|
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);
|
|
|
35 static ngx_int_t ngx_http_auth_basic_init(ngx_cycle_t *cycle);
|
|
|
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"),
|
|
|
44 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
45 ngx_conf_set_str_slot,
|
|
|
46 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
47 offsetof(ngx_http_auth_basic_loc_conf_t, realm),
|
|
|
48 &ngx_http_auth_basic_p },
|
|
|
49
|
|
|
50 { ngx_string("auth_basic_user_file"),
|
|
|
51 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
52 ngx_conf_set_str_slot,
|
|
|
53 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
54 offsetof(ngx_http_auth_basic_loc_conf_t, user_file),
|
|
|
55 NULL },
|
|
|
56
|
|
|
57 ngx_null_command
|
|
|
58 };
|
|
|
59
|
|
|
60
|
|
|
61
|
|
|
62 ngx_http_module_t ngx_http_auth_basic_module_ctx = {
|
|
58
|
63 NULL, /* preconfiguration */
|
|
|
64 NULL, /* postconfiguration */
|
|
52
|
65
|
|
|
66 NULL, /* create main configuration */
|
|
|
67 NULL, /* init main configuration */
|
|
|
68
|
|
|
69 NULL, /* create server configuration */
|
|
|
70 NULL, /* merge server configuration */
|
|
|
71
|
|
|
72 ngx_http_auth_basic_create_loc_conf, /* create location configuration */
|
|
|
73 ngx_http_auth_basic_merge_loc_conf /* merge location configuration */
|
|
|
74 };
|
|
|
75
|
|
|
76
|
|
|
77 ngx_module_t ngx_http_auth_basic_module = {
|
|
58
|
78 NGX_MODULE_V1,
|
|
52
|
79 &ngx_http_auth_basic_module_ctx, /* module context */
|
|
|
80 ngx_http_auth_basic_commands, /* module directives */
|
|
|
81 NGX_HTTP_MODULE, /* module type */
|
|
90
|
82 NULL, /* init master */
|
|
52
|
83 ngx_http_auth_basic_init, /* init module */
|
|
90
|
84 NULL, /* init process */
|
|
|
85 NULL, /* init thread */
|
|
|
86 NULL, /* exit thread */
|
|
|
87 NULL, /* exit process */
|
|
|
88 NULL, /* exit master */
|
|
|
89 NGX_MODULE_V1_PADDING
|
|
52
|
90 };
|
|
|
91
|
|
|
92
|
|
|
93 static ngx_int_t
|
|
|
94 ngx_http_auth_basic_handler(ngx_http_request_t *r)
|
|
|
95 {
|
|
|
96 off_t offset;
|
|
|
97 ssize_t n;
|
|
|
98 ngx_fd_t fd;
|
|
88
|
99 ngx_int_t rc;
|
|
|
100 ngx_str_t pwd;
|
|
|
101 ngx_uint_t i, login, left, passwd;
|
|
52
|
102 ngx_file_t file;
|
|
|
103 ngx_http_auth_basic_ctx_t *ctx;
|
|
|
104 ngx_http_auth_basic_loc_conf_t *alcf;
|
|
|
105 u_char buf[NGX_HTTP_AUTH_BUF_SIZE];
|
|
|
106 enum {
|
|
|
107 sw_login,
|
|
|
108 sw_passwd,
|
|
|
109 sw_skip
|
|
|
110 } state;
|
|
|
111
|
|
|
112 alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_basic_module);
|
|
|
113
|
|
|
114 if (alcf->realm.len == 0 || alcf->user_file.len == 0) {
|
|
|
115 return NGX_OK;
|
|
|
116 }
|
|
|
117
|
|
|
118 ctx = ngx_http_get_module_ctx(r, ngx_http_auth_basic_module);
