52
|
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);
|
230
|
35 static ngx_int_t ngx_http_auth_basic_init(ngx_conf_t *cf);
|
52
|
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"),
|
180
|
44 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF
|
|
45 |NGX_CONF_TAKE1,
|
52
|
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"),
|
180
|
52 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF
|
|
53 |NGX_CONF_TAKE1,
|
52
|
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
|
216
|
63 static ngx_http_module_t ngx_http_auth_basic_module_ctx = {
|
58
|
64 NULL, /* preconfiguration */
|
230
|
65 ngx_http_auth_basic_init, /* postconfiguration */
|
52
|
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 = {
|
58
|
79 NGX_MODULE_V1,
|
52
|
80 &ngx_http_auth_basic_module_ctx, /* module context */
|
|
81 ngx_http_auth_basic_commands, /* module directives */
|
|
82 NGX_HTTP_MODULE, /* module type */
|
90
|
83 NULL, /* init master */
|
230
|
84 NULL, /* init module */
|
90
|
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
|
52
|
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;
|
88
|
100 ngx_int_t rc;
|
|
101 ngx_str_t pwd;
|
|
102 ngx_uint_t i, login, left, passwd;
|
52
|
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) {
|
358
|
116 return NGX_DECLINED;
|
52
|
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
|
88
|
126 rc = ngx_http_auth_basic_user(r);
|
52
|
127
|
88
|
128 if (rc == NGX_DECLINED) {
|
52
|
129 return ngx_http_auth_basic_set_realm(r, &alcf->realm);
|
|
130 }
|
|
131
|
88
|
132 if (rc == NGX_ERROR) {
|
52
|
133 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
134 }
|
|
135
|
276
|
136 fd = ngx_open_file(alcf->user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
|
52
|
137
|
|
138 if (fd == NGX_INVALID_FILE) {
|
212
|
139 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
52
|
140 ngx_open_file_n " \"%s\" failed", alcf->user_file.data);
|
|
141 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
142 }
|
|
143
|
|
144 ngx_memzero(&file, sizeof(ngx_file_t));
|
|
145
|
|
146 file.fd = fd;
|
|
147 file.name = alcf->user_file;
|
|
148 file.log = r->connection->log;
|
|
149
|
|
150 state = sw_login;
|
|
151 passwd = 0;
|
|
152 login = 0;
|
|
153 left = 0;
|
|
154 offset = 0;
|
|
155
|
|
156 for ( ;; ) {
|
262
|
157 i = left;
|
|
158
|
52
|
159 n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left,
|
|
160 offset);
|
|
161
|
|
162 if (n == NGX_ERROR) {
|
|
163 ngx_http_auth_basic_close(&file);
|
|
164 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
165 }
|
|
166
|
|
167 if (n == 0) {
|
|
168 break;
|
|
169 }
|
|
170
|
|
171 for (i = left; i < left + n; i++) {
|
|
172 switch (state) {
|
|
173
|
|
174 case sw_login:
|
|
175 if (login == 0 && buf[i] == '#') {
|
|
176 state = sw_skip;
|
|
177 break;
|
|
178 }
|
|
179
|
88
|
180 if (buf[i] != r->headers_in.user.data[login]) {
|
52
|
181 state = sw_skip;
|
|
182 break;
|
|
183 }
|
|
184
|
88
|
185 if (login == r->headers_in.user.len) {
|
52
|
186 state = sw_passwd;
|
|
187 passwd = i + 1;
|
|
188 }
|
|
189
