Mercurial > hg > nginx
annotate src/http/modules/ngx_http_sub_filter_module.c @ 5351:a2c772963b04
Referer: "server_names" parsing deferred to merge phase.
This allows to approach "server_name" values specified below the
"valid_referers" directive when used within the "server_names" parameter, e.g.:
server_name example.org;
valid_referers server_names;
server_name example.com;
As a bonus, this fixes bogus error with "server_names" specified several times.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Thu, 29 Aug 2013 22:35:27 +0400 |
parents | 102d7117ffb8 |
children | 9e9c1310d17c |
rev | line source |
---|---|
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 ngx_http_clear_etag(r); |
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179 |
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180 if (!slcf->last_modified) { |
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181 ngx_http_clear_last_modified(r); |
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182 } |
1172 | 183 } |
184 | |
185 return ngx_http_next_header_filter(r); | |
186 } | |
187 | |
188 | |
189 static ngx_int_t | |
190 ngx_http_sub_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
191 { | |
192 ngx_int_t rc; | |
193 ngx_buf_t *b; | |
194 ngx_chain_t *cl; | |
195 ngx_http_sub_ctx_t *ctx; | |
196 ngx_http_sub_loc_conf_t *slcf; | |
197 | |
198 ctx = ngx_http_get_module_ctx(r, ngx_http_sub_filter_module); | |
199 | |
200 if (ctx == NULL) { | |
201 return ngx_http_next_body_filter(r, in); | |
202 } | |
203 | |
204 if ((in == NULL | |
205 && ctx->buf == NULL | |
206 && ctx->in == NULL | |
207 && ctx->busy == NULL)) | |
208 { | |
209 return ngx_http_next_body_filter(r, in); | |
210 } | |
211 | |
212 if (ctx->once && (ctx->buf == NULL || ctx->in == NULL)) { | |
213 | |
214 if (ctx->busy) { | |
215 if (ngx_http_sub_output(r, ctx) == NGX_ERROR) { | |
216 return NGX_ERROR; | |
217 } | |
218 } | |
219 | |
220 return ngx_http_next_body_filter(r, in); | |
221 } | |
222 | |
223 /* add the incoming chain to the chain ctx->in */ | |
224 | |
225 if (in) { | |
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226 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { |
1172 | 227 return NGX_ERROR; |
228 } | |
229 } | |
230 | |
231 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
232 "http sub filter \"%V\"", &r->uri); | |
233 | |
234 while (ctx->in || ctx->buf) { | |
235 | |
3642 | 236 if (ctx->buf == NULL) { |
1172 | 237 ctx->buf = ctx->in->buf; |
238 ctx->in = ctx->in->next; | |
239 ctx->pos = ctx->buf->pos; | |
240 } | |
241 | |
242 if (ctx->state == sub_start_state) { | |
243 ctx->copy_start = ctx->pos; | |
244 ctx->copy_end = ctx->pos; | |
245 } | |
246 | |
247 b = NULL; | |
248 | |
249 while (ctx->pos < ctx->buf->last) { | |
250 | |
251 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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252 "saved: \"%V\" state: %d", &ctx->saved, ctx->state); |
1172 | 253 |
254 rc = ngx_http_sub_parse(r, ctx); | |
255 | |
256 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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257 "parse: %d, looked: \"%V\" %p-%p", |
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258 rc, &ctx->looked, ctx->copy_start, ctx->copy_end); |
1172 | 259 |
260 if (rc == NGX_ERROR) { | |
261 return rc; | |
262 } | |
263 | |
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264 if (ctx->saved.len) { |
1172 | 265 |
266 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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267 "saved: \"%V\"", &ctx->saved); |
1172 | 268 |
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269 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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270 if (cl == NULL) { |
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271 return NGX_ERROR; |
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272 } |
1172 | 273 |
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274 b = cl->buf; |
1172 | 275 |
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276 ngx_memzero(b, sizeof(ngx_buf_t)); |
1172 | 277 |
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278 b->pos = ngx_pnalloc(r->pool, ctx->saved.len); |
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279 if (b->pos == NULL) { |
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280 return NGX_ERROR; |
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281 } |
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282 |
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283 ngx_memcpy(b->pos, ctx->saved.data, ctx->saved.len); |
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284 b->last = b->pos + ctx->saved.len; |
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285 b->memory = 1; |
1172 | 286 |
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287 *ctx->last_out = cl; |
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288 ctx->last_out = &cl->next; |
1172 | 289 |
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290 ctx->saved.len = 0; |
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291 } |
