1 /* IOHandler.c - IOMultiplexer
2 * Copyright (C) 2012 Philipp Kreil (pk910)
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 #include "IOHandler.h"
19 #include "IOHandler_SSL.h"
24 #define _WIN32_WINNT 0x501
34 #include <sys/socket.h>
35 #include <netinet/in.h>
36 #include <netinet/tcp.h>
40 #define EWOULDBLOCK EAGAIN
44 iohandler_log_callback *iolog_backend = NULL;
46 struct IODescriptor *first_descriptor = NULL;
47 struct IODescriptor *timer_priority = NULL;
50 static pthread_mutex_t io_thread_sync;
51 static pthread_mutex_t io_poll_sync;
54 void iohandler_log(enum IOLogType type, char *text, ...) {
56 char logBuf[MAXLOG+1];
59 va_start(arg_list, text);
60 pos = vsnprintf(logBuf, MAXLOG - 1, text, arg_list);
62 if (pos < 0 || pos > (MAXLOG - 1)) pos = MAXLOG - 1;
67 iolog_backend(type, logBuf);
71 extern struct IOEngine engine_select; /* select system call (should always be useable) */
72 extern struct IOEngine engine_kevent;
73 extern struct IOEngine engine_epoll;
74 extern struct IOEngine engine_win32;
76 int iohandler_settings = 0;
77 struct IOEngine *engine = NULL;
79 void iohandler_set(int setting, int value) {
81 iohandler_settings |= setting;
83 iohandler_settings &= ~setting;
86 static void iohandler_init_engine() {
88 IOTHREAD_MUTEX_INIT(io_thread_sync);
89 IOTHREAD_MUTEX_INIT(io_poll_sync);
92 if(!(iohandler_settings & IOHANDLER_SETTING_HIGH_PRECISION_TIMER)) {
93 if(!engine && engine_kevent.init && engine_kevent.init())
94 engine = &engine_kevent;
95 if(!engine && engine_epoll.init && engine_epoll.init())
96 engine = &engine_epoll;
97 if(!engine && engine_win32.init && engine_win32.init())
98 engine = &engine_win32;
102 if(engine_select.init())
103 engine = &engine_select;
105 iohandler_log(IOLOG_FATAL, "found no useable IO engine");
109 iohandler_log(IOLOG_DEBUG, "using %s IO engine", engine->name);
110 iohandler_ssl_init();
113 static void iohandler_append(struct IODescriptor *descriptor) {
114 IOSYNCHRONIZE(io_thread_sync);
115 struct timeval *timeout = ((descriptor->timeout.tv_sec || descriptor->timeout.tv_usec) ? &descriptor->timeout : NULL);
117 struct IODescriptor *iofd;
118 int set_priority = 1;
119 descriptor->timeout = *timeout;
121 iofd = timer_priority;
123 iofd = first_descriptor;
125 for(;;iofd = iofd->next) {
126 if(timeval_is_smaler(timeout, (&iofd->timeout))) {
127 descriptor->prev = iofd->prev;
128 descriptor->next = iofd;
130 iofd->prev->next = descriptor;
131 iofd->prev = descriptor;
133 timer_priority = descriptor;
136 if(iofd == timer_priority)
138 if(iofd->next == NULL) {
139 descriptor->next = NULL;
140 descriptor->prev = iofd;
141 iofd->next = descriptor;
143 timer_priority = descriptor;
148 descriptor->prev = NULL;
149 descriptor->next = NULL;
150 first_descriptor = descriptor;
151 timer_priority = descriptor;
155 descriptor->prev = NULL;
156 descriptor->next = first_descriptor;
158 first_descriptor->prev = descriptor;
159 first_descriptor = descriptor;
161 IODESYNCHRONIZE(io_thread_sync);
164 static void iohandler_remove(struct IODescriptor *descriptor, int engine_remove) {
165 //remove IODescriptor from the list
166 IOSYNCHRONIZE(io_thread_sync);
168 descriptor->prev->next = descriptor->next;
170 first_descriptor = descriptor->next;
172 descriptor->next->prev = descriptor->prev;
173 if(descriptor == timer_priority)
174 timer_priority = descriptor->next;
