Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_stub_status_module.c @ 5762:b522d5b137fd
SPDY: fix support for headers with multiple values.
Split SPDY header with multiple, NULL-separated values:
cookie: foo\0bar
into two separate HTTP headers with the same name:
cookie: foo
cookie: bar
Even though the logic for this behavior already existed
in the source code, it doesn't look that it ever worked
and SPDY streams with such headers were simply rejected.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
author | Piotr Sikora <piotr@cloudflare.com> |
---|---|
date | Tue, 08 Jul 2014 02:17:44 -0700 |
parents | 2cfc095a607a |
children | dc7c139fca21 |
rev | line source |
---|---|
577 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
577 | 5 */ |
6 | |
487 | 7 |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
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13 static ngx_int_t ngx_http_stub_status_variable(ngx_http_request_t *r, |
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14 ngx_http_variable_value_t *v, uintptr_t data); |
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15 static ngx_int_t ngx_http_stub_status_add_variables(ngx_conf_t *cf); |
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16 |
487 | 17 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, |
18 void *conf); | |
577 | 19 |
487 | 20 static ngx_command_t ngx_http_status_commands[] = { |
21 | |
22 { ngx_string("stub_status"), | |
23 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
24 ngx_http_set_status, | |
25 0, | |
26 0, | |
27 NULL }, | |
28 | |
29 ngx_null_command | |
577 | 30 }; |
487 | 31 |
32 | |
577 | 33 |
667 | 34 static ngx_http_module_t ngx_http_stub_status_module_ctx = { |
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35 ngx_http_stub_status_add_variables, /* preconfiguration */ |
509 | 36 NULL, /* postconfiguration */ |
487 | 37 |
38 NULL, /* create main configuration */ | |
39 NULL, /* init main configuration */ | |
577 | 40 |
487 | 41 NULL, /* create server configuration */ |
42 NULL, /* merge server configuration */ | |
577 | 43 |
487 | 44 NULL, /* create location configuration */ |
45 NULL /* merge location configuration */ | |
46 }; | |
47 | |
48 | |
49 ngx_module_t ngx_http_stub_status_module = { | |
509 | 50 NGX_MODULE_V1, |
487 | 51 &ngx_http_stub_status_module_ctx, /* module context */ |
52 ngx_http_status_commands, /* module directives */ | |
53 NGX_HTTP_MODULE, /* module type */ | |
541 | 54 NULL, /* init master */ |
487 | 55 NULL, /* init module */ |
541 | 56 NULL, /* init process */ |
57 NULL, /* init thread */ | |
58 NULL, /* exit thread */ | |
59 NULL, /* exit process */ | |
60 NULL, /* exit master */ | |
61 NGX_MODULE_V1_PADDING | |
487 | 62 }; |
63 | |
64 | |
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65 static ngx_http_variable_t ngx_http_stub_status_vars[] = { |
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66 |
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67 { ngx_string("connections_active"), NULL, ngx_http_stub_status_variable, |
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68 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
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69 |
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70 { ngx_string("connections_reading"), NULL, ngx_http_stub_status_variable, |
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71 1, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
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72 |
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73 { ngx_string("connections_writing"), NULL, ngx_http_stub_status_variable, |
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74 2, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
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75 |
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76 { ngx_string("connections_waiting"), NULL, ngx_http_stub_status_variable, |
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77 3, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
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78 |
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79 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
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80 }; |
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81 |
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82 |
487 | 83 static ngx_int_t ngx_http_status_handler(ngx_http_request_t *r) |
84 { | |
495 | 85 size_t size; |
86 ngx_int_t rc; | |
87 ngx_buf_t *b; | |
88 ngx_chain_t out; | |
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89 ngx_atomic_int_t ap, hn, ac, rq, rd, wr, wa; |
577 | 90 |
487 | 91 if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) { |
92 return NGX_HTTP_NOT_ALLOWED; | |
93 } | |
94 | |
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95 rc = ngx_http_discard_request_body(r); |
487 | 96 |
1374 | 97 if (rc != NGX_OK) { |
487 | 98 return rc; |
99 } | |
100 | |
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101 r->headers_out.content_type_len = sizeof("text/plain") - 1; |
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102 ngx_str_set(&r->headers_out.content_type, "text/plain"); |
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103 r->headers_out.content_type_lowcase = NULL; |
487 | 104 |
105 if (r->method == NGX_HTTP_HEAD) { | |
106 r->headers_out.status = NGX_HTTP_OK; | |
107 | |
108 rc = ngx_http_send_header(r); | |
109 | |
110 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
111 return rc; | |
112 } | |
113 } | |
114 | |
495 | 115 size = sizeof("Active connections: \n") + NGX_ATOMIC_T_LEN |
487 | 116 + sizeof("server accepts handled requests\n") - 1 |
495 | 117 + 6 + 3 * NGX_ATOMIC_T_LEN |
118 + sizeof("Reading: Writing: Waiting: \n") + 3 * NGX_ATOMIC_T_LEN; | |
487 | 119 |
501 | 120 b = ngx_create_temp_buf(r->pool, size); |
121 if (b == NULL) { | |
487 | 122 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
123 } | |
124 | |
125 out.buf = b; | |
126 out.next = NULL; | |
127 | |
128 ap = *ngx_stat_accepted; | |
495 | 129 hn = *ngx_stat_handled; |
487 | 130 ac = *ngx_stat_active; |
131 rq = *ngx_stat_requests; | |
