nils/shairport-sync
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5e170a67a8dc3eec111aa9c6da979fb34d4ca0c3
shairport-sync/Makefile.am
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Mike Brady 83ae1d286b Add a new exit handler to enable Shairport Sync to exit cleanly — that is, on exit, to clean up everything, e.g. open files, ports, sockets, devices, threads, it has been using. 
If cleanup isn’t finished after one second, exit will occur unconditionally.
Use the new exit handler for normal exit, for SIGINT and SIGTERM handling, for abnormal exit after fatal errors, and for handling quit requests from the D-Bus and MPRIS interfaces.

When an unfixable error occurs without an installed unfixable error handler, unlock the mutex protecting Shairport Sync’s alsa backend to permit a clean exit.

Fix a very low-level mutex-locking error that interfered with debugging.

Simplify much mutex lock handling.
Remove lots of old and unused code, variables and definitions.

Update audio_sndio.c to remove some harmless compiler warnings.

Undo adding two seconds for messages to be output before _Exit() on die() to allow messages to be output...
Undo making die() exit unconditionally.
2026-07-16 14:51:06 +01:00

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Makefile
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ARFLAGS = cr
# To be able to ref to the user's own home directory:
homedir = @HOME@
# Note that xmlmantohtml isn't producing correct HTML.
# Uncomment the if/else and SUBDIR lines in this stanza to make xmltoman build shairport-sync.1
if USE_XMLTOMAN
SUBDIRS = man
else
man_MANS = $(top_srcdir)/man/shairport-sync.1
endif
lib_pair_ap_a_CFLAGS = -Wall -g -DCONFIG_GCRYPT -pthread --include=utilities/debug.h
lib_tinyhttp_a_CFLAGS = -pthread
lib_dbus_interface_a_CFLAGS = -pthread
lib_mpris_interface_a_CFLAGS = -pthread
bin_PROGRAMS = shairport-sync
# BUILT_SOURCES get built before anything else (?)
BUILT_SOURCES =
CLEANFILES =
shairport_sync_LDADD =
noinst_LIBRARIES =
# See below for the flags for the test client program
shairport_sync_SOURCES = shairport.c bonjour_strings.c mdns.c common.c rtp.c \
player.c audio.c loudness.c activity_monitor.c \
rtsp.c \
utilities/debug.c utilities/network_utilities.c utilities/rtsp_message_utilities.c \
utilities/string_utilities.c \
utilities/exit.c
if BUILD_FOR_DARWIN
AM_CXXFLAGS = -I/usr/local/include -Wno-multichar -Wall -Wextra -Wno-deprecated-declarations -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
AM_CFLAGS = --include=utilities/debug.h -Wno-multichar -Wall -Wextra -Wno-deprecated-declarations -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
else
if BUILD_FOR_FREEBSD
AM_CXXFLAGS = -I/usr/local/include -Wno-multichar -Wall -Wextra -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
AM_CFLAGS = --include=utilities/debug.h -Wno-multichar -Wall -Wextra -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
else
if BUILD_FOR_OPENBSD
AM_CXXFLAGS = -I/usr/local/include -Wno-multichar -Wall -Wextra -Wno-clobbered -Wno-psabi -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
AM_CFLAGS = --include=utilities/debug.h -Wno-multichar -Wall -Wextra -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
else
