Mercurial > hg > nginx
annotate src/http/modules/ngx_http_addition_filter_module.c @ 2223:005fc65f7ce7
style fix: remove tabs and trailing spaces
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 01 Sep 2008 14:05:20 +0000 |
parents | 2cdefc40cabd |
children | 87b8c44906b5 |
rev | line source |
---|---|
629 | 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 | |
12 typedef struct { | |
2167 | 13 ngx_str_t before_body; |
14 ngx_str_t after_body; | |
15 | |
16 ngx_hash_t types; | |
17 ngx_array_t *types_keys; | |
629 | 18 } ngx_http_addition_conf_t; |
19 | |
20 | |
21 typedef struct { | |
2167 | 22 ngx_uint_t before_body_sent; |
629 | 23 } ngx_http_addition_ctx_t; |
24 | |
25 | |
26 static void *ngx_http_addition_create_conf(ngx_conf_t *cf); | |
27 static char *ngx_http_addition_merge_conf(ngx_conf_t *cf, void *parent, | |
28 void *child); | |
681 | 29 static ngx_int_t ngx_http_addition_filter_init(ngx_conf_t *cf); |
629 | 30 |
31 | |
32 static ngx_command_t ngx_http_addition_commands[] = { | |
33 | |
34 { ngx_string("add_before_body"), | |
35 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
36 ngx_conf_set_str_slot, | |
37 NGX_HTTP_LOC_CONF_OFFSET, | |
38 offsetof(ngx_http_addition_conf_t, before_body), | |
39 NULL }, | |
40 | |
41 { ngx_string("add_after_body"), | |
42 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
43 ngx_conf_set_str_slot, | |
44 NGX_HTTP_LOC_CONF_OFFSET, | |
45 offsetof(ngx_http_addition_conf_t, after_body), | |
46 NULL }, | |
47 | |
2167 | 48 { ngx_string("addtion_types"), |
49 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
50 ngx_http_types_slot, | |
51 NGX_HTTP_LOC_CONF_OFFSET, | |
52 offsetof(ngx_http_addition_conf_t, types_keys), | |
53 &ngx_http_html_default_types[0] }, | |
54 | |
629 | 55 ngx_null_command |
56 }; | |
57 | |
58 | |
59 static ngx_http_module_t ngx_http_addition_filter_module_ctx = { | |
60 NULL, /* preconfiguration */ | |
681 | 61 ngx_http_addition_filter_init, /* postconfiguration */ |
629 | 62 |
63 NULL, /* create main configuration */ | |
64 NULL, /* init main configuration */ | |
65 | |
66 NULL, /* create server configuration */ | |
67 NULL, /* merge server configuration */ | |
68 | |
69 ngx_http_addition_create_conf, /* create location configuration */ | |
70 ngx_http_addition_merge_conf /* merge location configuration */ | |
71 }; | |
72 | |
73 | |
74 ngx_module_t ngx_http_addition_filter_module = { | |
75 NGX_MODULE_V1, | |
76 &ngx_http_addition_filter_module_ctx, /* module context */ | |
77 ngx_http_addition_commands, /* module directives */ | |
78 NGX_HTTP_MODULE, /* module type */ | |
79 NULL, /* init master */ | |
681 | 80 NULL, /* init module */ |
629 | 81 NULL, /* init process */ |
82 NULL, /* init thread */ | |
83 NULL, /* exit thread */ | |
84 NULL, /* exit process */ | |
85 NULL, /* exit master */ | |
86 NGX_MODULE_V1_PADDING | |
87 }; | |
88 | |
89 | |
90 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
91 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; | |
92 | |
93 | |
94 static ngx_int_t | |
95 ngx_http_addition_header_filter(ngx_http_request_t *r) | |
96 { | |
97 ngx_http_addition_ctx_t *ctx; | |
98 ngx_http_addition_conf_t *conf; | |
99 | |
2167 | 100 if (r->headers_out.status != NGX_HTTP_OK || r != r->main) { |
629 | 101 return ngx_http_next_header_filter(r); |
102 } | |
103 | |
631 | 104 conf = ngx_http_get_module_loc_conf(r, ngx_http_addition_filter_module); |
105 | |
106 if (conf->before_body.len == 0 && conf->after_body.len == 0) { | |
107 return ngx_http_next_header_filter(r); | |
108 } | |
109 | |
2167 | 110 if (ngx_http_test_content_type(r, &conf->types) == NULL) { |
629 | 111 return ngx_http_next_header_filter(r); |
112 } | |
113 | |
114 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_addition_ctx_t)); | |
115 if (ctx == NULL) { | |
116 return NGX_ERROR; | |
117 } | |
118 | |
119 ngx_http_set_ctx(r, ctx, ngx_http_addition_filter_module); | |
120 | |
121 ngx_http_clear_content_length(r); | |
122 ngx_http_clear_accept_ranges(r); | |
123 | |
124 return ngx_http_next_header_filter(r); | |
125 } | |
126 | |
127 | |
128 static ngx_int_t | |
129 ngx_http_addition_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
