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filestat.c
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filestat.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2013 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jim Winstead <jimw@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "safe_mode.h"
#include "fopen_wrappers.h"
#include "php_globals.h"
#include <stdlib.h>
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <time.h>
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#if HAVE_SYS_VFS_H
# include <sys/vfs.h>
#endif
#ifdef OS2
# define INCL_DOS
# include <os2.h>
#endif
#if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
# include <sys/statvfs.h>
#elif defined(HAVE_SYS_STATFS_H) && defined(HAVE_STATFS)
# include <sys/statfs.h>
#elif defined(HAVE_SYS_MOUNT_H) && defined(HAVE_STATFS)
# include <sys/mount.h>
#endif
#if HAVE_PWD_H
# ifdef PHP_WIN32
# include "win32/pwd.h"
# else
# include <pwd.h>
# endif
#endif
#if HAVE_GRP_H
# ifdef PHP_WIN32
# include "win32/grp.h"
# else
# include <grp.h>
# endif
#endif
#if HAVE_UTIME
# ifdef PHP_WIN32
# include <sys/utime.h>
# else
# include <utime.h>
# endif
#endif
#ifdef PHP_WIN32
#include "win32/winutil.h"
#endif
#include "basic_functions.h"
#include "php_filestat.h"
#ifndef S_ISDIR
#define S_ISDIR(mode) (((mode)&S_IFMT) == S_IFDIR)
#endif
#ifndef S_ISREG
#define S_ISREG(mode) (((mode)&S_IFMT) == S_IFREG)
#endif
#ifndef S_ISLNK
#define S_ISLNK(mode) (((mode)&S_IFMT) == S_IFLNK)
#endif
#define S_IXROOT ( S_IXUSR | S_IXGRP | S_IXOTH )
PHP_RINIT_FUNCTION(filestat) /* {{{ */
{
BG(CurrentStatFile)=NULL;
BG(CurrentLStatFile)=NULL;
return SUCCESS;
}
/* }}} */
PHP_RSHUTDOWN_FUNCTION(filestat) /* {{{ */
{
if (BG(CurrentStatFile)) {
efree (BG(CurrentStatFile));
BG(CurrentStatFile) = NULL;
}
if (BG(CurrentLStatFile)) {
efree (BG(CurrentLStatFile));
BG(CurrentLStatFile) = NULL;
}
return SUCCESS;
}
/* }}} */
static int php_disk_total_space(char *path, double *space TSRMLS_DC) /* {{{ */
#if defined(WINDOWS) /* {{{ */
{
double bytestotal = 0;
HINSTANCE kernel32;
FARPROC gdfse;
typedef BOOL (WINAPI *gdfse_func)(LPCTSTR, PULARGE_INTEGER, PULARGE_INTEGER, PULARGE_INTEGER);
gdfse_func func;
/* These are used by GetDiskFreeSpaceEx, if available. */
ULARGE_INTEGER FreeBytesAvailableToCaller;
ULARGE_INTEGER TotalNumberOfBytes;
ULARGE_INTEGER TotalNumberOfFreeBytes;
/* These are used by GetDiskFreeSpace otherwise. */
DWORD SectorsPerCluster;
DWORD BytesPerSector;
DWORD NumberOfFreeClusters;
DWORD TotalNumberOfClusters;
/* GetDiskFreeSpaceEx is only available in NT and Win95 post-OSR2,
so we have to jump through some hoops to see if the function
exists. */
kernel32 = LoadLibrary("kernel32.dll");
if (kernel32) {
gdfse = GetProcAddress(kernel32, "GetDiskFreeSpaceExA");
/* It's available, so we can call it. */
if (gdfse) {
func = (gdfse_func)gdfse;
if (func(path,
&FreeBytesAvailableToCaller,
&TotalNumberOfBytes,
&TotalNumberOfFreeBytes) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", php_win_err());
return FAILURE;
}
/* i know - this is ugly, but i works <thies@thieso.net> */
bytestotal = TotalNumberOfBytes.HighPart *
(double) (((unsigned long)1) << 31) * 2.0 +
TotalNumberOfBytes.LowPart;
} else { /* If it's not available, we just use GetDiskFreeSpace */
if (GetDiskFreeSpace(path,
&SectorsPerCluster, &BytesPerSector,
&NumberOfFreeClusters, &TotalNumberOfClusters) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", php_win_err());
return FAILURE;
}
