521
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9 #include <ngx_event.h>
|
|
10 #include <ngx_event_connect.h>
|
|
11 #include <ngx_imap.h>
|
|
12
|
|
13
|
|
14 typedef struct {
|
|
15 ngx_peers_t *peers;
|
|
16
|
|
17 ngx_msec_t timeout;
|
|
18
|
|
19 ngx_str_t host_header;
|
|
20 ngx_str_t uri;
|
|
21 } ngx_imap_auth_http_conf_t;
|
|
22
|
|
23
|
|
24 typedef struct {
|
|
25 ngx_buf_t *request;
|
|
26 ngx_peer_connection_t peer;
|
|
27 } ngx_imap_auth_http_ctx_t;
|
|
28
|
|
29
|
|
30 static void ngx_imap_auth_http_write_handler(ngx_event_t *wev);
|
|
31 static void ngx_imap_auth_http_read_handler(ngx_event_t *rev);
|
|
32 static void ngx_imap_auth_http_block_read(ngx_event_t *rev);
|
|
33 static void ngx_imap_auth_http_dummy_handler(ngx_event_t *ev);
|
|
34 static ngx_buf_t *ngx_imap_auth_http_create_request(ngx_imap_session_t *s,
|
|
35 ngx_imap_auth_http_conf_t *ahcf);
|
|
36
|
|
37 static void *ngx_imap_auth_http_create_conf(ngx_conf_t *cf);
|
|
38 static char *ngx_imap_auth_http_merge_conf(ngx_conf_t *cf, void *parent,
|
|
39 void *child);
|
|
40 static char *ngx_imap_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
|
|
41
|
|
42
|
|
43 static ngx_command_t ngx_imap_auth_http_commands[] = {
|
|
44
|
|
45 { ngx_string("auth_http"),
|
|
46 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
|
|
47 ngx_imap_auth_http,
|
|
48 NGX_IMAP_SRV_CONF_OFFSET,
|
|
49 0,
|
|
50 NULL },
|
|
51
|
|
52 { ngx_string("auth_http_timeout"),
|
|
53 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
|
|
54 ngx_conf_set_msec_slot,
|
|
55 NGX_IMAP_SRV_CONF_OFFSET,
|
|
56 offsetof(ngx_imap_auth_http_conf_t, timeout),
|
|
57 NULL },
|
|
58
|
|
59 ngx_null_command
|
|
60 };
|
|
61
|
|
62
|
|
63 static ngx_imap_module_t ngx_imap_auth_http_module_ctx = {
|
|
64 NULL, /* create main configuration */
|
|
65 NULL, /* init main configuration */
|
|
66
|
|
67 ngx_imap_auth_http_create_conf, /* create server configuration */
|
|
68 ngx_imap_auth_http_merge_conf /* merge server configuration */
|
|
69 };
|
|
70
|
|
71
|
|
72 ngx_module_t ngx_imap_auth_http_module = {
|
|
73 NGX_MODULE_V1,
|
|
74 &ngx_imap_auth_http_module_ctx, /* module context */
|
|
75 ngx_imap_auth_http_commands, /* module directives */
|
|
76 NGX_IMAP_MODULE, /* module type */
|
|
77 NULL, /* init module */
|
|
78 NULL /* init process */
|
|
79 };
|
|
80
|
|
81
|
|
82 static char *ngx_imap_auth_http_protocol[] = { "pop3", "imap" };
|
|
83
|
|
84
|
|
85 void
|
|
86 ngx_imap_auth_http_init(ngx_imap_session_t *s)
|
|
87 {
|
|
88 ngx_int_t rc;
|
|
89 ngx_imap_auth_http_ctx_t *ctx;
|
|
90 ngx_imap_auth_http_conf_t *ahcf;
|
|
91
|
|
92 ctx = ngx_pcalloc(s->connection->pool, sizeof(ngx_imap_auth_http_ctx_t));
|
|
93 if (ctx == NULL) {
|
|
94 ngx_imap_close_connection(s->connection);
|
|
95 return;
|
|
96 }
|
|
97
|
|
98 ahcf = ngx_imap_get_module_srv_conf(s, ngx_imap_auth_http_module);
|
|
99
|
|
100 ctx->request = ngx_imap_auth_http_create_request(s, ahcf);
|
|
101 if (ctx->request == NULL) {
|
|
102 ngx_imap_close_connection(s->connection);
|
|
103 return;
|
|
104 }
|
|
105
|
|
106 ngx_imap_set_ctx(s, ctx, ngx_imap_auth_http_module);
|
|
107
|
|
108 ctx->peer.peers = ahcf->peers;
