Mercurial > hg > nginx
annotate src/http/modules/ngx_http_auth_basic_module.c @ 2524:fd4ee75c6eee
name/password were ignored after odd empty lines
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 23 Feb 2009 15:31:18 +0000 |
| parents | 7764f0fdd2a4 |
| children | f0f64973ba2f |
| rev | line source |
|---|---|
| 503 | 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 #define NGX_HTTP_AUTH_BUF_SIZE 2048 | |
| 13 | |
| 14 | |
| 15 typedef struct { | |
| 16 ngx_str_t passwd; | |
| 17 } ngx_http_auth_basic_ctx_t; | |
| 18 | |
| 19 | |
| 20 typedef struct { | |
| 21 ngx_str_t realm; | |
| 22 ngx_str_t user_file; | |
| 23 } ngx_http_auth_basic_loc_conf_t; | |
| 24 | |
| 25 | |
| 26 static ngx_int_t ngx_http_auth_basic_handler(ngx_http_request_t *r); | |
| 27 static ngx_int_t ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, | |
| 28 ngx_http_auth_basic_ctx_t *ctx, ngx_str_t *passwd, ngx_str_t *realm); | |
| 29 static ngx_int_t ngx_http_auth_basic_set_realm(ngx_http_request_t *r, | |
| 30 ngx_str_t *realm); | |
| 31 static void ngx_http_auth_basic_close(ngx_file_t *file); | |
| 32 static void *ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf); | |
| 33 static char *ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, | |
| 34 void *parent, void *child); | |
| 681 | 35 static ngx_int_t ngx_http_auth_basic_init(ngx_conf_t *cf); |
| 503 | 36 static char *ngx_http_auth_basic(ngx_conf_t *cf, void *post, void *data); |
| 37 | |
| 38 | |
| 39 static ngx_conf_post_handler_pt ngx_http_auth_basic_p = ngx_http_auth_basic; | |
| 40 | |
| 41 static ngx_command_t ngx_http_auth_basic_commands[] = { | |
| 42 | |
| 43 { ngx_string("auth_basic"), | |
| 631 | 44 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
| 45 |NGX_CONF_TAKE1, | |
| 503 | 46 ngx_conf_set_str_slot, |
| 47 NGX_HTTP_LOC_CONF_OFFSET, | |
| 48 offsetof(ngx_http_auth_basic_loc_conf_t, realm), | |
| 49 &ngx_http_auth_basic_p }, | |
| 50 | |
| 51 { ngx_string("auth_basic_user_file"), | |
| 631 | 52 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |
| 53 |NGX_CONF_TAKE1, | |
| 503 | 54 ngx_conf_set_str_slot, |
| 55 NGX_HTTP_LOC_CONF_OFFSET, | |
| 56 offsetof(ngx_http_auth_basic_loc_conf_t, user_file), | |
| 57 NULL }, | |
| 58 | |
| 59 ngx_null_command | |
| 60 }; | |
| 61 | |
| 62 | |
| 667 | 63 static ngx_http_module_t ngx_http_auth_basic_module_ctx = { |
| 509 | 64 NULL, /* preconfiguration */ |
| 681 | 65 ngx_http_auth_basic_init, /* postconfiguration */ |
| 503 | 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_auth_basic_create_loc_conf, /* create location configuration */ | |
| 74 ngx_http_auth_basic_merge_loc_conf /* merge location configuration */ | |
| 75 }; | |
| 76 | |
| 77 | |
| 78 ngx_module_t ngx_http_auth_basic_module = { | |
| 509 | 79 NGX_MODULE_V1, |
| 503 | 80 &ngx_http_auth_basic_module_ctx, /* module context */ |
| 81 ngx_http_auth_basic_commands, /* module directives */ | |
| 82 NGX_HTTP_MODULE, /* module type */ | |
| 541 | 83 NULL, /* init master */ |
| 681 | 84 NULL, /* init module */ |
| 541 | 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 | |
| 503 | 91 }; |
| 92 | |
| 93 | |
| 94 static ngx_int_t | |
| 95 ngx_http_auth_basic_handler(ngx_http_request_t *r) | |
| 96 { | |
| 97 off_t offset; | |
| 98 ssize_t n; | |
| 99 ngx_fd_t fd; | |
| 539 | 100 ngx_int_t rc; |
| 101 ngx_str_t pwd; | |
| 102 ngx_uint_t i, login, left, passwd; | |
| 503 | 103 ngx_file_t file; |
| 104 ngx_http_auth_basic_ctx_t *ctx; | |
| 105 ngx_http_auth_basic_loc_conf_t *alcf; | |
| 106 u_char buf[NGX_HTTP_AUTH_BUF_SIZE]; | |
| 107 enum { | |
| 108 sw_login, | |
| 109 sw_passwd, | |
| 110 sw_skip | |
| 111 } state; | |
| 112 | |
| 113 alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_basic_module); | |
| 114 | |
