-// enable strcasestr()
-#define _GNU_SOURCE
-
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include "common.h"
#include "log.h"
-#include "config.h"
+#include "appconfig.h"
#include "url.h"
#include "web_buffer.h"
#include "web_client.h"
int listen_fd = -1;
int listen_port = LISTEN_PORT;
-#define DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS 60
-
-int web_client_timeout = DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS;
-
static void log_allocations(void)
{
static int mem = 0;
}
-int mysendfile(struct web_client *w, char *filename)
-{
- static char *web_dir = NULL;
- if(!web_dir) web_dir = config_get("global", "web files directory", "web");
-
- debug(D_WEB_CLIENT, "%llu: Looking for file '%s'...", w->id, filename);
-
- // skip leading slashes
- while (*filename == '/') filename++;
-
- // if the filename contain known paths, skip them
- if(strncmp(filename, WEB_PATH_DATA "/", strlen(WEB_PATH_DATA) + 1) == 0) filename = &filename[strlen(WEB_PATH_DATA) + 1];
- else if(strncmp(filename, WEB_PATH_DATASOURCE "/", strlen(WEB_PATH_DATASOURCE) + 1) == 0) filename = &filename[strlen(WEB_PATH_DATASOURCE) + 1];
- else if(strncmp(filename, WEB_PATH_GRAPH "/", strlen(WEB_PATH_GRAPH) + 1) == 0) filename = &filename[strlen(WEB_PATH_GRAPH) + 1];
- else if(strncmp(filename, WEB_PATH_FILE "/", strlen(WEB_PATH_FILE) + 1) == 0) filename = &filename[strlen(WEB_PATH_FILE) + 1];
-
- // if the filename contains a / or a .., refuse to serve it
- if(strchr(filename, '/') != 0 || strstr(filename, "..") != 0) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: File '%s' is not acceptable.", w->id, filename);
- web_buffer_printf(w->data, "File '%s' cannot be served. Filenames cannot contain / or ..", 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) {
- error("%llu: File '%s' is not found.", w->id, webfilename);
- web_buffer_printf(w->data, "File '%s' does not exist, or is not accessible.", filename);
- return 404;
- }
-
- // check if the file is owned by us
- if(stat.st_uid != getuid() && stat.st_uid != geteuid()) {
- error("%llu: File '%s' is owned by user %d (I run as user %d). Access Denied.", w->id, webfilename, stat.st_uid, getuid());
- web_buffer_printf(w->data, "Access to file '%s' is not permitted.", filename);
- 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);
- snprintf(w->response_header, MAX_HTTP_HEADER_SIZE, "Location: /" WEB_PATH_FILE "/%s\r\n", filename);
- web_buffer_printf(w->data, "The file '%s' is currently busy. Please try again later.", filename);
- return 307;
- }
- else {
- error("%llu: Cannot open file '%s'.", w->id, webfilename);
- web_buffer_printf(w->data, "Cannot open file '%s'.", filename);
- return 404;
- }
- }
-
- // pick a Content-Type for the file
- if(strstr(filename, ".html") != NULL) w->data->contenttype = CT_TEXT_HTML;
- else if(strstr(filename, ".js") != NULL) w->data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
- else if(strstr(filename, ".css") != NULL) w->data->contenttype = CT_TEXT_CSS;
- else if(strstr(filename, ".xml") != NULL) w->data->contenttype = CT_TEXT_XML;
- else if(strstr(filename, ".xsl") != NULL) w->data->contenttype = CT_TEXT_XSL;
- else if(strstr(filename, ".txt") != NULL) w->data->contenttype = CT_TEXT_PLAIN;
- else if(strstr(filename, ".svg") != NULL) w->data->contenttype = CT_IMAGE_SVG_XML;
- else if(strstr(filename, ".ttf") != NULL) w->data->contenttype = CT_APPLICATION_X_FONT_TRUETYPE;
- else if(strstr(filename, ".otf") != NULL) w->data->contenttype = CT_APPLICATION_X_FONT_OPENTYPE;
