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path: root/support/dktools/dk-recv.c
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/*
	WARNING: This file was generated by dkct.
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk-recv.ctr
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk-recv.c The dk-recv module.
*/


#line 10 "dk-recv.ctr"

#include "dk4conf.h"

#if DK4_HAVE_MATH_H
#ifndef	MATH_H_INCLUDED
#include <math.h>
#define	MATH_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_IO_H
#ifndef IO_H_INCLUDED
#include <io.h>
#define	IO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_FCNTL_H
#ifndef FCNTL_H_INCLUDED
#include <fcntl.h>
#define FCNTL_H_INCLUDED 1
#endif
#endif

#include "dk4sock.h"
#include "dk4socka.h"
#include "dk4fput.h"
#include "dk4vers.h"
#include "dk4aopt.h"
#include "dk4numco.h"
#include "dk4fopda.h"
#include "dk4isadm.h"
#include "dk4fdwre.h"
#include "dk4mpl.h"
#include "dk4mem.h"
#include "dk4mema.h"
#include "dk4strd.h"
#include "dk4pathd.h"





#line 59 "dk-recv.ctr"



/**	Default help text, shown if no localized help text is found.
*/
static const dkChar * const	dk_recv_help_text[] = {
dkT(""),
dkT("Receive data from a dk-send process."),
dkT(""),
dkT("dk-recv [<options>] <host> <port> [<file>]"),
dkT(""),
dkT("Arguments:"),
dkT("host\t\tSender host to connect to (name or IP)."),
dkT("port\t\tPort number to connect to."),
dkT("file\t\tOutput file to create. Default: Write to standard output."),
dkT(""),
dkT("Options:"),
dkT("-t\t\tTell peer to start transmission."),
dkT("-l <port>\tLocal port number to bind."),
dkT("-c <int>\tTimeout for connect attempt."),
dkT(""),
dkT("--help\t\tShow this short help text."),
dkT("--manual\t*** SHOW FULL MANUAL. ***"),
dkT("--version\tShow version information."),
dkT("--license\tShow license information."),
dkT(""),
NULL


#line 87 "dk-recv.ctr"
};