AM_CXXFLAGS = -Wshadow -fno-common -Wno-multichar -Wall -Wextra -Wformat -Wformat=2 -Wno-clobbered -Wno-psabi -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
AM_CFLAGS = --include=utilities/debug.h -Wshadow -fno-common -Wno-multichar -Wall -Wextra -Wformat -Wformat=2 -Wno-clobbered -Wno-psabi -pthread -DSYSCONFDIR=\"$(sysconfdir)\"
endif
endif
endif
# include version information from git if available
if USE_GIT_VERSION
## Check if the git version information has changed and rebuild gitversion.h if so
.PHONY: gitversion-check
gitversion-check:
$(top_srcdir)/verify-gitversion
BUILT_SOURCES += gitversion-check
CLEANFILES += gitversion-stamp gitversion.h
endif
if USE_HAMMERTON
shairport_sync_SOURCES += alac.c
endif
if USE_APPLE_ALAC
shairport_sync_SOURCES += apple_alac.cpp
endif
if USE_CUSTOMPIDDIR
AM_CFLAGS+= \
-DPIDDIR=\"$(CUSTOM_PID_DIR)\"
endif
if USE_AVAHI
shairport_sync_SOURCES += mdns_avahi.c
endif
if USE_TINYSVCMDNS
shairport_sync_SOURCES += mdns_tinysvcmdns.c tinysvcmdns.c
endif
if USE_EXTERNAL_MDNS
shairport_sync_SOURCES += mdns_external.c
endif
if USE_ALSA
shairport_sync_SOURCES += audio_alsa.c
endif
if USE_JACK
shairport_sync_SOURCES += audio_jack.c
endif
if USE_SNDIO
shairport_sync_SOURCES += audio_sndio.c
endif
if USE_STDOUT
shairport_sync_SOURCES += audio_stdout.c
endif
if USE_PIPE
shairport_sync_SOURCES += audio_pipe.c
endif
if USE_DUMMY
shairport_sync_SOURCES += audio_dummy.c
endif
if USE_AO
shairport_sync_SOURCES += audio_ao.c
endif
if USE_SOUNDIO
shairport_sync_SOURCES += audio_soundio.c
endif
if USE_PULSEAUDIO
shairport_sync_SOURCES += audio_pa.c
endif
if USE_PIPEWIRE
shairport_sync_SOURCES += audio_pw.c
endif
if USE_CONVOLUTION
shairport_sync_SOURCES += FFTConvolver/AudioFFT.cpp FFTConvolver/FFTConvolver.cpp FFTConvolver/Utilities.cpp FFTConvolver/convolver.cpp FFTConvolver/ConvolverThreadPool.cpp
AM_CXXFLAGS += -std=c++11
endif
if USE_DNS_SD
shairport_sync_SOURCES += mdns_dns_sd.c
endif
if USE_METADATA
shairport_sync_SOURCES += metadata/pc_queue.c metadata/core.c
endif
if USE_METADATA_PIPE
shairport_sync_SOURCES += metadata/pipe.c
endif
if USE_METADATA_MULTICAST
shairport_sync_SOURCES += metadata/multicast.c
endif
if USE_METADATA_HUB
shairport_sync_SOURCES += metadata/hub.c
endif
if USE_MQTT
shairport_sync_SOURCES += mqtt.c
endif
if USE_DACP_CLIENT
shairport_sync_SOURCES += dacp.c
shairport_sync_LDADD += lib_tinyhttp.a
noinst_LIBRARIES += lib_tinyhttp.a
lib_tinyhttp_a_SOURCES = tinyhttp/chunk.c tinyhttp/header.c tinyhttp/http.c
endif
if USE_AIRPLAY_2
shairport_sync_SOURCES += ap2_buffered_audio_processor.c ap2_event_receiver.c \
ap2_event_message_handler.c ptp-utilities.c \
utilities/buffered_read.c utilities/structured_buffer.c utilities/mod23.c \
utilities/generate_random_uuid.c utilities/generate_device_uuid.c \
plists/get_info_response.c
shairport_sync_LDADD += lib_pair_ap.a
lib_pair_ap_a_SOURCES = pair_ap/pair.c pair_ap/pair_fruit.c pair_ap/pair_homekit.c pair_ap/pair-tlv.c
noinst_LIBRARIES += lib_pair_ap.a
plists/get_info_response.h: plists/get_info_response.xml
sh $(top_srcdir)/xml_plist_codegen.sh $(top_srcdir)/plists/get_info_response.xml $(abs_builddir)/plists
plists/get_info_response.c: plists/get_info_response.h
touch plists/get_info_response.c
