Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_image_filter_module.c @ 6083:516d8e299273 stable-1.6
Core: overflow detection in number parsing functions.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Tue, 17 Mar 2015 00:26:15 +0300 |
parents | 2cfc095a607a |
children | 8cdec62a7751 |
rev | line source |
---|---|
2788 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
2788 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
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11 |
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12 #include <gd.h> |
2788 | 13 |
14 | |
15 #define NGX_HTTP_IMAGE_OFF 0 | |
16 #define NGX_HTTP_IMAGE_TEST 1 | |
17 #define NGX_HTTP_IMAGE_SIZE 2 | |
18 #define NGX_HTTP_IMAGE_RESIZE 3 | |
19 #define NGX_HTTP_IMAGE_CROP 4 | |
3878 | 20 #define NGX_HTTP_IMAGE_ROTATE 5 |
2788 | 21 |
22 | |
23 #define NGX_HTTP_IMAGE_START 0 | |
24 #define NGX_HTTP_IMAGE_READ 1 | |
25 #define NGX_HTTP_IMAGE_PROCESS 2 | |
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26 #define NGX_HTTP_IMAGE_PASS 3 |
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27 #define NGX_HTTP_IMAGE_DONE 4 |
2788 | 28 |
29 | |
30 #define NGX_HTTP_IMAGE_NONE 0 | |
31 #define NGX_HTTP_IMAGE_JPEG 1 | |
32 #define NGX_HTTP_IMAGE_GIF 2 | |
33 #define NGX_HTTP_IMAGE_PNG 3 | |
34 | |
35 | |
36 #define NGX_HTTP_IMAGE_BUFFERED 0x08 | |
37 | |
38 | |
39 typedef struct { | |
40 ngx_uint_t filter; | |
41 ngx_uint_t width; | |
42 ngx_uint_t height; | |
3878 | 43 ngx_uint_t angle; |
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44 ngx_uint_t jpeg_quality; |
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45 ngx_uint_t sharpen; |
2788 | 46 |
3134 | 47 ngx_flag_t transparency; |
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48 ngx_flag_t interlace; |
3134 | 49 |
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50 ngx_http_complex_value_t *wcv; |
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51 ngx_http_complex_value_t *hcv; |
3878 | 52 ngx_http_complex_value_t *acv; |
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53 ngx_http_complex_value_t *jqcv; |
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54 ngx_http_complex_value_t *shcv; |
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55 |
2788 | 56 size_t buffer_size; |
57 } ngx_http_image_filter_conf_t; | |
58 | |
59 | |
60 typedef struct { | |
61 u_char *image; | |
62 u_char *last; | |
63 | |
64 size_t length; | |
65 | |
66 ngx_uint_t width; | |
67 ngx_uint_t height; | |
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68 ngx_uint_t max_width; |
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69 ngx_uint_t max_height; |
3878 | 70 ngx_uint_t angle; |
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71 |
2788 | 72 ngx_uint_t phase; |
73 ngx_uint_t type; | |
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74 ngx_uint_t force; |
2788 | 75 } ngx_http_image_filter_ctx_t; |
76 | |
77 | |
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78 static ngx_int_t ngx_http_image_send(ngx_http_request_t *r, |
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79 ngx_http_image_filter_ctx_t *ctx, ngx_chain_t *in); |
2788 | 80 static ngx_uint_t ngx_http_image_test(ngx_http_request_t *r, ngx_chain_t *in); |
81 static ngx_int_t ngx_http_image_read(ngx_http_request_t *r, ngx_chain_t *in); | |
82 static ngx_buf_t *ngx_http_image_process(ngx_http_request_t *r); | |
83 static ngx_buf_t *ngx_http_image_json(ngx_http_request_t *r, | |
84 ngx_http_image_filter_ctx_t *ctx); | |
85 static ngx_buf_t *ngx_http_image_asis(ngx_http_request_t *r, | |
86 ngx_http_image_filter_ctx_t *ctx); | |
87 static void ngx_http_image_length(ngx_http_request_t *r, ngx_buf_t *b); | |
88 static ngx_int_t ngx_http_image_size(ngx_http_request_t *r, | |
89 ngx_http_image_filter_ctx_t *ctx); | |
90 | |
91 static ngx_buf_t *ngx_http_image_resize(ngx_http_request_t *r, | |
92 ngx_http_image_filter_ctx_t *ctx); | |
93 static gdImagePtr ngx_http_image_source(ngx_http_request_t *r, | |
94 ngx_http_image_filter_ctx_t *ctx); | |
95 static gdImagePtr ngx_http_image_new(ngx_http_request_t *r, int w, int h, | |
96 int colors); | |
97 static u_char *ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, | |
98 gdImagePtr img, int *size); | |
99 static void ngx_http_image_cleanup(void *data); | |
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100 static ngx_uint_t ngx_http_image_filter_get_value(ngx_http_request_t *r, |
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101 ngx_http_complex_value_t *cv, ngx_uint_t v); |
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102 static ngx_uint_t ngx_http_image_filter_value(ngx_str_t *value); |
2788 | 103 |
104 | |
105 static void *ngx_http_image_filter_create_conf(ngx_conf_t *cf); | |
106 static char *ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
107 void *child); | |
108 static char *ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, | |
109 void *conf); | |
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110 static char *ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf, |
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111 ngx_command_t *cmd, void *conf); |
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112 static char *ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd, |
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113 void *conf); |
2788 | 114 static ngx_int_t ngx_http_image_filter_init(ngx_conf_t *cf); |
115 | |
116 | |
117 static ngx_command_t ngx_http_image_filter_commands[] = { | |
118 | |
119 { ngx_string("image_filter"), | |
4307 | 120 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123, |
2788 | 121 ngx_http_image_filter, |
122 NGX_HTTP_LOC_CONF_OFFSET, | |
123 0, | |
124 NULL }, | |
125 | |
2848 | 126 { ngx_string("image_filter_jpeg_quality"), |
127 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
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128 ngx_http_image_filter_jpeg_quality, |
2848 | 129 NGX_HTTP_LOC_CONF_OFFSET, |
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130 0, |
2848 | 131 NULL }, |
132 | |
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133 { ngx_string("image_filter_sharpen"), |
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134 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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135 ngx_http_image_filter_sharpen, |
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136 NGX_HTTP_LOC_CONF_OFFSET, |
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137 0, |
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138 NULL }, |
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139 |
3134 | 140 { ngx_string("image_filter_transparency"), |
141 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
142 ngx_conf_set_flag_slot, | |
143 NGX_HTTP_LOC_CONF_OFFSET, | |
144 offsetof(ngx_http_image_filter_conf_t, transparency), | |
145 NULL }, | |
146 | |
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147 { ngx_string("image_filter_interlace"), |
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148 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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149 ngx_conf_set_flag_slot, |
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150 NGX_HTTP_LOC_CONF_OFFSET, |
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151 offsetof(ngx_http_image_filter_conf_t, interlace), |
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152 NULL }, |
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153 |
2788 | 154 { ngx_string("image_filter_buffer"), |
155 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
156 ngx_conf_set_size_slot, | |