- else if(strstr(filename, ".woff") != NULL) w->data->contenttype = CT_APPLICATION_FONT_WOFF;
- else if(strstr(filename, ".eot") != NULL) w->data->contenttype = CT_APPLICATION_VND_MS_FONTOBJ;
- else w->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;
- w->data->bytes = 0;
- w->data->buffer[0] = '\0';
- w->data->rbytes = stat.st_size;
- w->data->date = stat.st_mtim.tv_sec;
-
- return 200;
-}
-
-void web_client_reset(struct web_client *w)
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
-
- long sent = w->zoutput?(long)w->zstream.total_out:((w->mode == WEB_CLIENT_MODE_FILECOPY)?w->data->rbytes:w->data->bytes);
- long size = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->data->rbytes:w->data->bytes;
-
- if(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: '%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":"data",
- w->last_url
- );
-
- debug(D_WEB_CLIENT, "%llu: Reseting client.", w->id);
-
- if(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->data->contenttype = CT_TEXT_PLAIN;
- w->mode = WEB_CLIENT_MODE_NORMAL;
-
- w->data->rbytes = 0;
- w->data->bytes = 0;
- w->data->sent = 0;
-
- w->response_header[0] = '\0';
- w->data->buffer[0] = '\0';
-
- w->wait_receive = 1;
- w->wait_send = 0;
-
- // if we had enabled compression, release it
- if(w->zinitialized) {
- debug(D_DEFLATE, "%llu: Reseting compression.", w->id);
- deflateEnd(&w->zstream);
- w->zoutput = 0;
- w->zsent = 0;
- w->zhave = 0;
- w->zstream.avail_in = 0;
- w->zstream.avail_out = 0;
- w->zstream.total_in = 0;
- w->zstream.total_out = 0;
- w->zinitialized = 0;
- }
-}
-
-void web_client_enable_deflate(struct web_client *w) {
- if(w->zinitialized == 1) {
- error("%llu: Compression has already be initialized for this client.", w->id);
- return;
- }
-
- if(w->data->sent) {
- error("%llu: Cannot enable compression in the middle of a conversation.", w->id);
- return;
- }
-
- w->zstream.zalloc = Z_NULL;
- w->zstream.zfree = Z_NULL;
- w->zstream.opaque = Z_NULL;
-
- w->zstream.next_in = (Bytef *)w->data->buffer;
- w->zstream.avail_in = 0;
- w->zstream.total_in = 0;
-
- w->zstream.next_out = w->zbuffer;
- w->zstream.avail_out = 0;
- w->zstream.total_out = 0;
-
- w->zstream.zalloc = Z_NULL;
- w->zstream.zfree = Z_NULL;
- w->zstream.opaque = Z_NULL;
-
-// if(deflateInit(&w->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->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->zsent = 0;
- w->zoutput = 1;
- w->zinitialized = 1;
-
- debug(D_DEFLATE, "%llu: Initialized compression.", w->id);
-}
-
-int web_client_data_request(struct web_client *w, char *url, int datasource_type)
-{
- char *args = strchr(url, '?');
- if(args) {
- *args='\0';
- args = &args[1];
- }
-
- // get the name of the data to show
- char *tok = mystrsep(&url, "/");
- 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
- w->data->bytes = 0;
- 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) 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(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) after = strtoul(tok, NULL, 10);
- if(after < 0) after = 0;
- }
- if(url) {
- // parse before time
- tok = mystrsep(&url, "/");
- if(tok) before = strtoul(tok, NULL, 10);
- if(before < 0) before = 0;
- }
- if(url) {
- // parse nonzero
- tok = mystrsep(&url, "/");
- if(tok && strcmp(tok, "nonzero") == 0) nonzero = 1;
- }
-
- w->data->contenttype = CT_APPLICATION_JSON;
- w->data->bytes = 0;
-
- 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;
