diff options
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/configure.in | 2 | ||||
| -rw-r--r-- | erts/doc/src/epmd.xml | 2 | ||||
| -rw-r--r-- | erts/doc/src/erl.xml | 22 | ||||
| -rw-r--r-- | erts/epmd/src/epmd.c | 2 | ||||
| -rw-r--r-- | erts/epmd/src/epmd_cli.c | 30 | ||||
| -rw-r--r-- | erts/epmd/src/epmd_int.h | 63 | ||||
| -rw-r--r-- | erts/epmd/src/epmd_srv.c | 201 | ||||
| -rw-r--r-- | erts/epmd/test/epmd_SUITE.erl | 33 |
8 files changed, 262 insertions, 93 deletions
diff --git a/erts/configure.in b/erts/configure.in index ba735fe921..a8d6015aee 100644 --- a/erts/configure.in +++ b/erts/configure.in @@ -474,7 +474,7 @@ case $host_os in win32) # The ethread library requires _WIN32_WINNT of at least 0x0403. # -D_WIN32_WINNT=* from CPPFLAGS is saved in ETHR_DEFS. - CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0501 -DWINVER=0x0501" + CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0600 -DWINVER=0x0600" ;; darwin*) CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE" diff --git a/erts/doc/src/epmd.xml b/erts/doc/src/epmd.xml index 28fcc8f7af..7f61804bea 100644 --- a/erts/doc/src/epmd.xml +++ b/erts/doc/src/epmd.xml @@ -37,7 +37,7 @@ <comsummary> <p>Erlang Port Mapper Daemon</p> <taglist> - <tag><c><![CDATA[epmd [-d|-debug] [DbgExtra...] [-port No] [-daemon] [-relaxed_command_check]]]></c></tag> + <tag><c><![CDATA[epmd [-d|-debug] [DbgExtra...] [-address Addresses] [-port No] [-daemon] [-relaxed_command_check]]]></c></tag> <item> <p>Starts the port mapper daemon</p> </item> diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index 1c4a0056a7..096af096dc 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -387,6 +387,28 @@ <p>Replaces the path specified in the boot script. See <seealso marker="sasl:script">script(4)</seealso>.</p> </item> + <tag><c><![CDATA[-proto_dist Proto]]></c></tag> + <item> + <p>Specify a protocol for Erlang distribution.</p> + <taglist> + <tag><c>inet_tcp</c></tag> + <item> + <p>TCP over IPv4 (the default)</p> + </item> + <tag><c>inet_tls</c></tag> + <item> + <p>distribution over TLS/SSL</p> + </item> + <tag><c>inet6_tcp</c></tag> + <item> + <p>TCP over IPv6</p> + </item> + </taglist> + <p>For example, to start up IPv6 distributed nodes:</p> +<pre> +% <input>erl -name [email protected] -proto_dist inet6_tcp</input> +</pre> + </item> <tag><c><![CDATA[-remsh Node]]></c></tag> <item> <p>Starts Erlang with a remote shell connected to <c><![CDATA[Node]]></c>.</p> diff --git a/erts/epmd/src/epmd.c b/erts/epmd/src/epmd.c index 21ce4e52b0..324ae6ac40 100644 --- a/erts/epmd/src/epmd.c +++ b/erts/epmd/src/epmd.c @@ -343,7 +343,7 @@ static void run_daemon(EpmdVars *g) for (fd = 0; fd < g->max_conn ; fd++) /* close all files ... */ close(fd); /* Syslog on linux will try to write to whatever if we dont - inform it of that the log is closed. */ + inform it that the log is closed. */ closelog(); /* These shouldn't be needed but for safety... */ diff --git a/erts/epmd/src/epmd_cli.c