/* $Id: yaz-proxy-main.cpp,v 1.19 2006/03/30 10:32:16 adam Exp $
Copyright (c) 1998-2006, Index Data.
This file is part of the yazproxy.
YAZ proxy 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 2, or (at your option) any later
version.
YAZ proxy 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 YAZ proxy; see the file LICENSE. If not, write to the
Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
*/
#include <signal.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#if HAVE_PWD_H
#include <pwd.h>
#endif
#include <stdarg.h>
#include <stdlib.h>
#include <yaz/log.h>
#include <yaz/options.h>
#include <yazpp/socket-manager.h>
#include <yazpp/pdu-assoc.h>
#include <yazproxy/proxy.h>
#if HAVE_XSLT
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxslt/xsltutils.h>
#include <libxslt/transform.h>
#endif
using namespace yazpp_1;
void usage(char *prog)
{
fprintf (stderr, "%s: [-a log] [-c config]\n"
" [-i sec] [-l log] [-m num] [-n num] [-p pidfile]"
" [-t target] [-T sec] [-u uid]\n"
" [-v level] [-X] @:port\n", prog);
exit (1);
}
static char *pid_fname = 0;
static char *uid = 0;
static char *log_file = 0;
static int debug = 0;
static int no_limit_files = 0;
int args(Yaz_Proxy *proxy, int argc, char **argv)
{
char *addr = 0;
char *arg;
char *prog = argv[0];
int ret;
while ((ret = options("o:a:t:v:c:u:i:m:l:T:p:n:X",
argv, argc, &arg)) != -2)
{
int err;
switch (ret)
{
case 0:
if (addr)
{
usage(prog);
return 1;
}
addr = arg;
break;
case 'a':
proxy->set_APDU_log(arg);
break;
case 'c':
err = proxy->set_config(arg);
if (err == -2)
{
fprintf(stderr, "Config file support not enabled (not using libxslt & libxml2)\n");
exit(1);
}
else if (err == -1)
{
fprintf(stderr, "Bad or missing file %s\n", arg);
exit(1);
}
break;
case 'i':
proxy->set_client_idletime(atoi(arg));
break;
case 'l':
yaz_log_init_file (arg);
log_file = xstrdup(arg);
break;
case 'm':
proxy->set_max_clients(atoi(arg));
break;
case 'n':
no_limit_files = atoi(arg);
break;
case 'o':
proxy->option("optimize", arg);
break;
case 'p':
if (!pid_fname)
pid_fname = xstrdup(arg);
break;
case 't':
proxy->set_default_target(arg);
break;
case 'T':
proxy->set_target_idletime(atoi(arg));
break;
case 'u':
if (!uid)
uid = xstrdup(arg);
break;
case 'v':
yaz_log_init_level (yaz_log_mask_str(arg));
break;
case 'X':
proxy->set_debug_mode(1);
debug = 1;
break;
default:
usage(prog);
return 1;
}
}
if (addr)
{
if (proxy->server(addr))
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "listen %s", addr);
exit(1);
}
}
else
{
usage(prog);
return 1;
}
return 0;
}
static Yaz_Proxy *static_yaz_proxy = 0;
static void sighup_handler(int num)
{
#if WIN32
#else
signal(SIGHUP, sighup_handler);
#endif
if (static_yaz_proxy)
static_yaz_proxy->reconfig();
}
#if HAVE_XSLT
static void proxy_xml_error_handler(void *ctx, const char *fmt, ...)
