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165 lines (143 loc) · 4.33 KB
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#include <arpa/inet.h>
#include <assert.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <time.h>
#ifdef EPOLL
#include <sys/epoll.h>
#include <sys/timerfd.h>
#else
#include <sys/event.h>
#endif
#ifndef HTTPSERVER_IMPL
#include "common.h"
#include "server.h"
#endif
void _hs_bind_localhost(int s, struct sockaddr_in *addr, const char *ipaddr,
int port) {
addr->sin_family = AF_INET;
if (ipaddr == NULL) {
addr->sin_addr.s_addr = INADDR_ANY;
} else {
addr->sin_addr.s_addr = inet_addr(ipaddr);
}
addr->sin_port = htons(port);
int rc = bind(s, (struct sockaddr *)addr, sizeof(struct sockaddr_in));
if (rc < 0) {
exit(1);
}
}
#ifdef KQUEUE
void _hs_add_server_sock_events(http_server_t *serv) {
struct kevent ev_set;
EV_SET(&ev_set, serv->socket, EVFILT_READ, EV_ADD | EV_CLEAR, 0, 0, serv);
kevent(serv->loop, &ev_set, 1, NULL, 0, NULL);
}
void _hs_server_init_events(http_server_t *serv, hs_evt_cb_t unused) {
(void)unused;
serv->loop = kqueue();
struct kevent ev_set;
EV_SET(&ev_set, 1, EVFILT_TIMER, EV_ADD | EV_ENABLE, NOTE_SECONDS, 1, serv);
kevent(serv->loop, &ev_set, 1, NULL, 0, NULL);
}
int hs_server_run_event_loop(http_server_t *serv, const char *ipaddr) {
hs_server_listen_on_addr(serv, ipaddr);
struct kevent ev_list[1];
while (1) {
int nev = kevent(serv->loop, NULL, 0, ev_list, 1, NULL);
for (int i = 0; i < nev; i++) {
ev_cb_t *ev_cb = (ev_cb_t *)ev_list[i].udata;
ev_cb->handler(&ev_list[i]);
}
}
return 0;
}
int hs_server_poll_events(http_server_t *serv) {
struct kevent ev;
struct timespec ts = {0, 0};
int nev = kevent(serv->loop, NULL, 0, &ev, 1, &ts);
if (nev <= 0)
return nev;
ev_cb_t *ev_cb = (ev_cb_t *)ev.udata;
ev_cb->handler(&ev);
return nev;
}
#else
void _hs_server_init_events(http_server_t *serv, hs_evt_cb_t timer_cb) {
serv->loop = epoll_create1(0);
serv->timer_handler = timer_cb;
int tfd = timerfd_create(CLOCK_MONOTONIC, 0);
struct itimerspec ts = {};
ts.it_value.tv_sec = 1;
ts.it_interval.tv_sec = 1;
timerfd_settime(tfd, 0, &ts, NULL);
struct epoll_event ev;
ev.events = EPOLLIN | EPOLLET;
ev.data.ptr = &serv->timer_handler;
epoll_ctl(serv->loop, EPOLL_CTL_ADD, tfd, &ev);
serv->timerfd = tfd;
}
void _hs_add_server_sock_events(http_server_t *serv) {
struct epoll_event ev;
ev.events = EPOLLIN | EPOLLET;
ev.data.ptr = serv;
epoll_ctl(serv->loop, EPOLL_CTL_ADD, serv->socket, &ev);
}
int hs_server_run_event_loop(http_server_t *serv, const char *ipaddr) {
hs_server_listen_on_addr(serv, ipaddr);
struct epoll_event ev_list[1];
while (1) {
int nev = epoll_wait(serv->loop, ev_list, 1, -1);
for (int i = 0; i < nev; i++) {
ev_cb_t *ev_cb = (ev_cb_t *)ev_list[i].data.ptr;
ev_cb->handler(&ev_list[i]);
}
}
return 0;
}
int hs_server_poll_events(http_server_t *serv) {
struct epoll_event ev;
int nev = epoll_wait(serv->loop, &ev, 1, 0);
if (nev <= 0)
return nev;
ev_cb_t *ev_cb = (ev_cb_t *)ev.data.ptr;
ev_cb->handler(&ev);
return nev;
}
#endif
void hs_server_listen_on_addr(http_server_t *serv, const char *ipaddr) {
// Ignore SIGPIPE. We handle these errors at the call site.
signal(SIGPIPE, SIG_IGN);
serv->socket = socket(AF_INET, SOCK_STREAM, 0);
int flag = 1;
setsockopt(serv->socket, SOL_SOCKET, SO_REUSEPORT, &flag, sizeof(flag));
_hs_bind_localhost(serv->socket, &serv->addr, ipaddr, serv->port);
serv->len = sizeof(serv->addr);
int flags = fcntl(serv->socket, F_GETFL, 0);
fcntl(serv->socket, F_SETFL, flags | O_NONBLOCK);
listen(serv->socket, 128);
_hs_add_server_sock_events(serv);
}
void hs_generate_date_time(char *datetime) {
time_t rawtime;
struct tm *timeinfo;
time(&rawtime);
timeinfo = gmtime(&rawtime);
strftime(datetime, 32, "%a, %d %b %Y %T GMT", timeinfo);
}
http_server_t *hs_server_init(int port, void (*handler)(http_request_t *),
hs_evt_cb_t accept_cb,
hs_evt_cb_t epoll_timer_cb) {
http_server_t *serv = (http_server_t *)malloc(sizeof(http_server_t));
assert(serv != NULL);
serv->port = port;
serv->memused = 0;
serv->handler = accept_cb;
_hs_server_init_events(serv, epoll_timer_cb);
hs_generate_date_time(serv->date);
serv->request_handler = handler;
return serv;
}