157 NGX_HTTP_LOC_CONF_OFFSET, | |
158 offsetof(ngx_http_image_filter_conf_t, buffer_size), | |
159 NULL }, | |
160 | |
161 ngx_null_command | |
162 }; | |
163 | |
164 | |
165 static ngx_http_module_t ngx_http_image_filter_module_ctx = { | |
166 NULL, /* preconfiguration */ | |
167 ngx_http_image_filter_init, /* postconfiguration */ | |
168 | |
169 NULL, /* create main configuration */ | |
170 NULL, /* init main configuration */ | |
171 | |
172 NULL, /* create server configuration */ | |
173 NULL, /* merge server configuration */ | |
174 | |
175 ngx_http_image_filter_create_conf, /* create location configuration */ | |
176 ngx_http_image_filter_merge_conf /* merge location configuration */ | |
177 }; | |
178 | |
179 | |
180 ngx_module_t ngx_http_image_filter_module = { | |
181 NGX_MODULE_V1, | |
182 &ngx_http_image_filter_module_ctx, /* module context */ | |
183 ngx_http_image_filter_commands, /* module directives */ | |
184 NGX_HTTP_MODULE, /* module type */ | |
185 NULL, /* init master */ | |
186 NULL, /* init module */ | |
187 NULL, /* init process */ | |
188 NULL, /* init thread */ | |
189 NULL, /* exit thread */ | |
190 NULL, /* exit process */ | |
191 NULL, /* exit master */ | |
192 NGX_MODULE_V1_PADDING | |
193 }; | |
194 | |
195 | |
196 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
197 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
198 | |
199 | |
200 static ngx_str_t ngx_http_image_types[] = { | |
201 ngx_string("image/jpeg"), | |
202 ngx_string("image/gif"), | |
203 ngx_string("image/png") | |
204 }; | |
205 | |
206 | |
207 static ngx_int_t | |
208 ngx_http_image_header_filter(ngx_http_request_t *r) | |
209 { | |
210 off_t len; | |
211 ngx_http_image_filter_ctx_t *ctx; | |
212 ngx_http_image_filter_conf_t *conf; | |
213 | |
214 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
215 return ngx_http_next_header_filter(r); | |
216 } | |
217 | |
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218 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); |
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219 |
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220 if (ctx) { |
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221 ngx_http_set_ctx(r, NULL, ngx_http_image_filter_module); |
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222 return ngx_http_next_header_filter(r); |
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223 } |
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224 |
2788 | 225 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); |
226 | |
227 if (conf->filter == NGX_HTTP_IMAGE_OFF) { | |
228 return ngx_http_next_header_filter(r); | |
229 } | |
230 | |
231 if (r->headers_out.content_type.len | |
232 >= sizeof("multipart/x-mixed-replace") - 1 | |
233 && ngx_strncasecmp(r->headers_out.content_type.data, | |
234 (u_char *) "multipart/x-mixed-replace", | |
235 sizeof("multipart/x-mixed-replace") - 1) | |
236 == 0) | |
237 { | |
238 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
239 "image filter: multipart/x-mixed-replace response"); | |
240 | |
241 return NGX_ERROR; | |
242 } | |
243 | |
244 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_image_filter_ctx_t)); | |
245 if (ctx == NULL) { | |
246 return NGX_ERROR; | |
247 } | |
248 | |
249 ngx_http_set_ctx(r, ctx, ngx_http_image_filter_module); | |
250 | |
251 len = r->headers_out.content_length_n; | |
252 | |
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253 if (len != -1 && len > (off_t) conf->buffer_size) { |
2788 | 254 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
255 "image filter: too big response: %O", len); | |
256 | |
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257 return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE; |
2788 | 258 } |
259 | |
260 if (len == -1) { | |
261 ctx->length = conf->buffer_size; | |
262 | |
263 } else { | |
264 ctx->length = (size_t) len; | |
265 } | |
266 | |
267 if (r->headers_out.refresh) { | |
268 r->headers_out.refresh->hash = 0; | |
269 } | |
270 | |
271 r->main_filter_need_in_memory = 1; | |
272 r->allow_ranges = 0; | |
273 | |
274 return NGX_OK; | |
275 } | |
276 | |
277 | |
278 static ngx_int_t | |
279 ngx_http_image_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
280 { | |
281 ngx_int_t rc; | |
282 ngx_str_t *ct; | |
283 ngx_chain_t out; | |
284 ngx_http_image_filter_ctx_t *ctx; | |
285 ngx_http_image_filter_conf_t *conf; | |
286 | |
287 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "image filter"); | |
288 | |
289 if (in == NULL) { | |
290 return ngx_http_next_body_filter(r, in); | |
291 } | |
292 | |
293 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
294 | |
295 if (ctx == NULL) { | |
296 return ngx_http_next_body_filter(r, in); | |
297 } | |
298 | |
299 switch (ctx->phase) { | |
300 | |
301 case NGX_HTTP_IMAGE_START: | |
302 | |
303 ctx->type = ngx_http_image_test(r, in); | |
304 | |
305 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
306 | |
307 if (ctx->type == NGX_HTTP_IMAGE_NONE) { | |
308 | |
309 if (conf->filter == NGX_HTTP_IMAGE_SIZE) { | |
310 out.buf = ngx_http_image_json(r, NULL); | |
311 | |
312 if (out.buf) { | |
313 out.next = NULL; | |
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314 ctx->phase = NGX_HTTP_IMAGE_DONE; |
2788 | 315 |
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316 return ngx_http_image_send(r, ctx, &out); |
2788 | 317 } |
318 } | |
319 | |
320 return ngx_http_filter_finalize_request(r, | |
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321 &ngx_http_image_filter_module, |
2788 | 322 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
323 } | |
324 | |
325 /* override content type */ | |
326 | |
327 ct = &ngx_http_image_types[ctx->type - 1]; | |
328 r->headers_out.content_type_len = ct->len; | |
329 r->headers_out.content_type = *ct; | |
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330 r->headers_out.content_type_lowcase = NULL; |
2788 | 331 |
332 if (conf->filter == NGX_HTTP_IMAGE_TEST) { | |
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333 ctx->phase = NGX_HTTP_IMAGE_PASS; |
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334 |
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335 return ngx_http_image_send(r, ctx, in); |
2788 | 336 } |
337 | |
338 ctx->phase = NGX_HTTP_IMAGE_READ; | |
339 | |
340 /* fall through */ | |
341 | |
342 case NGX_HTTP_IMAGE_READ: | |
343 | |
344 rc = ngx_http_image_read(r, in); | |
345 | |
346 if (rc == NGX_AGAIN) { | |
347 return NGX_OK; | |
348 } | |
349 | |
350 if (rc == NGX_ERROR) { | |
351 return ngx_http_filter_finalize_request(r, | |
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352 &ngx_http_image_filter_module, |
2788 | 353 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
354 } | |
355 | |
356 /* fall through */ | |
357 | |
358 case NGX_HTTP_IMAGE_PROCESS: | |
359 | |
360 out.buf = ngx_http_image_process(r); | |
361 | |
362 if (out.buf == NULL) { | |
363 return ngx_http_filter_finalize_request(r, | |
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364 &ngx_http_image_filter_module, |
2788 | 365 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
366 } | |
367 | |
368 out.next = NULL; | |
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369 ctx->phase = NGX_HTTP_IMAGE_PASS; |
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370 |
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371 return ngx_http_image_send(r, ctx, &out); |
2788 | 372 |
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373 case NGX_HTTP_IMAGE_PASS: |
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374 |
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375 return ngx_http_next_body_filter(r, in); |
2788 | 376 |