|
|
109 ctx->peer.log = s->connection->log;
|
|
110 ctx->peer.log_error = NGX_ERROR_ERR;
|
|
111
|
|
112 rc = ngx_event_connect_peer(&ctx->peer);
|
|
113
|
|
114 if (rc == NGX_ERROR) {
|
|
115 ngx_imap_close_connection(s->connection);
|
|
116 return;
|
|
117 }
|
|
118
|
|
119 ctx->peer.connection->data = s;
|
|
120 ctx->peer.connection->pool = s->connection->pool;
|
|
121
|
|
122 s->connection->read->handler = ngx_imap_auth_http_block_read;
|
|
123 ctx->peer.connection->read->handler = ngx_imap_auth_http_read_handler;
|
|
124 ctx->peer.connection->write->handler = ngx_imap_auth_http_write_handler;
|
|
125
|
|
126 if (rc == NGX_OK) {
|
|
127 ngx_imap_auth_http_write_handler(ctx->peer.connection->write);
|
|
128 return;
|
|
129 }
|
|
130
|
|
131 ngx_add_timer(ctx->peer.connection->read, ahcf->timeout);
|
|
132 ngx_add_timer(ctx->peer.connection->write, ahcf->timeout);
|
|
133 }
|
|
134
|
|
135
|
|
136 static void
|
|
137 ngx_imap_auth_http_write_handler(ngx_event_t *wev)
|
|
138 {
|
|
139 ssize_t n, size;
|
|
140 ngx_connection_t *c;
|
|
141 ngx_imap_session_t *s;
|
|
142 ngx_imap_auth_http_ctx_t *ctx;
|
|
143 ngx_imap_auth_http_conf_t *ahcf;
|
|
144
|
|
145 c = wev->data;
|
|
146 s = c->data;
|
|
147
|
|
148 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
|
|
149
|
|
150 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, wev->log, 0,
|
|
151 "imap auth http write handler");
|
|
152
|
|
153 if (wev->timedout) {
|
|
154 ngx_log_error(NGX_LOG_ERR, wev->log, NGX_ETIMEDOUT,
|
|
155 "auth http server timed out");
|
|
156 ngx_imap_close_connection(ctx->peer.connection);
|
|
157 ngx_imap_close_connection(s->connection);
|
|
158 return;
|
|
159 }
|
|
160
|
|
161 size = ctx->request->last - ctx->request->pos;
|
|
162
|
|
163 n = ngx_send(c, ctx->request->pos, size);
|
|
164
|
|
165 if (n == NGX_ERROR) {
|
|
166 ngx_imap_close_connection(ctx->peer.connection);
|
|
167 ngx_imap_close_connection(s->connection);
|
|
168 return;
|
|
169 }
|
|
170
|
|
171 if (n > 0) {
|
|
172 ctx->request->pos += n;
|
|
173
|
|
174 if (n == size) {
|
|
175 wev->handler = ngx_imap_auth_http_dummy_handler;
|
|
176
|
|
177 if (wev->timer_set) {
|
|
178 ngx_del_timer(wev);
|
|
179 }
|
|
180
|
|
181 return;
|
|
182 }
|
|
183 }
|
|
184
|
|
185 if (!wev->timer_set) {
|
|
186 ahcf = ngx_imap_get_module_srv_conf(s, ngx_imap_auth_http_module);
|
|
187 ngx_add_timer(wev, ahcf->timeout);
|
|
188 }
|
|
189 }
|
|
190
|
|
191
|
|
192 static void
|
|
193 ngx_imap_auth_http_read_handler(ngx_event_t *rev)
|
|
194 {
|
|
195 ngx_peers_t *peers;
|
|
196 ngx_connection_t *c;
|
|
197 ngx_imap_session_t *s;
|
|
198 #if 0
|
|
199 ngx_imap_auth_http_ctx_t *ctx;
|
|
200 #endif
|
|
201
|
|
202 c = rev->data;
|
|
203 s = c->data;
|
|
204
|
|
205 #if 0
|
|
206 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
|
|
207 #endif
|
|
208
|
|
209 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
|
|
210 "imap auth http read handler");
|
|
211
|
|
212 peers = NULL;
|
|
213
|
|
214 ngx_imap_proxy_init(s, peers);
|
|
215 }
|
|
216
|
|
217
|
|
218 static void
|
|
219 ngx_imap_auth_http_block_read(ngx_event_t *rev)
|
|
220 {
|
|
221 ngx_connection_t *c;
|
|
222 ngx_imap_session_t *s;
