diff options
Diffstat (limited to 'src/registry.c')
| -rw-r--r-- | src/registry.c | 1754 |
1 files changed, 128 insertions, 1626 deletions
diff --git a/src/registry.c b/src/registry.c index a0fb629ad..d223cd6f1 100644 --- a/src/registry.c +++ b/src/registry.c @@ -1,1015 +1,29 @@ #include "common.h" -// ---------------------------------------------------------------------------- -// TODO -// -// 1. the default tracking cookie expires in 1 year, but the persons are not -// removed from the db - this means the database only grows - ideally the -// database should be cleaned in registry_save() for both on-disk and -// on-memory entries. -// -// Cleanup: -// i. Find all the PERSONs that have expired cookie -// ii. For each of their PERSON_URLs: -// - decrement the linked MACHINE links -// - if the linked MACHINE has no other links, remove the linked MACHINE too -// - remove the PERSON_URL -// -// 2. add protection to prevent abusing the registry by flooding it with -// requests to fill the memory and crash it. -// -// Possible protections: -// - limit the number of URLs per person -// - limit the number of URLs per machine -// - limit the number of persons -// - limit the number of machines -// - [DONE] limit the size of URLs -// - [DONE] limit the size of PERSON_URL names -// - limit the number of requests that add data to the registry, -// per client IP per hour -// -// 3. lower memory requirements -// -// - embed avl structures directly into registry objects, instead of DICTIONARY -// - store GUIDs in memory as UUID instead of char * -// (this will also remove the index hash, since UUIDs can be compared directly) -// - do not track persons using the demo machines only -// (i.e. start tracking them only when they access a non-demo machine) -// - [DONE] do not track custom dashboards by default - -#define REGISTRY_URL_FLAGS_DEFAULT 0x00 -#define REGISTRY_URL_FLAGS_EXPIRED 0x01 - -#define DICTIONARY_FLAGS DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE | DICTIONARY_FLAG_NAME_LINK_DONT_CLONE - -// ---------------------------------------------------------------------------- -// COMMON structures - -struct registry { - int enabled; - - char machine_guid[36 + 1]; - - // entries counters / statistics - unsigned long long persons_count; - unsigned long long machines_count; - unsigned long long usages_count; - unsigned long long urls_count; - unsigned long long persons_urls_count; - unsigned long long machines_urls_count; - unsigned long long log_count; - - // memory counters / statistics - unsigned long long persons_memory; - unsigned long long machines_memory; - unsigned long long urls_memory; - unsigned long long persons_urls_memory; - unsigned long long machines_urls_memory; - - // configuration - unsigned long long save_registry_every_entries; - char *registry_domain; - char *hostname; - char *registry_to_announce; - time_t persons_expiration; // seconds to expire idle persons - int verify_cookies_redirects; - - size_t max_url_length; - size_t max_name_length; - - // file/path names - char *pathname; - char *db_filename; - char *log_filename; - char *machine_guid_filename; - - // open files - FILE *log_fp; - - // the database - DICTIONARY *persons; // dictionary of PERSON *, with key the PERSON.guid - DICTIONARY *machines; // dictionary of MACHINE *, with key the MACHINE.guid - DICTIONARY *urls; // dictionary of URL *, with key the URL.url - - // concurrency locking - // we keep different locks for different things - // so that many tasks can be completed in parallel - pthread_mutex_t persons_lock; - pthread_mutex_t machines_lock; - pthread_mutex_t urls_lock; - pthread_mutex_t person_urls_lock; - pthread_mutex_t machine_urls_lock; - pthread_mutex_t log_lock; -} registry; - - -// ---------------------------------------------------------------------------- -// URL structures -// Save memory by de-duplicating URLs -// so instead of storing URLs all over the place -// we store them here and we keep pointers elsewhere - -struct url { - uint32_t links; // the number of links to this URL - when none is left, we free it - uint16_t len; // the length of the URL in bytes - char url[1]; // the URL - dynamically allocated to more size -}; -typedef struct url URL; - - -// ---------------------------------------------------------------------------- -// MACHINE structures - -// For each MACHINE-URL pair we keep this -struct machine_url { - URL *url; // de-duplicated URL -// DICTIONARY *persons; // dictionary of PERSON * - - uint8_t flags; - uint32_t first_t; // the first time we saw this - uint32_t last_t; // the last time we saw this - uint32_t usages; // how many times this has been accessed -}; -typedef struct machine_url MACHINE_URL; - -// A machine -struct machine { - char guid[36 + 1]; // the GUID - - uint32_t links; // the number of PERSON_URLs linked to this machine - - DICTIONARY *urls; // MACHINE_URL * - - uint32_t first_t; // the first time we saw this - uint32_t last_t; // the last time we saw this - uint32_t usages; // how many times this has been accessed -}; -typedef struct machine MACHINE; - - -// ---------------------------------------------------------------------------- -// PERSON structures - -// for each PERSON-URL pair we keep this -struct person_url { - URL *url; // de-duplicated URL - MACHINE *machine; // link the MACHINE of this URL - - uint8_t flags; - uint32_t first_t; // the first time we saw this - uint32_t last_t; // the last time we saw this - uint32_t usages; // how many times this has been accessed - - char name[1]; // the name of the URL, as known by the user - // dynamically allocated to fit properly -}; -typedef struct person_url PERSON_URL; - -// A person -struct person { - char guid[36 + 1]; // the person GUID - - DICTIONARY *urls; // dictionary of PERSON_URL * - - uint32_t first_t; // the first time we saw this - uint32_t last_t; // the last time we saw this - uint32_t usages; // how many times this has been accessed -}; -typedef struct person PERSON; +#include "registry_internals.h" +#define REGISTRY_STATUS_OK "ok" +#define REGISTRY_STATUS_FAILED "failed" +#define REGISTRY_STATUS_DISABLED "disabled" // ---------------------------------------------------------------------------- // REGISTRY concurrency locking -static inline void registry_persons_lock(void) { - pthread_mutex_lock(®istry.persons_lock); -} - -static inline void registry_persons_unlock(void) { - pthread_mutex_unlock(®istry.persons_lock); -} - -static inline void registry_machines_lock(void) { - pthread_mutex_lock(®istry.machines_lock); -} - -static inline void registry_machines_unlock(void) { - pthread_mutex_unlock(®istry.machines_lock); -} - -static inline void registry_urls_lock(void) { - pthread_mutex_lock(®istry.urls_lock); -} - -static inline void registry_urls_unlock(void) { - pthread_mutex_unlock(®istry.urls_lock); -} - -// ideally, we should not lock the whole registry for -// updating a person's urls. -// however, to save the memory required for keeping a -// mutex (40 bytes) per person, we do... -static inline void registry_person_urls_lock(PERSON *p) { - (void)p; - pthread_mutex_lock(®istry.person_urls_lock); -} - -static inline void registry_person_urls_unlock(PERSON *p) { - (void)p; - pthread_mutex_unlock(®istry.person_urls_lock); -} - -// ideally, we should not lock the whole registry for -// updating a machine's urls. -// however, to save the memory required for keeping a -// mutex (40 bytes) per machine, we do... -static inline void registry_machine_urls_lock(MACHINE *m) { - (void)m; - pthread_mutex_lock(®istry.machine_urls_lock); -} - -static inline void registry_machine_urls_unlock(MACHINE *m) { - (void)m; - pthread_mutex_unlock(®istry.machine_urls_lock); -} - -static