12 #include <sys/types.h>
18 #include "dictionary.h"
19 #include "appconfig.h"
21 #include "web_client.h"
27 // ----------------------------------------------------------------------------
30 // 1. the default tracking cookie expires in 1 year, but the persons are not
31 // removed from the db - this means the database only grows - ideally the
32 // database should be cleaned in registry_save() for both on-disk and
36 // i. Find all the PERSONs that have expired cookie
37 // ii. For each of their PERSON_URLs:
38 // - decrement the linked MACHINE links
39 // - if the linked MACHINE has no other links, remove the linked MACHINE too
40 // - remove the PERSON_URL
42 // 2. add protection to prevent abusing the registry by flooding it with
43 // requests to fill the memory and crash it.
45 // Possible protections:
46 // - limit the number of URLs per person
47 // - limit the number of URLs per machine
48 // - limit the number of persons
49 // - limit the number of machines
50 // - [DONE] limit the size of URLs
51 // - [DONE] limit the size of PERSON_URL names
52 // - limit the number of requests that add data to the registry,
53 // per client IP per hour
57 #define REGISTRY_URL_FLAGS_DEFAULT 0x00
58 #define REGISTRY_URL_FLAGS_EXPIRED 0x01
60 #define DICTIONARY_FLAGS DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE | DICTIONARY_FLAG_NAME_LINK_DONT_CLONE
62 // ----------------------------------------------------------------------------
68 char machine_guid[36 + 1];
70 // entries counters / statistics
71 unsigned long long persons_count;
72 unsigned long long machines_count;
73 unsigned long long usages_count;
74 unsigned long long urls_count;
75 unsigned long long persons_urls_count;
76 unsigned long long machines_urls_count;
77 unsigned long long log_count;
79 // memory counters / statistics
80 unsigned long long persons_memory;
81 unsigned long long machines_memory;
82 unsigned long long urls_memory;
83 unsigned long long persons_urls_memory;
84 unsigned long long machines_urls_memory;
87 unsigned long long save_registry_every_entries;
88 char *registry_domain;
90 char *registry_to_announce;
91 time_t persons_expiration; // seconds to expire idle persons
93 size_t max_url_length;
94 size_t max_name_length;
100 char *machine_guid_filename;
106 DICTIONARY *persons; // dictionary of PERSON *, with key the PERSON.guid
107 DICTIONARY *machines; // dictionary of MACHINE *, with key the MACHINE.guid
108 DICTIONARY *urls; // dictionary of URL *, with key the URL.url
110 // concurrency locking
111 // we keep different locks for different things
112 // so that many tasks can be completed in parallel
113 pthread_mutex_t persons_lock;
114 pthread_mutex_t machines_lock;
115 pthread_mutex_t urls_lock;
116 pthread_mutex_t person_urls_lock;
117 pthread_mutex_t machine_urls_lock;
118 pthread_mutex_t log_lock;
122 // ----------------------------------------------------------------------------
124 // Save memory by de-duplicating URLs
125 // so instead of storing URLs all over the place
126 // we store them here and we keep pointers elsewhere
129 uint32_t links; // the number of links to this URL - when none is left, we free it
130 uint16_t len; // the length of the URL in bytes
131 char url[1]; // the URL - dynamically allocated to more size
133 typedef struct url URL;
136 // ----------------------------------------------------------------------------
137 // MACHINE structures
139 // For each MACHINE-URL pair we keep this
141 URL *url; // de-duplicated URL
142 // DICTIONARY *persons; // dictionary of PERSON *
145 uint32_t first_t; // the first time we saw this
146 uint32_t last_t; // the last time we saw this
147 uint32_t usages; // how many times this has been accessed
149 typedef struct machine_url MACHINE_URL;
153 char guid[36 + 1]; // the GUID
155 uint32_t links; // the number of PERSON_URLs linked to this machine
157 DICTIONARY *urls; // MACHINE_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 typedef struct machine MACHINE;
166 // ----------------------------------------------------------------------------
169 // for each PERSON-URL pair we keep this
171 URL *url; // de-duplicated URL
172 MACHINE *machine; // link the MACHINE of this URL
175 uint32_t first_t; // the first time we saw this
176 uint32_t last_t; // the last time we saw this
177 uint32_t usages; // how many times this has been accessed
179 char name[1]; // the name of the URL, as known by the user
180 // dynamically allocated to fit properly
182 typedef struct person_url PERSON_URL;
186 char guid[36 + 1]; // the person GUID
188 DICTIONARY *urls; // dictionary of PERSON_URL *
190 uint32_t first_t; // the first time we saw this
191 uint32_t last_t; // the last time we saw this
192 uint32_t usages; // how many times this has been accessed
194 typedef struct person PERSON;
197 // ----------------------------------------------------------------------------
198 // REGISTRY concurrency locking
200 static inline void registry_persons_lock(void) {
201 pthread_mutex_lock(®istry.persons_lock);
204 static inline void registry_persons_unlock(void) {
205 pthread_mutex_unlock(®istry.persons_lock);
208 static inline void registry_machines_lock(void) {
209 pthread_mutex_lock(®istry.machines_lock);
212 static inline void registry_machines_unlock(void) {
213 pthread_mutex_unlock(®istry.machines_lock);
216 static inline void registry_urls_lock(void) {
217 pthread_mutex_lock(®istry.urls_lock);
220 static inline void registry_urls_unlock(void) {
221 pthread_mutex_unlock(®istry.urls_lock);
224 // ideally, we should not lock the whole registry for
225 // updating a person's urls.
226 // however, to save the memory required for keeping a
227 // mutex (40 bytes) per person, we do...
228 static inline void registry_person_urls_lock(PERSON *p) {
230 pthread_mutex_lock(®istry.person_urls_lock);
233 static inline void registry_person_urls_unlock(PERSON *p) {
235 pthread_mutex_unlock(®istry.person_urls_lock);
238 // ideally, we should not lock the whole registry for
239 // updating a machine's urls.
240 // however, to save the memory required for keeping a
241 // mutex (40 bytes) per machine, we do...
