misc/bin/set-selinux-labels.sh

   1 #!/bin/sh
   2 #
   3 # This script changes selinux file labels for cgi scripts.
   4 # It may be useful for Linux installations with SELinux (like CentOS, Fedora,
   5 # RedHat among others) and having it enabled (enforcing mode).
   6 #
   7 # Copyright 2012 Rijksmuseum
   8 #
   9 # This file is part of Koha.
  10 #
  11 # Koha is free software; you can redistribute it and/or modify it
  12 # under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 3 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # Koha is distributed in the hope that it will be useful, but
  17 # WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  23
  24 usage() {
  25     echo "Usage: set-selinux-labels [-h] [-u] [-r] [-s] [-v]"
  26     echo "  -h prints help information."
  27     echo "  -u updates the selinux label for scripts in Koha installation."
  28     echo "    Note: you should be in the root directory of a Koha install."
  29     echo "  -r uses restorecon on scripts to restore default label."
  30     echo "  -s shows all files (incl. scripts), not having default label."
  31     echo "  -v provides (verbose) diagnostics per file (for update/restore)."
  32     echo
  33     echo "The output of -s may be confusing, but it does not reset any labels. It only prints informational messages from restorecon with -n flag."
  34 }
  35
  36 updatelabel() {
  37     #Now set perl scripts to httpd_sys_script_exec_t
  38     #We skip scripts in: misc docs t xt and atomicupdate
  39     find -name "*.pl" -and ! -path "./docs/*" -and ! -path "./misc/*" -and ! -path "./t/*" -and ! -path "./xt/*" -and ! -path "./installer/data/mysql/atomicupdate/*" | xargs chcon $verbose -t httpd_sys_script_exec_t
  40
  41     #Handle exceptions to the rule: scripts without .pl
  42     chcon $verbose -t httpd_sys_script_exec_t opac/unapi
  43     find opac/svc -type f | xargs chcon $verbose -t httpd_sys_script_exec_t
  44     find svc -type f | xargs chcon $verbose -t httpd_sys_script_exec_t
  45 }
  46
  47 restorelabel() {
  48     find -name "*.pl" -and ! -path "./docs/*" -and ! -path "./misc/*" -and ! -path "./t/*" -and ! -path "./xt/*" -and ! -path "./installer/data/mysql/atomicupdate/*" | xargs restorecon $verbose
  49     restorecon $verbose opac/unapi
  50     find opac/svc -type f | xargs restorecon $verbose
  51     find svc -type f | xargs restorecon $verbose
  52 }
  53
  54 showlabel() {
  55     restorecon -r -n -v *
  56 }
  57
  58 #First: check on chcon xargs restorecon
  59 chcon --help >/dev/null 2>&1
  60 retval=$?
  61 if [ $retval -ne 0 ]; then
  62     echo "Chcon command not found. Exiting script now.";
  63     exit;
  64 fi
  65 xargs --help >/dev/null 2>&1
  66 retval=$?
  67 if [ $retval -ne 0 ]; then
  68     echo "Xargs command not found. Exiting script now.";
  69     exit;
  70 fi
  71 restorecon -n >/dev/null 2>&1
  72 retval=$?
  73 if [ $retval -ne 0 ]; then
  74     echo "Restorecon command not found. Exiting script now.";
  75     exit;
  76 fi
  77
  78 #No arguments?
  79 if [ $# -eq 0 ]; then
  80     usage
  81     exit
  82 fi
  83
  84 #Check command line options
  85 restore=0
  86 show=0
  87 update=0
  88 verbose=
  89 while getopts "hrsuv" option; do
  90     case $option in
  91     h)
  92         usage
  93         exit;;
  94     r)
  95         restore=1;;
  96     s)
  97         show=1;;
  98     u)
  99         update=1;;
 100     v)
 101         verbose="-v";;
 102     esac
 103 done
 104
 105 #Check if you are on root level of Koha installation
 106 if [ ! -e kohaversion.pl ]; then
 107     echo "You are not in root directory of Koha install. Cannot continue. Bye.";
 108     exit;
 109 fi
 110
 111 #Cannot update and restore together
 112 if [ $update -eq 1 ] && [ $restore -eq 1 ]; then
 113     echo "You cannot run update and restore at the same time."
 114     exit;
 115 fi
 116
 117 #Now run the job or print usage
 118 if [ $update -eq 1 ]; then updatelabel; exit; fi
 119 if [ $restore -eq 1 ]; then restorelabel; exit; fi
 120 if [ $show -eq 1 ]; then showlabel; exit; fi
 121 usage