mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
91987f6b04
r36944. it breaks mswin/mingw ruby and brought into many many crashes. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
616 lines
14 KiB
C
616 lines
14 KiB
C
/************************************************
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init.c -
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created at: Thu Mar 31 12:21:29 JST 1994
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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************************************************/
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#include "rubysocket.h"
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VALUE rb_cBasicSocket;
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VALUE rb_cIPSocket;
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VALUE rb_cTCPSocket;
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VALUE rb_cTCPServer;
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VALUE rb_cUDPSocket;
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#ifdef AF_UNIX
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VALUE rb_cUNIXSocket;
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VALUE rb_cUNIXServer;
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#endif
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VALUE rb_cSocket;
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VALUE rb_cAddrinfo;
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VALUE rb_eSocket;
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#ifdef SOCKS
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VALUE rb_cSOCKSSocket;
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#endif
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int rsock_do_not_reverse_lookup = 1;
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void
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rsock_raise_socket_error(const char *reason, int error)
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{
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#ifdef EAI_SYSTEM
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if (error == EAI_SYSTEM) rb_sys_fail(reason);
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#endif
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rb_raise(rb_eSocket, "%s: %s", reason, gai_strerror(error));
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}
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VALUE
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rsock_init_sock(VALUE sock, int fd)
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{
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rb_io_t *fp;
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#ifndef _WIN32
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struct stat sbuf;
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if (fstat(fd, &sbuf) < 0)
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rb_sys_fail(0);
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rb_update_max_fd(fd);
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if (!S_ISSOCK(sbuf.st_mode))
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rb_raise(rb_eArgError, "not a socket file descriptor");
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#else
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rb_update_max_fd(fd);
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if (!rb_w32_is_socket(fd))
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rb_raise(rb_eArgError, "not a socket file descriptor");
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#endif
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MakeOpenFile(sock, fp);
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fp->fd = fd;
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fp->mode = FMODE_READWRITE|FMODE_DUPLEX;
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rb_io_ascii8bit_binmode(sock);
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if (rsock_do_not_reverse_lookup) {
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fp->mode |= FMODE_NOREVLOOKUP;
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}
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rb_io_synchronized(fp);
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return sock;
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}
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VALUE
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rsock_sendto_blocking(void *data)
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{
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struct rsock_send_arg *arg = data;
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VALUE mesg = arg->mesg;
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return (VALUE)sendto(arg->fd, RSTRING_PTR(mesg), RSTRING_LEN(mesg),
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arg->flags, arg->to, arg->tolen);
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}
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VALUE
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rsock_send_blocking(void *data)
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{
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struct rsock_send_arg *arg = data;
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VALUE mesg = arg->mesg;
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return (VALUE)send(arg->fd, RSTRING_PTR(mesg), RSTRING_LEN(mesg),
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arg->flags);
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}
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struct recvfrom_arg {
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int fd, flags;
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VALUE str;
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socklen_t alen;
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struct sockaddr_storage buf;
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};
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static VALUE
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recvfrom_blocking(void *data)
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{
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struct recvfrom_arg *arg = data;
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return (VALUE)recvfrom(arg->fd, RSTRING_PTR(arg->str), RSTRING_LEN(arg->str),
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arg->flags, (struct sockaddr*)&arg->buf, &arg->alen);
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}
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VALUE
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rsock_s_recvfrom(VALUE sock, int argc, VALUE *argv, enum sock_recv_type from)
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{
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rb_io_t *fptr;
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VALUE str, klass;
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struct recvfrom_arg arg;
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VALUE len, flg;
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long buflen;
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long slen;
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rb_scan_args(argc, argv, "11", &len, &flg);
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if (flg == Qnil) arg.flags = 0;
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else arg.flags = NUM2INT(flg);
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buflen = NUM2INT(len);
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GetOpenFile(sock, fptr);
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if (rb_io_read_pending(fptr)) {
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rb_raise(rb_eIOError, "recv for buffered IO");
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}
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arg.fd = fptr->fd;
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arg.alen = (socklen_t)sizeof(arg.buf);
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arg.str = str = rb_tainted_str_new(0, buflen);
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klass = RBASIC(str)->klass;
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RBASIC(str)->klass = 0;
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while (rb_io_check_closed(fptr),
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rb_thread_wait_fd(arg.fd),
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(slen = BLOCKING_REGION_FD(recvfrom_blocking, &arg)) < 0) {
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if (!rb_io_wait_readable(fptr->fd)) {
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rb_sys_fail("recvfrom(2)");
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}
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if (RBASIC(str)->klass || RSTRING_LEN(str) != buflen) {
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rb_raise(rb_eRuntimeError, "buffer string modified");
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}
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}
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RBASIC(str)->klass = klass;
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if (slen < RSTRING_LEN(str)) {
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rb_str_set_len(str, slen);
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}
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rb_obj_taint(str);
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switch (from) {
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case RECV_RECV:
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return str;
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case RECV_IP:
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#if 0
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if (arg.alen != sizeof(struct sockaddr_in)) {