- unsigned long last_timestamp_in_data = 0;
- if(datasource_type == DATASOURCE_GOOGLE_JSON || datasource_type == DATASOURCE_GOOGLE_JSONP) {
-
- w->data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
-
- while(args) {
- tok = mystrsep(&args, "&");
- if(tok) {
- char *name = mystrsep(&tok, "=");
- if(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_GOOGLE_JSONP) {
- last_timestamp_in_data = strtoul(google_sig, NULL, 0);
-
- // check the client wants json
- if(strcmp(google_out, "json") != 0) {
- w->data->bytes = snprintf(w->data->buffer, w->data->size,
- "%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_GOOGLE_JSONP) {
- w->data->bytes = snprintf(w->data->buffer, w->data->size,
- "%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);
- unsigned long timestamp_in_data = rrd_stats_json(datasource_type, st, w->data, lines, group_count, group_method, after, before, nonzero);
-
- if(datasource_type == DATASOURCE_GOOGLE_JSONP) {
- if(timestamp_in_data > last_timestamp_in_data)
- w->data->bytes += snprintf(&w->data->buffer[w->data->bytes], w->data->size - w->data->bytes, "});");
-
- else {
- // the client already has the latest data
- w->data->bytes = snprintf(w->data->buffer, w->data->size,
- "%s({version:'%s',reqId:'%s',status:'error',errors:[{reason:'not_modified',message:'Data not modified'}]});",
- google_responseHandler, google_version, google_reqId);
- }
- }
-
- return 200;
-}
-
-void web_client_process(struct web_client *w)
-{
- int code = 500;
- int bytes;
-
- w->wait_receive = 0;
-
- // check if we have an empty line (end of HTTP header)
- if(strstr(w->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->data->bytes, w->data->buffer);
-
- // check if the client requested keep-alive HTTP
- if(strcasestr(w->data->buffer, "Connection: keep-alive")) w->keepalive = 1;
- else w->keepalive = 0;
-
- // check if the client accepts deflate
- if(strstr(w->data->buffer, "gzip"))
- web_client_enable_deflate(w);
-
- int datasource_type = DATASOURCE_GOOGLE_JSONP;
- //if(strstr(w->data->buffer, "X-DataSource-Auth"))
- // datasource_type = DATASOURCE_GOOGLE_JSON;
-
- char *buf = w->data->buffer;
- char *tok = strsep(&buf, " \r\n");
- char *url = NULL;
- char *pointer_to_free = NULL; // keep url_decode() allocated buffer
-
- if(buf && strcmp(tok, "GET") == 0) {
- tok = strsep(&buf, " \r\n");
- pointer_to_free = url = url_decode(tok);
- debug(D_WEB_CLIENT, "%llu: Processing HTTP GET on url '%s'.", w->id, url);
- }
- else if (buf && strcmp(tok, "POST") == 0) {
- w->keepalive = 0;
- tok = strsep(&buf, " \r\n");
- pointer_to_free = url = url_decode(tok);
-
- debug(D_WEB_CLIENT, "%llu: I don't know how to handle POST with form data. Assuming it is a GET on url '%s'.", w->id, url);
- }
-
- w->last_url[0] = '\0';
- if(url) {
- strncpy(w->last_url, url, URL_MAX);
- w->last_url[URL_MAX] = '\0';
-
- tok = mystrsep(&url, "/?&");
-
- debug(D_WEB_CLIENT, "%llu: Processing command '%s'.", w->id, tok);
-
- if(strcmp(tok, WEB_PATH_DATA) == 0) { // "data"
- // the client is requesting rrd data
- datasource_type = DATASOURCE_JSON;
- code = web_client_data_request(w, url, datasource_type);
- }
- else if(strcmp(tok, WEB_PATH_DATASOURCE) == 0) { // "datasource"
- // the client is requesting google datasource
- code = web_client_data_request(w, url, datasource_type);
- }
- 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, "/?&");
- 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
- w->data->bytes = 0;
- code = mysendfile(w, tok);
- }
- else {
- code = 200;