177 engine->remove(descriptor);
178 if(descriptor->readbuf.buffer)
179 free(descriptor->readbuf.buffer);
180 if(descriptor->writebuf.buffer)
181 free(descriptor->writebuf.buffer);
182 iohandler_log(IOLOG_DEBUG, "removed IODescriptor (%d) of type `%s`", descriptor->fd, iohandler_iotype_name(descriptor->type));
184 IODESYNCHRONIZE(io_thread_sync);
187 struct IODescriptor *iohandler_add(int sockfd, enum IOType type, struct timeval *timeout, iohandler_callback *callback) {
188 //just add a new IODescriptor
189 struct IODescriptor *descriptor = calloc(1, sizeof(*descriptor));
191 iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
194 descriptor->fd = (type == IOTYPE_STDIN ? fileno(stdin) : sockfd);
195 descriptor->type = type;
196 descriptor->state = (type == IOTYPE_STDIN ? IO_CONNECTED : IO_CLOSED);
197 descriptor->callback = callback;
199 descriptor->timeout = *timeout;
200 if(descriptor->timeout.tv_usec > 1000000) {
201 descriptor->timeout.tv_usec -= 1000000;
202 descriptor->timeout.tv_sec++;
205 if(type != IOTYPE_TIMER) {
206 descriptor->readbuf.buffer = malloc(IO_READ_BUFLEN + 2);
207 descriptor->readbuf.bufpos = 0;
208 descriptor->readbuf.buflen = IO_READ_BUFLEN;
209 descriptor->writebuf.buffer = malloc(IO_READ_BUFLEN + 2);
210 descriptor->writebuf.bufpos = 0;
211 descriptor->writebuf.buflen = IO_READ_BUFLEN;
215 iohandler_init_engine();
220 engine->add(descriptor);
222 //add IODescriptor to the list
223 iohandler_append(descriptor);
225 iohandler_log(IOLOG_DEBUG, "added custom socket descriptor (%d) as type `%s`", sockfd, iohandler_iotype_name(type));
229 void iohandler_set_timeout(struct IODescriptor *descriptor, struct timeval *timeout) {
231 descriptor->prev->next = descriptor->next;
233 first_descriptor = descriptor->next;
235 descriptor->next->prev = descriptor->prev;
236 if(descriptor == timer_priority)
237 timer_priority = descriptor->next;
238 if(timeout && timeout->tv_sec == 0 && descriptor->constant_timeout) {
239 descriptor->timeout.tv_usec += (descriptor->constant_timeout % 1000) * 1000;
240 descriptor->timeout.tv_sec += (descriptor->constant_timeout / 1000);
241 if(descriptor->timeout.tv_usec > 1000000) {
242 descriptor->timeout.tv_sec += (descriptor->timeout.tv_usec / 1000000);
243 descriptor->timeout.tv_usec %= 1000000;
246 descriptor->timeout = *timeout;
247 if(descriptor->timeout.tv_usec > 1000000) {
248 descriptor->timeout.tv_usec -= 1000000;
249 descriptor->timeout.tv_sec++;
252 descriptor->timeout.tv_sec = 0;
253 descriptor->timeout.tv_usec = 0;
255 iohandler_append(descriptor);
258 static void iohandler_increase_iobuf(struct IOBuffer *iobuf, size_t required) {
259 if(iobuf->buflen >= required) return;
260 char *new_buf = realloc(iobuf->buffer, required + 2);
262 iobuf->buffer = new_buf;
263 iobuf->buflen = required;
267 struct IODescriptor *iohandler_timer(struct timeval timeout, iohandler_callback *callback) {
268 struct IODescriptor *descriptor;
269 descriptor = iohandler_add(-1, IOTYPE_TIMER, &timeout, callback);
271 iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
274 iohandler_log(IOLOG_DEBUG, "added timer descriptor (sec: %d; usec: %d)", timeout.tv_sec, timeout.tv_usec);
278 struct IODescriptor *iohandler_constant_timer(int msec, iohandler_callback *callback) {
279 struct IODescriptor *descriptor;
280 struct timeval timeout;
281 gettimeofday(&timeout, NULL);
