONARY *persons; // dictionary of PERSON *
122 uint32_t first_t; // the first time we saw this
123 uint32_t last_t; // the last time we saw this
124 uint32_t usages; // how many times this has been accessed
126 typedef struct machine_url MACHINE_URL;
130 char guid[36 + 1]; // the GUID
132 uint32_t links; // the number of PERSON_URLs linked to this machine
134 DICTIONARY *urls; // MACHINE_URL *
136 uint32_t first_t; // the first time we saw this
137 uint32_t last_t; // the last time we saw this
138 uint32_t usages; // how many times this has been accessed
140 typedef struct machine MACHINE;
143 // ----------------------------------------------------------------------------
146 // for each PERSON-URL pair we keep this
148 URL *url; // de-duplicated URL
149 MACHINE *machine; // link the MACHINE of this URL
152 uint32_t first_t; // the first time we saw this
153 uint32_t last_t; // the last time we saw this
154 uint32_t usages; // how many times this has been accessed
156 char name[1]; // the name of the URL, as known by the user
157 // dynamically allocated to fit properly
159 typedef struct person_url PERSON_URL;
163 char guid[36 + 1]; // the person GUID
165 DICTIONARY *urls; // dictionary of PERSON_URL *
167 uint32_t first_t; // the first time we saw this
168 uint32_t last_t; // the last time we saw this
169 uint32_t usages; // how many times this has been accessed
171 typedef struct person PERSON;
174 // ----------------------------------------------------------------------------
175 // REGISTRY concurrency locking
177 static inline void registry_persons_lock(void) {
178 pthread_mutex_lock(®istry.persons_lock);
181 static inline void registry_persons_unlock(void) {
182 pthread_mutex_unlock(®istry.persons_lock);
185 static inline void registry_machines_lock(void) {
186 pthread_mutex_lock(®istry.machines_lock);
189 static inline void registry_machines_unlock(void) {
190 pthread_mutex_unlock(®istry.machines_lock);
193 static inline void registry_urls_lock(void) {
194 pthread_mutex_lock(®istry.urls_lock);
197 static inline void registry_urls_unlock(void) {
198 pthread_mutex_unlock(®istry.urls_lock);
201 // ideally, we should not lock the whole registry for
202 // updating a person's urls.
203 // however, to save the memory required for keeping a
204 // mutex (40 bytes) per person, we do...
205 static inline void registry_person_urls_lock(PERSON *p) {
207 pthread_mutex_lock(®istry.person_urls_lock);
210 static inline void registry_person_urls_unlock(PERSON *p) {
212 pthread_mutex_unlock(®istry.person_urls_lock);
215 // ideally, we should not lock the whole registry for
216 // updating a machine's urls.
217 // however, to save the memory required for keeping a
218 // mutex (40 bytes) per machine, we do...
219 static inline void registry_machine_urls_lock(MACHINE *m) {
221 pthread_mutex_lock(®istry.machine_urls_lock);
224 static inline void registry_machine_urls_unlock(MACHINE *m) {
226 pthread_mutex_unlock(®istry.machine_urls_lock);
229 static inline void registry_log_lock(void) {
230 pthread_mutex_lock(®istry.log_lock);
233 static inline void registry_log_unlock(void) {
234 pthread_mutex_unlock(®istry.log_lock);
238 // ----------------------------------------------------------------------------
241 // parse a GUID and re-generated to be always lower case
242 // this is used as a protection against the variations of GUIDs
243 static inline int registry_regenerate_guid(const char *guid, char *result) {
245 if(unlikely(uuid_parse(guid, uuid) == -1)) {
246 info("Registry: GUID '%s' is not a valid GUID.", guid);
250 uuid_unparse_lower(uuid, result);
252 #ifdef NETDATA_INTERNAL_CHECKS
253 if(strcmp(guid, result))
254 info("Registry: source GUID '%s' and re-generated GUID '%s' differ!", guid, result);
255 #endif /* NETDATA_INTERNAL_CHECKS */
261 // make sure the names of the machines / URLs do not contain any tabs
262 // (which are used as our separator in the database files)
263 // and are properly trimmed (before and after)
264 static inline char *registry_fix_machine_name(char *name, size_t *len) {
265 char *s = name?name:"";
267 // skip leading spaces
268 while(*s && isspace(*s)) s++;
270 // make sure all spaces are a SPACE
273 if(unlikely(isspace(*t)))
279 // remove trailing spaces
294 static inline char *registry_fix_url(char *url, size_t *len) {
295 return registry_fix_machine_name(url, len);
299 // ----------------------------------------------------------------------------
300 // forward definition of functions
302 extern PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when);
303 extern PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when);
306 // ----------------------------------------------------------------------------
309 static inline URL *registry_url_allocate_nolock(const char *url, size_t urllen) {
310 // protection from too big URLs
311 if(urllen > registry.max_url_length)
312 urllen = registry.max_url_length;
314 debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): allocating %zu bytes", url, sizeof(URL) + urllen);
315 URL *u = mallocz(sizeof(URL) + urllen);
317 // a simple strcpy() should do the job
318 // but I prefer to be safe, since the caller specified urllen
319 u->len = (uint16_t)urllen;
320 strncpyz(u->url, url, u->len);
323 registry.urls_memory += sizeof(URL) + urllen;
325 debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): indexing it", url);
326 dictionary_set(registry.urls, u->url, u, sizeof(URL));
331 static inline URL *registry_url_get_nolock(const char *url, size_t urllen) {
332 debug(D_REGISTRY, "Registry: registry_url_get_nolock('%s')", url);
334 URL *u = dictionary_get(registry.urls, url);
336 u = registry_url_allocate_nolock(url, urllen);
337 registry.urls_count++;
343 static inline URL *registry_url_get(const char *url, size_t urllen) {
344 debug(D_REGISTRY, "Registry: registry_url_get('%s')", url);
346 registry_urls_lock();
348 URL *u = registry_url_get_nolock(url, urllen);
350 registry_urls_unlock();
355 static inline void registry_url_link_nolock(URL *u) {
357 debug(D_REGISTRY, "Registry: registry_url_link_nolock('%s'): URL has now %u links", u->url, u->links);
360 static inline void registry_url_unlink_nolock(URL *u) {
363 debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): No more links for this URL", u->url);
364 dictionary_del(registry.urls, u->url);
368 debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): URL has %u links left", u->url, u->links);
372 // ----------------------------------------------------------------------------
375 static inline MACHINE *registry_machine_find(const char *machine_guid) {
376 debug(D_REGISTRY, "Registry: registry_machine_find('%s')", machine_guid);
377 return dictionary_get(registry.machines, machine_guid);