bytestotal = (double)TotalNumberOfClusters * (double)SectorsPerCluster * (double)BytesPerSector;
}
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to load kernel32.dll");
return FAILURE;
}
*space = bytestotal;
return SUCCESS;
}
/* }}} */
#elif defined(OS2) /* {{{ */
{
double bytestotal = 0;
FSALLOCATE fsinfo;
char drive = path[0] & 95;
if (DosQueryFSInfo( drive ? drive - 64 : 0, FSIL_ALLOC, &fsinfo, sizeof( fsinfo ) ) == 0) {
bytestotal = (double)fsinfo.cbSector * fsinfo.cSectorUnit * fsinfo.cUnit;
*space = bytestotal;
return SUCCESS;
}
return FAILURE;
}
/* }}} */
#else /* {{{ if !defined(OS2) && !defined(WINDOWS) */
{
double bytestotal = 0;
#if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
struct statvfs buf;
#elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
struct statfs buf;
#endif
#if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
if (statvfs(path, &buf)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
return FAILURE;
}
if (buf.f_frsize) {
bytestotal = (((double)buf.f_blocks) * ((double)buf.f_frsize));
} else {
bytestotal = (((double)buf.f_blocks) * ((double)buf.f_bsize));
}
#elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
if (statfs(path, &buf)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
return FAILURE;
}
bytestotal = (((double)buf.f_bsize) * ((double)buf.f_blocks));
#endif
*space = bytestotal;
return SUCCESS;
}
#endif
/* }}} */
/* }}} */
/* {{{ proto float disk_total_space(string path)
Get total disk space for filesystem that path is on */
PHP_FUNCTION(disk_total_space)
{
double bytestotal;
char *path;
int path_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &path, &path_len) == FAILURE) {
return;
}
if (php_check_open_basedir(path TSRMLS_CC)) {
RETURN_FALSE;
}
if (php_disk_total_space(path, &bytestotal TSRMLS_CC) == SUCCESS) {
RETURN_DOUBLE(bytestotal);
}
RETURN_FALSE;
}
/* }}} */
static int php_disk_free_space(char *path, double *space TSRMLS_DC) /* {{{ */
#if defined(WINDOWS) /* {{{ */
{
double bytesfree = 0;
HINSTANCE kernel32;
FARPROC gdfse;
typedef BOOL (WINAPI *gdfse_func)(LPCTSTR, PULARGE_INTEGER, PULARGE_INTEGER, PULARGE_INTEGER);
gdfse_func func;
/* These are used by GetDiskFreeSpaceEx, if available. */
ULARGE_INTEGER FreeBytesAvailableToCaller;
ULARGE_INTEGER TotalNumberOfBytes;
ULARGE_INTEGER TotalNumberOfFreeBytes;
/* These are used by GetDiskFreeSpace otherwise. */
DWORD SectorsPerCluster;
DWORD BytesPerSector;
DWORD NumberOfFreeClusters;
DWORD TotalNumberOfClusters;
/* GetDiskFreeSpaceEx is only available in NT and Win95 post-OSR2,
so we have to jump through some hoops to see if the function
exists. */
kernel32 = LoadLibrary("kernel32.dll");
if (kernel32) {
gdfse = GetProcAddress(kernel32, "GetDiskFreeSpaceExA");
/* It's available, so we can call it. */
if (gdfse) {
func = (gdfse_func)gdfse;
if (func(path,
&FreeBytesAvailableToCaller,
&TotalNumberOfBytes,
&TotalNumberOfFreeBytes) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", php_win_err());
return FAILURE;
}
/* i know - this is ugly, but i works <thies@thieso.net> */
bytesfree = FreeBytesAvailableToCaller.HighPart *
(double) (((unsigned long)1) << 31) * 2.0 +
FreeBytesAvailableToCaller.LowPart;
} else { /* If it's not available, we just use GetDiskFreeSpace */
if (GetDiskFreeSpace(path,
&SectorsPerCluster, &BytesPerSector,
&NumberOfFreeClusters, &TotalNumberOfClusters) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", php_win_err());
return FAILURE;
}
