debian/postinst

   1 #!/bin/sh
   2 # postinst script for spamassassin-cn
   3 #
   4 # see: dh_installdeb(1)
   5
   6 set -e
   7
   8 # summary of how this script can be called:
   9 #        * <postinst> `configure' <most-recently-configured-version>
  10 #        * <old-postinst> `abort-upgrade' <new version>
  11 #        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
  12 #          <new-version>
  13 #        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
  14 #          <failed-install-package> <version> `removing'
  15 #          <conflicting-package> <version>
  16 # for details, see http://www.debian.org/doc/debian-policy/ or
  17 # the debian-policy package
  18 #
  19
  20 case "$1" in
  21     configure|reconfigure)
  22       # continue below
  23     ;;
  24
  25     *)
  26         exit 0
  27     ;;
  28 esac
  29
  30 # import CN-functions
  31 . /usr/share/carnet-tools/functions.sh
  32
  33 ################################################################################
  34
  35 # starting up backup
  36 echo -n "CN: Backed up to /var/backups:"
  37
  38 # backup lilo.conf
  39 if [ -e /etc/lilo.conf ]; then
  40   cp_backup_conffile /etc/lilo.conf
  41   echo -n " lilo.conf"
  42 fi
  43
  44 # backup old kernel params
  45 if [ -e /etc/sysctl.conf ]; then
  46   cp_backup_conffile /etc/sysctl.conf
  47   echo -n " sysctl.conf"
  48 fi
  49
  50 # backup old kernel params
  51 if [ -e /etc/kernel-img.conf ]; then
  52   cp_backup_conffile /etc/kernel-img.conf
  53   echo -n " kernel-img.conf"
  54 fi
  55
  56 # finished
  57 echo "."
  58
  59 ################################################################################
  60
  61 # intro msg
  62 echo -n "CN: Configuring system (this will take a while):"
  63
  64 # generate kernel-img.conf
  65 if [ ! -e /etc/kernel-img.conf ]; then
  66     touch /etc/kernel-img.conf
  67 fi
  68
  69 # update postinst_hook for grub
  70 if grep -q postinst_hook /etc/kernel-img.conf; then
  71     cp_check_and_sed '^postinst_hook' \
  72       's;^postinst_hook[[:blank:]]*=.*;postinst_hook = /usr/sbin/update-grub;g' \
  73           /etc/kernel-img.conf || true
  74 else
  75     echo "postinst_hook = /usr/sbin/update-grub" >> /etc/kernel-img.conf
  76 fi
  77
  78 # update postrm_hook for grub
  79 if grep -q postrm_hook /etc/kernel-img.conf; then
  80     cp_check_and_sed '^postrm_hook' \
  81       's;^postrm_hook[[:blank:]]*=.*;postrm_hook = /usr/sbin/update-grub;g' \
  82           /etc/kernel-img.conf || true
  83 else
  84     echo "postrm_hook = /usr/sbin/update-grub" >> /etc/kernel-img.conf
  85 fi
  86
  87 # enable initrd
  88 if grep -q do_initrd /etc/kernel-img.conf; then
  89     cp_check_and_sed '^do_initrd' \
  90       's/^do_initrd[[:blank:]]*=.*/do_initrd = yes/g' \
  91           /etc/kernel-img.conf || true
  92 else
  93     echo "do_initrd = yes" >> /etc/kernel-img.conf
  94 fi
  95
  96 echo -n " kernel-img.conf"
  97
  98 # generate initial grub loaders
  99 if [ ! -d /boot/grub ]; then
 100     mkdir -p /boot/grub
 101     if [ -d /usr/lib/grub/i386-pc ]; then
 102         cp -a /usr/lib/grub/i386-pc/* /boot/grub
 103     fi
 104 fi
 105
 106 # create/update grub configuration
 107 if [ -e /boot/grub/menu.lst ]; then
 108     # is there uncompatibile grub conf present?
 109     if ! grep -q 'AUTOMAGIC KERNELS LIST' /boot/grub/menu.lst; then
 110         mv -f /boot/grub/menu.lst /boot/grub/menu.lst.old
 111     fi
 112 fi
 113 if [ ! -e /boot/grub/menu.lst ]; then
 114     yes | /usr/sbin/update-grub >/dev/null 2>&1 || true
 115 else
 116     /usr/sbin/update-grub >/dev/null 2>&1 || true
 117 fi
 118
 119 if ! grub-install --no-floppy '(hd0)' >/dev/null 2>&1; then
 120     echo "."
 121     echo "CN: FATAL ERROR running grub-install!"
 122     echo "CN: Do not reboot your server and report this to OTRS immediately!"
