Mercurial > hg > nginx
annotate src/http/modules/ngx_http_auth_basic_module.c @ 7109:4a670c18e5e6
Removed more remnants of the old pthread implementation.
After e284f3ff6831, ngx_crypt() can no longer return NGX_AGAIN.
| author | Ruslan Ermilov <ru@nginx.com> |
|---|---|
| date | Mon, 18 Sep 2017 11:09:41 +0300 |
| parents | 0cdee26605f3 |
| children | e48ac0136ee3 |
| rev | line source |
|---|---|
| 503 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 503 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
|
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11 #include <ngx_crypt.h> |
| 503 | 12 |
| 13 | |
| 14 #define NGX_HTTP_AUTH_BUF_SIZE 2048 | |
| 15 | |
| 16 | |
| 17 typedef struct { | |
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18 ngx_http_complex_value_t *realm; |
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19 ngx_http_complex_value_t user_file; |
| 503 | 20 } ngx_http_auth_basic_loc_conf_t; |
| 21 | |
| 22 | |
| 23 static ngx_int_t ngx_http_auth_basic_handler(ngx_http_request_t *r); | |
| 24 static ngx_int_t ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, | |
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25 ngx_str_t *passwd, ngx_str_t *realm); |
| 503 | 26 static ngx_int_t ngx_http_auth_basic_set_realm(ngx_http_request_t *r, |
| 27 ngx_str_t *realm); | |
| 28 static void ngx_http_auth_basic_close(ngx_file_t *file); | |
| 29 static void *ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf); | |
| 30 static char *ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, | |
| 31 void *parent, void *child); | |
| 681 | 32 static ngx_int_t ngx_http_auth_basic_init(ngx_conf_t *cf); |
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33 static char *ngx_http_auth_basic_user_file(ngx_conf_t *cf, ngx_command_t *cmd, |
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34 void *conf); |
| 503 | 35 |
| 36 | |
| 37 static ngx_command_t ngx_http_auth_basic_commands[] = { | |
| 38 | |
| 39 { ngx_string("auth_basic"), | |
| 631 | 40 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
| 41 |NGX_CONF_TAKE1, | |
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42 ngx_http_set_complex_value_slot, |
| 503 | 43 NGX_HTTP_LOC_CONF_OFFSET, |
| 44 offsetof(ngx_http_auth_basic_loc_conf_t, realm), | |
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45 NULL }, |
| 503 | 46 |
| 47 { ngx_string("auth_basic_user_file"), | |
| 631 | 48 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
| 49 |NGX_CONF_TAKE1, | |
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50 ngx_http_auth_basic_user_file, |
| 503 | 51 NGX_HTTP_LOC_CONF_OFFSET, |
| 52 offsetof(ngx_http_auth_basic_loc_conf_t, user_file), | |
| 53 NULL }, | |
| 54 | |
| 55 ngx_null_command | |
| 56 }; | |
| 57 | |
| 58 | |
| 667 | 59 static ngx_http_module_t ngx_http_auth_basic_module_ctx = { |
| 509 | 60 NULL, /* preconfiguration */ |
| 681 | 61 ngx_http_auth_basic_init, /* postconfiguration */ |
| 503 | 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_auth_basic_create_loc_conf, /* create location configuration */ | |
| 70 ngx_http_auth_basic_merge_loc_conf /* merge location configuration */ | |
| 71 }; | |
| 72 | |
| 73 | |
| 74 ngx_module_t ngx_http_auth_basic_module = { | |
| 509 | 75 NGX_MODULE_V1, |
| 503 | 76 &ngx_http_auth_basic_module_ctx, /* module context */ |
| 77 ngx_http_auth_basic_commands, /* module directives */ | |
| 78 NGX_HTTP_MODULE, /* module type */ | |
| 541 | 79 NULL, /* init master */ |
| 681 | 80 NULL, /* init module */ |
| 541 | 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 | |
| 503 | 87 }; |
| 88 | |
| 89 | |
| 90 static ngx_int_t | |
| 91 ngx_http_auth_basic_handler(ngx_http_request_t *r) | |
| 92 { | |
| 93 off_t offset; | |
| 94 ssize_t n; | |
| 95 ngx_fd_t fd; | |
| 539 | 96 ngx_int_t rc; |
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97 ngx_err_t err; |
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98 ngx_str_t pwd, realm, user_file; |
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99 ngx_uint_t i, level, login, left, passwd; |
| 503 | 100 ngx_file_t file; |
| 101 ngx_http_auth_basic_loc_conf_t *alcf; | |
| 102 u_char buf[NGX_HTTP_AUTH_BUF_SIZE]; | |
| 103 enum { | |
| 104 sw_login, | |
| 105 sw_passwd, | |
| 106 sw_skip | |
| 107 } state; | |
| 108 | |
| 109 alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_basic_module); | |
| 110 | |
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111 if (alcf->realm == NULL || alcf->user_file.value.data == NULL) { |
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112 return NGX_DECLINED; |
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113 } |
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114 |
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115 if (ngx_http_complex_value(r, alcf->realm, &realm) != NGX_OK) { |
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116 return NGX_ERROR; |
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117 } |