380 static inline MACHINE_URL *registry_machine_url_allocate(MACHINE *m, URL *u, time_t when) {
381 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): allocating %zu bytes", m->guid, u->url, sizeof(MACHINE_URL));
383 MACHINE_URL *mu = mallocz(sizeof(MACHINE_URL));
385 // mu->persons = dictionary_create(DICTIONARY_FLAGS);
386 // dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
388 mu->first_t = mu->last_t = (uint32_t)when;
391 mu->flags = REGISTRY_URL_FLAGS_DEFAULT;
393 registry.machines_urls_memory += sizeof(MACHINE_URL);
395 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): indexing URL in machine", m->guid, u->url);
396 dictionary_set(m->urls, u->url, mu, sizeof(MACHINE_URL));
397 registry_url_link_nolock(u);
402 static inline MACHINE *registry_machine_allocate(const char *machine_guid, time_t when) {
403 debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating new machine, sizeof(MACHINE)=%zu", machine_guid, sizeof(MACHINE));
405 MACHINE *m = mallocz(sizeof(MACHINE));
407 strncpyz(m->guid, machine_guid, 36);
409 debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating dictionary of urls", machine_guid);
410 m->urls = dictionary_create(DICTIONARY_FLAGS);
412 m->first_t = m->last_t = (uint32_t)when;
415 registry.machines_memory += sizeof(MACHINE);
417 registry.machines_count++;
418 dictionary_set(registry.machines, m->guid, m, sizeof(MACHINE));
423 // 1. validate machine GUID
424 // 2. if it is valid, find it or create it and return it
425 // 3. if it is not valid, return NULL
426 static inline MACHINE *registry_machine_get(const char *machine_guid, time_t when) {
429 registry_machines_lock();
431 if(likely(machine_guid && *machine_guid)) {
432 // validate it is a GUID
434 if(unlikely(registry_regenerate_guid(machine_guid, buf) == -1))
435 info("Registry: machine guid '%s' is not a valid guid. Ignoring it.", machine_guid);
438 m = registry_machine_find(machine_guid);
439 if(!m) m = registry_machine_allocate(machine_guid, when);
443 registry_machines_unlock();
449 // ----------------------------------------------------------------------------
452 static inline PERSON *registry_person_find(const char *person_guid) {
453 debug(D_REGISTRY, "Registry: registry_person_find('%s')", person_guid);
454 return dictionary_get(registry.persons, person_guid);
457 static inline PERSON_URL *registry_person_url_allocate(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) {
458 // protection from too big names
459 if(namelen > registry.max_name_length)
460 namelen = registry.max_name_length;
462 debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url,
463 sizeof(PERSON_URL) + namelen);
465 PERSON_URL *pu = mallocz(sizeof(PERSON_URL) + namelen);
467 // a simple strcpy() should do the job
468 // but I prefer to be safe, since the caller specified urllen
469 strncpyz(pu->name, name, namelen);
472 pu->first_t = pu->last_t = when;
475 pu->flags = REGISTRY_URL_FLAGS_DEFAULT;
478 registry.persons_urls_memory += sizeof(PERSON_URL) + namelen;
480 debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): indexing URL in person", p->guid, m->guid, u->url);
481 dictionary_set(p->urls, u->url, pu, sizeof(PERSON_URL));
482 registry_url_link_nolock(u);
487 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) {
488 // this function is needed to change the name of a PERSON_URL
490 debug(D_REGISTRY, "registry_person_url_reallocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url,
491 sizeof(PERSON_URL) + namelen);
493 PERSON_URL *tpu = registry_person_url_allocate(p, m, u, name, namelen, when);
494 tpu->first_t = pu->first_t;
495 tpu->last_t = pu->last_t;
496 tpu->usages = pu->usages;
498 // ok, these are a hack - since the registry_person_url_allocate() is
499 // adding these, we have to subtract them
500 tpu->machine->links--;
501 registry.persons_urls_memory -= sizeof(PERSON_URL) + strlen(pu->name);
502 registry_url_unlink_nolock(u);
509 static inline PERSON *registry_person_allocate(const char *person_guid, time_t when) {
512 debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): allocating new person, sizeof(PERSON)=%zu", (person_guid)?person_guid:"", sizeof(PERSON));
514 p = mallocz(sizeof(PERSON));
520 uuid_unparse_lower(uuid, p->guid);
522 debug(D_REGISTRY, "Registry: Checking if the generated person guid '%s' is unique", p->guid);
523 if (!dictionary_get(registry.persons, p->guid)) {
524 debug(D_REGISTRY, "Registry: generated person guid '%s' is unique", p->guid);
528 info("Registry: generated person guid '%s' found in the registry. Retrying...", p->guid);
532 strncpyz(p->guid, person_guid, 36);
534 debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): creating dictionary of urls", p->guid);
535 p->urls = dictionary_create(DICTIONARY_FLAGS);
537 p->first_t = p->last_t = when;
540 registry.persons_memory += sizeof(PERSON);
542 registry.persons_count++;
543 dictionary_set(registry.persons, p->guid, p, sizeof(PERSON));
549 // 1. validate person GUID
550 // 2. if it is valid, find it
551 // 3. if it is not valid, create a new one
553 static inline PERSON *registry_person_get(const char *person_guid, time_t when) {
556 registry_persons_lock();
558 if(person_guid && *person_guid) {
560 // validate it is a GUID
561 if(unlikely(registry_regenerate_guid(person_guid, buf) == -1))
562 info("Registry: person guid '%s' is not a valid guid. Ignoring it.", person_guid);
565 p = registry_person_find(person_guid);
566 if(!p) person_guid = NULL;
570 if(!p) p = registry_person_allocate(NULL, when);
572 registry_persons_unlock();
577 // ----------------------------------------------------------------------------
578 // LINKING OF OBJECTS
580 static inline PERSON_URL *registry_person_link_to_url(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) {
581 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): searching for URL in person", p->guid, m->guid, u->url);
583 registry_person_urls_lock(p);
585 PERSON_URL *pu = dictionary_get(p->urls, u->url);
587 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
588 pu = registry_person_url_allocate(p, m, u, name, namelen, when);
589 registry.persons_urls_count++;
592 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
594 if(likely(pu->last_t < (uint32_t)when)) pu->last_t = when;
596 if(pu->machine != m) {
597 MACHINE_URL *mu = dictionary_get(pu->machine->urls, u->url);
599 info("registry_person_link_to_url('%s', '%s', '%s'): URL switched machines (old was '%s') - expiring it from previous machine.",
600 p->guid, m->guid, u->url, pu->machine->guid);
601 mu->flags |= REGISTRY_URL_FLAGS_EXPIRED;
604 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.",
605 p->guid, m->guid, u->url, pu->machine->guid);
608 pu->machine->links--;
612 if(strcmp(pu->name, name)) {
613 // the name of the PERSON_URL has changed !
