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32 lines
675 B
Bash
32 lines
675 B
Bash
#!/bin/sh
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# msign PLAINMSG - generate a PGP/MIME signed message
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[ -f "$1" ] || exit 1
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if command -v gpg2 >/dev/null; then
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GPG=gpg2
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else
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GPG=gpg
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fi
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IFS='
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'
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TMPD=$(mktemp -d -t msign.XXXXXX)
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trap "rm -rf '$TMPD'" INT TERM EXIT
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FROM=$(maddr -a -h from "$1" | sed 1q)
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[ "$FROM" ] && key="--default-key=$FROM"
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awk '/^$/,0' "$1" | mmime | sed 's/$/
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/' >"$TMPD"/content
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$GPG $key --armor --detach-sign -o "$TMPD"/signature.asc "$TMPD"/content ||
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exit $?
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{
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sed '/^$/q' "$1"
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printf '#mblaze/raw %s/content\n' "$TMPD"
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printf '#application/pgp-signature %s/signature.asc\n' "$TMPD"
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} |
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mmime -t 'multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"'
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