|
|
223 ngx_imap_auth_http_ctx_t *ctx;
|
|
224
|
|
225 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
|
|
226 "imap auth http block read");
|
|
227
|
|
228 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
229 c = rev->data;
|
|
230 s = c->data;
|
|
231
|
|
232 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
|
|
233
|
|
234 ngx_imap_close_connection(ctx->peer.connection);
|
|
235 ngx_imap_close_connection(s->connection);
|
|
236 }
|
|
237 }
|
|
238
|
|
239
|
|
240 static void
|
|
241 ngx_imap_auth_http_dummy_handler(ngx_event_t *ev)
|
|
242 {
|
|
243 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, ev->log, 0,
|
|
244 "imap auth http dummy handler");
|
|
245 }
|
|
246
|
|
247
|
|
248 static ngx_buf_t *
|
|
249 ngx_imap_auth_http_create_request(ngx_imap_session_t *s,
|
|
250 ngx_imap_auth_http_conf_t *ahcf)
|
|
251 {
|
|
252 size_t len;
|
|
253 ngx_buf_t *b;
|
|
254
|
|
255 len = sizeof("GET ") - 1 + ahcf->uri.len + sizeof(" HTTP/1.0" CRLF) - 1
|
|
256 + sizeof("Host: ") - 1 + ahcf->host_header.len + sizeof(CRLF) - 1
|
|
257 + sizeof("Auth-Method: plain" CRLF) - 1
|
|
258 + sizeof("Auth-User: ") - 1 + s->login.len + sizeof(CRLF) - 1
|
|
259 + sizeof("Auth-Pass: ") - 1 + s->passwd.len + sizeof(CRLF) - 1
|
|
260 + sizeof("Auth-Protocol: imap" CRLF) - 1
|
|
261 + sizeof("Client-IP: ") - 1 + s->connection->addr_text.len
|
|
262 + sizeof(CRLF) - 1
|
|
263 + sizeof(CRLF) - 1;
|
|
264
|
|
265 b = ngx_create_temp_buf(s->connection->pool, len);
|
|
266 if (b == NULL) {
|
|
267 return NULL;
|
|
268 }
|
|
269
|
|
270 b->last = ngx_cpymem(b->last, "GET ", sizeof("GET ") - 1);
|
|
271 b->last = ngx_cpymem(b->last, ahcf->uri.data, ahcf->uri.len);
|
|
272 b->last = ngx_cpymem(b->last, " HTTP/1.0" CRLF,
|
|
273 sizeof(" HTTP/1.0" CRLF) - 1);
|
|
274
|
|
275 b->last = ngx_cpymem(b->last, "Host: ", sizeof("Host: ") - 1);
|
|
276 b->last = ngx_cpymem(b->last, ahcf->host_header.data,
|
|
277 ahcf->host_header.len);
|
|
278 *b->last++ = CR; *b->last++ = LF;
|
|
279
|
|
280 b->last = ngx_cpymem(b->last, "Auth-Method: plain" CRLF,
|
|
281 sizeof("Auth-Method: plain" CRLF) - 1);
|
|
282
|
|
283 b->last = ngx_cpymem(b->last, "Auth-User: ", sizeof("Auth-User: ") - 1);
|
|
284 b->last = ngx_cpymem(b->last, s->login.data, s->login.len);
|
|
285 *b->last++ = CR; *b->last++ = LF;
|
|
286
|
|
287 b->last = ngx_cpymem(b->last, "Auth-Pass: ", sizeof("Auth-Pass: ") - 1);
|
|
288 b->last = ngx_cpymem(b->last, s->passwd.data, s->passwd.len);
|
|
289 *b->last++ = CR; *b->last++ = LF;
|
|
290
|
|
291 b->last = ngx_cpymem(b->last, "Auth-Protocol: ",
|
|
292 sizeof("Auth-Protocol: ") - 1);
|
|
293 b->last = ngx_cpymem(b->last, ngx_imap_auth_http_protocol[s->protocol],
|
|
294 sizeof("imap") - 1);
|
|
295 *b->last++ = CR; *b->last++ = LF;
|
|
296
|
|
297 b->last = ngx_cpymem(b->last, "Client-IP: ", sizeof("Client-IP: ") - 1);
|
|
298 b->last = ngx_cpymem(b->last, s->connection->addr_text.data,
|
|
299 s->connection->addr_text.len);
|
|
300 *b->last++ = CR; *b->last++ = LF;
|
|
301
|
|
302 /* add "\r\n" at the header end */
|
|
303 *b->last++ = CR; *b->last++ = LF;
|
|
304
|
|
305 #if (NGX_DEBUG)
|
|
306 {
|
|
307 ngx_str_t l;
|
|
308
|
|
