76
|
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_imap.h>
|
|
11
|
|
12
|
|
13 static void *ngx_imap_core_create_main_conf(ngx_conf_t *cf);
|
|
14 static void *ngx_imap_core_create_srv_conf(ngx_conf_t *cf);
|
|
15 static char *ngx_imap_core_merge_srv_conf(ngx_conf_t *cf, void *parent,
|
|
16 void *child);
|
|
17 static char *ngx_imap_core_server(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
18 void *conf);
|
|
19 static char *ngx_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
20 void *conf);
|
|
21 static char *ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
22 void *conf);
|
|
23
|
|
24
|
|
25 static ngx_conf_enum_t ngx_imap_core_procotol[] = {
|
|
26 { ngx_string("pop3"), NGX_IMAP_POP3_PROTOCOL },
|
|
27 { ngx_string("imap"), NGX_IMAP_IMAP_PROTOCOL },
|
|
28 { ngx_null_string, 0 }
|
|
29 };
|
|
30
|
|
31
|
|
32 static ngx_str_t ngx_pop3_default_capabilities[] = {
|
|
33 ngx_string("TOP"),
|
|
34 ngx_string("USER"),
|
|
35 ngx_string("UIDL"),
|
|
36 ngx_null_string
|
|
37 };
|
|
38
|
|
39
|
|
40 static ngx_str_t ngx_imap_default_capabilities[] = {
|
|
41 ngx_string("IMAP4"),
|
|
42 ngx_string("IMAP4rev1"),
|
|
43 ngx_string("UIDPLUS"),
|
|
44 ngx_null_string
|
|
45 };
|
|
46
|
|
47
|
|
48 static ngx_command_t ngx_imap_core_commands[] = {
|
|
49
|
|
50 { ngx_string("server"),
|
|
51 NGX_IMAP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
|
|
52 ngx_imap_core_server,
|
|
53 0,
|
|
54 0,
|
|
55 NULL },
|
|
56
|
|
57 { ngx_string("listen"),
|
|
58 NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
|
|
59 ngx_imap_core_listen,
|
|
60 0,
|
|
61 0,
|
|
62 NULL },
|
|
63
|
|
64 { ngx_string("protocol"),
|
|
65 NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
|
|
66 ngx_conf_set_enum_slot,
|
|
67 NGX_IMAP_SRV_CONF_OFFSET,
|
|
68 offsetof(ngx_imap_core_srv_conf_t, protocol),
|
|
69 &ngx_imap_core_procotol },
|
|
70
|
|
71 { ngx_string("imap_client_buffer"),
|
|
72 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
|
|
73 ngx_conf_set_size_slot,
|
|
74 NGX_IMAP_SRV_CONF_OFFSET,
|
|
75 offsetof(ngx_imap_core_srv_conf_t, imap_client_buffer_size),
|
|
76 NULL },
|
|
77
|
|
78 { ngx_string("timeout"),
|
|
79 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
|
|
80 ngx_conf_set_msec_slot,
|
|
81 NGX_IMAP_SRV_CONF_OFFSET,
|
|
82 offsetof(ngx_imap_core_srv_conf_t, timeout),
|
|
83 NULL },
|
|
84
|
|
85 { ngx_string("pop3_capabilities"),
|
|
86 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE,
|
|
87 ngx_imap_core_capability,
|
|
88 NGX_IMAP_SRV_CONF_OFFSET,
|
|
89 offsetof(ngx_imap_core_srv_conf_t, pop3_capabilities),
|
|
90 NULL },
|
|
91
|
|
92 { ngx_string("imap_capabilities"),
|
|
93 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE,
|
|
94 ngx_imap_core_capability,
|
|
95 NGX_IMAP_SRV_CONF_OFFSET,
|
|
96 offsetof(ngx_imap_core_srv_conf_t, imap_capabilities),
|
|
97 NULL },
|
|
98
|
|
99 ngx_null_command
|
|
100 };
|
|
101
|
|
102
|
|
103 static ngx_imap_module_t ngx_imap_core_module_ctx = {
|
|
104 ngx_imap_core_create_main_conf, /* create main configuration */
|
|
105 NULL, /* init main configuration */
|
|
106
|
|
