3 #define INITIAL_WEB_DATA_LENGTH 16384
4 #define WEB_REQUEST_LENGTH 16384
5 #define TOO_BIG_REQUEST 16384
7 int web_client_timeout = DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS;
8 int web_donotrack_comply = 0;
10 #ifdef NETDATA_WITH_ZLIB
11 int web_enable_gzip = 1, web_gzip_level = 3, web_gzip_strategy = Z_DEFAULT_STRATEGY;
12 #endif /* NETDATA_WITH_ZLIB */
14 struct web_client *web_clients = NULL;
15 unsigned long long web_clients_count = 0;
17 inline int web_client_crock_socket(struct web_client *w) {
19 if(likely(!w->tcp_cork && w->ofd != -1)) {
21 if(unlikely(setsockopt(w->ofd, IPPROTO_TCP, TCP_CORK, (char *) &w->tcp_cork, sizeof(int)) != 0)) {
22 error("%llu: failed to enable TCP_CORK on socket.", w->id);
32 inline int web_client_uncrock_socket(struct web_client *w) {
34 if(likely(w->tcp_cork && w->ofd != -1)) {
36 if(unlikely(setsockopt(w->ofd, IPPROTO_TCP, TCP_CORK, (char *) &w->tcp_cork, sizeof(int)) != 0)) {
37 error("%llu: failed to disable TCP_CORK on socket.", w->id);
47 struct web_client *web_client_create(int listener)
51 w = callocz(1, sizeof(struct web_client));
52 w->id = ++web_clients_count;
53 w->mode = WEB_CLIENT_MODE_NORMAL;
56 struct sockaddr *sadr;
59 sadr = (struct sockaddr*) &w->clientaddr;
60 addrlen = sizeof(w->clientaddr);
62 w->ifd = accept4(listener, sadr, &addrlen, SOCK_NONBLOCK);
64 error("%llu: Cannot accept new incoming connection.", w->id);
70 if(getnameinfo(sadr, addrlen, w->client_ip, NI_MAXHOST, w->client_port, NI_MAXSERV, NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
71 error("Cannot getnameinfo() on received client connection.");
72 strncpyz(w->client_ip, "UNKNOWN", NI_MAXHOST);
73 strncpyz(w->client_port, "UNKNOWN", NI_MAXSERV);
75 w->client_ip[NI_MAXHOST] = '\0';
76 w->client_port[NI_MAXSERV] = '\0';
78 switch(sadr->sa_family) {
80 debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv4 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
84 if(strncmp(w->client_ip, "::ffff:", 7) == 0) {
85 memmove(w->client_ip, &w->client_ip[7], strlen(&w->client_ip[7]) + 1);
86 debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv4 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
89 debug(D_WEB_CLIENT_ACCESS, "%llu: New IPv6 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
93 debug(D_WEB_CLIENT_ACCESS, "%llu: New UNKNOWN web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
98 if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0)
99 error("%llu: failed to enable TCP_NODELAY on socket.", w->id);
102 if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0)
103 error("%llu: Cannot set SO_KEEPALIVE on socket.", w->id);
106 w->response.data = buffer_create(INITIAL_WEB_DATA_LENGTH);
107 w->response.header = buffer_create(HTTP_RESPONSE_HEADER_SIZE);
108 w->response.header_output = buffer_create(HTTP_RESPONSE_HEADER_SIZE);
112 if(web_clients) web_clients->prev = w;
113 w->next = web_clients;
116 web_client_connected();
121 void web_client_reset(struct web_client *w) {
122 web_client_uncrock_socket(w);
124 debug(D_WEB_CLIENT, "%llu: Reseting client.", w->id);
126 if(likely(w->last_url[0])) {
128 gettimeofday(&tv, NULL);
130 size_t size = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
132 #ifdef NETDATA_WITH_ZLIB
133 if(likely(w->response.zoutput)) sent = (size_t)w->response.zstream.total_out;
136 // --------------------------------------------------------------------
139 finished_web_request_statistics(usec_dt(&tv, &w->tv_in),
140 w->stats_received_bytes,
145 w->stats_received_bytes = 0;
146 w->stats_sent_bytes = 0;
149 // --------------------------------------------------------------------
152 log_access("%llu: (sent/all = %zu/%zu bytes %0.0f%%, prep/sent/total = %0.2f/%0.2f/%0.2f ms) %s: %d '%s'",
154 sent, size, -((size > 0) ? ((size - sent) / (double) size * 100.0) : 0.0),
155 usec_dt(&w->tv_ready, &w->tv_in) / 1000.0,
156 usec_dt(&tv, &w->tv_ready) / 1000.0,
157 usec_dt(&tv, &w->tv_in) / 1000.0,
158 (w->mode == WEB_CLIENT_MODE_FILECOPY) ? "filecopy" : ((w->mode == WEB_CLIENT_MODE_OPTIONS)
159 ? "options" : "data"),
165 if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY)) {
166 if(w->ifd != w->ofd) {
167 debug(D_WEB_CLIENT, "%llu: Closing filecopy input file descriptor %d.", w->id, w->ifd);
168 if(w->ifd != -1) close(w->ifd);
173 w->last_url[0] = '\0';
174 w->cookie1[0] = '\0';
175 w->cookie2[0] = '\0';
179 w->mode = WEB_CLIENT_MODE_NORMAL;
183 w->tracking_required = 0;
185 w->decoded_url[0] = '\0';
187 buffer_reset(w->response.header_output);
188 buffer_reset(w->response.header);
189 buffer_reset(w->response.data);
190 w->response.rlen = 0;
191 w->response.sent = 0;
192 w->response.code = 0;
197 w->response.zoutput = 0;
199 // if we had enabled compression, release it
200 #ifdef NETDATA_WITH_ZLIB
201 if(w->response.zinitialized) {
202 debug(D_DEFLATE, "%llu: Freeing compression resources.", w->id);
203 deflateEnd(&w->response.zstream);
204 w->response.zsent = 0;
205 w->response.zhave = 0;
206 w->response.zstream.avail_in = 0;
207 w->response.zstream.avail_out = 0;
208 w->response.zstream.total_in = 0;
209 w->response.zstream.total_out = 0;
210 w->response.zinitialized = 0;
212 #endif // NETDATA_WITH_ZLIB
215 struct web_client *web_client_free(struct web_client *w) {
218 struct web_client *n = w->next;
219 if(w == web_clients) web_clients = n;
221 debug(D_WEB_CLIENT_ACCESS, "%llu: Closing web client from %s port %s.", w->id, w->client_ip, w->client_port);
223 if(w->prev) w->prev->next = w->next;
224 if(w->next) w->next->prev = w->prev;
225 if(w->response.header_output) buffer_free(w->response.header_output);
226 if(w->response.header) buffer_free(w->response.header);
227 if(w->response.data) buffer_free(w->response.data);
228 if(w->ifd != -1) close(w->ifd);
229 if(w->ofd != -1 && w->ofd != w->ifd) close(w->ofd);
232 web_client_disconnected();
237 uid_t web_files_uid(void) {
238 static char *web_owner = NULL;
239 static uid_t owner_uid = 0;
241 if(unlikely(!web_owner)) {
242 web_owner = config_get("global", "web files owner", config_get("global", "run as user", ""));
243 if(!web_owner || !*web_owner)
244 owner_uid = geteuid();
246 // getpwnam() is not thread safe,
247 // but we have called this function once
248 // while single threaded
249 struct passwd *pw = getpwnam(web_owner);
251 error("User '%s' is not present. Ignoring option.", web_owner);
252 owner_uid = geteuid();
255 debug(D_WEB_CLIENT, "Web files owner set to %s.", web_owner);
256 owner_uid = pw->pw_uid;
264 gid_t web_files_gid(void) {
265 static char *web_group = NULL;
266 static gid_t owner_gid = 0;
268 if(unlikely(!web_group)) {
269 web_group = config_get("global", "web files group", config_get("global", "web files owner", ""));
270 if(!web_group || !*web_group)
271 owner_gid = getegid();
273 // getgrnam() is not thread safe,
274 // but we have called this function once
275 // while single threaded
276 struct group *gr = getgrnam(web_group);
278 error("Group '%s' is not present. Ignoring option.", web_group);
279 owner_gid = getegid();
282 debug(D_WEB_CLIENT, "Web files group set to %s.", web_group);
283 owner_gid = gr->gr_gid;
291 int mysendfile(struct web_client *w, char *filename)
293 static char *web_dir = NULL;
295 // initialize our static data
296 if(unlikely(!web_dir)) web_dir = config_get("global", "web files directory", WEB_DIR);
298 debug(D_WEB_CLIENT, "%llu: Looking for file '%s/%s'", w->id, web_dir, filename);
300 // skip leading slashes
301 while (*filename == '/') filename++;
303 // if the filename contain known paths, skip them
304 if(strncmp(filename, WEB_PATH_FILE "/", strlen(WEB_PATH_FILE) + 1) == 0)
305 filename = &filename[strlen(WEB_PATH_FILE) + 1];
308 for(s = filename; *s ;s++) {
309 if( !isalnum(*s) && *s != '/' && *s != '.' && *s != '-' && *s != '_') {
310 debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not acceptable.", w->id, filename);
311 buffer_sprintf(w->response.data, "File '%s' cannot be served. Filename contains invalid character '%c'", filename, *s);
316 // if the filename contains a .. refuse to serve it
317 if(strstr(filename, "..") != 0) {
318 debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not acceptable.", w->id, filename);
319 buffer_sprintf(w->response.data, "File '%s' cannot be served. Relative filenames with '..' in them are not supported.", filename);
324 char webfilename[FILENAME_MAX + 1];
325 snprintfz(webfilename, FILENAME_MAX, "%s/%s", web_dir, filename);
327 // check if the file exists
329 if(lstat(webfilename, &stat) != 0) {
330 debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not found.", w->id, webfilename);
331 buffer_sprintf(w->response.data, "File '%s' does not exist, or is not accessible.", webfilename);
335 // check if the file is owned by expected user
336 if(stat.st_uid != web_files_uid()) {
337 error("%llu: File '%s' is owned by user %u (expected user %u). Access Denied.", w->id, webfilename, stat.st_uid, web_files_uid());
338 buffer_sprintf(w->response.data, "Access to file '%s' is not permitted.", webfilename);
342 // check if the file is owned by expected group
343 if(stat.st_gid != web_files_gid()) {
344 error("%llu: File '%s' is owned by group %u (expected group %u). Access Denied.", w->id, webfilename, stat.st_gid, web_files_gid());
345 buffer_sprintf(w->response.data, "Access to file '%s' is not permitted.", webfilename);
349 if((stat.st_mode & S_IFMT) == S_IFDIR) {
350 snprintfz(webfilename, FILENAME_MAX, "%s/index.html", filename);
351 return mysendfile(w, webfilename);
354 if((stat.st_mode & S_IFMT) != S_IFREG) {
355 error("%llu: File '%s' is not a regular file. Access Denied.", w->id, webfilename);