|
|
190 login++;
|
|
191
|
|
192 break;
|
|
193
|
|
194 case sw_passwd:
|
|
195 if (buf[i] == LF || buf[i] == CR || buf[i] == ':') {
|
|
196 buf[i] = '\0';
|
|
197
|
|
198 ngx_http_auth_basic_close(&file);
|
|
199
|
|
200 pwd.len = i - passwd;
|
|
201 pwd.data = &buf[passwd];
|
|
202
|
|
203 return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd,
|
|
204 &alcf->realm);
|
|
205 }
|
|
206
|
|
207 break;
|
|
208
|
|
209 case sw_skip:
|
|
210 if (buf[i] == LF) {
|
|
211 state = sw_login;
|
|
212 login = 0;
|
|
213 }
|
|
214
|
|
215 break;
|
|
216 }
|
|
217 }
|
|
218
|
|
219 if (state == sw_passwd) {
|
|
220 left = left + n - passwd;
|
|
221 ngx_memcpy(buf, &buf[passwd], left);
|
|
222 passwd = 0;
|
|
223
|
|
224 } else {
|
|
225 left = 0;
|
|
226 }
|
|
227
|
|
228 offset += n;
|
|
229 }
|
|
230
|
|
231 ngx_http_auth_basic_close(&file);
|
|
232
|
262
|
233 if (state == sw_passwd) {
|
|
234 pwd.len = i - passwd;
|
|
235 pwd.data = ngx_palloc(r->pool, pwd.len + 1);
|
|
236 if (pwd.data == NULL) {
|
|
237 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
238 }
|
|
239
|
|
240 ngx_cpystrn(pwd.data, &buf[passwd], pwd.len + 1);
|
|
241
|
|
242 return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd, &alcf->realm);
|
|
243 }
|
|
244
|
52
|
245 return ngx_http_auth_basic_set_realm(r, &alcf->realm);
|
|
246 }
|
|
247
|
|
248
|
|
249 static ngx_int_t
|
|
250 ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r,
|
|
251 ngx_http_auth_basic_ctx_t *ctx, ngx_str_t *passwd, ngx_str_t *realm)
|
|
252 {
|
|
253 ngx_int_t rc;
|
|
254 u_char *encrypted;
|
|
255
|
|
256 rc = ngx_crypt(r->pool, r->headers_in.passwd.data, passwd->data,
|
|
257 &encrypted);
|
|
258
|
|
259 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260 "rc: %d user: \"%V\" salt: \"%s\"",
|
|
261 rc, &r->headers_in.user, passwd->data);
|
|
262
|
|
263 if (rc == NGX_OK) {
|
|
264 if (ngx_strcmp(encrypted, passwd->data) == 0) {
|
|
265 return NGX_OK;
|
|
266 }
|
|
267
|
|
268 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
269 "encrypted: \"%s\"", encrypted);
|
|
270
|
|
271 return ngx_http_auth_basic_set_realm(r, realm);
|
|
272 }
|
|
273
|
|
274 if (rc == NGX_ERROR) {
|
|
275 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
276 }
|
|
277
|
|
278 /* rc == NGX_AGAIN */
|
|
279
|
|
280 if (ctx == NULL) {
|
|
281 ctx = ngx_palloc(r->pool, sizeof(ngx_http_auth_basic_ctx_t));
|
|
282 if (ctx == NULL) {
|
|
283 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
284 }
|
|
285
|
|
286 ngx_http_set_ctx(r, ctx, ngx_http_auth_basic_module);
|
|
287
|
|
288 ctx->passwd.len = passwd->len;
|
|
289 passwd->len++;
|
|
290
|
|
291 ctx->passwd.data = ngx_pstrdup(r->pool, passwd);
|
|
292 if (ctx->passwd.data == NULL) {
|
|
293 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
294 }
|
|
295
|
|
296 }
|
|
297
|
|
298 /* TODO: add mutex event */
|
|
299
|
|
300 return rc;
|
|
301 }
|
|
302
|
|
303
|
|
304 static ngx_int_t
|
|
305 ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm)
|
|
306 {
|
|
307 r->headers_out.www_authenticate = ngx_list_push(&r->headers_out.headers);