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292 |
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293 if (ctx->copy_start != ctx->copy_end) { |
1172 | 294 |
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295 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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296 if (cl == NULL) { |
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297 return NGX_ERROR; |
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298 } |
1172 | 299 |
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300 b = cl->buf; |
1172 | 301 |
302 ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t)); | |
303 | |
304 b->pos = ctx->copy_start; | |
305 b->last = ctx->copy_end; | |
306 b->shadow = NULL; | |
307 b->last_buf = 0; | |
308 b->recycled = 0; | |
309 | |
310 if (b->in_file) { | |
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311 b->file_last = b->file_pos + (b->last - ctx->buf->pos); |
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312 b->file_pos += b->pos - ctx->buf->pos; |
1172 | 313 } |
314 | |
315 *ctx->last_out = cl; | |
316 ctx->last_out = &cl->next; | |
317 } | |
318 | |
319 if (ctx->state == sub_start_state) { | |
320 ctx->copy_start = ctx->pos; | |
321 ctx->copy_end = ctx->pos; | |
322 | |
323 } else { | |
324 ctx->copy_start = NULL; | |
325 ctx->copy_end = NULL; | |
326 } | |
327 | |
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328 if (ctx->looked.len > (size_t) (ctx->pos - ctx->buf->pos)) { |
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329 ctx->saved.len = ctx->looked.len - (ctx->pos - ctx->buf->pos); |
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330 ngx_memcpy(ctx->saved.data, ctx->looked.data, ctx->saved.len); |
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331 } |
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332 |
1172 | 333 if (rc == NGX_AGAIN) { |
334 continue; | |
335 } | |
336 | |
337 | |
338 /* rc == NGX_OK */ | |
339 | |
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340 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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341 if (cl == NULL) { |
1172 | 342 return NGX_ERROR; |
343 } | |
344 | |
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345 b = cl->buf; |
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346 |
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347 ngx_memzero(b, sizeof(ngx_buf_t)); |
1172 | 348 |
349 slcf = ngx_http_get_module_loc_conf(r, ngx_http_sub_filter_module); | |
350 | |
351 if (ctx->sub.data == NULL) { | |
352 | |
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353 if (ngx_http_complex_value(r, &slcf->value, &ctx->sub) |
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354 != NGX_OK) |
1172 | 355 { |
356 return NGX_ERROR; | |
357 } | |
358 } | |
359 | |
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360 if (ctx->sub.len) { |
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361 b->memory = 1; |
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362 b->pos = ctx->sub.data; |
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363 b->last = ctx->sub.data + ctx->sub.len; |
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364 |
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365 } else { |
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366 b->sync = 1; |
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367 } |
1172 | 368 |
369 *ctx->last_out = cl; | |
370 ctx->last_out = &cl->next; | |
371 | |
372 ctx->once = slcf->once; | |
373 | |
374 continue; | |
375 } | |
376 | |
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377 if (ctx->buf->last_buf && ctx->looked.len) { |
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378 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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379 if (cl == NULL) { |
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380 return NGX_ERROR; |
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381 } |
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382 |
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383 b = cl->buf; |
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384 |
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385 ngx_memzero(b, sizeof(ngx_buf_t)); |
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386 |
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387 b->pos = ctx->looked.data; |
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388 b->last = b->pos + ctx->looked.len; |
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389 b->memory = 1; |
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390 |
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391 *ctx->last_out = cl; |
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392 ctx->last_out = &cl->next; |
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393 |
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394 ctx->looked.len = 0; |
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395 } |