- debug(D_WEB_CLIENT_ACCESS, "%llu: Sending %s.json of RRD_STATS...", w->id, st->name);
- w->data->contenttype = CT_APPLICATION_JSON;
- w->data->bytes = 0;
- rrd_stats_graph_json(st, url, w->data);
- }
- }
- else if(strcmp(tok, "debug") == 0) {
- w->data->bytes = 0;
-
- // get the name of the data to show
- tok = mystrsep(&url, "/?&");
- 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;
- web_buffer_printf(w->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;
- web_buffer_printf(w->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 if(strcmp(tok, "mirror") == 0) {
- code = 200;
-
- debug(D_WEB_CLIENT_ACCESS, "%llu: Mirroring...", w->id);
-
- // replace the zero bytes with spaces
- int i;
- for(i = 0; i < w->data->size; i++)
- if(w->data->buffer[i] == '\0') w->data->buffer[i] = ' ';
-
- // just leave the buffer as is
- // it will be copied back to the client
- }
- else if(strcmp(tok, "list") == 0) {
- code = 200;
-
- debug(D_WEB_CLIENT_ACCESS, "%llu: Sending list of RRD_STATS...", w->id);
-
- w->data->bytes = 0;
- RRDSET *st = rrdset_root;
-
- for ( ; st ; st = st->next )
- web_buffer_printf(w->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->data->contenttype = CT_APPLICATION_JSON;
- w->data->bytes = 0;
- rrd_stats_all_json(w->data);
- }
- else if(strcmp(tok, "netdata.conf") == 0) {
- code = 200;
- debug(D_WEB_CLIENT_ACCESS, "%llu: Sending netdata.conf ...", w->id);
-
- w->data->contenttype = CT_TEXT_PLAIN;
- w->data->bytes = 0;
- generate_config(w->data, 0);
- }
- else if(strcmp(tok, WEB_PATH_FILE) == 0) { // "file"
- tok = mystrsep(&url, "/?&");
- if(tok && *tok) code = mysendfile(w, tok);
- else {
- code = 400;
- w->data->bytes = 0;
- strcpy(w->data->buffer, "You have to give a filename to get.\r\n");
- w->data->bytes = strlen(w->data->buffer);
- }
- }
- else if(!tok[0]) {
- w->data->bytes = 0;
- code = mysendfile(w, "index.html");
- }
- else {
- w->data->bytes = 0;
- code = mysendfile(w, tok);
- }
-
- }
- else {
- strcpy(w->last_url, "not a valid response");
-
- if(buf) debug(D_WEB_CLIENT_ACCESS, "%llu: Cannot understand '%s'.", w->id, buf);
-
- code = 500;
- w->data->bytes = 0;
- strcpy(w->data->buffer, "I don't understand you...\r\n");
- w->data->bytes = strlen(w->data->buffer);
- }
-
- // free url_decode() buffer
- if(pointer_to_free) free(pointer_to_free);
- }
- else if(w->data->bytes > 8192) {
- strcpy(w->last_url, "too big request");
-
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received request is too big.", w->id);
-
- code = 400;
- w->data->bytes = 0;
- strcpy(w->data->buffer, "Received request is too big.\r\n");
- w->data->bytes = strlen(w->data->buffer);
- }
- else {
- // wait for more data
- w->wait_receive = 1;
- return;
- }
-
- if(w->data->bytes > w->data->size) {
- error("%llu: memory overflow encountered (size is %ld, written %ld).", w->data->size, w->data->bytes);
- }
-
- gettimeofday(&w->tv_ready, NULL);
- w->data->date = time(NULL);
- w->data->sent = 0;
-
- // 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->data->contenttype) {
- case CT_TEXT_HTML:
- content_type_string = "text/html";
- break;
-
- case CT_APPLICATION_XML:
- content_type_string = "application/xml";
- break;
-
- case CT_APPLICATION_JSON:
- content_type_string = "application/json";
- break;
-
- case CT_APPLICATION_X_JAVASCRIPT:
- content_type_string = "application/x-javascript";
- break;
-
- case CT_TEXT_CSS:
- content_type_string = "text/css";
- break;
-
- case CT_TEXT_XML:
- content_type_string = "text/xml";
- break;
-
