/
plain_wrapper.c
1433 lines (1208 loc) · 35.8 KB
/
plain_wrapper.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2009 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: Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "php_globals.h"
#include "php_network.h"
#include "php_open_temporary_file.h"
#include "ext/standard/file.h"
#include "ext/standard/flock_compat.h"
#include "ext/standard/php_filestat.h"
#include <stddef.h>
#include <fcntl.h>
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include "SAPI.h"
#include "php_streams_int.h"
#define php_stream_fopen_from_fd_int(fd, mode, persistent_id) _php_stream_fopen_from_fd_int((fd), (mode), (persistent_id) STREAMS_CC TSRMLS_CC)
#define php_stream_fopen_from_fd_int_rel(fd, mode, persistent_id) _php_stream_fopen_from_fd_int((fd), (mode), (persistent_id) STREAMS_REL_CC TSRMLS_CC)
#define php_stream_fopen_from_file_int(file, mode) _php_stream_fopen_from_file_int((file), (mode) STREAMS_CC TSRMLS_CC)
#define php_stream_fopen_from_file_int_rel(file, mode) _php_stream_fopen_from_file_int((file), (mode) STREAMS_REL_CC TSRMLS_CC)
/* parse standard "fopen" modes into open() flags */
PHPAPI int php_stream_parse_fopen_modes(const char *mode, int *open_flags)
{
int flags;
switch (mode[0]) {
case 'r':
flags = 0;
break;
case 'w':
flags = O_TRUNC|O_CREAT;
break;
case 'a':
flags = O_CREAT|O_APPEND;
break;
case 'x':
flags = O_CREAT|O_EXCL;
break;
case 'c':
flags = O_CREAT;
break;
default:
/* unknown mode */
return FAILURE;
}
if (strchr(mode, '+')) {
flags |= O_RDWR;
} else if (flags) {
flags |= O_WRONLY;
} else {
flags |= O_RDONLY;
}
#if defined(_O_TEXT) && defined(O_BINARY)
if (strchr(mode, 't')) {
flags |= _O_TEXT;
} else {
flags |= O_BINARY;
}
#endif
*open_flags = flags;
return SUCCESS;
}
/* {{{ ------- STDIO stream implementation -------*/
typedef struct {
FILE *file;
int fd; /* underlying file descriptor */
unsigned is_process_pipe:1; /* use pclose instead of fclose */
unsigned is_pipe:1; /* don't try and seek */
unsigned cached_fstat:1; /* sb is valid */
unsigned _reserved:29;
int lock_flag; /* stores the lock state */
char *temp_file_name; /* if non-null, this is the path to a temporary file that
* is to be deleted when the stream is closed */
#if HAVE_FLUSHIO
char last_op;
#endif
#if HAVE_MMAP
char *last_mapped_addr;
size_t last_mapped_len;
#endif
#ifdef PHP_WIN32
char *last_mapped_addr;
HANDLE file_mapping;
#endif
struct stat sb;
} php_stdio_stream_data;
#define PHP_STDIOP_GET_FD(anfd, data) anfd = (data)->file ? fileno((data)->file) : (data)->fd
static int do_fstat(php_stdio_stream_data *d, int force)
{
if (!d->cached_fstat || force) {
int fd;
int r;
PHP_STDIOP_GET_FD(fd, d);
r = fstat(fd, &d->sb);
d->cached_fstat = r == 0;
return r;
}
return 0;
}
static php_stream *_php_stream_fopen_from_fd_int(int fd, const char *mode, const char *persistent_id STREAMS_DC TSRMLS_DC)
{
php_stdio_stream_data *self;
self = pemalloc_rel_orig(sizeof(*self), persistent_id);
memset(self, 0, sizeof(*self));
self->file = NULL;
self->is_pipe = 0;
self->lock_flag = LOCK_UN;
self->is_process_pipe = 0;
self->temp_file_name = NULL;
self->fd = fd;
return php_stream_alloc_rel(&php_stream_stdio_ops, self, persistent_id, mode);