inline void registry_log_lock(void) { - pthread_mutex_lock(®istry.log_lock); -} - -static inline void registry_log_unlock(void) { - pthread_mutex_unlock(®istry.log_lock); -} - - -// ---------------------------------------------------------------------------- -// common functions - -// parse a GUID and re-generated to be always lower case -// this is used as a protection against the variations of GUIDs -static inline int registry_regenerate_guid(const char *guid, char *result) { - uuid_t uuid; - if(unlikely(uuid_parse(guid, uuid) == -1)) { - info("Registry: GUID '%s' is not a valid GUID.", guid); - return -1; - } - else { - uuid_unparse_lower(uuid, result); - -#ifdef NETDATA_INTERNAL_CHECKS - if(strcmp(guid, result)) - info("Registry: source GUID '%s' and re-generated GUID '%s' differ!", guid, result); -#endif /* NETDATA_INTERNAL_CHECKS */ - } - - return 0; -} - -// make sure the names of the machines / URLs do not contain any tabs -// (which are used as our separator in the database files) -// and are properly trimmed (before and after) -static inline char *registry_fix_machine_name(char *name, size_t *len) { - char *s = name?name:""; - - // skip leading spaces - while(*s && isspace(*s)) s++; - - // make sure all spaces are a SPACE - char *t = s; - while(*t) { - if(unlikely(isspace(*t))) - *t = ' '; - - t++; - } - - // remove trailing spaces - while(--t >= s) { - if(*t == ' ') - *t = '\0'; - else - break; - } - t++; - - if(likely(len)) - *len = (t - s); - - return s; -} - -static inline char *registry_fix_url(char *url, size_t *len) { - return registry_fix_machine_name(url, len); -} - - -// ---------------------------------------------------------------------------- -// forward definition of functions - -extern PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when); -extern PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when); - - -// ---------------------------------------------------------------------------- -// URL - -static inline URL *registry_url_allocate_nolock(const char *url, size_t urllen) { - // protection from too big URLs - if(urllen > registry.max_url_length) - urllen = registry.max_url_length; - - debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): allocating %zu bytes", url, sizeof(URL) + urllen); - URL *u = mallocz(sizeof(URL) + urllen); - - // a simple strcpy() should do the job - // but I prefer to be safe, since the caller specified urllen - u->len = (uint16_t)urllen; - strncpyz(u->url, url, u->len); - u->links = 0; - - registry.urls_memory += sizeof(URL) + urllen; - - debug(D_REGISTRY, "Registry: registry_url_allocate_nolock('%s'): indexing it", url); - dictionary_set(registry.urls, u->url, u, sizeof(URL)); - - return u; -} - -static inline URL *registry_url_get_nolock(const char *url, size_t urllen) { - debug(D_REGISTRY, "Registry: registry_url_get_nolock('%s')", url); - - URL *u = dictionary_get(registry.urls, url); - if(!u) { - u = registry_url_allocate_nolock(url, urllen); - registry.urls_count++; - } - - return u; -} - -static inline URL *registry_url_get(const char *url, size_t urllen) { - debug(D_REGISTRY, "Registry: registry_url_get('%s')", url); - - registry_urls_lock(); - - URL *u = registry_url_get_nolock(url, urllen); - - registry_urls_unlock(); - - return u; -} - -static inline void registry_url_link_nolock(URL *u) { - u->links++; - debug(D_REGISTRY, "Registry: registry_url_link_nolock('%s'): URL has now %u links", u->url, u->links); -} - -static inline void registry_url_unlink_nolock(URL *u) { - u->links--; - if(!u->links) { - debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): No more links for this URL", u->url); - dictionary_del(registry.urls, u->url); - freez(u); - } - else - debug(D_REGISTRY, "Registry: registry_url_unlink_nolock('%s'): URL has %u links left", u->url, u->links); -} - - -// ---------------------------------------------------------------------------- -// MACHINE - -static inline MACHINE *registry_machine_find(const char *machine_guid) { - debug(D_REGISTRY, "Registry: registry_machine_find('%s')", machine_guid); - return dictionary_get(registry.machines, machine_guid); -} - -static inline MACHINE_URL *registry_machine_url_allocate(MACHINE *m, URL *u, time_t when) { - debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): allocating %zu bytes", m->guid, u->url, sizeof(MACHINE_URL)); - - MACHINE_URL *mu = mallocz(sizeof(MACHINE_URL)); - - // mu->persons = dictionary_create(DICTIONARY_FLAGS); - // dictionary_set(mu->persons, p->guid, p, sizeof(PERSON)); - - mu->first_t = mu->last_t = (uint32_t)when; - mu->usages = 1; - mu->url = u; - mu->flags = REGISTRY_URL_FLAGS_DEFAULT; - - registry.machines_urls_memory += sizeof(MACHINE_URL); - - debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s'): indexing URL in machine", m->guid, u->url); - dictionary_set(m->urls, u->url, mu, sizeof(MACHINE_URL)); - registry_url_link_nolock(u); - - return mu; -} - -static inline MACHINE *registry_machine_allocate(const char *machine_guid, time_t when) { - debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating new machine, sizeof(MACHINE)=%zu", machine_guid, sizeof(MACHINE)); - - MACHINE *m = mallocz(sizeof(MACHINE)); - - strncpyz(m->guid, machine_guid, 36); - - debug(D_REGISTRY, "Registry: registry_machine_allocate('%s'): creating dictionary of urls", machine_guid); - m->urls = dictionary_create(DICTIONARY_FLAGS); - - m->first_t = m->last_t = (uint32_t)when; - m->usages = 0; - - registry.machines_memory += sizeof(MACHINE); - - registry.machines_count++; - dictionary_set(registry.machines, m->guid, m, sizeof(MACHINE)); - - return m; -} - -// 1. validate machine GUID -// 2. if it is valid, find it or create it and return it -// 3. if it is not valid, return NULL -static inline MACHINE *registry_machine_get(const char *machine_guid, time_t when) { - MACHINE *m = NULL; - - registry_machines_lock(); - - if(likely(machine_guid && *machine_guid)) { - // validate it is a GUID - char buf[36 + 1]; - if(unlikely(registry_regenerate_guid(machine_guid, buf) == -1)) - info("Registry: machine guid '%s' is not a valid guid. Ignoring it.", machine_guid); - else { - machine_guid = buf; - m = registry_machine_find(machine_guid); - if(!m) m = registry_machine_allocate(machine_guid, when); - } - } - - registry_machines_unlock(); - - return m; -} - - -// ---------------------------------------------------------------------------- -// PERSON - -static inline PERSON *registry_person_find(const char *person_guid) { - debug(D_REGISTRY, "Registry: registry_person_find('%s')", person_guid); - return dictionary_get(registry.persons, person_guid); -} - -static inline PERSON_URL *registry_person_url_allocate(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) { - // protection from too big names - if(namelen > registry.max_name_length) - namelen = registry.max_name_length; - - debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url, - sizeof(PERSON_URL) + namelen); - - PERSON_URL *pu = mallocz(sizeof(PERSON_URL) + namelen); - - // a simple strcpy() should do the job - // but I prefer to be safe, since the caller specified urllen - strncpyz(pu->name, name, namelen); - - pu->machine = m; - pu->first_t = pu->last_t = when; - pu->usages = 1; - pu->url = u; - pu->flags = REGISTRY_URL_FLAGS_DEFAULT; - m->links++; - - registry.persons_urls_memory += sizeof(PERSON_URL) + namelen; - - debug(D_REGISTRY, "registry_person_url_allocate('%s', '%s', '%s'): indexing URL in person", p->guid, m->guid, u->url); - dictionary_set(p->urls, u->url, pu, sizeof(PERSON_URL)); - registry_url_link_nolock(u); - - return pu; -} - -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) { - // this function is needed to change the name of a