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synced 2026-10-19 21:22:50 +03:00
don't follow a planted symlink when writing /dev/shm/go2rtc.yaml
After the first start the go2rtc user owned /dev/shm/go2rtc.yaml and could swap it for a dangling symlink. The run script's -f test was false for a dangling link, so the link survived, and root's create_config.py then created the link target and the chown handed it to go2rtc. The run script now removes any existing entry, create_config.py creates the file with O_EXCL and O_NOFOLLOW at mode 0640, and the chown uses -h.
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@@ -66,7 +66,7 @@ function set_libva_version() {
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set_libva_version
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if [[ -f "/dev/shm/go2rtc.yaml" ]]; then
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if [[ -e "/dev/shm/go2rtc.yaml" || -L "/dev/shm/go2rtc.yaml" ]]; then
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echo "[INFO] Removing stale config from last run..."
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rm /dev/shm/go2rtc.yaml
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fi
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@@ -88,7 +88,7 @@ fi
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readonly homekit_config_path="/config/go2rtc_homekit.yml"
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if [[ "$(id -u)" -eq 0 && "$runs_as_root" -eq 0 ]]; then
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python3 /usr/local/go2rtc/prepare_homekit.py "${homekit_config_path}" --chown
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chown go2rtc:go2rtc /dev/shm/go2rtc.yaml 2>/dev/null || true
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chown -h go2rtc:go2rtc /dev/shm/go2rtc.yaml 2>/dev/null || true
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else
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python3 /usr/local/go2rtc/prepare_homekit.py "${homekit_config_path}"
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fi
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