356 buffer_sprintf(w->response.data, "Access to file '%s' is not permitted.", webfilename);
361 w->ifd = open(webfilename, O_NONBLOCK, O_RDONLY);
365 if(errno == EBUSY || errno == EAGAIN) {
366 error("%llu: File '%s' is busy, sending 307 Moved Temporarily to force retry.", w->id, webfilename);
367 buffer_sprintf(w->response.header, "Location: /" WEB_PATH_FILE "/%s\r\n", filename);
368 buffer_sprintf(w->response.data, "The file '%s' is currently busy. Please try again later.", webfilename);
372 error("%llu: Cannot open file '%s'.", w->id, webfilename);
373 buffer_sprintf(w->response.data, "Cannot open file '%s'.", webfilename);
377 if(fcntl(w->ifd, F_SETFL, O_NONBLOCK) < 0)
378 error("%llu: Cannot set O_NONBLOCK on file '%s'.", w->id, webfilename);
380 // pick a Content-Type for the file
381 if(strstr(filename, ".html") != NULL) w->response.data->contenttype = CT_TEXT_HTML;
382 else if(strstr(filename, ".js") != NULL) w->response.data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
383 else if(strstr(filename, ".css") != NULL) w->response.data->contenttype = CT_TEXT_CSS;
384 else if(strstr(filename, ".xml") != NULL) w->response.data->contenttype = CT_TEXT_XML;
385 else if(strstr(filename, ".xsl") != NULL) w->response.data->contenttype = CT_TEXT_XSL;
386 else if(strstr(filename, ".txt") != NULL) w->response.data->contenttype = CT_TEXT_PLAIN;
387 else if(strstr(filename, ".svg") != NULL) w->response.data->contenttype = CT_IMAGE_SVG_XML;
388 else if(strstr(filename, ".ttf") != NULL) w->response.data->contenttype = CT_APPLICATION_X_FONT_TRUETYPE;
389 else if(strstr(filename, ".otf") != NULL) w->response.data->contenttype = CT_APPLICATION_X_FONT_OPENTYPE;
390 else if(strstr(filename, ".woff2")!= NULL) w->response.data->contenttype = CT_APPLICATION_FONT_WOFF2;
391 else if(strstr(filename, ".woff") != NULL) w->response.data->contenttype = CT_APPLICATION_FONT_WOFF;
392 else if(strstr(filename, ".eot") != NULL) w->response.data->contenttype = CT_APPLICATION_VND_MS_FONTOBJ;
393 else if(strstr(filename, ".png") != NULL) w->response.data->contenttype = CT_IMAGE_PNG;
394 else if(strstr(filename, ".jpg") != NULL) w->response.data->contenttype = CT_IMAGE_JPG;
395 else if(strstr(filename, ".jpeg") != NULL) w->response.data->contenttype = CT_IMAGE_JPG;
396 else if(strstr(filename, ".gif") != NULL) w->response.data->contenttype = CT_IMAGE_GIF;
397 else if(strstr(filename, ".bmp") != NULL) w->response.data->contenttype = CT_IMAGE_BMP;
398 else if(strstr(filename, ".ico") != NULL) w->response.data->contenttype = CT_IMAGE_XICON;
399 else if(strstr(filename, ".icns") != NULL) w->response.data->contenttype = CT_IMAGE_ICNS;
400 else w->response.data->contenttype = CT_APPLICATION_OCTET_STREAM;
402 debug(D_WEB_CLIENT_ACCESS, "%llu: Sending file '%s' (%ld bytes, ifd %d, ofd %d).", w->id, webfilename, stat.st_size, w->ifd, w->ofd);
404 w->mode = WEB_CLIENT_MODE_FILECOPY;
407 buffer_flush(w->response.data);
408 w->response.rlen = stat.st_size;
409 w->response.data->date = stat.st_mtim.tv_sec;
415 #ifdef NETDATA_WITH_ZLIB
416 void web_client_enable_deflate(struct web_client *w, int gzip) {
417 if(unlikely(w->response.zinitialized)) {
418 error("%llu: Compression has already be initialized for this client.", w->id);
422 if(unlikely(w->response.sent)) {
423 error("%llu: Cannot enable compression in the middle of a conversation.", w->id);
427 w->response.zstream.zalloc = Z_NULL;
428 w->response.zstream.zfree = Z_NULL;
429 w->response.zstream.opaque = Z_NULL;
431 w->response.zstream.next_in = (Bytef *)w->response.data->buffer;
432 w->response.zstream.avail_in = 0;
433 w->response.zstream.total_in = 0;
435 w->response.zstream.next_out = w->response.zbuffer;
436 w->response.zstream.avail_out = 0;
437 w->response.zstream.total_out = 0;
439 w->response.zstream.zalloc = Z_NULL;
440 w->response.zstream.zfree = Z_NULL;
441 w->response.zstream.opaque = Z_NULL;
443 // if(deflateInit(&w->response.zstream, Z_DEFAULT_COMPRESSION) != Z_OK) {
444 // error("%llu: Failed to initialize zlib. Proceeding without compression.", w->id);
448 // Select GZIP compression: windowbits = 15 + 16 = 31
449 if(deflateInit2(&w->response.zstream, web_gzip_level, Z_DEFLATED, 15 + ((gzip)?16:0), 8, web_gzip_strategy) != Z_OK) {
450 error("%llu: Failed to initialize zlib. Proceeding without compression.", w->id);
454 w->response.zsent = 0;
455 w->response.zoutput = 1;
456 w->response.zinitialized = 1;
458 debug(D_DEFLATE, "%llu: Initialized compression.", w->id);
460 #endif // NETDATA_WITH_ZLIB
462 void buffer_data_options2string(BUFFER *wb, uint32_t options) {
465 if(options & RRDR_OPTION_NONZERO) {
466 if(count++) buffer_strcat(wb, " ");
467 buffer_strcat(wb, "nonzero");
470 if(options & RRDR_OPTION_REVERSED) {
471 if(count++) buffer_strcat(wb, " ");
472 buffer_strcat(wb, "flip");
475 if(options & RRDR_OPTION_JSON_WRAP) {
476 if(count++) buffer_strcat(wb, " ");
477 buffer_strcat(wb, "jsonwrap");
480 if(options & RRDR_OPTION_MIN2MAX) {
481 if(count++) buffer_strcat(wb, " ");
482 buffer_strcat(wb, "min2max");
485 if(options & RRDR_OPTION_MILLISECONDS) {
486 if(count++) buffer_strcat(wb, " ");
487 buffer_strcat(wb, "ms");
490 if(options & RRDR_OPTION_ABSOLUTE) {
491 if(count++) buffer_strcat(wb, " ");
492 buffer_strcat(wb, "abs");
495 if(options & RRDR_OPTION_SECONDS) {
496 if(count++) buffer_strcat(wb, " ");
497 buffer_strcat(wb, "seconds");
500 if(options & RRDR_OPTION_NULL2ZERO) {
501 if(count++) buffer_strcat(wb, " ");
502 buffer_strcat(wb, "null2zero");
505 if(options & RRDR_OPTION_OBJECTSROWS) {
506 if(count++) buffer_strcat(wb, " ");
507 buffer_strcat(wb, "objectrows");
510 if(options & RRDR_OPTION_GOOGLE_JSON) {
511 if(count++) buffer_strcat(wb, " ");
512 buffer_strcat(wb, "google_json");
515 if(options & RRDR_OPTION_PERCENTAGE) {
516 if(count++) buffer_strcat(wb, " ");
517 buffer_strcat(wb, "percentage");
520 if(options & RRDR_OPTION_NOT_ALIGNED) {
521 if(count++) buffer_strcat(wb, " ");
522 buffer_strcat(wb, "unaligned");
526 uint32_t web_client_api_request_v1_data_options(char *o)
528 uint32_t ret = 0x00000000;
531 while(o && *o && (tok = mystrsep(&o, ", |"))) {
534 if(!strcmp(tok, "nonzero"))
535 ret |= RRDR_OPTION_NONZERO;
536 else if(!strcmp(tok, "flip") || !strcmp(tok, "reversed") || !strcmp(tok, "reverse"))
537 ret |= RRDR_OPTION_REVERSED;
538 else if(!strcmp(tok, "jsonwrap"))
539 ret |= RRDR_OPTION_JSON_WRAP;
540 else if(!strcmp(tok, "min2max"))
541 ret |= RRDR_OPTION_MIN2MAX;
542 else if(!strcmp(tok, "ms") || !strcmp(tok, "milliseconds"))
543 ret |= RRDR_OPTION_MILLISECONDS;
544 else if(!strcmp(tok, "abs") || !strcmp(tok, "absolute") || !strcmp(tok, "absolute_sum") || !strcmp(tok, "absolute-sum"))
545 ret |= RRDR_OPTION_ABSOLUTE;
546 else if(!strcmp(tok, "seconds"))
547 ret |= RRDR_OPTION_SECONDS;
548 else if(!strcmp(tok, "null2zero"))
549 ret |= RRDR_OPTION_NULL2ZERO;
550 else if(!strcmp(tok, "objectrows"))
551 ret |= RRDR_OPTION_OBJECTSROWS;
552 else if(!strcmp(tok, "google_json"))
553 ret |= RRDR_OPTION_GOOGLE_JSON;
554 else if(!strcmp(tok, "percentage"))
555 ret |= RRDR_OPTION_PERCENTAGE;
556 else if(!strcmp(tok, "unaligned"))
557 ret |= RRDR_OPTION_NOT_ALIGNED;
563 uint32_t web_client_api_request_v1_data_format(char *name)
565 if(!strcmp(name, DATASOURCE_FORMAT_DATATABLE_JSON)) // datatable
566 return DATASOURCE_DATATABLE_JSON;
568 else if(!strcmp(name, DATASOURCE_FORMAT_DATATABLE_JSONP)) // datasource
569 return DATASOURCE_DATATABLE_JSONP;
571 else if(!strcmp(name, DATASOURCE_FORMAT_JSON)) // json
572 return DATASOURCE_JSON;
574 else if(!strcmp(name, DATASOURCE_FORMAT_JSONP)) // jsonp
575 return DATASOURCE_JSONP;
577 else if(!strcmp(name, DATASOURCE_FORMAT_SSV)) // ssv
578 return DATASOURCE_SSV;
580 else if(!strcmp(name, DATASOURCE_FORMAT_CSV)) // csv
581 return DATASOURCE_CSV;
583 else if(!strcmp(name, DATASOURCE_FORMAT_TSV) || !strcmp(name, "tsv-excel")) // tsv
584 return DATASOURCE_TSV;
586 else if(!strcmp(name, DATASOURCE_FORMAT_HTML)) // html
587 return DATASOURCE_HTML;
589 else if(!strcmp(name, DATASOURCE_FORMAT_JS_ARRAY)) // array
590 return DATASOURCE_JS_ARRAY;
592 else if(!strcmp(name, DATASOURCE_FORMAT_SSV_COMMA)) // ssvcomma
593 return DATASOURCE_SSV_COMMA;
595 else if(!strcmp(name, DATASOURCE_FORMAT_CSV_JSON_ARRAY)) // csvjsonarray
596 return DATASOURCE_CSV_JSON_ARRAY;
598 return DATASOURCE_JSON;
601 uint32_t web_client_api_request_v1_data_google_format(char *name)
603 if(!strcmp(name, "json"))
604 return DATASOURCE_DATATABLE_JSONP;
606 else if(!strcmp(name, "html"))
607 return DATASOURCE_HTML;
609 else if(!strcmp(name, "csv"))
610 return DATASOURCE_CSV;
612 else if(!strcmp(name, "tsv-excel"))
613 return DATASOURCE_TSV;
615 return DATASOURCE_JSON;
618 const char *group_method2string(int group) {
620 case GROUP_UNDEFINED:
635 case GROUP_INCREMENTAL_SUM:
636 return "incremental-sum";
639 return "unknown-group-method";
643 int web_client_api_request_v1_data_group(char *name, int def)
645 if(!strcmp(name, "average"))
646 return GROUP_AVERAGE;
648 else if(!strcmp(name, "min"))
651 else if(!strcmp(name, "max"))
654 else if(!strcmp(name, "sum"))
657 else if(!strcmp(name, "incremental-sum"))
658 return GROUP_INCREMENTAL_SUM;
663 int web_client_api_request_v1_alarms(struct web_client *w, char *url)
668 char *value = mystrsep(&url, "?&[]");
669 if (!value || !*value) continue;
671 if(!strcmp(value, "all")) all = 1;
672 else if(!strcmp(value, "active")) all = 0;
675 buffer_flush(w->response.data);
676 w->response.data->contenttype = CT_APPLICATION_JSON;
677 health_alarms2json(&localhost, w->response.data, all);
681 int web_client_api_request_v1_alarm_log(struct web_client *w, char *url)
