[thirdparty/cups.git] / filter / gziptoany.c

/*
 * "$Id: gziptoany.c 4494 2005-02-18 02:18:11Z mike $"
 *
 *   GZIP pre-filter for the Common UNIX Printing System (CUPS).
 *
 *   Copyright 1993-2005 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products and are protected by Federal
 *   copyright law.  Distribution and use rights are outlined in the file
 *   "LICENSE.txt" which should have been included with this file.  If this
 *   file is missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636 USA
 *
 *       Voice: (301) 373-9600
 *       EMail: cups-info@cups.org
 *         WWW: http://www.cups.org
 *
 *   This file is subject to the Apple OS-Developed Software exception.
 *
 * Contents:
 *
 *   main() - Uncompress gzip'd files and send them to stdout...
 */

/*
 * Include necessary headers...
 */

#include <cups/string.h>
#include <stdlib.h>
#include <errno.h>

#ifdef HAVE_LIBZ
#  include <zlib.h>
#endif /* HAVE_LIBZ */


/*
 * 'main()' - Uncompress gzip'd files and send them to stdout...
 */

int					/* O - Exit status */
main(int  argc,				/* I - Number of command-line arguments */
     char *argv[])			/* I - Command-line arguments */
{
#ifdef HAVE_LIBZ
  gzFile	fp;			/* GZIP'd file */
  char		buffer[8192];		/* Data buffer */
  int		bytes;			/* Number of bytes read/written */
  int		copies;			/* Number of copies */
  const char	*content_type;		/* Content type for file... */


 /*
  * Check command-line...
  */

  if (argc != 7)
  {
    fputs("ERROR: gziptoany job-id user title copies options file\n", stderr);
    return (1);
  }

 /*
  * Get the copy count; if the MIME type is "application/vnd.cups-raw" then
  * make copies since the file is going straight to a backend...
  */

  if ((content_type = getenv("CONTENT_TYPE")) != NULL &&
      !strcasecmp(content_type, "application/vnd.cups-raw"))
    copies = atoi(argv[4]);
  else
    copies = 1;

 /*
  * Open the gzip file...
  */

  if ((fp = gzopen(argv[6], "rb")) == NULL)
  {
    fprintf(stderr, "ERROR: Unable to open GZIP file: %s\n", strerror(errno));
    return (1);
  }

 /*
  * Copy the gzip file to stdout...
  */

  setbuf(stdout, NULL);

  while (copies > 0)
  {
    gzrewind(fp);

    while ((bytes = gzread(fp, buffer, sizeof(buffer))) > 0)
      if (fwrite(buffer, 1, bytes, stdout) < bytes)
      {
	fprintf(stderr, "ERROR: Unable to write uncompressed document data: %s\n",
        	strerror(ferror(stdout)));
	gzclose(fp);

	return (1);
      }

    copies --;
  }

 /*
  * Close the file and return...
  */

  gzclose(fp);

  return (0);
#else
  fputs("INFO: Hint: recompile CUPS with ZLIB.\n", stderr);
  fputs("ERROR: GZIP compression support not compiled in!\n", stderr);
  return (1);
#endif /* HAVE_LIBZ */
}


/*
 * End of "$Id: gziptoany.c 4494 2005-02-18 02:18:11Z mike $".
 */
Commit	Line	Data
ef416fc2	1	/*
f7faf1f5	2	* "$Id: gziptoany.c 4494 2005-02-18 02:18:11Z mike $"
ef416fc2	3	*
	4	* GZIP pre-filter for the Common UNIX Printing System (CUPS).
	5	*
	6	* Copyright 1993-2005 by Easy Software Products.
	7	*
	8	* These coded instructions, statements, and computer programs are the
	9	* property of Easy Software Products and are protected by Federal
	10	* copyright law. Distribution and use rights are outlined in the file
	11	* "LICENSE.txt" which should have been included with this file. If this
	12	* file is missing or damaged please contact Easy Software Products
	13	* at:
	14	*
	15	* Attn: CUPS Licensing Information
	16	* Easy Software Products
	17	* 44141 Airport View Drive, Suite 204
	18	* Hollywood, Maryland 20636 USA
	19	*
	20	* Voice: (301) 373-9600
	21	* EMail: cups-info@cups.org
	22	* WWW: http://www.cups.org
	23	*
	24	* This file is subject to the Apple OS-Developed Software exception.
	25	*
	26	* Contents:
	27	*
	28	* main() - Uncompress gzip'd files and send them to stdout...
	29	*/
	30
	31	/*
	32	* Include necessary headers...
	33	*/
	34
	35	#include <cups/string.h>
	36	#include <stdlib.h>
	37	#include <errno.h>
	38
	39	#ifdef HAVE_LIBZ
	40	# include <zlib.h>
	41	#endif /* HAVE_LIBZ */
	42
	43
	44	/*
	45	* 'main()' - Uncompress gzip'd files and send them to stdout...
	46	*/
	47
	48	int /* O - Exit status */
	49	main(int argc, /* I - Number of command-line arguments */
	50	char argv[]) / I - Command-line arguments */
	51	{
	52	#ifdef HAVE_LIBZ
	53	gzFile fp; /* GZIP'd file */
	54	char buffer[8192]; /* Data buffer */
	55	int bytes; /* Number of bytes read/written */
	56	int copies; /* Number of copies */
	57	const char content_type; / Content type for file... */
	58
	59
	60	/*
	61	* Check command-line...
	62	*/
	63
	64	if (argc != 7)
	65	{
	66	fputs("ERROR: gziptoany job-id user title copies options file\n", stderr);
67	return (1);
68	}
69
70	/*
71	* Get the copy count; if the MIME type is "application/vnd.cups-raw" then
72	* make copies since the file is going straight to a backend...
73	*/
74
75	if ((content_type = getenv("CONTENT_TYPE")) != NULL &&
76	!strcasecmp(content_type, "application/vnd.cups-raw"))
77	copies = atoi(argv[4]);
78	else
79	copies = 1;
80
81	/*
82	* Open the gzip file...
83	*/
84
85	if ((fp = gzopen(argv[6], "rb")) == NULL)
86	{
87	fprintf(stderr, "ERROR: Unable to open GZIP file: %s\n", strerror(errno));
88	return (1);
89	}
90
91	/*
92	* Copy the gzip file to stdout...
93	*/
94
95	setbuf(stdout, NULL);
96
97	while (copies > 0)
98	{
99	gzrewind(fp);
100
101	while ((bytes = gzread(fp, buffer, sizeof(buffer))) > 0)
102	if (fwrite(buffer, 1, bytes, stdout) < bytes)
103	{
104	fprintf(stderr, "ERROR: Unable to write uncompressed document data: %s\n",
105	strerror(ferror(stdout)));
106	gzclose(fp);
107
108	return (1);
109	}
110
111	copies --;
112	}
113
114	/*
115	* Close the file and return...
116	*/
117
118	gzclose(fp);
119
120	return (0);
121	#else
122	fputs("INFO: Hint: recompile CUPS with ZLIB.\n", stderr);
123	fputs("ERROR: GZIP compression support not compiled in!\n", stderr);
124	return (1);
125	#endif /* HAVE_LIBZ */
126	}
127
128
129	/*
f7faf1f5	130	* End of "$Id: gziptoany.c 4494 2005-02-18 02:18:11Z mike $".
ef416fc2	131	*/