1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2014 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Stanislav Malyshev <stas@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20
21 #include "php_gd.h"
22
23 #define CTX_PUTC(c,ctx) ctx->putC(ctx, c)
24
_php_image_output_putc(struct gdIOCtx * ctx,int c)25 static void _php_image_output_putc(struct gdIOCtx *ctx, int c)
26 {
27 /* without the following downcast, the write will fail
28 * (i.e., will write a zero byte) for all
29 * big endian architectures:
30 */
31 unsigned char ch = (unsigned char) c;
32 TSRMLS_FETCH();
33 php_write(&ch, 1 TSRMLS_CC);
34 }
35
_php_image_output_putbuf(struct gdIOCtx * ctx,const void * buf,int l)36 static int _php_image_output_putbuf(struct gdIOCtx *ctx, const void* buf, int l)
37 {
38 TSRMLS_FETCH();
39 return php_write((void *)buf, l TSRMLS_CC);
40 }
41
_php_image_output_ctxfree(struct gdIOCtx * ctx)42 static void _php_image_output_ctxfree(struct gdIOCtx *ctx)
43 {
44 if(ctx) {
45 efree(ctx);
46 }
47 }
48
_php_image_stream_putc(struct gdIOCtx * ctx,int c)49 static void _php_image_stream_putc(struct gdIOCtx *ctx, int c) {
50 char ch = (char) c;
51 php_stream * stream = (php_stream *)ctx->data;
52 TSRMLS_FETCH();
53 php_stream_write(stream, &ch, 1);
54 }
55
_php_image_stream_putbuf(struct gdIOCtx * ctx,const void * buf,int l)56 static int _php_image_stream_putbuf(struct gdIOCtx *ctx, const void* buf, int l)
57 {
58 php_stream * stream = (php_stream *)ctx->data;
59 TSRMLS_FETCH();
60 return php_stream_write(stream, (void *)buf, l);
61 }
62
_php_image_stream_ctxfree(struct gdIOCtx * ctx)63 static void _php_image_stream_ctxfree(struct gdIOCtx *ctx)
64 {
65 TSRMLS_FETCH();
66
67 if(ctx->data) {
68 php_stream_close((php_stream *) ctx->data);
69 ctx->data = NULL;
70 }
71 if(ctx) {
72 efree(ctx);
73 }
74 }
75
76 /* {{{ _php_image_output_ctx */
_php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS,int image_type,char * tn,void (* func_p)())77 static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type, char *tn, void (*func_p)())
78 {
79 zval *imgind;
80 char *file = NULL;
81 int file_len = 0;
82 long quality, basefilter;
83 gdImagePtr im;
84 int argc = ZEND_NUM_ARGS();
85 int q = -1, i;
86 int f = -1;
87 gdIOCtx *ctx = NULL;
88 zval *to_zval = NULL;
89 php_stream *stream;
90
91 /* The third (quality) parameter for Wbmp stands for the threshold when called from image2wbmp().
92 * The third (quality) parameter for Wbmp and Xbm stands for the foreground color index when called
93 * from imagey<type>().
94 */
95 if (image_type == PHP_GDIMG_TYPE_XBM) {
96 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rp!|ll", &imgind, &file, &file_len, &quality, &basefilter) == FAILURE) {
97 return;
98 }
99 } else {
100 /* PHP_GDIMG_TYPE_GIF
101 * PHP_GDIMG_TYPE_PNG
102 * PHP_GDIMG_TYPE_JPG
103 * PHP_GDIMG_TYPE_WBM
104 * PHP_GDIMG_TYPE_WEBP
105 * */
106 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|z/!ll", &imgind, &to_zval, &quality, &basefilter) == FAILURE) {
107 return;
108 }
109 }
110
111 ZEND_FETCH_RESOURCE(im, gdImagePtr, &imgind, -1, "Image", phpi_get_le_gd());
112
113 if (argc >= 3) {
114 q = quality; /* or colorindex for foreground of BW images (defaults to black) */
115 if (argc == 4) {
116 f = basefilter;
117 }
118 }
119
120 if (argc > 1 && to_zval != NULL) {
121 if (Z_TYPE_P(to_zval) == IS_RESOURCE) {
122 php_stream_from_zval_no_verify(stream, &to_zval);
123 if (stream == NULL) {
124 RETURN_FALSE;
125 }
126 } else if (Z_TYPE_P(to_zval) == IS_STRING) {
127 if (CHECK_ZVAL_NULL_PATH(to_zval)) {
128 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid 2nd parameter, filename must not contain null bytes");
129 RETURN_FALSE;
130 }
131
132 stream = php_stream_open_wrapper(Z_STRVAL_P(to_zval), "wb", REPORT_ERRORS|IGNORE_PATH|IGNORE_URL_WIN, NULL);
133 if (stream == NULL) {
134 RETURN_FALSE;
135 }
136 } else {
137 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid 2nd parameter, it must a filename or a stream");
138 RETURN_FALSE;
139 }
140 } else {
141 ctx = emalloc(sizeof(gdIOCtx));
142 ctx->putC = _php_image_output_putc;
143 ctx->putBuf = _php_image_output_putbuf;
144 ctx->gd_free = _php_image_output_ctxfree;
145
146 #if APACHE && defined(CHARSET_EBCDIC)
147 /* XXX this is unlikely to work any more thies@thieso.net */
148 /* This is a binary file already: avoid EBCDIC->ASCII conversion */
149 ap_bsetflag(php3_rqst->connection->client, B_EBCDIC2ASCII, 0);
150 #endif
151 }
152
153 if (!ctx) {
154 ctx = emalloc(sizeof(gdIOCtx));
155 ctx->putC = _php_image_stream_putc;
156 ctx->putBuf = _php_image_stream_putbuf;
157 ctx->gd_free = _php_image_stream_ctxfree;
158 ctx->data = (void *)stream;
159 }
160
161 switch(image_type) {
162 case PHP_GDIMG_CONVERT_WBM:
163 if(q<0||q>255) {
164 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid threshold value '%d'. It must be between 0 and 255", q);
165 }
166 case PHP_GDIMG_TYPE_JPG:
167 (*func_p)(im, ctx, q);
168 break;
169 case PHP_GDIMG_TYPE_WEBP:
170 if (q == -1) {
171 q = 80;
172 }
173 (*func_p)(im, ctx, q);
174 break;
175 case PHP_GDIMG_TYPE_PNG:
176 (*func_p)(im, ctx, q, f);
177 break;
178 case PHP_GDIMG_TYPE_XBM:
179 case PHP_GDIMG_TYPE_WBM:
180 if (argc < 3) {
181 for(i=0; i < gdImageColorsTotal(im); i++) {
182 if(!gdImageRed(im, i) && !gdImageGreen(im, i) && !gdImageBlue(im, i)) break;
183 }
184 q = i;
185 }
186 if (image_type == PHP_GDIMG_TYPE_XBM) {
187 (*func_p)(im, file, q, ctx);
188 } else {
189 (*func_p)(im, q, ctx);
190 }
191 break;
192 default:
193 (*func_p)(im, ctx);
194 break;
195 }
196
197 #if HAVE_LIBGD204
198 ctx->gd_free(ctx);
199 #else
200 ctx->free(ctx);
201 #endif
202
203 RETURN_TRUE;
204 }
205 /* }}} */
206
207 /*
208 * Local variables:
209 * tab-width: 4
210 * c-basic-offset: 4
211 * End:
212 * vim600: sw=4 ts=4 fdm=marker
213 * vim<600: sw=4 ts=4
214 */
215
