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filestat.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Jim Winstead <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php.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"
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) /* {{{ */
#if defined(WINDOWS) /* {{{ */
{
ULARGE_INTEGER FreeBytesAvailableToCaller;
ULARGE_INTEGER TotalNumberOfBytes;
ULARGE_INTEGER TotalNumberOfFreeBytes;
PHP_WIN32_IOUTIL_INIT_W(path)
if (GetDiskFreeSpaceExW(pathw, &FreeBytesAvailableToCaller, &TotalNumberOfBytes, &TotalNumberOfFreeBytes) == 0) {
char *err = php_win_err();
php_error_docref(NULL, E_WARNING, "%s", err);
php_win_err_free(err);
PHP_WIN32_IOUTIL_CLEANUP_W()
return FAILURE;
}
/* i know - this is ugly, but i works <[email protected]> */
*space = TotalNumberOfBytes.HighPart * (double) (((zend_ulong)1) << 31) * 2.0 + TotalNumberOfBytes.LowPart;
PHP_WIN32_IOUTIL_CLEANUP_W()
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, 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, E_WARNING, "%s", strerror(errno));
return FAILURE;
}
bytestotal = (((double)buf.f_bsize) * ((double)buf.f_blocks));
#endif
*space = bytestotal;
return SUCCESS;
}
#endif
/* }}} */
/* }}} */
/* {{{ proto float|false disk_total_space(string path)
Get total disk space for filesystem that path is on */
PHP_FUNCTION(disk_total_space)
{
double bytestotal;
char *path;
size_t path_len;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_PATH(path, path_len)
ZEND_PARSE_PARAMETERS_END();
if (php_check_open_basedir(path)) {
RETURN_FALSE;
}
if (php_disk_total_space(path, &bytestotal) == SUCCESS) {
RETURN_DOUBLE(bytestotal);
}
RETURN_FALSE;
}
/* }}} */
static int php_disk_free_space(char *path, double *space) /* {{{ */
#if defined(WINDOWS) /* {{{ */
{
ULARGE_INTEGER FreeBytesAvailableToCaller;
ULARGE_INTEGER TotalNumberOfBytes;
ULARGE_INTEGER TotalNumberOfFreeBytes;
PHP_WIN32_IOUTIL_INIT_W(path)
if (GetDiskFreeSpaceExW(pathw, &FreeBytesAvailableToCaller, &TotalNumberOfBytes, &TotalNumberOfFreeBytes) == 0) {
char *err = php_win_err();
php_error_docref(NULL, E_WARNING, "%s", err);
php_win_err_free(err);
PHP_WIN32_IOUTIL_CLEANUP_W()
return FAILURE;
}
/* i know - this is ugly, but i works <[email protected]> */
*space = FreeBytesAvailableToCaller.HighPart * (double) (((zend_ulong)1) << 31) * 2.0 + FreeBytesAvailableToCaller.LowPart;
PHP_WIN32_IOUTIL_CLEANUP_W()
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, 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, E_WARNING, "%s", strerror(errno));
return FAILURE;
}
bytesfree = (((double)buf.f_bsize) * ((double)buf.f_bavail));
#endif
*space = bytesfree;
return SUCCESS;
}
#endif
/* }}} */
/* }}} */
/* {{{ proto float|false disk_free_space(string path)
Get free disk space for filesystem that path is on */
PHP_FUNCTION(disk_free_space)
{
double bytesfree;
char *path;
size_t path_len;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_PATH(path, path_len)
ZEND_PARSE_PARAMETERS_END();
if (php_check_open_basedir(path)) {
RETURN_FALSE;
}
if (php_disk_free_space(path, &bytesfree) == SUCCESS) {
RETURN_DOUBLE(bytesfree);
}
RETURN_FALSE;
}
/* }}} */
#ifndef PHP_WIN32
PHPAPI int php_get_gid_by_name(const char *name, gid_t *gid)
{
#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 FAILURE;
}
grbuf = emalloc(grbuflen);
if (getgrnam_r(name, &gr, grbuf, grbuflen, &retgrptr) != 0 || retgrptr == NULL) {
efree(grbuf);
return FAILURE;
}
efree(grbuf);
*gid = gr.gr_gid;
#else
struct group *gr = getgrnam(name);
if (!gr) {
return FAILURE;
}
*gid = gr->gr_gid;
#endif
return SUCCESS;
}
#endif
static void php_do_chgrp(INTERNAL_FUNCTION_PARAMETERS, int do_lchgrp) /* {{{ */
{
char *filename;
size_t filename_len;
zval *group;
#if !defined(WINDOWS)
gid_t gid;
int ret;
#endif
php_stream_wrapper *wrapper;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_PATH(filename, filename_len)
Z_PARAM_ZVAL(group)
ZEND_PARSE_PARAMETERS_END();
wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
if(wrapper && wrapper->wops->stream_metadata) {
int option;
void *value;
if (Z_TYPE_P(group) == IS_LONG) {
option = PHP_STREAM_META_GROUP;
value = &Z_LVAL_P(group);