| 115 if (alcf->realm.len == 0 || alcf->user_file.len == 0) { | |
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116 return NGX_DECLINED; |
| 503 | 117 } |
| 118 | |
| 119 ctx = ngx_http_get_module_ctx(r, ngx_http_auth_basic_module); | |
| 120 | |
| 121 if (ctx) { | |
| 122 return ngx_http_auth_basic_crypt_handler(r, ctx, &ctx->passwd, | |
| 123 &alcf->realm); | |
| 124 } | |
| 125 | |
| 539 | 126 rc = ngx_http_auth_basic_user(r); |
| 503 | 127 |
| 539 | 128 if (rc == NGX_DECLINED) { |
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129 |
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130 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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131 "no user/password was provided for basic authentication"); |
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132 |
| 503 | 133 return ngx_http_auth_basic_set_realm(r, &alcf->realm); |
| 134 } | |
| 135 | |
| 539 | 136 if (rc == NGX_ERROR) { |
| 503 | 137 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 138 } | |
| 139 | |
|
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140 fd = ngx_open_file(alcf->user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); |
| 503 | 141 |
| 142 if (fd == NGX_INVALID_FILE) { | |
| 663 | 143 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, |
| 503 | 144 ngx_open_file_n " \"%s\" failed", alcf->user_file.data); |
| 145 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 146 } | |
| 147 | |
| 148 ngx_memzero(&file, sizeof(ngx_file_t)); | |
| 149 | |
| 150 file.fd = fd; | |
| 151 file.name = alcf->user_file; | |
| 152 file.log = r->connection->log; | |
| 153 | |
| 154 state = sw_login; | |
| 155 passwd = 0; | |
| 156 login = 0; | |
| 157 left = 0; | |
| 158 offset = 0; | |
| 159 | |
| 160 for ( ;; ) { | |
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161 i = left; |
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162 |
| 503 | 163 n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left, |
| 164 offset); | |
| 165 | |
| 166 if (n == NGX_ERROR) { | |
| 167 ngx_http_auth_basic_close(&file); | |
| 168 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 169 } | |
| 170 | |
| 171 if (n == 0) { | |
| 172 break; | |
| 173 } | |
| 174 | |
| 175 for (i = left; i < left + n; i++) { | |
| 176 switch (state) { | |
| 177 | |
| 178 case sw_login: | |
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179 if (login == 0) { |
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180 |
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181 if (buf[i] == '#' || buf[i] == CR) { |
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182 state = sw_skip; |
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183 break; |
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184 } |
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185 |
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186 if (buf[i] == LF) { |
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187 break; |
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188 } |
| 503 | 189 } |
| 190 | |
| 539 | 191 if (buf[i] != r->headers_in.user.data[login]) { |
| 503 | 192 state = sw_skip; |
| 193 break; | |
| 194 } | |
| 195 | |
| 539 | 196 if (login == r->headers_in.user.len) { |
| 503 | 197 state = sw_passwd; |
| 198 passwd = i + 1; | |
| 199 } | |
| 200 | |
| 201 login++; | |
| 202 | |
| 203 break; | |
| 204 | |
| 205 case sw_passwd: | |
| 206 if (buf[i] == LF || buf[i] == CR || buf[i] == ':') { | |
| 207 buf[i] = '\0'; | |
| 208 | |
| 209 ngx_http_auth_basic_close(&file); | |
| 210 | |
| 211 pwd.len = i - passwd; | |
| 212 pwd.data = &buf[passwd]; | |
| 213 | |
| 214 return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd, | |
| 215 &alcf->realm); | |
| 216 } | |
| 217 | |
