109 lines
3 KiB
Bash
109 lines
3 KiB
Bash
# Parse claudebox flags
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SKIP_AUDIT=false
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DRY_RUN=false
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CHECK_MODE=false
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SHELL_MODE=false
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CLAUDE_ARGS=()
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while (( $# > 0 )); do
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case "$1" in
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--yes|-y) SKIP_AUDIT=true ;;
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--dry-run) DRY_RUN=true ;;
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--check) CHECK_MODE=true ;;
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--shell) SHELL_MODE=true ;;
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--) shift; CLAUDE_ARGS+=("$@"); break ;;
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*) CLAUDE_ARGS+=("$1") ;;
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esac
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shift
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done
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# SANDBOX_PATH is injected by flake.nix via makeBinPath (only runtimeInputs, no host PATH)
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# Resolve binary paths from runtimeInputs
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SANDBOX_BASH="$(command -v bash)"
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CLAUDE_BIN="$(command -v claude)"
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# Record CWD
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CWD=$(pwd)
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# Ensure ~/.claudebox exists
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mkdir -p "$HOME/.claudebox"
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# Generate minimal .gitconfig (D-05)
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GIT_NAME=$(git config --global user.name 2>/dev/null || echo "Claude User")
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GIT_EMAIL=$(git config --global user.email 2>/dev/null || echo "claude@localhost")
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GITCONFIG_TMP=$(mktemp)
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trap 'rm -f "$GITCONFIG_TMP"' EXIT
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cat > "$GITCONFIG_TMP" <<GITEOF
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[user]
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name = $GIT_NAME
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email = $GIT_EMAIL
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[safe]
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directory = *
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GITEOF
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# Build environment --setenv args array (D-03, D-04, SAND-02, SAND-03)
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# Sandbox-generated vars -- set directly, never from host
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ENV_ARGS=(
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--setenv HOME "$HOME"
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--setenv USER "$USER"
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--setenv PATH "$SANDBOX_PATH"
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--setenv SHELL "$SANDBOX_BASH"
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--setenv TMPDIR /tmp
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--setenv XDG_RUNTIME_DIR /tmp
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--setenv NIX_SSL_CERT_FILE /etc/ssl/certs/ca-certificates.crt
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--setenv SSL_CERT_FILE /etc/ssl/certs/ca-certificates.crt
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)
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# Allowlisted host vars -- only pass if set on host
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HOST_ALLOWLIST=(TERM EDITOR LANG LC_ALL ANTHROPIC_API_KEY)
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for var in "${HOST_ALLOWLIST[@]}"; do
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if [[ -v "$var" ]]; then
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ENV_ARGS+=(--setenv "$var" "${!var}")
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fi
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done
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# CLAUDEBOX_EXTRA_ENV escape hatch (D-03, comma-separated)
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if [[ -v CLAUDEBOX_EXTRA_ENV ]]; then
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IFS=',' read -ra EXTRAS <<< "$CLAUDEBOX_EXTRA_ENV"
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for var in "${EXTRAS[@]}"; do
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var="${var// /}" # trim whitespace
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if [[ -n "$var" ]] && [[ -v "$var" ]]; then
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ENV_ARGS+=(--setenv "$var" "${!var}")
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fi
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done
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fi
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# Build sandbox command
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if [[ "$SHELL_MODE" == true ]]; then
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SANDBOX_CMD=("$SANDBOX_BASH" "${CLAUDE_ARGS[@]}")
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else
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SANDBOX_CMD=("$CLAUDE_BIN" --dangerously-skip-permissions "${CLAUDE_ARGS[@]}")
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fi
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# exec bwrap (SAND-04 through SAND-15, UX-06, D-01)
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exec bwrap \
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--clearenv \
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"${ENV_ARGS[@]}" \
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--tmpfs / \
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--proc /proc \
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--dev /dev \
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--tmpfs /tmp \
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--ro-bind /nix/store /nix/store \
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--bind /nix/var/nix /nix/var/nix \
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--ro-bind /etc/resolv.conf /etc/resolv.conf \
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--ro-bind /etc/ssl /etc/ssl \
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--ro-bind /etc/static /etc/static \
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--ro-bind /etc/passwd /etc/passwd \
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--ro-bind /etc/group /etc/group \
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--ro-bind /etc/hosts /etc/hosts \
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--ro-bind /etc/nsswitch.conf /etc/nsswitch.conf \
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--ro-bind /etc/nix /etc/nix \
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--symlink "$(readlink -f "$(command -v env)")" /usr/bin/env \
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--tmpfs "$HOME" \
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--bind "$HOME/.claudebox" "$HOME/.claude" \
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--ro-bind "$GITCONFIG_TMP" "$HOME/.gitconfig" \
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--bind "$CWD" "$CWD" \
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--chdir "$CWD" \
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-- "${SANDBOX_CMD[@]}"
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