{
char buf[1024];
va_list ap;
va_start(ap, fmt);
#ifdef WIN32
vsprintf(buf, fmt, ap);
#else
vsnprintf(buf, sizeof(buf), fmt, ap);
#endif
yaz_log(YLOG_WARN, "%s: %s", (char*) ctx, buf);
va_end (ap);
}
#endif
static void child_run(SocketManager *m, int run)
{
#ifdef WIN32
#else
signal(SIGHUP, sighup_handler);
#endif
#if HAVE_XSLT
xmlSetGenericErrorFunc((void *) "XML", proxy_xml_error_handler);
xsltSetGenericErrorFunc((void *) "XSLT", proxy_xml_error_handler);
#endif
#ifdef WIN32
#else
yaz_log(YLOG_LOG, "0 proxy run=%d pid=%ld", run, (long) getpid());
#endif
if (no_limit_files)
{
#if HAVE_SETRLIMIT
struct rlimit limit_data;
limit_data.rlim_cur = no_limit_files;
limit_data.rlim_max = no_limit_files;
yaz_log(YLOG_LOG, "0 setrlimit NOFILE cur=%ld max=%ld",
(long) limit_data.rlim_cur, (long) limit_data.rlim_max);
if (setrlimit(RLIMIT_NOFILE, &limit_data))
yaz_log(YLOG_ERRNO|YLOG_WARN, "setrlimit");
#else
yaz_log(YLOG_WARN, "setrlimit unavablable. Option -n ignored");
#endif
}
#ifdef WIN32
#else
if (pid_fname)
{
FILE *f = fopen(pid_fname, "w");
if (!f)
{
yaz_log(YLOG_ERRNO|YLOG_FATAL, "Couldn't create %s", pid_fname);
exit(0);
}
fprintf(f, "%ld", (long) getpid());
fclose(f);
xfree(pid_fname);
}
if (uid)
{
struct passwd *pw;
if (!(pw = getpwnam(uid)))
{
yaz_log(YLOG_FATAL, "%s: Unknown user", uid);
exit(3);
}
if (log_file)
{
chown(log_file, pw->pw_uid, pw->pw_gid);
xfree(log_file);
}
if (setuid(pw->pw_uid) < 0)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "setuid");
exit(4);
}
xfree(uid);
}
#endif
#if HAVE_GETRLIMIT
struct rlimit limit_data;
getrlimit(RLIMIT_NOFILE, &limit_data);
yaz_log(YLOG_LOG, "0 getrlimit NOFILE cur=%ld max=%ld",
(long) limit_data.rlim_cur, (long) limit_data.rlim_max);
#endif
while (m->processEvent() > 0)
;
exit (0);
}
int main(int argc, char **argv)
{
#if HAVE_XSLT
xmlInitMemory();
LIBXML_TEST_VERSION
#endif
int cont = 1;
int run = 1;
SocketManager mySocketManager;
Yaz_Proxy proxy(new PDU_Assoc(&mySocketManager), &mySocketManager);
static_yaz_proxy = &proxy;
args(&proxy, argc, argv);
#ifdef WIN32
child_run(&mySocketManager, run);
#else
if (debug)
{
child_run(&mySocketManager, run);
exit(0);
}
while (cont)
{
pid_t p = fork();
if (p == (pid_t) -1)
{
yaz_log(YLOG_FATAL|YLOG_ERRNO, "fork");
exit(1);
}
else if (p == 0)
{
child_run(&mySocketManager, run);
}
pid_t p1;
int status;
p1 = wait(&status);
yaz_log_reopen();
if (p1 != p)
{
yaz_log(YLOG_FATAL, "p1=%d != p=%d", p1, p);
exit(1);
}
if (WIFSIGNALED(status))
{
switch(WTERMSIG(status)) {
case SIGILL:
yaz_log(YLOG_WARN, "Received SIGILL from child %ld", (long) p);
cont = 1;
break;
case SIGABRT:
yaz_log(YLOG_WARN, "Received SIGABRT from child %ld", (long) p);
cont = 1;
break ;
case SIGSEGV:
yaz_log(YLOG_WARN, "Received SIGSEGV from child %ld", (long) p);
cont = 1;
break;
case SIGBUS:
yaz_log(YLOG_WARN, "Received SIGBUS from child %ld", (long) p);
cont = 1;
break;
case SIGTERM:
yaz_log(YLOG_LOG, "Received SIGTERM from child %ld",
(long) p);
cont = 0;
break;
default:
yaz_log(YLOG_WARN, "Received SIG %d from child %ld",
WTERMSIG(status), (long) p);
cont = 0;
}
}
else if (status == 0)
cont = 0;
else
{
yaz_log(YLOG_LOG, "Exit %d from child %ld", status, (long) p);
cont = 1;
}
if (cont)
sleep(1 + run/5);
run++;
}
#endif
exit (0);
return 0;
}
/*
* Local variables:
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/
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