b/erts/epmd/src/epmd_cli.c index a8fe865d9a..6fc05e153e 100644 --- a/erts/epmd/src/epmd_cli.c +++ b/erts/epmd/src/epmd_cli.c @@ -136,19 +136,33 @@ void epmd_call(EpmdVars *g,int what) static int conn_to_epmd(EpmdVars *g) { struct EPMD_SOCKADDR_IN address; + size_t salen = 0; int connect_sock; - - connect_sock = socket(FAMILY, SOCK_STREAM, 0); - if (connect_sock<0) - goto error; + unsigned short sport = g->port; + +#if defined(EPMD6) + SET_ADDR6(address, in6addr_loopback, sport); + salen = sizeof(struct sockaddr_in6); + + connect_sock = socket(AF_INET6, SOCK_STREAM, 0); + if (connect_sock>=0) { + + if (connect(connect_sock, (struct sockaddr*)&address, salen) == 0) + return connect_sock; - { /* store port number in unsigned short */ - unsigned short sport = g->port; - SET_ADDR(address, EPMD_ADDR_LOOPBACK, sport); + close(connect_sock); } +#endif + SET_ADDR(address, htonl(INADDR_LOOPBACK), sport); + salen = sizeof(struct sockaddr_in); - if (connect(connect_sock, (struct sockaddr*)&address, sizeof address) < 0) + connect_sock = socket(AF_INET, SOCK_STREAM, 0); + if (connect_sock<0) goto error; + + if (connect(connect_sock, (struct sockaddr*)&address, salen) < 0) + goto error; + return connect_sock; error: diff --git a/erts/epmd/src/epmd_int.h b/erts/epmd/src/epmd_int.h index e222abb4b7..e127eff097 100644 --- a/erts/epmd/src/epmd_int.h +++ b/erts/epmd/src/epmd_int.h @@ -48,6 +48,7 @@ # ifndef WINDOWS_H_INCLUDES_WINSOCK2_H # include <winsock2.h> # endif +# include <ws2tcpip.h> # include <windows.h> # include <process.h> #endif @@ -114,6 +115,10 @@ # include <systemd/sd-daemon.h> #endif /* HAVE_SYSTEMD_DAEMON */ +#if defined(HAVE_IN6) && defined(AF_INET6) && defined(HAVE_INET_PTON) +# define EPMD6 +#endif + /* ************************************************************************ */ /* Replace some functions by others by making the function name a macro */ @@ -167,33 +172,53 @@ /* ************************************************************************ */ /* Macros that let us use IPv6 */ -#if defined(HAVE_IN6) && defined(AF_INET6) && defined(EPMD6) +#if HAVE_IN6 +# if ! defined(HAVE_IN6ADDR_ANY) || ! HAVE_IN6ADDR_ANY +# if HAVE_DECL_IN6ADDR_ANY_INIT +static const struct in6_addr in6addr_any = { { IN6ADDR_ANY_INIT } }; +# else +static const struct in6_addr in6addr_any = + { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }; +# endif /* HAVE_IN6ADDR_ANY_INIT */ +# endif /* ! HAVE_DECL_IN6ADDR_ANY */ + +# if ! defined(HAVE_IN6ADDR_LOOPBACK) || ! HAVE_IN6ADDR_LOOPBACK +# if HAVE_DECL_IN6ADDR_LOOPBACK_INIT +static const struct in6_addr in6addr_loopback = + { { IN6ADDR_LOOPBACK_INIT } }; +# else +static const struct in6_addr in6addr_loopback = + { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }; +# endif /* HAVE_IN6ADDR_LOOPBACK_INIT */ +# endif /* ! HAVE_DECL_IN6ADDR_LOOPBACK */ +#endif /* HAVE_IN6 */ + +#define IS_ADDR_LOOPBACK(addr) ((addr).s_addr == htonl(INADDR_LOOPBACK)) + +#if defined(EPMD6) -#define