Exemple #1
0
static int xioopen_unix_connect(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int abstract, int dummy2, int dummy3) {
   /* we expect the form: filename */
   const char *name;
   struct single *xfd = &xxfd->stream;
   int pf = PF_UNIX;
   int socktype = SOCK_STREAM;
   int protocol = 0;
   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;
   }

   xfd->howtoend = END_SHUTDOWN;

   name = argv[1];
   retropt_socket_pf(opts, &pf);
   retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
   themlen = xiosetunix(pf, &them, name, abstract, tight);
   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
   }
   if (retropt_bind(opts, pf, socktype, protocol, (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;
   }

   if (applyopts_single(xfd, opts, PH_INIT) < 0)  return -1;
   applyopts(-1, opts, PH_INIT);
   applyopts(-1, opts, PH_EARLY);

   if ((result =
	xioopen_connect(xfd,
			needbind?(struct sockaddr *)&us:NULL, uslen,
			(struct sockaddr *)&them, themlen,
			opts, pf, socktype, protocol, false)) != 0) {
      return result;
   }
   if ((result = _xio_openlate(xfd, opts)) < 0) {
      return result;
   }
   return STAT_OK;
}
Exemple #2
0
static int xioopen_unix_sendto(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int abstract, int dummy, int dummy3) {
   /* we expect the form: filename */
   const char *name;
   xiosingle_t *xfd = &xxfd->stream;
   int pf = PF_UNIX;
   int socktype = SOCK_DGRAM;
   int protocol = 0;
   union sockaddr_union us;
   socklen_t uslen;
   bool tight = true;
   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;
   }

   retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
   name = argv[1];
   retropt_socket_pf(opts, &pf);
   xfd->salen = xiosetunix(pf, &xfd->peersa.un, name, abstract, tight);

   xfd->howtoend = END_SHUTDOWN;

   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
   }

   xfd->dtype = XIODATA_RECVFROM;

   if (retropt_bind(opts, pf, socktype, protocol, &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;
   }

   if (applyopts_single(xfd, opts, PH_INIT) < 0)  return -1;
   applyopts(-1, opts, PH_INIT);

   return
      _xioopen_dgram_sendto(needbind?&us:NULL, uslen,
			    opts, xioflags, xfd, groups,
			    pf, socktype, protocol);
}
Exemple #3
0
/* establishes communication with an existing UNIX type socket. supports stream
   and datagram socket types: first tries to connect(), but when this fails it
   falls back to sendto().
   applies and consumes the following option:
   PH_INIT, PH_PASTSOCKET, PH_FD, PH_PREBIND, PH_BIND, PH_PASTBIND,
   PH_CONNECTED, PH_LATE, ?PH_CONNECT
   OFUNC_OFFSET, 
   OPT_PROTOCOL_FAMILY, OPT_UNIX_TIGHTSOCKLEN, OPT_UNLINK_CLOSE, OPT_BIND,
   OPT_SO_TYPE, OPT_SO_PROTOTYPE, OPT_CLOEXEC, OPT_USER, OPT_GROUP, ?OPT_FORK, 
*/
int 
_xioopen_unix_client(xiosingle_t *xfd, int xioflags, unsigned groups,
		     int abstract, struct opt *opts, const char *name) {
   int pf = PF_UNIX;
   int socktype = 0;	/* to be determined by server socket type */
   int protocol = 0;
   union sockaddr_union them, us;
   socklen_t themlen, uslen;
   bool tight = true;
   bool needbind = false;
   bool opt_unlink_close = false;
   struct opt *opts0;
   int result;

   if (applyopts_single(xfd, opts, PH_INIT) < 0)  return -1;
   applyopts(-1, opts, PH_INIT);

   xfd->howtoend = END_SHUTDOWN;
   retropt_socket_pf(opts, &pf);

   retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
   themlen = xiosetunix(pf, &them.un, name, abstract, tight);

   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
   }

   if (retropt_bind(opts, pf, socktype, protocol, &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;
   }

   /* save options, because we might have to start again */
   opts0 = copyopts(opts, GROUP_ALL);