614 pu = registry_person_url_reallocate(p, m, u, name, namelen, when, pu);
619 if(likely(p->last_t < (uint32_t)when)) p->last_t = when;
621 if(pu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
622 info("registry_person_link_to_url('%s', '%s', '%s'): accessing an expired URL. Re-enabling URL.", p->guid, m->guid, u->url);
623 pu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
626 registry_person_urls_unlock(p);
631 static inline MACHINE_URL *registry_machine_link_to_url(PERSON *p, MACHINE *m, URL *u, time_t when) {
632 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): searching for URL in machine", p->guid, m->guid, u->url);
634 registry_machine_urls_lock(m);
636 MACHINE_URL *mu = dictionary_get(m->urls, u->url);
638 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
639 mu = registry_machine_url_allocate(m, u, when);
640 registry.machines_urls_count++;
643 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
645 if(likely(mu->last_t < (uint32_t)when)) mu->last_t = when;
648 //debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): indexing person in machine", p->guid, m->guid, u->url);
649 //dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
652 if(likely(m->last_t < (uint32_t)when)) m->last_t = when;
654 if(mu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
655 info("registry_machine_link_to_url('%s', '%s', '%s'): accessing an expired URL.", p->guid, m->guid, u->url);
656 mu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
659 registry_machine_urls_unlock(m);
664 // ----------------------------------------------------------------------------
665 // REGISTRY LOG LOAD/SAVE
667 static inline int registry_should_save_db(void) {
668 debug(D_REGISTRY, "log entries %llu, max %llu", registry.log_count, registry.save_registry_every_entries);
669 return registry.log_count > registry.save_registry_every_entries;
672 static inline void registry_log(const char action, PERSON *p, MACHINE *m, URL *u, char *name) {
673 if(likely(registry.log_fp)) {
674 // we lock only if the file is open
675 // to allow replaying the log at registry_log_load()
678 if(unlikely(fprintf(registry.log_fp, "%c\t%08x\t%s\t%s\t%s\t%s\n",
685 error("Registry: failed to save log. Registry data may be lost in case of abnormal restart.");
687 // we increase the counter even on failures
688 // so that the registry will be saved periodically
689 registry.log_count++;
691 registry_log_unlock();
693 // this must be outside the log_lock(), or a deadlock will happen.
694 // registry_save() checks the same inside the log_lock, so only
695 // one thread will save the db
696 if(unlikely(registry_should_save_db()))
701 static inline int registry_log_open_nolock(void) {
703 fclose(registry.log_fp);
705 registry.log_fp = fopen(registry.log_filename, "a");
707 if(registry.log_fp) {
708 if (setvbuf(registry.log_fp, NULL, _IOLBF, 0) != 0)
709 error("Cannot set line buffering on registry log file.");
713 error("Cannot open registry log file '%s'. Registry data will be lost in case of netdata or server crash.", registry.log_filename);
717 static inline void registry_log_close_nolock(void) {
718 if(registry.log_fp) {
719 fclose(registry.log_fp);
720 registry.log_fp = NULL;
724 static inline void registry_log_recreate_nolock(void) {
725 if(registry.log_fp != NULL) {
726 registry_log_close_nolock();
728 // open it with truncate
729 registry.log_fp = fopen(registry.log_filename, "w");
730 if(registry.log_fp) fclose(registry.log_fp);
731 else error("Cannot truncate registry log '%s'", registry.log_filename);
733 registry.log_fp = NULL;
735 registry_log_open_nolock();
739 int registry_log_load(void) {
740 char *s, buf[4096 + 1];
743 // closing the log is required here
744 // otherwise we will append to it the values we read
745 registry_log_close_nolock();
747 debug(D_REGISTRY, "Registry: loading active db from: %s", registry.log_filename);
748 FILE *fp = fopen(registry.log_filename, "r");
750 error("Registry: cannot open registry file: %s", registry.log_filename);
754 while ((s = fgets_trim_len(buf, 4096, fp, &len))) {
758 case 'A': // accesses
761 // verify it is valid
762 if (unlikely(len < 85 || s[1] != '\t' || s[10] != '\t' || s[47] != '\t' || s[84] != '\t')) {
763 error("Registry: log line %zu is wrong (len = %zu).", line, len);
766 s[1] = s[10] = s[47] = s[84] = '\0';
769 time_t when = strtoul(&s[2], NULL, 16);
770 char *person_guid = &s[11];
771 char *machine_guid = &s[48];
774 // skip the name to find the url
776 while(*url && *url != '\t') url++;
778 error("Registry: log line %zu does not have a url.", line);
783 // make sure the person exists
784 // without this, a new person guid will be created
785 PERSON *p = registry_person_find(person_guid);
786 if(!p) p = registry_person_allocate(person_guid, when);
789 registry_request_access(p->guid, machine_guid, url, name, when);
791 registry_request_delete(p->guid, machine_guid, url, name, when);
793 registry.log_count++;
797 error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.log_filename, s);
805 // open the log again
806 registry_log_open_nolock();
812 // ----------------------------------------------------------------------------
815 PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
816 debug(D_REGISTRY, "registry_request_access('%s', '%s', '%s'): NEW REQUEST", (person_guid)?person_guid:"", machine_guid, url);
818 MACHINE *m = registry_machine_get(machine_guid, when);
821 // make sure the name is valid
823 name = registry_fix_machine_name(name, &namelen);
826 url = registry_fix_url(url, &urllen);
828 URL *u = registry_url_get(url, urllen);
829 PERSON *p = registry_person_get(person_guid, when);
831 registry_person_link_to_url(p, m, u, name, namelen, when);
832 registry_machine_link_to_url(p, m, u, when);
834 registry_log('A', p, m, u, name);
836 registry.usages_count++;
840 // verify the person, the machine and the URL exist in our DB
841 PERSON_URL *registry_verify_request(char *person_guid, char *machine_guid, char *url, PERSON **pp, MACHINE **mm) {
842 char pbuf[36 + 1], mbuf[36 + 1];
844 if(!person_guid || !*person_guid || !machine_guid || !*machine_guid || !url || !*url) {