130 { | |
131 ngx_int_t rc; | |
132 ngx_uint_t last; | |
133 ngx_chain_t *cl; | |
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134 ngx_http_request_t *sr; |
629 | 135 ngx_http_addition_ctx_t *ctx; |
136 ngx_http_addition_conf_t *conf; | |
137 | |
138 if (in == NULL || r->header_only) { | |
139 return ngx_http_next_body_filter(r, in); | |
140 } | |
141 | |
142 ctx = ngx_http_get_module_ctx(r, ngx_http_addition_filter_module); | |
143 | |
144 if (ctx == NULL) { | |
145 return ngx_http_next_body_filter(r, in); | |
146 } | |
147 | |
148 conf = ngx_http_get_module_loc_conf(r, ngx_http_addition_filter_module); | |
149 | |
150 if (!ctx->before_body_sent) { | |
151 ctx->before_body_sent = 1; | |
152 | |
153 if (conf->before_body.len) { | |
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154 rc = ngx_http_subrequest(r, &conf->before_body, NULL, &sr, NULL, 0); |
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155 |
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156 if (rc == NGX_ERROR || rc == NGX_DONE) { |
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157 return rc; |
629 | 158 } |
159 } | |
160 } | |
161 | |
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162 if (conf->after_body.len == 0) { |
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163 ngx_http_set_ctx(r, NULL, ngx_http_addition_filter_module); |
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164 return ngx_http_next_body_filter(r, in); |
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165 } |
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166 |
629 | 167 last = 0; |
168 | |
169 for (cl = in; cl; cl = cl->next) { | |
170 if (cl->buf->last_buf) { | |
171 cl->buf->last_buf = 0; | |
631 | 172 cl->buf->sync = 1; |
629 | 173 last = 1; |
174 } | |
175 } | |
176 | |
177 rc = ngx_http_next_body_filter(r, in); | |
178 | |
631 | 179 if (rc == NGX_ERROR || !last || conf->after_body.len == 0) { |
629 | 180 return rc; |
181 } | |
182 | |
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183 rc = ngx_http_subrequest(r, &conf->after_body, NULL, &sr, NULL, 0); |
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184 |
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185 if (rc == NGX_ERROR || rc == NGX_DONE) { |
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186 return rc; |
629 | 187 } |
188 | |
631 | 189 ngx_http_set_ctx(r, NULL, ngx_http_addition_filter_module); |
629 | 190 |
191 return ngx_http_send_special(r, NGX_HTTP_LAST); | |
192 } | |
193 | |
194 | |
195 static ngx_int_t | |
681 | 196 ngx_http_addition_filter_init(ngx_conf_t *cf) |
629 | 197 { |
198 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
199 ngx_http_top_header_filter = ngx_http_addition_header_filter; | |
200 | |
201 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
202 ngx_http_top_body_filter = ngx_http_addition_body_filter; | |
203 | |
204 return NGX_OK; | |
205 } | |
206 | |
207 | |
208 static void * | |
209 ngx_http_addition_create_conf(ngx_conf_t *cf) | |
210 { | |
211 ngx_http_addition_conf_t *conf; | |
212 | |
213 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_addition_conf_t)); | |
214 if (conf == NULL) { | |
215 return NGX_CONF_ERROR; | |
216 } | |
217 | |
218 /* | |
219 * set by ngx_pcalloc(): | |
220 * | |
2167 | 221 * conf->before_body = { 0, NULL }; |
222 * conf->after_body = { 0, NULL }; | |
223 * conf->types = { NULL }; | |
224 * conf->types_keys = NULL; | |
629 | 225 */ |
226 | |
227 return conf; | |
228 } | |
229 | |
230 | |
231 static char * | |
232 ngx_http_addition_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
233 { | |
234 ngx_http_addition_conf_t *prev = parent; | |
235 ngx_http_addition_conf_t *conf = child; | |
236 | |
237 ngx_conf_merge_str_value(conf->before_body, prev->before_body, ""); | |
238 ngx_conf_merge_str_value(conf->after_body, prev->after_body, ""); | |
239 | |
2167 | 240 if (ngx_http_merge_types(cf, conf->types_keys, &conf->types, |
241 prev->types_keys, &prev->types, | |
242 ngx_http_html_default_types) | |
243 != NGX_OK) | |
244 { | |
245 return NGX_CONF_ERROR; | |
246 } | |
247 | |
629 | 248 return NGX_CONF_OK; |
249 } |