mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-11 14:03:23 -05:00
108 lines
3.7 KiB
Bash
Executable File
108 lines
3.7 KiB
Bash
Executable File
#!/bin/sh
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set -eu
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# One-line bootstrap and local wrapper. The downloaded installer is accepted
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# only when it matches the SHA-256 embedded in this wrapper.
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INSTALLER=""
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# When sourced from stdin, $0 is the shell name and the working directory is
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# not a trusted location for install.py. Reuse an adjacent installer only for
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# an actual local install.sh invocation.
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case "$0" in
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install.sh|*/install.sh)
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if [ -f "$0" ]; then
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SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
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INSTALLER="$SCRIPT_DIR/install.py"
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fi
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;;
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esac
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TEMP_INSTALLER=""
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TEMP_DIRECTORY=""
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DEFAULT_INSTALL_URL="https://raw.githubusercontent.com/Abdess/retrobios/main/install.py"
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DEFAULT_INSTALL_SHA256="44492e7dea7639fec18b2b9c040606481b11dd7a91987e8b2548313fc82c902d"
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MAX_INSTALLER_BYTES=2097152
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cleanup() {
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if [ -n "$TEMP_INSTALLER" ] && [ -f "$TEMP_INSTALLER" ]; then
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rm -f -- "$TEMP_INSTALLER"
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fi
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if [ -n "$TEMP_DIRECTORY" ] && [ -d "$TEMP_DIRECTORY" ]; then
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rmdir -- "$TEMP_DIRECTORY" 2>/dev/null || true
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fi
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}
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trap cleanup EXIT HUP INT TERM
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if [ -z "$INSTALLER" ] || [ ! -f "$INSTALLER" ]; then
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install_url=${RETROBIOS_INSTALL_URL:-$DEFAULT_INSTALL_URL}
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expected=${RETROBIOS_INSTALL_SHA256:-$DEFAULT_INSTALL_SHA256}
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case "$install_url" in
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https://*) ;;
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*) echo "Error: installer URL must use HTTPS." >&2; exit 1 ;;
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esac
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case "$expected" in
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*[!0-9A-Fa-f]*)
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echo "Error: installer SHA-256 must contain exactly 64 hexadecimal characters." >&2
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exit 1
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;;
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esac
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if [ "${#expected}" -ne 64 ]; then
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echo "Error: installer SHA-256 must contain exactly 64 hexadecimal characters." >&2
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exit 1
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fi
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TEMP_DIRECTORY=$(mktemp -d)
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TEMP_INSTALLER="$TEMP_DIRECTORY/install.py"
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if command -v curl >/dev/null 2>&1; then
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curl --fail --location --proto '=https' --tlsv1.2 \
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"$install_url" --output "$TEMP_INSTALLER"
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elif command -v wget >/dev/null 2>&1; then
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wget --https-only --output-document="$TEMP_INSTALLER" "$install_url"
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else
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echo "Error: curl or wget is required to download the installer." >&2
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echo " On Debian or Ubuntu: sudo apt install curl" >&2
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exit 1
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fi
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actual_size=$(wc -c < "$TEMP_INSTALLER" | tr -d ' ')
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if [ "$actual_size" -gt "$MAX_INSTALLER_BYTES" ]; then
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echo "Error: downloaded installer exceeds the size limit." >&2
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exit 1
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fi
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if command -v sha256sum >/dev/null 2>&1; then
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actual=$(sha256sum "$TEMP_INSTALLER" | awk '{print $1}')
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elif command -v shasum >/dev/null 2>&1; then
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actual=$(shasum -a 256 "$TEMP_INSTALLER" | awk '{print $1}')
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else
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echo "Error: sha256sum or shasum is required." >&2
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exit 1
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fi
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expected=$(printf '%s' "$expected" | tr '[:upper:]' '[:lower:]')
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if [ "$actual" != "$expected" ]; then
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echo "Error: the downloaded installer does not match its expected fingerprint." >&2
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echo " Nothing was run and nothing was written." >&2
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echo " The download was most likely cut short. Try again, on another network if possible." >&2
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exit 1
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fi
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INSTALLER="$TEMP_INSTALLER"
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fi
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PYTHON=""
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for command_name in python3 python; do
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if command -v "$command_name" >/dev/null 2>&1 \
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&& "$command_name" -c 'import sys; raise SystemExit(sys.version_info < (3, 8))' 2>/dev/null; then
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PYTHON=$command_name
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break
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fi
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done
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if [ -z "$PYTHON" ]; then
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echo "Error: Python 3.8 or newer is required." >&2
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echo " Install it, then run this command again. On Debian or Ubuntu: sudo apt install python3" >&2
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exit 1
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fi
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# Piped from curl, standard input is this script, not the terminal: the
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# installer would skip every question it can ask. Hand it the terminal when
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# there is one.
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if [ ! -t 0 ] && (: </dev/tty) 2>/dev/null; then
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"$PYTHON" "$INSTALLER" "$@" </dev/tty
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else
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"$PYTHON" "$INSTALLER" "$@"
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fi
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