} else if (Z_TYPE_P(group) == IS_STRING) {
option = PHP_STREAM_META_GROUP_NAME;
value = Z_STRVAL_P(group);
} else {
php_error_docref(NULL, E_WARNING, "parameter 2 should be string or int, %s given", zend_zval_type_name(group));
RETURN_FALSE;
}
if(wrapper->wops->stream_metadata(wrapper, filename, option, value, NULL)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
} else {
#if !defined(WINDOWS)
/* On Windows, we expect regular chgrp to fail silently by default */
php_error_docref(NULL, E_WARNING, "Can not call chgrp() for a non-standard stream");
#endif
RETURN_FALSE;
}
}
#if defined(WINDOWS)
/* We have no native chgrp on Windows, nothing left to do if stream doesn't have own implementation */
RETURN_FALSE;
#else
if (Z_TYPE_P(group) == IS_LONG) {
gid = (gid_t)Z_LVAL_P(group);
} else if (Z_TYPE_P(group) == IS_STRING) {
if(php_get_gid_by_name(Z_STRVAL_P(group), &gid) != SUCCESS) {
php_error_docref(NULL, E_WARNING, "Unable to find gid for %s", Z_STRVAL_P(group));
RETURN_FALSE;
}
} else {
php_error_docref(NULL, E_WARNING, "parameter 2 should be string or int, %s given", zend_zval_type_name(group));
RETURN_FALSE;
}
/* Check the basedir */
if (php_check_open_basedir(filename)) {
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, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
#endif
}
/* }}} */
/* {{{ proto bool chgrp(string filename, mixed group)
Change file group */
PHP_FUNCTION(chgrp)
{
php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ 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
/* }}} */
#ifndef PHP_WIN32
PHPAPI uid_t php_get_uid_by_name(const char *name, uid_t *uid)
{
#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 FAILURE;
}
pwbuf = emalloc(pwbuflen);
if (getpwnam_r(name, &pw, pwbuf, pwbuflen, &retpwptr) != 0 || retpwptr == NULL) {
efree(pwbuf);
return FAILURE;
}
efree(pwbuf);
*uid = pw.pw_uid;
#else
struct passwd *pw = getpwnam(name);
if (!pw) {
return FAILURE;
}
*uid = pw->pw_uid;
#endif
return SUCCESS;
}
#endif
static void php_do_chown(INTERNAL_FUNCTION_PARAMETERS, int do_lchown) /* {{{ */
{
char *filename;
size_t filename_len;
zval *user;
#if !defined(WINDOWS)
uid_t uid;
int ret;
#endif
php_stream_wrapper *wrapper;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_PATH(filename, filename_len)
Z_PARAM_ZVAL(user)
ZEND_PARSE_PARAMETERS_END();
wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
if(wrapper && wrapper->wops->stream_metadata) {
int option;
void *value;
if (Z_TYPE_P(user) == IS_LONG) {
option = PHP_STREAM_META_OWNER;
value = &Z_LVAL_P(user);
} else if (Z_TYPE_P(user) == IS_STRING) {
option = PHP_STREAM_META_OWNER_NAME;
value = Z_STRVAL_P(user);
} else {
php_error_docref(NULL, E_WARNING, "parameter 2 should be string or int, %s given", zend_zval_type_name(user));
RETURN_FALSE;
}
if(wrapper->wops->stream_metadata(wrapper, filename, option, value, NULL)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
} else {
#if !defined(WINDOWS)
/* On Windows, we expect regular chown to fail silently by default */
php_error_docref(NULL, E_WARNING, "Can not call chown() for a non-standard stream");
#endif
RETURN_FALSE;
}
}
#if defined(WINDOWS)
/* We have no native chown on Windows, nothing left to do if stream doesn't have own implementation */
RETURN_FALSE;
#else
if (Z_TYPE_P(user) == IS_LONG) {
uid = (uid_t)Z_LVAL_P(user);
} else if (Z_TYPE_P(user) == IS_STRING) {
if(php_get_uid_by_name(Z_STRVAL_P(user), &uid) != SUCCESS) {
php_error_docref(NULL, E_WARNING, "Unable to find uid for %s", Z_STRVAL_P(user));
RETURN_FALSE;
}
} else {
php_error_docref(NULL, E_WARNING, "parameter 2 should be string or int, %s given", zend_zval_type_name(user));
RETURN_FALSE;
}
/* Check the basedir */
if (php_check_open_basedir(filename)) {
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, E_WARNING, "%s", strerror(errno));
RETURN_FALSE;
}
RETURN_TRUE;
#endif
}
/* }}} */
/* {{{ proto bool chown(string filename, mixed user)
Change file owner */
PHP_FUNCTION(chown)
{
php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ 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
/* }}} */
/* {{{ proto bool chmod(string filename, int mode)
Change file mode */
PHP_FUNCTION(chmod)
{
char *filename;
size_t filename_len;