|
|
|
119
|
|
|
120 if (ctx) {
|
|
|
121 return ngx_http_auth_basic_crypt_handler(r, ctx, &ctx->passwd,
|
|
|
122 &alcf->realm);
|
|
|
123 }
|
|
|
124
|
|
88
|
125 rc = ngx_http_auth_basic_user(r);
|
|
52
|
126
|
|
88
|
127 if (rc == NGX_DECLINED) {
|
|
52
|
128 return ngx_http_auth_basic_set_realm(r, &alcf->realm);
|
|
|
129 }
|
|
|
130
|
|
88
|
131 if (rc == NGX_ERROR) {
|
|
52
|
132 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
133 }
|
|
|
134
|
|
|
135 fd = ngx_open_file(alcf->user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN);
|
|
|
136
|
|
|
137 if (fd == NGX_INVALID_FILE) {
|
|
|
138 ngx_log_error(NGX_LOG_ERR, r->connection->log, ngx_errno,
|
|
|
139 ngx_open_file_n " \"%s\" failed", alcf->user_file.data);
|
|
|
140 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
141 }
|
|
|
142
|
|
|
143 ngx_memzero(&file, sizeof(ngx_file_t));
|
|
|
144
|
|
|
145 file.fd = fd;
|
|
|
146 file.name = alcf->user_file;
|
|
|
147 file.log = r->connection->log;
|
|
|
148
|
|
|
149 state = sw_login;
|
|
|
150 passwd = 0;
|
|
|
151 login = 0;
|
|
|
152 left = 0;
|
|
|
153 offset = 0;
|
|
|
154
|
|
|
155 for ( ;; ) {
|
|
|
156 n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left,
|
|
|
157 offset);
|
|
|
158
|
|
|
159 if (n == NGX_ERROR) {
|
|
|
160 ngx_http_auth_basic_close(&file);
|
|
|
161 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
162 }
|
|
|
163
|
|
|
164 if (n == 0) {
|
|
|
165 break;
|
|
|
166 }
|
|
|
167
|
|
|
168 for (i = left; i < left + n; i++) {
|
|
|
169 switch (state) {
|
|
|
170
|
|
|
171 case sw_login:
|
|
|
172 if (login == 0 && buf[i] == '#') {
|
|
|
173 state = sw_skip;
|
|
|
174 break;
|
|
|
175 }
|
|
|
176
|
|
88
|
177 if (buf[i] != r->headers_in.user.data[login]) {
|
|
52
|
178 state = sw_skip;
|
|
|
179 break;
|
|
|
180 }
|
|
|
181
|
|
88
|
182 if (login == r->headers_in.user.len) {
|
|
52
|
183 state = sw_passwd;
|
|
|
184 passwd = i + 1;
|
|
|
185 }
|
|
|
186
|
|
|
187 login++;
|
|
|
188
|
|
|
189 break;
|
|
|
190
|
|
|
191 case sw_passwd:
|
|
|
192 if (buf[i] == LF || buf[i] == CR || buf[i] == ':') {
|
|
|
193 buf[i] = '\0';
|
|
|
194
|
|
|
195 ngx_http_auth_basic_close(&file);
|
|
|
196
|
|
|
197 pwd.len = i - passwd;
|
|
|
198 pwd.data = &buf[passwd];
|
|
|
199
|
|
|
200 return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd,
|
|
|
201 &alcf->realm);
|
|
|
202 }
|
|
|
203
|
|
|
204 break;
|
|
|
205
|
|
|
206 case sw_skip:
|
|
|
207 if (buf[i] == LF) {
|
|
|
208 state = sw_login;
|
|
|
209 login = 0;
|
|
|
210 }
|
|
|
211
|
|
|
212 break;
|
|
|
213 }
|
|
|
214 }
|
|
|
215
|
|
|
216 if (state == sw_passwd) {
|
|
|
217 left = left + n - passwd;
|
|
|
218 ngx_memcpy(buf, &buf[passwd], left);
|
|
|
