[ssusysinfo] Intial implementation. Fixes JB#36977

Device details such as model, designation, manufacturer and pretty name
are needed by low level system daemons. The SSU D-Bus interface can't be
used early in the boot and libssu is a Qt C++  library - which makes it
difficult to use from scripts / daemons written in in plain C.

Provide libssusysinfo that duplicates some logic in libssu and makes it
possible to query device details without requiring D-Bus IPC or Qt code.

Provide ssusysinfo command line utility that can be used to query the
information from script files.

The intent is that the library and associated binaries can be used both
from open source and proprietary components - thus all new code is
licensed under LGPL v2.1.

Code dealing with ini-file handling is taken from "profiled" tree and
uses separate (BSD) license, see lib/inifile.[ch] and lib/symtab.[ch].

Signed-off-by: Simo Piiroinen <simo.piiroinen@jollamobile.com>

.depend

@@ -0,0 +1,80 @@
+bin/ssu-sysinfo.o:\
+	bin/ssu-sysinfo.c\
+	lib/ssusysinfo.h\
+
+bin/ssu-sysinfo.pic.o:\
+	bin/ssu-sysinfo.c\
+	lib/ssusysinfo.h\
+
+lib/inifile.o:\
+	lib/inifile.c\
+	lib/inifile.h\
+	lib/logging.h\
+	lib/symtab.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/inifile.pic.o:\
+	lib/inifile.c\
+	lib/inifile.h\
+	lib/logging.h\
+	lib/symtab.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/logging.o:\
+	lib/logging.c\
+	lib/logging.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/logging.pic.o:\
+	lib/logging.c\
+	lib/logging.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/ssusysinfo.o:\
+	lib/ssusysinfo.c\
+	lib/inifile.h\
+	lib/ssusysinfo.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/ssusysinfo.pic.o:\
+	lib/ssusysinfo.c\
+	lib/inifile.h\
+	lib/ssusysinfo.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/symtab.o:\
+	lib/symtab.c\
+	lib/symtab.h\
+	lib/xmalloc.h\
+
+lib/symtab.pic.o:\
+	lib/symtab.c\
+	lib/symtab.h\
+	lib/xmalloc.h\
+
+lib/util.o:\
+	lib/util.c\
+	lib/logging.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/util.pic.o:\
+	lib/util.c\
+	lib/logging.h\
+	lib/util.h\
+	lib/xmalloc.h\
+
+lib/xmalloc.o:\
+	lib/xmalloc.c\
+	lib/xmalloc.h\
+
+lib/xmalloc.pic.o:\
+	lib/xmalloc.c\
+	lib/xmalloc.h\
+

COPYING

@@ -0,0 +1,10 @@
+The ini-file parsing logic is derived from profiled sources and
+uses slightly modified BSD 3 clause -license. See
+ - LICENSE.BSD-3CLAUSE
+ - lib/inifile.c
+ - lib/inifile.h
+ - lib/symtab.c
+ - lib/symtab.h
+
+The rest of the code uses standard LGPL v2.1 -license. See
+ - LICENSE.LGPL-v2.1

