|
0
|
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>
|
|
|
10
|
|
|
11 #include <zlib.h>
|
|
|
12
|
|
|
13
|
|
|
14 typedef struct {
|
|
|
15 ngx_flag_t enable;
|
|
|
16 ngx_flag_t no_buffer;
|
|
|
17
|
|
2
|
18 ngx_array_t *types; /* array of ngx_http_gzip_type_t */
|
|
|
19
|
|
0
|
20 ngx_bufs_t bufs;
|
|
|
21
|
|
|
22 ngx_uint_t http_version;
|
|
|
23 ngx_uint_t proxied;
|
|
|
24
|
|
|
25 int level;
|
|
|
26 size_t wbits;
|
|
|
27 size_t memlevel;
|
|
|
28 ssize_t min_length;
|
|
|
29 } ngx_http_gzip_conf_t;
|
|
|
30
|
|
|
31
|
|
2
|
32 typedef struct {
|
|
|
33 ngx_str_t name;
|
|
|
34 ngx_uint_t enable;
|
|
|
35 } ngx_http_gzip_type_t;
|
|
|
36
|
|
|
37
|
|
0
|
38 #define NGX_HTTP_GZIP_PROXIED_OFF 0x0002
|
|
|
39 #define NGX_HTTP_GZIP_PROXIED_EXPIRED 0x0004
|
|
|
40 #define NGX_HTTP_GZIP_PROXIED_NO_CACHE 0x0008
|
|
|
41 #define NGX_HTTP_GZIP_PROXIED_NO_STORE 0x0010
|
|
|
42 #define NGX_HTTP_GZIP_PROXIED_PRIVATE 0x0020
|
|
|
43 #define NGX_HTTP_GZIP_PROXIED_NO_LM 0x0040
|
|
|
44 #define NGX_HTTP_GZIP_PROXIED_NO_ETAG 0x0080
|
|
|
45 #define NGX_HTTP_GZIP_PROXIED_AUTH 0x0100
|
|
|
46 #define NGX_HTTP_GZIP_PROXIED_ANY 0x0200
|
|
|
47
|
|
|
48
|
|
|
49 typedef struct {
|
|
|
50 ngx_chain_t *in;
|
|
|
51 ngx_chain_t *free;
|
|
|
52 ngx_chain_t *busy;
|
|
|
53 ngx_chain_t *out;
|
|
|
54 ngx_chain_t **last_out;
|
|
|
55 ngx_buf_t *in_buf;
|
|
|
56 ngx_buf_t *out_buf;
|
|
|
57 ngx_int_t bufs;
|
|
|
58
|
|
|
59 off_t length;
|
|
|
60
|
|
|
61 void *preallocated;
|
|
|
62 char *free_mem;
|
|
|
63 ngx_uint_t allocated;
|
|
|
64
|
|
|
65 unsigned flush:4;
|
|
|
66 unsigned redo:1;
|
|
|
67 unsigned done:1;
|
|
|
68
|
|
|
69 size_t zin;
|
|
|
70 size_t zout;
|
|
|
71
|
|
|
72 uint32_t crc32;
|
|
|
73 z_stream zstream;
|
|
|
74 ngx_http_request_t *request;
|
|
|
75 } ngx_http_gzip_ctx_t;
|
|
|
76
|
|
|
77
|
|
|
78 static ngx_int_t ngx_http_gzip_proxied(ngx_http_request_t *r,
|
|
|
79 ngx_http_gzip_conf_t *conf);
|
|
|
80 static void *ngx_http_gzip_filter_alloc(void *opaque, u_int items,
|
|
|
81 u_int size);
|
|
|
82 static void ngx_http_gzip_filter_free(void *opaque, void *address);
|
|
28
|
83 static void ngx_http_gzip_error(ngx_http_gzip_ctx_t *ctx);
|
|
0
|
84
|
|
|
85 static u_char *ngx_http_gzip_log_ratio(ngx_http_request_t *r, u_char *buf,
|
|
28
|
86 ngx_http_log_op_t *op);
|
|
0
|
87
|
|
28
|
88 static ngx_int_t ngx_http_gzip_add_log_formats(ngx_conf_t *cf);
|
|
|
89
|
|
0
|
90 static ngx_int_t ngx_http_gzip_filter_init(ngx_cycle_t *cycle);
|
|
|
91 static void *ngx_http_gzip_create_conf(ngx_conf_t *cf);
|
|
|
92 static char *ngx_http_gzip_merge_conf(ngx_conf_t *cf,
|
|
|
93 void *parent, void *child);
|
|
2
|
94 static char *ngx_http_gzip_set_types(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
95 void *conf);
|
|
0
|
96 static char *ngx_http_gzip_set_window(ngx_conf_t *cf, void *post, void *data);
|
|
|
97 static char *ngx_http_gzip_set_hash(ngx_conf_t *cf, void *post, void *data);
|
|
|
98
|
|
|
99
|
|
|
100 static ngx_conf_num_bounds_t ngx_http_gzip_comp_level_bounds = {
|
|
|
101 ngx_conf_check_num_bounds, 1, 9
|
|
|
102 };
|
|
|
103
|
|
|
104 static ngx_conf_post_handler_pt ngx_http_gzip_set_window_p =
|
|
|
105 ngx_http_gzip_set_window;
|
|
|
106 static ngx_conf_post_handler_pt ngx_http_gzip_set_hash_p =
|
|
|
107 ngx_http_gzip_set_hash;
|
|
|
108
|
|
|
109
|
|
|
110
|
|
|
111 static ngx_conf_enum_t ngx_http_gzip_http_version[] = {
|
|
|
112 { ngx_string("1.0"), NGX_HTTP_VERSION_10 },
|
|
|
113 { ngx_string("1.1"), NGX_HTTP_VERSION_11 },
|
|
|
114 { ngx_null_string, 0 }
|
|
|
115 };
|
|
|
116
|
|
|
117
|
|
|
118 static ngx_conf_bitmask_t ngx_http_gzip_proxied_mask[] = {
|
|
|
119 { ngx_string("off"), NGX_HTTP_GZIP_PROXIED_OFF },
|
|
|
120 { ngx_string("expired"), NGX_HTTP_GZIP_PROXIED_EXPIRED },
|
|
|
121 { ngx_string("no-cache"), NGX_HTTP_GZIP_PROXIED_NO_CACHE },
|
|
|
122 { ngx_string("no-store"), NGX_HTTP_GZIP_PROXIED_NO_STORE },
|
|
|
123 { ngx_string("private"), NGX_HTTP_GZIP_PROXIED_PRIVATE },
|
|
|
124 { ngx_string("no_last_modified"), NGX_HTTP_GZIP_PROXIED_NO_LM },
|
|
|
125 { ngx_string("no_etag"), NGX_HTTP_GZIP_PROXIED_NO_ETAG },
|
|
|
126 { ngx_string("auth"), NGX_HTTP_GZIP_PROXIED_AUTH },
|
|
|
127 { ngx_string("any"), NGX_HTTP_GZIP_PROXIED_ANY },
|
|
|
128 { ngx_null_string, 0 }
|
|
|
129 };
|
|
|
130
|
|
|
131
|
|
|
132 static ngx_command_t ngx_http_gzip_filter_commands[] = {
|
|
|
133
|
|
|
134 { ngx_string("gzip"),
|
|
34
|
135 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
|
|
|
