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php_streams.h
/* +----------------------------------------------------------------------+ | 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 | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Author: Wez Furlong (wez@thebrainroom.com) | +----------------------------------------------------------------------+ */ #ifndef PHP_STREAMS_H #define PHP_STREAMS_H #ifdef HAVE_SYS_TIME_H #include <sys/time.h> #endif #include <sys/types.h> #include <sys/stat.h> #include "zend.h" #include "zend_stream.h" BEGIN_EXTERN_C() PHPAPI int php_file_le_stream(void); PHPAPI int php_file_le_pstream(void); PHPAPI int php_file_le_stream_filter(void); END_EXTERN_C() /* {{{ Streams memory debugging stuff */ #if ZEND_DEBUG /* these have more of a dependency on the definitions of the zend macros than * I would prefer, but doing it this way saves loads of idefs :-/ */ # define STREAMS_D int __php_stream_call_depth ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC # define STREAMS_C 0 ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC # define STREAMS_REL_C __php_stream_call_depth + 1 ZEND_FILE_LINE_CC, \ __php_stream_call_depth ? __zend_orig_filename : __zend_filename, \ __php_stream_call_depth ? __zend_orig_lineno : __zend_lineno # define STREAMS_DC , STREAMS_D # define STREAMS_CC , STREAMS_C # define STREAMS_REL_CC , STREAMS_REL_C #else # define STREAMS_D # define STREAMS_C # define STREAMS_REL_C # define STREAMS_DC # define STREAMS_CC # define STREAMS_REL_CC #endif /* these functions relay the file/line number information. They are depth aware, so they will pass * the ultimate ancestor, which is useful, because there can be several layers of calls */ #define php_stream_alloc_rel(ops, thisptr, persistent, mode) _php_stream_alloc((ops), (thisptr), (persistent), (mode) STREAMS_REL_CC) #define php_stream_copy_to_mem_rel(src, maxlen, persistent) _php_stream_copy_to_mem((src), (buf), (maxlen), (persistent) STREAMS_REL_CC) #define php_stream_fopen_rel(filename, mode, opened, options) _php_stream_fopen((filename), (mode), (opened), (options) STREAMS_REL_CC) #define php_stream_fopen_with_path_rel(filename, mode, path, opened, options) _php_stream_fopen_with_path((filename), (mode), (path), (opened), (options) STREAMS_REL_CC) #define php_stream_fopen_from_fd_rel(fd, mode, persistent_id, zero_position) _php_stream_fopen_from_fd((fd), (mode), (persistent_id), (zero_position) STREAMS_REL_CC) #define php_stream_fopen_from_file_rel(file, mode) _php_stream_fopen_from_file((file), (mode) STREAMS_REL_CC) #define php_stream_fopen_from_pipe_rel(file, mode) _php_stream_fopen_from_pipe((file), (mode) STREAMS_REL_CC) #define php_stream_fopen_tmpfile_rel() _php_stream_fopen_tmpfile(0 STREAMS_REL_CC) #define php_stream_fopen_temporary_file_rel(dir, pfx, opened_path) _php_stream_fopen_temporary_file((dir), (pfx), (opened_path) STREAMS_REL_CC) #define php_stream_open_wrapper_rel(path, mode, options, opened) _php_stream_open_wrapper_ex((path), (mode), (options), (opened), NULL STREAMS_REL_CC) #define php_stream_open_wrapper_ex_rel(path, mode, options, opened, context) _php_stream_open_wrapper_ex((path), (mode), (options), (opened), (context) STREAMS_REL_CC) #define php_stream_make_seekable_rel(origstream, newstream, flags) _php_stream_make_seekable((origstream), (newstream), (flags) STREAMS_REL_CC) /* }}} */ /* The contents of the php_stream_ops and php_stream should only be accessed * using the functions/macros in this header. * If you need to get at something that doesn't have an API, * drop me a line <wez@thebrainroom.com> and we can sort out a way to do * it properly. * * The only exceptions to this