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EthernetInterface_8cc_source.html
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#include "EthernetInterface.h"</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#include "rpc_error.h"</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include "config.h"</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "log.h"</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "exceptions.h"</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">using namespace </span>pxar;</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="keywordtype">void</span> print_eth_packet(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* packet, <span class="keywordtype">int</span> len){</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  printf(<span class="stringliteral">"LEN:%d "</span>, len);</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < len; i++){</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  printf(<span class="stringliteral">"%02X:"</span>,packet[i]);</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  }</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  printf(<span class="stringliteral">"\n"</span>);</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> }</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keywordtype">bool</span> packet_equals(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* pkt1, </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* pkt2, <span class="keywordtype">int</span> size){</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < size; i++){</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordflow">if</span>(pkt1[i] != pkt2[i]) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  }</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> }</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#ifdef __unix__</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span><span class="preprocessor">#include <sys/types.h></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <sys/socket.h></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <netinet/in.h></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <arpa/inet.h></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <net/if.h></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <netpacket/packet.h></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <ifaddrs.h></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <cstdio></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <cstdlib></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <string.h></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keywordtype">void</span> Get_MAC(<span class="keyword">const</span> <span class="keywordtype">char</span>* if_name, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buffer){</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  ifaddrs * ifap = 0;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span>(getifaddrs(&ifap) == 0){</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  ifaddrs * iter = ifap;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">while</span>(iter){</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  sockaddr_ll * sal = <span class="keyword">reinterpret_cast<</span>sockaddr_ll*<span class="keyword">></span>(iter->ifa_addr);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span>(sal->sll_family == AF_PACKET){</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">if</span>(!strcmp(if_name, iter->ifa_name)){</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0 ; i < sal->sll_halen; i++){</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  buffer[i] = sal->sll_addr[i];</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  }</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  iter = iter->ifa_next;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  freeifaddrs(ifap);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#ifdef __APPLE__</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"></span><span class="preprocessor">#include <sys/types.h></span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor">#include <sys/socket.h></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#include <sys/ioctl.h></span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor">#include <sys/sysctl.h></span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="preprocessor">#include <net/if.h></span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="preprocessor">#include <net/if_dl.h></span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="preprocessor">#include <netinet/in.h></span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="preprocessor">#include <arpa/inet.h></span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#include <errno.h></span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">void</span> Get_MAC(<span class="keyword">const</span> <span class="keywordtype">char</span>* if_name, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buffer){</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> mib[6];</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">size_t</span> len;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">char</span> *buf;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *ptr;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">struct </span>if_msghdr *ifm;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">struct </span>sockaddr_dl *sdl;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  mib[0] = CTL_NET;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  mib[1] = AF_ROUTE;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  mib[2] = 0;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  mib[3] = AF_LINK;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  mib[4] = NET_RT_IFLIST;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">if</span> ((mib[5] = if_nametoindex(if_name)) == 0) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  perror(<span class="stringliteral">"if_nametoindex error"</span>);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  exit(2);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">if</span> (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  perror(<span class="stringliteral">"sysctl 1 error"</span>);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  exit(3);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> ((buf = (<span class="keywordtype">char</span>*)malloc(len)) == NULL) {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  perror(<span class="stringliteral">"malloc error"</span>);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  exit(4);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  perror(<span class="stringliteral">"sysctl 2 error"</span>);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  exit(5);</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  ifm = (<span class="keyword">struct </span>if_msghdr *)buf;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  sdl = (<span class="keyword">struct </span>sockaddr_dl *)(ifm + 1);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  ptr = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *)LLADDR(sdl);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 6; i++){</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  buffer[i] = ptr[i];</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> }</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor">#ifdef _WIN32 //Not finished</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor"></span><span class="preprocessor">#include <winsock2.h></span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#include <iphlpapi.h></span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="keywordtype">void</span> Get_MAC(<span class="keyword">const</span> <span class="keywordtype">char</span>* if_name, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buffer){</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  std::vector<unsigned char> buf;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  DWORD bufLen = 0;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  GetAdaptersAddresses(0, 0, 0, 0, &bufLen);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span>(bufLen)</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  buf.resize(bufLen, 0);</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  IP_ADAPTER_ADDRESSES * ptr =</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">reinterpret_cast<</span>IP_ADAPTER_ADDRESSES*<span class="keyword">></span>(&buf[0]);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  DWORD err = GetAdaptersAddresses(0, 0, 0, ptr, &bufLen);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">if</span>(err == NO_ERROR)</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">while</span>(ptr)</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span>(ptr->PhysicalAddressLength)</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// get the mac bytes</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">// copy(ptr->PhysicalAddress,</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">// ptr->PhysicalAddress+ptr->PhysicalAddressLength,</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// buffer);</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  ptr = ptr->Next;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> }</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> CEthernet::CEthernet(){</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ipid = getpid();</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  host_pid[0] = (<span class="keywordtype">unsigned</span> char) (ipid>>8);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  host_pid[1] = (<span class="keywordtype">unsigned</span> char) ipid;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">interface </span>+= ETHERNET_INTERFACE;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  is_open = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  LOG(logINTERFACE) << <span class="stringliteral">"Start initializing ethernet interface."</span>;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  InitInterface();</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> CEthernet::~CEthernet(){</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span>(is_open){</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  Close();</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  pcap_close(descr);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> }</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keywordtype">void</span> CEthernet::Write(<span class="keyword">const</span> <span class="keywordtype">void</span> *buffer, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> size){</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0 ; i < size; i++){</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">if</span>(tx_payload_size == MAX_TX_DATA){</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  Flush();</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  tx_frame[ETH_HEADER_SIZE + tx_payload_size] = ((<span class="keywordtype">char</span>*)buffer)[i];</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  tx_payload_size++;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> }</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="keywordtype">void</span> CEthernet::Flush(){</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i =0; i < 6; i++){</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  tx_frame[i] = dtb_mac[i];</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  tx_frame[i+6] = host_mac[i];</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  tx_frame[12] = 0x08;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  tx_frame[13] = 0x09;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  tx_frame[14] = host_pid[0];</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  tx_frame[15] = host_pid[1];</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  tx_frame[16] = 0x0;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  tx_frame[17] = tx_payload_size >> 8;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  tx_frame[18] = tx_payload_size;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  IFLOG(logINTERFACE) {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  std::stringstream st;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  st << std::uppercase << std::hex;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> i = 0; i < tx_payload_size + ETH_HEADER_SIZE; i++) {</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  st << std::setw(2) << std::setfill(<span class="charliteral">'0'</span>) << tx_frame[i];</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  st << std::nouppercase << std::dec;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  LOG(logINTERFACE) << <span class="stringliteral">"Sent packet: "</span> << st.str();</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  pcap_sendpacket(descr, tx_frame, tx_payload_size + ETH_HEADER_SIZE);</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  tx_payload_size = 0;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> }</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keywordtype">void</span> CEthernet::Clear(){</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  tx_payload_size = 0;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  rx_buffer.clear();</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> }</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="keywordtype">void</span> CEthernet::Read(<span class="keywordtype">void</span> *buffer, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> size){</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordtype">int</span> timeout = 10000;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < size; i++){</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">if</span>(!rx_buffer.empty()){</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  ((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)buffer)[i] = rx_buffer.front();</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  rx_buffer.pop_front();</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  } <span class="keywordflow">else</span>{</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* rx_frame = pcap_next(descr, &header);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span>(rx_frame == NULL){</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  timeout--;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  i--;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">if</span>(timeout == 0){</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  printf(<span class="stringliteral">"Error reading from ethernet.