282 timeout.tv_usec += (msec % 1000) * 1000;
283 timeout.tv_sec += (msec / 1000);
284 if(timeout.tv_usec > 1000000) {
285 timeout.tv_sec += (timeout.tv_usec / 1000000);
286 timeout.tv_usec %= 1000000;
288 descriptor = iohandler_add(-1, IOTYPE_TIMER, &timeout, callback);
290 iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
293 descriptor->constant_timeout = msec;
294 iohandler_log(IOLOG_DEBUG, "added timer descriptor (sec: %d; usec: %d)", timeout.tv_sec, timeout.tv_usec);
298 struct IODescriptor *iohandler_connect(const char *hostname, unsigned int port, int ssl, const char *bindhost, iohandler_callback *callback) {
299 return iohandler_connect_flags(hostname, port, ssl, bindhost, callback, IOHANDLER_CONNECT_IPV4 | IOHANDLER_CONNECT_IPV6);
302 struct IODescriptor *iohandler_connect_flags(const char *hostname, unsigned int port, int ssl, const char *bindhost, iohandler_callback *callback, int flags) {
303 //non-blocking connect
305 struct addrinfo hints, *res;
306 struct sockaddr_in *ip4 = NULL;
307 struct sockaddr_in6 *ip6 = NULL;
309 struct sockaddr *dstaddr = NULL;
310 struct IODescriptor *descriptor;
313 iohandler_init_engine();
314 if(!engine) return NULL;
316 memset (&hints, 0, sizeof (hints));
317 hints.ai_family = PF_UNSPEC;
318 hints.ai_socktype = SOCK_STREAM;
319 hints.ai_flags |= AI_CANONNAME;
320 if ((result = getaddrinfo (hostname, NULL, &hints, &res))) {
321 iohandler_log(IOLOG_ERROR, "could not resolve %s to an IP address (%d)", hostname, result);
325 switch (res->ai_family) {
327 ip4 = (struct sockaddr_in *) res->ai_addr;
330 ip6 = (struct sockaddr_in6 *) res->ai_addr;
337 if(ip6 && (flags & IOHANDLER_CONNECT_IPV6)) {
338 sockfd = socket(AF_INET6, SOCK_STREAM, 0);
340 iohandler_log(IOLOG_ERROR, "could not create socket in %s:%d", __FILE__, __LINE__);
344 ip6->sin6_family = AF_INET6;
345 ip6->sin6_port = htons(port);
347 struct sockaddr_in6 *ip6vhost = NULL;
348 if (bindhost && !getaddrinfo(bindhost, NULL, &hints, &res)) {
350 switch (res->ai_family) {
352 ip6vhost = (struct sockaddr_in6 *) res->ai_addr;
360 ip6vhost->sin6_family = AF_INET6;
361 ip6vhost->sin6_port = htons(0);
362 bind(sockfd, (struct sockaddr*)ip6vhost, sizeof(*ip6vhost));
364 dstaddr = (struct sockaddr*)ip6;
365 dstaddrlen = sizeof(*ip6);
366 } else if(ip4 && (flags & IOHANDLER_CONNECT_IPV4)) {
367 sockfd = socket(AF_INET, SOCK_STREAM, 0);
369 iohandler_log(IOLOG_ERROR, "could not create socket in %s:%d", __FILE__, __LINE__);
373 ip4->sin_family = AF_INET;
374 ip4->sin_port = htons(port);
376 struct sockaddr_in *ip4vhost = NULL;
377 if (bindhost && !getaddrinfo(bindhost, NULL, &hints, &res)) {
379 switch (res->ai_family) {
381 ip4vhost = (struct sockaddr_in *) res->ai_addr;
389 ip4vhost->sin_family = AF_INET;
390 ip4vhost->sin_port = htons(0);
391 bind(sockfd, (struct sockaddr*)ip4vhost, sizeof(*ip4vhost));
393 dstaddr = (struct sockaddr*)ip4;
394 dstaddrlen = sizeof(*ip4);
399 #if defined(SO_NOSIGPIPE)
402 setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
405 signal(SIGPIPE, SIG_IGN);
408 //make sockfd unblocking
412 flags = fcntl(sockfd, F_GETFL);
413 fcntl(sockfd, F_SETFL, flags|O_NONBLOCK);
414 flags = fcntl(sockfd, F_GETFD);
415 fcntl(sockfd, F_SETFD, flags|FD_CLOEXEC);
418 /* I hope you're using the Win32 backend or something else that
419 * automatically marks the file descriptor non-blocking...
