archive/dragora-installer/dragora-installer

   1 #! /bin/sh -
   2 #
   3 # Dragora installer
   4 #
   5 # Copyright (c) 2019 Matias Fonzo, <selk@dragora.org>.
   6 #
   7 # Licensed under the Apache License, Version 2.0 (the "License");
   8 # you may not use this file except in compliance with the License.
   9 # You may obtain a copy of the License at
  10 #
  11 #    http://www.apache.org/licenses/LICENSE-2.0
  12 #
  13 # Unless required by applicable law or agreed to in writing, software
  14 # distributed under the License is distributed on an "AS IS" BASIS,
  15 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 # See the License for the specific language governing permissions and
  17 # limitations under the License.
  18
  19 # Exit immediately on any error
  20 set -e
  21
  22 PROGRAM="${0##*/}"
  23 TMPDIR="${TMPDIR:-$HOME}"
  24 TMPFILE="${TMPDIR}/${PROGRAM}.${RANDOM-0}$$"
  25 LOCKFILE=/tmp/dragora-installer.lockfile
  26
  27 chkstatus_or_exit()
  28 {
  29     status=$?
  30
  31     # Clean up temporary files
  32     rm -f -- "$TMPFILE" "$LOCKFILE"
  33
  34     # Clean up temporary subdirectory related to the installer
  35     test -d "$SUBTMPDIR" && rm -rf -- "$SUBTMPDIR"
  36
  37     if test $status -ne 0
  38     then
  39         printf "%s\n" "" "Return status = $status" 1>&2
  40         exit 2;
  41     fi
  42
  43     unset status
  44 }
  45
  46 # Sanity checks
  47
  48 if test ! -d "$TMPDIR"
  49 then
  50     echo "${PROGRAM}: \`${TMPDIR}' is not a qualified temporary directory" 1>&2
  51     exit 1;
  52 fi
  53 if test ! -w "$TMPDIR"
  54 then
  55     echo "${PROGRAM}: \`${TMPDIR}' is not a writable temporary directory" 1>&2
  56     exit 1;
  57 fi
  58
  59 trap 'chkstatus_or_exit' EXIT HUP INT QUIT ABRT TERM
  60
  61 umask 077;      # Remove access for all but user.
  62
  63 # Set a lock to allow only one instance of the installer
  64
  65 if ( set -C ; echo ": $PROGRAM - locked" > $LOCKFILE ) 2> /dev/null
  66 then
  67     true
  68 else
  69     if test -e "$LOCKFILE"
  70     then
  71         echo "Only one instance of \`${PROGRAM}' is allowed." 1>&2
  72         exit 1;
  73     else
  74         echo "${PROGRAM}: \`${LOCKFILE}' lock failed." 1>&2
  75         exit 2;
  76     fi
  77 fi
  78
  79 # Create subdirectory to store the files produced by the installer
  80
  81 SUBTMPDIR="${TMPDIR}/.${PROGRAM}"       # Default sets to "${HOME}/.dragora-installer".
  82 mkdir -p -m 700 -- $SUBTMPDIR
  83 export SUBTMPDIR
  84
  85 # Detect and prepare list of Linux partition(s)
  86
  87 if fdisk -l | grep -q -m 1 Linux
  88 then
  89     fdisk -l | grep Linux | LC_COLLATE=C sort > ${SUBTMPDIR}/partitions
  90 else
  91     printf "%s\n" \
  92      "    Linux partitions were not detected."                               \
  93      ""                                                                      \
  94      "A Linux partition is required to continue the installation.  You can"  \
  95      "use utilities such as fdisk(8), cfdisk(8) or parted(8) to create at"   \
  96      "least one Linux partition.  Then run \`${PROGRAM}' again."             \
  97      ""
  98      exit 1;
  99 fi
 100
 101 umask 022;      # Remove write permission for group and other.
 102
 103 dialog --colors \
 104  --backtitle "\ZbDragora 3.0 Installer" \
 105  --hfile "HELP" \
 106  --title "INSTALLER INFORMATION" \
 107  --msgbox \
 108 "Welcome to \Z3${PROGRAM}\Zn.\n\n\
 109 This program prepares Dragora 3.0 to run on your computer.\n\n\
 110     - To set up Dragora now, press \Zb\Z7ENTER\Zn.\n\n\
 111     - To quit, press \Zb\Z7ESC\Zn.\n\n\
 112 Please read the installer's help before proceeding (\Zb\Z7F1\Zn)." 14 63
 113
 114 # Try to detect and mount the hybrid ISO image, there may be a USB memory
 115 # stick already inserted.  If not, the media menu will be displayed.
 116
 117 mkdir -p -- /media/dragora-mount
 118
 119 if ! blkid -t LABEL="Dragora Packages" 2> /dev/null
 120 then
 121     dialog --colors \
 122      --backtitle "\ZbInstallation Medium" \
 123      --title "Pendrive/SDCard/CDROM" \
 124      --msgbox \
 125 "Please insert the media labeled as \"Dragora Packages\" and\n\
 126 press \Zb\Z7ENTER\Zn to continue.  Otherwise a media selection menu\n\
 127 will be displayed." 7 63
 128     if blkid -t LABEL="Dragora Packages" 2> /dev/null
 129     then
 130         mount -t iso9660 LABEL="Dragora Packages" /media/dragora-mount 2> /dev/null
 131         echo "/media/dragora-mount/packages" > ${SUBTMPDIR}/MediumFound
 132     else
 133         . ./parts/MenuMedia
 134     fi
 135 fi
 136
 137 # Clean up possible empty mount-directory
 138 rmdir -- /media/dragora-mount 2> /dev/null || true
 139
 140 # Double-check to see the installation directory
 141 if test ! -f "${SUBTMPDIR}/MediumFound"
 142 then
 143     dialog --colors \
 144      --backtitle "\ZbInstallation Medium" \
 145      --title "MEDIUM NOT FOUND" \
 146      --sleep 7 --infobox \
 147 "\nNo means of installation was found to proceed with\n\
 148 the installation of Dragora.  Please check your\n\
 149 drives and the directory containing the software\n\
 150 packages." 8 55
 151     exit 99;
 152 fi
 153
 154 . ./parts/MakeSwap      # Verify/give format to a swap partition.
 155