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tsrm_virtual_cwd.h
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/* +----------------------------------------------------------------------+ | PHP Version 5 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2015 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. | +----------------------------------------------------------------------+ | Authors: Andi Gutmans <andi@zend.com> | | Sascha Schumann <sascha@schumann.cx> | | Pierre Joye <pierre@php.net> | +----------------------------------------------------------------------+ */ /* $Id$ */ #ifndef VIRTUAL_CWD_H #define VIRTUAL_CWD_H #include "TSRM.h" #include "tsrm_config_common.h" #include <sys/types.h> #include <sys/stat.h> #include <ctype.h> #ifdef HAVE_UTIME_H #include <utime.h> #endif #ifdef HAVE_STDARG_H #include <stdarg.h> #endif #ifdef ZTS #define VIRTUAL_DIR #endif #ifndef TSRM_WIN32 #include <unistd.h> #else #include <direct.h> #endif #if defined(__osf__) || defined(_AIX) #include <errno.h> #endif #ifdef TSRM_WIN32 #include "readdir.h" #include <sys/utime.h> /* mode_t isn't defined on Windows */ typedef unsigned short mode_t; #define DEFAULT_SLASH '\\' #define DEFAULT_DIR_SEPARATOR ';' #define IS_SLASH(c) ((c) == '/' || (c) == '\\') #define IS_SLASH_P(c) (*(c) == '/' || \ (*(c) == '\\' && !IsDBCSLeadByte(*(c-1)))) /* COPY_WHEN_ABSOLUTE is 2 under Win32 because by chance both regular absolute paths in the file system and UNC paths need copying of two characters */ #define COPY_WHEN_ABSOLUTE(path) 2 #define IS_UNC_PATH(path, len) \ (len >= 2 && IS_SLASH(path[0]) && IS_SLASH(path[1])) #define IS_ABSOLUTE_PATH(path, len) \ (len >= 2 && ((isalpha(path[0]) && path[1] == ':') || IS_UNC_PATH(path, len))) #elif defined(NETWARE) #ifdef HAVE_DIRENT_H #include <dirent.h> #endif #define DEFAULT_SLASH '/' #define DEFAULT_DIR_SEPARATOR ';' #define IS_SLASH(c) ((c) == '/' || (c) == '\\') #define IS_SLASH_P(c) IS_SLASH(*(c)) /* Colon indicates volume name, either first character should be forward slash or backward slash */ #define IS_ABSOLUTE_PATH(path, len) \ ((strchr(path, ':') != NULL) || ((len >= 1) && ((path[0] == '/') || (path[0] == '\\')))) #else #ifdef HAVE_DIRENT_H #include <dirent.h> #endif #define DEFAULT_SLASH '/' #ifdef __riscos__ #define DEFAULT_DIR_SEPARATOR ';' #else #define DEFAULT_DIR_SEPARATOR ':' #endif #define IS_SLASH(c) ((c) == '/') #define IS_SLASH_P(c) (*(c) == '/') #endif #ifndef COPY_WHEN_ABSOLUTE #define COPY_WHEN_ABSOLUTE(path) 0 #endif #ifndef IS_ABSOLUTE_PATH #define IS_ABSOLUTE_PATH(path, len) \ (IS_SLASH(path[0])) #endif #ifdef TSRM_EXPORTS #define CWD_EXPORTS #endif #ifdef TSRM_WIN32 # ifdef CWD_EXPORTS # define CWD_API __declspec(dllexport) # else # define CWD_API __declspec(dllimport) # endif #elif defined(__GNUC__) && __GNUC__ >= 4 # define CWD_API __attribute__ ((visibility("default"))) #else # define CWD_API #endif #ifdef TSRM_WIN32 CWD_API int php_sys_stat_ex(const char *path, struct stat *buf, int lstat); # define php_sys_stat(path, buf) php_sys_stat_ex(path, buf, 0) # define php_sys_lstat(path, buf) php_sys_stat_ex(path, buf, 1) CWD_API int php_sys_readlink(const char *link, char *target, size_t target_len); #else # define php_sys_stat stat # define php_sys_lstat lstat # ifdef HAVE_SYMLINK # define php_sys_readlink(link, target, target_len) readlink(link, target, target_len) # endif #endif typedef struct _cwd_state { char *cwd; int cwd_length; } cwd_state; typedef int (*verify_path_func)(const cwd_state *); CWD_API void virtual_cwd_startup(void); CWD_API void virtual_cwd_shutdown(void); CWD_API char *virtual_getcwd_ex(size_t *length TSRMLS_DC); CWD_API char *virtual_getcwd(char *buf, size_t size TSRMLS_DC); CWD_API int virtual_chdir(const char *path TSRMLS_DC); CWD_API int virtual_chdir_file(const char *path, int (*p_chdir)(const char *path TSRMLS_DC) TSRMLS_DC); CWD_API int virtual_filepath(const char *path, char **filepath TSRMLS_DC); CWD_API int virtual_filepath_ex(const char *path, char **filepath, verify_path_func verify_path TSRMLS_DC); CWD_API char *virtual_realpath(const char *path, char *real_path TSRMLS_DC); CWD_API FILE *virtual_fopen(const char *path, const char *mode TSRMLS_DC); CWD_API int virtual_open(const char *path TSRMLS_DC, int flags, ...); CWD_API int virtual_creat(const char *path, mode_t mode TSRMLS_DC); CWD_API int virtual_rename(char *oldname, char *newname TSRMLS_DC); CWD_API int virtual_stat(const char *path, struct stat *buf TSRMLS_DC); CWD_API int virtual_lstat(const char *path, struct stat *buf TSRMLS_DC); CWD_API int virtual_unlink(const char *path TSRMLS_DC); CWD_API int virtual_mkdir(const char *pathname, mode_t mode TSRMLS_DC); CWD_API int virtual_rmdir(const char *pathname TSRMLS_DC); CWD_API DIR *virtual_opendir(const char *pathname TSRMLS_DC); CWD_API FILE *virtual_popen(const char *command, const char *type TSRMLS_DC); CWD_API int virtual_access(const char *pathname, int mode TSRMLS_DC); #if defined(TSRM_WIN32) /* these are not defined in win32 headers */ #ifndef W_OK #define W_OK 0x02 #endif #ifndef R_OK #define R_OK 0x04 #endif #ifndef X_OK #define X_OK 0x01 #endif #ifndef F_OK #define F_OK 0x00 #endif #endif #if HAVE_UTIME CWD_API int virtual_utime(const char *filename, struct utimbuf *buf TSRMLS_DC); #endif CWD_API int virtual_chmod(const char *filename, mode_t mode TSRMLS_DC); #if !defined(TSRM_WIN32) && !defined(NETWARE) CWD_API int virtual_chown(const char *filename, uid_t owner, gid_t group, int link TSRMLS_DC); #endif /* One of the following constants must be used as the last argument in virtual_file_ex() call. */ #define CWD_EXPAND 0 /* expand "." and ".." but dont resolve symlinks */ #define CWD_FILEPATH 1 /* resolve symlinks if file is exist otherwise expand */ #define CWD_REALPATH 2 /* call realpath(), resolve symlinks. File must exist */ CWD_API int virtual_file_ex(cwd_state *state, const char *path, verify_path_func verify_path, int use_realpath TSRMLS_DC); CWD_API char *tsrm_realpath(const char *path, char *real_path TSRMLS_DC); #define REALPATH_CACHE_TTL (2*60) /* 2 minutes */ #define REALPATH_CACHE_SIZE 0 /* disabled while php.ini isn't loaded */ typedef struct _realpath_cache_bucket { unsigned long key; char *path; int path_len; char *realpath; int realpath_len; int is_dir; time_t expires; #ifdef PHP_WIN32 unsigned char is_rvalid; unsigned char is_readable; unsigned char is_wvalid; unsigned char is_writable; #endif struct _realpath_cache_bucket *next; } realpath_cache_bucket; typedef struct _virtual_cwd_globals { cwd_state cwd; long realpath_cache_size; long realpath_cache_size_limit; long realpath_cache_ttl; realpath_cache_bucket *realpath_cache[1024]; } virtual_cwd_globals; #ifdef ZTS extern ts_rsrc_id cwd_globals_id; # define CWDG(v) TSRMG(cwd_globals_id, virtual_cwd_globals *, v) #else extern virtual_cwd_globals cwd_globals; # define CWDG(v) (cwd_globals.v) #endif CWD_API void realpath_cache_clean(TSRMLS_D); CWD_API void realpath_cache_del(const char *path, int path_len TSRMLS_DC); CWD_API realpath_cache_bucket* realpath_cache_lookup(const char *path, int path_len, time_t t TSRMLS_DC); CWD_API int realpath_cache_size(TSRMLS_D); CWD_API int realpath_cache_max_buckets(TSRMLS_D); CWD_API realpath_cache_bucket** realpath_cache_get_buckets(TSRMLS_D); /* The