\n"</span>);</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">throw</span> CRpcError(CRpcError::TIMEOUT);</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  IFLOG(logINTERFACE) {</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  std::stringstream st;</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  st << std::uppercase << std::hex;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> i = 0; i < header.len; i++){</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  st << std::setw(2) << std::setfill(<span class="charliteral">'0'</span>) << rx_frame[i];</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  }</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  st << std::nouppercase << std::dec;</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  LOG(logINTERFACE) << <span class="stringliteral">"Received packet: "</span> << st.str();</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">if</span>(header.len < ETH_HEADER_SIZE){ <span class="comment">// malformed message</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  i--;</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  }</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span>(!packet_equals(rx_frame,host_mac,6) || </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  !packet_equals(rx_frame+14,host_pid,2) ||</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  rx_frame[16] != 0) {</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  i--;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  LOG(logINTERFACE) << <span class="stringliteral">"Passed Filter."</span>;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  </div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> rx_payload_size = rx_frame[17];</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  rx_payload_size = (rx_payload_size << 8) | rx_frame[18];</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">for</span>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j =0; j < rx_payload_size;j++){</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  rx_buffer.push_back(rx_frame[j + ETH_HEADER_SIZE]);</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  }</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  i--;</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  }</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> }</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keywordtype">void</span> CEthernet::InitInterface(){</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  rx_buffer.resize(0);</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i =0; i < TX_FRAME_SIZE; i++){</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  tx_frame[i] = 0;</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  tx_payload_size = 0;</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordtype">char</span> errbuf[PCAP_ERRBUF_SIZE];</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  descr = pcap_open_live(interface.c_str(), BUFSIZ,0,100,errbuf);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">if</span>(descr == NULL) {</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  LOG(logINTERFACE) << <span class="stringliteral">"pcap_open_live() failed:"</span>;</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  LOG(logINTERFACE) << <span class="keyword">interface </span><< " | " << errbuf;</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">throw</span> CRpcError(CRpcError::IF_INIT_ERROR);</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  }</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  </div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  Get_MAC(interface.c_str(), host_mac); </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 6; i++) tx_frame[i+6] = host_mac[i];</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> }</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="keywordtype">bool</span> CEthernet::EnumFirst(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> &nDevices){</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  Hello();</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  nDevices = MAC_addresses.size();</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> }</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="keywordtype">bool</span> CEthernet::EnumNext(<span class="keywordtype">char</span> name[]){</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordtype">string</span> MAC = MAC_addresses[MAC_counter];</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  MAC_counter = (MAC_counter + 1) % MAC_addresses.size();</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  </div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> i = 0; i < MAC.size(); i++){</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  name[i] = MAC.at(i);</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  }</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> }</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="keywordtype">bool</span> CEthernet::Enum(<span class="keywordtype">char</span> name[], <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pos){</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordtype">string</span> MAC = MAC_addresses[pos];</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  </div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 10; i++){</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  name[i] = MAC[i];</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  }</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> }</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="keywordtype">bool</span> CEthernet::Open(<span class="keywordtype">char</span> MAC_address[]){</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">if</span>(is_open) Close();</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordtype">bool</span> success = Claim(((<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*)MAC_address)+7,<span class="keyword">true</span>);</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">if</span>(!success) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i =0; i < 6; i++){</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  dtb_mac[i] = MAC_address[7+i];</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  }</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  is_open = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="keywordtype">void</span> CEthernet::Close(){</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">if</span>(!is_open) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordtype">bool</span> success = Unclaim();</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">if</span>(!success) <span class="keywordflow">throw</span> CRpcError(CRpcError::ETH_ERROR);</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i =0; i < 6; i++){</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  dtb_mac[i] = 0x00;</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  tx_frame[i] = dtb_mac[i];</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  }</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  is_open = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> }</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="keywordtype">void</span> CEthernet::Hello(){</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> packet[17];</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  </div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 6; i++){</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  packet[i] = 0xFF;</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  packet[i+6] = host_mac[i];</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  }</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  packet[12] = 0x08;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  packet[13] = 0x09;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  packet[14] = host_pid[0];</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  packet[15] = host_pid[1];</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  packet[16] = 0x1;</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  </div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  pcap_sendpacket(descr, packet, <span class="keyword">sizeof</span>(packet));</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  </div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  </div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  MAC_addresses.clear();</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  MAC_counter = 0;</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="comment">//wait at least 1 second for responses.