rule are that stream implementations can use * the php_stream->abstract pointer to hold their context, and streams * opened via stream_open_wrappers can use the zval ptr in * php_stream->wrapperdata to hold metadata for php scripts to * retrieve using file_get_wrapper_data(). */ typedef struct _php_stream php_stream; typedef struct _php_stream_wrapper php_stream_wrapper; typedef struct _php_stream_context php_stream_context; typedef struct _php_stream_filter php_stream_filter; #include "streams/php_stream_context.h" #include "streams/php_stream_filter_api.h" typedef struct _php_stream_statbuf { zend_stat_t sb; /* regular info */ /* extended info to go here some day: content-type etc. etc. */ } php_stream_statbuf; typedef struct _php_stream_dirent { char d_name[MAXPATHLEN]; unsigned char d_type; } php_stream_dirent; /* operations on streams that are file-handles */ typedef struct _php_stream_ops { /* stdio like functions - these are mandatory! */ ssize_t (*write)(php_stream *stream, const char *buf, size_t count); ssize_t (*read)(php_stream *stream, char *buf, size_t count); int (*close)(php_stream *stream, int close_handle); int (*flush)(php_stream *stream); const char *label; /* label for this ops structure */ /* these are optional */ int (*seek)(php_stream *stream, zend_off_t offset, int whence, zend_off_t *newoffset); int (*cast)(php_stream *stream, int castas, void **ret); int (*stat)(php_stream *stream, php_stream_statbuf *ssb); int (*set_option)(php_stream *stream, int option, int value, void *ptrparam); } php_stream_ops; typedef struct _php_stream_wrapper_ops { /* open/create a wrapped stream */ php_stream *(*stream_opener)(php_stream_wrapper *wrapper, const char *filename, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC); /* close/destroy a wrapped stream */ int (*stream_closer)(php_stream_wrapper *wrapper, php_stream *stream); /* stat a wrapped stream */ int (*stream_stat)(php_stream_wrapper *wrapper, php_stream *stream, php_stream_statbuf *ssb); /* stat a URL */ int (*url_stat)(php_stream_wrapper *wrapper, const char *url, int flags, php_stream_statbuf *ssb, php_stream_context *context); /* open a "directory" stream */ php_stream *(*dir_opener)(php_stream_wrapper *wrapper, const char *filename, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC); const char *label; /* delete a file */ int (*unlink)(php_stream_wrapper *wrapper, const char *url, int options, php_stream_context *context); /* rename a file */ int (*rename)(php_stream_wrapper *wrapper, const char *url_from, const char *url_to, int options, php_stream_context *context); /* Create/Remove directory */ int (*stream_mkdir)(php_stream_wrapper *wrapper, const char *url, int mode, int options, php_stream_context *context); int (*stream_rmdir)(php_stream_wrapper *wrapper, const char *url, int options, php_stream_context *context); /* Metadata handling */ int (*stream_metadata)(php_stream_wrapper *wrapper, const char *url, int options, void *value, php_stream_context *context); } php_stream_wrapper_ops; struct _php_stream_wrapper { const php_stream_wrapper_ops *wops; /* operations the wrapper can perform */ void *abstract; /* context for the wrapper */ int is_url; /* so that PG(allow_url_fopen) can be respected */ }; #define PHP_STREAM_FLAG_NO_SEEK 0x1 #define PHP_STREAM_FLAG_NO_BUFFER 0x2 #define PHP_STREAM_FLAG_EOL_UNIX 0x0 /* also includes DOS */ #define PHP_STREAM_FLAG_DETECT_EOL 0x4 #define PHP_STREAM_FLAG_EOL_MAC 0x8 /* set this when the stream might represent "interactive" data. * When set, the read buffer will avoid certain operations that * might otherwise cause the read to block for much longer than * is strictly required. */ #define