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|
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| 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: |
| 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: Stanislav Malyshev <stas@php.net> |
+----------------------------------------------------------------------+
*/
#include "php_gd.h"
#define CTX_PUTC(c,ctx) ctx->putC(ctx, c)
static void _php_image_output_putc(struct gdIOCtx *ctx, int c) /* {{{ */
{
/* without the following downcast, the write will fail
* (i.e., will write a zero byte) for all
* big endian architectures:
*/
unsigned char ch = (unsigned char) c;
php_write(&ch, 1);
} /* }}} */
static int _php_image_output_putbuf(struct gdIOCtx *ctx, const void* buf, int l) /* {{{ */
{
return php_write((void *)buf, l);
} /* }}} */
static void _php_image_output_ctxfree(struct gdIOCtx *ctx) /* {{{ */
{
if(ctx) {
efree(ctx);
}
} /* }}} */
static void _php_image_stream_putc(struct gdIOCtx *ctx, int c) /* {{{ */ {
char ch = (char) c;
php_stream * stream = (php_stream *)ctx->data;
php_stream_write(stream, &ch, 1);
} /* }}} */
static int _php_image_stream_putbuf(struct gdIOCtx *ctx, const void* buf, int l) /* {{{ */
{
php_stream * stream = (php_stream *)ctx->data;
return php_stream_write(stream, (void *)buf, l);
} /* }}} */
static void _php_image_stream_ctxfree(struct gdIOCtx *ctx) /* {{{ */
{
if(ctx->data) {
ctx->data = NULL;
}
if(ctx) {
efree(ctx);
}
} /* }}} */
static void _php_image_stream_ctxfreeandclose(struct gdIOCtx *ctx) /* {{{ */
{
if(ctx->data) {
php_stream_close((php_stream *) ctx->data);
ctx->data = NULL;
}
if(ctx) {
efree(ctx);
}
} /* }}} */
/* {{{ _php_image_output_ctx */
static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type, char *tn, void (*func_p)())
{
zval *imgind;
char *file = NULL;
size_t file_len = 0;
zend_long quality, basefilter;
zend_bool compressed = 1;
gdImagePtr im;
int argc = ZEND_NUM_ARGS();
int q = -1, i;
int f = -1;
gdIOCtx *ctx = NULL;
zval *to_zval = NULL;
php_stream *stream;
int close_stream = 1;
/* The third (quality) parameter for Wbmp and Xbm stands for the foreground color index when called
* from image<type>().
*/
switch (image_type) {
case PHP_GDIMG_TYPE_XBM:
if (zend_parse_parameters(argc, "rp!|ll", &imgind, &file, &file_len, &quality, &basefilter) == FAILURE) {
return;
}
break;
case PHP_GDIMG_TYPE_BMP:
if (zend_parse_parameters(argc, "r|z!b", &imgind, &to_zval, &compressed) == FAILURE) {
return;
}
break;
default:
/* PHP_GDIMG_TYPE_GIF
* PHP_GDIMG_TYPE_PNG
* PHP_GDIMG_TYPE_JPG
* PHP_GDIMG_TYPE_WBM
* PHP_GDIMG_TYPE_WEBP
* */
if (zend_parse_parameters(argc, "r|z!ll", &imgind, &to_zval, &quality, &basefilter) == FAILURE) {
return;
}
}
if ((im = (gdImagePtr)zend_fetch_resource(Z_RES_P(imgind), "Image", phpi_get_le_gd())) == NULL) {
RETURN_FALSE;
}
if (image_type != PHP_GDIMG_TYPE_BMP && argc >= 3) {
q = quality; /* or colorindex for foreground of BW images (defaults to black) */
if (argc == 4) {
f = basefilter;
}
}
if (argc > 1 && to_zval != NULL) {
if (Z_TYPE_P(to_zval) == IS_RESOURCE) {
php_stream_from_zval_no_verify(stream, to_zval);
if (stream == NULL) {
RETURN_FALSE;
}
close_stream = 0;
} else if (Z_TYPE_P(to_zval) == IS_STRING) {
if (CHECK_ZVAL_NULL_PATH(to_zval)) {
php_error_docref(NULL, E_WARNING, "Invalid 2nd parameter, filename must not contain null bytes");
RETURN_FALSE;
}
stream = php_stream_open_wrapper(Z_STRVAL_P(to_zval), "wb", REPORT_ERRORS|IGNORE_PATH|IGNORE_URL_WIN, NULL);
if (stream == NULL) {
RETURN_FALSE;
}
} else {
php_error_docref(NULL, E_WARNING, "Invalid 2nd parameter, it must a filename or a stream");
RETURN_FALSE;
}
} else if (argc > 1 && file != NULL) {
stream = php_stream_open_wrapper(file, "wb", REPORT_ERRORS|IGNORE_PATH|IGNORE_URL_WIN, NULL);
if (stream == NULL) {
RETURN_FALSE;
}
} else {
ctx = ecalloc(1, sizeof(gdIOCtx));
ctx->putC = _php_image_output_putc;
ctx->putBuf = _php_image_output_putbuf;
ctx->gd_free = _php_image_output_ctxfree;
}
if (!ctx) {
ctx = ecalloc(1, sizeof(gdIOCtx));
ctx->putC = _php_image_stream_putc;
ctx->putBuf = _php_image_stream_putbuf;
if (close_stream) {
ctx->gd_free = _php_image_stream_ctxfreeandclose;
} else {
ctx->gd_free = _php_image_stream_ctxfree;
}
ctx->data = (void *)stream;
}
switch(image_type) {
case PHP_GDIMG_TYPE_JPG:
(*func_p)(im, ctx, q);
break;
case PHP_GDIMG_TYPE_WEBP:
if (q == -1) {
q = 80;
}
(*func_p)(im, ctx, q);
break;
case PHP_GDIMG_TYPE_PNG:
(*func_p)(im, ctx, q, f);
break;
case PHP_GDIMG_TYPE_XBM:
case PHP_GDIMG_TYPE_WBM:
if (argc < 3) {
for(i=0; i < gdImageColorsTotal(im); i++) {
if(!gdImageRed(im, i) && !gdImageGreen(im, i) && !gdImageBlue(im, i)) break;
}
q = i;
}
if (image_type == PHP_GDIMG_TYPE_XBM) {
(*func_p)(im, file ? file : "", q, ctx);
} else {
(*func_p)(im, q, ctx);
}
break;
case PHP_GDIMG_TYPE_BMP:
(*func_p)(im, ctx, (int) compressed);
break;
default:
(*func_p)(im, ctx);
break;
}
ctx->gd_free(ctx);
RETURN_TRUE;
}
/* }}} */
|
