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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: |
| https://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>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#ifdef HAVE_SYS_VFS_H
# include <sys/vfs.h>
#endif
#if defined(__APPLE__)
/*
Apple statvfs has an interger overflow in libc copying to statvfs.
cvt_statfs_to_statvfs(struct statfs *from, struct statvfs *to) {
to->f_blocks = (fsblkcnt_t)from->f_blocks;
*/
# undef HAVE_SYS_STATVFS_H
# undef HAVE_STATVFS
#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
#ifdef HAVE_PWD_H
# ifdef PHP_WIN32
# include "win32/pwd.h"
# else
# include <pwd.h>
# endif
#endif
#ifdef HAVE_GRP_H
# include <grp.h>
#endif
#ifdef 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)) {
zend_string_release(BG(CurrentStatFile));
BG(CurrentStatFile) = NULL;
}
if (BG(CurrentLStatFile)) {
zend_string_release(BG(CurrentLStatFile));
BG(CurrentLStatFile) = NULL;
}
return SUCCESS;
}
/* }}} */
static zend_result php_disk_total_space(char *path, double *space) /* {{{ */
#if defined(PHP_WIN32) /* {{{ */
{
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;
}
/* }}} */
#else /* {{{ if !defined(PHP_WIN32) */
{
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
/* }}} */
/* }}} */
/* {{{ Get total disk space for filesystem that path is on */
PHP_FUNCTION(disk_total_space)
{
double bytestotal;
char *path, fullpath[MAXPATHLEN];
size_t path_len;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_PATH(path, path_len)
ZEND_PARSE_PARAMETERS_END();
if (!expand_filepath(path, fullpath)) {
RETURN_FALSE;
}
if (php_check_open_basedir(fullpath)) {
RETURN_FALSE;
}
if (php_disk_total_space(fullpath, &bytestotal) == SUCCESS) {
RETURN_DOUBLE(bytestotal);
}
RETURN_FALSE;
}
/* }}} */
static zend_result php_disk_free_space(char *path, double *space) /* {{{ */
#if defined(PHP_WIN32) /* {{{ */
{
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;
}
*space = FreeBytesAvailableToCaller.HighPart * (double) (1ULL << 32) + FreeBytesAvailableToCaller.LowPart;
PHP_WIN32_IOUTIL_CLEANUP_W()
return SUCCESS;
}
#else /* {{{ if !defined(PHP_WIN32) */
{
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
/* }}} */
/* }}} */
/* {{{ Get free disk space for filesystem that path is on */
PHP_FUNCTION(disk_free_space)
{
double bytesfree;
char *path, fullpath[MAXPATHLEN];
size_t path_len;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_PATH(path, path_len)
ZEND_PARSE_PARAMETERS_END();
if (!expand_filepath(path, fullpath)) {
RETURN_FALSE;
}
if (php_check_open_basedir(fullpath)) {
RETURN_FALSE;
}
if (php_disk_free_space(fullpath, &bytesfree) == SUCCESS) {
RETURN_DOUBLE(bytesfree);
}
RETURN_FALSE;
}
/* }}} */
#ifndef PHP_WIN32
PHPAPI zend_result 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;
int err;
if (grbuflen < 1) {
grbuflen = 1024;
}
# if ZEND_DEBUG
/* Test retry logic */
grbuflen = 1;
# endif
grbuf = emalloc(grbuflen);
try_again:
err = getgrnam_r(name, &gr, grbuf, grbuflen, &retgrptr);
if (err != 0 || retgrptr == NULL) {
if (err == ERANGE) {
grbuflen *= 2;
grbuf = erealloc(grbuf, grbuflen);
goto try_again;
}
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;
zend_string *group_str;
zend_long group_long;
#if !defined(PHP_WIN32)
gid_t gid;
int ret;
#endif
php_stream_wrapper *wrapper;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_PATH(filename, filename_len)
Z_PARAM_STR_OR_LONG(group_str, group_long)
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 (group_str) {