845 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");
850 url = registry_fix_url(url, NULL);
852 // make sure the person GUID is valid
853 if(registry_regenerate_guid(person_guid, pbuf) == -1) {
854 info("Registry Request Verification: invalid person GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
859 // make sure the machine GUID is valid
860 if(registry_regenerate_guid(machine_guid, mbuf) == -1) {
861 info("Registry Request Verification: invalid machine GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
866 // make sure the machine exists
867 MACHINE *m = registry_machine_find(machine_guid);
869 info("Registry Request Verification: machine not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
874 // make sure the person exist
875 PERSON *p = registry_person_find(person_guid);
877 info("Registry Request Verification: person not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
882 PERSON_URL *pu = dictionary_get(p->urls, url);
884 info("Registry Request Verification: URL not found for person, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
890 PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) {
895 PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m);
896 if(!pu || !p || !m) return NULL;
899 delete_url = registry_fix_url(delete_url, NULL);
901 // make sure the user is not deleting the url it uses
902 if(!strcmp(delete_url, pu->url->url)) {
903 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);
907 registry_person_urls_lock(p);
909 PERSON_URL *dpu = dictionary_get(p->urls, delete_url);
911 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);
912 registry_person_urls_unlock(p);
916 registry_log('D', p, m, pu->url, dpu->url->url);
918 dictionary_del(p->urls, dpu->url->url);
919 registry_url_unlink_nolock(dpu->url);
922 registry_person_urls_unlock(p);
927 // a structure to pass to the dictionary_get_all() callback handler
928 struct machine_request_callback_data {
929 MACHINE *find_this_machine;
933 // the callback function
934 // this will be run for every PERSON_URL of this PERSON
935 int machine_request_callback(void *entry, void *data) {
936 PERSON_URL *mypu = (PERSON_URL *)entry;
937 struct machine_request_callback_data *myrdata = (struct machine_request_callback_data *)data;
939 if(mypu->machine == myrdata->find_this_machine) {
940 myrdata->result = mypu;
941 return -1; // this will also stop the walk through
944 return 0; // continue
947 MACHINE *registry_request_machine(char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) {
954 PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m);
955 if(!pu || !p || !m) return NULL;
957 // make sure the machine GUID is valid
958 if(registry_regenerate_guid(request_machine, mbuf) == -1) {
959 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);
962 request_machine = mbuf;
964 // make sure the machine exists
965 m = registry_machine_find(request_machine);
967 info("Registry Machine URLs request: machine not found, person: '%s', machine '%s', url '%s', request machine '%s'", p->guid, m->guid, pu->url->url, request_machine);
971 // Verify the user has in the past accessed this machine
972 // We will walk through the PERSON_URLs to find the machine
973 // linking to our machine
975 // a structure to pass to the dictionary_get_all() callback handler
976 struct machine_request_callback_data rdata = { m, NULL };
978 // request a walk through on the dictionary
979 // no need for locking here, the underlying dictionary has its own
980 dictionary_get_all(p->urls, machine_request_callback, &rdata);
989 // ----------------------------------------------------------------------------
990 // REGISTRY JSON generation
992 #define REGISTRY_STATUS_OK "ok"
993 #define REGISTRY_STATUS_FAILED "failed"
994 #define REGISTRY_STATUS_DISABLED "disabled"
996 int registry_verify_cookies_redirects(void) {
997 return registry.verify_cookies_redirects;
1000 const char *registry_to_announce(void) {
1001 return registry.registry_to_announce;
1004 void registry_set_cookie(struct web_client *w, const char *guid) {
1006 time_t et = time(NULL) + registry.persons_expiration;
1007 struct tm etmbuf, *etm = gmtime_r(&et, &etmbuf);
1008 strftime(edate, sizeof(edate), "%a, %d %b %Y %H:%M:%S %Z", etm);
1010 snprintfz(w->cookie1, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Expires=%s", guid, edate);
1012 if(registry.registry_domain && registry.registry_domain[0])
1013 snprintfz(w->cookie2, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Domain=%s; Expires=%s", guid, registry.registry_domain, edate);
1016 static inline void registry_set_person_cookie(struct web_client *w, PERSON *p) {
1017 registry_set_cookie(w, p->guid);
1020 static inline void registry_json_header(struct web_client *w, const char *action, const char *status) {
1021 buffer_flush(w->response.data);
1022 w->response.data->contenttype = CT_APPLICATION_JSON;
1023 buffer_sprintf(w->response.data, "{\n\t\"action\": \"%s\",\n\t\"status\": \"%s\",\n\t\"hostname\": \"%s\",\n\t\"machine_guid\": \"%s\"",
1024 action, status, registry.hostname, registry.machine_guid);
1027 static inline void registry_json_footer(struct web_client *w) {
1028 buffer_strcat(w->response.data, "\n}\n");
1031 int registry_request_hello_json(struct web_client *w) {
1032 registry_json_header(w, "hello", REGISTRY_STATUS_OK);
1034 buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
1035 registry.registry_to_announce);
1037 registry_json_footer(w);
1041 static inline int registry_json_disabled(struct web_client *w, const char *action) {
1042 registry_json_header(w, action, REGISTRY_STATUS_DISABLED);
1044 buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
1045 registry.registry_to_announce);
1047 registry_json_footer(w);
1051 // structure used be the callbacks below
1052 struct registry_json_walk_person_urls_callback {
1055 struct web_client *w;
1059 // callback for rendering PERSON_URLs
1060 static inline int registry_json_person_url_callback(void *entry, void *data) {
1061 PERSON_URL *pu = (PERSON_URL *)entry;
1062 struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data;