132 rd = *ngx_stat_reading; | |
133 wr = *ngx_stat_writing; | |
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134 wa = *ngx_stat_waiting; |
487 | 135 |
509 | 136 b->last = ngx_sprintf(b->last, "Active connections: %uA \n", ac); |
487 | 137 |
138 b->last = ngx_cpymem(b->last, "server accepts handled requests\n", | |
139 sizeof("server accepts handled requests\n") - 1); | |
140 | |
509 | 141 b->last = ngx_sprintf(b->last, " %uA %uA %uA \n", ap, hn, rq); |
487 | 142 |
509 | 143 b->last = ngx_sprintf(b->last, "Reading: %uA Writing: %uA Waiting: %uA \n", |
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144 rd, wr, wa); |
487 | 145 |
146 r->headers_out.status = NGX_HTTP_OK; | |
147 r->headers_out.content_length_n = b->last - b->pos; | |
148 | |
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149 b->last_buf = (r == r->main) ? 1 : 0; |
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150 b->last_in_chain = 1; |
487 | 151 |
152 rc = ngx_http_send_header(r); | |
153 | |
154 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
155 return rc; | |
156 } | |
157 | |
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158 return ngx_http_output_filter(r, &out); |
487 | 159 } |
160 | |
161 | |
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162 static ngx_int_t |
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163 ngx_http_stub_status_variable(ngx_http_request_t *r, |
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164 ngx_http_variable_value_t *v, uintptr_t data) |
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165 { |
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166 u_char *p; |
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167 ngx_atomic_int_t value; |
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168 |
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169 p = ngx_pnalloc(r->pool, NGX_ATOMIC_T_LEN); |
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170 if (p == NULL) { |
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171 return NGX_ERROR; |
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172 } |
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173 |
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174 switch (data) { |
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175 case 0: |
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176 value = *ngx_stat_active; |
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177 break; |
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178 |
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179 case 1: |
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180 value = *ngx_stat_reading; |
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181 break; |
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182 |
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183 case 2: |
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184 value = *ngx_stat_writing; |
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185 break; |
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186 |
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187 case 3: |
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188 value = *ngx_stat_waiting; |
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189 break; |
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190 |
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191 /* suppress warning */ |
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192 default: |
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193 value = 0; |
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194 break; |
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195 } |
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196 |
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197 v->len = ngx_sprintf(p, "%uA", value) - p; |
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198 v->valid = 1; |
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199 v->no_cacheable = 0; |
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200 v->not_found = 0; |
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201 v->data = p; |
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202 |
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203 return NGX_OK; |
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204 } |
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205 |
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206 |
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207 static ngx_int_t |
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208 ngx_http_stub_status_add_variables(ngx_conf_t *cf) |
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209 { |
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210 ngx_http_variable_t *var, *v; |
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211 |
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212 for (v = ngx_http_stub_status_vars; v->name.len; v++) { |
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213 var = ngx_http_add_variable(cf, &v->name, v->flags); |
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214 if (var == NULL) { |
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215 return NGX_ERROR; |
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216 } |
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217 |
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218 var->get_handler = v->get_handler; |
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219 var->data = v->data; |
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220 } |
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221 |
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222 return NGX_OK; |
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223 } |
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224 |
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225 |
487 | 226 static char *ngx_http_set_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
227 { | |
228 ngx_http_core_loc_conf_t *clcf; | |
229 | |
230 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
231 clcf->handler = ngx_http_status_handler; | |
232 | |
233 return NGX_CONF_OK; | |
234 } |