1 # -*- mode: makefile; coding: utf-8 -*-
2 # Copyright © 2007-2008 Anders Kaseorg <andersk@mit.edu> and
3 # Tim Abbott <tabbott@mit.edu>
5 # This program is free software; you can redistribute it and/or
6 # modify it under the terms of the GNU General Public License as
7 # published by the Free Software Foundation; either version 2, or (at
8 # your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # Don't include check-files.mk in your rules files directly; instead
21 # use config-package.mk.
23 # check-files.mk is used to verify that files on local disk have not
24 # been modified from the upstream packaged version. Its only API
25 # function is adding the following function as a dependency:
27 # $(call debian_check_files,filename)
29 # Returns the path to a copy of filename that is verified to be
30 # unmodified from the version shipped by the distribution (by checking
31 # md5sums). The function causes the package to fail to build if the
32 # relevant configuration file has been modified on the build machine.
34 ifndef _cdbs_rules_check_files
35 _cdbs_rules_check_files = 1
37 include /usr/share/cdbs/1/rules/divert.mk
39 DEB_CHECK_FILES_TMPDIR = debian/check_file_copies
41 debian_check_files_source = $(if $(DEB_CHECK_FILES_SOURCE_$(1)),$(DEB_CHECK_FILES_SOURCE_$(1)),$(1))
42 debian_check_files_check = $(call divert_files_replace_name,$(call debian_check_files_source,$(1)))
44 debian_check_files = $(patsubst %,$(DEB_CHECK_FILES_TMPDIR)%,$(1))
45 undebian_check_files = $(patsubst $(DEB_CHECK_FILES_TMPDIR)%,%,$(1))
47 debian_check_files_tmp = $(patsubst %,%.tmp,$(call debian_check_files,$(1)))
48 undebian_check_files_tmp = $(call undebian_check_files,$(patsubst %.tmp,%,$(1)))
50 # We need a level of indirection here in order to make sure that
51 # normal makefile targets, like "clean", are not affected by the
52 # debian_check_files rules.
53 $(call debian_check_files,%): $(call debian_check_files_tmp,%)
56 # We check md5sums from both /var/lib/dpkg/info/$(package).md5sums
57 # (the md5sums database for non-conffiles) and the conffiles database
58 # used for prompting about conffiles being changed (via dpkg-query).
60 # There is some wrangling here because the formats of these sources differ.
61 $(call debian_check_files_tmp,%): target = $(call undebian_check_files_tmp,$@)
62 $(call debian_check_files_tmp,%): name = $(call debian_check_files_check,$(target))
63 $(call debian_check_files_tmp,%): truename = $(shell /usr/sbin/dpkg-divert --truename $(name))
64 $(call debian_check_files_tmp,%): package = $(shell LC_ALL=C dpkg -S $(name) | sed -n '/^diversion by /! s/: .*$$// p')
65 $(call debian_check_files_tmp,%): $(truename)
70 md5sums="$$(dpkg-query --control-path $(package) md5sums 2>/dev/null)" || \
71 md5sums=/var/lib/dpkg/info/$(package).md5sums; \
72 md5=$$(dpkg-query --showformat='$${Conffiles}\n' --show $(package) | \
73 sed -n 's,^ $(name) \([0-9a-f]*\)$$,\1 $@, p'); \
74 if [ -n "$$md5" ]; then \
75 echo "$$md5" | md5sum -c; \
76 elif [ -e "$$md5sums" ]; then \
77 md5=$$(sed -n 's,^\([0-9a-f]*\) $(patsubst /%,%,$(name))$$,\1 $@, p' \
79 [ -n "$$md5" ] && echo "$$md5" | md5sum -c; \
81 echo "config-package-dev: warning: $(package) does not include md5sums!"; \
82 echo "config-package-dev: warning: md5sum for $(name) not verified."; \
86 rm -rf $(DEB_CHECK_FILES_TMPDIR)