}
static php_stream *_php_stream_fopen_from_file_int(FILE *file, const char *mode STREAMS_DC TSRMLS_DC)
{
php_stdio_stream_data *self;
self = emalloc_rel_orig(sizeof(*self));
memset(self, 0, sizeof(*self));
self->file = file;
self->is_pipe = 0;
self->lock_flag = LOCK_UN;
self->is_process_pipe = 0;
self->temp_file_name = NULL;
self->fd = fileno(file);
return php_stream_alloc_rel(&php_stream_stdio_ops, self, 0, mode);
}
PHPAPI php_stream *_php_stream_fopen_temporary_file(const char *dir, const char *pfx, char **opened_path STREAMS_DC TSRMLS_DC)
{
int fd = php_open_temporary_fd(dir, pfx, opened_path TSRMLS_CC);
if (fd != -1) {
php_stream *stream = php_stream_fopen_from_fd_int_rel(fd, "r+b", NULL);
if (stream) {
return stream;
}
close(fd);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to allocate stream");
return NULL;
}
return NULL;
}
PHPAPI php_stream *_php_stream_fopen_tmpfile(int dummy STREAMS_DC TSRMLS_DC)
{
char *opened_path = NULL;
int fd = php_open_temporary_fd(NULL, "php", &opened_path TSRMLS_CC);
if (fd != -1) {
php_stream *stream = php_stream_fopen_from_fd_int_rel(fd, "r+b", NULL);
if (stream) {
php_stdio_stream_data *self = (php_stdio_stream_data*)stream->abstract;
stream->wrapper = &php_plain_files_wrapper;
stream->orig_path = estrdup(opened_path);
self->temp_file_name = opened_path;
self->lock_flag = LOCK_UN;
return stream;
}
close(fd);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to allocate stream");
return NULL;
}
return NULL;
}
PHPAPI php_stream *_php_stream_fopen_from_fd(int fd, const char *mode, const char *persistent_id STREAMS_DC TSRMLS_DC)
{
php_stream *stream = php_stream_fopen_from_fd_int_rel(fd, mode, persistent_id);
if (stream) {
php_stdio_stream_data *self = (php_stdio_stream_data*)stream->abstract;
#ifdef S_ISFIFO
/* detect if this is a pipe */
if (self->fd >= 0) {
self->is_pipe = (do_fstat(self, 0) == 0 && S_ISFIFO(self->sb.st_mode)) ? 1 : 0;
}
#elif defined(PHP_WIN32)
{
zend_uintptr_t handle = _get_osfhandle(self->fd);
if (handle != (zend_uintptr_t)INVALID_HANDLE_VALUE) {
self->is_pipe = GetFileType((HANDLE)handle) == FILE_TYPE_PIPE;
}
}
#endif
if (self->is_pipe) {
stream->flags |= PHP_STREAM_FLAG_NO_SEEK;
} else {
stream->position = lseek(self->fd, 0, SEEK_CUR);
#ifdef ESPIPE
if (stream->position == (off_t)-1 && errno == ESPIPE) {
stream->position = 0;
stream->flags |= PHP_STREAM_FLAG_NO_SEEK;
self->is_pipe = 1;
}
#endif
}
}
return stream;
}
PHPAPI php_stream *_php_stream_fopen_from_file(FILE *file, const char *mode STREAMS_DC TSRMLS_DC)
{
php_stream *stream = php_stream_fopen_from_file_int_rel(file, mode);
if (stream) {
php_stdio_stream_data *self = (php_stdio_stream_data*)stream->abstract;
#ifdef S_ISFIFO
/* detect if this is a pipe */
if (self->fd >= 0) {
self->is_pipe = (do_fstat(self, 0) == 0 && S_ISFIFO(self->sb.st_mode)) ? 1 : 0;
}
#elif defined(PHP_WIN32)
{
zend_uintptr_t handle = _get_osfhandle(self->fd);
if (handle != (zend_uintptr_t)INVALID_HANDLE_VALUE) {
self->is_pipe = GetFileType((HANDLE)handle) == FILE_TYPE_PIPE;
}
}
#endif
if (self->is_pipe) {
stream->flags |= PHP_STREAM_FLAG_NO_SEEK;
} else {
stream->position = ftell(file);
}
}
return stream;
}