BUILT_SOURCES += plists/get_info_response.h plists/get_info_response.c
CLEANFILES +=plists/get_info_response.h plists/get_info_response.c
endif
if USE_DBUS
shairport_sync_LDADD += lib_dbus_interface.a
noinst_LIBRARIES += lib_dbus_interface.a
lib_dbus_interface_a_SOURCES = dbus-interface.c
shairport_sync_SOURCES += dbus-service.c
BUILT_SOURCES += dbus-interface.h dbus-interface.c
CLEANFILES += dbus-interface.h dbus-interface.c
dbus-interface.c: org.gnome.ShairportSync.xml
gdbus-codegen --interface-prefix org.gnome --generate-c-code dbus-interface $(top_srcdir)/org.gnome.ShairportSync.xml
dbus-interface.h: dbus-interface.c
touch dbus-interface.h
endif
if USE_MPRIS
shairport_sync_LDADD += lib_mpris_interface.a
noinst_LIBRARIES += lib_mpris_interface.a
lib_mpris_interface_a_SOURCES = mpris-interface.c
shairport_sync_SOURCES += mpris-service.c
BUILT_SOURCES += mpris-interface.h mpris-interface.c
CLEANFILES += mpris-interface.h mpris-interface.c
mpris-interface.c: org.mpris.MediaPlayer2.xml
gdbus-codegen --interface-prefix org.mpris --generate-c-code mpris-interface $(top_srcdir)/org.mpris.MediaPlayer2.xml
mpris-interface.h: mpris-interface.c
touch mpris-interface.h
endif
noinst_PROGRAMS =
if USE_DBUS_CLIENT
#Make it, but don't install it anywhere
noinst_PROGRAMS += shairport-sync-dbus-test-client
shairport_sync_dbus_test_client_SOURCES = shairport-sync-dbus-test-client.c
shairport_sync_dbus_test_client_LDADD = lib_dbus_interface.a
endif
if USE_MPRIS_CLIENT
#Make it, but don't install it anywhere
noinst_PROGRAMS += shairport-sync-mpris-test-client
shairport_sync_mpris_test_client_SOURCES = shairport-sync-mpris-test-client.c
shairport_sync_mpris_test_client_LDADD = lib_mpris_interface.a
endif
CONFIG_FILE_INSTALL_TARGET = config-file-install-local
$(CONFIG_FILE_INSTALL_TARGET): scripts/shairport-sync.conf
install -d $(DESTDIR)$(sysconfdir)
install -m 0644 $(top_srcdir)/scripts/shairport-sync.conf $(DESTDIR)$(sysconfdir)/shairport-sync.conf.sample
[ -f $(DESTDIR)$(sysconfdir)/shairport-sync.conf ] || cp $(top_srcdir)/scripts/shairport-sync.conf $(DESTDIR)$(sysconfdir)/shairport-sync.conf
if BUILD_FOR_LINUX
DBUS_POLICY_DIR = /etc/dbus-1/system.d
else
DBUS_POLICY_DIR = $(sysconfdir)/dbus-1/system.d
endif
if USE_DBUS
if INSTALL_CYGWIN_STARTUP
DBUS_POLICY_FILE = scripts/shairport-sync-dbus-policy-cygwin.conf
else
DBUS_POLICY_FILE = scripts/shairport-sync-dbus-policy.conf
endif # INSTALL_CYGWIN_STARTUP
DBUS_POLICY_INSTALL_TARGET = dbus-policy-install-local
$(DBUS_POLICY_INSTALL_TARGET): $(DBUS_POLICY_FILE)
install -d $(DESTDIR)$(DBUS_POLICY_DIR)
install -m 0644 $(top_srcdir)/$(DBUS_POLICY_FILE) $(DESTDIR)$(DBUS_POLICY_DIR)/shairport-sync-dbus.conf
endif # USE_DBUS
if USE_MPRIS
if INSTALL_CYGWIN_STARTUP
MPRIS_POLICY_FILE = scripts/shairport-sync-mpris-policy-cygwin.conf
else
MPRIS_POLICY_FILE = scripts/shairport-sync-mpris-policy.conf
endif # INSTALL_CYGWIN_STARTUP
MPRIS_POLICY_INSTALL_TARGET = mpris-policy-install-local
$(MPRIS_POLICY_INSTALL_TARGET): $(MPRIS_POLICY_FILE)
install -d $(DESTDIR)$(DBUS_POLICY_DIR)
install -m 0644 $(top_srcdir)/$(MPRIS_POLICY_FILE) $(DESTDIR)$(DBUS_POLICY_DIR)/shairport-sync-mpris.conf
endif # USE_MPRIS
INSTALL_GROUP_TARGET = install-group-local