/**	License text.
*/
static const dkChar * const	dk_recv_license_text[] = {
dkT("This software uses code from the following projects, either directly or as"),
dkT("a library:"),
dkT(""),
dkT("dktools\t\tDirk Krause's tools and libraries."),
dkT("\t\tSee http://dktools.sourceforge.net/ for more information."),
#if DK4_HAVE_ZLIB_H
dkT(""),
dkT("zlib\t\tData compression library."),
dkT("\t\tSee http://www.zlib.net/ for more information."),
#endif
#if DK4_HAVE_BZLIB_H
dkT(""),
dkT("bzip2\t\tData compression program and library."),
dkT("\t\tSee http://www.bzip.org/ for more information."),
#endif
dkT(""),
dkT("All the licenses below apply to the program."),
dkT("Licenses for used libraries are shown as found on my Scientific Linux 6.x"),
dkT("computer in the /usr/share/doc directory on 2015-04-01. Check the project"),
dkT("homepages of the used libraries for additional information and/or updated"),
dkT("license terms."),
dkT(""),
dkT(""),
dkT("DK tools and libraries license"),
dkT("=============================="),
dkT("Copyright (c) 2015-2016, Dirk Krause"),
dkT("All rights reserved."),
dkT(""),
dkT("Redistribution and use in source and binary forms, with or without"),
dkT("modification, are permitted provided that the following conditions are met:"),
dkT(""),
dkT("* Redistributions of source code must retain the above copyright notice,"),
dkT("  this list of conditions and the following disclaimer."),
dkT("* Redistributions in binary form must reproduce the above copyright"),
dkT("  notice, this list of conditions and the following disclaimer in the"),
dkT("  documentation and/or other materials provided with the distribution."),
dkT("* Neither the name of the Dirk Krause nor the names of contributors may be"),
dkT("  used to endorse or promote products derived from this software without"),
dkT("  specific prior written permission."),
dkT(""),
dkT("THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\""),
dkT("AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE"),
dkT("IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE"),
dkT("ARE DISCLAIMED."),
dkT(""),
dkT("IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,"),
dkT("INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,"),
dkT("BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,"),
dkT("DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY"),
dkT("OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING"),
dkT("NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,"),
dkT("EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."),
#if DK4_HAVE_ZLIB_H
dkT(""),
dkT(""),
dkT("Zlib license"),
dkT("============"),
dkT("(C) 1995-2004 Jean-loup Gailly and Mark Adler"),
dkT(""),
dkT("This software is provided 'as-is', without any express or implied"),
dkT("warranty.  In no event will the authors be held liable for any damages"),
dkT("arising from the use of this software."),
dkT(""),
dkT("Permission is granted to anyone to use this software for any purpose,"),
dkT("including commercial applications, and to alter it and redistribute it"),
dkT("freely, subject to the following restrictions:"),
dkT(""),
dkT("1. The origin of this software must not be misrepresented; you must not"),
dkT("   claim that you wrote the original software. If you use this software"),
dkT("   in a product, an acknowledgment in the product documentation would be"),
dkT("   appreciated but is not required."),
dkT("2. Altered source versions must be plainly marked as such, and must not be"),
dkT("   misrepresented as being the original software."),
dkT("3. This notice may not be removed or altered from any source distribution."),
dkT(""),
dkT("Jean-loup Gailly        Mark Adler"),
dkT("jloup@gzip.org          madler@alumni.caltech.edu"),
#endif
#if DK4_HAVE_BZLIB_H
dkT(""),
dkT(""),
dkT("Bzip2 and libbzip2 library license"),
dkT("=================================="),
dkT("This program, \"bzip2\", the associated library \"libbzip2\", and all"),
dkT("documentation, are copyright (C) 1996-2007 Julian R Seward.  All"),
dkT("rights reserved."),
dkT(""),
dkT("Redistribution and use in source and binary forms, with or without"),
dkT("modification, are permitted provided that the following conditions"),
dkT("are met:"),
dkT(""),
dkT("1. Redistributions of source code must retain the above copyright"),
dkT("   notice, this list of conditions and the following disclaimer."),
dkT(""),
dkT("2. The origin of this software must not be misrepresented; you must "),
dkT("   not claim that you wrote the original software.  If you use this "),
dkT("   software in a product, an acknowledgment in the product "),
dkT("   documentation would be appreciated but is not required."),
dkT(""),
dkT("3. Altered source versions must be plainly marked as such, and must"),
dkT("   not be misrepresented as being the original software."),
dkT(""),
dkT("4. The name of the author may not be used to endorse or promote "),
dkT("   products derived from this software without specific prior written "),
dkT("   permission."),
dkT(""),
dkT("THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS"),
dkT("OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED"),
dkT("WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE"),
dkT("ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY"),
dkT("DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL"),
dkT("DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE"),
dkT("GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS"),
dkT("INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,"),
dkT("WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING"),
dkT("NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS"),
dkT("SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."),
dkT(""),
dkT("Julian Seward, jseward@bzip.org"),
dkT("bzip2/libbzip2 version 1.0.5 of 10 December 2007"),
#endif
dkT(""),
NULL


#line 218 "dk-recv.ctr"
};



/**	Constant texts used by the program, not localized.
*/
static const dkChar * const	dk_recv_kwnl[] = {
/* 0 */
dkT("dktools"),

/* 1 */
dkT("dk-recv.txt"),

/* 2 */
dkT("dk-recv.str"),

/* 3 */
dkT("\\"),

/* 4 */
dkT("wb"),

NULL


#line 247 "dk-recv.ctr"
};



/**	Constant texts used by the program, replaced by localized
	versions if found.
*/
static const dkChar * const	dk_recv_kw_def[] = {
/* 0 */
dkT("Failed to set up signal handlers!"),

/* 1 */
dkT("Failed to restore signal handlers!"),

/* 2 */
dkT("stdin"),

/* 3 */
dkT("Failed to close file!"),

/* 4 */
dkT("Timeout too large!"),

/* 5 */
dkT("Timeout must not be negative!"),

/* 6 */
dkT("Timeout value not found!"),

/* 7 */
dkT("Wrong number of arguments!\n\thost port [filename]"),

/* 8 */
dkT("Interrupted by SIGINT signal!"),

/* 9 */
dkT("Interrupted by SIGTERM signal!"),

/* 10 */
dkT("Interrupted by SIGPIPE signal!"),

NULL


#line 292 "dk-recv.ctr"
};



