-// 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 <fcntl.h>
#include <netinet/tcp.h>
#include <malloc.h>
+#include <pwd.h>
+#include <grp.h>
+#include <ctype.h>
+#include <poll.h>
#include "common.h"
#include "log.h"
-#include "config.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"
-#define INITIAL_WEB_DATA_LENGTH 65536
+#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;
+
+#ifdef NETDATA_WITH_ZLIB
+int web_enable_gzip = 1, web_gzip_level = 3, web_gzip_strategy = Z_DEFAULT_STRATEGY;
+#endif /* NETDATA_WITH_ZLIB */
+
+extern int netdata_exit;
struct web_client *web_clients = NULL;
unsigned long long web_clients_count = 0;
+inline int web_client_crock_socket(struct web_client *w) {
+#ifdef TCP_CORK
+ if(likely(!w->tcp_cork && w->ofd != -1)) {
+ w->tcp_cork = 1;
+ if(unlikely(setsockopt(w->ofd, IPPROTO_TCP, TCP_CORK, (char *) &w->tcp_cork, sizeof(int)) != 0)) {
+ error("%llu: failed to enable TCP_CORK on socket.", w->id);
+ w->tcp_cork = 0;
+ return -1;
+ }
+ }
+#endif /* TCP_CORK */
+
+ return 0;
+}
+
+inline int web_client_uncrock_socket(struct web_client *w) {
+#ifdef TCP_CORK
+ if(likely(w->tcp_cork && w->ofd != -1)) {
+ w->tcp_cork = 0;
+ if(unlikely(setsockopt(w->ofd, IPPROTO_TCP, TCP_CORK, (char *) &w->tcp_cork, sizeof(int)) != 0)) {
+ error("%llu: failed to disable TCP_CORK on socket.", w->id);
+ w->tcp_cork = 1;
+ return -1;
+ }
+ }
+#endif /* TCP_CORK */
+
+ return 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.");
if(getnameinfo(sadr, addrlen, w->client_ip, NI_MAXHOST, w->client_port, NI_MAXSERV, NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
error("Cannot getnameinfo() on received client connection.");
- strncpy(w->client_ip, "UNKNOWN", NI_MAXHOST);
- strncpy(w->client_port, "UNKNOWN", NI_MAXSERV);
+ strncpyz(w->client_ip, "UNKNOWN", NI_MAXHOST);
+ strncpyz(w->client_port, "UNKNOWN", NI_MAXSERV);
}
w->client_ip[NI_MAXHOST] = '\0';
w->client_port[NI_MAXSERV] = '\0';
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 IPv4 web client from %s port %s on socket %d.", w->id, w->client_ip, w->client_port, w->ifd);
}
- 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);
+ else
+ 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;
}
int flag = 1;
- if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0) error("%llu: Cannot set SO_KEEPALIVE on socket.", w->id);
+ if(setsockopt(w->ofd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0)
+ error("%llu: failed to enable TCP_NODELAY on socket.", w->id);
+
+ flag = 1;
+ if(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0)
+ error("%llu: Cannot set SO_KEEPALIVE on socket.", w->id);
+
+
+ }
+
+ 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->data = web_buffer_create(INITIAL_WEB_DATA_LENGTH);
- if(!w->data) {
+ 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;
}
+ w->origin[0] = '*';
w->wait_receive = 1;
if(web_clients) web_clients->prev = w;
return(w);
}
-struct web_client *web_client_free(struct web_client *w)
-{
+void web_client_reset(struct web_client *w) {
+ web_client_uncrock_socket(w);
+
+ debug(D_WEB_CLIENT, "%llu: Reseting client.", w->id);
+
+ if(likely(w->last_url[0])) {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+
+ size_t size = (w->mode == WEB_CLIENT_MODE_FILECOPY)?w->response.rlen:w->response.data->len;
+ size_t sent = size;
+#ifdef NETDATA_WITH_ZLIB
+ if(likely(w->response.zoutput)) sent = (size_t)w->response.zstream.total_out;
+#endif
+
+ // --------------------------------------------------------------------
+ // global statistics
+
+ if(web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
+ global_statistics_lock();
+
+ global_statistics.web_requests++;
+ global_statistics.web_usec += usecdiff(&tv, &w->tv_in);
+ global_statistics.bytes_received += w->stats_received_bytes;
+ global_statistics.bytes_sent += w->stats_sent_bytes;
+ global_statistics.content_size += size;
+ global_statistics.compressed_content_size += sent;
+
+ if(web_server_mode == WEB_SERVER_MODE_MULTI_THREADED)
+ global_statistics_unlock();
+
+ w->stats_received_bytes = 0;
+ w->stats_sent_bytes = 0;
+
+
+ // --------------------------------------------------------------------
+ // access log
+
+ log_access("%llu: (sent/all = %zu/%zu 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
+ );
+ }
+
+ if(unlikely(w->mode == WEB_CLIENT_MODE_FILECOPY)) {
+ if(w->ifd != w->ofd) {
+ debug(D_WEB_CLIENT, "%llu: Closing filecopy input file descriptor %d.", w->id, w->ifd);
+ if(w->ifd != -1) close(w->ifd);
+ w->ifd = w->ofd;
+ }
+ }
+
+ w->last_url[0] = '\0';
+ w->cookie1[0] = '\0';
+ w->cookie2[0] = '\0';
+ w->origin[0] = '*';
+ w->origin[1] = '\0';
+
+ w->mode = WEB_CLIENT_MODE_NORMAL;
+
+ w->keepalive = 0;
+ w->decoded_url[0] = '\0';
+
+ 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: Freeing compression resources.", 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) {
+ web_client_reset(w);
+
struct web_client *n = w->next;
+ if(w == web_clients) web_clients = n;
debug(D_WEB_CLIENT_ACCESS, "%llu: Closing web client from %s port %s.", w->id, w->client_ip, w->client_port);
if(w->prev) w->prev->next = w->next;
if(w->next) w->next->prev = w->prev;
-
- if(w == web_clients) web_clients = w->next;
-
- if(w->data) web_buffer_free(w->data);
- close(w->ifd);
- if(w->ofd != w->ifd) close(w->ofd);
+ 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);
+ if(w->ifd != -1) close(w->ifd);
+ if(w->ofd != -1 && w->ofd != w->ifd) close(w->ofd);
free(w);
global_statistics.connected_clients--;
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.", 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.", web_group);
+ owner_gid = gr->gr_gid;
+ }
+ }
+ }
+
+ return(owner_gid);
+}
+
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);
+ // 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_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(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 / or a .., refuse to serve it
- if(strchr(filename, '/') != 0 || strstr(filename, "..") != 0) {
+ // 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);