309 l.len = b->last - b->pos;
|
|
310 l.data = b->pos;
|
|
311 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, s->connection->log, 0,
|
|
312 "imap auth http header:\n\"%V\"", &l);
|
|
313 }
|
|
314 #endif
|
|
315
|
|
316 return b;
|
|
317 }
|
|
318
|
|
319
|
|
320 static void *
|
|
321 ngx_imap_auth_http_create_conf(ngx_conf_t *cf)
|
|
322 {
|
|
323 ngx_imap_auth_http_conf_t *ahcf;
|
|
324
|
|
325 ahcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_auth_http_conf_t));
|
|
326 if (ahcf == NULL) {
|
|
327 return NGX_CONF_ERROR;
|
|
328 }
|
|
329
|
|
330 ahcf->timeout = NGX_CONF_UNSET_MSEC;
|
|
331
|
|
332 return ahcf;
|
|
333 }
|
|
334
|
|
335
|
|
336 static char *
|
|
337 ngx_imap_auth_http_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
338 {
|
|
339 ngx_imap_auth_http_conf_t *prev = parent;
|
|
340 ngx_imap_auth_http_conf_t *conf = child;
|
|
341
|
|
342 if (conf->peers == NULL) {
|
|
343 conf->peers = prev->peers;
|
|
344 conf->host_header = prev->host_header;
|
|
345 conf->uri = prev->uri;
|
|
346 }
|
|
347
|
|
348 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
|
|
349
|
|
350 return NGX_CONF_OK;
|
|
351 }
|
|
352
|
|
353
|
|
354 static char *
|
|
355 ngx_imap_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
356 {
|
|
357 ngx_imap_auth_http_conf_t *ahcf = conf;
|
|
358
|
|
359 ngx_uint_t i;
|
|
360 ngx_str_t *value, *url;
|
|
361 ngx_inet_upstream_t inet_upstream;
|
|
362 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
363 ngx_unix_domain_upstream_t unix_upstream;
|
|
364 #endif
|
|
365
|
|
366 value = cf->args->elts;
|
|
367
|
|
368 url = &value[1];
|
|
369
|
|
370 if (ngx_strncasecmp(url->data, "unix:", 5) == 0) {
|
|
371
|
|
372 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
373
|
|
374 ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
|
|
375
|
|
376 unix_upstream.name = *url;
|
|
377 unix_upstream.url = *url;
|
|
378 unix_upstream.uri_part = 1;
|
|
379
|
|
380 ahcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
|
|
381 if (ahcf->peers == NULL) {
|
|
382 return NGX_CONF_ERROR;
|
|
383 }
|
|
384
|
|
385 ahcf->peers->peer[0].uri_separator = ":";
|
|
386
|
|
387 ahcf->host_header.len = sizeof("localhost") - 1;
|
|
388 ahcf->host_header.data = (u_char *) "localhost";
|
|
389 ahcf->uri = unix_upstream.uri;
|
|
390
|
|
391 #else
|
|
392 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
393 "the unix domain sockets are not supported "
|
|
394 "on this platform");
|
|
395 return NGX_CONF_ERROR;
|
|
396
|
|
397 #endif
|
|
398
|
|
399 } else {
|
|
400 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
401
|
|
402 inet_upstream.name = *url;
|
|
403 inet_upstream.url = *url;
|
|
404 inet_upstream.default_port_value = 80;
|
|
405 inet_upstream.uri_part = 1;
|
|
406
|
|
407 ahcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
|
|
408 if (ahcf->peers == NULL) {
|
|
409 return NGX_CONF_ERROR;
|
|
410 }
|
|
411
|
|
412 for (i = 0; i < ahcf->peers->number; i++) {
|
|
413 ahcf->peers->peer[i].uri_separator = ":";
|
|
414 }
|
|
415
|
|
416 ahcf->host_header = inet_upstream.host_header;
|
|
417 ahcf->uri = inet_upstream.uri;
|
|
418 }
|
|
419
|
|
420 return NGX_CONF_OK;
|
|
421 }
|