422 descriptor = iohandler_add(sockfd, IOTYPE_CLIENT, NULL, callback);
427 connect(sockfd, dstaddr, dstaddrlen); //returns EINPROGRESS here (nonblocking)
428 descriptor->state = IO_CONNECTING;
429 descriptor->ssl = (ssl ? 1 : 0);
430 descriptor->read_lines = 1;
431 engine->update(descriptor);
432 iohandler_log(IOLOG_DEBUG, "added client socket (%d) connecting to %s:%d", sockfd, hostname, port);
436 struct IODescriptor *iohandler_listen(const char *hostname, unsigned int port, iohandler_callback *callback) {
437 return iohandler_listen_flags(hostname, port, callback, IOHANDLER_LISTEN_IPV4 | IOHANDLER_LISTEN_IPV6);
440 struct IODescriptor *iohandler_listen_flags(const char *hostname, unsigned int port, iohandler_callback *callback, int flags) {
442 struct addrinfo hints, *res;
443 struct sockaddr_in *ip4 = NULL;
444 struct sockaddr_in6 *ip6 = NULL;
445 struct IODescriptor *descriptor;
449 iohandler_init_engine();
450 if(!engine) return NULL;
452 memset (&hints, 0, sizeof (hints));
453 hints.ai_family = PF_UNSPEC;
454 hints.ai_socktype = SOCK_STREAM;
455 hints.ai_flags |= AI_CANONNAME;
456 if (getaddrinfo (hostname, NULL, &hints, &res)) {
460 switch (res->ai_family) {
462 ip4 = (struct sockaddr_in *) res->ai_addr;
465 ip6 = (struct sockaddr_in6 *) res->ai_addr;
472 if(ip6 && (flags & IOHANDLER_LISTEN_IPV6)) {
473 sockfd = socket(AF_INET6, SOCK_STREAM, 0);
474 if(sockfd == -1) return NULL;
477 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
479 ip6->sin6_family = AF_INET6;
480 ip6->sin6_port = htons(port);
482 bind(sockfd, (struct sockaddr*)ip6, sizeof(*ip6));
483 } else if(ip4 && (flags && IOHANDLER_LISTEN_IPV4)) {
484 sockfd = socket(AF_INET, SOCK_STREAM, 0);
485 if(sockfd == -1) return NULL;
488 setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
490 ip4->sin_family = AF_INET;
491 ip4->sin_port = htons(port);
493 bind(sockfd, (struct sockaddr*)ip4, sizeof(*ip4));
498 #if defined(SO_NOSIGPIPE)
501 setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
504 signal(SIGPIPE, SIG_IGN);
507 //make sockfd unblocking
511 flag = fcntl(sockfd, F_GETFL);
512 fcntl(sockfd, F_SETFL, flag|O_NONBLOCK);
513 flag = fcntl(sockfd, F_GETFD);
514 fcntl(sockfd, F_SETFD, flag|FD_CLOEXEC);
517 /* I hope you're using the Win32 backend or something else that
518 * automatically marks the file descriptor non-blocking...
