+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
+#include <errno.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <netinet/tcp.h>
+#include <malloc.h>
+#include <pwd.h>
+#include <grp.h>
+#include <ctype.h>
-#include "global_statistics.h"
+#include "common.h"
#include "log.h"
+#include "appconfig.h"
+#include "url.h"
+#include "web_buffer.h"
+#include "web_server.h"
+#include "global_statistics.h"
+#include "rrd.h"
+#include "rrd2json.h"
+#include "registry.h"
#include "web_client.h"
+#include "../config.h"
+
+#define INITIAL_WEB_DATA_LENGTH 16384
+#define WEB_REQUEST_LENGTH 16384
+#define TOO_BIG_REQUEST 16384
+
+int web_client_timeout = DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS;
+int web_enable_gzip = 1;
-#define INITIAL_WEB_DATA_LENGTH 65536
+extern int netdata_exit;
struct web_client *web_clients = NULL;
unsigned long long web_clients_count = 0;
struct web_client *web_client_create(int listener)
{
struct web_client *w;
-
+
w = calloc(1, sizeof(struct web_client));
if(!w) {
error("Cannot allocate new web_client memory.");
w->client_port[NI_MAXSERV] = '\0';
switch(sadr->sa_family) {
+
case AF_INET:
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);
break;
+
case AF_INET6:
if(strncmp(w->client_ip, "::ffff:", 7) == 0) {
strcpy(w->client_ip, &w->client_ip[7]);
}
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);
break;
+
default:
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);
break;
if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0) error("%llu: Cannot set SO_KEEPALIVE on socket.", w->id);
}
- w->data = web_buffer_create(INITIAL_WEB_DATA_LENGTH);
- if(!w->data) {
+ w->response.data = buffer_create(INITIAL_WEB_DATA_LENGTH);
+ if(unlikely(!w->response.data)) {
+ // no need for error log - web_buffer_create already logged the error
+ close(w->ifd);
+ free(w);
+ return NULL;
+ }
+
+ w->response.header = buffer_create(HTTP_RESPONSE_HEADER_SIZE);
+ if(unlikely(!w->response.header)) {
+ // no need for error log - web_buffer_create already logged the error
+ buffer_free(w->response.data);
+ close(w->ifd);
+ free(w);
+ return NULL;
+ }
+
+ w->response.header_output = buffer_create(HTTP_RESPONSE_HEADER_SIZE);
+ if(unlikely(!w->response.header_output)) {
+ // no need for error log - web_buffer_create already logged the error
+ buffer_free(w->response.header);
+ buffer_free(w->response.data);
close(w->ifd);
free(w);
return NULL;
return(w);
}
+void web_client_reset(struct web_client *w)
+{
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+
+ long sent = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
+
+#ifdef NETDATA_WITH_ZLIB
+ if(likely(w->response.zoutput)) sent = (long)w->response.zstream.total_out;
+#endif
+
+ long size = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
+
+ if(likely(w->last_url[0]))
+ log_access("%llu: (sent/all = %ld/%ld bytes %0.0f%%, prep/sent/total = %0.2f/%0.2f/%0.2f ms) %s: %d '%s'",
+ w->id,
+ sent, size, -((size>0)?((float)(size-sent)/(float)size * 100.0):0.0),
+ (float)usecdiff(&w->tv_ready, &w->tv_in) / 1000.0,
+ (float)usecdiff(&tv, &w->tv_ready) / 1000.0,
+ (float)usecdiff(&tv, &w->tv_in) / 1000.0,
+ (w->mode == WEB_CLIENT_MODE_FILECOPY)?"filecopy":((w->mode == WEB_CLIENT_MODE_OPTIONS)?"options":"data"),
+ w->response.code,
+ w->last_url
+ );
+
+ debug(D_WEB_CLIENT, "%llu: Reseting client.", w->id);
+
+ if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY)) {
+ debug(D_WEB_CLIENT, "%llu: Closing filecopy input file.", w->id);
+ close(w->ifd);
+ w->ifd = w->ofd;
+ }
+
+ w->last_url[0] = '\0';
+ w->cookie[0] = '\0';
+
+ w->mode = WEB_CLIENT_MODE_NORMAL;
+
+ buffer_reset(w->response.header_output);
+ buffer_reset(w->response.header);
+ buffer_reset(w->response.data);
+ w->response.rlen = 0;
+ w->response.sent = 0;
+ w->response.code = 0;
+
+ w->wait_receive = 1;
+ w->wait_send = 0;
+
+ w->response.zoutput = 0;
+
+ // if we had enabled compression, release it
+#ifdef NETDATA_WITH_ZLIB
+ if(w->response.zinitialized) {
+ debug(D_DEFLATE, "%llu: Reseting compression.", w->id);
+ deflateEnd(&w->response.zstream);
+ w->response.zsent = 0;
+ w->response.zhave = 0;
+ w->response.zstream.avail_in = 0;
+ w->response.zstream.avail_out = 0;
+ w->response.zstream.total_in = 0;
+ w->response.zstream.total_out = 0;
+ w->response.zinitialized = 0;
+ }
+#endif // NETDATA_WITH_ZLIB
+}
+
struct web_client *web_client_free(struct web_client *w)
{
struct web_client *n = w->next;
if(w == web_clients) web_clients = w->next;
- if(w->data) web_buffer_free(w->data);
+ if(w->response.header_output) buffer_free(w->response.header_output);
+ if(w->response.header) buffer_free(w->response.header);
+ if(w->response.data) buffer_free(w->response.data);
close(w->ifd);
if(w->ofd != w->ifd) close(w->ofd);
free(w);
return(n);
}
+
+uid_t web_files_uid(void)
+{
+ static char *web_owner = NULL;
+ static uid_t owner_uid = 0;
+
+ if(unlikely(!web_owner)) {
+ web_owner = config_get("global", "web files owner", config_get("global", "run as user", ""));
+ if(!web_owner || !*web_owner)
+ owner_uid = geteuid();
+ else {
+ // getpwnam() is not thread safe,
+ // but we have called this function once
+ // while single threaded
+ struct passwd *pw = getpwnam(web_owner);
+ if(!pw) {
+ error("User %s is not present. Ignoring option.", web_owner);
+ owner_uid = geteuid();
+ }
+ else {
+ debug(D_WEB_CLIENT, "Web files owner set to %s.\n", web_owner);
+ owner_uid = pw->pw_uid;
+ }
+ }
+ }
+
+ return(owner_uid);
+}
+
+gid_t web_files_gid(void)
+{
+ static char *web_group = NULL;
+ static gid_t owner_gid = 0;
+
+ if(unlikely(!web_group)) {
+ web_group = config_get("global", "web files group", config_get("global", "web files owner", ""));
+ if(!web_group || !*web_group)
+ owner_gid = getegid();
+ else {
+ // getgrnam() is not thread safe,
+ // but we have called this function once
+ // while single threaded
+ struct group *gr = getgrnam(web_group);
+ if(!gr) {
+ error("Group %s is not present. Ignoring option.", web_group);
+ owner_gid = getegid();
+ }
+ else {
+ debug(D_WEB_CLIENT, "Web files group set to %s.\n", web_group);
+ owner_gid = gr->gr_gid;
+ }
+ }
+ }
+
+ return(owner_gid);
+}
+
+int mysendfile(struct web_client *w, char *filename)
+{
+ static char *web_dir = NULL;
+
+ // initialize our static data
+ if(unlikely(!web_dir)) web_dir = config_get("global", "web files directory", WEB_DIR);
+
+ debug(D_WEB_CLIENT, "%llu: Looking for file '%s/%s'", w->id, web_dir, filename);
+
+ // skip leading slashes
+ while (*filename == '/') filename++;
+
+ // if the filename contain known paths, skip them
+ if(strncmp(filename, WEB_PATH_FILE "/", strlen(WEB_PATH_FILE) + 1) == 0) filename = &filename[strlen(WEB_PATH_FILE) + 1];
+
+ char *s;
+ for(s = filename; *s ;s++) {
+ if( !isalnum(*s) && *s != '/' && *s != '.' && *s != '-' && *s != '_') {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not acceptable.", w->id, filename);