136 |NGX_CONF_FLAG,
|
|
0
|
137 ngx_conf_set_flag_slot,
|
|
|
138 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
139 offsetof(ngx_http_gzip_conf_t, enable),
|
|
|
140 NULL },
|
|
|
141
|
|
|
142 { ngx_string("gzip_buffers"),
|
|
|
143 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
|
|
|
144 ngx_conf_set_bufs_slot,
|
|
|
145 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
146 offsetof(ngx_http_gzip_conf_t, bufs),
|
|
|
147 NULL },
|
|
|
148
|
|
2
|
149 { ngx_string("gzip_types"),
|
|
|
150 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
|
|
|
151 ngx_http_gzip_set_types,
|
|
|
152 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
153 0,
|
|
|
154 NULL },
|
|
|
155
|
|
0
|
156 { ngx_string("gzip_comp_level"),
|
|
|
157 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
158 ngx_conf_set_num_slot,
|
|
|
159 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
160 offsetof(ngx_http_gzip_conf_t, level),
|
|
|
161 &ngx_http_gzip_comp_level_bounds },
|
|
|
162
|
|
|
163 { ngx_string("gzip_window"),
|
|
|
164 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
165 ngx_conf_set_size_slot,
|
|
|
166 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
167 offsetof(ngx_http_gzip_conf_t, wbits),
|
|
|
168 &ngx_http_gzip_set_window_p },
|
|
|
169
|
|
|
170 { ngx_string("gzip_hash"),
|
|
|
171 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
172 ngx_conf_set_size_slot,
|
|
|
173 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
174 offsetof(ngx_http_gzip_conf_t, memlevel),
|
|
|
175 &ngx_http_gzip_set_hash_p },
|
|
|
176
|
|
|
177 { ngx_string("gzip_no_buffer"),
|
|
|
178 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
|
|
|
179 ngx_conf_set_flag_slot,
|
|
|
180 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
181 offsetof(ngx_http_gzip_conf_t, no_buffer),
|
|
|
182 NULL },
|
|
|
183
|
|
|
184 { ngx_string("gzip_http_version"),
|
|
|
185 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
|
|
|
186 ngx_conf_set_enum_slot,
|
|
|
187 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
188 offsetof(ngx_http_gzip_conf_t, http_version),
|
|
|
189 &ngx_http_gzip_http_version },
|
|
|
190
|
|
|
191 { ngx_string("gzip_proxied"),
|
|
|
192 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
|
|
|
193 ngx_conf_set_bitmask_slot,
|
|
|
194 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
195 offsetof(ngx_http_gzip_conf_t, proxied),
|
|
|
196 &ngx_http_gzip_proxied_mask },
|
|
|
197
|
|
|
198 { ngx_string("gzip_min_length"),
|
|
|
199 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
200 ngx_conf_set_size_slot,
|
|
|
201 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
202 offsetof(ngx_http_gzip_conf_t, min_length),
|
|
|
203 NULL },
|
|
|
204
|
|
|
205 ngx_null_command
|
|
|
206 };
|
|
|
207
|
|
|
208
|
|
|
209 static ngx_http_module_t ngx_http_gzip_filter_module_ctx = {
|
|
28
|
210 ngx_http_gzip_add_log_formats, /* pre conf */
|
|
0
|
211
|
|
|
212 NULL, /* create main configuration */
|
|
|
213 NULL, /* init main configuration */
|
|
|
214
|
|
|
215 NULL, /* create server configuration */
|
|
|
216 NULL, /* merge server configuration */
|
|
|
217
|
|
|
218 ngx_http_gzip_create_conf, /* create location configuration */
|
|
|
219 ngx_http_gzip_merge_conf, /* merge location configuration */
|
|
|
220 };
|
|
|
221
|
|
|
222
|
|
|
223 ngx_module_t ngx_http_gzip_filter_module = {
|
|
|
224 NGX_MODULE,
|
|
|
225 &ngx_http_gzip_filter_module_ctx, /* module context */
|
|
|
226 ngx_http_gzip_filter_commands, /* module directives */
|
|
|
227 NGX_HTTP_MODULE, /* module type */
|
|
|
228 ngx_http_gzip_filter_init, /* init module */
|
|
2
|
229 NULL /* init process */
|
|
0
|
230 };
|
|
|
231
|
|
|
232
|
|
|
233 static ngx_http_log_op_name_t ngx_http_gzip_log_fmt_ops[] = {
|
|
28
|
234 { ngx_string("gzip_ratio"), NGX_INT32_LEN + 3,
|
|
|
235 NULL, NULL, ngx_http_gzip_log_ratio },
|
|
|
236 { ngx_null_string, 0, NULL, NULL, NULL }
|
|
0
|
237 };
|
|
|
238
|
|
|
239
|
|
|
240
|
|
|
241 static u_char gzheader[10] = { 0x1f, 0x8b, Z_DEFLATED, 0, 0, 0, 0, 0, 0, 3 };
|
|
|
242
|
|
28
|
243 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
|
|
0
|
244
|
|
|
245 struct gztrailer {
|
|
|
246 uint32_t crc32;
|
|
|
247 uint32_t zlen;
|
|
|
248 };
|
|
|
249
|
|
28
|
250 #else /* NGX_HAVE_BIG_ENDIAN || !NGX_HAVE_NONALIGNED */
|
|
0
|
251
|
|
|
252 struct gztrailer {
|
|
|
253 u_char crc32[4];
|
|
|
254 u_char zlen[4];
|
|
|
255 };
|
|
|
256
|
|
|
257 #endif
|
|
|
258
|
|
|
259
|
|
|