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rb_raise(rb_eTypeError, "sockaddr size differs - should not happen");
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}
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#endif
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if (arg.alen && arg.alen != sizeof(arg.buf)) /* OSX doesn't return a from result for connection-oriented sockets */
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return rb_assoc_new(str, rsock_ipaddr((struct sockaddr*)&arg.buf, fptr->mode & FMODE_NOREVLOOKUP));
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else
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return rb_assoc_new(str, Qnil);
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#ifdef HAVE_SYS_UN_H
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case RECV_UNIX:
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return rb_assoc_new(str, rsock_unixaddr((struct sockaddr_un*)&arg.buf, arg.alen));
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#endif
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case RECV_SOCKET:
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return rb_assoc_new(str, rsock_io_socket_addrinfo(sock, (struct sockaddr*)&arg.buf, arg.alen));
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default:
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rb_bug("rsock_s_recvfrom called with bad value");
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}
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}
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VALUE
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rsock_s_recvfrom_nonblock(VALUE sock, int argc, VALUE *argv, enum sock_recv_type from)
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{
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rb_io_t *fptr;
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VALUE str;
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struct sockaddr_storage buf;
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socklen_t alen = (socklen_t)sizeof buf;
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VALUE len, flg;
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long buflen;
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long slen;
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int fd, flags;
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VALUE addr = Qnil;
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rb_scan_args(argc, argv, "11", &len, &flg);
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if (flg == Qnil) flags = 0;
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else flags = NUM2INT(flg);
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buflen = NUM2INT(len);
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#ifdef MSG_DONTWAIT
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/* MSG_DONTWAIT avoids the race condition between fcntl and recvfrom.
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It is not portable, though. */
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flags |= MSG_DONTWAIT;
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#endif
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GetOpenFile(sock, fptr);
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if (rb_io_read_pending(fptr)) {
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rb_raise(rb_eIOError, "recvfrom for buffered IO");
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}
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fd = fptr->fd;
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str = rb_tainted_str_new(0, buflen);
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rb_io_check_closed(fptr);
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rb_io_set_nonblock(fptr);
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slen = recvfrom(fd, RSTRING_PTR(str), buflen, flags, (struct sockaddr*)&buf, &alen);
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if (slen < 0) {
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switch (errno) {
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case EAGAIN:
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#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
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case EWOULDBLOCK:
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#endif
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rb_mod_sys_fail(rb_mWaitReadable, "recvfrom(2) would block");
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}
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rb_sys_fail("recvfrom(2)");
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}
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if (slen < RSTRING_LEN(str)) {
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rb_str_set_len(str, slen);
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}
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rb_obj_taint(str);
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switch (from) {
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case RECV_RECV:
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return str;
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case RECV_IP:
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if (alen && alen != sizeof(buf)) /* connection-oriented socket may not return a from result */
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addr = rsock_ipaddr((struct sockaddr*)&buf, fptr->mode & FMODE_NOREVLOOKUP);
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break;
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case RECV_SOCKET:
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addr = rsock_io_socket_addrinfo(sock, (struct sockaddr*)&buf, alen);
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break;
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default:
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rb_bug("rsock_s_recvfrom_nonblock called with bad value");
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}
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return rb_assoc_new(str, addr);
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}
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static int
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rsock_socket0(int domain, int type, int proto)
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{
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int ret;
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#ifdef SOCK_CLOEXEC
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static int try_sock_cloexec = 1;
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if (try_sock_cloexec) {
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ret = socket(domain, type|SOCK_CLOEXEC, proto);
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if (ret == -1 && errno == EINVAL) {
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/* SOCK_CLOEXEC is available since Linux 2.6.27. Linux 2.6.18 fails with EINVAL */
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ret = socket(domain, type, proto);
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if (ret != -1) {
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try_sock_cloexec = 0;
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}
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}
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}
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else {
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ret = socket(domain, type, proto);
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}
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#else
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ret = socket(domain, type, proto);
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#endif
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if (ret == -1)
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return -1;
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rb_fd_fix_cloexec(ret);
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return ret;
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}
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int
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rsock_socket(int domain, int type, int proto)
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{
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int fd;
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fd = rsock_socket0(domain, type, proto);
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if (fd < 0) {
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if (errno == EMFILE || errno == ENFILE) {
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rb_gc();
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fd = rsock_socket0(domain, type, proto);
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}
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}
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if (0 <= fd)
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rb_update_max_fd(fd);
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return fd;
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}
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static int
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wait_connectable(int fd)
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{
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int sockerr;
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socklen_t sockerrlen;
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int revents;
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int ret;
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for (;;) {
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/*
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* Stevens book says, succuessful finish turn on RB_WAITFD_OUT and
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* failure finish turn on both RB_WAITFD_IN and RB_WAITFD_OUT.