PHPAPI php_stream *_php_stream_fopen_from_pipe(FILE *file, const char *mode STREAMS_DC TSRMLS_DC)
{
php_stdio_stream_data *self;
php_stream *stream;
self = emalloc_rel_orig(sizeof(*self));
memset(self, 0, sizeof(*self));
self->file = file;
self->is_pipe = 1;
self->lock_flag = LOCK_UN;
self->is_process_pipe = 1;
self->fd = fileno(file);
self->temp_file_name = NULL;
stream = php_stream_alloc_rel(&php_stream_stdio_ops, self, 0, mode);
stream->flags |= PHP_STREAM_FLAG_NO_SEEK;
return stream;
}
static size_t php_stdiop_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC)
{
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
assert(data != NULL);
if (data->fd >= 0) {
int bytes_written = write(data->fd, buf, count);
if (bytes_written < 0) return 0;
return (size_t) bytes_written;
} else {
#if HAVE_FLUSHIO
if (!data->is_pipe && data->last_op == 'r') {
fseek(data->file, 0, SEEK_CUR);
}
data->last_op = 'w';
#endif
return fwrite(buf, 1, count, data->file);
}
}
static size_t php_stdiop_read(php_stream *stream, char *buf, size_t count TSRMLS_DC)
{
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
size_t ret;
assert(data != NULL);
if (data->fd >= 0) {
ret = read(data->fd, buf, count);
if (ret == (size_t)-1 && errno == EINTR) {
/* Read was interrupted, retry once,
If read still fails, giveup with feof==0
so script can retry if desired */
ret = read(data->fd, buf, count);
}
stream->eof = (ret == 0 || (ret == (size_t)-1 && errno != EWOULDBLOCK && errno != EINTR && errno != EBADF));
} else {
#if HAVE_FLUSHIO
if (!data->is_pipe && data->last_op == 'w')
fseek(data->file, 0, SEEK_CUR);
data->last_op = 'r';
#endif
ret = fread(buf, 1, count, data->file);
stream->eof = feof(data->file);
}
return ret;
}
static int php_stdiop_close(php_stream *stream, int close_handle TSRMLS_DC)
{
int ret;
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
assert(data != NULL);
#if HAVE_MMAP
if (data->last_mapped_addr) {
munmap(data->last_mapped_addr, data->last_mapped_len);
data->last_mapped_addr = NULL;
}
#elif defined(PHP_WIN32)
if (data->last_mapped_addr) {
UnmapViewOfFile(data->last_mapped_addr);
data->last_mapped_addr = NULL;
}
if (data->file_mapping) {
CloseHandle(data->file_mapping);
data->file_mapping = NULL;
}
#endif
if (close_handle) {
if (data->lock_flag != LOCK_UN) {
php_stream_lock(stream, LOCK_UN);
}
if (data->file) {
if (data->is_process_pipe) {
errno = 0;
ret = pclose(data->file);
#if HAVE_SYS_WAIT_H
if (WIFEXITED(ret)) {
ret = WEXITSTATUS(ret);
}
#endif
} else {
ret = fclose(data->file);
data->file = NULL;
}
} else if (data->fd != -1) {
ret = close(data->fd);
data->fd = -1;
} else {
return 0; /* everything should be closed already -> success */
}
if (data->temp_file_name) {
unlink(data->temp_file_name);
/* temporary streams are never persistent */
efree(data->temp_file_name);
data->temp_file_name = NULL;
}
} else {
ret = 0;
data->file = NULL;
data->fd = -1;
}
pefree(data, stream->is_persistent);
return ret;
}
static int php_stdiop_flush(php_stream *stream TSRMLS_DC)
{
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
assert(data != NULL);
/*
* stdio buffers data in user land. By calling fflush(3), this
* data is send to the kernel using write(2). fsync'ing is
* something completely different.