/**	Options used by the program.
*/
static const dk4_option_specification_t dk_recv_options[] = {

  /*	I am the last client, server can start transmissin now.
  */
  { dkT('t'),	dkT("transmission"),	DK4_OPT_ARG_NONE },

  /*	Bind a certain local port number.
  */
  { dkT('l'),	dkT("local-port"),	DK4_OPT_ARG_STRING },

  /*	Use a timeout when connecting to the server.
  */
  { dkT('c'),	dkT("connect-timeout"),	DK4_OPT_ARG_DOUBLE }
};



/**	Array of localized texts, loaded in the main() function.
	Usable as long as the app pointer below is usable.
*/
static const dkChar * const	*dk_recv_kw_loc	=	NULL;



/**	Local port number to use.
*/
static const dkChar		*dk_recv_portno	=	NULL;



/**	Application structure for diagnostics.
*/	
static	dk4_app_t	*app	= NULL;



/**	Number of elements in the dk_recv_options array.
*/
static const size_t dk_recv_sz_options =
sizeof(dk_recv_options)/sizeof(dk4_option_specification_t);



/**	Number of elements in the dk_recv_kw_def array.
*/
static const size_t	dk_recv_sz_def	=
sizeof(dk_recv_kw_def)/sizeof(DK4_PCDKCHAR) - 1;



/**	Number of elements in the dk_recv_kw_def array.
*/
static size_t	dk_recv_sz_loc	=
sizeof(dk_recv_kw_def)/sizeof(DK4_PCDKCHAR) - 1;



/**	Seconds for timeout.
*/
static long	dk_recv_timeout_secs	=	0L;



/**	Microseconds for timeout.
*/
static long	dk_recv_timeout_usecs	=	0L;



/**	Exit status code.
*/
static	int		 exval	= EXIT_FAILURE;



/**	Flag send to server: Start transmission immediately.
*/
static	unsigned char	 start_transmission = 0x00;



#ifdef SIGPIPE
/**	Indicator: SIGPIPE signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_pipe	=	0;
#endif

/**	Indicator: SIGINT signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_int	=	0;

/**	Indicator: SIGTERM signal received.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t	sig_had_term	=	0;



/**	Pass a volatile pointer to an atomic integer.
	This function is necessary as some compilers mis-optimize
	direct access to volatile variables (at least if you believe
	one of the coding standards).
	@param	ptr	Address of atomic integer variable.
	@return	The unmodified pointer.
*/
static
DK4_VOLATILE
dk4_sig_atomic_t *
sig_pass_pointer(DK4_VOLATILE dk4_sig_atomic_t *ptr)
{
  return ptr;
}



#ifdef SIGPIPE
/**	Handler for SIGPIPE signal.
	@param	signo	Signal number (always SIGPIPE, ignored).
*/
static
void
sig_handler_pipe(int signo)
{
  *sig_pass_pointer(&sig_had_pipe) = 1;
}
#endif

/**	Handler for SIGINT signal.
	@param	signo	Signal number (always SIGINT, ignored).
*/
static
void
sig_handler_int(int signo)
{
  *sig_pass_pointer(&sig_had_int) = 1;
}

/**	Handler for SIGTERM signal.
	@param	signo	Signal number (always SIGTERM, ignored).
*/
static
void
sig_handler_term(int signo)
{
  *sig_pass_pointer(&sig_had_term) = 1;
}

/**	Read value from volatile atomic type.
	This function is necessary as some compilers mis-optimize
	direct access to volatile variables (at least if you believe
	one of the coding standards).
	@param	ap	Pointer to volatile atomic variable.
	@return	Contents of the variable.
*/
static
dk4_sig_atomic_t
sig_read_atomic(DK4_VOLATILE dk4_sig_atomic_t *ap)
{
  return (*ap);
}

