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#include "conf.h"
#include "config.h"
#include "nastdio.h"
#include "nastipc.h"
#include "cdb.h"
#include "fqm.h"
#include "log.h"
#include "memdb.h"
#include "mysqldb.h"
#include "periodic.h"
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <time.h>
#include <unistd.h>
char *progname;
time_t start_time;
static int
make_u_csock()
{
struct sockaddr_un sunix;
int sock;
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock == -1) {
log_err("Couldn't create unix socket: %s.", strerror(errno));
return -1;
}
memset(&sunix, 0, sizeof(sunix));
snprintf(sunix.sun_path, sizeof(sunix.sun_path), config.nast_sock);
sunix.sun_family = AF_UNIX;
(void)unlink(sunix.sun_path);
if (bind(sock, (struct sockaddr *)&sunix, sizeof(sunix)) == -1) {
log_err("Couldn't bind to unix socket: %s.", strerror(errno));
return -1;
}
(void)listen(sock, 10);
return sock;
}
static int
make_i_csock()
{
struct sockaddr_in sinet;
int sock;
sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock == -1) {
log_err("Couldn't create inet socket: %S.", strerror(errno));
return -1;
}
memset(&sinet, 0, sizeof(sinet));
sinet.sin_family = AF_INET;
sinet.sin_addr.s_addr = INADDR_ANY;
sinet.sin_port = htons(config.tcp_port);
if (bind(sock, (struct sockaddr *)&sinet, sizeof(sinet)) == -1) {
log_err("Couldn't bind to inet socket: %s.", strerror(errno));
return -1;
}
(void)listen(sock, 10);
return sock;
}
static int
do_client_connect(int sock)
{
struct sockaddr_un saremote;
socklen_t addrlen;
int s;
addrlen = sizeof(saremote);
s = accept(sock, (struct sockaddr *)&saremote, &addrlen);
if (s == -1) {
log_err("Couldn't accept new connection: %s.",
strerror(errno));
return -1;
}
io_new(s);
return 0;
}
static int
init_daemon()
{
sigset_t sigmask;
log_open();
if (cdb_new())
return -1;
mysqldb_new();
if (memdb_new())
return -1;
/*
* Turn off SIGPIPE. The calls to write() will return fine with
* it off, and this means we don't have to do any signal mojo.
*/
(void)sigemptyset(&sigmask);
(void)sigaddset(&sigmask, SIGPIPE);
(void)sigprocmask(SIG_BLOCK, &sigmask, NULL);
/* Now we daemonise. */
switch (fork()) {
case 0:
setsid();
close(STDIN_FILENO);
close(STDOUT_FILENO);
break;
case -1:
log_err("Couldn't fork into daemon: %s.", strerror(errno));
return -1;
default:
exit(0);
}
return 0;
}
void
usage()
{
fprintf(stderr, "Usage: %s [options]\n"
"\t-d directory\tSpecify directory for nast files.\n",
progname);
exit(1);
}
int
main(int argc, char *argv[])
{
char ch;
int u_csock, i_csock;
progname = strrchr(argv[0], '/');
if (!progname)
progname = argv[0];
else
progname++;
/* Initialise configuration values from file. */
config_setdefaults();
while ((ch = getopt(argc, argv, "d:")) != -1) {
switch (ch) {
case 'd':
config.nast_dir = optarg;
break;
default:
usage();
/* NOTREACHED */
}
}
if (config_init())
return 1;
if (init_daemon()) {
log_err("Couldn't initialise nastd. Exiting.");
return 1;
}
u_csock = make_u_csock();
if (u_csock == -1)
return 1;
i_csock = make_i_csock();
if (i_csock == -1)
return 1;
/* Create the FQM threads. */
(void)fqm_new(10);
/*
* Creat a thread that runs periodically.
*/
if (periodic_new() == -1) {
log_err("Couldn't start periodic thread. Exiting.");
return 1;
}
start_time = time(NULL);
/*
* Main control loop. Sit on the socket and wait for a client to
* connect. As soon as it does, make another thread to handle it.
*/
for (;;) {
fd_set read_fds;
int rc;
FD_ZERO(&read_fds);
FD_SET(i_csock, &read_fds);
FD_SET(u_csock, &read_fds);
rc = select(10, &read_fds, NULL, NULL, NULL);
if (rc == -1) {
log_err("Couldn't select on sockets: %s.",
strerror(errno));
sleep(30);
}
if (FD_ISSET(i_csock, &read_fds))
(void)do_client_connect(i_csock);
if (FD_ISSET(u_csock, &read_fds))
(void)do_client_connect(u_csock);
}
return 0;
}
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