option = PHP_STREAM_META_GROUP_NAME;
value = ZSTR_VAL(group_str);
} else {
option = PHP_STREAM_META_GROUP;
value = &group_long;
}
if(wrapper->wops->stream_metadata(wrapper, filename, option, value, NULL)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
} else {
#ifndef PHP_WIN32
/* On Windows, we expect regular chgrp to fail silently by default */
php_error_docref(NULL, E_WARNING, "Cannot call chgrp() for a non-standard stream");
#endif
RETURN_FALSE;
}
}
#ifdef PHP_WIN32
/* We have no native chgrp on Windows, nothing left to do if stream doesn't have own implementation */
RETURN_FALSE;
#else
if (group_str) {
if (php_get_gid_by_name(ZSTR_VAL(group_str), &gid) != SUCCESS) {
php_error_docref(NULL, E_WARNING, "Unable to find gid for %s", ZSTR_VAL(group_str));
RETURN_FALSE;
}
} else {
gid = (gid_t) group_long;
}
/* Check the basedir */
if (php_check_open_basedir(filename)) {
RETURN_FALSE;
}
if (do_lchgrp) {
#ifdef 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
}
/* }}} */
/* {{{ Change file group */
PHP_FUNCTION(chgrp)
{
php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Change symlink group */
#ifdef HAVE_LCHOWN
PHP_FUNCTION(lchgrp)
{
php_do_chgrp(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
#endif
/* }}} */
#ifndef PHP_WIN32
PHPAPI zend_result 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;
int err;
if (pwbuflen < 1) {
pwbuflen = 1024;
}
# if ZEND_DEBUG
/* Test retry logic */
pwbuflen = 1;
# endif
pwbuf = emalloc(pwbuflen);
try_again:
err = getpwnam_r(name, &pw, pwbuf, pwbuflen, &retpwptr);
if (err != 0 || retpwptr == NULL) {
if (err == EAGAIN) {
pwbuflen *= 2;
pwbuf = erealloc(pwbuf, pwbuflen);
goto try_again;
}
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;
zend_string *user_str;
zend_long user_long;
#if !defined(PHP_WIN32)
uid_t uid;
int ret;
#endif
php_stream_wrapper *wrapper;
ZEND_PARSE_PARAMETERS_START(2, 2)
Z_PARAM_PATH(filename, filename_len)
Z_PARAM_STR_OR_LONG(user_str, user_long)
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 (user_str) {
option = PHP_STREAM_META_OWNER_NAME;
value = ZSTR_VAL(user_str);
} else {
option = PHP_STREAM_META_OWNER;
value = &user_long;
}
if(wrapper->wops->stream_metadata(wrapper, filename, option, value, NULL)) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
} else {
#ifndef PHP_WIN32
/* On Windows, we expect regular chown to fail silently by default */
php_error_docref(NULL, E_WARNING, "Cannot call chown() for a non-standard stream");
#endif
RETURN_FALSE;
}
}
#ifdef PHP_WIN32
/* We have no native chown on Windows, nothing left to do if stream doesn't have own implementation */
RETURN_FALSE;
#else
if (user_str) {
if (php_get_uid_by_name(ZSTR_VAL(user_str), &uid) != SUCCESS) {
php_error_docref(NULL, E_WARNING, "Unable to find uid for %s", ZSTR_VAL(user_str));
RETURN_FALSE;
}
} else {
uid = (uid_t) user_long;
}
/* Check the basedir */
if (php_check_open_basedir(filename)) {
RETURN_FALSE;
}
if (do_lchown) {
#ifdef 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
}
/* }}} */
/* {{{ Change file owner */
PHP_FUNCTION(chown)
{
php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Change file owner */
#ifdef HAVE_LCHOWN
PHP_FUNCTION(lchown)
{
RETVAL_TRUE;
php_do_chown(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
#endif
/* }}} */
/* {{{ 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, "Cannot 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;
}
/* }}} */
#ifdef HAVE_UTIME
/* {{{ Set modification time of file */
PHP_FUNCTION(touch)
{