/**	Check whether we can continue or if a signal was received.
	@param	check_pipe	Flag: Check for occured SIGPIPE signal too.
	@return	1 if the program can continue, 0 if a signal was received.
*/
static
int
sig_can_continue(int check_pipe)
{
  int		back = 1;
#ifdef SIGPIPE
  if (0 != check_pipe) {
    if (0 != sig_read_atomic(&sig_had_pipe)) { back = 0; }
  }
#endif
  if (0 != sig_read_atomic(&sig_had_int )) { back = 0; }
  if (0 != sig_read_atomic(&sig_had_term)) { back = 0; }
  return back;
}



#if 0

/*
	2016-01-02:
	Removed - replaced by sig_can_continue(1) - after profiling.
*/

/**	Check whether we can continue.
	@return	1 for yes, 0 for no.
*/
static
int
dk_recv_can_continue(void)
{
  int		back	=	1;
  if (0 == sig_can_continue(1)) {
    back = 0;
  }
  return back;
}

#endif
/* if 0 */



/**	Data buffer
*/
#if DK4_SIZEOF_SIZE_T > 2
static	char	 bu[1048576];
#else
static	char	 bu[16384];
#endif

/**	Run for hostname, port specification and real file name
	(wildcards * and ? resolved on Windows).
	@param	hostname	Host to connect to (name or address).
	@param	portspec	Port to connect to (number or service name).
	@param	filename	File name to write, may be NULL (stdout).
*/
static
void
dk_recv_run_with_real_file_name(
  const	dkChar	*hostname,
  const dkChar	*portspec,
  const	dkChar	*filename
)
{
#if 0
  /*	2016-01-06:
	Buffer size increased, do not use stack.
  */
  char			 bu[1460];			/* Data buffer */
#endif
  FILE			*fipo	= NULL;			/* Output file */
  size_t		 sz	= 0;			/* Buffer sizes */
  size_t		 wrb	= 0;			/* Bytes written */
  dk4_socket_t		 sock	= INVALID_SOCKET;	/* Client socket */
#if DK4_ON_WINDOWS
  int			 oldmode= _O_TEXT;		/* File mode stdout */
#endif
  int			 cc	= 1;			/* Flag: Can continue */
  int			 first	= 1;			/* Flag: First pass */
  int			 res	= 0;			/* Operation result */
  int			 we	= 0;			/* Flag: Write error */
  int			 tests	= 0;

  

#line 553 "dk-recv.ctr"
  /*	Check for signals.
  */
  if (0 == sig_can_continue(1)) {
    goto finished;
  }	

#line 558 "dk-recv.ctr"

  /*	Bring socket subsystem up (Windows).
  */
  if (DK4_SOCKET_RESULT_SUCCESS != dk4socket_up_app(app)) {
    /* ERROR: Failed to bring socket subsystem up, already reported */
    goto finished;
  }	

#line 565 "dk-recv.ctr"

  /*	Open TCP client socket.
  */
  sock = dk4socket_tcp_client_for_host_service_app(
    hostname, portspec, dk_recv_portno,
    dk_recv_timeout_secs, dk_recv_timeout_usecs, app
  );
  if (INVALID_SOCKET == sock) {
    /* ERROR: Failed to create socket, already reported */
    goto tcpip_down;
  }	

#line 576 "dk-recv.ctr"
  if (0 == sig_can_continue(1)) {
    goto close_socket;
  }	

#line 579 "dk-recv.ctr"

  /*	Send start-of-transmission byte and shutdown socket for writing.
  */
  sz = 1;
  res = dk4socket_send_app(sock, &start_transmission, &sz, 0, 0L, 0L, app);
  if (DK4_SOCKET_RESULT_SUCCESS != res) {
    goto close_socket;
  }	

#line 587 "dk-recv.ctr"
  if (0 == sig_can_continue(1)) {
    goto close_socket;
  }	

#line 590 "dk-recv.ctr"
  res = dk4socket_shutdown_app(sock, DK4_SOCKET_SHUT_WRITE, app);
  if (DK4_SOCKET_RESULT_SUCCESS != res) {
    goto close_socket;
  }	