260 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
|
|
|
261 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
|
|
|
262
|
|
|
263
|
|
|
264 static ngx_int_t ngx_http_gzip_header_filter(ngx_http_request_t *r)
|
|
|
265 {
|
|
2
|
266 ngx_uint_t i, found;
|
|
0
|
267 ngx_http_gzip_ctx_t *ctx;
|
|
|
268 ngx_http_gzip_conf_t *conf;
|
|
2
|
269 ngx_http_gzip_type_t *type;
|
|
0
|
270
|
|
|
271 conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
|
|
|
272
|
|
|
273 if (!conf->enable
|
|
2
|
274 || (r->headers_out.status != NGX_HTTP_OK
|
|
|
275 && r->headers_out.status != NGX_HTTP_FORBIDDEN
|
|
|
276 && r->headers_out.status != NGX_HTTP_NOT_FOUND)
|
|
0
|
277 || r->header_only
|
|
|
278 || r->http_version < conf->http_version
|
|
2
|
279 || r->headers_out.content_type == NULL
|
|
0
|
280 || (r->headers_out.content_encoding
|
|
|
281 && r->headers_out.content_encoding->value.len)
|
|
|
282 || r->headers_in.accept_encoding == NULL
|
|
|
283 || (r->headers_out.content_length_n != -1
|
|
|
284 && r->headers_out.content_length_n < conf->min_length)
|
|
|
285 || ngx_strstr(r->headers_in.accept_encoding->value.data, "gzip") == NULL
|
|
|
286 )
|
|
|
287 {
|
|
|
288 return ngx_http_next_header_filter(r);
|
|
|
289 }
|
|
|
290
|
|
2
|
291
|
|
|
292 found = 0;
|
|
|
293 type = conf->types->elts;
|
|
|
294
|
|
|
295 for (i = 0; i < conf->types->nelts; i++) {
|
|
|
296 if (r->headers_out.content_type->value.len >= type[i].name.len
|
|
|
297 && ngx_strncasecmp(r->headers_out.content_type->value.data,
|
|
|
298 type[i].name.data, type[i].name.len) == 0)
|
|
|
299 {
|
|
|
300 found = 1;
|
|
|
301 break;
|
|
|
302 }
|
|
|
303 }
|
|
|
304
|
|
|
305 if (!found) {
|
|
0
|
306 return ngx_http_next_header_filter(r);
|
|
|
307 }
|
|
|
308
|
|
|
309
|
|
|
310 if (r->headers_in.via) {
|
|
|
311 if (conf->proxied & NGX_HTTP_GZIP_PROXIED_OFF) {
|
|
|
312 return ngx_http_next_header_filter(r);
|
|
|
313 }
|
|
|
314
|
|
|
315 if (!(conf->proxied & NGX_HTTP_GZIP_PROXIED_ANY)
|
|
|
316 && ngx_http_gzip_proxied(r, conf) == NGX_DECLINED)
|
|
|
317 {
|
|
|
318 return ngx_http_next_header_filter(r);
|
|
|
319 }
|
|
|
320 }
|
|
|
321
|
|
|
322
|
|
|
323 /*
|
|
|
324 * if the URL (without the "http://" prefix) is longer than 253 bytes
|
|
|
325 * then MSIE 4.x can not handle the compressed stream - it waits too long,
|
|
|
326 * hangs up or crashes
|
|
|
327 */
|
|
|
328
|
|
|
329 if (r->headers_in.msie4 && r->unparsed_uri.len > 200) {
|
|
|
330 return ngx_http_next_header_filter(r);
|
|
|
331 }
|
|
|
332
|
|
|
333
|
|
|
334 ngx_http_create_ctx(r, ctx, ngx_http_gzip_filter_module,
|
|
|
335 sizeof(ngx_http_gzip_ctx_t), NGX_ERROR);
|
|
|
336 ctx->request = r;
|
|
|
337
|
|
|
338 r->headers_out.content_encoding = ngx_list_push(&r->headers_out.headers);
|
|
|
339 if (r->headers_out.content_encoding == NULL) {
|
|
|
340 return NGX_ERROR;
|
|
|
341 }
|
|
|
342
|
|
|
343 r->headers_out.content_encoding->key.len = sizeof("Content-Encoding") - 1;
|
|
|
344 r->headers_out.content_encoding->key.data = (u_char *) "Content-Encoding";
|
|
|
345 r->headers_out.content_encoding->value.len = sizeof("gzip") - 1;
|
|
|
346 r->headers_out.content_encoding->value.data = (u_char *) "gzip";
|
|
|
347
|
|
|
348 ctx->length = r->headers_out.content_length_n;
|
|
|
349 r->headers_out.content_length_n = -1;
|
|
|
350 if (r->headers_out.content_length) {
|
|
|
351 r->headers_out.content_length->key.len = 0;
|
|
|
352 r->headers_out.content_length = NULL;
|
|
|
353 }
|
|
|
354 r->filter_need_in_memory = 1;
|
|
|
355
|
|
|
356 return ngx_http_next_header_filter(r);
|
|
|
357 }
|
|
|
358
|
|
|
359
|
|
|
360 static ngx_int_t ngx_http_gzip_proxied(ngx_http_request_t *r,
|
|
|
361 ngx_http_gzip_conf_t *conf)
|
|
|
362 {
|
|
|
363 time_t date, expires;
|
|
|
364
|
|
|
365 if (r->headers_in.authorization
|
|
|
366 && (conf->proxied & NGX_HTTP_GZIP_PROXIED_AUTH))
|
|
|
367 {
|
|
|
368 return NGX_OK;
|
|
|
369 }
|
|
|
370
|
|
|
371 if (r->headers_out.expires) {
|
|
|
372
|
|
|
373 if (!(conf->proxied & NGX_HTTP_GZIP_PROXIED_EXPIRED)) {
|
|
|
374 return NGX_DECLINED;
|
|
|
375 }
|
|
|
376
|
|
|
377 expires = ngx_http_parse_time(r->headers_out.expires->value.data,
|
|
|
378 r->headers_out.expires->value.len);
|
|
|
379 if (expires == NGX_ERROR) {
|
|
|
380 return NGX_DECLINED;
|
|
|
381 }
|
|
|
382
|
|
|
383 if (r->headers_out.date) {
|
|
|
384 date = ngx_http_parse_time(r->headers_out.date->value.data,
|
|
|
385 r->headers_out.date->value.len);
|
|
|
386 if (date == NGX_ERROR) {
|
|
|
387 return NGX_DECLINED;
|
|
|
388 }
