Mercurial > hg > nginx-quic
annotate src/event/modules/ngx_eventport_module.c @ 7314:3dfc1584ad75
Stream ssl_preread: $ssl_preread_protocol variable.
The variable keeps the latest SSL protocol version supported by the client.
The variable has the same format as $ssl_protocol.
The version is read from the client_version field of ClientHello. If the
supported_versions extension is present in the ClientHello, then the version
is set to TLSv1.3.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Wed, 11 Jul 2018 17:56:51 +0300 |
parents | cbf59d483c9c |
children | 3c51385e5da1 |
rev | line source |
---|---|
719 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
719 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_event.h> | |
11 | |
12 | |
13 #if (NGX_TEST_BUILD_EVENTPORT) | |
14 | |
15 #define ushort_t u_short | |
16 #define uint_t u_int | |
17 | |
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18 #ifndef CLOCK_REALTIME |
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19 #define CLOCK_REALTIME 0 |
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20 typedef int clockid_t; |
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21 typedef void * timer_t; |
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22 #elif (NGX_DARWIN) |
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23 typedef void * timer_t; |
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24 #endif |
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25 |
719 | 26 /* Solaris declarations */ |
27 | |
28 #define PORT_SOURCE_AIO 1 | |
29 #define PORT_SOURCE_TIMER 2 | |
30 #define PORT_SOURCE_USER 3 | |
31 #define PORT_SOURCE_FD 4 | |
32 #define PORT_SOURCE_ALERT 5 | |
33 #define PORT_SOURCE_MQ 6 | |
34 | |
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35 #ifndef ETIME |
719 | 36 #define ETIME 64 |
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37 #endif |
719 | 38 |
39 #define SIGEV_PORT 4 | |
40 | |
41 typedef struct { | |
42 int portev_events; /* event data is source specific */ | |
43 ushort_t portev_source; /* event source */ | |
44 ushort_t portev_pad; /* port internal use */ | |
45 uintptr_t portev_object; /* source specific object */ | |
46 void *portev_user; /* user cookie */ | |
47 } port_event_t; | |
48 | |
49 typedef struct port_notify { | |
50 int portnfy_port; /* bind request(s) to port */ | |
51 void *portnfy_user; /* user defined */ | |
52 } port_notify_t; | |
53 | |
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54 #if (__FreeBSD__ && __FreeBSD_version < 700005) || (NGX_DARWIN) |
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55 |
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56 typedef struct itimerspec { /* definition per POSIX.4 */ |
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57 struct timespec it_interval;/* timer period */ |
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58 struct timespec it_value; /* timer expiration */ |
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59 } itimerspec_t; |
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60 |
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61 #endif |
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62 |
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63 int port_create(void); |
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64 |
719 | 65 int port_create(void) |
66 { | |
67 return -1; | |
68 } | |
69 | |
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70 |
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71 int port_associate(int port, int source, uintptr_t object, int events, |
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72 void *user); |
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73 |
719 | 74 int port_associate(int port, int source, uintptr_t object, int events, |
75 void *user) | |
76 { | |
77 return -1; | |
78 } | |
79 | |
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80 |
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81 int port_dissociate(int port, int source, uintptr_t object); |
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82 |
719 | 83 int port_dissociate(int port, int source, uintptr_t object) |
84 { | |
85 return -1; | |
86 } | |
87 | |
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88 |
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89 int port_getn(int port, port_event_t list[], uint_t max, uint_t *nget, |
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90 struct timespec *timeout); |
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91 |
719 | 92 int port_getn(int port, port_event_t list[], uint_t max, uint_t *nget, |
93 struct timespec *timeout) | |
94 { | |
95 return -1; | |
96 } | |
97 | |
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98 int port_send(int port, int events, void *user); |
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99 |
