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1 # Name and version, every module should have this.
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2
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3 policy_module(google_authenticator, 0.0.1)
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4
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5
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6 # List of the types, class and everything else you are going to use in
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7 # your module that is not defined in this .te file. If you are getting
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8 # any errors when you compile your module that it is unable to find a
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9 # type, you probably forgot to declare it here.
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10
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11 require {
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12 type sshd_t;
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13 type user_home_dir_t;
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14 type admin_home_t;
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15 }
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16
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17
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18 # This is where we define our type. A good practise is to append _t for
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19 # all types. This is the type we are going to give our
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20 # .google_authenticator file.
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21
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22 type google_authenticator_t;
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23
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24
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25 # What role our type should have. This is almost always going to be
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26 # object_r
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27
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28 role object_r types google_authenticator_t;
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29
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30
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31 # What sshd_t (the context the ssh daemon runs as) should be able to do
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32 # with our type (google_authenticator_t), as a file. rename, create and
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33 # unlink are base definitions, rw_file_perms is a set of rules. The
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34 # rw_file_perms group is defined in
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35 # /usr/share/selinux/devel/include/support/obj_perm_sets.spt with a lot
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36 # of other groups. Reading this files give you a good overview of what
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37 # they allow.
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38
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39 allow sshd_t google_authenticator_t:file { rename create unlink rw_file_perms };
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40
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41
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42 # Without this, SELinux will be way too strict as default, as it won't
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43 # know what this type really is. Remember that SELinux doesn’t only
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44 # deal with files, but sockets and other filetypes as well. Leaving
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45 # this out will still allow sshd_t to do its stuff, but you, in your
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46 # shell will see a weird file. The only thing you will see is the file
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47 # name. Even permissions will be hidden from you. (a fun trick to pull
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48 # on your friends.. :] ) An overview of this is located at
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49 # http://oss.tresys.com/docs/refpolicy/api/kernel_files.html.
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50
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51 files_type(google_authenticator_t)
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52
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53
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54 # re-label newly created files on the fly
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55
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56 filetrans_pattern(sshd_t, user_home_dir_t, google_authenticator_t, file, ".google_authenticator")
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57 filetrans_pattern(sshd_t, user_home_dir_t, google_authenticator_t, file, ".google_authenticator~")
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58 filetrans_pattern(sshd_t, admin_home_t, google_authenticator_t, file, ".google_authenticator")
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59 filetrans_pattern(sshd_t, admin_home_t, google_authenticator_t, file, ".google_authenticator~")
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