PHP_STREAM_FLAG_AVOID_BLOCKING 0x10 #define PHP_STREAM_FLAG_NO_CLOSE 0x20 #define PHP_STREAM_FLAG_IS_DIR 0x40 #define PHP_STREAM_FLAG_NO_FCLOSE 0x80 /* Suppress generation of PHP warnings on stream read/write errors. * Currently, for internal use only. */ #define PHP_STREAM_FLAG_SUPPRESS_ERRORS 0x100 /* Do not close handle except it is explicitly closed by user (e.g. fclose) */ #define PHP_STREAM_FLAG_NO_RSCR_DTOR_CLOSE 0x200 #define PHP_STREAM_FLAG_NO_IO 0x400 #define PHP_STREAM_FLAG_WAS_WRITTEN 0x80000000 struct _php_stream { const php_stream_ops *ops; void *abstract; /* convenience pointer for abstraction */ php_stream_filter_chain readfilters, writefilters; php_stream_wrapper *wrapper; /* which wrapper was used to open the stream */ void *wrapperthis; /* convenience pointer for an instance of a wrapper */ zval wrapperdata; /* fgetwrapperdata retrieves this */ uint16_t is_persistent:1; uint16_t in_free:2; /* to prevent recursion during free */ uint16_t eof:1; uint16_t __exposed:1; /* non-zero if exposed as a zval somewhere */ /* so we know how to clean it up correctly. This should be set to * PHP_STREAM_FCLOSE_XXX as appropriate */ uint16_t fclose_stdiocast:2; /* flag to mark whether the stream has buffered data */ uint16_t has_buffered_data:1; /* whether stdio cast flushing is in progress */ uint16_t fclose_stdiocast_flush_in_progress:1; /* whether fatal error happened and all operations should terminates as soon as possible */ uint16_t fatal_error:1; char mode[16]; /* "rwb" etc. ala stdio */ uint32_t flags; /* PHP_STREAM_FLAG_XXX */ zend_resource *res; /* used for auto-cleanup */ FILE *stdiocast; /* cache this, otherwise we might leak! */ char *orig_path; zend_resource *ctx; /* buffer */ zend_off_t position; /* of underlying stream */ unsigned char *readbuf; size_t readbuflen; zend_off_t readpos; zend_off_t writepos; /* how much data to read when filling buffer */ size_t chunk_size; #if ZEND_DEBUG const char *open_filename; uint32_t open_lineno; #endif struct _php_stream *enclosing_stream; /* this is a private stream owned by enclosing_stream */ }; /* php_stream */ #define PHP_STREAM_CONTEXT(stream) \ ((php_stream_context*) ((stream)->ctx ? ((stream)->ctx->ptr) : NULL)) /* state definitions when closing down; these are private to streams.c */ #define PHP_STREAM_FCLOSE_NONE 0 #define PHP_STREAM_FCLOSE_FDOPEN 1 #define PHP_STREAM_FCLOSE_FOPENCOOKIE 2 /* allocate a new stream for a particular ops */ BEGIN_EXTERN_C() PHPAPI php_stream *_php_stream_alloc(const php_stream_ops *ops, void *abstract, const char *persistent_id, const char *mode STREAMS_DC); END_EXTERN_C() #define php_stream_alloc(ops, thisptr, persistent_id, mode) _php_stream_alloc((ops), (thisptr), (persistent_id), (mode) STREAMS_CC) #define php_stream_get_resource_id(stream) ((php_stream *)(stream))->res->handle /* use this to tell the stream that it is OK if we don't explicitly close it */ #define php_stream_auto_cleanup(stream) { (stream)->__exposed = 1; } /* use this to assign the stream to a zval and tell the stream that is * has been exported to the engine; it will expect to be closed automatically * when the resources are auto-destructed */ #define php_stream_to_zval(stream, zval) { ZVAL_RES(zval, (stream)->res); (stream)->__exposed = 1; } #define php_stream_from_zval(xstr, pzval) do { \ if (((xstr) = (php_stream*)zend_fetch_resource2_ex((pzval), \ "stream", php_file_le_stream(), php_file_le_pstream())) == NULL) { \ return; \ } \ } while (0) #define php_stream_from_res(xstr, res) do { \ if (((xstr) = (php_stream*)zend_fetch_resource2((res), \ "stream", php_file_le_stream(), php_file_le_pstream())) == NULL) { \ return; \ } \ } while (0) #define