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<div class="title">tcpdump.c</div> </div>
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<a href="../../d4/d4d/tcpdump_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2001, Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved. </span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without </span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * modification, are permitted provided that the following conditions </span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * are met: </span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright </span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * notice, this list of conditions and the following disclaimer. </span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright </span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in the </span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * documentation and/or other materials provided with the distribution. </span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * 3. Neither the name of the Institute nor the names of its contributors </span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * may be used to endorse or promote products derived from this software </span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * without specific prior written permission. </span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND </span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE </span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE </span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE </span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL </span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS </span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) </span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT </span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY </span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF </span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * SUCH DAMAGE. </span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * $Id: tcpdump.c 54 2016-01-11 01:29:55Z reddawg $</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> */</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 <<a class="code" href="../../d6/db4/include_2vfs_2file_8h.html">vfs/file.h</a>></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="../../d3/d24/kpanic_8h.html">ubixos/kpanic.h</a>></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include "netif/tcpdump.h"</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include "net/ipv4/ip.h"</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#include "<a class="code" href="../../d8/da5/tcp_8h.html">net/tcp.h</a>"</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include "<a class="code" href="../../d2/da7/udp_8h.html">net/udp.h</a>"</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#include "net/ipv4/inet.h"</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  </div>
<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="../../d4/d4d/tcpdump_8c.html#a03d2d7be521e9d357862075078d24f06"> 45</a></span> <a class="code" href="../../d0/d22/structfileDescriptor.html">fileDescriptor</a> *<a class="code" href="../../d7/d3a/structfile.html">file</a> = <a class="code" href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="../../d4/d4d/tcpdump_8c.html#a5a1493a11fbda3bb015f788583dfd3e4"> 47</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d4d/tcpdump_8c.html#a5a1493a11fbda3bb015f788583dfd3e4">tcpdump_init</a>(<span class="keywordtype">void</span>) {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">char</span> *fname;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  fname = <span class="stringliteral">"tcpdump"</span>;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="../../d7/d3a/structfile.html">file</a> = <a class="code" href="../../d6/d13/file_8c.html#a249f3bc0af043dc5ac3c9aa8646986af">fopen</a>(fname, <span class="stringliteral">"wb"</span>);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span>(<a class="code" href="../../d7/d3a/structfile.html">file</a> == <a class="code" href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="../../dc/d94/armv6_2kpanic_8c.html#adb9a182aa071791a306163d50d653deb">kpanic</a>(<span class="stringliteral">"tcpdump_init: fopen\n"</span>);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</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>  </div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="../../d4/d4d/tcpdump_8c.html#a41214d30ddd3c36e32b4ac0914218c19"> 57</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d4/d4d/tcpdump_8c.html#a41214d30ddd3c36e32b4ac0914218c19">tcpdump</a>(<span class="keyword">struct</span> <a class="code" href="../../d9/db8/structpbuf.html">pbuf</a> *p) {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> struct ip_hdr *iphdr;</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> struct tcp_hdr *tcphdr;</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> struct udp_hdr *udphdr;</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> char flags[5];</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> int i;</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> int len;</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> int offset;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d7/d3a/structfile.html">file</a> == <a class="code" href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> iphdr = p->payload;</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> switch(IPH_PROTO(iphdr)) {</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> case IP_PROTO_TCP: </span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> tcphdr = (struct tcp_hdr *)((char *)iphdr + IP_HLEN);</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> </span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> pbuf_header(p, -IP_HLEN);</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> if(inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> (struct ip_addr *)&(iphdr->dest),</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> IP_PROTO_TCP, p->tot_len) != 0) {</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> DEBUGF(TCPDUMP_DEBUG, ("tcpdump: IP checksum failed!\n"));</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> fprintf(file, "!chksum ");</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> </span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> i = 0;</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> if(TCPH_FLAGS(tcphdr) & TCP_SYN) {</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> flags[i++] = 'S';</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> if(TCPH_FLAGS(tcphdr) & TCP_PSH) {</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> flags[i++] = 'P';</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> if(TCPH_FLAGS(tcphdr) & TCP_FIN) {</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> flags[i++] = 'F';</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> if(TCPH_FLAGS(tcphdr) & TCP_RST) {</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> flags[i++] = 'R';</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> if(i == 0) {</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> flags[i++] = '.';</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> flags[i++] = 0; </span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"></span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> </span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> </span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> fprintf(file, "%d.%d.%d.%d.%u > %d.%d.%d.%d.%u: ",</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 24) & 0xff,</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 16) & 0xff,</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 8) & 0xff,</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 0) & 0xff,</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> ntohs(tcphdr->src),</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 24) & 0xff,</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 16) & 0xff,</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 8) & 0xff,</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 0) & 0xff,</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> ntohs(tcphdr->dest));</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> offset = TCPH_OFFSET(tcphdr) >> 4;</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> </span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> len = ntohs(IPH_LEN(iphdr)) - offset * 4 - IP_HLEN;</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> if(len != 0 || flags[0] != '.') {</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> fprintf(file, "%s %lu:%lu(%u) ",</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> flags,</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> ntohl(tcphdr->seqno),</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> ntohl(tcphdr->seqno) + len,</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> len);</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> if(TCPH_FLAGS(tcphdr) & TCP_ACK) {</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> fprintf(file, "ack %lu ",</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> ntohl(tcphdr->ackno));</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> fprintf(file, "wnd %u\n",</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> ntohs(tcphdr->wnd));</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> </span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> fflush(file);</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> </span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> pbuf_header(p, IP_HLEN);</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> break;</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> </span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> case IP_PROTO_UDP: </span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> udphdr = (struct udp_hdr *)((char *)iphdr + IP_HLEN);</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> </span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> pbuf_header(p, -IP_HLEN);</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> if(inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> (struct ip_addr *)&(iphdr->dest),</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"> IP_PROTO_UDP, p->tot_len) != 0) {</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> kprintf("tcpdump: IP checksum failed!\n");</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> fprintf(file, "!chksum ");</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> </span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> fprintf(file, "%d.%d.%d.%d.%u > %d.%d.%d.%d.%u: ",</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 24) & 0xff,</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 16) & 0xff,</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 8) & 0xff,</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> (int)(ntohl(iphdr->src.addr) >> 0) & 0xff,</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> ntohs(udphdr->src),</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 24) & 0xff,</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 16) & 0xff,</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 8) & 0xff,</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> (int)(ntohl(iphdr->dest.addr) >> 0) & 0xff,</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"> ntohs(udphdr->dest));</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="comment"> fprintf(file, "U ");</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"> len = ntohs(IPH_LEN(iphdr)) - sizeof(struct udp_hdr) - IP_HLEN;</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> fprintf(file, " %d\n", len);</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> </span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> fflush(file);</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> </span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> pbuf_header(p, IP_HLEN);</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> break;</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"></span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment">/***</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> END</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> ***/</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
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