 123     exit 1
 124 fi
 125 echo -n " grub"
 126
 127 # disable lilo
 128 if [ -e /etc/lilo.conf ]; then
 129     mv -f /etc/lilo.conf /etc/lilo.conf.old
 130 fi
 131 echo -n " lilo"
 132
 133 # mdadm
 134 if [ -x /usr/share/mdadm/mkconf ]; then
 135     if [ ! -e /etc/mdadm/mdadm.conf ]; then
 136         touch /etc/mdadm/mdadm.conf
 137     fi
 138
 139     /usr/share/mdadm/mkconf > /etc/mdadm/mdadm.conf.$$
 140     if ! cmp -s /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf; then
 141         mv /etc/mdadm/mdadm.conf.$$ /etc/mdadm/mdadm.conf
 142     fi
 143     rm -f /etc/mdadm/mdadm.conf.$$ /etc/initramfs-tools/hooks/md \
 144         /var/lib/mdadm/CONF-UNCHECKED
 145     echo -n " mdadm"
 146 fi
 147
 148 # update initramfs accordingly
 149 update-initramfs -u -k all >/dev/null 2>&1 || true
 150 echo -n " initramfs"
 151
 152 # finished
 153 echo "."
 154
 155 ################################################################################
 156
 157 # rest of configuration...
 158 echo -n "CN: Modifying the neccessary system files:"
 159
 160 # remove group 99
 161 if getent group proc >/dev/null 2>&1; then
 162     groupdel proc >/dev/null 2>&1
 163 fi
 164 echo -n " proc"
 165
 166 # remove oidentd from oident group
 167 if getent group oident >/dev/null 2>&1; then
 168     # sarge default
 169     cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup' \
 170       's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*nogroup/OIDENT_GROUP=oident/g' \
 171           /etc/default/oidentd || true
 172
 173     # old kernel-2.6-cn default
 174     cp_check_and_sed '^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc' \
 175       's/^OIDENT_GROUP[[:blank:]]*=[[:blank:]]*proc/OIDENT_GROUP=oident/g' \
 176           /etc/default/oidentd || true
 177
 178     echo -n " oidentd"
 179 fi
 180
 181 # default kernel parameters
 182 rm -f /etc/sysctl.conf.$$
 183 cat > /etc/sysctl.conf.$$ <<EOF
 184 kernel.exec-shield=3
 185 kernel.maps_protect=1
 186 net.core.rmem_default=1048576
 187 net.core.wmem_default=1048576
 188 net.ipv4.conf.all.accept_redirects=0
 189 net.ipv4.conf.all.accept_source_route=0
 190 net.ipv4.conf.all.log_martians=1
 191 net.ipv4.conf.all.rp_filter=1
 192 net.ipv4.conf.all.secure_redirects=1
 193 net.ipv4.conf.all.send_redirects=0
 194 net.ipv4.icmp_echo_ignore_broadcasts=1
 195 net.ipv4.icmp_ignore_bogus_error_responses=1
 196 net.ipv4.ip_forward=0
 197 net.ipv4.ip_local_port_range=10000 65000
 198 net.ipv4.tcp_congestion_control=cubic
 199 net.ipv4.tcp_ecn=0
 200 net.ipv4.tcp_max_syn_backlog=8192
 201 net.ipv4.tcp_retries1=2
 202 net.ipv4.tcp_rfc1337=1
 203 net.ipv4.tcp_syncookies=1
 204 vm.mmap_min_addr=65536
 205 EOF
 206
 207 # old kernel params
 208 if [ -e /etc/sysctl.conf ]; then
 209   #cat /etc/sysctl.conf >> /etc/sysctl.conf.$$
 210   #ignore some of 2.4 stuff
 211   egrep -v 'net\.core\.(r|w)mem_max|net\.ipv4\.tcp_(r|w)mem|vm\.bdflush|net\.ipv4\.ip_local_port_range|kernel\.rtsig-max|net\.ipv4\.tcp_syncookies' \
 212     /etc/sysctl.conf >> /etc/sysctl.conf.$$
 213 fi
 214
 215 # add sysctl.conf Debian headers
 216 rm -f /etc/sysctl.conf-head
 217 cat > /etc/sysctl.conf-head <<EOF
 218 #
 219 # /etc/sysctl.conf - Configuration file for setting system variables
 220 # See sysctl.conf (5) for information.
 221 #
 222 EOF
 223
 224 # merge old and new in one conf, primarily respecting old
 225 script='
 226 my %confhash = ();
 227 my ($key, $value);
 228 while (<>)
 229 {
 230   chomp();
 231   if (/^\s*(\S+)\s*=\s*(.+)\s*$/o)
 232   {
 233     my ($key, $value) = ($1, $2);
 234     $key =~ s/\//./go;
 235     $confhash{$key} = $value;
 236   }
 237 }
 238 for (sort { $a cmp $b } keys %confhash)
 239 {
 240   print $_, "=", $confhash{$_}, "\n";
 241 }
 242 '
 243 rm -f /etc/sysctl.conf-new
 244 perl -e "$script" < /etc/sysctl.conf.$$ > /etc/sysctl.conf-new
 245 cat /etc/sysctl.conf-head /etc/sysctl.conf-new > /etc/sysctl.conf.$$
 246 rm -f /etc/sysctl.conf-head /etc/sysctl.conf-new
 247
 248 # finished with merging, move into sysctl.conf
 249 cp_mv /etc/sysctl.conf.$$ /etc/sysctl.conf
 250 echo -n " sysctl.conf"
 251
 252 # finished with basic kernel-2.6-cn stuff
 253 echo "."
