/*
* call-seq:
* basicsocket.send(mesg, flags [, dest_sockaddr]) => numbytes_sent
*
* send _mesg_ via _basicsocket_.
*
* _mesg_ should be a string.
*
* _flags_ should be a bitwise OR of Socket::MSG_* constants.
*
* _dest_sockaddr_ should be a packed sockaddr string or an addrinfo.
*
* TCPSocket.open("localhost", 80) {|s|
* s.send "GET / HTTP/1.0\r\n\r\n", 0
* p s.read
* }
*/
VALUE
rsock_bsock_send(int argc, VALUE *argv, VALUE sock)
{
struct rsock_send_arg arg;
VALUE flags, to;
rb_io_t *fptr;
int n;
rb_blocking_function_t *func;
rb_secure(4);
rb_scan_args(argc, argv, "21", &arg.mesg, &flags, &to);
StringValue(arg.mesg);
if (!NIL_P(to)) {
SockAddrStringValue(to);
to = rb_str_new4(to);
arg.to = (struct sockaddr *)RSTRING_PTR(to);
arg.tolen = (socklen_t)RSTRING_LENINT(to);
func = rsock_sendto_blocking;
}
else {
func = rsock_send_blocking;
}
GetOpenFile(sock, fptr);
arg.fd = fptr->fd;
arg.flags = NUM2INT(flags);
while (rb_thread_fd_writable(arg.fd),
(n = (int)BLOCKING_REGION_FD(func, &arg)) < 0) {
if (rb_io_wait_writable(arg.fd)) {
continue;
}
rb_sys_fail("send(2)");
}
return INT2FIX(n);
}
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:
rsock_maybe_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("accept(2)");
}
rb_update_max_fd(fd2);
if (!klass) return INT2NUM(fd2);
return rsock_init_sock(rb_obj_alloc(klass), fd2);
}
int
rsock_connect(int fd, const struct sockaddr *sockaddr, int len, int socks)
{
int status;
rb_blocking_function_t *func = connect_blocking;
struct connect_arg arg;
arg.fd = fd;
arg.sockaddr = sockaddr;
arg.len = len;
#if defined(SOCKS) && !defined(SOCKS5)
if (socks) func = socks_connect_blocking;
#endif
status = (int)BLOCKING_REGION_FD(func, &arg);
if (status < 0) {
switch (errno) {
case EINTR:
#ifdef ERESTART
case ERESTART:
#endif
case EAGAIN:
#ifdef EINPROGRESS
case EINPROGRESS:
#endif
return wait_connectable(fd);
}
}
return status;
}
/*
* call-seq:
* udpsocket.send(mesg, flags, host, port) => numbytes_sent
* udpsocket.send(mesg, flags, sockaddr_to) => numbytes_sent
* udpsocket.send(mesg, flags) => numbytes_sent
*
* Sends _mesg_ via _udpsocket_.
*
* _flags_ should be a bitwise OR of Socket::MSG_* constants.
