#
# Copyright 2020-2023 the Pacemaker project contributors
#
# The version control history for this file may have further details.
#
# This source code is licensed under the GNU General Public License version 2
# or later (GPLv2+) WITHOUT ANY WARRANTY.
#

include $(top_srcdir)/mk/common.mk
include $(top_srcdir)/mk/release.mk

# Coccinelle is a tool that takes special patch-like files (called semantic patches) and
# applies them throughout a source tree.  This is useful when refactoring, changing APIs,
# catching dangerous or incorrect code, and other similar tasks.  It's not especially
# easy to write a semantic patch but most users should only be concerned about running
# the target and inspecting the results.
#
# Documentation (including examples, which are the most useful):
#     https://coccinelle.gitlabpages.inria.fr/website/docs/
#
# Run the "make cocci" target to just output what would be done, or "make cocci-inplace"
# to apply the changes to the source tree.
#
# COCCI_FILES may be set on the command line, if you want to test just a single file
# while it's under development.  Otherwise, it is a list of all the files that are ready
# to be run.
#
# ref-passed-variables-inited.cocci seems to be returning some false positives around
# GHashTableIters, so it is disabled for the moment.
COCCI_FILES ?=	coccinelle/string-any-of.cocci			\
		coccinelle/string-empty.cocci			\
		coccinelle/string-null-matches.cocci		\
		coccinelle/use-func.cocci


dist_noinst_SCRIPTS	= coccinelle/test/testrunner.sh
EXTRA_DIST		= README 						\
			  gdbhelpers 						\
			  $(COCCI_FILES)					\
			  coccinelle/ref-passed-variables-inited.cocci		\
			  coccinelle/rename-fn.cocci				\
			  coccinelle/test/ref-passed-variables-inited.input.c 	\
			  coccinelle/test/ref-passed-variables-inited.output

# Any file in this list is allowed to use any of the pcmk__ internal functions.
# Coccinelle can use any transformation that depends on "internal" to rewrite
# code to use the internal functions.
MAY_USE_INTERNAL_FILES = $(shell find .. -path "../lib/*.c" -o -path "../lib/*private.h" -o -path "../tools/*.c" -o -path "../daemons/*.c" -o -path '../include/pcmki/*h' -o -name '*internal.h')

# And then any file in this list is public API, which may not use internal
# functions.  Thus, only those transformations that do not depend on "internal"
# may be applied.
OTHER_FILES = $(shell find ../include -name '*h' -a \! -name '*internal.h' -a \! -path '../include/pcmki/*')

.PHONY: cocci
cocci:
	-for cf in $(COCCI_FILES); do \
		for f in $(MAY_USE_INTERNAL_FILES); do \
			spatch $(_SPATCH_FLAGS) -D internal --very-quiet --local-includes --preprocess --sp-file $$cf $$f; \
		done ; \
		for f in $(OTHER_FILES); do \
			spatch $(_SPATCH_FLAGS) --very-quiet --local-includes --preprocess --sp-file $$cf $$f; \
		done ; \
	done

.PHONY: cocci-inplace
cocci-inplace:
	$(MAKE) $(AM_MAKEFLAGS) _SPATCH_FLAGS=--in-place cocci

.PHONY: cocci-test
cocci-test:
	for f in coccinelle/test/*.c; do \
		coccinelle/test/testrunner.sh $$f; \
	done

#
# Static analysis
#

## clang

# See scan-build(1) for possible checkers (leave empty to use default set)
CLANG_checkers ?=

.PHONY: clang
clang:
	OUT=$$(cd $(top_builddir)					\
		&& scan-build $(CLANG_checkers:%=-enable-checker %)	\
		$(MAKE) $(AM_MAKEFLAGS) CFLAGS="-std=c99 $(CFLAGS)"	\
		clean all 2>&1);					\
	REPORT=$$(echo "$$OUT"						\
		| sed -n -e "s/.*'scan-view \(.*\)'.*/\1/p");		\
	[ -z "$$REPORT" ] && echo "$$OUT" || scan-view "$$REPORT"

## coverity

# Aggressiveness (low, medium, or high)
COVLEVEL	?= low

# Generated outputs
COVERITY_DIR	= $(abs_top_builddir)/coverity-$(TAG)
COVTAR		= $(abs_top_builddir)/$(PACKAGE)-coverity-$(TAG).tgz
COVEMACS	= $(abs_top_builddir)/$(TAG).coverity
COVHTML		= $(COVERITY_DIR)/output/errors

# Coverity outputs are phony so they get rebuilt every invocation

.PHONY: $(COVERITY_DIR)
$(COVERITY_DIR): coverity-clean
	$(MAKE) $(AM_MAKEFLAGS) -C $(top_builddir) init core-clean
	$(AM_V_GEN)cd $(top_builddir)	\
		&& cov-build --dir "$@" $(MAKE) $(AM_MAKEFLAGS) core

