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<span class="text">Coverage for </span><b>src/debputy/elf_util.py</b>:
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<p class="run"><span class="n"><a id="t1" href="#t1">1</a></span><span class="t"><span class="key">import</span> <span class="nam">io</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t2" href="#t2">2</a></span><span class="t"><span class="key">import</span> <span class="nam">os</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t3" href="#t3">3</a></span><span class="t"><span class="key">import</span> <span class="nam">struct</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t4" href="#t4">4</a></span><span class="t"><span class="key">from</span> <span class="nam">typing</span> <span class="key">import</span> <span class="nam">List</span><span class="op">,</span> <span class="nam">Optional</span><span class="op">,</span> <span class="nam">Callable</span><span class="op">,</span> <span class="nam">Tuple</span><span class="op">,</span> <span class="nam">Iterable</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t5" href="#t5">5</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t6" href="#t6">6</a></span><span class="t"><span class="key">from</span> <span class="nam">debputy</span><span class="op">.</span><span class="nam">filesystem_scan</span> <span class="key">import</span> <span class="nam">FSPath</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t7" href="#t7">7</a></span><span class="t"><span class="key">from</span> <span class="nam">debputy</span><span class="op">.</span><span class="nam">plugin</span><span class="op">.</span><span class="nam">api</span> <span class="key">import</span> <span class="nam">VirtualPath</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t8" href="#t8">8</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t9" href="#t9">9</a></span><span class="t"><span class="nam">ELF_HEADER_SIZE32</span> <span class="op">=</span> <span class="num">136</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t10" href="#t10">10</a></span><span class="t"><span class="nam">ELF_HEADER_SIZE64</span> <span class="op">=</span> <span class="num">232</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t11" href="#t11">11</a></span><span class="t"><span class="nam">ELF_MAGIC</span> <span class="op">=</span> <span class="str">b"\x7fELF"</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t12" href="#t12">12</a></span><span class="t"><span class="nam">ELF_VERSION</span> <span class="op">=</span> <span class="num">0x00000001</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t13" href="#t13">13</a></span><span class="t"><span class="nam">ELF_ENDIAN_LE</span> <span class="op">=</span> <span class="num">0x01</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t14" href="#t14">14</a></span><span class="t"><span class="nam">ELF_ENDIAN_BE</span> <span class="op">=</span> <span class="num">0x02</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t15" href="#t15">15</a></span><span class="t"><span class="nam">ELF_TYPE_EXECUTABLE</span> <span class="op">=</span> <span class="num">0x0002</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t16" href="#t16">16</a></span><span class="t"><span class="nam">ELF_TYPE_SHARED_OBJECT</span> <span class="op">=</span> <span class="num">0x0003</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t17" href="#t17">17</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t18" href="#t18">18</a></span><span class="t"><span class="nam">ELF_LINKING_TYPE_ANY</span> <span class="op">=</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t19" href="#t19">19</a></span><span class="t"><span class="nam">ELF_LINKING_TYPE_DYNAMIC</span> <span class="op">=</span> <span class="key">True</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t20" href="#t20">20</a></span><span class="t"><span class="nam">ELF_LINKING_TYPE_STATIC</span> <span class="op">=</span> <span class="key">False</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t21" href="#t21">21</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t22" href="#t22">22</a></span><span class="t"><span class="nam">ELF_EI_ELFCLASS32</span> <span class="op">=</span> <span class="num">1</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t23" href="#t23">23</a></span><span class="t"><span class="nam">ELF_EI_ELFCLASS64</span> <span class="op">=</span> <span class="num">2</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t24" href="#t24">24</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t25" href="#t25">25</a></span><span class="t"><span class="nam">ELF_PT_DYNAMIC</span> <span class="op">=</span> <span class="num">2</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t26" href="#t26">26</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t27" href="#t27">27</a></span><span class="t"><span class="nam">ELF_EI_NIDENT</span> <span class="op">=</span> <span class="num">0x10</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t28" href="#t28">28</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t29" href="#t29">29</a></span><span class="t"><span class="com"># ELF header format:</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t30" href="#t30">30</a></span><span