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socat/xio-unix.c

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/* source: xio-unix.c */
/* Copyright Gerhard Rieger 2001-2007 */
/* Published under the GNU General Public License V.2, see file COPYING */
/* this file contains the source for opening addresses of UNIX socket type */
#include "xiosysincludes.h"
#include "xioopen.h"
#include "xio-socket.h"
#include "xio-listen.h"
#include "xio-unix.h"
#include "xio-named.h"
#if WITH_UNIX
static int xioopen_unix_connect(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3);
static int xioopen_unix_listen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3);
static int xioopen_unix_sendto(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int dummy2, int dummy3);
static int xioopen_unix_recvfrom(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int dummy1, int dummy2, int dummy3);
static
int xioopen_unix_recv(int argc, const char *argv[], struct opt *opts,
int xioflags, xiofile_t *xfd, unsigned groups,
int pf, int socktype, int ipproto);
static
int xioopen_unix_client(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int dummy1, int dummy2, int dummy3);
#if WITH_ABSTRACT_UNIXSOCKET
static int xioopen_abstract_connect(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3);
static int xioopen_abstract_listen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *fd, unsigned groups, int dummy1, int dummy2, int dummy3);
static int xioopen_abstract_sendto(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int dummy2, int dummy3);
static int xioopen_abstract_recvfrom(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int dummy1, int dummy2, int dummy3);
static
int xioopen_abstract_recv(int argc, const char *argv[], struct opt *opts,
int xioflags, xiofile_t *xfd, unsigned groups,
int pf, int socktype, int ipproto);
static
int xioopen_abstract_client(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xfd, unsigned groups, int dummy1, int dummy2, int dummy3);
#endif /* WITH_ABSTRACT_UNIXSOCKET */
const struct addrdesc addr_unix_connect = { "unix-connect", 3, xioopen_unix_connect, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, 0, SOCK_STREAM, 0 HELP(":<filename>") };
#if WITH_LISTEN
const struct addrdesc addr_unix_listen = { "unix-listen", 3, xioopen_unix_listen, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 0, SOCK_STREAM, 0 HELP(":<filename>") };
#endif /* WITH_LISTEN */
const struct addrdesc addr_unix_sendto = { "unix-sendto", 3, xioopen_unix_sendto, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, 0, SOCK_DGRAM, 0 HELP(":<filename>") };
const struct addrdesc addr_unix_recvfrom= { "unix-recvfrom", 3, xioopen_unix_recvfrom, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY|GROUP_CHILD, PF_UNIX, SOCK_DGRAM, 0 HELP(":<filename>") };
const struct addrdesc addr_unix_recv = { "unix-recv", 1, xioopen_unix_recv, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, PF_UNIX, SOCK_DGRAM, 0 HELP(":<filename>") };
const struct addrdesc addr_unix_client = { "unix-client", 3, xioopen_unix_client, GROUP_FD|GROUP_NAMED|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, PF_UNIX, 0, 0 HELP(":<filename>") };
#if WITH_ABSTRACT_UNIXSOCKET
const struct addrdesc xioaddr_abstract_connect = { "abstract-connect", 3, xioopen_abstract_connect, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, 0, SOCK_STREAM, 0 HELP(":<filename>") };
#if WITH_LISTEN
const struct addrdesc xioaddr_abstract_listen = { "abstract-listen", 3, xioopen_abstract_listen, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_LISTEN|GROUP_CHILD|GROUP_RETRY, 0, SOCK_STREAM, 0 HELP(":<filename>") };
#endif /* WITH_LISTEN */
const struct addrdesc xioaddr_abstract_sendto = { "abstract-sendto", 3, xioopen_abstract_sendto, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, 0, SOCK_DGRAM, 0 HELP(":<filename>") };
