1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY sudo-download-http "http://www.courtesan.com/sudo/dist/sudo-&sudo-version;.tar.gz">
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8 | <!ENTITY sudo-download-ftp " ">
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9 | <!ENTITY sudo-md5sum "b29893c06192df6230dd5f340f3badf5">
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10 | <!ENTITY sudo-size "576 KB">
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11 | <!ENTITY sudo-buildsize "3.6 MB">
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12 | <!ENTITY sudo-time "less than 0.1 SBU">
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13 | ]>
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14 |
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15 | <sect1 id="sudo" xreflabel="sudo-&sudo-version;">
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16 | <?dbhtml filename="sudo.html"?>
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17 |
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18 | <sect1info>
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19 | <othername>$LastChangedBy: $</othername>
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20 | <date>$Date: $</date>
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21 | </sect1info>
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22 |
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23 | <title>Sudo-&sudo-version;</title>
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24 |
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25 | <indexterm zone="sudo">
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26 | <primary sortas="a-sudo">sudo</primary>
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27 | </indexterm>
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28 |
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29 | <sect2 role="package">
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30 | <title>Introduction to Sudo</title>
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31 |
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32 | <para>The <application>sudo</application> package allows a system
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33 | administrator to give certain users (or groups of users) the ability to run
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34 | some (or all) commands as root or another user while logging the commands
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35 | and arguments.</para>
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36 |
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37 | <bridgehead renderas="sect3">Package Information</bridgehead>
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38 | <itemizedlist spacing="compact">
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39 | <listitem>
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40 | <para>Download (HTTP): <ulink url="&sudo-download-http;"/></para>
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41 | </listitem>
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42 | <listitem>
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43 | <para>Download (FTP): <ulink url="&sudo-download-ftp;"/></para>
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44 | </listitem>
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45 | <listitem>
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46 | <para>Download MD5 sum: &sudo-md5sum;</para>
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47 | </listitem>
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48 | <listitem>
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49 | <para>Download size: &sudo-size;</para>
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50 | </listitem>
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51 | <listitem>
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52 | <para>Estimated disk space required: &sudo-buildsize;</para>
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53 | </listitem>
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54 | <listitem>
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55 | <para>Estimated build time: &sudo-time;</para>
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56 | </listitem>
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57 | </itemizedlist>
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58 |
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59 | <!--
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60 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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61 | <itemizedlist spacing='compact'>
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62 | <listitem>
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63 | <para>Required patch: <ulink
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64 | url="&patch-root;/sudo-&sudo-version;-xxxx-1.patch"/></para>
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65 | </listitem>
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66 | </itemizedlist>
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67 | <bridgehead renderas="sect3">Sudo Dependencies</bridgehead>
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68 |
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69 | <bridgehead renderas="sect4">Optional</bridgehead>
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70 |
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71 |
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72 | -->
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73 | </sect2>
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74 |
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75 | <sect2 role="installation">
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76 | <title>Installation of Sudo</title>
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77 |
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78 | <para>Install <application>sudo</application> by running
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79 | the following commands:</para>
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80 |
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81 | <screen><userinput>sed -i -e 's/CDPATH",/&\n "SHELLOPTS",\n "PS4",/' env.c
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82 | ./configure --prefix=/usr --libexecdir=/usr/lib \
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83 | --enable-noargs-shell --with-ignore-dot --with-all-insults \
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84 | --enable-shell-sets-home &&
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85 | make</userinput></screen>
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86 |
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87 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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88 |
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89 | <screen role="root"><userinput>make install</userinput></screen>
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90 |
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91 | </sect2>
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92 |
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93 | <sect2 role="commands">
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94 | <title>Command Explanations</title>
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95 |
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96 | <para><command>sed -i -e 's/CDPATH",/&\n "SHELLOPTS",\n "PS4",/'
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97 | env.c</command>: This command adds two envronment variables to a list of
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98 | variables to be excluded from the target environment. It solves a
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99 | security problem.</para>
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100 |
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101 | <para><option>--enable-noargs-shell</option>: This switch allows sudo to
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102 | run a shell if involked with no arguments.</para>
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103 |
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104 | <para><option>--with-ignore-dot</option>: This switch causes
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105 | <application>sudo</application> to ignore '.' in the PATH.</para>
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106 |
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107 | <para><option>--with-all-insults</option>: This switch includes all the
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108 | sudo insult sets.</para>
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109 |
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110 | <para><option>--enable-shell-sets-home</option>: This switch sets HOME to
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111 | the target user in shell mode.</para>
