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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> kernelnewbies-bounces@kernelnewbies.org [mailto:kernelnewbies-bounces@kernelnewbies.org]
<b>On Behalf Of </b>Lucas Tanure<br>
<b>Sent:</b> Tuesday, July 21, 2015 11:49 AM<br>
<b>To:</b> Kernelnewbies@kernelnewbies.org<br>
<b>Subject:</b> Obfuscate code GPL 2 - The source uses kernel structs and GPL2 API<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">This company released a obfuscated kernel module in GPL 2. <o:p></o:p></p>
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<p class="MsoNormal"><a href="http://www.incentivespro.com/downloads.html">http://www.incentivespro.com/downloads.html</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">So, they didn't release the code at all. This is ok ? <o:p></o:p></p>
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<p class="MsoNormal">This against the law ? <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">If you download the source for linux you will se this code:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">/*<o:p></o:p></p>
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<p class="MsoNormal"> *<o:p></o:p></p>
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<p class="MsoNormal"> * Copyright (C) 2007-2015 SimplyCore, LLC<o:p></o:p></p>
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<p class="MsoNormal"> *<o:p></o:p></p>
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<p class="MsoNormal"> * This program is free software; you can redistribute it and/or modify<o:p></o:p></p>
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<p class="MsoNormal"> * it under the terms of the GNU General Public License version 2 as<o:p></o:p></p>
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<p class="MsoNormal"> * published by the Free Software Foundation.<o:p></o:p></p>
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<p class="MsoNormal"> *<o:p></o:p></p>
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<p class="MsoNormal"> *<o:p></o:p></p>
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<p class="MsoNormal"> */<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">#include "usbd.h"<o:p></o:p></p>
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<p class="MsoNormal">#ifdef _USBD_DEBUG_MEMORY_<o:p></o:p></p>
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<p class="MsoNormal">atomic_t llIlllll=ATOMIC_INIT((0x575+1935-0xd04));atomic_t lIIlIIIll=ATOMIC_INIT<o:p></o:p></p>
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<p class="MsoNormal">((0xa1d+3263-0x16dc));atomic_t IllIlIlI=ATOMIC_INIT((0x128f+4169-0x22d8));<o:p></o:p></p>
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<p class="MsoNormal">atomic_t IlIllllI=ATOMIC_INIT((0xf24+561-0x1155));<o:p></o:p></p>
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<p class="MsoNormal">#ifdef ATOMIC64_INIT<o:p></o:p></p>
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<p class="MsoNormal">atomic64_t llIlIlll=ATOMIC64_INIT((0xeb9+1200-0x1369));<o:p></o:p></p>
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<p class="MsoNormal">#endif<o:p></o:p></p>
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<p class="MsoNormal">atomic_t IllllIlI=ATOMIC_INIT((0x95+5058-0x1457));atomic_t lIIllllI=ATOMIC_INIT(<o:p></o:p></p>
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<p class="MsoNormal">(0x54+4166-0x109a));atomic_t llIllIlI=ATOMIC_INIT((0x90+8277-0x20e5));<o:p></o:p></p>
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<p class="MsoNormal">#endif <o:p></o:p></p>
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<p class="MsoNormal">struct lllIl*IIIIlll=NULL;<o:p></o:p></p>
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<p class="MsoNormal">#ifdef _USBD_ENABLE_STUB_<o:p></o:p></p>
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<p class="MsoNormal">spinlock_t IIIIlII;struct list_head IIIIlIlI;<o:p></o:p></p>
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<p class="MsoNormal">#endif<o:p></o:p></p>
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<p class="MsoNormal">static int lIIIlIII=(0x1b5b+1617-0x21ac);module_param(lIIIlIII,int,<o:p></o:p></p>
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<p class="MsoNormal">... <o:p></o:p></p>
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<p class="MsoNormal">many lines<o:p></o:p></p>
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<p class="MsoNormal">....<o:p></o:p></p>
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<p class="MsoNormal">#endif <o:p></o:p></p>
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<p class="MsoNormal">IIIll("\x75\x73\x62\x64\x5f\x65\x78\x69\x74" "\n");}module_init(IlIIllIIl);<o:p></o:p></p>
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<p class="MsoNormal">module_exit(usbd_exit);MODULE_LICENSE("\x47\x50\x4c");<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">That is just too funny. I haven’t seen that trick done for 40 years, then it was sequences of capital ‘O’s and ‘0’s in COBOL code. But these guys take it to
a new extreme, they are too afraid of their lawyers to even code a literal “GPL” in the MODULE_LICENSE statement. And then they’ve got silly stuff like this 0x575+1935-0xd04 to hide a 0. That wouldn’t stump a bright 3<sup>rd</sup> grader. Nice to know this
company is paying its developers to concentrate on the important things; one could I suppose make some reasonable conclusions about the resultant product quality.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">But it seems to me that if it builds, then they’ve released the code.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I’ve seen Linux kernel maintainers strip all the comments from patches that have been submitted to them. Hard for me to see much difference here legally.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Disclaimer: I’m not a lawyer, so don’t take my word for it. Just my humble, legally uneducated opinion.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Jeff Haran<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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