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/*
* (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "ixp.h"
static unsigned char *msg[IXP_MAX_MSG];
static Vector *
vector_of_conns(ConnVector *cv)
{
return (Vector *) cv;
}
Vector *
ixp_vector_of_maps(MapVector *mv)
{
return (Vector *) mv;
}
IXPConn *ixp_server_open_conn(IXPServer *s, int fd, void (*read)(IXPConn *c),
void (*close)(IXPConn *c))
{
IXPConn *c = cext_emallocz(sizeof(IXPConn));
c->fd = fd;
c->srv = s;
c->read = read;
c->close = close;
cext_vattach(vector_of_conns(&s->conn), c);
return c;
}
void
ixp_server_close_conn(IXPConn *c)
{
IXPServer *s = c->srv;
cext_vdetach(vector_of_conns(&s->conn), c);
while(c->map.size) {
IXPMap *m = c->map.data[0];
cext_vdetach(ixp_vector_of_maps(&c->map), m);
free(m);
}
shutdown(c->fd, SHUT_RDWR);
close(c->fd);
free(c);
}
static void
prepare_select(IXPServer *s)
{
int i;
FD_ZERO(&s->rd);
for(i = 0; i < s->conn.size; i++) {
if(s->maxfd < s->conn.data[i]->fd)
s->maxfd = s->conn.data[i]->fd;
if(s->conn.data[i]->read)
FD_SET(s->conn.data[i]->fd, &s->rd);
}
}
static void
handle_conns(IXPServer *s)
{
int i;
for(i = 0; i < s->conn.size; i++)
if(FD_ISSET(s->conn.data[i]->fd, &s->rd) && s->conn.data[i]->read)
/* call read handler */
s->conn.data[i]->read(s->conn.data[i]);
}
char *
ixp_server_loop(IXPServer *s)
{
int r;
s->running = 1;
/* main loop */
while(s->running) {
prepare_select(s);
r = select(s->maxfd + 1, &s->rd, 0, 0, 0);
if(r == -1 && errno == EINTR)
continue;
if(r < 0)
return "fatal select error";
else if(r > 0)
handle_conns(s);
}
return nil;
}
IXPMap *
ixp_server_fid2map(IXPConn *c, unsigned int fid)
{
unsigned int i;
for(i = 0; i < c->map.size; i++)
if(c->map.data[i]->fid == fid)
return c->map.data[i];
return nil;
}
unsigned int
ixp_server_receive_fcall(IXPConn *c, Fcall *fcall)
{
unsigned int msize;
char *errstr = 0;
if(!(msize = ixp_recv_message(c->fd, msg, IXP_MAX_MSG, &errstr))) {
if(c->close)
c->close(c);
return 0;
}
return ixp_msg2fcall(fcall, msg, IXP_MAX_MSG);
}
int
ixp_server_respond_fcall(IXPConn *c, Fcall *fcall)
{
char *errstr;
unsigned int msize = ixp_fcall2msg(msg, fcall, IXP_MAX_MSG);
if(ixp_send_message(c->fd, msg, msize, &errstr) != msize) {
if(c->close)
c->close(c);
return -1;
}
return 0;
}
int
ixp_server_respond_error(IXPConn *c, Fcall *fcall, char *errstr)
{
unsigned int msize;
fcall->id = RERROR;
cext_strlcpy(fcall->errstr, errstr, sizeof(fcall->errstr));
msize = ixp_fcall2msg(msg, fcall, IXP_MAX_MSG);
if(ixp_send_message(c->fd, msg, msize, &errstr) != msize) {
if(c->close)
c->close(c);
return -1;
}
return 0;
}
void
ixp_server_close(IXPServer *s)
{
unsigned int i;
for(i = 0; i < s->conn.size; i++)
if(s->conn.data[i]->close)
s->conn.data[i]->close(s->conn.data[i]);
}
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