|
|
308 if (r->headers_out.www_authenticate == NULL) {
|
|
309 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
310 }
|
|
311
|
58
|
312 r->headers_out.www_authenticate->hash = 1;
|
52
|
313 r->headers_out.www_authenticate->key.len = sizeof("WWW-Authenticate") - 1;
|
|
314 r->headers_out.www_authenticate->key.data = (u_char *) "WWW-Authenticate";
|
|
315 r->headers_out.www_authenticate->value = *realm;
|
|
316
|
|
317 return NGX_HTTP_UNAUTHORIZED;
|
|
318 }
|
|
319
|
|
320 static void
|
|
321 ngx_http_auth_basic_close(ngx_file_t *file)
|
|
322 {
|
|
323 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) {
|
|
324 ngx_log_error(NGX_LOG_ALERT, file->log, ngx_errno,
|
|
325 ngx_close_file_n " \"%s\" failed", file->name.data);
|
|
326 }
|
|
327 }
|
|
328
|
|
329
|
|
330 static void *
|
|
331 ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf)
|
|
332 {
|
|
333 ngx_http_auth_basic_loc_conf_t *conf;
|
|
334
|
|
335 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_auth_basic_loc_conf_t));
|
|
336 if (conf == NULL) {
|
|
337 return NGX_CONF_ERROR;
|
|
338 }
|
|
339
|
|
340 return conf;
|
|
341 }
|
|
342
|
|
343
|
|
344 static char *
|
|
345 ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
346 {
|
|
347 ngx_http_auth_basic_loc_conf_t *prev = parent;
|
|
348 ngx_http_auth_basic_loc_conf_t *conf = child;
|
|
349
|
130
|
350 if (conf->realm.data == NULL) {
|
52
|
351 conf->realm = prev->realm;
|
|
352 }
|
|
353
|
|
354 if (conf->user_file.data) {
|
324
|
355 if (ngx_conf_full_name(cf->cycle, &conf->user_file, 1) != NGX_OK) {
|
52
|
356 return NGX_CONF_ERROR;
|
|
357 }
|
|
358
|
|
359 } else {
|
|
360 conf->user_file = prev->user_file;
|
|
361 }
|
|
362
|
|
363 return NGX_CONF_OK;
|
|
364 }
|
|
365
|
|
366
|
|
367 static ngx_int_t
|
230
|
368 ngx_http_auth_basic_init(ngx_conf_t *cf)
|
52
|
369 {
|
|
370 ngx_http_handler_pt *h;
|
|
371 ngx_http_core_main_conf_t *cmcf;
|
|
372
|
230
|
373 cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
52
|
374
|
|
375 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers);
|
|
376 if (h == NULL) {
|
|
377 return NGX_ERROR;
|
|
378 }
|
|
379
|
|
380 *h = ngx_http_auth_basic_handler;
|
|
381
|
|
382 return NGX_OK;
|
|
383 }
|
|
384
|
|
385
|
|
386 static char *
|
|
387 ngx_http_auth_basic(ngx_conf_t *cf, void *post, void *data)
|
|
388 {
|
|
389 ngx_str_t *realm = data;
|
|
390
|
130
|
391 size_t len;
|
|
392 u_char *basic, *p;
|
|
393
|
52
|
394 if (ngx_strcmp(realm->data, "off") == 0) {
|
|
395 realm->len = 0;
|
|
396 realm->data = (u_char *) "";
|
132
|
397
|
|
398 return NGX_CONF_OK;
|
52
|
399 }
|
|
400
|
130
|
401 len = sizeof("Basic realm=\"") - 1 + realm->len + 1;
|
|
402
|
|
403 basic = ngx_palloc(cf->pool, len);
|
|
404 if (basic == NULL) {
|
|
405 return NGX_CONF_ERROR;
|
|
406 }
|
|
407
|
|
408 p = ngx_cpymem(basic, "Basic realm=\"", sizeof("Basic realm=\"") - 1);
|
|
409 p = ngx_cpymem(p, realm->data, realm->len);
|
|
410 *p = '"';
|
|
411
|
|
412 realm->len = len;
|
|
413 realm->data = basic;
|
|
414
|
52
|
415 return NGX_CONF_OK;
|
|
416 }
|