- web_buffer_printf(w->data, "File '%s' cannot be served. Filenames cannot contain / or ..", 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);
+ snprintfz(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);
+ 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 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);
+ // 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) {
+ snprintfz(webfilename, FILENAME_MAX, "%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;
}
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);
+ 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);
- web_buffer_printf(w->data, "Cannot open file '%s'.", filename);
+ 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->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;
+ 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;
- w->data->bytes = 0;
- w->data->buffer[0] = '\0';
- w->data->rbytes = stat.st_size;
- w->data->date = stat.st_mtim.tv_sec;
+ buffer_flush(w->response.data);
+ w->response.rlen = stat.st_size;
+ w->response.data->date = stat.st_mtim.tv_sec;
return 200;
}
-void web_client_reset(struct web_client *w)
+
+#ifdef NETDATA_WITH_ZLIB
+void web_client_enable_deflate(struct web_client *w, int gzip) {
+ if(unlikely(w->response.zinitialized)) {
+ error("%llu: Compression has already be initialized for this client.", w->id);
+ return;
+ }
+
+ if(unlikely(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, web_gzip_level, Z_DEFLATED, 15 + ((gzip)?16:0), 8, web_gzip_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)
{
- 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
- );
+ 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;
+ }
- debug(D_WEB_CLIENT, "%llu: Reseting client.", w->id);
+ return ret;
+}
- 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;
+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;
+ //}
}
- w->last_url[0] = '\0';
+ if(!chart || !*chart) {
+ buffer_sprintf(w->response.data, "No chart id is given at the request.");
+ goto cleanup;
+ }
- w->data->contenttype = CT_TEXT_PLAIN;
- w->mode = WEB_CLIENT_MODE_NORMAL;
+ 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->data->rbytes = 0;
- w->data->bytes = 0;
- w->data->sent = 0;
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ rrd_stats_api_v1_chart(st, w->response.data);
+ return 200;
- w->response_header[0] = '\0';
- w->data->buffer[0] = '\0';
+cleanup:
+ return ret;
+}
- w->wait_receive = 1;
- w->wait_send = 0;
+// 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);
- // 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;
+ 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);
+ debug(D_WEB_CLIENT, "%llu: generating outfilename header: '%s'", w->id, 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;
}
-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;
+int web_client_api_request_v1_registry(struct web_client *w, char *url)
+{
+ static uint32_t hash_action = 0, hash_access = 0, hash_hello = 0, hash_delete = 0, hash_search = 0,
+ hash_switch = 0, hash_machine = 0, hash_url = 0, hash_name = 0, hash_delete_url = 0, hash_for = 0,
+ hash_to = 0;
+
+ if(unlikely(!hash_action)) {
+ hash_action = simple_hash("action");
+ hash_access = simple_hash("access");
+ hash_hello = simple_hash("hello");
+ hash_delete = simple_hash("delete");
+ hash_search = simple_hash("search");
+ hash_switch = simple_hash("switch");
+ hash_machine = simple_hash("machine");
+ hash_url = simple_hash("url");
+ hash_name = simple_hash("name");
+ hash_delete_url = simple_hash("delete_url");
+ hash_for = simple_hash("for");
+ hash_to = simple_hash("to");
}
- if(w->data->sent) {
- error("%llu: Cannot enable compression in the middle of a conversation.", w->id);
- return;
+ char person_guid[36 + 1] = "";
+
+ debug(D_WEB_CLIENT, "%llu: API v1 registry with URL '%s'", w->id, url);
+
+ // FIXME
+ // The browser may send multiple cookies with our id
+
+ char *cookie = strstr(w->response.data->buffer, " " NETDATA_REGISTRY_COOKIE_NAME "=");
+ if(cookie)
+ strncpyz(person_guid, &cookie[sizeof(NETDATA_REGISTRY_COOKIE_NAME) + 1], 36);
+
+ char action = '\0';
+ char *machine_guid = NULL,
+ *machine_url = NULL,
+ *url_name = NULL,
+ *search_machine_guid = NULL,
+ *delete_url = NULL,
+ *to_person_guid = 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);
+
+ uint32_t hash = simple_hash(name);
+
+ if(hash == hash_action && !strcmp(name, "action")) {
+ uint32_t vhash = simple_hash(value);
+
+ if(vhash == hash_access && !strcmp(value, "access")) action = 'A';
+ else if(vhash == hash_hello && !strcmp(value, "hello")) action = 'H';
+ else if(vhash == hash_delete && !strcmp(value, "delete")) action = 'D';
+ else if(vhash == hash_search && !strcmp(value, "search")) action = 'S';
+ else if(vhash == hash_switch && !strcmp(value, "switch")) action = 'W';
+ }
+ else if(hash == hash_machine && !strcmp(name, "machine"))
+ machine_guid = value;
+
+ else if(hash == hash_url && !strcmp(name, "url"))
+ machine_url = value;
+
+ else if(action == 'A') {
+ if(hash == hash_name && !strcmp(name, "name"))
+ url_name = value;
+ }
+ else if(action == 'D') {
+ if(hash == hash_delete_url && !strcmp(name, "delete_url"))
+ delete_url = value;
+ }
+ else if(action == 'S') {
+ if(hash == hash_for && !strcmp(name, "for"))
+ search_machine_guid = value;
+ }
+ else if(action == 'W') {
+ if(hash == hash_to && !strcmp(name, "to"))
+ to_person_guid = value;
+ }
+ }
+
+ if(action == 'A' && (!machine_guid || !machine_url || !url_name)) {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid registry request - access requires these parameters: machine ('%s'), url ('%s'), name ('%s')",
+ machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", url_name?url_name:"UNSET");
+ return 400;
+ }
+ else if(action == 'D' && (!machine_guid || !machine_url || !delete_url)) {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid registry request - delete requires these parameters: machine ('%s'), url ('%s'), delete_url ('%s')",
+ machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", delete_url?delete_url:"UNSET");