685 buffer_flush(w->response.data);
686 w->response.data->contenttype = CT_APPLICATION_JSON;
687 health_alarm_log2json(&localhost, w->response.data);
691 int web_client_api_request_v1_charts(struct web_client *w, char *url)
695 buffer_flush(w->response.data);
696 w->response.data->contenttype = CT_APPLICATION_JSON;
697 rrd_stats_api_v1_charts(w->response.data);
701 int web_client_api_request_v1_chart(struct web_client *w, char *url)
706 buffer_flush(w->response.data);
709 char *value = mystrsep(&url, "?&[]");
710 if(!value || !*value) continue;
712 char *name = mystrsep(&value, "=");
713 if(!name || !*name) continue;
714 if(!value || !*value) continue;
716 // name and value are now the parameters
717 // they are not null and not empty
719 if(!strcmp(name, "chart")) chart = value;
721 /// buffer_sprintf(w->response.data, "Unknown parameter '%s' in request.", name);
726 if(!chart || !*chart) {
727 buffer_sprintf(w->response.data, "No chart id is given at the request.");
731 RRDSET *st = rrdset_find(chart);
732 if(!st) st = rrdset_find_byname(chart);
734 buffer_sprintf(w->response.data, "Chart '%s' is not found.", chart);
739 w->response.data->contenttype = CT_APPLICATION_JSON;
740 rrd_stats_api_v1_chart(st, w->response.data);
747 int web_client_api_request_v1_badge(struct web_client *w, char *url) {
749 buffer_flush(w->response.data);
751 w->response.data->options |= WB_CONTENT_NO_CACHEABLE;
753 BUFFER *dimensions = NULL;
755 const char *chart = NULL
759 , *multiply_str = NULL
763 , *label_color = NULL
764 , *value_color = NULL
765 , *refresh_str = NULL
766 , *precision_str = NULL
769 int group = GROUP_AVERAGE;
770 uint32_t options = 0x00000000;
773 char *value = mystrsep(&url, "/?&[]");
774 if(!value || !*value) continue;
776 char *name = mystrsep(&value, "=");
777 if(!name || !*name) continue;
778 if(!value || !*value) continue;
780 debug(D_WEB_CLIENT, "%llu: API v1 badge.svg query param '%s' with value '%s'", w->id, name, value);
782 // name and value are now the parameters
783 // they are not null and not empty
785 if(!strcmp(name, "chart")) chart = value;
786 else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) {
788 dimensions = buffer_create(100);
790 buffer_strcat(dimensions, "|");
791 buffer_strcat(dimensions, value);
793 else if(!strcmp(name, "after")) after_str = value;
794 else if(!strcmp(name, "before")) before_str = value;
795 else if(!strcmp(name, "points")) points_str = value;
796 else if(!strcmp(name, "group")) {
797 group = web_client_api_request_v1_data_group(value, GROUP_AVERAGE);
799 else if(!strcmp(name, "options")) {
800 options |= web_client_api_request_v1_data_options(value);
802 else if(!strcmp(name, "label")) label = value;
803 else if(!strcmp(name, "units")) units = value;
804 else if(!strcmp(name, "label_color")) label_color = value;
805 else if(!strcmp(name, "value_color")) value_color = value;
806 else if(!strcmp(name, "multiply")) multiply_str = value;
807 else if(!strcmp(name, "divide")) divide_str = value;
808 else if(!strcmp(name, "refresh")) refresh_str = value;
809 else if(!strcmp(name, "precision")) precision_str = value;
810 else if(!strcmp(name, "alarm")) alarm = value;
813 if(!chart || !*chart) {
814 buffer_sprintf(w->response.data, "No chart id is given at the request.");
818 RRDSET *st = rrdset_find(chart);
819 if(!st) st = rrdset_find_byname(chart);
821 buffer_svg(w->response.data, "chart not found", 0, "", NULL, NULL, 1, -1);
828 rc = rrdcalc_find(st, alarm);
830 buffer_svg(w->response.data, "alarm not found", 0, "", NULL, NULL, 1, -1);
836 long long multiply = (multiply_str && *multiply_str )?atol(multiply_str):1;
837 long long divide = (divide_str && *divide_str )?atol(divide_str):1;
838 long long before = (before_str && *before_str )?atol(before_str):0;
839 long long after = (after_str && *after_str )?atol(after_str):-st->update_every;
840 int points = (points_str && *points_str )?atoi(points_str):1;
841 int precision = (precision_str && *precision_str)?atoi(precision_str):-1;
843 if(!multiply) multiply = 1;
844 if(!divide) divide = 1;
847 if(refresh_str && *refresh_str) {
848 if(!strcmp(refresh_str, "auto")) {
849 if(rc) refresh = rc->update_every;
850 else if(options & RRDR_OPTION_NOT_ALIGNED)
851 refresh = st->update_every;
853 refresh = (before - after);
854 if(refresh < 0) refresh = -refresh;
858 refresh = atoi(refresh_str);
859 if(refresh < 0) refresh = -refresh;
865 char *s = (char *)alarm;
867 if(*s == '_') *s = ' ';
872 else if(dimensions) {
873 const char *dim = buffer_tostring(dimensions);
874 if(*dim == '|') dim++;
887 else if(options & RRDR_OPTION_PERCENTAGE)
893 debug(D_WEB_CLIENT, "%llu: API command 'badge.svg' for chart '%s', alarm '%s', dimensions '%s', after '%lld', before '%lld', points '%d', group '%d', options '0x%08x'"
897 , (dimensions)?buffer_tostring(dimensions):""
906 calculated_number n = rc->value;
907 if(isnan(n) || isinf(n)) n = 0;
910 buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh);
914 case RRDCALC_STATUS_CRITICAL:
918 case RRDCALC_STATUS_WARNING:
919 value_color = "orange";
922 case RRDCALC_STATUS_CLEAR:
923 value_color = "brightgreen";
926 case RRDCALC_STATUS_UNDEFINED:
927 value_color = "lightgrey";
930 case RRDCALC_STATUS_UNINITIALIZED:
931 value_color = "#000";
935 value_color = "grey";
940 buffer_svg(w->response.data, label, rc->value * multiply / divide, units, label_color, value_color, 0, precision);
944 time_t latest_timestamp = 0;
945 int value_is_null = 1;
946 calculated_number n = 0;
949 // if the collected value is too old, don't calculate its value
950 if (rrdset_last_entry_t(st) >= (time(NULL) - (st->update_every * st->gap_when_lost_iterations_above)))
951 ret = rrd2value(st, w->response.data, &n, (dimensions) ? buffer_tostring(dimensions) : NULL, points, after,
952 before, group, options, NULL, &latest_timestamp, &value_is_null);
954 // if the value cannot be calculated, show empty badge
960 else if (refresh > 0)
961 buffer_sprintf(w->response.header, "Refresh: %d\r\n", refresh);
964 buffer_svg(w->response.data, label, n * multiply / divide, units, label_color, value_color, value_is_null,
970 buffer_free(dimensions);
974 // returns the HTTP code
975 int web_client_api_request_v1_data(struct web_client *w, char *url)
977 debug(D_WEB_CLIENT, "%llu: API v1 data with URL '%s'", w->id, url);
980 BUFFER *dimensions = NULL;
982 buffer_flush(w->response.data);
984 char *google_version = "0.6",
987 *google_out = "json",
988 *responseHandler = NULL,
991 time_t last_timestamp_in_data = 0, google_timestamp = 0;
996 , *points_str = NULL;
998 int group = GROUP_AVERAGE;
999 uint32_t format = DATASOURCE_JSON;
1000 uint32_t options = 0x00000000;
1003 char *value = mystrsep(&url, "?&[]");
1004 if(!value || !*value) continue;
1006 char *name = mystrsep(&value, "=");
1007 if(!name || !*name) continue;
1008 if(!value || !*value) continue;
1010 debug(D_WEB_CLIENT, "%llu: API v1 data query param '%s' with value '%s'", w->id, name, value);
1012 // name and value are now the parameters
1013 // they are not null and not empty
1015 if(!strcmp(name, "chart")) chart = value;
1016 else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) {
1017 if(!dimensions) dimensions = buffer_create(100);
1018 buffer_strcat(dimensions, "|");
1019 buffer_strcat(dimensions, value);
1021 else if(!strcmp(name, "after")) after_str = value;
1022 else if(!strcmp(name, "before")) before_str = value;
1023 else if(!strcmp(name, "points")) points_str = value;
1024 else if(!strcmp(name, "group")) {
1025 group = web_client_api_request_v1_data_group(value, GROUP_AVERAGE);
1027 else if(!strcmp(name, "format")) {
1028 format = web_client_api_request_v1_data_format(value);
1030 else if(!strcmp(name, "options")) {
1031 options |= web_client_api_request_v1_data_options(value);
1033 else if(!strcmp(name, "callback")) {
1034 responseHandler = value;
1036 else if(!strcmp(name, "filename")) {
1037 outFileName = value;
1039 else if(!strcmp(name, "tqx")) {
1040 // parse Google Visualization API options
1041 // https://developers.google.com/chart/interactive/docs/dev/implementing_data_source
1042 char *tqx_name, *tqx_value;
1045 tqx_value = mystrsep(&value, ";");
1046 if(!tqx_value || !*tqx_value) continue;
1048 tqx_name = mystrsep(&tqx_value, ":");
1049 if(!tqx_name || !*tqx_name) continue;
1050 if(!tqx_value || !*tqx_value) continue;
1052 if(!strcmp(tqx_name, "version"))
1053 google_version = tqx_value;
1054 else if(!strcmp(tqx_name, "reqId"))
1055 google_reqId = tqx_value;
1056 else if(!strcmp(tqx_name, "sig")) {
1057 google_sig = tqx_value;
1058 google_timestamp = strtoul(google_sig, NULL, 0);
1060 else if(!strcmp(tqx_name, "out")) {
1061 google_out = tqx_value;
1062 format = web_client_api_request_v1_data_google_format(google_out);
1064 else if(!strcmp(tqx_name, "responseHandler"))
1065 responseHandler = tqx_value;
1066 else if(!strcmp(tqx_name, "outFileName"))
1067 outFileName = tqx_value;
1072 if(!chart || !*chart) {
1073 buffer_sprintf(w->response.data, "No chart id is given at the request.");
1077 RRDSET *st = rrdset_find(chart);
1078 if(!st) st = rrdset_find_byname(chart);
1080 buffer_sprintf(w->response.data, "Chart '%s' is not found.", chart);
1085 long long before = (before_str && *before_str)?atol(before_str):0;
1086 long long after = (after_str && *after_str) ?atol(after_str):0;
1087 int points = (points_str && *points_str)?atoi(points_str):0;
1089 debug(D_WEB_CLIENT, "%llu: API command 'data' for chart '%s', dimensions '%s', after '%lld', before '%lld', points '%d', group '%d', format '%u', options '0x%08x'"
1092 , (dimensions)?buffer_tostring(dimensions):""
