mirror of https://github.com/BOINC/boinc.git
73 lines
3.2 KiB
Bash
73 lines
3.2 KiB
Bash
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# This file is part of BOINC.
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# http:#boinc.berkeley.edu
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# Copyright (C) 2020 University of California
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#
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# BOINC is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License
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# as published by the Free Software Foundation,
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# either version 3 of the License, or (at your option) any later version.
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#
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# BOINC is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with BOINC. If not, see <http:#www.gnu.org/licenses/>.
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#
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# boinc_ss_helper.sh
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#
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# Used under OS 10.15 Catalina and later to launch screensaver graphics apps
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#
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# BOINC screensaver plugin BOINCSaver.saver (BOINC Screensaver Coordinator)
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# sends a run_graphics_app RPC to the BOINC client. The BOINC client then
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# launches switcher, which submits this script to launchd as a LaunchAgent
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# for the user that invoked the screensaver (the currently logged in user.)
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# This script then launches gfx_switcher, which uses fork and execv to
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# launch the project graphics app. gfx_switcher writes the graphics app's
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# process ID to shared memory, to be read by the Screensaver Coordinator.
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# gfx_switcher waits for the graphics app to exit and notifies then notifies
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# the Screensaver Coordinator by writing 0 to the shared memory.
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#
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# We must go through launchd to establish a connection to the windowserver
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# in the currently logged in user's space for use by the project graphics
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# app. This script then launches gfx_switcher, which uses execv to launch
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# the project graphics app.
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# This Rube Goldberg process is necessary due to limitations on screensavers
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# introduced in OS 10.15 Catalina.
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#!/bin/sh
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# argv[0] = path to this script
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# argv[1] = directory
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# argv[2] = branded screensaver name
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# argv[3] = command for gfx_switcher: -default_gfx, -launch_gfx or -kill_gfx
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# argv[4] = "boincscr", slot # or pid
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# argv[5] = --fullscreen (not used for -kill_gfx)
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# argv[6] = --ScreensaverLoginUser (not used for -kill_gfx)
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# argv[7] = login user name (not used for -kill_gfx)
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## For testing only:
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## echo "number of args after argv[0] = $#" >> /Users/Shared/boinc_helper_script.txt
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## echo "arg[1] = $1" >> /Users/Shared/boinc_helper_script.txt
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## echo "arg[2] = $2" >> /Users/Shared/boinc_helper_script.txt
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## echo "arg[3] = $3" >> /Users/Shared/boinc_helper_script.txt
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## echo "arg[4] = $4" >> /Users/Shared/boinc_helper_script.txt
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## if [ $# -eq 7 ]; then ## bash does not count argv[0] in $#
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## echo "arg[5] = $5" >> /Users/Shared/boinc_helper_script.txt
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## echo "arg[6] = $6" >> /Users/Shared/boinc_helper_script.txt
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## echo "arg[7] = $7" >> /Users/Shared/boinc_helper_script.txt
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## fi
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cd "$1"
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pwd
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if [ $# -eq 7 ]; then ## bash does not count argv[0] in $#
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"/Library/Screen Savers/$2.saver/Contents/Resources/gfx_switcher" $3 $4 $5 $6 $7
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else
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"/Library/Screen Savers/$2.saver/Contents/Resources/gfx_switcher" $3 $4
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fi
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# A new submit of edu.berkeley.boinc-ss_helper will be ignored if for some reason
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# edu.berkeley.boinc-ss_helper is still loaded, so ensure it is removed.
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launchctl remove edu.berkeley.boinc-ss_helper
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