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ab8e2a67 TA |
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 | ||
56709134 TA |
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 | ||
ab8e2a67 TA |
34 | ifndef _cdbs_rules_check_files |
35 | _cdbs_rules_check_files = 1 | |
36 | ||
37 | include /usr/share/cdbs/1/rules/divert.mk | |
38 | ||
56709134 | 39 | DEB_CHECK_FILES_TMPDIR = debian/check_file_copies |
ab8e2a67 | 40 | |
6f127cbc | 41 | debian_check_files_source = $(if $(DEB_CHECK_FILES_SOURCE_$(1)),$(DEB_CHECK_FILES_SOURCE_$(1)),$(call divert_files_replace_name,$(1))) |
ab8e2a67 | 42 | |
56709134 TA |
43 | debian_check_files = $(patsubst %,$(DEB_CHECK_FILES_TMPDIR)%,$(1)) |
44 | undebian_check_files = $(patsubst $(DEB_CHECK_FILES_TMPDIR)%,%,$(1)) | |
ab8e2a67 TA |
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 | ||
56709134 TA |
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. | |
ab8e2a67 TA |
52 | $(call debian_check_files,%): $(call debian_check_files_tmp,%) |
53 | mv $< $@ | |
54 | ||
56709134 TA |
55 | # We check md5sums from both /var/lib/dpkg/info/$(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. | |
ab8e2a67 | 60 | $(call debian_check_files_tmp,%): target = $(call undebian_check_files_tmp,$@) |
6f127cbc | 61 | $(call debian_check_files_tmp,%): name = $(call debian_check_files_source,$(target)) |
ab8e2a67 | 62 | $(call debian_check_files_tmp,%): truename = $(shell /usr/sbin/dpkg-divert --truename $(name)) |
dd49a2d5 | 63 | $(call debian_check_files_tmp,%): package = $(shell LC_ALL=C dpkg -S $(name) | sed -n '/^diversion by /! s/: .*$$// p') |
ab8e2a67 | 64 | $(call debian_check_files_tmp,%): $(truename) |
50bf7563 | 65 | [ -n "$(package)" ] |
ab8e2a67 TA |
66 | mkdir -p $(@D) |
67 | cp "$(truename)" $@ | |
3aab360a | 68 | set -e; \ |
262d88c4 AK |
69 | md5sums="$$(dpkg-query --control-path $(package) md5sums 2>/dev/null)" || \ |
70 | md5sums=/var/lib/dpkg/info/$(package).md5sums; \ | |
ab8e2a67 TA |
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 "$$md5" | md5sum -c; \ | |
262d88c4 | 75 | elif [ -e "$$md5sums" ]; then \ |
ab8e2a67 | 76 | md5=$$(sed -n 's,^\([0-9a-f]*\) $(patsubst /%,%,$(name))$$,\1 $@, p' \ |
262d88c4 | 77 | "$$md5sums"); \ |
ab8e2a67 TA |
78 | [ -n "$$md5" ] && echo "$$md5" | md5sum -c; \ |
79 | else \ | |
56709134 TA |
80 | echo "config-package-dev: warning: $(package) does not include md5sums!"; \ |
81 | echo "config-package-dev: warning: md5sum for $(name) not verified."; \ | |
ab8e2a67 TA |
82 | fi |
83 | ||
84 | clean:: | |
56709134 | 85 | rm -rf $(DEB_CHECK_FILES_TMPDIR) |
ab8e2a67 TA |
86 | |
87 | endif |