EPMD_SOCKADDR_IN sockaddr_in6 -#define EPMD_IN_ADDR in6_addr -#define EPMD_S_ADDR s6_addr -#define EPMD_ADDR_LOOPBACK in6addr_loopback.s6_addr -#define EPMD_ADDR_ANY in6addr_any.s6_addr +#define EPMD_SOCKADDR_IN sockaddr_storage #define FAMILY AF_INET6 -#define SET_ADDR(dst, addr, port) do { \ - memset((char*)&(dst), 0, sizeof(dst)); \ - memcpy((char*)&(dst).sin6_addr.s6_addr, (char*)&(addr), 16); \ - (dst).sin6_family = AF_INET6; \ - (dst).sin6_flowinfo = 0; \ - (dst).sin6_port = htons(port); \ +#define SET_ADDR6(dst, addr, port) do { \ + struct sockaddr_in6 *sa = (struct sockaddr_in6 *)&(dst); \ + memset(sa, 0, sizeof(dst)); \ + sa->sin6_family = AF_INET6; \ + sa->sin6_addr = (addr); \ + sa->sin6_port = htons(port); \ } while(0) -#define IS_ADDR_LOOPBACK(addr) \ - (memcmp((addr).s6_addr, in6addr_loopback.s6_addr, 16) == 0) +#define SET_ADDR(dst, addr, port) do { \ + struct sockaddr_in *sa = (struct sockaddr_in *)&(dst); \ + memset(sa, 0, sizeof(dst)); \ + sa->sin_family = AF_INET; \ + sa->sin_addr.s_addr = (addr); \ + sa->sin_port = htons(port); \ + } while(0) #else /* Not IP v6 */ #define EPMD_SOCKADDR_IN sockaddr_in -#define EPMD_IN_ADDR in_addr -#define EPMD_S_ADDR s_addr -#define EPMD_ADDR_LOOPBACK htonl(INADDR_LOOPBACK) -#define EPMD_ADDR_ANY htonl(INADDR_ANY) #define FAMILY AF_INET #define SET_ADDR(dst, addr, port) do { \ @@ -203,8 +228,6 @@ (dst).sin_port = htons(port); \ } while(0) -#define IS_ADDR_LOOPBACK(addr) ((addr).s_addr == htonl(INADDR_LOOPBACK)) - #endif /* Not IP v6 */ /* ************************************************************************ */ diff --git a/erts/epmd/src/epmd_srv.c b/erts/epmd/src/epmd_srv.c index fb8cae05df..84a2e0a3ea 100644 --- a/erts/epmd/src/epmd_srv.c +++ b/erts/epmd/src/epmd_srv.c @@ -71,6 +71,7 @@ static time_t current_time(EpmdVars*); static Connection *conn_init(EpmdVars*); static int conn_open(EpmdVars*,int); +static int conn_local_peer_check(EpmdVars*, int); static int conn_close_fd(EpmdVars*,int); static void node_init(EpmdVars*); @@ -201,10 +202,11 @@ void run(EpmdVars *g) { struct EPMD_SOCKADDR_IN iserv_addr[MAX_LISTEN_SOCKETS]; int listensock[MAX_LISTEN_SOCKETS]; - int num_sockets; + int num_sockets = 0; int i; int opt; unsigned short sport = g->port; + int bound = 0; node_init(g); g->conn = conn_init(g); @@ -247,64 +249,82 @@ void run(EpmdVars *g) if (g->addresses != NULL && /* String contains non-separator characters if: */ g->addresses[strspn(g->addresses," ,")] != '\000') { - char *tmp; - char *token; - int loopback_ok = 0; + char *tmp = NULL; + char *token = NULL; + + /* Always listen on the loopback. */ + SET_ADDR(iserv_addr[num_sockets],htonl(INADDR_LOOPBACK),sport); + num_sockets++; +#if defined(EPMD6) + SET_ADDR6(iserv_addr[num_sockets],in6addr_loopback,sport); + num_sockets++; +#endif - if ((tmp = (char *)malloc(strlen(g->addresses) + 1)) == NULL) + if ((tmp = strdup(g->addresses)) == NULL) { dbg_perror(g,"cannot allocate