1063 struct web_client *w = c->w;
1065 if(unlikely(c->count++))
1066 buffer_strcat(w->response.data, ",");
1068 buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u, \"%s\" ]",
1069 pu->machine->guid, pu->url->url, pu->last_t, pu->usages, pu->name);
1074 // callback for rendering MACHINE_URLs
1075 static inline int registry_json_machine_url_callback(void *entry, void *data) {
1076 MACHINE_URL *mu = (MACHINE_URL *)entry;
1077 struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data;
1078 struct web_client *w = c->w;
1081 if(unlikely(c->count++))
1082 buffer_strcat(w->response.data, ",");
1084 buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u ]",
1085 m->guid, mu->url->url, mu->last_t, mu->usages);
1091 // the main method for registering an access
1092 int registry_request_access_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
1093 if(!registry.enabled)
1094 return registry_json_disabled(w, "access");
1096 PERSON *p = registry_request_access(person_guid, machine_guid, url, name, when);
1098 registry_json_header(w, "access", REGISTRY_STATUS_FAILED);
1099 registry_json_footer(w);
1104 registry_set_person_cookie(w, p);
1106 // generate the response
1107 registry_json_header(w, "access", REGISTRY_STATUS_OK);
1109 buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\",\n\t\"urls\": [", p->guid);
1110 struct registry_json_walk_person_urls_callback c = { p, NULL, w, 0 };
1111 dictionary_get_all(p->urls, registry_json_person_url_callback, &c);
1112 buffer_strcat(w->response.data, "\n\t]\n");
1114 registry_json_footer(w);
1118 // the main method for deleting a URL from a person
1119 int registry_request_delete_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) {
1120 if(!registry.enabled)
1121 return registry_json_disabled(w, "delete");
1123 PERSON *p = registry_request_delete(person_guid, machine_guid, url, delete_url, when);
1125 registry_json_header(w, "delete", REGISTRY_STATUS_FAILED);
1126 registry_json_footer(w);
1130 // generate the response
1131 registry_json_header(w, "delete", REGISTRY_STATUS_OK);
1132 registry_json_footer(w);
1136 // the main method for searching the URLs of a netdata
1137 int registry_request_search_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) {
1138 if(!registry.enabled)
1139 return registry_json_disabled(w, "search");
1141 MACHINE *m = registry_request_machine(person_guid, machine_guid, url, request_machine, when);
1143 registry_json_header(w, "search", REGISTRY_STATUS_FAILED);
1144 registry_json_footer(w);
1148 registry_json_header(w, "search", REGISTRY_STATUS_OK);
1150 buffer_strcat(w->response.data, ",\n\t\"urls\": [");
1151 struct registry_json_walk_person_urls_callback c = { NULL, m, w, 0 };
1152 dictionary_get_all(m->urls, registry_json_machine_url_callback, &c);
1153 buffer_strcat(w->response.data, "\n\t]\n");
1155 registry_json_footer(w);
1159 // structure used be the callbacks below
1160 struct registry_person_url_callback_verify_machine_exists_data {
1165 int registry_person_url_callback_verify_machine_exists(void *entry, void *data) {
1166 struct registry_person_url_callback_verify_machine_exists_data *d = (struct registry_person_url_callback_verify_machine_exists_data *)data;
1167 PERSON_URL *pu = (PERSON_URL *)entry;
1170 if(pu->machine == m)
1176 // the main method for switching user identity
1177 int registry_request_switch_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *new_person_guid, time_t when) {
1181 if(!registry.enabled)
1182 return registry_json_disabled(w, "switch");
1184 PERSON *op = registry_person_find(person_guid);
1186 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1187 registry_json_footer(w);
1191 PERSON *np = registry_person_find(new_person_guid);
1193 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1194 registry_json_footer(w);
1198 MACHINE *m = registry_machine_find(machine_guid);
1200 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1201 registry_json_footer(w);
1205 struct registry_person_url_callback_verify_machine_exists_data data = { m, 0 };
1207 // verify the old person has access to this machine
1208 dictionary_get_all(op->urls, registry_person_url_callback_verify_machine_exists, &data);
1210 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1211 registry_json_footer(w);
1215 // verify the new person has access to this machine
1217 dictionary_get_all(np->urls, registry_person_url_callback_verify_machine_exists, &data);
1219 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1220 registry_json_footer(w);
1224 // set the cookie of the new person
1225 // the user just switched identity
1226 registry_set_person_cookie(w, np);
1228 // generate the response
1229 registry_json_header(w, "switch", REGISTRY_STATUS_OK);
1230 buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\"", np->guid);
1231 registry_json_footer(w);
1236 // ----------------------------------------------------------------------------
1237 // REGISTRY THIS MACHINE UNIQUE ID
1239 static inline int is_machine_guid_blacklisted(const char *guid) {
1240 // these are machine GUIDs that have been included in distribution packages.
1241 // we blacklist them here, so that the next version of netdata will generate
1244 if(!strcmp(guid, "8a795b0c-2311-11e6-8563-000c295076a6")
1245 || !strcmp(guid, "4aed1458-1c3e-11e6-a53f-000c290fc8f5")
1247 error("Blacklisted machine GUID '%s' found.", guid);
1254 char *registry_get_this_machine_guid(void) {
1255 if(likely(registry.machine_guid[0]))
1256 return registry.machine_guid;
1258 // read it from disk
1259 int fd = open(registry.machine_guid_filename, O_RDONLY);
1262 if(read(fd, buf, 36) != 36)
1263 error("Failed to read machine GUID from '%s'", registry.machine_guid_filename);
1266 if(registry_regenerate_guid(buf, registry.machine_guid) == -1) {
1267 error("Failed to validate machine GUID '%s' from '%s'. Ignoring it - this might mean this netdata will appear as duplicate in the registry.",
1268 buf, registry.machine_guid_filename);
1270 registry.machine_guid[0] = '\0';
1272 else if(is_machine_guid_blacklisted(registry.machine_guid))
1273 registry.machine_guid[0] = '\0';
1278 // generate a new one?