1101 if(outFileName && *outFileName) {
1102 buffer_sprintf(w->response.header, "Content-Disposition: attachment; filename=\"%s\"\r\n", outFileName);
1103 debug(D_WEB_CLIENT, "%llu: generating outfilename header: '%s'", w->id, outFileName);
1106 if(format == DATASOURCE_DATATABLE_JSONP) {
1107 if(responseHandler == NULL)
1108 responseHandler = "google.visualization.Query.setResponse";
1110 debug(D_WEB_CLIENT_ACCESS, "%llu: GOOGLE JSON/JSONP: version = '%s', reqId = '%s', sig = '%s', out = '%s', responseHandler = '%s', outFileName = '%s'",
1111 w->id, google_version, google_reqId, google_sig, google_out, responseHandler, outFileName
1114 buffer_sprintf(w->response.data,
1115 "%s({version:'%s',reqId:'%s',status:'ok',sig:'%ld',table:",
1116 responseHandler, google_version, google_reqId, st->last_updated.tv_sec);
1118 else if(format == DATASOURCE_JSONP) {
1119 if(responseHandler == NULL)
1120 responseHandler = "callback";
1122 buffer_strcat(w->response.data, responseHandler);
1123 buffer_strcat(w->response.data, "(");
1126 ret = rrd2format(st, w->response.data, dimensions, format, points, after, before, group, options, &last_timestamp_in_data);
1128 if(format == DATASOURCE_DATATABLE_JSONP) {
1129 if(google_timestamp < last_timestamp_in_data)
1130 buffer_strcat(w->response.data, "});");
1133 // the client already has the latest data
1134 buffer_flush(w->response.data);
1135 buffer_sprintf(w->response.data,
1136 "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'not_modified',message:'Data not modified'}]});",
1137 responseHandler, google_version, google_reqId);
1140 else if(format == DATASOURCE_JSONP)
1141 buffer_strcat(w->response.data, ");");
1144 if(dimensions) buffer_free(dimensions);
1148 int web_client_api_request_v1_registry(struct web_client *w, char *url)
1150 static uint32_t hash_action = 0, hash_access = 0, hash_hello = 0, hash_delete = 0, hash_search = 0,
1151 hash_switch = 0, hash_machine = 0, hash_url = 0, hash_name = 0, hash_delete_url = 0, hash_for = 0,
1152 hash_to = 0 /*, hash_redirects = 0 */;
1154 if(unlikely(!hash_action)) {
1155 hash_action = simple_hash("action");
1156 hash_access = simple_hash("access");
1157 hash_hello = simple_hash("hello");
1158 hash_delete = simple_hash("delete");
1159 hash_search = simple_hash("search");
1160 hash_switch = simple_hash("switch");
1161 hash_machine = simple_hash("machine");
1162 hash_url = simple_hash("url");
1163 hash_name = simple_hash("name");
1164 hash_delete_url = simple_hash("delete_url");
1165 hash_for = simple_hash("for");
1166 hash_to = simple_hash("to");
1168 hash_redirects = simple_hash("redirects");
1172 char person_guid[36 + 1] = "";
1174 debug(D_WEB_CLIENT, "%llu: API v1 registry with URL '%s'", w->id, url);
1177 // The browser may send multiple cookies with our id
1179 char *cookie = strstr(w->response.data->buffer, NETDATA_REGISTRY_COOKIE_NAME "=");
1181 strncpyz(person_guid, &cookie[sizeof(NETDATA_REGISTRY_COOKIE_NAME)], 36);
1184 char *machine_guid = NULL,
1185 *machine_url = NULL,
1187 *search_machine_guid = NULL,
1189 *to_person_guid = NULL;
1195 char *value = mystrsep(&url, "?&[]");
1196 if (!value || !*value) continue;
1198 char *name = mystrsep(&value, "=");
1199 if (!name || !*name) continue;
1200 if (!value || !*value) continue;
1202 debug(D_WEB_CLIENT, "%llu: API v1 registry query param '%s' with value '%s'", w->id, name, value);
1204 uint32_t hash = simple_hash(name);
1206 if(hash == hash_action && !strcmp(name, "action")) {
1207 uint32_t vhash = simple_hash(value);
1209 if(vhash == hash_access && !strcmp(value, "access")) action = 'A';
1210 else if(vhash == hash_hello && !strcmp(value, "hello")) action = 'H';
1211 else if(vhash == hash_delete && !strcmp(value, "delete")) action = 'D';
1212 else if(vhash == hash_search && !strcmp(value, "search")) action = 'S';
1213 else if(vhash == hash_switch && !strcmp(value, "switch")) action = 'W';
1214 #ifdef NETDATA_INTERNAL_CHECKS
1215 else error("unknown registry action '%s'", value);
1216 #endif /* NETDATA_INTERNAL_CHECKS */
1219 else if(hash == hash_redirects && !strcmp(name, "redirects"))
1220 redirects = atoi(value);
1222 else if(hash == hash_machine && !strcmp(name, "machine"))
1223 machine_guid = value;
1225 else if(hash == hash_url && !strcmp(name, "url"))
1226 machine_url = value;
1228 else if(action == 'A') {
1229 if(hash == hash_name && !strcmp(name, "name"))
1232 else if(action == 'D') {
1233 if(hash == hash_delete_url && !strcmp(name, "delete_url"))
1236 else if(action == 'S') {
1237 if(hash == hash_for && !strcmp(name, "for"))
1238 search_machine_guid = value;
1240 else if(action == 'W') {
1241 if(hash == hash_to && !strcmp(name, "to"))
1242 to_person_guid = value;
1244 #ifdef NETDATA_INTERNAL_CHECKS
1245 else error("unused registry URL parameter '%s' with value '%s'", name, value);
1246 #endif /* NETDATA_INTERNAL_CHECKS */
1249 if(web_donotrack_comply && w->donottrack) {
1250 buffer_flush(w->response.data);
1251 buffer_sprintf(w->response.data, "Your web browser is sending 'DNT: 1' (Do Not Track). The registry requires persistent cookies on your browser to work.");
1255 if(action == 'A' && (!machine_guid || !machine_url || !url_name)) {
1256 buffer_flush(w->response.data);
1257 buffer_sprintf(w->response.data, "Invalid registry request - access requires these parameters: machine ('%s'), url ('%s'), name ('%s')",
1258 machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", url_name?url_name:"UNSET");
1261 else if(action == 'D' && (!machine_guid || !machine_url || !delete_url)) {
1262 buffer_flush(w->response.data);
1263 buffer_sprintf(w->response.data, "Invalid registry request - delete requires these parameters: machine ('%s'), url ('%s'), delete_url ('%s')",
1264 machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", delete_url?delete_url:"UNSET");
1267 else if(action == 'S' && (!machine_guid || !machine_url || !search_machine_guid)) {
1268 buffer_flush(w->response.data);
1269 buffer_sprintf(w->response.data, "Invalid registry request - search requires these parameters: machine ('%s'), url ('%s'), for ('%s')",
1270 machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", search_machine_guid?search_machine_guid:"UNSET");
1273 else if(action == 'W' && (!machine_guid || !machine_url || !to_person_guid)) {
1274 buffer_flush(w->response.data);
1275 buffer_sprintf(w->response.data, "Invalid registry request - switching identity requires these parameters: machine ('%s'), url ('%s'), to ('%s')",
1276 machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", to_person_guid?to_person_guid:"UNSET");
1282 w->tracking_required = 1;
1283 if(registry_verify_cookies_redirects() > 0 && (!cookie || !person_guid[0])) {
1284 buffer_flush(w->response.data);
1286 registry_set_cookie(w, "give-me-back-this-cookie-please");
1287 w->response.data->contenttype = CT_APPLICATION_JSON;
1288 buffer_sprintf(w->response.data, "{ \"status\": \"redirect\", \"registry\": \"%s\" }", registry_to_announce());
1292 * it seems that web browsers are ignoring 307 (Moved Temporarily)
1293 * under certain conditions, when using CORS
1294 * so this is commented and we use application level redirects instead
1298 if(redirects > registry_verify_cookies_redirects()) {
1299 buffer_flush(w->response.data);
1300 buffer_sprintf(w->response.data, "Your browser does not support cookies");
1304 char *encoded_url = url_encode(machine_url);
1306 error("%llu: Cannot URL encode string '%s'", w->id, machine_url);
1310 char *encoded_name = url_encode(url_name);
1313 error("%llu: Cannot URL encode string '%s'", w->id, url_name);
1317 char *encoded_guid = url_encode(machine_guid);
1321 error("%llu: Cannot URL encode string '%s'", w->id, machine_guid);
1325 buffer_sprintf(w->response.header, "Location: %s/api/v1/registry?action=access&machine=%s&name=%s&url=%s&redirects=%d\r\n",
1326 registry_to_announce(), encoded_guid, encoded_name, encoded_url, redirects);
1334 return registry_request_access_json(w, person_guid, machine_guid, machine_url, url_name, time(NULL));
1337 w->tracking_required = 1;
1338 return registry_request_delete_json(w, person_guid, machine_guid, machine_url, delete_url, time(NULL));
1341 w->tracking_required = 1;
1342 return registry_request_search_json(w, person_guid, machine_guid, machine_url, search_machine_guid, time(NULL));
1345 w->tracking_required = 1;
1346 return registry_request_switch_json(w, person_guid, machine_guid, machine_url, to_person_guid, time(NULL));
1349 return registry_request_hello_json(w);
1352 buffer_flush(w->response.data);
1353 buffer_strcat(w->response.data, "Invalid registry request - you need to set an action: hello, access, delete, search");
1358 int web_client_api_request_v1(struct web_client *w, char *url) {
1359 static uint32_t hash_data = 0, hash_chart = 0, hash_charts = 0, hash_registry = 0, hash_badge = 0, hash_alarms = 0, hash_alarm_log = 0;
1361 if(unlikely(hash_data == 0)) {
1362 hash_data = simple_hash("data");
1363 hash_chart = simple_hash("chart");
1364 hash_charts = simple_hash("charts");
1365 hash_registry = simple_hash("registry");
1366 hash_badge = simple_hash("badge.svg");
1367 hash_alarms = simple_hash("alarms");
1368 hash_alarm_log = simple_hash("alarm_log");
1372 char *tok = mystrsep(&url, "/?&");
1374 debug(D_WEB_CLIENT, "%llu: Searching for API v1 command '%s'.", w->id, tok);
1375 uint32_t hash = simple_hash(tok);
1377 if(hash == hash_data && !strcmp(tok, "data"))
1378 return web_client_api_request_v1_data(w, url);
1380 else if(hash == hash_chart && !strcmp(tok, "chart"))
1381 return web_client_api_request_v1_chart(w, url);