char *filename;
size_t filename_len;
zend_long filetime = 0, fileatime = 0;
bool filetime_is_null = 1, fileatime_is_null = 1;
int ret;
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_OR_NULL(filetime, filetime_is_null)
Z_PARAM_LONG_OR_NULL(fileatime, fileatime_is_null)
ZEND_PARSE_PARAMETERS_END();
if (!filename_len) {
RETURN_FALSE;
}
if (filetime_is_null && fileatime_is_null) {
newtime = NULL;
} else if (!filetime_is_null && fileatime_is_null) {
newtime->modtime = newtime->actime = filetime;
} else if (filetime_is_null && !fileatime_is_null) {
zend_argument_value_error(2, "cannot be null when argument #3 ($atime) is an integer");
RETURN_THROWS();
} else {
newtime->modtime = filetime;
newtime->actime = fileatime;
}
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(!filetime_is_null || !fileatime_is_null) {
php_error_docref(NULL, E_WARNING, "Cannot 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(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)) {
zend_string_release(BG(CurrentStatFile));
BG(CurrentStatFile) = NULL;
}
if (BG(CurrentLStatFile)) {
zend_string_release(BG(CurrentLStatFile));
BG(CurrentLStatFile) = NULL;
}
if (clear_realpath_cache) {
if (filename != NULL) {
realpath_cache_del(filename, filename_len);
} else {
realpath_cache_clean();
}
}
}
/* }}} */
/* {{{ Clear file stat cache */
PHP_FUNCTION(clearstatcache)
{
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 || (__t) == FS_LPERMS)
#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 || (__t) == FS_LPERMS)
#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(zend_string *filename, int type, zval *return_value)
{
php_stream_statbuf ssb = {0};
zend_stat_t *stat_sb = &ssb.sb;
int flags = 0, rmask=S_IROTH, wmask=S_IWOTH, xmask=S_IXOTH; /* access rights defaults to other */
const char *local = NULL;
php_stream_wrapper *wrapper = NULL;
if (IS_ACCESS_CHECK(type)) {
if (!ZSTR_LEN(filename) || CHECK_NULL_PATH(ZSTR_VAL(filename), ZSTR_LEN(filename))) {
if (ZSTR_LEN(filename) && !IS_EXISTS_CHECK(type)) {
php_error_docref(NULL, E_WARNING, "Filename contains null byte");
}
RETURN_FALSE;
}
if ((wrapper = php_stream_locate_url_wrapper(ZSTR_VAL(filename), &local, 0)) == &php_plain_files_wrapper
&& php_check_open_basedir(local)) {
RETURN_FALSE;
}
if (wrapper == &php_plain_files_wrapper) {
char realpath[MAXPATHLEN];
const char *file_path_to_check;
/* if the wrapper is not found, we need to expand path to match open behavior */
if (EXPECTED(!php_is_stream_path(local) || expand_filepath(local, realpath) == NULL)) {
file_path_to_check = local;
} else {
file_path_to_check = realpath;
}
switch (type) {
#ifdef F_OK
case FS_EXISTS:
RETURN_BOOL(VCWD_ACCESS(file_path_to_check, F_OK) == 0);
break;
#endif
#ifdef W_OK
case FS_IS_W:
RETURN_BOOL(VCWD_ACCESS(file_path_to_check, W_OK) == 0);
break;
#endif
#ifdef R_OK
case FS_IS_R:
RETURN_BOOL(VCWD_ACCESS(file_path_to_check, R_OK) == 0);
break;
#endif
#ifdef X_OK
case FS_IS_X:
RETURN_BOOL(VCWD_ACCESS(file_path_to_check, 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;
}
do {
/* Try to hit the cache first */
if (flags & PHP_STREAM_URL_STAT_LINK) {
if (filename == BG(CurrentLStatFile)
|| (BG(CurrentLStatFile)
&& zend_string_equal_content(filename, BG(CurrentLStatFile)))) {
stat_sb = &BG(lssb).sb;
break;
}
} else {
if (filename == BG(CurrentStatFile)
|| (BG(CurrentStatFile)
&& zend_string_equal_content(filename, BG(CurrentStatFile)))) {
stat_sb = &BG(ssb).sb;
break;
}
}
if (!wrapper) {
if (!ZSTR_LEN(filename) || CHECK_NULL_PATH(ZSTR_VAL(filename), ZSTR_LEN(filename))) {
