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<div class="title">net.c</div> </div>
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<a href="net_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) 2002-2018 The UbixOS Project.</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"> * This was developed by Christopher W. Olsen for the UbixOS Project.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification, are permitted</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * provided that the following conditions are met:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 1) Redistributions of source code must retain the above copyright notice, this list of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * conditions, the following disclaimer and the list of authors.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * 2) Redistributions in binary form must reproduce the above copyright notice, this list of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * conditions, the following disclaimer and the list of authors in the documentation and/or</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * other materials provided with the distribution.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 3) Neither the name of the UbixOS Project nor the names of its contributors may be used to</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * endorse or promote products derived from this software without specific prior written</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * permission.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <<a class="code" href="include_2sys_2types_8h.html">sys/types.h</a>></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="inet_8h.html">net/inet.h</a>></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="sockets_8h.html">net/sockets.h</a>></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="kprintf_8h.html">lib/kprintf.h</a>"</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">#ifndef _IN_ADDR_T_DECLARED</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="net_8c.html#a8713edfd5a984843afe38b50d22c50a5"> 37</a></span> <span class="keyword">typedef</span> <a class="code" href="objgfx30_8h.html#ada085051a6d9a8e00a2cb256d1af14ba">uInt32</a> <a class="code" href="net_8c.html#a8713edfd5a984843afe38b50d22c50a5">in_addr_t</a>;</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="net_8c.html#aa80095a7cbb28b03d56d20117e7a0c05"> 38</a></span> <span class="preprocessor">#define _IN_ADDR_T_DECLARED</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> uInt32 htonl(uInt32 n) {</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> uInt32 retVal = 0x0;</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> retVal += ((n & 0xff) << 24);</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> retVal += ((n & 0xff00) << 8);</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> retVal += ((n & 0xff0000) >> 8);</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> retVal += ((n & 0xff000000) >> 24);</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> return(retVal);</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> uInt32 htons(uInt32 n) {</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> uInt32 retVal = 0x0;</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> retVal = (((n & 0xff) << 8) | ((n & 0xff00) >> 8));</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> return(retVal);</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> }</span></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>  </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">#ifdef _INET_ATON</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">int</span> inet_aton(cp, addr)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *cp;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">struct </span><a class="code" href="structin__addr.html">in_addr</a> *addr;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> {</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="objgfx30_8h.html#ada085051a6d9a8e00a2cb256d1af14ba">uInt32</a> parts[4];</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="inet_8h.html#ab4fa3cac7cd90edc5ceb4efca7ec0059">in_addr_t</a> val;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">char</span> *c;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">char</span> *endptr;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">int</span> gotend, n;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  c = (<span class="keywordtype">char</span> *)cp;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  n = 0;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * Run through the string, grabbing numbers until</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * the end of the string, or some error</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  gotend = 0;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">while</span> (!gotend) {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">//errno = 0;</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  val = <a class="code" href="strtol_8c.html#a23a80e470a9dae66d16e7d25fbba122a">strtol</a>(c, &endptr, 0);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="kprintf_8h.html#a20b56810edb62a6fe59917015c30848f">kprintf</a>(<span class="stringliteral">"VAL: [%x]"</span>,val);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">//if (errno == ERANGE) /* Fail completely if it overflowed. */</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// return (0);</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> * If the whole string is invalid, endptr will equal</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * c.. this way we can make sure someone hasn't</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * gone '.12' or something which would get past</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * the next check.</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (endptr == c)</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">return</span> (0);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  parts[n] = val;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  c = endptr;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">/* Check the next character past the previous number's end */</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">switch</span> (*c) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">case</span> <span class="charliteral">'.'</span> :</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">/* Make sure we only do 3 dots .. */</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (n == 3) <span class="comment">/* Whoops. Quit. */</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> (0);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  n++;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  c++;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  </div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">case</span> <span class="charliteral">'\0'</span>:</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  gotend = 1;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> if (isspace((unsigned char)*c)) {</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> gotend = 1;</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> break;</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> } else</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span> (0); <span class="comment">/* Invalid character, so fail */</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>  </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>  </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * Concoct the address according to</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * the number of parts specified.</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">switch</span> (n) {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">case</span> 0: <span class="comment">/* a -- 32 bits */</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">/*</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * Nothing is necessary here. Overflow checking was</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * already done in strtoul().</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="keywordflow">break</span>;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">case</span> 1: <span class="comment">/* a.b -- 8.24 bits */</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (val > 0xffffff || parts[0] > 0xff)</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> (0);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  val |= parts[0] << 24;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">case</span> 2: <span class="comment">/* a.b.c -- 8.8.16 bits */</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">if</span> (val > 0xffff || parts[0] > 0xff || parts[1] > 0xff)</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">return</span> (0);</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  val |= (parts[0] << 24) | (parts[1] << 16);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">break</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="keywordflow">case</span> 3: <span class="comment">/* a.b.c.d -- 8.8.8.8 bits */</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">if</span> (val > 0xff || parts[0] > 0xff || parts[1] > 0xff ||</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  parts[2] > 0xff)</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> (0);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (addr != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  addr-><a class="code" href="structin__addr.html#a3b6ef12385f913cc23a199205d9bf858">s_addr</a> = <a class="code" href="def_8h.html#ae4027a6ad07f13aa12eab285a1b46019">htonl</a>(val);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span> (1);</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> }</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor">#endif</span></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> <span class="comment">/***</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> END</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> ***/</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
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