   /* xfd->dtype = DATA_STREAM; // is default */
   if ((result =
	xioopen_connect(xfd,
			needbind?(struct sockaddr *)&us:NULL, uslen,
			(struct sockaddr *)&them, themlen,
			opts, pf, socktype?socktype:SOCK_STREAM, protocol,
			false)) != 0) {
      if (errno == EPROTOTYPE) {
	 if (needbind) {
	    Unlink(us.un.sun_path);
	 }

	 dropopts2(opts, PH_INIT, PH_SPEC); opts = opts0;

	 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, protocol))
	     != 0) {
	    return result;
	 }
	 xfd->dtype = XIODATA_RECVFROM;
      }
   }
   if ((result = _xio_openlate(xfd, opts)) < 0) {
      return result;
   }
   return 0;
}
Exemple #4
0
static
int xioopen_unix_recv(int argc, const char *argv[], struct opt *opts,
		      int xioflags, xiofile_t *xxfd, unsigned groups,
		      int abstract, int dummy2, int dummy3) {
   /* we expect the form: filename */
   const char *name;
   xiosingle_t *xfd = &xxfd->stream;
   int pf = PF_UNIX;
   int socktype = SOCK_DGRAM;
   int protocol = 0;
   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;
   }

   name = argv[1];
   retropt_socket_pf(opts, &pf);
   retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
   uslen = xiosetunix(pf, &us.un, name, abstract, tight);

#if 1	/*!!! why bind option? */
   retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen, 1, 0, 0);
#endif

   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      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->unlink_close = strdup(name)) == NULL) {
	    Error1("strdup(\"%s\"): out of memory", name);
	 }
	 xfd->opt_unlink_close = true;
      }
   }

   xfd->para.socket.la.soa.sa_family = pf;

   xfd->dtype = XIODATA_RECV;
   result = _xioopen_dgram_recv(xfd, xioflags, &us.soa, uslen,
				opts, pf, socktype, protocol, E_ERROR);
   return result;
}
Exemple #5
0
static int xioopen_unix_listen(int argc, const char *argv[], struct opt *opts, int xioflags, xiofile_t *xxfd, unsigned groups, int abstract, int dummy2, int dummy3) {
   /* we expect the form: filename */
   const char *name;
   xiosingle_t *xfd = &xxfd->stream;
   int pf = PF_UNIX;
   int socktype = SOCK_STREAM;
   int protocol = 0;
   struct sockaddr_un us;
   socklen_t uslen;
   bool tight = true;
   struct opt *opts0 = NULL;
   pid_t pid = Getpid();
   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;
   }

   name = argv[1];
   retropt_socket_pf(opts, &pf);
   retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
   uslen = xiosetunix(pf, &us, name, abstract, tight);

   xfd->howtoend = END_SHUTDOWN;

   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
      retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
   }

   if (applyopts_single(xfd, opts, PH_INIT) < 0) return STAT_NORETRY;
   applyopts(-1, opts, PH_INIT);
   applyopts(-1, opts, PH_EARLY);

   if (!(ABSTRACT && abstract)) {
      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! */
   }

   opts0 = copyopts(opts, GROUP_ALL);

   if ((result =
	xioopen_listen(xfd, xioflags,
		       (struct sockaddr *)&us, uslen,
		       opts, opts0, pf, socktype, protocol))
       != 0)
      return result;

   /* we set this option as late as now because we should not remove an
      existing entry when bind() failed */
   if (!(ABSTRACT && abstract)) {
      if (opt_unlink_close) {
	 if (pid == Getpid()) {
	    if ((xfd->unlink_close = strdup(name)) == NULL) {
	       Error1("strdup(\"%s\"): out of memory", name);
	    }
	    xfd->opt_unlink_close = true;
	 }
      }
   }
   return 0;
}
Exemple #6
0
static
int xioopen_unix_recvfrom(int argc, const char *argv[], struct opt *opts,
		     int xioflags, xiofile_t *xxfd, unsigned groups,
		     int abstract, int dummy2, int dummy3) {
   /* we expect the form: filename */
   const char *name;
   xiosingle_t *xfd = &xxfd->stream;
   int pf = PF_UNIX;
   int socktype = SOCK_DGRAM;
   int protocol = 0;
   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;
   }