Makefile

@@ -0,0 +1,269 @@
+# ----------------------------------------------------------------------------
+# Package version
+# ----------------------------------------------------------------------------
+
+VERSION   := 0.0.0
+
+# ----------------------------------------------------------------------------
+# Shared object version
+# ----------------------------------------------------------------------------
+
+SOMAJOR   := .1
+SOMINOR   := .0
+SORELEASE := .0
+
+SOLINK    := .so
+SONAME    := .so$(SOMAJOR)
+SOVERS    := .so$(SOMAJOR)$(SOMINOR)$(SORELEASE)
+
+# ----------------------------------------------------------------------------
+# Files to build / install
+# ----------------------------------------------------------------------------
+
+TARGETS_DSO    += libssusysinfo$(SOVERS)
+TARGETS_BIN    += ssu-sysinfo
+TARGETS_ALL    += $(TARGETS_DSO) $(TARGETS_BIN) libssusysinfo$(SONAME)
+
+INSTALL_HDR    += lib/ssusysinfo.h
+INSTALL_PC     += pkg-config/ssu-sysinfo.pc
+
+# ----------------------------------------------------------------------------
+# Installation directories
+# ----------------------------------------------------------------------------
+
+# Dummy default install dir - override from packaging scripts
+DESTDIR         ?= /tmp/ssu-sysinfo-test-install
+
+# Standard install directories
+_PREFIX         ?= /usr#                         # /usr
+_INCLUDEDIR     ?= $(_PREFIX)/include#           # /usr/include
+_EXEC_PREFIX    ?= $(_PREFIX)#                   # /usr
+_BINDIR         ?= $(_EXEC_PREFIX)/bin#          # /usr/bin
+_SBINDIR        ?= $(_EXEC_PREFIX)/sbin#         # /usr/sbin
+_LIBEXECDIR     ?= $(_EXEC_PREFIX)/libexec#      # /usr/libexec
+_LIBDIR         ?= $(_EXEC_PREFIX)/lib#          # /usr/lib
+_SYSCONFDIR     ?= /etc#                         # /etc
+_DATADIR        ?= $(_PREFIX)/share#             # /usr/share
+_MANDIR         ?= $(_DATADIR)/man#              # /usr/share/man
+_INFODIR        ?= $(_DATADIR)/info#             # /usr/share/info
+_DEFAULTDOCDIR  ?= $(_DATADIR)/doc#              # /usr/share/doc
+_LOCALSTATEDIR  ?= /var#                         # /var
+_UNITDIR        ?= /lib/systemd/system#
+_TESTSDIR       ?= /opt/tests#                   # /opt/tests
+
+# ----------------------------------------------------------------------------
+# Default flags
+# ----------------------------------------------------------------------------
+
+CPPFLAGS += -D_GNU_SOURCE
+CPPFLAGS += -D_FILE_OFFSET_BITS=64
+
+COMMON   += -Wall
+COMMON   += -Wextra
+COMMON   += -Werror # DEVEL TIME ONLY - DO NOT LEAVE IN
+COMMON   += -Os
+COMMON   += -g
+
+CFLAGS   += $(COMMON)
+CFLAGS   += -std=c99
+CFLAGS   += -Wmissing-prototypes
+CFLAGS   += -Wno-missing-field-initializers
+
+CXXFLAGS += $(COMMON)
+
+LDFLAGS  += -g
+
+LDLIBS   += -Wl,--as-needed
+
+# Options that are useful for weeding out unused functions
+#CFLAGS += -O0 -ffunction-sections -fdata-sections
+#LDLIBS += -Wl,--gc-sections,--print-gc-sections
+
+# ----------------------------------------------------------------------------
+# Flags from pkg-config
+# ----------------------------------------------------------------------------
+
+#PKG_NAMES += glib-2.0
+
+# we do not need pkg-config for maintenance targets
+maintenance  = normalize clean distclean mostlyclean
+intersection = $(strip $(foreach w,$1, $(filter $w,$2)))
+ifneq ($(call intersection,$(maintenance),$(MAKECMDGOALS)),)
+PKG_CONFIG   ?= true
+endif
+
+# pkg-config does not grok CFLAGS vs CPPFLAGS ... deal with it
+ifneq ($(strip $(PKG_NAMES)),)
+PKG_CONFIG   ?= pkg-config
+PKG_CFLAGS   := $(shell $(PKG_CONFIG) --cflags $(PKG_NAMES))
+PKG_LDLIBS   := $(shell $(PKG_CONFIG) --libs   $(PKG_NAMES))
+PKG_CPPFLAGS := $(filter -D%,$(PKG_CFLAGS)) $(filter -I%,$(PKG_CFLAGS))
+PKG_CFLAGS   := $(filter-out -I%, $(filter-out -D%, $(PKG_CFLAGS)))
+endif
+
+CPPFLAGS += $(PKG_CPPFLAGS)
+CFLAGS   += $(PKG_CFLAGS)
+LDLIBS   += $(PKG_LDLIBS)
+
+# ----------------------------------------------------------------------------
+# Top level targets
+# ----------------------------------------------------------------------------
+
+.PHONY: build install clean distclean mostlyclean
+
+build:: $(TARGETS_ALL)
+
+install:: build
+
+clean:: mostlyclean
+	$(RM) $(TARGETS_ALL)
+
+distclean:: clean
+
+mostlyclean::
+	$(RM) *.o *~ *.bak */*.o */*~ */*.bak
+
+install ::
+
+# ----------------------------------------------------------------------------
+# Implicit rules
+# ----------------------------------------------------------------------------
