75 lines
2.3 KiB
Bash
Executable File
75 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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# Download and merge lists of Gemini hosts from:
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# gemini://geminispace.info/known-hosts
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# gemini://gemini.bortzmeyer.org/software/lupa/lupa-capsules.txt
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set -o errexit # (-e) exit immediately if any command has a non-zero exit status
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set -o nounset # (-u) don't accept undefined variables
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#set -o xtrace # for debugging
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# Go where this script is.
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cd "$(dirname "$0")" || exit
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# If Agunua is installed, use it.
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if command -v agunua >/dev/null; then
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# Using Agunua is more secure, because it does certificate pinning.
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hosts1=$(agunua --binary --maximum-time 20 \
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gemini://geminispace.info/known-hosts 2>/dev/null \
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| grep "gemini://" | cut -d ' ' -f 3)
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if [ -z "$hosts1" ]; then
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>&2 echo "geminispace.info/known-hosts download failed."
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exit 1
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fi
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hosts2=$(agunua --binary --maximum-time 20 \
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gemini://gemini.bortzmeyer.org/software/lupa/lupa-capsules.txt 2>/dev/null)
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if [ -z "$hosts2" ]; then
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>&2 echo "lupa-capsules.txt download failed."
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exit 1
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fi
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else
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# If Agunua is not installed, pipe the request into OpenSSL s_client.
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hosts1=$(printf "gemini://geminispace.info/known-hosts\r\n" \
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| timeout 20 openssl s_client -quiet -connect "geminispace.info:1965" 2>/dev/null \
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| grep "gemini://" | cut -d ' ' -f 3)
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if [ -z "$hosts1" ]; then
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>&2 echo "geminispace.info/known-hosts download failed."
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exit 1
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fi
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hosts2=$(printf "gemini://gemini.bortzmeyer.org/software/lupa/lupa-capsules.txt\r\n" \
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| timeout 20 openssl s_client -quiet -connect "gemini.bortzmeyer.org:1965" 2>/dev/null \
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| tail -n +2)
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if [ -z "$hosts2" ]; then
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>&2 echo "lupa-capsules.txt download failed."
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exit 1
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fi
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fi
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# Concatenate the two files.
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hosts="$hosts1
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$hosts2"
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# Remove empty lines; convert punycode to unicode; sort entries; remove duplicates.
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hosts=$(echo "$hosts" | awk NF | idn --allow-unassigned --idna-to-unicode | sort -fu)
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# Remove hosts which contain neither "." nor ":", such as "localhost".
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hosts=$(echo "$hosts" | grep '\.\|:')
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# Remove explicitly excluded hosts.
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hosts=$(echo "$hosts" | grep -vxEf excluded-hosts)
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if ! echo "$hosts" | grep -qE '\.onion(:.*)?$'; then
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>&2 echo "The .onions are missing!"
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exit 1
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fi
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if [ -z "$hosts" ]; then
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>&2 echo "hosts file downloads failed."
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exit 1
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fi
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# Save to file.
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echo "$hosts" > hosts
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echo OK
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