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|
/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.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: Rasmus Lerdorf <rasmus@php.net> |
| Jim Winstead <jimw@php.net> |
| Hartmut Holzgraefe <hholzgra@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include <stdio.h>
#include <stdlib.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "php.h"
#include "php_globals.h"
#include "php_standard.h"
#include "php_fopen_wrappers.h"
#include "SAPI.h"
static size_t php_stream_output_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC)
{
PHPWRITE(buf, count);
return count;
}
static size_t php_stream_output_read(php_stream *stream, char *buf, size_t count TSRMLS_DC)
{
stream->eof = 1;
return 0;
}
static int php_stream_output_close(php_stream *stream, int close_handle TSRMLS_DC)
{
return 0;
}
static int php_stream_output_flush(php_stream *stream TSRMLS_DC)
{
sapi_flush(TSRMLS_C);
return 0;
}
php_stream_ops php_stream_output_ops = {
php_stream_output_write,
php_stream_output_read,
php_stream_output_close,
php_stream_output_flush,
"Output",
NULL, /* seek */
NULL, /* cast */
NULL, /* stat */
NULL /* set_option */
};
static size_t php_stream_input_write(php_stream *stream, const char *buf, size_t count TSRMLS_DC)
{
return -1;
}
static size_t php_stream_input_read(php_stream *stream, char *buf, size_t count TSRMLS_DC)
{
size_t read_bytes = 0;
if(!stream->eof) {
if(SG(request_info).raw_post_data) { /* data has already been read by a post handler */
read_bytes = SG(request_info).raw_post_data_length - stream->position;
if(read_bytes <= count) {
stream->eof = 1;
} else {
read_bytes = count;
}
if(read_bytes) {
memcpy(buf, SG(request_info).raw_post_data + stream->position, read_bytes);
}
} else if(sapi_module.read_post) {
read_bytes = sapi_module.read_post(buf, count TSRMLS_CC);
if(read_bytes <= 0){
stream->eof = 1;
read_bytes = 0;
}
} else {
stream->eof = 1;
}
}
SG(read_post_bytes) += read_bytes;
return read_bytes;
}
static int php_stream_input_close(php_stream *stream, int close_handle TSRMLS_DC)
{
return 0;
}
static int php_stream_input_flush(php_stream *stream TSRMLS_DC)
{
return -1;
}
php_stream_ops php_stream_input_ops = {
php_stream_input_write,
php_stream_input_read,
php_stream_input_close,
php_stream_input_flush,
"Input",
NULL, /* seek */
NULL, /* cast */
NULL, /* stat */
NULL /* set_option */
};
static void php_stream_apply_filter_list(php_stream *stream, char *filterlist, int read_chain, int write_chain TSRMLS_DC) {
char *p, *token;
php_stream_filter *temp_filter;
p = php_strtok_r(filterlist, "|", &token);
while (p) {
if (read_chain) {
if (temp_filter = php_stream_filter_create(p, "", 0, php_stream_is_persistent(stream) TSRMLS_CC)) {
php_stream_filter_append(&stream->readfilters, temp_filter);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to create filter (%s)\n", p);
}
}
if (write_chain) {
if (temp_filter = php_stream_filter_create(p, "", 0, php_stream_is_persistent(stream) TSRMLS_CC)) {
php_stream_filter_append(&stream->writefilters, temp_filter);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to create filter (%s)\n", p);
}
}
p = php_strtok_r(NULL, "|", &token);
}
}
php_stream * php_stream_url_wrap_php(php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)
{
int fd = -1;
int mode_rw = 0;
php_stream * stream = NULL;
char *p, *token, *pathdup;
if (!strncasecmp(path, "php://", 6))
path += 6;
if (!strcasecmp(path, "output")) {
return php_stream_alloc(&php_stream_output_ops, NULL, 0, "wb");
}
if (!strcasecmp(path, "input")) {
return php_stream_alloc(&php_stream_input_ops, NULL, 0, "rb");
}
if (!strcasecmp(path, "stdin")) {
fd = dup(STDIN_FILENO);
} else if (!strcasecmp(path, "stdout")) {
fd = dup(STDOUT_FILENO);
} else if (!strcasecmp(path, "stderr")) {
fd = dup(STDERR_FILENO);
}
if (fd) {
stream = php_stream_fopen_from_fd(fd, mode);
if (stream == NULL)
close(fd);
}
if (!strncasecmp(path, "filter/", 7)) {
/* Save time/memory when chain isn't specified */
if (strchr(mode, 'r') || strchr(mode, '+')) {
mode_rw |= PHP_STREAM_FILTER_READ;
}
if (strchr(mode, 'w') || strchr(mode, '+') || strchr(mode, 'a')) {
mode_rw |= PHP_STREAM_FILTER_WRITE;
}
pathdup = estrndup(path + 6, strlen(path + 6));
p = strstr(pathdup, "/resource=");
if (!p) {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "No URL resource specified.");
efree(pathdup);
return NULL;
}
if (!(stream = php_stream_open_wrapper(p + 10, mode, options, opened_path))) {
efree(pathdup);
return NULL;
}
*p = '\0';
p = php_strtok_r(pathdup + 1, "/", &token);
while (p) {
if (!strncasecmp(p, "read=", 5)) {
php_stream_apply_filter_list(stream, p + 5, 1, 0 TSRMLS_CC);
} else if (!strncasecmp(p, "write=", 6)) {
php_stream_apply_filter_list(stream, p + 6, 0, 1 TSRMLS_CC);
} else {
php_stream_apply_filter_list(stream, p, mode_rw & PHP_STREAM_FILTER_READ, mode_rw & PHP_STREAM_FILTER_WRITE TSRMLS_CC);
}
p = php_strtok_r(NULL, "/", &token);
}
efree(pathdup);
}
return stream;
}
static php_stream_wrapper_ops php_stdio_wops = {
php_stream_url_wrap_php,
NULL, /* close */
NULL, /* fstat */
NULL, /* stat */
NULL, /* opendir */
"PHP"
};
php_stream_wrapper php_stream_php_wrapper = {
&php_stdio_wops,
NULL,
0, /* is_url */
};
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
|