377 default: /* NGX_HTTP_IMAGE_DONE */ | |
378 | |
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379 rc = ngx_http_next_body_filter(r, NULL); |
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380 |
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381 /* NGX_ERROR resets any pending data */ |
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382 return (rc == NGX_OK) ? NGX_ERROR : rc; |
2788 | 383 } |
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384 } |
2788 | 385 |
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386 |
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387 static ngx_int_t |
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388 ngx_http_image_send(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx, |
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389 ngx_chain_t *in) |
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390 { |
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391 ngx_int_t rc; |
2788 | 392 |
393 rc = ngx_http_next_header_filter(r); | |
394 | |
395 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
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396 return NGX_ERROR; |
2788 | 397 } |
398 | |
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399 rc = ngx_http_next_body_filter(r, in); |
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400 |
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401 if (ctx->phase == NGX_HTTP_IMAGE_DONE) { |
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402 /* NGX_ERROR resets any pending data */ |
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403 return (rc == NGX_OK) ? NGX_ERROR : rc; |
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404 } |
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405 |
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406 return rc; |
2788 | 407 } |
408 | |
409 | |
410 static ngx_uint_t | |
411 ngx_http_image_test(ngx_http_request_t *r, ngx_chain_t *in) | |
412 { | |
413 u_char *p; | |
414 | |
415 p = in->buf->pos; | |
416 | |
417 if (in->buf->last - p < 16) { | |
418 return NGX_HTTP_IMAGE_NONE; | |
419 } | |
420 | |
421 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
422 "image filter: \"%c%c\"", p[0], p[1]); | |
423 | |
424 if (p[0] == 0xff && p[1] == 0xd8) { | |
425 | |
426 /* JPEG */ | |
427 | |
428 return NGX_HTTP_IMAGE_JPEG; | |
429 | |
430 } else if (p[0] == 'G' && p[1] == 'I' && p[2] == 'F' && p[3] == '8' | |
2918 | 431 && p[5] == 'a') |
2788 | 432 { |
2918 | 433 if (p[4] == '9' || p[4] == '7') { |
434 /* GIF */ | |
435 return NGX_HTTP_IMAGE_GIF; | |
436 } | |
2788 | 437 |
438 } else if (p[0] == 0x89 && p[1] == 'P' && p[2] == 'N' && p[3] == 'G' | |
439 && p[4] == 0x0d && p[5] == 0x0a && p[6] == 0x1a && p[7] == 0x0a) | |
440 { | |
441 /* PNG */ | |
442 | |
443 return NGX_HTTP_IMAGE_PNG; | |
444 } | |
445 | |
446 return NGX_HTTP_IMAGE_NONE; | |
447 } | |
448 | |
449 | |
450 static ngx_int_t | |
451 ngx_http_image_read(ngx_http_request_t *r, ngx_chain_t *in) | |
452 { | |
453 u_char *p; | |
454 size_t size, rest; | |
455 ngx_buf_t *b; | |
456 ngx_chain_t *cl; | |
457 ngx_http_image_filter_ctx_t *ctx; | |
458 | |
459 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
460 | |
461 if (ctx->image == NULL) { | |
462 ctx->image = ngx_palloc(r->pool, ctx->length); | |
463 if (ctx->image == NULL) { | |
464 return NGX_ERROR; | |
465 } | |
466 | |
467 ctx->last = ctx->image; | |
468 } | |
469 | |
470 p = ctx->last; | |
471 | |
472 for (cl = in; cl; cl = cl->next) { | |
473 | |
474 b = cl->buf; | |
475 size = b->last - b->pos; | |
476 | |
477 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
478 "image buf: %uz", size); | |
479 | |
480 rest = ctx->image + ctx->length - p; | |
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481 |
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482 if (size > rest) { |
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483 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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484 "image filter: too big response"); |
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485 return NGX_ERROR; |
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486 } |
2788 | 487 |
488 p = ngx_cpymem(p, b->pos, size); | |
489 b->pos += size; | |
490 | |
491 if (b->last_buf) { | |
492 ctx->last = p; | |
493 return NGX_OK; | |
494 } | |
495 } | |
496 | |
497 ctx->last = p; | |
498 r->connection->buffered |= NGX_HTTP_IMAGE_BUFFERED; | |
499 | |
500 return NGX_AGAIN; | |
501 } | |
502 | |
503 | |
504 static ngx_buf_t * | |
505 ngx_http_image_process(ngx_http_request_t *r) | |
506 { | |
507 ngx_int_t rc; | |
508 ngx_http_image_filter_ctx_t *ctx; | |
509 ngx_http_image_filter_conf_t *conf; | |
510 | |
511 r->connection->buffered &= ~NGX_HTTP_IMAGE_BUFFERED; | |
512 | |
513 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
514 | |
515 rc = ngx_http_image_size(r, ctx); | |
516 | |
517 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
518 | |
519 if (conf->filter == NGX_HTTP_IMAGE_SIZE) { | |
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520 return ngx_http_image_json(r, rc == NGX_OK ? ctx : NULL); |
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521 } |
2788 | 522 |
3878 | 523 ctx->angle = ngx_http_image_filter_get_value(r, conf->acv, conf->angle); |
524 | |
525 if (conf->filter == NGX_HTTP_IMAGE_ROTATE) { | |
526 | |
527 if (ctx->angle != 90 && ctx->angle != 180 && ctx->angle != 270) { | |
528 return NULL; | |
529 } | |
530 | |
531 return ngx_http_image_resize(r, ctx); | |
532 } | |
533 | |
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534 ctx->max_width = ngx_http_image_filter_get_value(r, conf->wcv, conf->width); |
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535 if (ctx->max_width == 0) { |
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536 return NULL; |
2788 | 537 } |
538 | |
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539 ctx->max_height = ngx_http_image_filter_get_value(r, conf->hcv, |
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540 conf->height); |
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541 if (ctx->max_height == 0) { |
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542 return NULL; |
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543 } |
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544 |
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545 if (rc == NGX_OK |
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546 && ctx->width <= ctx->max_width |
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547 && ctx->height <= ctx->max_height |
3878 | 548 && ctx->angle == 0 |
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549 && !ctx->force) |
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550 { |
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551 return ngx_http_image_asis(r, ctx); |
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552 } |
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553 |
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554 return ngx_http_image_resize(r, ctx); |
2788 | 555 } |
556 | |
557 | |
558 static ngx_buf_t * | |
559 ngx_http_image_json(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
560 { | |
561 size_t len; | |
562 ngx_buf_t *b; | |
563 | |
564 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
565 if (b == NULL) { | |
566 return NULL; | |
567 } | |
568 | |
569 b->memory = 1; | |
570 b->last_buf = 1; | |
571 | |
572 ngx_http_clean_header(r); | |
573 | |
574 r->headers_out.status = NGX_HTTP_OK; | |
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575 r->headers_out.content_type_len = sizeof("application/json") - 1; |
