src/metaproxy_prog.cpp

   1 /* This file is part of Metaproxy.
   2    Copyright (C) 2005-2010 Index Data
   3
   4 Metaproxy is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with this program; if not, write to the Free Software
  16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18
  19 #include "config.hpp"
  20
  21 #include <yaz/log.h>
  22 #include <yaz/options.h>
  23 #include <yaz/daemon.h>
  24
  25 #include <yaz/sc.h>
  26 #include <iostream>
  27 #include <stdexcept>
  28 #include <libxml/xinclude.h>
  29
  30 #include <metaproxy/filter.hpp>
  31 #include <metaproxy/package.hpp>
  32 #include "router_flexml.hpp"
  33 #include "factory_static.hpp"
  34
  35 #if HAVE_UNISTD_H
  36 #include <unistd.h>
  37 #endif
  38 #include <signal.h>
  39 #ifdef WIN32
  40 #include <direct.h>
  41 #include <io.h>
  42 #include <process.h>
  43 #endif
  44
  45 namespace mp = metaproxy_1;
  46
  47 mp::RouterFleXML *routerp = 0;
  48
  49 #if HAVE_UNISTD_H
  50 static pid_t process_group = 0;
  51
  52 static void sig_term_handler(int s)
  53 {
  54     kill(-process_group, SIGTERM); /* kill all children processes as well */
  55     exit(0);
  56 }
  57 #endif
  58
  59 static void handler(void *data)
  60 {
  61     routerp = (mp::RouterFleXML*) data;
  62
  63 #if HAVE_UNISTD_H
  64     /* make the current working process group leader */
  65     setpgid(0, 0);
  66     process_group = getpgid(0); // save process group ID
  67
  68     signal(SIGTERM, sig_term_handler);
  69 #endif
  70
  71     mp::Package pack;
  72     pack.router(*routerp).move(); /* should never exit */
  73 }
  74
  75 static int sc_main(
  76     yaz_sc_t s,
  77     int argc, char **argv)
  78 {
  79     try
  80     {
  81         const char *fname = 0;
  82         int ret;
  83         char *arg;
  84         unsigned mode = 0;
  85         const char *pidfile = 0;
  86         const char *uid = 0;
  87
  88         while ((ret = options("c{config}:Dh{help}l:p:u:V{version}w:X",
  89                               argv, argc, &arg)) != -2)
  90         {
  91             switch (ret)
  92             {
  93             case 'c':
  94                 fname = arg;
  95                 break;
  96             case 'D':
  97                 mode = YAZ_DAEMON_FORK|YAZ_DAEMON_KEEPALIVE;
  98                 break;
  99             case 'h':
 100                 std::cerr << "metaproxy\n"
 101                     " -h|--help     help\n"
 102                     " -V|--version  version\n"
 103                     " -c|--config f config filename\n"
 104                     " -D            daemon and keepalive operation\n"
 105                     " -l f          log file f\n"
 106                     " -p f          pid file f\n"
 107                     " -u id         change uid to id\n"
 108                     " -w dir        changes working directory to dir\n"
 109                     " -X            debug mode (no fork/daemon mode)\n"
 110 #ifdef WIN32
 111                     " -install      install windows service\n"
 112                     " -remove       remove windows service\n"
 113 #endif
 114
 115                           << std::endl;
 116                 break;
 117             case 'l':
 118                 yaz_log_init_file(arg);
 119                 break;
 120             case 'p':
 121                 pidfile = arg;
 122                 break;
 123             case 'u':
 124                 uid = arg;
 125                 break;
 126             case 'V':
 127                 std::cout << VERSION "\n";
 128                 return 0;
 129                 break;
 130             case 'w':
 131                 if (
 132 #ifdef WIN32
 133                     _chdir(arg)
 134 #else
 135                     chdir(arg)
 136 #endif
 137                    )
 138                 {
 139                     std::cerr << "chdir " << arg << " failed" << std::endl;
 140                     return 1;
 141                 }
 142             case 'X':
 143                 mode = YAZ_DAEMON_DEBUG;
 144                 break;
 145             case -1:
 146                 std::cerr << "bad option: " << arg << std::endl;
 147                 return 1;
 148             }
 149         }
 150         if (!fname)
 151         {
 152             std::cerr << "No configuration given; use -h for help\n";
 153             return 1;
 154         }
 155
 156         yaz_log(YLOG_LOG, "Metaproxy " VERSION " started");
 157         xmlDocPtr doc = xmlReadFile(fname,
 158                                     NULL,
 159                                     XML_PARSE_XINCLUDE + XML_PARSE_NOBLANKS
 160                                     + XML_PARSE_NSCLEAN + XML_PARSE_NONET );
 161
 162         if (!doc)
 163         {
 164             yaz_log (YLOG_FATAL,"XML parsing failed");
 165             return 1;
 166         }
 167         // and perform Xinclude then
 168         int r = xmlXIncludeProcess(doc);
 169         if (r == -1)
 170         {
 171             yaz_log(YLOG_FATAL, "XInclude processing failed");
 172             return 1;
 173         }
 174         WRBUF base_path = wrbuf_alloc();
 175         const char *last_p = strrchr(fname,
 176 #ifdef WIN32
 177                                      '\\'
 178 #else
 179                                      '/'
 180 #endif
 181             );
 182         if (last_p)
 183             wrbuf_write(base_path, fname, last_p - fname);
 184
 185         mp::FactoryStatic factory;
 186         mp::RouterFleXML *router =
 187             new mp::RouterFleXML(doc, factory, false, wrbuf_cstr(base_path));
 188         wrbuf_destroy(base_path);
 189
 190         yaz_sc_running(s);
 191
 192         yaz_daemon("metaproxy", mode, handler, router, pidfile, uid);
 193     }
 194     catch (std::logic_error &e) {
 195         yaz_log (YLOG_FATAL,"std::logic error: %s" , e.what() );
 196         return 1;
 197     }
 198     catch (std::runtime_error &e) {
 199         yaz_log(YLOG_FATAL, "std::runtime error: %s" , e.what() );
 200         return 1;
 201     }
 202     catch ( ... ) {
 203         yaz_log(YLOG_FATAL, "Unknown Exception");
 204         return 1;
 205     }
 206     return 0;
 207 }
 208
 209 static void sc_stop(yaz_sc_t s)
 210 {
 211     return;
 212 }
 213
 214 int main(int argc, char **argv)
 215 {
 216     int ret;
 217     yaz_sc_t s = yaz_sc_create("metaproxy", "metaproxy");
 218
 219     ret = yaz_sc_program(s, argc, argv, sc_main, sc_stop);
 220
 221     yaz_sc_destroy(&s);
 222     exit(ret);
 223 }
 224
 225
 226
 227 /*
 228  * Local variables:
 229  * c-basic-offset: 4
 230  * c-file-style: "Stroustrup"
 231  * indent-tabs-mode: nil
 232  * End:
 233  * vim: shiftwidth=4 tabstop=8 expandtab
 234  */
 235