Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_sub_filter_module.c @ 5739:6e4bb1d6679d
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author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Thu, 26 Jun 2014 03:34:02 +0400 |
parents | e491b26fa5a1 |
children | 5322be87fc02 |
rev | line source |
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1172 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
1172 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
13 typedef struct { | |
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14 ngx_str_t match; |
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15 ngx_http_complex_value_t value; |
1172 | 16 |
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17 ngx_hash_t types; |
1172 | 18 |
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19 ngx_flag_t once; |
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20 ngx_flag_t last_modified; |
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21 |
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22 ngx_array_t *types_keys; |
1172 | 23 } ngx_http_sub_loc_conf_t; |
24 | |
25 | |
26 typedef enum { | |
27 sub_start_state = 0, | |
28 sub_match_state, | |
29 } ngx_http_sub_state_e; | |
30 | |
31 | |
32 typedef struct { | |
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33 ngx_str_t match; |
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34 ngx_str_t saved; |
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35 ngx_str_t looked; |
1172 | 36 |
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37 ngx_uint_t once; /* unsigned once:1 */ |
1172 | 38 |
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39 ngx_buf_t *buf; |
1172 | 40 |
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41 u_char *pos; |
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42 u_char *copy_start; |
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43 u_char *copy_end; |
1172 | 44 |
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45 ngx_chain_t *in; |
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46 ngx_chain_t *out; |
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47 ngx_chain_t **last_out; |
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48 ngx_chain_t *busy; |
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49 ngx_chain_t *free; |
1172 | 50 |
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51 ngx_str_t sub; |
1172 | 52 |
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53 ngx_uint_t state; |
1172 | 54 } ngx_http_sub_ctx_t; |
55 | |
56 | |
57 static ngx_int_t ngx_http_sub_output(ngx_http_request_t *r, | |
58 ngx_http_sub_ctx_t *ctx); | |
59 static ngx_int_t ngx_http_sub_parse(ngx_http_request_t *r, | |
60 ngx_http_sub_ctx_t *ctx); | |
61 | |
62 static char * ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, | |
63 void *conf); | |
64 static void *ngx_http_sub_create_conf(ngx_conf_t *cf); | |
65 static char *ngx_http_sub_merge_conf(ngx_conf_t *cf, | |
66 void *parent, void *child); | |
67 static ngx_int_t ngx_http_sub_filter_init(ngx_conf_t *cf); | |
68 | |
69 | |
70 static ngx_command_t ngx_http_sub_filter_commands[] = { | |
71 | |
72 { ngx_string("sub_filter"), | |
73 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
74 ngx_http_sub_filter, | |
75 NGX_HTTP_LOC_CONF_OFFSET, | |
76 0, | |
77 NULL }, | |
78 | |
79 { ngx_string("sub_filter_types"), | |
80 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
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81 ngx_http_types_slot, |
1172 | 82 NGX_HTTP_LOC_CONF_OFFSET, |
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83 offsetof(ngx_http_sub_loc_conf_t, types_keys), |
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84 &ngx_http_html_default_types[0] }, |
1172 | 85 |
86 { ngx_string("sub_filter_once"), | |
87 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
88 ngx_conf_set_flag_slot, | |
89 NGX_HTTP_LOC_CONF_OFFSET, | |
90 offsetof(ngx_http_sub_loc_conf_t, once), | |
91 NULL }, | |
92 | |
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93 { ngx_string("sub_filter_last_modified"), |
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94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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95 ngx_conf_set_flag_slot, |
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96 NGX_HTTP_LOC_CONF_OFFSET, |
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97 offsetof(ngx_http_sub_loc_conf_t, last_modified), |
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98 NULL }, |
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99 |
1172 | 100 ngx_null_command |
101 }; | |
102 | |
103 | |
104 static ngx_http_module_t ngx_http_sub_filter_module_ctx = { | |
105 NULL, /* preconfiguration */ | |
106 ngx_http_sub_filter_init, /* postconfiguration */ | |
107 | |