242 static inline void registry_machine_urls_lock(MACHINE *m) {
244 pthread_mutex_lock(®istry.machine_urls_lock);
247 static inline void registry_machine_urls_unlock(MACHINE *m) {
249 pthread_mutex_unlock(®istry.machine_urls_lock);
252 static inline void registry_log_lock(void) {
253 pthread_mutex_lock(®istry.log_lock);
256 static inline void registry_log_unlock(void) {
257 pthread_mutex_unlock(®istry.log_lock);
261 // ----------------------------------------------------------------------------
264 // parse a GUID and re-generated to be always lower case
265 // this is used as a protection against the variations of GUIDs
266 static inline int registry_regenerate_guid(const char *guid, char *result) {
268 if(unlikely(uuid_parse(guid, uuid) == -1)) {
269 info("Registry: GUID '%s' is not a valid GUID.", guid);
273 uuid_unparse_lower(uuid, result);
275 #ifdef NETDATA_INTERNAL_CHECKS
276 if(strcmp(guid, result))
277 info("Registry: source GUID '%s' and re-generated GUID '%s' differ!", guid, result);
278 #endif /* NETDATA_INTERNAL_CHECKS */
284 // make sure the names of the machines / URLs do not contain any tabs
285 // (which are used as our separator in the database files)
286 // and are properly trimmed (before and after)
287 static inline char *registry_fix_machine_name(char *name, size_t *len) {
288 char *s = name?name:"";
290 // skip leading spaces
291 while(*s && isspace(*s)) s++;
293 // make sure all spaces are a SPACE
296 if(unlikely(isspace(*t)))
302 // remove trailing spaces
317 static inline char *registry_fix_url(char *url, size_t *len) {
318 return registry_fix_machine_name(url, len);
322 // ----------------------------------------------------------------------------
323 // forward definition of functions
325 extern PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when);
326 extern PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when);
329 // ----------------------------------------------------------------------------
332 static inline URL *registry_url_allocate_nolock(const char *url, size_t urllen) {
333 // protection from too big URLs
334 if(urllen > registry.max_url_length)
335 urllen = registry.max_url_length;
337 debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): allocating %zu bytes", url, sizeof(URL) + urllen);
338 URL *u = malloc(sizeof(URL) + urllen);
339 if(!u) fatal("Cannot allocate %zu bytes for URL '%s'", sizeof(URL) + urllen);
341 // a simple strcpy() should do the job
342 // but I prefer to be safe, since the caller specified urllen
343 strncpy(u->url, url, urllen);
344 u->url[urllen] = '\0';
349 registry.urls_memory += sizeof(URL) + urllen;
351 debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): indexing it", url);
352 dictionary_set(registry.urls, u->url, u, sizeof(URL));
357 static inline URL *registry_url_get(const char *url, size_t urllen) {
358 debug(D_REGISTRY, "Registry: registry_url_get('%s')", url);
360 registry_urls_lock();
362 URL *u = dictionary_get(registry.urls, url);
364 u = registry_url_allocate_nolock(url, urllen);
365 registry.urls_count++;
368 registry_urls_unlock();
373 static inline void registry_url_link_nolock(URL *u) {
375 debug(D_REGISTRY, "Registry: registry_url_link_nolock('%s'): URL has now %u links", u->url, u->links);
378 static inline void registry_url_unlink_nolock(URL *u) {
381 debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): No more links for this URL", u->url);
382 dictionary_del(registry.urls, u->url);
386 debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): URL has %u links left", u->url, u->links);
390 // ----------------------------------------------------------------------------
393 static inline MACHINE *registry_machine_find(const char *machine_guid) {
394 debug(D_REGISTRY, "Registry: registry_machine_find('%s')", machine_guid);
395 return dictionary_get(registry.machines, machine_guid);
398 static inline MACHINE_URL *registry_machine_url_allocate(MACHINE *m, URL *u, time_t when) {
399 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): allocating %zu bytes", m->guid, u->url, sizeof(MACHINE_URL));
401 MACHINE_URL *mu = malloc(sizeof(MACHINE_URL));
402 if(!mu) fatal("registry_machine_link_to_url('%s', '%s'): cannot allocate %zu bytes.", m->guid, u->url, sizeof(MACHINE_URL));
404 // mu->persons = dictionary_create(DICTIONARY_FLAGS);
405 // dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
407 mu->first_t = mu->last_t = when;
410 mu->flags = REGISTRY_URL_FLAGS_DEFAULT;
412 registry.machines_urls_memory += sizeof(MACHINE_URL);
414 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): indexing URL in machine", m->guid, u->url);
415 dictionary_set(m->urls, u->url, mu, sizeof(MACHINE_URL));
416 registry_url_link_nolock(u);
421 static inline MACHINE *registry_machine_allocate(const char *machine_guid, time_t when) {
422 debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating new machine, sizeof(MACHINE)=%zu", machine_guid, sizeof(MACHINE));
424 MACHINE *m = malloc(sizeof(MACHINE));
425 if(!m) fatal("Registry: cannot allocate memory for new machine '%s'", machine_guid);
427 strncpy(m->guid, machine_guid, 36);
430 debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating dictionary of urls", machine_guid);
431 m->urls = dictionary_create(DICTIONARY_FLAGS);
433 m->first_t = m->last_t = when;
436 registry.machines_memory += sizeof(MACHINE);
438 registry.machines_count++;
439 dictionary_set(registry.machines, m->guid, m, sizeof(MACHINE));
444 // 1. validate machine GUID
445 // 2. if it is valid, find it or create it and return it
446 // 3. if it is not valid, return NULL
447 static inline MACHINE *registry_machine_get(const char *machine_guid, time_t when) {
450 registry_machines_lock();
452 if(likely(machine_guid && *machine_guid)) {
453 // validate it is a GUID
455 if(unlikely(registry_regenerate_guid(machine_guid, buf) == -1))
456 info("Registry: machine guid '%s' is not a valid guid. Ignoring it.", machine_guid);
459 m = registry_machine_find(machine_guid);
460 if(!m) m = registry_machine_allocate(machine_guid, when);
464 registry_machines_unlock();
470 // ----------------------------------------------------------------------------
473 static inline PERSON *registry_person_find(const char *person_guid) {
474 debug(D_REGISTRY, "Registry: registry_person_find('%s')", person_guid);
475 return dictionary_get(registry.persons, person_guid);
478 static inline PERSON_URL *registry_person_url_allocate(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) {
479 // protection from too big names
480 if(namelen > registry.max_name_length)
481 namelen = registry.max_name_length;
483 debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url,
484 sizeof(PERSON_URL) + namelen);
486 PERSON_URL *pu = malloc(sizeof(PERSON_URL) + namelen);
487 if(!pu) fatal("registry_person_url_allocate('%s', '%s', '%s'): cannot allocate %zu bytes.", p->guid, m->guid, u->url, sizeof(PERSON_URL) + namelen);
489 // a simple strcpy() should do the job
490 // but I prefer to be safe, since the caller specified urllen
491 strncpy(pu->name, name, namelen);
492 pu->name[namelen] = '\0';
495 pu->first_t = pu->last_t = when;
498 pu->flags = REGISTRY_URL_FLAGS_DEFAULT;
501 registry.persons_urls_memory += sizeof(PERSON_URL) + namelen;
503 debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): indexing URL in person", p->guid, m->guid, u->url);
504 dictionary_set(p->urls, u->url, pu, sizeof(PERSON_URL));
505 registry_url_link_nolock(u);
510 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) {
511 // this function is needed to change the name of a PERSON_URL
513 debug(D_REGISTRY, "registry_person_url_reallocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url,
514 sizeof(PERSON_URL) + namelen);
516 PERSON_URL *tpu = registry_person_url_allocate(p, m, u, name, namelen, when);
517 tpu->first_t = pu->first_t;
518 tpu->last_t = pu->last_t;
519 tpu->usages = pu->usages;
521 // ok, these are a hack - since the registry_person_url_allocate() is
522 // adding these, we have to subtract them
523 tpu->machine->links--;
524 registry.persons_urls_memory -= sizeof(PERSON_URL) + strlen(pu->name);
525 registry_url_unlink_nolock(u);
532 static inline PERSON *registry_person_allocate(const char *person_guid, time_t when) {
535 debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): allocating new person, sizeof(PERSON)=%zu", (person_guid)?person_guid:"", sizeof(PERSON));
537 p = malloc(sizeof(PERSON));
538 if(!p) fatal("Registry: cannot allocate memory for new person.");
544 uuid_unparse_lower(uuid, p->guid);
546 debug(D_REGISTRY, "Registry: Checking if the generated person guid '%s' is unique", p->guid);
547 if (!dictionary_get(registry.persons, p->guid)) {
548 debug(D_REGISTRY, "Registry: generated person guid '%s' is unique", p->guid);
552 info("Registry: generated person guid '%s' found in the registry. Retrying...", p->guid);
556 strncpy(p->guid, person_guid, 36);
560 debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): creating dictionary of urls", p->guid);
561 p->urls = dictionary_create(DICTIONARY_FLAGS);
563 p->first_t = p->last_t = when;
566 registry.persons_memory += sizeof(PERSON);
568 registry.persons_count++;
569 dictionary_set(registry.persons, p->guid, p, sizeof(PERSON));
575 // 1. validate person GUID
576 // 2. if it is valid, find it
577 // 3. if it is not valid, create a new one
579 static inline PERSON *registry_person_get(const char *person_guid, time_t when) {
582 registry_persons_lock();
584 if(person_guid && *person_guid) {
586 // validate it is a GUID
587 if(unlikely(registry_regenerate_guid(person_guid, buf) == -1))
588 info("Registry: person guid '%s' is not a valid guid. Ignoring it.", person_guid);
591 p = registry_person_find(person_guid);
592 if(!p) person_guid = NULL;
596 if(!p) p = registry_person_allocate(NULL, when);
598 registry_persons_unlock();
603 // ----------------------------------------------------------------------------
604 // LINKING OF OBJECTS
606 static inline PERSON_URL *registry_person_link_to_url(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) {
607 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): searching for URL in person", p->guid, m->guid, u->url);
609 registry_person_urls_lock(p);
611 PERSON_URL *pu = dictionary_get(p->urls, u->url);
613 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
614 pu = registry_person_url_allocate(p, m, u, name, namelen, when);
615 registry.persons_urls_count++;
618 debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
621 if(pu->machine != m) {
622 MACHINE_URL *mu = dictionary_get(pu->machine->urls, u->url);
624 info("registry_person_link_to_url('%s', '%s', '%s'): URL switched machines (old was '%s') - expiring it from previous machine.",
625 p->guid, m->guid, u->url, pu->machine->guid);
626 mu->flags |= REGISTRY_URL_FLAGS_EXPIRED;
629 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.",
630 p->guid, m->guid, u->url, pu->machine->guid);
633 pu->machine->links--;
637 if(strcmp(pu->name, name)) {
638 // the name of the PERSON_URL has changed !