bytesfree = (double)NumberOfFreeClusters * (double)SectorsPerCluster * (double)BytesPerSector;
}
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to load kernel32.dll");
return FAILURE;
}
*space = bytesfree;
return SUCCESS;
}
/* }}} */
#elif defined(OS2) /* {{{ */
{
double bytesfree = 0;
FSALLOCATE fsinfo;
char drive = path[0] & 95;
if (DosQueryFSInfo( drive ? drive - 64 : 0, FSIL_ALLOC, &fsinfo, sizeof( fsinfo ) ) == 0) {
bytesfree = (double)fsinfo.cbSector * fsinfo.cSectorUnit * fsinfo.cUnitAvail;
*space = bytesfree;
return SUCCESS;
}
return FAILURE;
}
/* }}} */
#else /* {{{ if !defined(OS2) && !defined(WINDOWS) */
{
double bytesfree = 0;
#if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
struct statvfs buf;
#elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
struct statfs buf;
#endif
#if defined(HAVE_SYS_STATVFS_H) && defined(HAVE_STATVFS)
if (statvfs(path, &buf)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
return FAILURE;
}
if (buf.f_frsize) {
bytesfree = (((double)buf.f_bavail) * ((double)buf.f_frsize));
} else {
bytesfree = (((double)buf.f_bavail) * ((double)buf.f_bsize));
}
#elif (defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_MOUNT_H)) && defined(HAVE_STATFS)
if (statfs(path, &buf)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
return FAILURE;
}
#ifdef NETWARE
bytesfree = (((double)buf.f_bsize) * ((double)buf.f_bfree));
#else
bytesfree = (((double)buf.f_bsize) * ((double)buf.f_bavail));
#endif
#endif
*space = bytesfree;
return SUCCESS;
}
#endif
/* }}} */
/* }}} */
/* {{{ proto float disk_free_space(string path)
Get free disk space for filesystem that path is on */
PHP_FUNCTION(disk_free_space)
{
double bytesfree;
char *path;
int path_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &path, &path_len) == FAILURE) {
return;
}
if (php_check_open_basedir(path TSRMLS_CC)) {
RETURN_FALSE;
}
if (strlen(path) != path_len) {
RETURN_FALSE;
}
if (php_disk_free_space(path, &bytesfree TSRMLS_CC) == SUCCESS) {
RETURN_DOUBLE(bytesfree);
}
RETURN_FALSE;
}
/* }}} */
#if !defined(WINDOWS) && !defined(NETWARE)
static void php_do_chgrp(INTERNAL_FUNCTION_PARAMETERS, int do_lchgrp) /* {{{ */
{
char *filename;
int filename_len;
zval *group;
gid_t gid;
int ret;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz/", &filename, &filename_len, &group) == FAILURE) {
RETURN_FALSE;
}
if (strlen(filename) != filename_len) {
RETURN_FALSE;
}
if (Z_TYPE_P(group) == IS_LONG) {
gid = (gid_t)Z_LVAL_P(group);
} else if (Z_TYPE_P(group) == IS_STRING) {
#if defined(ZTS) && defined(HAVE_GETGRNAM_R) && defined(_SC_GETGR_R_SIZE_MAX)
struct group gr;
struct group *retgrptr;
long grbuflen = sysconf(_SC_GETGR_R_SIZE_MAX);
char *grbuf;
if (grbuflen < 1) {
RETURN_FALSE;
}
grbuf = emalloc(grbuflen);
if (getgrnam_r(Z_STRVAL_P(group), &gr, grbuf, grbuflen, &retgrptr) != 0 || retgrptr == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find gid for %s", Z_STRVAL_P(group));
efree(grbuf);
RETURN_FALSE;
}
efree(grbuf);
gid = gr.gr_gid;
#else
struct group *gr = getgrnam(Z_STRVAL_P(group));
if (!gr) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find gid for %s", Z_STRVAL_P(group));
RETURN_FALSE;
}
gid = gr->gr_gid;
#endif
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "parameter 2 should be string or integer, %s given", zend_zval_type_name(group));
RETURN_FALSE;
}
if (PG(safe_mode) &&(!php_checkuid(filename, NULL, CHECKUID_ALLOW_FILE_NOT_EXISTS))) {
RETURN_FALSE;
}
/* Check the basedir */
if (php_check_open_basedir(filename TSRMLS_CC)) {