class="t"><span class="com"># typedef struct {</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t31" href="#t31">31</a></span><span class="t"><span class="com"># unsigned char e_ident[EI_NIDENT]; # <-- 16 / 0x10 bytes</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t32" href="#t32">32</a></span><span class="t"><span class="com"># uint16_t e_type;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t33" href="#t33">33</a></span><span class="t"><span class="com"># uint16_t e_machine;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t34" href="#t34">34</a></span><span class="t"><span class="com"># uint32_t e_version;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t35" href="#t35">35</a></span><span class="t"><span class="com"># ElfN_Addr e_entry;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t36" href="#t36">36</a></span><span class="t"><span class="com"># ElfN_Off e_phoff;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t37" href="#t37">37</a></span><span class="t"><span class="com"># ElfN_Off e_shoff;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t38" href="#t38">38</a></span><span class="t"><span class="com"># uint32_t e_flags;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t39" href="#t39">39</a></span><span class="t"><span class="com"># uint16_t e_ehsize;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t40" href="#t40">40</a></span><span class="t"><span class="com"># uint16_t e_phentsize;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t41" href="#t41">41</a></span><span class="t"><span class="com"># uint16_t e_phnum;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t42" href="#t42">42</a></span><span class="t"><span class="com"># uint16_t e_shentsize;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t43" href="#t43">43</a></span><span class="t"><span class="com"># uint16_t e_shnum;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t44" href="#t44">44</a></span><span class="t"><span class="com"># uint16_t e_shstrndx;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t45" href="#t45">45</a></span><span class="t"><span class="com"># } ElfN_Ehdr;</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t46" href="#t46">46</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t47" href="#t47">47</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t48" href="#t48">48</a></span><span class="t"><span class="key">class</span> <span class="nam">IncompleteFileError</span><span class="op">(</span><span class="nam">RuntimeError</span><span class="op">)</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t49" href="#t49">49</a></span><span class="t"> <span class="key">pass</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t50" href="#t50">50</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t51" href="#t51">51</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t52" href="#t52">52</a></span><span class="t"><span class="key">def</span> <span class="nam">is_so_or_exec_elf_file</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t53" href="#t53">53</a></span><span class="t"> <span class="nam">path</span><span class="op">:</span> <span class="nam">VirtualPath</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t54" href="#t54">54</a></span><span class="t"> <span class="op">*</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t55" href="#t55">55</a></span><span class="t"> <span class="nam">assert_linking_type</span><span class="op">:</span> <span class="nam">Optional</span><span class="op">[</span><span class="nam">bool</span><span class="op">]</span> <span class="op">=</span> <span class="nam">ELF_LINKING_TYPE_ANY</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t56" href="#t56">56</a></span><span class="t"><span class="op">)</span> <span class="op">-></span> <span class="nam">bool</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t57" href="#t57">57</a></span><span class="t"> <span class="nam">is_elf</span><span class="op">,</span> <span class="nam">linking_type</span> <span class="op">=</span> <span class="nam">_read_elf_file</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t58" href="#t58">58</a></span><span class="t"> <span class="nam">path</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t59" href="#t59">59</a></span><span class="t"> <span class="nam">determine_linking_type</span><span class="op">=</span><span class="nam">assert_linking_type</span> <span class="key">is</span> <span class="key">not</span> <span class="key">None</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t60" href="#t60">60</a></span><span class="t"> <span class="op">)</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t61" href="#t61">61</a></span><span class="t"> <span class="key">return</span> <span class="nam">is_elf</span> <span class="key">and</span> <span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t62" href="#t62">62</a></span><span class="t"> <span class="nam">assert_linking_type</span> <span class="key">is</span> <span class="nam">ELF_LINKING_TYPE_ANY</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t63" href="#t63">63</a></span><span class="t"> <span class="key">or</span> <span class="nam">assert_linking_type</span> <span class="op">==</span> <span