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classes-simplesniffer


			
				
					
						
						
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<div class="title">sniffer.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#ifndef SNIFFER_H</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#define SNIFFER_H</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;</div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &lt;QObject&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &lt;QString&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &lt;QDebug&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &quot;ip_packet.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#include &lt;QWaitCondition&gt;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &lt;QMutex&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;pcap.h&gt;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;ctype.h&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;cstring&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &lt;errno.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &lt;sys/types.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &lt;netinet/in.h&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &quot;ethernet_hdr.h&quot;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &quot;ip_hdr.h&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;tcp_hdr.h&quot;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;udp_hdr.h&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">/* default snap length (maximum bytes per packet to capture) */</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#define SNAP_LEN 1518</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">/* ethernet headers are always exactly 14 bytes [1] */</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#define SIZE_ETHERNET 14</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#define IPV4 8</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">class </span><a class="code" href="class_sniffer.html">Sniffer</a> : <span class="keyword">public</span> QObject</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;{</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    Q_OBJECT</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <a class="code" href="class_sniffer.html#a8039cbd5f487a357321d57337a664d3d">Sniffer</a>() ;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    <a class="code" href="class_sniffer.html#a8039cbd5f487a357321d57337a664d3d">Sniffer</a>(QWaitCondition *pw, QMutex *mx, <span class="keywordtype">int</span> *ps) ;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <a class="code" href="class_sniffer.html#a8ad3b97292e2cc274f31d87701f92be2">~Sniffer</a>() ;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    vector&lt;ip_packet&gt; * <a class="code" href="class_sniffer.html#a791027d276cfcc5e6849132ecf8e80b6">getPacketList</a>() ;</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    <span class="keywordtype">string</span> <a class="code" href="class_sniffer.html#a3dd95c60c5b8554e1bedc22b36ae488c">format_payload</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *payload, <span class="keywordtype">int</span> len);</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <span class="keywordtype">string</span> <a class="code" href="class_sniffer.html#a02101b56a75804d1ed39a1c04ba36ab2">format_hex_ascii_line</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *payload, <span class="keywordtype">int</span> len, <span class="keywordtype">int</span> offset);</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_sniffer.html#a94d7cd87d0f181c3cf2e5ec851e370b6">find_devices</a>(vector&lt;string&gt; &amp;) ;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_sniffer.html#ab706811aa2b285e4c0f55491703c105a">setDevice</a>(<span class="keywordtype">string</span>) ;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="keyword">public</span> slots:</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_sniffer.html#a6fc78b66d2f4dce0cc3662dacf171514">process</a>()  ;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;signals:</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordtype">void</span> resultReady(<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> index);</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    vector&lt;ip_packet&gt; packet_list ;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    QWaitCondition *wait_pause ;</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    QMutex  * mutex ;</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    <span class="keywordtype">string</span> device ;</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    <span class="keywordtype">string</span> filter ;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    <span class="keywordtype">int</span> *pause ;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_sniffer.html#ac05f935a6ec2830d6bf42b607f071910">print_payload</a>(<span class="keyword">const</span> u_char *payload, <span class="keywordtype">int</span> len);</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="class_sniffer.html#a70598d5001a30cc8e801f1262770cdf6">print_hex_ascii_line</a>(<span class="keyword">const</span> u_char *payload, <span class="keywordtype">int</span> len, <span class="keywordtype">int</span> offset);</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    <span class="keywordtype">void</span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    <a class="code" href="class_sniffer.html#a0179e32fee6a0f7c2a13f37d64a7fae0">got_packet</a>(<span class="keyword">const</span> <span class="keyword">struct</span> pcap_pkthdr *header, <span class="keyword">const</span> u_char *packet);</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;};</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="preprocessor">#endif // SNIFFER_H</span></div>
