mirror of
https://github.com/freedomofpress/dangerzone.git
synced 2025-04-28 18:02:38 +02:00
72 lines
2.1 KiB
Bash
Executable file
72 lines
2.1 KiB
Bash
Executable file
#!/bin/bash
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die() {
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echo "$1" >&2
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exit 1
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}
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# Detect the mime type
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MIME_TYPE=$(file -b --mime-type /tmp/input_file)
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echo "Documet MIME type is $MIME_TYPE"
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echo
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# .pdf
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if [ $MIME_TYPE = "application/pdf" ]; then
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ORIGINAL_PDF=/tmp/input_file
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# .docx
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elif [ $MIME_TYPE = "application/vnd.openxmlformats-officedocument.wordprocessingml.document" ]; then
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echo "Converting DOCX to PDF"
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CONVERT_MSGS=$(libreoffice --headless --convert-to pdf:writer_pdf_Export --outdir /tmp /tmp/input_file 2>&1)
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if [ $? -ne 0 ]; then
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die "Page $PAGE conversion failed: $CONVERT_MSGS"
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fi
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ORIGINAL_PDF=/tmp/input_file.pdf
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# .xlsx
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elif [ $MIME_TYPE = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ]; then
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echo "Converting XLSX to PDF"
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CONVERT_MSGS=$(libreoffice --headless --convert-to pdf:calc_pdf_Export --outdir /tmp /tmp/input_file 2>&1)
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if [ $? -ne 0 ]; then
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die "Page $PAGE conversion failed: $CONVERT_MSGS"
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fi
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ORIGINAL_PDF=/tmp/input_file.pdf
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else
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die "The document format is not supported"
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fi
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echo "Separating document into pages"
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CONVERT_MSGS=$(pdfseparate $ORIGINAL_PDF /tmp/page-%d.pdf 2>&1)
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if [ $? -ne 0 ]; then
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die "Separating document into pages failed: $CONVERT_MSGS"
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fi
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IMG_DEPTH=8
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NUM_PAGES=$(find /tmp/page-*.pdf |wc -l)
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echo "Document has $NUM_PAGES pages"
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echo
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for PAGE in $(seq 1 $NUM_PAGES); do
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FILENAME=/tmp/page-$PAGE.pdf
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FILENAME_BASE=/tmp/page-$PAGE
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echo "Converting page $PAGE to pixels"
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# Convert to png
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pdftocairo "$FILENAME" -png -singlefile "$FILENAME_BASE"
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# Get the width and height
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IMG_WIDTH=$(identify -format "%w" "$FILENAME_BASE.png")
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IMG_HEIGHT=$(identify -format "%h" "$FILENAME_BASE.png")
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echo $IMG_WIDTH > $FILENAME_BASE.width
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echo $IMG_HEIGHT > $FILENAME_BASE.height
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# Convert to rgb
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convert "$FILENAME_BASE.png" -depth $IMG_DEPTH rgb:"$FILENAME_BASE.rgb"
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# Delete the png
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rm "$FILENAME_BASE.png"
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# Move files needed for the next step to the mounted volume
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mv "$FILENAME_BASE.rgb" /dangerzone
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mv "$FILENAME_BASE.width" /dangerzone
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mv "$FILENAME_BASE.height" /dangerzone
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done
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