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112 |
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113 | <note><para>There are many options to <application>sudo</application>'s
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114 | configure command. Check the <command>configure --help</command> output
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115 | for a complete list.</para></note>
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116 |
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117 | </sect2>
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118 |
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119 | <sect2 role="configuration">
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120 | <title>Configuring Sudo</title>
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121 |
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122 | <sect3 id="sudo-config">
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123 | <title>Config File</title>
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124 |
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125 | <para><filename>/etc/sudoers</filename></para>
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126 |
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127 | <indexterm zone="sudo sudo-config">
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128 | <primary sortas="e-etc-sudoers">/etc/sudoers</primary>
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129 | </indexterm>
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130 |
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131 | </sect3>
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132 |
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133 | <sect3>
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134 | <title>Configuration Information</title>
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135 |
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136 | <para>The <filename>sudoers</filename> file can be quite complicated. It
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137 | is composed of two types of entries: aliases (basically variables) and
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138 | user specifications (which specify who may run what). The installation
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139 | installs a default configuration that has no privileges installed for any
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140 | user.</para>
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141 |
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142 | <para>One example usage is to allow the system administrator to execute
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143 | any program without typing a password each time root privileges are
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144 | needed. This can be configured as:</para>
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145 |
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146 | <screen># User alias specification
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147 | User_Alias ADMIN = YourLoginId
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148 |
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149 | # Allow people in group ADMIN to run all commands without a password
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150 | ADMIN ALL = NOPASSWD: ALL</screen>
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151 |
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152 | <para>For details, see <command>man sudoers</command>.</para>
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153 |
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154 | </sect3>
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155 |
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156 | </sect2>
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157 |
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158 | <sect2 role="content">
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159 | <title>Contents</title>
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160 |
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161 | <segmentedlist>
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162 | <segtitle>Installed Programs</segtitle>
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163 | <segtitle>Installed Library</segtitle>
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164 | <segtitle>Installed Directories</segtitle>
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165 |
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166 | <seglistitem>
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167 | <seg>sudo and sudoedit</seg>
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168 | <seg>sudo_noexec.so</seg>
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169 | <seg>None</seg>
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170 | </seglistitem>
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171 | </segmentedlist>
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172 |
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173 | <variablelist>
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174 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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175 | <?dbfo list-presentation="list"?>
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176 | <?dbhtml list-presentation="table"?>
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177 |
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178 | <varlistentry id="sudo_prog">
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179 | <term><command>sudo</command></term>
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180 | <listitem>
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181 | <para>executes a command as another user as permitted by
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182 | the <filename>/etc/sudoers</filename> confiuration file.
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183 | </para>
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184 | <indexterm zone="sudo sudo">
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185 | <primary sortas="b-sudo">sudo</primary>
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186 | </indexterm>
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187 | </listitem>
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188 | </varlistentry>
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189 |
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190 | <varlistentry id="sudoedit">
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191 | <term><command>sudoedit</command></term>
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192 | <listitem>
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193 | <para>is a hard link to <command>sudo</command> that implies
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194 | the -e option to invoke an editor as another user.</para>
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195 | <indexterm zone="sudo sudoedit">
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196 | <primary sortas="b-sudoedit">sudoedit</primary>
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197 | </indexterm>
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198 | </listitem>
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199 | </varlistentry>
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200 |
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201 | <varlistentry id="sudo_noexec">
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202 | <term><filename class='libraryfile'>sudo_noexec.so</filename></term>
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203 | <listitem>
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204 | <para>enables support for the "noexec" functionality which prevents
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205 | a dynamically-linked program being run by sudo from executing
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206 | another program (think shell escapes).</para>
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207 | <indexterm zone="sudo sudo_noexec">
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208 | <primary sortas="c-sudo_noexec">sudo_noexec.so</primary>
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209 | </indexterm>
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210 | </listitem>
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211 | </varlistentry>
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212 |
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213 | </variablelist>
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214 |
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215 | </sect2>
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216 |
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217 | </sect1>
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