RETURN_FALSE;
}
if (do_lchgrp) {
#if HAVE_LCHOWN
ret = VCWD_LCHOWN(filename, -1, gid);
#endif
} else {
ret = VCWD_CHOWN(filename, -1, gid);
}
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#endif
#ifndef NETWARE
/* {{{ proto bool chgrp(string filename, mixed group)
Change file group */
PHP_FUNCTION(chgrp)
{
#if !defined(WINDOWS)
php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ proto bool lchgrp(string filename, mixed group)
Change symlink group */
#if HAVE_LCHOWN
PHP_FUNCTION(lchgrp)
{
# if !defined(WINDOWS)
php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
# else
RETURN_FALSE;
# endif
}
#endif
/* }}} */
#endif /* !NETWARE */
#if !defined(WINDOWS) && !defined(NETWARE)
static void php_do_chown(INTERNAL_FUNCTION_PARAMETERS, int do_lchown) /* {{{ */
{
char *filename;
int filename_len;
zval *user;
uid_t uid;
int ret;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sz/", &filename, &filename_len, &user) == FAILURE) {
return;
}
if (strlen(filename) != filename_len) {
RETURN_FALSE;
}
if (Z_TYPE_P(user) == IS_LONG) {
uid = (uid_t)Z_LVAL_P(user);
} else if (Z_TYPE_P(user) == IS_STRING) {
#if defined(ZTS) && defined(_SC_GETPW_R_SIZE_MAX) && defined(HAVE_GETPWNAM_R)
struct passwd pw;
struct passwd *retpwptr = NULL;
long pwbuflen = sysconf(_SC_GETPW_R_SIZE_MAX);
char *pwbuf;
if (pwbuflen < 1) {
RETURN_FALSE;
}
pwbuf = emalloc(pwbuflen);
if (getpwnam_r(Z_STRVAL_P(user), &pw, pwbuf, pwbuflen, &retpwptr) != 0 || retpwptr == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find uid for %s", Z_STRVAL_P(user));
efree(pwbuf);
RETURN_FALSE;
}
efree(pwbuf);
uid = pw.pw_uid;
#else
struct passwd *pw = getpwnam(Z_STRVAL_P(user));
if (!pw) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to find uid for %s", Z_STRVAL_P(user));
RETURN_FALSE;
}
uid = pw->pw_uid;
#endif
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "parameter 2 should be string or integer, %s given", zend_zval_type_name(user));
RETURN_FALSE;
}
if (PG(safe_mode) && (!php_checkuid(filename, NULL, CHECKUID_ALLOW_FILE_NOT_EXISTS))) {
RETURN_FALSE;
}
/* Check the basedir */
if (php_check_open_basedir(filename TSRMLS_CC)) {
RETURN_FALSE;
}
if (do_lchown) {
#if HAVE_LCHOWN
ret = VCWD_LCHOWN(filename, uid, -1);
#endif
} else {
ret = VCWD_CHOWN(filename, uid, -1);
}
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
}
/* }}} */
#endif
#ifndef NETWARE
/* {{{ proto bool chown (string filename, mixed user)
Change file owner */
PHP_FUNCTION(chown)
{
#if !defined(WINDOWS)
RETVAL_TRUE;
php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
#else
RETURN_FALSE;
#endif
}
/* }}} */
/* {{{ proto bool chown (string filename, mixed user)
Change file owner */
#if HAVE_LCHOWN
PHP_FUNCTION(lchown)
{
# if !defined(WINDOWS)
RETVAL_TRUE;
php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
# else
RETURN_FALSE;
# endif
}
#endif
/* }}} */
#endif /* !NETWARE */
/* {{{ proto bool chmod(string filename, int mode)
Change file mode */
PHP_FUNCTION(chmod)
{
char *filename;
int filename_len;
long mode;
int ret;
mode_t imode;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sl", &filename, &filename_len, &mode) == FAILURE) {
return;
}
if (PG(safe_mode) &&(!php_checkuid(filename, NULL, CHECKUID_ALLOW_FILE_NOT_EXISTS))) {
RETURN_FALSE;
}
if (strlen(filename) != filename_len) {
RETURN_FALSE;
}
/* Check the basedir */
if (php_check_open_basedir(filename TSRMLS_CC)) {
RETURN_FALSE;
}
imode = (mode_t) mode;
/* In safe mode, do not allow to setuid files.