1383 else if(hash == hash_charts && !strcmp(tok, "charts"))
1384 return web_client_api_request_v1_charts(w, url);
1386 else if(hash == hash_registry && !strcmp(tok, "registry"))
1387 return web_client_api_request_v1_registry(w, url);
1389 else if(hash == hash_badge && !strcmp(tok, "badge.svg"))
1390 return web_client_api_request_v1_badge(w, url);
1392 else if(hash == hash_alarms && !strcmp(tok, "alarms"))
1393 return web_client_api_request_v1_alarms(w, url);
1395 else if(hash == hash_alarm_log && !strcmp(tok, "alarm_log"))
1396 return web_client_api_request_v1_alarm_log(w, url);
1399 buffer_flush(w->response.data);
1400 buffer_sprintf(w->response.data, "Unsupported v1 API command: %s", tok);
1405 buffer_flush(w->response.data);
1406 buffer_sprintf(w->response.data, "API v1 command?");
1411 int web_client_api_request(struct web_client *w, char *url)
1413 // get the api version
1414 char *tok = mystrsep(&url, "/?&");
1416 debug(D_WEB_CLIENT, "%llu: Searching for API version '%s'.", w->id, tok);
1417 if(strcmp(tok, "v1") == 0)
1418 return web_client_api_request_v1(w, url);
1420 buffer_flush(w->response.data);
1421 buffer_sprintf(w->response.data, "Unsupported API version: %s", tok);
1426 buffer_flush(w->response.data);
1427 buffer_sprintf(w->response.data, "Which API version?");
1432 int web_client_api_old_data_request(struct web_client *w, char *url, int datasource_type)
1436 char *args = strchr(url, '?');
1442 // get the name of the data to show
1443 char *tok = mystrsep(&url, "/");
1446 // do we have such a data set?
1448 debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
1449 st = rrdset_find_byname(tok);
1450 if(!st) st = rrdset_find(tok);
1455 // try to send a file with that name
1456 buffer_flush(w->response.data);
1457 return(mysendfile(w, tok));
1461 debug(D_WEB_CLIENT, "%llu: Found RRD data with name '%s'.", w->id, tok);
1463 // how many entries does the client want?
1464 int lines = rrd_default_history_entries;
1465 int group_count = 1;
1466 time_t after = 0, before = 0;
1467 int group_method = GROUP_AVERAGE;
1471 // parse the lines required
1472 tok = mystrsep(&url, "/");
1473 if(tok) lines = atoi(tok);
1474 if(lines < 1) lines = 1;
1477 // parse the group count required
1478 tok = mystrsep(&url, "/");
1479 if(tok && *tok) group_count = atoi(tok);
1480 if(group_count < 1) group_count = 1;
1481 //if(group_count > save_history / 20) group_count = save_history / 20;
1484 // parse the grouping method required
1485 tok = mystrsep(&url, "/");
1487 if(strcmp(tok, "max") == 0) group_method = GROUP_MAX;
1488 else if(strcmp(tok, "average") == 0) group_method = GROUP_AVERAGE;
1489 else if(strcmp(tok, "sum") == 0) group_method = GROUP_SUM;
1490 else debug(D_WEB_CLIENT, "%llu: Unknown group method '%s'", w->id, tok);
1495 tok = mystrsep(&url, "/");
1496 if(tok && *tok) after = strtoul(tok, NULL, 10);
1497 if(after < 0) after = 0;
1500 // parse before time
1501 tok = mystrsep(&url, "/");
1502 if(tok && *tok) before = strtoul(tok, NULL, 10);
1503 if(before < 0) before = 0;
1507 tok = mystrsep(&url, "/");
1508 if(tok && *tok && strcmp(tok, "nonzero") == 0) nonzero = 1;
1511 w->response.data->contenttype = CT_APPLICATION_JSON;
1512 buffer_flush(w->response.data);
1514 char *google_version = "0.6";
1515 char *google_reqId = "0";
1516 char *google_sig = "0";
1517 char *google_out = "json";
1518 char *google_responseHandler = "google.visualization.Query.setResponse";
1519 char *google_outFileName = NULL;
1520 time_t last_timestamp_in_data = 0;
1521 if(datasource_type == DATASOURCE_DATATABLE_JSON || datasource_type == DATASOURCE_DATATABLE_JSONP) {
1523 w->response.data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
1526 tok = mystrsep(&args, "&");
1528 char *name = mystrsep(&tok, "=");
1529 if(name && *name && strcmp(name, "tqx") == 0) {
1530 char *key = mystrsep(&tok, ":");
1531 char *value = mystrsep(&tok, ";");
1532 if(key && value && *key && *value) {
1533 if(strcmp(key, "version") == 0)
1534 google_version = value;
1536 else if(strcmp(key, "reqId") == 0)
1537 google_reqId = value;
1539 else if(strcmp(key, "sig") == 0)
1542 else if(strcmp(key, "out") == 0)
1545 else if(strcmp(key, "responseHandler") == 0)
1546 google_responseHandler = value;
1548 else if(strcmp(key, "outFileName") == 0)
1549 google_outFileName = value;
1555 debug(D_WEB_CLIENT_ACCESS, "%llu: GOOGLE JSONP: version = '%s', reqId = '%s', sig = '%s', out = '%s', responseHandler = '%s', outFileName = '%s'",
1556 w->id, google_version, google_reqId, google_sig, google_out, google_responseHandler, google_outFileName
1559 if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
1560 last_timestamp_in_data = strtoul(google_sig, NULL, 0);
1562 // check the client wants json
1563 if(strcmp(google_out, "json") != 0) {
1564 buffer_sprintf(w->response.data,
1565 "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'invalid_query',message:'output format is not supported',detailed_message:'the format %s requested is not supported by netdata.'}]});",
1566 google_responseHandler, google_version, google_reqId, google_out);
1572 if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
1573 buffer_sprintf(w->response.data,
1574 "%s({version:'%s',reqId:'%s',status:'ok',sig:'%ld',table:",
1575 google_responseHandler, google_version, google_reqId, st->last_updated.tv_sec);
1578 debug(D_WEB_CLIENT_ACCESS, "%llu: Sending RRD data '%s' (id %s, %d lines, %d group, %d group_method, %ld after, %ld before).",
1579 w->id, st->name, st->id, lines, group_count, group_method, after, before);
1581 time_t timestamp_in_data = rrd_stats_json(datasource_type, st, w->response.data, lines, group_count, group_method, (unsigned long)after, (unsigned long)before, nonzero);
1583 if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
1584 if(timestamp_in_data > last_timestamp_in_data)
1585 buffer_strcat(w->response.data, "});");
1588 // the client already has the latest data
1589 buffer_flush(w->response.data);
1590 buffer_sprintf(w->response.data,
1591 "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'not_modified',message:'Data not modified'}]});",
1592 google_responseHandler, google_version, google_reqId);
1599 const char *web_content_type_to_string(uint8_t contenttype) {
1600 switch(contenttype) {
1602 return "text/html; charset=utf-8";
1604 case CT_APPLICATION_XML:
1605 return "application/xml; charset=utf-8";
1607 case CT_APPLICATION_JSON:
1608 return "application/json; charset=utf-8";
1610 case CT_APPLICATION_X_JAVASCRIPT:
1611 return "application/x-javascript; charset=utf-8";
1614 return "text/css; charset=utf-8";
1617 return "text/xml; charset=utf-8";
1620 return "text/xsl; charset=utf-8";
1622 case CT_APPLICATION_OCTET_STREAM:
1623 return "application/octet-stream";
1625 case CT_IMAGE_SVG_XML:
1626 return "image/svg+xml";
1628 case CT_APPLICATION_X_FONT_TRUETYPE:
1629 return "application/x-font-truetype";
1631 case CT_APPLICATION_X_FONT_OPENTYPE:
1632 return "application/x-font-opentype";
1634 case CT_APPLICATION_FONT_WOFF:
1635 return "application/font-woff";
1637 case CT_APPLICATION_FONT_WOFF2:
1638 return "application/font-woff2";
1640 case CT_APPLICATION_VND_MS_FONTOBJ:
1641 return "application/vnd.ms-fontobject";
1647 return "image/jpeg";
1652 case CT_IMAGE_XICON:
1653 return "image/x-icon";
1659 return "image/icns";
1663 return "text/plain; charset=utf-8";
1668 const char *web_response_code_to_string(int code) {
1674 return "Temporary Redirect";
1677 return "Bad Request";
1686 return "Preconditions Failed";
1689 if(code >= 100 && code < 200)
1690 return "Informational";
1692 if(code >= 200 && code < 300)
1693 return "Successful";
1695 if(code >= 300 && code < 400)
1696 return "Redirection";
1698 if(code >= 400 && code < 500)
1699 return "Bad Request";
1701 if(code >= 500 && code < 600)
1702 return "Server Error";
1704 return "Undefined Error";
1708 static inline char *http_header_parse(struct web_client *w, char *s) {
1709 static uint32_t hash_origin = 0, hash_connection = 0, hash_accept_encoding = 0, hash_donottrack = 0;
1711 if(unlikely(!hash_origin)) {
1712 hash_origin = simple_uhash("Origin");
1713 hash_connection = simple_uhash("Connection");
1714 hash_accept_encoding = simple_uhash("Accept-Encoding");
1715 hash_donottrack = simple_uhash("DNT");
1721 while(*e && *e != ':') e++;
1728 char *v = e + 1, *ve;
1730 // skip leading spaces from value
1731 while(*v == ' ') v++;
1735 while(*ve && *ve != '\r') ve++;
1736 if(!*ve || ve[1] != '\n') {
1741 // terminate the value
1744 // fprintf(stderr, "HEADER: '%s' = '%s'\n", s, v);
1745 uint32_t hash = simple_uhash(s);
1747 if(hash == hash_origin && !strcasecmp(s, "Origin"))
1748 strncpyz(w->origin, v, ORIGIN_MAX);
1750 else if(hash == hash_connection && !strcasecmp(s, "Connection")) {
1751 if(strcasestr(v, "keep-alive"))
1754 else if(web_donotrack_comply && hash == hash_donottrack && !strcasecmp(s, "DNT")) {
1755 if(*v == '0') w->donottrack = 0;
1756 else if(*v == '1') w->donottrack = 1;
1758 #ifdef NETDATA_WITH_ZLIB
1759 else if(hash == hash_accept_encoding && !strcasecmp(s, "Accept-Encoding")) {
1760 if(web_enable_gzip) {
1761 if(strcasestr(v, "gzip"))
1762 web_client_enable_deflate(w, 1);
1764 // does not seem to work
1765 // else if(strcasestr(v, "deflate"))
1766 // web_client_enable_deflate(w, 0);
1769 #endif /* NETDATA_WITH_ZLIB */
1776 // http_request_validate()
1778 // = 0 : all good, process the request
1779 // > 0 : request is not supported
1780 // < 0 : request is incomplete - wait for more data
1782 static inline int http_request_validate(struct web_client *w) {
1783 char *s = w->response.data->buffer, *encoded_url = NULL;
1785 // is is a valid request?