class="nam">linking_type</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t64" href="#t64">64</a></span><span class="t"> <span class="op">)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t65" href="#t65">65</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t66" href="#t66">66</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t67" href="#t67">67</a></span><span class="t"><span class="key">def</span> <span class="nam">_read_elf_file</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t68" href="#t68">68</a></span><span class="t"> <span class="nam">path</span><span class="op">:</span> <span class="nam">VirtualPath</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t69" href="#t69">69</a></span><span class="t"> <span class="op">*</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t70" href="#t70">70</a></span><span class="t"> <span class="nam">determine_linking_type</span><span class="op">:</span> <span class="nam">bool</span> <span class="op">=</span> <span class="key">False</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t71" href="#t71">71</a></span><span class="t"><span class="op">)</span> <span class="op">-></span> <span class="nam">Tuple</span><span class="op">[</span><span class="nam">bool</span><span class="op">,</span> <span class="nam">Optional</span><span class="op">[</span><span class="nam">bool</span><span class="op">]</span><span class="op">]</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t72" href="#t72">72</a></span><span class="t"> <span class="nam">buffer_size</span> <span class="op">=</span> <span class="num">4096</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t73" href="#t73">73</a></span><span class="t"> <span class="nam">fd_buffer</span> <span class="op">=</span> <span class="nam">bytearray</span><span class="op">(</span><span class="nam">buffer_size</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t74" href="#t74">74</a></span><span class="t"> <span class="nam">linking_type</span> <span class="op">=</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t75" href="#t75">75</a></span><span class="t"> <span class="nam">fd</span><span class="op">:</span> <span class="nam">io</span><span class="op">.</span><span class="nam">BufferedReader</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t76" href="#t76">76</a></span><span class="t"> <span class="key">with</span> <span class="nam">path</span><span class="op">.</span><span class="nam">open</span><span class="op">(</span><span class="nam">byte_io</span><span class="op">=</span><span class="key">True</span><span class="op">,</span> <span class="nam">buffering</span><span class="op">=</span><span class="nam">io</span><span class="op">.</span><span class="nam">DEFAULT_BUFFER_SIZE</span><span class="op">)</span> <span class="key">as</span> <span class="nam">fd</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t77" href="#t77">77</a></span><span class="t"> <span class="nam">len_elf_header_raw</span> <span class="op">=</span> <span class="nam">fd</span><span class="op">.</span><span class="nam">readinto</span><span class="op">(</span><span class="nam">fd_buffer</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t78" href="#t78">78</a></span><span class="t"> <span class="key">if</span> <span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t79" href="#t79">79</a></span><span class="t"> <span class="key">not</span> <span class="nam">fd_buffer</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t80" href="#t80">80</a></span><span class="t"> <span class="key">or</span> <span class="nam">len_elf_header_raw</span> <span class="op"><</span> <span class="nam">ELF_HEADER_SIZE32</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t81" href="#t81">81</a></span><span class="t"> <span class="key">or</span> <span class="key">not</span> <span class="nam">fd_buffer</span><span class="op">.</span><span class="nam">startswith</span><span class="op">(</span><span class="nam">ELF_MAGIC</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t82" href="#t82">82</a></span><span class="t"> <span class="op">)</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t83" href="#t83">83</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t84" href="#t84">84</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t85" href="#t85">85</a></span><span class="t"> <span class="nam">elf_ei_class</span> <span class="op">=</span> <span class="nam">fd_buffer</span><span class="op">[</span><span class="num">4</span><span class="op">]</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t86" href="#t86">86</a></span><span class="t"> <span class="nam">endian_raw</span> <span class="op">=</span> <span class="nam">fd_buffer</span><span class="op">[</span><span class="num">5</span><span class="op">]</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t87" href="#t87">87</a></span><span class="t"> <span class="key">if</span> <span class="nam">endian_raw</span> <span class="op">==</span> <span class="nam">ELF_ENDIAN_LE</span><span class="op">:</span> </span><span class="r"><span class="annotate short">87 ↛ 89</span><span class="annotate long">line 87 didn't jump to line 89, because the condition on line 87 was never false</span></span></p>