* Setuiding files could allow users to gain privileges
* that safe mode doesn't give them. */
if (PG(safe_mode)) {
php_stream_statbuf ssb;
if (php_stream_stat_path_ex(filename, 0, &ssb, NULL)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "stat failed for %s", filename);
RETURN_FALSE;
}
if ((imode & 04000) != 0 && (ssb.sb.st_mode & 04000) == 0) {
imode ^= 04000;
}
if ((imode & 02000) != 0 && (ssb.sb.st_mode & 02000) == 0) {
imode ^= 02000;
}
if ((imode & 01000) != 0 && (ssb.sb.st_mode & 01000) == 0) {
imode ^= 01000;
}
}
ret = VCWD_CHMOD(filename, imode);
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#if HAVE_UTIME
/* {{{ proto bool touch(string filename [, int time [, int atime]])
Set modification time of file */
PHP_FUNCTION(touch)
{
char *filename;
int filename_len;
long filetime = 0, fileatime = 0;
int ret, argc = ZEND_NUM_ARGS();
FILE *file;
struct utimbuf newtimebuf;
struct utimbuf *newtime = &newtimebuf;
if (zend_parse_parameters(argc TSRMLS_CC, "s|ll", &filename, &filename_len, &filetime, &fileatime) == FAILURE) {
return;
}
if (strlen(filename) != filename_len) {
RETURN_FALSE;
}
switch (argc) {
case 1:
#ifdef HAVE_UTIME_NULL
newtime = NULL;
#else
newtime->modtime = newtime->actime = time(NULL);
#endif
break;
case 2:
newtime->modtime = newtime->actime = filetime;
break;
case 3:
newtime->modtime = filetime;
newtime->actime = fileatime;
break;
default:
/* Never reached */
WRONG_PARAM_COUNT;
}
/* Safe-mode */
if (PG(safe_mode) && (!php_checkuid(filename, NULL, CHECKUID_CHECK_FILE_AND_DIR))) {
RETURN_FALSE;
}
/* Check the basedir */
if (php_check_open_basedir(filename TSRMLS_CC)) {
RETURN_FALSE;
}
/* create the file if it doesn't exist already */
if (VCWD_ACCESS(filename, F_OK) != 0) {
file = VCWD_FOPEN(filename, "w");
if (file == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to create file %s because %s", filename, strerror(errno));
RETURN_FALSE;
}
fclose(file);
}
ret = VCWD_UTIME(filename, newtime);
if (ret == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Utime failed: %s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
#endif
/* {{{ php_clear_stat_cache()
*/
PHPAPI void php_clear_stat_cache(zend_bool clear_realpath_cache, const char *filename, int filename_len TSRMLS_DC)
{
/* always clear CurrentStatFile and CurrentLStatFile even if filename is not NULL
* as it may contain outdated data (e.g. "nlink" for a directory when deleting a file
* in this directory, as shown by lstat_stat_variation9.phpt) */
if (BG(CurrentStatFile)) {
efree(BG(CurrentStatFile));
BG(CurrentStatFile) = NULL;
}
if (BG(CurrentLStatFile)) {
efree(BG(CurrentLStatFile));
BG(CurrentLStatFile) = NULL;
}
if (clear_realpath_cache) {
if (filename != NULL) {
realpath_cache_del(filename, filename_len TSRMLS_CC);
} else {
realpath_cache_clean(TSRMLS_C);
}
}
}
/* }}} */
/* {{{ proto void clearstatcache([bool clear_realpath_cache[, string filename]])
Clear file stat cache */
PHP_FUNCTION(clearstatcache)
{
zend_bool clear_realpath_cache = 0;
char *filename = NULL;
int filename_len = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|bs", &clear_realpath_cache, &filename, &filename_len) == FAILURE) {
return;
}
php_clear_stat_cache(clear_realpath_cache, filename, filename_len TSRMLS_CC);
