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2f4973fd88
Cf. <https://github.com/php/php-src/pull/10220#issuecomment-1383739816>. This reverts commit45a128c9de
. This reverts commit1eb71c3f15
. This reverts commit492523a779
. This reverts commitc7a4633891
. This reverts commit308adb915c
. This reverts commitcd27d5e07f
. This reverts commitc5933409b4
. This reverts commit46371f4eb3
. This reverts commit623e2e9fc6
. This reverts commite7434c1247
. This reverts commitd28d323ca2
. This reverts commit1a067b84ee
. This reverts commita55c0c5fc3
. This reverts commitb5aeb3a4d4
. This reverts commitf061a035e4
. This reverts commitb088575119
. This reverts commitb1d48774a7
. This reverts commit94f9a20ce6
. This reverts commit4831e48708
. This reverts commitcd985de190
. This reverts commit9521d21681
. This reverts commitd6136151e9
.
289 lines
8.2 KiB
C
289 lines
8.2 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Wez Furlong <wez@thebrainroom.com> |
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| Scott MacVicar <scottmac@php.net> |
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| Nuno Lopes <nlopess@php.net> |
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| Marcus Boerger <helly@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "zend.h"
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#include "zend_compile.h"
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#include "zend_stream.h"
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ZEND_DLIMPORT int isatty(int fd);
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static ssize_t zend_stream_stdio_reader(void *handle, char *buf, size_t len) /* {{{ */
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{
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return fread(buf, 1, len, (FILE*)handle);
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} /* }}} */
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static void zend_stream_stdio_closer(void *handle) /* {{{ */
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{
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if (handle && (FILE*)handle != stdin) {
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fclose((FILE*)handle);
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}
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} /* }}} */
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static size_t zend_stream_stdio_fsizer(void *handle) /* {{{ */
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{
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zend_stat_t buf = {0};
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if (handle && zend_fstat(fileno((FILE*)handle), &buf) == 0) {
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#ifdef S_ISREG
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if (!S_ISREG(buf.st_mode)) {
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return 0;
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}
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#endif
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return buf.st_size;
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}
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return -1;
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} /* }}} */
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static size_t zend_stream_fsize(zend_file_handle *file_handle) /* {{{ */
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{
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ZEND_ASSERT(file_handle->type == ZEND_HANDLE_STREAM);
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if (file_handle->handle.stream.isatty) {
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return 0;
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}
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return file_handle->handle.stream.fsizer(file_handle->handle.stream.handle);
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} /* }}} */
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ZEND_API void zend_stream_init_fp(zend_file_handle *handle, FILE *fp, const char *filename) {
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memset(handle, 0, sizeof(zend_file_handle));
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handle->type = ZEND_HANDLE_FP;
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handle->handle.fp = fp;
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handle->filename = filename ? zend_string_init(filename, strlen(filename), 0) : NULL;
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}
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ZEND_API void zend_stream_init_filename(zend_file_handle *handle, const char *filename) {
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memset(handle, 0, sizeof(zend_file_handle));
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handle->type = ZEND_HANDLE_FILENAME;
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handle->filename = filename ? zend_string_init(filename, strlen(filename), 0) : NULL;
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}
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ZEND_API void zend_stream_init_filename_ex(zend_file_handle *handle, zend_string *filename) {
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memset(handle, 0, sizeof(zend_file_handle));
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handle->type = ZEND_HANDLE_FILENAME;
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handle->filename = zend_string_copy(filename);
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}
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ZEND_API zend_result zend_stream_open(zend_file_handle *handle) /* {{{ */
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{
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zend_string *opened_path;
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ZEND_ASSERT(handle->type == ZEND_HANDLE_FILENAME);
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if (zend_stream_open_function) {
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return zend_stream_open_function(handle);
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}
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handle->handle.fp = zend_fopen(handle->filename, &opened_path);
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if (!handle->handle.fp) {
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return FAILURE;
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}
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handle->type = ZEND_HANDLE_FP;
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return SUCCESS;
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} /* }}} */
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static int zend_stream_getc(zend_file_handle *file_handle) /* {{{ */
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{
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char buf;
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if (file_handle->handle.stream.reader(file_handle->handle.stream.handle, &buf, sizeof(buf))) {
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return (int)buf;
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}
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return EOF;
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} /* }}} */
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static ssize_t zend_stream_read(zend_file_handle *file_handle, char *buf, size_t len) /* {{{ */
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{
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if (file_handle->handle.stream.isatty) {
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int c = '*';
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size_t n;
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for (n = 0; n < len && (c = zend_stream_getc(file_handle)) != EOF && c != '\n'; ++n) {
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buf[n] = (char)c;
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}
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if (c == '\n') {
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buf[n++] = (char)c;
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}
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return n;
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}
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return file_handle->handle.stream.reader(file_handle->handle.stream.handle, buf, len);
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} /* }}} */
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ZEND_API zend_result zend_stream_fixup(zend_file_handle *file_handle, char **buf, size_t *len) /* {{{ */
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{
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size_t file_size;
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if (file_handle->buf) {
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*buf = file_handle->buf;
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*len = file_handle->len;
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return SUCCESS;
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}
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if (file_handle->type == ZEND_HANDLE_FILENAME) {
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if (zend_stream_open(file_handle) == FAILURE) {
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return FAILURE;
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}
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}
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if (file_handle->type == ZEND_HANDLE_FP) {
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if (!file_handle->handle.fp) {
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return FAILURE;
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}
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file_handle->type = ZEND_HANDLE_STREAM;
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file_handle->handle.stream.handle = file_handle->handle.fp;
