Mercurial > hg > nginx
annotate src/http/modules/ngx_http_image_filter_module.c @ 3393:fbf6d83ce288
style fix
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 22 Dec 2009 10:45:29 +0000 |
| parents | e6f5cb5eff8b |
| children | 11965c62b92c |
| rev | line source |
|---|---|
| 2788 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 #include <ngx_config.h> | |
| 8 #include <ngx_core.h> | |
| 9 #include <ngx_http.h> | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
10 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
11 #include <gd.h> |
| 2788 | 12 |
| 13 | |
| 14 #define NGX_HTTP_IMAGE_OFF 0 | |
| 15 #define NGX_HTTP_IMAGE_TEST 1 | |
| 16 #define NGX_HTTP_IMAGE_SIZE 2 | |
| 17 #define NGX_HTTP_IMAGE_RESIZE 3 | |
| 18 #define NGX_HTTP_IMAGE_CROP 4 | |
| 19 | |
| 20 | |
| 21 #define NGX_HTTP_IMAGE_START 0 | |
| 22 #define NGX_HTTP_IMAGE_READ 1 | |
| 23 #define NGX_HTTP_IMAGE_PROCESS 2 | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
24 #define NGX_HTTP_IMAGE_PASS 3 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
25 #define NGX_HTTP_IMAGE_DONE 4 |
| 2788 | 26 |
| 27 | |
| 28 #define NGX_HTTP_IMAGE_NONE 0 | |
| 29 #define NGX_HTTP_IMAGE_JPEG 1 | |
| 30 #define NGX_HTTP_IMAGE_GIF 2 | |
| 31 #define NGX_HTTP_IMAGE_PNG 3 | |
| 32 | |
| 33 | |
| 34 #define NGX_HTTP_IMAGE_BUFFERED 0x08 | |
| 35 | |
| 36 | |
| 37 typedef struct { | |
| 38 ngx_uint_t filter; | |
| 39 ngx_uint_t width; | |
| 40 ngx_uint_t height; | |
| 2848 | 41 ngx_int_t jpeg_quality; |
| 2788 | 42 |
| 3134 | 43 ngx_flag_t transparency; |
| 44 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
45 ngx_http_complex_value_t *wcv; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
46 ngx_http_complex_value_t *hcv; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
47 |
| 2788 | 48 size_t buffer_size; |
| 49 } ngx_http_image_filter_conf_t; | |
| 50 | |
| 51 | |
| 52 typedef struct { | |
| 53 u_char *image; | |
| 54 u_char *last; | |
| 55 | |
| 56 size_t length; | |
| 57 | |
| 58 ngx_uint_t width; | |
| 59 ngx_uint_t height; | |
| 60 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
61 ngx_uint_t max_width; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
62 ngx_uint_t max_height; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
63 |
| 2788 | 64 ngx_uint_t phase; |
| 65 ngx_uint_t type; | |
| 66 } ngx_http_image_filter_ctx_t; | |
| 67 | |
| 68 | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
69 static ngx_int_t ngx_http_image_send(ngx_http_request_t *r, |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
70 ngx_http_image_filter_ctx_t *ctx, ngx_chain_t *in); |
| 2788 | 71 static ngx_uint_t ngx_http_image_test(ngx_http_request_t *r, ngx_chain_t *in); |
| 72 static ngx_int_t ngx_http_image_read(ngx_http_request_t *r, ngx_chain_t *in); | |
| 73 static ngx_buf_t *ngx_http_image_process(ngx_http_request_t *r); | |
| 74 static ngx_buf_t *ngx_http_image_json(ngx_http_request_t *r, | |
| 75 ngx_http_image_filter_ctx_t *ctx); | |
| 76 static ngx_buf_t *ngx_http_image_asis(ngx_http_request_t *r, | |
| 77 ngx_http_image_filter_ctx_t *ctx); | |
| 78 static void ngx_http_image_length(ngx_http_request_t *r, ngx_buf_t *b); | |
| 79 static ngx_int_t ngx_http_image_size(ngx_http_request_t *r, | |
| 80 ngx_http_image_filter_ctx_t *ctx); | |
| 81 | |
| 82 static ngx_buf_t *ngx_http_image_resize(ngx_http_request_t *r, | |
| 83 ngx_http_image_filter_ctx_t *ctx); | |
| 84 static gdImagePtr ngx_http_image_source(ngx_http_request_t *r, | |
| 85 ngx_http_image_filter_ctx_t *ctx); | |
| 86 static gdImagePtr ngx_http_image_new(ngx_http_request_t *r, int w, int h, | |
| 87 int colors); | |
| 88 static u_char *ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, | |
| 89 gdImagePtr img, int *size); | |
| 90 static void ngx_http_image_cleanup(void *data); | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
91 static ngx_uint_t ngx_http_image_filter_get_value(ngx_http_request_t *r, |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
92 ngx_http_complex_value_t *cv, ngx_uint_t v); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
93 static ngx_uint_t ngx_http_image_filter_value(ngx_str_t *value); |
| 2788 | 94 |
| 95 | |
| 96 static void *ngx_http_image_filter_create_conf(ngx_conf_t *cf); | |
| 97 static char *ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, | |
| 98 void *child); | |
| 99 static char *ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 100 void *conf); | |
| 101 static ngx_int_t ngx_http_image_filter_init(ngx_conf_t *cf); | |
| 102 | |
| 103 | |
| 104 static ngx_command_t ngx_http_image_filter_commands[] = { | |
| 105 | |
| 106 { ngx_string("image_filter"), | |
| 107 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE13, | |
| 108 ngx_http_image_filter, | |
| 109 NGX_HTTP_LOC_CONF_OFFSET, | |
| 110 0, | |
| 111 NULL }, | |
| 112 | |
| 2848 | 113 { ngx_string("image_filter_jpeg_quality"), |
| 114 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 115 ngx_conf_set_num_slot, | |
| 116 NGX_HTTP_LOC_CONF_OFFSET, | |
| 117 offsetof(ngx_http_image_filter_conf_t, jpeg_quality), | |
| 118 NULL }, | |
| 119 | |
| 3134 | 120 { ngx_string("image_filter_transparency"), |
| 121 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 122 ngx_conf_set_flag_slot, | |
| 123 NGX_HTTP_LOC_CONF_OFFSET, | |
| 124 offsetof(ngx_http_image_filter_conf_t, transparency), | |
| 125 NULL }, | |
| 126 | |
| 2788 | 127 { ngx_string("image_filter_buffer"), |
| 128 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 129 ngx_conf_set_size_slot, | |
| 130 NGX_HTTP_LOC_CONF_OFFSET, | |
| 131 offsetof(ngx_http_image_filter_conf_t, buffer_size), | |
| 132 NULL }, | |
| 133 | |
| 134 ngx_null_command | |
| 135 }; | |
