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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| #!/usr/bin/bash | ||
| # | ||
| # Connect to a VM created by `vm-run` or `libvirt`. | ||
| # | ||
| # In case of VMs created by `vm-run`, `<vm_name>` is equivalent to image name | ||
| # with a `tmp-` prefix and an optional `-N` suffix when multiple VMs with same name | ||
| # are running at the same time, e.g. `tmp-ubuntu2204` or `tmp-ubuntu2204-2`. | ||
| # | ||
| # Usage: `vm-connect <vm_name>` | ||
| # | ||
| # | ||
| # Copyright 2024 Jakub Kuczys (https://github.com/Jackenmen) | ||
| # | ||
| # Licensed 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 | ||
| # | ||
| # https://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. | ||
|
|
||
| set -eo pipefail | ||
|
|
||
| help() { | ||
| echo 'Usage: vm-connect <vm_name>' | ||
| } | ||
|
|
||
| vm_name=$1 | ||
| if [[ -z "$vm_name" ]]; then | ||
| help | ||
| exit 2 | ||
| fi | ||
|
|
||
| vm_ip=$(virsh domifaddr "$vm_name" | awk -F'[ /]+' '/^[[:blank:]]vnet/ {print $5}' | head -1) | ||
|
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| ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "vm@$vm_ip" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| #!/bin/bash | ||
| # | ||
| # Add a Linux VM image for use by `vm-run`. | ||
| # | ||
| # Usage: `vm-image-add <image_name> <sums_url> <sum_type> <filename_pattern>` | ||
| # | ||
| # The script expects to be able to download a Linux image based on | ||
| # a provided `CHECKSUMS` file in a format returned by `sha256sum`/`sha512sum` program | ||
| # ran with or without `--tag` option. `<filename_pattern>` is used to extract | ||
| # the relevant checksum. This setup is generally supported by the data that is provided | ||
| # by the distro maintainers though there are 2 notable outliers: | ||
| # - Red Hat Enterprise Linux - requires subscription | ||
| # - Oracle Linux - does not provide checksum file in a parsable format | ||
| # | ||
| # You can find examples for different distros at: | ||
| # https://github.com/Jackenmen/dotfiles/tree/main/private_dot_config/little-helpers-vm-images | ||
| # | ||
| # | ||
| # Copyright 2024 Jakub Kuczys (https://github.com/Jackenmen) | ||
| # | ||
| # Licensed 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 | ||
| # | ||
| # https://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. | ||
|
|
||
| set -eo pipefail | ||
|
|
||
| help() { | ||
| echo 'Usage: vm-image-add <image_name> <sums_url> <sum_type> <filename_pattern>' | ||
| } | ||
|
|
||
| image_name=$1 | ||
| if [[ -z "$image_name" ]]; then | ||
| help | ||
| exit 2 | ||
| fi | ||
| sums_url=$2 | ||
| if [[ -z "$sums_url" ]]; then | ||
| help | ||
| exit 2 | ||
| fi | ||
| sum_type=$3 | ||
| if [[ -z "$sum_type" ]]; then | ||
| help | ||
| exit 2 | ||
| fi | ||
| filename_pattern=$4 | ||
| if [[ -z "$filename_pattern" ]]; then | ||
| help | ||
| exit 2 | ||
| fi | ||
|
|
||
| image_cfg_dir="${XDG_CONFIG_HOME:-$HOME/.config}/little-helpers-vm-images" | ||
| mkdir -p "$image_cfg_dir" | ||
| image_file="$image_cfg_dir/$image_name" | ||
| if [[ -e "$image_file" ]]; then | ||
| echo 'Image with this name already exists:' | ||
| echo "- Image name: $(sed '1q;d' "$image_file")" | ||
| echo "- Checksums file URL: $(sed '2q;d' "$image_file")" | ||
| echo "- Checksum type: $(sed '3q;d' "$image_file")" | ||
| echo "- Filename pattern: $(sed '4q;d' "$image_file")" | ||