+ return 400;
+ }
+ else if(action == 'S' && (!machine_guid || !machine_url || !search_machine_guid)) {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid registry request - search requires these parameters: machine ('%s'), url ('%s'), for ('%s')",
+ machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", search_machine_guid?search_machine_guid:"UNSET");
+ return 400;
+ }
+ else if(action == 'W' && (!machine_guid || !machine_url || !to_person_guid)) {
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid registry request - switching identity requires these parameters: machine ('%s'), url ('%s'), to ('%s')",
+ machine_guid?machine_guid:"UNSET", machine_url?machine_url:"UNSET", to_person_guid?to_person_guid:"UNSET");
+ return 400;
}
- w->zstream.zalloc = Z_NULL;
- w->zstream.zfree = Z_NULL;
- w->zstream.opaque = Z_NULL;
+ switch(action) {
+ case 'A':
+ return registry_request_access_json(w, person_guid, machine_guid, machine_url, url_name, time(NULL));
- w->zstream.next_in = (Bytef *)w->data->buffer;
- w->zstream.avail_in = 0;
- w->zstream.total_in = 0;
+ case 'D':
+ return registry_request_delete_json(w, person_guid, machine_guid, machine_url, delete_url, time(NULL));
- w->zstream.next_out = w->zbuffer;
- w->zstream.avail_out = 0;
- w->zstream.total_out = 0;
+ case 'S':
+ return registry_request_search_json(w, person_guid, machine_guid, machine_url, search_machine_guid, time(NULL));
- w->zstream.zalloc = Z_NULL;
- w->zstream.zfree = Z_NULL;
- w->zstream.opaque = Z_NULL;
+ case 'W':
+ return registry_request_switch_json(w, person_guid, machine_guid, machine_url, to_person_guid, time(NULL));
-// if(deflateInit(&w->zstream, Z_DEFAULT_COMPRESSION) != Z_OK) {
-// error("%llu: Failed to initialize zlib. Proceeding without compression.", w->id);
-// return;
-// }
+ case 'H':
+ return registry_request_hello_json(w);
- // 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;
+ default:
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid registry request - you need to set an action: hello, access, delete, search");
+ return 400;
}
- w->zsent = 0;
- w->zoutput = 1;
- w->zinitialized = 1;
+ buffer_flush(w->response.data);
+ buffer_sprintf(w->response.data, "Invalid or no registry action.");
+ return 400;
+}
- debug(D_DEFLATE, "%llu: Initialized compression.", w->id);
+int web_client_api_request_v1(struct web_client *w, char *url)
+{
+ static uint32_t hash_data = 0, hash_chart = 0, hash_charts = 0, hash_registry = 0;
+
+ if(unlikely(hash_data == 0)) {
+ hash_data = simple_hash("data");
+ hash_chart = simple_hash("chart");
+ hash_charts = simple_hash("charts");
+ hash_registry = 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 == hash_data && !strcmp(tok, "data"))
+ return web_client_api_request_v1_data(w, url);
+
+ else if(hash == hash_chart && !strcmp(tok, "chart"))
+ return web_client_api_request_v1_chart(w, url);
+
+ else if(hash == hash_charts && !strcmp(tok, "charts"))
+ return web_client_api_request_v1_charts(w, url);
+
+ else if(hash == hash_registry && !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_data_request(struct web_client *w, char *url, int datasource_type)
+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_api_old_data_request(struct web_client *w, char *url, int datasource_type)
+{
+ RRDSET *st = NULL;
+
char *args = strchr(url, '?');
if(args) {
*args='\0';
// 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(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
- w->data->bytes = 0;
+ buffer_flush(w->response.data);
return(mysendfile(w, tok));
}
if(url) {
// parse the group count required
tok = mystrsep(&url, "/");
- if(tok) group_count = atoi(tok);
+ 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(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(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) after = strtoul(tok, NULL, 10);
+ if(tok && *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(tok && *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;
+ if(tok && *tok && strcmp(tok, "nonzero") == 0) nonzero = 1;
}
- w->data->contenttype = CT_APPLICATION_JSON;
- w->data->bytes = 0;
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ buffer_flush(w->response.data);
char *google_version = "0.6";
char *google_reqId = "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) {
+ time_t last_timestamp_in_data = 0;
+ if(datasource_type == DATASOURCE_DATATABLE_JSON || datasource_type == DATASOURCE_DATATABLE_JSONP) {
- w->data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
+ w->response.data->contenttype = CT_APPLICATION_X_JAVASCRIPT;
while(args) {
tok = mystrsep(&args, "&");
- if(tok) {
+ if(tok && *tok) {
char *name = mystrsep(&tok, "=");
- if(name && strcmp(name, "tqx") == 0) {
+ if(name && *name && strcmp(name, "tqx") == 0) {
char *key = mystrsep(&tok, ":");
char *value = mystrsep(&tok, ";");
if(key && value && *key && *value) {
w->id, google_version, google_reqId, google_sig, google_out, google_responseHandler, google_outFileName
);
- if(datasource_type == DATASOURCE_GOOGLE_JSONP) {
+ 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) {
- w->data->bytes = snprintf(w->data->buffer, w->data->size,
+ 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_GOOGLE_JSONP) {
- w->data->bytes = snprintf(w->data->buffer, w->data->size,
+ 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);
- unsigned long timestamp_in_data = rrd_stats_json(datasource_type, st, w->data, lines, group_count, group_method, after, before, nonzero);
+ 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_GOOGLE_JSONP) {
+ if(datasource_type == DATASOURCE_DATATABLE_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, "});");
+ buffer_strcat(w->response.data, "});");
else {
// the client already has the latest data
- w->data->bytes = snprintf(w->data->buffer, w->data->size,
+ 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
+const char *web_content_type_to_string(uint8_t contenttype) {
+ switch(contenttype) {
+ case CT_TEXT_HTML:
+ return "text/html; charset=utf-8";
+
