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/* Copyright (c) 2015-2016 Yoran Heling
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "fcgy.h"
/* Time to wait before retrying a failed accept() */
#define LISTEN_BACKOFF_TIME 3.
static void front_timer_cb(EV_P_ ev_timer *w, int revents) {
fcgy_front *f = w->data;
ev_io_start(EV_A_ f->listener);
}
static void front_accept_cb(EV_P_ ev_io *w, int revents) {
fcgy_front *f = w->data;
int fd = accept(w->fd, NULL, NULL);
if(fd < 0 && (errno == EINTR || errno == EWOULDBLOCK || errno == EAGAIN))
return;
if(fd < 0) {
fprintf(stderr, "Error accept()'ing: %s.\n", strerror(errno));
ev_io_stop(EV_A_ w);
ev_timer_set(f->backoff, LISTEN_BACKOFF_TIME, 0.);
ev_timer_start(EV_A_ f->backoff);
return;
}
fconn_fastcgi_create(f->app, fd, fd);
fprintf(stderr, "HI!\n");
}
static fcgy_front *front_create(fcgy_app *app, fcgy_front_type t, const char *addr, uint16_t port) {
fcgy_front *f = calloc(1, sizeof(fcgy_front));
f->app = app;
f->type = t;
f->port = port;
f->fd = -1;
f->addr = strdup(addr);
ev_init(f->listener, front_accept_cb);
ev_init(f->backoff, front_timer_cb);
f->listener->data = f;
f->backoff->data = f;
return f;
}
/* TODO: Better error reporting */
static int front_bind(fcgy_front *f) {
switch(f->type) {
case FCGY_FRONT_UNIX: {
struct sockaddr_un addr;
addr.sun_family = AF_UNIX;
int r = snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", f->addr);
if(r < 0 || r >= (int)sizeof(addr.sun_path))
return -1;
f->fd = util_serversock(AF_UNIX, &addr, sizeof(addr), FCGY_CLOEXEC|FCGY_NONBLOCK);
if(f->fd < 0)
return -1;
break;
}
case FCGY_FRONT_TCP:
case FCGY_FRONT_STDIO:
break; /* TODO */
}
return 0;
}
static void front_start(fcgy_front *f) {
switch(f->type) {
case FCGY_FRONT_UNIX:
case FCGY_FRONT_TCP:
ev_io_set(f->listener, f->fd, EV_READ);
ev_io_start(EV_DEFAULT_UC_ f->listener);
break;
case FCGY_FRONT_STDIO:
/* TODO: Create connection struct */
break;
}
}
static void front_stop(fcgy_front *f) {
if(f->fd < 0)
return;
switch(f->type) {
case FCGY_FRONT_UNIX:
unlink(f->addr);
case FCGY_FRONT_TCP:
ev_io_stop(EV_DEFAULT_UC_ f->listener);
ev_timer_stop(EV_DEFAULT_UC_ f->backoff);
break;
case FCGY_FRONT_STDIO:
/* TODO: Nothing? */
break;
}
close(f->fd);
f->fd = -1;
}
fcgy_app *app_create() {
fcgy_app *app = calloc(1, sizeof(fcgy_app));
return app;
}
/* Returns 0 on success, -1 on error.
* Writes a string to *err on error. */
int app_config(fcgy_app *app, fcgy_config_name name, const char *val, char *err, size_t errlen) {
fcgy_front *f;
switch(name) {
case FCGY_CONFIG_APP_UNIX:
f = front_create(app, FCGY_FRONT_UNIX, val, 0);
hlist_prepend(app->fronts, f);
return 0;
default:
assert(0 && "app_config() called on invalid option");
}
return -1;
}
/* TODO: Error reporting */
int app_bind(fcgy_app *app) {
fcgy_front *f;
int n = 0;
for(f=app->fronts; n == 0 && f; f=f->next)
n = front_bind(f);
return n;
}
void app_run(fcgy_app *app) {
fcgy_front *f;
for(f=app->fronts; f; f=f->next)
front_start(f);
}
void app_destroy(fcgy_app *app) {
while(app->fronts) {
fcgy_front *n = app->fronts;
hlist_remove(app->fronts, n);
front_stop(n);
free(n);
}
while(app->fconns)
fconn_fastcgi_destroy(app->fconns);
free(app);
}
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