| 136 | |
| 137 | |
| 138 static ngx_http_module_t ngx_http_image_filter_module_ctx = { | |
| 139 NULL, /* preconfiguration */ | |
| 140 ngx_http_image_filter_init, /* postconfiguration */ | |
| 141 | |
| 142 NULL, /* create main configuration */ | |
| 143 NULL, /* init main configuration */ | |
| 144 | |
| 145 NULL, /* create server configuration */ | |
| 146 NULL, /* merge server configuration */ | |
| 147 | |
| 148 ngx_http_image_filter_create_conf, /* create location configuration */ | |
| 149 ngx_http_image_filter_merge_conf /* merge location configuration */ | |
| 150 }; | |
| 151 | |
| 152 | |
| 153 ngx_module_t ngx_http_image_filter_module = { | |
| 154 NGX_MODULE_V1, | |
| 155 &ngx_http_image_filter_module_ctx, /* module context */ | |
| 156 ngx_http_image_filter_commands, /* module directives */ | |
| 157 NGX_HTTP_MODULE, /* module type */ | |
| 158 NULL, /* init master */ | |
| 159 NULL, /* init module */ | |
| 160 NULL, /* init process */ | |
| 161 NULL, /* init thread */ | |
| 162 NULL, /* exit thread */ | |
| 163 NULL, /* exit process */ | |
| 164 NULL, /* exit master */ | |
| 165 NGX_MODULE_V1_PADDING | |
| 166 }; | |
| 167 | |
| 168 | |
| 169 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 170 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
| 171 | |
| 172 | |
| 173 static ngx_str_t ngx_http_image_types[] = { | |
| 174 ngx_string("image/jpeg"), | |
| 175 ngx_string("image/gif"), | |
| 176 ngx_string("image/png") | |
| 177 }; | |
| 178 | |
| 179 | |
| 180 static ngx_int_t | |
| 181 ngx_http_image_header_filter(ngx_http_request_t *r) | |
| 182 { | |
| 183 off_t len; | |
| 184 ngx_http_image_filter_ctx_t *ctx; | |
| 185 ngx_http_image_filter_conf_t *conf; | |
| 186 | |
| 187 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) { | |
| 188 return ngx_http_next_header_filter(r); | |
| 189 } | |
| 190 | |
|
2834
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
191 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); |
|
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
192 |
|
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
193 if (ctx) { |
|
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
194 ngx_http_set_ctx(r, NULL, ngx_http_image_filter_module); |
|
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
195 return ngx_http_next_header_filter(r); |
|
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
196 } |
|
0449d289256c
test finalized image filter context before testing image_filter off
Igor Sysoev <igor@sysoev.ru>
parents:
2821
diff
changeset
|
197 |
| 2788 | 198 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); |
| 199 | |
| 200 if (conf->filter == NGX_HTTP_IMAGE_OFF) { | |
| 201 return ngx_http_next_header_filter(r); | |
| 202 } | |
| 203 | |
| 204 if (r->headers_out.content_type.len | |
| 205 >= sizeof("multipart/x-mixed-replace") - 1 | |
| 206 && ngx_strncasecmp(r->headers_out.content_type.data, | |
| 207 (u_char *) "multipart/x-mixed-replace", | |
| 208 sizeof("multipart/x-mixed-replace") - 1) | |
| 209 == 0) | |
| 210 { | |
| 211 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 212 "image filter: multipart/x-mixed-replace response"); | |
| 213 | |
| 214 return NGX_ERROR; | |
| 215 } | |
| 216 | |
| 217 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_image_filter_ctx_t)); | |
| 218 if (ctx == NULL) { | |
| 219 return NGX_ERROR; | |
| 220 } | |
| 221 | |
| 222 ngx_http_set_ctx(r, ctx, ngx_http_image_filter_module); | |
| 223 | |
| 224 len = r->headers_out.content_length_n; | |
| 225 | |
|
2795
d82d08314f78
fix building ngx_http_image_filter_module on 64-bit platforms
Igor Sysoev <igor@sysoev.ru>
parents:
2788
diff
changeset
|
226 if (len != -1 && len > (off_t) conf->buffer_size) { |
| 2788 | 227 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| 228 "image filter: too big response: %O", len); | |
| 229 | |
| 230 return NGX_ERROR; | |
| 231 } | |
| 232 | |
| 233 if (len == -1) { | |
| 234 ctx->length = conf->buffer_size; | |
| 235 | |
| 236 } else { | |
| 237 ctx->length = (size_t) len; | |
| 238 } | |
| 239 | |
| 240 if (r->headers_out.refresh) { | |
| 241 r->headers_out.refresh->hash = 0; | |
| 242 } | |
| 243 | |
| 244 r->main_filter_need_in_memory = 1; | |
| 245 r->allow_ranges = 0; | |
| 246 | |
| 247 return NGX_OK; | |
| 248 } | |
| 249 | |
| 250 | |
| 251 static ngx_int_t | |
| 252 ngx_http_image_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
| 253 { | |
| 254 ngx_int_t rc; | |
| 255 ngx_str_t *ct; | |
| 256 ngx_chain_t out; | |
| 257 ngx_http_image_filter_ctx_t *ctx; | |
| 258 ngx_http_image_filter_conf_t *conf; | |
| 259 | |
| 260 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "image filter"); | |
| 261 | |
| 262 if (in == NULL) { | |
| 263 return ngx_http_next_body_filter(r, in); | |
| 264 } | |
| 265 | |
| 266 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
| 267 | |
| 268 if (ctx == NULL) { | |
| 269 return ngx_http_next_body_filter(r, in); | |
| 270 } | |
| 271 | |
| 272 switch (ctx->phase) { | |
| 273 | |
| 274 case NGX_HTTP_IMAGE_START: | |
| 275 | |
| 276 ctx->type = ngx_http_image_test(r, in); | |
| 277 | |
| 278 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
| 279 | |
| 280 if (ctx->type == NGX_HTTP_IMAGE_NONE) { | |
| 281 | |
| 282 if (conf->filter == NGX_HTTP_IMAGE_SIZE) { | |
| 283 out.buf = ngx_http_image_json(r, NULL); | |
| 284 | |
| 285 if (out.buf) { | |
| 286 out.next = NULL; | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
287 ctx->phase = NGX_HTTP_IMAGE_DONE; |
| 2788 | 288 |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
289 return ngx_http_image_send(r, ctx, &out); |
| 2788 | 290 } |
| 291 } | |
| 292 | |
| 293 return ngx_http_filter_finalize_request(r, | |