107 ngx_imap_core_create_srv_conf, /* create server configuration */
|
|
108 ngx_imap_core_merge_srv_conf /* merge server configuration */
|
|
109 };
|
|
110
|
|
111
|
|
112 ngx_module_t ngx_imap_core_module = {
|
|
113 NGX_MODULE_V1,
|
|
114 &ngx_imap_core_module_ctx, /* module context */
|
|
115 ngx_imap_core_commands, /* module directives */
|
|
116 NGX_IMAP_MODULE, /* module type */
|
90
|
117 NULL, /* init master */
|
76
|
118 NULL, /* init module */
|
90
|
119 NULL, /* init process */
|
|
120 NULL, /* init thread */
|
|
121 NULL, /* exit thread */
|
|
122 NULL, /* exit process */
|
|
123 NULL, /* exit master */
|
|
124 NGX_MODULE_V1_PADDING
|
76
|
125 };
|
|
126
|
|
127
|
|
128 static void *
|
|
129 ngx_imap_core_create_main_conf(ngx_conf_t *cf)
|
|
130 {
|
|
131 ngx_imap_core_main_conf_t *cmcf;
|
|
132
|
|
133 cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_main_conf_t));
|
|
134 if (cmcf == NULL) {
|
|
135 return NGX_CONF_ERROR;
|
|
136 }
|
|
137
|
|
138 if (ngx_array_init(&cmcf->servers, cf->pool, 4,
|
|
139 sizeof(ngx_imap_core_srv_conf_t *)) == NGX_ERROR)
|
|
140 {
|
|
141 return NGX_CONF_ERROR;
|
|
142 }
|
|
143
|
|
144 return cmcf;
|
|
145 }
|
|
146
|
|
147
|
|
148 static void *
|
|
149 ngx_imap_core_create_srv_conf(ngx_conf_t *cf)
|
|
150 {
|
|
151 ngx_imap_core_srv_conf_t *cscf;
|
|
152
|
|
153 cscf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_srv_conf_t));
|
|
154 if (cscf == NULL) {
|
|
155 return NULL;
|
|
156 }
|
|
157
|
|
158 cscf->imap_client_buffer_size = NGX_CONF_UNSET_SIZE;
|
|
159 cscf->timeout = NGX_CONF_UNSET_MSEC;
|
|
160 cscf->protocol = NGX_CONF_UNSET_UINT;
|
|
161
|
|
162 if (ngx_array_init(&cscf->pop3_capabilities, cf->pool, 4, sizeof(ngx_str_t))
|
|
163 != NGX_OK)
|
|
164 {
|
|
165 return NULL;
|
|
166 }
|
|
167
|
|
168 if (ngx_array_init(&cscf->imap_capabilities, cf->pool, 4, sizeof(ngx_str_t))
|
|
169 != NGX_OK)
|
|
170 {
|
|
171 return NULL;
|
|
172 }
|
|
173
|
|
174 return cscf;
|
|
175 }
|
|
176
|
|
177
|
|
178 static char *
|
|
179 ngx_imap_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
180 {
|
|
181 ngx_imap_core_srv_conf_t *prev = parent;
|
|
182 ngx_imap_core_srv_conf_t *conf = child;
|
|
183
|
|
184 size_t size;
|
|
185 ngx_buf_t *b;
|
|
186 ngx_str_t *c, *d;
|
|
187 ngx_uint_t i;
|
|
188
|
|
189 ngx_conf_merge_size_value(conf->imap_client_buffer_size,
|
|
190 prev->imap_client_buffer_size,
|
|
191 (size_t) ngx_pagesize);
|
|
192 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
|
|
193 ngx_conf_merge_unsigned_value(conf->protocol, prev->protocol,
|
|
194 NGX_IMAP_IMAP_PROTOCOL);
|
|
195
|
|
196
|
|
197 if (conf->pop3_capabilities.nelts == 0) {
|
|
198 conf->pop3_capabilities = prev->pop3_capabilities;
|
|
199 }
|
|
200
|
|
201 if (conf->pop3_capabilities.nelts == 0) {
|
|
202
|
|
203 for (d = ngx_pop3_default_capabilities; d->len; d++) {
|
|
204 c = ngx_array_push(&conf->pop3_capabilities);
|
|
205 if (c == NULL) {
|
|
206 return NGX_CONF_ERROR;
|
|
207 }
|
|
208
|
|
209 *c = *d;
|
|
210 }
|
|
211 }
|
|
212
|
|
213 size = sizeof("+OK Capability list follows" CRLF) - 1
|
|
214 + sizeof("." CRLF) - 1;
|
|
215
|
|