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100 int port_send(int port, int events, void *user) |
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101 { |
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102 return -1; |
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103 } |
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104 |
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105 |
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106 int timer_create(clockid_t clock_id, struct sigevent *evp, timer_t *timerid); |
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107 |
719 | 108 int timer_create(clockid_t clock_id, struct sigevent *evp, timer_t *timerid) |
109 { | |
110 return -1; | |
111 } | |
112 | |
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113 |
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114 int timer_settime(timer_t timerid, int flags, const struct itimerspec *value, |
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115 struct itimerspec *ovalue); |
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116 |
719 | 117 int timer_settime(timer_t timerid, int flags, const struct itimerspec *value, |
118 struct itimerspec *ovalue) | |
119 { | |
120 return -1; | |
121 } | |
122 | |
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123 |
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124 int timer_delete(timer_t timerid); |
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125 |
719 | 126 int timer_delete(timer_t timerid) |
127 { | |
128 return -1; | |
129 } | |
130 | |
131 #endif | |
132 | |
133 | |
134 typedef struct { | |
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135 ngx_uint_t events; |
719 | 136 } ngx_eventport_conf_t; |
137 | |
138 | |
139 static ngx_int_t ngx_eventport_init(ngx_cycle_t *cycle, ngx_msec_t timer); | |
140 static void ngx_eventport_done(ngx_cycle_t *cycle); | |
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141 static ngx_int_t ngx_eventport_add_event(ngx_event_t *ev, ngx_int_t event, |
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142 ngx_uint_t flags); |
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143 static ngx_int_t ngx_eventport_del_event(ngx_event_t *ev, ngx_int_t event, |
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144 ngx_uint_t flags); |
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145 static ngx_int_t ngx_eventport_notify(ngx_event_handler_pt handler); |
719 | 146 static ngx_int_t ngx_eventport_process_events(ngx_cycle_t *cycle, |
147 ngx_msec_t timer, ngx_uint_t flags); | |
148 | |
149 static void *ngx_eventport_create_conf(ngx_cycle_t *cycle); | |
150 static char *ngx_eventport_init_conf(ngx_cycle_t *cycle, void *conf); | |
151 | |
152 static int ep = -1; | |
153 static port_event_t *event_list; | |
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154 static ngx_uint_t nevents; |
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155 static timer_t event_timer = (timer_t) -1; |
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156 static ngx_event_t notify_event; |
719 | 157 |
158 static ngx_str_t eventport_name = ngx_string("eventport"); | |
159 | |
160 | |
161 static ngx_command_t ngx_eventport_commands[] = { | |
162 | |
163 { ngx_string("eventport_events"), | |
164 NGX_EVENT_CONF|NGX_CONF_TAKE1, | |
165 ngx_conf_set_num_slot, | |
166 0, | |
167 offsetof(ngx_eventport_conf_t, events), | |
168 NULL }, | |
169 | |
170 ngx_null_command | |
171 }; | |
172 | |
173 | |
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174 static ngx_event_module_t ngx_eventport_module_ctx = { |
719 | 175 &eventport_name, |
176 ngx_eventport_create_conf, /* create configuration */ | |
177 ngx_eventport_init_conf, /* init configuration */ | |
178 | |
179 { | |
180 ngx_eventport_add_event, /* add an event */ | |
181 ngx_eventport_del_event, /* delete an event */ | |
182 ngx_eventport_add_event, /* enable an event */ | |
183 ngx_eventport_del_event, /* disable an event */ | |
184 NULL, /* add an connection */ | |
185 NULL, /* delete an connection */ | |
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186 ngx_eventport_notify, /* trigger a notify */ |
719 | 187 ngx_eventport_process_events, /* process the events */ |
188 ngx_eventport_init, /* init the events */ | |
189 ngx_eventport_done, /* done the events */ | |
190 } | |
191 | |
192 }; | |
193 | |
194 ngx_module_t ngx_eventport_module = { | |
195 NGX_MODULE_V1, | |
196 &ngx_eventport_module_ctx, /* module context */ | |
197 ngx_eventport_commands, /* module directives */ | |
198 NGX_EVENT_MODULE, /* module type */ | |
199 NULL, /* init master */ | |
200 NULL, /* init module */ | |
201 NULL, /* init process */ | |
202 NULL, /* init thread */ | |
203 NULL, /* exit thread */ | |
204 NULL, /* exit process */ | |
205 NULL, /* exit master */ | |
206 NGX_MODULE_V1_PADDING | |
207 }; | |
208 | |
209 | |
210 static ngx_int_t | |
211 ngx_eventport_init(ngx_cycle_t *cycle, ngx_msec_t timer) | |
