+++ /dev/null
-/* IOHandler.c - IOMultiplexer
- * Copyright (C) 2012 Philipp Kreil (pk910)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-#include "IOHandler.h"
-#include "IOEngine.h"
-#include "IOHandler_SSL.h"
-#include <errno.h>
-#include <stdio.h>
-#include <unistd.h>
-#ifdef WIN32
-#define _WIN32_WINNT 0x501
-#include <windows.h>
-#include <winsock2.h>
-#include <ws2tcpip.h>
-#else
-#include <signal.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include <string.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <fcntl.h>
-#endif
-
-#ifndef EWOULDBLOCK
-#define EWOULDBLOCK EAGAIN
-#endif
-
-#define MAXLOG 1024
-iohandler_log_callback *iolog_backend = NULL;
-
-struct IODescriptor *first_descriptor = NULL;
-struct IODescriptor *timer_priority = NULL;
-
-#ifdef HAVE_PTHREAD_H
-static pthread_mutex_t io_thread_sync;
-static pthread_mutex_t io_poll_sync;
-#endif
-
-void iohandler_log(enum IOLogType type, char *text, ...) {
- va_list arg_list;
- char logBuf[MAXLOG+1];
- int pos;
- logBuf[0] = '\0';
- va_start(arg_list, text);
- pos = vsnprintf(logBuf, MAXLOG - 1, text, arg_list);
- va_end(arg_list);
- if (pos < 0 || pos > (MAXLOG - 1)) pos = MAXLOG - 1;
- logBuf[pos] = '\n';
- logBuf[pos+1] = '\0';
-
- if(iolog_backend)
- iolog_backend(type, logBuf);
-}
-
-/* IO Engines */
-extern struct IOEngine engine_select; /* select system call (should always be useable) */
-extern struct IOEngine engine_kevent;
-extern struct IOEngine engine_epoll;
-extern struct IOEngine engine_win32;
-
-int iohandler_settings = 0;
-struct IOEngine *engine = NULL;
-
-void iohandler_set(int setting, int value) {
- if(value)
- iohandler_settings |= setting;
- else
- iohandler_settings &= ~setting;
-}
-
-static void iohandler_init_engine() {
- if(engine) return;
- IOTHREAD_MUTEX_INIT(io_thread_sync);
- IOTHREAD_MUTEX_INIT(io_poll_sync);
-
- //try other engines
- if(!(iohandler_settings & IOHANDLER_SETTING_HIGH_PRECISION_TIMER)) {
- if(!engine && engine_kevent.init && engine_kevent.init())
- engine = &engine_kevent;
- if(!engine && engine_epoll.init && engine_epoll.init())
- engine = &engine_epoll;
- if(!engine && engine_win32.init && engine_win32.init())
- engine = &engine_win32;
- }
-
- if (!engine) {
- if(engine_select.init())
- engine = &engine_select;
- else {
- iohandler_log(IOLOG_FATAL, "found no useable IO engine");
- return;
- }
- }
- iohandler_log(IOLOG_DEBUG, "using %s IO engine", engine->name);
- iohandler_ssl_init();
-}
-
-static void iohandler_append(struct IODescriptor *descriptor) {
- IOSYNCHRONIZE(io_thread_sync);
- struct timeval *timeout = ((descriptor->timeout.tv_sec || descriptor->timeout.tv_usec) ? &descriptor->timeout : NULL);
- if(timeout) {
- struct IODescriptor *iofd;
- int set_priority = 1;
- descriptor->timeout = *timeout;
- if(timer_priority)
- iofd = timer_priority;
- else
- iofd = first_descriptor;
- if(iofd) {
- for(;;iofd = iofd->next) {
- if(timeval_is_smaler(timeout, (&iofd->timeout))) {
- descriptor->prev = iofd->prev;
- descriptor->next = iofd;
- if(iofd->prev)
- iofd->prev->next = descriptor;
- iofd->prev = descriptor;
- if(set_priority)
- timer_priority = descriptor;
- break;
- }
- if(iofd == timer_priority)
- set_priority = 0;
- if(iofd->next == NULL) {