if (ZSTR_LEN(filename) && !IS_EXISTS_CHECK(type)) {
php_error_docref(NULL, E_WARNING, "Filename contains null byte");
}
RETURN_FALSE;
}
if ((wrapper = php_stream_locate_url_wrapper(ZSTR_VAL(filename), &local, 0)) == &php_plain_files_wrapper
&& php_check_open_basedir(local)) {
RETURN_FALSE;
}
}
if (!wrapper
|| !wrapper->wops->url_stat
|| wrapper->wops->url_stat(wrapper, local, flags | PHP_STREAM_URL_STAT_IGNORE_OPEN_BASEDIR, &ssb, NULL)) {
/* Error Occurred */
if (!IS_EXISTS_CHECK(type)) {
php_error_docref(NULL, E_WARNING, "%sstat failed for %s", IS_LINK_OPERATION(type) ? "L" : "", ZSTR_VAL(filename));
}
RETURN_FALSE;
}
/* Drop into cache */
if (flags & PHP_STREAM_URL_STAT_LINK) {
if (BG(CurrentLStatFile)) {
zend_string_release(BG(CurrentLStatFile));
}
BG(CurrentLStatFile) = zend_string_copy(filename);
memcpy(&BG(lssb), &ssb, sizeof(php_stream_statbuf));
}
if (!(flags & PHP_STREAM_URL_STAT_LINK)
|| !S_ISLNK(ssb.sb.st_mode)) {
if (BG(CurrentStatFile)) {
zend_string_release(BG(CurrentStatFile));
}
BG(CurrentStatFile) = zend_string_copy(filename);
memcpy(&BG(ssb), &ssb, sizeof(php_stream_statbuf));
}
} while (0);
if (type >= FS_IS_W && type <= FS_IS_X) {
if(stat_sb->st_uid==getuid()) {
rmask=S_IRUSR;
wmask=S_IWUSR;
xmask=S_IXUSR;
} else if(stat_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(stat_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:
case FS_LPERMS:
RETURN_LONG((zend_long)stat_sb->st_mode);
case FS_INODE:
RETURN_LONG((zend_long)stat_sb->st_ino);
case FS_SIZE:
RETURN_LONG((zend_long)stat_sb->st_size);
case FS_OWNER:
RETURN_LONG((zend_long)stat_sb->st_uid);
case FS_GROUP:
RETURN_LONG((zend_long)stat_sb->st_gid);
case FS_ATIME:
RETURN_LONG((zend_long)stat_sb->st_atime);
case FS_MTIME:
RETURN_LONG((zend_long)stat_sb->st_mtime);
case FS_CTIME:
RETURN_LONG((zend_long)stat_sb->st_ctime);
case FS_TYPE:
if (S_ISLNK(stat_sb->st_mode)) {
RETURN_STRING("link");
}
switch(stat_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_STR(ZSTR_KNOWN(ZEND_STR_FILE)); /* "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)", stat_sb->st_mode&S_IFMT);
RETURN_STRING("unknown");
case FS_IS_W:
RETURN_BOOL((stat_sb->st_mode & wmask) != 0);
case FS_IS_R:
RETURN_BOOL((stat_sb->st_mode & rmask) != 0);
case FS_IS_X:
RETURN_BOOL((stat_sb->st_mode & xmask) != 0);
case FS_IS_FILE:
RETURN_BOOL(S_ISREG(stat_sb->st_mode));
case FS_IS_DIR:
RETURN_BOOL(S_ISDIR(stat_sb->st_mode));
case FS_IS_LINK:
RETURN_BOOL(S_ISLNK(stat_sb->st_mode));
case FS_EXISTS:
RETURN_TRUE; /* the false case was done earlier */
case FS_LSTAT:
/* FALLTHROUGH */
case FS_STAT: {
char *stat_sb_names[] = {
"dev", "ino", "mode", "nlink", "uid", "gid", "rdev",
"size", "atime", "mtime", "ctime", "blksize", "blocks"
};
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;
zval *stat_sb_addresses[] = {
&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
};
size_t i, size_stat_sb = sizeof(stat_sb_addresses) / sizeof(*stat_sb_addresses);
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
for (i = 0; i < size_stat_sb; i++) {
/* Store numeric indexes in proper order */
zend_hash_next_index_insert(Z_ARRVAL_P(return_value), stat_sb_addresses[i]);
}
for (i = 0; i < size_stat_sb; i++) {
/* Store string indexes referencing the same zval */
zend_hash_str_add_new(Z_ARRVAL_P(return_value), stat_sb_names[i], strlen(stat_sb_names[i]), stat_sb_addresses[i]);
}
return;
}
}
php_error_docref(NULL, E_WARNING, "Didn't understand stat call");
RETURN_FALSE;
}
/* }}} */