|
|
|
389
|
|
|
390 } else {
|
|
|
391 date = ngx_time();
|
|
|
392 }
|
|
|
393
|
|
|
394 if (expires < date) {
|
|
|
395 return NGX_OK;
|
|
|
396 }
|
|
|
397
|
|
|
398 return NGX_DECLINED;
|
|
|
399 }
|
|
|
400
|
|
|
401 if (r->headers_out.cache_control) {
|
|
|
402
|
|
|
403 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_CACHE)
|
|
|
404 && ngx_strstr(r->headers_out.cache_control->value.data, "no-cache"))
|
|
|
405 {
|
|
|
406 return NGX_OK;
|
|
|
407 }
|
|
|
408
|
|
|
409 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_STORE)
|
|
|
410 && ngx_strstr(r->headers_out.cache_control->value.data, "no-store"))
|
|
|
411 {
|
|
|
412 return NGX_OK;
|
|
|
413 }
|
|
|
414
|
|
|
415 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_PRIVATE)
|
|
|
416 && ngx_strstr(r->headers_out.cache_control->value.data, "private"))
|
|
|
417 {
|
|
|
418 return NGX_OK;
|
|
|
419 }
|
|
|
420
|
|
|
421 return NGX_DECLINED;
|
|
|
422 }
|
|
|
423
|
|
|
424 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_LM)
|
|
|
425 && r->headers_out.last_modified)
|
|
|
426 {
|
|
|
427 return NGX_DECLINED;
|
|
|
428 }
|
|
|
429
|
|
|
430 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_ETAG)
|
|
|
431 && r->headers_out.etag)
|
|
|
432 {
|
|
|
433 return NGX_DECLINED;
|
|
|
434 }
|
|
|
435
|
|
|
436 return NGX_OK;
|
|
|
437 }
|
|
|
438
|
|
|
439
|
|
|
440 static ngx_int_t ngx_http_gzip_body_filter(ngx_http_request_t *r,
|
|
|
441 ngx_chain_t *in)
|
|
|
442 {
|
|
18
|
443 int rc, wbits, memlevel;
|
|
|
444 ngx_int_t last;
|
|
0
|
445 struct gztrailer *trailer;
|
|
|
446 ngx_buf_t *b;
|
|
|
447 ngx_chain_t *cl;
|
|
|
448 ngx_http_gzip_ctx_t *ctx;
|
|
|
449 ngx_http_gzip_conf_t *conf;
|
|
|
450
|
|
|
451 ctx = ngx_http_get_module_ctx(r, ngx_http_gzip_filter_module);
|
|
|
452
|
|
|
453 if (ctx == NULL || ctx->done) {
|
|
|
454 return ngx_http_next_body_filter(r, in);
|
|
|
455 }
|
|
|
456
|
|
|
457 conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
|
|
|
458
|
|
|
459 if (ctx->preallocated == NULL) {
|
|
|
460 wbits = conf->wbits;
|
|
|
461 memlevel = conf->memlevel;
|
|
|
462
|
|
|
463 if (ctx->length > 0) {
|
|
|
464
|
|
|
465 /* the actual zlib window size is smaller by 262 bytes */
|
|
|
466
|
|
|
467 while (ctx->length < ((1 << (wbits - 1)) - 262)) {
|
|
|
468 wbits--;
|
|
|
469 memlevel--;
|
|
|
470 }
|
|
|
471 }
|
|
|
472
|
|
|
473 /*
|
|
|
474 * We preallocate a memory for zlib in one buffer (200K-400K), this
|
|
32
|
475 * decreases a number of malloc() and free() calls and also probably
|
|
|
476 * decreases a number of syscalls (sbrk() and so on).
|
|
0
|
477 * Besides we free this memory as soon as the gzipping will complete
|
|
|
478 * and do not wait while a whole response will be sent to a client.
|
|
|
479 *
|
|
|
480 * 8K is for zlib deflate_state, it takes
|
|
|
481 * * 5816 bytes on x86 and sparc64 (32-bit mode)
|
|
|
482 * * 5920 bytes on amd64 and sparc64
|
|
|
483 */
|
|
|
484
|
|
|
485 ctx->allocated = 8192 + (1 << (wbits + 2)) + (1 << (memlevel + 9));
|
|
|
486
|
|
|
487 if (!(ctx->preallocated = ngx_palloc(r->pool, ctx->allocated))) {
|
|
|
488 return NGX_ERROR;
|
|
|
489 }
|
|
|
490
|
|
|
491 ctx->free_mem = ctx->preallocated;
|
|
|
492
|
|
|
493 ctx->zstream.zalloc = ngx_http_gzip_filter_alloc;
|
|
|
494 ctx->zstream.zfree = ngx_http_gzip_filter_free;
|
|
|
495 ctx->zstream.opaque = ctx;
|
|
|
496
|
|
|
497 rc = deflateInit2(&ctx->zstream, conf->level, Z_DEFLATED,
|
|
|
498 -wbits, memlevel, Z_DEFAULT_STRATEGY);
|
|
|
499
|
|
|
500 if (rc != Z_OK) {
|
|
|
501 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
502 "deflateInit2() failed: %d", rc);
|
|
28
|
503 ngx_http_gzip_error(ctx);
|
|
|
504 return NGX_ERROR;
|
|
0
|
505 }
|
|
|
506
|
|
|
507 if (!(b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)))) {
|
|
28
|
508 ngx_http_gzip_error(ctx);
|
|
|
509 return NGX_ERROR;
|
|
0
|
510 }
|
|
|
511
|
|
|
512 b->memory = 1;
|
|
|
513 b->pos = gzheader;
|
|
|
514 b->last = b->pos + 10;
|
|
|
515
|
|
10
|
516 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
517 ngx_http_gzip_error(ctx);
|
|
|
518 return NGX_ERROR;
|
|
10
|
519 }
|
|
|
520 cl->buf = b;
|
|
|
521 cl->next = NULL;
|
|
18
|
522
|
|
|
523 /*
|
|
|
524 * We pass the gzheader to the next filter now to avoid its linking
|
|
|
525 * to the ctx->busy chain. zlib does not usually output the compressed
|
|
|
526 * data in the initial iterations, so the gzheader that was linked
|
|
|
527 * to the ctx->busy chain would be flushed by ngx_http_write_filter().