*
* u1 = UDPSocket.new
* u1.bind("127.0.0.1", 4913)
*
* u2 = UDPSocket.new
* u2.send "hi", 0, "127.0.0.1", 4913
*
* mesg, addr = u1.recvfrom(10)
* u1.send mesg, 0, addr[3], addr[1]
*
* p u2.recv(100) #=> "hi"
*
*/
static VALUE
udp_send(int argc, VALUE *argv, VALUE sock)
{
VALUE flags, host, port;
rb_io_t *fptr;
int n;
struct addrinfo *res0, *res;
struct rsock_send_arg arg;
if (argc == 2 || argc == 3) {
return rsock_bsock_send(argc, argv, sock);
}
rb_scan_args(argc, argv, "4", &arg.mesg, &flags, &host, &port);
StringValue(arg.mesg);
res0 = rsock_addrinfo(host, port, SOCK_DGRAM, 0);
GetOpenFile(sock, fptr);
arg.fd = fptr->fd;
arg.flags = NUM2INT(flags);
for (res = res0; res; res = res->ai_next) {
retry:
arg.to = res->ai_addr;
arg.tolen = res->ai_addrlen;
rb_thread_fd_writable(arg.fd);
n = (int)BLOCKING_REGION_FD(rsock_sendto_blocking, &arg);
if (n >= 0) {
freeaddrinfo(res0);
return INT2FIX(n);
}
if (rb_io_wait_writable(fptr->fd)) {
goto retry;
}
}
freeaddrinfo(res0);
rsock_sys_fail_host_port("sendto(2)", host, port);
return INT2FIX(n);
}
/*
* 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)
{
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 = (socklen_t)CMSG_SPACE(sizeof(int));
arg.msg.msg_flags = 0;
cmsg.hdr.cmsg_len = (socklen_t)CMSG_LEN(sizeof(int));
cmsg.hdr.cmsg_level = SOL_SOCKET;
cmsg.hdr.cmsg_type = SCM_RIGHTS;
fd = -1;
memcpy(CMSG_DATA(&cmsg.hdr), &fd, sizeof(int));
#else
arg.msg.msg_accrights = (caddr_t)&fd;
arg.msg.msg_accrightslen = sizeof(fd);
fd = -1;
#endif
arg.fd = fptr->fd;
while ((int)BLOCKING_REGION_FD(recvmsg_blocking, &arg) == -1) {
if (!rb_io_wait_readable(arg.fd))
rb_sys_fail("recvmsg(2)");
}
#if FD_PASSING_BY_MSG_CONTROL
if (arg.msg.msg_controllen < (socklen_t)sizeof(struct cmsghdr)) {
rb_raise(rb_eSocket,
"file descriptor was not passed (msg_controllen=%d smaller than sizeof(struct cmsghdr)=%d)",
(int)arg.msg.msg_controllen, (int)sizeof(struct cmsghdr));
}
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);
}
if (arg.msg.msg_controllen < (socklen_t)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 ((socklen_t)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))) {
rsock_discard_cmsg_resource(&arg.msg, 0);
rb_raise(rb_eSocket,
"file descriptor was not passed (cmsg_len=%d, %d expected)",
(int)cmsg.hdr.cmsg_len, (int)CMSG_LEN(sizeof(int)));
}
#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
memcpy(&fd, CMSG_DATA(&cmsg.hdr), sizeof(int));
#endif
rb_update_max_fd(fd);
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);
}
}
/*
* 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)
{
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 = (socklen_t)CMSG_LEN(sizeof(int));
arg.msg.msg_flags = 0;
MEMZERO((char*)&cmsg, char, sizeof(cmsg));
cmsg.hdr.cmsg_len = (socklen_t)CMSG_LEN(sizeof(int));
cmsg.hdr.cmsg_level = SOL_SOCKET;
cmsg.hdr.cmsg_type = SCM_RIGHTS;
memcpy(CMSG_DATA(&cmsg.hdr), &fd, sizeof(int));
#else
arg.msg.msg_accrights = (caddr_t)&fd;
arg.msg.msg_accrightslen = sizeof(fd);
#endif
arg.fd = fptr->fd;
while ((int)BLOCKING_REGION_FD(sendmsg_blocking, &arg) == -1) {
if (!rb_io_wait_writable(arg.fd))
rb_sys_fail("sendmsg(2)");
}
return Qnil;
}
VALUE
rsock_s_recvfrom(VALUE sock, int argc, VALUE *argv, enum sock_recv_type from)