|
2821
26e06e009ced
allow to pass image filter errors via the same location where the filter is set
Igor Sysoev <igor@sysoev.ru>
parents:
2819
diff
changeset
|
294 &ngx_http_image_filter_module, |
| 2788 | 295 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
| 296 } | |
| 297 | |
| 298 /* override content type */ | |
| 299 | |
| 300 ct = &ngx_http_image_types[ctx->type - 1]; | |
| 301 r->headers_out.content_type_len = ct->len; | |
| 302 r->headers_out.content_type = *ct; | |
|
2882
896db5a09bd2
reset content_type hash value, this fixes a bug when XSLT responses
Igor Sysoev <igor@sysoev.ru>
parents:
2848
diff
changeset
|
303 r->headers_out.content_type_lowcase = NULL; |
| 2788 | 304 |
| 305 if (conf->filter == NGX_HTTP_IMAGE_TEST) { | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
306 ctx->phase = NGX_HTTP_IMAGE_PASS; |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
307 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
308 return ngx_http_image_send(r, ctx, in); |
| 2788 | 309 } |
| 310 | |
| 311 ctx->phase = NGX_HTTP_IMAGE_READ; | |
| 312 | |
| 313 /* fall through */ | |
| 314 | |
| 315 case NGX_HTTP_IMAGE_READ: | |
| 316 | |
| 317 rc = ngx_http_image_read(r, in); | |
| 318 | |
| 319 if (rc == NGX_AGAIN) { | |
| 320 return NGX_OK; | |
| 321 } | |
| 322 | |
| 323 if (rc == NGX_ERROR) { | |
| 324 return ngx_http_filter_finalize_request(r, | |
|
2821
26e06e009ced
allow to pass image filter errors via the same location where the filter is set
Igor Sysoev <igor@sysoev.ru>
parents:
2819
diff
changeset
|
325 &ngx_http_image_filter_module, |
| 2788 | 326 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
| 327 } | |
| 328 | |
| 329 /* fall through */ | |
| 330 | |
| 331 case NGX_HTTP_IMAGE_PROCESS: | |
| 332 | |
| 333 out.buf = ngx_http_image_process(r); | |
| 334 | |
| 335 if (out.buf == NULL) { | |
| 336 return ngx_http_filter_finalize_request(r, | |
|
2821
26e06e009ced
allow to pass image filter errors via the same location where the filter is set
Igor Sysoev <igor@sysoev.ru>
parents:
2819
diff
changeset
|
337 &ngx_http_image_filter_module, |
| 2788 | 338 NGX_HTTP_UNSUPPORTED_MEDIA_TYPE); |
| 339 } | |
| 340 | |
| 341 out.next = NULL; | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
342 ctx->phase = NGX_HTTP_IMAGE_PASS; |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
343 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
344 return ngx_http_image_send(r, ctx, &out); |
| 2788 | 345 |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
346 case NGX_HTTP_IMAGE_PASS: |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
347 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
348 return ngx_http_next_body_filter(r, in); |
| 2788 | 349 |
| 350 default: /* NGX_HTTP_IMAGE_DONE */ | |
| 351 | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
352 rc = ngx_http_next_body_filter(r, NULL); |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
353 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
354 /* NGX_ERROR resets any pending data */ |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
355 return (rc == NGX_OK) ? NGX_ERROR : rc; |
| 2788 | 356 } |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
357 } |
| 2788 | 358 |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
359 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
360 static ngx_int_t |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
361 ngx_http_image_send(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx, |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
362 ngx_chain_t *in) |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
363 { |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
364 ngx_int_t rc; |
| 2788 | 365 |
| 366 rc = ngx_http_next_header_filter(r); | |
| 367 | |
| 368 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
369 return NGX_ERROR; |
| 2788 | 370 } |
| 371 | |
|
2819
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
372 rc = ngx_http_next_body_filter(r, in); |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
373 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
374 if (ctx->phase == NGX_HTTP_IMAGE_DONE) { |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
375 /* NGX_ERROR resets any pending data */ |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
376 return (rc == NGX_OK) ? NGX_ERROR : rc; |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
377 } |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
378 |
|
43fe53832da7
handle big responses for "size" and "test" image_filters
Igor Sysoev <igor@sysoev.ru>
parents:
2795
diff
changeset
|
379 return rc; |
| 2788 | 380 } |
| 381 | |
| 382 | |
| 383 static ngx_uint_t | |
| 384 ngx_http_image_test(ngx_http_request_t *r, ngx_chain_t *in) | |
| 385 { | |
| 386 u_char *p; | |
| 387 | |
| 388 p = in->buf->pos; | |
| 389 | |
| 390 if (in->buf->last - p < 16) { | |
| 391 return NGX_HTTP_IMAGE_NONE; | |
| 392 } | |
| 393 | |
| 394 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 395 "image filter: \"%c%c\"", p[0], p[1]); | |
| 396 | |
| 397 if (p[0] == 0xff && p[1] == 0xd8) { | |
| 398 | |
| 399 /* JPEG */ | |
| 400 | |
| 401 return NGX_HTTP_IMAGE_JPEG; | |
| 402 | |
| 403 } else if (p[0] == 'G' && p[1] == 'I' && p[2] == 'F' && p[3] == '8' | |
| 2918 | 404 && p[5] == 'a') |
| 2788 | 405 { |
| 2918 | 406 if (p[4] == '9' || p[4] == '7') { |
| 407 /* GIF */ | |
| 408 return NGX_HTTP_IMAGE_GIF; | |
| 409 } | |
| 2788 | 410 |
| 411 } else if (p[0] == 0x89 && p[1] == 'P' && p[2] == 'N' && p[3] == 'G' | |
| 412 && p[4] == 0x0d && p[5] == 0x0a && p[6] == 0x1a && p[7] == 0x0a) | |
| 413 { | |
| 414 /* PNG */ | |
| 415 | |
| 416 return NGX_HTTP_IMAGE_PNG; | |
| 417 } | |