212 { | |
213 port_notify_t pn; | |
214 struct itimerspec its; | |
215 struct sigevent sev; | |
216 ngx_eventport_conf_t *epcf; | |
217 | |
218 epcf = ngx_event_get_conf(cycle->conf_ctx, ngx_eventport_module); | |
219 | |
220 if (ep == -1) { | |
221 ep = port_create(); | |
222 | |
223 if (ep == -1) { | |
224 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, | |
225 "port_create() failed"); | |
226 return NGX_ERROR; | |
227 } | |
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228 |
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229 notify_event.active = 1; |
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230 notify_event.log = cycle->log; |
719 | 231 } |
232 | |
233 if (nevents < epcf->events) { | |
234 if (event_list) { | |
235 ngx_free(event_list); | |
236 } | |
237 | |
238 event_list = ngx_alloc(sizeof(port_event_t) * epcf->events, | |
239 cycle->log); | |
240 if (event_list == NULL) { | |
241 return NGX_ERROR; | |
242 } | |
243 } | |
244 | |
245 ngx_event_flags = NGX_USE_EVENTPORT_EVENT; | |
246 | |
247 if (timer) { | |
248 ngx_memzero(&pn, sizeof(port_notify_t)); | |
249 pn.portnfy_port = ep; | |
250 | |
251 ngx_memzero(&sev, sizeof(struct sigevent)); | |
252 sev.sigev_notify = SIGEV_PORT; | |
253 #if !(NGX_TEST_BUILD_EVENTPORT) | |
254 sev.sigev_value.sival_ptr = &pn; | |
255 #endif | |
256 | |
257 if (timer_create(CLOCK_REALTIME, &sev, &event_timer) == -1) { | |
258 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, | |
259 "timer_create() failed"); | |
260 return NGX_ERROR; | |
261 } | |
262 | |
263 its.it_interval.tv_sec = timer / 1000; | |
264 its.it_interval.tv_nsec = (timer % 1000) * 1000000; | |
265 its.it_value.tv_sec = timer / 1000; | |
266 its.it_value.tv_nsec = (timer % 1000) * 1000000; | |
267 | |
268 if (timer_settime(event_timer, 0, &its, NULL) == -1) { | |
269 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, | |
270 "timer_settime() failed"); | |
271 return NGX_ERROR; | |
272 } | |
273 | |
274 ngx_event_flags |= NGX_USE_TIMER_EVENT; | |
275 } | |
276 | |
277 nevents = epcf->events; | |
278 | |
279 ngx_io = ngx_os_io; | |
280 | |
281 ngx_event_actions = ngx_eventport_module_ctx.actions; | |
282 | |
283 return NGX_OK; | |
284 } | |
285 | |
286 | |
287 static void | |
288 ngx_eventport_done(ngx_cycle_t *cycle) | |
289 { | |
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290 if (event_timer != (timer_t) -1) { |
719 | 291 if (timer_delete(event_timer) == -1) { |
292 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
293 "timer_delete() failed"); | |
294 } | |
295 | |
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296 event_timer = (timer_t) -1; |
719 | 297 } |
298 | |
299 if (close(ep) == -1) { | |
300 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, | |
301 "close() event port failed"); | |
302 } | |
303 | |
304 ep = -1; | |
305 | |
306 ngx_free(event_list); | |
307 | |
308 event_list = NULL; | |
309 nevents = 0; | |
310 } | |
311 | |
312 | |
313 static ngx_int_t | |
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314 ngx_eventport_add_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags) |
719 | 315 { |
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316 ngx_int_t events, prev; |
719 | 317 ngx_event_t *e; |
318 ngx_connection_t *c; | |
319 | |
320 c = ev->data; | |
321 | |
322 events = event; | |
323 | |
324 if (event == NGX_READ_EVENT) { | |
325 e = c->write; | |
326 prev = POLLOUT; | |
327 #if (NGX_READ_EVENT != POLLIN) | |
328 events = POLLIN; | |
329 #endif | |
330 | |
331 } else { | |
332 e = c->read; | |
333 prev = POLLIN; | |
334 #if (NGX_WRITE_EVENT != POLLOUT) | |
335 events = POLLOUT; | |
336 #endif | |
337 } | |
338 | |
339 if (e->oneshot) { | |
340 events |= prev; | |
341 } | |
342 | |
343 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, | |
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344 "eventport add event: fd:%d ev:%04Xi", c->fd, events); |
719 | 345 |
346 if (port_associate(ep, PORT_SOURCE_FD, c->fd, events, | |
347 (void *) ((uintptr_t) ev | ev->instance)) | |
348 == -1) | |
349 { | |
350 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, | |
351 "port_associate() failed"); | |
352 return NGX_ERROR; | |
353 } | |
354 | |
355 ev->active = 1; | |
356 ev->oneshot = 1; | |
357 | |
358 return NGX_OK; | |
359 } | |
360 | |
361 | |
362 static ngx_int_t | |
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363 ngx_eventport_del_event(ngx_event_t *ev, ngx_int_t event, ngx_uint_t flags) |
719 | 364 { |
365 ngx_event_t *e; | |
366 ngx_connection_t *c; | |
367 | |
368 /* | |
369 * when the file descriptor is closed, the event port automatically | |
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370 * dissociates it from the port, so we do not need to dissociate explicitly |
719 | 371 * the event before the closing the file descriptor |
372 */ | |
373 | |