php_stream_from_res_no_verify(xstr, pzval) (xstr) = (php_stream*)zend_fetch_resource2((res), "stream", php_file_le_stream(), php_file_le_pstream()) #define php_stream_from_zval_no_verify(xstr, pzval) (xstr) = (php_stream*)zend_fetch_resource2_ex((pzval), "stream", php_file_le_stream(), php_file_le_pstream()) BEGIN_EXTERN_C() PHPAPI php_stream *php_stream_encloses(php_stream *enclosing, php_stream *enclosed); #define php_stream_free_enclosed(stream_enclosed, close_options) _php_stream_free_enclosed((stream_enclosed), (close_options)) PHPAPI int _php_stream_free_enclosed(php_stream *stream_enclosed, int close_options); PHPAPI int php_stream_from_persistent_id(const char *persistent_id, php_stream **stream); #define PHP_STREAM_PERSISTENT_SUCCESS 0 /* id exists */ #define PHP_STREAM_PERSISTENT_FAILURE 1 /* id exists but is not a stream! */ #define PHP_STREAM_PERSISTENT_NOT_EXIST 2 /* id does not exist */ #define PHP_STREAM_FREE_CALL_DTOR 1 /* call ops->close */ #define PHP_STREAM_FREE_RELEASE_STREAM 2 /* pefree(stream) */ #define PHP_STREAM_FREE_PRESERVE_HANDLE 4 /* tell ops->close to not close its underlying handle */ #define PHP_STREAM_FREE_RSRC_DTOR 8 /* called from the resource list dtor */ #define PHP_STREAM_FREE_PERSISTENT 16 /* manually freeing a persistent connection */ #define PHP_STREAM_FREE_IGNORE_ENCLOSING 32 /* don't close the enclosing stream instead */ #define PHP_STREAM_FREE_KEEP_RSRC 64 /* keep associated zend_resource */ #define PHP_STREAM_FREE_CLOSE (PHP_STREAM_FREE_CALL_DTOR | PHP_STREAM_FREE_RELEASE_STREAM) #define PHP_STREAM_FREE_CLOSE_CASTED (PHP_STREAM_FREE_CLOSE | PHP_STREAM_FREE_PRESERVE_HANDLE) #define PHP_STREAM_FREE_CLOSE_PERSISTENT (PHP_STREAM_FREE_CLOSE | PHP_STREAM_FREE_PERSISTENT) PHPAPI int _php_stream_free(php_stream *stream, int close_options); #define php_stream_free(stream, close_options) _php_stream_free((stream), (close_options)) #define php_stream_close(stream) _php_stream_free((stream), PHP_STREAM_FREE_CLOSE) #define php_stream_pclose(stream) _php_stream_free((stream), PHP_STREAM_FREE_CLOSE_PERSISTENT) PHPAPI int _php_stream_seek(php_stream *stream, zend_off_t offset, int whence); #define php_stream_rewind(stream) _php_stream_seek((stream), 0L, SEEK_SET) #define php_stream_seek(stream, offset, whence) _php_stream_seek((stream), (offset), (whence)) PHPAPI zend_off_t _php_stream_tell(php_stream *stream); #define php_stream_tell(stream) _php_stream_tell((stream)) PHPAPI ssize_t _php_stream_read(php_stream *stream, char *buf, size_t count); #define php_stream_read(stream, buf, count) _php_stream_read((stream), (buf), (count)) PHPAPI zend_string *php_stream_read_to_str(php_stream *stream, size_t len); PHPAPI ssize_t _php_stream_write(php_stream *stream, const char *buf, size_t count); #define php_stream_write_string(stream, str) _php_stream_write(stream, str, strlen(str)) #define php_stream_write(stream, buf, count) _php_stream_write(stream, (buf), (count)) PHPAPI zend_result _php_stream_fill_read_buffer(php_stream *stream, size_t size); #define php_stream_fill_read_buffer(stream, size) _php_stream_fill_read_buffer((stream), (size)) PHPAPI ssize_t _php_stream_printf(php_stream *stream, const char *fmt, ...) PHP_ATTRIBUTE_FORMAT(printf, 2, 3); /* php_stream_printf macro & function require */ #define php_stream_printf _php_stream_printf PHPAPI bool _php_stream_eof(php_stream *stream); #define php_stream_eof(stream) _php_stream_eof((stream)) PHPAPI int _php_stream_getc(php_stream *stream); #define php_stream_getc(stream) _php_stream_getc((stream)) PHPAPI int _php_stream_putc(php_stream *stream, int c); #define php_stream_putc(stream, c) _php_stream_putc((stream), (c)) PHPAPI int _php_stream_flush(php_stream *stream, int closing); #define php_stream_flush(stream) _php_stream_flush((stream), 0) PHPAPI int _php_stream_sync(php_stream *stream, bool data_only); #define php_stream_sync(stream, d) _php_stream_sync((stream), (d)) PHPAPI char *_php_stream_get_line(php_stream *stream, char *buf, size_t maxlen, size_t *returned_len); #define php_stream_gets(stream, buf, maxlen) _php_stream_get_line((stream), (buf), (maxlen), NULL) #define php_stream_get_line(stream, buf, maxlen, retlen) _php_stream_get_line((stream), (buf), (maxlen), (retlen)) PHPAPI zend_string *php_stream_get_record(php_stream *stream, size_t maxlen, const char *delim, size_t delim_len); /* Returns true if buffer has been appended, false on error */ PHPAPI bool _php_stream_puts(php_stream *stream, const char *buf); #define php_stream_puts(stream, buf) _php_stream_puts((stream), (buf)) PHPAPI int _php_stream_stat(php_stream *stream, php_stream_statbuf *ssb); #define php_stream_stat(stream, ssb) _php_stream_stat((stream), (ssb)) PHPAPI int _php_stream_stat_path(const char *path, int flags, php_stream_statbuf *ssb, php_stream_context *context); #define php_stream_stat_path(path, ssb) _php_stream_stat_path((path), 0, (ssb), NULL) #define php_stream_stat_path_ex(path, flags, ssb, context) _php_stream_stat_path((path), (flags), (ssb), (context)) PHPAPI int _php_stream_mkdir(const char *path, int mode, int options, php_stream_context *context); #define php_stream_mkdir(path, mode, options, context) _php_stream_mkdir(path, mode, options, context) PHPAPI int _php_stream_rmdir(const char *path, int options, php_stream_context *context); #define php_stream_rmdir(path, options, context) _php_stream_rmdir(path, options, context) PHPAPI php_stream *_php_stream_opendir(const char *path, int options, php_stream_context *context STREAMS_DC); #define php_stream_opendir(path, options, context) _php_stream_opendir((path), (options), (context) STREAMS_CC) PHPAPI php_stream_dirent *_php_stream_readdir(php_stream *dirstream, php_stream_dirent *ent); #define php_stream_readdir(dirstream, dirent) _php_stream_readdir((dirstream), (dirent)) #define php_stream_closedir(dirstream) php_stream_close((dirstream)) #define php_stream_rewinddir(dirstream) php_stream_rewind((dirstream)) PHPAPI int php_stream_dirent_alphasort(const zend_string **a, const zend_string **b); PHPAPI int php_stream_dirent_alphasortr(const zend_string **a, const zend_string **b); PHPAPI int _php_stream_scandir(const char *dirname, zend_string **namelist[], int flags, php_stream_context *context, int (*compare) (const zend_string **a, const zend_string **b)); #define php_stream_scandir(dirname, namelist, context, compare) _php_stream_scandir((dirname), (namelist), 0, (context), (compare)) PHPAPI int _php_stream_set_option(php_stream *stream, int option, int value, void *ptrparam); #define php_stream_set_option(stream, option, value, ptrvalue) _php_stream_set_option((stream), (option), (value), (ptrvalue)) #define php_stream_set_chunk_size(stream, size) _php_stream_set_option((stream), PHP_STREAM_OPTION_SET_CHUNK_SIZE, (size), NULL) END_EXTERN_C() /* Flags for mkdir method in wrapper ops */ #define PHP_STREAM_MKDIR_RECURSIVE 1 /* define REPORT ERRORS 8 (below) */ /* Flags for rmdir method in wrapper ops */ /* define REPORT_ERRORS 8 (below) */ /* Flags for url_stat method in wrapper ops */ #define PHP_STREAM_URL_STAT_LINK 1 #define PHP_STREAM_URL_STAT_QUIET 2 #define PHP_STREAM_URL_STAT_IGNORE_OPEN_BASEDIR 4 /* change the blocking mode of stream: value == 1 => blocking, value == 0 => non-blocking. */ #define PHP_STREAM_OPTION_BLOCKING 1 /* change the buffering mode of stream. value is a PHP_STREAM_BUFFER_XXXX