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file_handle->handle.stream.isatty = isatty(fileno((FILE *)file_handle->handle.stream.handle));
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file_handle->handle.stream.reader = (zend_stream_reader_t)zend_stream_stdio_reader;
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file_handle->handle.stream.closer = (zend_stream_closer_t)zend_stream_stdio_closer;
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file_handle->handle.stream.fsizer = (zend_stream_fsizer_t)zend_stream_stdio_fsizer;
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}
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file_size = zend_stream_fsize(file_handle);
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if (file_size == (size_t)-1) {
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return FAILURE;
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}
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if (file_size) {
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ssize_t read;
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size_t size = 0;
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*buf = safe_emalloc(1, file_size, ZEND_MMAP_AHEAD);
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while ((read = zend_stream_read(file_handle, *buf + size, file_size - size)) > 0) {
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size += read;
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}
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if (read < 0) {
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efree(*buf);
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return FAILURE;
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}
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file_handle->buf = *buf;
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file_handle->len = size;
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} else {
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size_t size = 0, remain = 4*1024;
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ssize_t read;
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*buf = emalloc(remain);
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while ((read = zend_stream_read(file_handle, *buf + size, remain)) > 0) {
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size += read;
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remain -= read;
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if (remain == 0) {
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*buf = safe_erealloc(*buf, size, 2, 0);
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remain = size;
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}
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}
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if (read < 0) {
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efree(*buf);
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return FAILURE;
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}
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file_handle->len = size;
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if (size && remain < ZEND_MMAP_AHEAD) {
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*buf = safe_erealloc(*buf, size, 1, ZEND_MMAP_AHEAD);
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}
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file_handle->buf = *buf;
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}
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if (file_handle->len == 0) {
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*buf = erealloc(*buf, ZEND_MMAP_AHEAD);
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file_handle->buf = *buf;
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}
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memset(file_handle->buf + file_handle->len, 0, ZEND_MMAP_AHEAD);
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*buf = file_handle->buf;
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*len = file_handle->len;
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return SUCCESS;
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} /* }}} */
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static void zend_file_handle_dtor(zend_file_handle *fh) /* {{{ */
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{
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switch (fh->type) {
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case ZEND_HANDLE_FP:
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if (fh->handle.fp) {
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fclose(fh->handle.fp);
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fh->handle.fp = NULL;
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}
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break;
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case ZEND_HANDLE_STREAM:
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if (fh->handle.stream.closer && fh->handle.stream.handle) {
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fh->handle.stream.closer(fh->handle.stream.handle);
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}
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fh->handle.stream.handle = NULL;
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break;
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case ZEND_HANDLE_FILENAME:
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/* We're only supposed to get here when destructing the used_files hash,
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* which doesn't really contain open files, but references to their names/paths
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*/
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break;
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}
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if (fh->opened_path) {
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zend_string_release_ex(fh->opened_path, 0);
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fh->opened_path = NULL;
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}
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if (fh->buf) {
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efree(fh->buf);
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fh->buf = NULL;
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}
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if (fh->filename) {
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zend_string_release(fh->filename);
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fh->filename = NULL;
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}
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}
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/* }}} */
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/* return int to be compatible with Zend linked list API */
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static int zend_compare_file_handles(zend_file_handle *fh1, zend_file_handle *fh2) /* {{{ */
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{
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if (fh1->type != fh2->type) {
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return 0;
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}
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switch (fh1->type) {
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case ZEND_HANDLE_FILENAME:
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return zend_string_equals(fh1->filename, fh2->filename);
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case ZEND_HANDLE_FP:
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return fh1->handle.fp == fh2->handle.fp;
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case ZEND_HANDLE_STREAM:
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return fh1->handle.stream.handle == fh2->handle.stream.handle;
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default:
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return 0;
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}
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return 0;
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} /* }}} */
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ZEND_API void zend_destroy_file_handle(zend_file_handle *file_handle) /* {{{ */
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{
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if (file_handle->in_list) {
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zend_llist_del_element(&CG(open_files), file_handle, (int (*)(void *, void *)) zend_compare_file_handles);
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/* zend_file_handle_dtor() operates on the copy, so we have to NULLify the original here */
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file_handle->opened_path = NULL;
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file_handle->filename = NULL;
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} else {
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zend_file_handle_dtor(file_handle);
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}
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} /* }}} */
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void zend_stream_init(void) /* {{{ */
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{
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zend_llist_init(&CG(open_files), sizeof(zend_file_handle), (void (*)(void *)) zend_file_handle_dtor, 0);
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} /* }}} */
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void zend_stream_shutdown(void) /* {{{ */
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{
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zend_llist_destroy(&CG(open_files));
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} /* }}} */
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