| 418 | |
| 419 return NGX_HTTP_IMAGE_NONE; | |
| 420 } | |
| 421 | |
| 422 | |
| 423 static ngx_int_t | |
| 424 ngx_http_image_read(ngx_http_request_t *r, ngx_chain_t *in) | |
| 425 { | |
| 426 u_char *p; | |
| 427 size_t size, rest; | |
| 428 ngx_buf_t *b; | |
| 429 ngx_chain_t *cl; | |
| 430 ngx_http_image_filter_ctx_t *ctx; | |
| 431 | |
| 432 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
| 433 | |
| 434 if (ctx->image == NULL) { | |
| 435 ctx->image = ngx_palloc(r->pool, ctx->length); | |
| 436 if (ctx->image == NULL) { | |
| 437 return NGX_ERROR; | |
| 438 } | |
| 439 | |
| 440 ctx->last = ctx->image; | |
| 441 } | |
| 442 | |
| 443 p = ctx->last; | |
| 444 | |
| 445 for (cl = in; cl; cl = cl->next) { | |
| 446 | |
| 447 b = cl->buf; | |
| 448 size = b->last - b->pos; | |
| 449 | |
| 450 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 451 "image buf: %uz", size); | |
| 452 | |
| 453 rest = ctx->image + ctx->length - p; | |
| 454 size = (rest < size) ? rest : size; | |
| 455 | |
| 456 p = ngx_cpymem(p, b->pos, size); | |
| 457 b->pos += size; | |
| 458 | |
| 459 if (b->last_buf) { | |
| 460 ctx->last = p; | |
| 461 return NGX_OK; | |
| 462 } | |
| 463 } | |
| 464 | |
| 465 ctx->last = p; | |
| 466 r->connection->buffered |= NGX_HTTP_IMAGE_BUFFERED; | |
| 467 | |
| 468 return NGX_AGAIN; | |
| 469 } | |
| 470 | |
| 471 | |
| 472 static ngx_buf_t * | |
| 473 ngx_http_image_process(ngx_http_request_t *r) | |
| 474 { | |
| 475 ngx_int_t rc; | |
| 476 ngx_http_image_filter_ctx_t *ctx; | |
| 477 ngx_http_image_filter_conf_t *conf; | |
| 478 | |
| 479 r->connection->buffered &= ~NGX_HTTP_IMAGE_BUFFERED; | |
| 480 | |
| 481 ctx = ngx_http_get_module_ctx(r, ngx_http_image_filter_module); | |
| 482 | |
| 483 rc = ngx_http_image_size(r, ctx); | |
| 484 | |
| 485 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
| 486 | |
| 487 if (conf->filter == NGX_HTTP_IMAGE_SIZE) { | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
488 return ngx_http_image_json(r, rc == NGX_OK ? ctx : NULL); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
489 } |
| 2788 | 490 |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
491 ctx->max_width = ngx_http_image_filter_get_value(r, conf->wcv, conf->width); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
492 if (ctx->max_width == 0) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
493 return NULL; |
| 2788 | 494 } |
| 495 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
496 ctx->max_height = ngx_http_image_filter_get_value(r, conf->hcv, |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
497 conf->height); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
498 if (ctx->max_height == 0) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
499 return NULL; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
500 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
501 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
502 if (rc == NGX_OK |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
503 && ctx->width <= ctx->max_width |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
504 && ctx->height <= ctx->max_height) |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
505 { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
506 return ngx_http_image_asis(r, ctx); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
507 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
508 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
509 return ngx_http_image_resize(r, ctx); |
| 2788 | 510 } |
| 511 | |
| 512 | |
| 513 static ngx_buf_t * | |
| 514 ngx_http_image_json(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
| 515 { | |
| 516 size_t len; | |
| 517 ngx_buf_t *b; | |
| 518 | |
| 519 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 520 if (b == NULL) { | |
| 521 return NULL; | |
| 522 } | |
| 523 | |
| 524 b->memory = 1; | |
| 525 b->last_buf = 1; | |
| 526 | |
| 527 ngx_http_clean_header(r); | |
| 528 | |
| 529 r->headers_out.status = NGX_HTTP_OK; | |
| 530 r->headers_out.content_type.len = sizeof("text/plain") - 1; | |
| 531 r->headers_out.content_type.data = (u_char *) "text/plain"; | |
|
2882
896db5a09bd2
reset content_type hash value, this fixes a bug when XSLT responses
Igor Sysoev <igor@sysoev.ru>
parents:
2848
diff
changeset
|
532 r->headers_out.content_type_lowcase = NULL; |
| 2788 | 533 |
| 534 if (ctx == NULL) { | |
| 535 b->pos = (u_char *) "{}" CRLF; | |
| 536 b->last = b->pos + sizeof("{}" CRLF) - 1; | |
| 537 | |
| 538 ngx_http_image_length(r, b); | |
| 539 | |
| 540 return b; | |
| 541 } | |
| 542 | |
| 543 len = sizeof("{ \"img\" : " | |
| 544 "{ \"width\": , \"height\": , \"type\": \"jpeg\" } }" CRLF) - 1 | |
| 545 + 2 * NGX_SIZE_T_LEN; | |
| 546 | |
| 547 b->pos = ngx_pnalloc(r->pool, len); | |
| 548 if (b->pos == NULL) { | |
| 549 return NULL; | |
| 550 } | |
| 551 | |
| 552 b->last = ngx_sprintf(b->pos, | |
| 553 "{ \"img\" : " | |
| 554 "{ \"width\": %uz," | |
| 555 " \"height\": %uz," | |
| 556 " \"type\": \"%s\" } }" CRLF, | |
| 557 ctx->width, ctx->height, | |
| 558 ngx_http_image_types[ctx->type - 1].data + 6); | |
| 559 | |
| 560 ngx_http_image_length(r, b); | |
| 561 | |
| 562 return b; | |
| 563 } | |
| 564 | |
| 565 | |
| 566 static ngx_buf_t * | |
| 567 ngx_http_image_asis(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
| 568 { | |
| 569 ngx_buf_t *b; | |
| 570 | |
| 571 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 572 if (b == NULL) { | |
| 573 return NULL; | |
| 574 } | |
| 575 | |
| 576 b->pos = ctx->image; | |
| 577 b->last = ctx->last; | |
| 578 b->memory = 1; | |
| 579 b->last_buf = 1; | |
| 580 | |
| 581 ngx_http_image_length(r, b); | |
| 582 | |
| 583 return b; | |
