Miles WardandClaude Opus 4.8
1eb41288c3
Three things, headlined by the long-blocked graphical PXE menu.
## 1. Graphical PXE boot background — the iVentoy feature, finally
iVentoy paints a PNG background on the PXE screen using stock iPXE
built with CONSOLE_FRAMEBUFFER + IMAGE_PNG + CONSOLE_CMD; the public
iPXE binaries omit those, so `console --picture` is a no-op on them.
We now build our own iPXE from upstream with that thin config delta
(deploy/ipxe/local/{general,console}.h).
The 8-release blocker was cc1 segfaulting when an amd64 gcc ran under
QEMU emulation on the arm64 build host. Fix: a new `ipxe-build`
Dockerfile stage pinned to $BUILDPLATFORM (native arch — no emulation)
that cross-compiles x86_64 iPXE with CROSS_COMPILE=x86_64-linux-gnu-.
The compiler runs native and emits x86_64. Validated end-to-end:
png.o + fbcon.o + pixbuf.o all compile and link (confirmed via the
linked-ELF symbol table, not just strings), ~112s, no segfault. Host
tools needed libc6-dev (dropped by --no-install-recommends; without
it the native host compile falls through to iPXE's freestanding
headers and dies on bits/stdint.h — fixed).
Server side:
- pxe_logo.rs is now a full-screen background compositor: a dark field
(matching the WebUI theme) with the operator's uploaded logo across
the top, or — with no upload — a default OpenPXE rainbow disc drawn
with pure pixel math (no font/SVG deps). Always 1024x768 (iPXE
doesn't scale; this is the universal mode). WebP/JPEG/GIF/PNG in,
PNG out (iPXE only eats PNG).
- /branding/pxe-logo always returns a PNG now (default when no logo,
default when SVG) so the menu always has a background.
- render_menu uses `console --picture … --top 290 || console`: paints
the background and reserves the logo band on PNG-capable binaries
(x86_64 UEFI), cleanly falls back to text on the others. The ASCII
wordmark is GONE.
Only x86_64 UEFI is built from source (host-arch-agnostic cross build);
BIOS/i386/arm64 keep upstream-fetched no-PNG binaries + text fallback.
Modern clients are overwhelmingly x86_64 UEFI.
## 2. NFS AUTH_SYS credential — fixes NFS3ERR_ACCES
v0.4.68's privileged-port fix got past MNT3ERR_ACCES (mount); operators
then hit NFS3ERR_ACCES on READDIR because nfs3_client defaults to
AUTH_NONE and virtually every server exports sec=sys. We now present an
AUTH_UNIX credential (uid 0 / gid 0): no_root_squash servers treat us
as root, root_squash servers map us to anon which reads any
world-readable ISO share. Kept fixed (no UI knob) to stay dead-simple.
Hint updated: a remaining NFS3ERR_ACCES is now a server-side
permission/squash issue, not IP/auth-flavor.
## 3. FleetDM-style full-width logo (top-left)
When a custom logo is uploaded the sidebar header drops the bundled
mark + "OpenPXE" wordmark and lets the logo span the header
(left-aligned, capped 200x50, contain). Rendered server-side via a
brand-class in index_html (has_custom_logo) so there's no flash of the
default. The bundled-default case is unchanged.
Tests: 164 passing. clippy -D warnings clean. iPXE build stage
validated in isolation before the full image build.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
179 lines
8.9 KiB
Docker
179 lines
8.9 KiB
Docker
# syntax=docker/dockerfile:1.7
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#
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# OpenPXE — multi-stage build.
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#
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# Design:
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# - stage `fetch`: runs scripts/fetch-ipxe.sh to pull official iPXE binaries
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# into assets/ipxe/ so the rust build can embed them via rust-embed.
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# - stage `build`: compiles the workspace with cargo in release mode.
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# - stage `runtime`: Debian slim image with setcap for NET_BIND_SERVICE,
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# running as a non-root UID. No shell in PATH for the service user;
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# attacker surface is just the openpxe binary + libc.
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#
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# Why not distroless? We want setcap support and easy debug (`oc rsh`).
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# Debian slim at ~75 MB + binary ~25 MB is fine for a PXE server that
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# spends most of its life idle.
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ARG RUST_VERSION=1.95
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########## fetch iPXE binaries + wimboot ##########
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# Pulls the upstream boot.ipxe.org pre-builds (no PNG support) plus
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# wimboot. These cover the arches we don't build from source here:
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# BIOS undionly.kpxe and i386-efi (which need a 32-bit x86 toolchain),
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# and serve as the baseline that the PNG-enabled x86_64/arm64 UEFI
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# binaries from the `ipxe-build` stage overlay on top of.
