From 97cbab78dcc43f696077d3bbce1ee35f9d947339 Mon Sep 17 00:00:00 2001 From: akr Date: Sat, 17 Jan 2009 04:11:27 +0000 Subject: * ext/socket: split files for each class. * ext/socket/rubysocket.h: common header. * ext/socket/basicsocket.c: new file for BasicSocket. * ext/socket/ipsocket.c: new file for IPSocket. * ext/socket/tcpsocket.c: new file for TCPSocket. * ext/socket/tcpserver.c: new file for TCPServer. * ext/socket/sockssocket.c: new file for SOCKSSocket. * ext/socket/udpsocket.c: new file for UDPSocket. * ext/socket/unixsocket.c: new file for UNIXSocket. * ext/socket/unixserver.c: new file for UNIXServer. * ext/socket/socket.c: now for Socket. * ext/socket/raddrinfo.c: new file for AddrInfo and name resolution. * ext/socket/constants.c: new file for constants. * ext/socket/init.c: new file for utilities. * ext/socket/mkconstants.rb: export *_to_int. * ext/socket/extconf.rb: add new object files. * ext/socket/depend: add dependencies for new files. * ext/.document: add new files. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21619 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/socket/unixsocket.c | 499 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 499 insertions(+) create mode 100644 ext/socket/unixsocket.c (limited to 'ext/socket/unixsocket.c') diff --git a/ext/socket/unixsocket.c b/ext/socket/unixsocket.c new file mode 100644 index 0000000000..7039a8219b --- /dev/null +++ b/ext/socket/unixsocket.c @@ -0,0 +1,499 @@ +/************************************************ + + unixsocket.c - + + created at: Thu Mar 31 12:21:29 JST 1994 + + Copyright (C) 1993-2007 Yukihiro Matsumoto + +************************************************/ + +#include "rubysocket.h" + +#ifdef HAVE_SYS_UN_H +struct unixsock_arg { + struct sockaddr_un *sockaddr; + int fd; +}; + +static VALUE +unixsock_connect_internal(struct unixsock_arg *arg) +{ + return (VALUE)ruby_connect(arg->fd, (struct sockaddr*)arg->sockaddr, + sizeof(*arg->sockaddr), 0); +} + +VALUE +init_unixsock(VALUE sock, VALUE path, int server) +{ + struct sockaddr_un sockaddr; + int fd, status; + rb_io_t *fptr; + + SafeStringValue(path); + fd = ruby_socket(AF_UNIX, SOCK_STREAM, 0); + if (fd < 0) { + rb_sys_fail("socket(2)"); + } + + MEMZERO(&sockaddr, struct sockaddr_un, 1); + sockaddr.sun_family = AF_UNIX; + if (sizeof(sockaddr.sun_path) <= RSTRING_LEN(path)) { + rb_raise(rb_eArgError, "too long unix socket path (max: %dbytes)", + (int)sizeof(sockaddr.sun_path)-1); + } + memcpy(sockaddr.sun_path, RSTRING_PTR(path), RSTRING_LEN(path)); + + if (server) { + status = bind(fd, (struct sockaddr*)&sockaddr, sizeof(sockaddr)); + } + else { + int prot; + struct unixsock_arg arg; + arg.sockaddr = &sockaddr; + arg.fd = fd; + status = rb_protect((VALUE(*)(VALUE))unixsock_connect_internal, + (VALUE)&arg, &prot); + if (prot) { + close(fd); + rb_jump_tag(prot); + } + } + + if (status < 0) { + close(fd); + rb_sys_fail(sockaddr.sun_path); + } + + if (server) listen(fd, 5); + + init_sock(sock, fd); + if (server) { + GetOpenFile(sock, fptr); + fptr->pathv = rb_str_new_frozen(path); + } + + return sock; +} +#endif + +#ifdef HAVE_SYS_UN_H +/* + * call-seq: + * UNIXSocket.new(path) => unixsocket + * + * Creates a new UNIX client socket connected to _path_. + * + * s = UNIXSocket.new("/tmp/sock") + * s.send "hello", 0 + * + */ +static VALUE +unix_init(VALUE sock, VALUE path) +{ + return init_unixsock(sock, path, 0); +} + +/* + * call-seq: + * unixsocket.path => path + * + * Returns the path of the local address of unixsocket. + * + * s = UNIXServer.new("/tmp/sock") + * p s.path #=> "/tmp/sock" + * + */ +static VALUE +unix_path(VALUE sock) +{ + rb_io_t *fptr; + + GetOpenFile(sock, fptr); + if (NIL_P(fptr->pathv)) { + struct sockaddr_un addr; + socklen_t len = sizeof(addr); + if (getsockname(fptr->fd, (struct sockaddr*)&addr, &len) < 0) + rb_sys_fail(0); + fptr->pathv = rb_obj_freeze(rb_str_new_cstr(unixpath(&addr, len))); + } + return rb_str_dup(fptr->pathv); +} + +/* + * call-seq: + * unixsocket.recvfrom(maxlen [, flags]) => [mesg, unixaddress] + * + * Receives a message via _unixsocket_. + * + * _maxlen_ is the maximum number of bytes to receive. + * + * _flags_ should be a bitwise OR of Socket::MSG_* constants. + * + * s1 = Socket.new(:UNIX, :DGRAM, 0) + * s1_ai = AddrInfo.unix("/tmp/sock1") + * s1.bind(s1_ai) + * + * s2 = Socket.new(:UNIX, :DGRAM, 0) + * s2_ai = AddrInfo.unix("/tmp/sock2") + * s2.bind(s2_ai) + * s3 = UNIXSocket.for_fd(s2.fileno) + * + * s1.send "a", 0, s2_ai + * p s3.recvfrom(10) #=> ["a", ["AF_UNIX", "/tmp/sock1"]] + * + */ +static VALUE +unix_recvfrom(int argc, VALUE *argv, VALUE sock) +{ + return s_recvfrom(sock, argc, argv, RECV_UNIX); +} + +#if defined(HAVE_ST_MSG_CONTROL) && defined(SCM_RIGHTS) +#define FD_PASSING_BY_MSG_CONTROL 1 +#else +#define FD_PASSING_BY_MSG_CONTROL 0 +#endif + +#if defined(HAVE_ST_MSG_ACCRIGHTS) +#define FD_PASSING_BY_MSG_ACCRIGHTS 1 +#else +#define FD_PASSING_BY_MSG_ACCRIGHTS 0 +#endif + +struct iomsg_arg { + int fd; + struct msghdr msg; +}; + +static VALUE +sendmsg_blocking(void *data) +{ + struct iomsg_arg *arg = data; + return sendmsg(arg->fd, &arg->msg, 0); +} + +/* + * call-seq: + * unixsocket.send_io(io) => nil + * + * Sends _io_ as file descriptor passing. + * + * s1, s2 = UNIXSocket.pair + * + * s1.send_io STDOUT + * stdout = s2.recv_io + * + * p STDOUT.fileno #=> 1 + * p stdout.fileno #=> 6 + * + * stdout.puts "hello" # outputs "hello\n" to standard output. + */ +static VALUE +unix_send_io(VALUE sock, VALUE val) +{ +#if defined(HAVE_SENDMSG) && (FD_PASSING_BY_MSG_CONTROL || FD_PASSING_BY_MSG_ACCRIGHTS) + int fd; + rb_io_t *fptr; + struct iomsg_arg arg; + struct iovec vec[1]; + char buf[1]; + +#if FD_PASSING_BY_MSG_CONTROL + struct { + struct cmsghdr hdr; + char pad[8+sizeof(int)+8]; + } cmsg; +#endif + + if (rb_obj_is_kind_of(val, rb_cIO)) { + rb_io_t *valfptr; + GetOpenFile(val, valfptr); + fd = valfptr->fd; + } + else if (FIXNUM_P(val)) { + fd = FIX2INT(val); + } + else { + rb_raise(rb_eTypeError, "neither IO nor file descriptor"); + } + + GetOpenFile(sock, fptr); + + arg.msg.msg_name = NULL; + arg.msg.msg_namelen = 0; + + /* Linux and Solaris doesn't work if msg_iov is NULL. */ + buf[0] = '\0'; + vec[0].iov_base = buf; + vec[0].iov_len = 1; + arg.msg.msg_iov = vec; + arg.msg.msg_iovlen = 1; + +#if FD_PASSING_BY_MSG_CONTROL + arg.msg.msg_control = (caddr_t)&cmsg; + arg.msg.msg_controllen = CMSG_LEN(sizeof(int)); + arg.msg.msg_flags = 0; + MEMZERO((char*)&cmsg, char, sizeof(cmsg)); + cmsg.hdr.cmsg_len = CMSG_LEN(sizeof(int)); + cmsg.hdr.cmsg_level = SOL_SOCKET; + cmsg.hdr.cmsg_type = SCM_RIGHTS; + *(int *)CMSG_DATA(&cmsg.hdr) = fd; +#else + arg.msg.msg_accrights = (caddr_t)&fd; + arg.msg.msg_accrightslen = sizeof(fd); +#endif + + arg.fd = fptr->fd; + rb_thread_fd_writable(arg.fd); + if ((int)BLOCKING_REGION(sendmsg_blocking, &arg) == -1) + rb_sys_fail("sendmsg(2)"); + + return Qnil; +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +static VALUE +recvmsg_blocking(void *data) +{ + struct iomsg_arg *arg = data; + return recvmsg(arg->fd, &arg->msg, 0); +} + +/* + * call-seq: + * unixsocket.recv_io([klass [, mode]]) => io + * + * UNIXServer.open("/tmp/sock") {|serv| + * UNIXSocket.open("/tmp/sock") {|c| + * s = serv.accept + * + * c.send_io STDOUT + * stdout = s.recv_io + * + * p STDOUT.fileno #=> 1 + * p stdout.fileno #=> 7 + * + * stdout.puts "hello" # outputs "hello\n" to standard output. + * } + * } + * + */ +static VALUE +unix_recv_io(int argc, VALUE *argv, VALUE sock) +{ +#if defined(HAVE_RECVMSG) && (FD_PASSING_BY_MSG_CONTROL || FD_PASSING_BY_MSG_ACCRIGHTS) + VALUE klass, mode; + rb_io_t *fptr; + struct iomsg_arg arg; + struct iovec vec[2]; + char buf[1]; + + int fd; +#if FD_PASSING_BY_MSG_CONTROL + struct { + struct cmsghdr hdr; + char pad[8+sizeof(int)+8]; + } cmsg; +#endif + + rb_scan_args(argc, argv, "02", &klass, &mode); + if (argc == 0) + klass = rb_cIO; + if (argc <= 1) + mode = Qnil; + + GetOpenFile(sock, fptr); + + arg.msg.msg_name = NULL; + arg.msg.msg_namelen = 0; + + vec[0].iov_base = buf; + vec[0].iov_len = sizeof(buf); + arg.msg.msg_iov = vec; + arg.msg.msg_iovlen = 1; + +#if FD_PASSING_BY_MSG_CONTROL + arg.msg.msg_control = (caddr_t)&cmsg; + arg.msg.msg_controllen = CMSG_SPACE(sizeof(int)); + arg.msg.msg_flags = 0; + cmsg.hdr.cmsg_len = CMSG_LEN(sizeof(int)); + cmsg.hdr.cmsg_level = SOL_SOCKET; + cmsg.hdr.cmsg_type = SCM_RIGHTS; + *(int *)CMSG_DATA(&cmsg.hdr) = -1; +#else + arg.msg.msg_accrights = (caddr_t)&fd; + arg.msg.msg_accrightslen = sizeof(fd); + fd = -1; +#endif + + arg.fd = fptr->fd; + rb_thread_wait_fd(arg.fd); + if ((int)BLOCKING_REGION(recvmsg_blocking, &arg) == -1) + rb_sys_fail("recvmsg(2)"); + +#if FD_PASSING_BY_MSG_CONTROL + if (arg.msg.msg_controllen < CMSG_LEN(sizeof(int))) { + rb_raise(rb_eSocket, + "file descriptor was not passed (msg_controllen=%d smaller than CMSG_LEN(sizeof(int))=%d)", + (int)arg.msg.msg_controllen, (int)CMSG_LEN(sizeof(int))); + } + if (CMSG_SPACE(sizeof(int)) < arg.msg.msg_controllen) { + rb_raise(rb_eSocket, + "file descriptor was not passed (msg_controllen=%d bigger than CMSG_SPACE(sizeof(int))=%d)", + (int)arg.msg.msg_controllen, (int)CMSG_SPACE(sizeof(int))); + } + if (cmsg.hdr.cmsg_len != CMSG_LEN(sizeof(int))) { + rb_raise(rb_eSocket, + "file descriptor was not passed (cmsg_len=%d, %d expected)", + (int)cmsg.hdr.cmsg_len, (int)CMSG_LEN(sizeof(int))); + } + if (cmsg.hdr.cmsg_level != SOL_SOCKET) { + rb_raise(rb_eSocket, + "file descriptor was not passed (cmsg_level=%d, %d expected)", + cmsg.hdr.cmsg_level, SOL_SOCKET); + } + if (cmsg.hdr.cmsg_type != SCM_RIGHTS) { + rb_raise(rb_eSocket, + "file descriptor was not passed (cmsg_type=%d, %d expected)", + cmsg.hdr.cmsg_type, SCM_RIGHTS); + } +#else + if (arg.msg.msg_accrightslen != sizeof(fd)) { + rb_raise(rb_eSocket, + "file descriptor was not passed (accrightslen) : %d != %d", + arg.msg.msg_accrightslen, (int)sizeof(fd)); + } +#endif + +#if FD_PASSING_BY_MSG_CONTROL + fd = *(int *)CMSG_DATA(&cmsg.hdr); +#endif + + if (klass == Qnil) + return INT2FIX(fd); + else { + ID for_fd; + int ff_argc; + VALUE ff_argv[2]; + CONST_ID(for_fd, "for_fd"); + ff_argc = mode == Qnil ? 