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// SPDX-License-Identifier: GPL-3.0-or-later
#define WEB_SERVER_INTERNALS 1
#include "web_server.h"
WEB_SERVER_MODE web_server_mode = WEB_SERVER_MODE_STATIC_THREADED;
// --------------------------------------------------------------------------------------
WEB_SERVER_MODE web_server_mode_id(const char *mode) {
if(!strcmp(mode, "none"))
return WEB_SERVER_MODE_NONE;
else
return WEB_SERVER_MODE_STATIC_THREADED;
}
const char *web_server_mode_name(WEB_SERVER_MODE id) {
switch(id) {
case WEB_SERVER_MODE_NONE:
return "none";
default:
case WEB_SERVER_MODE_STATIC_THREADED:
return "static-threaded";
}
}
// --------------------------------------------------------------------------------------
// API sockets
LISTEN_SOCKETS api_sockets = {
.config = &netdata_config,
.config_section = CONFIG_SECTION_WEB,
.default_bind_to = "*",
.default_port = API_LISTEN_PORT,
.backlog = API_LISTEN_BACKLOG
};
void debug_sockets() {
BUFFER *wb = buffer_create(256 * sizeof(char), NULL);
int i;
for(i = 0 ; i < (int)api_sockets.opened ; i++) {
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_NOCHECK)?"NONE ":"");
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_DASHBOARD)?"dashboard ":"");
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_REGISTRY)?"registry ":"");
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_BADGE)?"badges ":"");
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_MGMT)?"management ":"");
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_STREAMING)?"streaming ":"");
buffer_strcat(wb, (api_sockets.fds_acl_flags[i] & WEB_CLIENT_ACL_NETDATACONF)?"netdata.conf ":"");
debug(D_WEB_CLIENT, "Socket fd %d name '%s' acl_flags: %s",
i,
api_sockets.fds_names[i],
buffer_tostring(wb));
buffer_reset(wb);
}
buffer_free(wb);
}
void api_listen_sockets_setup(void) {
int socks = listen_sockets_setup(&api_sockets);
if(!socks)
fatal("LISTENER: Cannot listen on any API socket. Exiting...");
if(unlikely(debug_flags & D_WEB_CLIENT))
debug_sockets();
return;
}
// --------------------------------------------------------------------------------------
// access lists
SIMPLE_PATTERN *web_allow_connections_from = NULL;
int web_allow_connections_dns;
// WEB_CLIENT_ACL
SIMPLE_PATTERN *web_allow_dashboard_from = NULL;
int web_allow_dashboard_dns;
SIMPLE_PATTERN *web_allow_registry_from = NULL;
int web_allow_registry_dns;
SIMPLE_PATTERN *web_allow_badges_from = NULL;
int web_allow_badges_dns;
SIMPLE_PATTERN *web_allow_mgmt_from = NULL;
int web_allow_mgmt_dns;
SIMPLE_PATTERN *web_allow_streaming_from = NULL;
int web_allow_streaming_dns;
SIMPLE_PATTERN *web_allow_netdataconf_from = NULL;
int web_allow_netdataconf_dns;
void web_client_update_acl_matches(struct web_client *w) {
w->acl = WEB_CLIENT_ACL_NONE;
if (!web_allow_dashboard_from ||
connection_allowed(w->ifd, w->client_ip, w->client_host, sizeof(w->client_host),
web_allow_dashboard_from, "dashboard", web_allow_dashboard_dns))
w->acl |= WEB_CLIENT_ACL_DASHBOARD;
if (!web_allow_registry_from ||
connection_allowed(w->ifd, w->client_ip, w->client_host, sizeof(w->client_host),
web_allow_registry_from, "registry", web_allow_registry_dns))
w->acl |= WEB_CLIENT_ACL_REGISTRY;
if (!web_allow_badges_from ||
connection_allowed(w->ifd, w->client_ip, w->client_host, sizeof(w->client_host),
web_allow_badges_from, "badges", web_allow_badges_dns))
w->acl |= WEB_CLIENT_ACL_BADGE;
if (!web_allow_mgmt_from ||
connection_allowed(w->ifd, w->client_ip, w->client_host, sizeof(w->client_host),
web_allow_mgmt_from, "management", web_allow_mgmt_dns))
w->acl |= WEB_CLIENT_ACL_MGMT;
if (!web_allow_streaming_from ||
connection_allowed(w->ifd, w->client_ip, w->client_host, sizeof(w->client_host),
web_allow_streaming_from, "streaming", web_allow_streaming_dns))
w->acl |= WEB_CLIENT_ACL_STREAMING;
if (!web_allow_netdataconf_from ||
connection_allowed(w->ifd, w->client_ip, w->client_host, sizeof(w->client_host),
web_allow_netdataconf_from, "netdata.conf", web_allow_netdataconf_dns))
w->acl |= WEB_CLIENT_ACL_NETDATACONF;
w->acl &= w->port_acl;
}
// --------------------------------------------------------------------------------------
void web_server_log_connection(struct web_client *w, const char *msg) {
log_access("%llu: %d '[%s]:%s' '%s'", w->id, gettid(), w->client_ip, w->client_port, msg);
}
// --------------------------------------------------------------------------------------
void web_client_initialize_connection(struct web_client *w) {
int flag = 1;
if(unlikely(web_client_check_tcp(w) && setsockopt(w->ifd, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int)) != 0))
debug(D_WEB_CLIENT, "%llu: failed to enable TCP_NODELAY on socket fd %d.", w->id, w->ifd);
flag = 1;
if(unlikely(setsockopt(w->ifd, SOL_SOCKET, SO_KEEPALIVE, (char *) &flag, sizeof(int)) != 0))
debug(D_WEB_CLIENT, "%llu: failed to enable SO_KEEPALIVE on socket fd %d.", w->id, w->ifd);
web_client_update_acl_matches(w);
w->origin[0] = '*'; w->origin[1] = '\0';
w->cookie1[0] = '\0'; w->cookie2[0] = '\0';
freez(w->user_agent); w->user_agent = NULL;
web_client_enable_wait_receive(w);
web_server_log_connection(w, "CONNECTED");
web_client_cache_verify(0);
}
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