108 NULL, /* create main configuration */ | |
109 NULL, /* init main configuration */ | |
110 | |
111 NULL, /* create server configuration */ | |
112 NULL, /* merge server configuration */ | |
113 | |
114 ngx_http_sub_create_conf, /* create location configuration */ | |
115 ngx_http_sub_merge_conf /* merge location configuration */ | |
116 }; | |
117 | |
118 | |
119 ngx_module_t ngx_http_sub_filter_module = { | |
120 NGX_MODULE_V1, | |
121 &ngx_http_sub_filter_module_ctx, /* module context */ | |
122 ngx_http_sub_filter_commands, /* module directives */ | |
123 NGX_HTTP_MODULE, /* module type */ | |
124 NULL, /* init master */ | |
125 NULL, /* init module */ | |
126 NULL, /* init process */ | |
127 NULL, /* init thread */ | |
128 NULL, /* exit thread */ | |
129 NULL, /* exit process */ | |
130 NULL, /* exit master */ | |
131 NGX_MODULE_V1_PADDING | |
132 }; | |
133 | |
134 | |
135 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
136 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
137 | |
138 | |
139 static ngx_int_t | |
140 ngx_http_sub_header_filter(ngx_http_request_t *r) | |
141 { | |
142 ngx_http_sub_ctx_t *ctx; | |
143 ngx_http_sub_loc_conf_t *slcf; | |
144 | |
145 slcf = ngx_http_get_module_loc_conf(r, ngx_http_sub_filter_module); | |
146 | |
147 if (slcf->match.len == 0 | |
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148 || r->headers_out.content_length_n == 0 |
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149 || ngx_http_test_content_type(r, &slcf->types) == NULL) |
1172 | 150 { |
151 return ngx_http_next_header_filter(r); | |
152 } | |
153 | |
154 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_sub_ctx_t)); | |
155 if (ctx == NULL) { | |
156 return NGX_ERROR; | |
157 } | |
158 | |
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159 ctx->saved.data = ngx_pnalloc(r->pool, slcf->match.len); |
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160 if (ctx->saved.data == NULL) { |
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161 return NGX_ERROR; |
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162 } |
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163 |
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164 ctx->looked.data = ngx_pnalloc(r->pool, slcf->match.len); |
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165 if (ctx->looked.data == NULL) { |
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166 return NGX_ERROR; |
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167 } |
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168 |
1172 | 169 ngx_http_set_ctx(r, ctx, ngx_http_sub_filter_module); |
170 | |
171 ctx->match = slcf->match; | |
172 ctx->last_out = &ctx->out; | |
173 | |
174 r->filter_need_in_memory = 1; | |
175 | |
176 if (r == r->main) { | |
177 ngx_http_clear_content_length(r); | |
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178 |
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179 if (!slcf->last_modified) { |
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180 ngx_http_clear_last_modified(r); |
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181 ngx_http_clear_etag(r); |
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182 |
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183 } else { |
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184 ngx_http_weak_etag(r); |
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185 } |
1172 | 186 } |
187 | |
188 return ngx_http_next_header_filter(r); | |
189 } | |
190 | |
191 | |
192 static ngx_int_t | |
193 ngx_http_sub_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
194 { | |
195 ngx_int_t rc; | |
196 ngx_buf_t *b; | |
197 ngx_chain_t *cl; | |
198 ngx_http_sub_ctx_t *ctx; | |
199 ngx_http_sub_loc_conf_t *slcf; | |
200 | |
201 ctx = ngx_http_get_module_ctx(r, ngx_http_sub_filter_module); | |
202 | |
203 if (ctx == NULL) { | |
204 return ngx_http_next_body_filter(r, in); | |
205 } | |
206 | |
207 if ((in == NULL | |
208 && ctx->buf == NULL | |
209 && ctx->in == NULL | |
210 && ctx->busy == NULL)) | |
211 { | |
212 return ngx_http_next_body_filter(r, in); | |
213 } | |
214 | |
215 if (ctx->once && (ctx->buf == NULL || ctx->in == NULL)) { | |
216 | |
217 if (ctx->busy) { | |
218 if (ngx_http_sub_output(r, ctx) == NGX_ERROR) { | |
219 return NGX_ERROR; | |
220 } | |
221 } | |
222 | |
223 return ngx_http_next_body_filter(r, in); | |
224 } | |
225 | |
226 /* add the incoming chain to the chain ctx->in */ | |
227 | |
228 if (in) { | |
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229 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { |
1172 | 230 return NGX_ERROR; |
231 } | |
232 } | |
233 | |
234 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
235 "http sub filter \"%V\"", &r->uri); | |
236 | |
237 while (ctx->in || ctx->buf) { | |
238 | |
3642 | 239 if (ctx->buf == NULL) { |