1279 if(!registry.machine_guid[0]) {
1282 uuid_generate_time(uuid);
1283 uuid_unparse_lower(uuid, registry.machine_guid);
1284 registry.machine_guid[36] = '\0';
1287 fd = open(registry.machine_guid_filename, O_WRONLY|O_CREAT|O_TRUNC, 444);
1289 fatal("Cannot create unique machine id file '%s'. Please fix this.", registry.machine_guid_filename);
1291 if(write(fd, registry.machine_guid, 36) != 36)
1292 fatal("Cannot write the unique machine id file '%s'. Please fix this.", registry.machine_guid_filename);
1297 setenv("NETDATA_REGISTRY_UNIQUE_ID", registry.machine_guid, 1);
1299 return registry.machine_guid;
1303 // ----------------------------------------------------------------------------
1304 // REGISTRY LOAD/SAVE
1306 int registry_machine_save_url(void *entry, void *file) {
1307 MACHINE_URL *mu = entry;
1310 debug(D_REGISTRY, "Registry: registry_machine_save_url('%s')", mu->url->url);
1312 int ret = fprintf(fp, "V\t%08x\t%08x\t%08x\t%02x\t%s\n",
1320 // error handling is done at registry_save()
1325 int registry_machine_save(void *entry, void *file) {
1329 debug(D_REGISTRY, "Registry: registry_machine_save('%s')", m->guid);
1331 int ret = fprintf(fp, "M\t%08x\t%08x\t%08x\t%s\n",
1339 int ret2 = dictionary_get_all(m->urls, registry_machine_save_url, fp);
1340 if(ret2 < 0) return ret2;
1344 // error handling is done at registry_save()
1349 static inline int registry_person_save_url(void *entry, void *file) {
1350 PERSON_URL *pu = entry;
1353 debug(D_REGISTRY, "Registry: registry_person_save_url('%s')", pu->url->url);
1355 int ret = fprintf(fp, "U\t%08x\t%08x\t%08x\t%02x\t%s\t%s\t%s\n",
1365 // error handling is done at registry_save()
1370 static inline int registry_person_save(void *entry, void *file) {
1374 debug(D_REGISTRY, "Registry: registry_person_save('%s')", p->guid);
1376 int ret = fprintf(fp, "P\t%08x\t%08x\t%08x\t%s\n",
1384 int ret2 = dictionary_get_all(p->urls, registry_person_save_url, fp);
1385 if (ret2 < 0) return ret2;
1389 // error handling is done at registry_save()
1394 int registry_save(void) {
1395 if(!registry.enabled) return -1;
1397 // make sure the log is not updated
1398 registry_log_lock();
1400 if(unlikely(!registry_should_save_db())) {
1401 registry_log_unlock();
1405 error_log_limit_unlimited();
1407 char tmp_filename[FILENAME_MAX + 1];
1408 char old_filename[FILENAME_MAX + 1];
1410 snprintfz(old_filename, FILENAME_MAX, "%s.old", registry.db_filename);
1411 snprintfz(tmp_filename, FILENAME_MAX, "%s.tmp", registry.db_filename);
1413 debug(D_REGISTRY, "Registry: Creating file '%s'", tmp_filename);
1414 FILE *fp = fopen(tmp_filename, "w");
1416 error("Registry: Cannot create file: %s", tmp_filename);
1417 registry_log_unlock();
1418 error_log_limit_reset();
1422 // dictionary_get_all() has its own locking, so this is safe to do
1424 debug(D_REGISTRY, "Saving all machines");
1425 int bytes1 = dictionary_get_all(registry.machines, registry_machine_save, fp);
1427 error("Registry: Cannot save registry machines - return value %d", bytes1);
1429 registry_log_unlock();
1430 error_log_limit_reset();
1433 debug(D_REGISTRY, "Registry: saving machines took %d bytes", bytes1);
1435 debug(D_REGISTRY, "Saving all persons");
1436 int bytes2 = dictionary_get_all(registry.persons, registry_person_save, fp);
1438 error("Registry: Cannot save registry persons - return value %d", bytes2);
1440 registry_log_unlock();
1441 error_log_limit_reset();
1444 debug(D_REGISTRY, "Registry: saving persons took %d bytes", bytes2);
1447 fprintf(fp, "T\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\n",
1448 registry.persons_count,
1449 registry.machines_count,
1450 registry.usages_count + 1, // this is required - it is lost on db rotation
1451 registry.urls_count,
1452 registry.persons_urls_count,
1453 registry.machines_urls_count
1460 // remove the .old db
1461 debug(D_REGISTRY, "Registry: Removing old db '%s'", old_filename);
1462 if(unlink(old_filename) == -1 && errno != ENOENT)
1463 error("Registry: cannot remove old registry file '%s'", old_filename);
1465 // rename the db to .old
1466 debug(D_REGISTRY, "Registry: Link current db '%s' to .old: '%s'", registry.db_filename, old_filename);
1467 if(link(registry.db_filename, old_filename) == -1 && errno != ENOENT)
1468 error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename, registry.db_filename);
1471 // remove the database (it is saved in .old)
1472 debug(D_REGISTRY, "Registry: removing db '%s'", registry.db_filename);
1473 if (unlink(registry.db_filename) == -1 && errno != ENOENT)
1474 error("Registry: cannot remove old registry file '%s'", registry.db_filename);
1476 // move the .tmp to make it active
1477 debug(D_REGISTRY, "Registry: linking tmp db '%s' to active db '%s'", tmp_filename, registry.db_filename);
1478 if (link(tmp_filename, registry.db_filename) == -1) {
1479 error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename,
1480 registry.db_filename);
1482 // move the .old back
1483 debug(D_REGISTRY, "Registry: linking old db '%s' to active db '%s'", old_filename, registry.db_filename);
1484 if(link(old_filename, registry.db_filename) == -1)
1485 error("Registry: cannot move file '%s' to '%s'. Recovering the old registry DB failed!", old_filename, registry.db_filename);
1488 debug(D_REGISTRY, "Registry: removing tmp db '%s'", tmp_filename);
1489 if(unlink(tmp_filename) == -1)
1490 error("Registry: cannot remove tmp registry file '%s'", tmp_filename);
1492 // it has been moved successfully
1493 // discard the current registry log
1494 registry_log_recreate_nolock();
1495 registry.log_count = 0;
1499 // continue operations
1500 registry_log_unlock();
1501 error_log_limit_reset();
1506 static inline size_t registry_load(void) {
1507 char *s, buf[4096 + 1];
1513 debug(D_REGISTRY, "Registry: loading active db from: '%s'", registry.db_filename);
1514 FILE *fp = fopen(registry.db_filename, "r");
1516 error("Registry: cannot open registry file: '%s'", registry.db_filename);
1522 while((s = fgets_trim_len(buf, 4096, fp, &len))) {
1525 debug(D_REGISTRY, "Registry: read line %zu to length %zu: %s", line, len, s);
1528 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')) {
1529 error("Registry totals line %zu is wrong (len = %zu).", line, len);
1532 registry.persons_count = strtoull(&s[2], NULL, 16);
