Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_stub_status_module.c @ 8851:5f78174d1ac1 quic
QUIC: fixed output context restoring.
The cd8018bc81a5 fixed unintended send of non-padded initial packets,
but failed to restore context properly: only processed contexts need
to be restored. As a consequence, a packet number could be restored
from uninitialized value.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Wed, 09 Feb 2022 15:53:21 +0300 |
parents | 43a0a9e988be |
children |
rev | line source |
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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_handler(ngx_http_request_t *r); |
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14 static ngx_int_t ngx_http_stub_status_variable(ngx_http_request_t *r, |
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15 ngx_http_variable_value_t *v, uintptr_t data); |
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16 static ngx_int_t ngx_http_stub_status_add_variables(ngx_conf_t *cf); |
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17 static char *ngx_http_set_stub_status(ngx_conf_t *cf, ngx_command_t *cmd, |
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18 void *conf); |
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19 |
577 | 20 |
487 | 21 static ngx_command_t ngx_http_status_commands[] = { |
22 | |
23 { ngx_string("stub_status"), | |
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24 NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS|NGX_CONF_TAKE1, |
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25 ngx_http_set_stub_status, |
487 | 26 0, |
27 0, | |
28 NULL }, | |
29 | |
30 ngx_null_command | |
577 | 31 }; |
487 | 32 |
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_http_null_variable |
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80 }; |
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81 |
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82 |
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83 static ngx_int_t |
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84 ngx_http_stub_status_handler(ngx_http_request_t *r) |
487 | 85 { |
495 | 86 size_t size; |
87 ngx_int_t rc; | |
88 ngx_buf_t *b; | |
89 ngx_chain_t out; | |
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90 ngx_atomic_int_t ap, hn, ac, rq, rd, wr, wa; |
577 | 91 |
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92 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { |
487 | 93 return NGX_HTTP_NOT_ALLOWED; |
94 } | |
95 | |
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96 rc = ngx_http_discard_request_body(r); |
487 | 97 |
1374 | 98 if (rc != NGX_OK) { |
487 | 99 return rc; |
100 } | |
101 | |
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102 r->headers_out.content_type_len = sizeof("text/plain") - 1; |
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103 ngx_str_set(&r->headers_out.content_type, "text/plain"); |
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104 r->headers_out.content_type_lowcase = NULL; |
487 | 105 |
495 | 106 size = sizeof("Active connections: \n") + NGX_ATOMIC_T_LEN |
487 | 107 + sizeof("server accepts handled requests\n") - 1 |
495 | 108 + 6 + 3 * NGX_ATOMIC_T_LEN |
109 + sizeof("Reading: Writing: Waiting: \n") + 3 * NGX_ATOMIC_T_LEN; | |
487 | 110 |
501 | 111 b = ngx_create_temp_buf(r->pool, size); |
112 if (b == NULL) { | |
487 | 113 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
114 } | |
115 | |
116 out.buf = b; | |
117 out.next = NULL; | |
118 | |
119 ap = *ngx_stat_accepted; | |
495 | 120 hn = *ngx_stat_handled; |
487 | 121 ac = *ngx_stat_active; |
122 rq = *ngx_stat_requests; | |
123 rd = *ngx_stat_reading; | |
124 wr = *ngx_stat_writing; | |
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125 wa = *ngx_stat_waiting; |
487 | 126 |
509 | 127 b->last = ngx_sprintf(b->last, "Active connections: %uA \n", ac); |
487 | 128 |
129 b->last = ngx_cpymem(b->last, "server accepts handled requests\n", | |
130 sizeof("server accepts handled requests\n") - 1); | |
131 | |
509 | 132 b->last = ngx_sprintf(b->last, " %uA %uA %uA \n", ap, hn, rq); |
487 | 133 |
509 | 134 b->last = ngx_sprintf(b->last, "Reading: %uA Writing: %uA Waiting: %uA \n", |
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135 rd, wr, wa); |
487 | 136 |
137 r->headers_out.status = NGX_HTTP_OK; | |
138 r->headers_out.content_length_n = b->last - b->pos; | |
139 | |
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140 b->last_buf = (r == r->main) ? 1 : 0; |
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141 b->last_in_chain = 1; |
487 | 142 |
143 rc = ngx_http_send_header(r); | |
144 | |
145 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) { | |
146 return rc; | |
147 } | |
148 | |
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149 return ngx_http_output_filter(r, &out); |
487 | 150 } |
151 | |
152 | |
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153 static ngx_int_t |
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154 ngx_http_stub_status_variable(ngx_http_request_t *r, |
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155 ngx_http_variable_value_t *v, uintptr_t data) |
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156 { |
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157 u_char *p; |
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158 ngx_atomic_int_t value; |
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159 |
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160 p = ngx_pnalloc(r->pool, NGX_ATOMIC_T_LEN); |
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161 if (p == NULL) { |
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162 return NGX_ERROR; |
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163 } |
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164 |
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165 switch (data) { |
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166 case 0: |
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167 value = *ngx_stat_active; |
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168 break; |
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169 |
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170 case 1: |
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171 value = *ngx_stat_reading; |
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172 break; |
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173 |
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174 case 2: |
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175 value = *ngx_stat_writing; |
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176 break; |
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177 |
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178 case 3: |
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179 value = *ngx_stat_waiting; |
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180 break; |
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181 |
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182 /* suppress warning */ |
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183 default: |
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184 value = 0; |
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185 break; |
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186 } |
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187 |
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188 v->len = ngx_sprintf(p, "%uA", value) - p; |
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189 v->valid = 1; |
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190 v->no_cacheable = 0; |
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191 v->not_found = 0; |
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192 v->data = p; |
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193 |
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194 return NGX_OK; |
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195 } |
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196 |
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197 |
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198 static ngx_int_t |
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Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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199 ngx_http_stub_status_add_variables(ngx_conf_t *cf) |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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200 { |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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201 ngx_http_variable_t *var, *v; |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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202 |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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203 for (v = ngx_http_stub_status_vars; v->name.len; v++) { |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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204 var = ngx_http_add_variable(cf, &v->name, v->flags); |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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205 if (var == NULL) { |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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206 return NGX_ERROR; |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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207 } |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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208 |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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209 var->get_handler = v->get_handler; |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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210 var->data = v->data; |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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211 } |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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212 |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
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213 return NGX_OK; |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
changeset
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214 } |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
diff
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215 |
1c472e3b8c10
Introduced variables in ngx_http_stub_status module.
Andrey Belov <defan@nginx.com>
parents:
4611
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216 |
5783
dc7c139fca21
Status: indentation and style, no functional changes.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5497
diff
changeset
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217 static char * |
dc7c139fca21
Status: indentation and style, no functional changes.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5497
diff
changeset
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218 ngx_http_set_stub_status(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
487 | 219 { |
220 ngx_http_core_loc_conf_t *clcf; | |
221 | |
222 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
5783
dc7c139fca21
Status: indentation and style, no functional changes.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5497
diff
changeset
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223 clcf->handler = ngx_http_stub_status_handler; |
487 | 224 |
225 return NGX_CONF_OK; | |
226 } |