639 pu = registry_person_url_reallocate(p, m, u, name, namelen, when, pu);
646 if(pu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
647 info("registry_person_link_to_url('%s', '%s', '%s'): accessing an expired URL. Re-enabling URL.", p->guid, m->guid, u->url);
648 pu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
651 registry_person_urls_unlock(p);
656 static inline MACHINE_URL *registry_machine_link_to_url(PERSON *p, MACHINE *m, URL *u, time_t when) {
657 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): searching for URL in machine", p->guid, m->guid, u->url);
659 registry_machine_urls_lock(m);
661 MACHINE_URL *mu = dictionary_get(m->urls, u->url);
663 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url);
664 mu = registry_machine_url_allocate(m, u, when);
665 registry.machines_urls_count++;
668 debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url);
672 //debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): indexing person in machine", p->guid, m->guid, u->url);
673 //dictionary_set(mu->persons, p->guid, p, sizeof(PERSON));
678 if(mu->flags & REGISTRY_URL_FLAGS_EXPIRED) {
679 info("registry_machine_link_to_url('%s', '%s', '%s'): accessing an expired URL.", p->guid, m->guid, u->url);
680 mu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED;
683 registry_machine_urls_unlock(m);
688 // ----------------------------------------------------------------------------
689 // REGISTRY LOG LOAD/SAVE
691 static inline int registry_should_save_db(void) {
692 debug(D_REGISTRY, "log entries %llu, max %llu", registry.log_count, registry.save_registry_every_entries);
693 return registry.log_count > registry.save_registry_every_entries;
696 static inline void registry_log(const char action, PERSON *p, MACHINE *m, URL *u, char *name) {
697 if(likely(registry.log_fp)) {
698 // we lock only if the file is open
699 // to allow replaying the log at registry_log_load()
702 if(unlikely(fprintf(registry.log_fp, "%c\t%08x\t%s\t%s\t%s\t%s\n",
709 error("Registry: failed to save log. Registry data may be lost in case of abnormal restart.");
711 // we increase the counter even on failures
712 // so that the registry will be saved periodically
713 registry.log_count++;
715 registry_log_unlock();
717 // this must be outside the log_lock(), or a deadlock will happen.
718 // registry_save() checks the same inside the log_lock, so only
719 // one thread will save the db
720 if(unlikely(registry_should_save_db()))
725 static inline int registry_log_open_nolock(void) {
727 fclose(registry.log_fp);
729 registry.log_fp = fopen(registry.log_filename, "a");
731 if(registry.log_fp) {
732 if (setvbuf(registry.log_fp, NULL, _IOLBF, 0) != 0)
733 error("Cannot set line buffering on registry log file.");
737 error("Cannot open registry log file '%s'. Registry data will be lost in case of netdata or server crash.", registry.log_filename);
741 static inline void registry_log_close_nolock(void) {
742 if(registry.log_fp) {
743 fclose(registry.log_fp);
744 registry.log_fp = NULL;
748 static inline void registry_log_recreate_nolock(void) {
749 if(registry.log_fp != NULL) {
750 registry_log_close_nolock();
752 // open it with truncate
753 registry.log_fp = fopen(registry.log_filename, "w");
754 if(registry.log_fp) fclose(registry.log_fp);
755 else error("Cannot truncate registry log '%s'", registry.log_filename);
757 registry.log_fp = NULL;
759 registry_log_open_nolock();
763 int registry_log_load(void) {
764 char *s, buf[4096 + 1];
767 // closing the log is required here
768 // otherwise we will append to it the values we read
769 registry_log_close_nolock();
771 debug(D_REGISTRY, "Registry: loading active db from: %s", registry.log_filename);
772 FILE *fp = fopen(registry.log_filename, "r");
774 error("Registry: cannot open registry file: %s", registry.log_filename);
778 while ((s = fgets_trim_len(buf, 4096, fp, &len))) {
782 case 'A': // accesses
785 // verify it is valid
786 if (unlikely(len < 85 || s[1] != '\t' || s[10] != '\t' || s[47] != '\t' || s[84] != '\t')) {
787 error("Registry: log line %u is wrong (len = %zu).", line, len);
790 s[1] = s[10] = s[47] = s[84] = '\0';
793 time_t when = strtoul(&s[2], NULL, 16);
794 char *person_guid = &s[11];
795 char *machine_guid = &s[48];
798 // skip the name to find the url
800 while(*url && *url != '\t') url++;
802 error("Registry: log line %u does not have a url.", line);
807 // make sure the person exists
808 // without this, a new person guid will be created
809 PERSON *p = registry_person_find(person_guid);
810 if(!p) p = registry_person_allocate(person_guid, when);
813 registry_request_access(p->guid, machine_guid, url, name, when);
815 registry_request_delete(p->guid, machine_guid, url, name, when);
820 error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.log_filename, s);
826 // open the log again
827 registry_log_open_nolock();
833 // ----------------------------------------------------------------------------
836 PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
837 debug(D_REGISTRY, "registry_request_access('%s', '%s', '%s'): NEW REQUEST", (person_guid)?person_guid:"", machine_guid, url);
839 MACHINE *m = registry_machine_get(machine_guid, when);
842 // make sure the name is valid
844 name = registry_fix_machine_name(name, &namelen);
847 url = registry_fix_url(url, &urllen);
849 URL *u = registry_url_get(url, urllen);
850 PERSON *p = registry_person_get(person_guid, when);
852 registry_person_link_to_url(p, m, u, name, namelen, when);
853 registry_machine_link_to_url(p, m, u, when);
855 registry_log('A', p, m, u, name);
857 registry.usages_count++;
861 // verify the person, the machine and the URL exist in our DB
862 PERSON_URL *registry_verify_request(char *person_guid, char *machine_guid, char *url, PERSON **pp, MACHINE **mm) {
863 char pbuf[36 + 1], mbuf[36 + 1];
865 if(!person_guid || !*person_guid || !machine_guid || !*machine_guid || !url || !*url) {
866 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");
871 url = registry_fix_url(url, NULL);
873 // make sure the person GUID is valid
874 if(registry_regenerate_guid(person_guid, pbuf) == -1) {
875 info("Registry Request Verification: invalid person GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
880 // make sure the machine GUID is valid
881 if(registry_regenerate_guid(machine_guid, mbuf) == -1) {
882 info("Registry Request Verification: invalid machine GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
887 // make sure the machine exists
888 MACHINE *m = registry_machine_find(machine_guid);
890 info("Registry Request Verification: machine not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