+ case CT_APPLICATION_XML:
+ return "application/xml; charset=utf-8";
+
+ case CT_APPLICATION_JSON:
+ return "application/json; charset=utf-8";
+
+ case CT_APPLICATION_X_JAVASCRIPT:
+ return "application/x-javascript; charset=utf-8";
+
+ case CT_TEXT_CSS:
+ return "text/css; charset=utf-8";
+
+ case CT_TEXT_XML:
+ return "text/xml; charset=utf-8";
+
+ case CT_TEXT_XSL:
+ return "text/xsl; charset=utf-8";
+
+ case CT_APPLICATION_OCTET_STREAM:
+ return "application/octet-stream";
+
+ case CT_IMAGE_SVG_XML:
+ return "image/svg+xml";
+
+ case CT_APPLICATION_X_FONT_TRUETYPE:
+ return "application/x-font-truetype";
+
+ case CT_APPLICATION_X_FONT_OPENTYPE:
+ return "application/x-font-opentype";
+
+ case CT_APPLICATION_FONT_WOFF:
+ return "application/font-woff";
+
+ case CT_APPLICATION_FONT_WOFF2:
+ return "application/font-woff2";
+
+ case CT_APPLICATION_VND_MS_FONTOBJ:
+ return "application/vnd.ms-fontobject";
+
+ case CT_IMAGE_PNG:
+ return "image/png";
+
+ case CT_IMAGE_JPG:
+ return "image/jpeg";
+
+ case CT_IMAGE_GIF:
+ return "image/gif";
+
+ case CT_IMAGE_XICON:
+ return "image/x-icon";
+
+ case CT_IMAGE_BMP:
+ return "image/bmp";
+
+ case CT_IMAGE_ICNS:
+ return "image/icns";
+
+ default:
+ case CT_TEXT_PLAIN:
+ return "text/plain; charset=utf-8";
+ }
+}
+
+
+const char *web_response_code_to_string(int code) {
+ switch(code) {
+ case 200:
+ return "OK";
- web_client_clean_request(w);
+ case 307:
+ return "Temporary Redirect";
- debug(D_WEB_DATA, "%llu: Processing data buffer of %d bytes: '%s'.", w->id, w->data->bytes, w->data->buffer);
+ case 400:
+ return "Bad Request";
- char *buf = w->data->buffer;
- char *line, *tok;
+ case 403:
+ return "Forbidden";
- // ------------------------------------------------------------------------
- // the first line
+ case 404:
+ return "Not Found";
- if(buf && (line = strsep(&buf, "\r\n"))) {
- // method
- if(line && (tok = strsep(&line, " "))) {
- w->request.protocol = strdup(tok);
- }
- else goto cleanup;
+ case 412:
+ return "Preconditions Failed";
- // url
- }
- else goto cleanup;
+ default:
+ if(code >= 100 && code < 200)
+ return "Informational";
- // ------------------------------------------------------------------------
- // the rest of the lines
+ if(code >= 200 && code < 300)
+ return "Successful";
- while(buf && (line = strsep(&buf, "\r\n"))) {
- while(line && (tok = strsep(&line, ": "))) {
- }
- }
+ if(code >= 300 && code < 400)
+ return "Redirection";
- char *url = NULL;
+ if(code >= 400 && code < 500)
+ return "Bad Request";
+ if(code >= 500 && code < 600)
+ return "Server Error";
-cleanup:
- web_client_clean_request(w);
- return 0;
+ return "Undefined Error";
+ }
}
-*/
-void web_client_process(struct web_client *w) {
- int code = 500;
- int bytes;
+static inline char *http_header_parse(struct web_client *w, char *s) {
+ static uint32_t hash_origin = 0, hash_connection = 0, hash_accept_encoding = 0;
- w->wait_receive = 0;
+ if(unlikely(!hash_origin)) {
+ hash_origin = simple_uhash("Origin");
+ hash_connection = simple_uhash("Connection");
+ hash_accept_encoding = simple_uhash("Accept-Encoding");
+ }
- // 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();
+ char *e = s;
- 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);
+ // find the :
+ while(*e && *e != ':') e++;
+ if(!*e || e[1] != ' ') return e;
+
+ // get the name
+ *e = '\0';
- // check if the client requested keep-alive HTTP
- if(strcasestr(w->data->buffer, "Connection: keep-alive")) w->keepalive = 1;
- else w->keepalive = 0;
+ // find the value
+ char *v, *ve;
+ v = ve = e + 2;
- // check if the client accepts deflate
- if(web_enable_gzip && strstr(w->data->buffer, "gzip"))
- web_client_enable_deflate(w);
+ // find the \r
+ while(*ve && *ve != '\r') ve++;
+ if(!*ve || ve[1] != '\n') {
+ *e = ':';
+ return ve;
+ }
- int datasource_type = DATASOURCE_GOOGLE_JSONP;
- //if(strstr(w->data->buffer, "X-DataSource-Auth"))
- // datasource_type = DATASOURCE_GOOGLE_JSON;
+ // terminate the value
+ *ve = '\0';
- char *buf = w->data->buffer;
- char *tok = strsep(&buf, " \r\n");
- char *url = NULL;
- char *pointer_to_free = NULL; // keep url_decode() allocated buffer
+ // fprintf(stderr, "HEADER: '%s' = '%s'\n", s, v);
+ uint32_t hash = simple_uhash(s);
- 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);
+ if(hash == hash_origin && !strcasecmp(s, "Origin"))
+ strncpyz(w->origin, v, ORIGIN_MAX);
- 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);
+ else if(hash == hash_connection && !strcasecmp(s, "Connection")) {
+ if(strcasestr(v, "keep-alive"))
+ w->keepalive = 1;
+ }
+#ifdef NETDATA_WITH_ZLIB
+ else if(hash == hash_accept_encoding && !strcasecmp(s, "Accept-Encoding")) {
+ if(web_enable_gzip) {
+ if(strcasestr(v, "gzip"))
+ web_client_enable_deflate(w, 1);
+ //
+ // does not seem to work
+ // else if(strcasestr(v, "deflate"))
+ // web_client_enable_deflate(w, 0);
}
+ }
+#endif /* NETDATA_WITH_ZLIB */
- w->last_url[0] = '\0';
- if(url) {
- strncpy(w->last_url, url, URL_MAX);
- w->last_url[URL_MAX] = '\0';
+ *e = ':';
+ *ve = '\r';
+ return ve;
+}
- tok = mystrsep(&url, "/?&");
+// http_request_validate()
+// returns:
+// = 0 : all good, process the request
+// > 0 : request is not supported
+// < 0 : request is incomplete - wait for more data
- debug(D_WEB_CLIENT, "%llu: Processing command '%s'.", w->id, tok);
+static inline int http_request_validate(struct web_client *w) {
+ char *s = w->response.data->buffer, *encoded_url = NULL;
- 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;
+ // is is a valid request?
+ if(!strncmp(s, "GET ", 4)) {
+ encoded_url = s = &s[4];
+ w->mode = WEB_CLIENT_MODE_NORMAL;
+ }
+ else if(!strncmp(s, "OPTIONS ", 8)) {
+ encoded_url = s = &s[8];
+ w->mode = WEB_CLIENT_MODE_OPTIONS;
+ }
+ else {
+ w->wait_receive = 0;
+ return 1;
+ }
- debug(D_WEB_CLIENT_ACCESS, "%llu: Mirroring...", w->id);
+ // find the SPACE + "HTTP/"
+ while(*s) {
+ // find the next space
+ while (*s && *s != ' ') s++;
- // 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] = ' ';
+ // is it SPACE + "HTTP/" ?