<p class="run"><span class="n"><a id="t88" href="#t88">88</a></span><span class="t"> <span class="nam">endian</span> <span class="op">=</span> <span class="str">"<"</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t89" href="#t89">89</a></span><span class="t"> <span class="key">elif</span> <span class="nam">endian_raw</span> <span class="op">==</span> <span class="nam">ELF_ENDIAN_BE</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t90" href="#t90">90</a></span><span class="t"> <span class="nam">endian</span> <span class="op">=</span> <span class="str">">"</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t91" href="#t91">91</a></span><span class="t"> <span class="key">else</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t92" href="#t92">92</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t93" href="#t93">93</a></span><span class="t"> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t94" href="#t94">94</a></span><span class="t"> <span class="key">if</span> <span class="nam">elf_ei_class</span> <span class="op">==</span> <span class="nam">ELF_EI_ELFCLASS64</span><span class="op">:</span> </span><span class="r"><span class="annotate short">94 ↛ 100</span><span class="annotate long">line 94 didn't jump to line 100, because the condition on line 94 was never false</span></span></p>
<p class="run"><span class="n"><a id="t95" href="#t95">95</a></span><span class="t"> <span class="nam">offset_size</span> <span class="op">=</span> <span class="str">"Q"</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t96" href="#t96">96</a></span><span class="t"> <span class="com"># We know it needs to be a 64bit ELF, then the header must be</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t97" href="#t97">97</a></span><span class="t"> <span class="com"># large enough for that.</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t98" href="#t98">98</a></span><span class="t"> <span class="key">if</span> <span class="nam">len_elf_header_raw</span> <span class="op"><</span> <span class="nam">ELF_HEADER_SIZE64</span><span class="op">:</span> </span><span class="r"><span class="annotate short">98 ↛ 99</span><span class="annotate long">line 98 didn't jump to line 99, because the condition on line 98 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t99" href="#t99">99</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t100" href="#t100">100</a></span><span class="t"> <span class="key">elif</span> <span class="nam">elf_ei_class</span> <span class="op">==</span> <span class="nam">ELF_EI_ELFCLASS32</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t101" href="#t101">101</a></span><span class="t"> <span class="nam">offset_size</span> <span class="op">=</span> <span class="str">"L"</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t102" href="#t102">102</a></span><span class="t"> <span class="key">else</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t103" href="#t103">103</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t104" href="#t104">104</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t105" href="#t105">105</a></span><span class="t"> <span class="nam">elf_type</span><span class="op">,</span> <span class="nam">_elf_machine</span><span class="op">,</span> <span class="nam">elf_version</span> <span class="op">=</span> <span class="nam">struct</span><span class="op">.</span><span class="nam">unpack_from</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t106" href="#t106">106</a></span><span class="t"> <span class="str">f"{endian}HHL"</span><span class="op">,</span> <span class="nam">fd_buffer</span><span class="op">,</span> <span class="nam">offset</span><span class="op">=</span><span class="nam">ELF_EI_NIDENT</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t107" href="#t107">107</a></span><span class="t"> <span class="op">)</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t108" href="#t108">108</a></span><span class="t"> <span class="key">if</span> <span class="nam">elf_version</span> <span class="op">!=</span> <span class="nam">ELF_VERSION</span><span class="op">:</span> </span><span class="r"><span class="annotate short">108 ↛ 109</span><span class="annotate long">line 108 didn't jump to line 109, because the condition on line 108 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t109" href="#t109">109</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t110" href="#t110">110</a></span><span class="t"> <span class="key">if</span> <span class="nam">elf_type</span> <span class="key">not</span> <span class="key">in</span> <span class="op">(</span><span class="nam">ELF_TYPE_EXECUTABLE</span><span class="op">,</span> <span class="nam">ELF_TYPE_SHARED_OBJECT</span><span class="op">)</span><span class="op">:</span> </span><span class="r"><span class="annotate short">110 ↛ 111</span><span class="annotate long">line 110 didn't jump to line 111, because the condition on line 110 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t111" href="#t111">111</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t112" href="#t112">112</a></span><span class="t"> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t113" href="#t113">113</a></span><span class="t"> <span class="key">if</span> <span class="nam">determine_linking_type</span><span class="op">:</span> </span><span class="r"><span class="annotate short">113 ↛ 76</span><span class="annotate long">line 113 didn't jump to line 76</span></span></p>