374 if (flags & NGX_CLOSE_EVENT) { | |
375 ev->active = 0; | |
376 ev->oneshot = 0; | |
377 return NGX_OK; | |
378 } | |
379 | |
380 c = ev->data; | |
381 | |
382 if (event == NGX_READ_EVENT) { | |
383 e = c->write; | |
384 event = POLLOUT; | |
385 | |
386 } else { | |
387 e = c->read; | |
388 event = POLLIN; | |
389 } | |
390 | |
391 if (e->oneshot) { | |
392 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, | |
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393 "eventport change event: fd:%d ev:%04Xi", c->fd, event); |
719 | 394 |
395 if (port_associate(ep, PORT_SOURCE_FD, c->fd, event, | |
396 (void *) ((uintptr_t) ev | ev->instance)) | |
397 == -1) | |
398 { | |
399 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, | |
400 "port_associate() failed"); | |
401 return NGX_ERROR; | |
402 } | |
403 | |
404 } else { | |
405 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0, | |
406 "eventport del event: fd:%d", c->fd); | |
407 | |
408 if (port_dissociate(ep, PORT_SOURCE_FD, c->fd) == -1) { | |
409 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, | |
410 "port_dissociate() failed"); | |
411 return NGX_ERROR; | |
412 } | |
413 } | |
414 | |
415 ev->active = 0; | |
416 ev->oneshot = 0; | |
417 | |
418 return NGX_OK; | |
419 } | |
420 | |
421 | |
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422 static ngx_int_t |
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423 ngx_eventport_notify(ngx_event_handler_pt handler) |
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424 { |
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425 notify_event.handler = handler; |
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426 |
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427 if (port_send(ep, 0, ¬ify_event) != 0) { |
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428 ngx_log_error(NGX_LOG_ALERT, notify_event.log, ngx_errno, |
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429 "port_send() failed"); |
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430 return NGX_ERROR; |
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431 } |
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432 |
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433 return NGX_OK; |
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434 } |
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435 |
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436 |
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437 static ngx_int_t |
719 | 438 ngx_eventport_process_events(ngx_cycle_t *cycle, ngx_msec_t timer, |
439 ngx_uint_t flags) | |
440 { | |
441 int n, revents; | |
442 u_int events; | |
443 ngx_err_t err; | |
444 ngx_int_t instance; | |
445 ngx_uint_t i, level; | |
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446 ngx_event_t *ev, *rev, *wev; |
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447 ngx_queue_t *queue; |
719 | 448 ngx_connection_t *c; |
449 struct timespec ts, *tp; | |
450 | |
451 if (timer == NGX_TIMER_INFINITE) { | |
452 tp = NULL; | |
453 | |
454 } else { | |
455 ts.tv_sec = timer / 1000; | |
456 ts.tv_nsec = (timer % 1000) * 1000000; | |
457 tp = &ts; | |
458 } | |
459 | |
460 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, | |
461 "eventport timer: %M", timer); | |
462 | |
463 events = 1; | |
464 | |
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465 n = port_getn(ep, event_list, (u_int) nevents, &events, tp); |
719 | 466 |
467 err = ngx_errno; | |
468 | |
469 if (flags & NGX_UPDATE_TIME) { | |
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470 ngx_time_update(); |
719 | 471 } |
472 | |
473 if (n == -1) { | |
474 if (err == ETIME) { | |
475 if (timer != NGX_TIMER_INFINITE) { | |
476 return NGX_OK; | |
477 } | |
478 | |
479 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
480 "port_getn() returned no events without timeout"); | |
481 return NGX_ERROR; | |
482 } | |
483 | |
484 level = (err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT; | |
485 ngx_log_error(level, cycle->log, err, "port_getn() failed"); | |
486 return NGX_ERROR; | |
487 } | |
488 | |
489 if (events == 0) { | |
490 if (timer != NGX_TIMER_INFINITE) { | |
491 return NGX_OK; | |
492 } | |
493 | |
494 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
495 "port_getn() returned no events without timeout"); | |
496 return NGX_ERROR; | |
497 } | |
498 | |
499 for (i = 0; i < events; i++) { | |
500 | |
501 if (event_list[i].portev_source == PORT_SOURCE_TIMER) { | |
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502 ngx_time_update(); |
719 | 503 continue; |
504 } | |
505 | |
506 ev = event_list[i].portev_user; | |
507 | |
508 switch (event_list[i].portev_source) { | |
509 | |
510 case PORT_SOURCE_FD: | |
511 | |
512 instance = (uintptr_t) ev & 1; | |
513 ev = (ngx_event_t *) ((uintptr_t) ev & (uintptr_t) ~1); | |
514 | |
515 if (ev->closed || ev->instance != instance) { | |