# Public coverity instance

.PHONY: $(COVTAR)
$(COVTAR): $(COVERITY_DIR)
	$(AM_V_GEN)tar czf "$@" --transform="s@.*$(TAG)@cov-int@" "$<"

.PHONY: coverity
coverity: $(COVTAR)
	@echo "Now go to https://scan.coverity.com/users/sign_in and upload:"
	@echo "  $(COVTAR)"
	@echo "then make clean at the top level"

# Licensed coverity instance
#
# The prerequisites are a little hacky; rather than actually required, some
# of them are designed so that things execute in the proper order (which is
# not the same as GNU make's order-only prerequisites).

.PHONY: coverity-analyze
coverity-analyze: $(COVERITY_DIR)
	@echo ""
	@echo "Analyzing (waiting for coverity license if necessary) ..."
	cd $(top_builddir) && cov-analyze --dir "$<" --wait-for-license	\
		--security --aggressiveness-level "$(COVLEVEL)"

.PHONY: $(COVEMACS)
$(COVEMACS): coverity-analyze
	$(AM_V_GEN)cd $(top_builddir)	\
		&& cov-format-errors --dir "$(COVERITY_DIR)" --emacs-style > "$@"

.PHONY: $(COVHTML)
$(COVHTML): $(COVEMACS)
	$(AM_V_GEN)cd $(top_builddir)	\
		&& cov-format-errors --dir "$(COVERITY_DIR)" --html-output "$@"

.PHONY: coverity-corp
coverity-corp: $(COVHTML)
	$(MAKE) $(AM_MAKEFLAGS) -C $(top_builddir) core-clean
	@echo "Done. See:"
	@echo "  file://$(COVHTML)/index.html"
	@echo "When no longer needed, make coverity-clean"

# Remove all outputs regardless of tag
.PHONY: coverity-clean
coverity-clean:
	-rm -rf "$(abs_builddir)"/coverity-*			\
		"$(abs_builddir)"/$(PACKAGE)-coverity-*.tgz	\
		"$(abs_builddir)"/*.coverity


## cppcheck

GLIB_CFLAGS	?= $(pkg-config --cflags glib-2.0)
GLIB_INCL_DEF_CFLAGS = $(shell echo $(GLIB_CFLAGS) 		\
				| tr ' ' '\n' | grep '^-[IDU]' | paste -d ' ')

# Use CPPCHECK_ARGS to pass extra cppcheck options, e.g.:
# --enable={warning,style,performance,portability,information,all}
# --inconclusive --std=posix
# -DBUILD_PUBLIC_LIBPACEMAKER -DDEFAULT_CONCURRENT_FENCING_TRUE
CPPCHECK_ARGS ?=

CPPCHECK_DIRS = replace lib daemons tools
CPPCHECK_OUT = $(abs_top_builddir)/cppcheck.out

.PHONY: cppcheck
cppcheck:
	cppcheck $(CPPCHECK_ARGS) -I $(top_srcdir)/include	\
		--output-file=$(CPPCHECK_OUT)			\
		--max-configs=30 --inline-suppr -q		\
		--library=posix --library=gnu --library=gtk	\
		$(GLIB_INCL_DEF_CFLAGS) -D__GNUC__ 		\
		$(foreach dir,$(CPPCHECK_DIRS),$(top_srcdir)/$(dir))
	@echo "Done: See $(CPPCHECK_OUT)"
	@echo "When no longer needed, make cppcheck-clean"

.PHONY: cppcheck-clean
cppcheck-clean:
	-rm -f "$(CPPCHECK_OUT)"

#
# Coverage/profiling
#

COVERAGE_DIR = $(top_builddir)/coverage

# Check coverage of unit tests
.PHONY: coverage
coverage: coverage-partial-clean
	cd $(top_builddir)						\
	&& $(MAKE) $(AM_MAKEFLAGS)					\
	&& lcov --no-external --exclude='*_test.c' -c -i -d .		\
		-o pacemaker_base.info					\
	&& $(MAKE) $(AM_MAKEFLAGS) check				\
	&& lcov --no-external --exclude='*_test.c' -c -d .		\
		-o pacemaker_test.info					\
	&& lcov -a pacemaker_base.info -a pacemaker_test.info		\
		-o pacemaker_total.info					\
	&& lcov --remove pacemaker_total.info -o pacemaker_filtered.info\
		"$(abs_top_builddir)/tools/*"				\
		"$(abs_top_builddir)/daemons/*/*"			\
		"$(abs_top_builddir)/replace/*"				\
		"$(abs_top_builddir)/lib/gnu/*"
	genhtml $(top_builddir)/pacemaker_filtered.info -o $(COVERAGE_DIR) -s -t "Pacemaker code coverage"