#line 594 "dk-recv.ctr"
  if (0 == sig_can_continue(1)) {
    goto close_socket;
  }	

#line 597 "dk-recv.ctr"

  /*	Indicate success so far.
  */
  exval = EXIT_SUCCESS;

  /*	Now receive data.
  */
  do {
    if (0 != sig_can_continue(1)) {	

#line 606 "dk-recv.ctr"
      sz = sizeof(bu);
      res = dk4socket_recv_app(sock, bu, &sz, 0, 0L, 0L, app);
      if (DK4_SOCKET_RESULT_SUCCESS == res) {
        if (0 < sz) {			

#line 610 "dk-recv.ctr"
	  if (0 != sig_can_continue(1)) {
            if (0 != first) {		

#line 612 "dk-recv.ctr"
	      first = 0;
	      if (NULL != filename) {	

#line 614 "dk-recv.ctr"
	        tests = DK4_FOPEN_SC_USER;
	        if (0 != dk4isadmin()) { tests = DK4_FOPEN_SC_PRIVILEGED; }
	        fipo = dk4fopen_app(filename, dk_recv_kwnl[4], tests, app);
	        if (NULL == fipo) {	

#line 618 "dk-recv.ctr"
	          exval = EXIT_FAILURE;
	        }
	      } else {			

#line 621 "dk-recv.ctr"
	        /* MODE FOR WINDOWS */
#if DK4_ON_WINDOWS
	        oldmode = _setmode(_fileno(stdout), _O_BINARY);
#endif
	        fipo = stdout;
	      }
	    }
	    if (NULL != fipo) {		

#line 629 "dk-recv.ctr"
	      if (0 == we) {		

#line 630 "dk-recv.ctr"
	        errno = 0;		

#line 631 "dk-recv.ctr"
	        wrb = fwrite(bu, 1, sz, fipo);
	        if (wrb != sz) {	

#line 633 "dk-recv.ctr"
	          we = 1;
	          exval = EXIT_FAILURE;
	          /* ERROR: Write attempt failed */
		  dk4fd_write_error_msg(
		    app,
		    ((filename) ? (filename) : (dk_recv_kw_def[2])),
		    errno
		  );
	        }
	      }
	    }
	  } else {	

#line 645 "dk-recv.ctr"
	    cc = -1;
	  }
        } else {	

#line 648 "dk-recv.ctr"
          cc = 0;
        }
      } else {		

#line 651 "dk-recv.ctr"
        cc = -1;
      }
    } else {		

#line 654 "dk-recv.ctr"
      cc = -1;
    }
  } while (1 == cc);

  /*	Cleanup
  */
  if (0 == first) {			

#line 661 "dk-recv.ctr"
    if (NULL != filename) {		

#line 662 "dk-recv.ctr"
      if (NULL != fipo) {		

#line 663 "dk-recv.ctr"
        if (0 != fclose(fipo)) {	

#line 664 "dk-recv.ctr"
	  /* ERROR: Failed to close file */
	  dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 3);
	  exval = EXIT_FAILURE;
	}
      }
    } else {				

#line 670 "dk-recv.ctr"
      if (0 != fflush(stdout)) {	

#line 671 "dk-recv.ctr"
        exval = EXIT_FAILURE;
      }
#if DK4_ON_WINDOWS
      _setmode(_fileno(stdout), oldmode);
#endif
    }
  }

  /*	Close socket if open.
  */
  close_socket:
  if (INVALID_SOCKET != sock) {		

#line 683 "dk-recv.ctr"
    dk4socket_close_app(sock, app);
  }

  /*	Shut socket subsystem down (Windows).
  */
  tcpip_down:
  dk4socket_down_app(app);		

#line 690 "dk-recv.ctr"

  finished: ;
  

