diff options
Diffstat (limited to 'libnetdata/socket')
| -rw-r--r-- | libnetdata/socket/Makefile.am | 5 | ||||
| -rw-r--r-- | libnetdata/socket/Makefile.in | 519 | ||||
| -rw-r--r-- | libnetdata/socket/socket.c | 24 | ||||
| -rw-r--r-- | libnetdata/socket/socket.h | 6 |
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 @@ +# Makefile.in generated by automake 1.15.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2017 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent 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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 |