const struct addrdesc xioaddr_abstract_recvfrom= { "abstract-recvfrom", 3, xioopen_abstract_recvfrom, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY|GROUP_CHILD, PF_UNIX, SOCK_DGRAM, 0 HELP(":<filename>") };
const struct addrdesc xioaddr_abstract_recv = { "abstract-recv", 1, xioopen_abstract_recv, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, PF_UNIX, SOCK_DGRAM, 0 HELP(":<filename>") };
const struct addrdesc xioaddr_abstract_client = { "abstract-client", 3, xioopen_abstract_client, GROUP_FD|GROUP_SOCKET|GROUP_SOCK_UNIX|GROUP_RETRY, PF_UNIX, 0, 0 HELP(":<filename>") };
#endif /* WITH_ABSTRACT_UNIXSOCKET */
const struct optdesc opt_unix_tightsocklen = { "unix-tightsocklen", "tightsocklen", OPT_UNIX_TIGHTSOCKLEN, GROUP_SOCK_UNIX, PH_INIT, TYPE_BOOL, OFUNC_SPEC, 0, 0 };
socklen_t
xiosetunix(struct sockaddr_un *saun,
const char *path,
bool abstract,
bool tight) {
size_t pathlen;
socklen_t len;
if (!abstract) {
if ((pathlen = strlen(path)) > sizeof(saun->sun_path)) {
Warn2("unix socket address "F_Zu" characters long, truncating to "F_Zu"",
pathlen, sizeof(saun->sun_path));
}
strncpy(saun->sun_path, path, sizeof(saun->sun_path));
if (tight) {
len = sizeof(struct sockaddr_un)-sizeof(saun->sun_path)+
MIN(pathlen, sizeof(saun->sun_path));
#if HAVE_STRUCT_SOCKADDR_SALEN
saun->sun_len = len;
#endif
} else {
len = sizeof(struct sockaddr_un);
}
#if HAVE_STRUCT_SOCKADDR_SALEN
saun->sun_len = len;
#endif
} else {
if ((pathlen = strlen(path)) >= sizeof(saun->sun_path)) {
Warn2("socket address "F_Zu" characters long, truncating to "F_Zu"",
pathlen+1, sizeof(saun->sun_path));
}
saun->sun_path[0] = '\0'; /* so it's abstract */
strncpy(saun->sun_path+1, path, sizeof(saun->sun_path)-1);
if (tight) {
len = sizeof(struct sockaddr_un)-sizeof(saun->sun_path)+
MIN(pathlen+1, sizeof(saun->sun_path));
#if HAVE_STRUCT_SOCKADDR_SALEN
saun->sun_len = len;
#endif
} else {
len = sizeof(struct sockaddr_un);
}
}
return len;
}
#if WITH_LISTEN
static int xioopen_unix_listen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
/* we expect the form: filename */
const char *name;
xiosingle_t *xfd = &xxfd->stream;
struct sockaddr_un us;
socklen_t uslen;
bool tight = true;
struct opt *opts0 = NULL;
bool opt_unlink_early = false;
bool opt_unlink_close = true;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
socket_un_init(&us);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
uslen = xiosetunix(&us, name, false, tight);
retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
if (opt_unlink_close) {
if ((xfd->unlink_close = strdup(name)) == NULL) {
Error1("strdup(\"%s\"): out of memory", name);
}
xfd->opt_unlink_close = true;
}
xfd->howtoend = END_SHUTDOWN;
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
applyopts(-1, opts, PH_EARLY);
if (opt_unlink_early) {
if (Unlink(name) < 0) {
if (errno == ENOENT) {
Warn2("unlink(\"%s\"): %s", name, strerror(errno));
} else {
Error2("unlink(\"%s\"): %s", name, strerror(errno));
}
}
}
/* trying to set user-early, perm-early etc. here is useless because
file system entry is available only past bind() call. */
applyopts_named(name, opts, PH_EARLY); /* umask! */
retropt_int(opts, OPT_SO_TYPE, &socktype);
opts0 = copyopts(opts, GROUP_ALL);
if ((result =
xioopen_listen(xfd, xioflags,
(struct sockaddr *)&us, uslen,
opts, opts0, PF_UNIX, socktype, 0))
!= 0)
return result;
return 0;
}
#endif /* WITH_LISTEN */
static int xioopen_unix_connect(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
/* we expect the form: filename */
const char *name;
struct single *xfd = &xxfd->stream;
struct sockaddr_un them, us;
socklen_t themlen, uslen;
bool tight = true;
bool needbind = false;
bool opt_unlink_close = false;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
socket_un_init(&us);
socket_un_init(&them);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
themlen = xiosetunix(&them, name, false, tight);
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
if (retropt_bind(opts, AF_UNIX, socktype, 0, (struct sockaddr *)&us, &uslen, 0, 0, 0)
