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  • Committer: Teddy Hogeborn
  • Date: 2014-03-06 02:26:04 UTC
  • mto: (237.7.272 trunk)
  • mto: This revision was merged to the branch mainline in revision 311.
  • Revision ID: teddy@recompile.se-20140306022604-4uc43taz25cflgi3
Bug fix: Free all memory and give better messages when memory is full.

* plugin-runner.c (add_to_char_array): Bug fix: If realloc fails, do
                                       not change old array pointer.
  (add_environment): Bug fix: If realloc fails, do not change old
                     environment pointer.  Also rename "e" to "envdef"
                     for clarity.
  (main): Bug fix: If realloc fails, do not change old pointers.  Also
          wrap "#pragma GCC" with "#ifdef ___GNUC___".
* plugins.d/mandos-client.c (incbuffer): Bug fix: if realloc fails,
                                         free old buffer.
  (run_network_hooks): Moved variables "directory" and "ret" to their
                       innermost possible scope.
  (take_down_interface): Moved variables "sd", "ret_errno", and
                         "ret_setflags" to their innermost possible
                         scope.
  (main): Removed variable "interfaces_hooks_size".  Also, if argz_add
          fails when adding all found interfaces, the error message
          will now be correct.  Also print error message if, after
          having taken up an interface, argz_add fails to add
          interface to list of interfaces to be taken down.
* plugins.d/mandos-client.xml (OPTIONS): Explain better what "none"
                                         means as argument to
                                         "--interface" by negating
                                         sense.
* plugins.d/password-prompt.c (fprintf_plus): Removed (unused).

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Lines of Context:
initramfs-tools-script
 
1
#!/bin/sh -e
 
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# 
 
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# This script will run in the initrd environment at boot and edit
 
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# /conf/conf.d/cryptroot to set /lib/mandos/plugin-runner as keyscript
 
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# when no other keyscript is set, before cryptsetup.
 
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# 
 
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# This script should be installed as
 
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# "/usr/share/initramfs-tools/scripts/init-premount/mandos" which will
 
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# eventually be "/scripts/init-premount/mandos" in the initrd.img
 
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# file.
 
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PREREQ="udev"
 
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prereqs()
 
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{
 
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    echo "$PREREQ"
 
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}
 
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case $1 in
 
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prereqs)
 
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        prereqs
 
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        exit 0
 
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        ;;
 
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esac
 
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. /scripts/functions
 
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for param in `cat /proc/cmdline`; do
 
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    case "$param" in
 
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        ip=*) IPOPTS="${param#ip=}" ;;
 
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        mandos=*)
 
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            # Split option line on commas
 
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            old_ifs="$IFS"
 
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            IFS="$IFS,"
 
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            for mpar in ${param#mandos=}; do
 
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                IFS="$old_ifs"
 
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                case "$mpar" in
 
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                    off) exit 0 ;;
 
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                    connect) connect="" ;;
 
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                    connect:*) connect="${mpar#connect:}" ;;
 
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                    *) log_warning_msg "$0: Bad option ${mpar}" ;;
 
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                esac
 
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            done
 
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            unset mpar
 
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            IFS="$old_ifs"
 
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            unset old_ifs
 
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            ;;
 
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    esac
 
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done
 
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unset param
 
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chmod a=rwxt /tmp
 
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test -r /conf/conf.d/cryptroot
 
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test -w /conf/conf.d
 
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# Get DEVICE from /conf/initramfs.conf and other files
 
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. /conf/initramfs.conf
 
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for conf in /conf/conf.d/*; do
 
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    [ -f ${conf} ] && . ${conf}
 
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done
 
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if [ -e /conf/param.conf ]; then
 
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    . /conf/param.conf
 
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fi
 
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# Override DEVICE from sixth field of ip= kernel option, if passed
 
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case "$IPOPTS" in
 
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    *:*:*:*:*:*)                # At least six fields
 
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        # Remove the first five fields
 
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        device="${IPOPTS#*:*:*:*:*:}"
 
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        # Remove all fields except the first one
 
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        DEVICE="${device%%:*}"
 
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        ;;
 
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esac
 
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# Add device setting (if any) to plugin-runner.conf
 
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if [ "${DEVICE+set}" = set ]; then
 
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    # Did we get the device from an ip= option?
 
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    if [ "${device+set}" = set ]; then
 
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        # Let ip= option override local config; append:
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--interface=${DEVICE}
 
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EOF
 
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    else
 
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        # Prepend device setting so any later options would override:
 
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        sed -i -e \
 
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            '1i--options-for=mandos-client:--interface='"${DEVICE}" \
 
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            /conf/conf.d/mandos/plugin-runner.conf
 
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    fi
 
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fi
 
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unset device
 
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# If we are connecting directly, run "configure_networking" (from
 
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# /scripts/functions); it needs IPOPTS and DEVICE
 
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if [ "${connect+set}" = set ]; then
 
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    configure_networking
 
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    if [ -n "$connect" ]; then
 
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        cat <<-EOF >>/conf/conf.d/mandos/plugin-runner.conf
 
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        --options-for=mandos-client:--connect=${connect}
 
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EOF
 
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    fi
 
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fi
 
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# Do not replace cryptroot file unless we need to.
 
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replace_cryptroot=no
 
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# Our keyscript
 
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mandos=/lib/mandos/plugin-runner
 
111
test -x "$mandos"
 
112
 
 
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# parse /conf/conf.d/cryptroot.  Format:
 
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# target=sda2_crypt,source=/dev/sda2,key=none,keyscript=/foo/bar/baz
 
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exec 3>/conf/conf.d/cryptroot.mandos
 
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while read options; do
 
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    newopts=""
 
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    # Split option line on commas
 
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    old_ifs="$IFS"
 
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    IFS="$IFS,"
 
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    for opt in $options; do
 
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        # Find the keyscript option, if any
 
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        case "$opt" in
 
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            keyscript=*)
 
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                keyscript="${opt#keyscript=}"
 
126
                newopts="$newopts,$opt"
 
127
                ;;
 
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            "") : ;;
 
129
            *)
 
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                newopts="$newopts,$opt"
 
131
                ;;
 
132
        esac
 
133
    done
 
134
    IFS="$old_ifs"
 
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    unset old_ifs
 
136
    # If there was no keyscript option, add one.
 
137
    if [ -z "$keyscript" ]; then
 
138
        replace_cryptroot=yes
 
139
        newopts="$newopts,keyscript=$mandos"
 
140
    fi
 
141
    newopts="${newopts#,}"
 
142
    echo "$newopts" >&3
 
143
done < /conf/conf.d/cryptroot
 
144
exec 3>&-
 
145
 
 
146
# If we need to, replace the old cryptroot file with the new file.
 
147
if [ "$replace_cryptroot" = yes ]; then
 
148
    mv /conf/conf.d/cryptroot /conf/conf.d/cryptroot.mandos-old
 
149
    mv /conf/conf.d/cryptroot.mandos /conf/conf.d/cryptroot
 
150
else
 
151
    rm /conf/conf.d/cryptroot.mandos
 
152
fi