- descriptor->next = NULL;
- descriptor->prev = iofd;
- iofd->next = descriptor;
- if(set_priority)
- timer_priority = descriptor;
- break;
- }
- }
- } else {
- descriptor->prev = NULL;
- descriptor->next = NULL;
- first_descriptor = descriptor;
- timer_priority = descriptor;
- }
-
- } else {
- descriptor->prev = NULL;
- descriptor->next = first_descriptor;
- if(first_descriptor)
- first_descriptor->prev = descriptor;
- first_descriptor = descriptor;
- }
- IODESYNCHRONIZE(io_thread_sync);
-}
-
-static void iohandler_remove(struct IODescriptor *descriptor, int engine_remove) {
- //remove IODescriptor from the list
- IOSYNCHRONIZE(io_thread_sync);
- if(descriptor->prev)
- descriptor->prev->next = descriptor->next;
- else
- first_descriptor = descriptor->next;
- if(descriptor->next)
- descriptor->next->prev = descriptor->prev;
- if(descriptor == timer_priority)
- timer_priority = descriptor->next;
-
- if(engine_remove)
- engine->remove(descriptor);
- if(descriptor->readbuf.buffer)
- free(descriptor->readbuf.buffer);
- if(descriptor->writebuf.buffer)
- free(descriptor->writebuf.buffer);
- iohandler_log(IOLOG_DEBUG, "removed IODescriptor (%d) of type `%s`", descriptor->fd, iohandler_iotype_name(descriptor->type));
- free(descriptor);
- IODESYNCHRONIZE(io_thread_sync);
-}
-
-struct IODescriptor *iohandler_add(int sockfd, enum IOType type, struct timeval *timeout, iohandler_callback *callback) {
- //just add a new IODescriptor
- struct IODescriptor *descriptor = calloc(1, sizeof(*descriptor));
- if(!descriptor) {
- iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
- return NULL;
- }
- descriptor->fd = (type == IOTYPE_STDIN ? fileno(stdin) : sockfd);
- descriptor->type = type;
- descriptor->state = (type == IOTYPE_STDIN ? IO_CONNECTED : IO_CLOSED);
- descriptor->callback = callback;
- if(timeout) {
- descriptor->timeout = *timeout;
- if(descriptor->timeout.tv_usec > 1000000) {
- descriptor->timeout.tv_usec -= 1000000;
- descriptor->timeout.tv_sec++;
- }
- }
- if(type != IOTYPE_TIMER) {
- descriptor->readbuf.buffer = malloc(IO_READ_BUFLEN + 2);
- descriptor->readbuf.bufpos = 0;
- descriptor->readbuf.buflen = IO_READ_BUFLEN;
- descriptor->writebuf.buffer = malloc(IO_READ_BUFLEN + 2);
- descriptor->writebuf.bufpos = 0;
- descriptor->writebuf.buflen = IO_READ_BUFLEN;
- }
-
- if(!engine) {
- iohandler_init_engine();
- if(!engine) {
- return NULL;
- }
- }
- engine->add(descriptor);
-
- //add IODescriptor to the list
- iohandler_append(descriptor);
-
- iohandler_log(IOLOG_DEBUG, "added custom socket descriptor (%d) as type `%s`", sockfd, iohandler_iotype_name(type));
- return descriptor;
-}
-
-void iohandler_set_timeout(struct IODescriptor *descriptor, struct timeval *timeout) {
- if(descriptor->prev)
- descriptor->prev->next = descriptor->next;
- else
- first_descriptor = descriptor->next;
- if(descriptor->next)
- descriptor->next->prev = descriptor->prev;
- if(descriptor == timer_priority)
- timer_priority = descriptor->next;
- if(timeout && timeout->tv_sec == 0 && descriptor->constant_timeout) {
- descriptor->timeout.tv_usec += (descriptor->constant_timeout % 1000) * 1000;
- descriptor->timeout.tv_sec += (descriptor->constant_timeout / 1000);
- if(descriptor->timeout.tv_usec > 1000000) {