*/
if (data->file) {
return fflush(data->file);
}
return 0;
}
static int php_stdiop_seek(php_stream *stream, off_t offset, int whence, off_t *newoffset TSRMLS_DC)
{
php_stdio_stream_data *data = (php_stdio_stream_data*)stream->abstract;
int ret;
assert(data != NULL);
if (data->is_pipe) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "cannot seek on a pipe");
return -1;
}
if (data->fd >= 0) {
off_t result;
result = lseek(data->fd, offset, whence);
if (result == (off_t)-1)
return -1;
*newoffset = result;
return 0;
} else {
ret = fseek(data->file, offset, whence);
*newoffset = ftell(data->file);
return ret;
}
}
static int php_stdiop_cast(php_stream *stream, int castas, void **ret TSRMLS_DC)
{
int fd;
php_stdio_stream_data *data = (php_stdio_stream_data*) stream->abstract;
assert(data != NULL);
/* as soon as someone touches the stdio layer, buffering may ensue,
* so we need to stop using the fd directly in that case */
switch (castas) {
case PHP_STREAM_AS_STDIO:
if (ret) {
if (data->file == NULL) {
/* we were opened as a plain file descriptor, so we
* need fdopen now */
data->file = fdopen(data->fd, stream->mode);
if (data->file == NULL) {
return FAILURE;
}
}
*(FILE**)ret = data->file;
data->fd = -1;
}
return SUCCESS;
case PHP_STREAM_AS_FD_FOR_SELECT:
PHP_STDIOP_GET_FD(fd, data);
if (fd < 0) {
return FAILURE;
}
if (ret) {
*(int*)ret = fd;
}
return SUCCESS;
case PHP_STREAM_AS_FD:
PHP_STDIOP_GET_FD(fd, data);
if (fd < 0) {
return FAILURE;
}
if (data->file) {
fflush(data->file);
}
if (ret) {
*(int*)ret = fd;
}
return SUCCESS;
default:
return FAILURE;
}
}
static int php_stdiop_stat(php_stream *stream, php_stream_statbuf *ssb TSRMLS_DC)
{
int ret;
php_stdio_stream_data *data = (php_stdio_stream_data*) stream->abstract;
assert(data != NULL);
ret = do_fstat(data, 1);
memcpy(&ssb->sb, &data->sb, sizeof(ssb->sb));
return ret;
}
static int php_stdiop_set_option(php_stream *stream, int option, int value, void *ptrparam TSRMLS_DC)
{
php_stdio_stream_data *data = (php_stdio_stream_data*) stream->abstract;
size_t size;
int fd;
#ifdef O_NONBLOCK
/* FIXME: make this work for win32 */
int flags;
int oldval;
#endif
PHP_STDIOP_GET_FD(fd, data);
switch(option) {
case PHP_STREAM_OPTION_BLOCKING:
if (fd == -1)
return -1;
#ifdef O_NONBLOCK
flags = fcntl(fd, F_GETFL, 0);
oldval = (flags & O_NONBLOCK) ? 0 : 1;
if (value)
flags &= ~O_NONBLOCK;
else
flags |= O_NONBLOCK;
if (-1 == fcntl(fd, F_SETFL, flags))
return -1;
return oldval;
#else
return -1; /* not yet implemented */
#endif
case PHP_STREAM_OPTION_WRITE_BUFFER:
if (data->file == NULL) {
return -1;
}
if (ptrparam)
size = *(size_t *)ptrparam;
else
size = BUFSIZ;
switch(value) {
case PHP_STREAM_BUFFER_NONE:
stream->flags |= PHP_STREAM_FLAG_NO_BUFFER;
return setvbuf(data->file, NULL, _IONBF, 0);
case PHP_STREAM_BUFFER_LINE:
stream->flags ^= PHP_STREAM_FLAG_NO_BUFFER;
return setvbuf(data->file, NULL, _IOLBF, size);
case PHP_STREAM_BUFFER_FULL:
stream->flags ^= PHP_STREAM_FLAG_NO_BUFFER;
return setvbuf(data->file, NULL, _IOFBF, size);
default:
return -1;
}
break;
case PHP_STREAM_OPTION_LOCKING:
if (fd == -1) {
return -1;
}
if ((zend_uintptr_t) ptrparam == PHP_STREAM_LOCK_SUPPORTED) {
return 0;
}
if (!flock(fd, value)) {
data->lock_flag = value;