- case CT_TEXT_XSL:
- content_type_string = "text/xsl";
- 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_VND_MS_FONTOBJ:
- content_type_string = "application/vnd.ms-fontobject";
- break;
-
- default:
- case CT_TEXT_PLAIN:
- content_type_string = "text/plain";
- 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 tm = *gmtime(&w->data->date);
- strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S %Z", &tm);
-
- char custom_header[MAX_HTTP_HEADER_SIZE + 1] = "";
- if(w->response_header[0])
- strcpy(custom_header, w->response_header);
-
- int headerlen = 0;
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
- "HTTP/1.1 %d %s\r\n"
- "Connection: %s\r\n"
- "Server: NetData Embedded HTTP Server\r\n"
- "Content-Type: %s\r\n"
- "Access-Control-Allow-Origin: *\r\n"
- "Date: %s\r\n"
- , code, code_msg
- , w->keepalive?"keep-alive":"close"
- , content_type_string
- , date
- );
-
- if(custom_header[0])
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen, "%s", custom_header);
-
- if(w->mode == WEB_CLIENT_MODE_NORMAL) {
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
- "Expires: %s\r\n"
- "Cache-Control: no-cache\r\n"
- , date
- );
- }
- else {
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
- "Cache-Control: public\r\n"
- );
- }
-
- // if we know the content length, put it
- if(!w->zoutput && (w->data->bytes || w->data->rbytes))
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
- "Content-Length: %ld\r\n"
- , w->data->bytes?w->data->bytes:w->data->rbytes
- );
- else if(!w->zoutput)
- w->keepalive = 0; // content-length is required for keep-alive
-
- if(w->zoutput) {
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
- "Content-Encoding: gzip\r\n"
- "Transfer-Encoding: chunked\r\n"
- );
- }
-
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen, "\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, headerlen, w->response_header);
-
- bytes = send(w->ofd, w->response_header, headerlen, 0);
- if(bytes != headerlen)
- error("%llu: HTTP Header failed to be sent (I sent %d bytes but the system sent %d bytes).", w->id, headerlen, 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->data->bytes) w->wait_send = 1;
- else w->wait_send = 0;
-
- // pretty logging
- switch(w->mode) {
- case WEB_CLIENT_MODE_NORMAL:
- debug(D_WEB_CLIENT, "%llu: Done preparing the response. Sending data (%d bytes) to client.", w->id, w->data->bytes);
- break;
-
- case WEB_CLIENT_MODE_FILECOPY:
- if(w->data->rbytes) {
- debug(D_WEB_CLIENT, "%llu: Done preparing the response. Will be sending data file of %d bytes to client.", w->id, w->data->rbytes);
- 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->data->rbytes);
- if(len != w->data->rbytes) error("%llu: sendfile() should copy %ld bytes, but copied %ld. Falling back to manual copy.", w->id, w->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, int len)
-{
- debug(D_DEFLATE, "%llu: OPEN CHUNK of %d bytes (hex: %x).", w->id, len, len);
- char buf[1024];
- sprintf(buf, "%X\r\n", len);
- int 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. Reason: %s", w->id, strerror(errno));
-
- return bytes;
-}
-
-long web_client_send_chunk_close(struct web_client *w)
-{
- //debug(D_DEFLATE, "%llu: CLOSE CHUNK.", w->id);
-
- int 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. Reason: %s", w->id, strerror(errno));
-
- return bytes;
-}
-
-long web_client_send_chunk_finalize(struct web_client *w)
-{
- //debug(D_DEFLATE, "%llu: FINALIZE CHUNK.", w->id);
-