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*/
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revents = rb_wait_for_single_fd(fd, RB_WAITFD_IN|RB_WAITFD_OUT, NULL);
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if (revents & (RB_WAITFD_IN|RB_WAITFD_OUT)) {
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sockerrlen = (socklen_t)sizeof(sockerr);
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ret = getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&sockerr, &sockerrlen);
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/*
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* Solaris getsockopt(SO_ERROR) return -1 and set errno
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* in getsockopt(). Let's return immediately.
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*/
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if (ret < 0)
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break;
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if (sockerr == 0)
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continue; /* workaround for winsock */
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/* BSD and Linux use sockerr. */
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errno = sockerr;
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ret = -1;
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break;
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}
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if ((revents & (RB_WAITFD_IN|RB_WAITFD_OUT)) == RB_WAITFD_OUT) {
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ret = 0;
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break;
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}
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}
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return ret;
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}
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#ifdef __CYGWIN__
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#define WAIT_IN_PROGRESS 10
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#endif
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#ifdef __APPLE__
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#define WAIT_IN_PROGRESS 10
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#endif
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#ifdef __linux__
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/* returns correct error */
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#define WAIT_IN_PROGRESS 0
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#endif
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#ifndef WAIT_IN_PROGRESS
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/* BSD origin code apparently has a problem */
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#define WAIT_IN_PROGRESS 1
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#endif
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struct connect_arg {
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int fd;
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const struct sockaddr *sockaddr;
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socklen_t len;
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};
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static VALUE
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connect_blocking(void *data)
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{
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struct connect_arg *arg = data;
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return (VALUE)connect(arg->fd, arg->sockaddr, arg->len);
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}
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#if defined(SOCKS) && !defined(SOCKS5)
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static VALUE
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socks_connect_blocking(void *data)
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{
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struct connect_arg *arg = data;
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return (VALUE)Rconnect(arg->fd, arg->sockaddr, arg->len);
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}
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#endif
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int
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rsock_connect(int fd, const struct sockaddr *sockaddr, int len, int socks)
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{
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int status;
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rb_blocking_function_t *func = connect_blocking;
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struct connect_arg arg;
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#if WAIT_IN_PROGRESS > 0
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int wait_in_progress = -1;
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int sockerr;
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socklen_t sockerrlen;
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#endif
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arg.fd = fd;
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arg.sockaddr = sockaddr;
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arg.len = len;
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#if defined(SOCKS) && !defined(SOCKS5)
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if (socks) func = socks_connect_blocking;
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#endif
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for (;;) {
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status = (int)BLOCKING_REGION_FD(func, &arg);
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if (status < 0) {
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switch (errno) {
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case EINTR:
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#if defined(ERESTART)
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case ERESTART:
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#endif
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continue;
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case EAGAIN:
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#ifdef EINPROGRESS
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case EINPROGRESS:
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#endif
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#if WAIT_IN_PROGRESS > 0
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sockerrlen = (socklen_t)sizeof(sockerr);
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status = getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&sockerr, &sockerrlen);
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if (status) break;
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if (sockerr) {
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status = -1;
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errno = sockerr;
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break;
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}
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#endif
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#ifdef EALREADY
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case EALREADY:
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#endif
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#if WAIT_IN_PROGRESS > 0
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wait_in_progress = WAIT_IN_PROGRESS;
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#endif
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status = wait_connectable(fd);
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if (status) {
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break;
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}
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errno = 0;
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continue;
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#if WAIT_IN_PROGRESS > 0
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case EINVAL:
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if (wait_in_progress-- > 0) {
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/*
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* connect() after EINPROGRESS returns EINVAL on
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* some platforms, need to check true error
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* status.