1533 registry.machines_count = strtoull(&s[19], NULL, 16);
1534 registry.usages_count = strtoull(&s[36], NULL, 16);
1535 registry.urls_count = strtoull(&s[53], NULL, 16);
1536 registry.persons_urls_count = strtoull(&s[70], NULL, 16);
1537 registry.machines_urls_count = strtoull(&s[87], NULL, 16);
1542 // verify it is valid
1543 if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) {
1544 error("Registry person line %zu is wrong (len = %zu).", line, len);
1548 s[1] = s[10] = s[19] = s[28] = '\0';
1549 p = registry_person_allocate(&s[29], strtoul(&s[2], NULL, 16));
1550 p->last_t = strtoul(&s[11], NULL, 16);
1551 p->usages = strtoul(&s[20], NULL, 16);
1552 debug(D_REGISTRY, "Registry loaded person '%s', first: %u, last: %u, usages: %u", p->guid, p->first_t, p->last_t, p->usages);
1555 case 'M': // machine
1557 // verify it is valid
1558 if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) {
1559 error("Registry person line %zu is wrong (len = %zu).", line, len);
1563 s[1] = s[10] = s[19] = s[28] = '\0';
1564 m = registry_machine_allocate(&s[29], strtoul(&s[2], NULL, 16));
1565 m->last_t = strtoul(&s[11], NULL, 16);
1566 m->usages = strtoul(&s[20], NULL, 16);
1567 debug(D_REGISTRY, "Registry loaded machine '%s', first: %u, last: %u, usages: %u", m->guid, m->first_t, m->last_t, m->usages);
1570 case 'U': // person URL
1572 error("Registry: ignoring line %zu, no person loaded: %s", line, s);
1576 // verify it is valid
1577 if(len < 69 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t' || s[68] != '\t') {
1578 error("Registry person URL line %zu is wrong (len = %zu).", line, len);
1582 s[1] = s[10] = s[19] = s[28] = s[31] = s[68] = '\0';
1584 // skip the name to find the url
1586 while(*url && *url != '\t') url++;
1588 error("Registry person URL line %zu does not have a url.", line);
1593 // u = registry_url_allocate_nolock(url, strlen(url));
1594 u = registry_url_get_nolock(url, strlen(url));
1596 time_t first_t = strtoul(&s[2], NULL, 16);
1598 m = registry_machine_find(&s[32]);
1599 if(!m) m = registry_machine_allocate(&s[32], first_t);
1601 PERSON_URL *pu = registry_person_url_allocate(p, m, u, &s[69], strlen(&s[69]), first_t);
1602 pu->last_t = strtoul(&s[11], NULL, 16);
1603 pu->usages = strtoul(&s[20], NULL, 16);
1604 pu->flags = strtoul(&s[29], NULL, 16);
1605 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);
1608 case 'V': // machine URL
1610 error("Registry: ignoring line %zu, no machine loaded: %s", line, s);
1614 // verify it is valid
1615 if(len < 32 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t') {
1616 error("Registry person URL line %zu is wrong (len = %zu).", line, len);
1620 s[1] = s[10] = s[19] = s[28] = s[31] = '\0';
1621 // u = registry_url_allocate_nolock(&s[32], strlen(&s[32]));
1622 u = registry_url_get_nolock(&s[32], strlen(&s[32]));
1624 MACHINE_URL *mu = registry_machine_url_allocate(m, u, strtoul(&s[2], NULL, 16));
1625 mu->last_t = strtoul(&s[11], NULL, 16);
1626 mu->usages = strtoul(&s[20], NULL, 16);
1627 mu->flags = strtoul(&s[29], NULL, 16);
1628 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);
1632 error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.db_filename, s);
1641 // ----------------------------------------------------------------------------
1644 int registry_init(void) {
1645 char filename[FILENAME_MAX + 1];
1647 // registry enabled?
1648 registry.enabled = config_get_boolean("registry", "enabled", 0);
1651 registry.pathname = config_get("registry", "registry db directory", VARLIB_DIR "/registry");
1652 if(mkdir(registry.pathname, 0770) == -1 && errno != EEXIST)
1653 fatal("Cannot create directory '%s'.", registry.pathname);
1656 snprintfz(filename, FILENAME_MAX, "%s/netdata.public.unique.id", registry.pathname);
1657 registry.machine_guid_filename = config_get("registry", "netdata unique id file", filename);
1658 registry_get_this_machine_guid();
1660 snprintfz(filename, FILENAME_MAX, "%s/registry.db", registry.pathname);
1661 registry.db_filename = config_get("registry", "registry db file", filename);
1663 snprintfz(filename, FILENAME_MAX, "%s/registry-log.db", registry.pathname);
1664 registry.log_filename = config_get("registry", "registry log file", filename);
1666 // configuration options
1667 registry.save_registry_every_entries = config_get_number("registry", "registry save db every new entries", 1000000);
1668 registry.persons_expiration = config_get_number("registry", "registry expire idle persons days", 365) * 86400;
1669 registry.registry_domain = config_get("registry", "registry domain", "");
1670 registry.registry_to_announce = config_get("registry", "registry to announce", "https://registry.my-netdata.io");
1671 registry.hostname = config_get("registry", "registry hostname", config_get("global", "hostname", localhost.hostname));
1672 registry.verify_cookies_redirects = config_get_boolean("registry", "verify browser cookies support", 1);
1674 setenv("NETDATA_REGISTRY_HOSTNAME", registry.hostname, 1);
1675 setenv("NETDATA_REGISTRY_URL", registry.registry_to_announce, 1);
1677 registry.max_url_length = config_get_number("registry", "max URL length", 1024);
1678 if(registry.max_url_length < 10) {
1679 registry.max_url_length = 10;
1680 config_set_number("registry", "max URL length", registry.max_url_length);
1683 registry.max_name_length = config_get_number("registry", "max URL name length", 50);
1684 if(registry.max_name_length < 10) {
1685 registry.max_name_length = 10;
1686 config_set_number("registry", "max URL name length", registry.max_name_length);
1689 // initialize entries counters
1690 registry.persons_count = 0;
1691 registry.machines_count = 0;
1692 registry.usages_count = 0;
1693 registry.urls_count = 0;
1694 registry.persons_urls_count = 0;
1695 registry.machines_urls_count = 0;
1697 // initialize memory counters
1698 registry.persons_memory = 0;
1699 registry.machines_memory = 0;
1700 registry.urls_memory = 0;
1701 registry.persons_urls_memory = 0;
1702 registry.machines_urls_memory = 0;
1705 pthread_mutex_init(®istry.persons_lock, NULL);
1706 pthread_mutex_init(®istry.machines_lock, NULL);
1707 pthread_mutex_init(®istry.urls_lock, NULL);
1708 pthread_mutex_init(®istry.person_urls_lock, NULL);
1709 pthread_mutex_init(®istry.machine_urls_lock, NULL);