PERSON_URL - - debug(D_REGISTRY, "registry_person_url_reallocate('%s', '%s', '%s'): allocating %zu bytes", p->guid, m->guid, u->url, - sizeof(PERSON_URL) + namelen); - - PERSON_URL *tpu = registry_person_url_allocate(p, m, u, name, namelen, when); - tpu->first_t = pu->first_t; - tpu->last_t = pu->last_t; - tpu->usages = pu->usages; - - // ok, these are a hack - since the registry_person_url_allocate() is - // adding these, we have to subtract them - tpu->machine->links--; - registry.persons_urls_memory -= sizeof(PERSON_URL) + strlen(pu->name); - registry_url_unlink_nolock(u); - - freez(pu); - - return tpu; -} - -static inline PERSON *registry_person_allocate(const char *person_guid, time_t when) { - PERSON *p = NULL; - - debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): allocating new person, sizeof(PERSON)=%zu", (person_guid)?person_guid:"", sizeof(PERSON)); - - p = mallocz(sizeof(PERSON)); - - if(!person_guid) { - for (; ;) { - uuid_t uuid; - uuid_generate(uuid); - uuid_unparse_lower(uuid, p->guid); - - debug(D_REGISTRY, "Registry: Checking if the generated person guid '%s' is unique", p->guid); - if (!dictionary_get(registry.persons, p->guid)) { - debug(D_REGISTRY, "Registry: generated person guid '%s' is unique", p->guid); - break; - } - else - info("Registry: generated person guid '%s' found in the registry. Retrying...", p->guid); - } - } - else - strncpyz(p->guid, person_guid, 36); - - debug(D_REGISTRY, "Registry: registry_person_allocate('%s'): creating dictionary of urls", p->guid); - p->urls = dictionary_create(DICTIONARY_FLAGS); - - p->first_t = p->last_t = when; - p->usages = 0; - - registry.persons_memory += sizeof(PERSON); - - registry.persons_count++; - dictionary_set(registry.persons, p->guid, p, sizeof(PERSON)); - - return p; -} - - -// 1. validate person GUID -// 2. if it is valid, find it -// 3. if it is not valid, create a new one -// 4. return it -static inline PERSON *registry_person_get(const char *person_guid, time_t when) { - PERSON *p = NULL; - - registry_persons_lock(); - - if(person_guid && *person_guid) { - char buf[36 + 1]; - // validate it is a GUID - if(unlikely(registry_regenerate_guid(person_guid, buf) == -1)) - info("Registry: person guid '%s' is not a valid guid. Ignoring it.", person_guid); - else { - person_guid = buf; - p = registry_person_find(person_guid); - } - } - - if(!p) p = registry_person_allocate(NULL, when); - - registry_persons_unlock(); - - return p; -} - -// ---------------------------------------------------------------------------- -// LINKING OF OBJECTS - -static inline PERSON_URL *registry_person_link_to_url(PERSON *p, MACHINE *m, URL *u, char *name, size_t namelen, time_t when) { - debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): searching for URL in person", p->guid, m->guid, u->url); - - registry_person_urls_lock(p); - - PERSON_URL *pu = dictionary_get(p->urls, u->url); - if(!pu) { - debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url); - pu = registry_person_url_allocate(p, m, u, name, namelen, when); - registry.persons_urls_count++; - } - else { - debug(D_REGISTRY, "registry_person_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url); - pu->usages++; - if(likely(pu->last_t < (uint32_t)when)) pu->last_t = when; - - if(pu->machine != m) { - MACHINE_URL *mu = dictionary_get(pu->machine->urls, u->url); - if(mu) { - info("registry_person_link_to_url('%s', '%s', '%s'): URL switched machines (old was '%s') - expiring it from previous machine.", - p->guid, m->guid, u->url, pu->machine->guid); - mu->flags |= REGISTRY_URL_FLAGS_EXPIRED; - } - else { - 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.", - p->guid, m->guid, u->url, pu->machine->guid); - } - - pu->machine->links--; - pu->machine = m; - } - - if(strcmp(pu->name, name)) { - // the name of the PERSON_URL has changed ! - pu = registry_person_url_reallocate(p, m, u, name, namelen, when, pu); - } - } - - p->usages++; - if(likely(p->last_t < (uint32_t)when)) p->last_t = when; - - if(pu->flags & REGISTRY_URL_FLAGS_EXPIRED) { - info("registry_person_link_to_url('%s', '%s', '%s'): accessing an expired URL. Re-enabling URL.", p->guid, m->guid, u->url); - pu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED; - } - - registry_person_urls_unlock(p); - - return pu; -} - -static inline MACHINE_URL *registry_machine_link_to_url(PERSON *p, MACHINE *m, URL *u, time_t when) { - debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): searching for URL in machine", p->guid, m->guid, u->url); - - registry_machine_urls_lock(m); - - MACHINE_URL *mu = dictionary_get(m->urls, u->url); - if(!mu) { - debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): not found", p->guid, m->guid, u->url); - mu = registry_machine_url_allocate(m, u, when); - registry.machines_urls_count++; - } - else { - debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): found", p->guid, m->guid, u->url); - mu->usages++; - if(likely(mu->last_t < (uint32_t)when)) mu->last_t = when; - } - - //debug(D_REGISTRY, "registry_machine_link_to_url('%s', '%s', '%s'): indexing person in machine", p->guid, m->guid, u->url); - //dictionary_set(mu->persons, p->guid, p, sizeof(PERSON)); - - m->usages++; - if(likely(m->last_t < (uint32_t)when)) m->last_t = when; - - if(mu->flags & REGISTRY_URL_FLAGS_EXPIRED) { - info("registry_machine_link_to_url('%s', '%s', '%s'): accessing an expired URL.", p->guid, m->guid, u->url); - mu->flags &= ~REGISTRY_URL_FLAGS_EXPIRED; - } - - registry_machine_urls_unlock(m); - - return mu; -} - -// ---------------------------------------------------------------------------- -// REGISTRY LOG LOAD/SAVE - -static inline int registry_should_save_db(void) { - debug(D_REGISTRY, "log entries %llu, max %llu", registry.log_count, registry.save_registry_every_entries); - return registry.log_count > registry.save_registry_every_entries; -} - -static inline void registry_log(const char action, PERSON *p, MACHINE *m, URL *u, char *name) { - if(likely(registry.log_fp)) { - // we lock only if the file is open - // to allow replaying the log at registry_log_load() - registry_log_lock(); - - if(unlikely(fprintf(registry.log_fp, "%c\t%08x\t%s\t%s\t%s\t%s\n", - action, - p->last_t, - p->guid, - m->guid, - name, - u->url) < 0)) - error("Registry: failed to save log. Registry data may be lost in case of abnormal restart."); - - // we increase the counter even on failures - // so that the registry will be saved periodically - registry.log_count++; - - registry_log_unlock(); - - // this must be outside the log_lock(), or a deadlock will happen. - // registry_save() checks the same inside the log_lock, so only - // one thread will save the db - if(unlikely(registry_should_save_db())) - registry_save(); - } -} - -static inline int registry_log_open_nolock(void) { - if(registry.log_fp) - fclose(registry.log_fp); - - registry.log_fp = fopen(registry.log_filename, "a"); - - if(registry.log_fp) { - if (setvbuf(registry.log_fp, NULL, _IOLBF, 0) != 0) - error("Cannot set line buffering on registry log file."); - return 0; - } - - error("Cannot open registry log file '%s'. Registry data will be lost in case of netdata or server crash.", registry.log_filename); - return -1; -} - -static inline void registry_log_close_nolock(void) { - if(registry.log_fp) { - fclose(registry.log_fp); - registry.log_fp = NULL; - } -} - -static inline void registry_log_recreate_nolock(void) { - if(registry.log_fp != NULL) { - registry_log_close_nolock(); - - // open it with truncate - registry.log_fp = fopen(registry.log_filename, "w"); - if(registry.log_fp) fclose(registry.log_fp); - else error("Cannot truncate registry log '%s'", registry.log_filename); - - registry.log_fp = NULL; - - registry_log_open_nolock(); - } -} - -int registry_log_load(void) { - char *s, buf[4096 + 1]; - size_t line = -1; - - // closing the log is required here - // otherwise we will append to it the values we read - registry_log_close_nolock(); - - debug(D_REGISTRY, "Registry: loading active db from: %s", registry.log_filename); - FILE *fp = fopen(registry.log_filename, "r"); - if(!fp) - error("Registry: cannot open registry file: %s", registry.log_filename); - else { - line = 0; - size_t len = 0; - while ((s = fgets_trim_len(buf, 4096, fp, &len))) { - line++; - - switch (s[0]) { - case 'A': // accesses - case 'D': // deletes - - // verify it is valid - if (unlikely(len < 85 || s[1] != '\t' || s[10] != '\t' || s[47] != '\t' || s[84] != '\t')) { - error("Registry: log line %zu is wrong (len = %zu).", line, len); - continue; - } - s[1] = s[10] = s[47] = s[84] = '\0'; - - // get the variables - time_t when = strtoul(&s[2], NULL, 16); - char *person_guid = &s[11]; - char *machine_guid = &s[48]; - char *name = &s[85]; - - // skip the name to find the url - char *url = name; - while(*url && *url != '\t') url++; - if(!