+ buffer_sprintf(w->response.data, "File '%s' cannot be served. Filename contains invalid character '%c'", filename, *s);
+ return 400;
+ }
+ }
+
+ // if the filename contains a .. refuse to serve it
+ if(strstr(filename, "..") != 0) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not acceptable.", w->id, filename);
+ buffer_sprintf(w->response.data, "File '%s' cannot be served. Relative filenames with '..' in them are not supported.", filename);
+ return 400;
+ }
+
+ // access the file
+ char webfilename[FILENAME_MAX + 1];
+ snprintf(webfilename, FILENAME_MAX, "%s/%s", web_dir, filename);
+
+ // check if the file exists
+ struct stat stat;
+ if(lstat(webfilename, &stat) != 0) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not found.", w->id, webfilename);
+ buffer_sprintf(w->response.data, "File '%s' does not exist, or is not accessible.", webfilename);
+ return 404;
+ }
+
+ // check if the file is owned by expected user
+ if(stat.st_uid != web_files_uid()) {
+ error("%llu: File '%s' is owned by user %d (expected user %d). Access Denied.", w->id, webfilename, stat.st_uid, web_files_uid());
+ buffer_sprintf(w->response.data, "Access to file '%s' is not permitted.", webfilename);
+ return 403;
+ }
+
+ // check if the file is owned by expected group
+ if(stat.st_gid != web_files_gid()) {
+ error("%llu: File '%s' is owned by group %d (expected group %d). Access Denied.", w->id, webfilename, stat.st_gid, web_files_gid());
+ buffer_sprintf(w->response.data, "Access to file '%s' is not permitted.", webfilename);
+ return 403;
+ }
+
+ if((stat.st_mode & S_IFMT) == S_IFDIR) {
+ snprintf(webfilename, FILENAME_MAX+1, "%s/index.html", filename);
+ return mysendfile(w, webfilename);
+ }
+
+ if((stat.st_mode & S_IFMT) != S_IFREG) {
+ error("%llu: File '%s' is not a regular file. Access Denied.", w->id, webfilename);
+ buffer_sprintf(w->response.data, "Access to file '%s' is not permitted.", webfilename);
+ return 403;
+ }
+
+ // open the file
+ w->ifd = open(webfilename, O_NONBLOCK, O_RDONLY);
+ if(w->ifd == -1) {
+ w->ifd = w->ofd;
+
+ if(errno == EBUSY || errno == EAGAIN) {
+ error("%llu: File '%s' is busy, sending 307 Moved Temporarily to force retry.", w->id, webfilename);
+ buffer_sprintf(w->response.header, "Location: /" WEB_PATH_FILE "/%s\r\n", filename);
+ buffer_sprintf(w->response.data, "The file '%s' is currently busy. Please try again later.", webfilename);
+ return 307;
+ }
+ else {
+ error("%llu: Cannot open file '%s'.", w->id, webfilename);
+ buffer_sprintf(w->response.data, "Cannot open file '%s'.", webfilename);
+ return 404;
+ }
+ }
+
+ // pick a Content-Type for the file
+ if(strstr(filename, ".html") != NULL) w->response.data->contenttype = CT_TEXT_HTML;
+ else if(strstr(filename, ".js") != NULL) w->response.data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+ else if(strstr(filename, ".css") != NULL) w->response.data->contenttype = CT_TEXT_CSS;
+ else if(strstr(filename, ".xml") != NULL) w->response.data->contenttype = CT_TEXT_XML;
+ else if(strstr(filename, ".xsl") != NULL) w->response.data->contenttype = CT_TEXT_XSL;
+ else if(strstr(filename, ".txt") != NULL) w->response.data->contenttype = CT_TEXT_PLAIN;
+ else if(strstr(filename, ".svg") != NULL) w->response.data->contenttype = CT_IMAGE_SVG_XML;
+ else if(strstr(filename, ".ttf") != NULL) w->response.data->contenttype = CT_APPLICATION_X_FONT_TRUETYPE;
+ else if(strstr(filename, ".otf") != NULL) w->response.data->contenttype = CT_APPLICATION_X_FONT_OPENTYPE;
+ else if(strstr(filename, ".woff2")!= NULL) w->response.data->contenttype = CT_APPLICATION_FONT_WOFF2;
+ else if(strstr(filename, ".woff") != NULL) w->response.data->contenttype = CT_APPLICATION_FONT_WOFF;
+ else if(strstr(filename, ".eot") != NULL) w->response.data->contenttype = CT_APPLICATION_VND_MS_FONTOBJ;
+ else if(strstr(filename, ".png") != NULL) w->response.data->contenttype = CT_IMAGE_PNG;
+ else if(strstr(filename, ".jpg") != NULL) w->response.data->contenttype = CT_IMAGE_JPG;
+ else if(strstr(filename, ".jpeg") != NULL) w->response.data->contenttype = CT_IMAGE_JPG;
+ else if(strstr(filename, ".gif") != NULL) w->response.data->contenttype = CT_IMAGE_GIF;
+ else if(strstr(filename, ".bmp") != NULL) w->response.data->contenttype = CT_IMAGE_BMP;
+ else if(strstr(filename, ".ico") != NULL) w->response.data->contenttype = CT_IMAGE_XICON;
+ else if(strstr(filename, ".icns") != NULL) w->response.data->contenttype = CT_IMAGE_ICNS;
+ else w->response.data->contenttype = CT_APPLICATION_OCTET_STREAM;
+
+ 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);
+
+ w->mode = WEB_CLIENT_MODE_FILECOPY;
+ w->wait_receive = 1;
+ w->wait_send = 0;
+ buffer_flush(w->response.data);
+ w->response.rlen = stat.st_size;
+ w->response.data->date = stat.st_mtim.tv_sec;
+
+ return 200;
+}
+
+
+#ifdef NETDATA_WITH_ZLIB
+void web_client_enable_deflate(struct web_client *w) {
+ if(w->response.zinitialized == 1) {
+ error("%llu: Compression has already be initialized for this client.", w->id);
+ return;
+ }
+
+ if(w->response.sent) {
+ error("%llu: Cannot enable compression in the middle of a conversation.", w->id);
+ return;
+ }
+
+ w->response.zstream.zalloc = Z_NULL;
+ w->response.zstream.zfree = Z_NULL;
+ w->response.zstream.opaque = Z_NULL;
+
+ w->response.zstream.next_in = (Bytef *)w->response.data->buffer;
+ w->response.zstream.avail_in = 0;
+ w->response.zstream.total_in = 0;
+
+ w->response.zstream.next_out = w->response.zbuffer;
+ w->response.zstream.avail_out = 0;
+ w->response.zstream.total_out = 0;
+
+ w->response.zstream.zalloc = Z_NULL;
+ w->response.zstream.zfree = Z_NULL;
+ w->response.zstream.opaque = Z_NULL;
+
+// if(deflateInit(&w->response.zstream, Z_DEFAULT_COMPRESSION) != Z_OK) {
+// error("%llu: Failed to initialize zlib. Proceeding without compression.", w->id);
+// return;
+// }
+
+ // Select GZIP compression: windowbits = 15 + 16 = 31
+ if(deflateInit2(&w->response.zstream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 31, 8, Z_DEFAULT_STRATEGY) != Z_OK) {
+ error("%llu: Failed to initialize zlib. Proceeding without compression.", w->id);
+ return;
+ }
+
+ w->response.zsent = 0;
+ w->response.zoutput = 1;
+ w->response.zinitialized = 1;
+
+ debug(D_DEFLATE, "%llu: Initialized compression.", w->id);
+}
+#endif // NETDATA_WITH_ZLIB
+
+uint32_t web_client_api_request_v1_data_options(char *o)
+{
+ uint32_t ret = 0x00000000;
+ char *tok;
+
+ while(o && *o && (tok = mystrsep(&o, ", |"))) {
+ if(!*tok) continue;
+
+ if(!strcmp(tok, "nonzero"))
+ ret |= RRDR_OPTION_NONZERO;
+ else if(!strcmp(tok, "flip") || !strcmp(tok, "reversed") || !strcmp(tok, "reverse"))
+ ret |= RRDR_OPTION_REVERSED;
+ else if(!strcmp(tok, "jsonwrap"))
+ ret |= RRDR_OPTION_JSON_WRAP;
+ else if(!strcmp(tok, "min2max"))