219 passwd = 0;
|
|
|
220
|
|
|
221 } else {
|
|
|
222 left = 0;
|
|
|
223 }
|
|
|
224
|
|
|
225 offset += n;
|
|
|
226 }
|
|
|
227
|
|
|
228 ngx_http_auth_basic_close(&file);
|
|
|
229
|
|
|
230 return ngx_http_auth_basic_set_realm(r, &alcf->realm);
|
|
|
231 }
|
|
|
232
|
|
|
233
|
|
|
234 static ngx_int_t
|
|
|
235 ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r,
|
|
|
236 ngx_http_auth_basic_ctx_t *ctx, ngx_str_t *passwd, ngx_str_t *realm)
|
|
|
237 {
|
|
|
238 ngx_int_t rc;
|
|
|
239 u_char *encrypted;
|
|
|
240
|
|
|
241 rc = ngx_crypt(r->pool, r->headers_in.passwd.data, passwd->data,
|
|
|
242 &encrypted);
|
|
|
243
|
|
|
244 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
245 "rc: %d user: \"%V\" salt: \"%s\"",
|
|
|
246 rc, &r->headers_in.user, passwd->data);
|
|
|
247
|
|
|
248 if (rc == NGX_OK) {
|
|
|
249 if (ngx_strcmp(encrypted, passwd->data) == 0) {
|
|
|
250 return NGX_OK;
|
|
|
251 }
|
|
|
252
|
|
|
253 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
254 "encrypted: \"%s\"", encrypted);
|
|
|
255
|
|
|
256 return ngx_http_auth_basic_set_realm(r, realm);
|
|
|
257 }
|
|
|
258
|
|
|
259 if (rc == NGX_ERROR) {
|
|
|
260 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
261 }
|
|
|
262
|
|
|
263 /* rc == NGX_AGAIN */
|
|
|
264
|
|
|
265 if (ctx == NULL) {
|
|
|
266 ctx = ngx_palloc(r->pool, sizeof(ngx_http_auth_basic_ctx_t));
|
|
|
267 if (ctx == NULL) {
|
|
|
268 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
269 }
|
|
|
270
|
|
|
271 ngx_http_set_ctx(r, ctx, ngx_http_auth_basic_module);
|
|
|
272
|
|
|
273 ctx->passwd.len = passwd->len;
|
|
|
274 passwd->len++;
|
|
|
275
|
|
|
276 ctx->passwd.data = ngx_pstrdup(r->pool, passwd);
|
|
|
277 if (ctx->passwd.data == NULL) {
|
|
|
278 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
279 }
|
|
|
280
|
|
|
281 }
|
|
|
282
|
|
|
283 /* TODO: add mutex event */
|
|
|
284
|
|
|
285 return rc;
|
|
|
286 }
|
|
|
287
|
|
|
288
|
|
|
289 static ngx_int_t
|
|
|
290 ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm)
|
|
|
291 {
|
|
|
292 r->headers_out.www_authenticate = ngx_list_push(&r->headers_out.headers);
|
|
|
293 if (r->headers_out.www_authenticate == NULL) {
|
|
|
294 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
295 }
|
|
|
296
|
|
58
|
297 r->headers_out.www_authenticate->hash = 1;
|
|
52
|
298 r->headers_out.www_authenticate->key.len = sizeof("WWW-Authenticate") - 1;
|
|
|
299 r->headers_out.www_authenticate->key.data = (u_char *) "WWW-Authenticate";
|
|
|
300 r->headers_out.www_authenticate->value = *realm;
|
|
|
301
|
|
|
302 return NGX_HTTP_UNAUTHORIZED;
|
|
|
303 }
|
|
|
304
|
|
|
305 static void
|
|
|
306 ngx_http_auth_basic_close(ngx_file_t *file)
|
|
|
307 {
