benjamin
72f4661bdc
- Multi-stage Dockerfile: discover patterns from PMS binary (capstone), compile .so with zig (musl), layer onto lscr.io/linuxserver/plex - Uses LD_PRELOAD instead of patchelf (which corrupts Plex's musl loader) - Auto-discovery: broad structural patterns with string-anchored fallback (//feature) and relationship-based fallback (BITSET_REF within BS_INIT) - hook.cpp uses __has_include for generated patterns with hardcoded fallbacks - Custom wrapper.sh (no traffic_logger preload) - Vendored Freeloader source (github.com/authrequest/Freeloader, AGPL-3.0) - Removed stale plexmediaserver_crack.so binary - Supports Plex 1.43.3+ (verified against 1.43.2 and 1.43.3)
37 lines
1.7 KiB
Bash
37 lines
1.7 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: AGPL-3.0-or-later
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#
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# In-container launcher for Plex Media Server. Used by the patched
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# plexinc/pms-docker and lscr.io/linuxserver/plex images; both Dockerfiles
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# replace the upstream s6 service run file so it execs this script.
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#
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# Mirrors scripts/plex-crack-wrapper.sh from the native systemd install, with
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# one key invariant:
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#
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# LD_PRELOAD is exported *last*, immediately before `exec`, so the glibc
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# shell helpers spawned for the PLEX_MEDIA_SERVER_INFO_* assignments
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# (grep/awk/uname/tr) are NOT preloaded. The .so's constructor
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# (src/main.cpp) calls unsetenv("LD_PRELOAD") when it loads into the
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# (musl) PMS process, so PMS's glibc helper children (Tuner Service,
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# Script Host, transcoders) are unaffected as well.
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#
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# `exec` is mandatory so s6-supervise sees PMS as the supervised process
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# (no fork). "$@" preserves any args the upstream invocation might add.
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set -eu
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# 1. Platform strings PMS echoes in /identity. Mirrors upstream start.sh.
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export PLEX_MEDIA_SERVER_INFO_VENDOR="$(grep ^NAME= /etc/os-release | awk -F= '{print $2}' | tr -d '"')"
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export PLEX_MEDIA_SERVER_INFO_MODEL="$(uname -m)"
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export PLEX_MEDIA_SERVER_INFO_PLATFORM_VERSION="$(grep ^VERSION= /etc/os-release | awk -F= '{print $2}' | tr -d '"')"
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# 2. Set LD_PRELOAD only now. The .so paths match where the Dockerfiles
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# copy them. Do NOT change this without updating both Dockerfiles.
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PRELOADS=""
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PRELOADS="${PRELOADS}:/usr/lib/plexmediaserver/lib/plexmediaserver_crack.so"
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PRELOADS="${PRELOADS}:/usr/lib/plexmediaserver/lib/plexmediaserver_traffic_logger.so"
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export LD_PRELOAD="${PRELOADS#:}"
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# 3. Hand off to PMS.
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exec "/usr/lib/plexmediaserver/Plex Media Server" "$@"
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