216 c = conf->pop3_capabilities.elts;
|
|
217 for (i = 0; i < conf->pop3_capabilities.nelts; i++) {
|
|
218 size += c[i].len + sizeof(CRLF) - 1;
|
|
219 }
|
|
220
|
|
221 b = ngx_create_temp_buf(cf->pool, size);
|
|
222 if (b == NULL) {
|
|
223 return NGX_CONF_ERROR;
|
|
224 }
|
|
225
|
|
226 b->last = ngx_cpymem(b->last, "+OK Capability list follows" CRLF,
|
|
227 sizeof("+OK Capability list follows" CRLF) - 1);
|
|
228
|
|
229 for (i = 0; i < conf->pop3_capabilities.nelts; i++) {
|
|
230 b->last = ngx_cpymem(b->last, c[i].data, c[i].len);
|
|
231 *b->last++ = CR; *b->last++ = LF;
|
|
232 }
|
|
233
|
|
234 *b->last++ = '.'; *b->last++ = CR; *b->last++ = LF;
|
|
235
|
|
236 conf->pop3_capability = b;
|
|
237
|
|
238
|
|
239 if (conf->imap_capabilities.nelts == 0) {
|
|
240 conf->imap_capabilities = prev->imap_capabilities;
|
|
241 }
|
|
242
|
|
243 if (conf->imap_capabilities.nelts == 0) {
|
|
244
|
|
245 for (d = ngx_imap_default_capabilities; d->len; d++) {
|
|
246 c = ngx_array_push(&conf->imap_capabilities);
|
|
247 if (c == NULL) {
|
|
248 return NGX_CONF_ERROR;
|
|
249 }
|
|
250
|
|
251 *c = *d;
|
|
252 }
|
|
253 }
|
|
254
|
|
255 size = sizeof("* CAPABILITY") - 1 + sizeof(CRLF) - 1;
|
|
256
|
|
257 c = conf->imap_capabilities.elts;
|
|
258 for (i = 0; i < conf->imap_capabilities.nelts; i++) {
|
|
259 size += 1 + c[i].len;
|
|
260 }
|
|
261
|
|
262 b = ngx_create_temp_buf(cf->pool, size);
|
|
263 if (b == NULL) {
|
|
264 return NGX_CONF_ERROR;
|
|
265 }
|
|
266
|
|
267 b->last = ngx_cpymem(b->last, "* CAPABILITY", sizeof("* CAPABILITY") - 1);
|
|
268
|
|
269 for (i = 0; i < conf->imap_capabilities.nelts; i++) {
|
|
270 *b->last++ = ' ';
|
|
271 b->last = ngx_cpymem(b->last, c[i].data, c[i].len);
|
|
272 }
|
|
273
|
|
274 *b->last++ = CR; *b->last++ = LF;
|
|
275
|
|
276 conf->imap_capability = b;
|
|
277
|
|
278 return NGX_CONF_OK;
|
|
279 }
|
|
280
|
|
281
|
|
282 static char *
|
|
283 ngx_imap_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
284 {
|
|
285 char *rv;
|
|
286 void *mconf;
|
|
287 ngx_uint_t m;
|
|
288 ngx_conf_t pcf;
|
|
289 ngx_imap_module_t *module;
|
|
290 ngx_imap_conf_ctx_t *ctx, *imap_ctx;
|
|
291 ngx_imap_core_srv_conf_t *cscf, **cscfp;
|
|
292 ngx_imap_core_main_conf_t *cmcf;
|
|
293
|
|
294
|
|
295 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_imap_conf_ctx_t));
|
|
296 if (ctx == NULL) {
|
|
297 return NGX_CONF_ERROR;
|
|
298 }
|
|
299
|
|
300 imap_ctx = cf->ctx;
|
|
301 ctx->main_conf = imap_ctx->main_conf;
|
|
302
|
|
303 /* the server{}'s srv_conf */
|
|
304
|
|
305 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_imap_max_module);
|
|
306 if (ctx->srv_conf == NULL) {
|
|
307 return NGX_CONF_ERROR;
|
|
308 }
|
|
309
|
|
310 for (m = 0; ngx_modules[m]; m++) {
|
|
311 if (ngx_modules[m]->type != NGX_IMAP_MODULE) {
|
|
312 continue;
|
|
313 }
|
|
314
|
|
315 module = ngx_modules[m]->ctx;
|
|
316
|
|
317 if (module->create_srv_conf) {
|
|
318 mconf = module->create_srv_conf(cf);
|
|
319 if (mconf == NULL) {
|
|
320 return NGX_CONF_ERROR;
|
|
321 }
|
|
322
|
|
323 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
324 }
|
|
325 }