}
/* }}} */
#define IS_LINK_OPERATION(__t) ((__t) == FS_TYPE || (__t) == FS_IS_LINK || (__t) == FS_LSTAT)
#define IS_EXISTS_CHECK(__t) ((__t) == FS_EXISTS || (__t) == FS_IS_W || (__t) == FS_IS_R || (__t) == FS_IS_X || (__t) == FS_IS_FILE || (__t) == FS_IS_DIR || (__t) == FS_IS_LINK)
#define IS_ABLE_CHECK(__t) ((__t) == FS_IS_R || (__t) == FS_IS_W || (__t) == FS_IS_X)
#define IS_ACCESS_CHECK(__t) (IS_ABLE_CHECK(type) || (__t) == FS_EXISTS)
/* {{{ php_stat
*/
PHPAPI void php_stat(const char *filename, php_stat_len filename_length, int type, zval *return_value TSRMLS_DC)
{
zval *stat_dev, *stat_ino, *stat_mode, *stat_nlink, *stat_uid, *stat_gid, *stat_rdev,
*stat_size, *stat_atime, *stat_mtime, *stat_ctime, *stat_blksize, *stat_blocks;
struct stat *stat_sb;
php_stream_statbuf ssb;
int flags = 0, rmask=S_IROTH, wmask=S_IWOTH, xmask=S_IXOTH; /* access rights defaults to other */
char *stat_sb_names[13] = {
"dev", "ino", "mode", "nlink", "uid", "gid", "rdev",
"size", "atime", "mtime", "ctime", "blksize", "blocks"
};
char *local;
php_stream_wrapper *wrapper;
char safe_mode_buf[MAXPATHLEN];
if (!filename_length) {
RETURN_FALSE;
}
if (strlen(filename) != filename_length) {
RETURN_FALSE;
}
if ((wrapper = php_stream_locate_url_wrapper(filename, &local, 0 TSRMLS_CC)) == &php_plain_files_wrapper) {
if (php_check_open_basedir(local TSRMLS_CC)) {
RETURN_FALSE;
} else if (PG(safe_mode)) {
if (type == FS_IS_X) {
if (strstr(local, "..")) {
RETURN_FALSE;
} else {
char *b = strrchr(local, PHP_DIR_SEPARATOR);
snprintf(safe_mode_buf, MAXPATHLEN, "%s%s%s", PG(safe_mode_exec_dir), (b ? "" : "/"), (b ? b : local));
local = (char *)&safe_mode_buf;
}
} else if (!php_checkuid_ex(local, NULL, CHECKUID_ALLOW_FILE_NOT_EXISTS, CHECKUID_NO_ERRORS)) {
RETURN_FALSE;
}
}
}
if (IS_ACCESS_CHECK(type)) {
if (wrapper == &php_plain_files_wrapper) {
switch (type) {
#ifdef F_OK
case FS_EXISTS:
RETURN_BOOL(VCWD_ACCESS(local, F_OK) == 0);
break;
#endif
#ifdef W_OK
case FS_IS_W:
RETURN_BOOL(VCWD_ACCESS(local, W_OK) == 0);
break;
#endif
#ifdef R_OK
case FS_IS_R:
RETURN_BOOL(VCWD_ACCESS(local, R_OK) == 0);
break;
#endif
#ifdef X_OK
case FS_IS_X:
RETURN_BOOL(VCWD_ACCESS(local, X_OK) == 0);
break;
#endif
}
}
}
if (IS_LINK_OPERATION(type)) {
flags |= PHP_STREAM_URL_STAT_LINK;
}
if (IS_EXISTS_CHECK(type)) {
flags |= PHP_STREAM_URL_STAT_QUIET;
}
if (php_stream_stat_path_ex((char *)filename, flags, &ssb, NULL)) {
/* Error Occured */
if (!IS_EXISTS_CHECK(type)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%sstat failed for %s", IS_LINK_OPERATION(type) ? "L" : "", filename);
}
RETURN_FALSE;
}
stat_sb = &ssb.sb;
#ifndef NETWARE
if (type >= FS_IS_W && type <= FS_IS_X) {
if(ssb.sb.st_uid==getuid()) {
rmask=S_IRUSR;
wmask=S_IWUSR;
xmask=S_IXUSR;
} else if(ssb.sb.st_gid==getgid()) {
rmask=S_IRGRP;
wmask=S_IWGRP;
xmask=S_IXGRP;
} else {
int groups, n, i;
gid_t *gids;
groups = getgroups(0, NULL);
if(groups > 0) {
gids=(gid_t *)safe_emalloc(groups, sizeof(gid_t), 0);
n=getgroups(groups, gids);
for(i=0;i<n;i++){
if(ssb.sb.st_gid==gids[i]) {
rmask=S_IRGRP;
wmask=S_IWGRP;
xmask=S_IXGRP;
break;
}
}
efree(gids);
}
}
}
#endif
#ifndef NETWARE
if (IS_ABLE_CHECK(type) && getuid() == 0) {