| 218 break; | |
| 219 | |
| 220 case sw_skip: | |
| 221 if (buf[i] == LF) { | |
| 222 state = sw_login; | |
| 223 login = 0; | |
| 224 } | |
| 225 | |
| 226 break; | |
| 227 } | |
| 228 } | |
| 229 | |
| 230 if (state == sw_passwd) { | |
| 231 left = left + n - passwd; | |
| 232 ngx_memcpy(buf, &buf[passwd], left); | |
| 233 passwd = 0; | |
| 234 | |
| 235 } else { | |
| 236 left = 0; | |
| 237 } | |
| 238 | |
| 239 offset += n; | |
| 240 } | |
| 241 | |
| 242 ngx_http_auth_basic_close(&file); | |
| 243 | |
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244 if (state == sw_passwd) { |
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245 pwd.len = i - passwd; |
| 2049 | 246 pwd.data = ngx_pnalloc(r->pool, pwd.len + 1); |
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247 if (pwd.data == NULL) { |
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248 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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249 } |
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250 |
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251 ngx_cpystrn(pwd.data, &buf[passwd], pwd.len + 1); |
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252 |
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253 return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd, &alcf->realm); |
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254 } |
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255 |
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256 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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257 "user \"%V\" was not found in \"%V\"", |
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258 &r->headers_in.user, &alcf->user_file); |
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259 |
| 503 | 260 return ngx_http_auth_basic_set_realm(r, &alcf->realm); |
| 261 } | |
| 262 | |
| 263 | |
| 264 static ngx_int_t | |
| 265 ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, | |
| 266 ngx_http_auth_basic_ctx_t *ctx, ngx_str_t *passwd, ngx_str_t *realm) | |
| 267 { | |
| 268 ngx_int_t rc; | |
| 269 u_char *encrypted; | |
| 270 | |
| 271 rc = ngx_crypt(r->pool, r->headers_in.passwd.data, passwd->data, | |
| 272 &encrypted); | |
| 273 | |
| 274 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
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275 "rc: %d user: \"%V\" salt: \"%s\"", |
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276 rc, &r->headers_in.user, passwd->data); |
| 503 | 277 |
| 278 if (rc == NGX_OK) { | |
| 279 if (ngx_strcmp(encrypted, passwd->data) == 0) { | |
| 280 return NGX_OK; | |
| 281 } | |
| 282 | |
| 283 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 284 "encrypted: \"%s\"", encrypted); | |
| 285 | |
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286 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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287 "user \"%V\": password mismatch", |
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288 &r->headers_in.user); |
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289 |
| 503 | 290 return ngx_http_auth_basic_set_realm(r, realm); |
| 291 } | |
| 292 | |
| 293 if (rc == NGX_ERROR) { | |
| 294 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 295 } | |
| 296 | |
| 297 /* rc == NGX_AGAIN */ | |
| 298 | |
| 299 if (ctx == NULL) { | |
| 300 ctx = ngx_palloc(r->pool, sizeof(ngx_http_auth_basic_ctx_t)); | |
| 301 if (ctx == NULL) { | |
| 302 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 303 } | |
| 304 | |
| 305 ngx_http_set_ctx(r, ctx, ngx_http_auth_basic_module); | |
| 306 | |
| 307 ctx->passwd.len = passwd->len; | |
| 308 passwd->len++; | |
| 309 | |