|
|
|
308 if (ngx_close_file(file->fd) == NGX_FILE_ERROR) {
|
|
|
309 ngx_log_error(NGX_LOG_ALERT, file->log, ngx_errno,
|
|
|
310 ngx_close_file_n " \"%s\" failed", file->name.data);
|
|
|
311 }
|
|
|
312 }
|
|
|
313
|
|
|
314
|
|
|
315 static void *
|
|
|
316 ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf)
|
|
|
317 {
|
|
|
318 ngx_http_auth_basic_loc_conf_t *conf;
|
|
|
319
|
|
|
320 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_auth_basic_loc_conf_t));
|
|
|
321 if (conf == NULL) {
|
|
|
322 return NGX_CONF_ERROR;
|
|
|
323 }
|
|
|
324
|
|
|
325 return conf;
|
|
|
326 }
|
|
|
327
|
|
|
328
|
|
|
329 static char *
|
|
|
330 ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
331 {
|
|
|
332 ngx_http_auth_basic_loc_conf_t *prev = parent;
|
|
|
333 ngx_http_auth_basic_loc_conf_t *conf = child;
|
|
|
334
|
|
|
335 size_t len;
|
|
|
336 u_char *realm, *p;
|
|
|
337
|
|
|
338 if (conf->realm.data) {
|
|
|
339 if (conf->realm.len) {
|
|
|
340 len = sizeof("Basic realm=\"") - 1 + conf->realm.len + 1;
|
|
|
341
|
|
|
342 realm = ngx_palloc(cf->pool, len);
|
|
|
343 if (realm == NULL) {
|
|
|
344 return NGX_CONF_ERROR;
|
|
|
345 }
|
|
|
346
|
|
|
347 p = ngx_cpymem(realm, "Basic realm=\"",
|
|
|
348 sizeof("Basic realm=\"") - 1);
|
|
|
349 p = ngx_cpymem(p, conf->realm.data, conf->realm.len);
|
|
|
350 *p = '"';
|
|
|
351
|
|
|
352 conf->realm.len = len;
|
|
|
353 conf->realm.data = realm;
|
|
|
354 }
|
|
|
355
|
|
|
356 } else {
|
|
|
357 conf->realm = prev->realm;
|
|
|
358 }
|
|
|
359
|
|
|
360
|
|
|
361 if (conf->user_file.data) {
|
|
|
362 if (ngx_conf_full_name(cf->cycle, &conf->user_file) != NGX_OK) {
|
|
|
363 return NGX_CONF_ERROR;
|
|
|
364 }
|
|
|
365
|
|
|
366 } else {
|
|
|
367 conf->user_file = prev->user_file;
|
|
|
368 }
|
|
|
369
|
|
|
370 return NGX_CONF_OK;
|
|
|
371 }
|
|
|
372
|
|
|
373
|
|
|
374 static ngx_int_t
|
|
|
375 ngx_http_auth_basic_init(ngx_cycle_t *cycle)
|
|
|
376 {
|
|
|
377 ngx_http_handler_pt *h;
|
|
|
378 ngx_http_core_main_conf_t *cmcf;
|
|
|
379
|
|
|
380 cmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_core_module);
|
|
|
381
|
|
|
382 h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers);
|
|
|
383 if (h == NULL) {
|
|
|
384 return NGX_ERROR;
|
|
|
385 }
|
|
|
386
|
|
|
387 *h = ngx_http_auth_basic_handler;
|
|
|
388
|
|
|
389 return NGX_OK;
|
|
|
390 }
|
|
|
391
|
|
|
392
|
|
|
393 static char *
|
|
|
394 ngx_http_auth_basic(ngx_conf_t *cf, void *post, void *data)
|
|
|
395 {
|
|
|
396 ngx_str_t *realm = data;
|
|
|
397
|
|
|
398 if (ngx_strcmp(realm->data, "off") == 0) {
|
|
|
399 realm->len = 0;
|
|
|
400 realm->data = (u_char *) "";
|
|
|
401 }
|
|
|
402
|
|
|
403 return NGX_CONF_OK;
|
|
|
404 }
|