{
rb_io_t *fptr;
VALUE str, klass;
struct recvfrom_arg arg;
VALUE len, flg;
long buflen;
long slen;
rb_scan_args(argc, argv, "11", &len, &flg);
if (flg == Qnil) arg.flags = 0;
else arg.flags = NUM2INT(flg);
buflen = NUM2INT(len);
GetOpenFile(sock, fptr);
if (rb_io_read_pending(fptr)) {
rb_raise(rb_eIOError, "recv for buffered IO");
}
arg.fd = fptr->fd;
arg.alen = (socklen_t)sizeof(arg.buf);
arg.str = str = rb_tainted_str_new(0, buflen);
klass = RBASIC(str)->klass;
rb_obj_hide(str);
while (rb_io_check_closed(fptr),
rsock_maybe_wait_fd(arg.fd),
(slen = BLOCKING_REGION_FD(recvfrom_blocking, &arg)) < 0) {
if (!rb_io_wait_readable(fptr->fd)) {
rb_sys_fail("recvfrom(2)");
}
if (RBASIC(str)->klass || RSTRING_LEN(str) != buflen) {
rb_raise(rb_eRuntimeError, "buffer string modified");
}
}
rb_obj_reveal(str, klass);
if (slen < RSTRING_LEN(str)) {
rb_str_set_len(str, slen);
}
rb_obj_taint(str);
switch (from) {
case RECV_RECV:
return str;
case RECV_IP:
#if 0
if (arg.alen != sizeof(struct sockaddr_in)) {
rb_raise(rb_eTypeError, "sockaddr size differs - should not happen");
}
#endif
if (arg.alen && arg.alen != sizeof(arg.buf)) /* OSX doesn't return a from result for connection-oriented sockets */
return rb_assoc_new(str, rsock_ipaddr(&arg.buf.addr, arg.alen, fptr->mode & FMODE_NOREVLOOKUP));
else
return rb_assoc_new(str, Qnil);
#ifdef HAVE_SYS_UN_H
case RECV_UNIX:
return rb_assoc_new(str, rsock_unixaddr(&arg.buf.un, arg.alen));
#endif
case RECV_SOCKET:
return rb_assoc_new(str, rsock_io_socket_addrinfo(sock, &arg.buf.addr, arg.alen));
default:
rb_bug("rsock_s_recvfrom called with bad value");
}
}
int
rsock_connect(int fd, const struct sockaddr *sockaddr, int len, int socks)
{
int status;
rb_blocking_function_t *func = connect_blocking;
struct connect_arg arg;
#if WAIT_IN_PROGRESS > 0
int wait_in_progress = -1;
int sockerr;
socklen_t sockerrlen;
#endif
arg.fd = fd;
arg.sockaddr = sockaddr;
arg.len = len;
#if defined(SOCKS) && !defined(SOCKS5)
if (socks) func = socks_connect_blocking;
#endif
for (;;) {
status = (int)BLOCKING_REGION_FD(func, &arg);
if (status < 0) {
switch (errno) {
case EINTR:
#if defined(ERESTART)
case ERESTART:
#endif
continue;
case EAGAIN:
#ifdef EINPROGRESS
case EINPROGRESS:
#endif
#if WAIT_IN_PROGRESS > 0
sockerrlen = (socklen_t)sizeof(sockerr);
status = getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&sockerr, &sockerrlen);
if (status) break;
if (sockerr) {
status = -1;
errno = sockerr;
break;
}
#endif
#ifdef EALREADY
case EALREADY:
#endif
#if WAIT_IN_PROGRESS > 0
wait_in_progress = WAIT_IN_PROGRESS;
#endif
status = wait_connectable(fd);
if (status) {
break;
}
errno = 0;
continue;
#if WAIT_IN_PROGRESS > 0
case EINVAL:
if (wait_in_progress-- > 0) {
/*
* connect() after EINPROGRESS returns EINVAL on
* some platforms, need to check true error
* status.
*/
sockerrlen = (socklen_t)sizeof(sockerr);
status = getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&sockerr, &sockerrlen);
if (!status && !sockerr) {
struct timeval tv = {0, 100000};
rb_thread_wait_for(tv);
continue;
}
status = -1;
errno = sockerr;
}
break;
#endif
#ifdef EISCONN
case EISCONN:
status = 0;
errno = 0;
break;
#endif
default:
break;
}
}
return status;
}
}
