| 1 | # -*- mode: makefile; coding: utf-8 -*- |
| 2 | # Copyright © 2007-2008 Anders Kaseorg <andersk@mit.edu> and |
| 3 | # Tim Abbott <tabbott@mit.edu> |
| 4 | # |
| 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. |
| 9 | # |
| 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. |
| 14 | # |
| 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 |
| 18 | # 02111-1307 USA. |
| 19 | |
| 20 | # Don't include check-files.mk in your rules files directly; instead |
| 21 | # use config-package.mk. |
| 22 | |
| 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: |
| 26 | # |
| 27 | # $(call debian_check_files,filename) |
| 28 | # |
| 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. |
| 33 | |
| 34 | ifndef _cdbs_rules_check_files |
| 35 | _cdbs_rules_check_files = 1 |
| 36 | |
| 37 | include /usr/share/cdbs/1/rules/displace.mk |
| 38 | |
| 39 | DEB_CHECK_FILES_TMPDIR = debian/check_file_copies |
| 40 | |
| 41 | debian_check_files_source = $(if $(DEB_CHECK_FILES_SOURCE_$(1)),$(DEB_CHECK_FILES_SOURCE_$(1)),$(call displace_files_replace_name,$(1))) |
| 42 | |
| 43 | debian_check_files = $(patsubst %,$(DEB_CHECK_FILES_TMPDIR)%,$(1)) |
| 44 | undebian_check_files = $(patsubst $(DEB_CHECK_FILES_TMPDIR)%,%,$(1)) |
| 45 | |
| 46 | debian_check_files_tmp = $(patsubst %,%.tmp,$(call debian_check_files,$(1))) |
| 47 | undebian_check_files_tmp = $(call undebian_check_files,$(patsubst %.tmp,%,$(1))) |
| 48 | |
| 49 | # We need a level of indirection here in order to make sure that |
| 50 | # normal makefile targets, like "clean", are not affected by the |
| 51 | # debian_check_files rules. |
| 52 | $(call debian_check_files,%): $(call debian_check_files_tmp,%) |
| 53 | mv $< $@ |
| 54 | |
| 55 | # We check md5sums from both /var/lib/dpkg/info/$(package).md5sums |
| 56 | # (the md5sums database for non-conffiles) and the conffiles database |
| 57 | # used for prompting about conffiles being changed (via dpkg-query). |
| 58 | # |
| 59 | # There is some wrangling here because the formats of these sources differ. |
| 60 | $(call debian_check_files_tmp,%): target = $(call undebian_check_files_tmp,$@) |
| 61 | $(call debian_check_files_tmp,%): name = $(call debian_check_files_source,$(target)) |
| 62 | $(call debian_check_files_tmp,%): truename = $(shell dpkg-divert --truename $(name)) |
| 63 | $(call debian_check_files_tmp,%): package = $(shell LC_ALL=C dpkg -S $(name) | sed -n '/^diversion by /! s/: .*$$// p') |
| 64 | $(call debian_check_files_tmp,%): $(truename) |
| 65 | [ -n "$(package)" ] |
| 66 | mkdir -p $(@D) |
| 67 | cp "$(truename)" $@ |
| 68 | set -e; \ |
| 69 | md5sums="$$(dpkg-query --control-path $(package) md5sums 2>/dev/null)" || \ |
| 70 | md5sums=/var/lib/dpkg/info/$(package).md5sums; \ |
| 71 | md5=$$(dpkg-query --showformat='$${Conffiles}\n' --show $(package) | \ |
| 72 | sed -n 's,^ $(name) \([0-9a-f]*\)$$,\1 $@, p'); \ |
| 73 | if [ -n "$$md5" ]; then \ |
| 74 | echo "$$md5" | md5sum -c; \ |
| 75 | elif [ -e "$$md5sums" ]; then \ |
| 76 | md5=$$(sed -n 's,^\([0-9a-f]*\) $(patsubst /%,%,$(name))$$,\1 $@, p' \ |
| 77 | "$$md5sums"); \ |
| 78 | [ -n "$$md5" ] && echo "$$md5" | md5sum -c; \ |
| 79 | else \ |
| 80 | echo "config-package-dev: warning: $(package) does not include md5sums!"; \ |
| 81 | echo "config-package-dev: warning: md5sum for $(name) not verified."; \ |
| 82 | fi |
| 83 | |
| 84 | clean:: |
| 85 | rm -rf $(DEB_CHECK_FILES_TMPDIR) |
| 86 | |
| 87 | endif |