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| # | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you under the Apache License, Version 2.0 (the | ||
| # "License"); you may not use this file except in compliance | ||
| # with the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, | ||
| # software distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| # KIND, either express or implied. See the License for the | ||
| # specific language governing permissions and limitations | ||
| # under the License. | ||
| # | ||
|
|
||
| name: ssh access | ||
| description: Sets up SSH access to build VM with upterm | ||
| inputs: | ||
| action: | ||
| description: | | ||
| Action to perform: options are "start" and "wait" | ||
| "start" will install, configure and start upterm. | ||
| "wait" will wait until a connection is established to upterm and will continue to wait until the session is closed. | ||
| required: false | ||
| default: 'start' | ||
| limit-access-to-actor: | ||
| description: 'If only the public SSH keys of the user triggering the workflow should be authorized' | ||
| required: false | ||
| default: 'false' | ||
| limit-access-to-users: | ||
| description: 'If only the public SSH keys of the listed GitHub users should be authorized. Comma separate list of GitHub user names.' | ||
| required: false | ||
| default: '' | ||
| secure-access: | ||
| description: | | ||
| Set to false for allowing public access when limit-access-to-actor and limit-access-to-users are unset. | ||
| required: false | ||
| default: 'true' | ||
| timeout: | ||
| description: 'When action=wait, the timeout in seconds to wait for the user to connect' | ||
| required: false | ||
| default: '300' | ||
| runs: | ||
| using: composite | ||
| steps: | ||
| - run: | | ||
| if [[ "${{ inputs.action }}" == "start" ]]; then | ||
| echo "::group::Installing upterm & tmux" | ||
| if [[ "$OSTYPE" == "linux-gnu"* ]]; then | ||
| # install upterm | ||
| curl -sL https://github.com/owenthereal/upterm/releases/download/v0.7.6/upterm_linux_amd64.tar.gz | tar zxvf - -C /tmp upterm && sudo install /tmp/upterm /usr/local/bin/ && rm -rf /tmp/upterm | ||
| # install tmux if it's not present | ||
| if ! command -v tmux &>/dev/null; then | ||
| sudo apt-get -y install tmux | ||
| fi | ||
| elif [[ "$OSTYPE" == "darwin"* ]]; then | ||
| brew install owenthereal/upterm/upterm | ||
| # install tmux if it's not present | ||
| if ! command -v tmux &>/dev/null; then | ||
| brew install tmux | ||
| fi | ||
| else | ||
| echo "Unsupported $OSTYPE" | ||
| exit 0 | ||
| fi | ||
| echo '::endgroup::' | ||
| echo "::group::Configuring ssh and ssh keys" | ||
| # generate ssh key | ||
| mkdir -p ~/.ssh | ||
| chmod 0700 ~/.ssh | ||
| if [ ! -f ~/.ssh/id_rsa ]; then | ||
| ssh-keygen -q -t rsa -N "" -f ~/.ssh/id_rsa | ||
| fi | ||
| if [ ! -f ~/.ssh/id_ed25519 ]; then | ||
| ssh-keygen -q -t ed25519 -N "" -f ~/.ssh/id_ed25519 | ||
| fi | ||
| # configure ssh | ||
| echo -e "Host *\nStrictHostKeyChecking no\nCheckHostIP no\nTCPKeepAlive yes\nServerAliveInterval 30\nServerAliveCountMax 180\nVerifyHostKeyDNS yes\nUpdateHostKeys yes\n" > ~/.ssh/config | ||
| # Auto-generate ~/.ssh/known_hosts by attempting connection to uptermd.upterm.dev | ||
| ssh -i ~/.ssh/id_ed25519 uptermd.upterm.dev || true | ||
| # @cert-authority entry is a mandatory entry when connecting to upterm. generate the entry based on the known_hosts entry key | ||