<p class="run"><span class="n"><a id="t114" href="#t114">114</a></span><span class="t"> <span class="nam">linking_type</span> <span class="op">=</span> <span class="nam">_determine_elf_linking_type</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t115" href="#t115">115</a></span><span class="t"> <span class="nam">fd</span><span class="op">,</span> <span class="nam">fd_buffer</span><span class="op">,</span> <span class="nam">endian</span><span class="op">,</span> <span class="nam">offset_size</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t116" href="#t116">116</a></span><span class="t"> <span class="op">)</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t117" href="#t117">117</a></span><span class="t"> <span class="key">if</span> <span class="nam">linking_type</span> <span class="key">is</span> <span class="key">None</span><span class="op">:</span> </span><span class="r"><span class="annotate short">117 ↛ 118</span><span class="annotate long">line 117 didn't jump to line 118, because the condition on line 117 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t118" href="#t118">118</a></span><span class="t"> <span class="key">return</span> <span class="key">False</span><span class="op">,</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t119" href="#t119">119</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t120" href="#t120">120</a></span><span class="t"> <span class="key">return</span> <span class="key">True</span><span class="op">,</span> <span class="nam">linking_type</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t121" href="#t121">121</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t122" href="#t122">122</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t123" href="#t123">123</a></span><span class="t"><span class="key">def</span> <span class="nam">_determine_elf_linking_type</span><span class="op">(</span><span class="nam">fd</span><span class="op">,</span> <span class="nam">fd_buffer</span><span class="op">,</span> <span class="nam">endian</span><span class="op">,</span> <span class="nam">offset_size</span><span class="op">)</span> <span class="op">-></span> <span class="nam">Optional</span><span class="op">[</span><span class="nam">bool</span><span class="op">]</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t124" href="#t124">124</a></span><span class="t"> <span class="com"># To check the linking, we look for a DYNAMICALLY program header</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t125" href="#t125">125</a></span><span class="t"> <span class="com"># In other words, we assume static linking by default.</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t126" href="#t126">126</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t127" href="#t127">127</a></span><span class="t"> <span class="nam">linking_type</span> <span class="op">=</span> <span class="nam">ELF_LINKING_TYPE_STATIC</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t128" href="#t128">128</a></span><span class="t"> <span class="com"># To do that, we need to read a bit more of the ELF header to</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t129" href="#t129">129</a></span><span class="t"> <span class="com"># locate the Program header table.</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t130" href="#t130">130</a></span><span class="t"> <span class="com">#</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t131" href="#t131">131</a></span><span class="t"> <span class="com"># Reading - in order at offset 0x18:</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t132" href="#t132">132</a></span><span class="t"> <span class="com"># * e_entry (ignored)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t133" href="#t133">133</a></span><span class="t"> <span class="com"># * e_phoff</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t134" href="#t134">134</a></span><span class="t"> <span class="com"># * e_shoff (ignored)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t135" href="#t135">135</a></span><span class="t"> <span class="com"># * e_flags (ignored)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t136" href="#t136">136</a></span><span class="t"> <span class="com"># * e_ehsize (ignored)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t137" href="#t137">137</a></span><span class="t"> <span class="com"># * e_phentsize</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t138" href="#t138">138</a></span><span class="t"> <span class="com"># * e_phnum</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t139" href="#t139">139</a></span><span class="t"> <span class="nam">_</span><span class="op">,</span> <span class="nam">e_phoff</span><span class="op">,</span> <span class="nam">_</span><span class="op">,</span> <span class="nam">_</span><span class="op">,</span> <span class="nam">_</span><span class="op">,</span> <span class="nam">e_phentsize</span><span class="op">,</span> <span class="nam">e_phnum</span> <span class="op">=</span> <span class="nam">struct</span><span class="op">.