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422 lines
7.2 KiB
422 lines
7.2 KiB
/*
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* Directory routines for CUPS.
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*
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* This set of APIs abstracts enumeration of directory entries.
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*
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* Copyright 2007-2017 by Apple Inc.
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* Copyright 1997-2005 by Easy Software Products, all rights reserved.
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*
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* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
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*/
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/*
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* Include necessary headers...
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*/
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#include "string-private.h"
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#include "debug-internal.h"
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#include "dir.h"
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/*
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* Windows implementation...
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*/
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#ifdef _WIN32
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# include <windows.h>
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/*
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* Types and structures...
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*/
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struct _cups_dir_s /**** Directory data structure ****/
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{
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char directory[1024]; /* Directory filename */
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HANDLE dir; /* Directory handle */
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cups_dentry_t entry; /* Directory entry */
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};
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/*
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* '_cups_dir_time()' - Convert a FILETIME value to a UNIX time value.
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*/
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time_t /* O - UNIX time */
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_cups_dir_time(FILETIME ft) /* I - File time */
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{
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ULONGLONG val; /* File time in 0.1 usecs */
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/*
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* Convert file time (1/10 microseconds since Jan 1, 1601) to UNIX
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* time (seconds since Jan 1, 1970). There are 11,644,732,800 seconds
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* between them...
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*/
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val = ft.dwLowDateTime + ((ULONGLONG)ft.dwHighDateTime << 32);
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return ((time_t)(val / 10000000 - 11644732800));
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}
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/*
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* 'cupsDirClose()' - Close a directory.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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void
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cupsDirClose(cups_dir_t *dp) /* I - Directory pointer */
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{
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/*
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* Range check input...
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*/
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if (!dp)
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return;
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/*
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* Close an open directory handle...
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*/
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if (dp->dir != INVALID_HANDLE_VALUE)
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FindClose(dp->dir);
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/*
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* Free memory used...
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*/
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free(dp);
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}
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/*
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* 'cupsDirOpen()' - Open a directory.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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cups_dir_t * /* O - Directory pointer or @code NULL@ if the directory could not be opened. */
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cupsDirOpen(const char *directory) /* I - Directory name */
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{
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cups_dir_t *dp; /* Directory */
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/*
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* Range check input...
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*/
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if (!directory)
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return (NULL);
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/*
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* Allocate memory for the directory structure...
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*/
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dp = (cups_dir_t *)calloc(1, sizeof(cups_dir_t));
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if (!dp)
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return (NULL);
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/*
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* Copy the directory name for later use...
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*/
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dp->dir = INVALID_HANDLE_VALUE;
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strlcpy(dp->directory, directory, sizeof(dp->directory));
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/*
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* Return the new directory structure...
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*/
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return (dp);
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}
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/*
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* 'cupsDirRead()' - Read the next directory entry.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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cups_dentry_t * /* O - Directory entry or @code NULL@ if there are no more */
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cupsDirRead(cups_dir_t *dp) /* I - Directory pointer */
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{
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WIN32_FIND_DATAA entry; /* Directory entry data */
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/*
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* Range check input...
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*/
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if (!dp)
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return (NULL);
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/*
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* See if we have already started finding files...
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*/
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if (dp->dir == INVALID_HANDLE_VALUE)
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{
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/*
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* No, find the first file...
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*/
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dp->dir = FindFirstFileA(dp->directory, &entry);
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if (dp->dir == INVALID_HANDLE_VALUE)
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return (NULL);
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}
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else if (!FindNextFileA(dp->dir, &entry))
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return (NULL);
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/*
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* Copy the name over and convert the file information...
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*/
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strlcpy(dp->entry.filename, entry.cFileName, sizeof(dp->entry.filename));
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if (entry.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
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dp->entry.fileinfo.st_mode = 0755 | S_IFDIR;
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else
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dp->entry.fileinfo.st_mode = 0644;
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dp->entry.fileinfo.st_atime = _cups_dir_time(entry.ftLastAccessTime);
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dp->entry.fileinfo.st_ctime = _cups_dir_time(entry.ftCreationTime);
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dp->entry.fileinfo.st_mtime = _cups_dir_time(entry.ftLastWriteTime);
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dp->entry.fileinfo.st_size = entry.nFileSizeLow + ((unsigned long long)entry.nFileSizeHigh << 32);
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/*
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* Return the entry...