+
+.SUFFIXES: %.c %.o %.pic.o %$(SOVERS) %$(SONAME)
+
+%.o : %.c
+	$(CC) -o $@ -c $< $(CPPFLAGS) $(CFLAGS)
+
+%.pic.o : %.c
+	$(CC) -o $@ -c $< -fPIC -fvisibility=hidden $(CPPFLAGS) $(CFLAGS)
+
+%$(SOVERS) :
+	$(CC) -o $@ -shared -Wl,-soname,$*$(SONAME) $^ $(LDFLAGS) $(LDLIBS)
+
+%$(SONAME) : %$(SOVERS)
+	ln -sf $< $@
+
+% : bin/%.o
+	$(CC) -o $@ $^ $(LDFLAGS) $(LDLIBS)
+
+# ----------------------------------------------------------------------------
+# Build libssusysinfo$(SOVERS)
+# ----------------------------------------------------------------------------
+
+libssusysinfo_SRC += lib/ssusysinfo.c
+libssusysinfo_SRC += lib/inifile.c
+libssusysinfo_SRC += lib/logging.c
+libssusysinfo_SRC += lib/symtab.c
+libssusysinfo_SRC += lib/util.c
+libssusysinfo_SRC += lib/xmalloc.c
+
+libssusysinfo_OBJ += $(patsubst %.c,%.pic.o,$(libssusysinfo_SRC))
+
+libssusysinfo$(SOVERS) : $(libssusysinfo_OBJ)
+
+# ----------------------------------------------------------------------------
+# Build ssu-sysinfo
+# ----------------------------------------------------------------------------
+
+ssu_sysinfo_SRC += bin/ssu-sysinfo.c
+
+ssu_sysinfo_OBJ += $(patsubst %.c,%.o,$(ssu_sysinfo_SRC))
+ssu_sysinfo_OBJ += libssusysinfo$(SONAME)
+
+ssu-sysinfo : $(ssu_sysinfo_OBJ)
+
+# ----------------------------------------------------------------------------
+# Statically linked binary for static analysis, not build normally
+# ----------------------------------------------------------------------------
+
+monolith_OBJ += $(patsubst %.c,%.o,$(ssu_sysinfo_SRC))
+monolith_OBJ += $(patsubst %.c,%.o,$(libssusysinfo_SRC))
+
+monolith : $(monolith_OBJ)
+	$(CC) -o $@ $^ $(LDFLAGS) $(LDLIBS)
+clean::
+	$(RM) monolith
+
+# ----------------------------------------------------------------------------
+# Install to $(DESTDIR)
+# ----------------------------------------------------------------------------
+
+install ::
+	# binaries
+	install -d -m 755 $(DESTDIR)$(_BINDIR)
+	install -m 755 $(TARGETS_BIN) $(DESTDIR)$(_BINDIR)/
+	# dynamic libraries
+	install -d -m 755 $(DESTDIR)$(_LIBDIR)
+	install -m 644 $(TARGETS_DSO) $(DESTDIR)$(_LIBDIR)/
+	# headers
+	install -d -m 755 $(DESTDIR)$(_INCLUDEDIR)/ssusysinfo
+	install -m 644 $(INSTALL_HDR) $(DESTDIR)$(_INCLUDEDIR)/ssusysinfo/
+	# pkg config
+	install -d -m 755 $(DESTDIR)$(_LIBDIR)/pkgconfig
+	install -m 644 $(INSTALL_PC) $(DESTDIR)$(_LIBDIR)/pkgconfig
+	# symlinks for dynamic linking
+	for f in $(TARGETS_DSO); do \
+	  ln -sf $$(basename $$f $(SOVERS))$(SONAME) \
+	    $(DESTDIR)$(_LIBDIR)/$$(basename $$f $(SOVERS))$(SOLINK); \
+	done
+
+# ----------------------------------------------------------------------------
+# Source code normalization
+# ----------------------------------------------------------------------------
+
+.PHONY: normalize
+normalize::
+	normalize_whitespace -M Makefile
+	normalize_whitespace -a $(wildcard rpm/*.spec */*.pc)
+	normalize_whitespace -a $(wildcard */*.py */*.sh)
+	normalize_whitespace -a $(wildcard */*.[ch])
+
+# ----------------------------------------------------------------------------
+# Prototype scanning (two phases to allow preprocessing in scratchbox)
+# ----------------------------------------------------------------------------
+
+.SUFFIXES: %.q %.p %.sp
+
+%.q  : %.c ; gcc -E -o $@ $(CPPFLAGS) $<
+%.p  : %.q ; cproto < $< | prettyproto.py > $@    && cat $@
+%.sp : %.q ; cproto -s < $< | prettyproto.py > $@ && cat $@
+
+mostlyclean::
+	$(RM) *.q *.p *.sp
+
+# ----------------------------------------------------------------------------
+# Header dependecy scanning
+# ----------------------------------------------------------------------------
+
+.PHONY: depend
+
+depend::
+	$(CC) -MM -MG $(CPPFLAGS) $(wildcard */*.c) | util/depend_filter.py > .depend
+
+ifneq ($(MAKECMDGOALS),depend) # not while: make depend
+ifneq (,$(wildcard .depend))   # not if .depend does not exist
+include .depend
+endif
+endif
+
+# ----------------------------------------------------------------------------
+# Hunt for excess include statements
+# ----------------------------------------------------------------------------
+
+.PHONY: headers
+.SUFFIXES: %.checked
+
+headers:: c_headers c_sources
+
+%.checked : %
+	find_unneeded_includes.py $(CPPFLAGS) $(CFLAGS) -- $<
+	@touch $@
+
+clean::
+	$(RM) */*.checked */*.order
+
+c_headers:: $(patsubst %,%.checked,$(wildcard */*.h))
+c_sources:: $(patsubst %,%.checked,$(wildcard */*.c))
+
+order::
+	find_unneeded_includes.py -- $(wildcard */*.h) $(wildcard */*.c)