895 // make sure the person exist
896 PERSON *p = registry_person_find(person_guid);
898 info("Registry Request Verification: person not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
903 PERSON_URL *pu = dictionary_get(p->urls, url);
905 info("Registry Request Verification: URL not found for person, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url);
911 PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) {
916 PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m);
917 if(!pu || !p || !m) return NULL;
920 delete_url = registry_fix_url(delete_url, NULL);
922 // make sure the user is not deleting the url it uses
923 if(!strcmp(delete_url, pu->url->url)) {
924 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);
928 registry_person_urls_lock(p);
930 PERSON_URL *dpu = dictionary_get(p->urls, delete_url);
932 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);
933 registry_person_urls_unlock(p);
937 registry_log('D', p, m, pu->url, dpu->url->url);
939 dictionary_del(p->urls, dpu->url->url);
940 registry_url_unlink_nolock(dpu->url);
943 registry_person_urls_unlock(p);
948 // a structure to pass to the dictionary_get_all() callback handler
949 struct machine_request_callback_data {
950 MACHINE *find_this_machine;
954 // the callback function
955 // this will be run for every PERSON_URL of this PERSON
956 int machine_request_callback(void *entry, void *data) {
957 PERSON_URL *mypu = (PERSON_URL *)entry;
958 struct machine_request_callback_data *myrdata = (struct machine_request_callback_data *)data;
960 if(mypu->machine == myrdata->find_this_machine) {
961 myrdata->result = mypu;
962 return -1; // this will also stop the walk through
965 return 0; // continue
968 MACHINE *registry_request_machine(char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) {
975 PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m);
976 if(!pu || !p || !m) return NULL;
978 // make sure the machine GUID is valid
979 if(registry_regenerate_guid(request_machine, mbuf) == -1) {
980 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);
983 request_machine = mbuf;
985 // make sure the machine exists
986 m = registry_machine_find(request_machine);
988 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);
992 // Verify the user has in the past accessed this machine
993 // We will walk through the PERSON_URLs to find the machine
994 // linking to our machine
996 // a structure to pass to the dictionary_get_all() callback handler
997 struct machine_request_callback_data rdata = { m, NULL };
999 // request a walk through on the dictionary
1000 // no need for locking here, the underlying dictionary has its own
1001 dictionary_get_all(p->urls, machine_request_callback, &rdata);
1010 // ----------------------------------------------------------------------------
1011 // REGISTRY JSON generation
1013 #define REGISTRY_STATUS_OK "ok"
1014 #define REGISTRY_STATUS_FAILED "failed"
1015 #define REGISTRY_STATUS_DISABLED "disabled"
1017 static inline void registry_set_person_cookie(struct web_client *w, PERSON *p) {
1019 time_t et = time(NULL) + registry.persons_expiration;
1020 struct tm etmbuf, *etm = gmtime_r(&et, &etmbuf);
1021 strftime(edate, sizeof(edate), "%a, %d %b %Y %H:%M:%S %Z", etm);
1023 if(registry.registry_domain && registry.registry_domain[0])
1024 snprintf(w->cookie, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Domain=%s; Expires=%s", p->guid, registry.registry_domain, edate);
1026 snprintf(w->cookie, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Expires=%s", p->guid, edate);
1028 w->cookie[COOKIE_MAX] = '\0';
1031 static inline void registry_json_header(struct web_client *w, const char *action, const char *status) {
1032 w->response.data->contenttype = CT_APPLICATION_JSON;
1033 buffer_flush(w->response.data);
1034 buffer_sprintf(w->response.data, "{\n\t\"action\": \"%s\",\n\t\"status\": \"%s\",\n\t\"hostname\": \"%s\",\n\t\"machine_guid\": \"%s\"",
1035 action, status, registry.hostname, registry.machine_guid);
1038 static inline void registry_json_footer(struct web_client *w) {
1039 buffer_strcat(w->response.data, "\n}\n");
1042 int registry_request_hello_json(struct web_client *w) {
1043 registry_json_header(w, "hello", REGISTRY_STATUS_OK);
1045 buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
1046 registry.registry_to_announce);
1048 registry_json_footer(w);
1052 static inline int registry_json_disabled(struct web_client *w, const char *action) {
1053 registry_json_header(w, action, REGISTRY_STATUS_DISABLED);
1055 buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
1056 registry.registry_to_announce);
1058 registry_json_footer(w);
1062 // structure used be the callbacks below
1063 struct registry_json_walk_person_urls_callback {
1066 struct web_client *w;
1070 // callback for rendering PERSON_URLs
1071 static inline int registry_json_person_url_callback(void *entry, void *data) {
1072 PERSON_URL *pu = (PERSON_URL *)entry;
1073 struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data;
1074 struct web_client *w = c->w;
1076 if(unlikely(c->count++))
1077 buffer_strcat(w->response.data, ",");
1079 buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u, \"%s\" ]",
1080 pu->machine->guid, pu->url->url, pu->last_t, pu->usages, pu->name);
1085 // callback for rendering MACHINE_URLs
1086 static inline int registry_json_machine_url_callback(void *entry, void *data) {
1087 MACHINE_URL *mu = (MACHINE_URL *)entry;
1088 struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data;
1089 struct web_client *w = c->w;
1092 if(unlikely(c->count++))
1093 buffer_strcat(w->response.data, ",");
1095 buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u ]",
1096 m->guid, mu->url->url, mu->last_t, mu->usages);
1102 // the main method for registering an access
1103 int registry_request_access_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
1104 if(!registry.enabled)
1105 return registry_json_disabled(w, "access");
1107 PERSON *p = registry_request_access(person_guid, machine_guid, url, name, when);
1109 registry_json_header(w, "access", REGISTRY_STATUS_FAILED);
1110 registry_json_footer(w);
1115 registry_set_person_cookie(w, p);
1117 // generate the response
1118 registry_json_header(w, "access", REGISTRY_STATUS_OK);
1120 buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\",\n\t\"urls\": [", p->guid);
1121 struct registry_json_walk_person_urls_callback c = { p, NULL, w, 0 };
1122 dictionary_get_all(p->urls, registry_json_person_url_callback, &c);
1123 buffer_strcat(w->response.data, "\n\t]\n");
1125 registry_json_footer(w);
1129 // the main method for deleting a URL from a person