- int 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. Reason: %s", w->id, strerror(errno));
-
- return bytes;
-}
-
-long web_client_send_deflate(struct web_client *w)
-{
- long bytes = 0, t = 0;
-
- // when using compression,
- // w->data->sent is the amount of bytes passed through compression
-
- // debug(D_DEFLATE, "%llu: TEST w->data->bytes = %d, w->data->sent = %d, w->zhave = %d, w->zsent = %d, w->zstream.avail_in = %d, w->zstream.avail_out = %d, w->zstream.total_in = %d, w->zstream.total_out = %d.", w->id, w->data->bytes, w->data->sent, w->zhave, w->zsent, w->zstream.avail_in, w->zstream.avail_out, w->zstream.total_in, w->zstream.total_out);
-
- if(w->data->bytes - w->data->sent == 0 && w->zstream.avail_in == 0 && w->zhave == w->zsent && w->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->data->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->data->rbytes && w->data->rbytes > w->data->bytes) {
- // 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->data->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->zstream.avail_out == 0 && w->zhave == w->zsent) {
- // compress more input data
-
- // close the previous open chunk
- if(w->data->sent != 0) t += web_client_send_chunk_close(w);
-
- debug(D_DEFLATE, "%llu: Compressing %d bytes starting from %d.", w->id, (w->data->bytes - w->data->sent), w->data->sent);
-
- // give the compressor all the data not passed through the compressor yet
- if(w->data->bytes > w->data->sent) {
- w->zstream.next_in = (Bytef *)&w->data->buffer[w->data->sent];
- w->zstream.avail_in = (w->data->bytes - w->data->sent);
- }
-
- // reset the compressor output buffer
- w->zstream.next_out = w->zbuffer;
- w->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->data->bytes == w->data->rbytes)) {
- flush = Z_FINISH;
- debug(D_DEFLATE, "%llu: Requesting Z_FINISH.", w->id);
- }
- else {
- debug(D_DEFLATE, "%llu: Requesting Z_SYNC_FLUSH.", w->id);
- }
-
- // compress
- if(deflate(&w->zstream, flush) == Z_STREAM_ERROR) {
- error("%llu: Compression failed. Closing down client.", w->id);
- web_client_reset(w);
- return(-1);
- }
-
- w->zhave = ZLIB_CHUNK - w->zstream.avail_out;
- w->zsent = 0;
-
- // keep track of the bytes passed through the compressor
- w->data->sent = w->data->bytes;
-
- debug(D_DEFLATE, "%llu: Compression produced %d bytes.", w->id, w->zhave);
-
- // open a new chunk
- t += web_client_send_chunk_header(w, w->zhave);
- }
-
- bytes = send(w->ofd, &w->zbuffer[w->zsent], w->zhave - w->zsent, MSG_DONTWAIT);
- if(bytes > 0) {
- w->zsent += bytes;
- if(t > 0) bytes += t;
- debug(D_WEB_CLIENT, "%llu: Sent %d bytes.", w->id, bytes);
- }
- else if(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. Reason: %s", w->id, strerror(errno));
-
- return(bytes);
-}
-
-long web_client_send(struct web_client *w)
-{
- if(w->zoutput) return web_client_send_deflate(w);
-
- long bytes;
-
- if(w->data->bytes - w->data->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->data->rbytes && w->data->rbytes > w->data->bytes) {
- // 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->data->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->data->buffer[w->data->sent], w->data->bytes - w->data->sent, MSG_DONTWAIT);
- if(bytes > 0) {
- w->data->sent += bytes;
- debug(D_WEB_CLIENT, "%llu: Sent %d bytes.", w->id, bytes);
- }
- else if(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. Reason: %s", w->id, strerror(errno));
-
-
- return(bytes);
-}
-
-long web_client_receive(struct web_client *w)
-{
- // do we have any space for more data?
