104 lines
2.8 KiB
Bash
104 lines
2.8 KiB
Bash
#!/bin/sh
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# Example attachment decoder script. The attachment comes from stdin, and
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# the script is expected to output UTF-8 data to stdout. (If the output isn't
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# UTF-8, everything except valid UTF-8 sequences are dropped from it.)
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# The attachment decoding is enabled by setting:
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#
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# plugin {
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# fts_decoder = decode2text
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# }
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# service decode2text {
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# executable = script /usr/local/libexec/dovecot/decode2text.sh
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# user = dovecot
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# unix_listener decode2text {
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# mode = 0666
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# }
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# }
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libexec_dir=`dirname $0`
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content_type=$1
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# The second parameter is the format's filename extension, which is used when
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# found from a filename of application/octet-stream. You can also add more
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# extensions by giving more parameters.
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formats='application/pdf pdf
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application/x-pdf pdf
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application/msword doc
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application/mspowerpoint ppt
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application/vnd.ms-powerpoint ppt
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application/ms-excel xls
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application/x-msexcel xls
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application/vnd.ms-excel xls
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application/vnd.openxmlformats-officedocument.wordprocessingml.document docx
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application/vnd.openxmlformats-officedocument.spreadsheetml.sheet xlsx
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application/vnd.openxmlformats-officedocument.presentationml.presentation pptx
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application/vnd.oasis.opendocument.text odt
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application/vnd.oasis.opendocument.spreadsheet ods
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application/vnd.oasis.opendocument.presentation odp
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'
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if [ "$content_type" = "" ]; then
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echo "$formats"
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exit 0
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fi
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fmt=`echo "$formats" | grep -w "^$content_type" | cut -d ' ' -f 2`
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if [ "$fmt" = "" ]; then
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echo "Content-Type: $content_type not supported" >&2
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exit 1
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fi
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# most decoders can't handle stdin directly, so write the attachment
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# to a temp file
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path=`mktemp`
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trap "rm -f $path" 0 1 2 3 14 15
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cat > $path
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xmlunzip() {
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name=$1
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tempdir=`mktemp -d`
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if [ "$tempdir" = "" ]; then
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exit 1
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fi
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trap "rm -rf $path $tempdir" 0 1 2 3 14 15
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cd $tempdir || exit 1
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unzip -q "$path" 2>/dev/null || exit 0
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find . -name "$name" -print0 | xargs -0 cat | /usr/lib/dovecot/xml2text
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}
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wait_timeout() {
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childpid=$!
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trap "kill -9 $childpid; rm -f $path" 1 2 3 14 15
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wait $childpid
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}
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LANG=en_US.UTF-8
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export LANG
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if [ $fmt = "pdf" ]; then
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/usr/bin/pdftotext $path - 2>/dev/null&
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wait_timeout 2>/dev/null
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elif [ $fmt = "doc" ]; then
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(/usr/bin/catdoc $path; true) 2>/dev/null&
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wait_timeout 2>/dev/null
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elif [ $fmt = "ppt" ]; then
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(/usr/bin/catppt $path; true) 2>/dev/null&
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wait_timeout 2>/dev/null
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elif [ $fmt = "xls" ]; then
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(/usr/bin/xls2csv $path; true) 2>/dev/null&
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wait_timeout 2>/dev/null
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elif [ $fmt = "odt" -o $fmt = "ods" -o $fmt = "odp" ]; then
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xmlunzip "content.xml"
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elif [ $fmt = "docx" ]; then
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xmlunzip "document.xml"
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elif [ $fmt = "xlsx" ]; then
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xmlunzip "sharedStrings.xml"
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elif [ $fmt = "pptx" ]; then
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xmlunzip "slide*.xml"
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else
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echo "Buggy decoder script: $fmt not handled" >&2
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exit 1
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fi
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exit 0
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