|
|
326
|
|
327 /* the server configuration context */
|
|
328
|
|
329 cscf = ctx->srv_conf[ngx_imap_core_module.ctx_index];
|
|
330 cscf->ctx = ctx;
|
|
331
|
|
332 cmcf = ctx->main_conf[ngx_imap_core_module.ctx_index];
|
|
333
|
|
334 cscfp = ngx_array_push(&cmcf->servers);
|
|
335 if (cscfp == NULL) {
|
|
336 return NGX_CONF_ERROR;
|
|
337 }
|
|
338
|
|
339 *cscfp = cscf;
|
|
340
|
|
341
|
|
342 /* parse inside server{} */
|
|
343
|
|
344 pcf = *cf;
|
|
345 cf->ctx = ctx;
|
|
346 cf->cmd_type = NGX_IMAP_SRV_CONF;
|
|
347
|
|
348 rv = ngx_conf_parse(cf, NULL);
|
|
349
|
|
350 *cf = pcf;
|
|
351
|
|
352 return rv;
|
|
353 }
|
|
354
|
|
355
|
|
356 /* AF_INET only */
|
|
357
|
|
358 static char *
|
|
359 ngx_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
360 {
|
|
361 char *err;
|
|
362 ngx_str_t *value;
|
|
363 in_addr_t in_addr;
|
|
364 struct hostent *h;
|
|
365 ngx_listening_t *ls;
|
|
366 ngx_inet_upstream_t inet_upstream;
|
|
367
|
|
368 value = cf->args->elts;
|
|
369
|
|
370 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
371
|
|
372 inet_upstream.url = value[1];
|
|
373 inet_upstream.port_only = 1;
|
|
374
|
|
375 err = ngx_inet_parse_host_port(&inet_upstream);
|
|
376
|
|
377 if (err) {
|
|
378 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
379 "%s in \"%V\" of the \"listen\" directive",
|
|
380 err, &inet_upstream.url);
|
|
381 return NGX_CONF_ERROR;
|
|
382 }
|
|
383
|
|
384 if (inet_upstream.host.len) {
|
|
385 inet_upstream.host.data[inet_upstream.host.len] = '\0';
|
|
386
|
|
387 in_addr = inet_addr((const char *) inet_upstream.host.data);
|
|
388
|
|
389 if (in_addr == INADDR_NONE) {
|
|
390 h = gethostbyname((const char *) inet_upstream.host.data);
|
|
391
|
|
392 if (h == NULL || h->h_addr_list[0] == NULL) {
|
|
393 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
394 "can not resolve host \"%s\" "
|
|
395 "in the \"listen\" directive",
|
|
396 inet_upstream.host.data);
|
|
397 return NGX_CONF_ERROR;
|
|
398 }
|
|
399
|
|
400 in_addr = *(in_addr_t *)(h->h_addr_list[0]);
|
|
401 }
|
|
402
|
|
403 } else {
|
|
404 in_addr = INADDR_ANY;
|
|
405 }
|
|
406
|
|
407
|
|
408 ls = ngx_listening_inet_stream_socket(cf, in_addr, inet_upstream.port);
|
|
409 if (ls == NULL) {
|
|
410 return NGX_CONF_ERROR;
|
|
411 }
|
|
412
|
|
413 ls->backlog = -1;
|
|
414 ls->addr_ntop = 1;
|
|
415 ls->handler = ngx_imap_init_connection;
|
|
416 ls->pool_size = 256;
|
|
417
|
|
418 ls->ctx = cf->ctx;
|
|
419
|
|
420 /* STUB */
|
|
421 ls->log = cf->cycle->new_log;
|
|
422 /**/
|
|
423
|
|
424 return NGX_CONF_OK;
|
|
425 }
|
|
426
|
|
427
|
|
428 static char *
|
|
429 ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
430 {
|
|
431 char *p = conf;
|
|
432
|
|
433 ngx_str_t *c, *value;
|
|
434 ngx_uint_t i;
|
|
435 ngx_array_t *a;
|
|
436
|
|
437 a = (ngx_array_t *) (p + cmd->offset);
|
|
438
|
|
439 value = cf->args->elts;
|
|
440
|
|
441 for (i = 1; i < cf->args->nelts; i++) {
|
|
442 c = ngx_array_push(a);
|
|
443 if (c == NULL) {
|
|
444 return NGX_CONF_ERROR;
|
|
445 }
|
|
446
|
|
447 *c = value[i];
|
|
448 }
|
|
449
|
|
450 return NGX_CONF_OK;
|
|
451 }
|