| 584 } | |
| 585 | |
| 586 | |
| 587 static void | |
| 588 ngx_http_image_length(ngx_http_request_t *r, ngx_buf_t *b) | |
| 589 { | |
| 590 r->headers_out.content_length_n = b->last - b->pos; | |
| 591 | |
| 592 if (r->headers_out.content_length) { | |
| 593 r->headers_out.content_length->hash = 0; | |
| 594 } | |
| 595 | |
| 596 r->headers_out.content_length = NULL; | |
| 597 } | |
| 598 | |
| 599 | |
| 600 static ngx_int_t | |
| 601 ngx_http_image_size(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
| 602 { | |
| 603 u_char *p, *last; | |
| 604 ngx_uint_t width, height; | |
| 605 | |
| 606 p = ctx->image; | |
| 607 | |
| 608 switch (ctx->type) { | |
| 609 | |
| 610 case NGX_HTTP_IMAGE_JPEG: | |
| 611 | |
| 612 p += 2; | |
| 613 last = ctx->image + ctx->length - 10; | |
| 614 | |
| 615 while (p < last) { | |
| 616 | |
| 617 if (p[0] == 0xff && p[1] != 0xff) { | |
| 618 | |
| 619 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3393 | 620 "JPEG: %02xd %02xd", p[0], p[1]); |
| 2788 | 621 |
| 622 p++; | |
| 623 | |
| 624 if (*p == 0xc0 || *p == 0xc1 || *p == 0xc2 || *p == 0xc3 | |
| 625 || *p == 0xc9 || *p == 0xca || *p == 0xcb) | |
| 626 { | |
| 627 goto found; | |
| 628 } | |
| 629 | |
| 630 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 631 "JPEG: %02xd %02xd", p[1], p[2]); | |
| 632 | |
| 633 p += p[1] * 256 + p[2]; | |
| 634 | |
| 635 continue; | |
| 636 } | |
| 637 | |
| 638 p++; | |
| 639 } | |
| 640 | |
| 641 return NGX_DECLINED; | |
| 642 | |
| 643 found: | |
| 644 | |
| 645 width = p[6] * 256 + p[7]; | |
| 646 height = p[4] * 256 + p[5]; | |
| 647 | |
| 648 break; | |
| 649 | |
| 650 case NGX_HTTP_IMAGE_GIF: | |
| 651 | |
| 652 if (ctx->length < 10) { | |
| 653 return NGX_DECLINED; | |
| 654 } | |
| 655 | |
| 656 width = p[7] * 256 + p[6]; | |
| 657 height = p[9] * 256 + p[8]; | |
| 658 | |
| 659 break; | |
| 660 | |
| 661 case NGX_HTTP_IMAGE_PNG: | |
| 662 | |
| 663 if (ctx->length < 24) { | |
| 664 return NGX_DECLINED; | |
| 665 } | |
| 666 | |
| 667 width = p[18] * 256 + p[19]; | |
| 668 height = p[22] * 256 + p[23]; | |
| 669 | |
| 670 break; | |
| 671 | |
| 672 default: | |
| 673 | |
| 674 return NGX_DECLINED; | |
| 675 } | |
| 676 | |
| 677 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 678 "image size: %d x %d", width, height); | |
| 679 | |
| 680 ctx->width = width; | |
| 681 ctx->height = height; | |
| 682 | |
| 683 return NGX_OK; | |
| 684 } | |
| 685 | |
| 686 | |
| 687 static ngx_buf_t * | |
| 688 ngx_http_image_resize(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
| 689 { | |
| 3134 | 690 int sx, sy, dx, dy, ox, oy, size, |
| 691 colors, palette, transparent, | |
| 692 red, green, blue; | |
| 2788 | 693 u_char *out; |
| 694 ngx_buf_t *b; | |
| 695 ngx_uint_t resize; | |
| 696 gdImagePtr src, dst; | |
| 697 ngx_pool_cleanup_t *cln; | |
| 698 ngx_http_image_filter_conf_t *conf; | |
| 699 | |
| 700 src = ngx_http_image_source(r, ctx); | |
| 701 | |
| 702 if (src == NULL) { | |
| 703 return NULL; | |
| 704 } | |
| 705 | |
| 706 sx = gdImageSX(src); | |
| 707 sy = gdImageSY(src); | |
| 708 | |
| 709 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); | |
| 710 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
711 if ((ngx_uint_t) sx <= ctx->max_width |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
712 && (ngx_uint_t) sy <= ctx->max_height) |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
713 { |
| 2788 | 714 gdImageDestroy(src); |
| 715 return ngx_http_image_asis(r, ctx); | |
| 716 } | |
| 717 | |
| 718 colors = gdImageColorsTotal(src); | |
| 3134 | 719 |
| 720 if (colors && conf->transparency) { | |
| 721 transparent = gdImageGetTransparent(src); | |
| 722 | |
| 723 if (transparent != -1) { | |
| 724 palette = colors; | |
| 725 red = gdImageRed(src, transparent); | |
| 726 green = gdImageGreen(src, transparent); | |
| 727 blue = gdImageBlue(src, transparent); | |
| 2788 | 728 |
| 3134 | 729 goto transparent; |
| 730 } | |
| 731 } | |
| 3117 | 732 |
| 3134 | 733 palette = 0; |
| 734 transparent = -1; | |
| 735 red = 0; | |
| 736 green = 0; | |
| 737 blue = 0; | |
| 738 | |
| 739 transparent: | |
| 740 | |
| 741 gdImageColorTransparent(src, -1); | |
| 3117 | 742 |
| 2788 | 743 dx = sx; |
| 744 dy = sy; | |
| 745 | |
| 746 if (conf->filter == NGX_HTTP_IMAGE_RESIZE) { | |
| 747 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
748 if ((ngx_uint_t) dx > ctx->max_width) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
749 dy = dy * ctx->max_width / dx; |
| 2788 | 750 dy = dy ? dy : 1; |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
751 dx = ctx->max_width; |
| 2788 | 752 } |
| 753 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
754 if ((ngx_uint_t) dy > ctx->max_height) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
755 dx = dx * ctx->max_height / dy; |
| 2788 | 756 dx = dx ? dx : 1; |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
757 dy = ctx->max_height; |
| 2788 | 758 } |
| 759 | |
| 760 resize = 1; | |
| 761 | |
| 762 } else { /* NGX_HTTP_IMAGE_CROP */ | |
| 763 | |
| 764 resize = 0; | |
| 765 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
766 if ((ngx_uint_t) (dx * 100 / dy) |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
767 < ctx->max_width * 100 / ctx->max_height) |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
768 { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
769 if ((ngx_uint_t) dx > ctx->max_width) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
770 dy = dy * ctx->max_width / dx; |
| 2788 | 771 dy = dy ? dy : 1; |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
772 dx = ctx->max_width; |
| 2788 | 773 resize = 1; |
| 774 } | |
| 775 | |