|
|
|
528 */
|
|
|
529
|
|
|
530 if (ngx_http_next_body_filter(r, cl) == NGX_ERROR) {
|
|
28
|
531 ngx_http_gzip_error(ctx);
|
|
|
532 return NGX_ERROR;
|
|
18
|
533 }
|
|
|
534
|
|
|
535 ctx->last_out = &ctx->out;
|
|
0
|
536
|
|
|
537 ctx->crc32 = crc32(0L, Z_NULL, 0);
|
|
|
538 ctx->flush = Z_NO_FLUSH;
|
|
|
539 }
|
|
|
540
|
|
|
541 if (in) {
|
|
|
542 if (ngx_chain_add_copy(r->pool, &ctx->in, in) == NGX_ERROR) {
|
|
28
|
543 ngx_http_gzip_error(ctx);
|
|
|
544 return NGX_ERROR;
|
|
0
|
545 }
|
|
|
546 }
|
|
|
547
|
|
|
548 last = NGX_NONE;
|
|
|
549
|
|
|
550 for ( ;; ) {
|
|
|
551
|
|
|
552 for ( ;; ) {
|
|
|
553
|
|
|
554 /* does zlib need a new data ? */
|
|
|
555
|
|
|
556 if (ctx->zstream.avail_in == 0
|
|
|
557 && ctx->flush == Z_NO_FLUSH
|
|
|
558 && !ctx->redo)
|
|
|
559 {
|
|
|
560 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
561 "gzip in: %p", ctx->in);
|
|
0
|
562
|
|
|
563 if (ctx->in == NULL) {
|
|
|
564 break;
|
|
|
565 }
|
|
|
566
|
|
|
567 ctx->in_buf = ctx->in->buf;
|
|
|
568 ctx->in = ctx->in->next;
|
|
|
569
|
|
|
570 ctx->zstream.next_in = ctx->in_buf->pos;
|
|
|
571 ctx->zstream.avail_in = ctx->in_buf->last - ctx->in_buf->pos;
|
|
|
572
|
|
|
573 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
574 "gzip in_buf:%p ni:%p ai:%ud",
|
|
0
|
575 ctx->in_buf,
|
|
|
576 ctx->zstream.next_in, ctx->zstream.avail_in);
|
|
|
577
|
|
|
578 /* STUB */
|
|
|
579 if (ctx->in_buf->last < ctx->in_buf->pos) {
|
|
|
580 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
581 "zstream.avail_in is huge");
|
|
|
582 ctx->done = 1;
|
|
|
583 return NGX_ERROR;
|
|
|
584 }
|
|
|
585 /**/
|
|
|
586
|
|
|
587 if (ctx->in_buf->last_buf) {
|
|
|
588 ctx->flush = Z_FINISH;
|
|
|
589
|
|
|
590 } else if (ctx->in_buf->flush) {
|
|
|
591 ctx->flush = Z_SYNC_FLUSH;
|
|
|
592 }
|
|
|
593
|
|
|
594 if (ctx->zstream.avail_in == 0) {
|
|
|
595 if (ctx->flush == Z_NO_FLUSH) {
|
|
|
596 continue;
|
|
|
597 }
|
|
|
598
|
|
|
599 } else {
|
|
|
600 ctx->crc32 = crc32(ctx->crc32, ctx->zstream.next_in,
|
|
|
601 ctx->zstream.avail_in);
|
|
|
602 }
|
|
|
603 }
|
|
|
604
|
|
|
605
|
|
|
606 /* is there a space for the gzipped data ? */
|
|
|
607
|
|
|
608 if (ctx->zstream.avail_out == 0) {
|
|
|
609
|
|
|
610 if (ctx->free) {
|
|
|
611 ctx->out_buf = ctx->free->buf;
|
|
|
612 ctx->free = ctx->free->next;
|
|
|
613
|
|
|
614 } else if (ctx->bufs < conf->bufs.num) {
|
|
|
615 ctx->out_buf = ngx_create_temp_buf(r->pool,
|
|
|
616 conf->bufs.size);
|
|
|
617 if (ctx->out_buf == NULL) {
|
|
28
|
618 ngx_http_gzip_error(ctx);
|
|
|
619 return NGX_ERROR;
|
|
0
|
620 }
|
|
|
621
|
|
|
622 ctx->out_buf->tag = (ngx_buf_tag_t)
|
|
|
623 &ngx_http_gzip_filter_module;
|
|
|
624 ctx->out_buf->recycled = 1;
|
|
|
625 ctx->bufs++;
|
|
|
626
|
|
|
627 } else {
|
|
|
628 break;
|
|
|
629 }
|
|
|
630
|
|
|
631 ctx->zstream.next_out = ctx->out_buf->pos;
|
|
|
632 ctx->zstream.avail_out = conf->bufs.size;
|
|
|
633 }
|
|
|
634
|
|
|
635 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
636 "deflate in: ni:%p no:%p ai:%ud ao:%ud fl:%d redo:%d",
|
|
|
637 ctx->zstream.next_in, ctx->zstream.next_out,
|
|
|
638 ctx->zstream.avail_in, ctx->zstream.avail_out,
|
|
|
639 ctx->flush, ctx->redo);
|
|
0
|
640
|
|
|
641 rc = deflate(&ctx->zstream, ctx->flush);
|
|
|
642
|
|
|
643 if (rc != Z_OK && rc != Z_STREAM_END) {
|
|
|
644 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
645 "deflate() failed: %d, %d", ctx->flush, rc);
|
|
28
|
646 ngx_http_gzip_error(ctx);
|
|
|
647 return NGX_ERROR;
|
|
0
|
648 }
|
|
|
649
|
|
|
650 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
651 "deflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
|
|
0
|
652 ctx->zstream.next_in, ctx->zstream.next_out,
|
|
|
653 ctx->zstream.avail_in, ctx->zstream.avail_out,
|
|
|
654 rc);
|
|
|
655
|
|
|
656 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
657 "gzip in_buf:%p pos:%p",
|
|
0
|
658 ctx->in_buf, ctx->in_buf->pos);
|
|
|
659
|
|
|
660
|
|
|
661 if (ctx->zstream.next_in) {
|
|
|
662 ctx->in_buf->pos = ctx->zstream.next_in;
|
|
|
663
|
|
|
664 if (ctx->zstream.avail_in == 0) {
|
|
|
665 ctx->zstream.next_in = NULL;
|
|
|
666 }
|
|
|
667 }
|
|
|
668
|
|
|
669 ctx->out_buf->last = ctx->zstream.next_out;
|
|
|
670
|
|
|
671 if (ctx->zstream.avail_out == 0) {
|
|
|
672
|
|
|
673 /* zlib wants to output some more gzipped data */
|
|
|
674
|
|
10
|
675 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
676 ngx_http_gzip_error(ctx);
|
|
|
677 return NGX_ERROR;
|
|
10
|
678 }
|
|
|
679 cl->buf = ctx->out_buf;
|
|
|
680 cl->next = NULL;
|
|
0
|
681 *ctx->last_out = cl;
|
|
|
682 ctx->last_out = &cl->next;
|
|
|
683
|
|
|
