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DEFINITIONS
This source file includes following definitions.
- php_stream_output_write
- php_stream_output_read
- php_stream_output_close
- php_stream_input_write
- php_stream_input_read
- php_stream_input_close
- php_stream_input_flush
- php_stream_apply_filter_list
- php_stream_url_wrap_php
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2013 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: 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;
}
/* }}} */
php_stream_ops php_stream_output_ops = {
php_stream_output_write,
php_stream_output_read,
php_stream_output_close,
NULL, /* 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) /* {{{ */
{
off_t *position = (off_t*)stream->abstract;
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 - *position;
if (read_bytes <= count) {
stream->eof = 1;
} else {
read_bytes = count;
}
if (read_bytes) {
memcpy(buf, SG(request_info).raw_post_data + *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;
}
/* Increment SG(read_post_bytes) only when something was actually read. */
SG(read_post_bytes) += read_bytes;
} else {
stream->eof = 1;
}
}
*position += read_bytes;
return read_bytes;
}
/* }}} */
static int php_stream_input_close(php_stream *stream, int close_handle TSRMLS_DC) /* {{{ */
{
efree(stream->abstract);
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) {
php_url_decode(p, strlen(p));
if (read_chain) {
if ((temp_filter = php_stream_filter_create(p, NULL, 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)", p);
}
}
if (write_chain) {
if ((temp_filter = php_stream_filter_create(p, NULL, 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)", 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;
long max_memory;
FILE *file = NULL;
if (!strncasecmp(path, "php://", 6)) {
path += 6;
}
if (!strncasecmp(path, "temp", 4)) {
path += 4;
max_memory = PHP_STREAM_MAX_MEM;
if (!strncasecmp(path, "/maxmemory:", 11)) {
path += 11;
max_memory = strtol(path, NULL, 10);
if (max_memory < 0) {
php_error_docref(NULL TSRMLS_CC, E_RECOVERABLE_ERROR, "Max memory must be >= 0");
return NULL;
}
}
if (strpbrk(mode, "wa+")) {
mode_rw = TEMP_STREAM_DEFAULT;
} else {
mode_rw = TEMP_STREAM_READONLY;
}
return php_stream_temp_create(mode_rw, max_memory);
}
if (!strcasecmp(path, "memory")) {
if (strpbrk(mode, "wa+")) {
mode_rw = TEMP_STREAM_DEFAULT;
} else {
mode_rw = TEMP_STREAM_READONLY;
}
return php_stream_memory_create(mode_rw);
}
if (!strcasecmp(path, "output")) {
return php_stream_alloc(&php_stream_output_ops, NULL, 0, "wb");
}
if (!strcasecmp(path, "input")) {
if ((options & STREAM_OPEN_FOR_INCLUDE) && !PG(allow_url_include) ) {
if (options & REPORT_ERRORS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "URL file-access is disabled in the server configuration");
}
return NULL;
}
return php_stream_alloc(&php_stream_input_ops, ecalloc(1, sizeof(off_t)), 0, "rb");
}
if (!strcasecmp(path, "stdin")) {
if ((options & STREAM_OPEN_FOR_INCLUDE) && !PG(allow_url_include) ) {
if (options & REPORT_ERRORS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "URL file-access is disabled in the server configuration");
}
return NULL;
}
if (!strcmp(sapi_module.name, "cli")) {
static int cli_in = 0;
fd = STDIN_FILENO;
if (cli_in) {
fd = dup(fd);
} else {
cli_in = 1;
file = stdin;
}
} else {
fd = dup(STDIN_FILENO);
}
} else if (!strcasecmp(path, "stdout")) {
if (!strcmp(sapi_module.name, "cli")) {
static int cli_out = 0;
fd = STDOUT_FILENO;
if (cli_out++) {
fd = dup(fd);
} else {
cli_out = 1;
file = stdout;
}
} else {
fd = dup(STDOUT_FILENO);
}
} else if (!strcasecmp(path, "stderr")) {
if (!strcmp(sapi_module.name, "cli")) {
static int cli_err = 0;
fd = STDERR_FILENO;
if (cli_err++) {
fd = dup(fd);
} else {
cli_err = 1;
file = stderr;
}
} else {
fd = dup(STDERR_FILENO);
}
} else if (!strncasecmp(path, "fd/", 3)) {
char *start,
*end;
long fildes_ori;
int dtablesize;
if (strcmp(sapi_module.name, "cli")) {
if (options & REPORT_ERRORS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Direct access to file descriptors is only available from command-line PHP");
}
return NULL;
}
if ((options & STREAM_OPEN_FOR_INCLUDE) && !PG(allow_url_include) ) {
if (options & REPORT_ERRORS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "URL file-access is disabled in the server configuration");
}
return NULL;
}
start = &path[3];
fildes_ori = strtol(start, &end, 10);
if (end == start || *end != '\0') {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC,
"php://fd/ stream must be specified in the form php://fd/<orig fd>");
return NULL;
}
#if HAVE_UNISTD_H
dtablesize = getdtablesize();
#else
dtablesize = INT_MAX;
#endif
if (fildes_ori < 0 || fildes_ori >= dtablesize) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC,
"The file descriptors must be non-negative numbers smaller than %d", dtablesize);
return NULL;
}
fd = dup(fildes_ori);
if (fd == -1) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC,
"Error duping file descriptor %ld; possibly it doesn't exist: "
"[%d]: %s", fildes_ori, errno, strerror(errno));
return NULL;
}
} else 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_RECOVERABLE_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;
} else {
/* invalid php://thingy */
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid php:// URL specified");
return NULL;
}
/* must be stdin, stderr or stdout */
if (fd == -1) {
/* failed to dup */
return NULL;
}
#if defined(S_IFSOCK) && !defined(WIN32) && !defined(__BEOS__)
do {
struct stat st;
memset(&st, 0, sizeof(st));
if (fstat(fd, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
stream = php_stream_sock_open_from_socket(fd, NULL);
if (stream) {
stream->ops = &php_stream_socket_ops;
return stream;
}
}
} while (0);
#endif
if (file) {
stream = php_stream_fopen_from_file(file, mode);
} else {
stream = php_stream_fopen_from_fd(fd, mode, NULL);
if (stream == NULL) {
close(fd);
}
}
return stream;
}
/* }}} */
static php_stream_wrapper_ops php_stdio_wops = {
php_stream_url_wrap_php,
NULL, /* close */
NULL, /* fstat */
NULL, /* stat */
NULL, /* opendir */
"PHP",
NULL, /* unlink */
NULL, /* rename */
NULL, /* mkdir */
NULL /* rmdir */
};
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
*/