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118 |
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119 if (realm.len == 3 && ngx_strncmp(realm.data, "off", 3) == 0) { |
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120 return NGX_DECLINED; |
| 503 | 121 } |
| 122 | |
| 539 | 123 rc = ngx_http_auth_basic_user(r); |
| 503 | 124 |
| 539 | 125 if (rc == NGX_DECLINED) { |
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126 |
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127 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, |
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128 "no user/password was provided for basic authentication"); |
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129 |
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130 return ngx_http_auth_basic_set_realm(r, &realm); |
| 503 | 131 } |
| 132 | |
| 539 | 133 if (rc == NGX_ERROR) { |
| 503 | 134 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 135 } | |
| 136 | |
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137 if (ngx_http_complex_value(r, &alcf->user_file, &user_file) != NGX_OK) { |
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138 return NGX_ERROR; |
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139 } |
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140 |
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141 fd = ngx_open_file(user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); |
| 503 | 142 |
| 143 if (fd == NGX_INVALID_FILE) { | |
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144 err = ngx_errno; |
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145 |
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146 if (err == NGX_ENOENT) { |
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147 level = NGX_LOG_ERR; |
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148 rc = NGX_HTTP_FORBIDDEN; |
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149 |
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150 } else { |
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151 level = NGX_LOG_CRIT; |
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152 rc = NGX_HTTP_INTERNAL_SERVER_ERROR; |
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153 } |
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154 |
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155 ngx_log_error(level, r->connection->log, err, |
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156 ngx_open_file_n " \"%s\" failed", user_file.data); |
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157 |
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158 return rc; |
| 503 | 159 } |
| 160 | |
| 161 ngx_memzero(&file, sizeof(ngx_file_t)); | |
| 162 | |
| 163 file.fd = fd; | |
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164 file.name = user_file; |
| 503 | 165 file.log = r->connection->log; |
| 166 | |
| 167 state = sw_login; | |
| 168 passwd = 0; | |
| 169 login = 0; | |
| 170 left = 0; | |
| 171 offset = 0; | |
| 172 | |
| 173 for ( ;; ) { | |
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174 i = left; |
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175 |
| 503 | 176 n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left, |
| 177 offset); | |
| 178 | |
| 179 if (n == NGX_ERROR) { | |
| 180 ngx_http_auth_basic_close(&file); | |
| 181 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 182 } | |
| 183 | |
| 184 if (n == 0) { | |
| 185 break; | |
| 186 } | |
| 187 | |
| 188 for (i = left; i < left + n; i++) { | |
| 189 switch (state) { | |
| 190 | |
| 191 case sw_login: | |
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192 if (login == 0) { |
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193 |
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194 if (buf[i] == '#' || buf[i] == CR) { |
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195 state = sw_skip; |
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196 break; |
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197 } |
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198 |
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199 if (buf[i] == LF) { |
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200 break; |
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201 } |
| 503 | 202 } |
| 203 | |
| 539 | 204 if (buf[i] != r->headers_in.user.data[login]) { |
| 503 | 205 state = sw_skip; |
| 206 break; | |
| 207 } | |
| 208 | |
| 539 | 209 if (login == r->headers_in.user.len) { |
| 503 | 210 state = sw_passwd; |
| 211 passwd = i + 1; | |
| 212 } | |
| 213 | |
| 214 login++; | |
| 215 | |
| 216 break; | |
| 217 | |
| 218 case sw_passwd: | |
| 219 if (buf[i] == LF || buf[i] == CR || buf[i] == ':') { | |
| 220 buf[i] = '\0'; | |
| 221 | |
| 222 ngx_http_auth_basic_close(&file); | |
| 223 | |
| 224 pwd.len = i - passwd; | |
| 225 pwd.data = &buf[passwd]; | |
| 226 | |
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227 return ngx_http_auth_basic_crypt_handler(r, &pwd, &realm); |