+ ret |= RRDR_OPTION_MIN2MAX;
+ else if(!strcmp(tok, "ms") || !strcmp(tok, "milliseconds"))
+ ret |= RRDR_OPTION_MILLISECONDS;
+ else if(!strcmp(tok, "abs") || !strcmp(tok, "absolute") || !strcmp(tok, "absolute_sum") || !strcmp(tok, "absolute-sum"))
+ ret |= RRDR_OPTION_ABSOLUTE;
+ else if(!strcmp(tok, "seconds"))
+ ret |= RRDR_OPTION_SECONDS;
+ else if(!strcmp(tok, "null2zero"))
+ ret |= RRDR_OPTION_NULL2ZERO;
+ else if(!strcmp(tok, "objectrows"))
+ ret |= RRDR_OPTION_OBJECTSROWS;
+ else if(!strcmp(tok, "google_json"))
+ ret |= RRDR_OPTION_GOOGLE_JSON;
+ else if(!strcmp(tok, "percentage"))
+ ret |= RRDR_OPTION_PERCENTAGE;
+ }
+
+ return ret;
+}
+
+uint32_t web_client_api_request_v1_data_format(char *name)
+{
+ if(!strcmp(name, DATASOURCE_FORMAT_DATATABLE_JSON)) // datatable
+ return DATASOURCE_DATATABLE_JSON;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_DATATABLE_JSONP)) // datasource
+ return DATASOURCE_DATATABLE_JSONP;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_JSON)) // json
+ return DATASOURCE_JSON;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_JSONP)) // jsonp
+ return DATASOURCE_JSONP;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_SSV)) // ssv
+ return DATASOURCE_SSV;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_CSV)) // csv
+ return DATASOURCE_CSV;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_TSV) || !strcmp(name, "tsv-excel")) // tsv
+ return DATASOURCE_TSV;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_HTML)) // html
+ return DATASOURCE_HTML;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_JS_ARRAY)) // array
+ return DATASOURCE_JS_ARRAY;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_SSV_COMMA)) // ssvcomma
+ return DATASOURCE_SSV_COMMA;
+
+ else if(!strcmp(name, DATASOURCE_FORMAT_CSV_JSON_ARRAY)) // csvjsonarray
+ return DATASOURCE_CSV_JSON_ARRAY;
+
+ return DATASOURCE_JSON;
+}
+
+uint32_t web_client_api_request_v1_data_google_format(char *name)
+{
+ if(!strcmp(name, "json"))
+ return DATASOURCE_DATATABLE_JSONP;
+
+ else if(!strcmp(name, "html"))
+ return DATASOURCE_HTML;
+
+ else if(!strcmp(name, "csv"))
+ return DATASOURCE_CSV;
+
+ else if(!strcmp(name, "tsv-excel"))
+ return DATASOURCE_TSV;
+
+ return DATASOURCE_JSON;
+}
+
+int web_client_api_request_v1_data_group(char *name)
+{
+ if(!strcmp(name, "max"))
+ return GROUP_MAX;
+
+ else if(!strcmp(name, "average"))
+ return GROUP_AVERAGE;
+
+ return GROUP_MAX;
+}
+
+int web_client_api_request_v1_charts(struct web_client *w, char *url)
+{
+ if(url) { ; }
+
+ buffer_flush(w->response.data);
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ rrd_stats_api_v1_charts(w->response.data);
+ return 200;
+}
+
+int web_client_api_request_v1_chart(struct web_client *w, char *url)
+{
+ int ret = 400;
+ char *chart = NULL;
+
+ buffer_flush(w->response.data);
+
+ while(url) {
+ char *value = mystrsep(&url, "?&[]");
+ if(!value || !*value) continue;
+
+ char *name = mystrsep(&value, "=");
+ if(!name || !*name) continue;
+ if(!value || !*value) continue;
+
+ // name and value are now the parameters
+ // they are not null and not empty
+
+ if(!strcmp(name, "chart")) chart = value;
+ //else {
+ /// buffer_sprintf(w->response.data, "Unknown parameter '%s' in request.", name);
+ // goto cleanup;
+ //}
+ }
+
+ if(!chart || !*chart) {
+ buffer_sprintf(w->response.data, "No chart id is given at the request.");
+ goto cleanup;
+ }
+
+ RRDSET *st = rrdset_find(chart);
+ if(!st) st = rrdset_find_byname(chart);
+ if(!st) {
+ buffer_sprintf(w->response.data, "Chart '%s' is not found.", chart);
+ ret = 404;
+ goto cleanup;
+ }
+
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ rrd_stats_api_v1_chart(st, w->response.data);
+ return 200;
+
+cleanup:
+ return ret;
+}
+
+// returns the HTTP code
+int web_client_api_request_v1_data(struct web_client *w, char *url)
+{
+ debug(D_WEB_CLIENT, "%llu: API v1 data with URL '%s'", w->id, url);
+
+ int ret = 400;
+ BUFFER *dimensions = NULL;
+
+ buffer_flush(w->response.data);
+
+ char *google_version = "0.6",
+ *google_reqId = "0",
+ *google_sig = "0",
+ *google_out = "json",
+ *responseHandler = NULL,
+ *outFileName = NULL;
+
+ time_t last_timestamp_in_data = 0, google_timestamp = 0;
+
+ char *chart = NULL
+ , *before_str = NULL
+ , *after_str = NULL
+ , *points_str = NULL;
+
+ int group = GROUP_MAX;
+ uint32_t format = DATASOURCE_JSON;
+ uint32_t options = 0x00000000;
+
+ while(url) {
+ char *value = mystrsep(&url, "?&[]");
+ if(!value || !*value) continue;
+
+ char *name = mystrsep(&value, "=");
+ if(!name || !*name) continue;
+ if(!value || !*value) continue;
+
+ debug(D_WEB_CLIENT, "%llu: API v1 data query param '%s' with value '%s'", w->id, name, value);
+
+ // name and value are now the parameters
+ // they are not null and not empty
+
+ if(!strcmp(name, "chart")) chart = value;
+ else if(!strcmp(name, "dimension") || !strcmp(name, "dim") || !strcmp(name, "dimensions") || !strcmp(name, "dims")) {
+ if(!dimensions) dimensions = buffer_create(strlen(value));
+ if(dimensions) {
+ buffer_strcat(dimensions, "|");
+ buffer_strcat(dimensions, value);
+ }
+ }
+ else if(!strcmp(name, "after")) after_str = value;
+ else if(!strcmp(name, "before")) before_str = value;
+ else if(!strcmp(name, "points")) points_str = value;
+ else if(!strcmp(name, "group")) {
+ group = web_client_api_request_v1_data_group(value);
+ }
+ else if(!strcmp(name, "format")) {
+ format = web_client_api_request_v1_data_format(value);
+ }
+ else if(!strcmp(name, "options")) {
+ options |= web_client_api_request_v1_data_options(value);
+ }
+ else if(!strcmp(name, "callback")) {
+ responseHandler = value;
+ }
+ else if(!strcmp(name, "filename")) {
+ outFileName = value;
+ }
+ else if(!strcmp(name, "tqx")) {
+ // parse Google Visualization API options
+ // https://developers.google.com/chart/interactive/docs/dev/implementing_data_source
+ char *tqx_name, *tqx_value;
+
+ while(value) {
+ tqx_value = mystrsep(&value, ";");
+ if(!tqx_value || !*tqx_value) continue;
+
+ tqx_name = mystrsep(&tqx_value, ":");
+ if(!tqx_name || !*tqx_name) continue;
+ if(!tqx_value || !*tqx_value) continue;
+
+ if(!strcmp(tqx_name, "version"))
+ google_version = tqx_value;
+ else if(!strcmp(tqx_name, "reqId"))
+ google_reqId = tqx_value;
+ else if(!strcmp(tqx_name, "sig")) {
+ google_sig = tqx_value;
+ google_timestamp = strtoul(google_sig, NULL, 0);
+ }
+ else if(!strcmp(tqx_name, "out")) {
+ google_out = tqx_value;
+ format = web_client_api_request_v1_data_google_format(google_out);
+ }
+ else if(!strcmp(tqx_name, "responseHandler"))
+ responseHandler = tqx_value;
+ else if(!strcmp(tqx_name, "outFileName"))
+ outFileName = tqx_value;
+ }
+ }
+ }
+
+ if(!chart || !*chart) {
+ buffer_sprintf(w->response.data, "No chart id is given at the request.");
+ goto cleanup;
+ }
+
+ RRDSET *st = rrdset_find(chart);
