116 lines
3.3 KiB
Bash
116 lines
3.3 KiB
Bash
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#!/bin/bash
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set -o errexit
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set -o pipefail
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set -o nounset
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REMOTE_GIT_HOST="git.faercol.me"
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REMOTE_GIT_PORT="2222"
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REMOTE_GIT_USER="git"
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REMOTE_GIT_PUBKEY="[${REMOTE_GIT_HOST}]:${REMOTE_GIT_PORT} ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIMXY7I7Dq9uiBXbqdBX8Q5rdlTNFjGSx0IJxvsxyb9t"
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GITEA_API_HOST="https://git.faercol.me"
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PROVISIONER_DEST="$HOME/.local/provisioner"
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PROVISIONER_REPO="ssh://$REMOTE_GIT_USER@$REMOTE_GIT_HOST:$REMOTE_GIT_PORT/faercol/provisioner.git"
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display_step() {
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echo -e "\e[94m - $1\e[0m"
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}
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display_category() {
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echo -e "\e[34m\e[1m[$1]\e[0m"
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}
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display_success() {
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echo -e -e "\e[32m\e[1m$1\e[0m"
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}
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install_tools() {
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sudo pacman --noconfirm -S git curl
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}
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configure_git_access() {
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display_step "Checking the presence of a SSH keypair"
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expected_files=("id_ed25519" "id_ecdsa" "id_rsa")
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used_key=""
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for expected_file in "${expected_files[@]}"; do
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if [[ -f "$HOME/.ssh/$expected_file" ]]; then
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display_step "Using ssh key $expected_file"
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used_key=$expected_file
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break
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fi
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done
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if [[ -z $used_key ]]; then
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display_step "Creating new ssh keypair id_ed25519"
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ssh-keygen -t ed25519 -q -f "$HOME/.ssh/id_ed25519"
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used_key="id_ed25519"
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fi
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if [[ ! -f "$HOME/.ssh/${used_key}.pub" ]]; then
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display_step "Private key is present, but public key is missing, generating it"
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ssh-keygen -q -f "$HOME/.ssh/$used_key" -y > "$HOME/.ssh/${used_key}.pub"
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fi
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key_val="$(cat "$HOME"/.ssh/"${used_key}".pub)"
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key_name="$USER-$(cat /etc/hostname)"
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key_body="{\"key\":\"$key_val\",\"read_only\":false,\"title\":\"$key_name\"}"
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display_step "Posting public key to gitea API"
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curl -f -S -o /dev/null -X 'POST' \
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"${GITEA_API_HOST}/api/v1/user/keys" \
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-H 'accept: application/json' \
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-H "Authorization: token ${GITEA_API_TOKEN}" \
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-H 'Content-Type: application/json' \
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-d "$key_body"
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}
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check_git_access() {
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display_step "Creating correct ssh dir if not present"
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install -m 0700 -d "${HOME}/.ssh/"
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touch "${HOME}/.ssh/known_hosts"
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display_step "Checking remote git public key"
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if grep -q "$REMOTE_GIT_PUBKEY" "${HOME}/.ssh/known_hosts"; then
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display_step "git host already known, continuing"
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else
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display_step "Adding expected remote git server pubkey"
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echo "$REMOTE_GIT_PUBKEY" >> "${HOME}/.ssh/known_hosts"
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fi
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display_step "Checking SSH private key"
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set +o errexit
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ssh -o BatchMode=yes -p "$REMOTE_GIT_PORT" "${REMOTE_GIT_USER}@${REMOTE_GIT_HOST}" > /dev/null 2>&1
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ssh_returncode=$?
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set -o errexit
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if [ $ssh_returncode -eq 0 ]; then
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display_step "Access is allowed to git server, continuing"
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else
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display_category "Configuring access to the remote git server"
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configure_git_access
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fi
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}
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download_provisioner() {
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display_step "Cloning the provisioner to ${PROVISIONER_DEST}"
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git clone "$PROVISIONER_REPO" "$PROVISIONER_DEST"
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}
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main() {
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display_category "Installing necessary tools"
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install_tools
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display_category "Checking access to the remote git server"
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check_git_access
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display_category "Downloading and installing the remote installer"
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download_provisioner
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display_success "Remote installer ready and configured, passing control to it"
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exec "$PROVISIONER_DEST/provisioner.sh"
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}
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main
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