+ if(*s && !strncmp(s, " HTTP/", 6)) break;
+ else s++;
+ }
- // just leave the buffer as is
- // it will be copied back to the client
- }
- else if(strcmp(tok, "list") == 0) {
- code = 200;
+ // incomplete requests
+ if(unlikely(!*s)) {
+ w->wait_receive = 1;
+ return -2;
+ }
- debug(D_WEB_CLIENT_ACCESS, "%llu: Sending list of RRD_STATS...", w->id);
+ // we have the end of encoded_url - remember it
+ char *ue = s;
- w->data->bytes = 0;
- RRDSET *st = rrdset_root;
+ // make sure we have complete request
+ // complete requests contain: \r\n\r\n
+ while(*s) {
+ // find a line feed
+ while(*s && *s++ != '\r');
- 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);
+ // did we reach the end?
+ if(unlikely(!*s)) break;
- 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);
+ // is it \r\n ?
+ if(likely(*s++ == '\n')) {
- 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);
- }
+ // is it again \r\n ? (header end)
+ if(unlikely(*s == '\r' && s[1] == '\n')) {
+ // a valid complete HTTP request found
- }
- else {
- strcpy(w->last_url, "not a valid response");
+ *ue = '\0';
+ url_decode_r(w->decoded_url, encoded_url, URL_MAX + 1);
+ *ue = ' ';
+
+ // copy the URL - we are going to overwrite parts of it
+ // FIXME -- we should avoid it
+ strncpyz(w->last_url, w->decoded_url, URL_MAX);
- if(buf) debug(D_WEB_CLIENT_ACCESS, "%llu: Cannot understand '%s'.", w->id, buf);
+ w->wait_receive = 0;
+ return 0;
+ }
- code = 500;
- w->data->bytes = 0;
- strcpy(w->data->buffer, "I don't understand you...\r\n");
- w->data->bytes = strlen(w->data->buffer);
+ // another header line
+ s = http_header_parse(w, s);
}
-
- // 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;
- }
+ // incomplete request
+ w->wait_receive = 1;
+ return -3;
+}
- if(w->data->bytes > w->data->size) {
- error("%llu: memory overflow encountered (size is %ld, written %ld).", w->data->size, w->data->bytes);
+void web_client_process(struct web_client *w) {
+ static uint32_t hash_api = 0, hash_netdata_conf = 0, hash_data = 0, hash_datasource = 0, hash_graph = 0,
+ hash_list = 0, hash_all_json = 0, hash_exit = 0, hash_debug = 0, hash_mirror = 0;
+
+ if(unlikely(!hash_api)) {
+ hash_api = simple_hash("api");
+ hash_netdata_conf = simple_hash("netdata.conf");
+ hash_data = simple_hash(WEB_PATH_DATA);
+ hash_datasource = simple_hash(WEB_PATH_DATASOURCE);
+ hash_graph = simple_hash(WEB_PATH_GRAPH);
+ hash_list = simple_hash("list");
+ hash_all_json = simple_hash("all.json");
+ hash_exit = simple_hash("exit");
+ hash_debug = simple_hash("debug");
+ hash_mirror = simple_hash("mirror");
}
- 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);
+ int code = 500;
+ ssize_t bytes;
- char *content_type_string = "";
- switch(w->data->contenttype) {
- case CT_TEXT_HTML:
- content_type_string = "text/html";
- break;
+ int what_to_do = http_request_validate(w);
- case CT_APPLICATION_XML:
- content_type_string = "application/xml";
- break;
+ // wait for more data
+ if(what_to_do < 0) {
+ if(w->response.data->len > TOO_BIG_REQUEST) {
+ strcpy(w->last_url, "too big request");
- case CT_APPLICATION_JSON:
- content_type_string = "application/json";
- break;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Received request is too big (%zd bytes).", w->id, w->response.data->len);
- case CT_APPLICATION_X_JAVASCRIPT:
- content_type_string = "application/x-javascript";
- break;
+ 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
+ return;
+ }
+ }
+ else if(what_to_do > 0) {
+ strcpy(w->last_url, "not a valid request");
- case CT_TEXT_CSS:
- content_type_string = "text/css";
- break;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Cannot understand '%s'.", w->id, w->response.data->buffer);
- case CT_TEXT_XML:
- content_type_string = "text/xml";
- break;
+ code = 500;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "I don't understand you...\r\n");
+ }
+ else { // what_to_do == 0
+ gettimeofday(&w->tv_in, NULL);
- case CT_TEXT_XSL:
- content_type_string = "text/xsl";
- break;
+ if(w->mode == WEB_CLIENT_MODE_OPTIONS) {
+ code = 200;
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "OK");
+ }
+ else {
+ char *url = w->decoded_url;
+ char *tok = mystrsep(&url, "/?");
+ if(tok && *tok) {
+ uint32_t hash = simple_hash(tok);
+ debug(D_WEB_CLIENT, "%llu: Processing command '%s'.", w->id, tok);
+
+ if(hash == hash_api && strcmp(tok, "api") == 0) {
+ // the client is requesting api access
+ code = web_client_api_request(w, url);
+ }
+ else if(hash == hash_netdata_conf && strcmp(tok, "netdata.conf") == 0) {
+ code = 200;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending netdata.conf ...", w->id);
- case CT_APPLICATION_OCTET_STREAM:
- content_type_string = "application/octet-stream";
- break;
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
+ generate_config(w->response.data, 0);
+ }
+ else if(hash == hash_data && strcmp(tok, WEB_PATH_DATA) == 0) { // "data"
+ // the client is requesting rrd data -- OLD API
+ code = web_client_api_old_data_request(w, url, DATASOURCE_JSON);
+ }
+ else if(hash == hash_datasource && strcmp(tok, WEB_PATH_DATASOURCE) == 0) { // "datasource"
+ // the client is requesting google datasource -- OLD API
+ code = web_client_api_old_data_request(w, url, DATASOURCE_DATATABLE_JSONP);
+ }
+ else if(hash == hash_graph && strcmp(tok, WEB_PATH_GRAPH) == 0) { // "graph"
+ // the client is requesting an rrd graph -- OLD API
+
+ // get the name of the data to show
+ tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
+
+ // do we have such a data set?