+ if(!st) st = rrdset_find_byname(chart);
+ if(!st) {
+ buffer_sprintf(w->response.data, "Chart '%s' is not found.", chart);
+ ret = 404;
+ goto cleanup;
+ }
+
+ long long before = (before_str && *before_str)?atol(before_str):0;
+ long long after = (after_str && *after_str) ?atol(after_str):0;
+ int points = (points_str && *points_str)?atoi(points_str):0;
+
+ debug(D_WEB_CLIENT, "%llu: API command 'data' for chart '%s', dimensions '%s', after '%lld', before '%lld', points '%d', group '%u', format '%u', options '0x%08x'"
+ , w->id
+ , chart
+ , (dimensions)?buffer_tostring(dimensions):""
+ , after
+ , before
+ , points
+ , group
+ , format
+ , options
+ );
+
+ if(outFileName && *outFileName) {
+ buffer_sprintf(w->response.header, "Content-Disposition: attachment; filename=\"%s\"\r\n", outFileName);
+ error("generating outfilename header: '%s'", outFileName);
+ }
+
+ if(format == DATASOURCE_DATATABLE_JSONP) {
+ if(responseHandler == NULL)
+ responseHandler = "google.visualization.Query.setResponse";
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: GOOGLE JSON/JSONP: version = '%s', reqId = '%s', sig = '%s', out = '%s', responseHandler = '%s', outFileName = '%s'",
+ w->id, google_version, google_reqId, google_sig, google_out, responseHandler, outFileName
+ );
+
+ buffer_sprintf(w->response.data,
+ "%s({version:'%s',reqId:'%s',status:'ok',sig:'%lu',table:",
+ responseHandler, google_version, google_reqId, st->last_updated.tv_sec);
+ }
+ else if(format == DATASOURCE_JSONP) {
+ if(responseHandler == NULL)
+ responseHandler = "callback";
+
+ buffer_strcat(w->response.data, responseHandler);
+ buffer_strcat(w->response.data, "(");
+ }
+
+ ret = rrd2format(st, w->response.data, dimensions, format, points, after, before, group, options, &last_timestamp_in_data);
+
+ if(format == DATASOURCE_DATATABLE_JSONP) {
+ if(google_timestamp < last_timestamp_in_data)
+ buffer_strcat(w->response.data, "});");
+
+ else {
+ // the client already has the latest data
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data,
+ "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'not_modified',message:'Data not modified'}]});",
+ responseHandler, google_version, google_reqId);
+ }
+ }
+ else if(format == DATASOURCE_JSONP)
+ buffer_strcat(w->response.data, ");");
+
+cleanup:
+ if(dimensions) buffer_free(dimensions);
+ return ret;
+}
+
+int web_client_api_request_v1_registry(struct web_client *w, char *url)
+{
+ char person_guid[36 + 1] = "";
+
+ debug(D_WEB_CLIENT, "%llu: API v1 registry with URL '%s'", w->id, url);
+
+ char *cookie = strstr(w->response.data->buffer, " " NETDATA_REGISTRY_COOKIE_NAME "=");
+ if(cookie) {
+ strncpy(person_guid, &cookie[sizeof(NETDATA_REGISTRY_COOKIE_NAME) + 1], 36);
+ person_guid[36] = '\0';
+ }
+
+ char action = '\0';
+ char *machine_guid = NULL,
+ *machine_url = NULL,
+ *url_name = NULL,
+ *search_machine_guid = NULL,
+ *delete_url = NULL;
+
+ while(url) {
+ char *value = mystrsep(&url, "?&[]");
+ if (!value || !*value) continue;
+
+ char *name = mystrsep(&value, "=");
+ if (!name || !*name) continue;
+ if (!value || !*value) continue;
+
+ debug(D_WEB_CLIENT, "%llu: API v1 registry query param '%s' with value '%s'", w->id, name, value);
+
+ if(!strcmp(name, "action")) {
+ if(!strcmp(value, "access")) action = 'A';
+ else if(!strcmp(value, "delete")) action = 'D';
+ else if(!strcmp(value, "search")) action = 'S';
+ }
+ else if(!strcmp(name, "machine"))
+ machine_guid = value;
+
+ else if(!strcmp(name, "url"))
+ machine_url = value;
+
+ else if(action == 'A') {
+ if(!strcmp(name, "name"))
+ url_name = value;
+ }
+ else if(action == 'D') {
+ if(!strcmp(name, "delete_url"))
+ delete_url = value;
+ }
+ else if(action == 'S') {
+ if(!strcmp(name, "for"))
+ search_machine_guid = value;
+ }
+ }
+
+ if((!action || !machine_guid || !machine_url) || (action == 'A' && !url_name) || (action == 'D' && !delete_url) || (action == 'S' && !search_machine_guid)) {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid registry request - required parameters missing.");
+ return 400;
+ }
+
+ switch(action) {
+ case 'A':
+ return registry_request_access_json(w, person_guid, machine_guid, machine_url, url_name, time(NULL));
+
+ case 'D':
+ return registry_request_delete_json(w, person_guid, machine_guid, machine_url, delete_url, time(NULL));
+
+ case 'S':
+ return registry_request_search_json(w, person_guid, machine_guid, machine_url, search_machine_guid, time(NULL));
+ }
+
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid or no registry action.");
+ return 400;
+}
+
+int web_client_api_request_v1(struct web_client *w, char *url)
+{
+ static uint32_t data_hash = 0, chart_hash = 0, charts_hash = 0, registry_hash = 0;
+
+ if(unlikely(data_hash == 0)) {
+ data_hash = simple_hash("data");
+ chart_hash = simple_hash("chart");
+ charts_hash = simple_hash("charts");
+ registry_hash = simple_hash("registry");
+ }
+
+ // get the command
+ char *tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for API v1 command '%s'.", w->id, tok);
+ uint32_t hash = simple_hash(tok);
+
+ if(hash == data_hash && !strcmp(tok, "data"))
+ return web_client_api_request_v1_data(w, url);
+
+ else if(hash == chart_hash && !strcmp(tok, "chart"))
+ return web_client_api_request_v1_chart(w, url);
+
+ else if(hash == charts_hash && !strcmp(tok, "charts"))
+ return web_client_api_request_v1_charts(w, url);
+
+ else if(hash == registry_hash && !strcmp(tok, "registry"))
+ return web_client_api_request_v1_registry(w, url);
+
+ else {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Unsupported v1 API command: %s", tok);
+ return 404;
+ }
+ }
+ else {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "API v1 command?");
+ return 400;
+ }
+}
+
+int web_client_api_request(struct web_client *w, char *url)
+{
+ // get the api version
+ char *tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for API version '%s'.", w->id, tok);
+ if(strcmp(tok, "v1") == 0)
+ return web_client_api_request_v1(w, url);
+ else {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Unsupported API version: %s", tok);
+ return 404;
+ }
+ }
+ else {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Which API version?");
+ return 400;
+ }
+}
+
+int web_client_data_request(struct web_client *w, char *url, int datasource_type)
+{
+ RRDSET *st = NULL;
+
+ char *args = strchr(url, '?');
+ if(args) {
+ *args='\0';
+ args = &args[1];
+ }
+
+ // get the name of the data to show
+ char *tok = mystrsep(&url, "/");
+
+ // do we have such a data set?
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
+ st = rrdset_find_byname(tok);
+ if(!st) st = rrdset_find(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));
+ }
+
+ // we have it
+ debug(D_WEB_CLIENT, "%llu: Found RRD data with name '%s'.", w->id, tok);
+
+ // how many entries does the client want?