value, ptrparam is a ptr to a size_t holding * the required buffer size */ #define PHP_STREAM_OPTION_READ_BUFFER 2 #define PHP_STREAM_OPTION_WRITE_BUFFER 3 #define PHP_STREAM_BUFFER_NONE 0 /* unbuffered */ #define PHP_STREAM_BUFFER_LINE 1 /* line buffered */ #define PHP_STREAM_BUFFER_FULL 2 /* fully buffered */ /* set the timeout duration for reads on the stream. ptrparam is a pointer to a struct timeval * */ #define PHP_STREAM_OPTION_READ_TIMEOUT 4 #define PHP_STREAM_OPTION_SET_CHUNK_SIZE 5 /* set or release lock on a stream */ #define PHP_STREAM_OPTION_LOCKING 6 /* whether or not locking is supported */ #define PHP_STREAM_LOCK_SUPPORTED 1 #define php_stream_supports_lock(stream) (_php_stream_set_option((stream), PHP_STREAM_OPTION_LOCKING, 0, (void *) PHP_STREAM_LOCK_SUPPORTED) == 0 ? 1 : 0) #define php_stream_lock(stream, mode) _php_stream_set_option((stream), PHP_STREAM_OPTION_LOCKING, (mode), (void *) NULL) /* option code used by the php_stream_xport_XXX api */ #define PHP_STREAM_OPTION_XPORT_API 7 /* see php_stream_transport.h */ #define PHP_STREAM_OPTION_CRYPTO_API 8 /* see php_stream_transport.h */ #define PHP_STREAM_OPTION_MMAP_API 9 /* see php_stream_mmap.h */ #define PHP_STREAM_OPTION_TRUNCATE_API 10 #define PHP_STREAM_TRUNCATE_SUPPORTED 0 #define PHP_STREAM_TRUNCATE_SET_SIZE 1 /* ptrparam is a pointer to a size_t */ #define php_stream_truncate_supported(stream) (_php_stream_set_option((stream), PHP_STREAM_OPTION_TRUNCATE_API, PHP_STREAM_TRUNCATE_SUPPORTED, NULL) == PHP_STREAM_OPTION_RETURN_OK ? 1 : 0) BEGIN_EXTERN_C() PHPAPI int _php_stream_truncate_set_size(php_stream *stream, size_t newsize); #define php_stream_truncate_set_size(stream, size) _php_stream_truncate_set_size((stream), (size)) END_EXTERN_C() #define PHP_STREAM_OPTION_META_DATA_API 11 /* ptrparam is a zval* to which to add metadata information */ #define php_stream_populate_meta_data(stream, zv) (_php_stream_set_option((stream), PHP_STREAM_OPTION_META_DATA_API, 0, zv) == PHP_STREAM_OPTION_RETURN_OK ? 1 : 0) /* Check if the stream is still "live"; for sockets/pipes this means the socket * is still connected; for files, this does not really have meaning */ #define PHP_STREAM_OPTION_CHECK_LIVENESS 12 /* no parameters */ /* Enable/disable blocking reads on anonymous pipes on Windows. */ #define PHP_STREAM_OPTION_PIPE_BLOCKING 13 /* Stream can support fsync operation */ #define PHP_STREAM_OPTION_SYNC_API 14 #define PHP_STREAM_SYNC_SUPPORTED 0 #define PHP_STREAM_SYNC_FSYNC 1 #define PHP_STREAM_SYNC_FDSYNC 2 #define php_stream_sync_supported(stream) (_php_stream_set_option((stream), PHP_STREAM_OPTION_SYNC_API, PHP_STREAM_SYNC_SUPPORTED, NULL) == PHP_STREAM_OPTION_RETURN_OK ? 1 : 0) #define PHP_STREAM_OPTION_RETURN_OK 0 /* option set OK */ #define PHP_STREAM_OPTION_RETURN_ERR -1 /* problem setting option */ #define PHP_STREAM_OPTION_RETURN_NOTIMPL -2 /* underlying stream does not implement; streams can handle it instead */ /* copy up to maxlen bytes from src to dest. If maxlen is PHP_STREAM_COPY_ALL, * copy until eof(src). */ #define PHP_STREAM_COPY_ALL ((size_t)-1) BEGIN_EXTERN_C() ZEND_ATTRIBUTE_DEPRECATED PHPAPI size_t _php_stream_copy_to_stream(php_stream *src, php_stream *dest, size_t maxlen STREAMS_DC); #define php_stream_copy_to_stream(src, dest, maxlen) _php_stream_copy_to_stream((src), (dest), (maxlen) STREAMS_CC) PHPAPI zend_result _php_stream_copy_to_stream_ex(php_stream *src, php_stream *dest, size_t maxlen, size_t *len STREAMS_DC); #define php_stream_copy_to_stream_ex(src, dest, maxlen, len) _php_stream_copy_to_stream_ex((src), (dest), (maxlen), (len) STREAMS_CC) /* read all data from stream and put into a buffer. Caller must free buffer * when