# Check coverage of CLI regression tests
.PHONY: coverage-cts
coverage-cts: coverage-partial-clean
	cd $(top_builddir)						\
	&& $(MAKE) $(AM_MAKEFLAGS)					\
	&& lcov --no-external -c -i -d tools -o pacemaker_base.info	\
	&& cts/cts-cli							\
	&& lcov --no-external -c -d tools -o pacemaker_test.info	\
	&& lcov -a pacemaker_base.info -a pacemaker_test.info		\
		-o pacemaker_total.info
	genhtml $(top_builddir)/pacemaker_total.info -o $(COVERAGE_DIR) -s

# Remove coverage-related files that aren't needed across runs
.PHONY: coverage-partial-clean
coverage-partial-clean:
	-rm -f $(top_builddir)/pacemaker_*.info
	-rm -rf $(COVERAGE_DIR)
	-find $(top_builddir) -name "*.gcda" -exec rm -f \{\} \;

# This target removes all coverage-related files.  It is only to be run when
# done with coverage analysis and you are ready to go back to normal development,
# starting with re-running ./configure.  It is not to be run in between
# "make coverage" runs.
#
# In particular, the *.gcno files are generated when the source is built.
# Removing those files will break "make coverage" until the whole source tree
# has been built and the *.gcno files generated again.
.PHONY: coverage-clean
coverage-clean: coverage-partial-clean
	-find $(top_builddir) -name "*.gcno" -exec rm -f \{\} \;

#
# indent cannot cope with all our exceptions and needs heavy manual editing
#

# indent target: Limit indent to these directories
INDENT_DIRS	?= .

# indent target: Extra options to pass to indent
INDENT_OPTS	?=

INDENT_IGNORE_PATHS	= daemons/controld/controld_fsa.h	\
			  lib/gnu/*
INDENT_PACEMAKER_STYLE	= --blank-lines-after-declarations		\
			  --blank-lines-after-procedures		\
			  --braces-after-func-def-line			\
			  --braces-on-if-line				\
			  --braces-on-struct-decl-line			\
			  --break-before-boolean-operator		\
			  --case-brace-indentation4			\
			  --case-indentation4				\
			  --comment-indentation0			\
			  --continuation-indentation4			\
			  --continue-at-parentheses			\
			  --cuddle-do-while				\
			  --cuddle-else					\
			  --declaration-comment-column0			\
			  --declaration-indentation1			\
			  --else-endif-column0				\
			  --honour-newlines				\
			  --indent-label0				\
			  --indent-level4				\
			  --line-comments-indentation0			\
			  --line-length80				\
			  --no-blank-lines-after-commas			\
			  --no-comment-delimiters-on-blank-lines	\
			  --no-space-after-function-call-names		\
			  --no-space-after-parentheses			\
			  --no-tabs					\
			  --preprocessor-indentation2			\
			  --procnames-start-lines			\
			  --space-after-cast				\
			  --start-left-side-of-comments			\
			  --swallow-optional-blank-lines		\
			  --tab-size8

.PHONY: indent
indent:
	VERSION_CONTROL=none					\
		find $(INDENT_DIRS) -type f -name "*.[ch]"	\
		$(INDENT_IGNORE_PATHS:%= ! -path '%')		\
		-exec indent $(INDENT_PACEMAKER_STYLE) $(INDENT_OPTS) \{\} \;

#
# Check whether copyrights have been updated appropriately
# (Set COMMIT to desired commit or commit range to check, defaulting to HEAD,
# or set it empty to check uncommitted changes)
#
YEAR		= $(shell date +%Y)
MODIFIED_FILES	= $(shell case "$(COMMIT)" in				\
		  	[0-9a-f]*$(rparen)				\
				git diff-tree --no-commit-id		\
					--name-only "$(COMMIT)" -r ;;	\
		  	*$(rparen)					\
				cd "$(top_srcdir)";			\
				git ls-files --modified ;;		\
			esac)

.PHONY: copyright
copyright:
	@cd "$(top_srcdir)" && for file in $(MODIFIED_FILES); do	\
		if ! grep 'opyright .*$(YEAR).* Pacemaker' "$$file"	\
			>/dev/null 2>&1; then				\
			echo "$$file";					\
		fi;							\
	done

#
# Scratch file for ad-hoc testing
#

EXTRA_PROGRAMS		= scratch
nodist_scratch_SOURCES	= scratch.c
scratch_LDADD		= $(top_builddir)/lib/common/libcrmcommon.la

.PHONY: clean-local
clean-local: coverage-clean coverity-clean cppcheck-clean
	-rm -f $(EXTRA_PROGRAMS)