+ RRDSET *st = rrdset_find_byname(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");
+ }
+ }
+ else if(hash == hash_list && strcmp(tok, "list") == 0) {
+ // OLD API
+ code = 200;
- case CT_IMAGE_SVG_XML:
- content_type_string = "image/svg+xml";
- break;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending list of RRD_STATS...", w->id);
- case CT_APPLICATION_X_FONT_TRUETYPE:
- content_type_string = "application/x-font-truetype";
- break;
+ buffer_flush(w->response.data);
+ RRDSET *st = rrdset_root;
- case CT_APPLICATION_X_FONT_OPENTYPE:
- content_type_string = "application/x-font-opentype";
- break;
+ for ( ; st ; st = st->next )
+ buffer_sprintf(w->response.data, "%s\n", st->name);
+ }
+ else if(hash == hash_all_json && strcmp(tok, "all.json") == 0) {
+ // OLD API
+ code = 200;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Sending JSON list of all monitors of RRD_STATS...", w->id);
- case CT_APPLICATION_FONT_WOFF:
- content_type_string = "application/font-woff";
- break;
+ w->response.data->contenttype = CT_APPLICATION_JSON;
+ buffer_flush(w->response.data);
+ rrd_stats_all_json(w->response.data);
+ }
+#ifdef NETDATA_INTERNAL_CHECKS
+ else if(hash == hash_exit && strcmp(tok, "exit") == 0) {
+ code = 200;
+ w->response.data->contenttype = CT_TEXT_PLAIN;
+ buffer_flush(w->response.data);
- case CT_APPLICATION_VND_MS_FONTOBJ:
- content_type_string = "application/vnd.ms-fontobject";
- break;
+ if(!netdata_exit)
+ buffer_strcat(w->response.data, "ok, will do...");
+ else
+ buffer_strcat(w->response.data, "I am doing it already");
- default:
- case CT_TEXT_PLAIN:
- content_type_string = "text/plain";
- break;
- }
+ netdata_exit = 1;
+ }
+ else if(hash == hash_debug && strcmp(tok, "debug") == 0) {
+ buffer_flush(w->response.data);
+
+ // get the name of the data to show
+ tok = mystrsep(&url, "/?&");
+ if(tok && *tok) {
+ debug(D_WEB_CLIENT, "%llu: Searching for RRD data with name '%s'.", w->id, tok);
+
+ // do we have such a data set?
+ RRDSET *st = rrdset_find_byname(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;
+ 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(hash == hash_mirror && strcmp(tok, "mirror") == 0) {
+ code = 200;
- char *code_msg = "";
- switch(code) {
- case 200:
- code_msg = "OK";
- break;
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Mirroring...", w->id);
- case 307:
- code_msg = "Temporary Redirect";
- break;
+ // replace the zero bytes with spaces
+ buffer_char_replace(w->response.data, '\0', ' ');
- case 400:
- code_msg = "Bad Request";
- break;
+ // just leave the buffer as is
+ // it will be copied back to the client
+ }
+#endif /* NETDATA_INTERNAL_CHECKS */
+ else {
+ char filename[FILENAME_MAX+1];
+ url = filename;
+ strncpyz(filename, w->last_url, FILENAME_MAX);
+ tok = mystrsep(&url, "?");
+ buffer_flush(w->response.data);
+ code = mysendfile(w, (tok && *tok)?tok:"/");
+ }
+ }
+ else {
+ char filename[FILENAME_MAX+1];
+ url = filename;
+ strncpyz(filename, w->last_url, FILENAME_MAX);
+ tok = mystrsep(&url, "?");
+ buffer_flush(w->response.data);
+ code = mysendfile(w, (tok && *tok)?tok:"/");
+ }
+ }
+ }
- case 403:
- code_msg = "Forbidden";
- break;
+ gettimeofday(&w->tv_ready, NULL);
+ w->response.data->date = time(NULL);
+ w->response.sent = 0;
+ w->response.code = code;
- case 404:
- code_msg = "Not Found";
- break;
+ // prepare the HTTP response header
+ debug(D_WEB_CLIENT, "%llu: Generating HTTP header with response %d.", w->id, code);
- default:
- code_msg = "Internal Server Error";
- break;
- }
+ const char *content_type_string = web_content_type_to_string(w->response.data->contenttype);
+ const char *code_msg = web_response_code_to_string(code);
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);
+ struct tm tmbuf, *tm = gmtime_r(&w->response.data->date, &tmbuf);
+ strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S %Z", tm);
- int headerlen = 0;
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
+ 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: %s\r\n"
+ "Access-Control-Allow-Credentials: true\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"
+ , w->origin
, content_type_string
, date
);
- if(custom_header[0])
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen, "%s", custom_header);
+ if(w->cookie1[0]) {
+ buffer_sprintf(w->response.header_output,
+ "Set-Cookie: %s\r\n",
+ w->cookie1);
+ }
+
+ if(w->cookie2[0]) {
+ buffer_sprintf(w->response.header_output,
+ "Set-Cookie: %s\r\n",
+ w->cookie2);
+ }
+
+ if(w->mode == WEB_CLIENT_MODE_OPTIONS) {
+ buffer_strcat(w->response.header_output,
+ "Access-Control-Allow-Methods: GET, OPTIONS\r\n"
+ "Access-Control-Allow-Headers: accept, x-requested-with, origin, content-type, cookie\r\n"
+ "Access-Control-Max-Age: 1209600\r\n" // 86400 * 14
+ );
+ }
- if(w->mode == WEB_CLIENT_MODE_NORMAL) {
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
+ 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
- );
+ , date);
}
- else {
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
+ 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->zoutput && (w->data->bytes || w->data->rbytes))
- headerlen += snprintf(&w->response_header[headerlen], MAX_HTTP_HEADER_SIZE - headerlen,
+ if(!w->response.zoutput && (w->response.data->len || w->response.rlen))
+ buffer_sprintf(w->response.header_output,
"Content-Length: %ld\r\n"
- , w->data->bytes?w->data->bytes:w->data->rbytes
+ , w->response.data->len? w->response.data->len: w->response.rlen
);
- else if(!w->zoutput)
+ else if(!w->response.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,
+ if(w->response.zoutput) {
+ buffer_strcat(w->response.header_output,
"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);
+ buffer_strcat(w->response.header_output, "\r\n");
// sent the HTTP header
- debug(D_WEB_DATA, "%llu: Sending response HTTP header of size %d: '%s'", w->id, headerlen, w->response_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, 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();
- }
+ web_client_crock_socket(w);
- // 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);
+ 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)) {
+ if(bytes > 0)
+ w->stats_sent_bytes += bytes;
+
+ debug(D_WEB_CLIENT, "%llu: HTTP Header failed to be sent (I sent %d bytes but the system sent %d bytes). Closing web client.", w->id,
+ buffer_strlen(w->response.header_output), bytes);
+
+ WEB_CLIENT_IS_DEAD(w);
+ return;
+ }
+ else
+ w->stats_sent_bytes += bytes;
// enable sending immediately if we have data
- if(w->data->bytes) w->wait_send = 1;
+ 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->data->bytes);
+ 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->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);
+ 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;
/*
// 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);
+ 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);
}
*/
}
}
}
-long web_client_send_chunk_header(struct web_client *w, int len)
+ssize_t web_client_send_chunk_header(struct web_client *w, size_t 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);
+ sprintf(buf, "%lX\r\n", len);
+
+ ssize_t bytes = send(w->ofd, buf, strlen(buf), 0);
+ if(bytes > 0) {
+ debug(D_DEFLATE, "%llu: Sent chunk header %d bytes.", w->id, bytes);
+ w->stats_sent_bytes += bytes;