+ long lines = rrd_default_history_entries;
+ long group_count = 1;
+ time_t after = 0, before = 0;
+ int group_method = GROUP_AVERAGE;
+ int nonzero = 0;
+
+ if(url) {
+ // parse the lines required
+ tok = mystrsep(&url, "/");
+ if(tok) lines = atoi(tok);
+ if(lines < 1) lines = 1;
+ }
+ if(url) {
+ // parse the group count required
+ tok = mystrsep(&url, "/");
+ if(tok && *tok) group_count = atoi(tok);
+ if(group_count < 1) group_count = 1;
+ //if(group_count > save_history / 20) group_count = save_history / 20;
+ }
+ if(url) {
+ // parse the grouping method required
+ tok = mystrsep(&url, "/");
+ if(tok && *tok) {
+ if(strcmp(tok, "max") == 0) group_method = GROUP_MAX;
+ else if(strcmp(tok, "average") == 0) group_method = GROUP_AVERAGE;
+ else if(strcmp(tok, "sum") == 0) group_method = GROUP_SUM;
+ else debug(D_WEB_CLIENT, "%llu: Unknown group method '%s'", w->id, tok);
+ }
+ }
+ if(url) {
+ // parse after time
+ tok = mystrsep(&url, "/");
+ if(tok && *tok) after = strtoul(tok, NULL, 10);
+ if(after < 0) after = 0;
+ }
+ if(url) {
+ // parse before time
+ tok = mystrsep(&url, "/");
+ if(tok && *tok) before = strtoul(tok, NULL, 10);
+ if(before < 0) before = 0;
+ }
+ if(url) {
+ // parse nonzero
+ tok = mystrsep(&url, "/");
+ if(tok && *tok && strcmp(tok, "nonzero") == 0) nonzero = 1;
+ }
+
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ buffer_flush(w->response.data);
+
+ char *google_version = "0.6";
+ char *google_reqId = "0";
+ char *google_sig = "0";
+ char *google_out = "json";
+ char *google_responseHandler = "google.visualization.Query.setResponse";
+ char *google_outFileName = NULL;
+ time_t last_timestamp_in_data = 0;
+ if(datasource_type == DATASOURCE_DATATABLE_JSON || datasource_type == DATASOURCE_DATATABLE_JSONP) {
+
+ w->response.data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+
+ while(args) {
+ tok = mystrsep(&args, "&");
+ if(tok && *tok) {
+ char *name = mystrsep(&tok, "=");
+ if(name && *name && strcmp(name, "tqx") == 0) {
+ char *key = mystrsep(&tok, ":");
+ char *value = mystrsep(&tok, ";");
+ if(key && value && *key && *value) {
+ if(strcmp(key, "version") == 0)
+ google_version = value;
+
+ else if(strcmp(key, "reqId") == 0)
+ google_reqId = value;
+
+ else if(strcmp(key, "sig") == 0)
+ google_sig = value;
+
+ else if(strcmp(key, "out") == 0)
+ google_out = value;
+
+ else if(strcmp(key, "responseHandler") == 0)
+ google_responseHandler = value;
+
+ else if(strcmp(key, "outFileName") == 0)
+ google_outFileName = value;
+ }
+ }
+ }
+ }
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: GOOGLE JSONP: version = '%s', reqId = '%s', sig = '%s', out = '%s', responseHandler = '%s', outFileName = '%s'",
+ w->id, google_version, google_reqId, google_sig, google_out, google_responseHandler, google_outFileName
+ );
+
+ if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
+ last_timestamp_in_data = strtoul(google_sig, NULL, 0);
+
+ // check the client wants json
+ if(strcmp(google_out, "json") != 0) {
+ buffer_sprintf(w->response.data,
+ "%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.'}]});",
+ google_responseHandler, google_version, google_reqId, google_out);
+ return 200;
+ }
+ }
+ }
+
+ if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
+ buffer_sprintf(w->response.data,
+ "%s({version:'%s',reqId:'%s',status:'ok',sig:'%lu',table:",
+ google_responseHandler, google_version, google_reqId, st->last_updated.tv_sec);
+ }
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending RRD data '%s' (id %s, %d lines, %d group, %d group_method, %lu after, %lu before).", w->id, st->name, st->id, lines, group_count, group_method, after, before);
+ time_t timestamp_in_data = rrd_stats_json(datasource_type, st, w->response.data, lines, group_count, group_method, after, before, nonzero);
+
+ if(datasource_type == DATASOURCE_DATATABLE_JSONP) {
+ if(timestamp_in_data > last_timestamp_in_data)
+ buffer_strcat(w->response.data, "});");
+
+ else {
+ // the client already has the latest data
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data,
+ "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'not_modified',message:'Data not modified'}]});",
+ google_responseHandler, google_version, google_reqId);
+ }
+ }
+
+ return 200;
+}
+
+/*
+int web_client_parse_request(struct web_client *w) {
+ // protocol
+ // hostname
+ // path
+ // query string name-value
+ // http version
+ // method
+ // http request headers name-value
+
+ web_client_clean_request(w);
+
+ debug(D_WEB_DATA, "%llu: Processing data buffer of %d bytes: '%s'.", w->id, w->response.data->bytes, w->response.data->buffer);
+
+ char *buf = w->response.data->buffer;
+ char *line, *tok;
+
+ // ------------------------------------------------------------------------
+ // the first line
+
+ if(buf && (line = strsep(&buf, "\r\n"))) {
+ // method
+ if(line && (tok = strsep(&line, " "))) {
+ w->request.protocol = strdup(tok);
+ }
+ else goto cleanup;
+
+ // url
+ }
+ else goto cleanup;
+
+ // ------------------------------------------------------------------------
+ // the rest of the lines
+
+ while(buf && (line = strsep(&buf, "\r\n"))) {
+ while(line && (tok = strsep(&line, ": "))) {
+ }
+ }
+
+ char *url = NULL;
+
+
+cleanup:
+ web_client_clean_request(w);
+ return 0;
+}
+*/
+
+// get the request buffer, just after the GET or OPTIONS
+// and find the url to be decoded, decode it and return
+// a newly allocated buffer with it
+static inline char *find_url_and_decode_it(char *request) {
+ char *e = request, *url = NULL;
+
+ // find the SPACE + "HTTP/"
+ while(*e) {
+ // find the space
+ while (*e && *e != ' ') e++;
+
+ // is it SPACE + "HTTP/" ?
+ if(*e && !strncmp(e, " HTTP/", 6))
+ break;
+ }
+
+ if(*e) {
+ // we have the end
+ *e = '\0';
+ url = url_decode(request);
+ *e = ' ';
+ }
+
+ return url;
+}
+
+void web_client_process(struct web_client *w) {
+ int code = 500;
+ ssize_t bytes;
+ int enable_gzip = 0;
+
+ w->wait_receive = 0;
+
+ // check if we have an empty line (end of HTTP header)
+ if(strstr(w->response.data->buffer, "\r\n\r\n")) {
+ global_statistics_lock();
+ global_statistics.web_requests++;
+ global_statistics_unlock();
+
+ gettimeofday(&w->tv_in, NULL);
+ debug(D_WEB_DATA, "%llu: Processing data buffer of %d bytes: '%s'.", w->id, w->response.data->len, w->response.data->buffer);
+
+ // check if the client requested keep-alive HTTP
+ if(strcasestr(w->response.data->buffer, "Connection: keep-alive")) w->keepalive = 1;
+ else w->keepalive = 0;
+
+#ifdef NETDATA_WITH_ZLIB
+ // check if the client accepts deflate
+ if(web_enable_gzip && strstr(w->response.data->buffer, "gzip"))
+ enable_gzip = 1;
+#endif // NETDATA_WITH_ZLIB
+
+ w->mode = WEB_CLIENT_MODE_NORMAL;
+
+ char *tok = (char *)buffer_tostring(w->response.data);
+ char *url = NULL, *encoded_url = NULL;
+ char *pointer_to_free = NULL; // keep url_decode() allocated buffer
+
+ if(!strncmp(tok, "GET ", 4))
+ encoded_url = &tok[4];
+ else if(!strncmp(tok, "OPTIONS ", 8)) {
+ encoded_url = &tok[8];
+ w->mode = WEB_CLIENT_MODE_OPTIONS;
+ }
+
+ if(encoded_url) {
+ pointer_to_free = url = find_url_and_decode_it(encoded_url);
+
+ if(url) debug(D_WEB_CLIENT, "%llu: Processing url '%s'.", w->id, url);
+ else debug(D_WEB_CLIENT, "%llu: Cannot find a valid URL in '%s'", w->id, encoded_url);
+ }
+
+ w->last_url[0] = '\0';
+
+ if(w->mode == WEB_CLIENT_MODE_OPTIONS) {
+ strncpy(w->last_url, url, URL_MAX);
+ w->last_url[URL_MAX] = '\0';
+
+ code = 200;
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "OK");
+ }
+ else if(url) {
+#ifdef NETDATA_WITH_ZLIB
+ if(enable_gzip)
+ web_client_enable_deflate(w);
+#endif
+
+ strncpy(w->last_url, url, URL_MAX);
+ w->last_url[URL_MAX] = '\0';
+
+ tok = mystrsep(&url, "/?");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Processing command '%s'.", w->id, tok);
+
+ if(strcmp(tok, "api") == 0) {
+ // the client is requesting api access
+ code = web_client_api_request(w, url);
+ }
+#ifdef NETDATA_INTERNAL_CHECKS
+ else if(strcmp(tok, "exit") == 0) {
+ code = 200;
+ 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");
+
+ netdata_exit = 1;
+ }
+#endif
+ else if(strcmp(tok, WEB_PATH_DATA) == 0) { // "data"
+ // the client is requesting rrd data
+ code = web_client_data_request(w, url, DATASOURCE_JSON);
+ }
+ else if(strcmp(tok, WEB_PATH_DATASOURCE) == 0) { // "datasource"
+ // the client is requesting google datasource
+ code = web_client_data_request(w, url, DATASOURCE_DATATABLE_JSONP);
+ }
+ else if(strcmp(tok, WEB_PATH_GRAPH) == 0) { // "graph"
+ // the client is requesting an rrd graph