return 0;
} else {
return -1;
}
break;
case PHP_STREAM_OPTION_MMAP_API:
#if HAVE_MMAP
{
php_stream_mmap_range *range = (php_stream_mmap_range*)ptrparam;
int prot, flags;
switch (value) {
case PHP_STREAM_MMAP_SUPPORTED:
return fd == -1 ? PHP_STREAM_OPTION_RETURN_ERR : PHP_STREAM_OPTION_RETURN_OK;
case PHP_STREAM_MMAP_MAP_RANGE:
do_fstat(data, 1);
if (range->length == 0 && range->offset > 0 && range->offset < data->sb.st_size) {
range->length = data->sb.st_size - range->offset;
}
if (range->length == 0 || range->length > data->sb.st_size) {
range->length = data->sb.st_size;
}
if (range->offset >= data->sb.st_size) {
range->offset = data->sb.st_size;
range->length = 0;
}
switch (range->mode) {
case PHP_STREAM_MAP_MODE_READONLY:
prot = PROT_READ;
flags = MAP_PRIVATE;
break;
case PHP_STREAM_MAP_MODE_READWRITE:
prot = PROT_READ | PROT_WRITE;
flags = MAP_PRIVATE;
break;
case PHP_STREAM_MAP_MODE_SHARED_READONLY:
prot = PROT_READ;
flags = MAP_SHARED;
break;
case PHP_STREAM_MAP_MODE_SHARED_READWRITE:
prot = PROT_READ | PROT_WRITE;
flags = MAP_SHARED;
break;
default:
return PHP_STREAM_OPTION_RETURN_ERR;
}
range->mapped = (char*)mmap(NULL, range->length, prot, flags, fd, range->offset);
if (range->mapped == (char*)MAP_FAILED) {
range->mapped = NULL;
return PHP_STREAM_OPTION_RETURN_ERR;
}
/* remember the mapping */
data->last_mapped_addr = range->mapped;
data->last_mapped_len = range->length;
return PHP_STREAM_OPTION_RETURN_OK;
case PHP_STREAM_MMAP_UNMAP:
if (data->last_mapped_addr) {
munmap(data->last_mapped_addr, data->last_mapped_len);
data->last_mapped_addr = NULL;
return PHP_STREAM_OPTION_RETURN_OK;
}
return PHP_STREAM_OPTION_RETURN_ERR;
}
}
#elif defined(PHP_WIN32)
{
php_stream_mmap_range *range = (php_stream_mmap_range*)ptrparam;
HANDLE hfile = (HANDLE)_get_osfhandle(fd);
DWORD prot, acc, loffs = 0, delta = 0;
switch (value) {
case PHP_STREAM_MMAP_SUPPORTED:
return hfile == INVALID_HANDLE_VALUE ? PHP_STREAM_OPTION_RETURN_ERR : PHP_STREAM_OPTION_RETURN_OK;
case PHP_STREAM_MMAP_MAP_RANGE:
switch (range->mode) {
case PHP_STREAM_MAP_MODE_READONLY:
prot = PAGE_READONLY;
acc = FILE_MAP_READ;
break;
case PHP_STREAM_MAP_MODE_READWRITE:
prot = PAGE_READWRITE;
acc = FILE_MAP_READ | FILE_MAP_WRITE;
break;
case PHP_STREAM_MAP_MODE_SHARED_READONLY:
prot = PAGE_READONLY;
acc = FILE_MAP_READ;
/* TODO: we should assign a name for the mapping */
break;
case PHP_STREAM_MAP_MODE_SHARED_READWRITE:
prot = PAGE_READWRITE;
acc = FILE_MAP_READ | FILE_MAP_WRITE;
/* TODO: we should assign a name for the mapping */
break;
}
/* create a mapping capable of viewing the whole file (this costs no real resources) */
data->file_mapping = CreateFileMapping(hfile, NULL, prot, 0, 0, NULL);
if (data->file_mapping == NULL) {
return PHP_STREAM_OPTION_RETURN_ERR;
}
size = GetFileSize(hfile, NULL);
if (range->length == 0 && range->offset > 0 && range->offset < size) {
range->length = size - range->offset;
}
if (range->length == 0 || range->length > size) {
range->length = size;
}
if (range->offset >= size) {
range->offset = size;
range->length = 0;
}
/* figure out how big a chunk to map to be able to view the part that we need */
if (range->offset != 0) {
SYSTEM_INFO info;
DWORD gran;
GetSystemInfo(&info);