done. */ PHPAPI zend_string *_php_stream_copy_to_mem(php_stream *src, size_t maxlen, int persistent STREAMS_DC); #define php_stream_copy_to_mem(src, maxlen, persistent) _php_stream_copy_to_mem((src), (maxlen), (persistent) STREAMS_CC) /* output all data from a stream */ PHPAPI ssize_t _php_stream_passthru(php_stream * src STREAMS_DC); #define php_stream_passthru(stream) _php_stream_passthru((stream) STREAMS_CC) END_EXTERN_C() #include "streams/php_stream_transport.h" #include "streams/php_stream_plain_wrapper.h" #include "streams/php_stream_glob_wrapper.h" #include "streams/php_stream_userspace.h" #include "streams/php_stream_mmap.h" /* coerce the stream into some other form */ /* cast as a stdio FILE * */ #define PHP_STREAM_AS_STDIO 0 /* cast as a POSIX fd or socketd */ #define PHP_STREAM_AS_FD 1 /* cast as a socketd */ #define PHP_STREAM_AS_SOCKETD 2 /* cast as fd/socket for select purposes */ #define PHP_STREAM_AS_FD_FOR_SELECT 3 /* try really, really hard to make sure the cast happens (avoid using this flag if possible) */ #define PHP_STREAM_CAST_TRY_HARD 0x80000000 #define PHP_STREAM_CAST_RELEASE 0x40000000 /* stream becomes invalid on success */ #define PHP_STREAM_CAST_INTERNAL 0x20000000 /* stream cast for internal use */ #define PHP_STREAM_CAST_MASK (PHP_STREAM_CAST_TRY_HARD | PHP_STREAM_CAST_RELEASE | PHP_STREAM_CAST_INTERNAL) BEGIN_EXTERN_C() PHPAPI int _php_stream_cast(php_stream *stream, int castas, void **ret, int show_err); END_EXTERN_C() /* use this to check if a stream can be cast into another form */ #define php_stream_can_cast(stream, as) _php_stream_cast((stream), (as), NULL, 0) #define php_stream_cast(stream, as, ret, show_err) _php_stream_cast((stream), (as), (ret), (show_err)) /* use this to check if a stream is of a particular type: * PHPAPI int php_stream_is(php_stream *stream, php_stream_ops *ops); */ #define php_stream_is(stream, anops) ((stream)->ops == anops) #define PHP_STREAM_IS_STDIO &php_stream_stdio_ops #define php_stream_is_persistent(stream) (stream)->is_persistent /* Wrappers support */ #define IGNORE_PATH 0x00000000 #define USE_PATH 0x00000001 #define IGNORE_URL 0x00000002 #define REPORT_ERRORS 0x00000008 /* If you don't need to write to the stream, but really need to * be able to seek, use this flag in your options. */ #define STREAM_MUST_SEEK 0x00000010 /* If you are going to end up casting the stream into a FILE* or * a socket, pass this flag and the streams/wrappers will not use * buffering mechanisms while reading the headers, so that HTTP * wrapped streams will work consistently. * If you omit this flag, streams will use buffering and should end * up working more optimally. * */ #define STREAM_WILL_CAST 0x00000020 /* this flag applies to php_stream_locate_url_wrapper */ #define STREAM_LOCATE_WRAPPERS_ONLY 0x00000040 /* this flag is only used by include/require functions */ #define STREAM_OPEN_FOR_INCLUDE 0x00000080 /* this flag tells streams to ONLY open urls */ #define STREAM_USE_URL 0x00000100 /* this flag is used when only the headers from HTTP request are to be fetched */ #define STREAM_ONLY_GET_HEADERS 0x00000200 /* don't apply open_basedir checks */ #define STREAM_DISABLE_OPEN_BASEDIR 0x00000400 /* get (or create) a persistent version of the stream */ #define STREAM_OPEN_PERSISTENT 0x00000800 /* use glob stream for directory open in plain files stream */ #define STREAM_USE_GLOB_DIR_OPEN 0x00001000 /* don't check allow_url_fopen and allow_url_include */ #define STREAM_DISABLE_URL_PROTECTION 0x00002000 /* assume the path passed in exists and is fully expanded, avoiding syscalls */ #define STREAM_ASSUME_REALPATH 0x00004000 /* Allow blocking reads on anonymous pipes on