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  <h1>Source code for pylorax.api.config</h1><div class="highlight"><pre>
<span></span><span class="c1">#</span>
<span class="c1"># Copyright (C) 2017  Red Hat, Inc.</span>
<span class="c1">#</span>
<span class="c1"># This program is free software; you can redistribute it and/or modify</span>
<span class="c1"># it under the terms of the GNU General Public License as published by</span>
<span class="c1"># the Free Software Foundation; either version 2 of the License, or</span>
<span class="c1"># (at your option) any later version.</span>
<span class="c1">#</span>
<span class="c1"># This program is distributed in the hope that it will be useful,</span>
<span class="c1"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="c1"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<span class="c1"># GNU General Public License for more details.</span>
<span class="c1">#</span>
<span class="c1"># You should have received a copy of the GNU General Public License</span>
<span class="c1"># along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<span class="c1">#</span>
<span class="kn">import</span> <span class="nn">configparser</span>
<span class="kn">import</span> <span class="nn">grp</span>
<span class="kn">import</span> <span class="nn">os</span>

<span class="kn">from</span> <span class="nn">pylorax.sysutils</span> <span class="k">import</span> <span class="n">joinpaths</span>

<div class="viewcode-block" id="ComposerConfig"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.config.ComposerConfig">[docs]</a><span class="k">class</span> <span class="nc">ComposerConfig</span><span class="p">(</span><span class="n">configparser</span><span class="o">.</span><span class="n">SafeConfigParser</span><span class="p">):</span>
<div class="viewcode-block" id="ComposerConfig.get_default"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.config.ComposerConfig.get_default">[docs]</a>    <span class="k">def</span> <span class="nf">get_default</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">section</span><span class="p">,</span> <span class="n">option</span><span class="p">,</span> <span class="n">default</span><span class="p">):</span>
        <span class="k">try</span><span class="p">:</span>
            <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">section</span><span class="p">,</span> <span class="n">option</span><span class="p">)</span>
        <span class="k">except</span> <span class="n">configparser</span><span class="o">.</span><span class="n">Error</span><span class="p">:</span>
            <span class="k">return</span> <span class="n">default</span></div></div>


<div class="viewcode-block" id="configure"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.config.configure">[docs]</a><span class="k">def</span> <span class="nf">configure</span><span class="p">(</span><span class="n">conf_file</span><span class="o">=</span><span class="s2">&quot;/etc/lorax/composer.conf&quot;</span><span class="p">,</span> <span class="n">root_dir</span><span class="o">=</span><span class="s2">&quot;/&quot;</span><span class="p">,</span> <span class="n">test_config</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;lorax-composer configuration</span>

<span class="sd">    :param conf_file: Path to the config file overriding the default settings</span>
<span class="sd">    :type conf_file: str</span>
<span class="sd">    :param root_dir: Directory to prepend to paths, defaults to /</span>
<span class="sd">    :type root_dir: str</span>
<span class="sd">    :param test_config: Set to True to skip reading conf_file</span>
<span class="sd">    :type test_config: bool</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="n">conf</span> <span class="o">=</span> <span class="n">ComposerConfig</span><span class="p">()</span>

    <span class="c1"># set defaults</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">add_section</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">)</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;share_dir&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/usr/share/lorax/&quot;</span><span class="p">)))</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;lib_dir&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/var/lib/lorax/composer/&quot;</span><span class="p">)))</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;repo_dir&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/var/lib/lorax/composer/repos.d/&quot;</span><span class="p">)))</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;dnf_conf&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/var/tmp/composer/dnf.conf&quot;</span><span class="p">)))</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;dnf_root&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/var/tmp/composer/dnf/root/&quot;</span><span class="p">)))</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;cache_dir&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/var/tmp/composer/cache/&quot;</span><span class="p">)))</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;tmp&quot;</span><span class="p">,</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">joinpaths</span><span class="p">(</span><span class="n">root_dir</span><span class="p">,</span> <span class="s2">&quot;/var/tmp/&quot;</span><span class="p">)))</span>

    <span class="n">conf</span><span class="o">.</span><span class="n">add_section</span><span class="p">(</span><span class="s2">&quot;users&quot;</span><span class="p">)</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;users&quot;</span><span class="p">,</span> <span class="s2">&quot;root&quot;</span><span class="p">,</span> <span class="s2">&quot;1&quot;</span><span class="p">)</span>

    <span class="c1"># Enable all available repo files by default</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">add_section</span><span class="p">(</span><span class="s2">&quot;repos&quot;</span><span class="p">)</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;repos&quot;</span><span class="p">,</span> <span class="s2">&quot;use_system_repos&quot;</span><span class="p">,</span> <span class="s2">&quot;1&quot;</span><span class="p">)</span>
    <span class="n">conf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">&quot;repos&quot;</span><span class="p">,</span> <span class="s2">&quot;enabled&quot;</span><span class="p">,</span> <span class="s2">&quot;*&quot;</span><span class="p">)</span>

    <span class="n">conf</span><span class="o">.</span><span class="n">add_section</span><span class="p">(</span><span class="s2">&quot;dnf&quot;</span><span class="p">)</span>