1130 int registry_request_delete_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) {
1131 if(!registry.enabled)
1132 return registry_json_disabled(w, "delete");
1134 PERSON *p = registry_request_delete(person_guid, machine_guid, url, delete_url, when);
1136 registry_json_header(w, "delete", REGISTRY_STATUS_FAILED);
1137 registry_json_footer(w);
1141 // generate the response
1142 registry_json_header(w, "delete", REGISTRY_STATUS_OK);
1143 registry_json_footer(w);
1147 // the main method for searching the URLs of a netdata
1148 int registry_request_search_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) {
1149 if(!registry.enabled)
1150 return registry_json_disabled(w, "search");
1152 MACHINE *m = registry_request_machine(person_guid, machine_guid, url, request_machine, when);
1154 registry_json_header(w, "search", REGISTRY_STATUS_FAILED);
1155 registry_json_footer(w);
1159 registry_json_header(w, "search", REGISTRY_STATUS_OK);
1161 buffer_strcat(w->response.data, ",\n\t\"urls\": [");
1162 struct registry_json_walk_person_urls_callback c = { NULL, m, w, 0 };
1163 dictionary_get_all(m->urls, registry_json_machine_url_callback, &c);
1164 buffer_strcat(w->response.data, "\n\t]\n");
1166 registry_json_footer(w);
1171 int registry_person_url_callback_verify_machine_exists(void *entry, void *machine) {
1172 PERSON_URL *pu = (PERSON_URL *)entry;
1173 MACHINE *m = (MACHINE *)machine;
1175 if(pu->machine == m)
1181 // the main method for switching user identity
1182 int registry_request_switch_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *new_person_guid, time_t when) {
1186 if(!registry.enabled)
1187 return registry_json_disabled(w, "switch");
1189 PERSON *op = registry_person_find(person_guid);
1191 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1192 registry_json_footer(w);
1196 PERSON *np = registry_person_find(new_person_guid);
1198 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1199 registry_json_footer(w);
1203 MACHINE *m = registry_machine_find(machine_guid);
1205 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1206 registry_json_footer(w);
1210 // verify the old person has access to this machine
1211 int count = dictionary_get_all(op->urls, registry_person_url_callback_verify_machine_exists, m);
1213 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1214 registry_json_footer(w);
1218 // verify the new person has access to this machine
1219 count = dictionary_get_all(np->urls, registry_person_url_callback_verify_machine_exists, m);
1221 registry_json_header(w, "switch", REGISTRY_STATUS_FAILED);
1222 registry_json_footer(w);
1226 // set the cookie of the new person
1227 // the user just switched identity
1228 registry_set_person_cookie(w, np);
1230 // generate the response
1231 registry_json_header(w, "switch", REGISTRY_STATUS_OK);
1232 buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\"", np->guid);
1233 registry_json_footer(w);
1238 // ----------------------------------------------------------------------------
1239 // REGISTRY THIS MACHINE UNIQUE ID
1241 char *registry_get_this_machine_guid(void) {
1242 if(likely(registry.machine_guid[0]))
1243 return registry.machine_guid;
1245 // read it from disk
1246 int fd = open(registry.machine_guid_filename, O_RDONLY);
1249 if(read(fd, buf, 36) != 36)
1250 error("Failed to read machine GUID from '%s'", registry.machine_guid_filename);
1253 if(registry_regenerate_guid(buf, registry.machine_guid) == -1) {
1254 error("Failed to validate machine GUID '%s' from '%s'. Ignoring it - this might mean this netdata will appear as duplicate in the registry.",
1255 buf, registry.machine_guid_filename);
1257 registry.machine_guid[0] = '\0';
1263 // generate a new one?
1264 if(!registry.machine_guid[0]) {
1265 int count = 10, ret = 0;
1268 // for some reason it reports unsafe generation the first time
1269 while(count-- && (ret = uuid_generate_time_safe(uuid)) == -1) ;
1270 uuid_unparse_lower(uuid, registry.machine_guid);
1271 registry.machine_guid[36] = '\0';
1274 info("Warning: generated machine GUID '%s' was not generated using a safe method.", registry.machine_guid);
1277 fd = open(registry.machine_guid_filename, O_WRONLY|O_CREAT|O_TRUNC, 444);
1279 fatal("Cannot create unique machine id file '%s'. Please fix this.", registry.machine_guid_filename);
1281 if(write(fd, registry.machine_guid, 36) != 36)
1282 fatal("Cannot write the unique machine id file '%s'. Please fix this.", registry.machine_guid_filename);
1287 return registry.machine_guid;
1291 // ----------------------------------------------------------------------------
1292 // REGISTRY LOAD/SAVE
1294 int registry_machine_save_url(void *entry, void *file) {
1295 MACHINE_URL *mu = entry;
1298 debug(D_REGISTRY, "Registry: registry_machine_save_url('%s')", mu->url->url);
1300 int ret = fprintf(fp, "V\t%08x\t%08x\t%08x\t%02x\t%s\n",
1308 // error handling is done at registry_save()
1313 int registry_machine_save(void *entry, void *file) {
1317 debug(D_REGISTRY, "Registry: registry_machine_save('%s')", m->guid);
1319 int ret = fprintf(fp, "M\t%08x\t%08x\t%08x\t%s\n",
1327 int ret2 = dictionary_get_all(m->urls, registry_machine_save_url, fp);
1328 if(ret2 < 0) return ret2;
1332 // error handling is done at registry_save()
1337 static inline int registry_person_save_url(void *entry, void *file) {
1338 PERSON_URL *pu = entry;
1341 debug(D_REGISTRY, "Registry: registry_person_save_url('%s')", pu->url->url);
1343 int ret = fprintf(fp, "U\t%08x\t%08x\t%08x\t%02x\t%s\t%s\t%s\n",
1353 // error handling is done at registry_save()
1358 static inline int registry_person_save(void *entry, void *file) {
1362 debug(D_REGISTRY, "Registry: registry_person_save('%s')", p->guid);
1364 int ret = fprintf(fp, "P\t%08x\t%08x\t%08x\t%s\n",
1372 int ret2 = dictionary_get_all(p->urls, registry_person_save_url, fp);
1373 if (ret2 < 0) return ret2;
1377 // error handling is done at registry_save()
1382 int registry_save(void) {
1383 if(!registry.enabled) return -1;
1385 // make sure the log is not updated
1386 registry_log_lock();
1388 if(unlikely(!registry_should_save_db())) {
1389 registry_log_unlock();
1393 char tmp_filename[FILENAME_MAX + 1];
1394 char old_filename[FILENAME_MAX + 1];
1396 snprintf(old_filename, FILENAME_MAX, "%s.old", registry.db_filename);
1397 snprintf(tmp_filename, FILENAME_MAX, "%s.tmp", registry.db_filename);
1399 debug(D_REGISTRY, "Registry: Creating file '%s'", tmp_filename);
1400 FILE *fp = fopen(tmp_filename, "w");
1402 error("Registry: Cannot create file: %s", tmp_filename);
1403 registry_log_unlock();
1407 // dictionary_get_all() has its own locking, so this is safe to do