- descriptor->timeout.tv_sec += (descriptor->timeout.tv_usec / 1000000);
- descriptor->timeout.tv_usec %= 1000000;
- }
- } else if(timeout) {
- descriptor->timeout = *timeout;
- if(descriptor->timeout.tv_usec > 1000000) {
- descriptor->timeout.tv_usec -= 1000000;
- descriptor->timeout.tv_sec++;
- }
- } else {
- descriptor->timeout.tv_sec = 0;
- descriptor->timeout.tv_usec = 0;
- }
- iohandler_append(descriptor);
-}
-
-static void iohandler_increase_iobuf(struct IOBuffer *iobuf, size_t required) {
- if(iobuf->buflen >= required) return;
- char *new_buf = realloc(iobuf->buffer, required + 2);
- if(new_buf) {
- iobuf->buffer = new_buf;
- iobuf->buflen = required;
- }
-}
-
-struct IODescriptor *iohandler_timer(struct timeval timeout, iohandler_callback *callback) {
- struct IODescriptor *descriptor;
- descriptor = iohandler_add(-1, IOTYPE_TIMER, &timeout, callback);
- if(!descriptor) {
- iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
- return NULL;
- }
- iohandler_log(IOLOG_DEBUG, "added timer descriptor (sec: %d; usec: %d)", timeout.tv_sec, timeout.tv_usec);
- return descriptor;
-}
-
-struct IODescriptor *iohandler_constant_timer(int msec, iohandler_callback *callback) {
- struct IODescriptor *descriptor;
- struct timeval timeout;
- gettimeofday(&timeout, NULL);
- timeout.tv_usec += (msec % 1000) * 1000;
- timeout.tv_sec += (msec / 1000);
- if(timeout.tv_usec > 1000000) {
- timeout.tv_sec += (timeout.tv_usec / 1000000);
- timeout.tv_usec %= 1000000;
- }
- descriptor = iohandler_add(-1, IOTYPE_TIMER, &timeout, callback);
- if(!descriptor) {
- iohandler_log(IOLOG_ERROR, "could not allocate memory for IODescriptor in %s:%d", __FILE__, __LINE__);
- return NULL;
- }
- descriptor->constant_timeout = msec;
- iohandler_log(IOLOG_DEBUG, "added timer descriptor (sec: %d; usec: %d)", timeout.tv_sec, timeout.tv_usec);
- return descriptor;
-}
-
-struct IODescriptor *iohandler_connect(const char *hostname, unsigned int port, int ssl, const char *bindhost, iohandler_callback *callback) {
- return iohandler_connect_flags(hostname, port, ssl, bindhost, callback, IOHANDLER_CONNECT_IPV4 | IOHANDLER_CONNECT_IPV6);
-}
-
-struct IODescriptor *iohandler_connect_flags(const char *hostname, unsigned int port, int ssl, const char *bindhost, iohandler_callback *callback, int flags) {
- //non-blocking connect
- int sockfd, result;
- struct addrinfo hints, *res;
- struct sockaddr_in *ip4 = NULL;
- struct sockaddr_in6 *ip6 = NULL;
- size_t dstaddrlen;
- struct sockaddr *dstaddr = NULL;
- struct IODescriptor *descriptor;
-
- if(!engine) {
- iohandler_init_engine();
- if(!engine) return NULL;
- }
- memset (&hints, 0, sizeof (hints));
- hints.ai_family = PF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_flags |= AI_CANONNAME;
- if ((result = getaddrinfo (hostname, NULL, &hints, &res))) {
- iohandler_log(IOLOG_ERROR, "could not resolve %s to an IP address (%d)", hostname, result);
- return NULL;
- }
- while (res) {
- switch (res->ai_family) {
- case AF_INET:
- ip4 = (struct sockaddr_in *) res->ai_addr;
- break;
- case AF_INET6:
- ip6 = (struct sockaddr_in6 *) res->ai_addr;
- break;
- }
- res = res->ai_next;
- freeaddrinfo(res);
- }
-
- if(ip6 && (flags & IOHANDLER_CONNECT_IPV6)) {
- sockfd = socket(AF_INET6, SOCK_STREAM, 0);