521 descriptor = iohandler_add(sockfd, IOTYPE_SERVER, NULL, callback);
527 descriptor->state = IO_LISTENING;
528 engine->update(descriptor);
529 iohandler_log(IOLOG_DEBUG, "added server socket (%d) listening on %s:%d", sockfd, hostname, port);
533 struct IODescriptor *iohandler_listen_ssl(const char *hostname, unsigned int port, const char *certfile, const char *keyfile, iohandler_callback *callback) {
534 return iohandler_listen_ssl_flags(hostname, port, certfile, keyfile, callback, IOHANDLER_LISTEN_IPV4 | IOHANDLER_LISTEN_IPV6);
537 struct IODescriptor *iohandler_listen_ssl_flags(const char *hostname, unsigned int port, const char *certfile, const char *keyfile, iohandler_callback *callback, int flags) {
538 struct IODescriptor *descriptor = iohandler_listen_flags(hostname, port, callback, flags);
542 iohandler_ssl_listen(descriptor, certfile, keyfile);
543 if(descriptor->sslnode)
548 void iohandler_write(struct IODescriptor *iofd, const char *line) {
549 size_t linelen = strlen(line);
550 iohandler_send(iofd, line, linelen);
553 void iohandler_send(struct IODescriptor *iofd, const char *data, size_t datalen) {
554 if(iofd->type == IOTYPE_TIMER || iofd->state == IO_CLOSED) {
555 iohandler_log(IOLOG_ERROR, "could not write to socket (%s)", (iofd->type == IOTYPE_TIMER ? "IOTYPE_TIMER" : "IO_CLOSED"));
558 iohandler_log(IOLOG_DEBUG, "add %d to writebuf (fd: %d): %s", datalen, iofd->fd, data);
559 if(iofd->writebuf.buflen < iofd->writebuf.bufpos + datalen) {
560 iohandler_log(IOLOG_DEBUG, "increase writebuf (curr: %d) to %d (+%d bytes)", iofd->writebuf.buflen, iofd->writebuf.bufpos + datalen, (iofd->writebuf.bufpos + datalen - iofd->writebuf.buflen));
561 iohandler_increase_iobuf(&iofd->writebuf, iofd->writebuf.bufpos + datalen);
562 if(iofd->writebuf.buflen < iofd->writebuf.bufpos + datalen) {
563 iohandler_log(IOLOG_ERROR, "increase writebuf (curr: %d) to %d (+%d bytes) FAILED", iofd->writebuf.buflen, iofd->writebuf.bufpos + datalen, (iofd->writebuf.bufpos + datalen - iofd->writebuf.buflen));
567 memcpy(iofd->writebuf.buffer + iofd->writebuf.bufpos, data, datalen);
568 iofd->writebuf.bufpos += datalen;
569 engine->update(iofd);
572 void iohandler_printf(struct IODescriptor *iofd, const char *text, ...) {
574 char sendBuf[IO_LINE_LEN];
577 va_start(arg_list, text);
578 pos = vsnprintf(sendBuf, IO_LINE_LEN - 2, text, arg_list);
580 if (pos < 0 || pos > (IO_LINE_LEN - 2)) pos = IO_LINE_LEN - 2;
582 sendBuf[pos+1] = '\0';
583 iohandler_send(iofd, sendBuf, pos+1);
586 static int iohandler_try_write(struct IODescriptor *iofd) {
587 if(!iofd->writebuf.bufpos) return 0;
588 iohandler_log(IOLOG_DEBUG, "write writebuf (%d bytes) to socket (fd: %d)", iofd->writebuf.bufpos, iofd->fd);
591 res = iohandler_ssl_write(iofd, iofd->writebuf.buffer, iofd->writebuf.bufpos);
593 res = send(iofd->fd, iofd->writebuf.buffer, iofd->writebuf.bufpos, 0);
595 if (errno != EAGAIN && errno != EWOULDBLOCK)
596 iohandler_log(IOLOG_ERROR, "could not write to socket (fd: %d): %d - %s", iofd->fd, errno, strerror(errno));
600 iofd->writebuf.bufpos -= res;
601 if(iofd->state != IO_CLOSED)
602 engine->update(iofd);
607 void iohandler_close(struct IODescriptor *iofd) {
608 int engine_remove = 1;
609 iofd->state = IO_CLOSED;
610 if(iofd->writebuf.bufpos) {
611 //try to send everything before closing
615 flags = fcntl(iofd->fd, F_GETFL);
616 fcntl(iofd->fd, F_SETFL, flags & ~O_NONBLOCK);
617 flags = fcntl(iofd->fd, F_GETFD);