1409 debug(D_REGISTRY, "Saving all machines");
1410 int bytes1 = dictionary_get_all(registry.machines, registry_machine_save, fp);
1412 error("Registry: Cannot save registry machines - return value %d", bytes1);
1414 registry_log_unlock();
1417 debug(D_REGISTRY, "Registry: saving machines took %d bytes", bytes1);
1419 debug(D_REGISTRY, "Saving all persons");
1420 int bytes2 = dictionary_get_all(registry.persons, registry_person_save, fp);
1422 error("Registry: Cannot save registry persons - return value %d", bytes2);
1424 registry_log_unlock();
1427 debug(D_REGISTRY, "Registry: saving persons took %d bytes", bytes2);
1430 fprintf(fp, "T\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\n",
1431 registry.persons_count,
1432 registry.machines_count,
1433 registry.usages_count + 1, // this is required - it is lost on db rotation
1434 registry.urls_count,
1435 registry.persons_urls_count,
1436 registry.machines_urls_count
1443 // remove the .old db
1444 debug(D_REGISTRY, "Registry: Removing old db '%s'", old_filename);
1445 if(unlink(old_filename) == -1 && errno != ENOENT)
1446 error("Registry: cannot remove old registry file '%s'", old_filename);
1448 // rename the db to .old
1449 debug(D_REGISTRY, "Registry: Link current db '%s' to .old: '%s'", registry.db_filename, old_filename);
1450 if(link(registry.db_filename, old_filename) == -1 && errno != ENOENT)
1451 error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename, registry.db_filename);
1454 // remove the database (it is saved in .old)
1455 debug(D_REGISTRY, "Registry: removing db '%s'", registry.db_filename);
1456 if (unlink(registry.db_filename) == -1 && errno != ENOENT)
1457 error("Registry: cannot remove old registry file '%s'", registry.db_filename);
1459 // move the .tmp to make it active
1460 debug(D_REGISTRY, "Registry: linking tmp db '%s' to active db '%s'", tmp_filename, registry.db_filename);
1461 if (link(tmp_filename, registry.db_filename) == -1) {
1462 error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename,
1463 registry.db_filename);
1465 // move the .old back
1466 debug(D_REGISTRY, "Registry: linking old db '%s' to active db '%s'", old_filename, registry.db_filename);
1467 if(link(old_filename, registry.db_filename) == -1)
1468 error("Registry: cannot move file '%s' to '%s'. Recovering the old registry DB failed!", old_filename, registry.db_filename);
1471 debug(D_REGISTRY, "Registry: removing tmp db '%s'", tmp_filename);
1472 if(unlink(tmp_filename) == -1)
1473 error("Registry: cannot remove tmp registry file '%s'", tmp_filename);
1475 // it has been moved successfully
1476 // discard the current registry log
1477 registry_log_recreate_nolock();
1479 registry.log_count = 0;
1483 // continue operations
1484 registry_log_unlock();
1489 static inline size_t registry_load(void) {
1490 char *s, buf[4096 + 1];
1496 debug(D_REGISTRY, "Registry: loading active db from: '%s'", registry.db_filename);
1497 FILE *fp = fopen(registry.db_filename, "r");
1499 error("Registry: cannot open registry file: '%s'", registry.db_filename);
1505 while((s = fgets_trim_len(buf, 4096, fp, &len))) {
1508 debug(D_REGISTRY, "Registry: read line %zu to length %zu: %s", line, len, s);
1511 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')) {
1512 error("Registry totals line %u is wrong (len = %zu).", line, len);
1515 registry.persons_count = strtoull(&s[2], NULL, 16);
1516 registry.machines_count = strtoull(&s[19], NULL, 16);
1517 registry.usages_count = strtoull(&s[36], NULL, 16);
1518 registry.urls_count = strtoull(&s[53], NULL, 16);
1519 registry.persons_urls_count = strtoull(&s[70], NULL, 16);
1520 registry.machines_urls_count = strtoull(&s[87], NULL, 16);
1525 // verify it is valid
1526 if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) {
1527 error("Registry person line %u is wrong (len = %zu).", line, len);
1531 s[1] = s[10] = s[19] = s[28] = '\0';
1532 p = registry_person_allocate(&s[29], strtoul(&s[2], NULL, 16));
1533 p->last_t = strtoul(&s[11], NULL, 16);
1534 p->usages = strtoul(&s[20], NULL, 16);
1535 debug(D_REGISTRY, "Registry loaded person '%s', first: %u, last: %u, usages: %u", p->guid, p->first_t, p->last_t, p->usages);
1538 case 'M': // machine
1540 // verify it is valid
1541 if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) {
1542 error("Registry person line %u is wrong (len = %zu).", line, len);
1546 s[1] = s[10] = s[19] = s[28] = '\0';
1547 m = registry_machine_allocate(&s[29], strtoul(&s[2], NULL, 16));
1548 m->last_t = strtoul(&s[11], NULL, 16);
1549 m->usages = strtoul(&s[20], NULL, 16);
1550 debug(D_REGISTRY, "Registry loaded machine '%s', first: %u, last: %u, usages: %u", m->guid, m->first_t, m->last_t, m->usages);
1553 case 'U': // person URL
1555 error("Registry: ignoring line %zu, no person loaded: %s", line, s);
1559 // verify it is valid
1560 if(len < 69 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t' || s[68] != '\t') {
1561 error("Registry person URL line %u is wrong (len = %zu).", line, len);
1565 s[1] = s[10] = s[19] = s[28] = s[31] = s[68] = '\0';
1567 // skip the name to find the url
1569 while(*url && *url != '\t') url++;
1571 error("Registry person URL line %u does not have a url.", line);
1576 u = registry_url_allocate_nolock(url, strlen(url));
1578 time_t first_t = strtoul(&s[2], NULL, 16);
1580 m = registry_machine_find(&s[32]);
1581 if(!m) m = registry_machine_allocate(&s[32], first_t);
1583 PERSON_URL *pu = registry_person_url_allocate(p, m, u, &s[69], strlen(&s[69]), first_t);
1584 pu->last_t = strtoul(&s[11], NULL, 16);
1585 pu->usages = strtoul(&s[20], NULL, 16);
1586 pu->flags = strtoul(&s[29], NULL, 16);
1587 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);
1590 case 'V': // machine URL
1592 error("Registry: ignoring line %zu, no machine loaded: %s", line, s);
1596 // verify it is valid
1597 if(len < 32 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t') {
1598 error("Registry person URL line %u is wrong (len = %zu).", line, len);
1602 s[1] = s[10] = s[19] = s[28] = s[31] = '\0';
1603 u = registry_url_allocate_nolock(&s[32], strlen(&s[32]));
1605 MACHINE_URL *mu = registry_machine_url_allocate(m, u, strtoul(&s[2], NULL, 16));
1606 mu->last_t = strtoul(&s[11], NULL, 16);
1607 mu->usages = strtoul(&s[20], NULL, 16);
1608 mu->flags = strtoul(&s[29], NULL, 16);
1609 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);
1613 error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.db_filename, s);
1622 // ----------------------------------------------------------------------------
1625 int registry_init(void) {
1626 char filename[FILENAME_MAX + 1];
1628 // registry enabled?