1172 | 240 ctx->buf = ctx->in->buf; |
241 ctx->in = ctx->in->next; | |
242 ctx->pos = ctx->buf->pos; | |
243 } | |
244 | |
245 if (ctx->state == sub_start_state) { | |
246 ctx->copy_start = ctx->pos; | |
247 ctx->copy_end = ctx->pos; | |
248 } | |
249 | |
250 b = NULL; | |
251 | |
252 while (ctx->pos < ctx->buf->last) { | |
253 | |
254 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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255 "saved: \"%V\" state: %d", &ctx->saved, ctx->state); |
1172 | 256 |
257 rc = ngx_http_sub_parse(r, ctx); | |
258 | |
259 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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260 "parse: %d, looked: \"%V\" %p-%p", |
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261 rc, &ctx->looked, ctx->copy_start, ctx->copy_end); |
1172 | 262 |
263 if (rc == NGX_ERROR) { | |
264 return rc; | |
265 } | |
266 | |
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267 if (ctx->saved.len) { |
1172 | 268 |
269 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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270 "saved: \"%V\"", &ctx->saved); |
1172 | 271 |
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272 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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273 if (cl == NULL) { |
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274 return NGX_ERROR; |
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275 } |
1172 | 276 |
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277 b = cl->buf; |
1172 | 278 |
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279 ngx_memzero(b, sizeof(ngx_buf_t)); |
1172 | 280 |
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281 b->pos = ngx_pnalloc(r->pool, ctx->saved.len); |
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282 if (b->pos == NULL) { |
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283 return NGX_ERROR; |
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284 } |
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285 |
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286 ngx_memcpy(b->pos, ctx->saved.data, ctx->saved.len); |
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287 b->last = b->pos + ctx->saved.len; |
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288 b->memory = 1; |
1172 | 289 |
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290 *ctx->last_out = cl; |
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291 ctx->last_out = &cl->next; |
1172 | 292 |
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293 ctx->saved.len = 0; |
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294 } |
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295 |
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296 if (ctx->copy_start != ctx->copy_end) { |
1172 | 297 |
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298 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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299 if (cl == NULL) { |
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300 return NGX_ERROR; |
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301 } |
1172 | 302 |
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303 b = cl->buf; |
1172 | 304 |
305 ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t)); | |
306 | |
307 b->pos = ctx->copy_start; | |
308 b->last = ctx->copy_end; | |
309 b->shadow = NULL; | |
310 b->last_buf = 0; | |
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311 b->last_in_chain = 0; |
1172 | 312 b->recycled = 0; |
313 | |
314 if (b->in_file) { | |
2079
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315 b->file_last = b->file_pos + (b->last - ctx->buf->pos); |
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316 b->file_pos += b->pos - ctx->buf->pos; |
1172 | 317 } |
318 | |
319 *ctx->last_out = cl; | |
320 ctx->last_out = &cl->next; | |
321 } | |
322 | |
323 if (ctx->state == sub_start_state) { | |
324 ctx->copy_start = ctx->pos; | |
325 ctx->copy_end = ctx->pos; | |
326 | |
327 } else { | |
328 ctx->copy_start = NULL; | |
329 ctx->copy_end = NULL; | |
330 } | |
331 | |
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332 if (ctx->looked.len > (size_t) (ctx->pos - ctx->buf->pos)) { |
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333 ctx->saved.len = ctx->looked.len - (ctx->pos - ctx->buf->pos); |
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334 ngx_memcpy(ctx->saved.data, ctx->looked.data, ctx->saved.len); |
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335 } |
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336 |
1172 | 337 if (rc == NGX_AGAIN) { |
338 continue; | |
339 } | |
340 | |
341 | |
342 /* rc == NGX_OK */ | |
343 | |