| 503 | 228 } |
| 229 | |
| 230 break; | |
| 231 | |
| 232 case sw_skip: | |
| 233 if (buf[i] == LF) { | |
| 234 state = sw_login; | |
| 235 login = 0; | |
| 236 } | |
| 237 | |
| 238 break; | |
| 239 } | |
| 240 } | |
| 241 | |
| 242 if (state == sw_passwd) { | |
| 243 left = left + n - passwd; | |
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244 ngx_memmove(buf, &buf[passwd], left); |
| 503 | 245 passwd = 0; |
| 246 | |
| 247 } else { | |
| 248 left = 0; | |
| 249 } | |
| 250 | |
| 251 offset += n; | |
| 252 } | |
| 253 | |
| 254 ngx_http_auth_basic_close(&file); | |
| 255 | |
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256 if (state == sw_passwd) { |
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257 pwd.len = i - passwd; |
| 2049 | 258 pwd.data = ngx_pnalloc(r->pool, pwd.len + 1); |
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259 if (pwd.data == NULL) { |
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260 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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261 } |
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262 |
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263 ngx_cpystrn(pwd.data, &buf[passwd], pwd.len + 1); |
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264 |
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265 return ngx_http_auth_basic_crypt_handler(r, &pwd, &realm); |
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266 } |
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267 |
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268 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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269 "user \"%V\" was not found in \"%V\"", |
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270 &r->headers_in.user, &user_file); |
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271 |
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272 return ngx_http_auth_basic_set_realm(r, &realm); |
| 503 | 273 } |
| 274 | |
| 275 | |
| 276 static ngx_int_t | |
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277 ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, ngx_str_t *passwd, |
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278 ngx_str_t *realm) |
| 503 | 279 { |
| 280 ngx_int_t rc; | |
| 281 u_char *encrypted; | |
| 282 | |
| 283 rc = ngx_crypt(r->pool, r->headers_in.passwd.data, passwd->data, | |
| 284 &encrypted); | |
| 285 | |
| 286 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 6480 | 287 "rc: %i user: \"%V\" salt: \"%s\"", |
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288 rc, &r->headers_in.user, passwd->data); |
| 503 | 289 |
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290 if (rc != NGX_OK) { |
| 503 | 291 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 292 } | |
| 293 | |
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294 if (ngx_strcmp(encrypted, passwd->data) == 0) { |
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295 return NGX_OK; |
| 503 | 296 } |
| 297 | |
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298 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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299 "encrypted: \"%s\"", encrypted); |
| 503 | 300 |
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301 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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302 "user \"%V\": password mismatch", |
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303 &r->headers_in.user); |
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304 |
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305 return ngx_http_auth_basic_set_realm(r, realm); |
| 503 | 306 } |
| 307 | |
| 308 | |
| 309 static ngx_int_t | |
| 310 ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm) | |
| 311 { | |
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312 size_t len; |
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313 u_char *basic, *p; |
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314 |
| 503 | 315 r->headers_out.www_authenticate = ngx_list_push(&r->headers_out.headers); |
| 316 if (r->headers_out.www_authenticate == NULL) { | |
| 317 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 318 } | |
| 319 | |
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320 len = sizeof("Basic realm=\"\"") - 1 + realm->len; |
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321 |
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322 basic = ngx_pnalloc(r->pool, len); |
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323 if (basic == NULL) { |
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324 r->headers_out.www_authenticate->hash = 0; |
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325 r->headers_out.www_authenticate = NULL; |
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326 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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327 } |