zend_long mode;
int ret;
mode_t imode;
php_stream_wrapper *wrapper;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_PATH(filename, filename_len)
Z_PARAM_LONG(mode)
ZEND_PARSE_PARAMETERS_END();
wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
if(wrapper && wrapper->wops->stream_metadata) {
if(wrapper->wops->stream_metadata(wrapper, filename, PHP_STREAM_META_ACCESS, &mode, NULL)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
} else {
php_error_docref(NULL, E_WARNING, "Can not call chmod() for a non-standard stream");
RETURN_FALSE;
}
}
/* Check the basedir */
if (php_check_open_basedir(filename)) {
RETURN_FALSE;
}
imode = (mode_t) mode;
ret = VCWD_CHMOD(filename, imode);
if (ret == -1) {
php_error_docref(NULL, 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;
size_t filename_len;
zend_long filetime = 0, fileatime = 0;
int ret, argc = ZEND_NUM_ARGS();
FILE *file;
struct utimbuf newtimebuf;
struct utimbuf *newtime = &newtimebuf;
php_stream_wrapper *wrapper;
ZEND_PARSE_PARAMETERS_START(1, 3)
Z_PARAM_PATH(filename, filename_len)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(filetime)
Z_PARAM_LONG(fileatime)
ZEND_PARSE_PARAMETERS_END();
if (!filename_len) {
RETURN_FALSE;
}
switch (argc) {
case 1:
newtime = NULL;
break;
case 2:
newtime->modtime = newtime->actime = filetime;
break;
case 3:
newtime->modtime = filetime;
newtime->actime = fileatime;
break;
default:
/* Never reached */
WRONG_PARAM_COUNT;
}
wrapper = php_stream_locate_url_wrapper(filename, NULL, 0);
if(wrapper != &php_plain_files_wrapper || strncasecmp("file://", filename, 7) == 0) {
if(wrapper && wrapper->wops->stream_metadata) {
if(wrapper->wops->stream_metadata(wrapper, filename, PHP_STREAM_META_TOUCH, newtime, NULL)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
} else {
php_stream *stream;
if(argc > 1) {
php_error_docref(NULL, E_WARNING, "Can not call touch() for a non-standard stream");
RETURN_FALSE;
}
stream = php_stream_open_wrapper_ex(filename, "c", REPORT_ERRORS, NULL, NULL);
if(stream != NULL) {
php_stream_close(stream);
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
}
/* Check the basedir */
if (php_check_open_basedir(filename)) {
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, 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, 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, size_t filename_len)
{
/* 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);
} else {
realpath_cache_clean();
}
}
}
/* }}} */
/* {{{ 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;
size_t filename_len = 0;
ZEND_PARSE_PARAMETERS_START(0, 2)
Z_PARAM_OPTIONAL
Z_PARAM_BOOL(clear_realpath_cache)
Z_PARAM_PATH(filename, filename_len)
ZEND_PARSE_PARAMETERS_END();
php_clear_stat_cache(clear_realpath_cache, filename, filename_len);
}
/* }}} */
#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, size_t filename_length, int type, zval *return_value)
{
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;
zend_stat_t *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"
};
const char *local;
php_stream_wrapper *wrapper;
if (!filename_length) {
RETURN_FALSE;
}
if ((wrapper = php_stream_locate_url_wrapper(filename, &local, 0)) == &php_plain_files_wrapper && php_check_open_basedir(local)) {
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 Occurred */
if (!IS_EXISTS_CHECK(type)) {
php_error_docref(NULL, E_WARNING, "%sstat failed for %s", IS_LINK_OPERATION(type) ? "L" : "", filename);
}
RETURN_FALSE;
}
stat_sb = &ssb.sb;
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);
}
}
}
if (IS_ABLE_CHECK(type) && getuid() == 0) {
/* root has special perms on plain_wrapper */
if (wrapper == &php_plain_files_wrapper) {
if (type == FS_IS_X) {
xmask = S_IXROOT;
} else {
RETURN_TRUE;
}
}
}
switch (type) {
case FS_PERMS:
RETURN_LONG((zend_long)ssb.sb.st_mode);
case FS_INODE:
RETURN_LONG((zend_long)ssb.sb.st_ino);
case FS_SIZE:
RETURN_LONG((zend_long)ssb.sb.st_size);
case FS_OWNER:
RETURN_LONG((zend_long)ssb.sb.st_uid);
case FS_GROUP:
RETURN_LONG((zend_long)ssb.sb.st_gid);
case FS_ATIME:
RETURN_LONG((zend_long)ssb.sb.st_atime);
case FS_MTIME:
RETURN_LONG((zend_long)ssb.sb.st_mtime);
case FS_CTIME:
RETURN_LONG((zend_long)ssb.sb.st_ctime);
case FS_TYPE:
if (S_ISLNK(ssb.sb.st_mode)) {
RETURN_STRING("link");
}
switch(ssb.sb.st_mode & S_IFMT) {
case S_IFIFO: RETURN_STRING("fifo");
case S_IFCHR: RETURN_STRING("char");
case S_IFDIR: RETURN_STRING("dir");
case S_IFBLK: RETURN_STRING("block");
case S_IFREG: RETURN_STRING("file");
#if defined(S_IFSOCK) && !defined(PHP_WIN32)
case S_IFSOCK: RETURN_STRING("socket");
#endif
}
php_error_docref(NULL, E_NOTICE, "Unknown file type (%d)", ssb.sb.st_mode&S_IFMT);
RETURN_STRING("unknown");
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);
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);
ZVAL_LONG(&stat_dev, stat_sb->st_dev);
ZVAL_LONG(&stat_ino, stat_sb->st_ino);
ZVAL_LONG(&stat_mode, stat_sb->st_mode);
ZVAL_LONG(&stat_nlink, stat_sb->st_nlink);
ZVAL_LONG(&stat_uid, stat_sb->st_uid);
ZVAL_LONG(&stat_gid, stat_sb->st_gid);
#ifdef HAVE_STRUCT_STAT_ST_RDEV
ZVAL_LONG(&stat_rdev, stat_sb->st_rdev);
#else
ZVAL_LONG(&stat_rdev, -1);
#endif
ZVAL_LONG(&stat_size, stat_sb->st_size);
ZVAL_LONG(&stat_atime, stat_sb->st_atime);
ZVAL_LONG(&stat_mtime, stat_sb->st_mtime);
ZVAL_LONG(&stat_ctime, stat_sb->st_ctime);
#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
ZVAL_LONG(&stat_blksize, stat_sb->st_blksize);
#else
ZVAL_LONG(&stat_blksize,-1);
#endif
#ifdef HAVE_STRUCT_STAT_ST_BLOCKS
ZVAL_LONG(&stat_blocks, stat_sb->st_blocks);
#else
ZVAL_LONG(&stat_blocks,-1);
#endif
/* Store numeric indexes in proper order */
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_dev);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_ino);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_mode);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_nlink);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_uid);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_gid);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_rdev);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_size);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_atime);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_mtime);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_ctime);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_blksize);
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), &stat_blocks);
/* Store string indexes referencing the same zval*/
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[0], strlen(stat_sb_names[0]), &stat_dev);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[1], strlen(stat_sb_names[1]), &stat_ino);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[2], strlen(stat_sb_names[2]), &stat_mode);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[3], strlen(stat_sb_names[3]), &stat_nlink);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[4], strlen(stat_sb_names[4]), &stat_uid);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[5], strlen(stat_sb_names[5]), &stat_gid);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[6], strlen(stat_sb_names[6]), &stat_rdev);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[7], strlen(stat_sb_names[7]), &stat_size);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[8], strlen(stat_sb_names[8]), &stat_atime);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[9], strlen(stat_sb_names[9]), &stat_mtime);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[10], strlen(stat_sb_names[10]), &stat_ctime);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[11], strlen(stat_sb_names[11]), &stat_blksize);
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[12], strlen(stat_sb_names[12]), &stat_blocks);
return;
}
php_error_docref(NULL, E_WARNING, "Didn't understand stat call");
RETURN_FALSE;
}
/* }}} */
/* another quickie macro to make defining similar functions easier */
/* {{{ FileFunction(name, funcnum) */
#define FileFunction(name, funcnum) \
ZEND_NAMED_FUNCTION(name) { \
char *filename; \
size_t filename_len; \
\
ZEND_PARSE_PARAMETERS_START(1, 1) \
Z_PARAM_PATH(filename, filename_len) \
ZEND_PARSE_PARAMETERS_END(); \
\
php_stat(filename, filename_len, funcnum, return_value); \
}
/* }}} */
/* {{{ proto int fileperms(string filename)
Get file permissions */
FileFunction(PHP_FN(fileperms), FS_PERMS)
/* }}} */