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576 ngx_str_set(&r->headers_out.content_type, "application/json"); |
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577 r->headers_out.content_type_lowcase = NULL; |
2788 | 578 |
579 if (ctx == NULL) { | |
580 b->pos = (u_char *) "{}" CRLF; | |
581 b->last = b->pos + sizeof("{}" CRLF) - 1; | |
582 | |
583 ngx_http_image_length(r, b); | |
584 | |
585 return b; | |
586 } | |
587 | |
588 len = sizeof("{ \"img\" : " | |
589 "{ \"width\": , \"height\": , \"type\": \"jpeg\" } }" CRLF) - 1 | |
590 + 2 * NGX_SIZE_T_LEN; | |
591 | |
592 b->pos = ngx_pnalloc(r->pool, len); | |
593 if (b->pos == NULL) { | |
594 return NULL; | |
595 } | |
596 | |
597 b->last = ngx_sprintf(b->pos, | |
598 "{ \"img\" : " | |
599 "{ \"width\": %uz," | |
600 " \"height\": %uz," | |
601 " \"type\": \"%s\" } }" CRLF, | |
602 ctx->width, ctx->height, | |
603 ngx_http_image_types[ctx->type - 1].data + 6); | |
604 | |
605 ngx_http_image_length(r, b); | |
606 | |
607 return b; | |
608 } | |
609 | |
610 | |
611 static ngx_buf_t * | |
612 ngx_http_image_asis(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
613 { | |
614 ngx_buf_t *b; | |
615 | |
616 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
617 if (b == NULL) { | |
618 return NULL; | |
619 } | |
620 | |
621 b->pos = ctx->image; | |
622 b->last = ctx->last; | |
623 b->memory = 1; | |
624 b->last_buf = 1; | |
625 | |
626 ngx_http_image_length(r, b); | |
627 | |
628 return b; | |
629 } | |
630 | |
631 | |
632 static void | |
633 ngx_http_image_length(ngx_http_request_t *r, ngx_buf_t *b) | |
634 { | |
635 r->headers_out.content_length_n = b->last - b->pos; | |
636 | |
637 if (r->headers_out.content_length) { | |
638 r->headers_out.content_length->hash = 0; | |
639 } | |
640 | |
641 r->headers_out.content_length = NULL; | |
642 } | |
643 | |
644 | |
645 static ngx_int_t | |
646 ngx_http_image_size(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
647 { | |
648 u_char *p, *last; | |
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649 size_t len, app; |
2788 | 650 ngx_uint_t width, height; |
651 | |
652 p = ctx->image; | |
653 | |
654 switch (ctx->type) { | |
655 | |
656 case NGX_HTTP_IMAGE_JPEG: | |
657 | |
658 p += 2; | |
659 last = ctx->image + ctx->length - 10; | |
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660 width = 0; |
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661 height = 0; |
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662 app = 0; |
2788 | 663 |
664 while (p < last) { | |
665 | |
666 if (p[0] == 0xff && p[1] != 0xff) { | |
667 | |
668 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3393 | 669 "JPEG: %02xd %02xd", p[0], p[1]); |
2788 | 670 |
671 p++; | |
672 | |
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673 if ((*p == 0xc0 || *p == 0xc1 || *p == 0xc2 || *p == 0xc3 |
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674 || *p == 0xc9 || *p == 0xca || *p == 0xcb) |
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675 && (width == 0 || height == 0)) |
2788 | 676 { |
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677 width = p[6] * 256 + p[7]; |
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678 height = p[4] * 256 + p[5]; |
2788 | 679 } |
680 | |
681 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
682 "JPEG: %02xd %02xd", p[1], p[2]); | |
683 | |
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684 len = p[1] * 256 + p[2]; |
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685 |
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686 if (*p >= 0xe1 && *p <= 0xef) { |
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687 /* application data, e.g., EXIF, Adobe XMP, etc. */ |
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688 app += len; |
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689 } |
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690 |
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|
691 p += len; |
2788 | 692 |
693 continue; | |
694 } | |
695 | |
696 p++; | |
697 } | |
698 | |
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699 if (width == 0 || height == 0) { |
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700 return NGX_DECLINED; |
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701 } |
2788 | 702 |
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703 if (ctx->length / 20 < app) { |
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704 /* force conversion if application data consume more than 5% */ |
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705 ctx->force = 1; |
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706 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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707 "app data size: %uz", app); |
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708 } |
2788 | 709 |
710 break; | |
711 | |
712 case NGX_HTTP_IMAGE_GIF: | |
713 | |
714 if (ctx->length < 10) { | |
715 return NGX_DECLINED; | |
716 } | |
717 | |
718 width = p[7] * 256 + p[6]; | |
719 height = p[9] * 256 + p[8]; | |
720 | |
721 break; | |
722 | |
723 case NGX_HTTP_IMAGE_PNG: | |
724 | |
725 if (ctx->length < 24) { | |
726 return NGX_DECLINED; | |
727 } | |
728 | |
729 width = p[18] * 256 + p[19]; | |
730 height = p[22] * 256 + p[23]; | |
731 | |
732 break; | |
733 | |
734 default: | |
735 | |
736 return NGX_DECLINED; | |
737 } | |
738 | |
739 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
740 "image size: %d x %d", width, height); | |
741 | |
742 ctx->width = width; | |
743 ctx->height = height; | |
744 | |
745 return NGX_OK; | |
746 } | |
747 | |
748 | |
749 static ngx_buf_t * | |
750 ngx_http_image_resize(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
751 { | |
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changeset
|
752 int sx, sy, dx, dy, ox, oy, ax, ay, size, |
4265
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753 colors, palette, transparent, sharpen, |
3878 | 754 red, green, blue, t; |
2788 | 755 u_char *out; |
756 ngx_buf_t *b; | |
757 ngx_uint_t resize; | |
758 gdImagePtr src, dst; | |
759 ngx_pool_cleanup_t *cln; | |
760 ngx_http_image_filter_conf_t *conf; | |
761 | |
762 src = ngx_http_image_source(r, ctx); | |
763 | |
764 if (src == NULL) { | |
765 return NULL; | |
766 } | |
767 | |
768 sx = gdImageSX(src); | |
769 sy = gdImageSY(src); | |
770 | |
771 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
772 | |
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|
773 if (!ctx->force |
3878 | 774 && ctx->angle == 0 |
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775 && (ngx_uint_t) sx <= ctx->max_width |
2998
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776 && (ngx_uint_t) sy <= ctx->max_height) |
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|
777 { |
2788 | 778 gdImageDestroy(src); |
779 return ngx_http_image_asis(r, ctx); | |
780 } | |
781 | |
782 colors = gdImageColorsTotal(src); | |
3134 | 783 |
784 if (colors && conf->transparency) { | |
785 transparent = gdImageGetTransparent(src); | |
786 | |
787 if (transparent != -1) { | |
788 palette = colors; | |
789 red = gdImageRed(src, transparent); | |
790 green = gdImageGreen(src, transparent); | |
791 blue = gdImageBlue(src, transparent); | |
2788 | 792 |
3134 | 793 goto transparent; |
794 } | |
795 } | |
3117 | 796 |
3134 | 797 palette = 0; |
798 transparent = -1; | |
799 red = 0; | |
800 green = 0; | |
801 blue = 0; | |
802 | |
803 transparent: | |
804 | |
805 gdImageColorTransparent(src, -1); | |
3117 | 806 |
2788 | 807 dx = sx; |
808 dy = sy; | |
809 | |
810 if (conf->filter == NGX_HTTP_IMAGE_RESIZE) { | |
811 | |
2998
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812 if ((ngx_uint_t) dx > ctx->max_width) { |