memory"); epmd_cleanup_exit(g,1); } - strcpy(tmp,g->addresses); - for(token = strtok(tmp,", "), num_sockets = 0; + for(token = strtok(tmp,", "); token != NULL; - token = strtok(NULL,", "), num_sockets++) + token = strtok(NULL,", ")) { - struct EPMD_IN_ADDR addr; -#ifdef HAVE_INET_PTON - int ret; + struct in_addr addr; +#if defined(EPMD6) + struct in6_addr addr6; + struct sockaddr_storage *sa = &iserv_addr[num_sockets]; - if ((ret = inet_pton(FAMILY,token,&addr)) == -1) + if (inet_pton(AF_INET6,token,&addr6) == 1) { - dbg_perror(g,"cannot convert IP address to network format"); - epmd_cleanup_exit(g,1); + SET_ADDR6(iserv_addr[num_sockets],addr6,sport); + } + else if (inet_pton(AF_INET,token,&addr) == 1) + { + SET_ADDR(iserv_addr[num_sockets],addr.s_addr,sport); + } + else +#else + if ((addr.s_addr = inet_addr(token)) != INADDR_NONE) + { + SET_ADDR(iserv_addr[num_sockets],addr.s_addr,sport); } - else if (ret == 0) -#elif !defined(EPMD6) - if ((addr.EPMD_S_ADDR = inet_addr(token)) == INADDR_NONE) + else #endif { dbg_tty_printf(g,0,"cannot parse IP address \"%s\"",token); epmd_cleanup_exit(g,1); } +#if defined(EPMD6) + if (sa->ss_family == AF_INET6 && IN6_IS_ADDR_LOOPBACK(&addr6)) + continue; + + if (sa->ss_family == AF_INET) +#endif if (IS_ADDR_LOOPBACK(addr)) - loopback_ok = 1; + continue; + + num_sockets++; - if (num_sockets - loopback_ok == MAX_LISTEN_SOCKETS - 1) + if (num_sockets >= MAX_LISTEN_SOCKETS) { dbg_tty_printf(g,0,"cannot listen on more than %d IP addresses", MAX_LISTEN_SOCKETS); epmd_cleanup_exit(g,1); } - - SET_ADDR(iserv_addr[num_sockets],addr.EPMD_S_ADDR,sport); } free(tmp); - - if (!loopback_ok) - { - SET_ADDR(iserv_addr[num_sockets],EPMD_ADDR_LOOPBACK,sport); - num_sockets++; - } } else { - SET_ADDR(iserv_addr[0],EPMD_ADDR_ANY,sport); - num_sockets = 1; + SET_ADDR(iserv_addr[num_sockets],htonl(INADDR_ANY),sport); + num_sockets++; +#if defined(EPMD6) + SET_ADDR6(iserv_addr[num_sockets],in6addr_any,sport); + num_sockets++; +#endif } #ifdef HAVE_SYSTEMD_DAEMON } @@ -335,13 +355,39 @@ void run(EpmdVars *g) #endif /* HAVE_SYSTEMD_DAEMON */ for (i = 0; i < num_sockets; i++) { - if ((listensock[i] = socket(FAMILY,SOCK_STREAM,0)) < 0) + struct sockaddr *sa = (struct sockaddr *)&iserv_addr[i]; +#if defined(EPMD6) + size_t salen = (sa->sa_family == AF_INET6 ? + sizeof(struct sockaddr_in6) : + sizeof(struct sockaddr_in)); +#else + size_t salen = sizeof(struct sockaddr_in); +#endif + + if ((listensock[i] = socket(sa->sa_family,SOCK_STREAM,0)) < 0) { - dbg_perror(g,"error opening stream socket"); - epmd_cleanup_exit(g,1); + switch (errno) { + case EAFNOSUPPORT: + case EPROTONOSUPPORT: + continue; + default: + dbg_perror(g,"error opening stream socket"); + epmd_cleanup_exit(g,1); + } } g->listenfd[i] = listensock[i]; - + +#if HAVE_DECL_IPV6_V6ONLY + opt = 1; + if (sa->sa_family == AF_INET6 && + setsockopt(listensock[i],IPPROTO_IPV6,IPV6_V6ONLY,&opt, + sizeof(opt)) <0) + { + dbg_perror(g,"can't set IPv6 only socket