+
+ // 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(tok);
+ if(!st) st = rrdset_find(tok);
+ if(!st) {
+ // we don't have it
+ // try to send a file with that name
+ buffer_flush(w->response.data);
+ code = mysendfile(w, tok);
+ }
+ else {
+ code = 200;
+ 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);
+ }
+ }
+ else {
+ code = 400;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "Graph name?\r\n");
+ }
+ }
+#ifdef NETDATA_INTERNAL_CHECKS
+ else if(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(tok);
+ if(!st) st = rrdset_find(tok);
+ if(!st) {
+ code = 404;
+ buffer_sprintf(w->response.data, "Chart %s is not found.\r\n", tok);
+ debug(D_WEB_CLIENT_ACCESS, "%llu: %s is not found.", w->id, tok);
+ }
+ else {
+ code = 200;
+ debug_flags |= D_RRD_STATS;
+ st->debug = st->debug?0:1;
+ buffer_sprintf(w->response.data, "Chart %s has now debug %s.\r\n", tok, st->debug?"enabled":"disabled");
+ debug(D_WEB_CLIENT_ACCESS, "%llu: debug for %s is %s.", w->id, tok, st->debug?"enabled":"disabled");
+ }
+ }
+ else {
+ code = 500;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "debug which chart?\r\n");
+ }
+ }
+ else if(strcmp(tok, "mirror") == 0) {
+ code = 200;
+
+ 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
+ }
+#endif
+ else if(strcmp(tok, "list") == 0) {
+ code = 200;
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending list of RRD_STATS...", w->id);
+
+ buffer_flush(w->response.data);
+ RRDSET *st = rrdset_root;
+
+ for ( ; st ; st = st->next )
+ buffer_sprintf(w->response.data, "%s\n", st->name);
+ }
+ else if(strcmp(tok, "all.json") == 0) {
+ code = 200;
+ 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(w->response.data);
+ }
+ else if(strcmp(tok, "netdata.conf") == 0) {
+ code = 200;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending netdata.conf ...", w->id);
+
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+ generate_config(w->response.data, 0);
+ }
+ else {
+ char filename[FILENAME_MAX+1];
+ url = filename;
+ strncpy(filename, w->last_url, FILENAME_MAX);
+ filename[FILENAME_MAX] = '\0';
+ tok = mystrsep(&url, "?");
+ buffer_flush(w->response.data);
+ code = mysendfile(w, (tok && *tok)?tok:"/");
+ }
+ }
+ else {
+ char filename[FILENAME_MAX+1];
+ url = filename;
+ strncpy(filename, w->last_url, FILENAME_MAX);
+ filename[FILENAME_MAX] = '\0';
+ tok = mystrsep(&url, "?");
+ buffer_flush(w->response.data);
+ code = mysendfile(w, (tok && *tok)?tok:"/");
+ }
+ }
+ else {
+ strcpy(w->last_url, "not a valid response");
+
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Cannot understand '%s'.", w->id, w->response.data->buffer);
+
+ code = 500;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "I don't understand you...\r\n");
+ }
+
+ // free url_decode() buffer
+ if(pointer_to_free) {
+ free(pointer_to_free);
+ pointer_to_free = NULL;
+ }
+ }
+ else 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 (%zd bytes).", w->id, w->response.data->len);
+
+ code = 400;
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Received request is too big (%zd bytes).\r\n", w->response.data->len);
+ }
+ else {
+ // wait for more data
+ w->wait_receive = 1;
+ return;
+ }
+
+ gettimeofday(&w->tv_ready, NULL);
+ w->response.data->date = time(NULL);
+ w->response.sent = 0;
+ w->response.code = code;
+
+ // prepare the HTTP response header
+ debug(D_WEB_CLIENT, "%llu: Generating HTTP header with response %d.", w->id, code);
+
+ char *content_type_string;
+ switch(w->response.data->contenttype) {
+ case CT_TEXT_HTML:
+ content_type_string = "text/html; charset=utf-8";
+ break;
+
+ case CT_APPLICATION_XML:
+ content_type_string = "application/xml; charset=utf-8";
+ break;
+
+ case CT_APPLICATION_JSON:
+ content_type_string = "application/json; charset=utf-8";
+ break;
+
+ case CT_APPLICATION_X_JAVASCRIPT:
+ content_type_string = "application/x-javascript; charset=utf-8";
+ break;
+
+ case CT_TEXT_CSS:
+ content_type_string = "text/css; charset=utf-8";
+ break;
+
+ case CT_TEXT_XML:
+ content_type_string = "text/xml; charset=utf-8";
+ break;
+
+ case CT_TEXT_XSL:
+ content_type_string = "text/xsl; charset=utf-8";
+ break;
+
+ case CT_APPLICATION_OCTET_STREAM:
+ content_type_string = "application/octet-stream";
+ break;
+
+ case CT_IMAGE_SVG_XML:
+ content_type_string = "image/svg+xml";
+ break;
+
+ case CT_APPLICATION_X_FONT_TRUETYPE:
+ content_type_string = "application/x-font-truetype";
+ break;
+
+ case CT_APPLICATION_X_FONT_OPENTYPE:
+ content_type_string = "application/x-font-opentype";
+ break;
+
+ case CT_APPLICATION_FONT_WOFF:
+ content_type_string = "application/font-woff";
+ break;
+
+ case CT_APPLICATION_FONT_WOFF2:
+ content_type_string = "application/font-woff2";
+ break;
+
+ case CT_APPLICATION_VND_MS_FONTOBJ:
+ content_type_string = "application/vnd.ms-fontobject";
+ break;
+
+ case CT_IMAGE_PNG:
+ content_type_string = "image/png";
+ break;
+
+ case CT_IMAGE_JPG:
+ content_type_string = "image/jpeg";
+ break;
+
+ case CT_IMAGE_GIF:
+ content_type_string = "image/gif";
+ break;
+
+ case CT_IMAGE_XICON:
+ content_type_string = "image/x-icon";
+ break;
+
+ case CT_IMAGE_BMP:
+ content_type_string = "image/bmp";
+ break;
+
+ case CT_IMAGE_ICNS:
+ content_type_string = "image/icns";
+ break;
+
+ default:
+ case CT_TEXT_PLAIN:
+ content_type_string = "text/plain; charset=utf-8";
+ break;
+ }
+
+ char *code_msg;
+ switch(code) {
+ case 200:
+ code_msg = "OK";
+ break;
+
+ case 307:
+ code_msg = "Temporary Redirect";
+ break;
+
+ case 400:
+ code_msg = "Bad Request";
+ break;
+
+ case 403:
+ code_msg = "Forbidden";
+ break;
+
+ case 404:
+ code_msg = "Not Found";
+ break;
+
+ default:
+ code_msg = "Internal Server Error";
+ break;
+ }
+
+ char date[100];
+ struct tm tmbuf, *tm = gmtime_r(&w->response.data->date, &tmbuf);
+ strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S %Z", tm);
+
+ buffer_sprintf(w->response.header_output,
+ "HTTP/1.1 %d %s\r\n"
+ "Connection: %s\r\n"
+ "Server: NetData Embedded HTTP Server\r\n"
+ "Access-Control-Allow-Origin: *\r\n"
+ "Content-Type: %s\r\n"
+ "Date: %s\r\n"
+ , code, code_msg
+ , w->keepalive?"keep-alive":"close"
+ , content_type_string
+ , date
+ );
+
+ if(w->cookie[0]) {
+ buffer_sprintf(w->response.header_output,
+ "Set-Cookie: %s\r\n",
+ w->cookie);
+ }
+
+ if(w->mode == WEB_CLIENT_MODE_OPTIONS) {
+ buffer_strcat(w->response.header_output,
+ "Access-Control-Allow-Methods: GET, OPTIONS\r\n"
+ "Access-Control-Allow-Credentials: true\r\n"
+ "Access-Control-Allow-Headers: Accept, X-Requested-With, Content-Type, Cookie\r\n"
+ "Access-Control-Max-Age: 1209600\r\n" // 86400 * 14
+ );
+ }
+
+ if(buffer_strlen(w->response.header))
+ buffer_strcat(w->response.header_output, buffer_tostring(w->response.header));
+
+ if(w->mode == WEB_CLIENT_MODE_NORMAL && (w->response.data->options & WB_CONTENT_NO_CACHEABLE)) {
+ buffer_sprintf(w->response.header_output,
+ "Expires: %s\r\n"
+ "Cache-Control: no-cache\r\n"
+ , date);
+ }
+ else if(w->mode != WEB_CLIENT_MODE_OPTIONS) {
+ char edate[100];
+ time_t et = w->response.data->date + (86400 * 14);
+ struct tm etmbuf, *etm = gmtime_r(&et, &etmbuf);
+ strftime(edate, sizeof(edate), "%a, %d %b %Y %H:%M:%S %Z", etm);
+
+ buffer_sprintf(w->response.header_output,
+ "Expires: %s\r\n"
+ "Cache-Control: public\r\n"
+ , edate);
+ }
+
+ // if we know the content length, put it
+ if(!w->response.zoutput && (w->response.data->len || w->response.rlen))
+ buffer_sprintf(w->response.header_output,
+ "Content-Length: %ld\r\n"
+ , w->response.data->len? w->response.data->len: w->response.rlen
+ );
+ else if(!w->response.zoutput)
+ w->keepalive = 0; // content-length is required for keep-alive
+
+ if(w->response.zoutput) {
+ buffer_strcat(w->response.header_output,
+ "Content-Encoding: gzip\r\n"
+ "Transfer-Encoding: chunked\r\n"
+ );
+ }
+
+ buffer_strcat(w->response.header_output, "\r\n");
+
+ // disable TCP_NODELAY, to buffer the header
+ int flag = 0;
+ if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0)
+ error("%llu: failed to disable TCP_NODELAY on socket.", w->id);
+
+ // sent the HTTP header
+ debug(D_WEB_DATA, "%llu: Sending response HTTP header of size %d: '%s'"
+ , w->id
+ , buffer_strlen(w->response.header_output)
+ , buffer_tostring(w->response.header_output)
+ );
+
+ bytes = send(w->ofd, buffer_tostring(w->response.header_output), buffer_strlen(w->response.header_output), 0);
+ if(bytes != (ssize_t) buffer_strlen(w->response.header_output))
+ error("%llu: HTTP Header failed to be sent (I sent %d bytes but the system sent %d bytes)."