+ }
- 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));
+ else if(bytes == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send chunk header to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send chunk header to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return bytes;
}
-long web_client_send_chunk_close(struct web_client *w)
+ssize_t 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);
+ ssize_t bytes = send(w->ofd, "\r\n", 2, 0);
+ if(bytes > 0) {
+ debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
+ w->stats_sent_bytes += bytes;
+ }
- 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));
+ else if(bytes == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send chunk suffix to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send chunk suffix to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return bytes;
}
-long web_client_send_chunk_finalize(struct web_client *w)
+ssize_t 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);
+ ssize_t bytes = send(w->ofd, "\r\n0\r\n\r\n", 7, 0);
+ if(bytes > 0) {
+ debug(D_DEFLATE, "%llu: Sent chunk suffix %d bytes.", w->id, bytes);
+ w->stats_sent_bytes += bytes;
+ }
- 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));
+ else if(bytes == 0) {
+ debug(D_WEB_CLIENT, "%llu: Did not send chunk finalize suffix to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send chunk finalize suffix to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return bytes;
}
-long web_client_send_deflate(struct web_client *w)
+#ifdef NETDATA_WITH_ZLIB
+ssize_t web_client_send_deflate(struct web_client *w)
{
- long bytes = 0, t = 0;
+ ssize_t len = 0, t = 0;
// when using compression,
- // w->data->sent is the amount of bytes passed through compression
+ // w->response.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);
+ 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->data->bytes - w->data->sent == 0 && w->zstream.avail_in == 0 && w->zhave == w->zsent && w->zstream.avail_out != 0) {
+ 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->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->response.sent != 0) {
+ t = web_client_send_chunk_finalize(w);
+ if(t < 0) return t;
+ }
- if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && w->ifd != w->ofd && w->data->rbytes && w->data->rbytes > w->data->bytes) {
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && 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);
+ return t;
}
- 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);
+ if(unlikely(!w->keepalive)) {
+ debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %ld bytes sent.", w->id, w->response.sent);
+ WEB_CLIENT_IS_DEAD(w);
+ return t;
}
// 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);
+ debug(D_WEB_CLIENT, "%llu: Done sending all data on socket.", w->id);
+ return t;
}
- if(w->zstream.avail_out == 0 && w->zhave == w->zsent) {
+ if(w->response.zhave == w->response.zsent) {
// compress more input data
// close the previous open chunk
- if(w->data->sent != 0) t += web_client_send_chunk_close(w);
+ if(w->response.sent != 0) {
+ t = web_client_send_chunk_close(w);
+ if(t < 0) return t;
+ }
- debug(D_DEFLATE, "%llu: Compressing %d bytes starting from %d.", w->id, (w->data->bytes - w->data->sent), w->data->sent);
+ 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->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);
+ if(w->response.data->len > w->response.sent) {
+ 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->zstream.next_out = w->zbuffer;
- w->zstream.avail_out = ZLIB_CHUNK;
+ 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->data->bytes == w->data->rbytes)) {
+ || (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.", w->id);
+ 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->zstream, flush) == Z_STREAM_ERROR) {
+ 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->zhave = ZLIB_CHUNK - w->zstream.avail_out;
- w->zsent = 0;
+ w->response.zhave = ZLIB_CHUNK - w->response.zstream.avail_out;
+ w->response.zsent = 0;
// keep track of the bytes passed through the compressor
- w->data->sent = w->data->bytes;
+ w->response.sent = w->response.data->len;
- debug(D_DEFLATE, "%llu: Compression produced %d bytes.", w->id, w->zhave);
+ 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->zhave);
+ ssize_t t2 = web_client_send_chunk_header(w, w->response.zhave);
+ if(t2 < 0) return t2;
+ t += t2;
}
-
- 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);
+
+ 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->stats_sent_bytes += len;
+ w->response.zsent += len;
+ 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);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
}
- 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);
+ return(len);
}
+#endif // NETDATA_WITH_ZLIB
-long web_client_send(struct web_client *w)
-{
- if(w->zoutput) return web_client_send_deflate(w);
+ssize_t 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;
+ ssize_t bytes;
- if(w->data->bytes - w->data->sent == 0) {
+ 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);
// 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) {
+ if(w->mode == WEB_CLIENT_MODE_FILECOPY && w->wait_receive && 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);
+ 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);
+ if(unlikely(!w->keepalive)) {
+ debug(D_WEB_CLIENT, "%llu: Closing (keep-alive is not enabled). %ld bytes sent.", w->id, w->response.sent);
+ WEB_CLIENT_IS_DEAD(w);
+ return 0;
}
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);
+ 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;
+ 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->stats_sent_bytes += bytes;
+ w->response.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));
-
+ else if(likely(bytes == 0)) {
+ debug(D_WEB_CLIENT, "%llu: Did not send any bytes to the client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
+ else {
+ debug(D_WEB_CLIENT, "%llu: Failed to send data to client.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return(bytes);
}
-long web_client_receive(struct web_client *w)
+ssize_t 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);
+ buffer_need_bytes(w->response.data, WEB_REQUEST_LENGTH);
- long left = w->data->size - w->data->bytes;
- long bytes;
+ ssize_t left = w->response.data->size - w->response.data->len;
+ ssize_t bytes;
- if(w->mode == WEB_CLIENT_MODE_FILECOPY)
- bytes = read(w->ifd, &w->data->buffer[w->data->bytes], (left-1));
+ 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->data->buffer[w->data->bytes], left-1, MSG_DONTWAIT);
+ bytes = recv(w->ifd, &w->response.data->buffer[w->response.data->len], (size_t) (left - 1), MSG_DONTWAIT);
- if(bytes > 0) {
- int old = w->data->bytes;
- w->data->bytes += bytes;
- w->data->buffer[w->data->bytes] = '\0';
+ if(likely(bytes > 0)) {
+ if(w->mode != WEB_CLIENT_MODE_FILECOPY)
+ w->stats_received_bytes += bytes;
+
+ 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->data->buffer[old]);
+ 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->data->rbytes && w->data->bytes >= w->data->rbytes) w->wait_receive = 0;
+
+ if(w->response.rlen && w->response.data->len >= w->response.rlen)
+ w->wait_receive = 0;
}
}
- else if(bytes == 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.