    <span class="k">if</span> <span class="ow">not</span> <span class="n">test_config</span><span class="p">:</span>
        <span class="c1"># read the config file</span>
        <span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">conf_file</span><span class="p">):</span>
            <span class="n">conf</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="n">conf_file</span><span class="p">)</span>

    <span class="k">return</span> <span class="n">conf</span></div>

<div class="viewcode-block" id="make_dnf_dirs"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.config.make_dnf_dirs">[docs]</a><span class="k">def</span> <span class="nf">make_dnf_dirs</span><span class="p">(</span><span class="n">conf</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Make any missing dnf directories</span>

<span class="sd">    :param conf: The configuration to use</span>
<span class="sd">    :type conf: ComposerConfig</span>
<span class="sd">    :returns: None</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">&quot;dnf_conf&quot;</span><span class="p">,</span> <span class="s2">&quot;repo_dir&quot;</span><span class="p">,</span> <span class="s2">&quot;cache_dir&quot;</span><span class="p">,</span> <span class="s2">&quot;dnf_root&quot;</span><span class="p">]:</span>
        <span class="n">p_dir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">abspath</span><span class="p">(</span><span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="n">p</span><span class="p">))</span>
        <span class="k">if</span> <span class="n">p</span> <span class="o">==</span> <span class="s2">&quot;dnf_conf&quot;</span><span class="p">:</span>
            <span class="n">p_dir</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">p_dir</span><span class="p">)</span>

        <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">p_dir</span><span class="p">):</span>
            <span class="n">os</span><span class="o">.</span><span class="n">makedirs</span><span class="p">(</span><span class="n">p_dir</span><span class="p">)</span></div>

<div class="viewcode-block" id="make_queue_dirs"><a class="viewcode-back" href="../../../pylorax.api.html#pylorax.api.config.make_queue_dirs">[docs]</a><span class="k">def</span> <span class="nf">make_queue_dirs</span><span class="p">(</span><span class="n">conf</span><span class="p">,</span> <span class="n">gid</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Make any missing queue directories</span>

<span class="sd">    :param conf: The configuration to use</span>
<span class="sd">    :type conf: ComposerConfig</span>
<span class="sd">    :param gid: Group ID that has access to the queue directories</span>
<span class="sd">    :type gid: int</span>
<span class="sd">    :returns: list of errors</span>
<span class="sd">    :rtype: list of str</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="n">errors</span> <span class="o">=</span> <span class="p">[]</span>
    <span class="n">lib_dir</span> <span class="o">=</span> <span class="n">conf</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;composer&quot;</span><span class="p">,</span> <span class="s2">&quot;lib_dir&quot;</span><span class="p">)</span>
    <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">&quot;queue/run&quot;</span><span class="p">,</span> <span class="s2">&quot;queue/new&quot;</span><span class="p">,</span> <span class="s2">&quot;results&quot;</span><span class="p">]:</span>
        <span class="n">p_dir</span> <span class="o">=</span> <span class="n">joinpaths</span><span class="p">(</span><span class="n">lib_dir</span><span class="p">,</span> <span class="n">p</span><span class="p">)</span>
        <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">p_dir</span><span class="p">):</span>
            <span class="n">orig_umask</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">umask</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
            <span class="n">os</span><span class="o">.</span><span class="n">makedirs</span><span class="p">(</span><span class="n">p_dir</span><span class="p">,</span> <span class="mo">0o771</span><span class="p">)</span>
            <span class="n">os</span><span class="o">.</span><span class="n">chown</span><span class="p">(</span><span class="n">p_dir</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">gid</span><span class="p">)</span>
            <span class="n">os</span><span class="o">.</span><span class="n">umask</span><span class="p">(</span><span class="n">orig_umask</span><span class="p">)</span>
        <span class="k">else</span><span class="p">:</span>
            <span class="n">p_stat</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">stat</span><span class="p">(</span><span class="n">p_dir</span><span class="p">)</span>
            <span class="k">if</span> <span class="n">p_stat</span><span class="o">.</span><span class="n">st_mode</span> <span class="o">&amp;</span> <span class="mo">0o006</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
                <span class="n">errors</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;Incorrect permissions on </span><span class="si">%s</span><span class="s2">, no o+rw permissions are allowed.&quot;</span> <span class="o">%</span> <span class="n">p_dir</span><span class="p">)</span>

            <span class="k">if</span> <span class="n">p_stat</span><span class="o">.</span><span class="n">st_gid</span> <span class="o">!=</span> <span class="n">gid</span> <span class="ow">or</span> <span class="n">p_stat</span><span class="o">.</span><span class="n">st_uid</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
                <span class="n">gr_name</span> <span class="o">=</span> <span class="n">grp</span><span class="o">.</span><span class="n">getgrgid</span><span class="p">(</span><span class="n">gid</span><span class="p">)</span><span class="o">.</span><span class="n">gr_name</span>
                <span class="n">errors</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;</span><span class="si">%s</span><span class="s2"> should be owned by root:</span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">p_dir</span><span class="p">,</span> <span class="n">gr_name</span><span class="p">))</span>

    <span class="k">return</span> <span class="n">errors</span></div>
</pre></div>

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