+ , w->id
+ , buffer_strlen(w->response.header_output)
+ , bytes);
+ else {
+ global_statistics_lock();
+ global_statistics.bytes_sent += bytes;
+ global_statistics_unlock();
+ }
+
+ // enable TCP_NODELAY, to send all data immediately at the next send()
+ flag = 1;
+ if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0) error("%llu: failed to enable TCP_NODELAY on socket.", w->id);
+
+ // enable sending immediately if we have data
+ if(w->response.data->len) w->wait_send = 1;
+ else w->wait_send = 0;
+
+ // pretty logging
+ switch(w->mode) {
+ case WEB_CLIENT_MODE_OPTIONS:
+ debug(D_WEB_CLIENT, "%llu: Done preparing the OPTIONS response. Sending data (%d bytes) to client.", w->id, w->response.data->len);
+ break;
+
+ case WEB_CLIENT_MODE_NORMAL:
+ debug(D_WEB_CLIENT, "%llu: Done preparing the response. Sending data (%d bytes) to client.", w->id, w->response.data->len);
+ break;
+
+ case WEB_CLIENT_MODE_FILECOPY:
+ if(w->response.rlen) {
+ debug(D_WEB_CLIENT, "%llu: Done preparing the response. Will be sending data file of %d bytes to client.", w->id, w->response.rlen);
+ w->wait_receive = 1;
+
+ /*
+ // utilize the kernel sendfile() for copying the file to the socket.
+ // this block of code can be commented, without anything missing.
+ // when it is commented, the program will copy the data using async I/O.
+ {
+ long len = sendfile(w->ofd, w->ifd, NULL, w->response.data->rbytes);
+ if(len != w->response.data->rbytes) error("%llu: sendfile() should copy %ld bytes, but copied %ld. Falling back to manual copy.", w->id, w->response.data->rbytes, len);
+ else web_client_reset(w);
+ }
+ */
+ }
+ else
+ debug(D_WEB_CLIENT, "%llu: Done preparing the response. Will be sending an unknown amount of bytes to client.", w->id);
+ break;
+
+ default:
+ fatal("%llu: Unknown client mode %d.", w->id, w->mode);
+ break;
+ }
+}
+
+long web_client_send_chunk_header(struct web_client *w, long len)
+{
+ debug(D_DEFLATE, "%llu: OPEN CHUNK of %d bytes (hex: %x).", w->id, len, len);
+ char buf[1024];
+ sprintf(buf, "%lX\r\n", len);
+ ssize_t bytes = send(w->ofd, buf, strlen(buf), MSG_DONTWAIT);
+
+ if(bytes > 0) debug(D_DEFLATE, "%llu: Sent chunk header %d bytes.", w->id, bytes);
+ else if(bytes == 0) debug(D_DEFLATE, "%llu: Did not send chunk header to the client.", w->id);
+ else debug(D_DEFLATE, "%llu: Failed to send chunk header to client.", w->id);
+
+ return bytes;
+}
+
+long web_client_send_chunk_close(struct web_client *w)
+{
+ //debug(D_DEFLATE, "%llu: CLOSE CHUNK.", w->id);
+
+ ssize_t bytes = send(w->ofd, "\r\n", 2, MSG_DONTWAIT);
+
+ if(bytes > 0) debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
+ else if(bytes == 0) debug(D_DEFLATE, "%llu: Did not send chunk suffix to the client.", w->id);
+ else debug(D_DEFLATE, "%llu: Failed to send chunk suffix to client.", w->id);
+
+ return bytes;
+}
+
+long web_client_send_chunk_finalize(struct web_client *w)
+{
+ //debug(D_DEFLATE, "%llu: FINALIZE CHUNK.", w->id);
+
+ ssize_t bytes = send(w->ofd, "\r\n0\r\n\r\n", 7, MSG_DONTWAIT);
+
+ if(bytes > 0) debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
+ else if(bytes == 0) debug(D_DEFLATE, "%llu: Did not send chunk suffix to the client.", w->id);
+ else debug(D_DEFLATE, "%llu: Failed to send chunk suffix to client.", w->id);
+
+ return bytes;
+}
+
+#ifdef NETDATA_WITH_ZLIB
+long web_client_send_deflate(struct web_client *w)
+{
+ long len = 0, t = 0;
+
+ // when using compression,
+ // w->response.sent is the amount of bytes passed through compression
+
+ debug(D_DEFLATE, "%llu: web_client_send_deflate(): w->response.data->len = %d, w->response.sent = %d, w->response.zhave = %d, w->response.zsent = %d, w->response.zstream.avail_in = %d, w->response.zstream.avail_out = %d, w->response.zstream.total_in = %d, w->response.zstream.total_out = %d.", 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);
+
+ 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) {
+ // there is nothing to send
+
+ debug(D_WEB_CLIENT, "%llu: Out of output data.", w->id);
+
+ // finalize the chunk
+ if(w->response.sent != 0)
+ t += web_client_send_chunk_finalize(w);
+
+ // there can be two cases for this
+ // A. we have done everything
+ // B. we temporarily have nothing to send, waiting for the buffer to be filled by ifd
+
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->ifd != w->ofd && w->response.rlen && w->response.rlen > w->response.data->len) {
+ // we have to wait, more data will come
+ debug(D_WEB_CLIENT, "%llu: Waiting for more data to become available.", w->id);
+ w->wait_send = 0;
+ return(0);
+ }
+
+ if(w->keepalive == 0) {
+ debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %ld bytes sent.", w->id, w->response.sent);
+ errno = 0;
+ return(-1);
+ }
+
+ // reset the client
+ web_client_reset(w);
+ debug(D_WEB_CLIENT, "%llu: Done sending all data on socket. Waiting for next request on the same socket.", w->id);
+ return(0);
+ }
+
+ if(w->response.zhave == w->response.zsent) {
+ // compress more input data
+
+ // close the previous open chunk
+ if(w->response.sent != 0) t += web_client_send_chunk_close(w);
+
+ debug(D_DEFLATE, "%llu: Compressing %d new bytes starting from %d (and %d left behind).", w->id, (w->response.data->len - w->response.sent), w->response.sent, w->response.zstream.avail_in);
+
+ // give the compressor all the data not passed through the compressor yet
+ if(w->response.data->len > w->response.sent) {
+#ifdef NETDATA_INTERNAL_CHECKS
+ if((long)w->response.sent - (long)w->response.zstream.avail_in < 0)
+ error("internal error: avail_in is corrupted.");
+#endif
+ w->response.zstream.next_in = (Bytef *)&w->response.data->buffer[w->response.sent - w->response.zstream.avail_in];
+ w->response.zstream.avail_in += (uInt) (w->response.data->len - w->response.sent);
+ }
+
+ // reset the compressor output buffer
+ w->response.zstream.next_out = w->response.zbuffer;
+ w->response.zstream.avail_out = ZLIB_CHUNK;
+
+ // ask for FINISH if we have all the input
+ int flush = Z_SYNC_FLUSH;
+ if(w->mode == WEB_CLIENT_MODE_NORMAL
+ || (w->mode == WEB_CLIENT_MODE_FILECOPY && !w->wait_receive && w->response.data->len == w->response.rlen)) {
+ flush = Z_FINISH;
+ debug(D_DEFLATE, "%llu: Requesting Z_FINISH, if possible.", w->id);
+ }
+ else {
+ debug(D_DEFLATE, "%llu: Requesting Z_SYNC_FLUSH.", w->id);
+ }
+
+ // compress
+ if(deflate(&w->response.zstream, flush) == Z_STREAM_ERROR) {
+ error("%llu: Compression failed. Closing down client.", w->id);
+ web_client_reset(w);
+ return(-1);
+ }
+
+ w->response.zhave = ZLIB_CHUNK - w->response.zstream.avail_out;
+ w->response.zsent = 0;
+
+ // keep track of the bytes passed through the compressor
+ w->response.sent = w->response.data->len;
+
+ debug(D_DEFLATE, "%llu: Compression produced %d bytes.", w->id, w->response.zhave);
+
+ // open a new chunk
+ t += web_client_send_chunk_header(w, w->response.zhave);