| 776 } else { | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
777 if ((ngx_uint_t) dy > ctx->max_height) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
778 dx = dx * ctx->max_height / dy; |
| 2788 | 779 dx = dx ? dx : 1; |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
780 dy = ctx->max_height; |
| 2788 | 781 resize = 1; |
| 782 } | |
| 783 } | |
| 784 } | |
| 785 | |
| 786 if (resize) { | |
| 3134 | 787 dst = ngx_http_image_new(r, dx, dy, palette); |
| 2788 | 788 if (dst == NULL) { |
| 789 gdImageDestroy(src); | |
| 790 return NULL; | |
| 791 } | |
| 792 | |
|
3133
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
793 if (colors == 0) { |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
794 gdImageSaveAlpha(dst, 1); |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
795 gdImageAlphaBlending(dst, 0); |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
796 } |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
797 |
| 2788 | 798 gdImageCopyResampled(dst, src, 0, 0, 0, 0, dx, dy, sx, sy); |
| 799 | |
| 3134 | 800 if (colors) { |
| 801 gdImageTrueColorToPalette(dst, 1, 256); | |
| 802 } | |
| 803 | |
| 2788 | 804 gdImageDestroy(src); |
| 805 | |
| 806 } else { | |
| 807 dst = src; | |
| 808 } | |
| 809 | |
| 810 if (conf->filter == NGX_HTTP_IMAGE_CROP) { | |
| 811 | |
| 812 src = dst; | |
| 813 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
814 if ((ngx_uint_t) dx > ctx->max_width) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
815 ox = dx - ctx->max_width; |
| 2788 | 816 |
| 817 } else { | |
| 818 ox = 0; | |
| 819 } | |
| 820 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
821 if ((ngx_uint_t) dy > ctx->max_height) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
822 oy = dy - ctx->max_height; |
| 2788 | 823 |
| 824 } else { | |
| 825 oy = 0; | |
| 826 } | |
| 827 | |
| 828 if (ox || oy) { | |
| 829 | |
| 830 dst = ngx_http_image_new(r, dx - ox, dy - oy, colors); | |
| 831 | |
| 832 if (dst == NULL) { | |
| 833 gdImageDestroy(src); | |
| 834 return NULL; | |
| 835 } | |
| 836 | |
| 837 ox /= 2; | |
| 838 oy /= 2; | |
| 839 | |
| 840 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 841 "image crop: %d x %d @ %d x %d", | |
| 842 dx, dy, ox, oy); | |
| 843 | |
|
3133
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
844 if (colors == 0) { |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
845 gdImageSaveAlpha(dst, 1); |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
846 gdImageAlphaBlending(dst, 0); |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
847 } |
|
28a6aa24b453
fix alpha-channel transparency in PNG
Igor Sysoev <igor@sysoev.ru>
parents:
3117
diff
changeset
|
848 |
| 2788 | 849 gdImageCopy(dst, src, 0, 0, ox, oy, dx - ox, dy - oy); |
| 850 | |
| 3134 | 851 if (colors) { |
| 852 gdImageTrueColorToPalette(dst, 1, 256); | |
| 853 } | |
| 854 | |
| 2788 | 855 gdImageDestroy(src); |
| 856 } | |
| 857 } | |
| 858 | |
| 3117 | 859 if (transparent != -1 && colors) { |
| 860 gdImageColorTransparent(dst, gdImageColorExact(dst, red, green, blue)); | |
| 861 } | |
| 2788 | 862 |
| 863 out = ngx_http_image_out(r, ctx->type, dst, &size); | |
| 864 | |
| 865 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 866 "image: %d x %d %d", sx, sy, colors); | |
| 867 | |
| 868 gdImageDestroy(dst); | |
| 869 ngx_pfree(r->pool, ctx->image); | |
| 870 | |
| 871 if (out == NULL) { | |
| 872 return NULL; | |
| 873 } | |
| 874 | |
| 875 cln = ngx_pool_cleanup_add(r->pool, 0); | |
| 876 if (cln == NULL) { | |
| 877 gdFree(out); | |
| 878 return NULL; | |
| 879 } | |
| 880 | |
| 881 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)); | |
| 882 if (b == NULL) { | |
| 883 gdFree(out); | |
| 884 return NULL; | |
| 885 } | |
| 886 | |
| 887 cln->handler = ngx_http_image_cleanup; | |
| 888 cln->data = out; | |
| 889 | |
| 890 b->pos = out; | |
| 891 b->last = out + size; | |
| 892 b->memory = 1; | |
| 893 b->last_buf = 1; | |
| 894 | |
| 895 ngx_http_image_length(r, b); | |
| 896 | |
| 897 return b; | |
| 898 } | |
| 899 | |
| 900 | |
| 901 static gdImagePtr | |
| 902 ngx_http_image_source(ngx_http_request_t *r, ngx_http_image_filter_ctx_t *ctx) | |
| 903 { | |
| 904 char *failed; | |
| 905 gdImagePtr img; | |
| 906 | |
| 907 img = NULL; | |
| 908 | |
| 909 switch (ctx->type) { | |
| 910 | |
| 911 case NGX_HTTP_IMAGE_JPEG: | |
| 912 img = gdImageCreateFromJpegPtr(ctx->length, ctx->image); | |
| 913 failed = "gdImageCreateFromJpegPtr() failed"; | |
| 914 break; | |
| 915 | |
| 916 case NGX_HTTP_IMAGE_GIF: | |
| 917 img = gdImageCreateFromGifPtr(ctx->length, ctx->image); | |
| 918 failed = "gdImageCreateFromGifPtr() failed"; | |
| 919 break; | |
| 920 | |
| 921 case NGX_HTTP_IMAGE_PNG: | |
| 922 img = gdImageCreateFromPngPtr(ctx->length, ctx->image); | |
| 923 failed = "gdImageCreateFromPngPtr() failed"; | |
| 924 break; | |
| 925 | |
| 926 default: | |
| 927 failed = "unknown image type"; | |
| 928 break; | |
| 929 } | |
| 930 | |
| 931 if (img == NULL) { | |
| 932 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, failed); | |
| 933 } | |
| 934 | |
| 935 return img; | |
| 936 } | |
| 937 | |
| 938 | |
| 939 static gdImagePtr | |
| 940 ngx_http_image_new(ngx_http_request_t *r, int w, int h, int colors) | |
| 941 { | |
| 942 gdImagePtr img; | |
| 943 | |
| 944 if (colors == 0) { | |
| 945 img = gdImageCreateTrueColor(w, h); | |
| 946 | |
| 947 if (img == NULL) { | |
| 948 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 949 "gdImageCreateTrueColor() failed"); | |
| 950 return NULL; | |
| 951 } | |
| 952 | |
| 953 } else { | |
| 954 img = gdImageCreate(w, h); | |
| 955 | |
| 956 if (img == NULL) { | |
