Mercurial > hg > nginx
annotate src/http/modules/ngx_http_secure_link_module.c @ 4034:e2c075e774b6
Cache size accounting fix: actual cache size on disk was less than
needed by sum of sizes of files loaded by worker processes themselves
while cache loader was running.
The bug has been introduced in r3900.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 25 Aug 2011 17:29:34 +0000 |
| parents | 0a84dc5f5613 |
| children | d620f497c50f |
| rev | line source |
|---|---|
| 2260 | 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 #include <ngx_md5.h> | |
| 11 | |
| 12 | |
| 13 typedef struct { | |
|
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14 ngx_http_complex_value_t *variable; |
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15 ngx_http_complex_value_t *md5; |
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16 ngx_str_t secret; |
| 2260 | 17 } ngx_http_secure_link_conf_t; |
| 18 | |
| 19 | |
|
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20 typedef struct { |
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21 ngx_str_t expires; |
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22 } ngx_http_secure_link_ctx_t; |
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23 |
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24 |
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25 static ngx_int_t ngx_http_secure_link_old_variable(ngx_http_request_t *r, |
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26 ngx_http_secure_link_conf_t *conf, ngx_http_variable_value_t *v, |
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27 uintptr_t data); |
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28 static ngx_int_t ngx_http_secure_link_expires_variable(ngx_http_request_t *r, |
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29 ngx_http_variable_value_t *v, uintptr_t data); |
| 2260 | 30 static void *ngx_http_secure_link_create_conf(ngx_conf_t *cf); |
| 31 static char *ngx_http_secure_link_merge_conf(ngx_conf_t *cf, void *parent, | |
| 32 void *child); | |
| 33 static ngx_int_t ngx_http_secure_link_add_variables(ngx_conf_t *cf); | |
| 34 | |
| 35 | |
| 36 static ngx_command_t ngx_http_secure_link_commands[] = { | |
| 37 | |
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38 { ngx_string("secure_link"), |
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39 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 3761 | 40 ngx_http_set_complex_value_slot, |
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41 NGX_HTTP_LOC_CONF_OFFSET, |
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42 offsetof(ngx_http_secure_link_conf_t, variable), |
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43 NULL }, |
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44 |
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45 { ngx_string("secure_link_md5"), |
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46 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 3761 | 47 ngx_http_set_complex_value_slot, |
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48 NGX_HTTP_LOC_CONF_OFFSET, |
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49 offsetof(ngx_http_secure_link_conf_t, md5), |
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50 NULL }, |
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51 |
| 2260 | 52 { ngx_string("secure_link_secret"), |
| 53 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 54 ngx_conf_set_str_slot, | |
| 55 NGX_HTTP_LOC_CONF_OFFSET, | |
| 56 offsetof(ngx_http_secure_link_conf_t, secret), | |
| 57 NULL }, | |
| 58 | |
| 59 ngx_null_command | |
| 60 }; | |
| 61 | |
| 62 | |
| 63 static ngx_http_module_t ngx_http_secure_link_module_ctx = { | |
| 64 ngx_http_secure_link_add_variables, /* preconfiguration */ | |
| 65 NULL, /* postconfiguration */ | |
| 66 | |
| 67 NULL, /* create main configuration */ | |
| 68 NULL, /* init main configuration */ | |
| 69 | |
| 70 NULL, /* create server configuration */ | |
| 71 NULL, /* merge server configuration */ | |
| 72 | |
| 73 ngx_http_secure_link_create_conf, /* create location configuration */ | |
| 74 ngx_http_secure_link_merge_conf /* merge location configuration */ | |
| 75 }; | |
| 76 | |
| 77 | |
| 78 ngx_module_t ngx_http_secure_link_module = { | |
| 79 NGX_MODULE_V1, | |
| 80 &ngx_http_secure_link_module_ctx, /* module context */ | |
| 81 ngx_http_secure_link_commands, /* module directives */ | |
| 82 NGX_HTTP_MODULE, /* module type */ | |
| 83 NULL, /* init master */ | |
| 84 NULL, /* init module */ | |
| 85 NULL, /* init process */ | |
| 86 NULL, /* init thread */ | |
| 87 NULL, /* exit thread */ | |
| 88 NULL, /* exit process */ | |
| 89 NULL, /* exit master */ | |
| 90 NGX_MODULE_V1_PADDING | |
| 91 }; | |
| 92 | |
| 93 | |
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94 static ngx_str_t ngx_http_secure_link_name = ngx_string("secure_link"); |
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95 static ngx_str_t ngx_http_secure_link_expires_name = |
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96 ngx_string("secure_link_expires"); |
| 2260 | 97 |
| 98 | |
| 99 static ngx_int_t | |
| 100 ngx_http_secure_link_variable(ngx_http_request_t *r, | |
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101 ngx_http_variable_value_t *v, uintptr_t data) |
| 2260 | 102 { |
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103 u_char *p, *last; |
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104 ngx_str_t val, hash; |
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105 time_t expires; |
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106 ngx_md5_t md5; |
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107 ngx_http_secure_link_ctx_t *ctx; |
| 2260 | 108 ngx_http_secure_link_conf_t *conf; |
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109 u_char hash_buf[16], md5_buf[16]; |
| 2260 | 110 |
| 111 conf = ngx_http_get_module_loc_conf(r, ngx_http_secure_link_module); | |
| 112 | |
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113 if (conf->secret.len) { |
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114 return ngx_http_secure_link_old_variable(r, conf, v, data); |
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115 } |
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116 |
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117 if (conf->variable == NULL || conf->md5 == NULL) { |