!= STAT_NOACTION) {
needbind = true;
}
if (opt_unlink_close) {
if ((xfd->unlink_close = strdup(name)) == NULL) {
Error1("strdup(\"%s\"): out of memory", name);
}
xfd->opt_unlink_close = true;
}
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
applyopts(-1, opts, PH_EARLY);
if ((result =
xioopen_connect(xfd,
needbind?(struct sockaddr *)&us:NULL, uslen,
(struct sockaddr *)&them, themlen,
opts, PF_UNIX, socktype, 0, false)) != 0) {
return result;
}
if ((result = _xio_openlate(xfd, opts)) < 0) {
return result;
}
return STAT_OK;
}
static int xioopen_unix_sendto(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
const char *name;
xiosingle_t *xfd = &xxfd->stream;
union sockaddr_union us;
socklen_t uslen;
bool tight = true;
int pf = PF_UNIX;
bool needbind = false;
bool opt_unlink_close = false;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
uslen = socket_init(pf, &us);
xfd->salen = socket_init(pf, &xfd->peersa);
xfd->howtoend = END_SHUTDOWN;
retropt_int(opts, OPT_SO_TYPE, &socktype);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
xfd->salen = xiosetunix(&xfd->peersa.un, name, false, tight);
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
xfd->dtype = XIODATA_RECVFROM;
if (retropt_bind(opts, pf, socktype, 0, &us.soa, &uslen, 0, 0, 0)
!= STAT_NOACTION) {
needbind = true;
}
if (opt_unlink_close) {
if ((xfd->unlink_close = strdup(name)) == NULL) {
Error1("strdup(\"%s\"): out of memory", name);
}
xfd->opt_unlink_close = true;
}
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
return
_xioopen_dgram_sendto(needbind?&us:NULL, uslen,
opts, xioflags, xfd, groups, pf, socktype, 0);
}
static
int xioopen_unix_recvfrom(int argc, const char *argv[], struct opt *opts,
int xioflags, xiofile_t *xfd, unsigned groups,
int pf, int socktype, int dummy3) {
const char *name;
struct sockaddr_un us;
socklen_t uslen;
bool tight = true;
bool needbind = true;
bool opt_unlink_early = false;
bool opt_unlink_close = true;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
socket_un_init(&us);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
uslen = xiosetunix(&us, name, false, tight);
xfd->stream.howtoend = END_NONE;
retropt_int(opts, OPT_SO_TYPE, &socktype);
retropt_bind(opts, pf, socktype, 0, (struct sockaddr *)&us, &uslen, 1, 0, 0);
retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
if (opt_unlink_close) {
if ((xfd->stream.unlink_close = strdup(name)) == NULL) {
Error1("strdup(\"%s\"): out of memory", name);
}
xfd->stream.opt_unlink_close = true;
}
if (opt_unlink_early) {
if (Unlink(name) < 0) {
if (errno == ENOENT) {
Warn2("unlink(\"%s\"): %s", name, strerror(errno));
} else {
Error2("unlink(\"%s\"): %s", name, strerror(errno));
}
}
}
xfd->stream.para.socket.la.soa.sa_family = pf;
xfd->stream.dtype = XIODATA_RECVFROM_ONE;
return _xioopen_dgram_recvfrom(&xfd->stream, xioflags,
needbind?(struct sockaddr *)&us:NULL, uslen,
opts, pf, socktype, 0, E_ERROR);
}
static
int xioopen_unix_recv(int argc, const char *argv[], struct opt *opts,
int xioflags, xiofile_t *xfd, unsigned groups,
int pf, int socktype, int ipproto) {
const char *name;
union sockaddr_union us;
socklen_t uslen;
bool tight = true;
bool opt_unlink_early = false;
bool opt_unlink_close = true;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
retropt_int(opts, OPT_SO_TYPE, &socktype);
socket_un_init(&us.un);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
uslen = xiosetunix(&us.un, name, false, tight);
#if 1 /*!!! why bind option? */
retropt_bind(opts, pf, socktype, ipproto, &us.soa, &uslen, 1, 0, 0);
#endif
retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
if (opt_unlink_early) {
if (Unlink(name) < 0) {
if (errno == ENOENT) {
Warn2("unlink(\"%s\"): %s", name, strerror(errno));
} else {
Error2("unlink(\"%s\"): %s", name, strerror(errno));
}
}
}
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
if (opt_unlink_close) {
if ((xfd->stream.unlink_close = strdup(name)) == NULL) {