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parents:
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|
813 dy = dy * ctx->max_width / dx; |
2788 | 814 dy = dy ? dy : 1; |
2998
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diff
changeset
|
815 dx = ctx->max_width; |
2788 | 816 } |
817 | |
2998
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818 if ((ngx_uint_t) dy > ctx->max_height) { |
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819 dx = dx * ctx->max_height / dy; |
2788 | 820 dx = dx ? dx : 1; |
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|
821 dy = ctx->max_height; |
2788 | 822 } |
823 | |
824 resize = 1; | |
825 | |
3878 | 826 } else if (conf->filter == NGX_HTTP_IMAGE_ROTATE) { |
827 | |
828 resize = 0; | |
829 | |
2788 | 830 } else { /* NGX_HTTP_IMAGE_CROP */ |
831 | |
832 resize = 0; | |
833 | |
4601
084137d883ec
Image filter: compare aspect ratio more accurately during crop.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4412
diff
changeset
|
834 if ((double) dx / dy < (double) ctx->max_width / ctx->max_height) { |
2998
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835 if ((ngx_uint_t) dx > ctx->max_width) { |
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parents:
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changeset
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836 dy = dy * ctx->max_width / dx; |
2788 | 837 dy = dy ? dy : 1; |
2998
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|
838 dx = ctx->max_width; |
2788 | 839 resize = 1; |
840 } | |
841 | |
842 } else { | |
2998
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|
843 if ((ngx_uint_t) dy > ctx->max_height) { |
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|
844 dx = dx * ctx->max_height / dy; |
2788 | 845 dx = dx ? dx : 1; |
2998
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|
846 dy = ctx->max_height; |
2788 | 847 resize = 1; |
848 } | |
849 } | |
850 } | |
851 | |
852 if (resize) { | |
3134 | 853 dst = ngx_http_image_new(r, dx, dy, palette); |
2788 | 854 if (dst == NULL) { |
855 gdImageDestroy(src); | |
856 return NULL; | |
857 } | |
858 | |
3133
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|
859 if (colors == 0) { |
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|
860 gdImageSaveAlpha(dst, 1); |
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861 gdImageAlphaBlending(dst, 0); |
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862 } |
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diff
changeset
|
863 |
2788 | 864 gdImageCopyResampled(dst, src, 0, 0, 0, 0, dx, dy, sx, sy); |
865 | |
3134 | 866 if (colors) { |
867 gdImageTrueColorToPalette(dst, 1, 256); | |
868 } | |
869 | |
2788 | 870 gdImageDestroy(src); |
871 | |
872 } else { | |
873 dst = src; | |
874 } | |
875 | |
3878 | 876 if (ctx->angle) { |
877 src = dst; | |
878 | |
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|
879 ax = (dx % 2 == 0) ? 1 : 0; |
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|
880 ay = (dy % 2 == 0) ? 1 : 0; |
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|
881 |
3878 | 882 switch (ctx->angle) { |
883 | |
884 case 90: | |
885 case 270: | |
886 dst = ngx_http_image_new(r, dy, dx, palette); | |
887 if (dst == NULL) { | |
888 gdImageDestroy(src); | |
889 return NULL; | |
890 } | |
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diff
changeset
|
891 if (ctx->angle == 90) { |
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|
892 ox = dy / 2 + ay; |
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|
893 oy = dx / 2 - ax; |
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|
894 |
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|
895 } else { |
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|
896 ox = dy / 2 - ay; |
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|
897 oy = dx / 2 + ax; |
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|
898 } |
750fb808aa15
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|
899 |
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changeset
|
900 gdImageCopyRotated(dst, src, ox, oy, 0, 0, |
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changeset
|
901 dx + ax, dy + ay, ctx->angle); |
3878 | 902 gdImageDestroy(src); |
3884
ea712f4dc030
fix "image_filter rotate 180" and crop case
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parents:
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diff
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|
903 |
ea712f4dc030
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diff
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|
904 t = dx; |
ea712f4dc030
fix "image_filter rotate 180" and crop case
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parents:
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diff
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|
905 dx = dy; |
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fix "image_filter rotate 180" and crop case
Igor Sysoev <igor@sysoev.ru>
parents:
3878
diff
changeset
|
906 dy = t; |
3878 | 907 break; |
908 | |
909 case 180: | |
910 dst = ngx_http_image_new(r, dx, dy, palette); | |
911 if (dst == NULL) { | |
912 gdImageDestroy(src); | |
913 return NULL; | |
914 } | |
3910
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parents:
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|
915 gdImageCopyRotated(dst, src, dx / 2 - ax, dy / 2 - ay, 0, 0, |
750fb808aa15
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|
916 dx + ax, dy + ay, ctx->angle); |
3878 | 917 gdImageDestroy(src); |
918 break; | |
919 } | |
920 } | |
921 | |
2788 | 922 if (conf->filter == NGX_HTTP_IMAGE_CROP) { |
923 | |
924 src = dst; | |
925 | |
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|
926 if ((ngx_uint_t) dx > ctx->max_width) { |
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diff
changeset
|
927 ox = dx - ctx->max_width; |
2788 | 928 |
929 } else { | |
930 ox = 0; | |
931 } | |
932 | |
2998
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|
933 if ((ngx_uint_t) dy > ctx->max_height) { |
fa8503fd3647
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parents:
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changeset
|
934 oy = dy - ctx->max_height; |
2788 | 935 |
936 } else { | |
937 oy = 0; | |
938 } | |
939 | |
940 if (ox || oy) { | |
941 | |
942 dst = ngx_http_image_new(r, dx - ox, dy - oy, colors); | |
943 | |
944 if (dst == NULL) { | |
945 gdImageDestroy(src); | |
946 return NULL; | |
947 } | |
948 | |
949 ox /= 2; | |
950 oy /= 2; | |
951 | |
952 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
953 "image crop: %d x %d @ %d x %d", | |
954 dx, dy, ox, oy); | |
955 | |
3133
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|
956 if (colors == 0) { |
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|
957 gdImageSaveAlpha(dst, 1); |
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|
958 gdImageAlphaBlending(dst, 0); |
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|
959 } |
28a6aa24b453
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changeset
|
960 |
2788 | 961 gdImageCopy(dst, src, 0, 0, ox, oy, dx - ox, dy - oy); |
962 | |
3134 | 963 if (colors) { |
964 gdImageTrueColorToPalette(dst, 1, 256); | |
965 } | |
966 | |
2788 | 967 gdImageDestroy(src); |
968 } | |
969 } | |
970 | |
3117 | 971 if (transparent != -1 && colors) { |
972 gdImageColorTransparent(dst, gdImageColorExact(dst, red, green, blue)); | |
973 } | |
2788 | 974 |
4265
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
975 sharpen = ngx_http_image_filter_get_value(r, conf->shcv, conf->sharpen); |
01a7e78ff5a1
The "image_filter_sharpen" directive.
