mirror of
https://github.com/Ravinou/borgwarehouse
synced 2024-05-29 03:52:48 +02:00
72 lines
2.6 KiB
Bash
72 lines
2.6 KiB
Bash
#!/usr/bin/env bash
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# Shell created by Raven for BorgWarehouse.
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# This shell takes 3 args: [repositoryName] [new SSH pub key] [quota]
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# This shell updates the SSH key and the quota for a repository.
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# Exit when any command fails
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set -e
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# Load .env if exists
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if [[ -f .env ]]; then
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source .env
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fi
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# Default value if .env not exists
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: "${home:=/home/borgwarehouse}"
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# Check args
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if [ "$1" == "" ] || [ "$2" == "" ] || [ "$3" == "" ]; then
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echo "This shell takes 3 args: [repositoryName] [new SSH pub key] [quota]"
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exit 1
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fi
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# Check if the SSH public key is a valid format
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# This pattern validates SSH public keys for : rsa, ed25519, ed25519-sk
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pattern='(ssh-ed25519 AAAAC3NzaC1lZDI1NTE5|sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29t|ssh-rsa AAAAB3NzaC1yc2)[0-9A-Za-z+/]+[=]{0,3}(\s.*)?'
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if [[ ! "$2" =~ $pattern ]]
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then
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echo "Invalid public SSH KEY format. Provide a key in OpenSSH format (rsa, ed25519, ed25519-sk)"
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exit 2
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fi
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# Check if repositoryName length is 8 char. With createRepo.sh our randoms have a length of 8 characters.
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# If we receive another length, there is necessarily a problem.
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repositoryName=$1
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if [ ${#repositoryName} != 8 ]; then
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echo "Error with the length of the repositoryName."
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exit 3
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fi
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# Check if a line in authorized_keys contains repository_name
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if ! grep -q "command=\".*${repositoryName}.*\",restrict" "$home/.ssh/authorized_keys"; then
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echo "No line containing $repositoryName found in authorized_keys"
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exit 4
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fi
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# Check if the new SSH pub key is already present on a line OTHER than the one corresponding to repositoryName
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found=false
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regex="command=\".*${repositoryName}.*\",restrict"
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while IFS= read -r line; do
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if [[ $line =~ $pattern ]]; then
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# Get the SSH pub key of the line (ignore the comment)
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key1=$(echo ${BASH_REMATCH[0]} | awk '{print $1 " " $2}')
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# Get the SSH pub key of the new SSH pub key (ignore the comment)
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key2=$(echo "$2" | awk '{print $1 " " $2}')
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if [ "$key1" == "$key2" ]; then
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# If the SSH pub key is already present on a line other than the one corresponding to repositoryName
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if [[ ! $line =~ $regex ]]; then
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found=true
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break
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fi
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fi
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fi
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done < "$home/.ssh/authorized_keys"
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if [ "$found" = true ]; then
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echo "The new SSH pub key $2 is already present in authorized_keys on a different line."
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exit 5
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fi
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# Modify authorized_keys for the repositoryName: update the line with the quota and the SSH pub key
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sudo sed -ri "s|(command=\".*${repositoryName}.*--storage-quota ).*G\",restrict .*|\\1$3G\",restrict $2|g" "$home/.ssh/authorized_keys" |