| cat <(cat ~/.ssh/known_hosts | awk '{ print "@cert-authority * " $2 " " $3 }') >> ~/.ssh/known_hosts | ||
| authorizedKeysParameter="" | ||
| authorizedKeysFile=${HOME}/.ssh/authorized_keys | ||
| if [[ "${{ inputs.secure-access }}" != "false" ]]; then | ||
| ssh-keygen -q -t ed25519 -N "$(echo $RANDOM | md5sum | awk '{ print $1 }')" -C "Prevent public access" -f /tmp/dummykey$$ | ||
| cat /tmp/dummykey$$.pub >> $authorizedKeysFile | ||
| rm /tmp/dummykey$$ /tmp/dummykey$$.pub | ||
| fi | ||
| limit_access_to_actor="${{ inputs.limit-access-to-actor }}" | ||
| if [[ "${limit_access_to_actor}" == "true" ]]; then | ||
| echo "Adding ${GITHUB_ACTOR} to allowed users (identified by ssh key registered in GitHub)" | ||
| curl -s https://github.com/${GITHUB_ACTOR}.keys >> $authorizedKeysFile | ||
| fi | ||
| limit_access_to_users="${{ inputs.limit-access-to-users }}" | ||
| for github_user in ${limit_access_to_users//,/ }; do | ||
| if [[ -n "${github_user}" ]]; then | ||
| echo "Adding ${github_user} to allowed users (identified by ssh key registered in GitHub)" | ||
| curl -s https://github.com/${github_user}.keys >> $authorizedKeysFile | ||
| fi | ||
| done | ||
| if [ -f $authorizedKeysFile ]; then | ||
| chmod 0600 $authorizedKeysFile | ||
| authorizedKeysParameter="-a $authorizedKeysFile" | ||
| echo -e "Using $authorizedKeysFile\nContent:\n---------------------------" | ||
| cat $authorizedKeysFile | ||
| echo "---------------------------" | ||
| fi | ||
| echo '::endgroup::' | ||
| echo "::group::Starting terminal session and connecting to server" | ||
| tmux new -d -s upterm-wrapper -x 132 -y 43 "upterm host ${authorizedKeysParameter} --force-command 'tmux attach -t upterm' -- tmux new -s upterm -x 132 -y 43" | ||
| sleep 2 | ||
| tmux send-keys -t upterm-wrapper q C-m | ||
| sleep 1 | ||
| tmux set -t upterm-wrapper window-size largest | ||
| tmux set -t upterm window-size largest | ||
| echo '::endgroup::' | ||
| echo -e "\nSSH connection information" | ||
| # wait up to 10 seconds for upterm admin socket to appear | ||
| for i in {1..10}; do | ||
| ADMIN_SOCKET=$(find $HOME/.upterm -name "*.sock") | ||
| if [ ! -S "$ADMIN_SOCKET" ]; then | ||
| echo "Waiting for upterm admin socket to appear in ~/.upterm/*.sock ..." | ||
| sleep 1 | ||
| else | ||
| echo "upterm admin socket available in $ADMIN_SOCKET" | ||
| break | ||
| fi | ||
| done | ||
| shopt -s nullglob | ||
| upterm session current --admin-socket ~/.upterm/*.sock || { | ||
| echo "Starting upterm failed." | ||
| exit 0 | ||
| } | ||
| elif [[ "${{ inputs.action }}" == "wait" ]]; then | ||
| # only wait if upterm was installed | ||
| if command -v upterm &>/dev/null; then | ||
| shopt -s nullglob | ||
| echo "SSH connection information" | ||
| upterm session current --admin-socket ~/.upterm/*.sock || { | ||
| echo "upterm isn't running. Not waiting any longer." | ||
| exit 0 | ||
| } | ||
| timeout=${{ inputs.timeout }} | ||
| echo "Waiting $timeout seconds..." | ||
| sleep $timeout | ||
| echo "Keep waiting as long as there's a connected session" | ||
| while upterm session current --admin-socket ~/.upterm/*.sock|grep Connected &>/dev/null; do | ||
| sleep 30 | ||
| done | ||
| echo "No session is connected. Not waiting any longer." | ||
| else | ||
| echo "upterm isn't installed" | ||
| fi | ||
| fi | ||
| shell: bash |
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