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1 #!/usr/bin/env perl
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2
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3
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4 #this is the root of the package users' homes
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5 $pkg_home_root = "/pkg";
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6
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7
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8 if ($ARGV[0] eq "--help"){
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9 print <<"HERE";
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10
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11 pkg -- create a package user.
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12
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13 syntax:
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14 pkg package-name description
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15 pkg --help
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16
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17 Create a package user for the purpose of compiling
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18 a particular package.
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19
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20 The user will be created with user and group both
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21 equal to the name you specify.
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22
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23 You will then be put into the user's home
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24 directory where you may proceed with
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25 compiling/installing the package.
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26
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27 If the user already exists, this is equivalent to
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28 su --login package-name
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29
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30 Written by Robert McIntyre. This software is free
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31 software and is released to the public domain.
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32
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33 HERE
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34 exit 0;
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35 }
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36 $" = " ";
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37
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38 $pkg_name = $ARGV[0];
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39
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40 $pkg_desc = $ARGV[1];
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41
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42 # Validate pkg_user as a user name.
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43 if (!($pkg_name =~ m/^[a-z_][a-z0-9_-]*\$?$/)){
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44 print "$pkg_name is not a valid user name!\n";
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45 exit 1;
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46 }
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47
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48 # Validate description.
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49 if ($pkg_desc =~ m/:/){
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50 print "Package Description cannot contain \":\"\n";
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51 exit 1;
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52 }
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53
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54
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55 $pkg_home = "$pkg_home_root/$pkg_name";
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56
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57 #set default for $pkg_desc.
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58 if (!($pkg_desc)){$pkg_desc = $pkg_name;}
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59
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60 @pkg_switch_cmd = ("su", "--login", $pkg_name);
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61
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62 @pkg_create_cmd =
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63 ("useradd", "-c", $pkg_desc, "-d", $pkg_home,
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64 "-g", $pkg_name, "-s", "/bin/bash",
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65 $pkg_name);
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66
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67 @pkg_create_group_cmd =
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68 ("groupadd", "--force", $pkg_name);
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69
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70 @pkg_create_home_cmd =
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71 ("install", "-d", "-g", $pkg_name, "-o", $pkg_name, "-m", "700", $pkg_home);
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72
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73 sub execute{print "@_\n"; system(@_) and die $!;}
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74
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75 #determine if the user already exists:
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76 `id $pkg_name 2>/dev/null`;
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77 if (!$?){execute(@pkg_switch_cmd); exit 0;}
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78
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79 print "Creating package group.\n";
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80 execute(@pkg_create_group_cmd);
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81
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82 print "Creating package user.\n";
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83 execute(@pkg_create_cmd);
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84
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85 print "Create home directory for $pkg_name.\n";
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86 execute(@pkg_create_home_cmd);
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87
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88 print "Change user.\n";
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89 execute(@pkg_switch_cmd);
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90
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91
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92
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93
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94
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95
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96
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