1629 registry.enabled = config_get_boolean("registry", "enabled", 0);
1632 registry.pathname = config_get("registry", "registry db directory", VARLIB_DIR "/registry");
1633 if(mkdir(registry.pathname, 0755) == -1 && errno != EEXIST) {
1634 error("Cannot create directory '%s'. Registry disabled.", registry.pathname);
1635 registry.enabled = 0;
1640 snprintf(filename, FILENAME_MAX, "%s/netdata.public.unique.id", registry.pathname);
1641 registry.machine_guid_filename = config_get("registry", "netdata unique id file", filename);
1642 registry_get_this_machine_guid();
1644 snprintf(filename, FILENAME_MAX, "%s/registry.db", registry.pathname);
1645 registry.db_filename = config_get("registry", "registry db file", filename);
1647 snprintf(filename, FILENAME_MAX, "%s/registry-log.db", registry.pathname);
1648 registry.log_filename = config_get("registry", "registry log file", filename);
1650 // configuration options
1651 registry.save_registry_every_entries = config_get_number("registry", "registry save db every new entries", 1000000);
1652 registry.persons_expiration = config_get_number("registry", "registry expire idle persons days", 365) * 86400;
1653 registry.registry_domain = config_get("registry", "registry domain", "");
1654 registry.registry_to_announce = config_get("registry", "registry to announce", "//registry.my-netdata.io");
1655 registry.hostname = config_get("registry", "registry hostname", config_get("global", "hostname", hostname));
1657 registry.max_url_length = config_get_number("registry", "max URL length", 1024);
1658 registry.max_name_length = config_get_number("registry", "max URL name length", 50);
1661 // initialize entries counters
1662 registry.persons_count = 0;
1663 registry.machines_count = 0;
1664 registry.usages_count = 0;
1665 registry.urls_count = 0;
1666 registry.persons_urls_count = 0;
1667 registry.machines_urls_count = 0;
1669 // initialize memory counters
1670 registry.persons_memory = 0;
1671 registry.machines_memory = 0;
1672 registry.urls_memory = 0;
1673 registry.persons_urls_memory = 0;
1674 registry.machines_urls_memory = 0;
1677 pthread_mutex_init(®istry.persons_lock, NULL);
1678 pthread_mutex_init(®istry.machines_lock, NULL);
1679 pthread_mutex_init(®istry.urls_lock, NULL);
1680 pthread_mutex_init(®istry.person_urls_lock, NULL);
1681 pthread_mutex_init(®istry.machine_urls_lock, NULL);
1683 // create dictionaries
1684 registry.persons = dictionary_create(DICTIONARY_FLAGS);
1685 registry.machines = dictionary_create(DICTIONARY_FLAGS);
1686 registry.urls = dictionary_create(DICTIONARY_FLAGS);
1688 // load the registry database
1689 if(registry.enabled) {
1690 registry_log_open_nolock();
1692 registry_log_load();
1698 void registry_free(void) {
1699 if(!registry.enabled) return;
1701 // we need to destroy the dictionaries ourselves
1702 // since the dictionaries use memory we allocated
1704 while(registry.persons->values_index.root) {
1705 PERSON *p = ((NAME_VALUE *)registry.persons->values_index.root)->value;
1707 // fprintf(stderr, "\nPERSON: '%s', first: %u, last: %u, usages: %u\n", p->guid, p->first_t, p->last_t, p->usages);
1709 while(p->urls->values_index.root) {
1710 PERSON_URL *pu = ((NAME_VALUE *)p->urls->values_index.root)->value;
1712 // 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);
1714 debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", pu->url->url, p->guid);
1715 dictionary_del(p->urls, pu->url->url);
1717 debug(D_REGISTRY, "Registry: unlinking url '%s' from person", pu->url->url);
1718 registry_url_unlink_nolock(pu->url);
1720 debug(D_REGISTRY, "Registry: freeing person url");
1724 debug(D_REGISTRY, "Registry: deleting person '%s' from persons registry", p->guid);
1725 dictionary_del(registry.persons, p->guid);
1727 debug(D_REGISTRY, "Registry: destroying URL dictionary of person '%s'", p->guid);
1728 dictionary_destroy(p->urls);
1730 debug(D_REGISTRY, "Registry: freeing person '%s'", p->guid);
1734 while(registry.machines->values_index.root) {
1735 MACHINE *m = ((NAME_VALUE *)registry.machines->values_index.root)->value;
1737 // fprintf(stderr, "\nMACHINE: '%s', first: %u, last: %u, usages: %u\n", m->guid, m->first_t, m->last_t, m->usages);
1739 while(m->urls->values_index.root) {
1740 MACHINE_URL *mu = ((NAME_VALUE *)m->urls->values_index.root)->value;
1742 // 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);
1744 //debug(D_REGISTRY, "Registry: destroying persons dictionary from url '%s'", mu->url->url);
1745 //dictionary_destroy(mu->persons);
1747 debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", mu->url->url, m->guid);
1748 dictionary_del(m->urls, mu->url->url);
1750 debug(D_REGISTRY, "Registry: unlinking url '%s' from machine", mu->url->url);
1751 registry_url_unlink_nolock(mu->url);
1753 debug(D_REGISTRY, "Registry: freeing machine url");
1757 debug(D_REGISTRY, "Registry: deleting machine '%s' from machines registry", m->guid);
1758 dictionary_del(registry.machines, m->guid);
1760 debug(D_REGISTRY, "Registry: destroying URL dictionary of machine '%s'", m->guid);
1761 dictionary_destroy(m->urls);
1763 debug(D_REGISTRY, "Registry: freeing machine '%s'", m->guid);
1767 // and free the memory of remaining dictionary structures
1769 debug(D_REGISTRY, "Registry: destroying persons dictionary");
1770 dictionary_destroy(registry.persons);
1772 debug(D_REGISTRY, "Registry: destroying machines dictionary");
1773 dictionary_destroy(registry.machines);
1775 debug(D_REGISTRY, "Registry: destroying urls dictionary");
1776 dictionary_destroy(registry.urls);
1779 // ----------------------------------------------------------------------------
1782 void registry_statistics(void) {
1783 if(!registry.enabled) return;
1785 static RRDSET *sts = NULL, *stc = NULL, *stm = NULL;
1787 if(!sts) sts = rrdset_find("netdata.registry_sessions");
1789 sts = rrdset_create("netdata", "registry_sessions", NULL, "registry", NULL, "NetData Registry Sessions", "session", 131000, rrd_update_every, RRDSET_TYPE_LINE);
1791 rrddim_add(sts, "sessions", NULL, 1, 1, RRDDIM_ABSOLUTE);
1793 else rrdset_next(sts);
1795 rrddim_set(sts, "sessions", registry.usages_count);
1798 // ------------------------------------------------------------------------
1800 if(!stc) stc = rrdset_find("netdata.registry_entries");
1802 stc = rrdset_create("netdata", "registry_entries", NULL, "registry", NULL, "NetData Registry Entries", "entries", 131100, rrd_update_every, RRDSET_TYPE_LINE);
1804 rrddim_add(stc, "persons", NULL, 1, 1, RRDDIM_ABSOLUTE);
1805 rrddim_add(stc, "machines", NULL, 1, 1, RRDDIM_ABSOLUTE);
1806 rrddim_add(stc, "urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1807 rrddim_add(stc, "persons_urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1808 rrddim_add(stc, "machines_urls", NULL, 1, 1, RRDDIM_ABSOLUTE);
1810 else rrdset_next(stc);
1812 rrddim_set(stc, "persons", registry.persons_count);
1813 rrddim_set(stc, "machines", registry.machines_count);
1814 rrddim_set(stc, "urls", registry.urls_count);
1815 rrddim_set(stc, "persons_urls", registry.persons_urls_count);
1816 rrddim_set(stc, "machines_urls", registry.machines_urls_count);
1819 // ------------------------------------------------------------------------
1821 if(!stm) stm = rrdset_find("netdata.registry_mem");
1823 stm = rrdset_create("netdata", "registry_mem", NULL, "registry", NULL, "NetData Registry Memory", "KB", 131300, rrd_update_every, RRDSET_TYPE_STACKED);
1825 rrddim_add(stm, "persons", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1826 rrddim_add(stm, "machines", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1827 rrddim_add(stm, "urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1828 rrddim_add(stm, "persons_urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1829 rrddim_add(stm, "machines_urls", NULL, 1, 1024, RRDDIM_ABSOLUTE);