1 : 2; + ff_argv[0] = INT2FIX(fd); + ff_argv[1] = mode; + return rb_funcall2(klass, for_fd, ff_argc, ff_argv); + } +#else + rb_notimplement(); + return Qnil; /* not reached */ +#endif +} + +/* + * call-seq: + * unixsocket.addr => [address_family, unix_path] + * + * Returns the local address as an array which contains + * address_family and unix_path. + * + * Example + * serv = UNIXServer.new("/tmp/sock") + * p serv.addr #=> ["AF_UNIX", "/tmp/sock"] + */ +static VALUE +unix_addr(VALUE sock) +{ + rb_io_t *fptr; + struct sockaddr_un addr; + socklen_t len = sizeof addr; + + GetOpenFile(sock, fptr); + + if (getsockname(fptr->fd, (struct sockaddr*)&addr, &len) < 0) + rb_sys_fail("getsockname(2)"); + return unixaddr(&addr, len); +} + +/* + * call-seq: + * unixsocket.peeraddr => [address_family, unix_path] + * + * Returns the remote address as an array which contains + * address_family and unix_path. + * + * Example + * serv = UNIXServer.new("/tmp/sock") + * c = UNIXSocket.new("/tmp/sock") + * p c.peeraddr #=> ["AF_UNIX", "/tmp/sock"] + */ +static VALUE +unix_peeraddr(VALUE sock) +{ + rb_io_t *fptr; + struct sockaddr_un addr; + socklen_t len = sizeof addr; + + GetOpenFile(sock, fptr); + + if (getpeername(fptr->fd, (struct sockaddr*)&addr, &len) < 0) + rb_sys_fail("getpeername(2)"); + return unixaddr(&addr, len); +} +#endif + +#ifdef HAVE_SYS_UN_H +/* + * call-seq: + * UNIXSocket.pair([type [, protocol]]) => [unixsocket1, unixsocket2] + * UNIXSocket.socketpair([type [, protocol]]) => [unixsocket1, unixsocket2] + * + * Creates a pair of sockets connected each other. + * + * _socktype_ should be a socket type such as: :STREAM, :DGRAM, :RAW, etc. + * + * _protocol_ should be a protocol defined in the domain. + * 0 is default protocol for the domain. + * + * s1, s2 = UNIXSocket.pair + * s1.send "a", 0 + * s1.send "b", 0 + * p s2.recv(10) #=> "ab" + * + */ +static VALUE +unix_s_socketpair(int argc, VALUE *argv, VALUE klass) +{ + VALUE domain, type, protocol; + domain = INT2FIX(PF_UNIX); + + rb_scan_args(argc, argv, "02", &type, &protocol); + if (argc == 0) + type = INT2FIX(SOCK_STREAM); + if (argc <= 1) + protocol = INT2FIX(0); + + return sock_s_socketpair(klass, domain, type, protocol); +} +#endif + +/* + * UNIXSocket class + */ +void +Init_unixsocket(void) +{ +#ifdef HAVE_SYS_UN_H + rb_cUNIXSocket = rb_define_class("UNIXSocket", rb_cBasicSocket); + rb_define_method(rb_cUNIXSocket, "initialize", unix_init, 1); + rb_define_method(rb_cUNIXSocket, "path", unix_path, 0); + rb_define_method(rb_cUNIXSocket, "addr", unix_addr, 0); + rb_define_method(rb_cUNIXSocket, "peeraddr", unix_peeraddr, 0); + rb_define_method(rb_cUNIXSocket, "recvfrom", unix_recvfrom, -1); + rb_define_method(rb_cUNIXSocket, "send_io", unix_send_io, 1); + rb_define_method(rb_cUNIXSocket, "recv_io", unix_recv_io, -1); + rb_define_singleton_method(rb_cUNIXSocket, "socketpair", unix_s_socketpair, -1); + rb_define_singleton_method(rb_cUNIXSocket, "pair", unix_s_socketpair, -1); +#endif +} -- cgit v1.2.3