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parents:
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changeset
|
976 if (sharpen > 0) { |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
977 gdImageSharpen(dst, sharpen); |
01a7e78ff5a1
The "image_filter_sharpen" directive.
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|
978 } |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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|
979 |
5118
af155fc41deb
Image filter: the "image_filter_interlace" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4981
diff
changeset
|
980 gdImageInterlace(dst, (int) conf->interlace); |
af155fc41deb
Image filter: the "image_filter_interlace" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4981
diff
changeset
|
981 |
2788 | 982 out = ngx_http_image_out(r, ctx->type, dst, &size); |
983 | |
984 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
985 "image: %d x %d %d", sx, sy, colors); | |
986 | |
987 gdImageDestroy(dst); | |
988 ngx_pfree(r->pool, ctx->image); | |
989 | |
990 if (out == NULL) { | |
991 return NULL; | |
992 } | |
993 | |
994 cln = ngx_pool_cleanup_add(r->pool, 0); | |
995 if (cln == NULL) { | |
996 gdFree(out); | |
997 return NULL; | |
998 } | |
999 | |
1000 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
1001 if (b == NULL) { | |
1002 gdFree(out); | |
1003 return NULL; | |
1004 } | |
1005 | |
1006 cln->handler = ngx_http_image_cleanup; | |
1007 cln->data = out; | |
1008 | |
1009 b->pos = out; | |
1010 b->last = out + size; | |
1011 b->memory = 1; | |
1012 b->last_buf = 1; | |
1013 | |
1014 ngx_http_image_length(r, b); | |
1015 | |
1016 return b; | |
1017 } | |
1018 | |
1019 | |
1020 static gdImagePtr | |
1021 ngx_http_image_source(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
1022 { | |
1023 char *failed; | |
1024 gdImagePtr img; | |
1025 | |
1026 img = NULL; | |
1027 | |
1028 switch (ctx->type) { | |
1029 | |
1030 case NGX_HTTP_IMAGE_JPEG: | |
1031 img = gdImageCreateFromJpegPtr(ctx->length, ctx->image); | |
1032 failed = "gdImageCreateFromJpegPtr() failed"; | |
1033 break; | |
1034 | |
1035 case NGX_HTTP_IMAGE_GIF: | |
1036 img = gdImageCreateFromGifPtr(ctx->length, ctx->image); | |
1037 failed = "gdImageCreateFromGifPtr() failed"; | |
1038 break; | |
1039 | |
1040 case NGX_HTTP_IMAGE_PNG: | |
1041 img = gdImageCreateFromPngPtr(ctx->length, ctx->image); | |
1042 failed = "gdImageCreateFromPngPtr() failed"; | |
1043 break; | |
1044 | |
1045 default: | |
1046 failed = "unknown image type"; | |
1047 break; | |
1048 } | |
1049 | |
1050 if (img == NULL) { | |
1051 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, failed); | |
1052 } | |
1053 | |
1054 return img; | |
1055 } | |
1056 | |
1057 | |
1058 static gdImagePtr | |
1059 ngx_http_image_new(ngx_http_request_t *r, int w, int h, int colors) | |
1060 { | |
1061 gdImagePtr img; | |
1062 | |
1063 if (colors == 0) { | |
1064 img = gdImageCreateTrueColor(w, h); | |
1065 | |
1066 if (img == NULL) { | |
1067 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1068 "gdImageCreateTrueColor() failed"); | |
1069 return NULL; | |
1070 } | |
1071 | |
1072 } else { | |
1073 img = gdImageCreate(w, h); | |
1074 | |
1075 if (img == NULL) { | |
1076 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1077 "gdImageCreate() failed"); | |
1078 return NULL; | |
1079 } | |
1080 } | |
1081 | |
1082 return img; | |
1083 } | |
1084 | |
1085 | |
1086 static u_char * | |
1087 ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, gdImagePtr img, | |
1088 int *size) | |
1089 { | |
2848 | 1090 char *failed; |
1091 u_char *out; | |
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1092 ngx_int_t jq; |
2848 | 1093 ngx_http_image_filter_conf_t *conf; |
2788 | 1094 |
1095 out = NULL; | |
1096 | |
1097 switch (type) { | |
1098 | |
1099 case NGX_HTTP_IMAGE_JPEG: | |
2848 | 1100 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); |
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1101 |
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1102 jq = ngx_http_image_filter_get_value(r, conf->jqcv, conf->jpeg_quality); |
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1103 if (jq <= 0) { |
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1104 return NULL; |
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1105 } |
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1106 |
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1107 out = gdImageJpegPtr(img, size, jq); |
2788 | 1108 failed = "gdImageJpegPtr() failed"; |
1109 break; | |
1110 | |
1111 case NGX_HTTP_IMAGE_GIF: | |
1112 out = gdImageGifPtr(img, size); | |
1113 failed = "gdImageGifPtr() failed"; | |
1114 break; | |
1115 | |
1116 case NGX_HTTP_IMAGE_PNG: | |
1117 out = gdImagePngPtr(img, size); | |
1118 failed = "gdImagePngPtr() failed"; | |
1119 break; | |
1120 | |
1121 default: | |
1122 failed = "unknown image type"; | |
1123 break; | |
1124 } | |
1125 | |
1126 if (out == NULL) { | |
1127 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, failed); | |
1128 } | |
1129 | |
1130 return out; | |
1131 } | |
1132 | |
1133 | |
1134 static void | |
1135 ngx_http_image_cleanup(void *data) | |
1136 { | |
1137 gdFree(data); | |
1138 } | |
1139 | |
1140 | |
2998
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1141 static ngx_uint_t |
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1142 ngx_http_image_filter_get_value(ngx_http_request_t *r, |
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1143 ngx_http_complex_value_t *cv, ngx_uint_t v) |
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1144 { |
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1145 ngx_str_t val; |
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1146 |
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1147 if (cv == NULL) { |
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1148 return v; |
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1149 } |
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1150 |
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1151 if (ngx_http_complex_value(r, cv, &val) != NGX_OK) { |
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1152 return 0; |
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1153 } |
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1154 |
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1155 return ngx_http_image_filter_value(&val); |
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1156 } |
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1157 |
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1158 |
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1159 static ngx_uint_t |
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1160 ngx_http_image_filter_value(ngx_str_t *value) |
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1161 { |
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1162 ngx_int_t n; |
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1163 |
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1164 if (value->len == 1 && value->data[0] == '-') { |
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1165 return (ngx_uint_t) -1; |
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1166 } |
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1167 |
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1168 n = ngx_atoi(value->data, value->len); |
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1169 |
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1170 if (n > 0) { |
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1171 return (ngx_uint_t) n; |
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1172 } |
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1173 |
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1174 return 0; |
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1175 } |
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1176 |
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1177 |
2788 | 1178 static void * |
1179 ngx_http_image_filter_create_conf(ngx_conf_t *cf) | |
1180 { | |
1181 ngx_http_image_filter_conf_t *conf; | |
1182 | |
1183 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_image_filter_conf_t)); | |
1184 if (conf == NULL) { | |
2912
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1185 return NULL; |
2788 | 1186 } |
1187 | |
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1188 /* |
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1189 * set by ngx_pcalloc(): |
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1190 * |
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1191 * conf->width = 0; |
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1192 * conf->height = 0; |
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1193 * conf->angle = 0; |
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1194 * conf->wcv = NULL; |
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1195 * conf->hcv = NULL; |
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1196 * conf->acv = NULL; |
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1197 * conf->jqcv = NULL; |
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1198 * conf->shcv = NULL; |
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1199 */ |
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1200 |
2788 | 1201 conf->filter = NGX_CONF_UNSET_UINT; |
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1202 conf->jpeg_quality = NGX_CONF_UNSET_UINT; |
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1203 conf->sharpen = NGX_CONF_UNSET_UINT; |
3134 | 1204 conf->transparency = NGX_CONF_UNSET; |
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1205 conf->interlace = NGX_CONF_UNSET; |
2788 | 1206 conf->buffer_size = NGX_CONF_UNSET_SIZE; |
1207 | |
1208 return conf; | |
1209 } | |
1210 | |
1211 | |
1212 static char * | |
1213 ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
1214 { | |
1215 ngx_http_image_filter_conf_t *prev = parent; | |
1216 ngx_http_image_filter_conf_t *conf = child; | |
1217 | |
1218 if (conf->filter == NGX_CONF_UNSET_UINT) { | |
1219 | |
1220 if (prev->filter == NGX_CONF_UNSET_UINT) { | |
1221 conf->filter = NGX_HTTP_IMAGE_OFF; | |
1222 | |
1223 } else { | |
1224 conf->filter = prev->filter; | |
1225 conf->width = prev->width; | |
1226 conf->height = prev->height; | |
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1227 conf->angle = prev->angle; |
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1228 conf->wcv = prev->wcv; |
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1229 conf->hcv = prev->hcv; |
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1230 conf->acv = prev->acv; |
2788 | 1231 } |
1232 } | |
1233 | |
