Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_auth_basic_module.c @ 2535:ec5825afc7eb
use variable for often used field
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 24 Feb 2009 08:32:02 +0000 |
parents | fd4ee75c6eee |
children | f0f64973ba2f |
rev | line source |
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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 } |