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344 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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345 if (cl == NULL) { |
1172 | 346 return NGX_ERROR; |
347 } | |
348 | |
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349 b = cl->buf; |
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350 |
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351 ngx_memzero(b, sizeof(ngx_buf_t)); |
1172 | 352 |
353 slcf = ngx_http_get_module_loc_conf(r, ngx_http_sub_filter_module); | |
354 | |
355 if (ctx->sub.data == NULL) { | |
356 | |
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357 if (ngx_http_complex_value(r, &slcf->value, &ctx->sub) |
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358 != NGX_OK) |
1172 | 359 { |
360 return NGX_ERROR; | |
361 } | |
362 } | |
363 | |
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364 if (ctx->sub.len) { |
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365 b->memory = 1; |
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366 b->pos = ctx->sub.data; |
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367 b->last = ctx->sub.data + ctx->sub.len; |
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368 |
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369 } else { |
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370 b->sync = 1; |
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371 } |
1172 | 372 |
373 *ctx->last_out = cl; | |
374 ctx->last_out = &cl->next; | |
375 | |
376 ctx->once = slcf->once; | |
377 | |
378 continue; | |
379 } | |
380 | |
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Sub filter: fixed subrequests handling.
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381 if (ctx->looked.len |
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382 && (ctx->buf->last_buf || ctx->buf->last_in_chain)) |
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383 { |
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384 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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385 if (cl == NULL) { |
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386 return NGX_ERROR; |
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387 } |
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388 |
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389 b = cl->buf; |
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390 |
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391 ngx_memzero(b, sizeof(ngx_buf_t)); |
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392 |
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393 b->pos = ctx->looked.data; |
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394 b->last = b->pos + ctx->looked.len; |
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395 b->memory = 1; |
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396 |
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397 *ctx->last_out = cl; |
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398 ctx->last_out = &cl->next; |
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399 |
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400 ctx->looked.len = 0; |
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401 } |
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402 |
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Sub filter: fixed subrequests handling.
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|
403 if (ctx->buf->last_buf || ctx->buf->flush || ctx->buf->sync |
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Sub filter: flush buffers handling.
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|
404 || ngx_buf_in_memory(ctx->buf)) |
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Sub filter: flush buffers handling.
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|
405 { |
1172 | 406 if (b == NULL) { |
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407 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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408 if (cl == NULL) { |
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409 return NGX_ERROR; |
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Sub filter: switched to ngx_chain_get_free_buf().
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410 } |
1172 | 411 |
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412 b = cl->buf; |
1172 | 413 |
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|
414 ngx_memzero(b, sizeof(ngx_buf_t)); |
1172 | 415 |
416 b->sync = 1; | |
417 | |
418 *ctx->last_out = cl; | |
419 ctx->last_out = &cl->next; | |
420 } | |
421 | |
422 b->last_buf = ctx->buf->last_buf; | |
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423 b->last_in_chain = ctx->buf->last_in_chain; |
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Sub filter: flush buffers handling.
