/*
- * "$Id: tempfile.c,v 1.4 2002/03/01 19:53:30 mike Exp $"
+ * "$Id$"
*
* Temp file utilities for the Common UNIX Printing System (CUPS).
*
- * Copyright 1997-2002 by Easy Software Products.
+ * Copyright 2007-2008 by Apple Inc.
+ * Copyright 1997-2006 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 20636-3111 USA
- *
- * Voice: (301) 373-9603
- * EMail: cups-info@cups.org
- * WWW: http://www.cups.org
+ * property of Apple Inc. 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
+ * file is missing or damaged, see the license at "http://www.cups.org/".
*
* This file is subject to the Apple OS-Developed Software exception.
*
* Contents:
*
- * cupsTempFd() - Create a temporary file.
- * cupsTempFile() - Generate a temporary filename.
+ * cupsTempFd() - Creates a temporary file.
+ * cupsTempFile() - Generates a temporary filename.
+ * cupsTempFile2() - Creates a temporary CUPS file.
*/
/*
* Include necessary headers...
*/
-#include "cups.h"
-#include "string.h"
+#include "globals.h"
#include "debug.h"
#include <stdlib.h>
-#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/stat.h>
/*
- * 'cupsTempFd()' - Create a temporary file.
+ * 'cupsTempFd()' - Creates a temporary file.
+ *
+ * The temporary filename is returned in the filename buffer.
+ * The temporary file is opened for reading and writing.
*/
-int /* O - New file descriptor */
+int /* O - New file descriptor or -1 on error */
cupsTempFd(char *filename, /* I - Pointer to buffer */
int len) /* I - Size of buffer */
{
int fd; /* File descriptor for temp file */
+ int tries; /* Number of tries */
+ const char *tmpdir; /* TMPDIR environment var */
#ifdef WIN32
- char tmpdir[1024]; /* Windows temporary directory */
+ char tmppath[1024]; /* Windows temporary directory */
DWORD curtime; /* Current time */
#else
- char *tmpdir; /* TMPDIR environment var */
struct timeval curtime; /* Current time */
#endif /* WIN32 */
- static char buf[1024] = ""; /* Buffer if you pass in NULL and 0 */
/*
- * See if a filename was specified...
+ * See if TMPDIR is defined...
*/
- if (filename == NULL)
+#ifdef WIN32
+ if ((tmpdir = getenv("TEMP")) == NULL)
{
- filename = buf;
- len = sizeof(buf);
+ GetTempPath(sizeof(tmppath), tmppath);
+ tmpdir = tmppath;
}
-
+#else
/*
- * See if TMPDIR is defined...
+ * Previously we put root temporary files in the default CUPS temporary
+ * directory under /var/spool/cups. However, since the scheduler cleans
+ * out temporary files there and runs independently of the user apps, we
+ * don't want to use it unless specifically told to by cupsd.
*/
-#ifdef WIN32
- GetTempPath(sizeof(tmpdir), tmpdir);
-#else
if ((tmpdir = getenv("TMPDIR")) == NULL)
- {
- /*
- * Put root temp files in restricted temp directory...
- */
-
- if (getuid() == 0)
- tmpdir = CUPS_REQUESTS "/tmp";
- else
- tmpdir = "/var/tmp";
- }
+# ifdef __APPLE__
+ tmpdir = "/private/tmp"; /* /tmp is a symlink to /private/tmp */
+# else
+ tmpdir = "/tmp";
+# endif /* __APPLE__ */
#endif /* WIN32 */
/*
* Make the temporary name using the specified directory...
*/
+ tries = 0;
+
do
{
#ifdef WIN32
* Get the current time of day...
*/
- curtime = GetTickCount();
+ curtime = GetTickCount() + tries;
/*
* Format a string using the hex time values...
*/
- snprintf(filename, len - 1, "%s/%08lx", tmpdir, curtime);
+ snprintf(filename, len - 1, "%s/%05lx%08lx", tmpdir,
+ GetCurrentProcessId(), curtime);
#else
/*
* Get the current time of day...
* Format a string using the hex time values...
*/
- snprintf(filename, len - 1, "%s/%08lx%05lx", tmpdir,
- curtime.tv_sec, curtime.tv_usec);
+ snprintf(filename, len - 1, "%s/%05x%08lx", tmpdir, (unsigned)getpid(),
+ (unsigned long)(curtime.tv_sec + curtime.tv_usec + tries));
#endif /* WIN32 */
/*
* stomp on an existing file or someone's symlink crack...
*/
-#ifdef O_NOFOLLOW
+#ifdef WIN32
+ fd = open(filename, _O_CREAT | _O_RDWR | _O_TRUNC | _O_BINARY,
+ _S_IREAD | _S_IWRITE);
+#elif defined(O_NOFOLLOW)
fd = open(filename, O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW, 0600);
#else
fd = open(filename, O_RDWR | O_CREAT | O_EXCL, 0600);
-#endif /* O_NOFOLLOW */
+#endif /* WIN32 */
- if (fd < 0 && (errno == EPERM || errno == ENOENT))
- break; /* Stop immediately if permission denied or the dir doesn't exist! */
+ if (fd < 0 && errno != EEXIST)
+ break;
+
+ tries ++;
}
- while (fd < 0);
+ while (fd < 0 && tries < 1000);
/*
* Return the file descriptor...
/*
- * 'cupsTempFile()' - Generate a temporary filename.
+ * 'cupsTempFile()' - Generates a temporary filename.
+ *
+ * The temporary filename is returned in the filename buffer.
+ * This function is deprecated - use @link cupsTempFd@ or
+ * @link cupsTempFile2@ instead.
+ *
+ * @deprecated@
*/
-char * /* O - Filename */
+char * /* O - Filename or @code NULL@ on error */
cupsTempFile(char *filename, /* I - Pointer to buffer */
int len) /* I - Size of buffer */
{
int fd; /* File descriptor for temp file */
- static char buf[1024] = ""; /* Buffer if you pass in NULL and 0 */
+ _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */
/*
if (filename == NULL)
{
- filename = buf;
- len = sizeof(buf);
+ filename = cg->tempfile;
+ len = sizeof(cg->tempfile);
}
/*
/*
- * End of "$Id: tempfile.c,v 1.4 2002/03/01 19:53:30 mike Exp $".
+ * 'cupsTempFile2()' - Creates a temporary CUPS file.
+ *
+ * The temporary filename is returned in the filename buffer.
+ * The temporary file is opened for writing.
+ *
+ * @since CUPS 1.2/Mac OS X 10.5@
+ */
+
+cups_file_t * /* O - CUPS file or @code NULL@ on error */
+cupsTempFile2(char *filename, /* I - Pointer to buffer */
+ int len) /* I - Size of buffer */
+{
+ cups_file_t *file; /* CUPS file */
+ int fd; /* File descriptor */
+
+
+ if ((fd = cupsTempFd(filename, len)) < 0)
+ return (NULL);
+ else if ((file = cupsFileOpenFd(fd, "w")) == NULL)
+ {
+ close(fd);
+ unlink(filename);
+ return (NULL);
+ }
+ else
+ return (file);
+}
+
+
+/*
+ * End of "$Id$".
*/
projects / thirdparty / cups.git / blobdiff