 254
 255 ################################################################################
 256
 257 # intro
 258 echo -n "CN: Setting up PAM configurations:"
 259
 260 # update pam_limits accordingly
 261 if [ -e /etc/security/limits.conf ]; then
 262   rm -f /etc/security/limits.conf.$$
 263   cp /etc/security/limits.conf /etc/security/limits.conf.$$
 264   cp-update kernel-2.6-cn /etc/security/limits.conf.$$ <<EOF
 265 *               soft    core            0
 266 *               hard    nofile          4096
 267 *               soft    nofile          4096
 268 EOF
 269   cp_mv /etc/security/limits.conf.$$ /etc/security/limits.conf
 270   echo -n " limits"
 271 fi
 272
 273 # check pam.d/login
 274 if [ -e /etc/pam.d/login ]; then
 275   cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
 276     's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
 277     /etc/pam.d/login || true
 278   echo -n " login"
 279 fi
 280
 281 # check pam.d/ssh
 282 if [ -e /etc/pam.d/ssh ]; then
 283   cp_check_and_sed '^#.*session.+required.+pam_limits.so' \
 284     's/^#.*session.+required.+pam_limits.so/session required pam_limits.so/' \
 285     /etc/pam.d/ssh || true
 286   echo -n " ssh"
 287 fi
 288
 289 # finished with PAM
 290 echo "."
 291
 292 ################################################################################
 293
 294 # remove obsolete links
 295 rm -f /boot/vmlinuz /boot/vmlinuz.old /boot/vmlinuz.old2 \
 296   /boot/vmlinuz.plain /vmlinuz /vmlinuz.old /boot/vmlinuz.plain
 297 echo "CN: Removed old symlinks in / and /boot."
 298
 299 ################################################################################
 300
 301 # fix old kernel-2.4-cn postrm
 302 if [ -e /var/lib/dpkg/info/kernel-2.4-cn.postrm ]; then
 303     echo "CN: Fixed old kernel-2.4-cn postrm."
 304     cat > /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ <<EOF
 305 #!/bin/sh
 306
 307 set -e
 308
 309 # be sure, be safe
 310 if [ "$1" != "remove" ]; then
 311   exit 0
 312 fi
 313
 314 # import CN-functions
 315 . /usr/share/carnet-tools/functions.sh
 316
 317 # remove us from limits.conf
 318 cp-update -r kernel-2.4-cn /etc/security/limits.conf
 319
 320 # remove us from modules
 321 cp-update -r kernel-2.4-cn /etc/modules
 322 EOF
 323     if ! cmp -s /var/lib/dpkg/info/kernel-2.4-cn.postrm \
 324         /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$; then
 325         mv /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$ \
 326             /var/lib/dpkg/info/kernel-2.4-cn.postrm
 327         chmod +x /var/lib/dpkg/info/kernel-2.4-cn.postrm
 328     fi
 329     rm -f /var/lib/dpkg/info/kernel-2.4-cn.postrm.$$
 330 fi
 331
 332 ################################################################################
 333
 334 # fix old kernel-cn postrm
 335 if [ -e /var/lib/dpkg/info/kernel-cn.postrm ]; then
 336     echo "CN: Fixed old kernel-cn postrm."
 337     cat > /var/lib/dpkg/info/kernel-cn.postrm.$$ <<EOF
 338 #!/bin/sh
 339
 340 set -e
 341
 342 # be sure, be safe
 343 if [ "$1" != "remove" ]; then
 344   exit 0
 345 fi
 346
 347 # import CN-functions
 348 . /usr/share/carnet-tools/functions.sh
 349
 350 # remove us from limits.conf
 351 cp-update -r kernel-cn /etc/security/limits.conf
 352
 353 # remove us from modules
 354 cp-update -r kernel-cn /etc/modules
 355 EOF
 356     if ! cmp -s /var/lib/dpkg/info/kernel-cn.postrm \
 357         /var/lib/dpkg/info/kernel-cn.postrm.$$; then
 358         mv /var/lib/dpkg/info/kernel-cn.postrm.$$ \
 359             /var/lib/dpkg/info/kernel-cn.postrm
 360         chmod +x /var/lib/dpkg/info/kernel-cn.postrm
 361     fi
 362     rm -f /var/lib/dpkg/info/kernel-cn.postrm.$$
 363 fi
 364
 365 ################################################################################
 366
 367 # dh_installdeb will replace this with shell code automatically
 368 # generated by other debhelper scripts.
 369
 370 #DEBHELPER#
 371
 372 exit 0