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328 |
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329 p = ngx_cpymem(basic, "Basic realm=\"", sizeof("Basic realm=\"") - 1); |
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330 p = ngx_cpymem(p, realm->data, realm->len); |
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331 *p = '"'; |
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332 |
| 509 | 333 r->headers_out.www_authenticate->hash = 1; |
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334 ngx_str_set(&r->headers_out.www_authenticate->key, "WWW-Authenticate"); |
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335 r->headers_out.www_authenticate->value.data = basic; |
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336 r->headers_out.www_authenticate->value.len = len; |
| 503 | 337 |
| 338 return NGX_HTTP_UNAUTHORIZED; | |
| 339 } | |
| 340 | |
| 341 static void | |
| 342 ngx_http_auth_basic_close(ngx_file_t *file) | |
| 343 { | |
| 344 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
| 345 ngx_log_error(NGX_LOG_ALERT, file->log, ngx_errno, | |
| 346 ngx_close_file_n " \"%s\" failed", file->name.data); | |
| 347 } | |
| 348 } | |
| 349 | |
| 350 | |
| 351 static void * | |
| 352 ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf) | |
| 353 { | |
| 354 ngx_http_auth_basic_loc_conf_t *conf; | |
| 355 | |
| 356 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_auth_basic_loc_conf_t)); | |
| 357 if (conf == NULL) { | |
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358 return NULL; |
| 503 | 359 } |
| 360 | |
| 361 return conf; | |
| 362 } | |
| 363 | |
| 364 | |
| 365 static char * | |
| 366 ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 367 { | |
| 368 ngx_http_auth_basic_loc_conf_t *prev = parent; | |
| 369 ngx_http_auth_basic_loc_conf_t *conf = child; | |
| 370 | |
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371 if (conf->realm == NULL) { |
| 503 | 372 conf->realm = prev->realm; |
| 373 } | |
| 374 | |
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375 if (conf->user_file.value.data == NULL) { |
| 503 | 376 conf->user_file = prev->user_file; |
| 377 } | |
| 378 | |
| 379 return NGX_CONF_OK; | |
| 380 } | |
| 381 | |
| 382 | |
| 383 static ngx_int_t | |
| 681 | 384 ngx_http_auth_basic_init(ngx_conf_t *cf) |
| 503 | 385 { |
| 386 ngx_http_handler_pt *h; | |
| 387 ngx_http_core_main_conf_t *cmcf; | |
| 388 | |
| 681 | 389 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| 503 | 390 |
| 391 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers); | |
| 392 if (h == NULL) { | |
| 393 return NGX_ERROR; | |
| 394 } | |
| 395 | |
| 396 *h = ngx_http_auth_basic_handler; | |
| 397 | |
| 398 return NGX_OK; | |
| 399 } | |
| 400 | |
| 401 | |
| 402 static char * | |
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403 ngx_http_auth_basic_user_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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404 { |
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405 ngx_http_auth_basic_loc_conf_t *alcf = conf; |
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406 |
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407 ngx_str_t *value; |
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408 ngx_http_compile_complex_value_t ccv; |
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409 |
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410 if (alcf->user_file.value.data) { |
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411 return "is duplicate"; |
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412 } |
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413 |
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414 value = cf->args->elts; |
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415 |
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416 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); |
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417 |
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418 ccv.cf = cf; |
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419 ccv.value = &value[1]; |
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420 ccv.complex_value = &alcf->user_file; |
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421 ccv.zero = 1; |
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422 ccv.conf_prefix = 1; |
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423 |
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424 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { |
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425 return NGX_CONF_ERROR; |
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426 } |
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427 |
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428 return NGX_CONF_OK; |
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429 } |