$(INSTALL_GROUP_TARGET):
getent group shairport-sync &>/dev/null || groupadd -r shairport-sync &>/dev/null
INSTALL_USER_TARGET = install-user-local
$(INSTALL_USER_TARGET): $(INSTALL_GROUP_TARGET)
getent passwd shairport-sync &> /dev/null || useradd -r -M -g shairport-sync -s /usr/sbin/nologin -G audio shairport-sync &>/dev/null
if INSTALL_SYSTEMV_STARTUP
INSTALL_SYSTEMV_TARGET = install-systemv-local
# watch out -- shairport-sync is created during the ./configure step and
# will be stored in a scripts folder in the _build_ folder
# which will be the source folder if you're not using a separate build folder
$(INSTALL_SYSTEMV_TARGET): scripts/shairport-sync $(INSTALL_USER_TARGET)
install -d $(DESTDIR)$(sysconfdir)/init.d
[ -e $(DESTDIR)$(sysconfdir)/init.d/shairport-sync ] || install -m 0755 scripts/shairport-sync $(DESTDIR)$(sysconfdir)/init.d
endif # INSTALL_SYSTEMV_STARTUP
if INSTALL_SYSTEMD_STARTUP
SYSTEMD_SERVICE = shairport-sync.service
INSTALL_SYSTEMD_TARGET = install-systemd-local
# watch out -- shairport-sync.service is created during the ./configure step and
# will be stored in a scripts folder in the _build_ folder
# which will be the source folder if you're not using a separate build folder
# Install a system service script, but don't replace an existing script
$(INSTALL_SYSTEMD_TARGET): scripts/$(SYSTEMD_SERVICE) $(INSTALL_USER_TARGET)
install -d $(DESTDIR)$(systemdsystemunitdir)
[ -e $(DESTDIR)$(systemdsystemunitdir)/shairport-sync.service ] || install -m 0644 scripts/$(SYSTEMD_SERVICE) $(DESTDIR)$(systemdsystemunitdir)/shairport-sync.service
endif # INSTALL_SYSTEMD_STARTUP
if INSTALL_FREEBSD_STARTUP
# Choose a uid and gid of 801 completely arbitrarity, except that it should be below 1000. FreeBSD doesn't seem to allow you to say "an ID in the range of..."
install-freebsd-user-local:
pw showgroup shairport-sync > /dev/null 2>&1 || pw addgroup -n shairport-sync -g 801 > /dev/null 2>&1
pw showuser shairport-sync > /dev/null 2>&1 || pw adduser -c "shairport-sync unprivileged user" -n shairport-sync -u 801 -s /usr/sbin/nologin -d /nonexistent > /dev/null 2>&1
INSTALL_FREEBSD_TARGET = install-freebsd-local
$(INSTALL_FREEBSD_TARGET): scripts/shairport-sync.freebsd install-freebsd-user-local
install -d -o shairport-sync -g shairport-sync $(DESTDIR)/var/run/shairport-sync
install -d $(DESTDIR)/usr/local/etc/rc.d/
install -m 0555 $(top_srcdir)/scripts/shairport-sync.freebsd $(DESTDIR)/usr/local/etc/rc.d/shairport_sync
endif # INSTALL_FREEBSD_STARTUP
if INSTALL_CYGWIN_STARTUP
INSTALL_CYGWIN_TARGET = install-cygwin-local
$(INSTALL_CYGWIN_TARGET): scripts/shairport-sync-config
install -d $(DESTDIR)/usr/local/bin
[ -e $(DESTDIR)/usr/local/bin/shairport-sync-config ] || install -m 0755 $(top_srcdir)/scripts/shairport-sync-config $(DESTDIR)/usr/local/bin/
endif # INSTALL_CYGWIN_STARTUP
install-config-files: $(CONFIG_FILE_INSTALL_TARGET) \
$(DBUS_POLICY_INSTALL_TARGET) \
$(MPRIS_POLICY_INSTALL_TARGET) \
$(INSTALL_SYSTEMV_TARGET) \
$(INSTALL_SYSTEMD_TARGET) \
$(INSTALL_SYSTEMD_USER_TARGET) \
$(INSTALL_FREEBSD_TARGET) \
$(INSTALL_CYGWIN_TARGET)
if INSTALL_CONFIG_FILES
install-exec-hook: install-config-files
endif
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