618 fcntl(iofd->fd, F_SETFD, flags|FD_CLOEXEC);
622 engine->remove(iofd);
624 iohandler_try_write(iofd);
628 iohandler_ssl_disconnect(iofd);
629 if(iofd->type == IOTYPE_SERVER || iofd->type == IOTYPE_CLIENT || iofd->type == IOTYPE_STDIN)
631 iohandler_remove(iofd, engine_remove);
634 void iohandler_update(struct IODescriptor *iofd) {
635 iohandler_log(IOLOG_DEBUG, "external call to iohandler_update (fd: %d)", iofd->fd);
636 engine->update(iofd);
639 static void iohandler_trigger_event(struct IOEvent *event) {
640 if(!event->iofd->callback) return;
641 iohandler_log(IOLOG_DEBUG, "triggering event (%s) for %s (fd: %d)", iohandler_ioeventtype_name(event->type), iohandler_iotype_name(event->iofd->type), event->iofd->fd);
642 event->iofd->callback(event);
645 void iohandler_events(struct IODescriptor *iofd, int readable, int writeable) {
646 struct IOEvent callback_event;
647 callback_event.type = IOEVENT_IGNORE;
648 callback_event.iofd = iofd;
649 switch(iofd->state) {
651 if(!readable && !writeable) {
652 if(!iofd->ssl_server_hs) {
653 callback_event.type = IOEVENT_SSLFAILED;
654 iofd->state = IO_CLOSED;
655 engine->update(iofd);
657 iohandler_close(iofd);
658 } else if(iofd->ssl_server_hs) {
659 iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_server_handshake for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
660 iohandler_ssl_server_handshake(iofd);
662 iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_client_handshake for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
663 iohandler_ssl_client_handshake(iofd);
667 if(iofd->type == IOTYPE_TIMER)
668 callback_event.type = IOEVENT_TIMEOUT;
672 callback_event.data.accept_fd = accept(iofd->fd, NULL, 0);
673 if(callback_event.data.accept_fd < 0) {
674 iohandler_log(IOLOG_ERROR, "could not accept client (server fd: %d): %d - %s", iofd->fd, errno, strerror(errno));
675 } else if(iofd->ssl) {
676 struct IODescriptor *client_iofd = iohandler_add(callback_event.data.accept_fd, IOTYPE_CLIENT, NULL, NULL);
677 iohandler_ssl_client_accepted(iofd, client_iofd);
679 callback_event.type = IOEVENT_ACCEPT;
683 if(readable) { //could not connect
684 callback_event.type = IOEVENT_NOTCONNECTED;
686 //arglen = sizeof(callback_event.data.errid);
687 //if (getsockopt(iofd->fd, SOL_SOCKET, SO_ERROR, &callback_event.data.errid, &arglen) < 0)
688 // callback_event.data.errid = errno;
689 iofd->state = IO_CLOSED;
690 engine->update(iofd);
691 } else if(writeable) {
692 if(iofd->ssl && !iofd->ssl_active) {
693 iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_connect for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
694 iohandler_ssl_connect(iofd);
697 if(iofd->ssl && iofd->ssl_server_hs) {
698 callback_event.type = IOEVENT_SSLACCEPT;
699 callback_event.iofd = iofd->data;
700 callback_event.data.accept_iofd = iofd;
704 callback_event.type = IOEVENT_CONNECTED;
705 iofd->state = IO_CONNECTED;
706 engine->update(iofd);
711 if(iofd->read_lines) {
715 bytes = iohandler_ssl_read(iofd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos);
717 if(iofd->type == IOTYPE_STDIN)
721 bytes = read(iofd->fd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos);
724 bytes = recv(iofd->fd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos, 0);
727 if (errno != EAGAIN || errno != EWOULDBLOCK) {
728 iofd->state = IO_CLOSED;
729 engine->update(iofd);
730 callback_event.type = IOEVENT_CLOSED;