| 957 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 958 "gdImageCreate() failed"); | |
| 959 return NULL; | |
| 960 } | |
| 961 } | |
| 962 | |
| 963 return img; | |
| 964 } | |
| 965 | |
| 966 | |
| 967 static u_char * | |
| 968 ngx_http_image_out(ngx_http_request_t *r, ngx_uint_t type, gdImagePtr img, | |
| 969 int *size) | |
| 970 { | |
| 2848 | 971 char *failed; |
| 972 u_char *out; | |
| 973 ngx_http_image_filter_conf_t *conf; | |
| 2788 | 974 |
| 975 out = NULL; | |
| 976 | |
| 977 switch (type) { | |
| 978 | |
| 979 case NGX_HTTP_IMAGE_JPEG: | |
| 2848 | 980 conf = ngx_http_get_module_loc_conf(r, ngx_http_image_filter_module); |
| 981 out = gdImageJpegPtr(img, size, conf->jpeg_quality); | |
| 2788 | 982 failed = "gdImageJpegPtr() failed"; |
| 983 break; | |
| 984 | |
| 985 case NGX_HTTP_IMAGE_GIF: | |
| 986 out = gdImageGifPtr(img, size); | |
| 987 failed = "gdImageGifPtr() failed"; | |
| 988 break; | |
| 989 | |
| 990 case NGX_HTTP_IMAGE_PNG: | |
| 991 out = gdImagePngPtr(img, size); | |
| 992 failed = "gdImagePngPtr() failed"; | |
| 993 break; | |
| 994 | |
| 995 default: | |
| 996 failed = "unknown image type"; | |
| 997 break; | |
| 998 } | |
| 999 | |
| 1000 if (out == NULL) { | |
| 1001 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, failed); | |
| 1002 } | |
| 1003 | |
| 1004 return out; | |
| 1005 } | |
| 1006 | |
| 1007 | |
| 1008 static void | |
| 1009 ngx_http_image_cleanup(void *data) | |
| 1010 { | |
| 1011 gdFree(data); | |
| 1012 } | |
| 1013 | |
| 1014 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1015 static ngx_uint_t |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1016 ngx_http_image_filter_get_value(ngx_http_request_t *r, |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1017 ngx_http_complex_value_t *cv, ngx_uint_t v) |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1018 { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1019 ngx_str_t val; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1020 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1021 if (cv == NULL) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1022 return v; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1023 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1024 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1025 if (ngx_http_complex_value(r, cv, &val) != NGX_OK) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1026 return 0; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1027 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1028 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1029 return ngx_http_image_filter_value(&val); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1030 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1031 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1032 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1033 static ngx_uint_t |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1034 ngx_http_image_filter_value(ngx_str_t *value) |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1035 { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1036 ngx_int_t n; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1037 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1038 if (value->len == 1 && value->data[0] == '-') { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1039 return (ngx_uint_t) -1; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1040 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1041 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1042 n = ngx_atoi(value->data, value->len); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1043 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1044 if (n > 0) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1045 return (ngx_uint_t) n; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1046 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1047 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1048 return 0; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1049 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1050 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1051 |
| 2788 | 1052 static void * |
| 1053 ngx_http_image_filter_create_conf(ngx_conf_t *cf) | |
| 1054 { | |
| 1055 ngx_http_image_filter_conf_t *conf; | |
| 1056 | |
| 1057 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_image_filter_conf_t)); | |
| 1058 if (conf == NULL) { | |
|
2912
c7d57b539248
return NULL instead of NGX_CONF_ERROR on a create conf failure
Igor Sysoev <igor@sysoev.ru>
parents:
2882
diff
changeset
|
1059 return NULL; |
| 2788 | 1060 } |
| 1061 | |
| 1062 conf->filter = NGX_CONF_UNSET_UINT; | |
| 2848 | 1063 conf->jpeg_quality = NGX_CONF_UNSET; |
| 3134 | 1064 conf->transparency = NGX_CONF_UNSET; |
| 2788 | 1065 conf->buffer_size = NGX_CONF_UNSET_SIZE; |
| 1066 | |
| 1067 return conf; | |
| 1068 } | |
| 1069 | |
| 1070 | |
| 1071 static char * | |
| 1072 ngx_http_image_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 1073 { | |
| 1074 ngx_http_image_filter_conf_t *prev = parent; | |
| 1075 ngx_http_image_filter_conf_t *conf = child; | |
| 1076 | |
| 1077 if (conf->filter == NGX_CONF_UNSET_UINT) { | |
| 1078 | |
| 1079 if (prev->filter == NGX_CONF_UNSET_UINT) { | |
| 1080 conf->filter = NGX_HTTP_IMAGE_OFF; | |
| 1081 | |
| 1082 } else { | |
| 1083 conf->filter = prev->filter; | |
| 1084 conf->width = prev->width; | |
| 1085 conf->height = prev->height; | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1086 conf->wcv = prev->wcv; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1087 conf->hcv = prev->hcv; |
| 2788 | 1088 } |
| 1089 } | |
| 1090 | |
| 2848 | 1091 /* 75 is libjpeg default quality */ |
