+}
+
+static inline int web_client_process_url(RRDHOST *host, struct web_client *w, char *url);
+
+static inline int web_client_switch_host(RRDHOST *host, struct web_client *w, char *url) {
+ static uint32_t hash_localhost = 0;
+
+ if(unlikely(!hash_localhost)) {
+ hash_localhost = simple_hash("localhost");
+ }
+
+ if(host != localhost) {
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "Nesting of hosts is not allowed.");
+ return 400;
+ }
+
+ char *tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for host with name '%s'.", w->id, tok);
+
+ // copy the URL, we need it to serve files
+ w->last_url[0] = '/';
+ if(url && *url) strncpyz(&w->last_url[1], url, URL_MAX - 1);
+ else w->last_url[1] = '\0';
+
+ uint32_t hash = simple_hash(tok);
+
+ if(unlikely(hash == hash_localhost && !strcmp(tok, "localhost")))
+ return web_client_process_url(localhost, w, url);
+
+ rrd_rdlock();
+ RRDHOST *h;
+ rrdhost_foreach_read(h) {
+ if(unlikely((hash == h->hash_hostname && !strcmp(tok, h->hostname)) ||
+ (hash == h->hash_machine_guid && !strcmp(tok, h->machine_guid)))) {
+ rrd_unlock();
+ return web_client_process_url(h, w, url);
+ }
+ }
+ rrd_unlock();
+ }
+
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "This netdata does not maintain a database for host: ");
+ buffer_strcat_htmlescape(w->response.data, tok?tok:"");
+ return 404;
+}
+
+static inline int web_client_process_url(RRDHOST *host, struct web_client *w, char *url) {
+ static uint32_t
+ hash_api = 0,
+ hash_netdata_conf = 0,
+ hash_data = 0,
+ hash_datasource = 0,
+ hash_graph = 0,
+ hash_list = 0,
+ hash_all_json = 0,
+ hash_host = 0,
+ hash_stream = 0;
+
+#ifdef NETDATA_INTERNAL_CHECKS
+ static uint32_t hash_exit = 0, hash_debug = 0, hash_mirror = 0;
+#endif
+
+ if(unlikely(!hash_api)) {
+ hash_api = simple_hash("api");
+ hash_netdata_conf = simple_hash("netdata.conf");
+ hash_data = simple_hash(WEB_PATH_DATA);
+ hash_datasource = simple_hash(WEB_PATH_DATASOURCE);
+ hash_graph = simple_hash(WEB_PATH_GRAPH);
+ hash_list = simple_hash("list");
+ hash_all_json = simple_hash("all.json");
+ hash_host = simple_hash("host");
+ hash_stream = simple_hash("stream");
+#ifdef NETDATA_INTERNAL_CHECKS
+ hash_exit = simple_hash("exit");
+ hash_debug = simple_hash("debug");
+ hash_mirror = simple_hash("mirror");
+#endif
+ }
+
+ char *tok = mystrsep(&url, "/?");
+ if(likely(tok && *tok)) {
+ uint32_t hash = simple_hash(tok);
+ debug(D_WEB_CLIENT, "%llu: Processing command '%s'.", w->id, tok);
+
+ if(unlikely(hash == hash_api && strcmp(tok, "api") == 0)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: API request ...", w->id);
+ return web_client_api_request(host, w, url);
+ }
+ else if(unlikely(hash == hash_host && strcmp(tok, "host") == 0)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: host switch request ...", w->id);
+ return web_client_switch_host(host, w, url);
+ }
+ else if(unlikely(hash == hash_stream && strcmp(tok, "stream") == 0)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: stream request ...", w->id);
+ return web_client_stream_request(host, w, url);
+ }
+ else if(unlikely(hash == hash_netdata_conf && strcmp(tok, "netdata.conf") == 0)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending netdata.conf ...", w->id);
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+ config_generate(w->response.data, 0);
+ return 200;
+ }
+ else if(unlikely(hash == hash_data && strcmp(tok, WEB_PATH_DATA) == 0)) { // "data"
+ // the client is requesting rrd data -- OLD API
+ return web_client_api_old_data_request(host, w, url, DATASOURCE_JSON);
+ }
+ else if(unlikely(hash == hash_datasource && strcmp(tok, WEB_PATH_DATASOURCE) == 0)) { // "datasource"
+ // the client is requesting google datasource -- OLD API
+ return web_client_api_old_data_request(host, w, url, DATASOURCE_DATATABLE_JSONP);
+ }
+ else if(unlikely(hash == hash_graph && strcmp(tok, WEB_PATH_GRAPH) == 0)) { // "graph"
+ // the client is requesting an rrd graph -- OLD API
+
+ // get the name of the data to show
+ tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
+
+ // do we have such a data set?