</span><span class="nam">unpack_from</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t140" href="#t140">140</a></span><span class="t"> <span class="str">f"{endian}{offset_size}{offset_size}{offset_size}LHHH"</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t141" href="#t141">141</a></span><span class="t"> <span class="nam">fd_buffer</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t142" href="#t142">142</a></span><span class="t"> <span class="nam">offset</span><span class="op">=</span><span class="nam">ELF_EI_NIDENT</span> <span class="op">+</span> <span class="num">8</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t143" href="#t143">143</a></span><span class="t"> <span class="op">)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t144" href="#t144">144</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t145" href="#t145">145</a></span><span class="t"> <span class="com"># man 5 elf suggests that Program headers can be absent. If so,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t146" href="#t146">146</a></span><span class="t"> <span class="com"># e_phnum will be zero - but we assume the same for e_phentsize.</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t147" href="#t147">147</a></span><span class="t"> <span class="key">if</span> <span class="nam">e_phnum</span> <span class="op">==</span> <span class="num">0</span><span class="op">:</span> </span><span class="r"><span class="annotate short">147 ↛ 148</span><span class="annotate long">line 147 didn't jump to line 148, because the condition on line 147 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t148" href="#t148">148</a></span><span class="t"> <span class="key">return</span> <span class="nam">linking_type</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t149" href="#t149">149</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t150" href="#t150">150</a></span><span class="t"> <span class="com"># Program headers must be at least 4 bytes for this code to do</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t151" href="#t151">151</a></span><span class="t"> <span class="com"># anything sanely. In practise, it must be larger than that</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t152" href="#t152">152</a></span><span class="t"> <span class="com"># as well. Accordingly, at best this is a corrupted ELF file.</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t153" href="#t153">153</a></span><span class="t"> <span class="key">if</span> <span class="nam">e_phentsize</span> <span class="op"><</span> <span class="num">4</span><span class="op">:</span> </span><span class="r"><span class="annotate short">153 ↛ 154</span><span class="annotate long">line 153 didn't jump to line 154, because the condition on line 153 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t154" href="#t154">154</a></span><span class="t"> <span class="key">return</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t155" href="#t155">155</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t156" href="#t156">156</a></span><span class="t"> <span class="nam">fd</span><span class="op">.</span><span class="nam">seek</span><span class="op">(</span><span class="nam">e_phoff</span><span class="op">,</span> <span class="nam">os</span><span class="op">.</span><span class="nam">SEEK_SET</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t157" href="#t157">157</a></span><span class="t"> <span class="nam">unpack_format</span> <span class="op">=</span> <span class="str">f"{endian}L"</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t158" href="#t158">158</a></span><span class="t"> <span class="key">try</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t159" href="#t159">159</a></span><span class="t"> <span class="key">for</span> <span class="nam">program_header_raw</span> <span class="key">in</span> <span class="nam">_read_bytes_iteratively</span><span class="op">(</span><span class="nam">fd</span><span class="op">,</span> <span class="nam">e_phentsize</span><span class="op">,</span> <span class="nam">e_phnum</span><span class="op">)</span><span class="op">:</span> </span><span class="r"><span class="annotate short">159 ↛ 167</span><span class="annotate long">line 159 didn't jump to line 167, because the loop on line 159 didn't complete</span></span></p>
<p class="run"><span class="n"><a id="t160" href="#t160">160</a></span><span class="t"> <span class="nam">p_type</span> <span class="op">=</span> <span class="nam">struct</span><span class="op">.</span><span class="nam">unpack_from</span><span class="op">(</span><span class="nam">unpack_format</span><span class="op">,</span> <span class="nam">program_header_raw</span><span class="op">)</span><span class="op">[</span><span class="num">0</span><span class="op">]</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t161" href="#t161">161</a></span><span class="t"> <span class="key">if</span> <span class="nam">p_type</span> <span class="op">==</span> <span class="nam">ELF_PT_DYNAMIC</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t162" href="#t162">162</a></span><span class="t"> <span class="nam">linking_type</span> <span class="op">=</span> <span class="nam">ELF_LINKING_TYPE_DYNAMIC</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t163" href="#t163">163</a></span><span class="t"> <span