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|
424 b->flush = ctx->buf->flush; |
1172 | 425 b->shadow = ctx->buf; |
426 | |
427 b->recycled = ctx->buf->recycled; | |
428 } | |
429 | |
430 ctx->buf = NULL; | |
431 | |
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diff
changeset
|
432 ctx->saved.len = ctx->looked.len; |
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|
433 ngx_memcpy(ctx->saved.data, ctx->looked.data, ctx->looked.len); |
1172 | 434 } |
435 | |
436 if (ctx->out == NULL && ctx->busy == NULL) { | |
437 return NGX_OK; | |
438 } | |
439 | |
440 return ngx_http_sub_output(r, ctx); | |
441 } | |
442 | |
443 | |
444 static ngx_int_t | |
445 ngx_http_sub_output(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx) | |
446 { | |
447 ngx_int_t rc; | |
448 ngx_buf_t *b; | |
449 ngx_chain_t *cl; | |
450 | |
451 #if 1 | |
452 b = NULL; | |
453 for (cl = ctx->out; cl; cl = cl->next) { | |
454 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
455 "sub out: %p %p", cl->buf, cl->buf->pos); | |
456 if (cl->buf == b) { | |
457 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
458 "the same buf was used in sub"); | |
459 ngx_debug_point(); | |
460 return NGX_ERROR; | |
461 } | |
462 b = cl->buf; | |
463 } | |
464 #endif | |
465 | |
466 rc = ngx_http_next_body_filter(r, ctx->out); | |
467 | |
468 if (ctx->busy == NULL) { | |
469 ctx->busy = ctx->out; | |
470 | |
471 } else { | |
472 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ } | |
473 cl->next = ctx->out; | |
474 } | |
475 | |
476 ctx->out = NULL; | |
477 ctx->last_out = &ctx->out; | |
478 | |
479 while (ctx->busy) { | |
480 | |
481 cl = ctx->busy; | |
482 b = cl->buf; | |
483 | |
484 if (ngx_buf_size(b) != 0) { | |
485 break; | |
486 } | |
487 | |
488 if (b->shadow) { | |
489 b->shadow->pos = b->shadow->last; | |
490 } | |
491 | |
492 ctx->busy = cl->next; | |
493 | |
494 if (ngx_buf_in_memory(b) || b->in_file) { | |
495 /* add data bufs only to the free buf chain */ | |
496 | |
497 cl->next = ctx->free; | |
498 ctx->free = cl; | |
499 } | |
500 } | |
501 | |
502 if (ctx->in || ctx->buf) { | |
503 r->buffered |= NGX_HTTP_SUB_BUFFERED; | |
504 | |
505 } else { | |
506 r->buffered &= ~NGX_HTTP_SUB_BUFFERED; | |
507 } | |
508 | |
509 return rc; | |
510 } | |
511 | |
512 | |
513 static ngx_int_t | |
514 ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx) | |
515 { | |
516 u_char *p, *last, *copy_end, ch, match; | |
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|
517 size_t looked, i; |
1172 | 518 ngx_http_sub_state_e state; |
519 | |
520 if (ctx->once) { | |
521 ctx->copy_start = ctx->pos; | |
522 ctx->copy_end = ctx->buf->last; | |
523 ctx->pos = ctx->buf->last; | |
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changeset
|
524 ctx->looked.len = 0; |
1172 | 525 |
526 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "once"); | |
527 | |
528 return NGX_AGAIN; | |
529 } | |
530 | |
531 state = ctx->state; | |
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|
532 looked = ctx->looked.len; |
1172 | 533 last = ctx->buf->last; |
534 copy_end = ctx->copy_end; | |
535 | |
536 for (p = ctx->pos; p < last; p++) { | |
537 | |
538 ch = *p; | |
539 ch = ngx_tolower(ch); | |
540 | |
541 if (state == sub_start_state) { | |
542 | |
543 /* the tight loop */ | |
544 | |
545 match = ctx->match.data[0]; | |
546 | |
547 for ( ;; ) { | |
548 if (ch == match) { | |
549 copy_end = p; | |
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changeset
|
550 ctx->looked.data[0] = *p; |
1172 | 551 looked = 1; |
552 state = sub_match_state; | |
553 | |
554 goto match_started; | |
555 } | |
556 | |
557 if (++p == last) { | |
558 break; | |
559 } | |
560 | |
561 ch = *p; | |
562 ch = ngx_tolower(ch); | |
563 } | |
564 | |
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diff
changeset
|
565 ctx->state = state; |
1172 | 566 ctx->pos = p; |
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changeset
|
567 ctx->looked.len = looked; |
1172 | 568 ctx->copy_end = p; |
569 | |
570 if (ctx->copy_start == NULL) { | |
571 ctx->copy_start = ctx->buf->pos; | |
572 } | |
573 | |
574 return NGX_AGAIN; | |
575 | |
576 match_started: | |
577 | |
578 continue; | |
579 } | |
580 | |
581 /* state == sub_match_state */ | |
582 | |
583 if (ch == ctx->match.data[looked]) { | |
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|
584 ctx->looked.data[looked] = *p; |
1172 | 585 looked++; |
586 | |
587 if (looked == ctx->match.len) { | |
1557
9d094e581587
*) add sub_filter parser fix similar to r1261 in SSI parser