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FROM debian:12-slim AS fetch
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RUN apt-get update && apt-get install -y --no-install-recommends curl ca-certificates \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /src
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COPY scripts/fetch-ipxe.sh scripts/fetch-ipxe.sh
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RUN mkdir -p assets/ipxe && bash scripts/fetch-ipxe.sh
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########## build PNG-enabled iPXE from source ##########
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# v0.4.69: THE graphical-boot-menu unlock. iVentoy paints a PNG
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# background on the PXE screen using stock iPXE built with
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# CONSOLE_FRAMEBUFFER + IMAGE_PNG + CONSOLE_CMD; the public iPXE
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# binaries omit those, so `console --picture` is a no-op on them.
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# We build our own from upstream with that thin config delta.
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#
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# The historical blocker was cc1 segfaulting when an amd64 gcc ran
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# under QEMU emulation on an arm64 host. The fix: pin this stage to
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# $BUILDPLATFORM (the NATIVE builder arch — arm64 on an Apple-Silicon
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# Mac, amd64 in x86 CI) and cross-compile with a real cross toolchain
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# (CROSS_COMPILE=x86_64-linux-gnu-). The compiler runs native and
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# emits x86_64 — no emulation, no segfault. arm64-efi builds natively.
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FROM --platform=$BUILDPLATFORM debian:12-slim AS ipxe-build
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# libc6-dev is REQUIRED and easy to miss under --no-install-recommends:
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# iPXE's host utilities (elf2efi, zbin) compile with the native gcc and
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# pull <stdint.h>; without the native libc headers gcc's #include_next
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# falls through to iPXE's freestanding headers and dies on bits/stdint.h.
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# The target (iPXE firmware) code is -ffreestanding/-nostdinc, so the
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# x86_64 cross toolchain needs NO cross libc headers.
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RUN apt-get update && apt-get install -y --no-install-recommends \
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git make perl gcc binutils libc6-dev \
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gcc-x86-64-linux-gnu binutils-x86-64-linux-gnu \
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ca-certificates \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /src
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COPY scripts/build-ipxe.sh scripts/build-ipxe.sh
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COPY deploy/ipxe/local/ deploy/ipxe/local/
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RUN mkdir -p assets/ipxe && bash scripts/build-ipxe.sh /src/assets/ipxe
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########## build openpxe ##########
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FROM rust:${RUST_VERSION}-bookworm AS build
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WORKDIR /src
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# v0.4.5: build a fully static musl binary (matches Bootimus v0.1.70's
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# move). The resulting `/openpxe` has no glibc dependency at all, which:
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# - Lets the runtime stage be any Linux distro (we still ship Debian
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# slim for the `samba` / `wimtools` / `nfs-common` shellouts, but a
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# scratch/distroless variant becomes a one-line swap).
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# - Cuts a class of "GLIBC_2.39 not found" surprises when running on
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# older RHEL/Rocky hosts that don't match Debian 12's libc version.
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# - Sidesteps cross-compilation snags (the binary is its own world).
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#
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# x86_64-unknown-linux-musl is fully static by default (no extra
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# RUSTFLAGS needed). musl-tools provides the linker.
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends musl-tools \
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&& rm -rf /var/lib/apt/lists/* \
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&& rustup target add x86_64-unknown-linux-musl
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# Copy the whole workspace in one go. We used to do a two-pass "cache-prime
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# with stubs, then real build" dance for dep-compile reuse; that turned out
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# to silently serve stale stub binaries when cargo's fingerprint didn't
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# notice the source swap. A single build is ~1.5 min longer on cold cache
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# but guarantees the binary reflects the sources we copied.
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# Do not copy rust-toolchain.toml into the image. The local workspace pins
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# developer tooling, but inside Docker we intentionally use the Rust version
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# selected by the base image. Copying rust-toolchain.toml with
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# `channel = "stable"` makes rustup download a second full toolchain during
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# `cargo build`, which is slow and can exhaust small Colima/CI disks.
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COPY Cargo.toml Cargo.lock ./
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COPY crates/ crates/
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# Baseline binaries (BIOS / i386 / wimboot), then overlay the
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# PNG-enabled x86_64 + arm64 UEFI binaries built from source. The
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# overlay wins for snponly.efi / ipxe.efi / snponly-arm64.efi so the
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# common modern clients get the graphical background; the rest keep the
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# upstream no-PNG binaries and the menu's `|| console` text fallback.