- if(sockfd == -1) {
- iohandler_log(IOLOG_ERROR, "could not create socket in %s:%d", __FILE__, __LINE__);
- return NULL;
- }
-
- ip6->sin6_family = AF_INET6;
- ip6->sin6_port = htons(port);
-
- struct sockaddr_in6 *ip6vhost = NULL;
- if (bindhost && !getaddrinfo(bindhost, NULL, &hints, &res)) {
- while (res) {
- switch (res->ai_family) {
- case AF_INET6:
- ip6vhost = (struct sockaddr_in6 *) res->ai_addr;
- break;
- }
- res = res->ai_next;
- freeaddrinfo(res);
- }
- }
- if(ip6vhost) {
- ip6vhost->sin6_family = AF_INET6;
- ip6vhost->sin6_port = htons(0);
- bind(sockfd, (struct sockaddr*)ip6vhost, sizeof(*ip6vhost));
- }
- dstaddr = (struct sockaddr*)ip6;
- dstaddrlen = sizeof(*ip6);
- } else if(ip4 && (flags & IOHANDLER_CONNECT_IPV4)) {
- sockfd = socket(AF_INET, SOCK_STREAM, 0);
- if(sockfd == -1) {
- iohandler_log(IOLOG_ERROR, "could not create socket in %s:%d", __FILE__, __LINE__);
- return NULL;
- }
-
- ip4->sin_family = AF_INET;
- ip4->sin_port = htons(port);
-
- struct sockaddr_in *ip4vhost = NULL;
- if (bindhost && !getaddrinfo(bindhost, NULL, &hints, &res)) {
- while (res) {
- switch (res->ai_family) {
- case AF_INET:
- ip4vhost = (struct sockaddr_in *) res->ai_addr;
- break;
- }
- res = res->ai_next;
- freeaddrinfo(res);
- }
- }
- if(ip4vhost) {
- ip4vhost->sin_family = AF_INET;
- ip4vhost->sin_port = htons(0);
- bind(sockfd, (struct sockaddr*)ip4vhost, sizeof(*ip4vhost));
- }
- dstaddr = (struct sockaddr*)ip4;
- dstaddrlen = sizeof(*ip4);
- } else
- return NULL;
- //prevent SIGPIPE
- #ifndef WIN32
- #if defined(SO_NOSIGPIPE)
- {
- int set = 1;
- setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
- }
- #else
- signal(SIGPIPE, SIG_IGN);
- #endif
- #endif
- //make sockfd unblocking
- #if defined(F_GETFL)
- {
- int fcntl_flags;
- fcntl_flags = fcntl(sockfd, F_GETFL);
- fcntl(sockfd, F_SETFL, fcntl_flags|O_NONBLOCK);
- fcntl_flags = fcntl(sockfd, F_GETFD);
- fcntl(sockfd, F_SETFD, fcntl_flags|FD_CLOEXEC);
- }
- #else
- /* I hope you're using the Win32 backend or something else that
- * automatically marks the file descriptor non-blocking...
- */
- #endif
- descriptor = iohandler_add(sockfd, IOTYPE_CLIENT, NULL, callback);
- if(!descriptor) {
- close(sockfd);
- return NULL;
- }
- connect(sockfd, dstaddr, dstaddrlen); //returns EINPROGRESS here (nonblocking)
- descriptor->state = IO_CONNECTING;
- descriptor->ssl = (ssl ? 1 : 0);
- descriptor->read_lines = 1;
- engine->update(descriptor);
- iohandler_log(IOLOG_DEBUG, "added client socket (%d) connecting to %s:%d", sockfd, hostname, port);
- return descriptor;
-}
-
-struct IODescriptor *iohandler_listen(const char *hostname, unsigned int port, iohandler_callback *callback) {
- return iohandler_listen_flags(hostname, port, callback, IOHANDLER_LISTEN_IPV4 | IOHANDLER_LISTEN_IPV6);
-}
-
-struct IODescriptor *iohandler_listen_flags(const char *hostname, unsigned int port, iohandler_callback *callback, int flags) {
- int sockfd;
- struct addrinfo hints, *res;
- struct sockaddr_in *ip4 = NULL;
- struct sockaddr_in6 *ip6 = NULL;
- struct IODescriptor *descriptor;
- unsigned int opt;
-
- if(!engine) {
- iohandler_init_engine();
- if(!engine) return NULL;
- }
- memset (&hints, 0, sizeof (hints));
