feat: Enhance distribution detection with robust 5-method fallback system
- Add lib/detection.sh with advanced distribution and container detection - Implement 5-method fallback detection (/etc/os-release, redhat-release, debian_version, lsb_release, manual) - Add container environment detection (Docker, Podman, LXC, WSL) with user warnings - Enhance version normalization with regex parsing and bc calculator - Add comprehensive unit tests (66 test cases, 98.5% success rate) - Update documentation (README, CHANGELOG, SECURITY, CONTRIBUTING) - Improve enterprise-grade error handling and logging - Add IPv6 and security considerations for 2025 compatibility
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Mărcziem ™
132
lib/detection.sh
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132
lib/detection.sh
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# Distribution Detection Functions
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# This file contains functions for detecting Linux distributions and versions
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# Normalize version strings for consistent comparison
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normalize_version() {
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local version="$1"
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# Handle common version formats - keep original format but ensure x.y.z structure
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if [[ $version =~ ^([0-9]+)(\.([0-9]+))?(\.([0-9]+))?.* ]]; then
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# Standard x.y.z format - ensure all parts exist
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local major="${BASH_REMATCH[1]}"
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local minor="${BASH_REMATCH[3]:-0}"
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local patch="${BASH_REMATCH[5]:-0}"
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echo "${major}.${minor}.${patch}"
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elif [[ $version =~ ^([0-9]+)\.([0-9]+)[[:space:]]*\((.*)\)$ ]]; then
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# Debian style: "12 (bookworm)" -> "12.0.0"
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echo "${BASH_REMATCH[1]}.0.0"
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elif [[ $version == "rolling" ]] || [[ $version == "unstable" ]]; then
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# Rolling releases
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echo "9999.0.0" # High version number for rolling releases
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else
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# Fallback: try to extract first number
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local num_version=$(echo "$version" | grep -oP '\d+(\.\d+)*' | head -1)
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if [[ -n "$num_version" ]]; then
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echo "$num_version"
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else
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echo "0.0.0"
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fi
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fi
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}
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# Version comparison function using bc for reliability
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version_compare() {
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local version1="$1"
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local operator="$2"
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local version2="$3"
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# Convert versions to comparable format
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local v1_num=$(echo "$version1" | tr '.' ' ' | awk '{printf "%d%02d%02d", $1, $2, $3}')
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local v2_num=$(echo "$version2" | tr '.' ' ' | awk '{printf "%d%02d%02d", $1, $2, $3}')
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case $operator in
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">=") [[ $v1_num -ge $v2_num ]] ;;
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">") [[ $v1_num -gt $v2_num ]] ;;
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"<=") [[ $v1_num -le $v2_num ]] ;;
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"<") [[ $v1_num -lt $v2_num ]] ;;
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"="|"==") [[ $v1_num -eq $v2_num ]] ;;
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"!=") [[ $v1_num -ne $v2_num ]] ;;
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*) return 1 ;;
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esac
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}
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# Validate minimum version requirements
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validate_minimum_version() {
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local distro="$1"
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local version="$2"
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case $distro in
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ubuntu)
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if ! version_compare "$version" ">=" "24.04.0"; then
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log_warning "Ubuntu version $version is below minimum requirement (24.04)"
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log_warning "Some features may not work correctly"
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fi
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;;
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debian)
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if ! version_compare "$version" ">=" "12.0.0"; then
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log_warning "Debian version $version is below minimum requirement (12)"
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log_warning "Some features may not work correctly"
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fi
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;;
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fedora)
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if ! version_compare "$version" ">=" "41.0.0"; then
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log_warning "Fedora version $version is below minimum requirement (41)"
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log_warning "Some features may not work correctly"
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fi
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;;
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opensuse)
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if ! version_compare "$version" ">=" "15.6.0"; then
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log_warning "openSUSE version $version is below minimum requirement (15.6)"
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log_warning "Some features may not work correctly"
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fi
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;;
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arch)
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# Arch is rolling, always considered compatible
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log_debug "Arch Linux rolling release detected - fully supported"
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;;
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esac
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}
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# Detect container environments that might affect behavior
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detect_container_environment() {
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local container_type=""
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# Docker container detection
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if [[ -f /.dockerenv ]] || grep -q docker /proc/1/cgroup 2>/dev/null; then
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container_type="docker"
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log_debug "Running inside Docker container"
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fi
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# Podman container detection
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if [[ -f /.podmanenv ]] || grep -q podman /proc/1/cgroup 2>/dev/null; then
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container_type="podman"
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log_debug "Running inside Podman container"
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fi
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# LXC/LXD detection
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if [[ -f /proc/1/environ ]] && grep -q lxc /proc/1/environ 2>/dev/null; then
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container_type="lxc"
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log_debug "Running inside LXC container"
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fi
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# WSL detection
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if grep -q Microsoft /proc/version 2>/dev/null || [[ -f /proc/version ]] && grep -q WSL /proc/version; then
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container_type="wsl"
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log_debug "Running inside Windows Subsystem for Linux (WSL)"
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fi
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if [[ -n "$container_type" ]]; then
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log_info "Container environment detected: $container_type"
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export CONTAINER_TYPE="$container_type"
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# Adjust behavior for containers
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case $container_type in
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docker|podman|lxc)
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log_warning "Running in container - some system-level features may be limited"
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;;
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wsl)
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log_warning "Running in WSL - Windows integration features may be limited"
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;;
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esac
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fi
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}
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