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588 |
1172 | 589 ctx->state = sub_start_state; |
590 ctx->pos = p + 1; | |
3675
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591 ctx->looked.len = 0; |
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592 ctx->saved.len = 0; |
1172 | 593 ctx->copy_end = copy_end; |
594 | |
595 if (ctx->copy_start == NULL && copy_end) { | |
596 ctx->copy_start = ctx->buf->pos; | |
597 } | |
598 | |
599 return NGX_OK; | |
600 } | |
601 | |
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602 } else { |
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603 /* |
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604 * check if there is another partial match in previously |
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605 * matched substring to catch cases like "aab" in "aaab" |
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606 */ |
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607 |
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608 ctx->looked.data[looked] = *p; |
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609 looked++; |
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610 |
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611 for (i = 1; i < looked; i++) { |
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612 if (ngx_strncasecmp(ctx->looked.data + i, |
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613 ctx->match.data, looked - i) |
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614 == 0) |
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615 { |
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616 break; |
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617 } |
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618 } |
1172 | 619 |
5288
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620 if (i < looked) { |
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621 if (ctx->saved.len > i) { |
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622 ctx->saved.len = i; |
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623 } |
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624 |
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625 if ((size_t) (p + 1 - ctx->buf->pos) >= looked - i) { |
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626 copy_end = p + 1 - (looked - i); |
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627 } |
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628 |
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629 ngx_memmove(ctx->looked.data, ctx->looked.data + i, looked - i); |
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630 looked = looked - i; |
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631 |
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632 } else { |
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633 copy_end = p; |
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634 looked = 0; |
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635 state = sub_start_state; |
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636 } |
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637 |
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638 if (ctx->saved.len) { |
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639 p++; |
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640 goto out; |
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641 } |
1172 | 642 } |
643 } | |
644 | |
5288
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645 ctx->saved.len = 0; |
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646 |
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647 out: |
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648 |
1172 | 649 ctx->state = state; |
650 ctx->pos = p; | |
3675
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diff
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651 ctx->looked.len = looked; |
1172 | 652 |
653 ctx->copy_end = (state == sub_start_state) ? p : copy_end; | |
654 | |
655 if (ctx->copy_start == NULL && ctx->copy_end) { | |
656 ctx->copy_start = ctx->buf->pos; | |
657 } | |
658 | |
659 return NGX_AGAIN; | |
660 } | |
661 | |
662 | |
663 static char * | |
664 ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
665 { | |
666 ngx_http_sub_loc_conf_t *slcf = conf; | |
667 | |
2588
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diff
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668 ngx_str_t *value; |