1831 else rrdset_next(stm);
1833 rrddim_set(stm, "persons", registry.persons_memory + registry.persons_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1834 rrddim_set(stm, "machines", registry.machines_memory + registry.machines_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1835 rrddim_set(stm, "urls", registry.urls_memory + registry.urls_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY));
1836 rrddim_set(stm, "persons_urls", registry.persons_urls_memory + registry.persons_count * sizeof(DICTIONARY) + registry.persons_urls_count * sizeof(NAME_VALUE));
1837 rrddim_set(stm, "machines_urls", registry.machines_urls_memory + registry.machines_count * sizeof(DICTIONARY) + registry.machines_urls_count * sizeof(NAME_VALUE));
1842 #ifdef REGISTRY_STANDALONE_TESTS
1844 // ----------------------------------------------------------------------------
1847 int test1(int argc, char **argv) {
1849 void print_stats(uint32_t requests, unsigned long long start, unsigned long long end) {
1850 fprintf(stderr, " > SPEED: %u requests served in %0.2f seconds ( >>> %llu per second <<< )\n",
1851 requests, (end-start) / 1000000.0, (unsigned long long)requests * 1000000ULL / (end-start));
1853 fprintf(stderr, " > DB : persons %llu, machines %llu, unique URLs %llu, accesses %llu, URLs: for persons %llu, for machines %llu\n",
1854 registry.persons_count, registry.machines_count, registry.urls_count, registry.usages_count,
1855 registry.persons_urls_count, registry.machines_urls_count);
1861 uint32_t u, users = 1000000;
1862 uint32_t m, machines = 200000;
1863 uint32_t machines2 = machines * 2;
1865 char **users_guids = malloc(users * sizeof(char *));
1866 char **machines_guids = malloc(machines2 * sizeof(char *));
1867 char **machines_urls = malloc(machines2 * sizeof(char *));
1868 unsigned long long start;
1872 fprintf(stderr, "Generating %u machine guids\n", machines2);
1873 for(m = 0; m < machines2 ;m++) {
1875 machines_guids[m] = malloc(36+1);
1876 uuid_generate(uuid);
1877 uuid_unparse(uuid, machines_guids[m]);
1879 char buf[FILENAME_MAX + 1];
1880 snprintf(buf, FILENAME_MAX, "http://%u.netdata.rocks/", m+1);
1881 machines_urls[m] = strdup(buf);
1883 // fprintf(stderr, "\tmachine %u: '%s', url: '%s'\n", m + 1, machines_guids[m], machines_urls[m]);
1887 fprintf(stderr, "\nGenerating %u users accessing %u machines\n", users, machines);
1889 time_t now = time(NULL);
1890 for(u = 0; u < users ; u++) {
1891 if(++m == machines) m = 0;
1893 PERSON *p = registry_request_access(NULL, machines_guids[m], machines_urls[m], "test", now);
1894 users_guids[u] = p->guid;
1896 print_stats(u, start, timems());
1899 fprintf(stderr, "\nAll %u users accessing again the same %u servers\n", users, machines);
1902 for(u = 0; u < users ; u++) {
1903 if(++m == machines) m = 0;
1905 PERSON *p = registry_request_access(users_guids[u], machines_guids[m], machines_urls[m], "test", now);
1907 if(p->guid != users_guids[u])
1908 fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[u], p->guid);
1910 print_stats(u, start, timems());
1913 fprintf(stderr, "\nAll %u users accessing a new server, out of the %u servers\n", users, machines);
1916 for(u = 0; u < users ; u++) {
1917 if(++m == machines) m = 0;
1919 PERSON *p = registry_request_access(users_guids[u], machines_guids[m], machines_urls[m], "test", now);
1921 if(p->guid != users_guids[u])
1922 fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[u], p->guid);
1924 print_stats(u, start, timems());
1927 fprintf(stderr, "\n%u random users accessing a random server, out of the %u servers\n", users, machines);
1929 for(u = 0; u < users ; u++) {
1930 uint32_t tu = random() * users / RAND_MAX;
1931 uint32_t tm = random() * machines / RAND_MAX;
1933 PERSON *p = registry_request_access(users_guids[tu], machines_guids[tm], machines_urls[tm], "test", now);
1935 if(p->guid != users_guids[tu])
1936 fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[tu], p->guid);
1938 print_stats(u, start, timems());
1941 fprintf(stderr, "\n%u random users accessing a random server, out of %u servers\n", users, machines2);
1943 for(u = 0; u < users ; u++) {
1944 uint32_t tu = random() * users / RAND_MAX;
1945 uint32_t tm = random() * machines2 / RAND_MAX;
1947 PERSON *p = registry_request_access(users_guids[tu], machines_guids[tm], machines_urls[tm], "test", now);
1949 if(p->guid != users_guids[tu])
1950 fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[tu], p->guid);
1952 print_stats(u, start, timems());
1954 for(m = 0; m < 10; m++) {
1957 "\n%u random user accesses to a random server, out of %u servers,\n > using 1/10000 with a random url, 1/1000 with a mismatched url\n",
1958 users * 2, machines2);
1960 for (u = 0; u < users * 2; u++) {
1961 uint32_t tu = random() * users / RAND_MAX;
1962 uint32_t tm = random() * machines2 / RAND_MAX;
1964 char *url = machines_urls[tm];
1965 char buf[FILENAME_MAX + 1];
1966 if (random() % 10000 == 1234) {
1967 snprintf(buf, FILENAME_MAX, "http://random.%ld.netdata.rocks/", random());
1970 else if (random() % 1000 == 123)
1971 url = machines_urls[random() * machines2 / RAND_MAX];
1973 PERSON *p = registry_request_access(users_guids[tu], machines_guids[tm], url, "test", now);
1975 if (p->guid != users_guids[tu])
1976 fprintf(stderr, "ERROR: expected to get user guid '%s' but git '%s'", users_guids[tu], p->guid);
1978 print_stats(u, start, timems());
1981 fprintf(stderr, "\n\nSAVE\n");
1984 print_stats(registry.persons_count, start, timems());
1986 fprintf(stderr, "\n\nCLEANUP\n");
1989 print_stats(registry.persons_count, start, timems());
1993 // ----------------------------------------------------------------------------
1996 int main(int argc, char **argv) {
1997 // debug_flags = 0xFFFFFFFF;
1998 // test1(argc, argv);
2007 fprintf(stderr, "\n\nINITIALIZATION\n");
2013 fprintf(stderr, "\n\nADDING ENTRY\n");
2014 p1 = registry_request_access("2c95abd0-1542-11e6-8c66-00508db7e9c9", "7c173980-145c-11e6-b86f-00508db7e9c1", "http://localhost:19999/", "test", time(NULL));
2018 #ifdef REGISTRY_STDOUT_DUMP
2019 fprintf(stderr, "\n\nADDING ENTRY\n");
2020 #endif /* REGISTRY_STDOUT_DUMP */
2021 p1 = registry_request_access(NULL, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://localhost:19999/", "test", time(NULL));
2023 #ifdef REGISTRY_STDOUT_DUMP
2024 fprintf(stderr, "\n\nADDING ANOTHER URL\n");
2025 #endif /* REGISTRY_STDOUT_DUMP */
2026 p1 = registry_request_access(p1->guid, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://127.0.0.1:19999/", "test", time(NULL));
2028 #ifdef REGISTRY_STDOUT_DUMP
2029 fprintf(stderr, "\n\nADDING ANOTHER URL\n");
2030 #endif /* REGISTRY_STDOUT_DUMP */
2031 p1 = registry_request_access(p1->guid, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://my.server:19999/", "test", time(NULL));
2033 #ifdef REGISTRY_STDOUT_DUMP
2034 fprintf(stderr, "\n\nADDING ANOTHER MACHINE\n");
2035 #endif /* REGISTRY_STDOUT_DUMP */
2036 p1 = registry_request_access(p1->guid, "7c173980-145c-11e6-b86f-00508db7e9c1", "http://my.server:19999/", "test", time(NULL));
2038 #ifdef REGISTRY_STDOUT_DUMP
2039 fprintf(stderr, "\n\nADDING ANOTHER PERSON\n");
2040 #endif /* REGISTRY_STDOUT_DUMP */
2041 p2 = registry_request_access(NULL, "7c173980-145c-11e6-b86f-00508db7e9c3", "http://localhost:19999/", "test", time(NULL));
2043 #ifdef REGISTRY_STDOUT_DUMP
2044 fprintf(stderr, "\n\nADDING ANOTHER MACHINE\n");
2045 #endif /* REGISTRY_STDOUT_DUMP */
2046 p2 = registry_request_access(p2->guid, "7c173980-145c-11e6-b86f-00508db7e9c3", "http://localhost:19999/", "test", time(NULL));
2049 fprintf(stderr, "\n\nSAVE\n");
2052 fprintf(stderr, "\n\nCLEANUP\n");
2057 #endif /* REGISTRY_STANDALONE_TESTS */