- hints.ai_family = PF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_flags |= AI_CANONNAME;
- if (getaddrinfo (hostname, NULL, &hints, &res)) {
- return NULL;
- }
- while (res) {
- switch (res->ai_family) {
- case AF_INET:
- ip4 = (struct sockaddr_in *) res->ai_addr;
- break;
- case AF_INET6:
- ip6 = (struct sockaddr_in6 *) res->ai_addr;
- break;
- }
- res = res->ai_next;
- freeaddrinfo(res);
- }
-
- if(ip6 && (flags & IOHANDLER_LISTEN_IPV6)) {
- sockfd = socket(AF_INET6, SOCK_STREAM, 0);
- if(sockfd == -1) return NULL;
-
- opt = 1;
- setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
-
- ip6->sin6_family = AF_INET6;
- ip6->sin6_port = htons(port);
-
- bind(sockfd, (struct sockaddr*)ip6, sizeof(*ip6));
- } else if(ip4 && (flags & IOHANDLER_LISTEN_IPV4)) {
- sockfd = socket(AF_INET, SOCK_STREAM, 0);
- if(sockfd == -1) return NULL;
-
- opt = 1;
- setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt, sizeof(opt));
-
- ip4->sin_family = AF_INET;
- ip4->sin_port = htons(port);
-
- bind(sockfd, (struct sockaddr*)ip4, sizeof(*ip4));
- } else
- return NULL;
- //prevent SIGPIPE
- #ifndef WIN32
- #if defined(SO_NOSIGPIPE)
- {
- int set = 1;
- setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
- }
- #else
- signal(SIGPIPE, SIG_IGN);
- #endif
- #endif
- //make sockfd unblocking
- #if defined(F_GETFL)
- {
- int flag;
- flag = fcntl(sockfd, F_GETFL);
- fcntl(sockfd, F_SETFL, flag|O_NONBLOCK);
- flag = fcntl(sockfd, F_GETFD);
- fcntl(sockfd, F_SETFD, flag|FD_CLOEXEC);
- }
- #else
- /* I hope you're using the Win32 backend or something else that
- * automatically marks the file descriptor non-blocking...
- */
- #endif
- descriptor = iohandler_add(sockfd, IOTYPE_SERVER, NULL, callback);
- if(!descriptor) {
- close(sockfd);
- return NULL;
- }
- listen(sockfd, 1);
- descriptor->state = IO_LISTENING;
- engine->update(descriptor);
- iohandler_log(IOLOG_DEBUG, "added server socket (%d) listening on %s:%d", sockfd, hostname, port);
- return descriptor;
-}
-
-struct IODescriptor *iohandler_listen_ssl(const char *hostname, unsigned int port, const char *certfile, const char *keyfile, iohandler_callback *callback) {
- return iohandler_listen_ssl_flags(hostname, port, certfile, keyfile, callback, IOHANDLER_LISTEN_IPV4 | IOHANDLER_LISTEN_IPV6);
-}
-
-struct IODescriptor *iohandler_listen_ssl_flags(const char *hostname, unsigned int port, const char *certfile, const char *keyfile, iohandler_callback *callback, int flags) {
- struct IODescriptor *descriptor = iohandler_listen_flags(hostname, port, callback, flags);
- if(!descriptor)
- return NULL;
- //SSL Server Socket
- iohandler_ssl_listen(descriptor, certfile, keyfile);
- if(descriptor->sslnode)
- descriptor->ssl = 1;
- return descriptor;
-}
-
-void iohandler_write(struct IODescriptor *iofd, const char *line) {
- size_t linelen = strlen(line);
- iohandler_send(iofd, line, linelen);
-}
-
-void iohandler_send(struct IODescriptor *iofd, const char *data, size_t datalen) {
- if(iofd->type == IOTYPE_TIMER || iofd->state == IO_CLOSED) {
- iohandler_log(IOLOG_ERROR, "could not write to socket (%s)", (iofd->type == IOTYPE_TIMER ? "IOTYPE_TIMER" : "IO_CLOSED"));
- return;
- }
- iohandler_log(IOLOG_DEBUG, "add %d to writebuf (fd: %d): %s", datalen, iofd->fd, data);