+ }
+
+ debug(D_WEB_CLIENT, "%llu: Sending %d bytes of data (+%d of chunk header).", w->id, w->response.zhave - w->response.zsent, t);
+
+ len = send(w->ofd, &w->response.zbuffer[w->response.zsent], (size_t) (w->response.zhave - w->response.zsent), MSG_DONTWAIT);
+ if(len > 0) {
+ w->response.zsent += len;
+ if(t > 0) len += t;
+ debug(D_WEB_CLIENT, "%llu: Sent %d bytes.", w->id, len);
+ }
+ else if(len == 0) debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client (zhave = %ld, zsent = %ld, need to send = %ld).", w->id, w->response.zhave, w->response.zsent, w->response.zhave - w->response.zsent);
+ else debug(D_WEB_CLIENT, "%llu: Failed to send data to client. Reason: %s", w->id, strerror(errno));
+
+ return(len);
+}
+#endif // NETDATA_WITH_ZLIB
+
+long web_client_send(struct web_client *w)
+{
+#ifdef NETDATA_WITH_ZLIB
+ if(likely(w->response.zoutput)) return web_client_send_deflate(w);
+#endif // NETDATA_WITH_ZLIB
+
+ long bytes;
+
+ if(unlikely(w->response.data->len - w->response.sent == 0)) {
+ // there is nothing to send
+
+ debug(D_WEB_CLIENT, "%llu: Out of output data.", w->id);
+
+ // there can be two cases for this
+ // A. we have done everything
+ // B. we temporarily have nothing to send, waiting for the buffer to be filled by ifd
+
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->ifd != w->ofd && w->response.rlen && w->response.rlen > w->response.data->len) {
+ // we have to wait, more data will come
+ debug(D_WEB_CLIENT, "%llu: Waiting for more data to become available.", w->id);
+ w->wait_send = 0;
+ return(0);
+ }
+
+ if(unlikely(w->keepalive == 0)) {
+ debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %ld bytes sent.", w->id, w->response.sent);
+ errno = 0;
+ return(-1);
+ }
+
+ web_client_reset(w);
+ debug(D_WEB_CLIENT, "%llu: Done sending all data on socket. Waiting for next request on the same socket.", w->id);
+ return(0);
+ }
+
+ bytes = send(w->ofd, &w->response.data->buffer[w->response.sent], w->response.data->len - w->response.sent, MSG_DONTWAIT);
+ if(likely(bytes > 0)) {
+ w->response.sent += bytes;
+ debug(D_WEB_CLIENT, "%llu: Sent %d bytes.", w->id, bytes);
+ }
+ else if(likely(bytes == 0)) debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client.", w->id);
+ else debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
+
+ return(bytes);
+}
+
+long web_client_receive(struct web_client *w)
+{
+ // do we have any space for more data?
+ buffer_need_bytes(w->response.data, WEB_REQUEST_LENGTH);
+
+ long left = w->response.data->size - w->response.data->len;
+ long bytes;
+
+ if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY))
+ bytes = read(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1));
+ else
+ bytes = recv(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1), MSG_DONTWAIT);
+
+ if(likely(bytes > 0)) {
+ size_t old = w->response.data->len;
+ w->response.data->len += bytes;
+ w->response.data->buffer[w->response.data->len] = '\0';
+
+ debug(D_WEB_CLIENT, "%llu: Received %d bytes.", w->id, bytes);
+ debug(D_WEB_DATA, "%llu: Received data: '%s'.", w->id, &w->response.data->buffer[old]);
+
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY) {
+ w->wait_send = 1;
+ if(w->response.rlen && w->response.data->len >= w->response.rlen) w->wait_receive = 0;
+ }
+ }
+ else if(likely(bytes == 0)) {
+ debug(D_WEB_CLIENT, "%llu: Out of input data.", w->id);
+
+ // if we cannot read, it means we have an error on input.
+ // if however, we are copying a file from ifd to ofd, we should not return an error.
+ // in this case, the error should be generated when the file has been sent to the client.
+
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY) {
+ // we are copying data from ifd to ofd
+ // let it finish copying...
+ w->wait_receive = 0;
+ debug(D_WEB_CLIENT, "%llu: Disabling input.", w->id);
+ }
+ else {
+ bytes = -1;
+ errno = 0;
+ }
+ }
+
+ return(bytes);
+}
+
+
+// --------------------------------------------------------------------------------------
+// the thread of a single client
+
+// 1. waits for input and output, using async I/O
+// 2. it processes HTTP requests
+// 3. it generates HTTP responses
+// 4. it copies data from input to output if mode is FILECOPY
+
+void *web_client_main(void *ptr)
+{
+ if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
+ error("Cannot set pthread cancel type to DEFERRED.");
+
+ if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
+ error("Cannot set pthread cancel state to ENABLE.");
+
+ struct timeval tv;
+ struct web_client *w = ptr;
+ int retval;
+ fd_set ifds, ofds, efds;
+ int fdmax = 0;
+
+ log_access("%llu: %s port %s connected on thread task id %d", w->id, w->client_ip, w->client_port, gettid());
+
+ for(;;) {
+ FD_ZERO (&ifds);
+ FD_ZERO (&ofds);
+ FD_ZERO (&efds);
+
+ FD_SET(w->ifd, &efds);
+
+ if(w->ifd != w->ofd)
+ FD_SET(w->ofd, &efds);
+
+ if (w->wait_receive) {
+ FD_SET(w->ifd, &ifds);
+ if(w->ifd > fdmax) fdmax = w->ifd;
+ }
+
+ if (w->wait_send) {
+ FD_SET(w->ofd, &ofds);
+ if(w->ofd > fdmax) fdmax = w->ofd;
+ }
+
+ tv.tv_sec = web_client_timeout;
+ tv.tv_usec = 0;
+
+ debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
+ retval = select(fdmax+1, &ifds, &ofds, &efds, &tv);
+
+ if(retval == -1) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: LISTENER: select() failed.", w->id);
+ continue;
+ }
+ else if(!retval) {
+ // timeout
+ debug(D_WEB_CLIENT_ACCESS, "%llu: LISTENER: timeout.", w->id);
+ break;
+ }
+
+ if(FD_ISSET(w->ifd, &efds)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on input socket.", w->id);
+ break;
+ }
+
+ if(FD_ISSET(w->ofd, &efds)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on output socket.", w->id);
+ break;
+ }
+
+ if(w->wait_send && FD_ISSET(w->ofd, &ofds)) {
+ long bytes;
+ if((bytes = web_client_send(w)) < 0) {
+ debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
+ errno = 0;
+ break;
+ }
+
+ global_statistics_lock();
+ global_statistics.bytes_sent += bytes;
+ global_statistics_unlock();
+ }
+
+ if(w->wait_receive && FD_ISSET(w->ifd, &ifds)) {
+ long bytes;
+ if((bytes = web_client_receive(w)) < 0) {
+ debug(D_WEB_CLIENT, "%llu: Cannot receive data from client. Closing client.", w->id);
+ errno = 0;
+ break;
+ }
+
+ if(w->mode == WEB_CLIENT_MODE_NORMAL) {
+ debug(D_WEB_CLIENT, "%llu: Attempting to process received data (%ld bytes).", w->id, bytes);
+ // info("%llu: Attempting to process received data (%ld bytes).", w->id, bytes);
+ web_client_process(w);
+ }
+
+ global_statistics_lock();
+ global_statistics.bytes_received += bytes;
+ global_statistics_unlock();
+ }
+ }
+
+ log_access("%llu: %s port %s disconnected from thread task id %d", w->id, w->client_ip, w->client_port, gettid());
+ debug(D_WEB_CLIENT, "%llu: done...", w->id);
+
+ web_client_reset(w);
+ w->obsolete = 1;
+
+ return NULL;
+}
projects / netdata.git / blobdiff