src/startup-chkconfig.c

   1 /* $Id$
   2  * UDP Gateway utility startup scripts support using chkconfig(8)
   3  * Copyright (C) 2004 Jan Kratochvil <project-udpgate@jankratochvil.net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; exactly version 2 of June 1991 is required
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19
  20 #include "config.h"
  21
  22 #include <glib/gmessages.h>
  23 #include <stdlib.h>
  24 #include <sys/types.h>
  25 #include <sys/wait.h>
  26 #include <unistd.h>
  27 #include <glib/gmem.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <sys/stat.h>
  31
  32 #include "startup-chkconfig.h"  /* self */
  33
  34 #ifdef ENABLE_BUNDLE
  35 #include "bundle-util.h"
  36 #endif
  37
  38
  39 /* Config: */
  40 /* Do not: /etc/rc.d/init.d/...
  41  * to comply with http://www.linuxbase.org/spec/booksets/LSB-Core/LSB-Core.html#INITSRCINSTRM
  42  */
  43 #define INIT_D_PATHNAME G_STRINGIFY(SYSCONFDIR) "/init.d/" PACKAGE
  44
  45 #define COMMAND_INSTALL_INIT_D "/usr/lib/lsb/install_initd"
  46 #define COMMAND_REMOVE_INIT_D  "/usr/lib/lsb/remove_initd"
  47
  48
  49 #define STATUS_0_1(status) ( \
  50                 !(WIFEXITED((status)) && (WEXITSTATUS((status))==0 || WEXITSTATUS((status))==1) \
  51                                                 && !WIFSIGNALED((status)) \
  52                                                 && !WIFSTOPPED((status))) \
  53                                 ? -1 : WEXITSTATUS((status)))
  54
  55 static gboolean chkexec(const gchar *binary)
  56 {
  57 struct stat statbuf;
  58
  59         g_return_val_if_fail(binary!=NULL,FALSE);
  60
  61         if (stat(COMMAND_INSTALL_INIT_D,&statbuf))
  62                 return FALSE;
  63         if ((statbuf.st_mode&(S_IFMT|0111))!=(S_IFREG|0111))
  64                 return FALSE;
  65
  66         return TRUE;
  67 }
  68
  69
  70 gboolean startup_chkconfig_init(void)
  71 {
  72 static gboolean r,r_set=FALSE;
  73
  74         if (!r_set) {
  75 int status;
  76 const gchar *command="chkconfig " PACKAGE;
  77
  78                 /* LSB compliant 'query' is not standardized. */
  79                 if (chkexec(COMMAND_INSTALL_INIT_D) && chkexec(COMMAND_REMOVE_INIT_D))
  80                         r=TRUE;
  81                 else {
  82                         status=system(command);
  83                         if (STATUS_0_1(status)<0) {
  84                                 g_warning(_("Error checking validity of chkconfig(8) setup; automatic startup disabled; failed command: %s"),command);
  85                                 r=FALSE;
  86                                 }
  87                         else
  88                                 r=TRUE;
  89                         }
  90                 r_set=TRUE;
  91                 }
  92         return r;
  93 }
  94
  95 gboolean startup_chkconfig_query(gboolean *is_on)
  96 {
  97 int status,status_0_1;
  98 const gchar *command="chkconfig " PACKAGE;
  99
 100         g_return_val_if_fail(is_on!=NULL,FALSE);
 101
 102         if (!startup_chkconfig_init())
 103                 return FALSE;
 104
 105         /* LSB compliant 'query' is not standardized. */
 106         status=system(command);
 107         status_0_1=STATUS_0_1(status);
 108         if (status_0_1<0) {
 109                 g_warning(_("Error checking registrance of this program automatic startup by: %s"),command);
 110                 return FALSE;
 111                 }
 112         *is_on=(status_0_1==0);
 113         return TRUE;
 114 }
 115
 116 gboolean startup_chkconfig_on(void)
 117 {
 118 int status;
 119 const gchar *command="chkconfig --add";
 120
 121         if (!startup_chkconfig_init())
 122                 return FALSE;
 123
 124 #ifdef ENABLE_BUNDLE
 125         if (!bundle_util_file_write(
 126                         INIT_D_PATHNAME,        /* pathname */
 127                         PACKAGE ".init",        /* basename */
 128                         0755,   /* pathname_mode */
 129                         TRUE))  /* pathname_backup */
 130                 return FALSE;
 131 #endif /* ENABLE_BUNDLE */
 132
 133         if (chkexec(COMMAND_INSTALL_INIT_D))
 134                 command=COMMAND_INSTALL_INIT_D;
 135         command=udpgate_printf_alloca("%s %s",command,PACKAGE);
 136         status=system(command);
 137
 138         if (0!=STATUS_0_1(status)) {
 139                 g_warning(_("Error registering automatic program startup by: %s"),command);
 140                 return FALSE;
 141                 }
 142         return TRUE;
 143 }
 144
 145 gboolean startup_chkconfig_off(void)
 146 {
 147 const gchar *command="chkconfig --del";
 148 int status;
 149
 150         if (!startup_chkconfig_init())
 151                 return FALSE;
 152
 153         if (chkexec(COMMAND_REMOVE_INIT_D))
 154                 command=COMMAND_REMOVE_INIT_D;
 155         command=udpgate_printf_alloca("%s %s",command,PACKAGE);
 156         status=system(command);
 157         if (0!=STATUS_0_1(status)) {
 158                 g_warning(_("Error removing program's system startup registrance by: %s"),command);
 159                 return FALSE;
 160                 }
 161 #ifdef ENABLE_BUNDLE
 162         if (!bundle_util_file_remove(INIT_D_PATHNAME,PACKAGE ".init"))
 163                 return FALSE;
 164 #endif /* ENABLE_BUNDLE */
 165         return TRUE;
 166 }