Error1("strdup(\"%s\"): out of memory", name);
}
xfd->stream.opt_unlink_close = true;
}
xfd->stream.para.socket.la.soa.sa_family = pf;
xfd->stream.dtype = XIODATA_RECV;
result = _xioopen_dgram_recv(&xfd->stream, xioflags, &us.soa, uslen,
opts, pf, socktype, ipproto, E_ERROR);
return result;
}
static int xioopen_unix_client(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
const char *name;
xiosingle_t *xfd = &xxfd->stream;
bool tight = true;
int pf = PF_UNIX;
union sockaddr_union them, us;
socklen_t themlen;
socklen_t uslen;
bool needbind = false;
bool opt_unlink_close = false;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)", argv[0], argc-1);
}
xfd->howtoend = END_SHUTDOWN;
retropt_int(opts, OPT_SO_TYPE, &socktype);
uslen = socket_init(pf, &us);
themlen = socket_init(pf, &them);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
themlen = xiosetunix(&them.un, name, false, tight);
retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
if (retropt_bind(opts, pf, socktype, 0, &us.soa, &uslen, 0, 0, 0)
!= STAT_NOACTION) {
needbind = true;
}
if (opt_unlink_close) {
if ((xfd->unlink_close = strdup(name)) == NULL) {
Error1("strdup(\"%s\"): out of memory", name);
}
xfd->opt_unlink_close = true;
}
/* xfd->dtype = DATA_STREAM; // is default */
if ((result =
xioopen_connect(xfd,
needbind?(struct sockaddr *)&us:NULL, uslen,
(struct sockaddr *)&them, themlen,
opts, PF_UNIX, socktype?socktype:SOCK_STREAM, 0, false)) != 0) {
if (errno == EPROTOTYPE) {
if (needbind) {
Unlink(us.un.sun_path);
}
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
xfd->peersa = them;
xfd->salen = sizeof(struct sockaddr_un);
if ((result =
_xioopen_dgram_sendto(needbind?&us:NULL, uslen,
opts, xioflags, xfd, groups, pf,
socktype?socktype:SOCK_DGRAM, 0))
!= 0) {
return result;
}
xfd->dtype = XIODATA_RECVFROM;
}
}
if ((result = _xio_openlate(xfd, opts)) < 0) {
return result;
}
return 0;
}
#if WITH_ABSTRACT_UNIXSOCKET
#if WITH_LISTEN
static int xioopen_abstract_listen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
/* we expect the form: filename */
const char *name;
xiosingle_t *xfd = &xxfd->stream;
bool tight = true;
struct sockaddr_un us;
socklen_t uslen;
struct opt *opts0 = NULL;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
socket_un_init(&us);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
uslen = xiosetunix(&us, name, true, tight);
xfd->howtoend = END_SHUTDOWN;
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
applyopts(-1, opts, PH_EARLY);
/* trying to set user-early, perm-early etc. here is useless because
file system entry is available only past bind() call. */
retropt_int(opts, OPT_SO_TYPE, &socktype);
opts0 = copyopts(opts, GROUP_ALL);
if ((result =
xioopen_listen(xfd, xioflags,
(struct sockaddr *)&us, uslen,
opts, opts0, PF_UNIX, socktype, 0))
!= 0)
return result;
return 0;
}
#endif /* WITH_LISTEN */
static int xioopen_abstract_connect(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
/* we expect the form: filename */
const char *name;
struct single *xfd = &xxfd->stream;
bool tight = true;
struct sockaddr_un them, us;
socklen_t themlen, uslen;
bool needbind = false;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
socket_un_init(&us);
socket_un_init(&them);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
themlen = xiosetunix(&them, name, true, tight);
if (retropt_bind(opts, AF_UNIX, socktype, 0, (struct sockaddr *)&us, &uslen, 0, 0, 0)
!= STAT_NOACTION) {
needbind = true;
}
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
applyopts(-1, opts, PH_EARLY);
if ((result =
xioopen_connect(xfd,
needbind?(struct sockaddr *)&us:NULL, uslen,
(struct sockaddr *)&them, themlen,
opts, PF_UNIX, socktype, 0, false)) != 0) {
return result;
}
if ((result = _xio_openlate(xfd, opts)) < 0) {
return result;
}
return 0;
}
static int xioopen_abstract_sendto(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
const char *name;
xiosingle_t *xfd = &xxfd->stream;