Windows. */ #define STREAM_USE_BLOCKING_PIPE 0x00008000 /* this flag is only used by include/require functions */ #define STREAM_OPEN_FOR_ZEND_STREAM 0x00010000 int php_init_stream_wrappers(int module_number); void php_shutdown_stream_wrappers(int module_number); void php_shutdown_stream_hashes(void); PHP_RSHUTDOWN_FUNCTION(streams); BEGIN_EXTERN_C() PHPAPI zend_result php_register_url_stream_wrapper(const char *protocol, const php_stream_wrapper *wrapper); PHPAPI zend_result php_unregister_url_stream_wrapper(const char *protocol); PHPAPI zend_result php_register_url_stream_wrapper_volatile(zend_string *protocol, php_stream_wrapper *wrapper); PHPAPI zend_result php_unregister_url_stream_wrapper_volatile(zend_string *protocol); PHPAPI php_stream *_php_stream_open_wrapper_ex(const char *path, const char *mode, int options, zend_string **opened_path, php_stream_context *context STREAMS_DC); PHPAPI php_stream_wrapper *php_stream_locate_url_wrapper(const char *path, const char **path_for_open, int options); PHPAPI const char *php_stream_locate_eol(php_stream *stream, zend_string *buf); #define php_stream_open_wrapper(path, mode, options, opened) _php_stream_open_wrapper_ex((path), (mode), (options), (opened), NULL STREAMS_CC) #define php_stream_open_wrapper_ex(path, mode, options, opened, context) _php_stream_open_wrapper_ex((path), (mode), (options), (opened), (context) STREAMS_CC) /* pushes an error message onto the stack for a wrapper instance */ PHPAPI void php_stream_wrapper_log_error(const php_stream_wrapper *wrapper, int options, const char *fmt, ...) PHP_ATTRIBUTE_FORMAT(printf, 3, 4); #define PHP_STREAM_UNCHANGED 0 /* orig stream was seekable anyway */ #define PHP_STREAM_RELEASED 1 /* newstream should be used; origstream is no longer valid */ #define PHP_STREAM_FAILED 2 /* an error occurred while attempting conversion */ #define PHP_STREAM_CRITICAL 3 /* an error occurred; origstream is in an unknown state; you should close origstream */ #define PHP_STREAM_NO_PREFERENCE 0 #define PHP_STREAM_PREFER_STDIO 1 #define PHP_STREAM_FORCE_CONVERSION 2 /* DO NOT call this on streams that are referenced by resources! */ PHPAPI int _php_stream_make_seekable(php_stream *origstream, php_stream **newstream, int flags STREAMS_DC); #define php_stream_make_seekable(origstream, newstream, flags) _php_stream_make_seekable((origstream), (newstream), (flags) STREAMS_CC) /* Give other modules access to the url_stream_wrappers_hash and stream_filters_hash */ PHPAPI HashTable *_php_stream_get_url_stream_wrappers_hash(void); #define php_stream_get_url_stream_wrappers_hash() _php_stream_get_url_stream_wrappers_hash() PHPAPI HashTable *php_stream_get_url_stream_wrappers_hash_global(void); PHPAPI HashTable *_php_get_stream_filters_hash(void); #define php_get_stream_filters_hash() _php_get_stream_filters_hash() PHPAPI HashTable *php_get_stream_filters_hash_global(void); extern const php_stream_wrapper_ops *php_stream_user_wrapper_ops; static inline bool php_is_stream_path(const char *filename) { const char *p; for (p = filename; (*p >= 'a' && *p <= 'z') || (*p >= 'A' && *p <= 'Z') || (*p >= '0' && *p <= '9') || *p == '+' || *p == '-' || *p == '.'; p++); return ((p != filename) && (p[0] == ':') && (p[1] == '/') && (p[2] == '/')); } END_EXTERN_C() #endif /* Definitions for user streams */ #define PHP_STREAM_IS_URL 1 /* Stream metadata definitions */ /* Create if referred resource does not exist */ #define PHP_STREAM_META_TOUCH 1 #define PHP_STREAM_META_OWNER_NAME 2 #define PHP_STREAM_META_OWNER 3 #define PHP_STREAM_META_GROUP_NAME 4 #define PHP_STREAM_META_GROUP 5 #define PHP_STREAM_META_ACCESS 6
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