#line 693 "dk-recv.ctr"
}



#if DK4_ON_WINDOWS
/**	Expand file name and run for host, port and file name.
	@param	hostname	Host name or address to connect to.
	@param	portspec	Remote port to connect to.
	@param	filename	File name pattern to expand.
*/
static
void
dk_recv_expand_file_name(
  const	dkChar	*hostname,
  const dkChar	*portspec,
  const	dkChar	*filename
)
{
  dkChar		 buf[DK4_MAX_PATH];
  dk4_dir_t		*fne;
  const	dkChar		*pt;
  const dkChar		*fn;
  size_t		 szbuf;
  int			 copied;

  fne = dk4app_fne_open(filename, app);
  if (NULL != fne) {
    fn = dk4dir_next_file(fne);
    if (NULL != fn) {
      pt = dk4dir_get_path(fne);
      if (NULL == dk4dir_next_file(fne)) {
        if (NULL != pt) {
	  szbuf = DK4_SIZEOF(buf, dkChar);
	  copied = 0;
	  if (0 != dk4str_cpy_s(buf, szbuf, pt, NULL)) {
	    if (0 != dk4str_cat_s(buf, szbuf, dk_recv_kwnl[3], NULL)) {
	      if (0 != dk4str_cat_s(buf, szbuf, fn, NULL)) {
	        copied = 1;
		dk_recv_run_with_real_file_name(hostname, portspec, buf);
	      }
	    }
	  }
	  if (0 == copied) {
	    /* ERROR: Path too long */
	    dk4app_log_base3(app, DK4_LL_ERROR, 100, 105, filename);
	  }
	} else {
	  dk_recv_run_with_real_file_name(hostname, portspec, fn);
	}
      } else {
        /* ERROR: Not a unique file name */
	dk4app_log_base3(app, DK4_LL_ERROR, 100, 106, filename);
      }
    } else {
      /* ERROR: No such file */
      dk4app_log_base3(app, DK4_LL_ERROR, 100, 107, filename);
    }
    dk4dir_close(fne);
  }
}
#endif



/**	Run for given host, port and file name.
	@param	hostname	Host name or address to connect to.
	@param	portspec	Remote port to connect to.
	@param	filename	File name to write to, may be NULL (stdout).
*/
static
void
dk_recv_run_for_arguments(
  const	dkChar	*hostname,
  const dkChar	*portspec,
  const	dkChar	*filename
)
{
#if DK4_ON_WINDOWS
  if (0 != dk4path_must_expand(filename)) {
    dk_recv_expand_file_name(hostname, portspec, filename);
  } else {
#endif
    dk_recv_run_with_real_file_name(hostname, portspec, filename);
#if DK4_ON_WINDOWS
  }
#endif
}



/**	Process options, retrieve command line arguments and run
	for given host, port and optionally file name.
*/
static
void
dk_recv_normal_run(void)
{
  double		 timeout;
  double		 d1;
  double		 d2;
  int	 		 xargc;
  int			 canrun;
  

#line 796 "dk-recv.ctr"
  canrun = 1;
  /*	Timeout specified?
  */
  if (0 != dk4app_opt_is_set_short(app, dkT('t'), NULL)) {
    start_transmission = 0x01;
  }
  /*	Local port number specified?
  */
  if (0 != dk4app_opt_is_set_short(app, dkT('l'), NULL)) {
    dk_recv_portno = dk4app_opt_get_string_ptr_short(app, dkT('l'), NULL);
  }
  /*	Connection timeout specified?
  */
  if (0 != dk4app_opt_is_set_short(app, dkT('c'), NULL)) {
    if (0 != dk4app_opt_get_double_short(&timeout, app, dkT('c'), NULL)) {
      if (0.0 <= timeout) {
        d1 = floor(timeout);
	d2 = timeout - d1;
	d2 = 1000000.0 * d2;
	if ((double)(LONG_MAX) >= d1) {
	  dk_recv_timeout_secs  = (long)d1;
	  dk_recv_timeout_usecs = (long)d2;
	} else {
	  canrun = 0;
	  /* ERROR: Timeout too large */
          dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 4);
	}
      } else {
        /* Warning: Can not use a negative timeout */
	dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_WARNING, 5);
      }
    } else {
      canrun = 0;
      /* No timeout value found ! */
      dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 6);
    }
  }
  if (0 != canrun) {
    xargc = dk4app_get_argc(app);
    switch (xargc) {
      case 2: {
        dk_recv_run_for_arguments(
          dk4app_get_argv(app, 0),
	  dk4app_get_argv(app, 1),
	  NULL
        );
      } break;
      case 3: {
        dk_recv_run_for_arguments(
          dk4app_get_argv(app, 0),
	  dk4app_get_argv(app, 1),
	  dk4app_get_argv(app, 2)
        );
      } break;
      default : {
        /* ERROR: Wrong number of arguments */
	dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 7);
      } break;
    }
  }
  