1786 if(!strncmp(s, "GET ", 4)) {
1787 encoded_url = s = &s[4];
1788 w->mode = WEB_CLIENT_MODE_NORMAL;
1790 else if(!strncmp(s, "OPTIONS ", 8)) {
1791 encoded_url = s = &s[8];
1792 w->mode = WEB_CLIENT_MODE_OPTIONS;
1795 w->wait_receive = 0;
1799 // find the SPACE + "HTTP/"
1801 // find the next space
1802 while (*s && *s != ' ') s++;
1804 // is it SPACE + "HTTP/" ?
1805 if(*s && !strncmp(s, " HTTP/", 6)) break;
1809 // incomplete requests
1811 w->wait_receive = 1;
1815 // we have the end of encoded_url - remember it
1818 // make sure we have complete request
1819 // complete requests contain: \r\n\r\n
1822 while(*s && *s++ != '\r');
1824 // did we reach the end?
1825 if(unlikely(!*s)) break;
1828 if(likely(*s++ == '\n')) {
1830 // is it again \r\n ? (header end)
1831 if(unlikely(*s == '\r' && s[1] == '\n')) {
1832 // a valid complete HTTP request found
1835 url_decode_r(w->decoded_url, encoded_url, URL_MAX + 1);
1838 // copy the URL - we are going to overwrite parts of it
1839 // FIXME -- we should avoid it
1840 strncpyz(w->last_url, w->decoded_url, URL_MAX);
1842 w->wait_receive = 0;
1846 // another header line
1847 s = http_header_parse(w, s);
1851 // incomplete request
1852 w->wait_receive = 1;
1856 void web_client_process(struct web_client *w) {
1857 static uint32_t hash_api = 0, hash_netdata_conf = 0, hash_data = 0, hash_datasource = 0, hash_graph = 0,
1858 hash_list = 0, hash_all_json = 0, hash_exit = 0, hash_debug = 0, hash_mirror = 0;
1861 gettimeofday(&w->tv_in, NULL);
1863 if(unlikely(!hash_api)) {
1864 hash_api = simple_hash("api");
1865 hash_netdata_conf = simple_hash("netdata.conf");
1866 hash_data = simple_hash(WEB_PATH_DATA);
1867 hash_datasource = simple_hash(WEB_PATH_DATASOURCE);
1868 hash_graph = simple_hash(WEB_PATH_GRAPH);
1869 hash_list = simple_hash("list");
1870 hash_all_json = simple_hash("all.json");
1871 hash_exit = simple_hash("exit");
1872 hash_debug = simple_hash("debug");
1873 hash_mirror = simple_hash("mirror");
1879 int what_to_do = http_request_validate(w);
1881 // wait for more data
1882 if(what_to_do < 0) {
1883 if(w->response.data->len > TOO_BIG_REQUEST) {
1884 strcpy(w->last_url, "too big request");
1886 debug(D_WEB_CLIENT_ACCESS, "%llu: Received request is too big (%zu bytes).", w->id, w->response.data->len);
1889 buffer_flush(w->response.data);
1890 buffer_sprintf(w->response.data, "Received request is too big (%zu bytes).\r\n", w->response.data->len);
1893 // wait for more data
1897 else if(what_to_do > 0) {
1898 // strcpy(w->last_url, "not a valid request");
1900 debug(D_WEB_CLIENT_ACCESS, "%llu: Cannot understand '%s'.", w->id, w->response.data->buffer);
1903 buffer_flush(w->response.data);
1904 buffer_strcat(w->response.data, "I don't understand you...\r\n");
1906 else { // what_to_do == 0
1907 if(w->mode == WEB_CLIENT_MODE_OPTIONS) {
1909 w->response.data->contenttype = CT_TEXT_PLAIN;
1910 buffer_flush(w->response.data);
1911 buffer_strcat(w->response.data, "OK");
1914 char *url = w->decoded_url;
1915 char *tok = mystrsep(&url, "/?");
1917 uint32_t hash = simple_hash(tok);
1918 debug(D_WEB_CLIENT, "%llu: Processing command '%s'.", w->id, tok);
1920 if(hash == hash_api && strcmp(tok, "api") == 0) {
1921 // the client is requesting api access
1922 code = web_client_api_request(w, url);
1924 else if(hash == hash_netdata_conf && strcmp(tok, "netdata.conf") == 0) {
1926 debug(D_WEB_CLIENT_ACCESS, "%llu: Sending netdata.conf ...", w->id);
1928 w->response.data->contenttype = CT_TEXT_PLAIN;
1929 buffer_flush(w->response.data);
1930 generate_config(w->response.data, 0);
1932 else if(hash == hash_data && strcmp(tok, WEB_PATH_DATA) == 0) { // "data"
1933 // the client is requesting rrd data -- OLD API
1934 code = web_client_api_old_data_request(w, url, DATASOURCE_JSON);
1936 else if(hash == hash_datasource && strcmp(tok, WEB_PATH_DATASOURCE) == 0) { // "datasource"
1937 // the client is requesting google datasource -- OLD API
1938 code = web_client_api_old_data_request(w, url, DATASOURCE_DATATABLE_JSONP);
1940 else if(hash == hash_graph && strcmp(tok, WEB_PATH_GRAPH) == 0) { // "graph"
1941 // the client is requesting an rrd graph -- OLD API
1943 // get the name of the data to show
1944 tok = mystrsep(&url, "/?&");
1946 debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
1948 // do we have such a data set?
1949 RRDSET *st = rrdset_find_byname(tok);
1950 if(!st) st = rrdset_find(tok);
1953 // try to send a file with that name
1954 buffer_flush(w->response.data);
1955 code = mysendfile(w, tok);
1959 debug(D_WEB_CLIENT_ACCESS, "%llu: Sending %s.json of RRD_STATS...", w->id, st->name);
1960 w->response.data->contenttype = CT_APPLICATION_JSON;
1961 buffer_flush(w->response.data);
1962 rrd_stats_graph_json(st, url, w->response.data);
1967 buffer_flush(w->response.data);
1968 buffer_strcat(w->response.data, "Graph name?\r\n");
1971 else if(hash == hash_list && strcmp(tok, "list") == 0) {
1975 debug(D_WEB_CLIENT_ACCESS, "%llu: Sending list of RRD_STATS...", w->id);
1977 buffer_flush(w->response.data);
1978 RRDSET *st = localhost.rrdset_root;
1980 for ( ; st ; st = st->next )
1981 buffer_sprintf(w->response.data, "%s\n", st->name);
1983 else if(hash == hash_all_json && strcmp(tok, "all.json") == 0) {
1986 debug(D_WEB_CLIENT_ACCESS, "%llu: Sending JSON list of all monitors of RRD_STATS...", w->id);
1988 w->response.data->contenttype = CT_APPLICATION_JSON;
1989 buffer_flush(w->response.data);
1990 rrd_stats_all_json(w->response.data);
1992 #ifdef NETDATA_INTERNAL_CHECKS
1993 else if(hash == hash_exit && strcmp(tok, "exit") == 0) {
1995 w->response.data->contenttype = CT_TEXT_PLAIN;
1996 buffer_flush(w->response.data);
1999 buffer_strcat(w->response.data, "ok, will do...");
2001 buffer_strcat(w->response.data, "I am doing it already");
2003 error("web request to exit received.");
2004 netdata_cleanup_and_exit(0);
2007 else if(hash == hash_debug && strcmp(tok, "debug") == 0) {
2008 buffer_flush(w->response.data);
2010 // get the name of the data to show
2011 tok = mystrsep(&url, "/?&");
2013 debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
2015 // do we have such a data set?