<div class="ttc" id="class_sniffer_html_a0179e32fee6a0f7c2a13f37d64a7fae0"><div class="ttname"><a href="class_sniffer.html#a0179e32fee6a0f7c2a13f37d64a7fae0">Sniffer::got_packet</a></div><div class="ttdeci">void got_packet(const struct pcap_pkthdr *header, const u_char *packet)</div><div class="ttdoc">Disects the received packet. Takes out the info needed. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:394</div></div>
<div class="ttc" id="class_sniffer_html_a3dd95c60c5b8554e1bedc22b36ae488c"><div class="ttname"><a href="class_sniffer.html#a3dd95c60c5b8554e1bedc22b36ae488c">Sniffer::format_payload</a></div><div class="ttdeci">string format_payload(const char *payload, int len)</div><div class="ttdoc">Formats the payload from a byte stream into a string of ascci. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:342</div></div>
<div class="ttc" id="class_sniffer_html_a8ad3b97292e2cc274f31d87701f92be2"><div class="ttname"><a href="class_sniffer.html#a8ad3b97292e2cc274f31d87701f92be2">Sniffer::~Sniffer</a></div><div class="ttdeci">~Sniffer()</div><div class="ttdoc">Destructor, does nothing. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:35</div></div>
<div class="ttc" id="class_sniffer_html_a6fc78b66d2f4dce0cc3662dacf171514"><div class="ttname"><a href="class_sniffer.html#a6fc78b66d2f4dce0cc3662dacf171514">Sniffer::process</a></div><div class="ttdeci">void process()</div><div class="ttdoc">The sniffer is run as a separate thread and the function process is the main function of the thread...</div><div class="ttdef"><b>Definition:</b> sniffer.cpp:45</div></div>
<div class="ttc" id="class_sniffer_html_a70598d5001a30cc8e801f1262770cdf6"><div class="ttname"><a href="class_sniffer.html#a70598d5001a30cc8e801f1262770cdf6">Sniffer::print_hex_ascii_line</a></div><div class="ttdeci">void print_hex_ascii_line(const u_char *payload, int len, int offset)</div><div class="ttdoc">Prints to std output the a payload in ascii. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:157</div></div>
<div class="ttc" id="class_sniffer_html_ac05f935a6ec2830d6bf42b607f071910"><div class="ttname"><a href="class_sniffer.html#ac05f935a6ec2830d6bf42b607f071910">Sniffer::print_payload</a></div><div class="ttdeci">void print_payload(const u_char *payload, int len)</div><div class="ttdoc">Prints the payload in ascii. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:278</div></div>
<div class="ttc" id="class_sniffer_html_ab706811aa2b285e4c0f55491703c105a"><div class="ttname"><a href="class_sniffer.html#ab706811aa2b285e4c0f55491703c105a">Sniffer::setDevice</a></div><div class="ttdeci">void setDevice(string)</div><div class="ttdoc">Sets the device to capture packets to dev. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:561</div></div>
<div class="ttc" id="class_sniffer_html_a791027d276cfcc5e6849132ecf8e80b6"><div class="ttname"><a href="class_sniffer.html#a791027d276cfcc5e6849132ecf8e80b6">Sniffer::getPacketList</a></div><div class="ttdeci">vector&lt; ip_packet &gt; * getPacketList()</div><div class="ttdoc">Returns the packet list that contains the packets that are Ethernet -> IP -> (TCP|UDP) ...</div><div class="ttdef"><b>Definition:</b> sniffer.cpp:520</div></div>
<div class="ttc" id="class_sniffer_html_a94d7cd87d0f181c3cf2e5ec851e370b6"><div class="ttname"><a href="class_sniffer.html#a94d7cd87d0f181c3cf2e5ec851e370b6">Sniffer::find_devices</a></div><div class="ttdeci">void find_devices(vector&lt; string &gt; &amp;)</div><div class="ttdoc">Find the network devices in the computer, and store them in vector devs. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:533</div></div>
<div class="ttc" id="class_sniffer_html_a8039cbd5f487a357321d57337a664d3d"><div class="ttname"><a href="class_sniffer.html#a8039cbd5f487a357321d57337a664d3d">Sniffer::Sniffer</a></div><div class="ttdeci">Sniffer()</div><div class="ttdoc">Constructor, does nothing. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:8</div></div>
<div class="ttc" id="class_sniffer_html_a02101b56a75804d1ed39a1c04ba36ab2"><div class="ttname"><a href="class_sniffer.html#a02101b56a75804d1ed39a1c04ba36ab2">Sniffer::format_hex_ascii_line</a></div><div class="ttdeci">string format_hex_ascii_line(const char *payload, int len, int offset)</div><div class="ttdoc">Return string with the bytes of a payload line in ascii. </div><div class="ttdef"><b>Definition:</b> sniffer.cpp:219</div></div>
<div class="ttc" id="class_sniffer_html"><div class="ttname"><a href="class_sniffer.html">Sniffer</a></div><div class="ttdoc">The Sniffer class is the one that use the pcap library to extract the packet information. It discards any packet that is not Ethernet->IP->(TCP|UDP), and pass up to the GUI the packets that are Ethernet->IP->(TCP|UDP). </div><div class="ttdef"><b>Definition:</b> sniffer.h:40</div></div>
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