+ RRDSET *st = rrdset_find_byname(host, tok);
+ if(!st) st = rrdset_find(host, tok);
+ if(!st) {
+ // we don't have it
+ // try to send a file with that name
+ buffer_flush(w->response.data);
+ return mysendfile(w, tok);
+ }
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending %s.json of RRD_STATS...", w->id, st->name);
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ buffer_flush(w->response.data);
+ rrd_stats_graph_json(st, url, w->response.data);
+ return 200;
+ }
+
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "Graph name?\r\n");
+ return 400;
+ }
+ else if(unlikely(hash == hash_list && strcmp(tok, "list") == 0)) {
+ // OLD API
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending list of RRD_STATS...", w->id);
+
+ buffer_flush(w->response.data);
+ RRDSET *st;
+
+ rrdhost_rdlock(host);
+ rrdset_foreach_read(st, host) buffer_sprintf(w->response.data, "%s\n", st->name);
+ rrdhost_unlock(host);
+
+ return 200;
+ }
+ else if(unlikely(hash == hash_all_json && strcmp(tok, "all.json") == 0)) {
+ // OLD API
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending JSON list of all monitors of RRD_STATS...", w->id);
+
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ buffer_flush(w->response.data);
+ rrd_stats_all_json(host, w->response.data);
+ return 200;
+ }
+#ifdef NETDATA_INTERNAL_CHECKS
+ else if(unlikely(hash == hash_exit && strcmp(tok, "exit") == 0)) {
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+
+ if(!netdata_exit)
+ buffer_strcat(w->response.data, "ok, will do...");
+ else
+ buffer_strcat(w->response.data, "I am doing it already");
+
+ error("web request to exit received.");
+ netdata_cleanup_and_exit(0);
+ return 200;
+ }
+ else if(unlikely(hash == hash_debug && strcmp(tok, "debug") == 0)) {
+ buffer_flush(w->response.data);
+
+ // get the name of the data to show
+ tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
+
+ // do we have such a data set?
+ RRDSET *st = rrdset_find_byname(host, tok);
+ if(!st) st = rrdset_find(host, tok);
+ if(!st) {
+ buffer_strcat(w->response.data, "Chart is not found: ");
+ buffer_strcat_htmlescape(w->response.data, tok);
+ debug(D_WEB_CLIENT_ACCESS, "%llu: %s is not found.", w->id, tok);
+ return 404;
+ }
+
+ debug_flags |= D_RRD_STATS;
+
+ if(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))
+ rrdset_flag_clear(st, RRDSET_FLAG_DEBUG);
+ else
+ rrdset_flag_set(st, RRDSET_FLAG_DEBUG);
+
+ buffer_sprintf(w->response.data, "Chart has now debug %s: ", rrdset_flag_check(st, RRDSET_FLAG_DEBUG)?"enabled":"disabled");
+ buffer_strcat_htmlescape(w->response.data, tok);
+ debug(D_WEB_CLIENT_ACCESS, "%llu: debug for %s is %s.", w->id, tok, rrdset_flag_check(st, RRDSET_FLAG_DEBUG)?"enabled":"disabled");
+ return 200;
+ }
+
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "debug which chart?\r\n");
+ return 400;
+ }
+ else if(unlikely(hash == hash_mirror && strcmp(tok, "mirror") == 0)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Mirroring...", w->id);
+
+ // replace the zero bytes with spaces
+ buffer_char_replace(w->response.data, '\0', ' ');
+
+ // just leave the buffer as is
+ // it will be copied back to the client
+
+ return 200;
+ }
+#endif /* NETDATA_INTERNAL_CHECKS */
+ }
+
+ char filename[FILENAME_MAX+1];
+ url = filename;
+ strncpyz(filename, w->last_url, FILENAME_MAX);
+ tok = mystrsep(&url, "?");
+ buffer_flush(w->response.data);
+ return mysendfile(w, (tok && *tok)?tok:"/");
+}
+
+void web_client_process_request(struct web_client *w) {
+
+ // start timing us
+ now_realtime_timeval(&w->tv_in);
+
+ switch(http_request_validate(w)) {
+ case HTTP_VALIDATION_OK:
+ if(unlikely(w->mode == WEB_CLIENT_MODE_OPTIONS)) {
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "OK");
+ w->response.code = 200;
+ }
+ else
+ w->response.code = web_client_process_url(localhost, w, w->decoded_url);
+ break;
+
+ case HTTP_VALIDATION_INCOMPLETE:
+ if(w->response.data->len > TOO_BIG_REQUEST) {
+ strcpy(w->last_url, "too big request");
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Received request is too big (%zu bytes).", w->id, w->response.data->len);
+
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Received request is too big (%zu bytes).\r\n", w->response.data->len);
+ w->response.code = 400;
+ }
+ else {
+ // wait for more data
+ return;
+ }
+ break;
+
+ case HTTP_VALIDATION_NOT_SUPPORTED:
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Cannot understand '%s'.", w->id, w->response.data->buffer);
+
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "I don't understand you...\r\n");
+ w->response.code = 400;
+ break;
+ }
+
+ // keep track of the time we done processing
+ now_realtime_timeval(&w->tv_ready);
+
+ w->response.sent = 0;
+
+ // set a proper last modified date
+ if(unlikely(!w->response.data->date))
+ w->response.data->date = w->tv_ready.tv_sec;
+
+ web_client_send_http_header(w);