- if(iofd->writebuf.buflen < iofd->writebuf.bufpos + datalen) {
- 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));
- iohandler_increase_iobuf(&iofd->writebuf, iofd->writebuf.bufpos + datalen);
- if(iofd->writebuf.buflen < iofd->writebuf.bufpos + datalen) {
- 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));
- return;
- }
- }
- memcpy(iofd->writebuf.buffer + iofd->writebuf.bufpos, data, datalen);
- iofd->writebuf.bufpos += datalen;
- engine->update(iofd);
-}
-
-void iohandler_printf(struct IODescriptor *iofd, const char *text, ...) {
- va_list arg_list;
- char sendBuf[IO_LINE_LEN];
- int pos;
- sendBuf[0] = '\0';
- va_start(arg_list, text);
- pos = vsnprintf(sendBuf, IO_LINE_LEN - 2, text, arg_list);
- va_end(arg_list);
- if (pos < 0 || pos > (IO_LINE_LEN - 2)) pos = IO_LINE_LEN - 2;
- sendBuf[pos] = '\n';
- sendBuf[pos+1] = '\0';
- iohandler_send(iofd, sendBuf, pos+1);
-}
-
-static int iohandler_try_write(struct IODescriptor *iofd) {
- if(!iofd->writebuf.bufpos) return 0;
- iohandler_log(IOLOG_DEBUG, "write writebuf (%d bytes) to socket (fd: %d)", iofd->writebuf.bufpos, iofd->fd);
- int res;
- if(iofd->ssl_active)
- res = iohandler_ssl_write(iofd, iofd->writebuf.buffer, iofd->writebuf.bufpos);
- else
- res = send(iofd->fd, iofd->writebuf.buffer, iofd->writebuf.bufpos, 0);
- if(res < 0) {
- if (errno != EAGAIN && errno != EWOULDBLOCK)
- iohandler_log(IOLOG_ERROR, "could not write to socket (fd: %d): %d - %s", iofd->fd, errno, strerror(errno));
- else
- res = 0;
- } else {
- iofd->writebuf.bufpos -= res;
- if(iofd->state != IO_CLOSED)
- engine->update(iofd);
- }
- return res;
-}
-
-void iohandler_close(struct IODescriptor *iofd) {
- int engine_remove = 1;
- iofd->state = IO_CLOSED;
- if(iofd->writebuf.bufpos) {
- //try to send everything before closing
-#if defined(F_GETFL)
- {
- int flags;
- flags = fcntl(iofd->fd, F_GETFL);
- fcntl(iofd->fd, F_SETFL, flags & ~O_NONBLOCK);
- flags = fcntl(iofd->fd, F_GETFD);
- fcntl(iofd->fd, F_SETFD, flags|FD_CLOEXEC);
- }
-#else
- engine_remove = 0;
- engine->remove(iofd);
-#endif
- iohandler_try_write(iofd);
- }
- //close IODescriptor
- if(iofd->ssl)
- iohandler_ssl_disconnect(iofd);
- if(iofd->type == IOTYPE_SERVER || iofd->type == IOTYPE_CLIENT || iofd->type == IOTYPE_STDIN)
- close(iofd->fd);
- iohandler_remove(iofd, engine_remove);
-}
-
-void iohandler_update(struct IODescriptor *iofd) {
- iohandler_log(IOLOG_DEBUG, "external call to iohandler_update (fd: %d)", iofd->fd);
- engine->update(iofd);
-}
-
-static void iohandler_trigger_event(struct IOEvent *event) {
- if(!event->iofd->callback) return;
- 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);
- event->iofd->callback(event);
-}
-
-void iohandler_events(struct IODescriptor *iofd, int readable, int writeable) {
- struct IOEvent callback_event;
- callback_event.type = IOEVENT_IGNORE;
- callback_event.iofd = iofd;
- switch(iofd->state) {
- case IO_SSLWAIT:
- if(!readable && !writeable) {
- if(!iofd->ssl_server_hs) {
- callback_event.type = IOEVENT_SSLFAILED;
- iofd->state = IO_CLOSED;
- engine->update(iofd);
- } else
- iohandler_close(iofd);
- } else if(iofd->ssl_server_hs) {
- iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_server_handshake for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
