1 | # -*- mode: makefile; coding: utf-8 -*- |
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2 | # Copyright © 2007-2008 Anders Kaseorg <andersk@mit.edu> and |
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3 | # Tim Abbott <tabbott@mit.edu> |
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4 | # |
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5 | # This program is free software; you can redistribute it and/or |
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6 | # modify it under the terms of the GNU General Public License as |
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7 | # published by the Free Software Foundation; either version 2, or (at |
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8 | # your option) any later version. |
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9 | # |
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10 | # This program is distributed in the hope that it will be useful, but |
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11 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | # General Public License for more details. |
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14 | # |
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15 | # You should have received a copy of the GNU General Public License |
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16 | # along with this program; if not, write to the Free Software |
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17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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18 | # 02111-1307 USA. |
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19 | |
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20 | # Don't include check-files.mk in your rules files directly; instead |
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21 | # use config-package.mk. |
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22 | |
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23 | # check-files.mk is used to verify that files on local disk have not |
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24 | # been modified from the upstream packaged version. Its only API |
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25 | # function is adding the following function as a dependency: |
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26 | # |
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27 | # $(call debian_check_files,filename) |
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28 | # |
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29 | # Returns the path to a copy of filename that is verified to be |
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30 | # unmodified from the version shipped by the distribution (by checking |
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31 | # md5sums). The function causes the package to fail to build if the |
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32 | # relevant configuration file has been modified on the build machine. |
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33 | |
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34 | ifndef _cdbs_rules_check_files |
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35 | _cdbs_rules_check_files = 1 |
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36 | |
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37 | include /usr/share/cdbs/1/rules/divert.mk |
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38 | |
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39 | DEB_CHECK_FILES_TMPDIR = debian/check_file_copies |
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40 | |
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41 | debian_check_files_source = $(if $(DEB_CHECK_FILES_SOURCE_$(1)),$(DEB_CHECK_FILES_SOURCE_$(1)),$(1)) |
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42 | debian_check_files_check = $(call divert_files_replace_name,$(call debian_check_files_source,$(1))) |
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43 | |
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44 | debian_check_files = $(patsubst %,$(DEB_CHECK_FILES_TMPDIR)%,$(1)) |
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45 | undebian_check_files = $(patsubst $(DEB_CHECK_FILES_TMPDIR)%,%,$(1)) |
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46 | |
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47 | debian_check_files_tmp = $(patsubst %,%.tmp,$(call debian_check_files,$(1))) |
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48 | undebian_check_files_tmp = $(call undebian_check_files,$(patsubst %.tmp,%,$(1))) |
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49 | |
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50 | # We need a level of indirection here in order to make sure that |
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51 | # normal makefile targets, like "clean", are not affected by the |
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52 | # debian_check_files rules. |
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53 | $(call debian_check_files,%): $(call debian_check_files_tmp,%) |
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54 | mv $< $@ |
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55 | |
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56 | # We check md5sums from both /var/lib/dpkg/info/$(package).md5sums |
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57 | # (the md5sums database for non-conffiles) and the conffiles database |
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58 | # used for prompting about conffiles being changed (via dpkg-query). |
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59 | # |
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60 | # There is some wrangling here because the formats of these sources differ. |
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61 | $(call debian_check_files_tmp,%): target = $(call undebian_check_files_tmp,$@) |
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62 | $(call debian_check_files_tmp,%): name = $(call debian_check_files_check,$(target)) |
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63 | $(call debian_check_files_tmp,%): truename = $(shell /usr/sbin/dpkg-divert --truename $(name)) |
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64 | $(call debian_check_files_tmp,%): package = $(shell LC_ALL=C dpkg -S $(name) | sed -n '/^diversion by /! s/: .*$$// p') |
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65 | $(call debian_check_files_tmp,%): $(truename) |
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66 | [ -n "$(package)" ] |
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67 | mkdir -p $(@D) |
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68 | cp "$(truename)" $@ |
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69 | set -e; \ |
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70 | md5sums="$$(dpkg-query --control-path $(package) md5sums 2>/dev/null)" || \ |
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71 | md5sums=/var/lib/dpkg/info/$(package).md5sums; \ |
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72 | md5=$$(dpkg-query --showformat='$${Conffiles}\n' --show $(package) | \ |
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73 | sed -n 's,^ $(name) \([0-9a-f]*\)$$,\1 $@, p'); \ |
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74 | if [ -n "$$md5" ]; then \ |
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75 | echo "$$md5" | md5sum -c; \ |
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76 | elif [ -e "$$md5sums" ]; then \ |
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77 | md5=$$(sed -n 's,^\([0-9a-f]*\) $(patsubst /%,%,$(name))$$,\1 $@, p' \ |
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78 | "$$md5sums"); \ |
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79 | [ -n "$$md5" ] && echo "$$md5" | md5sum -c; \ |
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80 | else \ |
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81 | echo "config-package-dev: warning: $(package) does not include md5sums!"; \ |
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82 | echo "config-package-dev: warning: md5sum for $(name) not verified."; \ |
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83 | fi |
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84 | |
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85 | clean:: |
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86 | rm -rf $(DEB_CHECK_FILES_TMPDIR) |
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87 | |
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88 | endif |
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