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COPY --from=fetch /src/assets/ipxe /src/assets/ipxe
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COPY --from=ipxe-build /src/assets/ipxe/snponly.efi /src/assets/ipxe/snponly.efi
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COPY --from=ipxe-build /src/assets/ipxe/ipxe.efi /src/assets/ipxe/ipxe.efi
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# Cache cargo registry + target across builds. The mtime touch is
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# belt-and-suspenders: cargo occasionally misses mtime-only changes on
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# networked FS; this forces a fingerprint check.
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RUN --mount=type=cache,target=/usr/local/cargo/registry \
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--mount=type=cache,target=/src/target,sharing=locked \
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find crates -name '*.rs' -exec touch {} + && \
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cargo build --release --target x86_64-unknown-linux-musl --bin openpxe && \
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cp target/x86_64-unknown-linux-musl/release/openpxe /openpxe && \
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ls -l /openpxe
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########## runtime ##########
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FROM debian:12-slim AS runtime
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends \
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ca-certificates libcap2-bin tini gosu iproute2 \
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wimtools samba smbclient \
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&& rm -rf /var/lib/apt/lists/* \
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&& useradd --system --uid 10001 --home-dir /var/lib/openpxe --shell /usr/sbin/nologin openpxe \
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&& mkdir -p /var/lib/openpxe/isos /var/lib/openpxe/work /var/lib/openpxe/smb \
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&& chown -R openpxe:openpxe /var/lib/openpxe
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# v0.4.5: the openpxe binary itself is now built against musl and is
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# fully static — no glibc dependency. The runtime stage still ships
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# Debian slim because OpenPXE shells out to the packages below for
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# functionality we deliberately don't reimplement in-process:
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#
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# wimtools - `wimlib-imagex`, used to inject startnet.cmd into boot.wim.
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# samba - `smbd` serves extracted Windows install media on :445 so
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# WinPE can `net use`. Guest read-only, scoped to
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# /var/lib/openpxe/smb. This package provides the SERVER
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# side only; the client CLI is a separate package below.
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# smbclient - v0.4.66: Samba's `smbclient` userspace CLI, used by
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# the Storage tab's SMB shares manager to list and stream
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# ISOs from remote SMB servers without ever mounting them
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# in the kernel. In Debian 12 `smbclient` is NOT pulled
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# in by the `samba` package — they're siblings, not
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# parent/child. v0.4.65 shipped without this line and
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# every "Add share" attempt surfaced
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# `could not exec smbclient: No such file or directory`
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# until this landed.
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# iproute2 - `ip addr` / `ip route` for the auto-detected Network
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# tab fields (NIC name, subnet mask, default gateway).
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# Tiny, always available; we don't pull in netlink crates
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# for this one-shot startup probe.
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# gosu - drops privileges cleanly from root after the entrypoint
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# fixes bind-mount ownership (common OpenShift/Docker UX
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# issue).
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#
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# v0.4.65 dropped `nfs-common` — kernel-mount NFS is gone. The SMB
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# shares replacement uses userspace `smbclient` and needs no kernel
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# helpers.
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#
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# A future "openpxe-static" variant could drop everything except the
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# binary onto distroless once we move the Windows + SMB legs to
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# in-process Rust crates.
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COPY --from=build /openpxe /usr/local/bin/openpxe
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COPY deploy/docker/entrypoint.sh /usr/local/bin/entrypoint.sh
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RUN chmod +x /usr/local/bin/entrypoint.sh
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# Grant the binary the ability to bind <1024 ports as a non-root user.
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# This is the only capability OpenPXE needs for proxy-mode DHCP + TFTP + HTTP.
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RUN setcap cap_net_bind_service=+ep /usr/local/bin/openpxe
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# IMPORTANT: we do NOT `USER openpxe` here. The entrypoint runs as root,
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# chowns the mounted data dirs, then execs the binary via gosu as openpxe.
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# OpenShift ignores USER directives anyway (it injects its own uid), and
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# there entrypoint.sh's non-root branch just execs directly.
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WORKDIR /var/lib/openpxe
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ENV OPENPXE_ISO_DIR=/var/lib/openpxe/isos \
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OPENPXE_WORK_DIR=/var/lib/openpxe/work \
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OPENPXE_LOG=info,openpxe=info
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EXPOSE 67/udp 69/udp 4011/udp 80/tcp 445/tcp
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ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/entrypoint.sh"]
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