gran = info.dwAllocationGranularity;
loffs = (range->offset / gran) * gran;
delta = range->offset - loffs;
}
data->last_mapped_addr = MapViewOfFile(data->file_mapping, acc, 0, loffs, range->length + delta);
if (data->last_mapped_addr) {
/* give them back the address of the start offset they requested */
range->mapped = data->last_mapped_addr + delta;
return PHP_STREAM_OPTION_RETURN_OK;
}
CloseHandle(data->file_mapping);
data->file_mapping = NULL;
return PHP_STREAM_OPTION_RETURN_ERR;
case PHP_STREAM_MMAP_UNMAP:
if (data->last_mapped_addr) {
UnmapViewOfFile(data->last_mapped_addr);
data->last_mapped_addr = NULL;
CloseHandle(data->file_mapping);
data->file_mapping = NULL;
return PHP_STREAM_OPTION_RETURN_OK;
}
return PHP_STREAM_OPTION_RETURN_ERR;
default:
return PHP_STREAM_OPTION_RETURN_ERR;
}
}
#endif
return PHP_STREAM_OPTION_RETURN_NOTIMPL;
case PHP_STREAM_OPTION_TRUNCATE_API:
switch (value) {
case PHP_STREAM_TRUNCATE_SUPPORTED:
return fd == -1 ? PHP_STREAM_OPTION_RETURN_ERR : PHP_STREAM_OPTION_RETURN_OK;
case PHP_STREAM_TRUNCATE_SET_SIZE: {
ptrdiff_t new_size = *(ptrdiff_t*)ptrparam;
if (new_size < 0) {
return PHP_STREAM_OPTION_RETURN_ERR;
}
return ftruncate(fd, new_size) == 0 ? PHP_STREAM_OPTION_RETURN_OK : PHP_STREAM_OPTION_RETURN_ERR;
}
}
default:
return PHP_STREAM_OPTION_RETURN_NOTIMPL;
}
}
PHPAPI php_stream_ops php_stream_stdio_ops = {
php_stdiop_write, php_stdiop_read,
php_stdiop_close, php_stdiop_flush,
"STDIO",
php_stdiop_seek,
php_stdiop_cast,
php_stdiop_stat,
php_stdiop_set_option
};
/* }}} */
/* {{{ plain files opendir/readdir implementation */
static size_t php_plain_files_dirstream_read(php_stream *stream, char *buf, size_t count TSRMLS_DC)
{
DIR *dir = (DIR*)stream->abstract;
/* avoid libc5 readdir problems */
char entry[sizeof(struct dirent)+MAXPATHLEN];
struct dirent *result = (struct dirent *)&entry;
php_stream_dirent *ent = (php_stream_dirent*)buf;
/* avoid problems if someone mis-uses the stream */
if (count != sizeof(php_stream_dirent))
return 0;
if (php_readdir_r(dir, (struct dirent *)entry, &result) == 0 && result) {
PHP_STRLCPY(ent->d_name, result->d_name, sizeof(ent->d_name), strlen(result->d_name));
return sizeof(php_stream_dirent);
}
return 0;
}
static int php_plain_files_dirstream_close(php_stream *stream, int close_handle TSRMLS_DC)
{
return closedir((DIR *)stream->abstract);
}
static int php_plain_files_dirstream_rewind(php_stream *stream, off_t offset, int whence, off_t *newoffs TSRMLS_DC)
{
rewinddir((DIR *)stream->abstract);
return 0;
}
static php_stream_ops php_plain_files_dirstream_ops = {
NULL, php_plain_files_dirstream_read,
php_plain_files_dirstream_close, NULL,
"dir",
php_plain_files_dirstream_rewind,
NULL, /* cast */
NULL, /* stat */
NULL /* set_option */
};
static php_stream *php_plain_files_dir_opener(php_stream_wrapper *wrapper, char *path, char *mode,
int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)
{
DIR *dir = NULL;
php_stream *stream = NULL;
if (((options & STREAM_DISABLE_OPEN_BASEDIR) == 0) && php_check_open_basedir(path TSRMLS_CC)) {
return NULL;
}
if (PG(safe_mode) &&(!php_checkuid(path, NULL, CHECKUID_CHECK_FILE_AND_DIR))) {
return NULL;
}
dir = VCWD_OPENDIR(path);
#ifdef PHP_WIN32
if (dir && dir->finished) {
closedir(dir);