| 310 ctx->passwd.data = ngx_pstrdup(r->pool, passwd); | |
| 311 if (ctx->passwd.data == NULL) { | |
| 312 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 313 } | |
| 314 | |
| 315 } | |
| 316 | |
| 317 /* TODO: add mutex event */ | |
| 318 | |
| 319 return rc; | |
| 320 } | |
| 321 | |
| 322 | |
| 323 static ngx_int_t | |
| 324 ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm) | |
| 325 { | |
| 326 r->headers_out.www_authenticate = ngx_list_push(&r->headers_out.headers); | |
| 327 if (r->headers_out.www_authenticate == NULL) { | |
| 328 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 329 } | |
| 330 | |
| 509 | 331 r->headers_out.www_authenticate->hash = 1; |
| 503 | 332 r->headers_out.www_authenticate->key.len = sizeof("WWW-Authenticate") - 1; |
| 333 r->headers_out.www_authenticate->key.data = (u_char *) "WWW-Authenticate"; | |
| 334 r->headers_out.www_authenticate->value = *realm; | |
| 335 | |
| 336 return NGX_HTTP_UNAUTHORIZED; | |
| 337 } | |
| 338 | |
| 339 static void | |
| 340 ngx_http_auth_basic_close(ngx_file_t *file) | |
| 341 { | |
| 342 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { | |
| 343 ngx_log_error(NGX_LOG_ALERT, file->log, ngx_errno, | |
| 344 ngx_close_file_n " \"%s\" failed", file->name.data); | |
| 345 } | |
| 346 } | |
| 347 | |
| 348 | |
| 349 static void * | |
| 350 ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf) | |
| 351 { | |
| 352 ngx_http_auth_basic_loc_conf_t *conf; | |
| 353 | |
| 354 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_auth_basic_loc_conf_t)); | |
| 355 if (conf == NULL) { | |
| 356 return NGX_CONF_ERROR; | |
| 357 } | |
| 358 | |
| 359 return conf; | |
| 360 } | |
| 361 | |
| 362 | |
| 363 static char * | |
| 364 ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 365 { | |
| 366 ngx_http_auth_basic_loc_conf_t *prev = parent; | |
| 367 ngx_http_auth_basic_loc_conf_t *conf = child; | |
| 368 | |
| 581 | 369 if (conf->realm.data == NULL) { |
| 503 | 370 conf->realm = prev->realm; |
| 371 } | |
| 372 | |
| 373 if (conf->user_file.data) { | |
| 1352 | 374 if (ngx_conf_full_name(cf->cycle, &conf->user_file, 1) != NGX_OK) { |
| 503 | 375 return NGX_CONF_ERROR; |
| 376 } | |
| 377 | |
| 378 } else { | |
| 379 conf->user_file = prev->user_file; | |
| 380 } | |
| 381 | |
| 382 return NGX_CONF_OK; | |
| 383 } | |
| 384 | |
| 385 | |
| 386 static ngx_int_t | |
| 681 | 387 ngx_http_auth_basic_init(ngx_conf_t *cf) |
| 503 | 388 { |
| 389 ngx_http_handler_pt *h; | |
| 390 ngx_http_core_main_conf_t *cmcf; | |
| 391 | |
| 681 | 392 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| 503 | 393 |
| 394 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers); | |
| 395 if (h == NULL) { | |
| 396 return NGX_ERROR; | |
| 397 } | |
| 398 | |
| 399 *h = ngx_http_auth_basic_handler; | |
| 400 | |
| 401 return NGX_OK; | |
| 402 } | |
| 403 | |
| 404 | |
| 405 static char * | |
| 406 ngx_http_auth_basic(ngx_conf_t *cf, void *post, void *data) | |
| 407 { | |
| 408 ngx_str_t *realm = data; | |
| 409 | |
| 581 | 410 size_t len; |
| 411 u_char *basic, *p; | |
| 412 | |
| 503 | 413 if (ngx_strcmp(realm->data, "off") == 0) { |
| 414 realm->len = 0; | |
| 415 realm->data = (u_char *) ""; | |
| 583 | 416 |
| 417 return NGX_CONF_OK; | |
| 503 | 418 } |
| 419 | |
| 581 | 420 len = sizeof("Basic realm=\"") - 1 + realm->len + 1; |
| 421 | |
| 2049 | 422 basic = ngx_pnalloc(cf->pool, len); |
| 581 | 423 if (basic == NULL) { |
| 424 return NGX_CONF_ERROR; | |
| 425 } | |
| 426 | |
| 427 p = ngx_cpymem(basic, "Basic realm=\"", sizeof("Basic realm=\"") - 1); | |
| 428 p = ngx_cpymem(p, realm->data, realm->len); | |
| 429 *p = '"'; | |
| 430 | |
| 431 realm->len = len; | |
| 432 realm->data = basic; | |
| 433 | |
| 503 | 434 return NGX_CONF_OK; |
| 435 } |