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134 lines
3.9 KiB
134 lines
3.9 KiB
--- a/utils/aa-decode
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+++ b/utils/aa-decode
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@@ -1,4 +1,4 @@
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-#!/bin/bash
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+#!/bin/sh
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#
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# Copyright (C) 2009-2010, 2012 Canonical Ltd.
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# Copyright (C) 2012 Christian Boltz
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@@ -16,8 +16,6 @@
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# along with this program; if not, contact Canonical, Ltd.
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#
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-set -e
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-
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help() {
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cat <<EOM
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USAGE: aa-decode [OPTIONS] <encoded string>
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@@ -36,13 +34,15 @@ $ cat /var/log/kern.log | aa-decode
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EOM
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}
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-decode() {
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- if echo "$1" | egrep -q "^[0-9A-Fa-f]+$" ; then
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- python3 -c "import binascii; print(bytes.decode(binascii.unhexlify('$1'), errors='strict'));"
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- else
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- echo ""
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- fi
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+match_re() {
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+ local result=$(echo "$1" | grep -E "$2" )
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+ [ -z "$result" ] && return 1 || return 0
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+}
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+
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+decode() {
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+ $(echo "$1" | egrep -q "^[0-9A-Fa-f]+$"); [ "$?" -eq 0 ] &&
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+ python3 -c "import binascii; print(bytes.decode(binascii.unhexlify('$1'), errors='strict'));" || echo ""
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}
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if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
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@@ -51,47 +51,61 @@ if [ "$1" = "-h" ] || [ "$1" = "--help"
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fi
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# if have an argument, then use it, otherwise process stdin
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-if [ -n "$1" ]; then
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- e="$1"
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- if ! echo "$e" | egrep -q "^[0-9A-Fa-f]+$" ; then
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- echo "String should only contain hex characters (0-9, a-f, A-F)"
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- exit 1
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- fi
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-
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- d=`decode $e`
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- if [ -z "$d" ]; then
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- echo "Could not decode string"
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- exit 1
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- fi
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+[ -n "$1" ] && {
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- echo "Decoded: $d"
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- exit 0
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-fi
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+ e="$1"
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-# For now just look at 'name=...' and 'profile=...',
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-# so validate input against this and output based on it.
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-# TODO: better handle other cases too
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-while read line ; do
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+ $(echo "$e" | egrep -q "^[0-9A-Fa-f]+$"); [ "$?" -ne 0 ] && {
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+ echo "String should only contain hex characters (0-9, a-f, A-F)"
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+ exit 1
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+ }
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- # check if line contains encoded name= or profile=
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- if [[ "$line" =~ \ (name|profile|proctitle)=[0-9a-fA-F] ]]; then
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+ d=$(decode $e)
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- # cut the encoded filename/profile name out of the line and decode it
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- ne=`echo "$line" | sed 's/.* name=\([^ ]*\).*$/\\1/g'`
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- nd="$(decode ${ne/\'/\\\'})"
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+ [ -z "$d" ] && {
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+ echo "Could not decode string"
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+ exit 1
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+ }
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- pe=`echo "$line" | sed 's/.* profile=\([^ ]*\).*$/\\1/g'`
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- pd="$(decode ${pe/\'/\\\'})"
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+ echo "Decoded: $d"
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+ exit 0
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+}
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- pce=`echo "$line" | sed 's/.* proctitle=\([^ ]*\).*$/\\1/g'`
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- pcd="$(decode ${pce/\'/\\\'})"
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+[ -t 0 ] && {
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+ help
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+ exit
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+}
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+
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+while read line ; do
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- # replace encoded name and profile with its decoded counterparts (only if it was encoded)
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- test -n "$nd" && line="${line/name=$ne/name=\"$nd\"}"
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- test -n "$pd" && line="${line/profile=$pe/profile=\"$pd\"}"
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- test -n "$pcd" && line="${line/proctitle=$pce/proctitle=\"$pcd\"}"
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+ # check if line contains encoded name= or profile=
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- fi
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+ matches=0
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+ match_re "$line" "^[[:blank:]](name|profile|proctitle)=[0-9a-fA-F]+"; [ "$?" -eq 0 ] && matches=1 || {
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+ match_re "$line" "^(name|profile|proctitle)=[0-9a-fA-F]+"; [ "$?" -eq 0 ] && matches=1
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+ }
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+
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+ [ "$matches" -eq 0 ] || {
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+
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+ # cut the encoded filename/profile name out of the line and decode it
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+ ne=$(echo "$line" | sed 's/.* name=\([^ ]*\).*$/\\1/g')
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+ [ "$line" = "$ne" ] && ne=$(echo "$line" | sed 's/.*name=\([^ ]*\).*$/\\1/g')
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+ echo var: $ne
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+ nd="$(decode ${ne/\'/\\\'})"
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+
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+ pe=$(echo "$line" | sed 's/.* profile=\([^ ]*\).*$/\\1/g')
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+ [ "$line" = "$pe" ] && pe=$(echo "$line" | sed 's/.*profile=\([^ ]*\).*$/\\1/g')
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+ pd="$(decode ${pe/\'/\\\'})"
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+
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+ pce=$(echo "$line" | sed 's/.* proctitle=\([^ ]*\).*$/\\1/g')
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+ [ "$line" = "$pce" ] && pce=$(echo "$line" | sed 's/.*proctitle=\([^ ]*\).*$/\\1/g')
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+ pcd="$(decode ${pce/\'/\\\'})"
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+
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+ # replace encoded name and profile with its decoded counterparts (only if it was encoded)
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+ test -n "$nd" && line="${line/name=$ne/name=\"$nd\"}"
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+ test -n "$pd" && line="${line/profile=$pe/profile=\"$pd\"}"
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+ test -n "$pcd" && line="${line/proctitle=$pce/proctitle=\"$pcd\"}"
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+ }
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echo "$line"
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