2016 RRDSET *st = rrdset_find_byname(tok);
2017 if(!st) st = rrdset_find(tok);
2020 buffer_sprintf(w->response.data, "Chart %s is not found.\r\n", tok);
2021 debug(D_WEB_CLIENT_ACCESS, "%llu: %s is not found.", w->id, tok);
2025 debug_flags |= D_RRD_STATS;
2026 st->debug = !st->debug;
2027 buffer_sprintf(w->response.data, "Chart %s has now debug %s.\r\n", tok, st->debug?"enabled":"disabled");
2028 debug(D_WEB_CLIENT_ACCESS, "%llu: debug for %s is %s.", w->id, tok, st->debug?"enabled":"disabled");
2033 buffer_flush(w->response.data);
2034 buffer_strcat(w->response.data, "debug which chart?\r\n");
2037 else if(hash == hash_mirror && strcmp(tok, "mirror") == 0) {
2040 debug(D_WEB_CLIENT_ACCESS, "%llu: Mirroring...", w->id);
2042 // replace the zero bytes with spaces
2043 buffer_char_replace(w->response.data, '\0', ' ');
2045 // just leave the buffer as is
2046 // it will be copied back to the client
2048 #endif /* NETDATA_INTERNAL_CHECKS */
2050 char filename[FILENAME_MAX+1];
2052 strncpyz(filename, w->last_url, FILENAME_MAX);
2053 tok = mystrsep(&url, "?");
2054 buffer_flush(w->response.data);
2055 code = mysendfile(w, (tok && *tok)?tok:"/");
2059 char filename[FILENAME_MAX+1];
2061 strncpyz(filename, w->last_url, FILENAME_MAX);
2062 tok = mystrsep(&url, "?");
2063 buffer_flush(w->response.data);
2064 code = mysendfile(w, (tok && *tok)?tok:"/");
2069 gettimeofday(&w->tv_ready, NULL);
2070 w->response.data->date = time(NULL);
2071 w->response.sent = 0;
2072 w->response.code = code;
2074 // prepare the HTTP response header
2075 debug(D_WEB_CLIENT, "%llu: Generating HTTP header with response %d.", w->id, code);
2077 const char *content_type_string = web_content_type_to_string(w->response.data->contenttype);
2078 const char *code_msg = web_response_code_to_string(code);
2081 struct tm tmbuf, *tm = gmtime_r(&w->response.data->date, &tmbuf);
2082 strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S %Z", tm);
2084 buffer_sprintf(w->response.header_output,
2085 "HTTP/1.1 %d %s\r\n"
2086 "Connection: %s\r\n"
2087 "Server: NetData Embedded HTTP Server\r\n"
2088 "Access-Control-Allow-Origin: %s\r\n"
2089 "Access-Control-Allow-Credentials: true\r\n"
2090 "Content-Type: %s\r\n"
2093 , w->keepalive?"keep-alive":"close"
2095 , content_type_string
2099 if(w->cookie1[0] || w->cookie2[0]) {
2101 buffer_sprintf(w->response.header_output,
2102 "Set-Cookie: %s\r\n",
2107 buffer_sprintf(w->response.header_output,
2108 "Set-Cookie: %s\r\n",
2112 if(web_donotrack_comply)
2113 buffer_sprintf(w->response.header_output,
2114 "Tk: T;cookies\r\n");
2117 if(web_donotrack_comply) {
2118 if(w->tracking_required)
2119 buffer_sprintf(w->response.header_output,
2120 "Tk: T;cookies\r\n");
2122 buffer_sprintf(w->response.header_output,
2127 if(w->mode == WEB_CLIENT_MODE_OPTIONS) {
2128 buffer_strcat(w->response.header_output,
2129 "Access-Control-Allow-Methods: GET, OPTIONS\r\n"
2130 "Access-Control-Allow-Headers: accept, x-requested-with, origin, content-type, cookie\r\n"
2131 "Access-Control-Max-Age: 1209600\r\n" // 86400 * 14
2135 if(buffer_strlen(w->response.header))
2136 buffer_strcat(w->response.header_output, buffer_tostring(w->response.header));
2138 if(w->mode == WEB_CLIENT_MODE_NORMAL && (w->response.data->options & WB_CONTENT_NO_CACHEABLE)) {
2139 buffer_sprintf(w->response.header_output,
2141 "Cache-Control: no-cache\r\n"
2144 else if(w->mode != WEB_CLIENT_MODE_OPTIONS) {
2146 time_t et = w->response.data->date + (86400 * 14);
2147 struct tm etmbuf, *etm = gmtime_r(&et, &etmbuf);
2148 strftime(edate, sizeof(edate), "%a, %d %b %Y %H:%M:%S %Z", etm);
2150 buffer_sprintf(w->response.header_output,
2152 "Cache-Control: public\r\n"
2156 // if we know the content length, put it
2157 if(!w->response.zoutput && (w->response.data->len || w->response.rlen))
2158 buffer_sprintf(w->response.header_output,
2159 "Content-Length: %zu\r\n"
2160 , w->response.data->len? w->response.data->len: w->response.rlen
2162 else if(!w->response.zoutput)
2163 w->keepalive = 0; // content-length is required for keep-alive
2165 if(w->response.zoutput) {
2166 buffer_strcat(w->response.header_output,
2167 "Content-Encoding: gzip\r\n"
2168 "Transfer-Encoding: chunked\r\n"
2172 buffer_strcat(w->response.header_output, "\r\n");
2174 // sent the HTTP header
2175 debug(D_WEB_DATA, "%llu: Sending response HTTP header of size %zu: '%s'"
2177 , buffer_strlen(w->response.header_output)
2178 , buffer_tostring(w->response.header_output)
2181 web_client_crock_socket(w);
2183 bytes = send(w->ofd, buffer_tostring(w->response.header_output), buffer_strlen(w->response.header_output), 0);
2184 if(bytes != (ssize_t) buffer_strlen(w->response.header_output)) {
2186 w->stats_sent_bytes += bytes;
2188 debug(D_WEB_CLIENT, "%llu: HTTP Header failed to be sent (I sent %zu bytes but the system sent %zd bytes). Closing web client."
2190 , buffer_strlen(w->response.header_output)
2193 WEB_CLIENT_IS_DEAD(w);
2197 w->stats_sent_bytes += bytes;
2199 // enable sending immediately if we have data
2200 if(w->response.data->len) w->wait_send = 1;
2201 else w->wait_send = 0;
2205 case WEB_CLIENT_MODE_OPTIONS:
2206 debug(D_WEB_CLIENT, "%llu: Done preparing the OPTIONS response. Sending data (%zu bytes) to client.", w->id, w->response.data->len);
2209 case WEB_CLIENT_MODE_NORMAL:
2210 debug(D_WEB_CLIENT, "%llu: Done preparing the response. Sending data (%zu bytes) to client.", w->id, w->response.data->len);
2213 case WEB_CLIENT_MODE_FILECOPY:
2214 if(w->response.rlen) {
2215 debug(D_WEB_CLIENT, "%llu: Done preparing the response. Will be sending data file of %zu bytes to client.", w->id, w->response.rlen);
2216 w->wait_receive = 1;
2219 // utilize the kernel sendfile() for copying the file to the socket.
2220 // this block of code can be commented, without anything missing.
2221 // when it is commented, the program will copy the data using async I/O.
2223 long len = sendfile(w->ofd, w->ifd, NULL, w->response.data->rbytes);
2224 if(len != w->response.data->rbytes)
2225 error("%llu: sendfile() should copy %ld bytes, but copied %ld. Falling back to manual copy.", w->id, w->response.data->rbytes, len);
2227 web_client_reset(w);
2232 debug(D_WEB_CLIENT, "%llu: Done preparing the response. Will be sending an unknown amount of bytes to client.", w->id);
2236 fatal("%llu: Unknown client mode %d.", w->id, w->mode);
2241 ssize_t web_client_send_chunk_header(struct web_client *w, size_t len)
2243 debug(D_DEFLATE, "%llu: OPEN CHUNK of %zu bytes (hex: %zx).", w->id, len, len);
2245 sprintf(buf, "%zX\r\n", len);
2247 ssize_t bytes = send(w->ofd, buf, strlen(buf), 0);
2249 debug(D_DEFLATE, "%llu: Sent chunk header %zd bytes.", w->id, bytes);
2250 w->stats_sent_bytes += bytes;
2253 else if(bytes == 0) {
2254 debug(D_WEB_CLIENT, "%llu: Did not send chunk header to the client.", w->id);
2255 WEB_CLIENT_IS_DEAD(w);
2258 debug(D_WEB_CLIENT, "%llu: Failed to send chunk header to client.", w->id);
2259 WEB_CLIENT_IS_DEAD(w);
2265 ssize_t web_client_send_chunk_close(struct web_client *w)
2267 //debug(D_DEFLATE, "%llu: CLOSE CHUNK.", w->id);
2269 ssize_t bytes = send(w->ofd, "\r\n", 2, 0);
2271 debug(D_DEFLATE, "%llu: Sent chunk suffix %zd bytes.", w->id, bytes);
2272 w->stats_sent_bytes += bytes;
2275 else if(bytes == 0) {
2276 debug(D_WEB_CLIENT, "%llu: Did not send chunk suffix to the client.", w->id);
2277 WEB_CLIENT_IS_DEAD(w);
2280 debug(D_WEB_CLIENT, "%llu: Failed to send chunk suffix to client.", w->id);
2281 WEB_CLIENT_IS_DEAD(w);
2287 ssize_t web_client_send_chunk_finalize(struct web_client *w)
2289 //debug(D_DEFLATE, "%llu: FINALIZE CHUNK.", w->id);
2291 ssize_t bytes = send(w->ofd, "\r\n0\r\n\r\n", 7, 0);
2293 debug(D_DEFLATE, "%llu: Sent chunk suffix %zd bytes.", w->id, bytes);
2294 w->stats_sent_bytes += bytes;
2297 else if(bytes == 0) {
2298 debug(D_WEB_CLIENT, "%llu: Did not send chunk finalize suffix to the client.", w->id);
2299 WEB_CLIENT_IS_DEAD(w);
2302 debug(D_WEB_CLIENT, "%llu: Failed to send chunk finalize suffix to client.", w->id);
2303 WEB_CLIENT_IS_DEAD(w);
2309 #ifdef NETDATA_WITH_ZLIB
2310 ssize_t web_client_send_deflate(struct web_client *w)
2312 ssize_t len = 0, t = 0;
2314 // when using compression,
2315 // w->response.sent is the amount of bytes passed through compression
2317 debug(D_DEFLATE, "%llu: web_client_send_deflate(): w->response.data->len = %zu, w->response.sent = %zu, w->response.zhave = %zu, w->response.zsent = %zu, w->response.zstream.avail_in = %u, w->response.zstream.avail_out = %u, w->response.zstream.total_in = %lu, w->response.zstream.total_out = %lu.",
2318 w->id, w->response.data->len, w->response.sent, w->response.zhave, w->response.zsent, w->response.zstream.avail_in, w->response.zstream.avail_out, w->response.zstream.total_in, w->response.zstream.total_out);
2320 if(w->response.data->len - w->response.sent == 0 && w->response.zstream.avail_in == 0 && w->response.zhave == w->response.zsent && w->response.zstream.avail_out != 0) {
2321 // there is nothing to send
2323 debug(D_WEB_CLIENT, "%llu: Out of output data.", w->id);
2325 // finalize the chunk
2326 if(w->response.sent != 0) {
2327 t = web_client_send_chunk_finalize(w);
2331 if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->response.rlen && w->response.rlen > w->response.data->len) {
2332 // we have to wait, more data will come