684 ctx->redo = 1;
|
|
|
685
|
|
|
686 continue;
|
|
|
687 }
|
|
|
688
|
|
|
689 ctx->redo = 0;
|
|
|
690
|
|
|
691 if (ctx->flush == Z_SYNC_FLUSH) {
|
|
|
692
|
|
|
693 ctx->out_buf->flush = 0;
|
|
|
694 ctx->flush = Z_NO_FLUSH;
|
|
|
695
|
|
10
|
696 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
697 ngx_http_gzip_error(ctx);
|
|
|
698 return NGX_ERROR;
|
|
10
|
699 }
|
|
|
700 cl->buf = ctx->out_buf;
|
|
|
701 cl->next = NULL;
|
|
0
|
702 *ctx->last_out = cl;
|
|
|
703 ctx->last_out = &cl->next;
|
|
|
704
|
|
|
705 break;
|
|
|
706 }
|
|
|
707
|
|
|
708 if (rc == Z_STREAM_END) {
|
|
|
709
|
|
|
710 ctx->zin = ctx->zstream.total_in;
|
|
|
711 ctx->zout = 10 + ctx->zstream.total_out + 8;
|
|
|
712
|
|
|
713 rc = deflateEnd(&ctx->zstream);
|
|
|
714
|
|
|
715 if (rc != Z_OK) {
|
|
|
716 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
717 "deflateEnd() failed: %d", rc);
|
|
28
|
718 ngx_http_gzip_error(ctx);
|
|
|
719 return NGX_ERROR;
|
|
0
|
720 }
|
|
|
721
|
|
|
722 ngx_pfree(r->pool, ctx->preallocated);
|
|
|
723
|
|
10
|
724 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
725 ngx_http_gzip_error(ctx);
|
|
|
726 return NGX_ERROR;
|
|
10
|
727 }
|
|
|
728 cl->buf = ctx->out_buf;
|
|
|
729 cl->next = NULL;
|
|
0
|
730 *ctx->last_out = cl;
|
|
|
731 ctx->last_out = &cl->next;
|
|
|
732
|
|
|
733 if (ctx->zstream.avail_out >= 8) {
|
|
|
734 trailer = (struct gztrailer *) ctx->out_buf->last;
|
|
|
735 ctx->out_buf->last += 8;
|
|
|
736 ctx->out_buf->last_buf = 1;
|
|
|
737
|
|
|
738 } else {
|
|
|
739 if (!(b = ngx_create_temp_buf(r->pool, 8))) {
|
|
28
|
740 ngx_http_gzip_error(ctx);
|
|
|
741 return NGX_ERROR;
|
|
0
|
742 }
|
|
|
743
|
|
|
744 b->last_buf = 1;
|
|
|
745
|
|
10
|
746 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
747 ngx_http_gzip_error(ctx);
|
|
|
748 return NGX_ERROR;
|
|
10
|
749 }
|
|
|
750 cl->buf = b;
|
|
|
751 cl->next = NULL;
|
|
0
|
752 *ctx->last_out = cl;
|
|
|
753 ctx->last_out = &cl->next;
|
|
|
754 trailer = (struct gztrailer *) b->pos;
|
|
|
755 b->last += 8;
|
|
|
756 }
|
|
|
757
|
|
28
|
758 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
|
|
|
759
|
|
0
|
760 trailer->crc32 = ctx->crc32;
|
|
|
761 trailer->zlen = ctx->zin;
|
|
28
|
762
|
|
0
|
763 #else
|
|
28
|
764 trailer->crc32[0] = (u_char) (ctx->crc32 & 0xff);
|
|
|
765 trailer->crc32[1] = (u_char) ((ctx->crc32 >> 8) & 0xff);
|
|
|
766 trailer->crc32[2] = (u_char) ((ctx->crc32 >> 16) & 0xff);
|
|
|
767 trailer->crc32[3] = (u_char) ((ctx->crc32 >> 24) & 0xff);
|
|
0
|
768
|
|
28
|
769 trailer->zlen[0] = (u_char) (ctx->zin & 0xff);
|
|
|
770 trailer->zlen[1] = (u_char) ((ctx->zin >> 8) & 0xff);
|
|
|
771 trailer->zlen[2] = (u_char) ((ctx->zin >> 16) & 0xff);
|
|
|
772 trailer->zlen[3] = (u_char) ((ctx->zin >> 24) & 0xff);
|
|
0
|
773 #endif
|
|
|
774
|
|
|
775 ctx->zstream.avail_in = 0;
|
|
|
776 ctx->zstream.avail_out = 0;
|
|
|
777
|
|
|
778 ctx->done = 1;
|
|
|
779
|
|
|
780 break;
|
|
|
781 }
|
|
|
782
|
|
|
783 if (conf->no_buffer && ctx->in == NULL) {
|
|
10
|
784 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
785 ngx_http_gzip_error(ctx);
|
|
|
786 return NGX_ERROR;
|
|
10
|
787 }
|
|
|
788 cl->buf = ctx->out_buf;
|
|
|
789 cl->next = NULL;
|
|
0
|
790 *ctx->last_out = cl;
|
|
|
791 ctx->last_out = &cl->next;
|
|
|
792
|
|
|
793 break;
|
|
|
794 }
|
|
|
795 }
|
|
|
796
|
|
18
|
797 if (last == NGX_AGAIN && !ctx->done) {
|
|
0
|
798 return NGX_AGAIN;
|
|
|
799 }
|
|
|
800
|
|
|
801 if (ctx->out == NULL && ctx->busy == NULL) {
|
|
|
802 return NGX_OK;
|
|
|
803 }
|
|
|
804
|
|
|
805 last = ngx_http_next_body_filter(r, ctx->out);
|
|
|
806
|
|
|
807 /*
|
|
|
808 * we do not check NGX_AGAIN here because the downstream filters
|
|
|
809 * may free some buffers and zlib may compress some data into them
|
|
|
810 */
|
|
|
811
|
|
|
812 if (last == NGX_ERROR) {
|
|
28
|
813 ngx_http_gzip_error(ctx);
|
|
|
814 return NGX_ERROR;
|
|
0
|
815 }
|
|
|
816
|
|
|
817 ngx_chain_update_chains(&ctx->free, &ctx->busy, &ctx->out,
|
|
|
818 (ngx_buf_tag_t) &ngx_http_gzip_filter_module);
|
|
|
819 ctx->last_out = &ctx->out;
|
|
|
820
|
|
|
821 if (ctx->done) {
|
|
|
822 return last;
|
|
|
823 }
|
|
|
824 }
|
|
|
825 }
|
|
|
826
|
|
|
827
|
|
|
828 static void *ngx_http_gzip_filter_alloc(void *opaque, u_int items, u_int size)
|
|
|
829 {
|
|
|
830 ngx_http_gzip_ctx_t *ctx = opaque;
|
|
|
831
|
|
|
832 void *p;
|
|
|
833 ngx_uint_t alloc;
|
|
|
834
|
|
|
835 alloc = items * size;
|
|
10
|
836
|
|
0
|
837 if (alloc % 512 != 0) {
|
|
|
838
|
|
|
839 /*
|
|
10
|
840 * The zlib deflate_state allocation, it takes about 6K,
|
|
|
841 * we allocate 8K. Other allocations are divisible by 512.