union sockaddr_union us;
socklen_t uslen;
bool tight = true;
int pf = PF_UNIX;
bool needbind = false;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
uslen = socket_init(pf, &us);
xfd->salen = socket_init(pf, &xfd->peersa);
xfd->howtoend = END_SHUTDOWN;
retropt_int(opts, OPT_SO_TYPE, &socktype);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
xfd->salen = xiosetunix(&xfd->peersa.un, name, true, tight);
xfd->dtype = XIODATA_RECVFROM;
if (retropt_bind(opts, pf, socktype, 0, &us.soa, &uslen, 0, 0, 0)
!= STAT_NOACTION) {
needbind = true;
}
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
return
_xioopen_dgram_sendto(needbind?&us:NULL, uslen,
opts, xioflags, xfd, groups, pf, socktype, 0);
}
static
int xioopen_abstract_recvfrom(int argc, const char *argv[], struct opt *opts,
int xioflags, xiofile_t *xfd, unsigned groups,
int pf, int socktype, int dummy3) {
const char *name;
struct sockaddr_un us;
socklen_t uslen;
bool tight = true;
bool needbind = true;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
socket_un_init(&us);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
uslen = xiosetunix(&us, name, true, tight);
xfd->stream.howtoend = END_NONE;
retropt_int(opts, OPT_SO_TYPE, &socktype);
retropt_bind(opts, pf, socktype, 0, (struct sockaddr *)&us, &uslen, 1, 0, 0);
xfd->stream.para.socket.la.soa.sa_family = pf;
xfd->stream.dtype = XIODATA_RECVFROM_ONE;
return _xioopen_dgram_recvfrom(&xfd->stream, xioflags,
needbind?(struct sockaddr *)&us:NULL, uslen,
opts, pf, socktype, 0, E_ERROR);
}
static
int xioopen_abstract_recv(int argc, const char *argv[], struct opt *opts,
int xioflags, xiofile_t *xfd, unsigned groups,
int pf, int socktype, int ipproto) {
const char *name;
union sockaddr_union us;
socklen_t uslen;
bool tight = true;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)",
argv[0], argc-1);
return STAT_NORETRY;
}
retropt_int(opts, OPT_SO_TYPE, &socktype);
socket_un_init(&us.un);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
uslen = xiosetunix(&us.un, name, true, tight);
#if 1 /*!!! why bind option? */
retropt_bind(opts, pf, socktype, ipproto, &us.soa, &uslen, 1, 0, 0);
#endif
xfd->stream.para.socket.la.soa.sa_family = pf;
xfd->stream.dtype = XIODATA_RECV;
result = _xioopen_dgram_recv(&xfd->stream, xioflags, &us.soa, uslen,
opts, pf, socktype, ipproto, E_ERROR);
return result;
}
static int xioopen_abstract_client(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int dummy1, int socktype, int dummy3) {
const char *name;
xiosingle_t *xfd = &xxfd->stream;
bool tight = true;
int pf = PF_UNIX;
union sockaddr_union them, us;
socklen_t themlen;
socklen_t uslen;
bool needbind = false;
int result;
if (argc != 2) {
Error2("%s: wrong number of parameters (%d instead of 1)", argv[0], argc-1);
}
xfd->howtoend = END_SHUTDOWN;
retropt_int(opts, OPT_SO_TYPE, &socktype);
uslen = socket_init(pf, &us);
themlen = socket_init(pf, &them);
retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
name = argv[1];
themlen = xiosetunix(&them.un, name, true, tight);
if (retropt_bind(opts, pf, socktype, 0, &us.soa, &uslen, 0, 0, 0)
!= STAT_NOACTION) {
needbind = true;
}
/* xfd->dtype = DATA_STREAM; // is default */
if ((result =
xioopen_connect(xfd,
needbind?(struct sockaddr *)&us:NULL, uslen,
(struct sockaddr *)&them, themlen,
opts, PF_UNIX, socktype?socktype:SOCK_STREAM, 0, false)) != 0) {
if (errno == EPROTOTYPE) {
if (needbind) {
Unlink(us.un.sun_path);
}
/* ...res_opts[] */
applyopts(-1, opts, PH_INIT);
if (applyopts_single(xfd, opts, PH_INIT) < 0) return -1;
xfd->peersa = them;
xfd->salen = themlen;
if ((result =
_xioopen_dgram_sendto(needbind?&us:NULL, uslen,
opts, xioflags, xfd, groups, pf,
socktype?socktype:SOCK_DGRAM, 0))
!= 0) {
return result;
}
xfd->dtype = XIODATA_RECVFROM;
}
}
if ((result = _xio_openlate(xfd, opts)) < 0) {
return result;
}
return 0;
}
#endif /* WITH_ABSTRACT_UNIXSOCKET */
#endif /* WITH_UNIX */
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