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396 |
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397 if (ctx->buf->last_buf || ctx->buf->flush |
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398 || ngx_buf_in_memory(ctx->buf)) |
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399 { |
1172 | 400 if (b == NULL) { |
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401 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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402 if (cl == NULL) { |
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403 return NGX_ERROR; |
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404 } |
1172 | 405 |
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406 b = cl->buf; |
1172 | 407 |
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408 ngx_memzero(b, sizeof(ngx_buf_t)); |
1172 | 409 |
410 b->sync = 1; | |
411 | |
412 *ctx->last_out = cl; | |
413 ctx->last_out = &cl->next; | |
414 } | |
415 | |
416 b->last_buf = ctx->buf->last_buf; | |
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417 b->flush = ctx->buf->flush; |
1172 | 418 b->shadow = ctx->buf; |
419 | |
420 b->recycled = ctx->buf->recycled; | |
421 } | |
422 | |
423 ctx->buf = NULL; | |
424 | |
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|
425 ctx->saved.len = ctx->looked.len; |
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426 ngx_memcpy(ctx->saved.data, ctx->looked.data, ctx->looked.len); |
1172 | 427 } |
428 | |
429 if (ctx->out == NULL && ctx->busy == NULL) { | |
430 return NGX_OK; | |
431 } | |
432 | |
433 return ngx_http_sub_output(r, ctx); | |
434 } | |
435 | |
436 | |
437 static ngx_int_t | |
438 ngx_http_sub_output(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx) | |
439 { | |
440 ngx_int_t rc; | |
441 ngx_buf_t *b; | |
442 ngx_chain_t *cl; | |
443 | |
444 #if 1 | |
445 b = NULL; | |
446 for (cl = ctx->out; cl; cl = cl->next) { | |
447 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
448 "sub out: %p %p", cl->buf, cl->buf->pos); | |
449 if (cl->buf == b) { | |
450 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
451 "the same buf was used in sub"); | |
452 ngx_debug_point(); | |
453 return NGX_ERROR; | |
454 } | |
455 b = cl->buf; | |
456 } | |
457 #endif | |
458 | |
459 rc = ngx_http_next_body_filter(r, ctx->out); | |
460 | |
461 if (ctx->busy == NULL) { | |
462 ctx->busy = ctx->out; | |
463 | |
464 } else { | |
465 for (cl = ctx->busy; cl->next; cl = cl->next) { /* void */ } | |
466 cl->next = ctx->out; | |
467 } | |
468 | |
469 ctx->out = NULL; | |
470 ctx->last_out = &ctx->out; | |
471 | |
472 while (ctx->busy) { | |
473 | |
474 cl = ctx->busy; | |
475 b = cl->buf; | |
476 | |
477 if (ngx_buf_size(b) != 0) { | |
478 break; | |
479 } | |
480 | |
481 if (b->shadow) { | |
482 b->shadow->pos = b->shadow->last; | |
483 } | |
484 | |
485 ctx->busy = cl->next; | |
486 | |
487 if (ngx_buf_in_memory(b) || b->in_file) { | |
488 /* add data bufs only to the free buf chain */ | |
489 | |
490 cl->next = ctx->free; | |
491 ctx->free = cl; | |
492 } | |
493 } | |
494 | |
495 if (ctx->in || ctx->buf) { | |
496 r->buffered |= NGX_HTTP_SUB_BUFFERED; | |
497 | |
498 } else { | |
499 r->buffered &= ~NGX_HTTP_SUB_BUFFERED; | |
500 } | |
501 | |
502 return rc; | |
503 } | |
504 | |
505 | |
506 static ngx_int_t | |
507 ngx_http_sub_parse(ngx_http_request_t *r, ngx_http_sub_ctx_t *ctx) | |
508 { | |
509 u_char *p, *last, *copy_end, ch, match; | |
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510 size_t looked, i; |
1172 | 511 ngx_http_sub_state_e state; |
512 | |
513 if (ctx->once) { | |
514 ctx->copy_start = ctx->pos; | |
515 ctx->copy_end = ctx->buf->last; | |
516 ctx->pos = ctx->buf->last; | |
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|
517 ctx->looked.len = 0; |
1172 | 518 |
519 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "once"); | |
520 | |
521 return NGX_AGAIN; | |
522 } | |
523 | |
524 state = ctx->state; | |
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|
525 looked = ctx->looked.len; |
1172 | 526 last = ctx->buf->last; |
527 copy_end = ctx->copy_end; | |
528 | |
529 for (p = ctx->pos; p < last; p++) { | |
530 | |
531 ch = *p; | |
532 ch = ngx_tolower(ch); | |
533 | |
534 if (state == sub_start_state) { | |
535 | |
536 /* the tight loop */ | |
537 | |
538 match = ctx->match.data[0]; | |
539 | |
540 for ( ;; ) { | |
541 if (ch == match) { | |
542 copy_end = p; | |
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|
543 ctx->looked.data[0] = *p; |
1172 | 544 looked = 1; |
545 state = sub_match_state; | |
546 | |
547 goto match_started; | |
548 } | |
549 | |
550 if (++p == last) { | |
551 break; | |
552 } | |
553 | |
554 ch = *p; | |
555 ch = ngx_tolower(ch); | |
556 } | |
557 | |
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558 ctx->state = state; |
1172 | 559 ctx->pos = p; |
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560 ctx->looked.len = looked; |
1172 | 561 ctx->copy_end = p; |
562 | |
563 if (ctx->copy_start == NULL) { | |
564 ctx->copy_start = ctx->buf->pos; | |
565 } | |
566 | |
567 return NGX_AGAIN; | |
568 | |