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118 goto not_found; |
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119 } |
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120 |
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121 if (ngx_http_complex_value(r, conf->variable, &val) != NGX_OK) { |
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122 return NGX_ERROR; |
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123 } |
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124 |
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125 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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126 "secure link: \"%V\"", &val); |
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127 |
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128 last = val.data + val.len; |
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129 |
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130 p = ngx_strlchr(val.data, last, ','); |
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131 expires = 0; |
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132 |
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133 if (p) { |
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134 val.len = p++ - val.data; |
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135 |
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136 expires = ngx_atotm(p, last - p); |
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137 if (expires <= 0) { |
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138 goto not_found; |
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139 } |
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140 |
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141 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_secure_link_ctx_t)); |
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142 if (ctx == NULL) { |
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143 return NGX_ERROR; |
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144 } |
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145 |
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146 ngx_http_set_ctx(r, ctx, ngx_http_secure_link_module); |
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147 |
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148 ctx->expires.len = last - p; |
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149 ctx->expires.data = p; |
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150 } |
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151 |
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152 if (val.len > 24) { |
| 2260 | 153 goto not_found; |
| 154 } | |
| 155 | |
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156 hash.len = 16; |
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157 hash.data = hash_buf; |
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158 |
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159 if (ngx_decode_base64url(&hash, &val) != NGX_OK) { |
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160 goto not_found; |
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161 } |
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162 |
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163 if (hash.len != 16) { |
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164 goto not_found; |
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165 } |
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166 |
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167 if (ngx_http_complex_value(r, conf->md5, &val) != NGX_OK) { |
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168 return NGX_ERROR; |
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169 } |
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170 |
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171 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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172 "secure link md5: \"%V\"", &val); |
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173 |
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174 ngx_md5_init(&md5); |
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175 ngx_md5_update(&md5, val.data, val.len); |
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176 ngx_md5_final(md5_buf, &md5); |
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177 |
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178 if (ngx_memcmp(hash_buf, md5_buf, 16) != 0) { |
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179 goto not_found; |
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180 } |
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181 |
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182 v->data = (u_char *) ((expires && expires < ngx_time()) ? "0" : "1"); |
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183 v->len = 1; |
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184 v->valid = 1; |
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185 v->no_cacheable = 0; |
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186 v->not_found = 0; |
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187 |
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188 return NGX_OK; |
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189 |
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190 not_found: |
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191 |
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192 v->not_found = 1; |
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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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199 ngx_http_secure_link_old_variable(ngx_http_request_t *r, |
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200 ngx_http_secure_link_conf_t *conf, ngx_http_variable_value_t *v, |
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201 uintptr_t data) |
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202 { |
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203 u_char *p, *start, *end, *last; |
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204 size_t len; |
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205 ngx_int_t n; |