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*/
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sockerrlen = (socklen_t)sizeof(sockerr);
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status = getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&sockerr, &sockerrlen);
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if (!status && !sockerr) {
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struct timeval tv = {0, 100000};
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rb_thread_wait_for(tv);
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continue;
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}
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status = -1;
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errno = sockerr;
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}
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break;
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#endif
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#ifdef EISCONN
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case EISCONN:
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status = 0;
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errno = 0;
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break;
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#endif
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default:
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break;
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}
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}
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return status;
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}
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}
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static void
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make_fd_nonblock(int fd)
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{
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int flags;
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#ifdef F_GETFL
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flags = fcntl(fd, F_GETFL);
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if (flags == -1) {
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rb_sys_fail(0);
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}
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#else
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flags = 0;
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#endif
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flags |= O_NONBLOCK;
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if (fcntl(fd, F_SETFL, flags) == -1) {
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rb_sys_fail(0);
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}
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}
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static int
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cloexec_accept(int socket, struct sockaddr *address, socklen_t *address_len)
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{
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int ret;
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#ifdef HAVE_ACCEPT4
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static int try_accept4 = 1;
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if (try_accept4) {
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ret = accept4(socket, address, address_len, SOCK_CLOEXEC);
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/* accept4 is available since Linux 2.6.28, glibc 2.10. */
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if (ret != -1) {
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if (ret <= 2)
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rb_maygvl_fd_fix_cloexec(ret);
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return ret;
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}
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if (errno == ENOSYS) {
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try_accept4 = 0;
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ret = accept(socket, address, address_len);
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}
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}
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else {
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ret = accept(socket, address, address_len);
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}
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#else
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ret = accept(socket, address, address_len);
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#endif
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if (ret == -1) return -1;
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rb_maygvl_fd_fix_cloexec(ret);
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return ret;
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}
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VALUE
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rsock_s_accept_nonblock(VALUE klass, rb_io_t *fptr, struct sockaddr *sockaddr, socklen_t *len)
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{
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int fd2;
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rb_secure(3);
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rb_io_set_nonblock(fptr);
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fd2 = cloexec_accept(fptr->fd, (struct sockaddr*)sockaddr, len);
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if (fd2 < 0) {
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switch (errno) {
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case EAGAIN:
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#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
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case EWOULDBLOCK:
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#endif
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case ECONNABORTED:
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#if defined EPROTO
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case EPROTO:
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#endif
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rb_mod_sys_fail(rb_mWaitReadable, "accept(2) would block");
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}
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rb_sys_fail("accept(2)");
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}
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rb_update_max_fd(fd2);
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make_fd_nonblock(fd2);
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return rsock_init_sock(rb_obj_alloc(klass), fd2);
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}
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struct accept_arg {
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int fd;
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struct sockaddr *sockaddr;
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socklen_t *len;
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};
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static VALUE
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|
accept_blocking(void *data)
|
|
{
|
|
struct accept_arg *arg = data;
|
|
return (VALUE)cloexec_accept(arg->fd, arg->sockaddr, arg->len);
|
|
}
|
|
|
|
VALUE
|
|
rsock_s_accept(VALUE klass, int fd, struct sockaddr *sockaddr, socklen_t *len)
|
|
{
|
|
int fd2;
|
|
int retry = 0;
|
|
struct accept_arg arg;
|
|
|
|
rb_secure(3);
|
|
arg.fd = fd;
|
|
arg.sockaddr = sockaddr;
|
|
arg.len = len;
|
|
retry:
|
|
rb_thread_wait_fd(fd);
|
|
fd2 = (int)BLOCKING_REGION_FD(accept_blocking, &arg);
|
|
if (fd2 < 0) {
|
|
switch (errno) {
|
|
case EMFILE:
|
|
case ENFILE:
|
|
if (retry) break;
|
|
rb_gc();
|
|
retry = 1;
|
|
goto retry;
|
|
default:
|
|
if (!rb_io_wait_readable(fd)) break;
|
|
retry = 0;
|
|
goto retry;
|
|
}
|
|
rb_sys_fail(0);
|
|
}
|
|
rb_update_max_fd(fd2);
|
|
if (!klass) return INT2NUM(fd2);
|
|
return rsock_init_sock(rb_obj_alloc(klass), fd2);
|
|
}
|
|
|
|
int
|
|
rsock_getfamily(int sockfd)
|
|
{
|
|
struct sockaddr_storage ss;
|
|
socklen_t sslen = (socklen_t)sizeof(ss);
|
|
|
|
ss.ss_family = AF_UNSPEC;
|
|
if (getsockname(sockfd, (struct sockaddr*)&ss, &sslen) < 0)
|
|
return AF_UNSPEC;
|
|
|
|
return ss.ss_family;
|
|
}
|
|
|
|
void
|
|
rsock_init_socket_init()
|
|
{
|
|
/*
|
|
* SocketError is the error class for socket.
|
|
*/
|
|
rb_eSocket = rb_define_class("SocketError", rb_eStandardError);
|
|
rsock_init_ipsocket();
|
|
rsock_init_tcpsocket();
|
|
rsock_init_tcpserver();
|
|
rsock_init_sockssocket();
|
|
rsock_init_udpsocket();
|
|
rsock_init_unixsocket();
|
|
rsock_init_unixserver();
|
|
rsock_init_sockopt();
|
|
rsock_init_ancdata();
|
|
rsock_init_addrinfo();
|
|
rsock_init_socket_constants();
|
|
}
|