516 | |
517 /* | |
518 * the stale event from a file descriptor | |
519 * that was just closed in this iteration | |
520 */ | |
521 | |
522 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, | |
523 "eventport: stale event %p", ev); | |
524 continue; | |
525 } | |
526 | |
527 revents = event_list[i].portev_events; | |
528 | |
529 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, | |
530 "eventport: fd:%d, ev:%04Xd", | |
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531 (int) event_list[i].portev_object, revents); |
719 | 532 |
533 if (revents & (POLLERR|POLLHUP|POLLNVAL)) { | |
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534 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
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535 "port_getn() error fd:%d ev:%04Xd", |
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536 (int) event_list[i].portev_object, revents); |
719 | 537 } |
538 | |
539 if (revents & ~(POLLIN|POLLOUT|POLLERR|POLLHUP|POLLNVAL)) { | |
540 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
541 "strange port_getn() events fd:%d ev:%04Xd", | |
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542 (int) event_list[i].portev_object, revents); |
719 | 543 } |
544 | |
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545 if (revents & (POLLERR|POLLHUP|POLLNVAL)) { |
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546 |
719 | 547 /* |
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548 * if the error events were returned, add POLLIN and POLLOUT |
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549 * to handle the events at least in one active handler |
719 | 550 */ |
551 | |
552 revents |= POLLIN|POLLOUT; | |
553 } | |
554 | |
555 c = ev->data; | |
556 rev = c->read; | |
557 wev = c->write; | |
558 | |
559 rev->active = 0; | |
560 wev->active = 0; | |
561 | |
562 if (revents & POLLIN) { | |
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563 rev->ready = 1; |
719 | 564 |
565 if (flags & NGX_POST_EVENTS) { | |
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566 queue = rev->accept ? &ngx_posted_accept_events |
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567 : &ngx_posted_events; |
719 | 568 |
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569 ngx_post_event(rev, queue); |
719 | 570 |
571 } else { | |
572 rev->handler(rev); | |
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573 |
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574 if (ev->closed || ev->instance != instance) { |
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575 continue; |
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576 } |
719 | 577 } |
578 | |
579 if (rev->accept) { | |
580 if (ngx_use_accept_mutex) { | |
581 ngx_accept_events = 1; | |
582 continue; | |
583 } | |
584 | |
585 if (port_associate(ep, PORT_SOURCE_FD, c->fd, POLLIN, | |
586 (void *) ((uintptr_t) ev | ev->instance)) | |
587 == -1) | |
588 { | |
589 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, | |
590 "port_associate() failed"); | |
591 return NGX_ERROR; | |
592 } | |
593 } | |
594 } | |
595 | |
596 if (revents & POLLOUT) { | |
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597 wev->ready = 1; |
719 | 598 |
599 if (flags & NGX_POST_EVENTS) { | |
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600 ngx_post_event(wev, &ngx_posted_events); |
719 | 601 |
602 } else { | |
603 wev->handler(wev); | |
604 } | |
605 } | |
606 | |
607 continue; | |
608 | |
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609 case PORT_SOURCE_USER: |
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610 |
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611 ev->handler(ev); |
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612 |
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613 continue; |
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614 |
719 | 615 default: |
616 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, | |
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617 "unexpected eventport object %d", |
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618 (int) event_list[i].portev_object); |
719 | 619 continue; |
620 } | |
621 } | |
622 | |
623 return NGX_OK; | |
624 } | |
625 | |
626 | |
627 static void * | |
628 ngx_eventport_create_conf(ngx_cycle_t *cycle) | |
629 { | |
630 ngx_eventport_conf_t *epcf; | |
631 | |
632 epcf = ngx_palloc(cycle->pool, sizeof(ngx_eventport_conf_t)); | |
633 if (epcf == NULL) { | |
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634 return NULL; |
719 | 635 } |
636 | |
637 epcf->events = NGX_CONF_UNSET; | |
638 | |
639 return epcf; | |
640 } | |
641 | |
642 | |
643 static char * | |
644 ngx_eventport_init_conf(ngx_cycle_t *cycle, void *conf) | |
645 { | |
646 ngx_eventport_conf_t *epcf = conf; | |
647 | |
648 ngx_conf_init_uint_value(epcf->events, 32); | |
649 | |
650 return NGX_CONF_OK; | |
651 } |