- web_buffer_increase(w->data, WEB_DATA_LENGTH_INCREASE_STEP);
-
- long left = w->data->size - w->data->bytes;
- long bytes;
-
- if(w->mode == WEB_CLIENT_MODE_FILECOPY)
- bytes = read(w->ifd, &w->data->buffer[w->data->bytes], (left-1));
- else
- bytes = recv(w->ifd, &w->data->buffer[w->data->bytes], left-1, MSG_DONTWAIT);
-
- if(bytes > 0) {
- int old = w->data->bytes;
- w->data->bytes += bytes;
- w->data->buffer[w->data->bytes] = '\0';
-
- debug(D_WEB_CLIENT, "%llu: Received %d bytes.", w->id, bytes);
- debug(D_WEB_DATA, "%llu: Received data: '%s'.", w->id, &w->data->buffer[old]);
-
- if(w->mode == WEB_CLIENT_MODE_FILECOPY) {
- w->wait_send = 1;
- if(w->data->rbytes && w->data->bytes >= w->data->rbytes) w->wait_receive = 0;
- }
- }
- else if(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 fron 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 *new_client(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;
-
- 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
- web_client_reset(w);
- w->obsolete = 1;
- return NULL;
- }
-
- if(FD_ISSET(w->ifd, &efds)) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on input socket (%s).", w->id, strerror(errno));
- web_client_reset(w);
- w->obsolete = 1;
- return NULL;
- }
-
- if(FD_ISSET(w->ofd, &efds)) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on output socket (%s).", w->id, strerror(errno));
- web_client_reset(w);
- w->obsolete = 1;
- return NULL;
- }
-
- if(w->wait_send && FD_ISSET(w->ofd, &ofds)) {
- long bytes;
- if((bytes = web_client_send(w)) < 0) {
- debug(D_WEB_CLIENT, "%llu: Closing client (input: %s).", w->id, strerror(errno));
- web_client_reset(w);
- w->obsolete = 1;
- errno = 0;
- return NULL;
- }
- else {
- 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: Closing client (output: %s).", w->id, strerror(errno));
- web_client_reset(w);
- w->obsolete = 1;
- errno = 0;
- return NULL;
- }
- else {
- if(w->mode != WEB_CLIENT_MODE_FILECOPY) {
- global_statistics_lock();
- global_statistics.bytes_received += bytes;
- global_statistics_unlock();
- }
- }
-
- if(w->mode == WEB_CLIENT_MODE_NORMAL) web_client_process(w);
- }
- }
- debug(D_WEB_CLIENT, "%llu: done...", w->id);
-
- return NULL;
-}
-
// --------------------------------------------------------------------------------------
// the main socket listener
void *socket_listen_main(void *ptr)
{
if(ptr) { ; }
+
+ info("WEB SERVER thread created with task id %d", gettid());
+
struct web_client *w;
struct timeval tv;
int retval;
error("Cannot set pthread cancel state to ENABLE.");
web_client_timeout = config_get_number("global", "disconnect idle web clients after seconds", DEFAULT_DISCONNECT_IDLE_WEB_CLIENTS_AFTER_SECONDS);
+ web_enable_gzip = config_get_boolean("global", "enable web responses gzip compression", web_enable_gzip);
if(listen_fd < 0) fatal("LISTENER: Listen socket is not ready.");
// check for new incoming connections
if(FD_ISSET(listen_fd, &ifds)) {
w = web_client_create(listen_fd);
+ if(unlikely(!w)) {
+ // no need for error log - web_client_create already logged the error
+ continue;
+ }
- if(pthread_create(&w->thread, NULL, new_client, w) != 0) {
+ if(pthread_create(&w->thread, NULL, web_client_main, w) != 0) {
error("%llu: failed to create new thread for web client.");
w->obsolete = 1;
}
error("%llu: Cannot request detach of newly created web client thread.", w->id);
w->obsolete = 1;
}
-
- log_access("%llu: %s port %s connected", w->id, w->client_ip, w->client_port);
}
else debug(D_WEB_CLIENT, "LISTENER: select() didn't do anything.");
// cleanup unused clients
for(w = web_clients; w ; w = w?w->next:NULL) {
if(w->obsolete) {
- log_access("%llu: %s port %s disconnected", w->id, w->client_ip, w->client_port);
debug(D_WEB_CLIENT, "%llu: Removing client.", w->id);
// pthread_join(w->thread, NULL);
w = web_client_free(w);
projects / netdata.git / blobdiff