class="key">break</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t164" href="#t164">164</a></span><span class="t"> <span class="key">except</span> <span class="nam">IncompleteFileError</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t165" href="#t165">165</a></span><span class="t"> <span class="key">return</span> <span class="key">None</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t166" href="#t166">166</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t167" href="#t167">167</a></span><span class="t"> <span class="key">return</span> <span class="nam">linking_type</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t168" href="#t168">168</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t169" href="#t169">169</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t170" href="#t170">170</a></span><span class="t"><span class="key">def</span> <span class="nam">_read_bytes_iteratively</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t171" href="#t171">171</a></span><span class="t"> <span class="nam">fd</span><span class="op">:</span> <span class="nam">io</span><span class="op">.</span><span class="nam">BufferedReader</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t172" href="#t172">172</a></span><span class="t"> <span class="nam">object_size</span><span class="op">:</span> <span class="nam">int</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t173" href="#t173">173</a></span><span class="t"> <span class="nam">object_count</span><span class="op">:</span> <span class="nam">int</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t174" href="#t174">174</a></span><span class="t"><span class="op">)</span> <span class="op">-></span> <span class="nam">Iterable</span><span class="op">[</span><span class="nam">bytes</span><span class="op">]</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t175" href="#t175">175</a></span><span class="t"> <span class="nam">total_size</span> <span class="op">=</span> <span class="nam">object_size</span> <span class="op">*</span> <span class="nam">object_count</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t176" href="#t176">176</a></span><span class="t"> <span class="nam">bytes_remaining</span> <span class="op">=</span> <span class="nam">total_size</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t177" href="#t177">177</a></span><span class="t"> <span class="com"># FIXME: improve this to read larger chunks and yield them one-by-one</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t178" href="#t178">178</a></span><span class="t"> <span class="nam">byte_buffer</span> <span class="op">=</span> <span class="nam">bytearray</span><span class="op">(</span><span class="nam">object_size</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t179" href="#t179">179</a></span><span class="t"> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t180" href="#t180">180</a></span><span class="t"> <span class="key">while</span> <span class="nam">bytes_remaining</span> <span class="op">></span> <span class="num">0</span><span class="op">:</span> </span><span class="r"><span class="annotate short">180 ↛ 187</span><span class="annotate long">line 180 didn't jump to line 187, because the condition on line 180 was never false</span></span></p>
<p class="run"><span class="n"><a id="t181" href="#t181">181</a></span><span class="t"> <span class="nam">n</span> <span class="op">=</span> <span class="nam">fd</span><span class="op">.</span><span class="nam">readinto</span><span class="op">(</span><span class="nam">byte_buffer</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="par run show_par"><span class="n"><a id="t182" href="#t182">182</a></span><span class="t"> <span class="key">if</span> <span class="nam">n</span> <span class="op">!=</span> <span class="nam">object_size</span><span class="op">:</span> </span><span class="r"><span class="annotate short">182 ↛ 183</span><span class="annotate long">line 182 didn't jump to line 183, because the condition on line 182 was never true</span></span></p>
<p class="mis show_mis"><span class="n"><a id="t183" href="#t183">183</a></span><span class="t"> <span class="key">break</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t184" href="#t184">184</a></span><span class="t"> <span class="nam">bytes_remaining</span> <span class="op">-=</span> <span class="nam">n</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t185" href="#t185">185</a></span><span class="t"> <span class="key">yield</span> <span class="nam">byte_buffer</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t186" href="#t186">186</a></span><span class="t"> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t187" href="#t187">187</a></span><span class="t"> <span class="key">if</span> <span class="nam">bytes_remaining</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="mis show_mis"><span class="n"><a id="t188" href="#t188">188</a></span><span class="t"> <span class="key">raise</span> <span class="nam">IncompleteFileError</span><span class="op">(</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t189" href="#t189">189</a></span><span class="t"> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t190" href="#t190">190</a></span><span class="t"> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t191" href="#t191">191</a></span><span