| 1092 ngx_conf_merge_value(conf->jpeg_quality, prev->jpeg_quality, 75); | |
| 1093 | |
| 3134 | 1094 ngx_conf_merge_value(conf->transparency, prev->transparency, 1); |
| 1095 | |
| 2788 | 1096 ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size, |
| 1097 1 * 1024 * 1024); | |
| 1098 | |
| 1099 return NGX_CONF_OK; | |
| 1100 } | |
| 1101 | |
| 1102 | |
| 1103 static char * | |
| 1104 ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 1105 { | |
| 1106 ngx_http_image_filter_conf_t *imcf = conf; | |
| 1107 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1108 ngx_str_t *value; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1109 ngx_int_t n; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1110 ngx_uint_t i; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1111 ngx_http_complex_value_t cv; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1112 ngx_http_compile_complex_value_t ccv; |
| 2788 | 1113 |
| 1114 value = cf->args->elts; | |
| 1115 | |
| 1116 i = 1; | |
| 1117 | |
| 1118 if (cf->args->nelts == 2) { | |
| 1119 if (ngx_strcmp(value[i].data, "off") == 0) { | |
| 1120 imcf->filter = NGX_HTTP_IMAGE_OFF; | |
| 1121 | |
| 1122 } else if (ngx_strcmp(value[i].data, "test") == 0) { | |
| 1123 imcf->filter = NGX_HTTP_IMAGE_TEST; | |
| 1124 | |
| 1125 } else if (ngx_strcmp(value[i].data, "size") == 0) { | |
| 1126 imcf->filter = NGX_HTTP_IMAGE_SIZE; | |
| 1127 | |
| 1128 } else { | |
| 1129 goto failed; | |
| 1130 } | |
| 1131 | |
| 1132 return NGX_CONF_OK; | |
| 1133 } | |
| 1134 | |
| 1135 if (ngx_strcmp(value[i].data, "resize") == 0) { | |
| 1136 imcf->filter = NGX_HTTP_IMAGE_RESIZE; | |
| 1137 | |
| 1138 } else if (ngx_strcmp(value[i].data, "crop") == 0) { | |
| 1139 imcf->filter = NGX_HTTP_IMAGE_CROP; | |
| 1140 | |
| 1141 } else { | |
| 1142 goto failed; | |
| 1143 } | |
| 1144 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1145 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1146 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1147 ccv.cf = cf; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1148 ccv.value = &value[++i]; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1149 ccv.complex_value = &cv; |
| 2788 | 1150 |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1151 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1152 return NGX_CONF_ERROR; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1153 } |
| 2788 | 1154 |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1155 if (cv.lengths == NULL) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1156 n = ngx_http_image_filter_value(&value[i]); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1157 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1158 if (n == 0) { |
| 2788 | 1159 goto failed; |
| 1160 } | |
| 1161 | |
| 1162 imcf->width = (ngx_uint_t) n; | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1163 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1164 } else { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1165 imcf->wcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1166 if (imcf->wcv == NULL) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1167 return NGX_CONF_ERROR; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1168 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1169 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1170 *imcf->wcv = cv; |
| 2788 | 1171 } |
| 1172 | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1173 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1174 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1175 ccv.cf = cf; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1176 ccv.value = &value[++i]; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1177 ccv.complex_value = &cv; |
| 2788 | 1178 |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1179 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1180 return NGX_CONF_ERROR; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1181 } |
| 2788 | 1182 |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1183 if (cv.lengths == NULL) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1184 n = ngx_http_image_filter_value(&value[i]); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1185 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1186 if (n == 0) { |
| 2788 | 1187 goto failed; |
| 1188 } | |
| 1189 | |
| 1190 imcf->height = (ngx_uint_t) n; | |
|
2998
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1191 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1192 } else { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1193 imcf->hcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t)); |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1194 if (imcf->hcv == NULL) { |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1195 return NGX_CONF_ERROR; |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1196 } |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1197 |
|
fa8503fd3647
variables support in image_filter
Igor Sysoev <igor@sysoev.ru>
parents:
2918
diff
changeset
|
1198 *imcf->hcv = cv; |
| 2788 | 1199 } |
| 1200 | |
| 1201 return NGX_CONF_OK; | |
| 1202 | |
| 1203 failed: | |
| 1204 | |
| 1205 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", | |
| 1206 &value[i]); | |
| 1207 | |
| 1208 return NGX_CONF_ERROR; | |
| 1209 } | |
| 1210 | |
| 1211 | |
| 1212 static ngx_int_t | |
| 1213 ngx_http_image_filter_init(ngx_conf_t *cf) | |
| 1214 { | |
| 1215 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 1216 ngx_http_top_header_filter = ngx_http_image_header_filter; | |
| 1217 | |
| 1218 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
| 1219 ngx_http_top_body_filter = ngx_http_image_body_filter; | |
| 1220 | |
| 1221 return NGX_OK; | |
| 1222 } |