/* root has special perms on plain_wrapper
But we don't know about root under Netware */
if (wrapper == &php_plain_files_wrapper) {
if (type == FS_IS_X) {
xmask = S_IXROOT;
} else {
RETURN_TRUE;
}
}
}
#endif
switch (type) {
case FS_PERMS:
RETURN_LONG((long)ssb.sb.st_mode);
case FS_INODE:
RETURN_LONG((long)ssb.sb.st_ino);
case FS_SIZE:
RETURN_LONG((long)ssb.sb.st_size);
case FS_OWNER:
RETURN_LONG((long)ssb.sb.st_uid);
case FS_GROUP:
RETURN_LONG((long)ssb.sb.st_gid);
case FS_ATIME:
RETURN_LONG((long)ssb.sb.st_atime);
case FS_MTIME:
RETURN_LONG((long)ssb.sb.st_mtime);
case FS_CTIME:
RETURN_LONG((long)ssb.sb.st_ctime);
case FS_TYPE:
if (S_ISLNK(ssb.sb.st_mode)) {
RETURN_STRING("link", 1);
}
switch(ssb.sb.st_mode & S_IFMT) {
case S_IFIFO: RETURN_STRING("fifo", 1);
case S_IFCHR: RETURN_STRING("char", 1);
case S_IFDIR: RETURN_STRING("dir", 1);
case S_IFBLK: RETURN_STRING("block", 1);
case S_IFREG: RETURN_STRING("file", 1);
#if defined(S_IFSOCK) && !defined(ZEND_WIN32)&&!defined(__BEOS__)
case S_IFSOCK: RETURN_STRING("socket", 1);
#endif
}
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Unknown file type (%d)", ssb.sb.st_mode&S_IFMT);
RETURN_STRING("unknown", 1);
case FS_IS_W:
RETURN_BOOL((ssb.sb.st_mode & wmask) != 0);
case FS_IS_R:
RETURN_BOOL((ssb.sb.st_mode&rmask)!=0);
case FS_IS_X:
RETURN_BOOL((ssb.sb.st_mode&xmask)!=0 && !S_ISDIR(ssb.sb.st_mode));
case FS_IS_FILE:
RETURN_BOOL(S_ISREG(ssb.sb.st_mode));
case FS_IS_DIR:
RETURN_BOOL(S_ISDIR(ssb.sb.st_mode));
case FS_IS_LINK:
RETURN_BOOL(S_ISLNK(ssb.sb.st_mode));
case FS_EXISTS:
RETURN_TRUE; /* the false case was done earlier */
case FS_LSTAT:
/* FALLTHROUGH */
case FS_STAT:
array_init(return_value);
MAKE_LONG_ZVAL_INCREF(stat_dev, stat_sb->st_dev);
MAKE_LONG_ZVAL_INCREF(stat_ino, stat_sb->st_ino);
MAKE_LONG_ZVAL_INCREF(stat_mode, stat_sb->st_mode);
MAKE_LONG_ZVAL_INCREF(stat_nlink, stat_sb->st_nlink);
MAKE_LONG_ZVAL_INCREF(stat_uid, stat_sb->st_uid);
MAKE_LONG_ZVAL_INCREF(stat_gid, stat_sb->st_gid);
#ifdef HAVE_ST_RDEV
MAKE_LONG_ZVAL_INCREF(stat_rdev, stat_sb->st_rdev);
#else
MAKE_LONG_ZVAL_INCREF(stat_rdev, -1);
#endif
MAKE_LONG_ZVAL_INCREF(stat_size, stat_sb->st_size);
MAKE_LONG_ZVAL_INCREF(stat_atime, stat_sb->st_atime);
MAKE_LONG_ZVAL_INCREF(stat_mtime, stat_sb->st_mtime);
MAKE_LONG_ZVAL_INCREF(stat_ctime, stat_sb->st_ctime);
#ifdef HAVE_ST_BLKSIZE
MAKE_LONG_ZVAL_INCREF(stat_blksize, stat_sb->st_blksize);
#else
MAKE_LONG_ZVAL_INCREF(stat_blksize,-1);
#endif
#ifdef HAVE_ST_BLOCKS
MAKE_LONG_ZVAL_INCREF(stat_blocks, stat_sb->st_blocks);
#else
MAKE_LONG_ZVAL_INCREF(stat_blocks,-1);
#endif
/* Store numeric indexes in propper order */
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_dev, sizeof(zval *), NULL);
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_ino, sizeof(zval *), NULL);
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_mode, sizeof(zval *), NULL);
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_nlink, sizeof(zval *), NULL);
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_uid, sizeof(zval *), NULL);
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_gid, sizeof(zval *), NULL);
zend_hash_next_index_insert(HASH_OF(return_value), (void *)&stat_rdev, sizeof(zval *), NULL);