dir = NULL;
}
#endif
if (dir) {
stream = php_stream_alloc(&php_plain_files_dirstream_ops, dir, 0, mode);
if (stream == NULL)
closedir(dir);
}
return stream;
}
/* }}} */
/* {{{ php_stream_fopen */
PHPAPI php_stream *_php_stream_fopen(const char *filename, const char *mode, char **opened_path, int options STREAMS_DC TSRMLS_DC)
{
char *realpath = NULL;
int open_flags;
int fd;
php_stream *ret;
int persistent = options & STREAM_OPEN_PERSISTENT;
char *persistent_id = NULL;
if (FAILURE == php_stream_parse_fopen_modes(mode, &open_flags)) {
if (options & REPORT_ERRORS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "`%s' is not a valid mode for fopen", mode);
}
return NULL;
}
if ((realpath = expand_filepath(filename, NULL TSRMLS_CC)) == NULL) {
return NULL;
}
if (persistent) {
spprintf(&persistent_id, 0, "streams_stdio_%d_%s", open_flags, realpath);
switch (php_stream_from_persistent_id(persistent_id, &ret TSRMLS_CC)) {
case PHP_STREAM_PERSISTENT_SUCCESS:
if (opened_path) {
*opened_path = realpath;
realpath = NULL;
}
/* fall through */
case PHP_STREAM_PERSISTENT_FAILURE:
if (realpath) {
efree(realpath);
}
efree(persistent_id);;
return ret;
}
}
fd = open(realpath, open_flags, 0666);
if (fd != -1) {
if (options & STREAM_OPEN_FOR_INCLUDE) {
ret = php_stream_fopen_from_fd_int_rel(fd, mode, persistent_id);
} else {
ret = php_stream_fopen_from_fd_rel(fd, mode, persistent_id);
}
if (ret) {
if (opened_path) {
*opened_path = realpath;
realpath = NULL;
}
if (realpath) {
efree(realpath);
}
if (persistent_id) {
efree(persistent_id);
}
/* WIN32 always set ISREG flag */
#ifndef PHP_WIN32
/* sanity checks for include/require.
* We check these after opening the stream, so that we save
* on fstat() syscalls */
if (options & STREAM_OPEN_FOR_INCLUDE) {
php_stdio_stream_data *self = (php_stdio_stream_data*)ret->abstract;
int r;
r = do_fstat(self, 0);
if ((r == 0 && !S_ISREG(self->sb.st_mode))) {
if (opened_path) {
efree(*opened_path);
*opened_path = NULL;
}
php_stream_close(ret);
return NULL;
}
}
#endif
return ret;
}
close(fd);
}
efree(realpath);
if (persistent_id) {
efree(persistent_id);
}
return NULL;
}
/* }}} */
static php_stream *php_plain_files_stream_opener(php_stream_wrapper *wrapper, char *path, char *mode,
int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)
{
if ((options & USE_PATH) && PG(include_path) != NULL) {
return php_stream_fopen_with_path_rel(path, mode, PG(include_path), opened_path, options);
}
if (((options & STREAM_DISABLE_OPEN_BASEDIR) == 0) && php_check_open_basedir(path TSRMLS_CC)) {
return NULL;
}
if ((options & ENFORCE_SAFE_MODE) && PG(safe_mode) && (!php_checkuid(path, mode, CHECKUID_CHECK_MODE_PARAM)))
return NULL;
return php_stream_fopen_rel(path, mode, opened_path, options);
}
static int php_plain_files_url_stater(php_stream_wrapper *wrapper, char *url, int flags, php_stream_statbuf *ssb, php_stream_context *context TSRMLS_DC)
{
if (strncmp(url, "file://", sizeof("file://") - 1) == 0) {
url += sizeof("file://") - 1;
}
if (PG(safe_mode) &&(!php_checkuid_ex(url, NULL, CHECKUID_CHECK_FILE_AND_DIR, (flags & PHP_STREAM_URL_STAT_QUIET) ? CHECKUID_NO_ERRORS : 0))) {
return -1;
}
if (php_check_open_basedir_ex(url, (flags & PHP_STREAM_URL_STAT_QUIET) ? 0 : 1 TSRMLS_CC)) {