*url) { - error("Registry: log line %zu does not have a url.", line); - continue; - } - *url++ = '\0'; - - // make sure the person exists - // without this, a new person guid will be created - PERSON *p = registry_person_find(person_guid); - if(!p) p = registry_person_allocate(person_guid, when); - - if(s[0] == 'A') - registry_request_access(p->guid, machine_guid, url, name, when); - else - registry_request_delete(p->guid, machine_guid, url, name, when); - - registry.log_count++; - break; - - default: - error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.log_filename, s); - break; - } - } - - fclose(fp); - } - - // open the log again - registry_log_open_nolock(); - - return line; -} - - -// ---------------------------------------------------------------------------- -// REGISTRY REQUESTS - -PERSON *registry_request_access(char *person_guid, char *machine_guid, char *url, char *name, time_t when) { - debug(D_REGISTRY, "registry_request_access('%s', '%s', '%s'): NEW REQUEST", (person_guid)?person_guid:"", machine_guid, url); - - MACHINE *m = registry_machine_get(machine_guid, when); - if(!m) return NULL; - - // make sure the name is valid - size_t namelen; - name = registry_fix_machine_name(name, &namelen); - - size_t urllen; - url = registry_fix_url(url, &urllen); - - URL *u = registry_url_get(url, urllen); - PERSON *p = registry_person_get(person_guid, when); - - registry_person_link_to_url(p, m, u, name, namelen, when); - registry_machine_link_to_url(p, m, u, when); - - registry_log('A', p, m, u, name); - - registry.usages_count++; - return p; -} - -// verify the person, the machine and the URL exist in our DB -PERSON_URL *registry_verify_request(char *person_guid, char *machine_guid, char *url, PERSON **pp, MACHINE **mm) { - char pbuf[36 + 1], mbuf[36 + 1]; - - if(!person_guid || !*person_guid || !machine_guid || !*machine_guid || !url || !*url) { - 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"); - return NULL; - } - - // normalize the url - url = registry_fix_url(url, NULL); - - // make sure the person GUID is valid - if(registry_regenerate_guid(person_guid, pbuf) == -1) { - info("Registry Request Verification: invalid person GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url); - return NULL; - } - person_guid = pbuf; - - // make sure the machine GUID is valid - if(registry_regenerate_guid(machine_guid, mbuf) == -1) { - info("Registry Request Verification: invalid machine GUID, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url); - return NULL; - } - machine_guid = mbuf; - - // make sure the machine exists - MACHINE *m = registry_machine_find(machine_guid); - if(!m) { - info("Registry Request Verification: machine not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url); - return NULL; - } - if(mm) *mm = m; - - // make sure the person exist - PERSON *p = registry_person_find(person_guid); - if(!p) { - info("Registry Request Verification: person not found, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url); - return NULL; - } - if(pp) *pp = p; - - PERSON_URL *pu = dictionary_get(p->urls, url); - if(!pu) { - info("Registry Request Verification: URL not found for person, person: '%s', machine '%s', url '%s'", person_guid, machine_guid, url); - return NULL; - } - return pu; +static inline void registry_lock(void) { + pthread_mutex_lock(®istry.lock); } -PERSON *registry_request_delete(char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) { - (void)when; - - PERSON *p = NULL; - MACHINE *m = NULL; - PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m); - if(!pu || !p || !m) return NULL; - - // normalize the url - delete_url = registry_fix_url(delete_url, NULL); - - // make sure the user is not deleting the url it uses - if(!strcmp(delete_url, pu->url->url)) { - 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); - return NULL; - } - - registry_person_urls_lock(p); - - PERSON_URL *dpu = dictionary_get(p->urls, delete_url); - if(!dpu) { - 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); - registry_person_urls_unlock(p); - return NULL; - } - - registry_log('D', p, m, pu->url, dpu->url->url); - - dictionary_del(p->urls, dpu->url->url); - registry_url_unlink_nolock(dpu->url); - freez(dpu); - - registry_person_urls_unlock(p); - return p; -} - - -// a structure to pass to the dictionary_get_all() callback handler -struct machine_request_callback_data { - MACHINE *find_this_machine; - PERSON_URL *result; -}; - -// the callback function -// this will be run for every PERSON_URL of this PERSON -int machine_request_callback(void *entry, void *data) { - PERSON_URL *mypu = (PERSON_URL *)entry; - struct machine_request_callback_data *myrdata = (struct machine_request_callback_data *)data; - - if(mypu->machine == myrdata->find_this_machine) { - myrdata->result = mypu; - return -1; // this will also stop the walk through - } - - return 0; // continue -} - -MACHINE *registry_request_machine(char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) { - (void)when; - - char mbuf[36 + 1]; - - PERSON *p = NULL; - MACHINE *m = NULL; - PERSON_URL *pu = registry_verify_request(person_guid, machine_guid, url, &p, &m); - if(!pu || !p || !m) return NULL; - - // make sure the machine GUID is valid - if(registry_regenerate_guid(request_machine, mbuf) == -1) { - 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); - return NULL; - } - request_machine = mbuf; - - // make sure the machine exists - m = registry_machine_find(request_machine); - if(!m) { - info("Registry Machine URLs request: machine not found, person: '%s', machine '%s', url '%s', request machine '%s'", p->guid, machine_guid, pu->url->url, request_machine); - return NULL; - } - - // Verify the user has in the past accessed this machine - // We will walk through the PERSON_URLs to find the machine - // linking to our machine - - // a structure to pass to the dictionary_get_all() callback handler - struct machine_request_callback_data rdata = { m, NULL }; - - // request a walk through on the dictionary - // no need for locking here, the underlying dictionary has its own - dictionary_get_all(p->urls, machine_request_callback, &rdata); - - if(rdata.result) - return m; - - return NULL; +static inline void registry_unlock(void) { + pthread_mutex_unlock(®istry.lock); } // ---------------------------------------------------------------------------- -// REGISTRY JSON generation - -#define REGISTRY_STATUS_OK "ok" -#define REGISTRY_STATUS_FAILED "failed" -#define REGISTRY_STATUS_DISABLED "disabled" - -int registry_verify_cookies_redirects(void) { - return registry.verify_cookies_redirects; -} - -const