class="t"><span class="key">def</span> <span class="nam">find_all_elf_files</span><span class="op">(</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t192" href="#t192">192</a></span><span class="t"> <span class="nam">fs_root</span><span class="op">:</span> <span class="nam">VirtualPath</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t193" href="#t193">193</a></span><span class="t"> <span class="op">*</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t194" href="#t194">194</a></span><span class="t"> <span class="nam">walk_filter</span><span class="op">:</span> <span class="nam">Optional</span><span class="op">[</span><span class="nam">Callable</span><span class="op">[</span><span class="op">[</span><span class="nam">VirtualPath</span><span class="op">,</span> <span class="nam">List</span><span class="op">[</span><span class="nam">VirtualPath</span><span class="op">]</span><span class="op">]</span><span class="op">,</span> <span class="nam">bool</span><span class="op">]</span><span class="op">]</span> <span class="op">=</span> <span class="key">None</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t195" href="#t195">195</a></span><span class="t"> <span class="nam">with_linking_type</span><span class="op">:</span> <span class="nam">Optional</span><span class="op">[</span><span class="nam">bool</span><span class="op">]</span> <span class="op">=</span> <span class="nam">ELF_LINKING_TYPE_ANY</span><span class="op">,</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t196" href="#t196">196</a></span><span class="t"><span class="op">)</span> <span class="op">-></span> <span class="nam">List</span><span class="op">[</span><span class="nam">VirtualPath</span><span class="op">]</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t197" href="#t197">197</a></span><span class="t"> <span class="nam">matches</span><span class="op">:</span> <span class="nam">List</span><span class="op">[</span><span class="nam">VirtualPath</span><span class="op">]</span> <span class="op">=</span> <span class="op">[</span><span class="op">]</span> </span><span class="r"></span></p>
<p class="pln"><span class="n"><a id="t198" href="#t198">198</a></span><span class="t"> <span class="com"># FIXME: Implementation detail that fs_root is always `FSPath` and has `.walk()`</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t199" href="#t199">199</a></span><span class="t"> <span class="key">assert</span> <span class="nam">isinstance</span><span class="op">(</span><span class="nam">fs_root</span><span class="op">,</span> <span class="nam">FSPath</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t200" href="#t200">200</a></span><span class="t"> <span class="key">for</span> <span class="nam">path</span><span class="op">,</span> <span class="nam">children</span> <span class="key">in</span> <span class="nam">fs_root</span><span class="op">.</span><span class="nam">walk</span><span class="op">(</span><span class="op">)</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t201" href="#t201">201</a></span><span class="t"> <span class="key">if</span> <span class="nam">walk_filter</span> <span class="key">is</span> <span class="key">not</span> <span class="key">None</span> <span class="key">and</span> <span class="key">not</span> <span class="nam">walk_filter</span><span class="op">(</span><span class="nam">path</span><span class="op">,</span> <span class="nam">children</span><span class="op">)</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t202" href="#t202">202</a></span><span class="t"> <span class="key">continue</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t203" href="#t203">203</a></span><span class="t"> <span class="key">if</span> <span class="key">not</span> <span class="nam">path</span><span class="op">.</span><span class="nam">is_file</span> <span class="key">or</span> <span class="nam">path</span><span class="op">.</span><span class="nam">size</span> <span class="op"><</span> <span class="nam">ELF_HEADER_SIZE32</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t204" href="#t204">204</a></span><span class="t"> <span class="key">continue</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t205" href="#t205">205</a></span><span class="t"> <span class="key">if</span> <span class="key">not</span> <span class="nam">is_so_or_exec_elf_file</span><span class="op">(</span><span class="nam">path</span><span class="op">,</span> <span class="nam">assert_linking_type</span><span class="op">=</span><span class="nam">with_linking_type</span><span class="op">)</span><span class="op">:</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t206" href="#t206">206</a></span><span class="t"> <span class="key">continue</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t207" href="#t207">207</a></span><span class="t"> <span class="nam">matches</span><span class="op">.</span><span class="nam">append</span><span class="op">(</span><span class="nam">path</span><span class="op">)</span> </span><span class="r"></span></p>
<p class="run"><span class="n"><a id="t208" href="#t208">208</a></span><span class="t"> <span class="key">return</span> <span class="nam">matches</span> </span><span class="r"></span></p>
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