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// SPDX-License-Identifier: GPL-3.0-or-later
#include "../daemon/common.h"
#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_lock(void) {
netdata_mutex_lock(®istry.lock);
}
static inline void registry_unlock(void) {
netdata_mutex_unlock(®istry.lock);
}
// ----------------------------------------------------------------------------
// COOKIES
static void registry_set_cookie(struct web_client *w, const char *guid) {
char edate[100];
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);
snprintfz(w->cookie1, NETDATA_WEB_REQUEST_COOKIE_SIZE, NETDATA_REGISTRY_COOKIE_NAME "=%s; Expires=%s", guid, edate);
if(registry.registry_domain && registry.registry_domain[0])
snprintfz(w->cookie2, NETDATA_WEB_REQUEST_COOKIE_SIZE, 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, REGISTRY_PERSON *p) {
registry_set_cookie(w, p->guid);
}
// ----------------------------------------------------------------------------
// JSON GENERATION
static inline void registry_json_header(RRDHOST *host, 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, host->registry_hostname, host->machine_guid);
}
static inline void registry_json_footer(struct web_client *w) {
buffer_strcat(w->response.data, "\n}\n");
}
static inline int registry_json_disabled(RRDHOST *host, struct web_client *w, const char *action) {
registry_json_header(host, w, action, REGISTRY_STATUS_DISABLED);
buffer_sprintf(w->response.data, ",\n\t\"registry\": \"%s\"",
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 {
REGISTRY_PERSON *p;
REGISTRY_MACHINE *m;
struct web_client *w;
int count;
};
// callback for rendering PERSON_URLs
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;
if (!strcmp(pu->url->url,"***")) return 0;
if(unlikely(c->count++))
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->machine_name);
return 0;
}
// callback for rendering MACHINE_URLs
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;
REGISTRY_MACHINE *m = c->m;
if (!strcmp(mu->url->url,"***")) return 1;
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);
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(RRDHOST *host, struct web_client *w) {
registry_json_header(host, w, "hello", REGISTRY_STATUS_OK);
buffer_sprintf(w->response.data,
",\n\t\"registry\": \"%s\",\n\t\"cloud_base_url\": \"%s\",\n\t\"anonymous_statistics\": %s",
registry.registry_to_announce,
registry.cloud_base_url, netdata_anonymous_statistics_enabled?"true":"false");
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(RRDHOST *host, struct web_client *w, char *person_guid, char *machine_guid, char *url, char *name, time_t when) {
if(unlikely(!registry.enabled))
return registry_json_disabled(host, w, "access");
// ------------------------------------------------------------------------
// 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(host, w, "access", REGISTRY_STATUS_FAILED);
registry_json_footer(w);
registry_unlock();
return 412;
}
// set the cookie
registry_set_person_cookie(w, p);
// generate the response
registry_json_header(host, w, "access", REGISTRY_STATUS_OK);
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
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