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104 lines
2.2 KiB
Bash
104 lines
2.2 KiB
Bash
#!/usr/bin/env bash
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#
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# Script to setup a new decoder.
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# Written by Victor Julien <victor@inliniac.net>
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#
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set -e
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#set -x
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function Usage {
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echo
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echo "$(basename $0) -- script to provision a decoder. The script"
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echo "makes a copy of the decode-template, sets the name and updates"
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echo " the build system."
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echo
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echo "Call from the 'src' directory, with one argument: the decoder name."
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echo
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echo "E.g. inside 'src': ../scripts/$(basename $0) ipv7"
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echo
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}
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function Done {
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echo
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echo "Decoder $NR has been set up in $FILE_C and $FILE_H and the"
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echo "build system has been updated."
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echo
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echo "The decoder should now compile cleanly. Try running 'make'."
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echo
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echo "Next steps are to edit the files to implement the actual"
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echo "decoding of $NR."
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echo
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}
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# Make sure we are running from the correct directory.
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set_dir() {
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if [ -e ./suricata.c ]; then
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# Do nothing.
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true
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elif [ -e ./src/suricata.c ]; then
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cd src
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else
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echo "error: this does not appear to be a suricata source directory."
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exit 1
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fi
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}
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if [ $# -ne "1" ]; then
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Usage
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echo "ERROR: call with one argument"
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exit 1
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fi
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INPUT=$1
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# lowercase
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LC=${INPUT,,}
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#echo $LC
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# UPPERCASE
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UC=${LC^^}
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#echo $UC
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# Normal
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NR=${LC^}
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#echo $NR
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FILE_C="decode-${LC}.c"
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FILE_H="decode-${LC}.h"
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#echo $FILE_C
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#echo $FILE_H
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set_dir
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if [ ! -e decode-template.c ] || [ ! -e decode-template.h ]; then
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Usage
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echo "ERROR: input files decode-template.c and/or decode-template.h are missing"
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exit 1
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fi
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if [ -e $FILE_C ] || [ -e $FILE_H ]; then
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Usage
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echo "ERROR: file(s) $FILE_C and/or $FILE_H already exist, won't overwrite"
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exit 1
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fi
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cp decode-template.c $FILE_C
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cp decode-template.h $FILE_H
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# search and replaces
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sed -i "s/TEMPLATE/${UC}/g" $FILE_C
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sed -i "s/TEMPLATE/${UC}/g" $FILE_H
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sed -i "s/Template/${NR}/g" $FILE_C
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sed -i "s/Template/${NR}/g" $FILE_H
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sed -i "s/template/${LC}/g" $FILE_C
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sed -i "s/template/${LC}/g" $FILE_H
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sed -i "s/decode-template.c decode-template.h \\\/decode-template.c decode-template.h \\\\\n${FILE_C} ${FILE_H} \\\/g" Makefile.am
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ed -s decode.h > /dev/null <<EOF
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/^int DecodeTEMPLATE
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t-
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s/DecodeTEMPLATE/Decode${UC}/g
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w
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EOF
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Done
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exit 0
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