|
|
0
|
842 */
|
|
|
843
|
|
|
844 alloc = (alloc + ngx_pagesize - 1) & ~(ngx_pagesize - 1);
|
|
|
845 }
|
|
|
846
|
|
|
847 if (alloc <= ctx->allocated) {
|
|
|
848 p = ctx->free_mem;
|
|
|
849 ctx->free_mem += alloc;
|
|
|
850 ctx->allocated -= alloc;
|
|
|
851
|
|
|
852 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
10
|
853 "gzip alloc: n:%ud s:%ud a:%ud p:%p",
|
|
0
|
854 items, size, alloc, p);
|
|
|
855
|
|
|
856 return p;
|
|
|
857 }
|
|
|
858
|
|
|
859 ngx_log_error(NGX_LOG_ALERT, ctx->request->connection->log, 0,
|
|
10
|
860 "gzip filter failed to use preallocated memory: %ud of %ud",
|
|
0
|
861 items * size, ctx->allocated);
|
|
|
862
|
|
|
863 p = ngx_palloc(ctx->request->pool, items * size);
|
|
|
864
|
|
|
865 return p;
|
|
|
866 }
|
|
|
867
|
|
|
868
|
|
|
869 static void ngx_http_gzip_filter_free(void *opaque, void *address)
|
|
|
870 {
|
|
|
871 #if 0
|
|
|
872 ngx_http_gzip_ctx_t *ctx = opaque;
|
|
|
873
|
|
|
874 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
10
|
875 "gzip free: %p", address);
|
|
0
|
876 #endif
|
|
|
877 }
|
|
|
878
|
|
|
879
|
|
|
880 static u_char *ngx_http_gzip_log_ratio(ngx_http_request_t *r, u_char *buf,
|
|
28
|
881 ngx_http_log_op_t *op)
|
|
0
|
882 {
|
|
|
883 ngx_uint_t zint, zfrac;
|
|
|
884 ngx_http_gzip_ctx_t *ctx;
|
|
|
885
|
|
|
886 ctx = ngx_http_get_module_ctx(r, ngx_http_gzip_filter_module);
|
|
|
887
|
|
|
888 if (ctx == NULL || ctx->zout == 0) {
|
|
|
889 *buf = '-';
|
|
|
890 return buf + 1;
|
|
|
891 }
|
|
|
892
|
|
|
893 zint = (ngx_uint_t) (ctx->zin / ctx->zout);
|
|
|
894 zfrac = (ngx_uint_t) ((ctx->zin * 100 / ctx->zout) % 100);
|
|
|
895
|
|
4
|
896 if ((ctx->zin * 1000 / ctx->zout) % 10 > 4) {
|
|
|
897
|
|
|
898 /* the rounding, e.g., 2.125 to 2.13 */
|
|
|
899
|
|
|
900 zfrac++;
|
|
|
901
|
|
|
902 if (zfrac > 99) {
|
|
0
|
903 zint++;
|
|
|
904 zfrac = 0;
|
|
|
905 }
|
|
|
906 }
|
|
|
907
|
|
4
|
908 return ngx_sprintf(buf, "%ui.%02ui", zint, zfrac);
|
|
0
|
909 }
|
|
|
910
|
|
|
911
|
|
28
|
912 static void ngx_http_gzip_error(ngx_http_gzip_ctx_t *ctx)
|
|
0
|
913 {
|
|
|
914 deflateEnd(&ctx->zstream);
|
|
|
915
|
|
18
|
916 if (ctx->preallocated) {
|
|
|
917 ngx_pfree(ctx->request->pool, ctx->preallocated);
|
|
|
918 }
|
|
0
|
919
|
|
|
920 ctx->zstream.avail_in = 0;
|
|
|
921 ctx->zstream.avail_out = 0;
|
|
|
922
|
|
|
923 ctx->done = 1;
|
|
|
924
|
|
28
|
925 return;
|
|
0
|
926 }
|
|
|
927
|
|
|
928
|
|
28
|
929 static ngx_int_t ngx_http_gzip_add_log_formats(ngx_conf_t *cf)
|
|
0
|
930 {
|
|
|
931 ngx_http_log_op_name_t *op;
|
|
|
932
|
|
|
933 for (op = ngx_http_gzip_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
28
|
934 op->run = NULL;
|
|
0
|
935
|
|
28
|
936 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
0
|
937 if (op->name.len == 0) {
|
|
28
|
938 op = (ngx_http_log_op_name_t *) op->run;
|
|
0
|
939 }
|
|
|
940 }
|
|
|
941
|
|
28
|
942 op->run = (ngx_http_log_op_run_pt) ngx_http_gzip_log_fmt_ops;
|
|
0
|
943
|
|
|
944 return NGX_OK;
|
|
|
945 }
|
|
|
946
|
|
|
947
|
|
|
948 static ngx_int_t ngx_http_gzip_filter_init(ngx_cycle_t *cycle)
|
|
|
949 {
|
|
|
950 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
951 ngx_http_top_header_filter = ngx_http_gzip_header_filter;
|
|
|
952
|
|
|
953 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
954 ngx_http_top_body_filter = ngx_http_gzip_body_filter;
|
|
|
955
|
|
|
956 return NGX_OK;
|
|
|
957 }
|
|
|
958
|
|
|
959
|
|
|
960 static void *ngx_http_gzip_create_conf(ngx_conf_t *cf)
|
|
|
961 {
|
|
|
962 ngx_http_gzip_conf_t *conf;
|
|
|
963
|
|
|
964 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_gzip_conf_t)))) {
|
|
|
965 return NGX_CONF_ERROR;
|
|
|
966 }
|
|
|
967
|
|
|
968 /*
|
|
28
|
969 * set by ngx_pcalloc():
|
|
|
970 *
|
|
|
971 * conf->bufs.num = 0;
|
|
|
972 * conf->proxied = 0;
|
|
|
973 * conf->types = NULL;
|
|
0
|
974 */
|
|
|
975
|
|
|
976 conf->enable = NGX_CONF_UNSET;
|
|
|
977 conf->no_buffer = NGX_CONF_UNSET;
|
|
|
978
|
|
|
979 conf->http_version = NGX_CONF_UNSET_UINT;
|
|
|
980
|
|
|
981 conf->level = NGX_CONF_UNSET;
|
|
|
982 conf->wbits = (size_t) NGX_CONF_UNSET;
|
|
|
983 conf->memlevel = (size_t) NGX_CONF_UNSET;
|
|
|
984 conf->min_length = NGX_CONF_UNSET;
|
|
|
985
|
|
|
986 return conf;
|
|
|
987 }
|
|
|
988
|
|
|
989
|
|
|
990 static char *ngx_http_gzip_merge_conf(ngx_conf_t *cf,
|
|
|
991 void *parent, void *child)
|
|
|