731 callback_event.data.errid = errno;
734 int i, used_bytes = 0;
735 iohandler_log(IOLOG_DEBUG, "received %d bytes (fd: %d). readbuf position: %d", bytes, iofd->fd, iofd->readbuf.bufpos);
736 iofd->readbuf.bufpos += bytes;
737 callback_event.type = IOEVENT_RECV;
738 for(i = 0; i < iofd->readbuf.bufpos; i++) {
739 if(iofd->readbuf.buffer[i] == '\r' && iofd->readbuf.buffer[i+1] == '\n')
740 iofd->readbuf.buffer[i] = 0;
741 else if(iofd->readbuf.buffer[i] == '\n' || iofd->readbuf.buffer[i] == '\r') {
742 iofd->readbuf.buffer[i] = 0;
743 callback_event.data.recv_str = iofd->readbuf.buffer + used_bytes;
744 iohandler_log(IOLOG_DEBUG, "parsed line (%d bytes): %s", i - used_bytes, iofd->readbuf.buffer + used_bytes);
746 iohandler_trigger_event(&callback_event);
747 } else if(i + 1 - used_bytes >= IO_LINE_LEN) { //512 max
748 iofd->readbuf.buffer[i] = 0;
749 callback_event.data.recv_str = iofd->readbuf.buffer + used_bytes;
750 iohandler_log(IOLOG_DEBUG, "parsed and stripped line (%d bytes): %s", i - used_bytes, iofd->readbuf.buffer + used_bytes);
751 for(; i < iofd->readbuf.bufpos; i++) { //skip the rest of the line
752 if(iofd->readbuf.buffer[i] == '\n' || (iofd->readbuf.buffer[i] == '\r' && iofd->readbuf.buffer[i+1] != '\n')) {
757 iohandler_trigger_event(&callback_event);
761 if(used_bytes == iofd->readbuf.bufpos) {
762 iofd->readbuf.bufpos = 0;
763 iohandler_log(IOLOG_DEBUG, "readbuf fully processed (set buffer position to 0)");
765 iohandler_log(IOLOG_DEBUG, "readbuf rest: %d bytes (used %d bytes)", iofd->readbuf.bufpos - used_bytes, used_bytes);
766 memmove(iofd->readbuf.buffer, iofd->readbuf.buffer + used_bytes, iofd->readbuf.bufpos - used_bytes);
767 iofd->readbuf.bufpos -= used_bytes;
770 callback_event.type = IOEVENT_IGNORE;
773 callback_event.type = IOEVENT_READABLE;
777 bytes = iohandler_try_write(iofd);
779 iofd->state = IO_CLOSED;
780 engine->update(iofd);
781 callback_event.type = IOEVENT_CLOSED;
782 callback_event.data.errid = errno;
787 if(callback_event.type == IOEVENT_IGNORE && !readable && !writeable)
788 callback_event.type = IOEVENT_TIMEOUT;
789 if(callback_event.type != IOEVENT_IGNORE)
790 iohandler_trigger_event(&callback_event);
793 void iohandler_poll() {
794 struct timeval timeout;
795 timeout.tv_sec = IO_MAX_TIMEOUT;
797 iohandler_poll_timeout(timeout);
800 void iohandler_poll_timeout(struct timeval timeout) {
802 IOSYNCHRONIZE(io_poll_sync); //quite senceless multithread support... better support will follow
803 engine->loop(&timeout);
804 IODESYNCHRONIZE(io_poll_sync);
808 //debugging functions
809 char *iohandler_iotype_name(enum IOType type) {
812 return "IOTYPE_UNKNOWN";
814 return "IOTYPE_SERVER";
816 return "IOTYPE_CLIENT";
818 return "IOTYPE_STDIN";
820 return "IOTYPE_TIMER";
822 return "(UNDEFINED)";
826 char *iohandler_iostatus_name(enum IOStatus status) {
831 return "IO_LISTENING";
833 return "IO_CONNECTING";
835 return "IO_CONNECTED";
839 return "(UNDEFINED)";
843 char *iohandler_ioeventtype_name(enum IOEventType type) {
846 return "IOEVENT_IGNORE";
847 case IOEVENT_READABLE:
848 return "IOEVENT_READABLE";
850 return "IOEVENT_RECV";
851 case IOEVENT_CONNECTED:
852 return "IOEVENT_CONNECTED";
853 case IOEVENT_NOTCONNECTED:
854 return "IOEVENT_NOTCONNECTED";
856 return "IOEVENT_CLOSED";
858 return "IOEVENT_ACCEPT";
859 case IOEVENT_SSLACCEPT:
860 return "IOEVENT_SSLACCEPT";
861 case IOEVENT_TIMEOUT:
862 return "IOEVENT_TIMEOUT";
864 return "(UNDEFINED)";