| exit 1 | ||
| fi | ||
|
|
||
| { | ||
| echo "$image_name" | ||
| echo "$sums_url" | ||
| echo "$sum_type" | ||
| echo "$filename_pattern" | ||
| } > "$image_file" | ||
|
|
||
| if ! vm-image-fetch "$image_name"; then | ||
| exit_code=$? | ||
| rm "$image_file" | ||
| exit "$exit_code" | ||
| fi |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| #!/bin/bash | ||
| # | ||
| # Fetch latest Linux VM image (added through `vm-image-add`) with the given name. | ||
| # | ||
| # This tool is typically invoked automatically. | ||
| # | ||
| # Usage: `vm-image-fetch [-f] <image_name>` | ||
| # | ||
| # Without the `-f` flag, the image only gets fetched when it isn't already in cache. | ||
| # | ||
| # | ||
| # Copyright 2024 Jakub Kuczys (https://github.com/Jackenmen) | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # https://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| set -eo pipefail | ||
|
|
||
| help() { | ||
| echo 'Usage: vm-image-fetch [-f] <image_name>' | ||
| } | ||
|
|
||
| force_download=0 | ||
| OPTIND=1 | ||
| while getopts 'f' flag; do | ||
| case "$flag" in | ||
| f) | ||
| force_download=1 | ||
| ;; | ||
| *) | ||
| help | ||
| exit 2 | ||
| ;; | ||
| esac | ||
| done | ||
| shift "$((OPTIND-1))" | ||
|
|
||
| image_name=$1 | ||
| if [[ -z "$image_name" ]]; then | ||
| help | ||
| exit 2 | ||
| fi | ||
|
|
||
| image_cfg_dir="${XDG_CONFIG_HOME:-$HOME/.config}/little-helpers-vm-images" | ||
| image_file="$image_cfg_dir/$image_name" | ||
| if [[ ! -f "$image_file" ]]; then | ||
| echo 'ERROR: Image with this name does not exist!' | ||
| exit 2 | ||
| fi | ||
|
|
||
| sums_url=$(sed '2q;d' "$image_file") | ||
| if [[ -z "$sums_url" ]]; then | ||
| if [[ ! -f "$image_file" ]]; then | ||
| echo 'ERROR: No sum URL set but the image does not already exist.' | ||
| exit 1 | ||
| fi | ||
| echo 'Using cached image as no sums URL is defined.' | ||
| exit 0 | ||
| fi | ||
|
|
||
| sum_type=$(sed '3q;d' "$image_file") | ||
| filename_pattern=$(sed '4q;d' "$image_file") | ||
|
|
||
| checksums=$(curl -L "$sums_url") | ||
| checksums+=$(echo '' && echo "$checksums" | sed -nE "s/^${sum_type^^} \(($filename_pattern)\) = ([^ \t]+)\$/\2 \1/p") | ||
| matching_files=$(echo "$checksums" | grep -P "^[^ \t]+[ \t]+\*?$filename_pattern\$") | ||
| if [[ "$(echo "$matching_files" | wc -l)" -ne 1 ]]; then | ||
| echo 'ERROR: Expected only one filename to match but got these matches instead:' | ||
| echo "$matching_files" | ||
| exit 1 | ||
| fi | ||
|
|
||
| base_url="${sums_url%/*}" | ||
| new_checksum=$(echo "$matching_files" | awk '{print $1}') | ||
| filename=$(echo "$matching_files" | awk '{print $2}') | ||
| filename="${filename#\*}" | ||
| image_url="$base_url/$filename" | ||
|
|
||
| cache_dir="${XDG_CACHE_HOME:-$HOME/.cache}/little-helpers-vm-images" | ||
| mkdir -p "$cache_dir" | ||
| old_checksum=$( (cat "$cache_dir/$image_name.${sum_type}sum" 2>/dev/null || echo '') | awk '{print $1}' ) | ||
|
|
||
| if [[ "$force_download" -eq 1 || "$old_checksum" != "$new_checksum" ]]; then | ||
| echo 'Downloading new version of the image...' | ||
| wget -O "$cache_dir/$image_name.img" "$image_url" | ||
| echo "$new_checksum $image_name.img" > "$cache_dir/$image_name.${sum_type}sum" | ||
| echo 'Image downloaded and cached.' | ||
| else | ||
| echo 'Cached image already up-to-date.' | ||
| fi |
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