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206 ngx_uint_t i; |
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207 ngx_md5_t md5; |
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208 u_char hash[16]; |
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209 |
| 2260 | 210 p = &r->unparsed_uri.data[1]; |
| 211 last = r->unparsed_uri.data + r->unparsed_uri.len; | |
| 212 | |
| 213 while (p < last) { | |
| 214 if (*p++ == '/') { | |
| 215 start = p; | |
| 216 goto md5_start; | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 goto not_found; | |
| 221 | |
| 222 md5_start: | |
| 223 | |
| 224 while (p < last) { | |
| 225 if (*p++ == '/') { | |
| 226 end = p - 1; | |
| 227 goto url_start; | |
| 228 } | |
| 229 } | |
| 230 | |
| 231 goto not_found; | |
| 232 | |
| 233 url_start: | |
| 234 | |
| 235 len = last - p; | |
| 236 | |
| 2279 | 237 if (end - start != 32 || len == 0) { |
| 2260 | 238 goto not_found; |
| 239 } | |
| 240 | |
| 241 ngx_md5_init(&md5); | |
| 242 ngx_md5_update(&md5, p, len); | |
| 243 ngx_md5_update(&md5, conf->secret.data, conf->secret.len); | |
| 244 ngx_md5_final(hash, &md5); | |
| 245 | |
| 246 for (i = 0; i < 16; i++) { | |
| 247 n = ngx_hextoi(&start[2 * i], 2); | |
| 248 if (n == NGX_ERROR || n != hash[i]) { | |
| 249 goto not_found; | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 v->len = len; | |
| 254 v->valid = 1; | |
| 255 v->no_cacheable = 0; | |
| 256 v->not_found = 0; | |
| 257 v->data = p; | |
| 258 | |
| 259 return NGX_OK; | |
| 260 | |
| 261 not_found: | |
| 262 | |
| 263 v->not_found = 1; | |
| 264 | |
| 265 return NGX_OK; | |
| 266 } | |
| 267 | |
| 268 | |
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269 static ngx_int_t |
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270 ngx_http_secure_link_expires_variable(ngx_http_request_t *r, |
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271 ngx_http_variable_value_t *v, uintptr_t data) |
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272 { |
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273 ngx_http_secure_link_ctx_t *ctx; |
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274 |
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275 ctx = ngx_http_get_module_ctx(r, ngx_http_secure_link_module); |
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276 |
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277 if (ctx) { |
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278 v->len = ctx->expires.len; |
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279 v->valid = 1; |
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280 v->no_cacheable = 0; |
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281 v->not_found = 0; |
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282 v->data = ctx->expires.data; |
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283 |
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284 } else { |
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285 v->not_found = 1; |
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286 } |
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287 |
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288 return NGX_OK; |
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289 } |
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290 |
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291 |
| 2260 | 292 static void * |
| 293 ngx_http_secure_link_create_conf(ngx_conf_t *cf) | |
| 294 { | |
| 295 ngx_http_secure_link_conf_t *conf; | |
| 296 | |
| 297 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_secure_link_conf_t)); | |
| 298 if (conf == NULL) { | |
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299 return NULL; |
| 2260 | 300 } |
| 301 | |
| 302 /* | |
| 303 * set by ngx_pcalloc(): | |
| 304 * | |
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305 * conf->variable = NULL; |
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306 * conf->md5 = NULL; |
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307 * conf->secret = { 0, NULL }; |
| 2260 | 308 */ |
| 309 | |
| 310 return conf; | |
| 311 } | |
| 312 | |
| 313 | |
| 314 static char * | |
| 315 ngx_http_secure_link_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 316 { | |
| 317 ngx_http_secure_link_conf_t *prev = parent; | |
| 318 ngx_http_secure_link_conf_t *conf = child; | |
| 319 | |
| 320 ngx_conf_merge_str_value(conf->secret, prev->secret, ""); | |
| 321 | |
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322 if (conf->variable == NULL) { |
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323 conf->variable = prev->variable; |
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324 } |
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325 |
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326 if (conf->md5 == NULL) { |
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327 conf->md5 = prev->md5; |
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328 } |
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329 |
| 2260 | 330 return NGX_CONF_OK; |
| 331 } | |
| 332 | |
| 333 | |
| 334 static ngx_int_t | |
| 335 ngx_http_secure_link_add_variables(ngx_conf_t *cf) | |
| 336 { | |
| 337 ngx_http_variable_t *var; | |
| 338 | |
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339 var = ngx_http_add_variable(cf, &ngx_http_secure_link_name, 0); |
| 2260 | 340 if (var == NULL) { |
| 341 return NGX_ERROR; | |
| 342 } | |
| 343 | |
| 344 var->get_handler = ngx_http_secure_link_variable; | |
| 345 | |
|
3756
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
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346 var = ngx_http_add_variable(cf, &ngx_http_secure_link_expires_name, 0); |
|
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
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347 if (var == NULL) { |
|
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
348 return NGX_ERROR; |
|
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
349 } |
|
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
350 |
|
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
351 var->get_handler = ngx_http_secure_link_expires_variable; |
|
7224d008faaf
new ngx_http_secure_link_module with secure_link, secure_link_md5, and
Igor Sysoev <igor@sysoev.ru>
parents:
2912
diff
changeset
|
352 |
| 2260 | 353 return NGX_OK; |
| 354 } |