2333 debug(D_WEB_CLIENT, "%llu: Waiting for more data to become available.", w->id);
2338 if(unlikely(!w->keepalive)) {
2339 debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %zu bytes sent.", w->id, w->response.sent);
2340 WEB_CLIENT_IS_DEAD(w);
2345 web_client_reset(w);
2346 debug(D_WEB_CLIENT, "%llu: Done sending all data on socket.", w->id);
2350 if(w->response.zhave == w->response.zsent) {
2351 // compress more input data
2353 // close the previous open chunk
2354 if(w->response.sent != 0) {
2355 t = web_client_send_chunk_close(w);
2359 debug(D_DEFLATE, "%llu: Compressing %zu new bytes starting from %zu (and %u left behind).", w->id, (w->response.data->len - w->response.sent), w->response.sent, w->response.zstream.avail_in);
2361 // give the compressor all the data not passed through the compressor yet
2362 if(w->response.data->len > w->response.sent) {
2363 w->response.zstream.next_in = (Bytef *)&w->response.data->buffer[w->response.sent - w->response.zstream.avail_in];
2364 w->response.zstream.avail_in += (uInt) (w->response.data->len - w->response.sent);
2367 // reset the compressor output buffer
2368 w->response.zstream.next_out = w->response.zbuffer;
2369 w->response.zstream.avail_out = ZLIB_CHUNK;
2371 // ask for FINISH if we have all the input
2372 int flush = Z_SYNC_FLUSH;
2373 if(w->mode == WEB_CLIENT_MODE_NORMAL
2374 || (w->mode == WEB_CLIENT_MODE_FILECOPY && !w->wait_receive && w->response.data->len == w->response.rlen)) {
2376 debug(D_DEFLATE, "%llu: Requesting Z_FINISH, if possible.", w->id);
2379 debug(D_DEFLATE, "%llu: Requesting Z_SYNC_FLUSH.", w->id);
2383 if(deflate(&w->response.zstream, flush) == Z_STREAM_ERROR) {
2384 error("%llu: Compression failed. Closing down client.", w->id);
2385 web_client_reset(w);
2389 w->response.zhave = ZLIB_CHUNK - w->response.zstream.avail_out;
2390 w->response.zsent = 0;
2392 // keep track of the bytes passed through the compressor
2393 w->response.sent = w->response.data->len;
2395 debug(D_DEFLATE, "%llu: Compression produced %zu bytes.", w->id, w->response.zhave);
2398 ssize_t t2 = web_client_send_chunk_header(w, w->response.zhave);
2399 if(t2 < 0) return t2;
2403 debug(D_WEB_CLIENT, "%llu: Sending %zu bytes of data (+%zd of chunk header).", w->id, w->response.zhave - w->response.zsent, t);
2405 len = send(w->ofd, &w->response.zbuffer[w->response.zsent], (size_t) (w->response.zhave - w->response.zsent), MSG_DONTWAIT);
2407 w->stats_sent_bytes += len;
2408 w->response.zsent += len;
2410 debug(D_WEB_CLIENT, "%llu: Sent %zd bytes.", w->id, len);
2413 debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client (zhave = %zu, zsent = %zu, need to send = %zu).",
2414 w->id, w->response.zhave, w->response.zsent, w->response.zhave - w->response.zsent);
2416 WEB_CLIENT_IS_DEAD(w);
2419 debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
2420 WEB_CLIENT_IS_DEAD(w);
2425 #endif // NETDATA_WITH_ZLIB
2427 ssize_t web_client_send(struct web_client *w) {
2428 #ifdef NETDATA_WITH_ZLIB
2429 if(likely(w->response.zoutput)) return web_client_send_deflate(w);
2430 #endif // NETDATA_WITH_ZLIB
2434 if(unlikely(w->response.data->len - w->response.sent == 0)) {
2435 // there is nothing to send
2437 debug(D_WEB_CLIENT, "%llu: Out of output data.", w->id);
2439 // there can be two cases for this
2440 // A. we have done everything
2441 // B. we temporarily have nothing to send, waiting for the buffer to be filled by ifd
2443 if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->response.rlen && w->response.rlen > w->response.data->len) {
2444 // we have to wait, more data will come
2445 debug(D_WEB_CLIENT, "%llu: Waiting for more data to become available.", w->id);
2450 if(unlikely(!w->keepalive)) {
2451 debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %zu bytes sent.", w->id, w->response.sent);
2452 WEB_CLIENT_IS_DEAD(w);
2456 web_client_reset(w);
2457 debug(D_WEB_CLIENT, "%llu: Done sending all data on socket. Waiting for next request on the same socket.", w->id);
2461 bytes = send(w->ofd, &w->response.data->buffer[w->response.sent], w->response.data->len - w->response.sent, MSG_DONTWAIT);
2462 if(likely(bytes > 0)) {
2463 w->stats_sent_bytes += bytes;
2464 w->response.sent += bytes;
2465 debug(D_WEB_CLIENT, "%llu: Sent %zd bytes.", w->id, bytes);
2467 else if(likely(bytes == 0)) {
2468 debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client.", w->id);
2469 WEB_CLIENT_IS_DEAD(w);
2472 debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
2473 WEB_CLIENT_IS_DEAD(w);
2479 ssize_t web_client_receive(struct web_client *w)
2481 // do we have any space for more data?
2482 buffer_need_bytes(w->response.data, WEB_REQUEST_LENGTH);
2484 ssize_t left = w->response.data->size - w->response.data->len;
2487 if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY))
2488 bytes = read(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1));
2490 bytes = recv(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1), MSG_DONTWAIT);
2492 if(likely(bytes > 0)) {
2493 if(w->mode != WEB_CLIENT_MODE_FILECOPY)
2494 w->stats_received_bytes += bytes;
2496 size_t old = w->response.data->len;
2497 w->response.data->len += bytes;
2498 w->response.data->buffer[w->response.data->len] = '\0';
2500 debug(D_WEB_CLIENT, "%llu: Received %zd bytes.", w->id, bytes);
2501 debug(D_WEB_DATA, "%llu: Received data: '%s'.", w->id, &w->response.data->buffer[old]);
2503 if(w->mode == WEB_CLIENT_MODE_FILECOPY) {
2506 if(w->response.rlen && w->response.data->len >= w->response.rlen)
2507 w->wait_receive = 0;
2510 else if(likely(bytes == 0)) {
2511 debug(D_WEB_CLIENT, "%llu: Out of input data.", w->id);
2513 // if we cannot read, it means we have an error on input.
2514 // if however, we are copying a file from ifd to ofd, we should not return an error.
2515 // in this case, the error should be generated when the file has been sent to the client.
2517 if(w->mode == WEB_CLIENT_MODE_FILECOPY) {
2518 // we are copying data from ifd to ofd
2519 // let it finish copying...
2520 w->wait_receive = 0;
2522 debug(D_WEB_CLIENT, "%llu: Read the whole file.", w->id);
2523 if(w->ifd != w->ofd) close(w->ifd);
2527 debug(D_WEB_CLIENT, "%llu: failed to receive data.", w->id);
2528 WEB_CLIENT_IS_DEAD(w);
2532 debug(D_WEB_CLIENT, "%llu: receive data failed.", w->id);
2533 WEB_CLIENT_IS_DEAD(w);
2540 // --------------------------------------------------------------------------------------
2541 // the thread of a single client
2543 // 1. waits for input and output, using async I/O
2544 // 2. it processes HTTP requests
2545 // 3. it generates HTTP responses
2546 // 4. it copies data from input to output if mode is FILECOPY
2548 void *web_client_main(void *ptr)
2550 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
2551 error("Cannot set pthread cancel type to DEFERRED.");
2553 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
2554 error("Cannot set pthread cancel state to ENABLE.");
2556 struct web_client *w = ptr;
2557 struct pollfd fds[2], *ifd, *ofd;
2558 int retval, fdmax = 0, timeout;
2560 log_access("%llu: %s port %s connected on thread task id %d", w->id, w->client_ip, w->client_port, gettid());
2563 if(unlikely(w->dead)) {
2564 debug(D_WEB_CLIENT, "%llu: client is dead.", w->id);
2567 else if(unlikely(!w->wait_receive && !w->wait_send)) {
2568 debug(D_WEB_CLIENT, "%llu: client is not set for neither receiving nor sending data.", w->id);
2572 if(unlikely(w->ifd < 0 || w->ofd < 0)) {
2573 error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd", w->id, w->ifd, w->ofd);
2577 if(w->ifd == w->ofd) {
2582 if(w->wait_receive) fds[0].events |= POLLIN;
2583 if(w->wait_send) fds[0].events |= POLLOUT;
2589 ifd = ofd = &fds[0];
2597 if(w->wait_receive) fds[0].events |= POLLIN;
2603 if(w->wait_send) fds[1].events |= POLLOUT;
2609 debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
2611 timeout = web_client_timeout * 1000;
2612 retval = poll(fds, fdmax, timeout);
2614 if(unlikely(retval == -1)) {
2615 if(errno == EAGAIN || errno == EINTR) {
2616 debug(D_WEB_CLIENT, "%llu: EAGAIN received.", w->id);
2620 debug(D_WEB_CLIENT, "%llu: LISTENER: poll() failed (input fd = %d, output fd = %d). Closing client.", w->id, w->ifd, w->ofd);
2623 else if(unlikely(!retval)) {
2624 debug(D_WEB_CLIENT, "%llu: Timeout while waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
2629 if(w->wait_send && ofd->revents & POLLOUT) {
2631 if(web_client_send(w) < 0) {
2632 debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
2637 if(w->wait_receive && (ifd->revents & POLLIN || ifd->revents & POLLPRI)) {
2639 if(web_client_receive(w) < 0) {
2640 debug(D_WEB_CLIENT, "%llu: Cannot receive data from client. Closing client.", w->id);
2644 if(w->mode == WEB_CLIENT_MODE_NORMAL) {
2645 debug(D_WEB_CLIENT, "%llu: Attempting to process received data.", w->id);
2646 web_client_process(w);
2650 if(unlikely(!used)) {
2651 debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on socket.", w->id);
2656 web_client_reset(w);
2658 log_access("%llu: %s port %s disconnected from thread task id %d", w->id, w->client_ip, w->client_port, gettid());
2659 debug(D_WEB_CLIENT, "%llu: done...", w->id);
2661 // close the sockets/files now
2662 // to free file descriptors
2663 if(w->ifd == w->ofd) {
2664 if(w->ifd != -1) close(w->ifd);
2667 if(w->ifd != -1) close(w->ifd);
2668 if(w->ofd != -1) close(w->ofd);