   name = argv[1];
   retropt_socket_pf(opts, &pf);
   retropt_bool(opts, OPT_UNIX_TIGHTSOCKLEN, &tight);
   uslen = xiosetunix(pf, &us, name, abstract, tight);

   xfd->howtoend = END_NONE;
   retropt_bind(opts, pf, socktype, protocol, (struct sockaddr *)&us, &uslen,
		1, 0, 0);

   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
      retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
   }

   if (!(ABSTRACT && abstract)) {
      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));
	    }
	 }
      } else {
	 struct stat buf;
	 if (Lstat(name, &buf) == 0) {
	    Error1("\"%s\" exists", name);
	    return STAT_RETRYLATER;
	 }
      }
      if (opt_unlink_close) {
	 if ((xfd->unlink_close = strdup(name)) == NULL) {
	    Error1("strdup(\"%s\"): out of memory", name);
	 }
	 xfd->opt_unlink_close = true;
      }

      /* 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! */

   xfd->para.socket.la.soa.sa_family = pf;

   xfd->dtype = XIODATA_RECVFROM_ONE;

   /* this may fork */
   return
      _xioopen_dgram_recvfrom(xfd, xioflags,
			      needbind?(struct sockaddr *)&us:NULL, uslen,
			      opts, pf, socktype, protocol, E_ERROR);
}
Exemple #7
0
static
int xioopen_unix_recv(int argc, const char *argv[], struct opt *opts,
		      int xioflags, xiofile_t *xxfd, unsigned groups,
		      int abstract, int dummy2, int dummy3) {
   /* we expect the form: filename */
   const char *name;
   xiosingle_t *xfd = &xxfd->stream;
   int pf = PF_UNIX;
   int socktype = SOCK_DGRAM;
   int protocol = 0;
   union sockaddr_union us;
   socklen_t uslen;
   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;
   }
   name = argv[1];

   xfd->para.socket.un.tight = true;
   retropt_socket_pf(opts, &pf);
   xfd->howtoend = END_SHUTDOWN;
   if (applyopts_single(xfd, opts, PH_INIT) < 0)  return STAT_NORETRY;
   applyopts(-1, opts, PH_INIT);
   applyopts_named(name, opts, PH_EARLY);       /* umask! */
   applyopts_offset(xfd, opts);

   if (!(ABSTRACT && abstract)) {
      /* only for non abstract because abstract do not work in file system */
      retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
      retropt_bool(opts, OPT_UNLINK_CLOSE, &opt_unlink_close);
   }
   applyopts(-1, opts, PH_EARLY);

   uslen = xiosetunix(pf, &us.un, name, abstract, xfd->para.socket.un.tight);

#if 0
   if (retropt_bind(opts, pf, socktype, protocol, &us.soa, &uslen,
		    (abstract<<1)|xfd->para.socket.un.tight, 0, 0)
       == STAT_OK) {
   }
#endif

   if (!(ABSTRACT && abstract)) {
      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));
	    }
	 }
      } else {
	 struct stat buf;
	 if (Lstat(name, &buf) == 0) {
	    Error1("\"%s\" exists", name);
	    return STAT_RETRYLATER;
	 }
      }
      if (opt_unlink_close) {
	 if ((xfd->unlink_close = strdup(name)) == NULL) {
	    Error1("strdup(\"%s\"): out of memory", name);
	 }
	 xfd->opt_unlink_close = true;
      }
   }
   applyopts_named(name, opts, PH_EARLY);	/* umask! */

   xfd->para.socket.la.soa.sa_family = pf;

   xfd->dtype = XIODATA_RECV;
   result = _xioopen_dgram_recv(xfd, xioflags, &us.soa, uslen,
				opts, pf, socktype, protocol, E_ERROR);
   return result;
}