// 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);
+
+ debug(D_WEB_CLIENT, "%llu: Read the whole file.", w->id);
+ if(w->ifd != w->ofd) close(w->ifd);
+ w->ifd = w->ofd;
}
else {
- bytes = -1;
- errno = 0;
+ debug(D_WEB_CLIENT, "%llu: failed to receive data.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
}
}
+ else {
+ debug(D_WEB_CLIENT, "%llu: receive data failed.", w->id);
+ WEB_CLIENT_IS_DEAD(w);
+ }
return(bytes);
}
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);
+ struct pollfd fds[2], *ifd, *ofd;
+ int retval, fdmax = 0, timeout;
- if(w->ifd != w->ofd)
- FD_SET(w->ofd, &efds);
+ log_access("%llu: %s port %s connected on thread task id %d", w->id, w->client_ip, w->client_port, gettid());
- if (w->wait_receive) {
- FD_SET(w->ifd, &ifds);
- if(w->ifd > fdmax) fdmax = w->ifd;
+ for(;;) {
+ if(unlikely(w->dead)) {
+ debug(D_WEB_CLIENT, "%llu: client is dead.", w->id);
+ break;
+ }
+ else if(unlikely(!w->wait_receive && !w->wait_send)) {
+ debug(D_WEB_CLIENT, "%llu: client is not set for neither receiving nor sending data.");
+ break;
}
- if (w->wait_send) {
- FD_SET(w->ofd, &ofds);
- if(w->ofd > fdmax) fdmax = w->ofd;
+ if(unlikely(w->ifd < 0 || w->ofd < 0)) {
+ error("%llu: invalid file descriptor, ifd = %d, ofd = %d (required 0 <= fd", w->id, w->ifd, w->ofd);
+ break;
}
- tv.tv_sec = web_client_timeout;
- tv.tv_usec = 0;
+ if(w->ifd == w->ofd) {
+ fds[0].fd = w->ifd;
+ fds[0].events = 0;
+ fds[0].revents = 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(w->wait_receive) fds[0].events |= POLLIN;
+ if(w->wait_send) fds[0].events |= POLLOUT;
- if(retval == -1) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: LISTENER: select() failed.", w->id);
- continue;
+ fds[1].fd = -1;
+ fds[1].events = 0;
+ fds[1].revents = 0;
+
+ ifd = ofd = &fds[0];
+
+ fdmax = 1;
}
- else if(!retval) {
- // timeout
- debug(D_WEB_CLIENT_ACCESS, "%llu: LISTENER: timeout.", w->id);
- break;
+ else {
+ fds[0].fd = w->ifd;
+ fds[0].events = 0;
+ fds[0].revents = 0;
+ if(w->wait_receive) fds[0].events |= POLLIN;
+ ifd = &fds[0];
+
+ fds[1].fd = w->ofd;
+ fds[1].events = 0;
+ fds[1].revents = 0;
+ if(w->wait_send) fds[1].events |= POLLOUT;
+ ofd = &fds[1];
+
+ fdmax = 2;
}
- if(FD_ISSET(w->ifd, &efds)) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on input socket (%s).", w->id, strerror(errno));
+ debug(D_WEB_CLIENT, "%llu: Waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
+ errno = 0;
+ timeout = web_client_timeout * 1000;
+ retval = poll(fds, fdmax, timeout);
+
+ if(unlikely(retval == -1)) {
+ if(errno == EAGAIN || errno == EINTR) {
+ debug(D_WEB_CLIENT, "%llu: EAGAIN received.", w->id);
+ continue;
+ }
+
+ debug(D_WEB_CLIENT, "%llu: LISTENER: poll() failed (input fd = %d, output fd = %d). Closing client.", w->id, w->ifd, w->ofd);
break;
}
-
- if(FD_ISSET(w->ofd, &efds)) {
- debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on output socket (%s).", w->id, strerror(errno));
+ else if(unlikely(!retval)) {
+ debug(D_WEB_CLIENT, "%llu: Timeout while waiting socket async I/O for %s %s", w->id, w->wait_receive?"INPUT":"", w->wait_send?"OUTPUT":"");
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 (ouput: %s).", w->id, strerror(errno));
- errno = 0;
+ int used = 0;
+ if(w->wait_send && ofd->revents & POLLOUT) {
+ used++;
+ if(web_client_send(w) < 0) {
+ debug(D_WEB_CLIENT, "%llu: Cannot send data to client. Closing client.", w->id);
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 (input: %s).", w->id, strerror(errno));
- errno = 0;
+ if(w->wait_receive && (ifd->revents & POLLIN || ifd->revents & POLLPRI)) {
+ used++;
+ if(web_client_receive(w) < 0) {
+ debug(D_WEB_CLIENT, "%llu: Cannot receive data from client. Closing client.", w->id);
break;
}
- global_statistics_lock();
- global_statistics.bytes_received += bytes;
- global_statistics_unlock();
-
if(w->mode == WEB_CLIENT_MODE_NORMAL) {
debug(D_WEB_CLIENT, "%llu: Attempting to process received data.", w->id);
web_client_process(w);
}
}
+
+ if(unlikely(!used)) {
+ debug(D_WEB_CLIENT_ACCESS, "%llu: Received error on socket.", w->id);
+ break;
+ }
}
+ web_client_reset(w);
+
+ 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);
+ // close the sockets/files now
+ // to free file descriptors
+ if(w->ifd == w->ofd) {
+ if(w->ifd != -1) close(w->ifd);
+ }
+ else {
+ if(w->ifd != -1) close(w->ifd);
+ if(w->ofd != -1) close(w->ofd);
+ }
+ w->ifd = -1;
+ w->ofd = -1;
+
w->obsolete = 1;
+ pthread_exit(NULL);
return NULL;
}
projects / netdata.git / blobdiff