1711 // create dictionaries
1712 registry.persons = dictionary_create(DICTIONARY_FLAGS);
1713 registry.machines = dictionary_create(DICTIONARY_FLAGS);
1714 registry.urls = dictionary_create(DICTIONARY_FLAGS);
1716 // load the registry database
1717 if(registry.enabled) {
1718 registry_log_open_nolock();
1720 registry_log_load();
1722 if(unlikely(registry_should_save_db()))
1729 void registry_free(void) {
1730 if(!registry.enabled) return;
1732 // we need to destroy the dictionaries ourselves
1733 // since the dictionaries use memory we allocated
1735 while(registry.persons->values_index.root) {
1736 PERSON *p = ((NAME_VALUE *)registry.persons->values_index.root)->value;
1738 // fprintf(stderr, "\nPERSON: '%s', first: %u, last: %u, usages: %u\n", p->guid, p->first_t, p->last_t, p->usages);
1740 while(p->urls->values_index.root) {
1741 PERSON_URL *pu = ((NAME_VALUE *)p->urls->values_index.root)->value;
1743 // 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);
1745 debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", pu->url->url, p->guid);
1746 dictionary_del(p->urls, pu->url->url);
1748 debug(D_REGISTRY, "Registry: unlinking url '%s' from person", pu->url->url);
1749 registry_url_unlink_nolock(pu->url);
1751 debug(D_REGISTRY, "Registry: freeing person url");
1755 debug(D_REGISTRY, "Registry: deleting person '%s' from persons registry", p->guid);
1756 dictionary_del(registry.persons, p->guid);
1758 debug(D_REGISTRY, "Registry: destroying URL dictionary of person '%s'", p->guid);
1759 dictionary_destroy(p->urls);
1761 debug(D_REGISTRY, "Registry: freeing person '%s'", p->guid);
1765 while(registry.machines->values_index.root) {
1766 MACHINE *m = ((NAME_VALUE *)registry.machines->values_index.root)->value;
1768 // fprintf(stderr, "\nMACHINE: '%s', first: %u, last: %u, usages: %u\n", m->guid, m->first_t, m->last_t, m->usages);
1770 while(m->urls->values_index.root) {
1771 MACHINE_URL *mu = ((NAME_VALUE *)m->urls->values_index.root)->value;
1773 // 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);
1775 //debug(D_REGISTRY, "Registry: destroying persons dictionary from url '%s'", mu->url->url);
1776 //dictionary_destroy(mu->persons);
1778 debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", mu->url->url, m->guid);
1779 dictionary_del(m->urls, mu->url->url);
1781 debug(D_REGISTRY, "Registry: unlinking url '%s' from machine", mu->url->url);
1782 registry_url_unlink_nolock(mu->url);
1784 debug(D_REGISTRY, "Registry: freeing machine url");
1788 debug(D_REGISTRY, "Registry: deleting machine '%s' from machines registry", m->guid);
1789 dictionary_del(registry.machines, m->guid);
1791 debug(D_REGISTRY, "Registry: destroying URL dictionary of machine '%s'", m->guid);
1792 dictionary_destroy(m->urls);
1794 debug(D_REGISTRY, "Registry: freeing machine '%s'", m->guid);
1798 // and free the memory of remaining dictionary structures
1800 debug(D_REGISTRY, "Registry: destroying persons dictionary");
1801 dictionary_destroy(registry.persons);
1803 debug(D_REGISTRY, "Registry: destroying machines dictionary");
1804 dictionary_destroy(registry.machines);
1806 debug(D_REGISTRY, "Registry: destroying urls dictionary");
1807 dictionary_destroy(registry.urls);
1810 // ----------------------------------------------------------------------------
1813 void registry_statistics(void) {
1814 if(!registry.enabled) return;
1816 static RRDSET *sts = NULL, *stc = NULL, *stm = NULL;
1818 if(!sts) sts = rrdset_find("netdata.registry_sessions");
1820 sts = rrdset_create("netdata", "registry_sessions", NULL, "registry", NULL, "NetData Registry Sessions", "session", 131000, rrd_update_every, RRDSET_TYPE_LINE);
1822 rrddim_add(sts, "sessions", NULL, 1, 1, RRDDIM_ABSOLUTE);
1824 else rrdset_next(sts);
1826 rrddim_set(sts, "sessions", registry.usages_count);
1829 // ------------------------------------------------------------------------
1831 if(!stc) stc = rrdset_find("netdata.registry_entries");
1833 stc = rrdset_create("netdata", "registry_entries", NULL, "registry", NULL, "NetData Registry Entries", "entries", 131100, rrd_update_every, RRDSET_TYPE_LINE);
1835 rrddim_add(stc, "persons", NULL, 1, 1, RRDDIM_ABSOLUTE);
1836 rrddim_add(stc, "machines", NULL, 1, 1, RRDDIM_ABSOLUTE);
1837 rrddim_add(stc, "urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1838 rrddim_add(stc, "persons_urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1839 rrddim_add(stc, "machines_urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1841 else rrdset_next(stc);
1843 rrddim_set(stc, "persons", registry.persons_count);
1844 rrddim_set(stc, "machines", registry.machines_count);
1845 rrddim_set(stc, "urls", registry.urls_count);
1846 rrddim_set(stc, "persons_urls", registry.persons_urls_count);
1847 rrddim_set(stc, "machines_urls", registry.machines_urls_count);
1850 // ------------------------------------------------------------------------
1852 if(!stm) stm = rrdset_find("netdata.registry_mem");
1854 stm = rrdset_create("netdata", "registry_mem", NULL, "registry", NULL, "NetData Registry Memory", "KB", 131300, rrd_update_every, RRDSET_TYPE_STACKED);
1856 rrddim_add(stm, "persons", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1857 rrddim_add(stm, "machines", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1858 rrddim_add(stm, "urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1859 rrddim_add(stm, "persons_urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1860 rrddim_add(stm, "machines_urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1862 else rrdset_next(stm);
1864 rrddim_set(stm, "persons", registry.persons_memory + registry.persons_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1865 rrddim_set(stm, "machines", registry.machines_memory + registry.machines_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1866 rrddim_set(stm, "urls", registry.urls_memory + registry.urls_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1867 rrddim_set(stm, "persons_urls", registry.persons_urls_memory + registry.persons_count * sizeof(DICTIONARY) + registry.persons_urls_count * sizeof(NAME_VALUE));
1868 rrddim_set(stm, "machines_urls", registry.machines_urls_memory + registry.machines_count * sizeof(DICTIONARY) + registry.machines_urls_count * sizeof(NAME_VALUE));