992 {
|
|
|
993 ngx_http_gzip_conf_t *prev = parent;
|
|
|
994 ngx_http_gzip_conf_t *conf = child;
|
|
|
995
|
|
2
|
996 ngx_http_gzip_type_t *type;
|
|
|
997
|
|
0
|
998 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
|
999
|
|
|
1000 ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 4, ngx_pagesize);
|
|
|
1001
|
|
|
1002 ngx_conf_merge_unsigned_value(conf->http_version, prev->http_version,
|
|
|
1003 NGX_HTTP_VERSION_11);
|
|
|
1004 ngx_conf_merge_bitmask_value(conf->proxied, prev->proxied,
|
|
|
1005 (NGX_CONF_BITMASK_SET
|
|
|
1006 |NGX_HTTP_GZIP_PROXIED_OFF));
|
|
|
1007
|
|
|
1008 ngx_conf_merge_value(conf->level, prev->level, 1);
|
|
|
1009 ngx_conf_merge_size_value(conf->wbits, prev->wbits, MAX_WBITS);
|
|
|
1010 ngx_conf_merge_size_value(conf->memlevel, prev->memlevel,
|
|
|
1011 MAX_MEM_LEVEL - 1);
|
|
|
1012 ngx_conf_merge_value(conf->min_length, prev->min_length, 0);
|
|
|
1013 ngx_conf_merge_value(conf->no_buffer, prev->no_buffer, 0);
|
|
|
1014
|
|
2
|
1015 if (conf->types == NULL) {
|
|
|
1016 if (prev->types == NULL) {
|
|
|
1017 conf->types = ngx_array_create(cf->pool, 1,
|
|
|
1018 sizeof(ngx_http_gzip_type_t));
|
|
|
1019 if (conf->types == NULL) {
|
|
|
1020 return NGX_CONF_ERROR;
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 if (!(type = ngx_array_push(conf->types))) {
|
|
|
1024 return NGX_CONF_ERROR;
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 type->name.len = sizeof("text/html") - 1;
|
|
|
1028 type->name.data = (u_char *) "text/html";
|
|
|
1029 type->enable = 1;
|
|
|
1030
|
|
|
1031 } else {
|
|
|
1032 conf->types = prev->types;
|
|
|
1033 }
|
|
|
1034 }
|
|
|
1035
|
|
|
1036 return NGX_CONF_OK;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039
|
|
|
1040 static char *ngx_http_gzip_set_types(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
1041 void *conf)
|
|
|
1042 {
|
|
|
1043 ngx_http_gzip_conf_t *gcf = conf;
|
|
|
1044
|
|
|
1045 ngx_str_t *value;
|
|
|
1046 ngx_uint_t i;
|
|
|
1047 ngx_http_gzip_type_t *type;
|
|
|
1048
|
|
|
1049 if (gcf->types == NULL) {
|
|
|
1050 gcf->types = ngx_array_create(cf->pool, 5,
|
|
|
1051 sizeof(ngx_http_gzip_type_t));
|
|
|
1052 if (gcf->types == NULL) {
|
|
|
1053 return NGX_CONF_ERROR;
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 if (!(type = ngx_array_push(gcf->types))) {
|
|
|
1057 return NGX_CONF_ERROR;
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 type->name.len = sizeof("text/html") - 1;
|
|
|
1061 type->name.data = (u_char *) "text/html";
|
|
|
1062 type->enable = 1;
|
|
|
1063 }
|
|
|
1064
|
|
|
1065 value = cf->args->elts;
|
|
|
1066
|
|
|
1067 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1068
|
|
|
1069 if (ngx_strcmp(value[i].data, "text/html") == 0) {
|
|
|
1070 continue;
|
|
|
1071 }
|
|
|
1072
|
|
|
1073 if (!(type = ngx_array_push(gcf->types))) {
|
|
|
1074 return NGX_CONF_ERROR;
|
|
|
1075 }
|
|
|
1076
|
|
|
1077 type->name.len = value[i].len;
|
|
|
1078
|
|
|
1079 if (!(type->name.data = ngx_palloc(cf->pool, type->name.len + 1))) {
|
|
|
1080 return NGX_CONF_ERROR;
|
|
|
1081 }
|
|
|
1082
|
|
|
1083 ngx_cpystrn(type->name.data, value[i].data, type->name.len + 1);
|
|
|
1084 }
|
|
|
1085
|
|
0
|
1086 return NGX_CONF_OK;
|
|
|
1087 }
|
|
|
1088
|
|
|
1089
|
|
|
1090 static char *ngx_http_gzip_set_window(ngx_conf_t *cf, void *post, void *data)
|
|
|
1091 {
|
|
|
1092 int *np = data;
|
|
|
1093
|
|
|
1094 int wbits, wsize;
|
|
|
1095
|
|
|
1096 wbits = 15;
|
|
|
1097
|
|
|
1098 for (wsize = 32 * 1024; wsize > 256; wsize >>= 1) {
|
|
|
1099
|
|
|
1100 if (wsize == *np) {
|
|
|
1101 *np = wbits;
|
|
|
1102
|
|
|
1103 return NGX_CONF_OK;
|
|
|
1104 }
|
|
|
1105
|
|
|
1106 wbits--;
|
|
|
1107 }
|
|
|
1108
|
|
|
1109 return "must be 512, 1k, 2k, 4k, 8k, 16k, or 32k";
|
|
|
1110 }
|
|
|
1111
|
|
|
1112
|
|
|
1113 static char *ngx_http_gzip_set_hash(ngx_conf_t *cf, void *post, void *data)
|
|
|
1114 {
|
|
|
1115 int *np = data;
|
|
|
1116
|
|
|
1117 int memlevel, hsize;
|
|
|
1118
|
|
|
1119 memlevel = 9;
|
|
|
1120
|
|
|
1121 for (hsize = 128 * 1024; hsize > 256; hsize >>= 1) {
|
|
|
1122
|
|
|
1123 if (hsize == *np) {
|
|
|
1124 *np = memlevel;
|
|
|
1125
|
|
|
1126 return NGX_CONF_OK;
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 memlevel--;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 return "must be 512, 1k, 2k, 4k, 8k, 16k, 32k, 64k, or 128k";
|
|
|
1133 }
|