- iohandler_ssl_server_handshake(iofd);
- } else {
- iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_client_handshake for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
- iohandler_ssl_client_handshake(iofd);
- }
- break;
- case IO_CLOSED:
- if(iofd->type == IOTYPE_TIMER)
- callback_event.type = IOEVENT_TIMEOUT;
- break;
- case IO_LISTENING:
- if(readable) {
- callback_event.data.accept_fd = accept(iofd->fd, NULL, 0);
- if(callback_event.data.accept_fd < 0) {
- iohandler_log(IOLOG_ERROR, "could not accept client (server fd: %d): %d - %s", iofd->fd, errno, strerror(errno));
- } else if(iofd->ssl) {
- struct IODescriptor *client_iofd = iohandler_add(callback_event.data.accept_fd, IOTYPE_CLIENT, NULL, NULL);
- iohandler_ssl_client_accepted(iofd, client_iofd);
- } else
- callback_event.type = IOEVENT_ACCEPT;
- }
- break;
- case IO_CONNECTING:
- if(readable) { //could not connect
- callback_event.type = IOEVENT_NOTCONNECTED;
- //socklen_t arglen;
- //arglen = sizeof(callback_event.data.errid);
- //if (getsockopt(iofd->fd, SOL_SOCKET, SO_ERROR, &callback_event.data.errid, &arglen) < 0)
- // callback_event.data.errid = errno;
- iofd->state = IO_CLOSED;
- engine->update(iofd);
- } else if(writeable) {
- if(iofd->ssl && !iofd->ssl_active) {
- iohandler_log(IOLOG_DEBUG, "triggering iohandler_ssl_connect for %s (fd: %d)", iohandler_iotype_name(iofd->type), iofd->fd);
- iohandler_ssl_connect(iofd);
- return;
- }
- if(iofd->ssl && iofd->ssl_server_hs) {
- callback_event.type = IOEVENT_SSLACCEPT;
- callback_event.iofd = iofd->data;
- callback_event.data.accept_iofd = iofd;
- iofd->data = NULL;
- }
- else
- callback_event.type = IOEVENT_CONNECTED;
- iofd->state = IO_CONNECTED;
- engine->update(iofd);
- }
- break;
- case IO_CONNECTED:
- if(readable) {
- if(iofd->read_lines) {
- int bytes;
-
- if(iofd->ssl_active)
- bytes = iohandler_ssl_read(iofd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos);
- else {
- if(iofd->type == IOTYPE_STDIN)
- #ifdef WIN32
- bytes = readable;
- #else
- bytes = read(iofd->fd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos);
- #endif
- else
- bytes = recv(iofd->fd, iofd->readbuf.buffer + iofd->readbuf.bufpos, iofd->readbuf.buflen - iofd->readbuf.bufpos, 0);
- }
- if(bytes <= 0) {
- if (errno != EAGAIN || errno != EWOULDBLOCK) {
- iofd->state = IO_CLOSED;
- engine->update(iofd);
- callback_event.type = IOEVENT_CLOSED;
- callback_event.data.errid = errno;
- }
- } else {
- int i, used_bytes = 0;
- iohandler_log(IOLOG_DEBUG, "received %d bytes (fd: %d). readbuf position: %d", bytes, iofd->fd, iofd->readbuf.bufpos);
- iofd->readbuf.bufpos += bytes;
- callback_event.type = IOEVENT_RECV;
- for(i = 0; i < iofd->readbuf.bufpos; i++) {
- if(iofd->readbuf.buffer[i] == '\r' && iofd->readbuf.buffer[i+1] == '\n')
- iofd->readbuf.buffer[i] = 0;
- else if(iofd->readbuf.buffer[i] == '\n' || iofd->readbuf.buffer[i] == '\r') {
- iofd->readbuf.buffer[i] = 0;
- callback_event.data.recv_str = iofd->readbuf.buffer + used_bytes;
- iohandler_log(IOLOG_DEBUG, "parsed line (%d bytes): %s", i - used_bytes, iofd->readbuf.buffer + used_bytes);
- used_bytes = i+1;
- iohandler_trigger_event(&callback_event);
- } else if(i + 1 - used_bytes >= IO_LINE_LEN) { //512 max