</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  time_t startTime = time(NULL);</div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* rx_frame;</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">while</span>(time(NULL) - startTime < 2){ </div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  rx_frame = pcap_next(descr, &header);</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">if</span>(rx_frame == NULL) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">if</span>(header.len < 17) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">if</span>(rx_frame[12] != 0x08 || rx_frame[13] != 0x09) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  </div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">if</span>(!packet_equals(rx_frame + 14, host_pid, 2)) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  </div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  </div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keywordflow">if</span>(packet[16] != 0x1) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  </div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keywordtype">string</span> mac(<span class="stringliteral">"DTB_ETH "</span>);</div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 6; i++) mac[7+i] = rx_frame[6+i];</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  MAC_addresses.push_back(mac);</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  }</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> }</div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> </div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="keywordtype">bool</span> CEthernet::Claim(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* MAC, <span class="keywordtype">bool</span> force){</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> packet[17];</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  </div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 6; i++){</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  packet[i] = MAC[i];</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  packet[i+6] = host_mac[i];</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  }</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  packet[12] = 0x08;</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  packet[13] = 0x09;</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  packet[14] = host_pid[0];</div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  packet[15] = host_pid[1];</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  packet[16] = (force) ? 0x4 : 0x2;</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  </div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  pcap_sendpacket(descr, packet, <span class="keyword">sizeof</span>(packet));</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  </div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  MAC_addresses.clear();</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  MAC_counter = 0;</div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="comment">//wait at least 1 second for response.</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  time_t startTime = time(NULL);</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* rx_frame;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">while</span>(time(NULL) - startTime < 2){ </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  rx_frame = pcap_next(descr, &header);</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keywordflow">if</span>(rx_frame == NULL) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">if</span>(header.len < 17) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  </div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span>(rx_frame[12] != 0x08 || rx_frame[13] != 0x09) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">if</span>(!packet_equals(rx_frame + 14, host_pid, 2)) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordflow">if</span>(!packet_equals(rx_frame, host_mac, 6)) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">return</span> rx_frame[16] == 0x1; <span class="comment">//value of 1 indicates claim was successful</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  </div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  }</div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> }</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> </div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="keywordtype">bool</span> CEthernet::Unclaim(){</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> packet[17];</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < 6; i++){</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  packet[i] = dtb_mac[i];</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  packet[i+6] = host_mac[i];</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  }</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  packet[12] = 0x08;</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  packet[13] = 0x09;</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  packet[14] = host_pid[0];</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  packet[15] = host_pid[1];</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  packet[16] = 0x3; <span class="comment">//unclaim</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  </div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  pcap_sendpacket(descr, packet, <span class="keyword">sizeof</span>(packet));</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  MAC_addresses.clear();</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  MAC_counter = 0;</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="comment">//wait at least 1 second for response.</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  time_t startTime = time(NULL);</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* rx_frame;</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">while</span>(time(NULL) - startTime < 2){ </div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  rx_frame = pcap_next(descr, &header);</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">if</span>(rx_frame == NULL) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordflow">if</span>(header.len < 17) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  </div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keywordflow">if</span>(rx_frame[12] != 0x08 || rx_frame[13] != 0x09) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordflow">if</span>(!packet_equals(rx_frame + 14, host_pid, 2)) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordflow">if</span>(!packet_equals(rx_frame, host_mac, 6)) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  </div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">return</span> rx_frame[16] == 0x1; <span class="comment">//value of 1 indicates unclaim was successful</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  }</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> }</div>
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