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#!/bin/sh -e
# A string that denotes the current version of the package:
version=5.2.0-2
# The name of the file that comes from Compaq's web site:
filename=cxml_ev5-5.2.0-2.alpha.rpm
##############################################################################
# This package doesn't pre-depend on cpio, so if it is being preconfigured
# and cpio is not present, exit. This script will be re-ran when the postinst
# runs.
if [ ! -x /bin/cpio ]; then
exit 0
fi
# This script will check to see if a new file needs to be downloaded, and if
# so will prompt the user to do so.
# Use debconf.
. /usr/share/debconf/confmodule || exit
# Establish the preliminaries.
db_version 2.0
#db_capb 'backup'
# Minimalist rpm2cpio in perl.
# Code taken from http://www.eleves.ens.fr:8080/home/espel/rpm2cpio
rpm2cpio() {
perl -e '
undef $/;
$|=1;
$rpm = <>;
($magic, $major, $minor, undef) = unpack("NCC C90", $rpm);
exit "Not an RPM\n" if $magic != 0xedabeedb;
exit "Not a version 3 RPM\n" if $major != 3;
$rpm = substr($rpm, 96);
while ($rpm ne "") {
$rpm =~ s/^\c@*//s;
($magic, undef, $sections, $bytes) = unpack("N4", $rpm);
$smagic = unpack("n", $rpm);
last if $smagic eq 0x1f8b;
die "Error: header not recognized\n" if $magic != 0x8eade801;
$rpm = substr($rpm, 16*(1+$sections) + $bytes);
}
exit "bogus RPM\n" if $rpm eq "";
open(ZCAT, "|gzip -cd") || die "cannot pipe to gzip\n";
print ZCAT $rpm;
close ZCAT;
' $1
}
# Called if we cannot communicate with the user.
abort() {
# They can't see it..
# Try to leave them a message anyway.
db_fset cxml-ev5/needfile seen false
db_input critical cxml-ev5/needfile || true
db_go
exit 1
}
# Go ahead and check if we're a new upstream or not
if [ ! -e "/usr/lib/compaq/cxml-ev5-version" -o \
"`cat /usr/lib/compaq/cxml-ev5-version 2>/dev/null`" != "$version" ]
then
# It seems these need to be reset on upgrade
db_fset cxml-ev5/intro rpmok false
db_fset cxml-ev5/intro seen false
db_fset cxml-ev5/download_dir seen false
# Loopdee loop
db_fget cxml-ev5/intro rpmok
while [ "$RET" != "true" ]
do
# Check for valid CPU type using Thomas Weyergraf's trick
cputype=`grep "cpu model" /proc/cpuinfo | cut -b 14-`
if [[ ! "$cputype" < "EV6" ]]
then
db_input critical cxml-ev5/wrongcpu || abort
db_go
db_get cxml-ev5/wrongcpu
if [ "$RET" != "true" ]
then
# Tell them to remove this and quit
db_input low cxml-ev5/remove || true
db_go
exit 0
fi
fi
# reset all these.. lala
db_fset cxml-ev5/intro seen false
db_fset cxml-ev5/download_dir seen false
db_input critical cxml-ev5/intro || abort
db_go
# Get response (continue y/n)
db_get cxml-ev5/intro
if [ "$RET" != "true" ]
then
# If No, tell them how to do it later and quit.
db_input low cxml-ev5/later || true
db_go
exit 0
fi
# Otherwise continue
db_subst cxml-ev5/download_dir filename "$filename"
db_beginblock
# ask them where to find the rpm, important
db_input critical cxml-ev5/download_dir || abort
# ask them if we can delete the rpm, lower priority
db_fset cxml-ev5/deletefile seen false
db_input medium cxml-ev5/deletefile || false
db_endblock
db_go || exit 1
# Actually check if rpm is ok, and .. deal with it
db_get cxml-ev5/download_dir
if [ -e "$RET/$filename" ] && (rpm2cpio $RET/$filename | cpio --list >/dev/null 2>&1)
then
# happy days.
db_fset cxml-ev5/intro rpmok true
else
# shit happens
# Display a message and then loop.
db_subst cxml-ev5/badfile filename "$RET/$filename"
db_fset cxml-ev5/badfile seen false
db_input critical cxml-ev5/badfile || exit 1
db_fset cxml-ev5/intro rpmok false
fi
done
else
echo "Not reinstalling cxml-ev5 since our upstream version matches"
echo "the one currently installed."
echo "My upstream version is ${version}, I'm looking at "
echo "/usr/lib/compaq/cxml-ev5-version"
exit 0
fi
|
