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-rw-r--r--libnetdata/socket/Makefile.am5
-rw-r--r--libnetdata/socket/Makefile.in519
-rw-r--r--libnetdata/socket/socket.c24
-rw-r--r--libnetdata/socket/socket.h6
4 files changed, 539 insertions, 15 deletions
diff --git a/libnetdata/socket/Makefile.am b/libnetdata/socket/Makefile.am
index 1cb69ed99..161784b8f 100644
--- a/libnetdata/socket/Makefile.am
+++ b/libnetdata/socket/Makefile.am
@@ -3,7 +3,6 @@
AUTOMAKE_OPTIONS = subdir-objects
MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
-
dist_noinst_DATA = \
- README.md \
- $(NULL)
+ README.md \
+ $(NULL)
diff --git a/libnetdata/socket/Makefile.in b/libnetdata/socket/Makefile.in
new file mode 100644
index 000000000..d6e64cacd
--- /dev/null
+++ b/libnetdata/socket/Makefile.in
@@ -0,0 +1,519 @@
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+# @configure_input@
+
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libnetdata/socket/socket.c b/libnetdata/socket/socket.c
index fa1414dc0..2289bf4c4 100644
--- a/libnetdata/socket/socket.c
+++ b/libnetdata/socket/socket.c
@@ -1007,13 +1007,16 @@ int accept4(int sock, struct sockaddr *addr, socklen_t *addrlen, int flags) {
* of *writable* bytes (i.e. be aware of the strdup used to compact the pollinfo).
*/
extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list,
- const char *patname) {
+ const char *patname, int allow_dns)
+{
+ debug(D_LISTENER,"checking %s... (allow_dns=%d)", patname, allow_dns);
if (!access_list)
return 1;
if (simple_pattern_matches(access_list, client_ip))
return 1;
// If the hostname is unresolved (and needed) then attempt the DNS lookups.
- if (client_host[0]==0)
+ //if (client_host[0]==0 && simple_pattern_is_potential_name(access_list))
+ if (client_host[0]==0 && allow_dns)
{
struct sockaddr_storage sadr;
socklen_t addrlen = sizeof(sadr);
@@ -1021,8 +1024,8 @@ extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t
if (err != 0 ||
(err = getnameinfo((struct sockaddr *)&sadr, addrlen, client_host, (socklen_t)hostsize,
NULL, 0, NI_NAMEREQD)) != 0) {
- error("Incoming connection on '%s' does not match a numeric pattern, "
- "and host could not be resolved (err=%s)", client_ip, gai_strerror(err));
+ error("Incoming %s on '%s' does not match a numeric pattern, and host could not be resolved (err=%s)",
+ patname, client_ip, gai_strerror(err));
if (hostsize >= 8)
strcpy(client_host,"UNKNOWN");
return 0;
@@ -1074,9 +1077,8 @@ extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t
// --------------------------------------------------------------------------------------------------------------------
// accept_socket() - accept a socket and store client IP and port
-
int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *client_port, size_t portsize,
- char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list) {
+ char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list, int allow_dns) {
struct sockaddr_storage sadr;
socklen_t addrlen = sizeof(sadr);
@@ -1088,7 +1090,7 @@ int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *clien
strncpyz(client_ip, "UNKNOWN", ipsize - 1);
strncpyz(client_port, "UNKNOWN", portsize - 1);
}
- if(!strcmp(client_ip, "127.0.0.1") || !strcmp(client_ip, "::1")) {
+ if (!strcmp(client_ip, "127.0.0.1") || !strcmp(client_ip, "::1")) {
strncpy(client_ip, "localhost", ipsize);
client_ip[ipsize - 1] = '\0';
}
@@ -1126,7 +1128,7 @@ int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *clien
debug(D_LISTENER, "New UNKNOWN web client from %s port %s on socket %d.", client_ip, client_port, fd);
break;
}
- if(!connection_allowed(nfd, client_ip, client_host, hostsize, access_list, "connection")) {
+ if (!connection_allowed(nfd, client_ip, client_host, hostsize, access_list, "connection", allow_dns)) {
errno = 0;
error("Permission denied for client '%s', port '%s'", client_ip, client_port);
close(nfd);
@@ -1135,7 +1137,7 @@ int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *clien
}
}
#ifdef HAVE_ACCEPT4
- else if(errno == ENOSYS)
+ else if (errno == ENOSYS)
error("netdata has been compiled with the assumption that the system has the accept4() call, but it is not here. Recompile netdata like this: ./configure --disable-accept4 ...");
#endif
@@ -1444,7 +1446,7 @@ static void poll_events_process(POLLJOB *p, POLLINFO *pi, struct pollfd *pf, sho
debug(D_POLLFD, "POLLFD: LISTENER: calling accept4() slot %zu (fd %d)", i, fd);
nfd = accept_socket(fd, SOCK_NONBLOCK, client_ip, INET6_ADDRSTRLEN, client_port, NI_MAXSERV,
- client_host, NI_MAXHOST, p->access_list);
+ client_host, NI_MAXHOST, p->access_list, p->allow_dns);
if (unlikely(nfd < 0)) {
// accept failed
@@ -1562,6 +1564,7 @@ void poll_events(LISTEN_SOCKETS *sockets
, int (*snd_callback)(POLLINFO * /*pi*/, short int * /*events*/)
, void (*tmr_callback)(void * /*timer_data*/)
, SIMPLE_PATTERN *access_list
+ , int allow_dns
, void *data
, time_t tcp_request_timeout_seconds
, time_t tcp_idle_timeout_seconds
@@ -1592,6 +1595,7 @@ void poll_events(LISTEN_SOCKETS *sockets
.checks_every = (tcp_idle_timeout_seconds / 3) + 1,
.access_list = access_list,
+ .allow_dns = allow_dns,
.timer_milliseconds = timer_milliseconds,
.timer_data = timer_data,
diff --git a/libnetdata/socket/socket.h b/libnetdata/socket/socket.h
index 227f05434..eb09b3f9a 100644
--- a/libnetdata/socket/socket.h
+++ b/libnetdata/socket/socket.h
@@ -73,9 +73,9 @@ extern int sock_enlarge_in(int fd);
extern int sock_enlarge_out(int fd);
extern int connection_allowed(int fd, char *client_ip, char *client_host, size_t hostsize,
- SIMPLE_PATTERN *access_list, const char *patname);
+ SIMPLE_PATTERN *access_list, const char *patname, int allow_dns);
extern int accept_socket(int fd, int flags, char *client_ip, size_t ipsize, char *client_port, size_t portsize,
- char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list);
+ char *client_host, size_t hostsize, SIMPLE_PATTERN *access_list, int allow_dns);
#ifndef HAVE_ACCEPT4
extern int accept4(int sock, struct sockaddr *addr, socklen_t *addrlen, int flags);
@@ -155,6 +155,7 @@ struct poll {
struct pollinfo *first_free;
SIMPLE_PATTERN *access_list;
+ int allow_dns;
void *(*add_callback)(POLLINFO *pi, short int *events, void *data);
void (*del_callback)(POLLINFO *pi);
@@ -193,6 +194,7 @@ extern void poll_events(LISTEN_SOCKETS *sockets
, int (*snd_callback)(POLLINFO *pi, short int *events)
, void (*tmr_callback)(void *timer_data)
, SIMPLE_PATTERN *access_list
+ , int allow_dns
, void *data
, time_t tcp_request_timeout_seconds
, time_t tcp_idle_timeout_seconds