option"); + epmd_cleanup_exit(g,1); + } +#endif + /* * Note that we must not enable the SO_REUSEADDR on Windows, * because addresses will be reused even if they are still in use. @@ -373,8 +419,7 @@ void run(EpmdVars *g) dbg_perror(g,"failed to set non-blocking mode of listening socket %d", listensock[i]); - if (bind(listensock[i], (struct sockaddr*) &iserv_addr[i], - sizeof(iserv_addr[i])) < 0) + if (bind(listensock[i], (struct sockaddr*) &iserv_addr[i], salen) < 0) { if (errno == EADDRINUSE) { @@ -389,12 +434,18 @@ void run(EpmdVars *g) } } + bound++; + if(listen(listensock[i], SOMAXCONN) < 0) { dbg_perror(g,"failed to listen on socket"); epmd_cleanup_exit(g,1); } select_fd_set(g, listensock[i]); } + if (bound == 0) { + dbg_perror(g,"unable to bind any address"); + epmd_cleanup_exit(g,1); + } #ifdef HAVE_SYSTEMD_DAEMON } sd_notifyf(0, "READY=1\n" @@ -1000,15 +1051,6 @@ static int conn_open(EpmdVars *g,int fd) for (i = 0; i < g->max_conn; i++) { if (g->conn[i].open == EPMD_FALSE) { - struct sockaddr_in si; - struct sockaddr_in di; -#ifdef HAVE_SOCKLEN_T - socklen_t st; -#else - int st; -#endif - st = sizeof(si); - g->active_conn++; s = &g->conn[i]; @@ -1019,20 +1061,7 @@ static int conn_open(EpmdVars *g,int fd) s->open = EPMD_TRUE; s->keep = EPMD_FALSE; - /* Determine if connection is from localhost */ - if (getpeername(s->fd,(struct sockaddr*) &si,&st) || - st < sizeof(si)) { - /* Failure to get peername is regarded as non local host */ - s->local_peer = EPMD_FALSE; - } else { - /* Only 127.x.x.x and connections from the host's IP address - allowed, no false positives */ - s->local_peer = - (((((unsigned) ntohl(si.sin_addr.s_addr)) & 0xFF000000U) == - 0x7F000000U) || - (getsockname(s->fd,(struct sockaddr*) &di,&st) ? - EPMD_FALSE : si.sin_addr.s_addr == di.sin_addr.s_addr)); - } + s->local_peer = conn_local_peer_check(g, s->fd); dbg_tty_printf(g,2,(s->local_peer) ? "Local peer connected" : "Non-local peer connected"); @@ -1040,7 +1069,7 @@ static int conn_open(EpmdVars *g,int fd) s->got = 0; s->mod_time = current_time(g); /* Note activity */ - s->buf = (char *)malloc(INBUF_SIZE); + s->buf = malloc(INBUF_SIZE); if (s->buf == NULL) { dbg_printf(g,0,"epmd: Insufficient memory"); @@ -1058,6 +1087,60 @@ static int conn_open(EpmdVars *g,int fd) return EPMD_FALSE; } +static int conn_local_peer_check(EpmdVars *g, int fd) +{ + struct EPMD_SOCKADDR_IN si; + struct EPMD_SOCKADDR_IN di; + + struct sockaddr_in *si4 = (struct sockaddr_in *)&si; + struct sockaddr_in *di4 = (struct sockaddr_in *)&di; + +#if defined(EPMD6) + struct sockaddr_in6 *si6 = (struct sockaddr_in6 *)&si; + struct sockaddr_in6 *di6 = (struct sockaddr_in6 *)&di; +#endif + +#ifdef HAVE_SOCKLEN_T + socklen_t st; +#else + int st; +#endif + + st = sizeof(si); + + /* Determine if connection is from localhost */ + if (getpeername(fd,(struct sockaddr*) &si,&st) || + st > sizeof(si)) { + /* Failure to get peername is regarded as non local host */ + return EPMD_FALSE; + } + + /* Only 