actual macros to be used in programs using TSRM * If the program defines VIRTUAL_DIR it will use the * virtual_* functions */ #ifdef VIRTUAL_DIR #define VCWD_GETCWD(buff, size) virtual_getcwd(buff, size TSRMLS_CC) #define VCWD_FOPEN(path, mode) virtual_fopen(path, mode TSRMLS_CC) /* Because open() has two modes, we have to macros to replace it */ #define VCWD_OPEN(path, flags) virtual_open(path TSRMLS_CC, flags) #define VCWD_OPEN_MODE(path, flags, mode) virtual_open(path TSRMLS_CC, flags, mode) #define VCWD_CREAT(path, mode) virtual_creat(path, mode TSRMLS_CC) #define VCWD_CHDIR(path) virtual_chdir(path TSRMLS_CC) #define VCWD_CHDIR_FILE(path) virtual_chdir_file(path, virtual_chdir TSRMLS_CC) #define VCWD_GETWD(buf) #define VCWD_REALPATH(path, real_path) virtual_realpath(path, real_path TSRMLS_CC) #define VCWD_RENAME(oldname, newname) virtual_rename(oldname, newname TSRMLS_CC) #define VCWD_STAT(path, buff) virtual_stat(path, buff TSRMLS_CC) # define VCWD_LSTAT(path, buff) virtual_lstat(path, buff TSRMLS_CC) #define VCWD_UNLINK(path) virtual_unlink(path TSRMLS_CC) #define VCWD_MKDIR(pathname, mode) virtual_mkdir(pathname, mode TSRMLS_CC) #define VCWD_RMDIR(pathname) virtual_rmdir(pathname TSRMLS_CC) #define VCWD_OPENDIR(pathname) virtual_opendir(pathname TSRMLS_CC) #define VCWD_POPEN(command, type) virtual_popen(command, type TSRMLS_CC) #define VCWD_ACCESS(pathname, mode) virtual_access(pathname, mode TSRMLS_CC) #if HAVE_UTIME #define VCWD_UTIME(path, time) virtual_utime(path, time TSRMLS_CC) #endif #define VCWD_CHMOD(path, mode) virtual_chmod(path, mode TSRMLS_CC) #if !defined(TSRM_WIN32) && !defined(NETWARE) #define VCWD_CHOWN(path, owner, group) virtual_chown(path, owner, group, 0 TSRMLS_CC) #if HAVE_LCHOWN #define VCWD_LCHOWN(path, owner, group) virtual_chown(path, owner, group, 1 TSRMLS_CC) #endif #endif #else #define VCWD_GETCWD(buff, size) getcwd(buff, size) #define VCWD_FOPEN(path, mode) fopen(path, mode) #define VCWD_OPEN(path, flags) open(path, flags) #define VCWD_OPEN_MODE(path, flags, mode) open(path, flags, mode) #define VCWD_CREAT(path, mode) creat(path, mode) /* rename on windows will fail if newname already exists. MoveFileEx has to be used */ #if defined(TSRM_WIN32) # define VCWD_RENAME(oldname, newname) (MoveFileEx(oldname, newname, MOVEFILE_REPLACE_EXISTING|MOVEFILE_COPY_ALLOWED) == 0 ? -1 : 0) #else # define VCWD_RENAME(oldname, newname) rename(oldname, newname) #endif #define VCWD_CHDIR(path) chdir(path) #define VCWD_CHDIR_FILE(path) virtual_chdir_file(path, chdir) #define VCWD_GETWD(buf) getwd(buf) #define VCWD_STAT(path, buff) php_sys_stat(path, buff) #define VCWD_LSTAT(path, buff) lstat(path, buff) #define VCWD_UNLINK(path) unlink(path) #define VCWD_MKDIR(pathname, mode) mkdir(pathname, mode) #define VCWD_RMDIR(pathname) rmdir(pathname) #define VCWD_OPENDIR(pathname) opendir(pathname) #define VCWD_POPEN(command, type) popen(command, type) #if defined(TSRM_WIN32) #define VCWD_ACCESS(pathname, mode) tsrm_win32_access(pathname, mode TSRMLS_CC) #else #define VCWD_ACCESS(pathname, mode) access(pathname, mode) #endif #define VCWD_REALPATH(path, real_path) tsrm_realpath(path, real_path TSRMLS_CC) #if HAVE_UTIME # ifdef TSRM_WIN32 # define VCWD_UTIME(path, time) win32_utime(path, time) # else # define VCWD_UTIME(path, time) utime(path, time) # endif #endif #define VCWD_CHMOD(path, mode) chmod(path, mode) #if !defined(TSRM_WIN32) && !defined(NETWARE) #define VCWD_CHOWN(path, owner, group) chown(path, owner, group) #if HAVE_LCHOWN #define VCWD_LCHOWN(path, owner, group) lchown(path, owner, group) #endif #endif #endif #endif /* VIRTUAL_CWD_H */