- iofd->readbuf.buffer[i] = 0;
- callback_event.data.recv_str = iofd->readbuf.buffer + used_bytes;
- iohandler_log(IOLOG_DEBUG, "parsed and stripped line (%d bytes): %s", i - used_bytes, iofd->readbuf.buffer + used_bytes);
- for(; i < iofd->readbuf.bufpos; i++) { //skip the rest of the line
- if(iofd->readbuf.buffer[i] == '\n' || (iofd->readbuf.buffer[i] == '\r' && iofd->readbuf.buffer[i+1] != '\n')) {
- break;
- }
- }
- used_bytes = i+1;
- iohandler_trigger_event(&callback_event);
- }
- }
- if(used_bytes) {
- if(used_bytes == iofd->readbuf.bufpos) {
- iofd->readbuf.bufpos = 0;
- iohandler_log(IOLOG_DEBUG, "readbuf fully processed (set buffer position to 0)");
- } else {
- iohandler_log(IOLOG_DEBUG, "readbuf rest: %d bytes (used %d bytes)", iofd->readbuf.bufpos - used_bytes, used_bytes);
- memmove(iofd->readbuf.buffer, iofd->readbuf.buffer + used_bytes, iofd->readbuf.bufpos - used_bytes);
- iofd->readbuf.bufpos -= used_bytes;
- }
- }
- callback_event.type = IOEVENT_IGNORE;
- }
- } else
- callback_event.type = IOEVENT_READABLE;
- }
- if(writeable) {
- int bytes;
- bytes = iohandler_try_write(iofd);
- if(bytes < 0) {
- iofd->state = IO_CLOSED;
- engine->update(iofd);
- callback_event.type = IOEVENT_CLOSED;
- callback_event.data.errid = errno;
- }
- }
- break;
- }
- if(callback_event.type == IOEVENT_IGNORE && !readable && !writeable)
- callback_event.type = IOEVENT_TIMEOUT;
- if(callback_event.type != IOEVENT_IGNORE)
- iohandler_trigger_event(&callback_event);
-}
-
-void iohandler_poll() {
- struct timeval timeout;
- timeout.tv_sec = IO_MAX_TIMEOUT;
- timeout.tv_usec = 0;
- iohandler_poll_timeout(timeout);
-}
-
-void iohandler_poll_timeout(struct timeval timeout) {
- if(engine) {
- IOSYNCHRONIZE(io_poll_sync); //quite senceless multithread support... better support will follow
- engine->loop(&timeout);
- IODESYNCHRONIZE(io_poll_sync);
- }
-}
-
-//debugging functions
-char *iohandler_iotype_name(enum IOType type) {
- switch(type) {
- case IOTYPE_UNKNOWN:
- return "IOTYPE_UNKNOWN";
- case IOTYPE_SERVER:
- return "IOTYPE_SERVER";
- case IOTYPE_CLIENT:
- return "IOTYPE_CLIENT";
- case IOTYPE_STDIN:
- return "IOTYPE_STDIN";
- case IOTYPE_TIMER:
- return "IOTYPE_TIMER";
- default:
- return "(UNDEFINED)";
- }
-}
-
-char *iohandler_iostatus_name(enum IOStatus status) {
- switch(status) {
- case IO_CLOSED:
- return "IO_CLOSED";
- case IO_LISTENING:
- return "IO_LISTENING";
- case IO_CONNECTING:
- return "IO_CONNECTING";
- case IO_CONNECTED:
- return "IO_CONNECTED";
- case IO_SSLWAIT:
- return "IO_SSLWAIT";
- default:
- return "(UNDEFINED)";
- }
-}
-
-char *iohandler_ioeventtype_name(enum IOEventType type) {
- switch(type) {
- case IOEVENT_IGNORE:
- return "IOEVENT_IGNORE";
- case IOEVENT_READABLE:
- return "IOEVENT_READABLE";
- case IOEVENT_RECV:
- return "IOEVENT_RECV";
- case IOEVENT_CONNECTED:
- return "IOEVENT_CONNECTED";
- case IOEVENT_NOTCONNECTED:
- return "IOEVENT_NOTCONNECTED";
- case IOEVENT_CLOSED:
- return "IOEVENT_CLOSED";
- case IOEVENT_ACCEPT:
- return "IOEVENT_ACCEPT";
- case IOEVENT_SSLACCEPT:
- return "IOEVENT_SSLACCEPT";
- case IOEVENT_TIMEOUT:
- return "IOEVENT_TIMEOUT";
- default:
- return "(UNDEFINED)";
- }
-}
projects / ChatPrototype.git / blobdiff