#line 857 "dk-recv.ctr"
}



#if	DK4_HAVE_SIGACTION
/**	Set signal handlers and run.
*/
static
void
dk_recv_run_with_signal_handlers(void)
{
#ifdef SIGPIPE
  struct sigaction opipe;
#endif
  struct sigaction oint;
#ifdef SIGPIPE
  struct sigaction npipe;
#endif
  struct sigaction nint;
  struct sigaction oterm;
  struct sigaction nterm;
  int	 success = 0;

#ifdef SIGPIPE
  /*	Set up signal handling for SIGPIPE.
  */
  DK4_MEMRES(&npipe, sizeof(npipe));
  npipe.sa_handler = sig_handler_pipe;
  npipe.sa_flags = 0;
  if (0 != sigemptyset(&npipe.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGPIPE */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto finished;
  }
  if (0 != sigaddset(&npipe.sa_mask, SIGPIPE)) {
    /* ERROR: Failed to set up masked signal set for SIGPIPE */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto finished;
  }
  if (0 != sigaction(SIGPIPE, &npipe, &opipe)) {
    /* ERROR: Failed to set up signal handler for SIGPIPE */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto finished;
  }
#endif

  /*	Set up signal handling for SIGINT.
  */
  DK4_MEMRES(&nint, sizeof(nint));
  nint.sa_handler = sig_handler_int;
  nint.sa_flags = 0;
  if (0 != sigemptyset(&nint.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGINT */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }
  if (0 != sigaddset(&nint.sa_mask, SIGINT)) {
    /* ERROR: Failed to set up masked signal set for SIGINT */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }
  if (0 != sigaction(SIGINT, &nint, &oint)) {
    /* ERROR: Failed to set up signal handler for SIGINT */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto restore_old_pipe;
  }

  /*	Set up signal handling for SIGTERM
  */
  DK4_MEMRES(&nterm, sizeof(nterm));
  nterm.sa_handler = sig_handler_term;
  nterm.sa_flags = 0;
  if (0 != sigemptyset(&nterm.sa_mask)) {
    /* ERROR: Failed to set up masked signal set for SIGTERM */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }
  if (0 != sigaddset(&nterm.sa_mask, SIGTERM)) {
    /* ERROR: Failed to set up masked signal set for SIGTERM */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }
  if (0 != sigaction(SIGTERM, &nterm, &oterm)) {
    /* ERROR: Failed to set up signal handler for SIGTERM */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 0);
    goto restore_old_int;
  }

  success = 1;
  dk_recv_normal_run();

  /*	Restore signal handling for SIGTERM.
  */
  if (0 != sigaction(SIGTERM, &oterm, NULL)) {
    /* ERROR: Failed to restore old SIGTERM settings */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 1);
    success = 0;
  }

  /*	Restore signal handling for SIGINT.
  */
  restore_old_int:
  if (0 != sigaction(SIGINT, &oint, NULL)) {
    /* ERROR: Failed to restore old SIGPIPE settings */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 1);
    success = 0;
  }

#ifdef SIGPIPE
  /*	Restore signal handling for SIGPIPE.
  */
  restore_old_pipe:
  if (0 != sigaction(SIGPIPE, &opipe, NULL)) {
    /* ERROR: Failed to restore old SIGPIPE settings */
    dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 1);
    success = 0;
  }
#endif

  /*	Set exit status code if error occured.
  */
  finished:
  if (0 == success) { exval = EXIT_FAILURE; }
}
#else
#if	DK4_HAVE_SIGSET
/**	Set signal handlers and run.
*/
static
void
dk_recv_run_with_signal_handlers(void)
{
#ifdef SIGPIPE
  dk4_sig_handler_t	*oldpipe = NULL;
#endif
  dk4_sig_handler_t	*oldint  = NULL;
  dk4_sig_handler_t	*oldterm = NULL;