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669 ngx_http_compile_complex_value_t ccv; |
1172 | 670 |
4947
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671 if (slcf->match.data) { |
1172 | 672 return "is duplicate"; |
673 } | |
674 | |
675 value = cf->args->elts; | |
676 | |
2135 | 677 ngx_strlow(value[1].data, value[1].data, value[1].len); |
1172 | 678 |
2135 | 679 slcf->match = value[1]; |
1172 | 680 |
2588
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parents:
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diff
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681 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
1172 | 682 |
2588
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diff
changeset
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683 ccv.cf = cf; |
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684 ccv.value = &value[2]; |
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parents:
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diff
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685 ccv.complex_value = &slcf->value; |
1172 | 686 |
2588
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parents:
2536
diff
changeset
|
687 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
1172 | 688 return NGX_CONF_ERROR; |
689 } | |
690 | |
691 return NGX_CONF_OK; | |
692 } | |
693 | |
694 | |
695 static void * | |
696 ngx_http_sub_create_conf(ngx_conf_t *cf) | |
697 { | |
698 ngx_http_sub_loc_conf_t *slcf; | |
699 | |
700 slcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_sub_loc_conf_t)); | |
701 if (slcf == NULL) { | |
2912
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Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
702 return NULL; |
1172 | 703 } |
704 | |
705 /* | |
706 * set by ngx_pcalloc(): | |
707 * | |
2166
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
2135
diff
changeset
|
708 * conf->match = { 0, NULL }; |
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diff
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|
709 * conf->types = { NULL }; |
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diff
changeset
|
710 * conf->types_keys = NULL; |
1172 | 711 */ |
712 | |
713 slcf->once = NGX_CONF_UNSET; | |
5229
4c1a604b0285
Sub filter: sub_filter_last_modified directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4947
diff
changeset
|
714 slcf->last_modified = NGX_CONF_UNSET; |
1172 | 715 |
716 return slcf; | |
717 } | |
718 | |
719 | |
720 static char * | |
721 ngx_http_sub_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
722 { | |
723 ngx_http_sub_loc_conf_t *prev = parent; | |
724 ngx_http_sub_loc_conf_t *conf = child; | |
725 | |
726 ngx_conf_merge_value(conf->once, prev->once, 1); | |
727 ngx_conf_merge_str_value(conf->match, prev->match, ""); | |
5229
4c1a604b0285
Sub filter: sub_filter_last_modified directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4947
diff
changeset
|
728 ngx_conf_merge_value(conf->last_modified, prev->last_modified, 0); |
1172 | 729 |
4947
4251e72b8bb4
Allow the complex value to be defined as an empty string.
Ruslan Ermilov <ru@nginx.com>
parents:
4746
diff
changeset
|
730 if (conf->value.value.data == NULL) { |
2588
a6954ce88b80
use complex values in add_header, auth_basic_user_file,
Igor Sysoev <igor@sysoev.ru>
parents:
2536
diff
changeset
|
731 conf->value = prev->value; |
1172 | 732 } |
733 | |
3372
6b8e5c882e47
support "*" in gzip_types, ssi_types, etc
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
734 if (ngx_http_merge_types(cf, &conf->types_keys, &conf->types, |
6b8e5c882e47
support "*" in gzip_types, ssi_types, etc
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
735 &prev->types_keys, &prev->types, |
2166
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
2135
diff
changeset
|
736 ngx_http_html_default_types) |
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
2135
diff
changeset
|
737 != NGX_OK) |
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
2135
diff
changeset
|
738 { |
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
739 return NGX_CONF_ERROR; |
1172 | 740 } |
741 | |
742 return NGX_CONF_OK; | |
743 } | |
744 | |
745 | |
746 static ngx_int_t | |
747 ngx_http_sub_filter_init(ngx_conf_t *cf) | |
748 { | |
749 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
750 ngx_http_top_header_filter = ngx_http_sub_header_filter; | |
751 | |
752 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
753 ngx_http_top_body_filter = ngx_http_sub_body_filter; | |
754 | |
755 return NGX_OK; | |
756 } |