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*/
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return (&(dp->entry));
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}
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/*
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* 'cupsDirRewind()' - Rewind to the start of the directory.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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void
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cupsDirRewind(cups_dir_t *dp) /* I - Directory pointer */
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{
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/*
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* Range check input...
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*/
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if (!dp)
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return;
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/*
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* Close an open directory handle...
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*/
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if (dp->dir != INVALID_HANDLE_VALUE)
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{
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FindClose(dp->dir);
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dp->dir = INVALID_HANDLE_VALUE;
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}
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}
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#else
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/*
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* POSIX implementation...
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*/
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# include <sys/types.h>
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# include <dirent.h>
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/*
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* Types and structures...
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*/
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struct _cups_dir_s /**** Directory data structure ****/
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{
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char directory[1024]; /* Directory filename */
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DIR *dir; /* Directory file */
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cups_dentry_t entry; /* Directory entry */
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};
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/*
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* 'cupsDirClose()' - Close a directory.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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void
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cupsDirClose(cups_dir_t *dp) /* I - Directory pointer */
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{
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DEBUG_printf(("cupsDirClose(dp=%p)", (void *)dp));
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/*
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* Range check input...
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*/
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if (!dp)
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return;
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/*
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* Close the directory and free memory...
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*/
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closedir(dp->dir);
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free(dp);
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}
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/*
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* 'cupsDirOpen()' - Open a directory.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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cups_dir_t * /* O - Directory pointer or @code NULL@ if the directory could not be opened. */
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cupsDirOpen(const char *directory) /* I - Directory name */
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{
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cups_dir_t *dp; /* Directory */
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DEBUG_printf(("cupsDirOpen(directory=\"%s\")", directory));
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/*
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* Range check input...
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*/
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if (!directory)
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return (NULL);
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/*
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* Allocate memory for the directory structure...
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*/
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dp = (cups_dir_t *)calloc(1, sizeof(cups_dir_t));
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if (!dp)
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return (NULL);
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/*
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* Open the directory...
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*/
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dp->dir = opendir(directory);
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if (!dp->dir)
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{
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free(dp);
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return (NULL);
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}
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/*
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* Copy the directory name for later use...
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*/
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strlcpy(dp->directory, directory, sizeof(dp->directory));
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/*
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* Return the new directory structure...
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*/
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return (dp);
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}
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/*
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* 'cupsDirRead()' - Read the next directory entry.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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cups_dentry_t * /* O - Directory entry or @code NULL@ when there are no more */
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cupsDirRead(cups_dir_t *dp) /* I - Directory pointer */
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{
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struct dirent *entry; /* Pointer to entry */
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char filename[1024]; /* Full filename */
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DEBUG_printf(("2cupsDirRead(dp=%p)", (void *)dp));
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/*
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* Range check input...
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*/
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if (!dp)
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return (NULL);
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/*
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* Try reading an entry that is not "." or ".."...
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*/
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for (;;)
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{
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/*
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* Read the next entry...
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*/
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if ((entry = readdir(dp->dir)) == NULL)
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{
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DEBUG_puts("3cupsDirRead: readdir() returned a NULL pointer!");
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return (NULL);
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}
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DEBUG_printf(("4cupsDirRead: readdir() returned \"%s\"...", entry->d_name));
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/*
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* Skip "." and ".."...
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*/
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if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, ".."))
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continue;
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/*
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* Copy the name over and get the file information...
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*/
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strlcpy(dp->entry.filename, entry->d_name, sizeof(dp->entry.filename));
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snprintf(filename, sizeof(filename), "%s/%s", dp->directory, entry->d_name);
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if (stat(filename, &(dp->entry.fileinfo)))
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{
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DEBUG_printf(("3cupsDirRead: stat() failed for \"%s\" - %s...", filename,
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strerror(errno)));
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continue;
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}
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/*
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* Return the entry...
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*/
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return (&(dp->entry));
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}
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}
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/*
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* 'cupsDirRewind()' - Rewind to the start of the directory.
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*
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* @since CUPS 1.2/macOS 10.5@
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*/
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void
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cupsDirRewind(cups_dir_t *dp) /* I - Directory pointer */
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{
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DEBUG_printf(("cupsDirRewind(dp=%p)", (void *)dp));
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/*
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* Range check input...
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*/
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if (!dp)
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return;
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/*
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* Rewind the directory...
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*/
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rewinddir(dp->dir);
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}
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#endif /* _WIN32 */
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