char *registry_to_announce(void) { - return registry.registry_to_announce; -} +// COOKIES -void registry_set_cookie(struct web_client *w, const char *guid) { +static void registry_set_cookie(struct web_client *w, const char *guid) { char edate[100]; - time_t et = time(NULL) + registry.persons_expiration; + time_t et = now_realtime_sec() + registry.persons_expiration; struct tm etmbuf, *etm = gmtime_r(&et, &etmbuf); strftime(edate, sizeof(edate), "%a, %d %b %Y %H:%M:%S %Z", etm); @@ -1019,52 +33,50 @@ void registry_set_cookie(struct web_client *w, const char *guid) { snprintfz(w->cookie2, COOKIE_MAX, NETDATA_REGISTRY_COOKIE_NAME "=%s; Domain=%s; Expires=%s", guid, registry.registry_domain, edate); } -static inline void registry_set_person_cookie(struct web_client *w, PERSON *p) { +static inline void registry_set_person_cookie(struct web_client *w, REGISTRY_PERSON *p) { registry_set_cookie(w, p->guid); } + +// ---------------------------------------------------------------------------- +// JSON GENERATION + static inline void registry_json_header(struct web_client *w, const char *action, const char *status) { buffer_flush(w->response.data); w->response.data->contenttype = CT_APPLICATION_JSON; buffer_sprintf(w->response.data, "{\n\t\"action\": \"%s\",\n\t\"status\": \"%s\",\n\t\"hostname\": \"%s\",\n\t\"machine_guid\": \"%s\"", - action, status, registry.hostname, registry.machine_guid); + action, status, registry.hostname, registry.machine_guid); } static inline void registry_json_footer(struct web_client *w) { buffer_strcat(w->response.data, "\n}\n"); } -int registry_request_hello_json(struct web_client *w) { - registry_json_header(w, "hello", REGISTRY_STATUS_OK); - - buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"", - registry.registry_to_announce); - - registry_json_footer(w); - return 200; -} - static inline int registry_json_disabled(struct web_client *w, const char *action) { registry_json_header(w, action, REGISTRY_STATUS_DISABLED); buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"", - registry.registry_to_announce); + registry.registry_to_announce); registry_json_footer(w); return 200; } + +// ---------------------------------------------------------------------------- +// CALLBACKS FOR WALKING THROUGH REGISTRY OBJECTS + // structure used be the callbacks below struct registry_json_walk_person_urls_callback { - PERSON *p; - MACHINE *m; + REGISTRY_PERSON *p; + REGISTRY_MACHINE *m; struct web_client *w; int count; }; // callback for rendering PERSON_URLs -static inline int registry_json_person_url_callback(void *entry, void *data) { - PERSON_URL *pu = (PERSON_URL *)entry; +static int registry_json_person_url_callback(void *entry, void *data) { + REGISTRY_PERSON_URL *pu = (REGISTRY_PERSON_URL *)entry; struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data; struct web_client *w = c->w; @@ -1072,37 +84,92 @@ static inline int registry_json_person_url_callback(void *entry, void *data) { buffer_strcat(w->response.data, ","); buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u, \"%s\" ]", - pu->machine->guid, pu->url->url, pu->last_t, pu->usages, pu->name); + pu->machine->guid, pu->url->url, pu->last_t, pu->usages, pu->machine_name); - return 1; + return 0; } // callback for rendering MACHINE_URLs -static inline int registry_json_machine_url_callback(void *entry, void *data) { - MACHINE_URL *mu = (MACHINE_URL *)entry; +static int registry_json_machine_url_callback(void *entry, void *data) { + REGISTRY_MACHINE_URL *mu = (REGISTRY_MACHINE_URL *)entry; struct registry_json_walk_person_urls_callback *c = (struct registry_json_walk_person_urls_callback *)data; struct web_client *w = c->w; - MACHINE *m = c->m; + REGISTRY_MACHINE *m = c->m; if(unlikely(c->count++)) buffer_strcat(w->response.data, ","); buffer_sprintf(w->response.data, "\n\t\t[ \"%s\", \"%s\", %u000, %u ]", - m->guid, mu->url->url, mu->last_t, mu->usages); + m->guid, mu->url->url, mu->last_t, mu->usages); return 1; } +// ---------------------------------------------------------------------------- + +// structure used be the callbacks below +struct registry_person_url_callback_verify_machine_exists_data { + REGISTRY_MACHINE *m; + int count; +}; + +static inline int registry_person_url_callback_verify_machine_exists(void *entry, void *data) { + struct registry_person_url_callback_verify_machine_exists_data *d = (struct registry_person_url_callback_verify_machine_exists_data *)data; + REGISTRY_PERSON_URL *pu = (REGISTRY_PERSON_URL *)entry; + REGISTRY_MACHINE *m = d->m; + + if(pu->machine == m) + d->count++; + + return 0; +} + +// ---------------------------------------------------------------------------- +// public HELLO request + +int registry_request_hello_json(struct web_client *w) { + registry_json_header(w, "hello", REGISTRY_STATUS_OK); + + buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"", + registry.registry_to_announce); + + registry_json_footer(w); + return 200; +} + +// ---------------------------------------------------------------------------- +//public ACCESS request + +#define REGISTRY_VERIFY_COOKIES_GUID "give-me-back-this-cookie-now--please" // the main method for registering an access int registry_request_access_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *name, time_t when) { - if(!registry.enabled) + if(unlikely(!registry.enabled)) return registry_json_disabled(w, "access"); - PERSON *p = registry_request_access(person_guid, machine_guid, url, name, when); + // ------------------------------------------------------------------------ + // verify the browser supports cookies + + if(registry.verify_cookies_redirects > 0 && !person_guid[0]) { + buffer_flush(w->response.data); + registry_set_cookie(w, REGISTRY_VERIFY_COOKIES_GUID); + w->response.data->contenttype = CT_APPLICATION_JSON; + buffer_sprintf(w->response.data, "{ \"status\": \"redirect\", \"registry\": \"%s\" }", registry.registry_to_announce); + return 200; + } + + if(unlikely(person_guid[0] && !strcmp(person_guid, REGISTRY_VERIFY_COOKIES_GUID))) + person_guid[0] = '\0'; + + // ------------------------------------------------------------------------ + + registry_lock(); + + REGISTRY_PERSON *p = registry_request_access(person_guid, machine_guid, url, name, when); if(!p) { registry_json_header(w, "access", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 412; } @@ -1114,40 +181,54 @@ int registry_request_access_json(struct web_client *w, char *person_guid, char * buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\",\n\t\"urls\": [", p->guid); struct registry_json_walk_person_urls_callback c = { p, NULL, w, 0 }; - dictionary_get_all(p->urls, registry_json_person_url_callback, &c); + avl_traverse(&p->person_urls, registry_json_person_url_callback, &c); buffer_strcat(w->response.data, "\n\t]\n"); registry_json_footer(w); + registry_unlock(); return 200; } +// ---------------------------------------------------------------------------- +// public DELETE request + // the main method for deleting a URL from a person int registry_request_delete_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *delete_url, time_t when) { if(!registry.enabled) return registry_json_disabled(w, "delete"); - PERSON *p = registry_request_delete(person_guid, machine_guid, url, delete_url, when); + registry_lock(); + + REGISTRY_PERSON *p = registry_request_delete(person_guid, machine_guid, url, delete_url, when); if(!p) { registry_json_header(w, "delete", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 412; } // generate the response registry_json_header(w, "delete", REGISTRY_STATUS_OK); registry_json_footer(w); + registry_unlock(); return 200; } +// ---------------------------------------------------------------------------- +// public