#ifdef SIGPIPE
  oldpipe = sigset(SIGPIPE, sig_handler_pipe);
#endif
  oldint  = sigset(SIGINT,  sig_handler_int);
  oldterm = sigset(SIGTERM, sig_handler_term);
  dk_recv_normal_run();
  sigset(SIGTERM, oldterm);
  sigset(SIGINT,  oldint);
#ifdef SIGPIPE
  sigset(SIGPIPE, oldpipe);
#endif
}
#else
#if	DK4_HAVE_SIGNAL
/**	Set signal handlers and run.
*/
static
void
dk_recv_run_with_signal_handlers(void)
{
#ifdef SIGPIPE
  dk4_sig_handler_t	*oldpipe = NULL;
#endif
  dk4_sig_handler_t	*oldint  = NULL;
  dk4_sig_handler_t	*oldterm = NULL;

#ifdef SIGPIPE
  oldpipe = signal(SIGPIPE, sig_handler_pipe);
#endif
  oldint  = signal(SIGINT,  sig_handler_int);
  oldterm = signal(SIGTERM, sig_handler_term);
  dk_recv_normal_run();
  signal(SIGTERM, oldterm);
  signal(SIGINT,  oldint);
#ifdef SIGPIPE
  signal(SIGPIPE, oldpipe);
#endif
}
#else
/**	Set signal handlers and run.
*/
static
void
dk_recv_run_with_signal_handlers(void)
{
  dk_recv_normal_run();
}
#endif
#endif
#endif



/**	Main function.
	@param	argc	Number of command line arguments.
	@param	argv	Command line arguments array.
	@return	0 on success, all other values indicate errors.
*/
#if DK4_CHAR_SIZE > 1
int wmain(int argc, wchar_t *argv[])
#else
int main(int argc, char *argv[])
#endif
{
  

#line 1060 "dk-recv.ctr"
  

#line 1061 "dk-recv.ctr"
  dk4fput_initialize_stderr();
  app = dk4app_open_cmd(
    argc, argv, dk_recv_options, dk_recv_sz_options,
    dk_recv_kwnl[0], DKT_VERSION_DK,
    dk_recv_kwnl[1], dk_recv_help_text, dk_recv_license_text
  );
  if (NULL != app) {					

#line 1068 "dk-recv.ctr"
    dk_recv_sz_loc = dk4app_string_table_size(dk_recv_kw_def);
    dk_recv_kw_loc = dk4app_string_table(app, dk_recv_kwnl[2], dk_recv_kw_def);
    dk_recv_sz_loc = dk4app_string_table_size(dk_recv_kw_loc);
    if (0 != dk4app_can_run_normally(app)) {
      dk_recv_run_with_signal_handlers();
    } else {
      if (0 != dk4app_help_version_license(app)) {
        exval = EXIT_SUCCESS;
      }
    }
    if (0 != sig_read_atomic(&sig_had_int )) {
      /* Interrupted by SIGINT */
      dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 8);
    }
    if (0 != sig_read_atomic(&sig_had_term)) {
      /* Interrupted by SIGTERM */
      dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 9);
    }
#if defined(SIGPIPE)
    if (0 != sig_read_atomic(&sig_had_pipe)) {
      /* Interrupted by SIGPIPE */
      dk4app_log_1(app, dk_recv_kw_loc, dk_recv_sz_loc, DK4_LL_ERROR, 10);
    }
#endif
    dk4app_close(app); app = NULL;
  } else {						

#line 1094 "dk-recv.ctr"
  }
  fflush(stderr);
  dk4fput_cleanup_stderr();
  if (0 != sig_read_atomic(&sig_had_int )) {
    exval = EXIT_FAILURE;
  }
  if (0 != sig_read_atomic(&sig_had_term)) {
    exval = EXIT_FAILURE;
  }
#if defined(SIGPIPE)
  if (0 != sig_read_atomic(&sig_had_pipe)) {
    exval = EXIT_FAILURE;
  }
#endif
  

#line 1109 "dk-recv.ctr"
  

#line 1110 "dk-recv.ctr"
  exit(exval); return exval;
}