569 match_started: | |
570 | |
571 continue; | |
572 } | |
573 | |
574 /* state == sub_match_state */ | |
575 | |
576 if (ch == ctx->match.data[looked]) { | |
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577 ctx->looked.data[looked] = *p; |
1172 | 578 looked++; |
579 | |
580 if (looked == ctx->match.len) { | |
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|
581 |
1172 | 582 ctx->state = sub_start_state; |
583 ctx->pos = p + 1; | |
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|
584 ctx->looked.len = 0; |
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|
585 ctx->saved.len = 0; |
1172 | 586 ctx->copy_end = copy_end; |
587 | |
588 if (ctx->copy_start == NULL && copy_end) { | |
589 ctx->copy_start = ctx->buf->pos; | |
590 } | |
591 | |
592 return NGX_OK; | |
593 } | |
594 | |
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595 } else { |
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596 /* |
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597 * check if there is another partial match in previously |
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598 * matched substring to catch cases like "aab" in "aaab" |
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599 */ |
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600 |
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601 ctx->looked.data[looked] = *p; |
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602 looked++; |
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603 |
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604 for (i = 1; i < looked; i++) { |
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605 if (ngx_strncasecmp(ctx->looked.data + i, |
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606 ctx->match.data, looked - i) |
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607 == 0) |
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608 { |
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609 break; |
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610 } |
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611 } |
1172 | 612 |
5288
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613 if (i < looked) { |
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614 if (ctx->saved.len > i) { |
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615 ctx->saved.len = i; |
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616 } |
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617 |
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618 if ((size_t) (p + 1 - ctx->buf->pos) >= looked - i) { |
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619 copy_end = p + 1 - (looked - i); |
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620 } |
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621 |
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622 ngx_memmove(ctx->looked.data, ctx->looked.data + i, looked - i); |
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623 looked = looked - i; |
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624 |
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625 } else { |
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626 copy_end = p; |
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627 looked = 0; |
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628 state = sub_start_state; |
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629 } |
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|
630 |
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631 if (ctx->saved.len) { |
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632 p++; |
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633 goto out; |
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634 } |
1172 | 635 } |
636 } | |
637 | |
5288
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638 ctx->saved.len = 0; |
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639 |
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|
640 out: |
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|
641 |
1172 | 642 ctx->state = state; |
643 ctx->pos = p; | |
3675
08d7165b6be1
fix case of partially matched patterns on buffer border in sub_filter
Igor Sysoev <igor@sysoev.ru>
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diff
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644 ctx->looked.len = looked; |
1172 | 645 |
646 ctx->copy_end = (state == sub_start_state) ? p : copy_end; | |
647 | |
648 if (ctx->copy_start == NULL && ctx->copy_end) { | |
649 ctx->copy_start = ctx->buf->pos; | |
650 } | |
651 | |
652 return NGX_AGAIN; | |
653 } | |
654 | |
655 | |
656 static char * | |
657 ngx_http_sub_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
658 { | |
659 ngx_http_sub_loc_conf_t *slcf = conf; | |
660 | |
2588
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661 ngx_str_t *value; |
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662 ngx_http_compile_complex_value_t ccv; |
1172 | 663 |
4947
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Allow the complex value to be defined as an empty string.