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1234 if (conf->jpeg_quality == NGX_CONF_UNSET_UINT) { |
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1235 |
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1236 /* 75 is libjpeg default quality */ |
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1237 ngx_conf_merge_uint_value(conf->jpeg_quality, prev->jpeg_quality, 75); |
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1238 |
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1239 if (conf->jqcv == NULL) { |
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1240 conf->jqcv = prev->jqcv; |
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1241 } |
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1242 } |
2848 | 1243 |
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1244 if (conf->sharpen == NGX_CONF_UNSET_UINT) { |
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1245 ngx_conf_merge_uint_value(conf->sharpen, prev->sharpen, 0); |
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1246 |
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1247 if (conf->shcv == NULL) { |
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1248 conf->shcv = prev->shcv; |
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1249 } |
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1250 } |
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1251 |
3134 | 1252 ngx_conf_merge_value(conf->transparency, prev->transparency, 1); |
1253 | |
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1254 ngx_conf_merge_value(conf->interlace, prev->interlace, 0); |
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1255 |
2788 | 1256 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, |
1257 1 * 1024 * 1024); | |
1258 | |
1259 return NGX_CONF_OK; | |
1260 } | |
1261 | |
1262 | |
1263 static char * | |
1264 ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
1265 { | |
1266 ngx_http_image_filter_conf_t *imcf = conf; | |
1267 | |
2998
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variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1268 ngx_str_t *value; |
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diff
changeset
|
1269 ngx_int_t n; |
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diff
changeset
|
1270 ngx_uint_t i; |
fa8503fd3647
variables support in image_filter
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diff
changeset
|
1271 ngx_http_complex_value_t cv; |
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variables support in image_filter
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parents:
2918
diff
changeset
|
1272 ngx_http_compile_complex_value_t ccv; |
2788 | 1273 |
1274 value = cf->args->elts; | |
1275 | |
1276 i = 1; | |
1277 | |
1278 if (cf->args->nelts == 2) { | |
1279 if (ngx_strcmp(value[i].data, "off") == 0) { | |
1280 imcf->filter = NGX_HTTP_IMAGE_OFF; | |
1281 | |
1282 } else if (ngx_strcmp(value[i].data, "test") == 0) { | |
1283 imcf->filter = NGX_HTTP_IMAGE_TEST; | |
1284 | |
1285 } else if (ngx_strcmp(value[i].data, "size") == 0) { | |
1286 imcf->filter = NGX_HTTP_IMAGE_SIZE; | |
1287 | |
1288 } else { | |
1289 goto failed; | |
1290 } | |
1291 | |
1292 return NGX_CONF_OK; | |
3878 | 1293 |
1294 } else if (cf->args->nelts == 3) { | |
1295 | |
1296 if (ngx_strcmp(value[i].data, "rotate") == 0) { | |
4308
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1297 if (imcf->filter != NGX_HTTP_IMAGE_RESIZE |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1298 && imcf->filter != NGX_HTTP_IMAGE_CROP) |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1299 { |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1300 imcf->filter = NGX_HTTP_IMAGE_ROTATE; |
39982fa69482
Fixed "rotate" to always work when combined with "resize/crop".
Ruslan Ermilov <ru@nginx.com>
parents:
4307
diff
changeset
|
1301 } |
3878 | 1302 |
1303 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); | |
1304 | |
1305 ccv.cf = cf; | |
1306 ccv.value = &value[++i]; | |
1307 ccv.complex_value = &cv; | |
1308 | |
1309 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { | |
1310 return NGX_CONF_ERROR; | |
1311 } | |
1312 | |
1313 if (cv.lengths == NULL) { | |
1314 n = ngx_http_image_filter_value(&value[i]); | |
1315 | |
1316 if (n != 90 && n != 180 && n != 270) { | |
1317 goto failed; | |
1318 } | |
1319 | |
1320 imcf->angle = (ngx_uint_t) n; | |
1321 | |
1322 } else { | |
1323 imcf->acv = ngx_palloc(cf->pool, | |
1324 sizeof(ngx_http_complex_value_t)); | |
1325 if (imcf->acv == NULL) { | |
1326 return NGX_CONF_ERROR; | |
1327 } | |
1328 | |
1329 *imcf->acv = cv; | |
1330 } | |
1331 | |
1332 return NGX_CONF_OK; | |
1333 | |
1334 } else { | |
1335 goto failed; | |
1336 } | |
2788 | 1337 } |
1338 | |
1339 if (ngx_strcmp(value[i].data, "resize") == 0) { | |
1340 imcf->filter = NGX_HTTP_IMAGE_RESIZE; | |
1341 | |
1342 } else if (ngx_strcmp(value[i].data, "crop") == 0) { | |
1343 imcf->filter = NGX_HTTP_IMAGE_CROP; | |
1344 | |
1345 } else { | |
1346 goto failed; | |
1347 } | |
1348 | |
2998
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diff
changeset
|
1349 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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variables support in image_filter
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diff
changeset
|
1350 |
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variables support in image_filter
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diff
changeset
|
1351 ccv.cf = cf; |
fa8503fd3647
variables support in image_filter
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parents:
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diff
changeset
|
1352 ccv.value = &value[++i]; |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1353 ccv.complex_value = &cv; |
2788 | 1354 |
2998
fa8503fd3647
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parents:
2918
diff
changeset
|
1355 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1356 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
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parents:
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diff
changeset
|
1357 } |
2788 | 1358 |
2998
fa8503fd3647
variables support in image_filter
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parents:
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diff
changeset
|
1359 if (cv.lengths == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1360 n = ngx_http_image_filter_value(&value[i]); |
fa8503fd3647
variables support in image_filter
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parents:
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diff
changeset
|
1361 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
1362 if (n == 0) { |
2788 | 1363 goto failed; |
1364 } | |
1365 | |
1366 imcf->width = (ngx_uint_t) n; | |
2998
fa8503fd3647
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parents:
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diff
changeset
|
1367 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
1368 } else { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
1369 imcf->wcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
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variables support in image_filter
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parents:
2918
diff
changeset
|
1370 if (imcf->wcv == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1371 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
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parents:
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diff
changeset
|
1372 } |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
1373 |
fa8503fd3647
variables support in image_filter
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parents:
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diff
changeset
|
1374 *imcf->wcv = cv; |
2788 | 1375 } |
1376 | |
2998
fa8503fd3647
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2918
diff
changeset
|
1377 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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variables support in image_filter
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diff
changeset
|
1378 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
1379 ccv.cf = cf; |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1380 ccv.value = &value[++i]; |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1381 ccv.complex_value = &cv; |
2788 | 1382 |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1383 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1384 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1385 } |
2788 | 1386 |
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1387 if (cv.lengths == NULL) { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1388 n = ngx_http_image_filter_value(&value[i]); |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1389 |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1390 if (n == 0) { |
2788 | 1391 goto failed; |
1392 } | |
1393 | |
1394 imcf->height = (ngx_uint_t) n; | |
2998
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1395 |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1396 } else { |
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1397 imcf->hcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1398 if (imcf->hcv == NULL) { |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1399 return NGX_CONF_ERROR; |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1400 } |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1401 |
fa8503fd3647
variables support in image_filter
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parents:
2918
diff
changeset
|
1402 *imcf->hcv = cv; |
2788 | 1403 } |
1404 | |
1405 return NGX_CONF_OK; | |
1406 | |
1407 failed: | |
1408 | |
1409 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", | |
1410 &value[i]); | |
1411 | |
1412 return NGX_CONF_ERROR; | |
1413 } | |
1414 | |
1415 | |
3745
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1416 static char * |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1417 ngx_http_image_filter_jpeg_quality(ngx_conf_t *cf, ngx_command_t *cmd, |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1418 void *conf) |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1419 { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1420 ngx_http_image_filter_conf_t *imcf = conf; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1421 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1422 ngx_str_t *value; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1423 ngx_int_t n; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1424 ngx_http_complex_value_t cv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1425 ngx_http_compile_complex_value_t ccv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1426 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1427 value = cf->args->elts; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1428 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1429 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
