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78 lines
2.6 KiB
78 lines
2.6 KiB
#!/usr/bin/env sh
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# Nearly Free Speech DNS API (https://www.nearlyfreespeech.net)
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# Author: Travis Neely (https://github.com/Travisivart)
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# Created: 2022-04-19
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# Expected environment variables as such:
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#
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# export NFS_ACCOUNT="your_nearly_free_speech_account"
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# export NFS_API_KEY="your_nearly_free_speech_api_key"
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#
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# Usage: dns_nfs_add _acme-challenge.domain.com "KjiayTfXPHmnHmOdevsOtJyzsU9AHw2T6R0lNVCl_oi"
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dns_nfs_add() {
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FULLDOMAIN=$1
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ROOTDOMAIN=$(echo "$FULLDOMAIN" | awk -F '.' '{print $(NF-1)"."$NF}')
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SUBDOMAIN=$(echo "$FULLDOMAIN" | sed 's/.'"$ROOTDOMAIN"'//g')
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if [ "$SUBDOMAIN" = "$FULLDOMAIN" ]; then
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unset SUBDOMAIN
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fi
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_nfs_rest "/dns/$ROOTDOMAIN/addRR" "name=$SUBDOMAIN" 'type=TXT' "data=$2"
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}
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# Usage: dns_nfs_rm domain.com "KjiayTfXPHmnHmOdevsOtJyzsU9AHw2T6R0lNVCl_oi"
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dns_nfs_rm() {
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FULLDOMAIN=$1
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ROOTDOMAIN=$(echo "$FULLDOMAIN" | awk -F '.' '{print $(NF-1)"."$NF}')
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SUBDOMAIN=$(echo "$FULLDOMAIN" | sed 's/.'"$ROOTDOMAIN"'//g')
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if [ "$SUBDOMAIN" = "$FULLDOMAIN" ]; then
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unset SUBDOMAIN
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fi
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_nfs_rest "/dns/$ROOTDOMAIN/removeRR" "name=$SUBDOMAIN" 'type=TXT' "data=$2"
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}
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#################### Private functions below ##################################
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# Usage add: _nfs_rest "/dns/domain.com/addRR" "name=" 'type=TXT' "data=KjiayTfXPHmnHmOdevsOtJyzsU9AHw2T6R0lNVCl_oi"
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# remove: _nfs_rest "/dns/domain.com/removeRR" "name=www" 'type=TXT' "data=KjiayTfXPHmnHmOdevsOtJyzsU9AHw2T6R0lNVCl_oi"
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_nfs_rest() {
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# Make sure NFS_ACCOUNT is set else exit
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if [ -z "$NFS_ACCOUNT" ]; then
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echo "NFS_ACCOUNT is not set, run 'export NFS_ACCOUNT=\"your_nearly_free_speech_account\" and rerun."
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exit 1
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fi
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# Make sure NFS_API_KEY is set else exit
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if [ -z "$NFS_API_KEY" ]; then
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echo "NFS_API_KEY is not set, run 'export NFS_API_KEY=\"your_nearly_free_speech_api_key\" and rerun."
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exit 1
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fi
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TIMESTAMP=$(date +%s)
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SALT=$(tr -dc 'a-zA-Z0-9' </dev/urandom | head -c 16)
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REQUEST_URI="$1"
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if [ "$#" -gt "1" ]; then
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PARAMETERS="$2"
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fi
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COUNT=3
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while test $COUNT -le $#; do
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eval "PARAMETER=\$$COUNT"
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# shellcheck disable=SC2153
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PARAMETERS="$PARAMETERS&$PARAMETER"
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COUNT=$((COUNT + 1))
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done
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BODY=$PARAMETERS
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BODY_HASH=$(printf "%s" "$BODY" | sha1sum | awk '{print $1}')
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HASH_STRING=$(printf "%s" "$NFS_ACCOUNT;$TIMESTAMP;$SALT;$NFS_API_KEY;$REQUEST_URI;$BODY_HASH")
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HASH=$(printf "%s" "$HASH_STRING" | sha1sum | awk '{print $1}')
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printf "%s" "$(curl -s -o - -k -X POST -H "X-NFSN-Authentication: $NFS_ACCOUNT;$TIMESTAMP;$SALT;$HASH" -d "$BODY" "https://api.nearlyfreespeech.net$REQUEST_URI")"
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}
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