mirror of
https://github.com/okxlin/appstore.git
synced 2026-09-23 08:01:00 +00:00
126 lines
4.1 KiB
Bash
Executable File
126 lines
4.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd -P)"
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ENV_FILE="${ENV_FILE:-${ROOT_DIR}/.env}"
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fail() {
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printf '%s\n' "$1" >&2
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exit 1
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}
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read_env_value() {
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local key="$1"
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local value
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value="$(sed -n "s/^${key}=//p" "$ENV_FILE" | tail -n 1)"
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case "$value" in
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\"*\") value="${value#\"}"; value="${value%\"}" ;;
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\'*\') value="${value#\'}"; value="${value%\'}" ;;
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esac
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printf '%s\n' "$value"
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}
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set_env_value() {
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local key="$1"
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local value="$2"
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local temp_file
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temp_file="$(mktemp "${ROOT_DIR}/.microbin-env.tmp.XXXXXX")"
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awk -v key="$key" -v value="$value" '
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BEGIN { written = 0 }
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$0 ~ "^" key "=" {
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if (!written) {
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print key "=" value
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written = 1
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}
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next
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}
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{ print }
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END { if (!written) print key "=" value }
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' "$ENV_FILE" > "$temp_file"
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chmod 600 "$temp_file"
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mv -f -- "$temp_file" "$ENV_FILE"
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}
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validate_ipv4() {
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local value="$1"
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local octet
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local -a octets
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[[ "$value" =~ ^[0-9]{1,3}(\.[0-9]{1,3}){3}$ ]] || fail "PANEL_APP_BIND_ADDRESS must be an IPv4 address"
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IFS=. read -r -a octets <<< "$value"
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for octet in "${octets[@]}"; do
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((10#$octet <= 255)) || fail "PANEL_APP_BIND_ADDRESS contains an invalid IPv4 octet"
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done
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}
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validate_positive_integer() {
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local key="$1"
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local value="$2"
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local maximum="$3"
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[[ "$value" =~ ^[1-9][0-9]*$ ]] || fail "$key must be a positive integer"
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((10#$value <= maximum)) || fail "$key must not exceed $maximum"
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}
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generate_alphanumeric() {
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local length="$1"
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local material
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material="$(openssl rand -base64 96 | tr -dc A-Za-z0-9)"
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[[ ${#material} -ge $length ]] || fail "unable to generate sufficient random material"
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printf '%s\n' "${material:0:length}"
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}
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[[ -f "$ENV_FILE" ]] || fail "$ENV_FILE not found"
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[[ ! -L "$ENV_FILE" ]] || fail "$ENV_FILE must not be a symbolic link"
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[[ "$(id -u)" -eq 0 ]] || fail "MicroBin init must run as root"
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command -v openssl >/dev/null 2>&1 || fail "openssl is required to generate credentials"
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validate_ipv4 "$(read_env_value PANEL_APP_BIND_ADDRESS)"
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validate_positive_integer PANEL_APP_PORT_HTTP "$(read_env_value PANEL_APP_PORT_HTTP)" 65535
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admin_username="$(read_env_value MICROBIN_ADMIN_USERNAME)"
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[[ "$admin_username" =~ ^[A-Za-z0-9][A-Za-z0-9_.-]{0,63}$ ]] || fail "MICROBIN_ADMIN_USERNAME is invalid"
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admin_password="$(read_env_value MICROBIN_ADMIN_PASSWORD)"
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if [[ -z "$admin_password" || "$admin_password" == generate ]]; then
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admin_password="$(generate_alphanumeric 48)"
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fi
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[[ "$admin_password" =~ ^[A-Za-z0-9]{32,128}$ ]] ||
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fail "MICROBIN_ADMIN_PASSWORD must contain 32 to 128 alphanumeric characters"
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validate_positive_integer MICROBIN_MAX_FILE_SIZE_ENCRYPTED_MB "$(read_env_value MICROBIN_MAX_FILE_SIZE_ENCRYPTED_MB)" 4096
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validate_positive_integer MICROBIN_MAX_FILE_SIZE_UNENCRYPTED_MB "$(read_env_value MICROBIN_MAX_FILE_SIZE_UNENCRYPTED_MB)" 4096
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data_raw="$(read_env_value APP_DATA_DIR)"
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[[ -n "$data_raw" && "$data_raw" != /* ]] || fail "APP_DATA_DIR must be a non-empty relative path"
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case "$data_raw" in
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*$'\n'* | *$'\r'* | *\\* | *:* | *'$'* | *'#'* | *'"'* | *"'"*)
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fail "APP_DATA_DIR contains unsupported characters"
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;;
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esac
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relative_data="${data_raw#./}"
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[[ -n "$relative_data" ]] || fail "APP_DATA_DIR must not resolve to the version root"
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current="$ROOT_DIR"
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IFS=/ read -r -a components <<< "$relative_data"
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for component in "${components[@]}"; do
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[[ -n "$component" && "$component" != . && "$component" != .. ]] || fail "APP_DATA_DIR contains traversal"
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current="$current/$component"
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[[ ! -L "$current" ]] || fail "APP_DATA_DIR must not contain symbolic-link components"
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done
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data_dir="$(realpath -m -- "$ROOT_DIR/$relative_data")"
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case "$data_dir" in
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"$ROOT_DIR"/*) ;;
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*) fail "APP_DATA_DIR must stay inside the application version directory" ;;
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esac
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install -d -m 0750 -- "$data_dir"
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resolved_data="$(realpath -e -- "$data_dir")"
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case "$resolved_data" in
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"$ROOT_DIR"/*) ;;
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*) fail "APP_DATA_DIR resolves outside the application version directory" ;;
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esac
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chown -R 65534:65534 -- "$resolved_data"
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set_env_value MICROBIN_ADMIN_PASSWORD "$admin_password"
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chmod 600 "$ENV_FILE"
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