127.x.x.x and connections from the host's IP address + allowed, no false positives */ +#if defined(EPMD6) + if (si.ss_family == AF_INET6 && IN6_IS_ADDR_LOOPBACK(&(si6->sin6_addr))) + return EPMD_TRUE; + + if (si.ss_family == AF_INET) +#endif + if ((((unsigned) ntohl(si4->sin_addr.s_addr)) & 0xFF000000U) == + 0x7F000000U) + return EPMD_TRUE; + + if (getsockname(fd,(struct sockaddr*) &di,&st)) + return EPMD_FALSE; + +#if defined(EPMD6) + if (si.ss_family == AF_INET6) + return IN6_ARE_ADDR_EQUAL( &(si6->sin6_addr), &(di6->sin6_addr)); + if (si.ss_family == AF_INET) +#endif + return si4->sin_addr.s_addr == di4->sin_addr.s_addr; +#if defined(EPMD6) + return EPMD_FALSE; +#endif +} + static int conn_close_fd(EpmdVars *g,int fd) { int i; diff --git a/erts/epmd/test/epmd_SUITE.erl b/erts/epmd/test/epmd_SUITE.erl index 0c8f01ef6b..44d3c5a880 100644 --- a/erts/epmd/test/epmd_SUITE.erl +++ b/erts/epmd/test/epmd_SUITE.erl @@ -43,6 +43,7 @@ -export( [ register_name/1, + register_name_ipv6/1, register_names_1/1, register_names_2/1, register_duplicate_name/1, @@ -113,7 +114,8 @@ suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> - [register_name, register_names_1, register_names_2, + [register_name, register_name_ipv6, + register_names_1, register_names_2, register_duplicate_name, unicode_name, long_unicode_name, get_port_nr, slow_get_port_nr, unregister_others_name_1, unregister_others_name_2, @@ -172,6 +174,24 @@ register_name(Config) when is_list(Config) -> ?line ok = close(Sock), % Unregister ok. +register_name_ipv6(doc) -> + ["Register a name over IPv6"]; +register_name_ipv6(suite) -> + []; +register_name_ipv6(Config) when is_list(Config) -> + % Test if the host has an IPv6 loopback address + Res = gen_tcp:listen(0, [inet6, {ip, {0,0,0,0,0,0,0,1}}]), + case Res of + {ok,LSock} -> + gen_tcp:close(LSock), + ?line ok = epmdrun(), + ?line {ok,Sock} = register_node6("foobar6"), + ?line ok = close(Sock), % Unregister + ok; + _Error -> + {skip, "Host does not have an IPv6 loopback address"} + end. + register_names_1(doc) -> ["Register and unregister two nodes"]; register_names_1(suite) -> @@ -245,9 +265,14 @@ register_node(Name) -> register_node(Name,Port) -> register_node_v2(Port,$M,0,5,5,Name,""). +register_node6(Name) -> + register_node_v2({0,0,0,0,0,0,0,1},?DUMMY_PORT,$M,0,5,5,Name,""). + register_node_v2(Port, NodeType, Prot, HVsn, LVsn, Name, Extra) -> + register_node_v2("localhost", Port, NodeType, Prot, HVsn, LVsn, Name, Extra). +register_node_v2(Addr, Port, NodeType, Prot, HVsn, LVsn, Name, Extra) -> Req = alive2_req(Port, NodeType, Prot, HVsn, LVsn, Name, Extra), - case send_req(Req) of + case send_req(Req, Addr) of {ok,Sock} -> case recv(Sock,4) of {ok, [?EPMD_ALIVE2_RESP,_Res=0,_C0,_C1]} -> @@ -1186,7 +1211,9 @@ send_direct(Sock, Bytes) -> end. send_req(Req) -> - case connect() of + send_req(Req, "localhost"). +send_req(Req, Addr) -> + case connect(Addr) of {ok,Sock} -> case send(Sock, [size16(Req), Req]) of ok -> |