1430 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1431 ccv.cf = cf; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1432 ccv.value = &value[1]; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1433 ccv.complex_value = &cv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1434 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1435 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1436 return NGX_CONF_ERROR; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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diff
changeset
|
1437 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1438 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1439 if (cv.lengths == NULL) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1440 n = ngx_http_image_filter_value(&value[1]); |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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diff
changeset
|
1441 |
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parents:
3722
diff
changeset
|
1442 if (n <= 0) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1443 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
4307 | 1444 "invalid value \"%V\"", &value[1]); |
3745
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1445 return NGX_CONF_ERROR; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1446 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
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diff
changeset
|
1447 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1448 imcf->jpeg_quality = (ngx_uint_t) n; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1449 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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diff
changeset
|
1450 } else { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1451 imcf->jqcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1452 if (imcf->jqcv == NULL) { |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1453 return NGX_CONF_ERROR; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1454 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
1455 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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parents:
3722
diff
changeset
|
1456 *imcf->jqcv = cv; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1457 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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diff
changeset
|
1458 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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3722
diff
changeset
|
1459 return NGX_CONF_OK; |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
1460 } |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
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diff
changeset
|
1461 |
f5fa9d2e09b6
image_filter_jpeg_quality supports variables
Igor Sysoev <igor@sysoev.ru>
parents:
3722
diff
changeset
|
1462 |
4265
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1463 static char * |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1464 ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd, |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
diff
changeset
|
1465 void *conf) |
01a7e78ff5a1
The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
3910
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1466 { |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1467 ngx_http_image_filter_conf_t *imcf = conf; |
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The "image_filter_sharpen" directive.
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parents:
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1468 |
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The "image_filter_sharpen" directive.
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parents:
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1469 ngx_str_t *value; |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
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1470 ngx_int_t n; |
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1471 ngx_http_complex_value_t cv; |
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parents:
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1472 ngx_http_compile_complex_value_t ccv; |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1473 |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1474 value = cf->args->elts; |
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The "image_filter_sharpen" directive.
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parents:
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1475 |
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The "image_filter_sharpen" directive.
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1476 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1477 |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1478 ccv.cf = cf; |
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The "image_filter_sharpen" directive.
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parents:
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1479 ccv.value = &value[1]; |
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The "image_filter_sharpen" directive.
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parents:
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1480 ccv.complex_value = &cv; |
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The "image_filter_sharpen" directive.
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parents:
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1481 |
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The "image_filter_sharpen" directive.
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1482 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
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The "image_filter_sharpen" directive.
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1483 return NGX_CONF_ERROR; |
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The "image_filter_sharpen" directive.
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parents:
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1484 } |
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The "image_filter_sharpen" directive.
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parents:
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1485 |
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The "image_filter_sharpen" directive.
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1486 if (cv.lengths == NULL) { |
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The "image_filter_sharpen" directive.
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parents:
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1487 n = ngx_http_image_filter_value(&value[1]); |
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The "image_filter_sharpen" directive.
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parents:
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1488 |
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The "image_filter_sharpen" directive.
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1489 if (n < 0) { |
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1490 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
4307 | 1491 "invalid value \"%V\"", &value[1]); |
4265
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1492 return NGX_CONF_ERROR; |
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Igor Sysoev <igor@sysoev.ru>
parents:
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1493 } |
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The "image_filter_sharpen" directive.
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parents:
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1494 |
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The "image_filter_sharpen" directive.
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1495 imcf->sharpen = (ngx_uint_t) n; |
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The "image_filter_sharpen" directive.
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1496 |
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The "image_filter_sharpen" directive.
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1497 } else { |
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The "image_filter_sharpen" directive.
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1498 imcf->shcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
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1499 if (imcf->shcv == NULL) { |
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The "image_filter_sharpen" directive.
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parents:
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1500 return NGX_CONF_ERROR; |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1501 } |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1502 |
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The "image_filter_sharpen" directive.
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1503 *imcf->shcv = cv; |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1504 } |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1505 |
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The "image_filter_sharpen" directive.
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parents:
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1506 return NGX_CONF_OK; |
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parents:
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1507 } |
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The "image_filter_sharpen" directive.
Igor Sysoev <igor@sysoev.ru>
parents:
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1508 |
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The "image_filter_sharpen" directive.
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1509 |
2788 | 1510 static ngx_int_t |
1511 ngx_http_image_filter_init(ngx_conf_t *cf) | |
1512 { | |
1513 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
1514 ngx_http_top_header_filter = ngx_http_image_header_filter; | |
1515 | |
1516 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
1517 ngx_http_top_body_filter = ngx_http_image_body_filter; | |
1518 | |
1519 return NGX_OK; | |
1520 } |