mirror of
https://github.com/lhns/steam-frame-nix.git
synced 2026-10-06 06:00:22 +02:00
Pierre Kisters
2e259c49fe
A failed write of prefs.js.sfn (e.g. a full disk) emptied prefs.js; now prefs.js and the user.js link stay for the next launch to retry.
59 lines
2.7 KiB
Nix
59 lines
2.7 KiB
Nix
# The Firefox Flatpak wrapper (firefox.nix, a steamFrame.launchers wrapper):
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# gets the entry's full command line (`flatpak run … org.mozilla.firefox …`)
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# as its arguments. Outside the nested desktop it just runs it. In the nested
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# desktop (KDE) it adds `--profile <desktop profile>` (not to the profile
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# manager action, --ProfileManager); with the fullscreen fix it links that
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# profile's user.js to the sandbox path desktopJs (undoing the fix there)
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# right before Firefox starts, and once Firefox has exited and the profile is
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# no longer in use (a second launch that only hands its URL to the running
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# Firefox returns at once) removes the link and the value Firefox stored from
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# it in prefs.js. A user.js of the user's own is never touched. After a crash
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# (or a failed rewrite of prefs.js) the next launch or steam-frame-nix-cleanup
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# finishes the removal.
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{ lib, writeShellScript, coreutils, findutils, gnugrep
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, profileDir # shell word, e.g. "$HOME/.var/app/…/desktop"
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, desktopFix ? false
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, desktopJs ? "/app/etc/firefox/steam-frame-nix-desktop-user.js"
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, desktopKeys ? [ "full-screen-api.ignore-widgets" ]
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}:
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writeShellScript "firefox-wrapper" (''
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PATH=${lib.makeBinPath [ coreutils findutils gnugrep ]}:$PATH
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if [ "$XDG_CURRENT_DESKTOP" != KDE ]; then exec "$@"; fi
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for a; do [ "$a" = --ProfileManager ] && exec "$@"; done
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prof="${profileDir}"
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# Firefox exits (status 1) if the --profile dir doesn't exist yet.
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mkdir -p "$prof"
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'' + lib.optionalString desktopFix ''
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js=${lib.escapeShellArg desktopJs}
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u=$prof/user.js
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pats=${lib.escapeShellArg (lib.concatMapStringsSep "\n" (k: "user_pref(${builtins.toJSON k},") desktopKeys)}
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# Firefox holds .parentlock open while it uses a profile (the sandbox sees
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# the profile at the same path).
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inUse() { find /proc/[0-9]*/fd -lname "$prof/.parentlock" -print -quit 2>/dev/null | grep -q .; }
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ours() { [ -L "$u" ] && [ "$(readlink "$u")" = "$js" ]; }
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sfn_unlink() {
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ours && ! inUse || return 0
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if [ -f "$prof/prefs.js" ] && grep -qF "$pats" "$prof/prefs.js"; then
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# If that fails (grep status 2, a failed write, e.g. a full disk),
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# prefs.js and the link stay for the next try.
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{ grep -vF "$pats" "$prof/prefs.js"; [ $? -le 1 ]; } > "$prof/prefs.js.sfn" &&
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cat "$prof/prefs.js.sfn" > "$prof/prefs.js"
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ok=$?
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rm -f "$prof/prefs.js.sfn"
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[ $ok = 0 ] || return 0
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fi
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rm -f "$u"
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}
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if [ -e "$u" ] || [ -L "$u" ]; then
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ours || echo "firefox: $u is not steam-frame-nix's; fullscreen stays inside the window in this profile" >&2
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else
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ln -s "$js" "$u"
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fi
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"$@" --profile "$prof"
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status=$?
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sfn_unlink
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exit $status
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'' + lib.optionalString (!desktopFix) ''
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exec "$@" --profile "$prof"
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'')
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