SEARCH request + // the main method for searching the URLs of a netdata int registry_request_search_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *request_machine, time_t when) { if(!registry.enabled) return registry_json_disabled(w, "search"); - MACHINE *m = registry_request_machine(person_guid, machine_guid, url, request_machine, when); + registry_lock(); + + REGISTRY_MACHINE *m = registry_request_machine(person_guid, machine_guid, url, request_machine, when); if(!m) { registry_json_header(w, "search", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 404; } @@ -1155,75 +236,69 @@ int registry_request_search_json(struct web_client *w, char *person_guid, char * buffer_strcat(w->response.data, ",\n\t\"urls\": ["); struct registry_json_walk_person_urls_callback c = { NULL, m, w, 0 }; - dictionary_get_all(m->urls, registry_json_machine_url_callback, &c); + dictionary_get_all(m->machine_urls, registry_json_machine_url_callback, &c); buffer_strcat(w->response.data, "\n\t]\n"); registry_json_footer(w); + registry_unlock(); return 200; } -// structure used be the callbacks below -struct registry_person_url_callback_verify_machine_exists_data { - MACHINE *m; - int count; -}; - -int registry_person_url_callback_verify_machine_exists(void *entry, void *data) { - struct registry_person_url_callback_verify_machine_exists_data *d = (struct registry_person_url_callback_verify_machine_exists_data *)data; - PERSON_URL *pu = (PERSON_URL *)entry; - MACHINE *m = d->m; - - if(pu->machine == m) - d->count++; - - return 0; -} +// ---------------------------------------------------------------------------- +// SWITCH REQUEST // the main method for switching user identity int registry_request_switch_json(struct web_client *w, char *person_guid, char *machine_guid, char *url, char *new_person_guid, time_t when) { + if(!registry.enabled) + return registry_json_disabled(w, "switch"); + (void)url; (void)when; - if(!registry.enabled) - return registry_json_disabled(w, "switch"); + registry_lock(); - PERSON *op = registry_person_find(person_guid); + REGISTRY_PERSON *op = registry_person_find(person_guid); if(!op) { registry_json_header(w, "switch", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 430; } - PERSON *np = registry_person_find(new_person_guid); + REGISTRY_PERSON *np = registry_person_find(new_person_guid); if(!np) { registry_json_header(w, "switch", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 431; } - MACHINE *m = registry_machine_find(machine_guid); + REGISTRY_MACHINE *m = registry_machine_find(machine_guid); if(!m) { registry_json_header(w, "switch", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 432; } struct registry_person_url_callback_verify_machine_exists_data data = { m, 0 }; // verify the old person has access to this machine - dictionary_get_all(op->urls, registry_person_url_callback_verify_machine_exists, &data); + avl_traverse(&op->person_urls, registry_person_url_callback_verify_machine_exists, &data); if(!data.count) { registry_json_header(w, "switch", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 433; } // verify the new person has access to this machine data.count = 0; - dictionary_get_all(np->urls, registry_person_url_callback_verify_machine_exists, &data); + avl_traverse(&np->person_urls, registry_person_url_callback_verify_machine_exists, &data); if(!data.count) { registry_json_header(w, "switch", REGISTRY_STATUS_FAILED); registry_json_footer(w); + registry_unlock(); return 434; } @@ -1235,582 +310,9 @@ int registry_request_switch_json(struct web_client *w, char *person_guid, char * registry_json_header(w, "switch", REGISTRY_STATUS_OK); buffer_sprintf(w->response.data, ",\n\t\"person_guid\": \"%s\"", np->guid); registry_json_footer(w); - return 200; -} - - -// ---------------------------------------------------------------------------- -// REGISTRY THIS MACHINE UNIQUE ID - -static inline int is_machine_guid_blacklisted(const char *guid) { - // these are machine GUIDs that have been included in distribution packages. - // we blacklist them here, so that the next version of netdata will generate - // new ones. - - if(!strcmp(guid, "8a795b0c-2311-11e6-8563-000c295076a6") - || !strcmp(guid, "4aed1458-1c3e-11e6-a53f-000c290fc8f5") - ) { - error("Blacklisted machine GUID '%s' found.", guid); - return 1; - } - - return 0; -} - -char *registry_get_this_machine_guid(void) { - if(likely(registry.machine_guid[0])) - return registry.machine_guid; - - // read it from disk - int fd = open(registry.machine_guid_filename, O_RDONLY); - if(fd != -1) { - char buf[36 + 1]; - if(read(fd, buf, 36) != 36) - error("Failed to read machine GUID from '%s'", registry.machine_guid_filename); - else { - buf[36] = '\0'; - if(registry_regenerate_guid(buf, registry.machine_guid) == -1) { - error("Failed to validate machine GUID '%s' from '%s'. Ignoring it - this might mean this netdata will appear as duplicate in the registry.", - buf, registry.machine_guid_filename); - - registry.machine_guid[0] = '\0'; - } - else if(is_machine_guid_blacklisted(registry.machine_guid)) - registry.machine_guid[0] = '\0'; - } - close(fd); - } - - // generate a new one? - if(!registry.machine_guid[0]) { - uuid_t uuid; - - uuid_generate_time(uuid); - uuid_unparse_lower(uuid, registry.machine_guid); - registry.machine_guid[36] = '\0'; - - // save it - fd = open(registry.machine_guid_filename, O_WRONLY|O_CREAT|O_TRUNC, 444); - if(fd == -1) - fatal("Cannot create unique machine id file '%s'. Please fix this.", registry.machine_guid_filename); - - if(write(fd, registry.machine_guid, 36) != 36) - fatal("Cannot write the unique machine id file '%s'. Please fix this.", registry.machine_guid_filename); - - close(fd); - } - - setenv("NETDATA_REGISTRY_UNIQUE_ID", registry.machine_guid, 1); - - return registry.machine_guid; -} - - -// ---------------------------------------------------------------------------- -// REGISTRY LOAD/SAVE - -int registry_machine_save_url(void *entry, void *file) { - MACHINE_URL *mu = entry; - FILE *fp = file; - - debug(D_REGISTRY, "Registry: registry_machine_save_url('%s')", mu->url->url); - - int ret = fprintf(fp, "V\t%08x\t%08x\t%08x\t%02x\t%s\n", - mu->first_t, - mu->last_t, - mu->usages, - mu->flags, - mu->url->url - ); - - // error handling is done at registry_save() - - return ret; -} - -int registry_machine_save(void *entry, void *file) { - MACHINE *m = entry; - FILE *fp = file; - - debug(D_REGISTRY, "Registry: registry_machine_save('%s')", m->guid); - - int ret = fprintf(fp, "M\t%08x\t%08x\t%08x\t%s\n", - m->first_t, - m->last_t, - m->usages, - m->guid - ); - - if(ret >= 0) { - int ret2 = dictionary_get_all(m->urls, registry_machine_save_url, fp); - if(ret2 < 0) return ret2; - ret += ret2; - } - - // error handling is done at registry_save() - - return ret; -} - -static inline int registry_person_save_url(void *entry, void *file) { - PERSON_URL *pu = entry; - FILE *fp = file; - - debug(D_REGISTRY, "Registry: registry_person_save_url('%s')", pu->url->url); - - int ret = fprintf(fp, "U\t%08x\t%08x\t%08x\t%02x\t%s\t%s\t%s\n", - pu->first_t, - pu->last_t, - pu->usages, - pu->flags, - pu->machine->guid, - pu->name, - pu->url->url - ); - - // error handling is done at registry_save() - - return ret; -} - -static inline int registry_person_save(void *entry, void *file) { - PERSON *p = entry; - FILE *fp = file; - - debug(D_REGISTRY, "Registry: registry_person_save('%s')", p->guid); - - int ret = fprintf(fp, "P\t%08x\t%08x\t%08x\t%s\n", - p->first_t, - p->last_t, - p->usages, - p->guid - ); - - if(ret >= 0) { - int ret2 = dictionary_get_all(p->urls, registry_person_save_url, fp); - if (ret2 < 0) return ret2; - ret += ret2; - } - - // error handling is done at registry_save() - - return ret; -} - -int registry_save(void) { - if(!registry.enabled) return -1; - - // make sure the log is not updated - registry_log_lock(); - - if(unlikely(!registry_should_save_db())) { - registry_log_unlock(); - return -2; - } - - error_log_limit_unlimited(); - - char tmp_filename[FILENAME_MAX + 1]; - char old_filename[FILENAME_MAX + 1]; - - snprintfz(old_filename, FILENAME_MAX, "%s.old", registry.db_filename); - snprintfz(tmp_filename, FILENAME_MAX, "%s.tmp", registry.db_filename); - - debug(D_REGISTRY, "Registry: Creating file '%s'", tmp_filename); - FILE *fp = fopen(tmp_filename, "w"); - if(!fp) { - error("Registry: Cannot create file: %s", tmp_filename); - registry_log_unlock(); - error_log_limit_reset(); - return -1; - } - - // dictionary_get_all() has its own locking, so this is safe to do - debug(D_REGISTRY, "Saving all machines"); - int bytes1 = dictionary_get_all(registry.machines, registry_machine_save, fp); - if(bytes1 < 0) { - error("Registry: Cannot save registry machines - return value %d", bytes1); - fclose(fp); - registry_log_unlock(); - error_log_limit_reset(); - return bytes1; - } - debug(D_REGISTRY, "Registry: saving machines took %d bytes", bytes1); - - debug(D_REGISTRY, "Saving all persons"); - int bytes2 = dictionary_get_all(registry.persons, registry_person_save, fp); - if(bytes2 < 0) { - error("Registry: Cannot save registry persons - return value %d", bytes2); - fclose(fp); - registry_log_unlock(); - error_log_limit_reset(); - return bytes2; - } - debug(D_REGISTRY, "Registry: saving persons took %d bytes", bytes2); - - // save the totals - fprintf(fp, "T\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\t%016llx\n", - registry.persons_count, - registry.machines_count, - registry.usages_count + 1, // this is required - it is lost on db rotation - registry.urls_count, - registry.persons_urls_count, - registry.machines_urls_count - ); - - fclose(fp); - - errno = 0; - - // remove the .old db - debug(D_REGISTRY, "Registry: Removing old db '%s'", old_filename); - if(unlink(old_filename) == -1 && errno != ENOENT) - error("Registry: cannot remove old registry file '%s'", old_filename); - - // rename the db to .old - debug(D_REGISTRY, "Registry: Link current db '%s' to .old: '%s'", registry.db_filename, old_filename); - if(link(registry.db_filename, old_filename) == -1 && errno != ENOENT) - error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename, registry.db_filename); - - else { - // remove the database (it is saved in .old) - debug(D_REGISTRY, "Registry: removing db '%s'", registry.db_filename); - if (unlink(registry.db_filename) == -1 && errno != ENOENT) - error("Registry: cannot remove old registry file '%s'", registry.db_filename); - - // move the .tmp to make it active - debug(D_REGISTRY, "Registry: linking tmp db '%s' to active db '%s'", tmp_filename, registry.db_filename); - if (link(tmp_filename, registry.db_filename) == -1) { - error("Registry: cannot move file '%s' to '%s'. Saving registry DB failed!", tmp_filename, - registry.db_filename); - - // move the .old back - debug(D_REGISTRY, "Registry: linking old db '%s' to active db '%s'", old_filename, registry.db_filename); - if(link(old_filename, registry.db_filename) == -1) - error("Registry: cannot move file '%s' to '%s'. Recovering the old registry DB failed!", old_filename, registry.db_filename); - } - else { - debug(D_REGISTRY, "Registry: removing tmp db '%s'", tmp_filename); - if(unlink(tmp_filename) == -1) - error("Registry: cannot remove tmp registry file '%s'", tmp_filename); - - // it has been moved successfully - // discard the current registry log - registry_log_recreate_nolock(); - registry.log_count = 0; - } - } - - // continue operations - registry_log_unlock(); - error_log_limit_reset(); - - return -1; -} - -static inline size_t registry_load(void) { - char *s, buf[4096 + 1]; - PERSON *p = NULL; - MACHINE *m = NULL; - URL *u = NULL; - size_t line = 0; - - debug(D_REGISTRY, "Registry: loading active db from: '%s'", registry.db_filename); - FILE *fp = fopen(registry.db_filename, "r"); - if(!fp) { - error("Registry: cannot open registry file: '%s'", registry.db_filename); - return 0; - } - - size_t len = 0; - buf[4096] = '\0'; - while((s = fgets_trim_len(buf, 4096, fp, &len))) { - line++; - - debug(D_REGISTRY, "Registry: read line %zu to length %zu: %s", line, len, s); - switch(*s) { - case 'T': // totals - 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')) { - error("Registry totals line %zu is wrong (len = %zu).", line, len); - continue; - } - registry.persons_count = strtoull(&s[2], NULL, 16); - registry.machines_count = strtoull(&s[19], NULL, 16); - registry.usages_count = strtoull(&s[36], NULL, 16); - registry.urls_count = strtoull(&s[53], NULL, 16); - registry.persons_urls_count = strtoull(&s[70], NULL, 16); - registry.machines_urls_count = strtoull(&s[87], NULL, 16); - break; - - case 'P': // person - m = NULL; - // verify it is valid - if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) { - error("Registry person line %zu is wrong (len = %zu).", line, len); - continue; - } - - s[1] = s[10] = s[19] = s[28] = '\0'; - p = registry_person_allocate(&s[29], strtoul(&s[2], NULL, 16)); - p->last_t = strtoul(&s[11], NULL, 16); - p->usages = strtoul(&s[20], NULL, 16); - debug(D_REGISTRY, "Registry loaded person '%s', first: %u, last: %u, usages: %u", p->guid, p->first_t, p->last_t, p->usages); - break; - - case 'M': // machine - p = NULL; - // verify it is valid - if(unlikely(len != 65 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[65] != '\0')) { - error("Registry person line %zu is wrong (len = %zu).", line, len); - continue; - } - - s[1] = s[10] = s[19] = s[28] = '\0'; - m = registry_machine_allocate(&s[29], strtoul(&s[2], NULL, 16)); - m->last_t = strtoul(&s[11], NULL, 16); - m->usages = strtoul(&s[20], NULL, 16); - debug(D_REGISTRY, "Registry loaded machine '%s', first: %u, last: %u, usages: %u", m->guid, m->first_t, m->last_t, m->usages); - break; - - case 'U': // person URL - if(unlikely(!p)) { - error("Registry: ignoring line %zu, no person loaded: %s", line, s); - continue; - } - - // verify it is valid - if(len < 69 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t' || s[68] != '\t') { - error("Registry person URL line %zu is wrong (len = %zu).", line, len); - continue; - } - - s[1] = s[10] = s[19] = s[28] = s[31] = s[68] = '\0'; - - // skip the name to find the url - char *url = &s[69]; - while(*url && *url != '\t') url++; - if(!*url) { - error("Registry person URL line %zu does not have a url.", line); - continue; - } - *url++ = '\0'; - - // u = registry_url_allocate_nolock(url, strlen(url)); - u = registry_url_get_nolock(url, strlen(url)); - - time_t first_t = strtoul(&s[2], NULL, 16); - - m = registry_machine_find(&s[32]); - if(!m) m = registry_machine_allocate(&s[32], first_t); - - PERSON_URL *pu = registry_person_url_allocate(p, m, u, &s[69], strlen(&s[69]), first_t); - pu->last_t = strtoul(&s[11], NULL, 16); - pu->usages = strtoul(&s[20], NULL, 16); - pu->flags = strtoul(&s[29], NULL, 16); - 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); - break; - - case 'V': // machine URL - if(unlikely(!m)) { - error("Registry: ignoring line %zu, no machine loaded: %s", line, s); - continue; - } - - // verify it is valid - if(len < 32 || s[1] != '\t' || s[10] != '\t' || s[19] != '\t' || s[28] != '\t' || s[31] != '\t') { - error("Registry person URL line %zu is wrong (len = %zu).", line, len); - continue; - } - - s[1] = s[10] = s[19] = s[28] = s[31] = '\0'; - // u = registry_url_allocate_nolock(&s[32], strlen(&s[32])); - u = registry_url_get_nolock(&s[32], strlen(&s[32])); - - MACHINE_URL *mu = registry_machine_url_allocate(m, u, strtoul(&s[2], NULL, 16)); - mu->last_t = strtoul(&s[11], NULL, 16); - mu->usages = strtoul(&s[20], NULL, 16); - mu->flags = strtoul(&s[29], NULL, 16); - 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); - break; - - default: - error("Registry: ignoring line %zu of filename '%s': %s.", line, registry.db_filename, s); - break; - } - } - fclose(fp); - - return line; -} - -// ---------------------------------------------------------------------------- -// REGISTRY - -int registry_init(void) { - char filename[FILENAME_MAX + 1]; - - // registry enabled? - registry.enabled = config_get_boolean("registry", "enabled", 0); - - // pathnames - registry.pathname = config_get("registry", "registry db directory", VARLIB_DIR "/registry"); - if(mkdir(registry.pathname, 0770) == -1 && errno != EEXIST) - fatal("Cannot create directory '%s'.", registry.pathname); - - // filenames - snprintfz(filename, FILENAME_MAX, "%s/netdata.public.unique.id", registry.pathname); - registry.machine_guid_filename = config_get("registry", "netdata unique id file", filename); - registry_get_this_machine_guid(); - - snprintfz(filename, FILENAME_MAX, "%s/registry.db", registry.pathname); - registry.db_filename = config_get("registry", "registry db file", filename); - - snprintfz(filename, FILENAME_MAX, "%s/registry-log.db", registry.pathname); - registry.log_filename = config_get("registry", "registry log file", filename); - - // configuration options - registry.save_registry_every_entries = config_get_number("registry", "registry save db every new entries", 1000000); - registry.persons_expiration = config_get_number("registry", "registry expire idle persons days", 365) * 86400; - registry.registry_domain = config_get("registry", "registry domain", ""); - registry.registry_to_announce = config_get("registry", "registry to announce", "https://registry.my-netdata.io"); - registry.hostname = config_get("registry", "registry hostname", config_get("global", "hostname", localhost.hostname)); - registry.verify_cookies_redirects = config_get_boolean("registry", "verify browser cookies support", 1); - - setenv("NETDATA_REGISTRY_HOSTNAME", registry.hostname, 1); - setenv("NETDATA_REGISTRY_URL", registry.registry_to_announce, 1); - - registry.max_url_length = config_get_number("registry", "max URL length", 1024); - if(registry.max_url_length < 10) { - registry.max_url_length = 10; - config_set_number("registry", "max URL length", registry.max_url_length); - } - - registry.max_name_length = config_get_number("registry", "max URL name length", 50); - if(registry.max_name_length < 10) { - registry.max_name_length = 10; - config_set_number("registry", "max URL name length", registry.max_name_length); - } - - // initialize entries counters - registry.persons_count = 0; - registry.machines_count = 0; - registry.usages_count = 0; - registry.urls_count = 0; - registry.persons_urls_count = 0; - registry.machines_urls_count = 0; - - // initialize memory counters - registry.persons_memory = 0; - registry.machines_memory = 0; - registry.urls_memory = 0; - registry.persons_urls_memory = 0; - registry.machines_urls_memory = 0; - - // initialize locks - pthread_mutex_init(®istry.persons_lock, NULL); - pthread_mutex_init(®istry.machines_lock, NULL); - pthread_mutex_init(®istry.urls_lock, NULL); - pthread_mutex_init(®istry.person_urls_lock, NULL); - pthread_mutex_init(®istry.machine_urls_lock, NULL); - - // create dictionaries - registry.persons = dictionary_create(DICTIONARY_FLAGS); - registry.machines = dictionary_create(DICTIONARY_FLAGS); - registry.urls = dictionary_create(DICTIONARY_FLAGS); - - // load the registry database - if(registry.enabled) { - registry_log_open_nolock(); - registry_load(); - registry_log_load(); - - if(unlikely(registry_should_save_db())) - registry_save(); - } - - return 0; -} - -void registry_free(void) { - if(!registry.enabled) return; - - // we need to destroy the dictionaries ourselves - // since the dictionaries use memory we allocated - - while(registry.persons->values_index.root) { - PERSON *p = ((NAME_VALUE *)registry.persons->values_index.root)->value; - - // fprintf(stderr, "\nPERSON: '%s', first: %u, last: %u, usages: %u\n", p->guid, p->first_t, p->last_t, p->usages); - - while(p->urls->values_index.root) { - PERSON_URL *pu = ((NAME_VALUE *)p->urls->values_index.root)->value; - - // 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); - - debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", pu->url->url, p->guid); - dictionary_del(p->urls, pu->url->url); - - debug(D_REGISTRY, "Registry: unlinking url '%s' from person", pu->url->url); - registry_url_unlink_nolock(pu->url); - - debug(D_REGISTRY, "Registry: freeing person url"); - freez(pu); - } - - debug(D_REGISTRY, "Registry: deleting person '%s' from persons registry", p->guid); - dictionary_del(registry.persons, p->guid); - - debug(D_REGISTRY, "Registry: destroying URL dictionary of person '%s'", p->guid); - dictionary_destroy(p->urls); - - debug(D_REGISTRY, "Registry: freeing person '%s'", p->guid); - freez(p); - } - - while(registry.machines->values_index.root) { - MACHINE *m = ((NAME_VALUE *)registry.machines->values_index.root)->value; - - // fprintf(stderr, "\nMACHINE: '%s', first: %u, last: %u, usages: %u\n", m->guid, m->first_t, m->last_t, m->usages); - - while(m->urls->values_index.root) { - MACHINE_URL *mu = ((NAME_VALUE *)m->urls->values_index.root)->value; - - // 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); - - //debug(D_REGISTRY, "Registry: destroying persons dictionary from url '%s'", mu->url->url); - //dictionary_destroy(mu->persons); - - debug(D_REGISTRY, "Registry: deleting url '%s' from person '%s'", mu->url->url, m->guid); - dictionary_del(m->urls, mu->url->url); - - debug(D_REGISTRY, "Registry: unlinking url '%s' from machine", mu->url->url); - registry_url_unlink_nolock(mu->url); - - debug(D_REGISTRY, "Registry: freeing machine url"); - freez(mu); - } - - debug(D_REGISTRY, "Registry: deleting machine '%s' from machines registry", m->guid); - dictionary_del(registry.machines, m->guid); - - debug(D_REGISTRY, "Registry: destroying URL dictionary of machine '%s'", m->guid); - dictionary_destroy(m->urls); - - debug(D_REGISTRY, "Registry: freeing machine '%s'", m->guid); - freez(m); - } - - // and free the memory of remaining dictionary structures - - debug(D_REGISTRY, "Registry: destroying persons dictionary"); - dictionary_destroy(registry.persons); - - debug(D_REGISTRY, "Registry: destroying machines dictionary"); - dictionary_destroy(registry.machines); - - debug(D_REGISTRY, "Registry: destroying urls dictionary"); - dictionary_destroy(registry.urls); + registry_unlock(); + return 200; } // ---------------------------------------------------------------------------- @@ -1869,8 +371,8 @@ void registry_statistics(void) { rrddim_set(stm, "persons", registry.persons_memory + registry.persons_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY)); rrddim_set(stm, "machines", registry.machines_memory + registry.machines_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY)); - rrddim_set(stm, "urls", registry.urls_memory + registry.urls_count * sizeof(NAME_VALUE) + sizeof(DICTIONARY)); - rrddim_set(stm, "persons_urls", registry.persons_urls_memory + registry.persons_count * sizeof(DICTIONARY) + registry.persons_urls_count * sizeof(NAME_VALUE)); + rrddim_set(stm, "urls", registry.urls_memory); + rrddim_set(stm, "persons_urls", registry.persons_urls_memory); rrddim_set(stm, "machines_urls", registry.machines_urls_memory + registry.machines_count * sizeof(DICTIONARY) + registry.machines_urls_count * sizeof(NAME_VALUE)); rrdset_done(stm); } |