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664 if (slcf->match.data) { |
1172 | 665 return "is duplicate"; |
666 } | |
667 | |
668 value = cf->args->elts; | |
669 | |
2135 | 670 ngx_strlow(value[1].data, value[1].data, value[1].len); |
1172 | 671 |
2135 | 672 slcf->match = value[1]; |
1172 | 673 |
2588
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|
674 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
1172 | 675 |
2588
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676 ccv.cf = cf; |
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677 ccv.value = &value[2]; |
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diff
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|
678 ccv.complex_value = &slcf->value; |
1172 | 679 |
2588
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diff
changeset
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680 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
1172 | 681 return NGX_CONF_ERROR; |
682 } | |
683 | |
684 return NGX_CONF_OK; | |
685 } | |
686 | |
687 | |
688 static void * | |
689 ngx_http_sub_create_conf(ngx_conf_t *cf) | |
690 { | |
691 ngx_http_sub_loc_conf_t *slcf; | |
692 | |
693 slcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_sub_loc_conf_t)); | |
694 if (slcf == NULL) { | |
2912
c7d57b539248
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diff
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695 return NULL; |
1172 | 696 } |
697 | |
698 /* | |
699 * set by ngx_pcalloc(): | |
700 * | |
2166
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diff
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701 * conf->match = { 0, NULL }; |
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702 * conf->types = { NULL }; |
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diff
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703 * conf->types_keys = NULL; |
1172 | 704 */ |
705 | |
706 slcf->once = NGX_CONF_UNSET; | |
5229
4c1a604b0285
Sub filter: sub_filter_last_modified directive.
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diff
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707 slcf->last_modified = NGX_CONF_UNSET; |
1172 | 708 |
709 return slcf; | |
710 } | |
711 | |
712 | |
713 static char * | |
714 ngx_http_sub_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
715 { | |
716 ngx_http_sub_loc_conf_t *prev = parent; | |
717 ngx_http_sub_loc_conf_t *conf = child; | |
718 | |
719 ngx_conf_merge_value(conf->once, prev->once, 1); | |
720 ngx_conf_merge_str_value(conf->match, prev->match, ""); | |
5229
4c1a604b0285
Sub filter: sub_filter_last_modified directive.
Maxim Dounin <mdounin@mdounin.ru>
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diff
changeset
|
721 ngx_conf_merge_value(conf->last_modified, prev->last_modified, 0); |
1172 | 722 |
4947
4251e72b8bb4
Allow the complex value to be defined as an empty string.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
723 if (conf->value.value.data == NULL) { |
2588
a6954ce88b80
use complex values in add_header, auth_basic_user_file,
Igor Sysoev <igor@sysoev.ru>
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2536
diff
changeset
|
724 conf->value = prev->value; |
1172 | 725 } |
726 | |
3372
6b8e5c882e47
support "*" in gzip_types, ssi_types, etc
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
727 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
|
728 &prev->types_keys, &prev->types, |
2166
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use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
2135
diff
changeset
|
729 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
|
730 != NGX_OK) |
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
parents:
2135
diff
changeset
|
731 { |
723df5089c05
use hash in gzip_types, ssi_types, and sub_filter_types
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
732 return NGX_CONF_ERROR; |
1172 | 733 } |
734 | |
735 return NGX_CONF_OK; | |
736 } | |
737 | |
738 | |
739 static ngx_int_t | |
740 ngx_http_sub_filter_init(ngx_conf_t *cf) | |
741 { | |
742 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
743 ngx_http_top_header_filter = ngx_http_sub_header_filter; | |
744 | |
745 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
746 ngx_http_top_body_filter = ngx_http_sub_body_filter; | |
747 | |
748 return NGX_OK; | |
749 } |